WO2024114466A1 - Mécanisme de tête pivotante et agrafeuse chirurgicale - Google Patents

Mécanisme de tête pivotante et agrafeuse chirurgicale Download PDF

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Publication number
WO2024114466A1
WO2024114466A1 PCT/CN2023/133119 CN2023133119W WO2024114466A1 WO 2024114466 A1 WO2024114466 A1 WO 2024114466A1 CN 2023133119 W CN2023133119 W CN 2023133119W WO 2024114466 A1 WO2024114466 A1 WO 2024114466A1
Authority
WO
WIPO (PCT)
Prior art keywords
matching
head mechanism
swing
driving
locking member
Prior art date
Application number
PCT/CN2023/133119
Other languages
English (en)
Chinese (zh)
Inventor
王叶挺
Original Assignee
天臣国际医疗科技股份有限公司
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
Application filed by 天臣国际医疗科技股份有限公司 filed Critical 天臣国际医疗科技股份有限公司
Publication of WO2024114466A1 publication Critical patent/WO2024114466A1/fr

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Classifications

    • 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
    • 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
    • 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

Definitions

  • the present application relates to the technical field of medical devices, and in particular to a swing head mechanism and a surgical stapler.
  • a surgical stapler includes a stapler body and an end effector that cooperates with the stapler body.
  • the end effector needs to have more angle options relative to the stapler body. Therefore, a swing head mechanism can be provided, and the swing head mechanism is connected to the end effector through a swing head pull rod.
  • the swing head mechanism drives the swing head pull rod to move along the axial direction of the stapler
  • the distal end side of the swing head pull rod drives the end effector to swing clockwise or counterclockwise relative to the stapler body.
  • the purpose of the present application is to provide a swing head mechanism and a surgical stapler.
  • the first mating part is first operated to drive the locking part from the first position to the second position so as not to block the rotation of the driving part, thereby avoiding damage to the locking part when the driving part rotates.
  • An embodiment of the present application provides a swing head mechanism for a surgical stapler, the swing head mechanism comprising a driving member and a swing head pull rod, the driving member being configured to drive the swing head pull rod to move axially along the stapler when rotating, the swing head mechanism also comprising: a locking member movably disposed on the outer side of the driving member, wherein when the locking member is in a first position, the locking member blocks the rotational movement of the driving member, and when the locking member is in a second position, the driving member can be driven to rotate, the first position being closer to the driving member than the second position; and a first mating member being configured to be operated to drive the locking member to enter the second position from the first position.
  • the driving member and the first mating member are coaxially disposed in a mounting hole formed by a first shell of the surgical stapler, a side wall of the mounting hole is circular with a notch, and the retaining member is movably disposed at the position of the notch.
  • a first guide portion is provided inside the notch, and the retaining member is provided with a second guide portion, and the first guide portion guides the retaining member to move between the first position and the second position by cooperating with the second guide portion.
  • a support is further included, which is at least partially supported on the outer periphery of the mounting hole and at least partially covers the retaining member.
  • a retaining member limiting hole is provided on the side of the support facing the retaining member, and the retaining member is at least partially located in the retaining member limiting hole.
  • a second mating member is further included, wherein the second mating member forms a non-rotatable connection with the driving member, and when the locking member is in the first position, the locking member at least partially abuts against the second mating member to prevent the second mating member from rotating.
  • the locking member includes a first matching portion, a first groove is provided on a side surface of the first matching member, and when the locking member is in the first position, the first matching portion at least partially enters the first groove.
  • the locking member further includes a second matching portion, a second groove is provided on a side surface of the second matching member, and when the locking member is in the first position, the second matching portion at least partially enters the second groove.
  • first angle between the first groove walls of each of the first grooves
  • second angle between the second groove walls of each of the second grooves
  • the first angle is greater than the second angle
  • the depth of the first groove is less than the depth of the second groove.
  • the driving member includes a driving shaft and a driving member body, the second mating member and the first mating member are sequentially arranged on a first side of the driving member body, and the first mating member is rotatable relative to the driving shaft.
  • the first mating piece and the second mating piece are both disc-shaped and sleeved on the outside of the drive shaft, and the first mating piece is provided with a plurality of the first grooves distributed along the circumferential direction on the side facing the locking piece, and the second mating piece is provided with a plurality of the second grooves distributed along the circumferential direction on the side facing the locking piece.
  • the width of the first matching portion of the retaining member is greater than the width of the second matching portion, and/or the end of the first matching portion is closer to the driving shaft than the end of the second matching portion.
