CN219306822U

CN219306822U - Clip applier and clip bin assembly

Info

Publication number: CN219306822U
Application number: CN202222820091.6U
Authority: CN
Inventors: 孙宝峰; 程涛; 李洋; 乔志晨
Original assignee: Fengh Medical Co ltd
Current assignee: Fengh Medical Co ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-07-07
Anticipated expiration: 2032-10-25

Abstract

The application discloses a clip applier and a clip cartridge assembly. When in the first state, the first limiting part and the first resisting part form first shape matching, and the second limiting part and the second resisting part form second shape matching, so that the clamping bin assembly is arranged on the rod body assembly. In response to the first and second external forces, the cartridge assembly is sequentially switched from the first state to the second and third states such that the first and second form fits are sequentially released, thereby removing the cartridge assembly from the shaft assembly. Therefore, the clamping bin assembly is convenient for operators to detach and replace on the premise that the clamping bin assembly can be fixed with the rod body assembly in the using process.

Description

Clip applier and clip bin assembly

Technical Field

The application relates to the technical field of medical equipment, in particular to a clip applier and a clip bin assembly.

Background

The clip applier includes a shaft assembly, a clip cartridge assembly, an operating assembly, and a jaw assembly. The operating assembly and the jaw assembly are arranged at two axial ends of the rod body assembly. The clamping bin assembly is arranged on the rod body assembly. The operation assembly pushes the clip in the clip bin assembly to the jaw assembly through the rod body assembly, and drives the jaw assembly to be closed through the rod body assembly, so that the clip in the jaw assembly is clamped on tissues or blood vessels, and the hemostatic and ligature closing effects are achieved.

In the prior art, the clamping bin assembly is in plug-in connection with the side wall of the rod body assembly so as to realize detachable connection. Specifically, the lateral wall of shaft subassembly has the arch, presss from both sides the storehouse subassembly and has the recess with protruding shape, size assorted, presss from both sides the storehouse subassembly and can locate protruding through the recess closely. Under certain external force, the clamping bin assembly can be pulled out from the rod body assembly, so that a new clamping bin assembly is replaced. In order to ensure that the clamping bin assembly is firmly installed on the rod body assembly, the protrusions and the grooves are required to be tightly matched, so that the plugging force for plugging and unplugging the clamping bin assembly is large, and the clamping bin assembly is inconvenient to install and detach.

Based on the foregoing, there is a need for an improvement in the connection structure of existing cartridge assemblies to shaft assemblies.

Disclosure of Invention

Aiming at the defects of the prior art, the application aims at providing a clamp applier and a clamp bin assembly, which can fix the clamp bin assembly on a rod body assembly of the clamp applier in the use process and is convenient for operators to detach and replace the clamp bin assembly subsequently.

In order to solve the technical problems, the application is realized by the following technical scheme:

a clip applier comprises a rod body component and a clip bin component.

The shaft assembly comprises a shaft main body, a first resisting part arranged on the shaft main body, and a second resisting part arranged at intervals with the first resisting part along the axial direction of the shaft main body.

The clamping bin assembly comprises a shell main body, a plurality of clamps, a first limiting part and a second limiting part. Each clip comprises a clip arm and a convex part arranged on the clip arm, and a plurality of clips are accommodated in the shell body and stacked in a staggered manner, so that the convex parts of two adjacent clips are staggered. The first limiting part is arranged at one end of the shell main body. The second limiting part is arranged at the other end of the shell main body and has elasticity.

Wherein, the clamping bin assembly has a first state, a second state and a third state relative to the rod body assembly; in the first state, the first shape fit formed by the first limiting part and the first resisting part is kept, and the second shape fit formed by the second limiting part and the second resisting part is kept, so that the cartridge assembly is mounted on the rod body assembly; in response to a first external force, the cartridge assembly switches from a first state to a second state in which the first form fit is released; in response to a second external force, the cartridge assembly switches from the second state to a third state in which the second form fit is released.

Further, the first and second form fits each have an abutting state and a disengaged state; the first positive fit being in an abutting state such that it is held, the first positive fit being in a disengaged state such that it is released; the second form fit being in an abutting state such that it is held, the second form fit being in a disengaged state such that it is released;

in the first state, the first shape fit is in an abutting state, and the second shape fit is in an abutting state;

in the second state, the first shape fit is in a disengaged state, and the second shape fit is in an abutting state;

in the third state, the first form fit is in a disengaged state and the second form fit is in a disengaged state.

Further, in response to the first external force, the second limiting portion deforms to enable the first shape fit to be switched from the abutting state to the disengaging state, and further enable the cartridge clamping assembly to be switched from the first state to the second state.

Further, the first limiting part and the second limiting part comprise a connecting section and a buckling section. The connecting section is provided in the case body and extends in a direction at an angle to the axial direction of the lever body. The buckling section is arranged at the extending tail end of the connecting section.

Further, the angle between the connecting section of the first limiting part and the axial direction of the rod main body is a right angle; the angle between the connecting section of the second limiting part and the axial direction of the rod main body is an acute angle.

Further, the snap-fit segment is a protrusion extending axially along the stem body.

Further, the extending direction of the buckling section of the second limiting part is opposite to that of the buckling section of the first limiting part.

Further, the clamping bin assembly comprises a stress part, and the stress part is arranged at the upper part of the shell main body so that an operator can apply a first external force and a second external force to the clamping bin assembly.

Further, the stress part is a groove or a bulge.

Further, the clip applier comprises an elastic member, one end of the elastic member elastically abuts against the rod main body, and the other end of the elastic member elastically abuts against the shell main body.

Further, in the first state, the case body is carried by the lever body.

Further, the shaft assembly may further include a sleeve. The sleeve is sleeved outside the rod main body and can reciprocate along the axial direction of the rod main body so as to drive the jaw assembly of the clip applier to open or close, the sleeve is provided with an opening at the position corresponding to the clamping bin assembly, and a pair of edges of the opening, which extend along the axial direction of the rod main body, are respectively positioned at two opposite sides of the shell main body and respectively abutted with the shell main body.

For solving the technical problem, the application still provides a clamp bin assembly for clip applier, clip applier has pole body subassembly, and the clamp bin assembly includes shell main part, a plurality of clip, first spacing portion and second spacing portion. Each clip comprises a clip arm and a convex part arranged on the clip arm, and a plurality of clips are accommodated in the shell main body and are stacked in a staggered manner, so that the convex parts of two adjacent clips are staggered; the first limiting part is arranged at one end of the shell main body; the second limiting part is arranged at the other end of the shell main body and has elasticity. Wherein, the clamping bin assembly has a first state, a second state and a third state relative to the rod body assembly; in the first state, the first shape matching formed by the first limiting part and the rod body component is kept, and the second shape matching formed by the second limiting part and the rod body component is kept, so that the clamping bin component is installed on the rod body component; in response to a first external force, the cartridge assembly switches from a first state to a second state in which the first form fit is released and the second form fit is maintained; in response to a second external force, the cartridge assembly switches from the second state to a third state in which the second form fit is released.

Further, the first limiting part and the second limiting part comprise a connecting section and a buckling section. The connecting section is arranged on the shell main body and extends along the direction forming an angle with the length direction of the shell main body. The buckling section is arranged at the extending tail end of the connecting section.

Further, the angle between the connecting section of the first limiting part and the length direction of the shell main body is a right angle; the connecting section of the second limiting part and the length direction of the shell body form an included angle which is an acute angle.

