阅读说明：本技术 施夹钳及其钳头组件 (Clip applier and binding clip subassembly thereof ) 是由 王海龙 吴宇雷 王伟 于 2021-09-02 设计创作，主要内容包括：本发明涉及施夹钳技术领域,尤其是一种施夹钳及其钳头组件,该钳头组件包括：钳座、两个钳臂,弹性元件以及用于各自钩持住组织夹的一个夹臂两个卡钩件,卡钩件滑动配置在与其对应钳臂的远端,控制环套设于钳座外,并能够在击发机构的驱动下在张开位置、闭合位置及脱钩位置之间移动；本发明的钳头组件利用两个钳臂上的卡钩件分别钩持住组织夹的一个夹臂,以载入组织夹,而后利用操控控制环向远端沿直线方向移动,便可依次自动实现组织夹的闭合及组织夹与钳臂的脱钩,使组织夹留在体内,从而实现能够适用于分体式组织夹,整个操作过程方便快捷,有利于降低手术难度。(The invention relates to the technical field of clip appliers, in particular to a clip applier and a binding clip assembly thereof, wherein the binding clip assembly comprises: the tissue clamp comprises a clamp seat, two clamp arms, an elastic element, a clamping arm and two clamping hook members, wherein the clamping arm and the two clamping hook members are used for respectively hooking and holding a tissue clamp; the forceps head assembly provided by the invention has the advantages that the clamping hook parts on the two forceps arms are used for respectively hooking one clamping arm of the tissue clamp so as to load the tissue clamp, then the manipulation control ring is used for moving towards the far end along the linear direction, the tissue clamp can be closed and unhooked from the forceps arms sequentially and automatically, and the tissue clamp is left in the body, so that the split tissue clamp can be applied, the whole operation process is convenient and fast, and the reduction of the operation difficulty is facilitated.)

1. A binding clip subassembly for clip application, clip application include control ring (1) and be used for driving control ring (1) along the reciprocating motion's of rectilinear direction firing mechanism, characterized in that: this binding clip subassembly includes:

a clamp base (2);

the proximal ends of the two forceps arms (3) are hinged to the forceps base (2);

the elastic element (4) forces the far ends of the two forceps arms (3) to be far away from each other through elasticity;

the two clamping hook members (5) are used for respectively hooking one clamping arm (6) of the tissue clamp, the clamping hook members (5) correspond to the clamping arms (3) one by one, the two clamping arms (6) of the tissue clamp are respectively provided with a clamping structure, the clamping hook members (5) are arranged at the far ends of the corresponding clamping arms (3) in a sliding mode, the control ring (1) is sleeved outside the clamp seat (2) and can move among an opening position, a closing position and a unhooking position under the driving of a firing mechanism;

when the control ring (1) is in the expansion position, the clamping arms (6) on the two clamp arms (3) are separated from each other;

when the control ring (1) is in a closed position, the clamping structure on one clamping arm (6) of the tissue clamp and the clamping structure on the other clamping arm (6) are clamped with each other; in the process that the control ring (1) moves from the expansion position to the closing position, the control ring (1) applies component force to the two forceps arms (3) to force the far ends of the two forceps arms (3) to be close to each other by overcoming the elasticity of the elastic element (4);

when the control ring (1) is located at the unhooking position, the clamping hook piece (5) is unhooked from the clamping arm (6) of the tissue clamp, and in the process that the control ring (1) moves from the closing position to the unhooking position, the control ring (1) pushes the clamping hook piece (5) along the unhooking direction of the clamping arm (6).

2. The jawarm assembly of claim 1, wherein: the tissue clamp is characterized in that the hook piece (5) is provided with a hook groove (501) with an opening facing the near end of the clamp arm (3), the side surface of the clamp arm (6) of the tissue clamp is protruded with a connecting column (601), the hook groove (501) is matched with the connecting column (601) and corresponds to the connecting column (601) one by one, and the connecting column (601) is located in the corresponding hook groove (501).

3. The jawarm assembly of claim 2, wherein: all have spacing groove (301) on the medial surface of tong arm (3), the opening of spacing groove (301) on tong arm (3) is towards another tong arm (3), spacing groove (301) and spliced pole (601) one-to-one, spliced pole (601) are located rather than the spacing groove (301) that corresponds.

4. The jawarm assembly of claim 1, wherein: two side wings (502) are protruded on the hook member (5), the hook grooves (501) are formed in the side wings (502), and the clamping arm (6) on the hook member (5) is located between the two side wings (502).

