CN215777931U - Snake bone unit, snake bone assembly, insertion part and endoscope - Google Patents
Snake bone unit, snake bone assembly, insertion part and endoscope Download PDFInfo
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- CN215777931U CN215777931U CN202122304718.8U CN202122304718U CN215777931U CN 215777931 U CN215777931 U CN 215777931U CN 202122304718 U CN202122304718 U CN 202122304718U CN 215777931 U CN215777931 U CN 215777931U
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Abstract
The utility model is suitable for the technical field of endoscopes and provides a snake bone unit, a snake bone assembly, an insertion part and an endoscope; be equipped with apparatus tube passageway, signal line passageway and haulage rope passageway on the snake bone unit, the haulage rope passageway is located the first radial direction's of snake bone unit both ends, the apparatus tube passageway, the signal line passageway with the haulage rope passageway all runs through the snake bone unit. The snake bone units are not provided with the protruding structures for connecting with other snake bone units, namely the connection between the two snake bone units is realized by integrally connecting the opposite end surfaces of the two snake bone units by adopting the flexible body connecting body instead of riveting and other modes in the prior art, riveting is not needed, the connection is more reliable, and the problem of radial falling does not exist.
Description
Technical Field
The present invention relates to an endoscope, and more particularly to a snake bone unit, a snake bone assembly, an insertion portion, and an endoscope.
Background
The endoscope is a common endoscope, enters the human body through a natural pore canal of the human body or a small incision made by operation, and is guided into a pre-examined organ when in use, so that the change of the related part can be directly observed. A snake bone section is arranged in the insertion part of the endoscope, and the snake bone section is formed by connecting snake bone units end to end; the snake bone unit is usually a tubular body, and the inner cavity of the snake bone unit is usually used for accommodating components such as instrument pipes, signal wires, steel wire ropes and the like; the bending direction of the snake bone section is changed through the traction of the steel wire rope, and then the bending of the insertion part is realized.
In the prior art, a plurality of snake bone units are sequentially connected in a riveting mode in some snake bones, and are directly formed in an integrally forming mode by cutting in some snake bones; however, the diameter of the snake bone is usually only a few millimeters, so that the snake bone has complex manufacturing process, high processing difficulty and high production cost.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, it is an object of a first aspect of the present invention to provide a snake bone unit, wherein an instrument tube passage, a signal wire passage and a traction rope passage are provided on the snake bone unit, the traction rope passage is provided at both ends of the snake bone unit in a first radial direction, and the instrument tube passage, the signal wire passage and the traction rope passage all penetrate through the snake bone unit.
Furthermore, no convex structure used for being connected with other snake bone units is arranged on the snake bone unit.
In a second aspect of the utility model, a snake bone component is provided, which comprises a flexible connector and a plurality of snake bone units, wherein the flexible connector and the snake bone units are arranged at intervals, and two adjacent snake bone units are connected through the flexible connector.
Furthermore, the head end of the flexible connecting body is fixedly connected with the tail end of the adjacent front snake bone unit, and the tail end of the flexible connecting body is fixedly connected with the head end of the adjacent rear snake bone unit.
Furthermore, the outer diameter of the flexible connecting body is equal to the outer diameter of the snake bone unit in size, and the flexible connecting body is made of plastic materials.
Further, the length of the body of each end of the snake bone unit along a first radial direction is recorded as S1, the length of the body of each end of the snake bone unit along a second radial direction is recorded as S2, and the second radial direction intersects with the first radial direction; wherein S1 and S2 satisfy the following relationship: s1< S2.
Further, the body lengths of the two ends of the flexible connector along the first radial direction are L1, and the body lengths of the two ends of the flexible connector along the second radial direction are L2, where L1 and L2 satisfy the following relationships: l1+ S2 ═ L2+ S2.
In a third aspect of the utility model, an insertion part is provided, the insertion part is used for an endoscope, the insertion part comprises an instrument tube, a signal wire, a traction rope and the snake bone assembly, and the instrument tube, the traction rope and the signal wire are respectively accommodated in an instrument channel, a signal wire channel and a traction rope channel of the snake bone assembly.
In a fourth aspect of the present invention, there is provided an endoscope comprising a handle portion which effects bending of the snake bone assembly by controlling the pull cord, and the insertion portion described above.
