clip applier

Abstract

A clip applier includes a jaw assembly and a handle assembly; the jaw assembly includes a first jaw arm and a second jaw arm; the handle assembly is configured to mount a clip cartridge, the clip cartridge is configured to store a clip, the clip includes a first clip arm and a second clip arm; the handle assembly includes a clip ejection mechanism, the clip ejection mechanism includes a first clip ejection plate and a second clip ejection plate which are spaced apart; at least one of the first clip ejection plate and the second clip ejection plate includes a first guide slot, and at least one of the first clip ejection plate and the second clip ejection plate includes a second guide slot; the first guide slot is configured to guide at least a portion of the first clip arm of the clip to enter the first jaw arm when the clip moves from the clip cartridge to the jaw assembly, and the second guide slot is configured to guide at least a portion of the second clip arm of the clip to enter the second jaw arm when the clip moves from the clip cartridge to the jaw assembly. Thus, the clip applier can avoid the clip from being twisted.

Description

Clip applier

[0001] This patent application claims priority to Chinese Patent Application No. 202411280676.0, filed on September 12, 2024, Chinese Patent Application No. 202411776190.6, filed on December 04, 2024, Chinese Patent Application No. 202411930105.7, filed on December 25, 2024, Chinese Patent Application No. 202411934179.8, filed on December 25, 2024, and Chinese Patent Application No. 202511157032.7, filed on August 18, 2025, the contents of all of the above-identified Chinese patent applications are hereby incorporated by reference in their entirety as part of the present application. TECHNICAL FIELD

[0002] Embodiments of the present disclosure relate to a clip applier. BACKGROUND

[0003] During a surgical procedure, when it is necessary to ligate a severed tissue or blood vessel to stop bleeding, a clip applier can be used to apply a clip to the tissue or blood vessel to achieve ligation. This ligation method is simple, efficient, and can be quickly performed, so the clip applier has gradually become a commonly used instrument in surgical procedures.

[0004] A clip applier includes a clip cartridge storing clips and a jaw assembly including two jaw arms. A complete clipping process of the clip applier generally includes a feeding action and a clipping action. When the feeding action is performed, the clip applier can feed a clip stored in the clip cartridge into the jaw assembly, and when the clipping action is performed, the clip applier can drive the two jaw arms of the jaw assembly to close so that the clip in the jaw assembly closes to clamp a tissue or blood vessel, thereby preventing the blood vessel or tissue from bleeding. SUMMARY

[0005] At least one embodiment of the present disclosure provides a clip applier, comprising: a jaw assembly comprising a first jaw arm and a second jaw arm; and a handle assembly configured to mount a clip cartridge, the clip cartridge configured to store a clip comprising a first clip arm and a second clip arm; the handle assembly comprising a clip ejection mechanism, the clip ejection mechanism located between the clip cartridge and the jaw assembly; the clip ejection mechanism comprising a first clip ejection plate and a second clip ejection plate spaced apart; at least one of the first clip ejection plate and the second clip ejection plate comprising a first guide slot, and at least one of the first clip ejection plate and the second clip ejection plate comprising a second guide slot, a first end of the first guide slot in communication with the clip cartridge, a second end of the first guide slot in communication with the first jaw arm, a first end of the second guide slot in communication with the clip cartridge, and a second end of the second guide slot in communication with the second jaw arm; the first guide slot configured to guide at least a portion of the first clip arm of the clip into the first jaw arm as the clip moves from the clip cartridge to the jaw assembly, and the second guide slot configured to guide at least a portion of the second clip arm of the clip into the second jaw arm as the clip moves from the clip cartridge to the jaw assembly.

[0006] For example, in the clip applier provided by an embodiment of the present disclosure, the first jaw arm comprises a first jaw slot, and the second jaw arm comprises a second jaw slot, the first jaw slot configured to receive the at least a portion of the first clip arm, and the second jaw slot configured to receive the at least a portion of the second clip arm; the second end of the first guide slot in communication with the first jaw slot of the first jaw arm, and the second end of the second guide slot in communication with the second jaw slot of the second jaw arm.

[0007] For example, in the clip applier provided by an embodiment of the present disclosure, the first jaw arm is connected with a first guide plate, the first guide plate configured to constrain and guide the at least a portion of the first clip arm together with the first jaw slot; and the second jaw arm is connected with a second guide plate, the second guide plate configured to constrain and guide the at least a portion of the second clip arm together with the second jaw slot.