Further, the snap-fit segments are protrusions extending generally along the length of the shell body.

Further, the clamping bin assembly comprises a stress part, and the stress part is arranged at the upper part of the shell main body so as to enable an operator to apply external force to the clamping bin assembly.

Further, the stress part is a groove or a bulge.

Compared with the prior art, the beneficial effect of this application lies in:

the first shape fit of the first limiting part and the first resisting part is maintained, and the second shape fit of the second limiting part and the second resisting part is maintained, so that the cartridge clamping assembly is installed on the rod body assembly. Because the second limiting part has elasticity, under the action of the first external force, the second limiting part elastically deforms, so that the clamping bin assembly can move relative to the rod body assembly to release the first shape fit. After the first form fit is released, the second form fit is released under the influence of a second external force, thereby removing the cartridge assembly from the shaft assembly. In this application, through making the spacing portion deformation of second, can dismantle or install and press from both sides storehouse subassembly. Therefore, the clamping bin assembly is convenient for operators to detach and replace on the premise that the clamping bin assembly can be fixed with the rod body assembly in the using process.

Drawings

FIG. 1 is a schematic view of an embodiment of a clip applier of the present application;

FIG. 2 is an enlarged view of the distal end of the clip applier shown in FIG. 1;

FIG. 3 is a schematic view of the three-dimensional structure of the distal end of the clip applier shown in FIG. 1, with the cannula omitted;

FIG. 4 is a cross-sectional view of the distal end of the clip applier shown in FIG. 1, with the cartridge assembly coupled to the shaft assembly;

FIG. 5 is a cross-sectional view of the distal end of the clip applier shown in FIG. 1, with the cartridge assembly separated from the shaft assembly;

FIG. 6 is a schematic illustration of the clip applier embodiment of FIG. 1 depicting the removal of a cartridge assembly from a shaft assembly;

FIG. 7 is a schematic view of one manner in which the clip applier assembly is mounted to the shaft assembly in the embodiment of the clip applier shown in FIG. 1;

FIG. 8 is a schematic view of one manner in which the clip applier assembly is mounted to the shaft assembly in the embodiment of the clip applier shown in FIG. 1;

FIG. 9 is a section H1-H1 of FIG. 4;

FIG. 10 is a schematic view of the three-dimensional structure of the cannula of the clip applier shown in FIG. 1;

FIG. 11 is a schematic cross-sectional view of a prior art clip stack disposed within a housing body;

FIG. 12 is a schematic view of the three-dimensional structure of the clip in the clip applier shown in FIG. 1;

FIG. 13 is a schematic view of the clip of FIG. 12 stacked in accordance with the prior art;

FIG. 14 is a schematic view of the three-dimensional structure of the clip applier cartridge assembly of FIG. 1;

FIG. 15 is a schematic view of the cartridge assembly of FIG. 14 with the first side omitted to view the clip;

FIG. 16 is a schematic three-dimensional view of a stacked configuration of a plurality of clips of the cartridge assembly of FIG. 14;

FIG. 17 is a schematic view of the three-dimensional structure of the housing body of the cartridge assembly of FIG. 14, with the first side portion omitted;

FIG. 18 is an exploded view of the biasing assembly of the cartridge assembly of FIG. 14;

fig. 19 is a schematic view of a three-dimensional structure of a first side portion within the cartridge assembly of fig. 14.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It will be appreciated that the terms "proximal", "posterior" and "distal", "anterior" are used herein with respect to a clinician manipulating an operating assembly of a clip applier. The terms "proximal", "posterior" and "anterior" refer to the portion proximal to the clinician, and the terms "distal" and "anterior" refer to the portion distal to the clinician. I.e., the operating member is proximal and the jaw member is distal, e.g., the proximal end of a component is relatively close to one end of the operating member and the distal end is relatively close to one end of the jaw member. However, clip appliers may be used in many orientations and positions, and therefore these terms expressing relative positional relationships are not limited and absolute.

In this application, unless specifically stated and limited otherwise, the terms "connected," "coupled," and the like are to be construed broadly, and may be fixedly connected, detachably connected, movably connected, or integrated, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two elements or interaction relationship between the two elements such as abutting. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be. It should be noted that, when the terms "connected" and "connected" are used in the meanings defined by the corresponding terms, they are used in the excluding of the obvious cases, and not excluding other possible cases.

Please refer to fig. 1 to 3. Fig. 1 is a schematic view of an embodiment of a clip applier of the present application. Fig. 2 is an enlarged view of the distal end of the clip applier shown in fig. 1. FIG. 3 is a schematic view of the three-dimensional structure of the distal end of the clip applier shown in FIG. 1, with the cannula omitted.

Clip applier includes an operating assembly 300, shaft assembly 600, jaw assembly 400, and cartridge assembly 700.

The operating assembly 300 includes a housing 301 and a wrench 302 movably mounted to the housing 301. The housing 301 is divided into a head housing 303 and a handle housing 304 extending from the underside of the head housing 303 in a positional relationship. The user can hold the handle housing 304 by the palm and pull the wrench 302 by the finger, so that the wrench 302 moves relative to the housing 301 to complete the firing action. Those skilled in the art will readily appreciate that while wrench 302 is shown and described, the clip appliers disclosed herein may not need to include wrench 302, e.g., the clip appliers may be motorized and may include an actuation button for actuating a motor to control firing of the device.

The shaft assembly 600 extends from the operating assembly 300, with a proximal end near the operating assembly 300 and a distal end remote from the operating assembly 300. In the illustrated embodiment, the shaft assembly 600 includes a shaft assembly front section 600a and a shaft assembly rear section 600b that are relatively rotatable about an axis L. The shaft assembly rear section 600b extends from the operating assembly 300, and the shaft assembly front section 600a is disposed at an extending end of the shaft assembly rear section 600b. The force receiving portion 305 of the operating assembly 300 is capable of driving the shaft assembly front section 600a to rotate about the axis L relative to the shaft assembly rear section 600b. In other embodiments, the shaft assembly 600 may be integral without segmentation.

Specifically, shaft assembly 600 has a shaft body 610, a clip feed shaft 660, and a sleeve 640.

The lever body 610 includes a pivotally connected lever body front section 610a and a lever body rear section 610b. The sleeve 640 includes a sleeve front section 640a and a sleeve rear section 640b that are pivotally connected. The sleeve front section 640a is sleeved outside the shaft body front section 610a to form the shaft assembly front section 600a. The sleeve rear section 640b is sleeved outside the shaft body rear section 610b to form the shaft assembly rear section 600b. A guide slot is provided in shaft body 610 for receiving clip feed bar 660, the proximal end of clip feed bar 660 being drivingly connected to operating assembly 300, operating assembly 300 being capable of driving clip feed bar 660 to move distally or proximally of the clip applier, clip feed bar 660 being resilient and capable of bending to accommodate rotation of shaft body forward section 610a relative to shaft body rearward section 610b.

The jaw assembly 400 is disposed at a distal end of the shaft assembly 600. Specifically, the jaw assembly 400 is disposed at a distal end of the shaft assembly forward section 600a. The jaw assembly 400 is driven by the shaft assembly front section 600a to rotate around the axis L relative to the shaft assembly rear section 600b, so that an operator can conveniently adjust the angle of the jaw assembly 400 to adapt to clamping requirements, and the jaw assembly is convenient to use.

The cartridge assembly 700 is disposed on the shaft assembly 600. Specifically, the cartridge assembly 700 is disposed at the shaft assembly front section 600a.