The method for connecting the snake bone units comprises the following steps:
arranging the snake bone units at intervals according to a preset distance;
sequentially passing a first mandrel through an instrument tube channel on the snake bone unit, sequentially passing a second mandrel through a signal wire channel on the snake bone unit, and sequentially passing a third mandrel through a traction rope channel on the snake bone unit;
buckling a mold in the radial direction of the snake bone unit;
injecting soft glue into the mould;
and after the software is solidified, taking down the die, the first core rod, the second core rod and the third core rod to realize the connection among the snake bone units.
Compared with the prior art, the utility model has the beneficial technical effects that:
1) the snake bone unit is not provided with a tubular thin-wall body, is a solid snake bone sheet, and is provided with an instrument tube channel, a signal wire channel and a traction rope channel which penetrate through the snake bone unit body along the axial direction of the snake bone unit. The snake bone piece can be directly drilled with an instrument pipe channel, a signal wire channel and a traction rope channel, and a snake bone unit with the instrument pipe channel, the signal wire channel and the traction rope channel can be directly formed in a model pouring mode. The snake bone unit processing technology is simpler, the processed snake bone units are better in shape consistency, and each snake bone unit is provided with the special instrument pipe channel, the signal wire channel and the traction rope channel, so that the positions of the instrument pipe, the signal wire, the traction rope and other components in the snake bone units can be better kept, and the mutual interference situation is avoided.
2) The snake bone units are not provided with the protruding structures for connecting with other snake bone units, namely the connection between the two snake bone units is realized by integrally connecting the opposite end surfaces of the two snake bone units by adopting the flexible body connecting body instead of riveting and other modes in the prior art, riveting is not needed, the connection is more reliable, and the problem of radial falling does not exist.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention or in the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a snake bone unit according to an embodiment of the present invention;
FIG. 2 is a schematic view of a snake bone single component in another embodiment of the present invention
FIG. 3 is a schematic view of the overall structure and an axial sectional view of a snake bone assembly in accordance with an embodiment of the present invention;
FIG. 4 is a schematic view of a portion of a snake bone assembly in accordance with another embodiment of the utility model;
FIG. 5 is a schematic view of an endoscope in accordance with an embodiment of the present invention;
FIG. 6 is a schematic view showing a method for connecting the snake bone units according to an embodiment of the present invention.
In the figure: 1-a snake bone unit, 11-an instrument tube channel, 12-a signal wire channel, 13-a traction rope channel, 2-a snake bone component, 21-a flexible connector, 3-an endoscope, 31-a handle part, 32-an insertion part, 4-a first mandrel, 5-a second mandrel, 6-a third mandrel, 7-an upper die and 8-a lower die.
Detailed Description
The following description provides many different embodiments, or examples, for implementing different features of the utility model. The particular examples set forth below are illustrative only and are not intended to be limiting.
In the prior art, a conventional endoscope includes an operation portion (also referred to as a handle) and an insertion portion. The snake bone is arranged in the insertion part and consists of snake bone units which are sequentially connected end to end. Snake bone units typically have a tubular thin-walled body defining an integral lumen that is commonly used to house instrument tubes, signal wires, cables, and the like. Two (or four) traction holes for the traction ropes to pass through are usually arranged on each snake bone unit, one end of each of the two (or four) traction ropes is connected with the wheel arranged on the handle part, the other end of each of the two (or four) traction ropes sequentially passes through the traction holes on the corresponding side of the snake bone unit, one traction rope can be tightened, the other traction rope is loosened through the rotation of the handle part rotating wheel, and therefore the snake bone section of the endoscope rotates towards one side where the traction ropes are tightened; changing the rotation direction of the runner can make the snake bone segments rotate towards the opposite direction.
However, in the prior art, as for the connection method of the snake bone units in the snake bone, a plurality of snake bone units are connected in sequence by riveting, and the snake bone units are directly formed by cutting and integrally forming; however, the diameter of the snake bone is usually only a few millimeters, so that the snake bone has complex manufacturing process, high processing difficulty and high production cost.