  • an operating member is further included, and the operating member is configured to drive the first matching member to rotate and drive the locking member from the first position to the second position when the operating member rotates a first stroke, and drive the driving member to rotate through the second matching member when the operating member continues to rotate a second stroke.
  • it also includes a first pin shaft, the operating member is provided with a first mounting hole, the first matching member is provided with a second mounting hole, the second matching member is provided with a third mounting hole, the first pin shaft is sequentially inserted into the first mounting hole, the second mounting hole and the third mounting hole, and the circumferential length of the third mounting hole is greater than The outer diameter of the first pin.
  • a support is further included, the support is provided with an arc-shaped rotation limiting hole, and the first pin shaft is passed through the rotation limiting hole.
  • the swing head mechanism when the operating member is configured to rotate a first stroke, the first pin shaft moves from a third relative position to a fourth relative position relative to the driving member; the swing head mechanism also includes an elastic member, configured to give the first pin shaft a biasing force to cause it to move from the fourth relative position to the third relative position.
  • An embodiment of the present application further provides a surgical stapler, including the above-mentioned swing head mechanism.
  • An embodiment of the present application further provides a surgical stapler, including the above-mentioned swing head mechanism.
  • the first matching member is first operated to drive the retaining member from the first position to the second position so as not to block the rotation of the driving member, thereby avoiding damage to the retaining member when the driving member rotates, and during the rotation of the driving member, there is no interference and obstruction of the retaining member, so that the swing of the end effector is smoother.
  • the retaining member can be movably arranged on the outside of the driving member, which can more conveniently arrange the internal structure of the swing head mechanism without affecting the structure and strength of the driving wheel itself, and the design space of the retaining member is more sufficient, and the size of the retaining member can be designed more reasonably to ensure sufficient strength, so that when a thicker tissue anastomosis operation is performed and a larger firing force is applied, the swing angle can also be locked, ensuring the smooth progress of the operation and improving the confidence of the doctor.
  • the design space of the locking member is more sufficient, so that the length of the second matching portion of the locking member can be designed to be relatively longer, and the depth of the second groove of the corresponding second matching member can be designed to be relatively deeper, thereby making the locking effect better and more adaptable to operations that require applying a larger firing force.
  • FIG1 is a schematic diagram of the cooperation between a swing head mechanism and a sleeve according to an embodiment of the present application
  • FIG2 is a schematic structural diagram of an operating member according to an embodiment of the present application.
  • FIG3 is a schematic structural diagram of the cooperation between the swing head mechanism and the first housing in an embodiment of the present application without the operating member;
  • FIG4 is a top view of the cooperation between the swing head mechanism and the first housing without the operating member and the support according to an embodiment of the present application;
  • FIG. 5 is a schematic structural diagram of the cooperation between the swing head mechanism and the first housing in an embodiment of the present application without the operating member and the support;
  • FIGS. 6 and 7 are schematic diagrams of the support and other components in cooperation with one embodiment of the present application.
  • FIG8 is a schematic structural diagram of a support according to an embodiment of the present application.
  • FIG9 is a schematic structural diagram of the cooperation between the swing head mechanism and the first housing according to an embodiment of the present application.
  • FIG10 is a schematic structural diagram of a driving swing head pull rod according to an embodiment of the present application.
  • FIG11 is a schematic diagram of the cooperation between the locking member and other components according to an embodiment of the present application.
  • FIG12 is a schematic diagram of the combination of various components of the swing head mechanism according to an embodiment of the present application.
  • FIG13 is a schematic diagram of the cooperation between the locking member and the second matching member according to an embodiment of the present application.
  • FIG14 is a schematic structural diagram of a locking member according to an embodiment of the present application.
  • FIG15 is a schematic diagram of the structure of the first housing and the locking member in cooperation with each other according to an embodiment of the present application;
  • FIG16 is a partial top view of a swing head mechanism according to an embodiment of the present application.
  • FIG17 is a partial front view of a swing head mechanism according to an embodiment of the present application.
  • Fig. 18 is a cross-sectional view taken along the A-A direction in Fig. 17 .
  • the present application provides a head swing mechanism for a surgical stapler and a surgical stapler including the head swing mechanism.
  • the surgical stapler includes a stapler body and an end effector that cooperates with the stapler body.
