WO2020125676A1 - 旋钮组件及圆管型吻合器 - Google Patents
旋钮组件及圆管型吻合器 Download PDFInfo
- Publication number
- WO2020125676A1 WO2020125676A1 PCT/CN2019/126297 CN2019126297W WO2020125676A1 WO 2020125676 A1 WO2020125676 A1 WO 2020125676A1 CN 2019126297 W CN2019126297 W CN 2019126297W WO 2020125676 A1 WO2020125676 A1 WO 2020125676A1
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- WIPO (PCT)
- Prior art keywords
- knob
- mating
- fitting
- assembly according
- boss
- Prior art date
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B17/115—Staplers for performing anastomosis in a single operation
- A61B17/1155—Circular staplers comprising a plurality of staples
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B17/1114—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis of the digestive tract, e.g. bowels or oesophagus
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/03—Automatic limiting or abutting means, e.g. for safety
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00017—Electrical control of surgical instruments
- A61B2017/00115—Electrical control of surgical instruments with audible or visual output
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00017—Electrical control of surgical instruments
- A61B2017/00115—Electrical control of surgical instruments with audible or visual output
- A61B2017/00119—Electrical control of surgical instruments with audible or visual output alarm; indicating an abnormal situation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
- A61B2017/00389—Button or wheel for performing multiple functions, e.g. rotation of shaft and end effector
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/0042—Surgical instruments, devices or methods, e.g. tourniquets with special provisions for gripping
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/0046—Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B2017/07214—Stapler heads
- A61B2017/07257—Stapler heads characterised by its anvil
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B2017/07214—Stapler heads
- A61B2017/07271—Stapler heads characterised by its cartridge
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B2017/1132—End-to-end connections
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B2017/1135—End-to-side connections, e.g. T- or Y-connections
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/03—Automatic limiting or abutting means, e.g. for safety
- A61B2090/031—Automatic limiting or abutting means, e.g. for safety torque limiting
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0807—Indication means
- A61B2090/0811—Indication means for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument
Definitions
- the invention relates to the technical field of medical equipment, in particular to a knob assembly and a circular tube-type stapler.
- Gastrointestinal diseases are one of the most common diseases in humans.
- a circular tube-type stapler is often used to replace the doctor's manual operation to anastomize the digestive tract and other physiological tissues.
- the round tube stapler is a common surgical instrument. Most of them use axial inward binding. During the operation, they form an end-to-end or end-to-side anastomosis of the esophagus, stomach, intestine and other physiological tissues.
- the segmental tissues are contained and contained in the stapler, and after the firing is completed, a circular anastomosis is formed on the tissue to reconstruct the human body channel.
- a round tube type stapler includes a stapler body, an operation handle movably connected to the stapler body, and a nail anvil assembly cooperating with the body.
- the stapler body includes a staple cartridge assembly disposed at a distal end, the staple cartridge assembly includes a ring-shaped staple cartridge, a cutter; and a knob disposed at a proximal end of the body, the knob can rotate relative to the body, and the stapler
- the interior of the body also includes a nail anvil shaft disposed from the proximal end to the distal end.
- the distal end and the proximal end are relative to the operator.
- the end closer to the operator is the proximal end, and the end farther from the operator, that is, the end closer to the operation position is the distal end.
- the inside and the outside are relative to the axis of the stapler, the side near the axis is the inside, and the side away from the axis is the outside.
- the nail anvil assembly includes a nail anvil, a nail anvil cap disposed at a distal end of the nail anvil, and a knife anvil disposed inside the nail anvil.
- the nail anvil assembly may be directly connected to the distal end of the nail anvil shaft or connected through a nail anvil shaft connection .
- the nail anvil shaft penetrates from the purse of the stump tissue and is located at the distal end of the stapler body. Rotate the knob to gradually reduce the distance between the nail anvil assembly and the nail cartridge After reaching a suitable distance, it can reach the firing state, and then the operating handle can be used to complete the anastomosis.
- the round tube stapler is also more and more widely used in the treatment of diseases such as hemorrhoids.