In view of this, as shown in fig. 1, one embodiment of the present invention provides a snake bone unit 1, wherein the snake bone unit 1 is provided with an instrument tube passage 11, a signal wire passage 12 and a pull rope passage 13, the pull rope passage 13 is located at both ends of the snake bone unit 1 in a first radial direction, and the instrument tube passage 11, the signal wire passage 12 and the pull rope passage 13 all penetrate through the snake bone unit 1.
In the prior art, the snake bone unit 1 is usually processed into a strip-shaped sheet, traction holes are further processed on the body of the sheet, and then two ends of the sheet are connected in a surrounding manner to form a tubular snake bone unit 1.
The utility model is different from the prior art in that the snake bone unit 1 in the scheme does not have a tubular thin-wall body, the snake bone unit 1 is a solid snake bone piece, and an instrument tube channel 11, a signal wire channel 12 and a traction rope channel 13 which run through the body of the snake bone unit 1 are arranged on the snake bone unit 1 along the axial direction of the snake bone unit 1. Wherein, the instrument tube channel 11, the signal wire channel 12 and the traction rope channel 13 can be directly drilled and processed on the snake bone sheet, and the snake bone unit 1 with the instrument tube channel 11, the signal wire channel 12 and the traction rope channel 13 can be directly formed by adopting a model pouring mode.
Compared with the prior art, the processing technology of the snake bone unit 1 in the scheme is simpler, the consistency of the shapes of the processed snake bone units 1 is better, and the snake bone units 1 are provided with the special instrument tube channels 11, the signal wire channels 12 and the traction rope channels 13, so that the positions of the instrument tubes, the signal wires, the traction ropes and other components in the snake bone units 1 can be better kept, and the situation of mutual interference is avoided.
Further, no convex structure is arranged on the snake bone unit 1 for connecting with other snake bone units 1.
The two ends of the snake bone units 1 in the prior art are generally provided with lugs (or protrusions), the lugs of the two adjacent snake bone units 1 are riveted (or in other modes) to realize the connection of the two snake bone units 1, and the problems of insufficient connection strength, radial falling and the like exist in the connection mode.
Different from the prior art, the snake bone unit 1 in the above scheme is not provided with a convex structure for connecting with other snake bone units 1, that is, the connection between the two snake bone units 1 in the above scheme is not in riveting or other manners in the prior art, but a flexible body connector is used for integrally connecting the opposite end surfaces of the two snake bone units 1 (the detailed structure will be described in detail later), so that riveting is not needed, the connection is more reliable, and the problem of radial falling does not exist.
In one embodiment of the utility model, as shown in fig. 2, a snake bone component 2 is provided, wherein the snake bone component 2 comprises a flexible connecting body 21 and a plurality of snake bone units 1, the flexible connecting body 21 and the snake bone units 1 are arranged at intervals, and two adjacent snake bone units 1 are connected through the flexible connecting body 21.
The flexible connecting body 21 and the snake bone unit 1 are arranged at intervals, which means that: the snake bone units 1 and the flexible connecting bodies 21 are arranged in a staggered mode, and one flexible connecting body 21 is arranged between every two adjacent snake bone units 1.
As described above, in the prior art, the two snake bone units 1 are connected by riveting (or other means) the lugs of the two adjacent snake bone units 1, and for such a connection manner, the connection strength is often insufficient, and the two snake bone units fall off in the radial direction.
In the scheme, the traditional connection mode between the snake bone units 1 is changed, and the opposite end surfaces of the two snake bone units 1 are connected by adopting the flexible connecting body 21; it does not need the riveting, connects more reliably, does not have the problem that radially drops.
Further, the head end of the flexible connecting body 21 is fixedly connected with the tail end of the adjacent front snake bone unit 1, and the tail end of the flexible connecting body 21 is fixedly connected with the head end of the adjacent rear snake bone unit 1.
As for the connection manner between the flexible connection body 21 and the snake bone unit 1, the flexible connection body 21 can be detachably connected or fixedly connected with the snake bone unit 1. In the scheme, the two ends of the flexible connecting body 21 are fixedly connected with the corresponding end faces of the front snake bone unit 1 and the rear snake bone unit 1, so that the connection reliability between the snake bone units 1 is ensured.
In one embodiment of the present invention, the flexible connecting body 21 may be bonded to the corresponding end surface of the snake bone unit 1.