[0008] For example, in the clip applier provided by an embodiment of the present disclosure, the first guide plate comprises a first sub-guide plate and a second sub-guide plate, the first sub-guide plate and the second sub-guide plate located on two slot walls of the first jaw slot respectively, and the first sub-guide plate and the second sub-guide plate spaced apart; and / or, the second guide plate comprises a third sub-guide plate and a fourth sub-guide plate, the third sub-guide plate and the fourth sub-guide plate located on two slot walls of the second jaw slot respectively, and the third sub-guide plate and the fourth sub-guide plate spaced apart.

[0009] For example, in the clip applier provided by an embodiment of the present disclosure, the first clip arm includes a first protrusion, and the second clip arm includes a second protrusion; the first guide slot is configured to guide the first protrusion to enter the first jaw arm when the clip moves from the clip cartridge to the jaw assembly; and the second guide slot is configured to guide the second protrusion to enter the second jaw arm when the clip moves from the clip cartridge to the jaw assembly.

[0010] For example, in the clip applier provided by an embodiment of the present disclosure, one end of the first clip arm is hinged to one end of the second clip arm to form a hinge portion, at least one of the first ejection plate and the second ejection plate includes a third guide slot, a first end of the third guide slot is in communication with the clip cartridge, and a second end of the third guide slot is located between the first jaw arm and the second jaw arm; the third guide slot is located between the first guide slot and the second guide slot and is configured to guide the hinge portion to enter between the first jaw arm and the second jaw arm when the clip moves from the clip cartridge to the jaw assembly.

[0011] For example, in the clip applier provided by an embodiment of the present disclosure, the hinge portion includes a third protrusion, and the third guide slot is configured to guide the third protrusion.

[0012] For example, in the clip applier provided by an embodiment of the present disclosure, the second end of the third guide slot extends beyond the second end of the first guide slot and the second end of the second guide slot.

[0013] For example, in the clip applier provided by an embodiment of the present disclosure, the jaw assembly is configured to be in a closed state when the clip moves from the clip cartridge to the ejection mechanism; in response to the clip entering the jaw assembly, the clip causes the jaw assembly to enter an open state from the closed state.

[0014] For example, in the clip applier provided by an embodiment of the present disclosure, the clip applier further comprises a main body and a pre-push assembly, the pre-push assembly comprises a pre-push piece, the pre-push piece is movably connected to the main body, the pre-push piece has a first position and a second position located distally to the first position; the jaw assembly comprises a clip feeding mechanism and a clip applying mechanism; the jaw assembly further comprises a closing elastic piece, the closing elastic piece is connected to the two jaw arms, the closing elastic piece is configured to provide a force for the two jaw arms to move towards each other; the clip applier has an initial state and a clip feeding state; in the initial state, the clip applying mechanism abuts against the first jaw arm and the second jaw arm so that the jaw assembly is in the open state, and the closing elastic piece stores energy; in the clip feeding state, in response to the pre-push piece being driven, the pre-push piece pushes the clip applying mechanism and the pre-push piece moves from the first position to the second position, so that the clip applying mechanism moves distally, thereby the clip applying mechanism is disengaged from the first jaw arm and the second jaw arm, and the closing elastic piece releases energy to move the first jaw arm and the second jaw arm towards each other, thereby the jaw assembly enters the closed state; in response to the clip feeding mechanism moving distally along the axis of the body assembly, the pre-push piece remains in the second position, the clip feeding mechanism drives the clip into the jaw assembly, and the clip makes the jaw assembly switch from the closed state to the open state.

[0015] For example, in the clip applier provided by an embodiment of the present disclosure, the clip applying mechanism has a first limiting part, the first jaw arm and the second jaw arm each have a second limiting part; in the initial state, the first limiting part is located on the rotation path of the second limiting part when the jaw assembly switches from the open state to the closed state, the first limiting part abuts against the second limiting part, so that the jaw assembly remains in the open state; in the clip feeding state, in response to the clip applying mechanism being pushed by the pre-push piece, the clip applying mechanism moves distally, so that the first limiting part moves out of the rotation path of the second limiting part when the jaw assembly switches from the open state to the closed state, thereby the closing elastic piece releases energy to move the first jaw arm and the second jaw arm towards each other until the jaw assembly switches to the closed state.