- the knob In the process of rotating the knob to make the anvil assembly approach the staple cartridge, sometimes the knob can be rotated after the tissue is closed in place, so that the staple anvil assembly and the staple cartridge will continue to approach and continue to compress the tissue, causing tissue Excessive squeezing may even crush the tissue, which is very detrimental to the surgical results.
- the object of the present invention is to provide a knob assembly and a tube-type stapler.
- the knob driving member is rotated, when the resistance of the knob body reaches the preset resistance value, the knob assembly will no longer be able to Transmitting more torque, the knob assembly enters a failure mode at this time, and the gap between the anvil assembly and the staple cartridge remains unchanged without causing excessive tissue compression.
- An embodiment of the present invention provides a knob assembly for a round tube-type stapler, and a screw rod is provided inside the stapler; the knob assembly includes:
- a knob driving part and a knob body the knob body is sleeved on the outside of the screw rod, and when the knob body rotates, the screw rod is driven to move in the axial direction of the stapler;
- a first mating part and a second mating part the first mating part is an elastic mating part, and the first mating part has a blocking state and a yielding state, when the first mating part is in the blocking state, the first A mating member is linked with a second mating member, and when the first mating member is in a yielding state, the first mating member and the second mating member are not linked;
- the first fitting part is provided on the knob driving part, and the second fitting part is provided on the knob body; or, the first fitting part is provided on the knob body, and the second fitting part It is arranged on the knob driving part.
- the knob driving part when the knob driving part is rotated by an external force, and the rotation resistance of the knob body is greater than a preset resistance value, the first fitting part is deformed by the force of the second fitting part and enters a yielding state .
- the first fitting piece is an elastic sheet with a raised portion.
- an elastic sheet mounting groove is opened on the knob driving part or the knob body, and both ends of the elastic sheet are installed in the elastic sheet mounting groove.
- the elastic sheet includes a first guide surface, and when the knob driving member rotates in a first direction, the first guide surface of the first mating member contacts the second mating member.
- the first guide surface is a curved surface or an inclined surface.
- the elastic sheet includes a second guide surface, and when the knob driving member rotates toward the second direction, the second guide surface of the first mating member contacts the second mating member.
- the second guide surface is a curved surface or an inclined surface.
- the second fitting member includes at least one fitting structure, and the fitting structure is a protrusion or a groove.
- the mating structure includes a first side surface, and when the knob driving member rotates in a first direction, the first side surface of the mating structure contacts the first mating member, and the first side surface faces the first side The direction is inclined.
- the mating structure includes a second side surface, and when the knob driving member rotates toward the second direction, the second side surface of the mating structure contacts the first mating member.
- the second side of the mating structure is a right-angled surface, or the second side of the mating structure is inclined toward the second direction, and the second side of the mating structure is less inclined than the first side of the mating structure The degree of inclination.
- the knob driving member includes a knob housing, and the inner surface of the knob driving member is provided with the first matching member or the second matching member.
- a first boss is provided on the outer side of the knob body, the first fitting is provided on the inner side of the knob housing, and the second fitting is provided near the first boss End side or distal side;
- the second mating member is disposed on the inner side of the knob housing, and the first mating member is disposed on the proximal or distal side of the first boss.
- a second boss is further provided on the outer surface of the knob body, and the second boss is located on the proximal side of the first boss;
- the second boss is provided with the first fitting or the second fitting, and the height of the first fitting or the second fitting provided on the second boss is lower than that of the first boss Height, the distal end of the knob body cooperates with the first boss.
- knob rear cover located at the proximal end of the knob body, a distal end of the knob rear cover is provided with an internal thread of the rear cover, and a proximal end of the knob body is provided with an internal thread of the rear cover Match the external thread of the body.
- An embodiment of the present invention also provides a round tube type stapler including the knob assembly.
- the invention provides a knob assembly for a round tube-type stapler.
- the knob assembly is divided into a knob body and a knob driving member.
- the knob driving member and the knob body are selectively linked.
- the knob driver can drive the knob body to rotate together.
