WO2024032509A1 - 植入物及缝合器 - Google Patents

植入物及缝合器 Download PDF

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Publication number
WO2024032509A1
WO2024032509A1 PCT/CN2023/111292 CN2023111292W WO2024032509A1 WO 2024032509 A1 WO2024032509 A1 WO 2024032509A1 CN 2023111292 W CN2023111292 W CN 2023111292W WO 2024032509 A1 WO2024032509 A1 WO 2024032509A1
Authority
WO
WIPO (PCT)
Prior art keywords
groove
implant
limiting
unit
slot
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2023/111292
Other languages
English (en)
French (fr)
Inventor
胡建成
李斌
蒋冠森
徐胜军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hangzhou Rejoin Mastin Medical Device Co Ltd
Original Assignee
Hangzhou Rejoin Mastin Medical Device Co Ltd
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 Hangzhou Rejoin Mastin Medical Device Co Ltd filed Critical Hangzhou Rejoin Mastin Medical Device Co Ltd
Priority to EP23851730.4A priority Critical patent/EP4570193A4/en
Publication of WO2024032509A1 publication Critical patent/WO2024032509A1/zh
Priority to US19/019,391 priority patent/US20250177000A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3468—Trocars; Puncturing needles for implanting or removing devices, e.g. prostheses, implants, seeds, wires
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/04—Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/04—Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0469—Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/04—Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0491—Sewing machines for surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/04—Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
    • A61B17/06066—Needles, e.g. needle tip configurations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/04—Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
    • A61B17/06066—Needles, e.g. needle tip configurations
    • A61B17/06109—Big needles, either gripped by hand or connectable to a handle
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/04—Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A61B2017/0404—Buttons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/04—Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A61B2017/0409—Instruments for applying suture anchors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/04—Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A61B2017/0417—T-fasteners
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/04—Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A61B2017/0464—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors for soft tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/04—Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
    • A61B17/06066—Needles, e.g. needle tip configurations
    • A61B2017/061—Needles, e.g. needle tip configurations hollow or tubular

Definitions

  • the present disclosure relates to the technical field of suturing devices, and in particular, to an implant and a suturing device.
  • the puncture needle may encounter obstacles during puncture, causing the puncture needle to bend slightly, and the implant located on the puncture needle contacts the side wall of the bent puncture needle. The implant will then be squeezed, causing the implant to break.
  • the purpose of this disclosure is to provide an implant and a suturing device to alleviate the technical problem of the existing implant being squeezed after the puncture needle bends, causing the implant to break.
  • the present disclosure provides an implant, with a first chamfer between the front end surface of the implant and the circumferential side wall of the implant; the rear end surface of the implant and the implant There is a second chamfer between the circumferential side walls.
  • the first chamfer and the second chamfer can play a role in avoiding the bent inner wall of the puncture needle, preventing the puncture needle from contacting the end of the implant immediately after a slight bend, causing the implant to break. .
  • the bottom surface of the implant is planar.
  • the bottom surface of the implant can form a gap with the inner wall of the circular hole inside the puncture needle, which can prevent the inner wall of the bent puncture needle from immediately contacting the implant, causing the implant to break.
  • the value range of the first chamfer and the second chamfer may be 8-10°. The larger the angle of the first chamfer and the second chamfer, the better the avoidance effect, but if the angle is too large, the strength of the implant will decrease.
  • the present disclosure provides a suturing device, which includes: a puncture needle and a plurality of the above-mentioned implants, the implants are located on the puncture needle; the puncture needle is provided with an axially extending channel, and a plurality of the above-mentioned implants are provided on the puncture needle.
  • the implant can be fired from the suturing device after passing through the channel in sequence; the inner wall of the channel is provided with a plurality of limiting structures protruding inwardly, A plurality of limiting structures are arranged circumferentially.
  • the limiting structures can at least block the second fired implant, so that the second implant can be fired out of the suture.
  • the force exerted by the device increases.
  • the limiting structure is located on the firing path of the implant.
  • the setting of the limiting structure can at least block the second implant.
  • the second implant Under the blocking effect of multiple limiting structures in the circumferential direction, the second implant The friction force on the inserted object increases, making it more difficult for the second implant to pass through the position of the limiting structure, and a greater external force needs to be applied to the second implant to make the second implant pass through the limiting structure. , thereby reducing the risk of the first implant bringing out the second implant.
  • the limiting structure includes a guide bevel arranged obliquely relative to the inner wall of the channel, the implant is in sliding contact with the guide bevel, and the guide bevel is used to guide the implant across The limiting structure.
  • the pressure of the limiting structure on the implant gradually increases, and the friction force on the implant gradually increases, preventing the limiting structure from completely blocking the second implant.
  • the limiting structure can block all of the implants. All implants, especially the first implant, can be blocked by the limiting structure, thereby preventing the first implant from slipping out of the puncture needle. All implants can be exactly the same shape, making implant preparation more convenient and more versatile.
  • the first implant is provided with an avoidance structure to avoid the limiting structure, so that the first implant is faster than the second implant when passing through the limiting structure.
  • the friction force experienced by the implant when passing through the limiting structure is small, which facilitates the firing of the first implant.
  • the puncture needle includes a hollow hole, and a notch connected to the hollow hole is provided on the circumferential side wall of the puncture needle; in the axial direction, the front end of the notch is connected to the front end of the puncture needle.
  • the tip end faces are connected, the notch and the hollow hole surround a groove structure, and the groove structure forms the channel; the limiting structure includes a protrusion located on the inner surface of the groove structure.
  • the two groove walls of the groove structure can undergo slight deformation, thereby increasing the opening width of the groove structure.
  • the groove walls drive the protrusions to press against the side walls of the implant, thereby increasing friction.
  • the setting of the groove structure can be used Its own deformation makes it easier to achieve the blocking effect on the second implant, and the structure is simpler.
  • protrusions are provided on two opposite side walls of the groove structure, and the two protrusions are arranged oppositely, so that the implant is evenly stressed.
  • At least a portion of the implant is located in the hollow hole.
  • the implant When the portion of the implant located in the hollow hole abuts against the opening of the groove structure, the implant There is a deformation gap between the bottom surface of the groove structure and the bottom surface of the groove structure, thereby providing space for the puncture needle to bend.
  • the deformation gap ranges from 0.05mm to 0.4mm. The larger the value of the gap, the less likely it is for the implant to squeeze against the puncture needle, but if the value is too large, the implant will be too small or the puncture needle will be too thick.
  • the implant includes a first part and a second part connected in sequence from top to bottom along the depth direction of the groove structure; the side wall of the first part has a suspension structure, and the first part passes through the The suspension structure is suspended on the notch so that there is a gap between the bottom of the second part and the inner wall of the hollow hole; the second part is located in the hollow hole, and the widest position of the second part
  • the width of the opening is greater than the width of the opening, so that the implant can have a large deformation space while hanging on the puncture needle.
  • the stapler includes a fixing part and a firing mechanism
  • the puncture needle is connected to the fixing part
  • the firing mechanism is axially movable relative to the fixing part
  • the firing mechanism is used to Fire the implant forward.
  • the firing mechanism includes a push pin, a push button, a connecting arm and a linkage part, and the push button, connecting arm and linkage part are arranged in sequence from the front end of the suturing device toward the rear end;
  • the front end of the push needle is located in the hollow hole of the puncture needle;
  • the push button is slidingly connected to the fixed part;
  • the front end of the connecting arm is connected to the push button, and the rear end of the connecting arm is connected to the linkage part;
  • the linkage part is connected with the rear end of the push pin.
  • a spring is provided between the fixed part and the linkage part for returning the push button.
  • the stapler further includes a depth-limiting tube and a locking mechanism.
  • the depth-limiting tube is sleeved on the outside of the puncture needle.
  • the front end of the depth-limiting tube is the depth-limiting end;
  • the position of the depth tube in the axial direction is adjustable;
  • the locking mechanism is used to lock the depth-limiting tube so that the position of the depth-limiting tube is fixed relative to the puncture needle.
  • the locking mechanism includes a control arm.
  • the control arm includes a first connecting arm, a pressing arm and a second connecting arm that are sequentially connected in the axial direction.
  • One end of the first connecting arm is connected to the depth limiting pipe. connection, the other end is connected to one end of the pressing arm, one end of the second connecting arm is connected to the other end of the pressing arm, the other end of the second connecting arm is slidingly connected to the fixed part;
  • the pressing arm is connected to the fixed part There is a gap between the two parts so that the pressing arm can move toward the fixed part;
  • the pressing arm is provided with a gear pin;
  • the locking mechanism also includes a plurality of limiting grooves on the housing, a plurality of The limiting grooves are arranged in sequence along the axial direction; the pressure arm has a locked state and an unlocked state.
  • the gear pin In the locked state, the gear pin is located in the limiting groove, and the limiting groove is used to prevent the The pressing arm moves in the axial direction. In the unlocked state, the gear pin is pressed out of the limiting groove, and the pressing arm can move in the axial direction. By pressing and sliding the pressure arm, the gear position can be changed, and the control is simple.
  • the fixed portion is provided with a first guide groove extending in the axial direction
  • the first connecting arm is provided with a sliding contact portion, and the sliding contact portion abuts against the first guide groove.
  • the first guide groove is used to guide the first connecting arm to slide along the axial direction of the puncture needle, thereby preventing the first connecting arm from rotating and making the first connecting arm always slide in the axial direction.
  • the stapler includes a housing and a firing mechanism, the firing mechanism is used to fire the implant to the front end; a gear groove is provided on the inner wall of the housing; and the firing mechanism is provided with a Elastic fork, the fixed end of the elastic fork is fixedly connected to the firing mechanism, and the free end of the elastic fork extends into the gear slot from the notch of the gear slot.
  • the gear slot is arranged on the casing, which has a simple structure and saves costs.