5. The jawarm assembly of claim 1, wherein: an attachment plate (7) is arranged between the hook member (5) and the clamp arm (3) where the hook member is located, the attachment plate (7) is fixed on the clamp arm (3), a cantilever (701) protrudes from the inner side of the attachment plate (7), a strip-shaped hole (503) for the cantilever (701) to pass through is formed in the hook member (5), and the cantilever (701) passes through the strip-shaped hole (503) and is opposite to the inner surface of the hook member (5).

6. The jawarm assembly of claim 5, wherein: the clamping hook piece (5) is provided with an elastic sheet (504) which is tilted towards the connecting plate (7) and has elasticity, one end, close to the far end of the clamp arm (3), of the elastic sheet (504) is fixedly connected with the clamping hook piece (5), and the connecting plate (7) is provided with a first positioning hole (702) and a second positioning hole (703) for clamping the elastic sheet (504);

when the control ring (1) is positioned at the expansion position and the closing position, the elastic sheet (504) is clamped into the first positioning hole (702);

when the control ring (1) is positioned at the unhooking position, the elastic sheet (504) is clamped into the second positioning hole (703).

7. The jawarm assembly of claim 1, wherein: the proximal end of the control ring (1) is provided with two extension arms (101), the extension arms (101) correspond to the clamping hook members (5) one by one, and the inner surfaces of the extension arms (101) are provided with protrusions (102), and the protrusions (102) are used for pushing the clamping hook members (5) corresponding to the protrusions.

8. The jawarm assembly of claim 1, wherein: the elastic element (4) is a V-shaped spring leaf, and the spring leaf is arranged between each clamp arm (3) and the clamp seat (2).

9. The utility model provides a clip applier, includes binding clip subassembly, control ring (1), is used for driving control ring (1) along the reciprocating motion's of rectilinear direction firing mechanism, its characterized in that: the binding clip assembly defined in any one of claims 1 to 8.

10. The clip applier of claim 9, wherein: the firing mechanism comprises a trigger (8), a transmission pipe (9), a gun barrel (10) and a reset spring (11), the trigger (8) is connected with a clamp body (12), the far end of the clamp body (12) is fixedly connected with a clamp seat (2), the gun barrel (10) is slidably mounted on the clamp body (12) along the axis direction of the gun barrel, the near end of the gun barrel (10) is fixedly connected with the transmission pipe (9), and the far end of the gun barrel (10) is fixedly connected with a control ring (1);

one end of the reset spring (11) is abutted against the transmission pipe (9), the other end of the reset spring is abutted against the clamp body (12), a step surface (901) is arranged on the transmission pipe (9), the trigger (8) is hinged with the clamp body (12), and one end, close to the transmission pipe (9), of the trigger (8) is abutted against the step surface (901).

Technical Field

The invention relates to the technical field of clip appliers, in particular to a clip applier and a clip head assembly thereof.

Background

The clip applier is a surgical instrument used for controlling a tissue clip to be closed during a surgical operation so as to ligate and close blood vessels and body cavity tissues, and is used for clamping and closing the tissue clip in the surgical operation.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to solve the problem that the clip applier in the prior art is not suitable for a split tissue clip with two completely independent clip arms, the clip applier and a clip head assembly thereof are provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: a binding clip assembly for a clip applier having a control ring and a firing mechanism for driving the control ring in a linear direction, the binding clip assembly comprising:

a clamp base;

the proximal ends of the two forceps arms are hinged to the forceps base;

the elastic element forces the far ends of the two forceps arms to be away from each other through elasticity;

the two clamping arms of the tissue clamp are in one-to-one correspondence, each clamping arm of the tissue clamp is provided with a clamping structure, the clamping elements are arranged at the far ends of the corresponding forceps arms in a sliding mode, and the control ring sleeve is arranged outside the forceps base and can move among an opening position, a closing position and a unhooking position under the driving of the firing mechanism;

when the control ring is in the expanded position, the clamp arms on the two clamp arms are separated from each other;

when the control ring is in a closed position, the clamping structure on one clamping arm of the tissue clamp and the clamping structure on the other clamping arm of the tissue clamp are clamped with each other; in the process that the control ring moves from the expansion position to the closing position, the control ring applies component force to the two forceps arms to force the distal ends of the two forceps arms to be close to each other by overcoming the elasticity of the elastic element;

when the control ring is located at the unhooking position, the clamping hook piece is unhooked from the clamping arm of the tissue clamp, and the control ring pushes the clamping hook piece along the unhooking direction of the clamping arm in the process that the control ring moves from the closing position to the unhooking position.