Further, as shown in fig. 3, the outer diameter of the flexible connecting body 21 is equal to the outer diameter of the snake bone unit 1, and the flexible connecting body 21 is made of plastic.
In the above solution, the flexible connecting body 21 may be configured to have the same shape as the snake bone unit 1, that is, the outer diameter of the flexible connecting body 21 is the same as the outer diameter of the snake bone unit 1, and the instrument tube channel 11, the signal line channel 12 and the traction rope channel 13 are also configured at the corresponding position of the flexible connecting body 21, except that the flexible connecting body 21 is bent when being subjected to a pressure (such as a pressure generated by tensioning the traction rope); and the snake bone unit 1 is a rigid body. Of course, the flexible connecting body 21 may be provided as a single annular body (not shown), and both end surfaces of the annular body may be connected to the end surfaces of the corresponding snake bone units 1.
Preferably, the flexible connection is made of a plastic material, such as soft glue, a plastic material with relatively low surface hardness. When the snake bone component 2 is bent, the soft rubber between the two snake bone units 1 can be bent.
Further, as shown in fig. 4 (b), the body lengths of both ends of the snake bone unit 1 in a first radial direction are denoted as S1, the body lengths of both ends of the snake bone unit 1 in a second radial direction are denoted as S2, and the second radial direction intersects with the first radial direction; wherein S1 and S2 satisfy the following relationship: s1< S2.
The first radial direction refers to the direction in which the two pull cord passages 13 are located (i.e., the horizontal direction in the drawing of fig. 1 (b)), and the second radial direction is the other direction of the snake bone unit 1 than the first radial direction. Here, for convenience of description, the second radial direction is set to be a radial direction in which the signal wire channel 12 and the instrument tube channel 11 are located (i.e., a vertical direction in fig. 1 (b)).
The body lengths at both ends of the first radial direction are denoted as S1, and the body lengths at both ends of the second radial direction are denoted as S2, where S1< S2. That is, for the snake bone unit 1 body, two end faces are not plane, but concave, wherein the lowest part of the concave is the first radial direction of the snake bone unit 1; the purpose of this arrangement is to increase the angle at which the adjacent two snake bone units 1 can bend relative to each other.
Further, as shown in fig. 4, the body length of both ends of the flexible connector 21 in the first radial direction is denoted as L1, and the body length of both ends of the flexible connector 21 in the second radial direction is denoted as L2, wherein L1 and L2 satisfy the following relationship: l1+ S2 ═ L2+ S2.
The first and second radial directions in the above-described aspect are the first and second radial directions using the aforementioned snake bone unit 1. I.e. the flexible connector 21 is arranged to have the longest length of the body at both ends in the first radial direction. Therefore, when the traction rope drives the snake bone units 1 to rotate, the angle range of relative bending of the two snake bone units 1 can be enlarged.
In one embodiment of the present invention, there is provided an insertion section 32, the insertion section 32 being used for an endoscope, the insertion section 32 including an instrument tube, a signal wire, a traction rope, the aforementioned snake assembly 2, which are respectively accommodated in an instrument tube passage 11, a signal wire passage 12 and a traction rope passage 13 on the snake assembly 2.
In order to realize the recycling of important parts of the endoscope, the conventional endoscope includes an insertion portion 32 and a handle portion 31, and there is a proposal in the prior art that the insertion portion 32 and the handle portion 31 of the endoscope are detachably provided. The handle portion 31 is a reusable portion, and the insertion portion 32 is disposable after a single use.
The present embodiment provides an insertion portion 32 for an endoscope, the insertion portion 32 being provided with the aforementioned snake bone assembly 22. The snake bone assembly 22 houses instrumentation tubing, signal wires, pull cords, etc. therein. Different from the connection of the snake bone units 1 in the prior art in a riveting mode and the like, the snake bone units 1 in the scheme are connected through the flexible connecting bodies 21 without riveting, the connection is more reliable, and the problem of radial falling does not exist.
In one embodiment of the present invention, as shown in fig. 5, there is provided an endoscope 3, the endoscope 3 including a handle portion 31 and the aforementioned insertion portion 32, the handle portion 31 effecting bending of the snake assembly 2 by controlling the traction rope.
