WO2020135362A1 - Bending part of endoscope, and endoscope - Google Patents

Bending part of endoscope, and endoscope Download PDF

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Publication number
WO2020135362A1
WO2020135362A1 PCT/CN2019/127629 CN2019127629W WO2020135362A1 WO 2020135362 A1 WO2020135362 A1 WO 2020135362A1 CN 2019127629 W CN2019127629 W CN 2019127629W WO 2020135362 A1 WO2020135362 A1 WO 2020135362A1
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WO
WIPO (PCT)
Prior art keywords
groove
bending
protrusion
endoscope
endoscope according
Prior art date
Application number
PCT/CN2019/127629
Other languages
French (fr)
Chinese (zh)
Inventor
李奕
刘红宇
杨俊风
Original Assignee
深圳市先赞科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201811594822.1A external-priority patent/CN109497915B/en
Priority claimed from CN201811594844.8A external-priority patent/CN109512369B/en
Application filed by 深圳市先赞科技有限公司 filed Critical 深圳市先赞科技有限公司
Publication of WO2020135362A1 publication Critical patent/WO2020135362A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005—Flexible endoscopes

Definitions

  • the invention relates to an endoscope component, in particular to a curved part of an endoscope and an endoscope.
  • Endoscope is a very widely used medical and industrial detection instrument.
  • the bending part is achieved by bending multiple snake bone joints connected to each other by a steel wire rope. Adjacent snake bone joints are connected by rivets to form hinges, thereby achieving relative rotation.
  • a snake bone joint without rivets is developed and produced, and two adjacent snake bone joints are not riveted by rivets.
  • the connection strength between two adjacent snake bone joints is weak.
  • the joint between two adjacent snake bone joints is easily deformed or displaced, resulting in the relative rotation between the two adjacent snake bone joints, which affects the normal use of the endoscope.
  • An object of the present invention is to provide a bending portion and an endoscope of an endoscope capable of maintaining stable connection between two bending blocks.
  • a bending part of an endoscope includes a plurality of bending blocks connected end to end, adjacent two bending blocks are rotatably connected by a connecting part, and the bending block is provided with a cutting line near an end face at one end, and the bending block Between the end surface of the cutting line and the cutting line is a punching portion, the punching portion is recessed toward the inner side of the bending block to form a guide portion for threading the pulling line, the cutting line and the other end surface of the bending block A buffer groove is provided between the buffer grooves, which is used to buffer the stamping pressure.
  • the length of the buffer groove is greater than the length of the cutting line.
  • the cutting line and the buffer groove are symmetrically distributed about the same axis.
  • the length of the cutting line is at least 1/2 of the length of the buffer groove.
  • two connecting portions are provided between two adjacent bending blocks, and the two connecting portions are oppositely arranged along the radial direction of the bending block.
  • the connecting portions of the plurality of bending blocks are located on two parallel lines.
  • the connecting portions of the plurality of bending blocks are located on four parallel lines.
  • the connecting portion includes a groove and a protrusion
  • the protrusion is rotatably received in the groove
  • end surfaces of the bending block are provided on both sides of the connecting portion The contact surface, the protrusion rotates relatively to the maximum angle in the groove, and the contact surfaces of the two adjacent bending blocks abut, so that the two bending blocks are at the maximum bending angle and enter the locked state .
  • the abutment surfaces of two adjacent bending blocks abut, and the connecting portion is provided with a limiting structure, and the limiting structure enables the protrusion to be stably received in the groove.
  • the limiting structure includes locking parts provided on both sides of the groove, and slide grooves that cooperate with the locking parts are provided on both sides of the protrusion, and the groove Locking portions are provided on both sides of the door, the locking portion is slidable along the chute, and an opening end of the chute is provided with a limiting portion, and the locking portion can be locked with the limiting portion, In order to limit the locking part to the chute.
  • the locking portion includes a first locking portion and a second locking portion, the first locking portion and the second locking portion slide along the sliding groove, the first When one side of a locking portion is against the protrusion, the second locking portion is clamped to the limiting portion.
  • the angle corresponding to the arc-shaped sliding trajectory of the locking portion is equal to 13 degrees, and the arc corresponding to each chute is greater than 13 degrees.
  • the locking portion is a fin, and the fin is fan-shaped.
  • the limiting structure includes ring arms provided on both sides of the protrusion and ring grooves provided on both sides of the groove, and the ring arms are correspondingly received in the ring groove Inside, the ring arm is rotatably received in the ring groove, and the angle corresponding to the arc sliding path of the ring arm along the ring groove is greater than or equal to the maximum angle of relative rotation of the protrusion and the groove.
  • the plurality of ring arms and the plurality of ring grooves have the same center angle.
  • the annular groove is symmetrically arranged on both sides of the groove, and the annular arm is symmetrically arranged on both sides of the protrusion.
  • the annular grooves on both sides of the groove are provided asymmetrically on both sides of the groove, and the annular arms on both sides of the protrusion are provided asymmetrically on both sides of the protrusion .
  • the contact surface between the protrusion and the groove is a smooth surface
  • the contact surface between the locking portion and the slide groove is a smooth transition surface
  • the curved portion of the endoscope is made by laser cutting technology.
  • An endoscope includes a bending portion and a pulling wire provided in the bending portion, and the pulling wire is connected in series with a plurality of the bending blocks.
  • the endoscope includes a rubber tube, and the rubber tube is directly sleeved on the outer side of the bending part, the bending part includes a plurality of bending blocks connected end to end, and the bending part supports the rubber tube The outer sidewalls at both ends of the bent portion are directly and sealingly connected to the outer sidewalls at both ends of the hose, respectively.
  • the bending part of the endoscope is not provided with rivets, and the adjacent two bending blocks are connected by a connecting part, the manufacturing process is simple and easy to realize.
  • punching the punching part due to the existence of the cutting line, it is convenient to form the guide part.
  • the punching pressure is transmitted to the cutting line, blocking the pressure transmission, and avoiding the impact of the punching pressure on the parts other than the punching part, resulting in deformation of the force.
  • the buffer groove can effectively disperse the punching stress on the bending block uniformly, and isolate the punching action, so as to reduce the deformation of the bending block caused by the stamping process, prevent the connection part from tripping, and maintain the gap between the two bending blocks Stable connection.
  • FIG. 1 is a schematic diagram of a stereoscopic structure of an endoscope according to this embodiment
  • FIG. 2 is a perspective view of a partial structure of a connecting portion of the endoscope shown in FIG. 1;
  • FIG. 3 is a perspective view of a connecting block of a connecting portion of the endoscope shown in FIG. 1;
  • connection block 4 is a schematic structural view of the connection block shown in FIG. 3 from another angle;
  • FIG. 5 is a schematic structural view of another embodiment of the connecting portion of the endoscope shown in FIG. 2;
  • FIG. 6 is a schematic structural view of another embodiment of the connecting portion of the endoscope shown in FIG. 2;
  • FIG. 7 is a schematic structural view of a connecting block of the connecting portion shown in FIG. 6;
  • connection block 8 is a schematic structural view of the connection block shown in FIG. 7 from another angle;
  • connection block 9 is a schematic structural view of the connection block shown in FIG. 7 from another angle;
  • FIG. 10 is a schematic structural view of another state of the connecting portion shown in FIG. 6;
  • FIG. 11 is a schematic structural view of another embodiment of the connecting portion of the endoscope shown in FIG. 2;
  • Fig. 12 is a cross-sectional view of the connecting portion shown in Fig. 1.
  • indications of directions are used to explain that the structures and movements of various elements of the present invention are not absolute but relative. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the description of the position of these elements changes, the indications of these directions also change accordingly.
  • the present invention provides an endoscope 20 and an endoscope bending portion 21.
  • An endoscope 20 includes a curved portion 21 and a pulling wire 22 provided in the curved portion 21.
  • the pulling wire 22 pulls the bent portion 21 and bends the bent portion 21 to serve the purpose of pulling the bent portion 21 to bend.
  • the plurality of bending pieces 10 are connected in series by the pull wire 22 in sequence.
  • the bending portion 21 includes a plurality of bending pieces 10 connected in sequence.
  • the bending block 10 includes a head bending block near the front end 201 of the endoscope, a tail bending block close to the rear end 202 of the endoscope, and a middle bending block between the head bending block and the tail bending block.
  • the structure of the first bending piece and the tail bending piece is similar to the structure of the middle bending piece, the difference is mainly that the front end of the first bending piece and the rear end of the tail bending piece are not provided with a connecting portion for connecting the bending piece, so that the head
  • the bending block is the bending block at the forefront, and the bending block at the tail is the bending block at the rearmost end.
  • the middle bending block is taken as an example for description below: two adjacent bending blocks 10 are rotatably connected.
  • the two ends of the bending block 10 are a first end 10a and a second end 10b, respectively.
  • one bending block is the first bending block 101 and the other bending block is the second bending block 102.
  • the bending block 10 is provided with a cutting line 19 near the end surface. Between the end surface of the first end 10a of the bending block 10 and the cutting line 19 is a punching portion 191. The punched portion 191 is recessed toward the inner side of the bending block 10 to form a guide portion 192 for passing the pulling wire 22. Then, the pulling wire 22 can pass through the guide portion 192, so that the pulling wire 22 is connected to the bending portion 21, and the function of guiding the bending of the bending portion 21 is achieved.
  • a buffer groove 193 is provided between the cutting line 19 and the second end 10b of the bending block 10.
  • the length of the buffer groove 193 is greater than the length of the cutting line 19.
  • the buffer groove 193 is used to further buffer the punching pressure.
  • the buffer groove 191 can effectively disperse the punching stress on the bending block 10 and isolate the punching action, so as to reduce the deformation of the bending block 10 caused by the punching process, and prevent the protrusion 13 and the groove 12 of the connecting portion 11 A trip occurred.
  • the cutting lines 19 and the buffer grooves 193 are arranged so that the cutting lines 19 and the buffer grooves 193 are symmetrically distributed about the same axis.
  • the two ends of the cutting line 19 and the two ends of the buffer groove 193 are arranged symmetrically with each other.
  • the punching portion 191 punches, the pressure is transmitted to the cutting line 19.
  • the cutting line 19 is transmitted to the punching pressure, and is transferred to the buffer groove 193 again.
  • the buffer groove 193 is directly opposite to the cutting line 19, so that the pressure is evenly distributed to the buffer groove 193.
  • the length of the cutting line 19 is at least 1/2 of the length of the buffer groove 193, when the length of the buffer groove 193 is dispersed as much as possible, the impact of the buffer groove 193 on the overall strength of the bending block 10 is avoided. . Specifically, the length of the cutting line 19 is 5/7 of the length of the buffer groove 193. Then, the buffer groove 193 can better disperse the punching pressure and ensure the overall strength of the bending block 10.
  • the lengths of the multiple buffer grooves 193 may be different, and they are arranged side by side.
  • the two adjacent bending pieces 10 are rotatably connected by a connecting portion 11.
  • the first end 10 a of the first bending block 101 and the second end 10 b of the second bending block 102 are rotatably connected through the connecting portion 11.
  • two connecting portions 11 are provided between two adjacent bending pieces 10. That is, the first bending block 101 and the second bending block 102 are rotatably connected through the two connecting portions 10.
  • the two connecting portions 11 are opposite to each other along the radial direction of the bending block 10. That is, two adjacent connecting pieces 10 are rotatably connected by two connecting portions 11, and the two connecting portions 11 are located on the same straight line.
  • the connecting portion 11 includes a groove 12 and a protrusion 13.
  • the protrusion 13 is rotatably received in the groove 12.
  • the connecting portion 11 of one bending block 10 may be a groove 12 or a protrusion 13, as long as the connecting portion 11 of the other bending block 10 connected thereto can be mated with it.
  • the connecting portions 11 are provided on both sides of the bending block 10, and the first end 10a and the second end 10b of one of the bending blocks 10 are provided.
  • the cutting line 19 is located between the two connecting portions 11. Specifically, the protrusion 13 is provided at one end of the bending block 10, and the cutting line 19 is provided at the other end of the bending block 10 relative to the protrusion 13. The minimum reduction of the opening position of the cutting line 19 has an impact on the strength of the bending block 10 to ensure the strength of the bending block 10 itself.
  • the groove 12 may be provided at the second end 10b of the first bending block 101, and the second end 10b of the second bending block 102 is correspondingly provided with a protrusion 13. Then, the first end 10a of the first bending block 101 is provided with a protrusion 13, and the first end 10a of the second bending block 102 is provided with a groove 12 to satisfy the first bending block 101, the second bending block 102 and other bending The blocks are rotatably connected.
  • first end 10 a of the first bending block 101 may also be provided with a protrusion 13, and the second end 10 b of the second bending block 102 is correspondingly provided with a groove 12.
  • second end 10a of the first bending block 101 is provided with a groove 12
  • the first end 10a of the second bending block 102 is provided with a protrusion 13 to satisfy the first bending block 101 and the second bending block 102 is rotatably connected with other bending blocks.
  • the first end 10 a of the first bending block 101 may also be provided with a protrusion 13, and the second end 10 b of the second bending block 102 is correspondingly provided with a groove 12. Then, the second end 10a of the first bending block 101 may also be provided with a protrusion 13, and the first end 10a of the second bending block 102 is provided with a groove 12 to satisfy the first bending block 101 and the second bending block 102 is rotatably connected with other bending blocks. It suffices that the two adjacent bending blocks 10 can be cooperatively connected.
  • the number of connecting portions 11 between the two bending pieces 10 may be one or more.
  • the first end 10 a of the bending block 10 is provided with two protrusions 13, and the second end 10 b is provided with two grooves 12. Therefore, the shape of each bending piece 10 is a uniform shape.
  • the multiple bending blocks 10 can be arranged and manufactured in a uniform manner, which is convenient for the realization of the manufacturing process.
  • the two grooves 12 are located on the same straight line, and the two protrusions 13 are located on the same straight line.
  • the straight line where the two grooves 12 are located and the straight line where the two protrusions 13 are located are perpendicular to each other.
  • the number of the connecting portions 11 between the two bending blocks 10 may also be one. That is, the connecting portion 11 where the adjacent three bending pieces 10 are connected to each other is located on two parallel lines. Then, the bending portion can be rotated in two directions, and the rotation angle of the bending portion can be controlled more conveniently.
  • the curved portion with two rotation directions is suitable for a cavity with a small inner diameter, such as a lung cavity.
  • the curved portion of the endoscope is made by laser cutting technology. Therefore, in order to ensure the smoothness of the rotation between the connecting portions 11 of the bending pieces 10 and the smoothness between the contact parts, the welding slag (melting slag) is removed by polishing after laser cutting to ensure two bending pieces There is no hindrance when moving between 10.
  • the contact surface between the protrusion 13 and the groove 12 is a smooth surface, which can ensure that the protrusion 13 slides smoothly in the groove 12 and the ring arm 15 slides smoothly in the ring groove 16 and the ring arm 15 contacts the ring groove 16
  • the surface is a smooth transition surface, so that the two contact surfaces rotate relatively smoothly.
  • the protrusion 13 includes a head end 13a and a support portion 13b.
  • the head end 13a is rotatably received in the groove 12.
  • the support portion 13b is used to connect with the bending block 10.
  • the groove 12 is adapted to the shape of the head end 13 a of the protrusion 13, so that the protrusion 13 can be limitedly received in the groove 12.
  • the open end 120 of the groove 12 is contracted to prevent the protrusion 13 from escaping from the groove 12.
  • the groove 12 is a circular groove.
  • the head end 13a is also circular.
  • the width of the end of the support portion 13b connected to the bending block 10 is greater than the width of the end of the support portion 13b connected to the head end 13a. Then, the area where the support portion 13b is connected to the bending block 10 is large, and the connection strength between the protrusion 13 and the bending block 10 can be increased to ensure the connection strength between the connection portion 11 and the connection portion 11.