- the knob body can drive the nail anvil assembly along the axial direction of the stapler through the screw rod to approach the staple cartridge.
- the knob driver cannot drive the knob body to rotate.
- the knob assembly enters the failure mode, and the gap between the nail anvil assembly and the nail cartridge remains unchanged, without causing excessive tissue squeezing.
- FIG. 1 is a schematic structural diagram of a stapler according to a first embodiment of the present invention
- FIG. 2 is a schematic diagram of the knob assembly and the screw rod of the first embodiment of the present invention
- FIG. 3 is a cross-sectional view in the direction A1-A1 of FIG. 2;
- FIG. 4 is a schematic structural view of a second boss of the first embodiment of the present invention.
- FIG. 5 is a schematic structural view of the knob body of the first embodiment of the present invention.
- FIG. 6 is a schematic structural view of the shrapnel of the first embodiment of the present invention.
- FIG. 7 is a schematic diagram of the structure of the knob housing of the first embodiment of the present invention.
- FIG. 8 is a schematic structural view of the first knob back cover of the first embodiment of the present invention.
- FIG. 9 is a schematic diagram of the knob assembly and the screw rod of the second embodiment of the present invention.
- FIG. 10 is a cross-sectional view in the direction A2-A2 in FIG. 9;
- FIG. 11 is a schematic structural view of the knob body of the second embodiment of the present invention.
- FIG. 12 is a schematic structural view of a shrapnel according to a second embodiment of the present invention.
- FIG. 13 is a schematic structural diagram of a knob housing of a second embodiment of the present invention.
- the present invention provides a knob assembly for a circular tube-type stapler.
- the inside of the stapler is provided with a screw rod, and the knob assembly includes a selectively linked knob drive And a knob body, wherein the knob body is sleeved on the outside of the screw rod, and when the knob body rotates, the screw rod is driven to move in the axial direction of the stapler.
- the knob driving part and the knob body are respectively provided with one of two matching parts, and the two matching parts include a first matching part and a second matching part.
- first fitting member and the second fitting member are respectively disposed on the knob driving member and the knob body, or the first fitting member and the second fitting member are respectively disposed on the knob body and the knob driving member.
- the invention further provides a round tube-type stapler including the knob assembly.
- the first mating member is an elastic mating member, and the first mating member has a blocking state and a yielding state.
- the first mating member and the second mating member Interlocking, when the first mating member is in a yielding state, the first mating member and the second mating member are not interlocked.
- the knob driving part When the operator rotates the knob driving part in the first direction, the knob driving part transmits the rotational torque through the two matching parts. Before the rotation resistance of the knob body reaches the preset resistance value, the first matching part is in the blocking state, that is, blocking The relative movement between the knob driving part and the knob body, the knob driving part can drive the knob body to rotate together through the two matching parts, that is, the two matching parts are in a linked state, and the knob body further drives the nail anvil assembly along the stapler through the screw rod Move axially close to the cartridge assembly.
- the knob body will be hindered first
- the resistance to directional rotation corresponds to the tissue squeezing force between the anvil assembly and the cartridge assembly. At this time, the rotation of the knob body in the first direction can only be performed by applying a rotation torque greater than the resistance on the knob body.
- the interaction force between the first fitting member and the second fitting member is greater than the elastic fitting member's force to overcome elastic deformation, and the first fitting member deforms and Enter the concession state, that is, the relative movement between the knob drive part and the knob body is no longer blocked, the knob drive part and the knob body are no longer linked, and the knob assembly enters the failure mode at this time, the gap between the nail anvil assembly and the nail cartridge Keep it the same without over-squeezing the tissue.
- FIGS. 1-8 show the structure of the knob assembly of the first embodiment of the present invention, wherein the first fitting is provided on the knob driving part, and the second fitting is provided on the knob body;
- FIGS. 9-13 show the present According to the structure of the knob assembly of the second embodiment of the invention, the first fitting is provided on the knob body, and the second fitting is provided on the knob driving part.