As shown in fig. 6, the aforementioned method for connecting the snake bone unit 1 in one embodiment of the present invention comprises the following steps:
step S001: arranging the snake bone units 1 at intervals according to a preset distance; preferably, the predetermined distance is the length of the flexible connector 21.
Step S002: sequentially passing a first core rod 4 through an instrument tube channel 11 on the snake bone unit 1, sequentially passing a second core rod 5 through a signal wire channel 12 on the snake bone unit 1, and sequentially passing a third core rod 6 through a traction rope channel 13 on the snake bone unit 1; the purpose of inserting the core rod is to prevent the instrument tube channel 11, signal wire channel 12 and pull cord channel 13 from becoming blocked during glue filling;
step S003: buckling dies 7 and 8 in the radial direction of the snake bone unit 1;
step S004: injecting soft glue into the moulds 7 and 8;
step S005: and after the soft glue is solidified, taking down the dies 7 and 8, the first core rod 4, the second core rod and the third core rod 6 to realize the connection among the snake bone units 1.
The step S001 may be executed first and then the step S002 may be executed, or the step S002 may be executed first and then the step S001 may be executed. The snake bone component 2 formed by the method has the advantages that the bending function is not influenced, the production process is simple, riveting is not needed, and the problem of radial falling is avoided.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The utility model provides a snake bone unit (1), characterized in that, be equipped with apparatus pipe passageway (11), signal line passageway (12) and haulage rope passageway (13) on snake bone unit (1), haulage rope passageway (13) are located the first radial direction's of snake bone unit both ends, apparatus pipe passageway (11), signal line passageway (12) and haulage rope passageway (13) all run through snake bone unit (1).
2. A snake bone unit (1) according to claim 1, wherein no protruding structures are provided on the snake bone unit (1) for connection with other snake bone units (1).
3. A snake bone component (2) characterized by comprising a flexible connecting body (21), a plurality of snake bone units (1) as claimed in any one of claims 1-2, wherein the flexible connecting body (21) and the snake bone units (1) are arranged at intervals, and two adjacent snake bone units (1) are connected through the flexible connecting body (21).
4. A snake bone component (2) according to claim 3, wherein the head end of the flexible connecting body (21) is fixedly connected with the tail end of the adjacent front snake bone unit (1), and the tail end of the flexible connecting body (21) is fixedly connected with the head end of the adjacent rear snake bone unit (1).
5. A snake bone component (2) according to claim 4, wherein the flexible connecting body (21) has an outer diameter equal to the outer diameter of the snake bone unit (1), and the flexible connecting body (21) is made of plastic.
6. A snake bone component (2) according to claim 4, wherein the snake bone element (1) has a body length at both ends in a first radial direction as S1, and the snake bone element (1) has a body length at both ends in a second radial direction as S2, the second radial direction intersecting the first radial direction; wherein S1 and S2 satisfy the following relationship: s1< S2.
7. A snake bone assembly (2) according to claim 6, wherein the body length of both ends of the flexible connector (21) in the first radial direction is L1, and the body length of both ends of the flexible connector (21) in the second radial direction is L2, wherein L1 and L2 satisfy the following relations: l1+ S1 ═ L2+ S2.
8. An insertion part (32), characterized in that the insertion part (32) is for an endoscope, the insertion part (32) comprising an instrument tube, a signal wire, a pull cord, a snake bone assembly (2) according to any of claims 3-7, which are received in an instrument tube channel (11), a signal wire channel (12) and a pull cord channel (13) on the snake bone assembly (2), respectively.
9. An endoscope (3), characterized in that it comprises a handle portion (31) and an insertion portion (32) according to claim 8, said handle portion (31) effecting the bending of said snake bone assembly (2) by controlling said traction cords.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122304718.8U CN215777931U (en) | 2021-09-23 | 2021-09-23 | Snake bone unit, snake bone assembly, insertion part and endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122304718.8U CN215777931U (en) | 2021-09-23 | 2021-09-23 | Snake bone unit, snake bone assembly, insertion part and endoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215777931U true CN215777931U (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122304718.8U Active CN215777931U (en) | 2021-09-23 | 2021-09-23 | Snake bone unit, snake bone assembly, insertion part and endoscope |
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| CN (1) | CN215777931U (en) |
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- 2021-09-23 CN CN202122304718.8U patent/CN215777931U/en active Active
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