  • both the protrusion 13 and the groove 12 have an arc. If the inner diameters of two adjacent bending blocks 10 are the same, the bending arcs of the protrusion 13 and the groove 12 are the same.
  • the end surfaces of the bending block 10 are provided with abutting surfaces 14 on both sides of the connecting portion 11, when the two abutting surfaces 14 of two adjacent bending blocks 10 abut against each other, the two bending blocks 10 stop rotating, Then the maximum angle between the two bending blocks 10 is reached.
  • the protrusion 13 rotates in the groove 12. When the abutting surfaces 14 of the two adjacent bending pieces 10 abut, the protrusion 13 stops rotating, reaching the maximum angle of relative rotation between the protrusion 13 and the groove 12.
  • the abutment surface 14 is an arc-shaped concave surface.
  • the arc-shaped concave surface can enable the two abutting surfaces 14 to maintain a larger area of contact, so that the two bending blocks 10 can maintain a stable position.
  • the lowest point of the arc-shaped concave surface is opposed to the connecting portion 11.
  • the maximum angle between the central axes of the two bending blocks 10 is formed.
  • the angle of the maximum included angle is designed according to the use requirements of the endoscope. For different types of endoscopes and different use requirements, the maximum included angle between the central axes of two adjacent bending blocks 10 is also Can be different.
  • the contact surface 14 is rounded.
  • the abutment surface 14 after rounding can improve the surface smoothness of the curved portion, and avoid the sharp side edges of the abutment surface 14 from affecting the movement of the endoscope.
  • the interference between the abutting surfaces 14 after the rounding can avoid interference between the two abutting surfaces 14 and ensure the formation between the two bending blocks 10
  • the included angle is the same size, which improves the bending accuracy of the endoscope.
  • the connecting portion 11 is provided with a limiting structure 110.
  • the limiting structure 110 enables the protrusion 13 to be stably received in the groove 12.
  • the limiting structure 110 includes annular arms 15 provided on both sides of the protrusion and annular grooves 16 provided on both sides of the groove.
  • the annular arm 15 is correspondingly received in the annular groove 16 and the annular arm 15 It is rotatably accommodated in the annular groove 16, and the angle corresponding to the circular sliding path of the annular arm 15 along the circular groove 16 is greater than or equal to the maximum angle of relative rotation between the protrusion and the groove.
  • Ring arms 15 are respectively provided on both sides of the protrusion 13, and ring grooves 16 are respectively provided on both sides of the groove 12.
  • the ring arm 15 is correspondingly received in the ring groove 16.
  • the ring arm 15 is rotatably received in the ring groove 16.
  • the bending pieces 10 of the bending portion of this embodiment are connected by a connecting portion 11, and the two connecting portions 11 are rotatably connected by a protrusion 13 and a groove 12, and are also rotatable by a ring arm 15 and a ring groove 16
  • the connection makes it possible to enhance the connection strength of the connection portion 11.
  • the force between the two bending pieces 10 can be dispersed between the protrusion 13 and the groove 12 and between the ring arm 15 and the ring groove 16 to avoid the concentration of the force and make the two
  • the connecting portion 11 between the bending pieces 10 is deformed by force, which affects the normal use of the bending portion.
  • annular arms 15 and annular grooves 16 There may be one or more annular arms 15 and annular grooves 16.
  • the annular groove 16 is symmetrically provided on both sides of the groove 12.
  • the ring arms 15 are symmetrically arranged on both sides of the protrusion 13. Therefore, the arc lengths of the annular grooves 16 on the left and right sides and their corresponding center angles are equal, and the arc lengths of the ring arms 15 on the left and right sides and their corresponding center angles are equal.
  • the axis of symmetry of the ring groove 16 is parallel to the axis of symmetry of the plurality of ring arms 15 so that the ring groove 16 and the ring arm 15 are orthogonally connected. Therefore, the angle between the two axes of symmetry is the angle of relative rotation between the two bending blocks 10.
  • the axis of symmetry of the ring groove 16 and the axis of symmetry of the plurality of ring arms 15 may also intersect. Then, the annular groove 16 and the annular arm 15 are not orthogonal. Similarly, when the two bending pieces 10 rotate relatively, the ring arm 15 can also rotate relatively in the ring groove 16.
  • both the ring arm 15 and the ring groove 16 are one.
  • the annular grooves 16 on both sides of the groove 12 may be asymmetrically provided on both sides of the groove, and the annular arms 15 on both sides of the protrusion 13 may also be provided asymmetrically on both sides of the protrusion 13.
  • the arc lengths of the annular grooves 16 on the left and right sides and their corresponding center angles may also be unequal.
  • the arc lengths of the ring arms 15 on the left and right sides and the corresponding center angles may also be unequal.
  • the arc length of the first annular groove 161 on one side is small, and the arc length of the second annular groove 162 on the other side is large.
  • the arc length of the first ring arm 151 on one side is also small, and the arc length of the second ring arm 152 on the other side is also large.
  • the first ring arm 151 rotates along the first ring groove 161
  • the second ring arm 152 rotates along the second ring groove 162.
  • the ring arms 25 on the left and right sides rotate smoothly in the ring groove 16 and the relative rotation of the ring arms 15 on both sides does not interfere with each other.
  • FIG. 6, FIG. 7, FIG. 8 and FIG. 9. there are multiple annular arms 15 and multiple annular grooves 16.
  • the central angles corresponding to the plurality of annular arms 15 and the plurality of annular grooves 16 are the same.
  • the plurality of ring arms 15 cooperate with the plurality of ring grooves 16 respectively to increase the contact area between the two bending blocks 10, which can better distribute the force between the two bending blocks 10 and ensure the two bending blocks 10 Stable connection between.
  • An auxiliary arm 17 is formed between two adjacent annular grooves 16 and an auxiliary groove 18 is formed between two adjacent annular arms 15.
  • the auxiliary arm 17 is rotatably received in the auxiliary groove 18.
  • Auxiliary grooves 18 are formed between the plurality of annular arms 15, and an auxiliary arm 17 is formed between the plurality of annular grooves 16. Therefore, through the interaction between the auxiliary arm 17 and the auxiliary groove 18, one of the two bending blocks 10 The connection between them further increases the limited relationship.
  • the width of the auxiliary arm 17 is equal to the width of the ring arm 15, and the width of the auxiliary groove 18 is equal to the width of the ring groove 16. Therefore, while the two bending blocks 10 rotate relatively, the outer side wall of the auxiliary arm 17 and the inner side wall of the auxiliary groove 18 also contact each other, which further increases the contact area between the two bending blocks 10 and effectively disperses the deformation stress.
  • annular arms 15 there are an even number of annular arms 15 on one side of the protrusion 13, and an even number of annular grooves 16 on the side of the groove 12.
  • two annular arms 15 are respectively provided on both sides of the protrusion 13, and two annular grooves 16 are respectively provided on both sides of the groove 12.
  • one of the bending blocks 10 is provided with two annular grooves 16, and the other bending block 10 is correspondingly provided with two auxiliary grooves 18. Therefore, the strength of the two bending blocks 10 themselves Similar, there will be no big difference, so as to ensure uniform strength of the whole bending part, and ensure uniform stress.
  • the angle corresponding to the circular sliding path of the circular arm 15 along the circular groove 16 is greater than or equal to the maximum angle of relative rotation of the protrusion 13 and the groove 12.
  • the ring arm 15 slides in the ring groove 16 and also rotates to the maximum angle. Therefore, the maximum angle formed between the central axes of the two bending blocks 10 and the matching relationship between the annular groove 16 and the ring arm 15 will not affect the maximum angle between the two bending blocks 10, ensuring that the bending portion can be smoothly reached Bending angle requirements, normal use.
  • the angle corresponding to the circular sliding path of the circular arm 15 along the circular groove 16 is equal to the maximum angle of relative rotation of the protrusion 13 and the groove 12. Then, when the two abutting surfaces 14 on one side of the two bending blocks 10 abut against each other, the ring arm 15 slides in the ring groove 16 and the free end of the ring arm 15 also opposes one end of the ring groove 16 Hold, the ring arm 15 also rotates to the very end of the arc-shaped sliding track in the ring groove 16. Then, the rotation position between the two bending pieces 10 at the maximum angle is limited, that is, the two abutment surfaces 14 abut against each other to limit the position, and also the ring arm 15 and the ring groove 16 mutually limit to limit the position.
  • the angle corresponding to the circular sliding path of the circular arm 15 along the circular groove 16 is equal to 13 degrees.
  • the arc corresponding to each annular groove 16 is at least greater than 13 degrees.
  • the maximum angle of relative rotation between the protrusion 13 and the groove 12 is 13 degrees.
  • the limiting structure 110 may further include locking portions 122 provided on both sides of the groove 12.
  • the two sides of the protrusion 13 are provided with sliding grooves 131 that cooperate with the locking portion 122.
  • Locking portions 122 are provided on both sides of the groove 12.
  • the locking portion 122 is slidable along the sliding groove 131.
  • the opening end of the sliding groove 131 is provided with a limiting portion 132.
  • the locking portion 122 can be locked with the limiting portion 132 so that the locking portion 122 is limited to the sliding groove 131.
  • locking portions 122 are provided on both sides of the groove 12.
  • Two annular arms 121 are provided on the outside of the groove 12, and the two annular arms 121 enclose the groove 12.
  • a circular groove 12 is formed between the two ring arms 121.
  • the two annular arms 121 extend outward from the end surface of the bending block 10 to the opening of the groove 12.
  • the end of the ring arm 121 near the opening is the free end of the ring arm 121.
  • the locking portion 122 is provided at the free end of the ring arm 121.
  • the two ring arms 121 are symmetrically distributed.
  • the locking portion 122 includes a first locking portion 1221 and a second locking portion 1222.
  • the first locking portion 1221 and the second locking portion 1222 slide along the sliding groove 131.
  • the second locking portion 1222 is engaged with the limiting portion 132.
  • the two sides of the protrusion 13 are provided with sliding grooves 131 that cooperate with the two locking portions 122.
  • the slide grooves 131 are symmetrically distributed on both sides of the protrusion 13. Therefore, both the ring arm 121 and the locking portion 122 are accommodated in the sliding groove 131.
  • the sliding groove 131 corresponds to the shape of the ring arm 121 and is also circular arc-shaped.
  • the locking portion 122 is slidable along the sliding groove 131, and a limiting portion 132 is provided at the open end of the sliding groove 131.
  • the locking portion 122 can be locked with the limiting portion 132 so that the locking portion 122 is limited within the sliding groove 131.
  • the locking portion 122 is a fin 125.
  • the position-limiting portion 132 is also a locking fin protruding from the sliding groove 131.
  • the end surface 133 of the limiting portion 132 is a concave surface.
  • the concave surface cooperates with the ring arm 121 to smoothly slide in the sliding groove 131 to keep the end surface 133 of the limiting portion 132 in smooth contact with the outer surface of the ring arm 121 to maintain Turns smoothly.
  • the locking portion 122 of the ring arm 121 and the limiting portion 132 of the sliding groove 131 are engaged with each other to lock the relative rotation position of the limiting protrusion 13 and the groove 12.
  • the lock The stop portion 122 and the limit portion 132 are locked to limit the position, so as to avoid the problem of the protrusion 13 falling out of the groove 12.
  • the locking portion 122 is a fin 125.
  • the position-limiting portion 132 is also a locking fin protruding from the sliding groove 131.
  • the ring arm 121 also slides in the sliding groove 131.
  • the locking portion 122 and the limiting portion 132 on one side abut against each other, the ring arm 121 stops rotating in the sliding groove 131.
  • the fin 125 is fan-shaped.
  • the fan-shaped protruding fins 125 can increase the contact area between the locking portion 122 and the inner side wall of the sliding groove 131.
  • the contact between the protruding fins 125 and the sliding groove 131 is approximately smooth to ensure that the protruding fins 125 can be in the sliding groove 131 Stable sliding inside. and.
  • the fan-shaped protruding fin 125 can increase the length of the outer arc surface of the protruding fin 125 to avoid tip collision between the protruding fin 125 and the sliding groove 131, and ensure that the protruding fin 125 can smoothly slide along the sliding groove 131.
  • the locking portion 122 is not limited to the shape of the fin 125, and the fin 125 is not limited to the shape of a fan.
  • the locking portion 122 may also be other deformed structures, for example, the locking portion 122 is bent back.
  • the protruding fin 125 may also be a rectangular strip or the like.
  • the protrusion 13 relatively rotates to the maximum angle in the groove 12, and the abutment surfaces 14 of the two adjacent bending blocks 10 abut, so that the two bending blocks 10 are at the maximum bending angle and enter the locked state.
  • the working state of the two adjacent bending blocks 10 is the locked state, and the two bending blocks in the locked state 10 No relative rotation can occur.
  • the locking portion 122 and the sliding groove 131 can no longer rotate relatively.
  • the angle corresponding to the arc sliding track of the locking portion 122 along the sliding groove 131 is greater than or equal to the maximum angle at which the protrusion 13 and the groove 12 rotate relative to each other.
  • the locking portion 122 slides along the sliding groove 131, and the sliding groove 131 is arc-shaped, then the movement trajectory of the locking portion 122 in the sliding groove 131 is arc-shaped.
  • the angle corresponding to the arc-shaped sliding locus of the locking portion 122 along the sliding groove 131 is smaller than the angle corresponding to the arc of the sliding groove 131.
  • the angle of the locking portion 122 along the arc-shaped sliding trajectory of the sliding groove 131 is greater than or equal to the maximum angle at which the protrusion 13 and the groove 12 rotate relative to each other.
  • the arc size of the sliding groove 131 directly determines the angle size corresponding to the arc-shaped sliding track of the locking portion 122 in the sliding groove 131.
  • the angle corresponding to the arc of the sliding groove 131 is greater than the maximum angle at which the protrusion 13 and the groove 12 rotate relative to each other. Since the locking portion 122 is a fin 125 and the fin 125 is fan-shaped, the fin 125 occupies a certain distance of the sliding groove 131. Therefore, the angle corresponding to the arc-shaped sliding trajectory of the locking portion 122 in the sliding groove 131 is smaller than the overall arc size of the sliding groove 131. Therefore, by increasing the length of the sliding groove 131 by design, the angle corresponding to the arc of the locking portion 122 rotating in the sliding groove 131 can be greater than or equal to the maximum bending angle between the two bending blocks 10.
  • the locking limit of the locking portion 122 and the limiting portion 132 can be avoided, and the design requirement of the maximum angle between the central axes of the two bending blocks 10 will not be affected, and the maximum bending angle of the bending block 10 can be satisfied Need for use of endoscopes.
  • the abutment surface 14 serves as a safety protection to prevent deformation between the locking portion 122 and the limiting portion 132 due to excessive torsion.
  • the shape of the locking portion 122 may also be an elongated bar shape, so the distance of the sliding groove 131 occupied by the locking portion 122 is small.
  • the angular size of the locking portion 122 along the arc-shaped sliding trajectory of the sliding groove 131 is approximately equal to the angular size of the arc of the sliding groove 131.
  • the angle of the locking portion 122 along the arc-shaped sliding trajectory of the sliding groove 131 is equal to the maximum angle of relative rotation of the protrusion 13 and the groove 12.
  • the locking portion 122 also resists the limiting portion 132 of the sliding groove. Therefore, the rotation positions of the two bending pieces 10 can be limited by the two abutting surfaces 14 against each other, or can be limited by the two locking portions 122 and the limiting portion 132 cooperating with each other.
  • the angle corresponding to the arc-shaped sliding trajectory of the locking portion 122 along the sliding groove 131 is equal to 13 degrees.
  • the arc corresponding to each chute 131 is greater than 13 degrees.
  • the maximum angle of relative rotation between the protrusion 13 and the groove 12 is 13 degrees.