Utilize the clasp part on two tong arms to hook respectively and hold a arm lock that the tissue pressed from both sides in this embodiment, then utilize to control the control ring to remove along linear direction to the distal end, alright realize automatically in proper order that the closure of tissue clamp and the unhook of tissue clamp and tong arm make the tissue clamp stay internally to the realization can be applicable to split type tissue clamp, whole operation process convenient and fast is favorable to reducing the operation degree of difficulty.

Furthermore, the hook piece is provided with a hook groove with an opening facing the near end of the forceps arm, connecting columns are protruded from the side surface of the clamping arm of the tissue clamp, the hook grooves are matched with the connecting columns and are in one-to-one correspondence, and the connecting columns are positioned in the corresponding hook grooves; the hook groove on the clamping hook piece is utilized to hook the connecting column on the clamping arm, so that the two clamping arms of the tissue clamp are loaded, the two clamping arms are kept in a state of being separated from each other, the clamping hook piece is pushed by the control ring after the two clamping arms are closed, and the connecting column on the clamping arm is separated from the hook groove relatively from the opening of the hook groove.

Furthermore, the inner side surfaces of the forceps arms are provided with limiting grooves, the opening of the limiting groove on one forceps arm faces to the other forceps arm, the limiting grooves correspond to the connecting columns one by one, and the connecting columns are positioned in the limiting grooves corresponding to the connecting columns; thereby preventing the clamping arms of the tissue clamp from moving in the moving direction of the control ring and being separated from the hook grooves in an uncontrolled manner.

Furthermore, two side wings protrude from the hook member, the hook grooves are formed in the side wings, and the clamping arm on the hook member is located between the two side wings; utilize two flanks to carry on spacingly to the arm lock that the tissue pressed from both sides, can improve the stability of arm lock on card hook piece.

Furthermore, a connecting plate is arranged between the hook piece and the clamp arm where the hook piece is arranged, the connecting plate is fixed on the clamp arm, a cantilever is protruded on the inner side of the connecting plate, a strip-shaped hole for the cantilever to pass through is formed in the hook piece, and the cantilever passes through the strip-shaped hole and is opposite to the inner surface of the hook piece; thereby realize the sliding connection of hook piece and tong arm, and compact structure.

Furthermore, the hook piece is provided with an elastic sheet which is tilted towards the connecting plate, one end of the elastic sheet close to the far end of the clamp arm is fixedly connected with the hook piece, and the connecting plate is provided with a first positioning hole and a second positioning hole for the elastic sheet to be clamped into;

when the control ring is located at the expansion position and the closing position, the elastic sheet is clamped into the first positioning hole; therefore, the hook piece is prevented from easily moving in the process, and the hook piece can move and unhook by applying thrust by the control ring, so that the smooth operation is ensured;

when the control ring is positioned at the unhooking position, the elastic sheet is clamped into the second positioning hole; thereby limiting the clasp member to remain in a disengaged state with the tissue clip, ensuring successful unhooking of the tissue clip.

Further, the proximal end of the control ring is provided with two extension arms, the extension arms correspond to the clamping hook members one by one, and the inner surfaces of the extension arms are provided with protrusions used for pushing the clamping hook members corresponding to the protrusions.

Furthermore, the elastic element is a V-shaped spring leaf, and the spring leaf is arranged between each forceps arm and the forceps base.

The invention also provides a clip applier which comprises the forceps head assembly, the control ring and the firing mechanism for driving the control ring to reciprocate along the linear direction.

Furthermore, the firing mechanism comprises a trigger, a transmission tube, a gun barrel and a return spring, the trigger is connected with the clamp body, the far end of the clamp body is fixedly connected with the clamp seat, the gun barrel is slidably mounted on the clamp body along the axial direction of the gun barrel, the near end of the gun barrel is fixedly connected with the transmission tube, and the far end of the gun barrel is fixedly connected with the control ring;

one end of the reset spring is abutted against the transmission pipe, the other end of the reset spring is abutted against the clamp body, a step surface is arranged on the transmission pipe, the trigger is hinged with the clamp body, and one end of the trigger, which is close to the transmission pipe, is abutted against the step surface.