- the stapler includes a stapler body and an anvil assembly 83, wherein the stapler body includes a stapler housing 81, a staple cartridge assembly 82 located at the distal end of the stapler housing 81, and a proximal end at the stapler housing 81
- the knob assembly is rotated, the nail anvil assembly 83 is driven to move axially through the screw rod 6 and the anvil shaft sequentially, away from or close to the nail cartridge assembly 82.
- the nail anvil assembly 83 is directly connected to the stapler body, and the nail anvil assembly 83 cannot be anastomosed from The nail body is removed, and the nail anvil assembly 83 does not include a nail anvil shaft, and the nail anvil is directly connected to the distal end of the screw rod.
- the knob assembly includes a knob body 1 and a knob driver.
- the knob driving part is the knob housing 2, and the operator directly contacts the knob housing 2 when operating the knob assembly, but the present invention is not limited to this.
- the knob body 1 is sleeved on the outside of the screw rod 6, and the knob body 1 cooperates with the screw rod 6 through the internal thread 13 in the body.
- the screw 6 can be moved toward the proximal end of the stapler, and the nail anvil assembly 83 can be further driven toward the nail cartridge assembly 82.
- the screw rod 6 can be moved toward the distal end of the stapler, so that the nail anvil assembly 83 is away from the nail cartridge assembly 82.
- the first fitting is provided on the knob casing 2 and the second fitting is provided on the knob body 1.
- the first mating member is an elastic mating member, and the first mating member has a blocking state and a yielding state. When the first mating member is in the blocking state, the first mating member and the second mating member Linkage, the knob housing 2 and the knob body 1 are linked, and when the first mating member is in a yielding state, the first mating member and the second mating member are not linked, and the knob housing 2 and the knob body 1 are not linked.
- the first fitting piece is the elastic piece 21 having the convex portion 211.
- An elastic piece mounting groove 22 is provided on the inner side of the knob housing 2, and the first end 212 and the second end 213 of the elastic piece 21 are installed in the elastic piece mounting groove 22.
- the shrapnel 21 may be a metal shrapnel or a plastic shrapnel, or other structure that can be elastically deformed and can recover its original state after removing external forces. This is only one setting method of the elastic fitting.
- the elastic fitting can also adopt a structure in which the spring and the movable block fit together, etc., which are within the protection scope of the present invention.
- the second mating member includes at least one mating structure, and the mating structure is a protrusion or a groove.
- the second fitting member includes a plurality of protrusions 11 that are evenly distributed on the outer side of the knob body 1.
- the protrusion 11 has a first side 111 and a second side 112. When the knob housing 2 rotates in the first direction, the first side 111 of the protrusion 11 contacts the elastic sheet 21, and when the knob housing 2 rotates in the second direction, the protrusion The second side 112 of 11 is in contact with the shrapnel 21.
- the external force is first applied so that the knob housing 2 is rotated by the external force.
- the knob housing 2 and the knob body 1 transmit the external force to the knob body 1 through the two mating parts.
- the first mating part will give the second mating part one Rotational force, if the rotation resistance of the knob body 1 is less than the preset resistance value at this time, the reaction force of the second fitting member to the first fitting member is less than the elastic sheet 21's force to overcome elastic deformation, the elastic sheet 21 will not deform, the first The fitting is in a blocking state, and the knob casing 2 drives the knob body 1 to rotate together through the cooperation of the elastic piece 21 and the protrusion 11.
- the operator When the operator applies an external force to drive the knob housing 2 to rotate, if the rotational resistance of the knob body 1 reaches or exceeds the preset resistance value, the operator needs to apply a greater external force. At this time, the reaction force of the protrusion 11 to the elastic piece 21 is greater than that of the elastic piece 21 Overcoming the force of elastic deformation, the elastic piece 21 is deformed by the force of the protrusion 11 and enters the yielding state, that is, the protrusion 11 and the elastic piece 21 cannot transmit external force to the knob body 1, the knob housing 2 cannot be linked with the knob body 1, the knob The casing 2 is idling idle, and can make a clicking sound when the protrusion 11 and the elastic piece 21 are released.