  • the number of implants in the stapler is two
  • the gear slot includes a first slot unit and a second slot unit; along the rear end toward the front end, the first slot unit It includes a first starting end and a first limiting end located at its opposite ends; the second slot unit includes a second starting end and a second limiting end located at its opposite ends; the gear slot also includes a first relief slot.
  • the bottom surface of the first relief groove is lower than the bottom surface of the first groove unit; one end of the first relief groove is located on the bottom surface of the first limiting end, and faces backward from the first limiting end.
  • the end extends and passes through the side wall of the first slot unit to communicate with the second slot unit, and the extension direction of the first relief slot forms an angle with the extension direction of the first slot unit;
  • the second slot The bottom surface of the unit is lower than the bottom surface of the first relief groove;
  • the gear groove also includes a second relief groove, and the bottom surface of the second relief groove is lower than the bottom surface of the second groove unit;
  • the second relief groove One end of the slot is located on the bottom surface of the second limiting end, and extends from the second limiting end toward the rear end and is connected to the first starting end; in the initial state, the free end is located at the first end of the first slot unit.
  • the free end has a tendency to move toward the bottom surface of the gear slot, so that the free end is always in contact with the bottom surface of the gear slot.
  • the doctor needs to pay attention to and confirm the firing status and number of firings of the implant during the operation.
  • the gear slot better limits the number and sequence of firings of the implant.
  • the number of implants in the stapler is two
  • the gear slot includes a first slot unit and a second slot unit; along the rear end toward the front end, the first slot unit It includes a first starting end and a first limiting end located at its opposite ends; the second slot unit includes a second starting end and a second limiting end located at its opposite ends; the first slot unit includes a first slot wall and a second groove wall, the extension direction of the first groove wall is parallel to the axial direction, and the width between the second groove wall and the first groove wall gradually decreases along the rear end direction and the front end direction; the second groove wall gradually decreases.
  • the slot unit is located on the side of the second slot wall of the first slot unit; there is a first recessed slot between the first slot unit and the second slot unit, and the front end of the first retracted slot is connected to the first slot.
  • the first limiting end of the unit is connected through the first transverse groove, and the rear end of the first relief groove and the second starting end of the second groove unit are connected through the second transverse groove; the side of the second groove unit
  • the side is also provided with a second relief groove, and the second groove unit is located between the first relief groove and the second relief groove; the third relief groove
  • the front end of the second relief groove and the second limiting end are connected through the third transverse groove, the rear end of the second relief groove is connected with the second groove wall, and the bottom surface of the rear end of the second relief groove is higher than the first
  • the bottom surface of the first starting end of the slot unit thereby forming a lower ladder structure at the connection between the second recessed slot and the first slot unit; in the initial state, the free end is located in
  • the outer shell is made of a transparent material, which facilitates the operator to control the suturing device and allows the operator to better observe the puncture process.
  • Figure 1 is a schematic diagram of an implant provided by an embodiment of the present disclosure
  • Figure 2 is a schematic diagram of a suturing device provided by an embodiment of the present disclosure
  • Figure 3 is a partial enlarged view of position A in Figure 2;
  • Figure 4 is a schematic cross-sectional view of the puncture needle of the suturing device provided by an embodiment of the present disclosure
  • Figure 5 is a schematic diagram of the suturing device provided by the embodiment of the present disclosure with the upper half shell removed;
  • Figure 6 is a front view of a suturing device provided by an embodiment of the present disclosure.
  • Figure 7 is a cross-sectional view along the A-A direction in Figure 6;
  • Figure 8 is a cross-sectional view along the B-B direction in Figure 6;
  • Figure 9 is a schematic diagram of a gear slot of the suturing device provided by an embodiment of the present disclosure.
  • Figure 10 is the movement path of the free end in the gear slot in Figure 9;
  • Figure 11 is a schematic diagram of another gear slot of the suturing device provided by an embodiment of the present disclosure.
  • Figure 12 is the movement path of the free end in the gear slot in Figure 11.
  • Icon 100-Puncture needle; 110-channel; 120-limiting structure; 121-guide bevel; 210-first implant; 220-second implant; 230-first part; 240-second part ; 310-deformation clearance; 320-first chamfer; 330-second chamfer; 400-fixed part; 510-push pin; 520-push button; 530-connecting arm; 540-linkage part; 550-spring; 610 -Depth limiting pipe; 621-first connecting arm; 622-pressing arm; 6221-gear pin; 623-second connecting arm; 630-limiting groove; 640-first guide groove; 650-sliding contact portion; 660-button; 710-first vertical lever; 720-first vertical lever; 730-second vertical lever; 740-second vertical rod; 750-limiting buckle; 760-free end; 810-first slot unit; 811-first starting end; 812-first limiting end; 813-second slot wall; 820-th A
  • first chamfer 320 between the front end surface of the implant and the circumferential side wall of the implant; the rear end surface of the implant and the circumferential side wall of the implant
  • second chamfer 330 between the circumferential side walls.
  • the first chamfer 320 and the second chamfer 330 can play a role in avoiding the curved inner wall of the puncture needle, and prevent the puncture needle 100 from contacting the end of the implant immediately after a slight bend, causing the implant to break.
  • the implant includes a first part 230 and a second part 240 connected in sequence from top to bottom along the depth direction of the groove structure; the side wall of the first part 230 has a suspension structure, and the first part 230 passes through the suspension structure.
  • the structure is suspended on the gap, so that there is a gap between the bottom of the second part 240 and the inner wall of the hollow hole; the second part 240 is located in the hollow hole, and the widest part of the second part 240 The width at the location is greater than the width of the opening.
  • the implant can have a structure that is narrow at the top and wide at the bottom.
  • the cross-section shape of the first part 230 of the implant can be approximately rectangular, and a suspension structure is provided near the top surface of the implant.
  • the suspension structure can be in two directions.
  • the convex edge protrudes from the side, and the convex edge hangs outside the gap; or, the cross section of the first part is an inverted trapezoid, wide at the top and narrow at the bottom, and the width of the widest part of the first part is greater than the width of the gap, so that the implant cannot be attached Drop, avoiding contact between the bottom of the implant and the bottom of the hollow hole.
  • the first part 230 is slidably connected to the notch position of the puncture needle to prevent the implant from rotating and dislocating during the sliding process.
  • the cross-sectional shape of the second part 240 can be approximately an incomplete spherical structure, and the bottom surface of the second part 240 can be Processed into a flat surface, it is used to increase the distance from the bottom surface of the circular hollow hole of the puncture needle to prevent the puncture needle 100 from contacting the bottom surface of the implant immediately after slight bending, causing the implant to break.
  • the value range of the first chamfer 320 and the second chamfer 330 is 8-10°. The larger the angle of the first chamfer and the second chamfer, the better the avoidance effect, but if the angle is too large, the strength of the implant will decrease.
  • the suturing device provided by the embodiment of the present disclosure includes: a puncture needle 100 and a plurality of implants mentioned above.
  • the number of implants can be two, three or even more. In this embodiment
  • the number of implants is two.
  • the implant is located on the puncture needle 100; the puncture needle 100 is provided with an axially extending channel 110, and the implants can be arranged in the channel 110.
  • a plurality of the implants can be arranged in the channel 110.
  • the incoming object can be fired from the suturing device after passing through the channel 110 in sequence.
  • the inner wall of the channel 110 is provided with a limiting structure 120 protruding inward.
  • the limiting structure 120 can at least block the second fired implant, so that the second The force applied as the implant 220 is fired out of the stapler increases.
  • the limiting structure 120 is located on the firing path of the implant.
  • the setting of the limiting structure 120 can at least block the second implant 220. Under the blocking effect of the limiting structure 120, the second implant The friction force experienced by the implant 220 increases, and it is more difficult for the second implant 220 to pass through the position of the limiting structure 120, and a greater external force needs to be applied to the second implant 220 to make the second implant 220 passes through the limiting structure 120, thereby reducing the risk that the first implant 210 will bring out the second implant 220.
  • the limiting structure 120 plays a blocking role rather than a blocking effect.
  • the second implant 220 can still pass through the limiting structure 120, but compared to the fact that there is no limiting structure in the channel 110 It is relatively difficult to pass the position of 120, and the limiting structure 120 can be a protrusion or a boss.
  • the number of the limiting structures 120 is multiple. In the circumferential direction, the number of the limiting structures 120 can be two, three or more. When the implant passes through the location of the limiting structures 120, multiple limiting structures are in sliding contact with the circumferential side walls of the implant at the same time. , increase the friction on the implant and make the blocking effect better.
  • the number of the limiting structures 120 can be an even number, and two of them are arranged opposite to each other.
  • the limiting structure 120 includes a guide bevel 121 that is inclined relative to the inner wall of the channel 110.
  • the implant is in sliding contact with the guide bevel 121.
  • the guide bevel 121 is used to guide the implant across the The limiting structure 120 is described.
  • the limiting structure 120 may be wedge-shaped or hemispherical.
  • the rear edge of the guide slope 121 smoothly transitions to the inner wall of the channel 110. From the back to the front, the guide slope 121 gradually tilts toward the centerline of the channel 110.
  • the guide slope 121 may be a plane or a curved surface. .
  • the implant moves forward from the rear side of the limiting structure 120 and first contacts the guide slope 121. Under the action of the guide slope 121, the pressure of the limiting structure 120 on the implant gradually increases, and the friction force on the implant Gradually increase to prevent the limiting structure 120 from completely blocking the second implant 220 .
  • the limiting structure 120 can block all the implants. That is to say, in this solution, all the implants, especially the first implant, Incoming objects 210 can be limited by the structure 120 Block, thereby preventing the first implant 210 from sliding out of the puncture needle 100. All implants can be exactly the same shape, making implant preparation more convenient and more versatile.
  • the first implant is provided with an avoidance structure to avoid the limiting structure 120, so that the first implant can be moved more easily relative to the second implant. pass through the limiting structure 120 .