  • the head swing mechanism includes a driving member and a head swing pull rod, wherein the driving member is configured to drive the head swing pull rod to move along the axial direction of the stapler when rotating, and the axial movement of the head swing pull rod can drive the end effector to swing laterally relative to the stapler body.
  • the swing head mechanism also includes a retaining member and a first matching member.
  • the retaining member When the retaining member is in the first position, the retaining member blocks the rotational movement of the driving member and locks the end effector in the current position.
  • the driving member When the retaining member is in the second position, the driving member can be driven to rotate, and the first position is closer to the driving member than the second position.
  • the first matching member is configured to be operated to drive the retaining member from the first position to the second position, so that the retaining member is unlocked from the driving member, and the end effector can be swung through the driving member and the swing head pull rod in turn, avoiding damage to the retaining member when the driving member rotates, and during the rotation of the driving member, there is no interference from the retaining member, so that the swing of the end effector is smoother.
  • the retaining member can be movably arranged on the outside of the driving member, which can more conveniently arrange the internal structure of the swing head mechanism, and will not affect the structure and strength of the driving wheel itself, and the design space of the retaining member is more sufficient, and the size of the retaining member can be designed more reasonably to ensure sufficient strength, so that when a large firing force is applied during a thick tissue anastomosis operation, it can also maintain swinging. Angle locking ensures smooth operation and improves the doctor's confidence.
  • the surgical stapler includes a stapler body and an end effector matched with the stapler body.
  • the stapler body includes a sleeve 83 extending along the axial direction of the stapler, and a swing head pull rod 72 (shown in FIG4 ) extending along the axial direction of the stapler is provided inside the sleeve 83, and the distal end of the swing head pull rod 72 is connected to the end effector.
  • the swing head mechanism includes a housing, and the housing includes a first housing 81 located above and a second housing 82 located below. A circular mounting hole 811 is provided on the upper surface of the first housing 81. As shown in FIGS.
  • a knob-shaped operating member 1 is provided above the first housing 81, which is used to drive the structure inside the first housing 81 to operate (the specific working principle is described below).
  • the operating member 1 includes an operating portion 11, and the user can drive the operating member 1 to rotate relative to the first housing 81 through the operating portion 11, and a first matching hole 13 is provided at the bottom of the operating member 1.
  • a support 9 is further provided between the operating member 1 and the first housing 81, and the support 9 is fixed and non-rotatable relative to the first housing 81.
  • the upper surface of the support 9 contacts the lower surface of the operating member 1, and the lower surface of the support 9 contacts the outer edge of the opening of the mounting hole 811.
  • the swing mechanism further comprises a driving member 6 and a swing connecting rod 71, wherein the driving member 6 is located in the mounting hole 811 of the first housing 81, the swing connecting rod 71 is matched with the bottom of the driving member 6, and the swing connecting rod 71 is connected to the proximal end of the swing pull rod 72.
  • the driving member 6 comprises a driving shaft 61 and a disc-shaped driving member body 62, wherein the top end of the driving shaft 61 is at least partially located in the first matching hole 13 (shown in Fig. 2) of the driving member 6, and is rotatable relative to the first matching hole 13.
  • the driving member 6 comprises a driving shaft 61 and a disc-shaped driving member body 62, wherein the top end of the driving shaft 61 is at least partially located in the first matching hole 13 (shown in Fig. 2) of the driving member 6, and is rotatable relative to the first matching hole 13.
  • the swing connecting rod 71 is provided with a waist-shaped hole 711, and the driving member body 62 is provided with a second pin 73, which is penetrated in the waist-shaped hole 711, so as to realize the eccentric connection between the swing connecting rod 71 and the driving member body 62, and through this eccentric connection structure, the rotational motion of the driving member body 62 can be converted into the axial motion of the swing connecting rod 71. Therefore, when the driving member 6 rotates, it can drive the swing head connecting rod 71 to move along the axial direction of the stapler, and the swing head connecting rod 71 drives the swing head pull rod 72 to move along the axial direction of the stapler, thereby adjusting the lateral swing angle of the end actuator.
  • the distal side and the proximal side are relative to the operator, the side closer to the operator is the proximal side, the side farther from the operator, that is, the side closer to the surgical site is the distal side, and the direction along the axis of the stapler is the axial direction, that is, the direction from the distal side to the proximal side of the stapler, or from the proximal side to the distal side of the stapler.
  • the S1 direction is the direction from the distal side to the proximal side
  • the S1 direction or the direction with respect to the distal side is the same as the S2 direction.
  • the direction opposite to S1 is the axial direction.