[0016] For example, in the clip applier provided by an embodiment of the present disclosure, the pre-push assembly further comprises a driving piece, the driving piece is movably connected to the main body; in the clip feeding state, in response to the driving piece being driven to move relative to the main body, the driving piece pushes the pre-push piece so that the pre-push piece moves from the first position to the second position, thereby the clip applying mechanism moves distally.

[0017] For example, in the clip applier provided by an embodiment of the present disclosure, the ejection mechanism further comprises a deceleration structure located at a contact area of the first ejection plate and / or the second ejection plate for contacting the clip, the deceleration structure being configured to contact the clip and apply resistance to the moving clip to reduce the speed of the clip.

[0018] For example, in the clip applier provided by an embodiment of the present disclosure, the deceleration structure is protruded or recessed relative to the contact area, the deceleration structure being configured to hinder the movement of the clip to apply resistance to the moving clip to reduce the speed of the clip; or, the deceleration structure has a larger friction coefficient than the rest of the contact area, the deceleration structure being configured to increase the friction force experienced by the clip to apply resistance to the moving clip to reduce the speed of the clip.

[0019] For example, in the clip applier provided by an embodiment of the present disclosure, the clip cartridge comprises a storage portion and an ejection portion, the storage portion being configured to store the clip, the ejection portion being connected to the ejection mechanism, the ejection portion comprising a first clip cartridge guide slot and a second clip cartridge guide slot, a first end of the first guide slot being in communication with the first clip cartridge guide slot, a first end of the second guide slot being in communication with the second clip cartridge guide slot, at least part of the first clip arm of the clip being configured to move from the first clip cartridge guide slot to the first jaw arm through the first guide slot, at least part of the second clip arm of the clip being configured to move from the second clip cartridge guide slot to the second jaw arm through the second guide slot.

[0020] For example, in the clip applier provided by an embodiment of the present disclosure, a first end of the first guide slot is provided with an inclined first guide surface configured to guide at least part of the first clip arm into the first guide slot, and / or a first end of the second guide slot is provided with an inclined second guide surface configured to guide at least part of the second clip arm into the second guide slot.

[0021] For example, in the clip applier provided by an embodiment of the present disclosure, the clip applier further comprises a main body, the jaw assembly being connected to the main body, the jaw assembly further comprising a clip feeding mechanism, the clip feeding mechanism being configured to move relative to the main body to push the clip, thereby driving the clip to move distally from the clip cartridge to the jaw assembly.

[0022] An embodiment of the present disclosure provides a clip applier, comprising: a jaw assembly comprising a first jaw arm and a second jaw arm; a handle assembly configured to mount a clip cartridge, the clip cartridge configured to store a clip, the clip comprising a first clip arm and a second clip arm, one end of the first clip arm hingedly connected to one end of the second clip arm and forming a hinge, the handle assembly comprising a clip ejection mechanism, the clip ejection mechanism located between the clip cartridge and the jaw assembly; the clip ejection mechanism comprising a first clip ejection plate and a second clip ejection plate spaced apart, a clip ejection channel defined between the first clip ejection plate and the second clip ejection plate, the clip ejection channel communicating with the clip cartridge and the jaw assembly, the clip configured to enter the jaw assembly from the clip cartridge through the clip ejection channel; the clip ejection channel comprising a first guide channel, a second guide channel and a third guide channel, the first guide channel configured to guide at least part of the first clip arm of the clip to enter the first jaw arm when the clip moves from the clip cartridge to the jaw assembly, the second guide channel configured to guide at least part of the second clip arm of the clip to enter the second jaw arm when the clip moves from the clip cartridge to the jaw assembly, the third guide channel located between the first guide channel and the second guide channel, the third guide channel configured to guide the hinge of the clip to enter between the first jaw arm and the second jaw arm when the clip moves from the clip cartridge to the jaw assembly.

[0023] For example, in the clip applier provided by an embodiment of the present disclosure, the first jaw arm comprises a first jaw slot, the second jaw arm comprises a second jaw slot, the first jaw slot is configured to accommodate at least part of the first clip arm, the second jaw slot is configured to accommodate at least part of the second clip arm, a first end of the first guide channel communicates with the clip cartridge, a second end of the first guide channel communicates with the first jaw slot of the first jaw arm, a first end of the second guide channel communicates with the clip cartridge, a second end of the second guide channel communicates with the second jaw slot of the second jaw arm.