  • the friction force generated by the limiting structure 120 on the first implant 210 is relatively small, so that the blocking effect on the first implant is relatively small, and the first implant 210 can be
  • Corresponding avoidance grooves are provided on the top of the body. The avoidance grooves connect the front end and the rear end of the first implant 210 in the axial direction. When the first implant 210 passes the position of the limiting structure 120, the limiting structure 120 moves from the avoidance groove.
  • the outer diameter of the first implant 210 can be set to be smaller than the outer diameter of the second implant 220, thereby reducing the contact area between the limiting structure 120 and the first implant 210 to facilitate the first implant 210. Firing of an implant.
  • the puncture needle 100 includes a hollow hole, and a notch connected to the hollow hole is provided on the circumferential side wall of the puncture needle 100; in the axial direction, the front end of the notch is connected to the tip end surface of the puncture needle 100.
  • the notch and the hollow hole surround a groove structure, and the groove structure forms the channel 110; the limiting structure 120 includes a protrusion located on the inner surface of the groove structure.
  • the implant can be located in the groove structure.
  • the two groove walls of the groove structure can undergo slight deformation under the expansion of the implant, thereby causing the groove structure to The width of the opening increases, and the groove wall drives the protrusion to press against the side wall of the implant, thereby increasing the friction.
  • the groove structure can use its own deformation to more conveniently achieve the blocking effect on the second implant. , the structure is simpler.
  • Protrusions may be provided on two opposite side walls of the groove structure, and the two protrusions are arranged oppositely, and both protrusions are hemispherical structures.
  • At least a part of the implant is located in the hollow hole.
  • the part of the implant located in the hollow hole abuts against the opening of the groove structure, the There is a deformation gap 310 between the bottom surface of the implant and the bottom surface of the groove structure.
  • the operator points the bevel of the tip of the puncture needle 100 upward, and then inserts the needle downward.
  • the puncture needle 100 is blocked, a slight bend may occur, and the bent channel 110 Gradually approach the bottom surface of the implant, because a gap is reserved between the implant and the bottom surface of the groove structure, which can prevent the inner wall of the bent puncture needle 100 from immediately contacting the implant, causing the implant to break.
  • the deformation gap 310 may range from 0.05mm to 0.4mm, and in this embodiment, 0.1mm to 0.2mm is used.
  • the stapler includes a fixing part 400 and a firing mechanism.
  • the puncture needle 100 is connected to the fixing part 400.
  • the firing mechanism can move axially relative to the fixing part 400.
  • the firing mechanism is used for Fire the implant forward.
  • the suturing device also includes a shell 900.
  • a part of the fixing part 400 is located in the shell 900 and is fixedly connected to the shell 900.
  • the puncture needle 100, the fixing part 400 and the shell 900 are relatively fixed.
  • the firing structure can push the implant on the puncture needle 100 forward through the pushing needle 510 .
  • the firing mechanism includes a push pin 510, a push button 520, a connecting arm 530 and a linkage part 540. From the front end of the suturing device toward the rear end, the push button 520 , the connecting arm 530 and the linkage part 540 are arranged in sequence. The front end of the push needle 510 is located in the hollow hole of the puncture needle 100 .
  • the push button 520 is slidingly connected to the fixed part 400, and the push button 520 can move in the front and rear direction; the front end of the connecting arm 530 is connected to the push button 520, and the rear end of the connecting arm is connected to the linkage part 540; so The linkage part 540 is connected to the rear end of the push pin 510 .
  • the push button 520, the connecting arm 530, the linkage part 540 and the push pin 510 are fixedly connected and have the same motion state.
  • the linkage part 540 can drive the push needle 510 to move forward, thereby pushing the implant in the channel 110 forward until the puncture needle 100 is pushed out.
  • the connecting arm 530 and the linkage part 540 drives the push needle movement, so that the push button can be set at a position convenient for the operator to control, instead of having to be set at the rear end of the push needle, thus making the structure of the suture device more in line with human mechanics.
  • a spring 550 can be provided between the fixed part 400 and the linkage part 540. After the push button 520 moves forward, the linkage part 540 squeezes the spring 550. When the external force on the push button 520 is removed, the spring 550 is used to drive the push button 520. The linkage part 540 moves in a direction away from the fixing part 400, thereby resetting the push button 520.
  • the suturing device further includes a depth-limiting tube 610 and a locking mechanism.
  • the depth-limiting tube 610 is sleeved on the outside of the puncture needle 100.
  • the front end of the depth-limiting tube 610 is the depth-limiting end; the depth-limiting tube 610 is sleeved on the outside of the puncture needle 100.
  • the position of 610 in the axial direction is adjustable; the locking mechanism is used to lock the depth-limiting tube 610 so that the position of the depth-limiting tube 610 is fixed relative to the puncture needle 100 .
  • the depth-limiting tube 610 is sleeved on the outside of the puncture needle 100.
  • the front end of the depth-limiting tube 610 is the limiting end.
  • the length of the puncture needle 100 exposed to the outside can be changed.
  • the thickness of the tissue to be sutured can be measured first, and then the position of the depth-limiting tube 610 is adjusted and locked so that the length of the portion of the puncture needle 100 exposed at the front end of the depth-limiting tube 610 matches the thickness of the tissue to be sutured.
  • the limiting end is in contact with the tissue surface.
  • the locking mechanism includes a control arm, and the control arm includes a first connecting arm 621, a pressing arm 622, and a second connecting arm 623 that are sequentially connected in the axial direction.
  • the first connecting arm 621, the second connecting arm 623, and the pressing arm 622 They are all set at an angle, and the control arms are roughly in the shape of an inverted "U".
  • the lower end of the first connecting arm 621 is fixedly connected to the depth limiting pipe 610, the upper end is connected to the front end of the pressure arm 622, the upper end of the second connecting arm 623 is connected to the rear end of the pressure arm 622, and the second connecting arm 623 is connected to the front end of the pressure arm 622.
  • the lower end of 623 is in contact with the fixing part 400 and can slide relative to the fixing part 400 in the axial direction.
  • a gear pin 6221 is provided on the pressing arm 622;
  • the locking mechanism It also includes a plurality of limiting grooves 630 on the housing 900, and the plurality of limiting grooves 630 are arranged in sequence along the axial direction.
  • the pressure arm 622 has a locked state and an unlocked state. In the locked state, the gear pin 6221 is located in a certain limiting groove 630.
  • the limiting groove 630 is used to prevent the pressing arm 622 from moving along the axis.
  • the user By pushing the pressing arm 622 toward the fixed part 400, the user can deform the pressing arm 622, the gear pin 6221 is pressed out of the limiting groove 630, and the pressing arm 622 changes to an unlocked state.
  • the pressing arm 622 can move along the axial direction. After the external force on the pressing arm 622 is removed, the pressing arm 622 returns to its original state, and the gear pin 6221 once again enters the limiting groove 630 corresponding to its position.
  • the housing 900 is provided with a chute corresponding to the position of the pressing arm 622.
  • the chute connects the inside and outside of the housing 900.
  • the pressing arm 622 is connected with a button 660.
  • the button 660 slides along the chute. By pressing the button 660 and pushing and pulling the button 660, the button 660 can be pressed. Change the position of the depth limit and lock it.
  • the fixing part 400 is provided with a first guide groove 640 extending in the axial direction, and the first connecting arm 621 is provided with a sliding contact part 650, and the sliding contact part 650 is in contact with the first guide groove 640.
  • the first guide groove 640 is used to guide the first connecting arm 621 to slide along the axial direction of the puncture needle 100 .
  • the first guide groove 640 can be used to support the first connecting arm 621.
  • the first guide groove 640 can be formed on the fixed part 400.
  • the outer edge extends toward the front end, and the sliding contact portion 650 can be a foot extending downward from the bottom end of the first connecting arm 621 , and the foot contacts the outer edge.
  • the stapler includes a shell 900 and a firing mechanism.
  • the firing mechanism is used to fire the implant to the front end.
  • the inner wall of the housing 900 is provided with a gear slot; the firing mechanism is provided with an elastic swing bar.
  • the fixed end of the elastic swing rod is fixedly connected to the firing mechanism, and the free end 760 of the elastic swing rod extends into the gear slot from the notch of the gear slot.
  • the firing mechanism is located on the side facing the notch of the gear slot.
  • the firing mechanism moves forward and backward along the axial direction.
  • the elastic swing rod can move together with the firing mechanism.
  • the elastic swing rod can be an elastic metal rod.
  • One end of the elastic swing rod is connected to The firing mechanism is fixed, and the other end is a free end 760.
  • the free end 760 extends into the gear slot.
  • the elastic swing rod can swing in a plane perpendicular to the gear slot opening, and can move toward or away from the gear slot opening.
  • the bottom surface of the gear slot moves, so that the free end 760 can move along the extension path of the gear slot, thereby facilitating the auxiliary operator to control the gear of the firing mechanism.
  • the elastic swing bar is connected to the linkage part 540.
  • the elastic swing bar includes a first vertical bar 710, a first vertical bar 720, a second vertical bar 730 and a second vertical bar 740 connected in sequence.
  • the first longitudinal bar 710 and The second vertical rods 730 are parallel to the axial direction, the rear end of the first vertical rod 710 is connected to the upper end of the first vertical rod 720 , and the lower end of the first vertical rod 720 is connected to the second vertical rod 730
  • the rear end of the second vertical rod 740 is connected to the front end of the second vertical rod 730 , and the lower end of the second vertical rod 740 is the free end 760 .
  • the first vertical rod 720 is located on the side of the linkage portion 540 facing away from the gear slot, the first vertical rod 720 is located on the rear end side of the linkage portion 540, and the second vertical rod 740 extends into into the gear slot.
  • the first longitudinal rod 710 and the first vertical rod 720 are fixed to the linkage member through a limit buckle 750.
  • the limit buckle 750 is used to prevent the first longitudinal rod 710 and the first vertical rod 720 from opposing the linkage member respectively. swing.