  • the S3 direction is the lateral direction, i.e., the width direction.
  • the S2 direction is the longitudinal direction, i.e., the height direction.
  • the inner side and the outer side are relative to the center of the component, the side close to the center is the inner side, and the side away from the center is the outer side.
  • the swing head mechanism also includes a locking member 3, a first matching member 2 and a second matching member 5.
  • the second matching member 5 and the first matching member 2 are both disc-shaped, and the second matching member 5 and the first matching member 2 are sequentially inserted into the driving shaft 61.
  • the first matching member 2 is rotatable relative to the driving shaft 61.
  • the second matching member 5 is not rotatable relative to the driving shaft 61.
  • a second matching hole 24 is provided inside the first matching member 2.
  • a third matching hole 53 is provided inside the second matching member 5.
  • S0 in Figure 12 represents the axial direction of the driving shaft 61.
  • the second matching hole 24 is a circular hole, and the inner diameter of the second matching hole 24 is greater than or equal to the maximum outer diameter of the driving shaft 61, so that the first matching member 2 can rotate relative to the driving shaft 61.
  • the inner surface of the third matching hole 53 is provided with a first anti-rotation structure 531, and the outer surface of the driving shaft 61 is provided with a second anti-rotation structure 611.
  • the first anti-rotation structure 531 and the second anti-rotation structure 611 form an embedded fit, so that the second fitting member 5 cannot rotate relative to the drive shaft 61.
  • the second fitting member 5 rotates, the second fitting member 5 drives the drive member 6 to rotate as a whole.
  • the support 9 is provided with a receiving groove 91, the first fitting member 2 is at least partially located inside the receiving groove 91, and the second fitting member 5 is located below the support 9.
  • An axial hole 93 is provided in the center of the support 9.
  • the axial hole 93 is a circular hole, and the inner diameter of the axial hole 93 is greater than or equal to the maximum outer diameter of the drive shaft 61, so that the drive shaft 61 can rotate relative to the support 9.
  • the retaining member 3 is movably disposed on the outer side of the driving member 6, and can move between a first position close to the driving member 6 and a second position away from the driving member 6. For example, the retaining member 3 can move back and forth along the radial direction of the driving member 6 to move away from and close to the driving member 6.
  • a notch 812 is provided on one side of the mounting hole 811 of the first housing 81.
  • the side wall of the mounting hole 811 is circular with the notch 812.
  • the retaining member 3 is movably disposed at the position of the notch 812.
  • the support 9 is at least partially supported on the outer periphery of the mounting hole 811 and at least partially covers the retaining member 3.
  • a retaining member limiting hole 92 is provided on the side of the support 9 facing the retaining member 3.
  • the retaining member 3 is at least partially located in the retaining member limiting hole 92.
  • the side of the locking member 3 away from the driving member 6 is provided with an elastic member matching portion 34, and the elastic member matching portion 34 matches with the first elastic member 41.
  • the first elastic member 41 is, for example, a compression spring.
  • the locking member 3 drives the first elastic member 41 to elastically deform. After the external driving force on the locking member 3 is eliminated, the locking member 3 can return from the second position to the first position under the elastic deformation restoring force of the first elastic member 41.
  • the first elastic member 41 is also It can be an elastic structure such as a tension spring, an elastic sheet, etc. arranged at other positions.
  • the retaining member 3 includes a first matching portion 31 and a second matching portion 32.
  • the side surface of the first matching member 2 is provided with a plurality of first grooves 21 distributed along the circumferential direction
  • the side surface of the second matching member 5 is provided with a plurality of second grooves 51 distributed along the circumferential direction.
  • the second matching portion 32 of the retaining member 3 stops the second matching member 5 from rotating, so that the driving member 6 cannot rotate to drive the axial movement of the swing head connecting rod 71, and the end effector is locked in the current position, maintaining the angular stability of the end effector during use.
  • the first matching member 2 When the first matching member 2 is configured to be operated and rotated, the first groove wall 211 of the first groove 21 of the first matching member 2 abuts against the first matching portion 31, and drives the locking member 3 to move from the first position to the direction away from the driving member 6 and enter the second position, so that the locking member 3 is unlocked from the driving member 6, and the end effector can be swung through the driving member 6 and the swing head connecting rod 71 in turn, so as to avoid damage to the locking member 3 when the driving member 6 rotates, and in the process of the driving member 6 rotating, there is no interference and obstruction of the locking member 3, so that the swing of the end effector is smoother.