When the operation assembly 300 is triggered, the clip feeding rod 600 is driven to move, the clip 1 in the clip bin assembly 700 is pushed to the jaw assembly 400, the operation assembly 300 also drives the sleeve 640 to move distally, so that the jaw assembly 400 is driven to be closed, the clip 1 in the jaw assembly 400 is clamped on tissues or blood vessels, and accordingly the effects of hemostasis and ligation closing are achieved.

In the present embodiment, the cartridge assembly 700 is removably coupled to the shaft assembly 600. After the current clip 1 in the cartridge assembly 700 is consumed, the operator removes the cartridge assembly 700 from the shaft assembly 600 and installs a new cartridge assembly 700 on the shaft assembly 600. The detachable connection structure of the cartridge assembly 700 and the shaft assembly 600 is described in detail below.

Referring to fig. 4 and 5, fig. 4 is a cross-sectional view of the distal end of the clip applier shown in fig. 1, cartridge assembly 700 is attached to shaft assembly 600, and fig. 5 is a cross-sectional view of the distal end of the clip applier shown in fig. 1, cartridge assembly 700 being detached from shaft assembly 600. The drawing dash-dot line B is the longitudinal axis of the rod body 610, i.e., the axial direction of the rod body 610. The axial direction of the shaft body 610 is the axial direction of the shaft assembly 600. The first direction D1 is substantially perpendicular to the axial direction of the lever body 610. The second direction D2 is substantially parallel to the axial direction of the lever body 610. The third direction D3 is substantially perpendicular to the first direction D1 and the second direction D2, and the first direction D1 and the second direction D2 are located on a plane of the paper, and the third direction D3 is perpendicular to the plane of the paper.

The movement of the cartridge assembly 700 with respect to the shaft assembly 600 is restricted in a state where the cartridge assembly 700 is mounted to the shaft assembly 600, and the cartridge assembly 700 and the shaft assembly 600 can be stably coupled.

The shaft assembly 600 further includes a first abutment 620, a second abutment 630. The first and

second stoppers

620 and 630 are disposed at intervals in the axial direction of the lever body 610 on the lever body 610. Specifically, the first abutment 620 is distal to the second abutment 630.

The cartridge assembly 700 includes a housing body 2, a first limit portion 720, and a second limit portion 730. The case body 2 extends substantially in the axial direction of the lever body 610. The case main body 2 has opposite ends in the length direction thereof. The first stopper 720 is provided at one end (distal end) of the case main body 2. The second stopper 730 is provided at the other end (proximal end) of the housing main body 2. The second stopper 730 has elasticity. The terms "one end" and "the other end" are used herein to refer to a region rather than an end point.

The cartridge assembly 700 has a first state (shown in fig. 4), a second state, and a third state (shown in fig. 5) with respect to the shaft assembly 600. In response to a first external force, the cartridge assembly 700 switches from a first state to a second state. In response to a second external force, the cartridge assembly switches from the second state to the third state.

When the cartridge assembly 700 is in the first state relative to the shaft assembly 600, the first shape-fit between the first limiting portion 720 and the first retaining portion 620 is maintained, and the second shape-fit between the second limiting portion 730 and the second retaining portion 630 is maintained, so that the cartridge assembly 700 is mounted to the shaft assembly 600. "first form fit" means in particular: the first limiting portion 720 is matched with the first resisting portion 620 in shape. In a state where the first stopper 720 is in contact with the first stopper 620 in a shape matching, the relative positions of the first stopper 720 and the first stopper 620 in the predetermined direction are fixed. The meaning of "second form fit" may refer to "first form fit".

When the cartridge assembly 700 is in the second state relative to the shaft assembly 600, the first positive engagement is released and the second positive engagement remains.

When the cartridge assembly 700 is in the third state relative to the shaft assembly 600, both the first and second form fits are released. At this time, the binning assembly 700 is separated from the shaft assembly 600.

Specifically, the first form fit has an abutment state and a disengaged state. The first positive fit is in an abutting state such that it is held, and the first positive fit is in a disengaged state such that it is released. When the first shape is matched in the abutting state, the first limiting portion 720 abuts against the first resisting portion 620. The first limiting portion 720 is separated from the first resisting portion 620 when the first form fit is in the disengaged state. The second form fit has an abutting state and a disengaged state. The second form fit is in an abutting state such that it is held, and the second form fit is in a disengaged state such that it is released. When the second shape is engaged in the abutting state, the second stopper 730 abuts against the second stopper 630. The second limiting portion 730 is separated from the second resisting portion 630 when the second shape is engaged in the disengaged state.

In response to the first external force, the second limiting portion 730 deforms, allowing the cartridge assembly 700 to move entirely along the second direction D2, such that the first form fit is switched from the abutting state to the disengaged state. In response to a second external force, the second form fit is switched from the abutting state to the disengaged state.

When the cartridge assembly 700 is in the first state relative to the shaft assembly 600, the first and second form fits are both in an abutting state. When the cartridge assembly 700 is in the second state relative to the shaft assembly 600, the first positive fit is in the disengaged state and the second positive fit is in the abutting state. When the cartridge assembly 700 is in the third state relative to the shaft assembly 600, the first and second form fits are both in the disengaged state.

Referring to fig. 6, fig. 6 is a schematic illustration of the removal of cartridge assembly 700 from shaft assembly 600 in the clip applier embodiment of fig. 1. Fig. 6A to 6D are schematic views of different states of the disassembly process in fig. 6.

The process of removing the cartridge assembly 700 is as follows:

FIG. 6A is a schematic illustration of the cartridge assembly 700 mounted to the shaft assembly 600.

As shown in fig. 6B, the operator applies a first external force to the housing body 2, so that the housing body 2 moves in the second direction D2 with respect to the lever body 610. Under the blocking of the second blocking portion 630, the second limiting portion 730 elastically deforms, and the case body 2 continues to move in the second direction D2, so that the first limiting portion 720 is disengaged from the first blocking portion 620.

As shown in fig. 6C, a second external force is applied to the case body 2 such that the case body 2 is rotated substantially clockwise (direction indicated by arrow in fig. 6C) by an angle such that the distal end of the case body 2 is away from the lever body 610 (cocked).

As shown in fig. 6D, the case main body 2 is taken away obliquely to the upper left (indicated by an arrow in fig. 6D).

The process of installing the cartridge assembly 700 may be the reverse of the process of removing the cartridge assembly 700 described above.

In the present embodiment, in the first state, the first shape-fit formed by the first limiting portion 720 and the first resisting portion 620 is maintained, and the second shape-fit formed by the second limiting portion 730 and the second resisting portion 630 is maintained, so that the cartridge assembly 700 is mounted to the shaft assembly 600. Since the second limiting part 730 has elasticity, the second limiting part 730 is elastically deformed under the action of the first external force, so that the cartridge assembly 700 can move relative to the shaft assembly 600 to release the first shape fit. After the first form fit is released, the second form fit is released under the influence of a second external force, thereby removing the cartridge assembly 700 from the shaft assembly 600. The cartridge assembly 700 can be disassembled or assembled by deforming the second stop 730. Therefore, the cartridge assembly 700 is convenient for the operator to detach and replace the cartridge assembly 700 later on under the premise of ensuring that the cartridge assembly 700 can be fixed with the shaft assembly 600 in the use process.