The invention has the beneficial effects that: the forceps head assembly provided by the invention has the advantages that the clamping hook parts on the two forceps arms are used for respectively hooking one clamping arm of the tissue clamp so as to load the tissue clamp, then the manipulation control ring is used for moving towards the far end along the linear direction, the tissue clamp can be closed and unhooked from the forceps arms sequentially and automatically, and the tissue clamp is left in the body, so that the split tissue clamp can be applied, the whole operation process is convenient and fast, and the reduction of the operation difficulty is facilitated.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a three-dimensional schematic view of a jawarm assembly of the present invention;

FIG. 2 is a schematic front view of the present invention binding clip assembly;

FIG. 3 is a cross-sectional schematic view of the jawarm assembly of the present invention with the control ring in the expanded position;

FIG. 4 is an enlarged partial schematic view of A in FIG. 3;

FIG. 5 is a three-dimensional schematic view of the jawarm assembly of the present invention with the control ring in the closed position;

FIG. 6 is a schematic front view of the jawarm assembly of the present invention with the control ring in the closed position;

FIG. 7 is a schematic cross-sectional view of the jawarm assembly of the present invention with the control ring in the closed position;

FIG. 8 is a three-dimensional schematic view of the present invention jaw assembly with the control ring in the disengaged position;

FIG. 9 is a schematic front view of the present invention jaw assembly with the control ring in the disengaged position;

FIG. 10 is a cross-sectional schematic view of the jawarm assembly of the present invention with the control ring in the disengaged position;

FIG. 11 is a three-dimensional schematic view of the connection plate of the present invention tong head assembly;

FIG. 12 is a three-dimensional schematic view of a hook plate of the present invention jaw assembly;

FIG. 13 is a three-dimensional view of the coupling plate, hook plate and clamp arm of the present invention in a jaw assembly;

FIG. 14 is a three-dimensional schematic view of a control ring in the present invention jaw assembly;

FIG. 15 is a three-dimensional schematic view of a tissue clip in a separated state according to the present invention;

FIG. 16 is a three-dimensional schematic view of a tissue clip in a closed position according to the present invention;

FIG. 17 is a schematic cross-sectional view of a clip applier of the invention;

FIG. 18 is a schematic view of the trigger and drive tube of the clip applier of the present invention.

In the figure: 1. a control ring 101, an extension arm 102, a projection;

2. a clamp base;

3. a clamp arm 301 and a limit groove;

4. an elastic element;

5. the hook comprises a hook piece 501, a hook groove 502, a side wing 503, a strip hole 504 and a spring piece;

6. the clamping arm comprises a clamping arm body 601, a connecting column body 602, a locking hook part 603 and a locking groove part;

7. the connecting plate, 701, the cantilever, 702, the first positioning hole, 703 and the second positioning hole;

8. a trigger;

9. a transmission pipe 901 and a step surface;

10. barrel, 11, return spring, 12, clamp body.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams illustrating the basic structure of the present invention only in a schematic manner, and thus show only the constitution related to the present invention, and directions and references (e.g., upper, lower, left, right, etc.) may be used only to help the description of the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.

Example 1

As shown in fig. 1 to 16, a jaw assembly for applying forceps, the forceps including a control ring 1 and a firing mechanism for driving the control ring 1 to reciprocate in a linear direction, the jaw assembly comprising:

a clamp base 2;

the proximal ends of the two forceps arms 3 are hinged to the forceps base 2, and hinge points between the two forceps arms 3 and the forceps base 2 are located on the same axis;

an elastic member 4 for forcing the distal ends of the two caliper arms 3 away from each other by an elastic force;

the two clamping hook members 5 are used for respectively hooking one clamping arm 6 of the tissue clamp, the clamping hook members 5 correspond to the forceps arms 3 one by one, the two clamping arms 6 of the tissue clamp are respectively provided with a clamping structure, the clamping hook members 5 are arranged at the far ends of the forceps arms 3 corresponding to the clamping hook members in a sliding mode, and the control ring 1 is sleeved outside the forceps base 2 and can move among an opening position, a closing position and a unhooking position under the driving of a firing mechanism;

when the control ring 1 is in the expanded position, the clamping arms 6 on the two clamping arms 3 are separated from each other;

when the control ring 1 is in a closed position, the clamping structure on one clamping arm 6 of the tissue clamp and the clamping structure on the other clamping arm 6 are clamped with each other; in the process that the control ring 1 moves from the expansion position to the closing position, the control ring 1 applies component force to the two forceps arms 3 to force the distal ends of the two forceps arms 3 to be close to each other by overcoming the elasticity of the elastic element 4;

when the control ring 1 is at the unhooking position, the clamping hook piece 5 is unhooked from the clamping arm 6 of the tissue clamp, and in the process that the control ring 1 moves from the closing position to the unhooking position, the control ring 1 pushes the clamping hook piece 5 along the unhooking direction of the clamping arm 6.