  • a limit buckle 750 can also be provided on the side of the linkage portion 540 facing the gear slot. The limit buckle 750 is close to the end of the second longitudinal rod 730 away from the second vertical rod 740 to limit the position of the second longitudinal rod 730 .
  • the second longitudinal rod 730 can swing using the limiting buckle 750 as a fulcrum.
  • an escape groove is also provided on the side of the limiting portion facing the gear slot, thereby forming enough space for swinging above the second longitudinal rod 730.
  • the second longitudinal rod 730 can be in a plane perpendicular to the gear slot opening. By swinging, you can also move closer to or away from the gear slot along the direction of the gear slot opening.
  • the gear slot includes a first slot unit 810 and a second slot unit 830.
  • the first slot unit 810 includes a first starting end 811 and a first limiting end 812 located at its opposite ends
  • the second slot unit 830 includes a second starting end located at its opposite ends 831 and the second limiting end 832
  • the gear groove also includes a first relief groove 820, the bottom surface of the first relief groove 820 is lower than the bottom surface of the first groove unit 810
  • the first relief groove 820 One end is located on the bottom surface of the first limiting end 812, and extends from the first limiting end 812 toward the rear end and passes through the side wall of the first slot unit 810 to communicate with the second slot unit 830,
  • the extending direction of the first recessed groove 820 forms an angle with the extending direction of the first groove unit 810;
  • the bottom surface of the second groove unit 830 is lower than
  • the free end 760 is located at the first starting end 811 of the first slot unit 810, and under the elastic force of the elastic swing rod, the lower end surface of the free end 760 abuts the bottom surface of the first slot unit 810, pushing forward.
  • the button 520 can drive the linkage part 540 to move forward, and the free end 760 moves along the first groove unit 810 to the first limiting end 812. The free end 760 is blocked, and the operator knows that the first implant 210 has been fired.
  • the end of the first retraction groove 820 is located at the first limiting end 812, and the bottom surface of the first retraction groove 820 is lower than the bottom surface of the first groove unit 810, that is to say, when the first plant is fired.
  • the lower end surface of the free end 760 will perform a downward step action under the elastic force of the elastic swing rod, and the free end 760 will enter the first relief groove 820. inside and abutting the bottom surface of the first relief groove 820 .
  • the free end 760 then performs a step-down movement. It enters the second slot unit 830, and the lower end surface of the free end 760 abuts the bottom surface of the second slot unit 830. Pushing the push button 520 forward again allows the free end 760 to move to the second limiting end 832, thereby completing the firing of the second implant 220.
  • the gear groove also includes a second relief groove 870, the bottom surface of the second relief groove 870 is lower than the bottom surface of the second groove unit 830; one end of the second relief groove 870 is located at the second limiting position.
  • the bottom surface of the end 832 extends from the second limiting end 832 toward the rear end and is connected with the first starting end 811 .
  • the free end 760 moves to the second limiting end 832, the free end 760 also transitions into the second relief groove 870, and the push button 520 is pushed backward, and the free end 760 returns under the guidance of the groove wall of the second relief groove 870. to the first starting end 811.
  • the bottom surface of the first starting end 811 may be lower than the bottom surface between the first starting end 811 and the first limiting end 812.
  • the bottom surface of the first starting end 811 of the first slot unit 810 may be a
  • the middle position of the first slot unit 810 can be a flat surface as the rising slope, thereby facilitating the free end 760 pushed out from the second retreat slot 870 to enter the first starting end 811 again.
  • a rising slope can be provided on the bottom surface of the second groove unit 830.
  • the rising slope is located behind the second limiting end 832.
  • the free end 760 first performs an upward movement and then falls into the second retreat groove 870.
  • the setting of the rising slope It can facilitate the installation of the lower ladder structure at the transition point of each groove.
  • the free end 760 is mainly guided by the groove walls of the first groove unit 810, the first recessed groove 820, the second groove unit 830 and the second recessed groove 870, thereby guiding the free end 760 in each direction. Movement in the tank.
  • the number of implants in the stapler is two
  • the gear slot includes a first slot unit 810 and a second slot unit 830;
  • the first slot unit 810 includes a first starting end 811 and a first limiting end 812 located at its opposite ends;
  • the second slot unit 830 includes a second starting end 831 located at its opposite ends.