In addition, clip appliers are used in the field of minimally invasive medical procedures, it is desirable to ensure that the radial dimension of shaft assembly 600 is as small as possible. In this embodiment, the first limiting portion 720 and the second limiting portion 730 are respectively disposed at two ends of the shell body 2 along the axial direction of the shaft assembly 600, so that the radial space of the shaft assembly 600 is not required.

Referring to fig. 4, the first shape matching of the first limiting portion 720 and the first resisting portion 620 is described in detail below.

When the cartridge assembly 700 is in the first state relative to the shaft assembly 600, the first stop 720 and the first abutment 620 form a first positive fit to limit some degrees of freedom of movement of the distal end of the housing body 2 relative to the shaft body 610.

Specifically, the projections of the first resisting portion 620 and the first limiting portion 720 along the first direction D1 at least partially overlap. The first stopping portion 620 and the first limiting portion 720 are abutted in the first direction D1 to limit the distal end of the housing body 2 from moving relative to the lever body 610 in the first direction D1. The projections of the first resisting portion 620 and the first limiting portion 720 along the second direction D2 at least partially overlap. The first catching portion 620 and the first limiting portion 720 abut in the second direction D2 to limit the distal end of the housing body 2 from moving relative to the lever body 610 in the opposite direction of the second direction D2.

More specifically, the first abutment 620 includes a first connecting section 621 and a first snap-fit section 622. The first connecting section 621 is provided to the lever body 610, extending in a direction at an angle to the axial direction of the lever body 610. Specifically, the first connecting segment 621 extends generally in the first direction D1. The first snap-fit segment 622 is a protrusion extending generally axially along the stem body 610. Specifically, the first fastening portion 622 is substantially protruding from the first connecting portion 621 along the second direction D2. In this embodiment, the lever body 610, the first connecting section 621 and the first fastening section 622 are integrally formed.

The first limiting portion 720 includes a second connecting section 721 and a second fastening section 722. The second connection section 721 is provided to the housing body 2, extending in a direction at an angle to the axial direction of the lever body 610. Specifically, the second connection section 721 extends substantially in the opposite direction of the first direction D1. The second fastening section 722 is disposed at an extension end of the second connecting section 721. The second snap-fit segment 722 is a protrusion extending generally axially along the stem body 610. Specifically, the second fastening section 722 protrudes from the second connecting section 721 along the opposite direction of the second direction D2. In this embodiment, the housing main body 2, the second connecting section 721 and the second fastening section 722 are integrally formed.

When the cartridge assembly 700 is in the first state relative to the shaft assembly 600, the first connecting section 621 and the second connecting section 721 are spaced apart in the second direction D2, and the second connecting section 721 is located on the right side of the first connecting section 621. The second fastening section 722 and the first fastening section 622 are located between the first connecting section 621 and the second connecting section 721, and the second fastening section 722 is located below the first fastening section 622. The first buckling section 622 abuts against the second buckling section 722 along the first direction D1 to limit the distal end of the housing body 2 to move along the first direction D1. The first buckling section 622 abuts against the second connecting section 721 along the second direction D2 to limit the distal end of the housing main body 2 from moving in the opposite direction D2.

In addition, with continued reference to fig. 4, to facilitate installation of the cartridge assembly 700, the first snap-fit section 622 and/or the second snap-fit section 722 are further provided with a guide ramp. In this embodiment, the first engaging section 622 is provided with a first guiding slope 623, and the second engaging section 722 is provided with a second guiding slope 723.

Referring to fig. 7, fig. 7 is a schematic view of one manner in which the clip applier assembly 700 is mounted to the shaft assembly 600 in the embodiment of the clip applier shown in fig. 1.

Taking the placement angle of the clip applier and the cartridge assembly 700 in fig. 7 as a reference, the cartridge assembly 700 is inserted into the shaft assembly 600 obliquely downward and rightward, so that the second limiting portion 730 and the second resisting portion 630 form a second shape fit.

The distal end of the housing main body 2 is pressed in the reverse (downward) direction of the first direction D1, and the distal end of the housing main body 2 is rotated substantially counterclockwise (as indicated by an arrow in the figure). Under the guidance of the first guiding inclined plane 623 and the second guiding inclined plane 723, after the housing main body 2 moves along the second direction D2 and the second fastening section 722 moves to the side lower part of the first fastening section 622, the housing main body 2 moves in the opposite direction along the second direction D2 under the elastic force of the second limiting part 730, so that the second fastening section 722 moves to the position right under the first fastening section 622, and the first shape fit formed by the first limiting part 720 and the first resisting part 620 is maintained.

Referring to fig. 4, the second shape matching of the second limiting portion 730 and the second resisting portion 630 will be described in detail below.

When the cartridge assembly 700 is in the first state relative to the shaft assembly 600, the second stop 730 cooperates with the second abutment 630 to form a second shape that limits some degrees of freedom in movement of the proximal end of the housing body 2 relative to the shaft body 610.

The projections of the second resisting portion 630 and the second limiting portion 730 along the first direction D1 at least partially overlap. The second abutment 630 and the second stopper 730 abut in the first direction D1 to restrict the proximal end of the housing body 2 from moving relative to the lever body 610 in the first direction D1. The projections of the second resisting portion 630 and the second limiting portion 730 along the second direction D2 at least partially overlap. The second abutment 630 and the second stopper 730 abut in the second direction D2 to restrict the proximal end of the housing body 2 from moving relative to the lever body 610 in the second direction D2.

Specifically, the second abutment 630 includes a third connecting segment 631 and a third snap segment 632. The third connecting section 631 is provided to the lever body 610 and extends in a direction that is angled with respect to the axial direction of the lever body 610. Specifically, the third connecting section 631 extends generally in the first direction D1 with the third connecting section 631 forming an angle with the axial direction of the lever body 610 that is generally at a right angle. The third snap-fit segment 632 is a protrusion extending generally axially along the stem body 610. Specifically, the third fastening section 632 is substantially protruded along the reverse direction of the second direction D2 and disposed on the third connecting section 631. In this embodiment, the lever body 610, the third connecting section 631 and the third fastening section 632 are integrally formed.

The second limiting portion 730 includes a fourth connecting section 731 and a fourth fastening section 732. The fourth connection section 731 is provided to the case body 2, extending in a direction at an angle to the axial direction of the lever body 610. Specifically, the fourth connecting segment 731 extends in both the first direction D1 and the second direction D2, and the fourth connecting segment 731 forms an acute angle with the axial direction of the shaft body 610. The fourth connection section 731 forms a relief space 760 (see portion 6C in fig. 6) with the case main body 2. During disassembly of the cartridge assembly 700, the fourth connection segment 731 is prevented from interfering with the second abutment 630. The fourth fastening section 732 is disposed at an extended end of the fourth connecting section 731. The fourth snap-fit segment 732 is a protrusion extending generally axially along the stem body 610. Specifically, the fourth fastening section 732 protrudes from the fourth connecting section 731 along the second direction D2. In this embodiment, the housing main body 2, the fourth connecting section 731, and the fourth fastening section 732 are integrally formed.

When the cartridge assembly 700 is in the first state relative to the shaft assembly 600, the third connecting section 631 and the fourth connecting section 731 are spaced apart in the second direction D2 and the third connecting section 631 is located to the right of the fourth connecting section 731. The third fastening section 632 and the fourth fastening section 732 are located between the third connecting section 631 and the fourth connecting section 731, and the fourth fastening section 732 is located below the third fastening section 632. The fourth fastening section 732 abuts against the third fastening section 632 along the first direction D1 to limit the proximal end of the housing body 2 from moving along the first direction D1. The fourth fastening section 732 abuts against the third connecting section 631 in the second direction D2 to limit the proximal end of the housing body 2 from moving in the second direction D2.