  • the curved portion of the endoscope is made by laser cutting technology. Therefore, in order to ensure the smoothness of the rotation between the bending pieces and the smoothness between the contact parts, the welding slag (slag) is removed by polishing after laser cutting to ensure that there is no movement between the two bending pieces Hinder.
  • the contact surface between the protrusion 13 and the groove 12 is a smooth surface, and the locking portion 122 and the sliding surface
  • the contact surface of the groove 131 is a smooth transition surface, so that the two contact surfaces rotate relatively smoothly.
  • the endoscope further includes a hose 23.
  • the rubber tube 23 is directly sleeved on the outer side of the bent portion 21.
  • the endoscope 20 does not require a steel mesh.
  • the bent portion 21 supports the hose 23.
  • the hose 23 has a certain flexibility, and the hose 23 can be bent with the bending portion 21.
  • the bending portion 21 includes a plurality of bending pieces 10 connected end to end.
  • the outer side walls at both ends of the bent portion 21 are directly and sealingly connected to the outer side walls at both ends of the hose 23, respectively.
  • the rubber tube 23 is bonded to both ends of the bent portion 21 through a sealant layer (not shown).
  • the sealant layer is directly disposed between the inner wall of the rubber tube 23 and the outer wall of the bent portion 21. The sealant layer can ensure the tightness between the rubber tube 23 and the bent portion 21.
  • the rubber tube 23 may be a fluoroelastomer tube.
  • the strength and flexibility of the fluoroelastomer tube can meet the requirements of use.
  • the rubber tube 23 is directly sleeved on the outer side of the bending portion 21, and the fluoroelastomer tube can withstand 150 bendings without breaking under the condition of full load and 180-degree bending at full angle.
  • it is generally 30 minutes, including the entire time the patient enters the examination room and comes out.
  • this speed is already a relatively fast frequency in the operation of the doctor .
  • the inner diameter of the hose 23 is larger than the outer diameter of the bent portion 21, and there is a gap between the hose 23 and the bent portion 21.
  • the gap enables the bending portion 21 to bend freely, and prevents the hose 23 from generating a binding force on the bending portion 21.
  • the inner wall of the hose 23 is provided with a wear-resistant layer (not shown).
  • the wear-resistant layer can avoid multiple friction between the bending portion 21 and the inner side wall of the hose 23 when the hose 23 is bent inside, which causes the hose 23 to wear and affect the service life of the hose 23.
  • the wear layer can be a coating.
  • the coating can avoid affecting the flexibility and toughness of the hose 23, ensure that the hose 23 can bend freely with the bending portion 21, and meet the normal use requirements of the endoscope.
  • the endoscope of this embodiment does not have a steel mesh, and can also meet the use requirements of the endoscope.
  • the endoscope of the present embodiment can fundamentally solve the problem of puncturing the rubber tube 23 with a broken head of the steel mesh, ensuring that the endoscope can be safely used.
  • the absence of a steel mesh not only simplifies the structure of the endoscope, but also saves the operation procedure of installing and setting the steel mesh and saves costs.
  • the bending portion 211 of the endoscope is not provided with rivets, and the two adjacent bending blocks 10 are connected by the connecting portion 11.
  • the manufacturing process is simple and easy to implement.
  • connection portion 11 is provided with a limiting structure so that the protrusion 13 is stably accommodated in the groove 12.
  • the connecting portion is locked with each other by the locking portion 122 and the limiting portion 132, so that the locking portion 122 is limited to the sliding groove 132 to prevent the protrusion 13 from escaping from the groove 12. Therefore, even if rivets are not used in the bending portion of the endoscope, the connection strength between the two bending blocks 10 remains strong, and does not affect the normal use of the endoscope.
  • the ring arm 15 and the ring groove 16 are in contact with each other to disperse the force between the two bending pieces 10 and prevent the protrusion 13 from falling out of the groove 12.
  • the angle corresponding to the circular sliding path of the circular arm 15 along the circular groove 16 is greater than or equal to the maximum angle of relative rotation of the protrusion 13 and the groove 12 to ensure that the two bending blocks 10 can rotate according to design requirements.
  • the annular groove 16 is distributed symmetrically about the center of the groove 12, and the multi-stage annular arm 15 is distributed symmetrically about the center of the protrusion 13. Then, the force between the protrusion 13 and the groove 12 can be distributed on the ring arm 15 symmetrically in the center, then the component force received by each ring arm 15 is also distributed in the center symmetrically, which is easy to cancel each other, balance the force, reduce The force between the two small bending blocks 10 ensures the stability of the connection.

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Abstract

Provided are a bending part (21) of an endoscope, and an endoscope (20). The bending part (21) of the endoscope comprises a plurality of bending blocks (10) connected end to end. Two adjacent bending blocks (10) are rotatably connected by means of connecting parts (11). A cutting line (19) is provided close to an end face (10a) of one end of the bending block (10). A punching part (191) is provided between the end face (10a) of the bending block (10) and the cutting line (19). The punching part (191) is recessed towards the inner side of the bending block (10) to form a guiding part (192) for threading a pull line (22). A buffering groove (193) is provided between the cutting line (19) and an end face (10b) of the other end of the bending block (10). The buffering groove (193) is used for buffering a punching pressure.

Description

内窥镜的弯曲部及内窥镜Endoscope bending part and endoscope
本申请要求：2018年12月25日递交、发明名称为“内窥镜的弯曲部及内窥镜”的中国专利申请2018115948221；2018年12月25日递交、发明名称为“内窥镜的弯曲部及内窥镜”的中国专利申请2018115948448的优先权，在此通过引用将其全部内容合并于此。This application requires: Chinese patent application 2018115948221 filed on December 25, 2018 with the invention titled "Endoscopic Bend and Endoscope"; filed on December 25, 2018 with the invention titled "Endoscopic Bend The priority of the Chinese patent application 2018115948448 of "Ministry and Endoscope" is hereby incorporated by reference in its entirety.
技术领域Technical field
本发明涉及一种内窥镜部件，特别是一种内窥镜的弯曲部及内窥镜。The invention relates to an endoscope component, in particular to a curved part of an endoscope and an endoscope.
背景技术Background technique
内窥镜是一种应用非常广泛的医疗及工业检测器械，其弯曲部是由钢丝绳牵拉多个彼此相连的蛇骨关节的方法实现弯曲变向的。相邻蛇骨关节通过铆钉铆合连接形成铰链，从而实现相对转动。Endoscope is a very widely used medical and industrial detection instrument. The bending part is achieved by bending multiple snake bone joints connected to each other by a steel wire rope. Adjacent snake bone joints are connected by rivets to form hinges, thereby achieving relative rotation.
但是，由于铆钉铆合连接的制造和装配工艺的精度要求较高，如果生产工艺或操作工艺稍有误差，则会导致两个蛇骨关节之间的铆接连接存在一定缺陷。尤其对于内径较小的细径内窥镜，两蛇骨关节之间依然采用铆钉铆接固定的连接方法来实现就显得更为困难。However, due to the high accuracy requirements of the manufacturing and assembly processes of the rivet riveting connection, if there is a slight error in the production process or operation process, it will cause certain defects in the riveting connection between the two snake bone joints. Especially for the small-diameter endoscope with a small inner diameter, it is more difficult to realize the connection method of rivet fixing between the two snake bone joints.
因此，为实现对内径较小的内窥镜的顺利制作，发展生产出不带有铆钉的蛇骨关节，两个相邻的蛇骨关节之间不是通过铆钉来铆接的。同时，由于不设有铆钉，则两个相邻的蛇骨关节之间的连接强度较弱。在使用过程中，相邻两个蛇骨关节之间连接处容易发生变形或移位，导致两个相邻的蛇骨关节之间不能实现相对转动，影响内窥镜的正常使用。Therefore, in order to realize the smooth manufacture of endoscopes with a small inner diameter, a snake bone joint without rivets is developed and produced, and two adjacent snake bone joints are not riveted by rivets. At the same time, since no rivets are provided, the connection strength between two adjacent snake bone joints is weak. During use, the joint between two adjacent snake bone joints is easily deformed or displaced, resulting in the relative rotation between the two adjacent snake bone joints, which affects the normal use of the endoscope.
发明内容Summary of the invention
本发明的目的在于提供一种能够保持两个弯曲块之间稳定连接的内窥镜的弯曲部及内窥镜。An object of the present invention is to provide a bending portion and an endoscope of an endoscope capable of maintaining stable connection between two bending blocks.
一种内窥镜的弯曲部，包括多个首尾连接的弯曲块，相邻两个弯曲块之间通过连接部可转动连接，所述弯曲块靠近一端端面处设有切割线，所述弯曲块的端面与所述切割线之间为冲压部，所述冲压部朝向所述弯曲块的内侧凹陷，形成用于穿设牵引线的导向部，所述切割线与所述弯曲块的另一端端面之间设有缓冲槽，所述缓冲槽用于缓冲冲压压力。A bending part of an endoscope includes a plurality of bending blocks connected end to end, adjacent two bending blocks are rotatably connected by a connecting part, and the bending block is provided with a cutting line near an end face at one end, and the bending block Between the end surface of the cutting line and the cutting line is a punching portion, the punching portion is recessed toward the inner side of the bending block to form a guide portion for threading the pulling line, the cutting line and the other end surface of the bending block A buffer groove is provided between the buffer grooves, which is used to buffer the stamping pressure.
在其中一实施方式中，所述缓冲槽的长度大于所述切割线的长度。In one embodiment, the length of the buffer groove is greater than the length of the cutting line.
在其中一实施方式中，所述切割线与所述缓冲槽关于同一轴线对称分布。In one embodiment, the cutting line and the buffer groove are symmetrically distributed about the same axis.
在其中一实施方式中，所述切割线的长度至少为所述缓冲槽的长度的1/2。In one embodiment, the length of the cutting line is at least 1/2 of the length of the buffer groove.
在其中一实施方式中，相邻两所述弯曲块之间设有两个所述连接部，两所述连接部沿所述弯曲块的径向相对设置。In one of the embodiments, two connecting portions are provided between two adjacent bending blocks, and the two connecting portions are oppositely arranged along the radial direction of the bending block.
在其中一实施方式中，多个所述弯曲块的连接部位于两条平行线上。In one embodiment, the connecting portions of the plurality of bending blocks are located on two parallel lines.
在其中一实施方式中，多个所述弯曲块的连接部位于四条平行线上。In one embodiment, the connecting portions of the plurality of bending blocks are located on four parallel lines.
在其中一实施方式中，所述连接部包括凹槽及凸起，所述凸起可转动收容于所述凹槽内，所述弯曲块的端面于所述连接部的两侧分别设有抵接面，所述凸起在所述凹槽内相对转动到最大角度，相邻两所述弯曲块的抵接面相抵接，使两所述弯曲块之间处于最大弯曲角度并进入锁止状态。In one of the embodiments, the connecting portion includes a groove and a protrusion, the protrusion is rotatably received in the groove, and end surfaces of the bending block are provided on both sides of the connecting portion The contact surface, the protrusion rotates relatively to the maximum angle in the groove, and the contact surfaces of the two adjacent bending blocks abut, so that the two bending blocks are at the maximum bending angle and enter the locked state .
在其中一实施方式中，相邻两所述弯曲块的抵接面相抵接，所述连接部设有限位结构，所述限位结构使所述凸起稳定收容于所述凹槽内。In one embodiment, the abutment surfaces of two adjacent bending blocks abut, and the connecting portion is provided with a limiting structure, and the limiting structure enables the protrusion to be stably received in the groove.
在其中一实施方式中，所述限位结构包括设于所述凹槽两侧的锁止部，所述凸起的两侧设有与所述锁止部配合的滑槽，所述凹槽的两侧设有锁止部，所述锁止部沿所述滑槽可滑动，所述滑槽的开口端设有限位部，所述锁止部能够与所述限位部相卡止，以使所述锁止部限位于所述滑槽内。In one embodiment, the limiting structure includes locking parts provided on both sides of the groove, and slide grooves that cooperate with the locking parts are provided on both sides of the protrusion, and the groove Locking portions are provided on both sides of the door, the locking portion is slidable along the chute, and an opening end of the chute is provided with a limiting portion, and the locking portion can be locked with the limiting portion, In order to limit the locking part to the chute.
在其中一实施方式中，所述锁止部包括第一锁止部及第二锁止部，所述第一锁止部与所述第二锁止部沿所述滑槽滑动，所述第一锁止部的一侧与所述凸起相抵持，则所述第二锁止部与所述限位部卡持连接。In one of the embodiments, the locking portion includes a first locking portion and a second locking portion, the first locking portion and the second locking portion slide along the sliding groove, the first When one side of a locking portion is against the protrusion, the second locking portion is clamped to the limiting portion.
在其中一实施方式中，所述锁止部沿所述滑槽的弧形滑动轨迹对应的角度等于13度，每个所述滑槽对应的弧度大于13度。In one of the embodiments, the angle corresponding to the arc-shaped sliding trajectory of the locking portion is equal to 13 degrees, and the arc corresponding to each chute is greater than 13 degrees.
在其中一实施方式中，所述锁止部为凸翅，所述凸翅为扇形。In one embodiment, the locking portion is a fin, and the fin is fan-shaped.
在其中一实施方式中，所述限位结构包括设于所述凸起的两侧的环形臂及设于所述凹槽的两侧的环形槽，所述环形臂对应收容于所述环形槽内，所述环形臂可转动收容于所述环形槽内，所述环形臂沿所述环形槽弧形滑动轨迹对应的角度大于等于所述凸起与所述凹槽相对转动的最大角度。In one embodiment, the limiting structure includes ring arms provided on both sides of the protrusion and ring grooves provided on both sides of the groove, and the ring arms are correspondingly received in the ring groove Inside, the ring arm is rotatably received in the ring groove, and the angle corresponding to the arc sliding path of the ring arm along the ring groove is greater than or equal to the maximum angle of relative rotation of the protrusion and the groove.
在其中一实施方式中，所述环形臂为多个，所述环形槽为多个。In one embodiment, there are multiple annular arms and multiple annular grooves.
在其中一实施方式中，多个所述环形臂与多个所述环形槽所对应的圆心角相同。In one of the embodiments, the plurality of ring arms and the plurality of ring grooves have the same center angle.
在其中一实施方式中，所述环形槽对称设于所述凹槽的两侧，所述环形臂对称设于所述凸起的两侧。In one embodiment, the annular groove is symmetrically arranged on both sides of the groove, and the annular arm is symmetrically arranged on both sides of the protrusion.
在其中一实施方式中，所述凹槽两侧的所述环形槽非对称设于所述凹槽的两侧，所述凸起两侧的环形臂非对称设于所述凸起的两侧。In one embodiment, the annular grooves on both sides of the groove are provided asymmetrically on both sides of the groove, and the annular arms on both sides of the protrusion are provided asymmetrically on both sides of the protrusion .
在其中一实施方式中，所述凸起与所述凹槽的接触面为光滑面，所述锁止部与所述滑槽的接触面为光滑过渡面。In one embodiment, the contact surface between the protrusion and the groove is a smooth surface, and the contact surface between the locking portion and the slide groove is a smooth transition surface.
在其中一实施方式中，所述内窥镜的弯曲部由激光切割技术制作而成。In one embodiment, the curved portion of the endoscope is made by laser cutting technology.
一种内窥镜，包括弯曲部及设于所述弯曲部内的牵引线，所述牵引线串联连接多个所述弯曲块。An endoscope includes a bending portion and a pulling wire provided in the bending portion, and the pulling wire is connected in series with a plurality of the bending blocks.
在其中一实施方式中，所述内窥镜包括胶管，所述胶管直接套设于所述弯曲部的外侧，所述弯曲部包括多个首尾连接的弯曲块，所述弯曲部支撑所述胶管，所述弯曲部两端的外侧壁分别与所述胶管两端的外侧壁直接密封连接。In one of the embodiments, the endoscope includes a rubber tube, and the rubber tube is directly sleeved on the outer side of the bending part, the bending part includes a plurality of bending blocks connected end to end, and the bending part supports the rubber tube The outer sidewalls at both ends of the bent portion are directly and sealingly connected to the outer sidewalls at both ends of the hose, respectively.