In this embodiment, each clamping arm 6 of the tissue clamp has two clamping structures, each of the two clamping structures on one clamping arm 6 is a lock hook portion 602, the two lock hook portions 602 are respectively located at two ends of the clamping arm 6 where the two lock hook portions are located, each of the two clamping structures on the other clamping arm 6 is a lock slot portion 603, and the two lock slot portions 603 are respectively located at two ends of the clamping arm 6 where the two lock slot portions are located; the material of the clamping arm 6 is medical degradable material.

In this embodiment, the hook member 5 has a hook slot 501 with an opening facing the proximal end of the forceps arm 3, the lateral surface of the clamping arm 6 of the tissue clip is protruded with a connecting post 601, the hook slots 501 are matched with the connecting posts 601 and are in one-to-one correspondence, and the connecting posts 601 are located in the corresponding hook slots 501; the connecting column 601 on the clamping arm 6 is hooked by the hook groove 501 on the clamping hook member 5, so that the two clamping arms 6 of the tissue clamp are loaded, the two clamping arms 6 are kept in a state of being separated from each other, the clamping hook member 5 is pushed by the control ring 1 after the two clamping arms 6 are closed, and the connecting column 601 on the clamping arms 6 is separated from the hook groove 501 relatively from the opening of the hook groove 501.

The number of the connecting columns 601 on the clamping arm 6 of each tissue clamp can be specifically designed to be four, wherein two connecting columns 601 are positioned on two sides of the proximal end of the clamping arm 6, and the other two connecting columns 601 are positioned on two sides of the distal end of the clamping arm 6; this ensures that the hooking part 5 can stably and firmly hook the clamping arms 6 of the tissue clip.

In this embodiment, the inner side surfaces of the jawarms 3 are provided with limiting grooves 301, specifically, the inner side surface of each jawarms 3 is provided with four limiting grooves 301, the opening of the limiting groove 301 on one jawarms 3 faces to the other jawarms 3, the limiting grooves 301 correspond to the connecting columns 601 one by one, and the connecting columns 601 are located in the limiting grooves 301 corresponding thereto; so as to prevent the clamping arm 6 of the tissue clamp from moving in the moving direction of the control ring 1 and being separated from the hook slot 501 in an uncontrolled way;

in this embodiment, the hook member 5 protrudes with two side wings 502, the side wings 502 are provided with the hook slots 501, the clamping arm 6 on the hook member 5 is located between the two side wings 502, and the two side wings 502 and the hook member 5 are integrally formed; utilize two flanks 502 to carry on spacingly to the arm lock 6 of tissue clamp, can improve the stability of arm lock 6 on card hook piece 5.

In this embodiment, an attachment plate 7 is disposed between the hook member 5 and the clamp arm 3, the attachment plate 7 is fixed on the clamp arm 3, a cantilever 701 protrudes from the inner side of the attachment plate 7, the cantilever 701 is integrally formed with the attachment plate 7, the cantilever 701 can have elasticity, a strip-shaped hole 503 for the cantilever 701 to pass through is disposed on the hook member 5, and the cantilever 701 passes through the hole 503 and is opposite to the inner surface of the hook member 5; thereby realizing the sliding connection of the clamping hook part 5 and the clamp arm 3 and having compact structure.

In this embodiment, the hook member 5 has an elastic piece 504 tilted toward the connection plate 7, one end of the elastic piece 504 close to the distal end of the clamp arm 3 is fixedly connected to the hook member 5, and the connection plate 7 is provided with a first positioning hole 702 and a second positioning hole 703 for the elastic piece 504 to be inserted into;

when the control ring 1 is located at the expansion position and the closing position, the elastic sheet 504 is clamped into the first positioning hole 702; therefore, the hook member 5 is prevented from easily moving in the process, and the hook member 5 can move and unhook by applying a thrust force by the control ring 1, so as to ensure the smooth operation;

when the control ring 1 is located at the unhooking position, the elastic sheet 504 is clamped into the second positioning hole 703; thereby restraining the clasp member 5 from remaining unhooked from the tissue clip, ensuring successful unhooking of the tissue clip.

The proximal end of the control ring 1 in this embodiment has two extension arms 101, the extension arms 101 correspond to the hooking members 5 one by one, and the inner surface of the extension arm 101 has a protrusion 102, and the protrusion 102 is used for pushing the hooking member 5 corresponding thereto.