  • the first groove unit 810 includes a first groove wall and a second groove wall 813, the extension direction of the first groove wall is parallel to the axial direction, along the rear end direction and the front end direction, the The width between the second groove wall 813 and the first groove wall gradually decreases;
  • the second groove unit 830 is located on the side of the second groove wall 813 of the first groove unit 810; the first groove unit 810 There is a first relief groove 820 between the second groove unit 830 and the front end of the first relief groove 820 and the first limiting end 812 of the first groove unit 810 connected through the first transverse groove 840.
  • the rear end of the recessed groove 820 is connected with the second starting end 831 of the second groove unit 830 through the second transverse groove 850; a second recessed groove 870 is also provided on the side of the second groove unit 830.
  • the second groove unit 830 is located between the first relief groove 820 and the second relief groove 870; the second relief groove
  • the front end of 870 and the second limiting end 832 are connected through the third transverse groove 860, the rear end of the second relief groove 870 is connected with the second groove wall 813, and the bottom surface of the rear end of the second relief groove 870 is higher than the
  • the bottom surface of the first starting end 811 of the first groove unit 810 forms a lower ladder structure at the connection between the second relief groove 870 and the first groove unit 810; in the initial state, the free end 760 is located in the first groove unit 810 inside, and located behind the rear end opening of the second relief groove 870 and in contact with the second groove wall 813 .
  • the free end 760 In the initial state, the free end 760 is in contact with the second groove wall 813 of the first groove unit 810, and the push button 520 is pushed forward. The free end 760 moves forward and is always in contact with the second groove wall 813. 760 swings and stores part of the elastic potential energy. When moving to the first limiting end 812, driven by elastic potential energy, the free end 760 swings into the first relief groove 820 through the first transverse groove 840, and the free end 760 abuts in the first relief groove 820 on the tank wall away from the first tank unit 810. Push the push button 520 backward, and the free end 760 moves backward in the first relief groove 820.
  • the free end 760 swings into the second groove under the elastic action of the elastic swing rod itself. inside the unit 830 and abuts against the side wall of the second slot unit 830 away from the first slot unit 810. Push the push button 520 forward, and the free end 760 moves to the second limiting end 832.
  • the second implant 220 is fired, and at the same time, the free end 760 swings into the second retraction groove 870 through the third transverse groove 860, and the push button 520 is pushed backward, and the free end 760 can slide backward in the second retraction groove 870 and return to the first starting end 811 .
  • the material of the housing 900 can be a transparent material.
  • the position of the free end 760 can be clearly seen through the housing 900, which facilitates the operator to control the suturing device and can better observe the puncture process.
  • the shell 900 can be spliced by an upper half shell and a lower half shell, and the lower half shell and the fixing part 400 can be fixedly connected through the threaded member 910 .

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Abstract

一种植入物(210,220)及缝合器，涉及缝合器的技术领域，植入物(210,220)的前端端面与植入物(210,220)的周向侧壁之间具有第一倒角(320)；植入物(210,220)的后端端面与植入物(210,220)的周向侧壁之间具有第二倒角(330)。第一倒角(320)和第二倒角(330)可以起到避让穿刺针(100)弯曲的内壁的作用，避免穿刺针(100)发生微小弯曲后立刻与植入物(210,220)的端部抵接，导致植入物断裂。

Description

植入物及缝合器
相关申请的交叉引用
本公开要求于2022年08月11日提交中国专利局的申请号为202210964132.0、名称为“植入物及缝合器”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及缝合器技术领域，尤其是涉及一种植入物及缝合器。
背景技术
在利用缝合器对组织进行缝合的过程中，穿刺针在进行穿刺时可能会遇到阻碍，造成穿刺针发生微小的弯曲，而位于穿刺针上的植入物与弯曲的穿刺针的侧壁接触后会挤压植入物，导致植入物断裂。
发明内容
本公开的目的在于提供一种植入物及缝合器，以缓解现有的植入物在穿刺针发生弯曲后被挤压，导致植入物断裂的技术问题。
本公开提供一种植入物，所述植入物的前端端面与所述植入物的周向侧壁之间具有第一倒角；所述植入物的后端端面与所述植入物的周向侧壁之间具有第二倒角。穿刺针发生弯曲后，第一倒角和第二倒角可以起到避让穿刺针弯曲的内壁的作用，避免穿刺针发生微小弯曲后立刻与植入物的端部抵接，导致植入物断裂。
在一些实施方式中，所述植入物的底面为平面。植入物的底面可以与穿刺针内部的圆形孔的内壁形成间隙，可以避免弯曲后的穿刺针的内壁立刻与植入物接触，导致植入物断裂。
在一些实施方式中，所述第一倒角和第二倒角的取值范围可以为8-10°。第一倒角和第二倒角的角度越大避让效果越好，但是角度如果过大植入物强度降低。
本公开提供一种缝合器，包括：穿刺针和多个上述的植入物，所述植入物位于所述穿刺针上；所述穿刺针上设置有沿轴向延伸的通道，多个所述植入物能够依次经过所述通道后从所述缝合器内被击发；所述通道的内壁上设置有向内侧凸出的多个限位结构， 多个限位结构沿周向排布，所述限位结构至少能够对第二个被击发的所述植入物起到阻滞作用，以使第二个植入物被击发出所述缝合器时所施加的力增加。限位结构位于植入物的击发路径上，限位结构的设置至少能够对第二个植入物起到阻滞作用，在周向上多个限位结构的阻滞作用下，第二个植入物受到的摩擦力增大，第二个植入物更难通过设置限位结构的位置，需要对第二个植入物施加更大的外力才能使第二个植入物通过限位结构，从而降低了第一个植入物将第二个植入物带出的风险。
在一些实施方式中，所述限位结构包括相对于所述通道内壁倾斜设置的导向斜面，所述植入物与所述导向斜面滑动接触，所述导向斜面用于引导所述植入物越过所述限位结构。在导向斜面的作用下，限位结构对植入物的压力逐渐增加，植入物受到的摩擦力逐渐增加，避免限位结构完全阻挡第二个植入物。
在一些实施方式中，所述限位结构能够对所有所述植入物起到阻滞作用。所有的植入物，尤其是第一个植入物，能够被限位结构阻滞，从而避免第一个植入物以外从穿刺针内滑出。所有的植入物的形状可以完全相同，植入物的制备更加方便，通用性更强。
在一些实施方式中，第一个所述植入物上设置有避让所述限位结构的避让结构，以使第一个所述植入物在通过所述限位结构时比第二个所述植入物通过所述限位结构时受到的摩擦力小，方便第一个植入物的击发。
在一些实施方式中，所述穿刺针包括中空孔，所述穿刺针的周向侧壁上设置有与所述中空孔连通的缺口；轴向上，所述缺口的前端与所述穿刺针的尖端端面连通，所述缺口和所述中空孔围成槽结构，所述槽结构形成所述通道；所述限位结构包括位于所述槽结构的内表面上的凸起。槽结构的两个槽壁可以发生微小的形变，从而使槽结构的开口宽度增大，槽壁带动凸起压紧在植入物的侧壁上，从而增加摩擦力，槽结构的设置可以利用自身的形变更方便的实现对第二植入物的阻滞作用，结构更加简单。