内窥镜的弯曲部不设有铆钉，相邻两个弯曲块之间通过连接部连接，制作过程简单， 容易实现。当对冲压部冲压的时候，由于切割线的存在，方便导向部形成。冲压压力传递到切割线处，阻断压力传导，避免冲压压力对冲压部以外的部分产生影响，导致受力变形。The bending part of the endoscope is not provided with rivets, and the adjacent two bending blocks are connected by a connecting part, the manufacturing process is simple and easy to realize. When punching the punching part, due to the existence of the cutting line, it is convenient to form the guide part. The punching pressure is transmitted to the cutting line, blocking the pressure transmission, and avoiding the impact of the punching pressure on the parts other than the punching part, resulting in deformation of the force.
并且，该缓冲槽可以有效将对弯曲块的冲压应力均匀分散掉，对冲压作用进行隔离，以减小冲压工序对弯曲块造成的形变，防止连接部发生脱扣，保持两个弯曲块之间稳定连接。In addition, the buffer groove can effectively disperse the punching stress on the bending block uniformly, and isolate the punching action, so as to reduce the deformation of the bending block caused by the stamping process, prevent the connection part from tripping, and maintain the gap between the two bending blocks Stable connection.
附图说明BRIEF DESCRIPTION
图1为本实施方式的内窥镜的立体结构示意图；FIG. 1 is a schematic diagram of a stereoscopic structure of an endoscope according to this embodiment;
图2为图1所示内窥镜的连接部的局部结构的立体图；2 is a perspective view of a partial structure of a connecting portion of the endoscope shown in FIG. 1;
图3为图1所示的内窥镜的连接部的连接块的立体图；3 is a perspective view of a connecting block of a connecting portion of the endoscope shown in FIG. 1;
图4为图3所示的连接块的另一角度的结构示意图；4 is a schematic structural view of the connection block shown in FIG. 3 from another angle;
图5为图2所示的内窥镜的连接部另一实施方式的结构示意图；FIG. 5 is a schematic structural view of another embodiment of the connecting portion of the endoscope shown in FIG. 2;
图6为图2所示的内窥镜的连接部另一实施方式的结构示意图；6 is a schematic structural view of another embodiment of the connecting portion of the endoscope shown in FIG. 2;
图7为图6所示的连接部的连接块的结构示意图；7 is a schematic structural view of a connecting block of the connecting portion shown in FIG. 6;
图8为图7所示的连接块的另一角度的结构示意图；8 is a schematic structural view of the connection block shown in FIG. 7 from another angle;
图9为图7所示的连接块的另一角度的结构示意图；9 is a schematic structural view of the connection block shown in FIG. 7 from another angle;
图10为图6所示的连接部的另一状态的结构示意图；10 is a schematic structural view of another state of the connecting portion shown in FIG. 6;
图11为图2所示的内窥镜的连接部另一实施方式的结构示意图；11 is a schematic structural view of another embodiment of the connecting portion of the endoscope shown in FIG. 2;
图12为图1所示的连接部的剖视图。Fig. 12 is a cross-sectional view of the connecting portion shown in Fig. 1.
附图标记说明如下：20、内窥镜；21、弯曲部；22、牵引线；23、胶管；201、内窥镜前端；202、内窥镜后端；10、弯曲块；101、第一弯曲块；102、第二弯曲块；10a、第一端；10b、第二端；11连接部、12、凹槽；120、开口端；121、环形臂；122、锁止部；1221、第一锁止部；1222、第二锁止部；125、凸翅；13、凸起；131、滑槽；132、限位部；14、抵接面。Reference numerals are described as follows: 20, endoscope; 21, bending part; 22, pulling wire; 23, hose; 201, front end of endoscope; 202, rear end of endoscope; 10, bending block; 101, first Bending block; 102, second bending block; 10a, first end; 10b, second end; 11 connecting portion, 12, groove; 120, open end; 121, ring arm; 122, locking portion; 1221, first A locking portion; 1222, a second locking portion; 125, a fin; 13, a protrusion; 131, a chute; 132, a limit portion; 14, an abutment surface.
具体实施方式detailed description
尽管本发明可以容易地表现为不同形式的实施方式，但在附图中示出并且在本说明书中将详细说明的仅仅是其中一些具体实施方式，同时可以理解的是本说明书应视为是本发明原理的示范性说明，而并非旨在将本发明限制到在此所说明的那样。Although the present invention can be easily expressed as different forms of implementations, only some of the specific implementations are shown in the drawings and will be described in detail in this specification, and it is understood that this specification should be regarded as this An exemplary description of the principles of the invention is not intended to limit the invention to what is described herein.
由此，本说明书中所指出的一个特征将用于说明本发明的一个实施方式的其中一个特征，而不是暗示本发明的每个实施方式必须具有所说明的特征。此外，应当注意的是本说明书描述了许多特征。尽管某些特征可以组合在一起以示出可能的***设计，但是这些特征也可用于其他的未明确说明的组合。由此，除非另有说明，所说明的组合并非旨在限制。Thus, one feature indicated in this specification will be used to describe one of the features of one embodiment of the present invention, rather than implying that each embodiment of the present invention must have the described feature. In addition, it should be noted that this specification describes many features. Although certain features can be combined to show possible system designs, these features can also be used in other combinations that are not explicitly described. Thus, unless stated otherwise, the combinations described are not intended to be limiting.
在附图所示的实施方式中，方向的指示(诸如上、下、左、右、前和后)用于解释本发明的各种元件的结构和运动不是绝对的而是相对的。当这些元件处于附图所示的位置时， 这些说明是合适的。如果这些元件的位置的说明发生改变时，则这些方向的指示也相应地改变。In the embodiments shown in the drawings, indications of directions (such as up, down, left, right, front, and back) are used to explain that the structures and movements of various elements of the present invention are not absolute but relative. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the description of the position of these elements changes, the indications of these directions also change accordingly.
以下结合本说明书的附图，对本发明的实施方式予以进一步地详尽阐述。The embodiments of the present invention will be further elaborated below in conjunction with the drawings of this specification.
请参见图1，本发明提出一种内窥镜20及内窥镜的弯曲部21。Referring to FIG. 1, the present invention provides an endoscope 20 and an endoscope bending portion 21.
一种内窥镜20包括弯曲部21及设于弯曲部21内的牵引线22。牵引线22牵引弯曲部21，使弯曲部21弯折，起到牵引弯曲部21弯折的目的。An endoscope 20 includes a curved portion 21 and a pulling wire 22 provided in the curved portion 21. The pulling wire 22 pulls the bent portion 21 and bends the bent portion 21 to serve the purpose of pulling the bent portion 21 to bend.
多个弯曲块10由牵引线22依次串联连接。弯曲部21包括多个依次连接的弯曲块10。弯曲块10包括靠近内窥镜前端201的首部弯曲块、靠近内窥镜后端202的尾部弯曲块及位于首部弯曲块与尾部弯曲块之间的中部弯曲块。首部弯曲块与尾部弯曲块的结构与中部弯曲块的结构相似，其不同之处主要在于，首部弯曲块的前端及尾部弯曲块的后端不设有用于连接弯曲块的连接部，以使首部弯曲块为最前端的弯曲块，尾部弯曲块为最后端的弯曲块。The plurality of bending pieces 10 are connected in series by the pull wire 22 in sequence. The bending portion 21 includes a plurality of bending pieces 10 connected in sequence. The bending block 10 includes a head bending block near the front end 201 of the endoscope, a tail bending block close to the rear end 202 of the endoscope, and a middle bending block between the head bending block and the tail bending block. The structure of the first bending piece and the tail bending piece is similar to the structure of the middle bending piece, the difference is mainly that the front end of the first bending piece and the rear end of the tail bending piece are not provided with a connecting portion for connecting the bending piece, so that the head The bending block is the bending block at the forefront, and the bending block at the tail is the bending block at the rearmost end.
请参阅图2，下文以中部弯曲块为例进行说明：相邻两个弯曲块10之间为可转动连接。为方便说明，请同时参阅图3及图4，弯曲块10的两端分别为第一端10a和第二端10b。相邻两个弯曲块中，其中一弯曲块为第一弯曲块101，另一弯曲块为第二弯曲块102。Please refer to FIG. 2, the middle bending block is taken as an example for description below: two adjacent bending blocks 10 are rotatably connected. For convenience of description, please refer to FIGS. 3 and 4 at the same time. The two ends of the bending block 10 are a first end 10a and a second end 10b, respectively. Among the two adjacent bending blocks, one bending block is the first bending block 101 and the other bending block is the second bending block 102.
弯曲块10靠近端面处设有切割线19。弯曲块10的第一端10a端面与切割线19之间为冲压部191。冲压部191朝向弯曲块10的内侧凹陷，形成用于穿设牵引线22的导向部192。则牵引线22可以穿过导向部192，以使牵引线22与弯曲部21进行连接，并实现对弯曲部21的弯折进行牵引引导的作用。The bending block 10 is provided with a cutting line 19 near the end surface. Between the end surface of the first end 10a of the bending block 10 and the cutting line 19 is a punching portion 191. The punched portion 191 is recessed toward the inner side of the bending block 10 to form a guide portion 192 for passing the pulling wire 22. Then, the pulling wire 22 can pass through the guide portion 192, so that the pulling wire 22 is connected to the bending portion 21, and the function of guiding the bending of the bending portion 21 is achieved.
当对冲压部191冲压的时候，由于切割线19的存在，方便导向部192形成。冲压压力传递到切割线19处，阻断压力传导，避免冲压压力对冲压部191以外的部分产生影响，导致受力变形。When punching the punching portion 191, due to the presence of the cutting line 19, it is convenient for the guide portion 192 to be formed. The punching pressure is transmitted to the cutting line 19, blocking the conduction of pressure, and avoiding the impact of the punching pressure on the parts other than the punching portion 191, resulting in deformation of the force.
并且，切割线19与弯曲块10的第二端10b之间设有缓冲槽193。缓冲槽193的长度大于切割线19的长度。缓冲槽193用于进一步缓冲冲压压力。该缓冲槽191可以有效将对弯曲块10的冲压应力均匀分散掉，对冲压作用进行隔离，以减小冲压工序对弯曲块10造成的形变，防止连接部11的凸起13与凹槽12之间发生脱扣。In addition, a buffer groove 193 is provided between the cutting line 19 and the second end 10b of the bending block 10. The length of the buffer groove 193 is greater than the length of the cutting line 19. The buffer groove 193 is used to further buffer the punching pressure. The buffer groove 191 can effectively disperse the punching stress on the bending block 10 and isolate the punching action, so as to reduce the deformation of the bending block 10 caused by the punching process, and prevent the protrusion 13 and the groove 12 of the connecting portion 11 A trip occurred.
具体在本实施方式中，切割线19与缓冲槽193的设置位置为，切割线19与缓冲槽193关于同一轴线对称分布。切割线19的两端与缓冲槽193的两端相互对称设置。当冲压部191冲压的时候，压力传导至切割线19。切割线19传导到冲压压力，再次传递到缓冲槽193。缓冲槽193与切割线19正相对，从而使压力均匀分散到缓冲槽193上。Specifically, in the present embodiment, the cutting lines 19 and the buffer grooves 193 are arranged so that the cutting lines 19 and the buffer grooves 193 are symmetrically distributed about the same axis. The two ends of the cutting line 19 and the two ends of the buffer groove 193 are arranged symmetrically with each other. When the punching portion 191 punches, the pressure is transmitted to the cutting line 19. The cutting line 19 is transmitted to the punching pressure, and is transferred to the buffer groove 193 again. The buffer groove 193 is directly opposite to the cutting line 19, so that the pressure is evenly distributed to the buffer groove 193.
并且，切割线19的长度至少为缓冲槽193的长度的1/2，则缓冲槽193的长度在尽可能多的分散冲压压力的时候，避免由于开设缓冲槽193而影响弯曲块10的整体强度。具体地，切割线19的长度为缓冲槽193的长度的5/7。则缓冲槽193能够较好的分散掉冲压压力，并保证弯曲块10的整体强度。Moreover, if the length of the cutting line 19 is at least 1/2 of the length of the buffer groove 193, when the length of the buffer groove 193 is dispersed as much as possible, the impact of the buffer groove 193 on the overall strength of the bending block 10 is avoided. . Specifically, the length of the cutting line 19 is 5/7 of the length of the buffer groove 193. Then, the buffer groove 193 can better disperse the punching pressure and ensure the overall strength of the bending block 10.
缓冲槽193可以为一个或多个，可以尽量分散应力。多个缓冲槽193的长度可以不同， 并列排布。There can be one or more buffer grooves 193, which can disperse the stress as much as possible. The lengths of the multiple buffer grooves 193 may be different, and they are arranged side by side.
相邻两个弯曲块10之间通过连接部11可转动连接。第一弯曲块101的第一端10a与第二弯曲块102的第二端10b通过连接部11实现可转动连接。The two adjacent bending pieces 10 are rotatably connected by a connecting portion 11. The first end 10 a of the first bending block 101 and the second end 10 b of the second bending block 102 are rotatably connected through the connecting portion 11.
并且，具体地，相邻两弯曲块10之间设有两个连接部11。即，第一弯曲块101与第二弯曲块102通过两个连接部10可转动连接。两连接部11沿弯曲块10的径向相对设置。即，相邻两个弯曲块10之间通过两个连接部11实现可转动连接，且两个连接部11位于同一直线上。And, specifically, two connecting portions 11 are provided between two adjacent bending pieces 10. That is, the first bending block 101 and the second bending block 102 are rotatably connected through the two connecting portions 10. The two connecting portions 11 are opposite to each other along the radial direction of the bending block 10. That is, two adjacent connecting pieces 10 are rotatably connected by two connecting portions 11, and the two connecting portions 11 are located on the same straight line.
具体在本实施方式中，连接部11包括凹槽12及凸起13。凸起13可转动收容于凹槽12内。其中，一个弯曲块10的连接部11可以是凹槽12也可以是凸起13，只要与其连接的另一个弯曲块10的连接部11能够与之配合连接即可。并且，弯曲块10的两侧均设有连接部11，则其中一个弯曲块10的第一端10a及第二端10b上。Specifically in this embodiment, the connecting portion 11 includes a groove 12 and a protrusion 13. The protrusion 13 is rotatably received in the groove 12. Wherein, the connecting portion 11 of one bending block 10 may be a groove 12 or a protrusion 13, as long as the connecting portion 11 of the other bending block 10 connected thereto can be mated with it. Moreover, the connecting portions 11 are provided on both sides of the bending block 10, and the first end 10a and the second end 10b of one of the bending blocks 10 are provided.
切割线19的开设位置位于两连接部11之间。具体可以为，凸起13设于弯曲块10的一端，则切割线19相对于凸起13设于弯曲块10的另一端。切割线19的开设位置最低限度的降低对弯曲块10的强度影响，保证弯曲块10自身的强度。The cutting line 19 is located between the two connecting portions 11. Specifically, the protrusion 13 is provided at one end of the bending block 10, and the cutting line 19 is provided at the other end of the bending block 10 relative to the protrusion 13. The minimum reduction of the opening position of the cutting line 19 has an impact on the strength of the bending block 10 to ensure the strength of the bending block 10 itself.
凹槽12可以设于第一弯曲块101的第二端10b，则第二弯曲块102的第二端10b对应设有凸起13。则第一弯曲块101的第一端10a设有凸起13，第二弯曲块102的第一端10a则设有凹槽12，以满足第一弯曲块101、第二弯曲块102与其他弯曲块进行可转动连接。The groove 12 may be provided at the second end 10b of the first bending block 101, and the second end 10b of the second bending block 102 is correspondingly provided with a protrusion 13. Then, the first end 10a of the first bending block 101 is provided with a protrusion 13, and the first end 10a of the second bending block 102 is provided with a groove 12 to satisfy the first bending block 101, the second bending block 102 and other bending The blocks are rotatably connected.