  • the locking member 3 can be movably arranged on the outside of the driving member 6, so that the internal structure of the swing head mechanism can be arranged more conveniently, and the structure and strength of the driving wheel itself will not be affected.
  • the design space of the locking member 3 is more sufficient, and the size of the locking member 3 can be designed more reasonably to ensure sufficient strength, so that when a large firing force is applied during a thick tissue anastomosis operation, the swing angle can be locked, ensuring the smooth progress of the operation and improving the confidence of the doctor.
  • the design space of the locking member 3 is more sufficient, so that the length of the second matching portion of the locking member 3 can be designed to be relatively longer, and the depth of the second groove 51 of the corresponding second matching member 5 is designed to be relatively deeper, thereby making the locking effect better and more adaptable to operations that require applying a larger firing force.
  • the swing head mechanism controls the swing of the end effector in two steps: in the first step, only the first mating part 2 rotates, the second mating part 5 and the driving part 6 do not rotate, and the locking part 3 is driven to move from the first position to the second position, so that the locking part 3 is disengaged from the second mating part 5; in the second step, the second mating part 5 and the driving part 6 are driven to rotate, and the swing head pull rod 72 is driven to move axially through the driving part 6 and the swing head connecting rod 71.
  • the driving of these two steps can be achieved by the operating member 1.
  • the operating member 1 is configured to drive the first mating part 2 to rotate and drive the locking part 3 from the first position to the second position when rotating the first stroke, and when the operating member 1 continues to rotate the second stroke, the driving member 6 is driven to rotate through the second mating part 5.
  • the swing mechanism further includes a first pin 43 and a second elastic member 42.
  • the operating member 1 is provided with a first mounting hole 12, the first matching member 2 is provided with a second mounting hole 23, and the second
  • the fitting 5 is provided with a third mounting hole 52, and the first pin 43 is sequentially inserted into the first mounting hole 12, the second mounting hole 23 and the third mounting hole 52.
  • the first mounting hole 12 and the second mounting hole 23 are circular holes, and the inner diameters of the first mounting hole 12 and the second mounting hole 23 are both equal to the outer diameters of the first pin 43, so as to match the first pin 43.
  • the third mounting hole 52 is an arc-shaped hole, and the circumferential length of the third mounting hole 52 is greater than the outer diameter of the first pin 43.
  • the second elastic member 42 is connected between the first pin 43 and the driving shaft 61.
  • the second elastic member 42 can adopt an elastic structure such as a tension spring, a torsion spring, a compression spring, an elastic sheet, etc.
  • first pins 43 are shown, and the two first pins 43 are symmetrically arranged relative to the drive shaft 61, but the present application is not limited thereto. In other embodiments, the first pins 43 may also be one, three or more.
  • the number of the first mounting holes 12, the second mounting holes 23 and the third mounting holes 52 respectively corresponds to the number of the first pins 43.
  • the support 9 is also provided with an arc-shaped rotation limiting hole 94, and the first pin 43 is penetrated in the rotation limiting hole 94. Since the position of the support 9 relative to the first housing 81 is fixed, the rotation limiting hole 94 of the support 9 can limit the rotation stroke of the first pin 43.
  • the circumferential length of the rotation limiting hole 94 is greater than the circumferential length of the third mounting hole 52.
  • the locking member 3 In the initial state, the locking member 3 is located at the first position close to the driving member 6.
  • the first matching portion 31 and the second matching portion 32 enter the first slot 21 and the second slot 51 respectively, and the driving member 6 is locked in the current position through the second matching member 5.
  • the first pin shaft 43 is located at a substantially central position of the third mounting hole 52, the first pin shaft 43 is in a third relative position relative to the driving member 6, and the first pin shaft 43 is located at a substantially central position of the rotation limit hole 94.
  • the second elastic member 42 does not undergo elastic deformation.
  • the operating member 1 When the operating member 1 is operated to rotate the first stroke, the operating member 1 drives the first matching member 2 to rotate through the first pin shaft 43, and the first slot wall 211 of the first matching member 2 drives the first matching portion 31 of the locking member 3, so that the locking member 3 moves in a direction away from the driving member 6 and enters the second position, and compresses the first elastic member 41 to undergo elastic deformation.
  • the second matching portion 32 is separated from the second slot 51 and no longer locks the second matching member 5.
  • the first pin shaft 43 moves in the third mounting hole 52 without driving the second mating member 5 to rotate.
  • the first pin shaft 43 reaches a fourth relative position relative to the driving member 6 and drives the second elastic member 42 to undergo elastic deformation.