在一些实施方式中，所述槽结构的相对两个侧壁上均设置有凸起，且两个凸起相对设置，从而使植入物受力均匀。
在一些实施方式中，所述植入物至少一部分位于所述中空孔内，位于所述中空孔内的所述植入物的部分与所述槽结构的开口抵接时，所述植入物的底面与槽结构的底面之间具有形变间隙，从而为穿刺针的弯曲提供了空间。
在一些实施方式中，所述形变间隙的范围为0.05mm-0.4mm。间隙的数值越大，植入物更不容易与穿刺针挤压，但是数值太大会导致植入物过小或者穿刺针过粗。
在一些实施方式中，所述植入物包括沿槽结构的深度方向自上而下依次连接的第一部分和第二部分；所述第一部分的侧壁上具有悬挂结构，所述第一部分通过所述悬挂结构悬挂在所述缺口上，以使第二部分的底部与中空孔的内侧壁之间具有间隙；所述第二部分位于所述中空孔内，且所述第二部分的最宽位置处的宽度大于所述开口的宽度，可以使植入物悬挂在穿刺针上的同时具有较大的形变空间。
在一些实施方式中，所述缝合器包括固定部和击发机构，所述穿刺针与所述固定部连接，所述击发机构能够相对于所述固定部沿轴向运动，所述击发机构用于向前端击发所述植入物。
在一些实施方式中，所述击发机构包括推针、推钮、连接臂和联动部，由所述缝合器的前端朝向后端的方向，所述推钮、连接臂和联动部依次设置；所述推针的前端位于所述穿刺针的中空孔内；所述推钮与所述固定部滑动连接；所述连接臂的前端与推钮连接，所述连接臂的后端与联动部连接；所述联动部与推针的后端连接。通过连接臂、联动部带动推针运动，可以使推钮设置在方便操作者控制的位置，从而使缝合器的结构更符合人体力学。
在一些实施方式中，所述固定部与所述联动部之间设置有弹簧，用于使推钮复位。
在一些实施方式中，所述缝合器还包括限深管和锁死机构，所述限深管套接在所述穿刺针的外侧，所述限深管的前端为限深端；所述限深管在轴向上的位置可调；所述锁死机构用于将所述限深管锁死，以使所述限深管的位置相对于穿刺针固定。在缝合前，可以先测量待缝合组织的厚度，然后调节限深管的位置并锁定，以使穿刺针露在限深管前端的部分的长度与待缝合的组织的厚度匹配，提高手术效率。
在一些实施方式中，所述锁死机构包括控制臂，所述控制臂包括沿轴向依次连接第一连接臂、压臂和第二连接臂，所述第一连接臂的一端与限深管连接，另一端与压臂的一端连接，所述第二连接臂的一端与压臂的另一端连接，所述第二连接臂的另一端与固定部滑动连接；所述压臂与所述固定部之间具有间隙，以使所述压臂能够朝所述固定部运动；所述压臂上设置有档位销；所述锁死机构还包括位于外壳上的多个限位槽，多个限位槽沿轴向依次排列；所述压臂具有锁死状态和解锁状态，在锁死状态下，所述档位销位于所述限位槽内，所述限位槽用于阻止所述压臂沿轴向运动，在解锁状态下，所述档位销被从所述限位槽内压出，所述压臂能够沿轴向运动。通过按压并滑动压臂，实现档位的变化，控制简单。
在一些实施方式中，所述固定部上设置有沿轴向延伸的第一导向槽，所述第一连接臂上设置有滑动抵接部，所述滑动抵接部与第一导向槽抵接，所述第一导向槽用于引导所述第一连接臂沿所述穿刺针的轴向滑动，从而避免第一连接臂旋转，使第一连接臂始终沿轴向滑动。
在一些实施方式中，所述缝合器包括外壳和击发机构，所述击发机构用于向前端击发所述植入物；所述外壳的内壁上设置有档位槽；所述击发机构上设置有弹性摆杆，所述弹性摆杆的固定端与击发机构固定连接，所述弹性摆杆的自由端从所述档位槽的槽口伸入到所述档位槽内。档位槽设置在外壳上，结构简单，节省成本。
在一些实施方式中，所述缝合器内的植入物的数量为两个，所述档位槽包括第一槽单元和第二槽单元；沿后端朝向前端方向，所述第一槽单元包括位于其相对两端的第一起始端和第一限位端；所述第二槽单元包括位于其相对两端的第二起始端和第二限位端；所述档位槽还包括第一退位槽，所述第一退位槽的底面低于所述第一槽单元的底面；所述第一退位槽的一端位于所述第一限位端的底面上，且自所述第一限位端朝后端延伸并穿过所述第一槽单元的侧壁与第二槽单元连通，且所述第一退位槽的延伸方向与所述第一槽单元的延伸方向呈夹角；所述第二槽单元的底面低于所述第一退位槽的底面；所述档位槽还包括第二退位槽，所述第二退位槽的底面低于所述第二槽单元的底面；所述第二退位槽的一端位于所述第二限位端的底面上，且自所述第二限位端朝后端延伸并与第一起始端连通；初始状态下，所述自由端位于第一槽单元的第一起始端，且所述自由端具有朝向所述档位槽的底面运动的趋势，以使所述自由端始终与所述档位槽的底面抵接。医生在手术中需要注意和确认植入物的击发状态和次数，档位槽更好的限定了植入物的击发次数和顺序。
在一些实施方式中，所述缝合器内的植入物的数量为两个，所述档位槽包括第一槽单元和第二槽单元；沿后端朝向前端方向，所述第一槽单元包括位于其相对两端的第一起始端和第一限位端；所述第二槽单元包括位于其相对两端的第二起始端和第二限位端；所述第一槽单元包括第一槽壁和第二槽壁，所述第一槽壁的延伸方向与轴向平行，沿后端向前端方向，所述第二槽壁与第一槽壁之间的宽度逐渐减小；所述第二槽单元位于所述第一槽单元的第二槽壁所在侧方；所述第一槽单元和第二槽单元之间具有与第一退位槽，所述第一退位槽的前端与第一槽单元的第一限位端通过第一横槽连通，所述第一退位槽的后端与所述第二槽单元的第二起始端通过第二横槽连通；所述第二槽单元的侧方还设置有第二退位槽，所述第二槽单元位于所述第一退位槽和第二退位槽之间；所述第 二退位槽的前端与第二限位端通过第三横槽连通，所述第二退位槽的后端与第二槽壁连通，所述第二退位槽的后端底面高于所述第一槽单元的第一起始端的底面，从而在第二退位槽和第一槽单元的连通处形成下阶梯结构；初始状态下，所述自由端位于第一槽单元内，且位于所述第二退位槽的后端开口的后方并与第二槽壁抵接。医生在手术中需要注意和确认植入物的击发状态和次数，档位槽更好的限定了植入物的击发次数和顺序。
在一些实施方式中，所述外壳的材质为透明材质，方便操作者对缝合器进行控制，同时可以更好的观察穿刺的进程。
附图说明
为了更清楚地说明本公开具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本公开的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本公开实施例提供的植入物的示意图；
图2为本公开实施例提供的缝合器的示意图；
图3为图2中A位置的局部放大图；
图4为本公开实施例提供的缝合器的穿刺针的横截面的示意图；
图5为本公开实施例提供的缝合器去除上半壳的示意图；
图6为本公开实施例提供的缝合器正视图；
图7为图6中A-A方向的剖视图；
图8为图6中B-B方向的剖视图；
图9为本公开实施例提供的缝合器的一种档位槽的示意图；
图10为自由端在图9中档位槽内的运动路径；
图11为本公开实施例提供的缝合器的另一种档位槽的示意图；
图12为自由端在图11中档位槽内的运动路径。
图标：100-穿刺针；110-通道；120-限位结构；121-导向斜面；210-第一个植入物；220-第二个植入物；230-第一部分；240-第二部分；310-形变间隙；320-第一倒角；330-第二倒角；400-固定部；510-推针；520-推钮；530-连接臂；540-联动部；550-弹簧；610-限深管；621-第一连接臂；622-压臂；6221-档位销；623-第二连接臂；630-限位槽；640-第一导向槽；650-滑动抵接部；660-按钮；710-第一纵杆；720-第一竖杆；730-第二纵杆； 740-第二竖杆；750-限位卡扣；760-自由端；810-第一槽单元；811-第一起始端；812-第一限位端；813-第二槽壁；820-第一退位槽；830-第二槽单元；831-第二起始端；832-第二限位端；840-第一横槽；850-第二横槽；860-第三横槽；870-第二退位槽；900-外壳；910-螺纹件。
具体实施方式
下面将结合实施例对本公开的技术方式进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施方式，而不是全部的实施方式。基于本公开中的实施方式，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施方式，都属于本公开保护的范围。
如图1所示，所述植入物的前端端面与所述植入物的周向侧壁之间具有第一倒角320；所述植入物的后端端面与所述植入物的周向侧壁之间具有第二倒角330。第一倒角320和第二倒角330可以起到避让穿刺针弯曲的内壁的作用，避免穿刺针100发生微小弯曲后立刻与植入物的端部抵接，导致植入物断裂。
所述植入物包括沿槽结构的深度方向自上而下依次连接的第一部分230和第二部分240；所述第一部分230的侧壁上具有悬挂结构，所述第一部分230通过所述悬挂结构悬挂在所述缺口上，以使第二部分240的底部与中空孔的内侧壁之间具有间隙；所述第二部分240位于所述中空孔内，且所述第二部分240的最宽位置处的宽度大于所述开口的宽度。
植入物可以呈上窄下宽的结构，植入物的第一部分230的横截面的形状可以近似为矩形，并且靠近植入物顶面的位置处设置有悬挂结构，悬挂结构可以为向两侧凸出的凸沿，凸沿悬挂在缺口外侧；或者，第一部分的横截面呈倒梯形，上宽下窄，第一部分最宽的位置的宽度大于缺口的宽度，从而实现植入物挂靠不掉落，避免植入物的底部与中空孔的底部接触。并且，第一部分230滑动连接在穿刺针的缺口位置，避免植入物在滑动过程中旋转错位，第二部分240的横截面的形状可以近似呈不完全的球形结构，第二部分240的底面可以加工为平面，用于增加与穿刺针的圆形中空孔的底面之间的距离，避免穿刺针100发生微小弯曲后立刻与植入物的底面接触，导致植入物断裂。
所述第一倒角320和第二倒角330的取值范围为8-10°。第一倒角和第二倒角的角度越大避让效果越好，但是角度如果过大植入物强度降低。
如图1-图12所示，本公开实施例提供的缝合器包括：穿刺针100和上述多个植入物，植入物的数量可以为两个、三个甚至更多，本实施例中以植入物的数量为两个进行举例说明。如图2所示，所述植入物位于所述穿刺针100上；所述穿刺针100上设置有沿轴向延伸的通道110，植入物可以排列在通道110内，多个所述植入物能够依次经过所述通道110后从所述缝合器内被击发。所述通道110的内壁上设置有向内侧凸出的限位结构120，所述限位结构120至少能够对第二个被击发的所述植入物起到阻滞作用，以使第二个植入物220被击发出所述缝合器时所施加的力增加。限位结构120位于植入物的击发路径上，限位结构120的设置至少能够对第二个植入物220起到阻滞作用，在限位结构120的阻滞作用下，第二个植入物220受到的摩擦力增大，第二个植入物220更难通过设置限位结构120的位置，需要对第二个植入物220施加更大的外力才能使第二个植入物220通过限位结构120，从而降低了第一个植入物210将第二个植入物220带出的风险。
需要说明的，限位结构120起到的作用为阻滞作用，而非阻挡作用，第二个植入物220还是可以通过限位结构120的，只是相比于通道110内没有设置限位结构120的位置通过相对困难，限位结构120可以为凸起或者凸台。
在周向上，所述限位结构120的数量为多个。周向上，限位结构120的数量可以为两个、三个设置更多，当植入物经过限位结构120所在位置时，多个限位结构同时与植入物的周向侧壁滑动接触，增加植入物受到的摩擦力，让阻滞效果更好。可选的，周向上，限位结构120的数量可以为双数，且两两相对设置。
所述限位结构120包括相对于所述通道110内壁倾斜设置的导向斜面121，所述植入物与所述导向斜面121滑动接触，所述导向斜面121用于引导所述植入物越过所述限位结构120。
限位结构120可以呈楔形或者半球形，导向斜面121的后边沿与通道110的内壁平滑过渡，由后向前，导向斜面121逐渐朝通道110的中线方向倾斜，导向斜面121可以为平面或者曲面。植入物从限位结构120的后侧向前运动并首先与导向斜面121接触，在导向斜面121的作用下，限位结构120对植入物的压力逐渐增加，植入物受到的摩擦力逐渐增加，避免限位结构120完全阻挡第二个植入物220。