可以理解，在其他实施方式中，第一弯曲块101的第一端10a也可以设有凸起13，第二弯曲块102的第二端10b对应设有凹槽12。则对应地，则第一弯曲块101的第二端10a设有凹槽12，第二弯曲块102的第一端10a则设有凸起13，以满足第一弯曲块101、第二弯曲块102与其他弯曲块进行可转动连接。It can be understood that in other embodiments, the first end 10 a of the first bending block 101 may also be provided with a protrusion 13, and the second end 10 b of the second bending block 102 is correspondingly provided with a groove 12. Correspondingly, the second end 10a of the first bending block 101 is provided with a groove 12, and the first end 10a of the second bending block 102 is provided with a protrusion 13 to satisfy the first bending block 101 and the second bending block 102 is rotatably connected with other bending blocks.
或者，在其他实施方式中，第一弯曲块101的第一端10a也可以设有凸起13，第二弯曲块102的第二端10b对应设有凹槽12。则，则第一弯曲块101的第二端10a也可以设有凸起13，第二弯曲块102的第一端10a则设有凹槽12，以满足第一弯曲块101、第二弯曲块102与其他弯曲块进行可转动连接。只要能够使相邻两个弯曲块10配合连接即可。Alternatively, in other embodiments, the first end 10 a of the first bending block 101 may also be provided with a protrusion 13, and the second end 10 b of the second bending block 102 is correspondingly provided with a groove 12. Then, the second end 10a of the first bending block 101 may also be provided with a protrusion 13, and the first end 10a of the second bending block 102 is provided with a groove 12 to satisfy the first bending block 101 and the second bending block 102 is rotatably connected with other bending blocks. It suffices that the two adjacent bending blocks 10 can be cooperatively connected.
两个弯曲块10之间的连接部11的个数可以为一个或多个。The number of connecting portions 11 between the two bending pieces 10 may be one or more.
具体在本实施方式中，弯曲块10的第一端10a设有两个凸起13，第二端10b设有两个凹槽12。因此，每个弯曲块10的形状即为一致形状。多个弯曲块10按照统一的方式排列制造即可，方便制造工艺的实现。Specifically in this embodiment, the first end 10 a of the bending block 10 is provided with two protrusions 13, and the second end 10 b is provided with two grooves 12. Therefore, the shape of each bending piece 10 is a uniform shape. The multiple bending blocks 10 can be arranged and manufactured in a uniform manner, which is convenient for the realization of the manufacturing process.
且两凹槽12位于同一直线上，且两凸起13位于同一直线上，两凹槽12所在的直线与两凸起13所在的直线相互垂直。当相邻三个弯曲块10发生相对转动的时候，上述四组凹槽12与凸起13相互配合，相邻三个弯曲块10相互连接的连接部11位于四条平行线上。 因此，上述弯曲部可以在四个方向上进行转动，可以较为自由准确的调整弯曲部的扭曲、转动角度。具有四个转动方向的弯曲部，适用于内径较大的腔体内，例如肠腔、胃腔等。Moreover, the two grooves 12 are located on the same straight line, and the two protrusions 13 are located on the same straight line. The straight line where the two grooves 12 are located and the straight line where the two protrusions 13 are located are perpendicular to each other. When the adjacent three bending blocks 10 relatively rotate, the above-mentioned four sets of grooves 12 and the protrusions 13 cooperate with each other, and the connecting portion 11 connecting the adjacent three bending blocks 10 is located on four parallel lines. Therefore, the bending portion can be rotated in four directions, and the twisting and turning angle of the bending portion can be adjusted relatively freely and accurately. The curved part with four rotation directions is suitable for a cavity with a large inner diameter, such as an intestinal cavity and a gastric cavity.
可以理解，两个弯曲块10之间的连接部11的个数还可以为一个。即，相邻三个弯曲块10相互连接的连接部11位于两条平行线上。则上述弯曲部能够在两个方向上进行转动，则弯曲部的转动角度能够较为方便控制。具有两个转动方向的弯曲部，适用于内径较小的腔体内，例如肺腔。It can be understood that the number of the connecting portions 11 between the two bending blocks 10 may also be one. That is, the connecting portion 11 where the adjacent three bending pieces 10 are connected to each other is located on two parallel lines. Then, the bending portion can be rotated in two directions, and the rotation angle of the bending portion can be controlled more conveniently. The curved portion with two rotation directions is suitable for a cavity with a small inner diameter, such as a lung cavity.
具体在本实施方式中，内窥镜的弯曲部由激光切割技术制作而成。因此，为保证弯曲块10的连接部11之间的转动的光滑度及各个接触部件之间的光滑性，在激光切割后用抛光方式对焊渣(熔渣)的去除来保证两节弯曲块10之间运动时候无阻碍。Specifically in this embodiment, the curved portion of the endoscope is made by laser cutting technology. Therefore, in order to ensure the smoothness of the rotation between the connecting portions 11 of the bending pieces 10 and the smoothness between the contact parts, the welding slag (melting slag) is removed by polishing after laser cutting to ensure two bending pieces There is no hindrance when moving between 10.
并且，凸起13与凹槽12的接触面为光滑面，可以保证凸起13在凹槽12内顺利滑动，及环形臂15在环形槽16内顺利滑动，环形臂15在环形槽16的接触面为光滑过渡面，以使两两接触面发生相对顺畅的转动。Moreover, the contact surface between the protrusion 13 and the groove 12 is a smooth surface, which can ensure that the protrusion 13 slides smoothly in the groove 12 and the ring arm 15 slides smoothly in the ring groove 16 and the ring arm 15 contacts the ring groove 16 The surface is a smooth transition surface, so that the two contact surfaces rotate relatively smoothly.
具体在本实施方式中，凸起13包括头端13a及支撑部13b。头端13a可转动收容于凹槽12内。支撑部13b用于与弯曲块10连接。凹槽12与凸起13的头端13a的形状相适配，以使凸起13能够限位收容于凹槽12内。Specifically in this embodiment, the protrusion 13 includes a head end 13a and a support portion 13b. The head end 13a is rotatably received in the groove 12. The support portion 13b is used to connect with the bending block 10. The groove 12 is adapted to the shape of the head end 13 a of the protrusion 13, so that the protrusion 13 can be limitedly received in the groove 12.
并且，凹槽12的开口端120收缩，以避免凸起13从凹槽12内脱离。具体的，凹槽12为圆形凹槽。则头端13a也为圆形。Moreover, the open end 120 of the groove 12 is contracted to prevent the protrusion 13 from escaping from the groove 12. Specifically, the groove 12 is a circular groove. Then, the head end 13a is also circular.
并且，支撑部13b与弯曲块10连接的一端的宽度大于支撑部13b与头端13a连接的一端的宽度。则支撑部13b与弯曲块10连接的面积较大，可以增大凸起13与弯曲块10之间的连接强度，保证连接部11与连接部11之间的连接强度。Moreover, the width of the end of the support portion 13b connected to the bending block 10 is greater than the width of the end of the support portion 13b connected to the head end 13a. Then, the area where the support portion 13b is connected to the bending block 10 is large, and the connection strength between the protrusion 13 and the bending block 10 can be increased to ensure the connection strength between the connection portion 11 and the connection portion 11.
并且，由于凸起13及凹槽12位于弯曲块10的环形侧壁上，则凸起13与凹槽12均具有弧度。相邻两个弯曲块10的内径大小相同，则凸起13与凹槽12的弯曲弧度大小相同。Moreover, since the protrusion 13 and the groove 12 are located on the annular side wall of the bending block 10, both the protrusion 13 and the groove 12 have an arc. If the inner diameters of two adjacent bending blocks 10 are the same, the bending arcs of the protrusion 13 and the groove 12 are the same.
弯曲块10的端面于连接部11的两侧分别设有抵接面14，当相邻两个弯曲块10的两个抵接面14相互抵持的时候，则两个弯曲块10停止转动，则两个弯曲块10之间达到最大的夹角。凸起13在凹槽12内转动，当相邻两弯曲块10的抵接面14相抵接的时候，凸起13停止转动，达到凸起13与凹槽12相对转动的最大角度。The end surfaces of the bending block 10 are provided with abutting surfaces 14 on both sides of the connecting portion 11, when the two abutting surfaces 14 of two adjacent bending blocks 10 abut against each other, the two bending blocks 10 stop rotating, Then the maximum angle between the two bending blocks 10 is reached. The protrusion 13 rotates in the groove 12. When the abutting surfaces 14 of the two adjacent bending pieces 10 abut, the protrusion 13 stops rotating, reaching the maximum angle of relative rotation between the protrusion 13 and the groove 12.
请同时参阅图3及图4，具体在本实施方式中，抵接面14为圆弧形凹面。当两两抵接面14相互抵持的时候，圆弧形凹面可以使两两抵接面14保持较大面积接触，使两个弯曲块10能够较稳定保持定位。Please refer to FIGS. 3 and 4 at the same time. Specifically, in this embodiment, the abutment surface 14 is an arc-shaped concave surface. When the two abutting surfaces 14 abut against each other, the arc-shaped concave surface can enable the two abutting surfaces 14 to maintain a larger area of contact, so that the two bending blocks 10 can maintain a stable position.
圆弧形凹面的最低点与连接部11相对。当两个弯曲块10的抵接面14的最低点相互抵持的时候，则两个弯曲块10的中心轴之间形成最大夹角。该最大夹角的角度大小是根据内窥镜的使用需求进行设计得来的，对于不同型号及不同使用需求的内窥镜，相邻两个弯曲块10的中心轴之间的最大夹角也可以不同。The lowest point of the arc-shaped concave surface is opposed to the connecting portion 11. When the lowest points of the abutting surfaces 14 of the two bending blocks 10 abut against each other, the maximum angle between the central axes of the two bending blocks 10 is formed. The angle of the maximum included angle is designed according to the use requirements of the endoscope. For different types of endoscopes and different use requirements, the maximum included angle between the central axes of two adjacent bending blocks 10 is also Can be different.
并且，抵接面14倒圆角。倒圆角后的抵接面14一方面可以提高弯曲部的表面光滑度，避免抵接面14的尖锐的侧棱影响内窥镜的运动。并且，当两个抵接面14相互抵持的时候，倒圆角后的抵接面14之间可以避免两个抵接面14之间发生干涉，保证两个弯曲块10之间的形成的夹角大小一致，提高内窥镜的弯曲精度。In addition, the contact surface 14 is rounded. On the one hand, the abutment surface 14 after rounding can improve the surface smoothness of the curved portion, and avoid the sharp side edges of the abutment surface 14 from affecting the movement of the endoscope. Moreover, when the two abutting surfaces 14 abut against each other, the interference between the abutting surfaces 14 after the rounding can avoid interference between the two abutting surfaces 14 and ensure the formation between the two bending blocks 10 The included angle is the same size, which improves the bending accuracy of the endoscope.
请参阅图2，连接部11设有限位结构110。限位结构110使凸起13稳定收容于凹槽12内。Please refer to FIG. 2, the connecting portion 11 is provided with a limiting structure 110. The limiting structure 110 enables the protrusion 13 to be stably received in the groove 12.
在其中一实施方式中，限位结构110包括设于凸起的两侧的环形臂15及设于凹槽的两侧的环形槽16，环形臂15对应收容于环形槽16内，环形臂15可转动收容于环形槽16内，环形臂15沿环形槽16弧形滑动轨迹对应的角度大于等于凸起与凹槽相对转动的最大角度。In one embodiment, the limiting structure 110 includes annular arms 15 provided on both sides of the protrusion and annular grooves 16 provided on both sides of the groove. The annular arm 15 is correspondingly received in the annular groove 16 and the annular arm 15 It is rotatably accommodated in the annular groove 16, and the angle corresponding to the circular sliding path of the annular arm 15 along the circular groove 16 is greater than or equal to the maximum angle of relative rotation between the protrusion and the groove.
凸起13的两侧分别设有环形臂15，凹槽12的两侧分别设有环形槽16。环形臂15对应收容于环形槽16内。环形臂15可转动收容于环形槽16内。 Ring arms 15 are respectively provided on both sides of the protrusion 13, and ring grooves 16 are respectively provided on both sides of the groove 12. The ring arm 15 is correspondingly received in the ring groove 16. The ring arm 15 is rotatably received in the ring groove 16.
本实施方式的弯曲部的弯曲块10之间通过连接部11连接，并且两个连接部11之间除了通过凸起13与凹槽12可转动连接，还通过环形臂15与环形槽16可转动连接，从而可以增强连接部11的连接强度。当弯曲部受力弯曲的时候，两个弯曲块10之间的受力可以通过分散在凸起13与凹槽12之间、环形臂15与环形槽16之间，避免受力集中，使两个弯曲块10之间的连接部11受力变形，而影响弯曲部的正常使用。The bending pieces 10 of the bending portion of this embodiment are connected by a connecting portion 11, and the two connecting portions 11 are rotatably connected by a protrusion 13 and a groove 12, and are also rotatable by a ring arm 15 and a ring groove 16 The connection makes it possible to enhance the connection strength of the connection portion 11. When the bending part is bent by force, the force between the two bending pieces 10 can be dispersed between the protrusion 13 and the groove 12 and between the ring arm 15 and the ring groove 16 to avoid the concentration of the force and make the two The connecting portion 11 between the bending pieces 10 is deformed by force, which affects the normal use of the bending portion.
环形臂15和环形槽16可以为一个或多个。环形槽16对称设于凹槽12的两侧。环形臂15对称设于凸起13的两侧。因此，左右两侧的环形槽16的弧长及其对应的圆心角相等，左右两侧的环形臂15的弧长及其对应的圆心角相等。There may be one or more annular arms 15 and annular grooves 16. The annular groove 16 is symmetrically provided on both sides of the groove 12. The ring arms 15 are symmetrically arranged on both sides of the protrusion 13. Therefore, the arc lengths of the annular grooves 16 on the left and right sides and their corresponding center angles are equal, and the arc lengths of the ring arms 15 on the left and right sides and their corresponding center angles are equal.
并且，环形槽16的对称轴与多个环形臂15的对称轴相平行，以使环形槽16与环形臂15正交连接。因此，两对称轴之间的夹角即为两个弯曲块10之间相对转动的角度。Moreover, the axis of symmetry of the ring groove 16 is parallel to the axis of symmetry of the plurality of ring arms 15 so that the ring groove 16 and the ring arm 15 are orthogonally connected. Therefore, the angle between the two axes of symmetry is the angle of relative rotation between the two bending blocks 10.
在其他实施方式中，环形槽16的对称轴与多个环形臂15的对称轴也可以相交。则环形槽16与环形臂15不正交。同样，当两个弯曲块10相对转动的时候，环形臂15也可以在环形槽16内相对转动。In other embodiments, the axis of symmetry of the ring groove 16 and the axis of symmetry of the plurality of ring arms 15 may also intersect. Then, the annular groove 16 and the annular arm 15 are not orthogonal. Similarly, when the two bending pieces 10 rotate relatively, the ring arm 15 can also rotate relatively in the ring groove 16.