In addition, with continued reference to fig. 4, to facilitate installation of cartridge assembly 700, third snap-fit section 632 and/or fourth snap-fit section 732 are further provided with a guide ramp. In the present embodiment, the third fastening section 632 is provided with a third guiding inclined surface 633, and the fourth fastening section 732 is provided with a fourth guiding inclined surface 733.

Referring to fig. 8, fig. 8 is a schematic view of one manner in which the clip applier assembly 700 is mounted to the shaft assembly 600 in the embodiment of the clip applier shown in fig. 1.

Taking the placement angle of the clip applier and the cartridge assembly 700 in fig. 8 as a reference, the cartridge assembly 700 is inserted into the shaft assembly 600 obliquely to the left and the lower, so that the first limiting portion 720 and the first resisting portion 620 form a first shape fit.

The proximal end of the housing body 2 is pressed in the reverse (downward) direction of the first direction D1, and the proximal end of the housing body 2 is rotated substantially clockwise (as indicated by an arrow in the drawing). During the moving process of the proximal end of the shell main body 2, after the second limiting part 730 is slightly deformed and avoided from the second resisting part 630 under the guidance of the third guiding inclined plane 633 and the fourth guiding inclined plane 733, the fourth buckling section 732 of the second limiting part 730 moves to the position right below the third buckling section 632, so that the second shape matching formed by the second limiting part 730 and the second resisting part 630 is maintained.

Referring to fig. 5, the shaft assembly 600 further includes a third catching portion 611 provided to the shaft body 610, and the cartridge assembly 700 further includes a third limiting portion 751 provided to the housing body 2. When the cartridge assembly 700 is in the first state relative to the shaft assembly 600, the third limiting portion 751 and the third resisting portion 611 together form a limiting structure to limit movement of the housing body 2 relative to the shaft body 610 in a direction opposite to the first direction D1.

Further, the third catching portion 611 and the third stopper portion 751 are a pair of opposite surfaces of the lever body 610 and the case body 2 in the first direction D1. The lever body 610 is matched with a pair of opposite surfaces of the case body 2 in the first direction D1 so that the case body 2 can be stably fitted to the lever body 610. The third abutment 611 is a bearing surface on the lever body 610. The housing body 2 is carried on the carrying surface to limit movement of the housing body 2 relative to the lever body 610 in a direction opposite to the first direction D1. In this embodiment, the bearing surface is a plane substantially perpendicular to the first direction D1. The first resisting portion 620 and the second resisting portion 630 are both disposed on the bearing surface in a protruding manner, so as to fix the housing body 2 to the bearing surface, i.e. prevent the housing body 2 from being separated from the bearing surface along the first direction D1. Alternatively, the third abutment 611 and/or the third stop 751 may be a protrusion, a recess, or a portion of the surface other than the protrusion or recess.

Referring now to FIGS. 4, 9 and 10, FIG. 9 is a cross-sectional view H1-H1 of FIG. 4 and FIG. 10 is a schematic view of the three-dimensional structure of the distal end of sleeve 640 of the clip applier of FIG. 1.

The sleeve 640 restricts movement of the housing body 2 relative to the shaft body 610 in the third direction D3 and in a direction opposite the third direction D3 when the cartridge assembly 700 is in the first state relative to the shaft assembly 600.

The sleeve 640 has an opening 641 at a position corresponding to the cartridge assembly 700 to allow the cartridge assembly 700 to be disassembled and clamped through the opening 641. The opening 641 has a pair of edges 642 extending in the axial direction of the rod body 610, which are located on opposite sides of the case body 2, respectively, and abut against the case body 2, respectively. One of the edges 642 serves to restrict movement of the case body 2 in the third direction D3, and the other edge 642 serves to restrict reverse movement of the case body 2 in the third direction D3.

To avoid cartridge assembly 700, sleeve 640 is further notched 643.

Referring to fig. 5, in order to facilitate an operator to toggle the cartridge assembly 700 and further apply a first external force and a second external force to the cartridge assembly 700, the cartridge assembly 700 has a force receiving portion 740. The force receiving portion 740 is provided at an upper portion of the case main body 2. The force receiving portion 740 is a groove or a protrusion. In this embodiment, the stress portion 740 is a plurality of grooves on the shell body 2 that are axially spaced along the rod body 610.

Referring to fig. 5, the clip applier can optionally further include a spring 650. When the cartridge assembly 700 is in the first state relative to the shaft assembly 600, one end of the elastic member 650 elastically abuts against the shaft body 610, and the other end elastically abuts against the housing body 2. The elastic member 650 is compressed and contracted. The elastic member 650 may be a spring. After releasing the first form fit, the elastic member 650 can drive the distal end of the case body 2 to tilt, facilitating the subsequent action. The elastic member 650 is not necessary.

In this embodiment, the stacking manner of the clips 1 in the cartridge assembly 700 is different from the prior art, and is described in detail below.

Referring to fig. 11, fig. 11 is a schematic cross-sectional view showing a structure in which a plurality of clips 1a are stacked in a housing main body 2a in the prior art.

In the prior art, the cartridge assembly 700a includes a housing body 2a, a plurality of clips 1a, and an elastic member 218a. The case main body 2a has a clip cavity to accommodate a plurality of clips 1a. A plurality of clips 1a are stacked in the case main body 2a, and projections in the stacking direction F1 can be overlapped. In use, the clip feed lever (not shown) pushes the lowermost clip 1a out of the housing body 2a in the clip-out direction F2, and the elastic member 218a pushes the remaining clips 1a integrally downward in the stacking direction F1, so that the clip feed lever can continue pushing the clip 1a below out of the housing body 2a until all clips 1a are pushed out of the housing body 2a.

Referring to fig. 12, fig. 12 is a schematic three-dimensional view of the clip applier shown in fig. 1.

The clip includes a clip arm and a protrusion disposed on the clip arm. Specifically, the clip 1 includes a first clip arm 104 and a second clip arm 105. The first arm 104 of the clip 1 has opposite upper and lower side walls 111 and 112 in the height direction F3, the upper side wall 111 of the first arm 104 has one first convex portion 106, and the lower side wall 112 of the first arm 104 also has one first convex portion 106. The second clamp arm 105 has an upper side wall 111 and a lower side wall 112 opposite to each other in the height direction F3, the upper side wall 111 of the second clamp arm 105 has one second convex portion 107, the lower side wall 112 of the second clamp arm 105 also has one second convex portion 107, the two second convex portions 107 are connected by a bump 108, specifically, the lower end of the second convex portion 107 of the upper side wall 111 of the second clamp arm 105 is connected with the upper end of the second convex portion 107 of the lower side wall 112 of the second clamp arm 105 by a bump 108. In this embodiment, the two second protrusions 107 are integral with the bump 108 to facilitate molding. The intermediate bump 108 may be omitted in other embodiments.

The clip 1 extends substantially in the longitudinal direction F4. Clip 1 has opposite first and second ends 109, 110 along length direction F4. The first end 109 is a region and not an end point and the second end 110 is a region and not an end point. Each first tab 106 and each second tab 107 of clip 1 are proximate to a first end 109 of clip 1 and distal to a second end 110 of clip 1. Preferably, each first tab 106 of clip 1 is located at first end 109.