在一种可以实施的方案中，所述限位结构120能够对所有所述植入物起到阻滞作用，也就是说，在该方案中，所有的植入物，尤其是第一个植入物210，能够被限位结构120 阻滞，从而避免第一个植入物210以外从穿刺针100内滑出。所有的植入物的形状可以完全相同，植入物的制备更加方便，通用性更强。
在另外一种实施方式中，第一个所述植入物上设置有避让所述限位结构120的避让结构，以使第一个所述植入物能够相对第二个植入物更容易地通过所述限位结构120。在该方案中，限位结构120对第一个植入物210产生摩擦力相对较小，从而使第一个植入物受到的阻滞作用相对较小，可以在第一个植入物210上设置相应的避让槽，避让槽沿轴向连通第一个植入物210的前端和后端，第一个植入物210经过限位结构120所在位置时，限位结构120从避让槽内滑过；或者，可以设置第一个植入物210的外径小于第二个植入物220的外径，从而使限位结构120与第一个植入物210接触面积降低，方便第一个植入物的击发。
所述穿刺针100包括中空孔，所述穿刺针100的周向侧壁上设置有与所述中空孔连通的缺口；轴向上，所述缺口的前端与所述穿刺针100的尖端端面连通，所述缺口和所述中空孔围成槽结构，所述槽结构形成所述通道110；所述限位结构120包括位于所述槽结构的内表面上的凸起。
植入物可以位于槽结构内，在植入物沿槽结构滑动且与凸起接触时，在植入物的扩张作用下，槽结构的两个槽壁可以发生微小的形变，从而使槽结构的开口宽度增大，槽壁带动凸起压紧在植入物的侧壁上，从而增加摩擦力，槽结构的设置可以利用自身的形变更方便的实现对第二植入物的阻滞作用，结构更加简单。
所述槽结构的相对两个侧壁上可以均设置有凸起，且两个凸起相对设置，两个凸起均为半球状结构。
如图3和图4所示，所述植入物至少一部分位于所述中空孔内，位于所述中空孔内的所述植入物的部分与所述槽结构的开口抵接时，所述植入物的底面与槽结构的底面之间具有形变间隙310。
通常情况下，操作者会将穿刺针100的尖端的斜面朝向上方，然后向下入针穿刺，在进行穿刺时，当穿刺针100受到阻挡时，可能会发生微小的弯曲，弯曲后的通道110逐渐靠近植入物的底面，因为在植入物和槽结构的底面之间预留了间隙，可以避免弯曲后的穿刺针100的内壁立刻与植入物接触，导致植入物断裂。所述形变间隙310的范围可以为0.05mm-0.4mm，本实施例中采用0.1mm-0.2mm。
如图5所示，所述缝合器包括固定部400和击发机构，所述穿刺针100与所述固定部400连接，所述击发机构能够相对于所述固定部400沿轴向运动，所述击发机构用于 向前端击发所述植入物。缝合器还包括外壳900，固定部400的一部分位于外壳900内，且与外壳900固定连接，穿刺针100、固定部400和外壳900三者相对固定不动。击发结构可以通过推针510推动穿刺针100上的植入物向前运动。
如图5、图7和图8所示，所述击发机构包括推针510、推钮520、连接臂530和联动部540，由所述缝合器的前端朝向后端的方向，所述推钮520、连接臂530和联动部540依次设置。所述推针510的前端位于所述穿刺针100的中空孔内。所述推钮520与所述固定部400滑动连接，推钮520可以沿前后方向运动；所述连接臂530的前端与推钮520连接，所述连接臂的后端与联动部540连接；所述联动部540与推针510的后端连接。推钮520、连接臂530、联动部540和推针510四者固定连接，四者具有相同的运动状态。相对于外壳900向前推动推钮520后，联动部540可以带动推针510向前运动，从而将通道110内的植入物朝前方推动，直至推出穿刺针100，通过连接臂530、联动部540带动推针运动，可以使推钮设置在方便操作者控制的位置，而非一定要设置在推针的后端，从而使缝合器的结构更符合人体力学。
所述固定部400与所述联动部540之间可以设置有弹簧550，推钮520朝前运动后，联动部540挤压弹簧550，当推钮520上的外力撤去后，弹簧550用于带动联动部540朝远离固定部400的方向运动，从而使推钮520复位。
所述缝合器还包括限深管610和锁死机构，所述限深管610套接在所述穿刺针100的外侧，所述限深管610的前端为限深端；所述限深管610在轴向上的位置可调；所述锁死机构用于将所述限深管610锁死，以使所述限深管610的位置相对于穿刺针100固定。
限深管610套设在穿刺针100的外侧，限深管610的前端为限位端，通过滑动限深管610，可以改变穿刺针100露在外侧的长度。在缝合前，可以先测量待缝合组织的厚度，然后调节限深管610的位置并锁定，以使穿刺针100露在限深管610前端的部分的长度与待缝合的组织的厚度匹配。在缝合过程中，限位端与组织面抵接。
所述锁死机构包括控制臂，所述控制臂包括沿轴向依次连接第一连接臂621、压臂622和第二连接臂623，第一连接臂621和第二连接臂623与压臂622均呈夹角设置，控制臂大致呈倒“U”形。所述第一连接臂621的下端与限深管610固定连接，上端与压臂622的前端连接，所述第二连接臂623的上端与压臂622的后端连接，所述第二连接臂623的下端与固定部400抵接并能够相对于固定部400沿轴向滑动。
所述压臂622与所述固定部400之间具有间隙，以使所述压臂622能够朝所述固定部400运动；所述压臂622上设置有档位销6221；所述锁死机构还包括位于外壳900上的多个限位槽630，多个限位槽630沿轴向依次排列。所述压臂622具有锁死状态和解锁状态，在锁死状态下，所述档位销6221位于某一个限位槽630内，所述限位槽630用于阻止所述压臂622沿轴向运动；使用者通过朝固定部400方向推动压臂622，可以使压臂622产生变形，所述档位销6221被从所述限位槽630内压出，压臂622转变为解锁状态，所述压臂622能够沿轴向运动，撤去压臂622上的外力后，压臂622恢复原来的状态，档位销6221再次进入到与其位置相对应的限位槽630内。
外壳900上设置有与压臂622位置对应的滑槽，滑槽连通外壳900的内外，压臂622上连接有按钮660，按钮660沿滑槽滑动，通过按压按钮660，并推拉按钮660，可以改变限深端的位置并锁定该位置。
所述固定部400上设置有沿轴向延伸的第一导向槽640，所述第一连接臂621上设置有滑动抵接部650，所述滑动抵接部650与第一导向槽640抵接，所述第一导向槽640用于引导所述第一连接臂621沿所述穿刺针100的轴向滑动。
压臂622受到迫使其向固定部400产生形变的压力后，第二连接臂623的底端抵接在固定部400上。为了使第一连接臂621在前后滑动的过程可以始终沿轴向运动，且不进行转动，可以利用第一导向槽640将第一连接臂621支撑，第一导向槽640可以为固定部400上向前端延伸的外沿，而滑动抵接部650可以为第一连接臂621底端向下延伸的支脚，支脚抵接在外沿上。
所述缝合器包括外壳900和击发机构，所述击发机构用于向前端击发所述植入物，所述外壳900的内壁上设置有档位槽；所述击发机构上设置有弹性摆杆，所述弹性摆杆的固定端与击发机构固定连接，所述弹性摆杆的自由端760从所述档位槽的槽口伸入到所述档位槽内。
击发机构位于档位槽的槽口朝向的一侧，击发机构沿轴向进行前后方向的运动，弹性摆杆能够随击发机构一起运动，弹性摆杆可以为弹性金属杆，弹性摆杆的一端与击发机构固定，另一端为自由端760，自由端760伸入到档位槽内，在运动的过程中，弹性摆杆能够在垂直于档位槽开口所在的平面内摆动，并且可以朝向或者远离档位槽的底面运动，从而使自由端760可以沿档位槽的延伸路径运动，从而方便辅助操作者控制击发机构的档位。
弹性摆杆连接在联动部540上，弹性摆杆包括首尾依次连接的第一纵杆710、第一竖杆720、第二纵杆730和第二竖杆740，所述第一纵杆710和第二纵杆730均与轴向平行，所述第一纵杆710的后端与所述第一竖杆720的上端连接，所述第一竖杆720的下端与所述第二纵杆730的后端连接，所述第二竖杆740的上端与所述第二纵杆730的前端连接，所述第二竖杆740的下端为自由端760。所述第一竖杆720位于所述联动部540背向档位槽的一面上，所述第一竖杆720位于所述联动部540的后端端面侧，所述第二竖杆740伸入到档位槽内。第一纵杆710和第一竖杆720与联动件之间均通过限位卡扣750固定，限位卡扣750用于阻止第一纵杆710和第一竖杆720分别与联动件发生相对摆动。可以在联动部540朝向档位槽的一面上也设置限位卡扣750，限位卡扣750靠近第二纵杆730远离第二竖杆740的一端，对第二纵杆730起到限位作用，第二纵杆730可以以该限位卡扣750为支点进行摆动。并且，在限位部朝向档位槽的一面上还设置避让槽，从而在第二纵杆730的上方形成足够其摆动的空间，第二纵杆730可以在垂直于档位槽开口的平面内摆动，也可以沿档位槽开口的方向靠近档位槽或者远离档位槽。
如图9和图10所示，在一种可以实施的方案中，所述缝合器内的植入物的数量为两个，所述档位槽包括第一槽单元810和第二槽单元830；沿后端朝向前端方向，所述第一槽单元810包括位于其相对两端的第一起始端811和第一限位端812；所述第二槽单元830包括位于其相对两端的第二起始端831和第二限位端832；所述档位槽还包括第一退位槽820，所述第一退位槽820的底面低于所述第一槽单元810的底面；所述第一退位槽820的一端位于所述第一限位端812的底面上，且自所述第一限位端812朝后端延伸并穿过所述第一槽单元810的侧壁与第二槽单元830连通，且所述第一退位槽820的延伸方向与所述第一槽单元810的延伸方向呈夹角；所述第二槽单元830的底面低于所述第一退位槽820的底面。
初始时，自由端760位于第一槽单元810的第一起始端811，并且在弹性摆杆的弹力作用下，自由端760的下端面抵接在第一槽单元810的底面上，向前推动推钮520，可以带动联动部540向前运动，自由端760沿第一槽单元810运动到第一限位端812，自由端760受到阻滞，操作者知晓第一个植入物210已经击发。又因为第一退位槽820的端部位于第一限位端812，且所述第一退位槽820的底面低于所述第一槽单元810的底面，也就是说，在击发第一个植入物210时，当自由端760运动到第一限位端812时，自由端760的下端面会在弹性摆杆的弹力作用下，进行一个下阶梯动作，自由端760进入到第一退位槽820内并与第一退位槽820的底面抵接。向后推动推钮520，自由端760 受到第一退位槽820的槽壁的限位，从而也向后运动直至运动到与第一退位槽820与第二槽单元830的连通处，自由端760再进行一个下阶梯动作，自由端760进入到第二槽单元830内，并且自由端760的下端面与第二槽单元830的底面抵接。再次向前推动推钮520，可以使自由端760运动到第二限位端832，从而完成第二个植入物220的击发。
所述档位槽还包括第二退位槽870，所述第二退位槽870的底面低于所述第二槽单元830的底面；所述第二退位槽870的一端位于所述第二限位端832的底面上，且自所述第二限位端832朝后端延伸并与第一起始端811连通。
在自由端760运动到第二限位端832时，自由端760也过渡到第二退位槽870内，向后推动推钮520，自由端760在第二退位槽870的槽壁的导向下回到第一起始端811。在第一槽单元810内，第一起始端811的底面可以低于第一起始端811和第一限位端812之间位置处的底面，第一槽单元810的第一起始端811的底面可以为一个上升斜面，第一槽单元810的中间位置可以为一个平面，从而方便从第二退位槽870内推出的自由端760再次进入到第一起始端811内。
可以在第二槽单元830的底面上设置上升斜面，上升斜面位于第二限位端832的后方，自由端760先进行一个上升运动后再掉入到第二退位槽870内，上升斜面的设置可以方便各个槽过渡处下阶梯结构的设置。
在该实施方式中，主要通过第一槽单元810、第一退位槽820、第二槽单元830和第二退位槽870的槽壁对自由端760起到导向作用，从而引导自由端760在各个槽内运动。