环形臂15和环形槽16均为一个。并且，请参阅图5，凹槽12两侧的环形槽16可以非对称设于凹槽的两侧，凸起13两侧的环形臂15也可以非对称设于凸起13的两侧。具体地，左右两侧的环形槽16的弧长及其对应的圆心角也可以不相等，相应的，左右两侧的环形臂15的弧长及其对应的圆心角也可以不相等。例如，一侧的第一环形槽161的弧长较小，另一侧的第二环形槽162的弧长较大。相应地，一侧的第一环形臂151的弧长也较小，另一侧的第二环形臂152的弧长也较大。第一环形臂151沿第一环形槽161转动，第二环形臂152沿第二环形槽162转动。只要环形臂15在环形槽16内转动的弧度大小一致。同样可以达到，左右两侧的环形臂25在环形槽16内顺利转动，并且两侧环形臂15的相对转动不会发生相互干涉。Both the ring arm 15 and the ring groove 16 are one. In addition, referring to FIG. 5, the annular grooves 16 on both sides of the groove 12 may be asymmetrically provided on both sides of the groove, and the annular arms 15 on both sides of the protrusion 13 may also be provided asymmetrically on both sides of the protrusion 13. Specifically, the arc lengths of the annular grooves 16 on the left and right sides and their corresponding center angles may also be unequal. Correspondingly, the arc lengths of the ring arms 15 on the left and right sides and the corresponding center angles may also be unequal. For example, the arc length of the first annular groove 161 on one side is small, and the arc length of the second annular groove 162 on the other side is large. Accordingly, the arc length of the first ring arm 151 on one side is also small, and the arc length of the second ring arm 152 on the other side is also large. The first ring arm 151 rotates along the first ring groove 161, and the second ring arm 152 rotates along the second ring groove 162. As long as the arc of the rotation of the ring arm 15 in the ring groove 16 is the same. It can also be achieved that the ring arms 25 on the left and right sides rotate smoothly in the ring groove 16 and the relative rotation of the ring arms 15 on both sides does not interfere with each other.
请参见图6、图7、图8及图9，具体在本实施方式中，环形臂15为多个，环形槽16为多个。多个环形臂15与多个环形槽16所对应的圆心角相同。多个环形臂15分别与多个环形槽16相互配合，以增大两个弯曲块10之间的接触面积，能够更好的分散两个弯曲块10之间的作用力，保证两弯曲块10之间稳定连接。Please refer to FIG. 6, FIG. 7, FIG. 8 and FIG. 9. Specifically, in this embodiment, there are multiple annular arms 15 and multiple annular grooves 16. The central angles corresponding to the plurality of annular arms 15 and the plurality of annular grooves 16 are the same. The plurality of ring arms 15 cooperate with the plurality of ring grooves 16 respectively to increase the contact area between the two bending blocks 10, which can better distribute the force between the two bending blocks 10 and ensure the two bending blocks 10 Stable connection between.
两相邻环形槽16之间形成辅助臂17，两相邻环形臂15之间形成辅助槽18。辅助臂17可转动收容于辅助槽18内。多个环形臂15之间间隔形成有辅助槽18，多个环形槽16之间间隔形成有辅助臂17，因此通过辅助臂17与辅助槽18之间的相互作用，对两个弯曲块10之间的连接进一步增加了限定关系。An auxiliary arm 17 is formed between two adjacent annular grooves 16 and an auxiliary groove 18 is formed between two adjacent annular arms 15. The auxiliary arm 17 is rotatably received in the auxiliary groove 18. Auxiliary grooves 18 are formed between the plurality of annular arms 15, and an auxiliary arm 17 is formed between the plurality of annular grooves 16. Therefore, through the interaction between the auxiliary arm 17 and the auxiliary groove 18, one of the two bending blocks 10 The connection between them further increases the limited relationship.
辅助臂17的宽度等于环形臂15的宽度，辅助槽18的宽度等于环形槽16的宽度。因此，在两个弯曲块10相对转动的同时，辅助臂17的外侧壁与辅助槽18之间的内侧壁也相互接触，相互进一步增加了两个弯曲块10之间的接触面积，有效分散变形应力。The width of the auxiliary arm 17 is equal to the width of the ring arm 15, and the width of the auxiliary groove 18 is equal to the width of the ring groove 16. Therefore, while the two bending blocks 10 rotate relatively, the outer side wall of the auxiliary arm 17 and the inner side wall of the auxiliary groove 18 also contact each other, which further increases the contact area between the two bending blocks 10 and effectively disperses the deformation stress.
凸起13的一侧的环形臂15为偶数个，凹槽12的一侧的环形槽16为偶数个。具体在本实施方式中，凸起13的两侧分别设有两个环形臂15，凹槽12的两侧分别设有两个环形槽16。则相邻两个弯曲块10上，其中一个弯曲块10上开设有两个环形槽16，另一弯曲块10上也对应开设有两个辅助槽18，因此，两个弯曲块10本身的强度相近似，不会产生较大差异，从而保证弯曲部整体的强度均匀，保证受力均匀。There are an even number of annular arms 15 on one side of the protrusion 13, and an even number of annular grooves 16 on the side of the groove 12. Specifically in this embodiment, two annular arms 15 are respectively provided on both sides of the protrusion 13, and two annular grooves 16 are respectively provided on both sides of the groove 12. Then, on two adjacent bending blocks 10, one of the bending blocks 10 is provided with two annular grooves 16, and the other bending block 10 is correspondingly provided with two auxiliary grooves 18. Therefore, the strength of the two bending blocks 10 themselves Similar, there will be no big difference, so as to ensure uniform strength of the whole bending part, and ensure uniform stress.
环形臂15沿环形槽16弧形滑动轨迹对应的角度大于等于凸起13与凹槽12相对转动的最大角度。当位于两弯曲块10的一侧的抵接面14相互抵持的时候，则环形臂15在环形槽16内滑动，也转动到最大角度。因此，两弯曲块10的中心轴之间形成的最大夹角，环形槽16与环形臂15之间配合关系的不会影响两个弯曲块10之间的最大夹角，保证弯曲部能够顺利达到弯曲角度的要求，正常使用。The angle corresponding to the circular sliding path of the circular arm 15 along the circular groove 16 is greater than or equal to the maximum angle of relative rotation of the protrusion 13 and the groove 12. When the abutment surfaces 14 on one side of the two bending blocks 10 abut each other, the ring arm 15 slides in the ring groove 16 and also rotates to the maximum angle. Therefore, the maximum angle formed between the central axes of the two bending blocks 10 and the matching relationship between the annular groove 16 and the ring arm 15 will not affect the maximum angle between the two bending blocks 10, ensuring that the bending portion can be smoothly reached Bending angle requirements, normal use.
具体在本实施方式中，环形臂15沿环形槽16内弧形滑动轨迹对应的角度等于凸起13与凹槽12相对转动的最大角度。则，当两个位于两弯曲块10的一侧的抵接面14相互抵持的时候，则环形臂15在环形槽16内滑动，环形臂15的自由端也与环形槽16的一端相顶持，环形臂15在环形槽16内也转动到弧形滑动轨迹的最末端。则两个弯曲块10之间处于最大角度时的转动位置限定，即通过两个抵接面14相互抵持限位，也通过环形臂15与环形槽16之间的相互抵持进行限位。Specifically in this embodiment, the angle corresponding to the circular sliding path of the circular arm 15 along the circular groove 16 is equal to the maximum angle of relative rotation of the protrusion 13 and the groove 12. Then, when the two abutting surfaces 14 on one side of the two bending blocks 10 abut against each other, the ring arm 15 slides in the ring groove 16 and the free end of the ring arm 15 also opposes one end of the ring groove 16 Hold, the ring arm 15 also rotates to the very end of the arc-shaped sliding track in the ring groove 16. Then, the rotation position between the two bending pieces 10 at the maximum angle is limited, that is, the two abutment surfaces 14 abut against each other to limit the position, and also the ring arm 15 and the ring groove 16 mutually limit to limit the position.
请参见图10，具体在本实施方式中，环形臂15沿环形槽16内弧形滑动轨迹对应的角度等于13度。每个环形槽16对应的弧度至少大于13度。则凸起13与凹槽12相对转动的最大角度为13度。当两个弯曲块10的中心轴A-A与中心轴B-B之间的夹角为13度的时候，环形臂15的自由端也与环形槽16的末端也恰好相互抵持。Please refer to FIG. 10. Specifically, in this embodiment, the angle corresponding to the circular sliding path of the circular arm 15 along the circular groove 16 is equal to 13 degrees. The arc corresponding to each annular groove 16 is at least greater than 13 degrees. Then, the maximum angle of relative rotation between the protrusion 13 and the groove 12 is 13 degrees. When the angle between the central axis A-A and the central axis B-B of the two bending blocks 10 is 13 degrees, the free end of the ring arm 15 also exactly opposes the end of the ring groove 16.
请参见图11，在另一实施方式中，限位结构110还可以包括设于凹槽12两侧的锁止部122。凸起13的两侧设有与锁止部122配合的滑槽131。凹槽12的两侧设有锁止部122。 锁止部122沿滑槽131可滑动，滑槽131的开口端设有限位部132，锁止部122能够与限位部132相卡止，以使锁止部122限位于滑槽131内。Referring to FIG. 11, in another embodiment, the limiting structure 110 may further include locking portions 122 provided on both sides of the groove 12. The two sides of the protrusion 13 are provided with sliding grooves 131 that cooperate with the locking portion 122. Locking portions 122 are provided on both sides of the groove 12. The locking portion 122 is slidable along the sliding groove 131. The opening end of the sliding groove 131 is provided with a limiting portion 132. The locking portion 122 can be locked with the limiting portion 132 so that the locking portion 122 is limited to the sliding groove 131.
具体地，凹槽12的两侧设有锁止部122。凹槽12的外侧设有两个环形臂121，两环形臂121围成凹槽12。两环形臂121中间形成圆形的凹槽12。两个环形臂121由弯曲块10的端面向外延伸至凹槽12的开口处。环形臂121靠近开口处的一端为环形臂121的自由端。锁止部122设于环形臂121的自由端。两个环形臂121左右对称分布。Specifically, locking portions 122 are provided on both sides of the groove 12. Two annular arms 121 are provided on the outside of the groove 12, and the two annular arms 121 enclose the groove 12. A circular groove 12 is formed between the two ring arms 121. The two annular arms 121 extend outward from the end surface of the bending block 10 to the opening of the groove 12. The end of the ring arm 121 near the opening is the free end of the ring arm 121. The locking portion 122 is provided at the free end of the ring arm 121. The two ring arms 121 are symmetrically distributed.
两个环形臂121的末端分别对应一锁止部122。则两个环形臂121分别对应两个锁止部122。请参阅图5，为方便说明，锁止部122包括第一锁止部1221及第二锁止部1222。第一锁止部1221与第二锁止部1222沿滑槽131滑动。第一锁止部1221的一侧与凸起13相抵持，则第二锁止部1222与限位部132卡持连接。The ends of the two ring arms 121 respectively correspond to a locking portion 122. Then, the two ring arms 121 respectively correspond to the two locking parts 122. Please refer to FIG. 5. For convenience of description, the locking portion 122 includes a first locking portion 1221 and a second locking portion 1222. The first locking portion 1221 and the second locking portion 1222 slide along the sliding groove 131. When one side of the first locking portion 1221 abuts against the protrusion 13, the second locking portion 1222 is engaged with the limiting portion 132.
凸起13的两侧设有与两个锁止部122配合的滑槽131。滑槽131对称分布在凸起13的两侧。因此环形臂121及锁止部122均收容于滑槽131内。凸起13相对于凹槽12转动，则滑槽131相应于环形臂121的形状，也为圆弧形。The two sides of the protrusion 13 are provided with sliding grooves 131 that cooperate with the two locking portions 122. The slide grooves 131 are symmetrically distributed on both sides of the protrusion 13. Therefore, both the ring arm 121 and the locking portion 122 are accommodated in the sliding groove 131. When the protrusion 13 rotates relative to the groove 12, the sliding groove 131 corresponds to the shape of the ring arm 121 and is also circular arc-shaped.
锁止部122沿滑槽131可滑动，滑槽131的开口端设有限位部132。锁止部122能够与限位部132相卡止，以使锁止部122限位于滑槽131内。具体在本实施方式中，锁止部122为凸翅125。则限位部132也为凸出与滑槽131的卡翅。当凸起13相对于凹槽12转动的时候，则环形臂121也在滑槽131内滑动，当一侧的锁止部122与限位部132相互抵接卡持，从而使环形臂121停止在滑槽131内转动。The locking portion 122 is slidable along the sliding groove 131, and a limiting portion 132 is provided at the open end of the sliding groove 131. The locking portion 122 can be locked with the limiting portion 132 so that the locking portion 122 is limited within the sliding groove 131. Specifically, in this embodiment, the locking portion 122 is a fin 125. Then, the position-limiting portion 132 is also a locking fin protruding from the sliding groove 131. When the protrusion 13 rotates relative to the groove 12, the ring arm 121 also slides in the sliding groove 131, and when the locking portion 122 and the limit portion 132 on one side abut against each other, the ring arm 121 stops Rotate in the chute 131.
请参阅图11，限位部132的末端端面133为凹面，凹面以配合环形臂121在滑槽131内顺利滑动，保持限位部132的末端端面133与环形臂121的外侧表面光滑接触，保持顺利转动。Referring to FIG. 11, the end surface 133 of the limiting portion 132 is a concave surface. The concave surface cooperates with the ring arm 121 to smoothly slide in the sliding groove 131 to keep the end surface 133 of the limiting portion 132 in smooth contact with the outer surface of the ring arm 121 to maintain Turns smoothly.
环形臂121的锁止部122与滑槽131的限位部132相互卡合锁止以限位凸起13与凹槽12相对转动位置当在长度方向上拉伸力的过度作用的时候，锁止部122与限位部132相卡止限位，从而达到避免凸起13从凹槽12内脱落的问题。The locking portion 122 of the ring arm 121 and the limiting portion 132 of the sliding groove 131 are engaged with each other to lock the relative rotation position of the limiting protrusion 13 and the groove 12. When excessive tensile force in the longitudinal direction acts, the lock The stop portion 122 and the limit portion 132 are locked to limit the position, so as to avoid the problem of the protrusion 13 falling out of the groove 12.
具体在本实施方式中，锁止部122为凸翅125。则限位部132也为凸出与滑槽131的卡翅。当凸起13相对于凹槽12转动的时候，则环形臂121也在滑槽131内滑动。当一侧的锁止部122与限位部132相互抵接卡持，从而使环形臂121停止在滑槽131内转动。Specifically, in this embodiment, the locking portion 122 is a fin 125. Then, the position-limiting portion 132 is also a locking fin protruding from the sliding groove 131. When the protrusion 13 rotates relative to the groove 12, the ring arm 121 also slides in the sliding groove 131. When the locking portion 122 and the limiting portion 132 on one side abut against each other, the ring arm 121 stops rotating in the sliding groove 131.
请再次参阅图3，凸翅125为扇形。扇形形状的凸翅125可以增大锁止部122与滑槽131的内侧壁之间的接触面积，凸翅125与滑槽131之间的接触近似光滑接触，保证凸翅125能够在滑槽131内稳定的滑动。并且。扇形的凸翅125可以使凸翅125的外侧弧面的长度增大，避免凸翅125与滑槽131之间发生尖端抵触，保证凸翅125能够顺利的沿滑槽131滑动。Please refer to FIG. 3 again, the fin 125 is fan-shaped. The fan-shaped protruding fins 125 can increase the contact area between the locking portion 122 and the inner side wall of the sliding groove 131. The contact between the protruding fins 125 and the sliding groove 131 is approximately smooth to ensure that the protruding fins 125 can be in the sliding groove 131 Stable sliding inside. and. The fan-shaped protruding fin 125 can increase the length of the outer arc surface of the protruding fin 125 to avoid tip collision between the protruding fin 125 and the sliding groove 131, and ensure that the protruding fin 125 can smoothly slide along the sliding groove 131.
在其他实施方式中，锁止部122并不局限于凸翅125的形状，凸翅125也不限于为扇形形状。锁止部122还可以为其他变形结构，例如，锁止部122为回弯形状等。凸翅125还可以为矩形条状等。In other embodiments, the locking portion 122 is not limited to the shape of the fin 125, and the fin 125 is not limited to the shape of a fan. The locking portion 122 may also be other deformed structures, for example, the locking portion 122 is bent back. The protruding fin 125 may also be a rectangular strip or the like.