Referring to fig. 13, fig. 13 is a schematic view of the clip of fig. 12 stacked in accordance with a prior art stacking method.

After stacking in the stacking manner according to the related art, two first protrusions 106 abut against each other and two second protrusions 107 abut against each other in two adjacent clips 1, and two second clip arms 105 have a gap a (two first clip arms 104 also have a gap a) in the stacking direction (height direction F3), and the presence of the gap a makes the size of the stacked clips 1 in the stacking direction still further have room for optimization. In addition, the clip 1 adopts the stacking manner shown in fig. 13, and the structural stability is also provided with a space to be further optimized.

In order to improve the space utilization rate of the shell main body and stack the clips as much as possible, in this embodiment, a plurality of clips are accommodated in the shell main body and stacked in a staggered manner, so that the convex portions of two adjacent clips are staggered.

Please refer to fig. 14 to fig. 16. Fig. 14 is a schematic three-dimensional view of the clip applier cartridge assembly 700 shown in fig. 1. Fig. 15 is a schematic view of the cartridge assembly 700 of fig. 14 with the first side 209 omitted to view the clip 1. Fig. 16 is a three-dimensional schematic view of the stacked state of a plurality of clips 1 in the cartridge assembly 700 shown in fig. 14.

The cartridge assembly 700 includes a housing body 2 and a plurality of clips 1. The case body 2 has a clip cavity to accommodate the clip 1.

Clip 1 is the clip shown in fig. 12. Each clip 1 includes a clip arm and a convex portion provided on the clip arm. The plurality of clips 1 are accommodated in the case main body 2 and stacked in a staggered manner such that the convex portions of the adjacent two clips 1 are staggered. Staggered stacking: the projections in the stacking direction (width direction F6 in this embodiment) are only partially overlapped by the projections of the clips 1.

Specifically, the cartridge assembly 700 includes three clips 1, and for convenience of description, the three clips 1 are named as a clip 101, a clip 102, and a clip 103 in order. In the initial state, the clip 101 and the clip 102 are disposed in the first cavity 203, and the clip 103 is disposed in the second cavity 204 (see fig. 17). The number of clips 1 does not interfere with the proper use of the cartridge assembly 700, and the number of clips 1 can be adjusted by the operator according to the specific application requirements.

The first protrusion 106 and the second protrusion 107 of the lower side wall of the clip 101 are in contact with the upper side wall of the clip 102, and the second protrusion 107 of the upper side wall of the clip 102 is in contact with the lower side wall of the clip 101. More specifically, the first convex portion 106 of the lower side wall of the first arm 104 of the clip 101 abuts against the upper side wall of the first arm 104 of the clip 102, and the second convex portion 107 of the lower side wall of the second arm 105 of the clip 101 abuts against the upper side wall of the second arm 105 of the clip 102. The second protrusion 107 of the upper side wall of the second arm 105 of the clip 102 abuts against the lower side wall of the second arm 105 of the clip 101.

The first protrusion 106 and the second protrusion 107 of the lower side wall of the clip 102 are in contact with the upper side wall of the clip 103, and the second protrusion 107 of the upper side wall of the clip 103 is in contact with the lower side wall of the clip 102. More specifically, the first convex portion 106 of the lower side wall of the first arm 104 of the clip 102 abuts against the upper side wall of the first arm 104 of the clip 103, and the second convex portion 107 of the lower side wall of the second arm 105 of the clip 102 abuts against the upper side wall of the second arm 105 of the clip 103. The second protrusion 107 of the upper side wall of the second arm 105 of the clip 103 abuts against the lower side wall of the second arm 105 of the clip 102.

To sum up, clips 101, 102, 103 are stacked in the width direction F6, thereby enabling space saving such that the footprint of cartridge assembly 700 is small. The first protrusion 106 of the clip 102 is offset from the first protrusion 106 of the clip 101, and the second protrusion 107 of the clip 102 is also offset from the second protrusion 107 of the clip 101. The first protrusion 106 of the clip 103 is offset from the first protrusion 106 of the clip 102, and the second protrusion 107 of the clip 103 is also offset from the second protrusion 107 of the clip 102. The projection of the first convex portion 106 of the clip 102 and the projection of the first convex portion 106 of the clip 101 in the width direction F6 do not overlap, and the projection of the second convex portion 107 of the clip 102 and the projection of the second convex portion 107 of the clip 101 in the width direction F6 do not overlap. There is no overlapping portion of the projection of the first convex portion 106 of the clip 103 and the first convex portion 106 of the clip 102 in the width direction F6, nor is there an overlapping portion of the projection of the second convex portion 107 of the clip 103 and the second convex portion 107 of the clip 102 in the width direction F6, so that adjacent convex portions can be avoided from each other, further the occupied space of the clip 1 can be reduced, and the stacking stability of the clip 1 in the case main body 2 can be improved.

Referring to fig. 17, fig. 17 is a schematic three-dimensional structure of the housing body 2 of the cartridge assembly 700 shown in fig. 14, with the first side 209 omitted.

The clamping cavity of the housing body 2 includes a first cavity 203 and a second cavity 204. The first cavity 203 and the second cavity 204 are disposed in this order in the width direction F6, and communicate. The first cavity 203 is disposed above the second cavity 204. The second cavity 204 is provided through the case main body 2. Specifically, the second cavity 204 extends along the length direction F5, the second cavity 204 forms a first opening 205 at the first end 201 of the housing body 2, and the second cavity 204 forms a second opening 206 at the second end 202 of the housing body 2.

The clip 1 is operable to be removed from the housing body 2. In response to a reverse force applied to the clip 103 in the length direction F5, the clip 103 disengages the housing body 2 from the first opening 205, and a biasing assembly 222 (explained below) pushes down on the clip 101 and the clip 102 such that the clip 102 enters the second cavity 204. When clip 102 is disengaged from housing body 2, biasing assembly 222 again urges clip 101 into second cavity 204.

The inner wall of the upper wall of the second cavity 204 is provided with a first groove 207 and a second groove 208. The inner wall of the lower wall portion of the second cavity 204 is also provided with a first groove 207 and a second groove 208. The first protrusion 106 of the upper side wall of the clip 1 is operable to be located in the first recess 207 of the upper wall of the second cavity 204 and the second protrusion 107 of the upper side wall of the clip 1 is operable to be located in the second recess 208 of the upper wall of the second cavity 204. The first protrusion 106 of the lower side wall of the clip 1 is operable to be located in the first recess 207 of the lower wall of the second cavity 204, and the second protrusion 107 of the lower side wall of the clip 1 is operable to be located in the second recess 208 of the lower wall of the second cavity 204. Thereby enabling the clip 1 to be stably placed in the second cavity 204. Each first groove 207 and each second groove 208 extend through the first end 201 of the cartridge assembly 700 such that the clip 1 within the second cavity 204 can be stably disengaged from the first end 201 of the housing body 2 from the housing body 2.

Referring to fig. 15, the cartridge assembly 700 further includes a biasing assembly 222, wherein the biasing assembly 222 is disposed on the housing body 2. Specifically, the biasing assembly 222 is disposed in the first cavity 203 of the housing body 2. The biasing assembly 222 is capable of applying a force to the clip 1 in a generally widthwise direction F6 such that the clip 1 in the first cavity 203 is able to enter the second cavity 204, which force also helps the clip 1 to be stably held within the housing main body 2.