如图11和图12所示，在另外一种实施方式中，所述缝合器内的植入物的数量为两个，所述档位槽包括第一槽单元810和第二槽单元830；沿后端朝向前端方向，所述第一槽单元810包括位于其相对两端的第一起始端811和第一限位端812；所述第二槽单元830包括位于其相对两端的第二起始端831和第二限位端832；所述第一槽单元810包括第一槽壁和第二槽壁813，所述第一槽壁的延伸方向与轴向平行，沿后端向前端方向，所述第二槽壁813与第一槽壁之间的宽度逐渐减小；所述第二槽单元830位于所述第一槽单元810的第二槽壁813所在侧方；所述第一槽单元810和第二槽单元830之间具有与第一退位槽820，所述第一退位槽820的前端与第一槽单元810的第一限位端812通过第一横槽840连通，所述第一退位槽820的后端与所述第二槽单元830的第二起始端831通过第二横槽850连通；所述第二槽单元830的侧方还设置有第二退位槽870，所述第二槽单元830位于所述第一退位槽820和第二退位槽870之间；所述第二退位槽 870的前端与第二限位端832通过第三横槽860连通，所述第二退位槽870的后端与第二槽壁813连通，所述第二退位槽870的后端底面高于所述第一槽单元810的第一起始端811的底面，从而在第二退位槽870和第一槽单元810的连通处形成下阶梯结构；初始状态下，所述自由端760位于第一槽单元810内，且位于所述第二退位槽870的后端开口的后方并与第二槽壁813抵接。
初始状态时，自由端760抵接在第一槽单元810的第二槽壁813上，向前推动推钮520，自由端760向前运动，并始终与第二槽壁813抵接，自由端760发生摆动，储存一部分弹性势能。当运动到第一限位端812时，在弹性势能的驱动下，自由端760通过第一横槽840摆入到第一退位槽820内，并且自由端760抵接在第一退位槽820中远离第一槽单元810的槽壁上。向后推动推钮520，自由端760在第一退位槽820内向后运动，当运动到第二横槽850位置时，在弹性摆杆自身的弹性作用下，自由端760摆入到第二槽单元830内，并与第二槽单元830中远离第一槽单元810的侧壁抵接，向前推动推钮520，自由端760运动到第二限位端832，第二个植入物220被击发，同时自由端760通过第三横槽860摆入到第二退位槽870内，向后推动推钮520，自由端760可以在第二退位槽870内向后滑动并回到第一起始端811。
所述外壳900的材质可以为透明材质，透过外壳900可以清楚的看到自由端760所处的位置，方便操作者对缝合器进行控制，同时可以更好的观察穿刺的进程。
外壳900可以由上半壳和下半壳拼接而成，下半壳与固定部400可以通过螺纹件910固定连接。
最后应说明的是：以上各实施例仅用以说明本公开的技术方案，而非对其限制；尽管参照前述各实施例对本公开进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本公开各实施方式技术方案的范围。

Claims (22)

  1. 一种植入物，其特征在于，所述植入物的前端端面与所述植入物的周向侧壁之间具有第一倒角(320)；
    所述植入物的后端端面与所述植入物的周向侧壁之间具有第二倒角(330)。
  2. 根据权利要求1所述的植入物，其特征在于，所述植入物的底面为平面。
  3. 根据权利要求1所述的植入物，其特征在于，所述第一倒角(320)和第二倒角(330)的取值范围为8-10°。
  4. 一种缝合器，其特征在于，包括：穿刺针(100)和多个权利要求1-3任意一项所述的植入物，所述植入物位于所述穿刺针(100)上；所述穿刺针(100)上设置有沿轴向延伸的通道(110)，多个所述植入物能够依次经过所述通道(110)后从所述缝合器内被击发；
    所述通道(110)的内壁上设置有向内侧凸出的多个限位结构(120)，多个限位结构(120)沿周向排布，所述限位结构(120)至少能够对第二个被击发的所述植入物起到阻滞作用，以使第二个植入物(220)被击发出所述缝合器时所施加的力增加。
  5. 根据权利要求4所述的缝合器，其特征在于，所述限位结构(120)包括相对于所述通道(110)内壁倾斜设置的导向斜面(121)，所述植入物与所述导向斜面(121)滑动接触，所述导向斜面(121)用于引导所述植入物越过所述限位结构(120)。
  6. 根据权利要求4所述的缝合器，其特征在于，所述限位结构(120)能够对所有所述植入物起到阻滞作用。
  7. 根据权利要求4所述的缝合器，其特征在于，第一个所述植入物上设置有避让所述限位结构(120)的避让结构，以使第一个所述植入物在通过所述限位结构(120)时比第二个所述植入物通过所述限位结构(120)时受到的摩擦力小。
  8. 根据权利要求4所述的缝合器，其特征在于，所述穿刺针(100)包括中空孔，所述穿刺针(100)的周向侧壁上设置有与所述中空孔连通的缺口；轴向上，所述缺口的前端与所述穿刺针(100)的尖端端面连通，所述缺口和所述中空孔围成槽结构，所述槽结构形成所述通道(110)；
    所述限位结构(120)包括位于所述槽结构的内表面上的凸起。
  9. 根据权利要求8所述的缝合器，其特征在于，所述槽结构的相对两个侧壁上均设置有凸起，且两个凸起相对设置。
  10. 根据权利要求8所述的缝合器，其特征在于，所述植入物至少一部分位于所述中空孔内，位于所述中空孔内的所述植入物的部分与所述槽结构的开口抵接时，所述植入物的底面与槽结构的底面之间具有形变间隙(310)。
  11. 根据权利要求10所述的缝合器，其特征在于，所述形变间隙(310)的范围为0.05mm-0.4mm。
  12. 根据权利要求10所述的缝合器，其特征在于，所述植入物包括沿槽结构的深度方向自上而下依次连接的第一部分(230)和第二部分(240)；
    所述第一部分(230)的侧壁上具有悬挂结构，所述第一部分(230)通过所述悬挂结构悬挂在所述缺口上，以使第二部分(240)的底部与中空孔的内侧壁之间具有间隙；
    所述第二部分(240)位于所述中空孔内，且所述第二部分(240)的最宽位置处的宽度大于所述开口的宽度。
  13. 根据权利要求4所述的缝合器，其特征在于，所述缝合器包括固定部(400)和击发机构，所述穿刺针(100)与所述固定部(400)连接，所述击发机构能够相对于所述固定部(400)沿轴向运动，所述击发机构用于向前端击发所述植入物。
  14. 根据权利要求13所述的缝合器，其特征在于，所述击发机构包括推针(510)、推钮(520)、连接臂(530)和联动部(540)，由所述缝合器的前端朝向后端的方向，所述推钮(520)、连接臂(530)和联动部(540)依次设置；
    所述推针(510)的前端位于所述穿刺针(100)的中空孔内；
    所述推钮(520)与所述固定部(400)滑动连接；所述连接臂(530)的前端与推钮(520)连接，所述连接臂的后端与联动部(540)连接；所述联动部(540)与推针(510)的后端连接。
  15. 根据权利要求14所述的缝合器，其特征在于，所述固定部(400)与所述联动部(540)之间设置有弹簧(550)。
  16. 根据权利要求8所述的缝合器，其特征在于，所述缝合器还包括限深管(610)和锁死机构，所述限深管(610)套接在所述穿刺针(100)的外侧，所述限深管(610)的前端为限深端；所述限深管(610)在轴向上的位置可调；
    所述锁死机构用于将所述限深管(610)锁死，以使所述限深管(610)的位置相对于穿刺针(100)固定。
  17. 根据权利要求16所述的缝合器，其特征在于，所述锁死机构包括控制臂，所述控制臂包括沿轴向依次连接第一连接臂(621)、压臂(622)和第二连接臂(623)，所述第一连接臂(621)的一端与限深管(610)连接，另一端与压臂(622)的一端连接，所述第二连接臂(623)的一端与压臂(622)的另一端连接，所述第二连接臂(623)的另一端与固定部(400)滑动连接；
    所述压臂(622)与所述固定部(400)之间具有间隙，以使所述压臂(622)能够朝所述固定部(400)运动；所述压臂(622)上设置有档位销(6221)；
    所述锁死机构还包括位于外壳(900)上的多个限位槽(630)，多个限位槽(630)沿轴向依次排列；
    所述压臂(622)具有锁死状态和解锁状态，在锁死状态下，所述档位销(6221)位于所述限位槽(630)内，所述限位槽(630)用于阻止所述压臂(622)沿轴向运动，在解锁状态下，所述档位销(6221)被从所述限位槽(630)内压出，所述压臂(622)能够沿轴向运动。
  18. 根据权利要求17所述的缝合器，其特征在于，所述固定部(400)上设置有沿轴向延伸的第一导向槽(640)，所述第一连接臂(621)上设置有滑动抵接部(650)，所述滑动抵接部(650)与第一导向槽(640)抵接，所述第一导向槽(640)用于引导所述第一连接臂(621)沿所述穿刺针(100)的轴向滑动。
  19. 根据权利要求4所述的缝合器，其特征在于，所述缝合器包括外壳(900)和击发机构，所述击发机构用于向前端击发所述植入物；
    所述外壳(900)的内壁上设置有档位槽；所述击发机构上设置有弹性摆杆，所述弹性摆杆的固定端与击发机构固定连接，所述弹性摆杆的自由端(760)从所述档位槽的槽口伸入到所述档位槽内。
  20. 根据权利要求19所述的缝合器，其特征在于，所述缝合器内的植入物的数量为两个，所述档位槽包括第一槽单元(810)和第二槽单元(830)；
    沿后端朝向前端方向，所述第一槽单元(810)包括位于其相对两端的第一起始端(811)和第一限位端(812)；所述第二槽单元(830)包括位于其相对两端的第二起始端(831)和第二限位端(832)；
    所述档位槽还包括第一退位槽(820)，所述第一退位槽(820)的底面低于所述第一槽单元(810)的底面；所述第一退位槽(820)的一端位于所述第一限位端(812)的底面上，且自所述第一限位端(812)朝后端延伸并穿过所述第一槽单元(810)的侧壁与第二槽单元(830)连通，且所述第一退位槽(820)的延伸方向与所述第一槽单元(810)的延伸方向呈夹角；所述第二槽单元(830)的底面低于所述第一退位槽(820)的底面；
    所述档位槽还包括第二退位槽(870)，所述第二退位槽(870)的底面低于所述第二槽单元(830)的底面；所述第二退位槽(870)的一端位于所述第二限位端(832)的底面上，且自所述第二限位端(832)朝后端延伸并与第一起始端(811)连通；
    初始状态下，所述自由端(760)位于第一槽单元(810)的第一起始端(811)，且所述自由端(760)具有朝向所述档位槽的底面运动的趋势，以使所述自由端(760)始终与所述档位槽的底面抵接。
  21. 根据权利要求19所述的缝合器，其特征在于，所述缝合器内的植入物的数量为两个，所述档位槽包括第一槽单元(810)和第二槽单元(830)；
    沿后端朝向前端方向，所述第一槽单元(810)包括位于其相对两端的第一起始端(811)和第一限位端(812)；所述第二槽单元(830)包括位于其相对两端的第二起始端(831)和第二限位端(832)；
    所述第一槽单元(810)包括第一槽壁和第二槽壁(813)，所述第一槽壁的延伸方向与轴向平行，沿后端向前端方向，所述第二槽壁(813)与第一槽壁之间的宽度逐渐减小；
    所述第二槽单元(830)位于所述第一槽单元(810)的第二槽壁(813)所在侧方；
    所述第一槽单元(810)和第二槽单元(830)之间具有与第一退位槽(820)，所述第一退位槽(820)的前端与第一槽单元(810)的第一限位端(812)通过第一横槽(840)连通，所述第一退位槽(820)的后端与所述第二槽单元(830)的第二起始端(831)通过第二横槽(850)连通；
    所述第二槽单元(830)的侧方还设置有第二退位槽(870)，所述第二槽单元(830)位于所述第一退位槽(820)和第二退位槽(870)之间；所述第二退位槽(870)的前端与第二限位端(832)通过第三横槽(860)连通，所述第二退位槽(870)的后端与第二槽壁(813)连通，所述第二退位槽(870)的后端底面高于所述第一槽单元(810)的第一起始端(811)的底面，从而在第二退位槽(870)和第一槽单元(810)的连通处形成下阶梯结构；
    初始状态下，所述自由端(760)位于第一槽单元(810)内，且位于所述第二退位槽(870)的后端开口的后方并与第二槽壁(813)抵接。
  22. 根据权利要求19所述的缝合器，其特征在于，所述外壳(900)的材质为透明材质。
PCT/CN2023/111292 2022-08-11 2023-08-04 植入物及缝合器 Ceased WO2024032509A1 (zh)

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