凸起13在凹槽12内相对转动到最大角度，相邻两弯曲块10的抵接面14相抵接，使两弯曲块10之间处于最大弯曲角度并进入锁止状态。当两个抵接面14相互抵持，凸起13在凹槽12内相对转动到最大角度的时候，两个相邻弯曲块10工作状态为锁止状态，位于锁止状态的两个弯曲块10不能发生相对转动。锁止部122与滑槽131也不能再发生相对转动。The protrusion 13 relatively rotates to the maximum angle in the groove 12, and the abutment surfaces 14 of the two adjacent bending blocks 10 abut, so that the two bending blocks 10 are at the maximum bending angle and enter the locked state. When the two abutment surfaces 14 abut against each other and the protrusion 13 relatively rotates to the maximum angle in the groove 12, the working state of the two adjacent bending blocks 10 is the locked state, and the two bending blocks in the locked state 10 No relative rotation can occur. The locking portion 122 and the sliding groove 131 can no longer rotate relatively.
锁止部122沿滑槽131的弧形滑动轨迹对应的角度大于等于凸起13与凹槽12相对转动的最大角度。锁止部122沿滑槽131滑动，滑槽131为弧形，则锁止部122在滑槽131内的运动轨迹为弧形。锁止部122沿滑槽131的弧形滑动轨迹对应的角度小于滑槽131的弧度对应的角度。并且，锁止部122沿滑槽131的弧形滑动轨迹对应的角度大于等于凸起13与凹槽12相对转动的最大角度。The angle corresponding to the arc sliding track of the locking portion 122 along the sliding groove 131 is greater than or equal to the maximum angle at which the protrusion 13 and the groove 12 rotate relative to each other. The locking portion 122 slides along the sliding groove 131, and the sliding groove 131 is arc-shaped, then the movement trajectory of the locking portion 122 in the sliding groove 131 is arc-shaped. The angle corresponding to the arc-shaped sliding locus of the locking portion 122 along the sliding groove 131 is smaller than the angle corresponding to the arc of the sliding groove 131. Moreover, the angle of the locking portion 122 along the arc-shaped sliding trajectory of the sliding groove 131 is greater than or equal to the maximum angle at which the protrusion 13 and the groove 12 rotate relative to each other.
滑槽131的弧度大小直接决定锁止部122在滑槽131内的弧形滑动轨迹对应的角度大小。滑槽131的弧度对应的角度大于凸起13与凹槽12相对转动的最大角度。由于锁止部122为凸翅125，凸翅125为扇形，凸翅125占用滑槽131的一定距离。因此锁止部122在滑槽131内的弧形滑动轨迹所对应的角度小于滑槽131的总体弧度大小。因此，通过设计增加滑槽131的长短，可以使锁止部122在滑槽131内转动弧度所对应的角度大于等于两弯曲块10之间的最大弯曲角度。The arc size of the sliding groove 131 directly determines the angle size corresponding to the arc-shaped sliding track of the locking portion 122 in the sliding groove 131. The angle corresponding to the arc of the sliding groove 131 is greater than the maximum angle at which the protrusion 13 and the groove 12 rotate relative to each other. Since the locking portion 122 is a fin 125 and the fin 125 is fan-shaped, the fin 125 occupies a certain distance of the sliding groove 131. Therefore, the angle corresponding to the arc-shaped sliding trajectory of the locking portion 122 in the sliding groove 131 is smaller than the overall arc size of the sliding groove 131. Therefore, by increasing the length of the sliding groove 131 by design, the angle corresponding to the arc of the locking portion 122 rotating in the sliding groove 131 can be greater than or equal to the maximum bending angle between the two bending blocks 10.
则可以避免锁止部122与限位部132的卡止限位，不会影响到两个弯曲块10的中心轴向之间的最大角度的设计需求，能够使弯曲块10的最大弯曲角度满足内窥镜的使用需求。Then, the locking limit of the locking portion 122 and the limiting portion 132 can be avoided, and the design requirement of the maximum angle between the central axes of the two bending blocks 10 will not be affected, and the maximum bending angle of the bending block 10 can be satisfied Need for use of endoscopes.
同时，当两弯曲块10的抵接面14相抵接的时候，两弯曲块10进入锁止状态，则锁止部122在滑槽131内不能再发生滑动。避免锁止部122过度转动，对限位部132过度挤压，抵接面14起到安全保护的作用，防止锁止部122与限位部132之间由于过度扭转而发生变形。在其他实施方式中，锁止部122的形状还可以为狭长形条状，则锁止部122占用的滑槽131的距离较小。锁止部122沿滑槽131的弧形滑动轨迹对应的角度大小与滑槽131的弧度对应的角度大小近似相等。At the same time, when the abutting surfaces 14 of the two bending pieces 10 abut, the two bending pieces 10 enter the locked state, and the locking portion 122 can no longer slide in the sliding groove 131. To avoid excessive rotation of the locking portion 122 and excessive squeezing of the limiting portion 132, the abutment surface 14 serves as a safety protection to prevent deformation between the locking portion 122 and the limiting portion 132 due to excessive torsion. In other embodiments, the shape of the locking portion 122 may also be an elongated bar shape, so the distance of the sliding groove 131 occupied by the locking portion 122 is small. The angular size of the locking portion 122 along the arc-shaped sliding trajectory of the sliding groove 131 is approximately equal to the angular size of the arc of the sliding groove 131.
具体在本实施方式中，锁止部122沿滑槽131的弧形滑动轨迹对应的角度等于凸起13与凹槽12相对转动的最大角度。当凸起13与凹槽12相对转动到最大角度的时候，则锁止部122也与滑槽的限位部132相互抵持。因此，对于两个弯曲块10的转动位置即可以通过两个抵接面14相互抵持进行限位，也可以通过两个锁止部122与限位部132相互配合进行限位。Specifically in this embodiment, the angle of the locking portion 122 along the arc-shaped sliding trajectory of the sliding groove 131 is equal to the maximum angle of relative rotation of the protrusion 13 and the groove 12. When the protrusion 13 and the groove 12 relatively rotate to the maximum angle, the locking portion 122 also resists the limiting portion 132 of the sliding groove. Therefore, the rotation positions of the two bending pieces 10 can be limited by the two abutting surfaces 14 against each other, or can be limited by the two locking portions 122 and the limiting portion 132 cooperating with each other.
具体在本实施方式中，锁止部122沿滑槽131的弧形滑动轨迹对应的角度等于13度。每个滑槽131对应的弧度大于13度。则凸起13与凹槽12相对转动的最大角度为13度。当两个弯曲块10的中心轴的夹角为13度的时候，锁止部122也与滑槽的限位部132也恰好相互抵持。Specifically in this embodiment, the angle corresponding to the arc-shaped sliding trajectory of the locking portion 122 along the sliding groove 131 is equal to 13 degrees. The arc corresponding to each chute 131 is greater than 13 degrees. Then, the maximum angle of relative rotation between the protrusion 13 and the groove 12 is 13 degrees. When the angle between the central axes of the two bending blocks 10 is 13 degrees, the locking portion 122 and the limiting portion 132 of the slide groove also exactly oppose each other.
具体在本实施方式中，内窥镜的弯曲部由激光切割技术制作而成。因此，为保证弯曲块之间的转动的光滑度及各个接触部件之间的光滑性，在激光切割后用抛光方式对焊渣(熔渣)去除，来保证两节弯曲块之间运动时候无阻碍。Specifically in this embodiment, the curved portion of the endoscope is made by laser cutting technology. Therefore, in order to ensure the smoothness of the rotation between the bending pieces and the smoothness between the contact parts, the welding slag (slag) is removed by polishing after laser cutting to ensure that there is no movement between the two bending pieces Hinder.
并且，为保证凸起13在凹槽12内顺利滑动，及锁止部122在滑槽131内顺利滑动，则使凸起13与凹槽12的接触面为光滑面，锁止部122与滑槽131的接触面为光滑过渡面，以使两接触面发生相对顺畅的转动。In addition, in order to ensure that the protrusion 13 slides smoothly in the groove 12 and the locking portion 122 slides smoothly in the sliding groove 131, the contact surface between the protrusion 13 and the groove 12 is a smooth surface, and the locking portion 122 and the sliding surface The contact surface of the groove 131 is a smooth transition surface, so that the two contact surfaces rotate relatively smoothly.
请参见图12，内窥镜还包括胶管23。胶管23直接套设于弯曲部21的外侧。内窥镜20不需要设置钢网。弯曲部21与胶管23之间存在空隙。弯曲部21支撑胶管23。胶管23具有一定的柔性，胶管23可以随弯曲部21弯曲。Referring to FIG. 12, the endoscope further includes a hose 23. The rubber tube 23 is directly sleeved on the outer side of the bent portion 21. The endoscope 20 does not require a steel mesh. There is a gap between the bent portion 21 and the hose 23. The bent portion 21 supports the hose 23. The hose 23 has a certain flexibility, and the hose 23 can be bent with the bending portion 21.
弯曲部21包括多个首尾连接的弯曲块10。弯曲部21两端的外侧壁分别与胶管23两端的外侧壁直接密封连接。The bending portion 21 includes a plurality of bending pieces 10 connected end to end. The outer side walls at both ends of the bent portion 21 are directly and sealingly connected to the outer side walls at both ends of the hose 23, respectively.
胶管23与弯曲部21的两端通过密封胶层(图未示)粘接。密封胶层直接设置于胶管23的内侧壁与弯曲部21的外侧壁之间。密封胶层可以保证胶管23与弯曲部21之间的密封性。The rubber tube 23 is bonded to both ends of the bent portion 21 through a sealant layer (not shown). The sealant layer is directly disposed between the inner wall of the rubber tube 23 and the outer wall of the bent portion 21. The sealant layer can ensure the tightness between the rubber tube 23 and the bent portion 21.
胶管23可以为氟橡胶管。氟橡胶管的强度及柔性可以满足使用要求。The rubber tube 23 may be a fluoroelastomer tube. The strength and flexibility of the fluoroelastomer tube can meet the requirements of use.
胶管23直接套设在弯曲部21的外侧，在满负载，全角度弯曲180度的情况下，氟橡胶管可以承受150次弯曲不破裂。在常规内窥镜检查，一般为30分钟，含病人进入检查间到出来的全部时间，假设医生检查全程都使用全角度观察，每分钟5次，这个速度已经是医生操作中比较快的频率了，30分钟最多150次弯曲，况且我们实验的是单方向150次，实际使用中是四个方向，每个方向都有可能弯曲。因此，本实施方式的内窥镜涵盖了实际操作可能出现的频率次数，不设置钢网层，胶管23也不会被咬破。The rubber tube 23 is directly sleeved on the outer side of the bending portion 21, and the fluoroelastomer tube can withstand 150 bendings without breaking under the condition of full load and 180-degree bending at full angle. In conventional endoscopy, it is generally 30 minutes, including the entire time the patient enters the examination room and comes out. Assuming that the doctor uses the full-angle observation during the entire examination, 5 times per minute, this speed is already a relatively fast frequency in the operation of the doctor , Up to 150 bends in 30 minutes, and our experiment is 150 times in one direction, in actual use is four directions, each direction may be bent. Therefore, the endoscope of the present embodiment covers the number of possible frequency of actual operation. Without the steel mesh layer, the hose 23 will not be bitten.
胶管23的内径大于弯曲部21的外径，且胶管23与弯曲部21之间存在间隙。间隙可以使弯曲部21能够自由弯曲，避免胶管23对弯曲部21产生束缚作用力。The inner diameter of the hose 23 is larger than the outer diameter of the bent portion 21, and there is a gap between the hose 23 and the bent portion 21. The gap enables the bending portion 21 to bend freely, and prevents the hose 23 from generating a binding force on the bending portion 21.
并且，胶管23的内侧壁设有耐磨层(图未示)。耐磨层可以避免弯曲部21在胶管23内部弯曲的时候与胶管23的内侧壁之间发生多次摩擦，使胶管23磨损，影响胶管23的使用寿命。Moreover, the inner wall of the hose 23 is provided with a wear-resistant layer (not shown). The wear-resistant layer can avoid multiple friction between the bending portion 21 and the inner side wall of the hose 23 when the hose 23 is bent inside, which causes the hose 23 to wear and affect the service life of the hose 23.
耐磨层可以为涂层。涂层可以避免影响胶管23的柔性和韧性，保证胶管23能够随弯曲部21自由弯曲，满足内窥镜的正常使用要求。The wear layer can be a coating. The coating can avoid affecting the flexibility and toughness of the hose 23, ensure that the hose 23 can bend freely with the bending portion 21, and meet the normal use requirements of the endoscope.
本实施方式的内窥镜相对于传统的内窥镜，不设置钢网，也可以满足内窥镜的使用需求。并且，本实施方式的内窥镜能够从根本上解决钢网的断头扎破胶管23的问题，保证内窥镜能够安全使用。不设置钢网，不仅可以简化内窥镜的结构，又可以节省安装设置钢网的操作工序，节约成本。Compared with the conventional endoscope, the endoscope of this embodiment does not have a steel mesh, and can also meet the use requirements of the endoscope. In addition, the endoscope of the present embodiment can fundamentally solve the problem of puncturing the rubber tube 23 with a broken head of the steel mesh, ensuring that the endoscope can be safely used. The absence of a steel mesh not only simplifies the structure of the endoscope, but also saves the operation procedure of installing and setting the steel mesh and saves costs.
本实施方式的内窥镜及内窥镜的弯曲部相对于传统的内窥镜至少具有以下优点：The endoscope and the curved portion of the endoscope of this embodiment have at least the following advantages over the conventional endoscope:
首先，内窥镜的弯曲部211不设有铆钉，相邻两个弯曲块10之间通过连接部11连接，制作过程简单，容易实现。First, the bending portion 211 of the endoscope is not provided with rivets, and the two adjacent bending blocks 10 are connected by the connecting portion 11. The manufacturing process is simple and easy to implement.
并且，连接部11通过设置限位结构，使凸起13稳定收容于凹槽12内。或者，连接部通过锁止部122与限位部132之间相互卡持，以使锁止部122限位于滑槽132内，避免凸起13从凹槽12内脱离。因此，即使内窥镜的弯曲部即使不使用铆钉，两个弯曲块10之间的连接强度也保持较强，不会影响内窥镜的正常使用。Moreover, the connection portion 11 is provided with a limiting structure so that the protrusion 13 is stably accommodated in the groove 12. Alternatively, the connecting portion is locked with each other by the locking portion 122 and the limiting portion 132, so that the locking portion 122 is limited to the sliding groove 132 to prevent the protrusion 13 from escaping from the groove 12. Therefore, even if rivets are not used in the bending portion of the endoscope, the connection strength between the two bending blocks 10 remains strong, and does not affect the normal use of the endoscope.
环形臂15与环形槽16相互接触作用，以分散两个弯曲块10之间的作用力，避免凸起13从凹槽12内脱离。The ring arm 15 and the ring groove 16 are in contact with each other to disperse the force between the two bending pieces 10 and prevent the protrusion 13 from falling out of the groove 12.
并且，环形臂15沿环形槽16内弧形滑动轨迹对应的角度大于等于凸起13与凹槽12相对转动的最大角度，保证两个弯曲块10能够按照设计需求进行转动。In addition, the angle corresponding to the circular sliding path of the circular arm 15 along the circular groove 16 is greater than or equal to the maximum angle of relative rotation of the protrusion 13 and the groove 12 to ensure that the two bending blocks 10 can rotate according to design requirements.