- the knob assembly is in a failure state, the nail forming gap between the nail anvil assembly 83 and the nail cartridge assembly 82 remains unchanged, and the tissue will not be excessively pressed. If the operator hears a click or according to the feel of rotating the knob assembly in the failure state, it can determine that the current anvil assembly 83 has moved into place, and can perform the firing operation of the stapler.
- the elastic piece 21 includes a first guide surface 214, and when the knob housing 2 is rotated in the first direction, the first guide surface 214 of the elastic piece 21 is in contact with the protrusion 11.
- the first guide surface 214 may be a curved surface or an inclined surface.
- the elastic piece 21 may further include a second guide surface 215. When the knob housing 2 rotates in the second direction, the second guide surface 215 of the elastic piece 21 contacts the protrusion 11, and the second guide surface 215 Can be curved or inclined.
- a first boss 14 is provided on the outer surface of the knob body 1
- a second boss 15 is further provided on the proximal end side of the first boss 14, and the protrusion 11 is provided on the first Two boss 15.
- the second boss 15 and the plurality of protrusions 11 form a gear disc structure. This is only one embodiment. In other alternative embodiments, only one boss may be provided, or the second boss 15 may be provided on the distal side of the first boss 14, etc., all of which belong to the present invention. Within the scope of protection.
- the height of the protrusion 11 on the second boss 15 is lower than that of the first boss 14; adaptively, a stepped surface is provided on the distal end of the rotating housing 2 to cooperate with the first boss 14, The movement of the knob housing in the axial direction is limited; the inner side of the distal end of the rotating housing 2 is provided with an elastic sheet 21 to cooperate with the protrusion 11.
- a knob back cover is further provided at the proximal end of the knob assembly, the knob back cover includes a first knob back cover 5 and a second knob back cover 7, and the distal end of the first knob back cover 5 is provided with a back cover Internal thread 51, the proximal end of the knob body 1 is provided with a body external thread 12 that cooperates with the internal thread 51 of the back cover, the first knob back cover 5 is screwed to the proximal end of the knob body 1, and the second The knob back cover 7 may be installed at the proximal end of the first knob back cover 5.
- the first direction is clockwise and the second direction is counterclockwise.
- the first side 111 of the protrusion 11 is inclined toward the first direction, so that the knob housing 2 is deformed when it rotates clockwise and does not link with the knob body 1
- the rear shrapnel 21 more easily crosses the protrusion 11.
- the second side surface 112 of the protrusion 11 is an approximately right-angled surface or the second side surface 112 is inclined toward the second direction to prevent the knob housing from rotating in the second direction, so as to provide tactile feedback to the doctor and prompt the doctor for the direction of rotation.
- the second side surface 112 of the protrusion 11 is an approximately right angle surface, which means that the second side surface 112 is substantially perpendicular to the outer side surface of the knob body 1. If the second side 112 of the protrusion 11 is inclined toward the second direction, the inclination of the second side 112 is smaller than the inclination of the first side 111. In this way, when the knob housing 2 rotates in the second direction, the elastic piece 21 cannot easily pass over the protrusion 11, thereby preventing the knob assembly from being unable to drive the knob body 1 along when the reverse operation is required after the knob assembly is tightened in the first direction Rotation in the second direction increases the distance between the staple cartridge assembly 82 and the anvil assembly 83.
- FIGS. 9-13 the structure of the knob assembly of the second embodiment of the present invention is shown.
- the difference between the second embodiment and the first embodiment is that the first fitting is provided on the knob body 3 and the second fitting is provided on the knob housing 4.
- the first direction is counterclockwise and the second direction is clockwise.
- the first fitting piece is a spring piece 31 including a protrusion 311, and the second fitting piece includes a plurality of protrusions 41 provided on the inner side of the knob housing 4.
- the elastic piece 31 contacts the first side 411 of the protrusion 41, and when the knob body 3 rotates in the second direction, the elastic piece 31 contacts the second side 412 of the protrusion 41.