  • the operating member 1 rotates a first stroke until the first pin 43 reaches one end of the third mounting hole 52.
  • the operating member 1 passes through the first pin 43 drives the first matching member 2 and the second matching member 5 to rotate at the same time, the second matching member 5 drives the driving member 6 to rotate, and the driving member 6 drives the swing head pull rod 72 to move axially through the swing head connecting rod 71, thereby realizing the lateral swing of the end effector.
  • the operating member 1 is released, and under the elastic deformation recovery force of the second elastic member 42, the first pin shaft 43 will return to the substantially central position of the third mounting hole 52, that is, return to the third relative position relative to the driving member 6.
  • the locking member 3 Under the elastic deformation recovery force of the first elastic member 41, the locking member 3 returns from the second position to the first position, and the first matching portion 31 and the second matching portion 32 enter the first groove 21 and the second groove 51 currently facing, respectively, and the driving member 6 is locked in the current position again, maintaining the stability of the current swing angle of the end effector.
  • the angle of the end effector needs to be adjusted, the above two steps can be repeated.
  • the first pin shaft 43 rotates to the end of the rotation limit hole 94, the first pin shaft 43 cannot continue to rotate in the current direction, and the maximum swing angle of the end effector is reached at this time.
  • a first guide portion 813 is provided inside the notch 812, and the blocking member 3 is provided with a second guide portion 33.
  • the first guide portion 813 guides the movement of the blocking member 3 between the first position and the second position by cooperating with the second guide portion 33.
  • the first guide portion 813 is a guide bar or a slider
  • the second guide portion 33 is a guide groove.
  • the first guide portion 813 may be a guide groove
  • the second guide portion 33 may be a guide bar or a slider.
  • the first groove walls 211 of the first groove 21 have a first angle therebetween, and the second groove walls 511 of each second groove 51 have a second angle therebetween, and the first angle is greater than the second angle.
  • the width of the first matching portion 31 of the locking member 3 is greater than the width of the second matching portion 32.
  • the depth of the first groove 21 is less than the depth of the second groove 51, and the end of the first matching portion 31 is closer to the driving shaft 61 than the end of the second matching portion 32.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

L'invention concerne un mécanisme de tête pivotante et une agrafeuse chirurgicale, le mécanisme de tête pivotante s'utilisant avec l'agrafeuse chirurgicale. Le mécanisme de tête pivotante comprend un élément d'entraînement (6) et une tige de traction de tête pivotante (72). L'élément d'entraînement (6) est conçu, lorsqu'il tourne, pour entraîner la tige de traction de tête pivotante (72) à se déplacer axialement le long de l'agrafeuse. Le mécanisme de tête pivotante comprend en outre : un élément d'encliquetage (3) agencé de façon mobile sur le côté externe de l'élément d'entraînement (6), l'élément d'encliquetage (3), lorsqu'il est dans une première position, fait obstruction au mouvement de rotation de l'élément d'entraînement (6), et lorsque l'élément d'encliquetage (3) est dans une seconde position, l'élément d'entraînement (6) peut être entraîné en rotation, la première position étant plus proche par rapport à l'élément d'entraînement (6) que la seconde position ; et un premier élément correspondant (2) conçu pour être actionné pour entraîner l'élément d'encliquetage (3), de la première position à la seconde position. L'élément d'encliquetage (3) du mécanisme de tête pivotante offre un espace de conception plus ample, qui permet de concevoir les dimensions de l'élément d'encliquetage (3) de façon plus rationnelle pour assurer une résistance suffisante. Par conséquent, pendant une chirurgie d'anastomose sur des tissus plus épais qui nécessitent une force de frappe substantielle, cette conception peut également maintenir un verrouillage de l'angle de pivotement, pour assurer ainsi une progression sans encombre de l'intervention chirurgicale et améliorer la confiance d'un médecin.
PCT/CN2023/133119 2022-12-01 2023-11-22 Mécanisme de tête pivotante et agrafeuse chirurgicale WO2024114466A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211531070.0A CN116172635A (zh) 2022-12-01 2022-12-01 摆头机构及外科吻合器
CN202211531070.0 2022-12-01

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WO2024114466A1 true WO2024114466A1 (fr) 2024-06-06

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PCT/CN2023/133119 WO2024114466A1 (fr) 2022-12-01 2023-11-22 Mécanisme de tête pivotante et agrafeuse chirurgicale

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