环形槽16关于凹槽12的中心呈中心对称分布，多级环形臂15关于凸起13的中心呈中心对称分布。则有凸起13与凹槽12之间的受力可以呈中心对称分散在环形臂15上，则该每个环形臂15受到的分力也呈中心对称分布，容易相互抵消，平衡受力，减小两个弯曲块10之间受力，保证连接的稳定性。The annular groove 16 is distributed symmetrically about the center of the groove 12, and the multi-stage annular arm 15 is distributed symmetrically about the center of the protrusion 13. Then, the force between the protrusion 13 and the groove 12 can be distributed on the ring arm 15 symmetrically in the center, then the component force received by each ring arm 15 is also distributed in the center symmetrically, which is easy to cancel each other, balance the force, reduce The force between the two small bending blocks 10 ensures the stability of the connection.
虽然已参照几个典型实施方式描述了本发明，但应当理解，所用的术语是说明和示例性、而非限制性的术语。由于本发明能够以多种形式具体实施而不脱离发明的精神或实质，所以应当理解，上述实施方式不限于任何前述的细节，而应在随附权利要求所限定的精神和范围内广泛地解释，因此落入权利要求或其等效范围内的全部变化和改型都应为随附权利要求所涵盖。Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is illustrative and exemplary rather than limiting. Since the present invention can be embodied in various forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be widely interpreted within the spirit and scope defined by the appended claims Therefore, all changes and modifications falling within the scope of the claims or their equivalents shall be covered by the appended claims.

Claims (22)

  1. 一种内窥镜的弯曲部，其特征在于，包括多个首尾连接的弯曲块，相邻两个弯曲块之间通过连接部可转动连接，所述弯曲块靠近一端端面处设有切割线，所述弯曲块的端面与所述切割线之间为冲压部，所述冲压部朝向所述弯曲块的内侧凹陷，形成用于穿设牵引线的导向部，所述切割线与所述弯曲块的另一端端面之间设有缓冲槽，所述缓冲槽用于缓冲冲压压力。A bending part of an endoscope is characterized in that it includes a plurality of bending blocks connected end to end, adjacent two bending blocks are rotatably connected by a connecting part, and the bending block is provided with a cutting line near one end end surface. Between the end surface of the bending block and the cutting line is a punching portion, the punching portion is recessed toward the inner side of the bending block to form a guide portion for threading the pulling line, the cutting line and the bending block There is a buffer groove between the other end of the end, the buffer groove is used to buffer the stamping pressure.
  2. 根据权利要求1所述的内窥镜的弯曲部，其特征在于，所述缓冲槽的长度大于所述切割线的长度。The curved portion of the endoscope according to claim 1, wherein the length of the buffer groove is greater than the length of the cutting line.
  3. 根据权利要求1所述的内窥镜的弯曲部，其特征在于，所述切割线与所述缓冲槽关于同一轴线对称分布。The curved portion of the endoscope according to claim 1, wherein the cutting line and the buffer groove are symmetrically distributed about the same axis.
  4. 根据权利要求1所述的内窥镜的弯曲部，其特征在于，所述切割线的长度至少为所述缓冲槽的长度的1/2。The curved portion of the endoscope according to claim 1, wherein the length of the cutting line is at least 1/2 of the length of the buffer groove.
  5. 根据权利要求1所述的内窥镜的弯曲部，其特征在于，相邻两所述弯曲块之间设有两个所述连接部，两所述连接部沿所述弯曲块的径向相对设置。The bending part of the endoscope according to claim 1, wherein two connecting parts are provided between two adjacent bending blocks, and the two connecting parts are opposed in the radial direction of the bending block Settings.
  6. 根据权利要求1所述的内窥镜的弯曲部，其特征在于，多个所述弯曲块的连接部位于两条平行线上。The curved portion of the endoscope according to claim 1, wherein the connecting portions of the plurality of curved blocks are located on two parallel lines.
  7. 根据权利要求1所述的内窥镜的弯曲部，其特征在于，多个所述弯曲块的连接部位于四条平行线上。The curved portion of the endoscope according to claim 1, wherein the connecting portions of the plurality of curved blocks are located on four parallel lines.
  8. 根据权利要求1所述的内窥镜的弯曲部，其特征在于，所述连接部包括凹槽及凸起，所述凸起可转动收容于所述凹槽内，所述弯曲块的端面于所述连接部的两侧分别设有抵接面，所述凸起在所述凹槽内相对转动到最大角度，相邻两所述弯曲块的抵接面相抵接，使两所述弯曲块之间处于最大弯曲角度并进入锁止状态。The bending part of the endoscope according to claim 1, wherein the connecting part comprises a groove and a protrusion, the protrusion is rotatably received in the groove, and the end surface of the bending block is Two sides of the connecting portion are respectively provided with abutment surfaces, the protrusions rotate relatively to the maximum angle in the groove, and the abutment surfaces of two adjacent bending blocks abut against each other, so that the two bending blocks Between the maximum bending angle and enter the locked state.
  9. 根据权利要求8所述的内窥镜的弯曲部，其特征在于，相邻两所述弯曲块的抵接面相抵接，所述连接部设有限位结构，所述限位结构使所述凸起稳定收容于所述凹槽内。The bending portion of the endoscope according to claim 8, wherein the contact surfaces of two adjacent bending pieces are in contact with each other, and the connecting portion is provided with a limiting structure, the limiting structure makes the convex It is stably contained in the groove.
  10. 根据权利要求9所述的内窥镜的弯曲部，其特征在于，所述限位结构包括设于所述凹槽两侧的锁止部，所述凸起的两侧设有与所述锁止部配合的滑槽，所述凹槽的两侧设有锁止部，所述锁止部沿所述滑槽可滑动，所述滑槽的开口端设有限位部，所述锁止部能够与所述限位部相卡止，以使所述锁止部限位于所述滑槽内。The curved portion of the endoscope according to claim 9, wherein the limiting structure includes locking portions provided on both sides of the groove, and the locks are provided on both sides of the protrusion A sliding groove with a stopper is provided with locking parts on both sides of the groove, the locking part is slidable along the sliding groove, a limit part is provided at the open end of the sliding groove, and the locking part It can be locked with the limiting part, so that the locking part is limited to the sliding groove.
  11. 根据权利要求10所述的内窥镜的弯曲部，其特征在于，所述锁止部包括第一锁止部及第二锁止部，所述第一锁止部与所述第二锁止部沿所述滑槽滑动，所述第一锁止部的一侧与所述凸起相抵持，则所述第二锁止部与所述限位部卡持连接。The curved portion of an endoscope according to claim 10, wherein the locking portion includes a first locking portion and a second locking portion, the first locking portion and the second locking portion Part slides along the sliding groove, one side of the first locking part abuts against the protrusion, then the second locking part is clamped and connected with the limiting part.
  12. 根据权利要求10所述的内窥镜的弯曲部，其特征在于，所述锁止部沿所述滑槽的弧形滑动轨迹对应的角度等于13度，每个所述滑槽对应的弧度大于13度。The curved portion of the endoscope according to claim 10, wherein the angle corresponding to the arc-shaped sliding trajectory of the locking portion is equal to 13 degrees, and the arc corresponding to each of the sliding grooves is greater than 13 degrees.
  13. 根据权利要求10所述的内窥镜的弯曲部，其特征在于，所述锁止部为凸翅，所述凸翅为扇形。The curved portion of the endoscope according to claim 10, wherein the locking portion is a convex fin, and the convex fin is fan-shaped.
  14. 根据权利要求9所述的内窥镜的弯曲部，其特征在于，所述限位结构包括设于所述凸起的两侧的环形臂及设于所述凹槽的两侧的环形槽，所述环形臂对应收容于所述环形槽内，所述环形臂可转动收容于所述环形槽内，所述环形臂沿所述环形槽弧形滑动轨迹对应的角度大于等于所述凸起与所述凹槽相对转动的最大角度。The curved portion of the endoscope according to claim 9, wherein the limiting structure includes annular arms provided on both sides of the protrusion and annular grooves provided on both sides of the groove, The ring arm is correspondingly received in the ring groove, the ring arm is rotatably received in the ring groove, and the angle corresponding to the arc sliding track of the ring arm is greater than or equal to the protrusion and The maximum angle of relative rotation of the groove.
  15. 根据权利要求14所述的内窥镜的弯曲部，其特征在于，所述环形臂为多个，所述环形槽为多个。The curved portion of the endoscope according to claim 14, wherein there are a plurality of ring arms and a plurality of ring grooves.
  16. 根据权利要求15所述的内窥镜的弯曲部，其特征在于，多个所述环形臂与多个所述环形槽所对应的圆心角相同。The curved part of the endoscope according to claim 15, wherein the plurality of ring arms and the plurality of ring grooves have the same center angle.
  17. 根据权利要求14所述的内窥镜的弯曲部，其特征在于，所述环形槽对称设于所述凹槽的两侧，所述环形臂对称设于所述凸起的两侧。The curved portion of the endoscope according to claim 14, wherein the annular groove is symmetrically provided on both sides of the groove, and the annular arm is symmetrically provided on both sides of the protrusion.
  18. 根据权利要求14所述的内窥镜的弯曲部，其特征在于，所述凹槽两侧的所述环形槽非对称设于所述凹槽的两侧，所述凸起两侧的环形臂非对称设于所述凸起的两侧。The curved portion of the endoscope according to claim 14, wherein the annular grooves on both sides of the groove are provided asymmetrically on both sides of the groove, and the annular arms on both sides of the protrusion Asymmetrically set on both sides of the protrusion.
  19. 根据权利要求10所述的内窥镜的弯曲部，其特征在于，所述凸起与所述凹槽的接触面为光滑面，所述锁止部与所述滑槽的接触面为光滑过渡面。The curved portion of the endoscope according to claim 10, wherein the contact surface between the protrusion and the groove is a smooth surface, and the contact surface between the locking portion and the slide groove is a smooth transition surface.
  20. 根据权利要求1-19任一所述的内窥镜的弯曲部，其特征在于，所述内窥镜的弯曲部由激光切割技术制作而成。The curved portion of an endoscope according to any one of claims 1-19, wherein the curved portion of the endoscope is made by laser cutting technology.
  21. 一种内窥镜，其特征在于，包括权利要求1-20任一所述的弯曲部及设于所述弯曲部内的牵引线，所述牵引线串联连接多个所述弯曲块。An endoscope, characterized by comprising the bending part according to any one of claims 1-20 and a traction wire provided in the bending part, the traction wire connecting a plurality of the bending blocks in series.
  22. 根据权利要求21所述的内窥镜，其特征在于，所述内窥镜包括胶管，所述胶管直接套设于所述弯曲部的外侧，所述弯曲部包括多个首尾连接的弯曲块，所述弯曲部支撑所述胶管，所述弯曲部两端的外侧壁分别与所述胶管两端的外侧壁直接密封连接。The endoscope according to claim 21, wherein the endoscope includes a rubber tube, and the rubber tube is directly sleeved on the outer side of the bending part, and the bending part includes a plurality of bending blocks connected end to end. The bent portion supports the hose, and the outer sidewalls at both ends of the bent portion are directly and sealingly connected to the outer sidewalls at both ends of the hose respectively.
PCT/CN2019/127629 2018-12-25 2019-12-23 Bending part of endoscope, and endoscope WO2020135362A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023077913A1 (en) * 2021-11-05 2023-05-11 浙江华诺康科技有限公司 Snake bone unit, snake bone tube, insertion catheter, and electronic endoscope
CN117754315A (en) * 2024-02-22 2024-03-26 苏州聚生精密冲件有限公司 Snake bone segment forming system, control method, snake bone segment and snake bone

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110034772A1 (en) * 2009-08-10 2011-02-10 Gyrus Acmi, Inc. Endoscope riveted deflection section frame
WO2017142778A1 (en) * 2016-02-15 2017-08-24 St. Jude Medical, Cardiology Division, Inc. Deflectable catheter shaft
CN107811600A (en) * 2017-10-20 2018-03-20 上海安清医疗器械有限公司 The soft or hard swan-neck of multisection type gradual change, endoscope-use insertion tube and endoscope using the swan-neck
CN108078535A (en) * 2018-01-04 2018-05-29 郑州润德光电科技有限公司 Bicyclic armful of rotational structure, bicyclic holding tube body rotational structure, integral type tube body rotational structure, medical endoscope snake bone and endoscope
CN108113628A (en) * 2018-01-09 2018-06-05 浙江成运医疗器械有限公司 Without rivet snake bone component
CN207745110U (en) * 2017-06-29 2018-08-21 杭州无创光电有限公司 A kind of endoscope snake bone structure and endoscope
CN207821892U (en) * 2017-06-06 2018-09-07 山东威高骨科材料股份有限公司 One kind can wide-angle lateral-deviation type Universal screw nail
CN109497915A (en) * 2018-12-25 2019-03-22 深圳市先赞科技有限公司 Curvature section of endoscope and endoscope
CN109512369A (en) * 2018-12-25 2019-03-26 深圳市先赞科技有限公司 Curvature section of endoscope and endoscope
CN109528149A (en) * 2018-12-25 2019-03-29 深圳市先赞科技有限公司 Endoscope
CN109645937A (en) * 2018-12-25 2019-04-19 深圳市先赞科技有限公司 Curvature section of endoscope and endoscope
CN209750985U (en) * 2018-12-25 2019-12-10 深圳市先赞科技有限公司 Endoscope with a detachable handle
CN209770314U (en) * 2018-12-25 2019-12-13 深圳市先赞科技有限公司 Bending section of endoscope and endoscope
CN209770313U (en) * 2018-12-25 2019-12-13 深圳市先赞科技有限公司 Bending section of endoscope and endoscope

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110034772A1 (en) * 2009-08-10 2011-02-10 Gyrus Acmi, Inc. Endoscope riveted deflection section frame
WO2017142778A1 (en) * 2016-02-15 2017-08-24 St. Jude Medical, Cardiology Division, Inc. Deflectable catheter shaft
CN207821892U (en) * 2017-06-06 2018-09-07 山东威高骨科材料股份有限公司 One kind can wide-angle lateral-deviation type Universal screw nail
CN207745110U (en) * 2017-06-29 2018-08-21 杭州无创光电有限公司 A kind of endoscope snake bone structure and endoscope
CN107811600A (en) * 2017-10-20 2018-03-20 上海安清医疗器械有限公司 The soft or hard swan-neck of multisection type gradual change, endoscope-use insertion tube and endoscope using the swan-neck
CN108078535A (en) * 2018-01-04 2018-05-29 郑州润德光电科技有限公司 Bicyclic armful of rotational structure, bicyclic holding tube body rotational structure, integral type tube body rotational structure, medical endoscope snake bone and endoscope
CN108113628A (en) * 2018-01-09 2018-06-05 浙江成运医疗器械有限公司 Without rivet snake bone component
CN109497915A (en) * 2018-12-25 2019-03-22 深圳市先赞科技有限公司 Curvature section of endoscope and endoscope
CN109512369A (en) * 2018-12-25 2019-03-26 深圳市先赞科技有限公司 Curvature section of endoscope and endoscope
CN109528149A (en) * 2018-12-25 2019-03-29 深圳市先赞科技有限公司 Endoscope
CN109645937A (en) * 2018-12-25 2019-04-19 深圳市先赞科技有限公司 Curvature section of endoscope and endoscope
CN209750985U (en) * 2018-12-25 2019-12-10 深圳市先赞科技有限公司 Endoscope with a detachable handle
CN209770314U (en) * 2018-12-25 2019-12-13 深圳市先赞科技有限公司 Bending section of endoscope and endoscope
CN209770313U (en) * 2018-12-25 2019-12-13 深圳市先赞科技有限公司 Bending section of endoscope and endoscope

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023077913A1 (en) * 2021-11-05 2023-05-11 浙江华诺康科技有限公司 Snake bone unit, snake bone tube, insertion catheter, and electronic endoscope
CN117754315A (en) * 2024-02-22 2024-03-26 苏州聚生精密冲件有限公司 Snake bone segment forming system, control method, snake bone segment and snake bone
CN117754315B (en) * 2024-02-22 2024-05-03 苏州聚生精密冲件有限公司 Snake bone segment forming system, control method, snake bone segment and snake bone

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