- the inclination of the first side 411 is greater than the inclination of the second side 412, so that when the rotary housing 4 rotates in the first direction, the rotation resistance of the knob body 3 is greater than the resistance preset value, the spring 31 is more likely to The protrusion 41 is tripped, and it is ensured that after the rotating housing 4 is tightened in the first direction, the knob body 3 can be driven to rotate through the knob housing 4 in the second direction.
- the outer surface of the knob body 3 is provided with an elastic piece mounting groove 32, and both ends 312 and 313 of the elastic piece 31 are respectively disposed in the elastic piece mounting groove 32.
- the shrapnel 31 includes a first guide surface 314 and a second guide surface 315.
- the knob body 1 is provided with a first boss 33 and a second boss 34, and the second boss 34 is provided on the proximal end side of the first boss 33.
- the first boss 33 interacts with the distal end of the knob housing 4 to limit the axial movement of the knob housing.
- the shrapnel mounting groove 32 is provided on the outer surface of the second boss 34. The distal end of the knob housing 4 cooperates with the first boss 33.
- the working principle is similar to that of the knob assembly of the first embodiment.
- the external force is first applied to rotate the knob housing 4.
- the knob housing 4 transmits the external force to the knob body 3 through the two mating parts.
- the first mating part will give a rotation force to the second mating part.
- the rotation resistance of the knob body 3 is less than the preset resistance value, the force exerted by the second fitting member on the first fitting member is less than the force of the elastic sheet 31 to overcome the elastic deformation, the elastic sheet 31 will not deform, the first fitting member is in the blocking state, the knob
- the housing 4 drives the knob body 3 to rotate together through the cooperation of the elastic sheet 31 and the protrusion 41.
- the operator When the operator applies an external force to drive the knob housing 4 to rotate, if the rotational resistance of the knob body 3 reaches or exceeds the preset resistance value, the operator needs to apply a greater external force. At this time, the force exerted by the protrusion 41 on the elastic sheet 31 is greater than that of the elastic sheet 31 Overcoming the force of elastic deformation, the spring piece 31 is deformed by the force of the protrusion 41 and enters the yielding state, that is, the protrusion 41 and the spring piece 31 cannot transmit external force to the knob body 3, the knob housing 4 cannot be linked with the knob body 3, the knob The casing 4 is idling idle, and can make a clicking sound when the protrusion 41 and the spring piece 31 are released.
- the knob assembly is in a failure state, the nail forming gap between the nail anvil assembly 83 and the nail cartridge assembly 82 remains unchanged, and the tissue will not be excessively pressed. If the operator hears a click or according to the feel of rotating the knob assembly in the failure state, it can determine that the current anvil assembly 83 has moved into place, and can perform the firing operation of the stapler.
- the number of the elastic pieces may be two or more, for example, when the elastic pieces are two, they may be symmetrically arranged To strengthen the stability of the structure.
- the two embodiments provided by the present invention are only examples, and in practical applications, some features of the two embodiments can also be combined to obtain a new technical solution. Or change one or some of the features to obtain a new technical solution, which falls within the protection scope of the present invention.
- the first mating piece may not adopt the structure of an elastic piece, but adopts the structure in which the movable block and the spring cooperate.
- the magnitude of the force to overcome the elastic deformation is the spring force of the spring.
- the second mating piece may also adopt the protrusion instead of the protrusion.
- the structure of the groove, and the number and arrangement of the matching structures can also be selected according to needs.
- the invention provides a knob assembly for a round tube-type stapler.
- the knob assembly is divided into a knob body and a knob driving member.
- the knob driving member and the knob body are selectively linked.
- the knob driver can drive the knob body to rotate together.
- the knob body can drive the nail anvil assembly along the axial direction of the stapler through the screw rod to approach the staple cartridge.
- the knob driver cannot drive the knob body to rotate.
- the knob assembly enters the failure mode, and the gap between the nail anvil assembly and the nail cartridge remains unchanged, without causing excessive tissue squeezing.