Referring also to fig. 18, fig. 18 is an exploded view of the biasing assembly of the cartridge assembly 700 of fig. 14.

The biasing assembly 222 includes a spindle 221, a spring 218, a connecting arm 220, and a push plate 219.

The connection arm 220 is rotatably provided in the case main body 2 through a rotation shaft 221. In fig. 18, the right end (free end) of the link arm 220 is rotatable about the left end.

The push plate 219 is rotatably disposed on the connection arm 220, and is used for abutting against the clip 1, and pushing against the clip 1 under the driving of the connection arm 220. Specifically, the push plate 219 is disposed at the free end of the connecting arm 220. The push plate 219 abuts the upper side wall of the clip 101 and the push plate 219 may be rigid or at least substantially rigid. The push plate 219 can apply a force in the width direction F6 to the clip 101 under the drive of the link arm 220.

For ease of manufacture and assembly, the push plate 219 is removably attached to the connecting arm 220. Specifically, the free end of the connecting arm 220 is provided with an opening 2201, the opening 2201 having a generally cylindrical edge 2202, the edge 2202 being located on a side of the opening 2201 remote from the rotational center of the connecting arm 220. The push plate 219 has a body 2191 and an elastic buckle 2192 provided on the body 2191. The elastic buckle 2192 is used for being clamped to the edge 2202, so as to realize the rotary connection between the push plate 219 and the connecting arm 220. The body 2191 is used to push against the clip 1.

The elastic member 218 is configured to apply elastic force to the connection arm 220 to drive the connection arm 220 to rotate. In this embodiment, the elastic member 218 is a torsion spring.

When the clip 1 is filled in the case main body 2, the elastic member 218 is elastically deformed, and elastic potential energy is stored. When one clip 1 is pushed out of the housing body 1, the elastic member 218 releases elastic potential energy to rotate the connecting arm 220, so that the connecting arm 220 drives the push plate 219 to move to push the rest clips 1.

Referring to fig. 15 to 17, the case main body 2 extends substantially in the length direction F5. The housing body 2 has opposite first and second ends 201, 202 along the length direction F5. It should be noted that, the first end 201 is a region and not an endpoint, and the second end 202 is a region and not an endpoint.

The first tab 106 of the clip 102 is closer to the first end 201 of the cartridge assembly 700 than the first tab 106 of the clip 101 and the second tab 107 of the clip 102 is closer to the first end 201 of the cartridge assembly 700 than the second tab 107 of the clip 101, whereby the first tab 106 and the second tab 107 of the clip 101 do not interfere with movement of the clip 102 when the clip 102 is moved toward the first end 201 of the housing body 2.

The first tab 106 of the clip 103 is closer to the first end 201 of the housing body 2 than the first tab 106 of the clip 102. The second protrusion 107 of the clip 103 is closer to the first end 201 of the housing body 2 than the second protrusion 107 of the clip 102. Thus, when the clip 103 moves toward the first end 201 of the case main body 2, the first protrusion 106 and the second protrusion 107 of the clip 102 do not interfere with the movement of the clip 103.

For three clips 1 in the housing body 2, the first ends 109 thereof are not aligned in the width direction F6, the first ends 109 of the clips 101 are furthest from the first end 201 of the housing body 2, and the first ends 109 of the clips 103 are closest to the first end 201 of the housing body 2. Likewise, the second ends 110 of the three clips 1 are also not aligned in the width direction F6, the second ends 110 of the clips 101 being closest to the second end 202 of the housing body 2, and the second ends 110 of the clips 103 being furthest from the second end 202 of the housing body 2.

A limiting inclined surface 214 is provided in the first cavity 203, and the limiting inclined surface 214 abuts against the second end 110 of the clip 1 in the first cavity 203. Thereby, the clip 1 in the first cavity 203 can be supported by the stopper slope 214. That is, the first end 109 of the clip 101 is supported on the clip 102, specifically, the first end 109 of the clip 101 is supported on the clip 102 by the first protrusion 106 and the second protrusion 107 of the lower side wall thereof, and the second end 110 of the clip 101 is supported on the limiting slope 214. The first end 109 of the clip 102 is supported on the clip 103, specifically, the first end 109 of the clip 102 is supported on the clip 103 by the first and

second bosses

106, 107 of the lower side wall thereof, and the second end 110 of the clip 102 is supported on the limiting ramp 214. In this embodiment, the limiting slope 214 is preferably provided on the mounting block 215, whereby further space saving is enabled, when the mounting block 215 is provided adjacent to the second end 202 of the housing body 2.

The case main body 2 in this embodiment has opposite first and

second side portions

209 and 210 in the thickness direction F7. The length direction F5, the width direction F6, and the thickness direction F7 are perpendicular to each other. The case main body 2 has opposite third and

fourth side portions

211 and 212 in the width direction F6.

The case main body 2 further includes a stopper 213, and the stopper 213 has elasticity. The stopper 213 is disposed at the first side 209 of the housing body 2, and the stopper 213 is disposed in the second cavity 204. The stopper 213 abuts against the clip 1 located in the second cavity 204.

Specifically, as described above, the lower end of the second protrusion 107 of the upper side wall of the second arm 105 of the clip 1 is connected to the upper end of the second protrusion 107 of the lower side wall of the second arm 105 thereof by the bump 108. The stopper 213 abuts against the bump 108 of the clip 1 located in the second cavity 204. In response to the force applied to the clip 1 in the longitudinal direction F5, the protrusion 108 of the clip 1 in the second cavity 204 is disengaged from the stopper 213, and the clip 1 is disengaged from the second cavity 204 from the first opening 205. The stopper 213 may abut against the convex portion 107 of the clip 1 to perform the stopper.

In this embodiment, the biasing member 222 is provided so that the clip 1 can be stably held in the clip cavity. Through setting up locating part 213 and spacing inclined plane 214, can further carry out spacingly to clip 1 for clip 1 is arranged in the clamp chamber more steadily. Specifically, the stopper 213 extends in the length direction F5, the stopper 213 is recessed into the clip cavity, so that the stopper 213 applies a force to the boss 108 of the clip 103 toward the second end 202 of the case main body 2 in the length direction F5, the second protrusion 107 of the upper side wall of the clip 103 abuts against the second protrusion 107 of the lower side wall of the clip 102 in the length direction F5, the second protrusion 107 of the upper side wall of the clip 102 abuts against the second protrusion 107 of the lower side wall of the clip 101 in the length direction F5, the second end 110 of the clip 102 abuts against the stopper slope 214, and the second end 110 of the clip 101 abuts against the stopper slope 214, and therefore, the clip 102 can cooperate with the stopper 213 to exert a stopper effect on the clip 103, while the clip 102 cooperates with the stopper slope 214 to exert a stopper effect on the clip 101, whereby the clips 101, 102 and the clip 103 mutually exert a stopper effect on each other in the length direction F5, while the first end 109 of the clip 101 is supported on the clip 102 and the second end 110 of the clip 101 is supported on the stopper slope 214. The first end 109 of the clip 102 is supported on the clip 103, the second end 110 of the clip 102 is supported on the limiting ramp 214, and the biasing assembly applies a force to the clip 1 in the generally widthwise direction F6, enabling the clip 1 to be stably clamped within the clamping cavity of the housing body 2. Clip 101 can be disposed substantially along longitudinal direction F5. The clip 102 can also be disposed generally along the length direction F5, such that the second end 110 of the clip 102 does not fall into the second cavity 204, thereby not affecting the use of the clip 103.