In the embodiment, the elastic element 4 is a V-shaped spring piece, the spring piece is arranged between each clamp arm 3 and the clamp base 2, one end of the spring piece is propped against the clamp arm 3, and the other end of the spring piece is propped against the clamp base 2; it should be noted that the elastic element 4 can also be a torsion spring, one end of which is fixed to the forceps arm 3 and the other end of which is fixed to the forceps base 2.

The working principle of the jaw assembly in the embodiment is as follows:

initially, the two clamping arms 6 of the tissue clamp are respectively hooked by the two clamping arms 3, the control ring 1 is in an expanded position, the distal ends of the two clamping arms 3 are kept in a state of being separated from each other under the action of the elastic element 4, the two clamping arms 6 of the tissue clamp are correspondingly kept in a state of being separated from each other, and the two clamping arms 3 are both abutted against the inner ring wall of the control ring 1, so that the control ring 1 maintains the opening amplitude of the two clamping arms 3; meanwhile, the elastic sheet 504 on the hook piece 5 is clamped into the first positioning hole 702 on the connecting plate 7;

firstly, when the trigger mechanism controls the control ring 1 to move towards the far end, the control ring 1 applies component force to the two forceps arms 3 to force the far ends of the two forceps arms 3 to mutually approach against the elasticity of the elastic element 4, the elastic element 4 compresses for energy storage, the clamping arms 6 on the two forceps arms 3 approach together, until the control ring 1 moves from the expansion position to the closing position, the two clamping arms 6 can clamp the tissue ligation, namely, the locking hook part 602 on one clamping arm 6 and the locking groove part 603 on the other clamping arm 6 are clamped with each other;

then, the trigger mechanism continues to operate the control ring 1 to move towards the far end, the control ring 1 does not apply component force to the two forceps arms 3 to enable the two forceps arms to approach each other any more, but the protrusion 102 of the extension arm 101 on the control ring 1 contacts with the near end part of the hook member 5 to push the hook member 5 to move towards the far end by overcoming the acting force between the elastic sheet 504 and the connecting plate 7 until the control ring 1 reaches the unhooking position, the hook groove 501 on the hook member 5 is separated from the connecting column 601 on the tissue clamp to realize unhooking, the elastic sheet 504 on the hook member 5 is clamped into the second positioning hole 703 on the connecting plate 7 along with the control ring, and the hook member 5 is prevented from easily moving;

finally, the firing mechanism drives the control ring 1 to move towards the near end, the control ring 1 resets, and the two clamp arms 3 reset under the action of the elastic element 4; the tissue clamp keeps clamping and closing the tissue and is kept in the human body, and the forceps head component leaves the human body along with the forceps applying forceps.

Because the existing clip applier needs to require that the tissue clip has certain elasticity, and the tissue clip adopting the medical degradable material cannot have better elasticity, the tissue clip cannot adopt the medical degradable material; obviously, the clip applier using the above described jaw assembly solves this technical problem without any requirement for the elasticity of the tissue clip.

Example 2

As shown in fig. 17 to 18, a clip applier comprises a jaw assembly, a control ring 1, and a firing mechanism for driving the control ring 1 to reciprocate along a linear direction, wherein the jaw assembly is the jaw assembly in embodiment 1.

The firing mechanism comprises a trigger 8, a transmission pipe 9, a gun barrel 10 and a return spring 11, wherein the trigger 8 is connected with a clamp body 12, the far end of the clamp body 12 is fixedly connected with a clamp seat 2, the gun barrel 10 is slidably mounted on the clamp body 12 along the axial direction of the gun barrel, the near end of the gun barrel 10 is fixedly connected with the transmission pipe 9, and the far end of the gun barrel 10 is fixedly connected with the control ring 1;

one end of the reset spring 11 is abutted against the transmission tube 9, the other end of the reset spring is abutted against the clamp body 12, a step surface 901 is arranged on the transmission tube 9, the trigger 8 is hinged with the clamp body 12, and one end of the trigger 8 close to the transmission tube 9 is abutted against the step surface 901.

In this embodiment, by pulling the trigger 8, the trigger 8 pulls the driving tube 9, and then the driving tube 9 drives the barrel 10 to move to the far end along the axis direction thereof, so as to drive the control ring 1 on the driving tube 9 to move to the far end, wherein, in the process that the driving tube 9 moves to the far end, the return spring 11 is compressed, therefore, when loosening the trigger 8, the return spring 11 can drive the driving tube 9 to move to the near end, so as to drive the control ring 1 to reset.

In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that numerous changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.