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- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Molecular Biology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Physiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Pathology (AREA)
- Surgical Instruments (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
Description
Claims (17)
- 一种旋钮组件,其特征在于,用于圆管型吻合器,所述吻合器的内部设置有一丝杆;所述旋钮组件包括:旋钮驱动件和旋钮本体,所述旋钮本体套设于所述丝杆的外部,所述旋钮本体旋转时带动丝杆沿吻合器的轴向移动;第一配合件和第二配合件,所述第一配合件为弹性配合件,且所述第一配合件具有阻挡状态和让位状态,所述第一配合件处于阻挡状态时,所述第一配合件与第二配合件联动,所述第一配合件处于让位状态时,所述第一配合件与第二配合件不联动;所述第一配合件设置于所述旋钮驱动件,且所述第二配合件设置于所述旋钮本体;或,所述第一配合件设置于所述旋钮本体,且所述第二配合件设置于所述旋钮驱动件。
- 根据权利要求1所述的旋钮组件,其特征在于,所述旋钮驱动件受外力而旋转,且所述旋钮本体的旋转阻力大于预设阻力值时,所述第一配合件受到第二配合件的作用力产生变形而进入让位状态。
- 根据权利要求2所述的旋钮组件,其特征在于,所述第一配合件为具有凸起部的弹片。
- 根据权利要求3所述的旋钮组件,其特征在于,所述旋钮驱动件或所述旋钮本体上开设有弹片安装槽,所述弹片的两端安装于所述弹片安装槽中。
- 根据权利要求3所述的旋钮组件,其特征在于,所述弹片包括第一引导面,所述旋钮驱动件朝向第一方向旋转时,所述第一配合件的第一引导面 与所述第二配合件接触。
- 根据权利要求5所述的旋钮组件,其特征在于,所述第一引导面为弧面或斜面。
- 根据权利要求5所述的旋钮组件,其特征在于,所述弹片包括第二引导面,所述旋钮驱动件朝向第二方向旋转时,所述第一配合件的第二引导面与所述第二配合件接触。
- 根据权利要求7所述的旋钮组件,其特征在于,所述第二引导面为弧面或斜面。
- 根据权利要求1所述的旋钮组件,其特征在于,所述第二配合件包括至少一个配合结构,所述配合结构为凸起或凹槽。
- 根据权利要求9所述的旋钮组件,其特征在于,所述配合结构包括第一侧面,所述旋钮驱动件朝向第一方向旋转时,所述配合结构的第一侧面与所述第一配合件接触,所述第一侧面朝向第一方向倾斜。
- 根据权利要求10所述的旋钮组件,其特征在于,所述配合结构包括第二侧面,所述旋钮驱动件朝向第二方向旋转时,所述配合结构的第二侧面与第一配合件接触。
- 根据权利要求11所述的旋钮组件,其特征在于,所述配合结构的第二侧面为直角面,或所述配合结构的第二侧面朝向第二方向倾斜,且所述配合结构的第二侧面的倾斜程度小于配合结构的第一侧面的倾斜程度。
- 根据权利要求1所述的旋钮组件,其特征在于,所述旋钮驱动件包括旋钮外壳,所述旋钮驱动件的内侧面设置有所述第一配合件或第二配合件。
- 根据权利要求13所述的旋钮组件,其特征在于,所述旋钮本体的外 侧面设置有第一凸台,所述第一配合件设置于所述旋钮外壳的内侧面,所述第二配合件设置于所述第一凸台的近端侧或远端侧;或所述第二配合件设置于所述旋钮外壳的内侧面,所述第一配合件设置于所述第一凸台的近端侧或远端侧。
- 根据权利要求14所述的旋钮组件,其特征在于,所述旋钮本体的外侧面还设置有第二凸台,所述第二凸台位于第一凸台的近端侧;所述第二凸台上设置有所述第一配合件或第二配合件,且设置于所述第二凸台的第一配合件或第二配合件的高度低于所述第一凸台的高度,所述旋钮本体的远端与所述第一凸台相配合。
- 根据权利要求1所述的旋钮组件,其特征在于,还包括位于所述旋钮本体的近端的旋钮后盖,所述旋钮后盖的远端设置有后盖内螺纹,所述旋钮本体的近端设置有与所述后盖内螺纹相配合的本体外螺纹。
- 一种圆管型吻合器,其特征在于,包括权利要求1至16中任一项所述的旋钮组件。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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JP2021535004A JP2022516237A (ja) | 2018-12-18 | 2019-12-18 | ノブアセンブリ及び円管型ステープラー |
BR112021010191-8A BR112021010191A2 (pt) | 2018-12-18 | 2019-12-18 | montagem de botão e grampeador circular |
AU2019408359A AU2019408359B2 (en) | 2018-12-18 | 2019-12-18 | Knob assembly and circular stapler |
CA3121951A CA3121951C (en) | 2018-12-18 | 2019-12-18 | Knob assembly and circular stapler |
KR1020217019850A KR102668956B1 (ko) | 2018-12-18 | 2019-12-18 | 노브 어셈블리 및 원형 스테이플러 |