To facilitate mounting of the clip 1 into the housing body 2, the first side 209 is detachably connected to the housing body 2.

Referring to fig. 19, fig. 19 is a schematic view of a first side 209 of the cartridge assembly 700 of fig. 14.

The upper end of the first side portion 209 is provided with two clamping pieces, and the lower end of the first side portion 209 is also provided with two clamping pieces. Each of the snap-fit members includes a first mounting portion 2091, a second mounting portion 2092, and a third mounting portion 2093. For each of the locking members at the upper end of the first side portion 209, the first mounting portion 2091 is disposed on the outer wall of the third side portion 211, the second mounting portion 2092 is disposed on the outer wall of the second side portion 210, and the third mounting portion 2093 is embedded in the second side portion 210. For each of the locking members at the lower end of the second side portion 210, the first mounting portion 2091 is disposed on the outer wall of the fourth side portion 212, the second mounting portion 2092 is disposed on the outer wall of the second side portion 210, and the third mounting portion 2093 is embedded in the second side portion 210.

In the clamp bin assembly, a plurality of clamps are stacked in the shell body in a staggered mode, protruding portions of adjacent clamps can be mutually avoided, namely, protruding portions of one clamp are abutted with clamp arms of the other clamp instead of protruding portions of two clamps in two adjacent clamps. Compared with the stacking mode in the prior art, the overall height of the stacked clamps is reduced, the space utilization rate of the shell main body is improved, and meanwhile, the stability of the stacked clamps in the shell main body can be improved.

To sum up, this application clamp and clamp storehouse subassembly is guaranteeing to press from both sides under the fixed prerequisite of storehouse subassembly and pole body subassembly in the use, and the follow-up dismantlement of operating personnel of being convenient for again presss from both sides the storehouse subassembly.

It should be understood that, although the present disclosure describes embodiments, not every embodiment contains only one independent technical solution, and the description is merely for clarity, and those skilled in the art should consider the disclosure as a whole, and the technical solutions in the embodiments may be combined appropriately to form other embodiments that can be understood by those skilled in the art.

The above list of detailed descriptions is only specific to practical embodiments of the present application, and they are not intended to limit the scope of the present application, and all equivalent embodiments or modifications that do not depart from the spirit of the technical spirit of the present application are included in the scope of the present application.

Claims

1. A clip applier characterized by comprising:

the rod body assembly comprises a rod main body, a first resisting part and a second resisting part, wherein the first resisting part is arranged on the rod main body, and the second resisting part is arranged at intervals with the first resisting part along the axial direction of the rod main body;

A cartridge assembly, the cartridge assembly comprising:

a case main body;

the clamps comprise clamp arms and protruding parts arranged on the clamp arms, the clamps are accommodated in the shell main body and are stacked in a staggered mode, and therefore the protruding parts of two adjacent clamps are staggered;

the first limiting part is arranged at one end of the shell main body;

the second limiting part is arranged at the other end of the shell main body and has elasticity;

wherein the cartridge assembly has first, second, and third states relative to the shaft assembly; in the first state, a first shape fit formed by the first limiting part and the first resisting part is kept, and a second shape fit formed by the second limiting part and the second resisting part is kept, so that the cartridge clamping assembly is mounted on the rod body assembly; in response to a first external force, the cartridge assembly switches from the first state to the second state, in which the first positive fit is released and the second positive fit is maintained; in response to a second external force, the cartridge assembly switches from the second state to the third state, in which the second form fit is released.

2. The clip applier of claim 1, wherein,

the first form fit and the second form fit each have an abutting state and a disengaged state; the first positive fit being in the abutment state such that it is held, the first positive fit being in the disengagement state such that it is released; the second form fit being in the abutment state such that it is held, the second form fit being in the disengagement state such that it is released;

in the first state, the first form fit is in the abutting state, and the second form fit is in the abutting state;

in the second state, the first form fit is in the disengaged state and the second form fit is in the abutting state;

in the third state, the first form fit is in the disengaged state and the second form fit is in the disengaged state.

3. The clip applier of claim 2, wherein,

and responding to the first external force, the second limiting part deforms to enable the first shape fit to be switched from the abutting state to the disengaging state, and further enable the bin clamping assembly to be switched from the first state to the second state.

4. The clip applier of claim 3, wherein said first stop portion and said second stop portion each comprise:

a connection section provided to the case body, extending in a direction at an angle to an axial direction of the lever body;

the buckling section is arranged at the extending tail end of the connecting section.

5. The clip applier of claim 4, wherein,

the angle between the connecting section of the first limiting part and the axial direction of the rod main body is a right angle;

the angle between the connecting section of the second limiting part and the axial direction of the rod main body is an acute angle.

6. The clip applier of claim 4, wherein,

the snap-fit segment is a protrusion extending generally axially along the stem body.

7. The clip applier of claim 6, wherein,

the buckling section of the second limiting part is opposite to the extending direction of the buckling section of the first limiting part.

8. The clip applier of claim 1, wherein said cartridge assembly comprises:

the stress part is arranged on the upper part of the shell main body, so that an operator can apply the first external force and the second external force to the clamping bin assembly.

9. The clip applier of claim 8, wherein,

the stress part is a groove or a bulge.

10. The clip applier of claim 1, wherein said clip applier comprises:

and one end of the elastic piece is elastically propped against the rod main body, and the other end of the elastic piece is elastically propped against the shell main body.

11. The clip applier of claim 1, wherein,

in the first state, the housing body is carried by the lever body.

12. The clip applier of claim 1, wherein said shaft assembly further comprises:

the sleeve is sleeved outside the rod main body, can reciprocate along the axial direction of the rod main body so as to drive the jaw assembly of the clip applier to open or close, the sleeve is provided with an opening at the position corresponding to the clamping bin assembly, and a pair of edges of the opening extending along the axial direction of the rod main body are respectively positioned on two opposite sides of the shell main body and respectively abutted with the shell main body.

13. A cartridge assembly for a clip applier having a shaft assembly, the cartridge assembly comprising:

a case main body;

The first limiting part is arranged at one end of the shell main body;

wherein the cartridge assembly has first, second, and third states relative to the shaft assembly; in the first state, a first shape fit formed by the first limiting part and the rod body assembly is maintained, and a second shape fit formed by the second limiting part and the rod body assembly is maintained, so that the cartridge assembly is mounted on the rod body assembly; in response to a first external force, the cartridge assembly switches from the first state to the second state, in which the first positive fit is released and the second positive fit is maintained; in response to a second external force, the cartridge assembly switches from the second state to the third state, in which the second form fit is released.

14. The cartridge assembly of claim 13, wherein the first stop portion and the second stop portion each comprise:

the connecting section is arranged on the shell main body and extends along the direction forming an angle with the length direction of the shell main body;

15. The cartridge assembly of claim 14 wherein,

the angle between the connecting section of the first limiting part and the length direction of the shell main body is a right angle;

the included angle between the connecting section of the second limiting part and the length direction of the shell main body is an acute angle.

16. The cartridge assembly of claim 14 wherein,

the snap-fit section is a protrusion extending generally along the length of the shell body.

17. The cartridge assembly of claim 14 wherein,

18. The cartridge assembly of claim 13, comprising:

the force receiving part is arranged on the upper part of the shell main body, so that an operator can apply the external force to the clamping bin assembly.

19. The cartridge assembly of claim 18 wherein,

the stress part is a groove or a bulge.