US17/298,876 US11877749B2 (en) | 2018-12-18 | 2019-12-18 | Knob assembly and circular stapler |
EP19899353.7A EP3900645B1 (en) | 2018-12-18 | 2019-12-18 | Knob assembly and round tube type stapler |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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CN201822131322.6 | 2018-12-18 | ||
CN201811549388.5A CN111329546A (zh) | 2018-12-18 | 2018-12-18 | 旋钮组件及圆管型吻合器 |
CN201822131322.6U CN209499811U (zh) | 2018-12-18 | 2018-12-18 | 旋钮组件及圆管型吻合器 |
CN201811549388.5 | 2018-12-18 |
Publications (1)
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WO2020125676A1 true WO2020125676A1 (zh) | 2020-06-25 |
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PCT/CN2019/126297 WO2020125676A1 (zh) | 2018-12-18 | 2019-12-18 | 旋钮组件及圆管型吻合器 |
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Country | Link |
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US (1) | US11877749B2 (zh) |
EP (1) | EP3900645B1 (zh) |
JP (1) | JP2022516237A (zh) |
KR (1) | KR102668956B1 (zh) |
AU (1) | AU2019408359B2 (zh) |
BR (1) | BR112021010191A2 (zh) |
CA (1) | CA3121951C (zh) |
WO (1) | WO2020125676A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116746981A (zh) * | 2023-08-18 | 2023-09-15 | 浙江归创医疗科技有限公司 | 侵入器械 |
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- 2019-12-18 EP EP19899353.7A patent/EP3900645B1/en active Active
- 2019-12-18 US US17/298,876 patent/US11877749B2/en active Active
- 2019-12-18 CA CA3121951A patent/CA3121951C/en active Active
- 2019-12-18 BR BR112021010191-8A patent/BR112021010191A2/pt active IP Right Grant
- 2019-12-18 KR KR1020217019850A patent/KR102668956B1/ko active IP Right Grant
- 2019-12-18 WO PCT/CN2019/126297 patent/WO2020125676A1/zh unknown
- 2019-12-18 JP JP2021535004A patent/JP2022516237A/ja active Pending
- 2019-12-18 AU AU2019408359A patent/AU2019408359B2/en active Active
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Also Published As
Publication number | Publication date |
---|---|
EP3900645A4 (en) | 2022-02-16 |
KR20210095922A (ko) | 2021-08-03 |
EP3900645A1 (en) | 2021-10-27 |
AU2019408359B2 (en) | 2022-09-08 |
US20220054135A1 (en) | 2022-02-24 |
US11877749B2 (en) | 2024-01-23 |
JP2022516237A (ja) | 2022-02-25 |
BR112021010191A2 (pt) | 2021-08-17 |
KR102668956B1 (ko) | 2024-05-24 |
AU2019408359A1 (en) | 2021-06-24 |
CA3121951C (en) | 2023-08-22 |
EP3900645B1 (en) | 2024-06-12 |
CA3121951A1 (en) | 2020-06-25 |
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