[0024] For example, in the clip applier provided by an embodiment of the present disclosure, the first guide channel is defined by a first guide groove provided on at least one of the first clip ejection plate and the second clip ejection plate, the second guide channel is defined by a second guide groove provided on at least one of the first clip ejection plate and the second clip ejection plate, the third guide channel is defined by a third guide groove provided on at least one of the first clip ejection plate and the second clip ejection plate.

[0025] For example, in the clip applier provided by an embodiment of the present disclosure, the clip applier further comprises a main body and a pre-push assembly, the pre-push assembly comprises a pre-push piece, the pre-push piece is movably connected to the main body, the pre-push piece has a first position and a second position located distally to the first position; the jaw assembly comprises a clip feeding mechanism and a clip applying mechanism; the jaw assembly further comprises a closing elastic piece, the closing elastic piece is connected to the two jaw arms, the closing elastic piece is configured to provide a force for the two jaw arms to move towards each other; the clip applier has an initial state and a clip feeding state; in the initial state, the clip applying mechanism abuts against the first jaw arm and the second jaw arm so that the jaw assembly is in the open state, and the closing elastic piece stores energy; in the clip feeding state, in response to the pre-push piece being driven, the pre-push piece pushes the clip applying mechanism and the pre-push piece moves from the first position to the second position, so that the clip applying mechanism moves distally, thereby the clip applying mechanism is disengaged from the first jaw arm and the second jaw arm, and the closing elastic piece releases energy to move the first jaw arm and the second jaw arm towards each other, thereby the jaw assembly enters the closed state; in response to the clip feeding mechanism moving distally along the axis of the body assembly, the pre-push piece remains in the second position, the clip feeding mechanism drives the clip into the jaw assembly, and the clip makes the jaw assembly switch from the closed state to the open state.

[0026] For example, in the clip applier provided by an embodiment of the present disclosure, the clip applying mechanism has a first limiting part, the first jaw arm and the second jaw arm each have a second limiting part; in the initial state, the first limiting part is located on the rotation path of the second limiting part when the jaw assembly switches from the open state to the closed state, the first limiting part abuts against the second limiting part, so that the jaw assembly remains in the open state; in the clip feeding state, in response to the clip applying mechanism being pushed by the pre-push piece, the clip applying mechanism moves distally, so that the first limiting part moves out of the rotation path of the second limiting part when the jaw assembly switches from the open state to the closed state, thereby the closing elastic piece releases energy to move the first jaw arm and the second jaw arm towards each other until the jaw assembly switches to the closed state.

[0027] For example, in the clip applier provided by an embodiment of the present disclosure, the pre-push assembly further comprises a driving piece, the driving piece is movably connected to the main body; in the clip feeding state, in response to the driving piece being driven to move relative to the main body, the driving piece pushes the pre-push piece so that the pre-push piece moves from the first position to the second position, thereby the clip applying mechanism moves distally.

[0028] For example, in the clip applier provided by an embodiment of the present disclosure, the clip applier further comprises a main body, the jaw assembly is connected to the main body, and the jaw assembly further comprises a clip feeding mechanism configured to move relative to the main body to push the clip, thereby driving the clip to move distally from the clip cartridge to the jaw assembly. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some of the embodiments of the present disclosure, but not limit the present disclosure.

[0030] FIG. 1 is a structural schematic diagram of a clip applier according to an embodiment of the present disclosure;

[0031] FIG. 2 is a partial structural schematic diagram of a jaw assembly according to an embodiment of the present disclosure;

[0032] FIG. 3 is a partial cross-sectional view of the clip applier shown in FIG. 1;

[0033] FIG. 4 is another layout cross-sectional view of the clip applier shown in FIG. 1;

[0034] FIG. 5 is another partial cross-sectional view of the clip applier shown in FIG. 1;

[0035] FIG. 6 is a structural schematic diagram of a clip cartridge in a first state according to an embodiment of the present disclosure;

[0036] FIG. 7 is a structural schematic diagram of a clip cartridge in a second state according to an embodiment of the present disclosure;

[0037] FIG. 8 is a partial cross-sectional view of a clip applier according to an embodiment of the present disclosure;

[0038] FIG. 9 is a layout cross-sectional view of the clip applier shown in FIG. 8;

[0039] FIG. 10 is a structural schematic diagram of another jaw assembly according to an embodiment of the present disclosure;

[0040] FIG. 11 is a cross-sectional schematic diagram of another jaw assembly according to an embodiment of the present disclosure;

[0041] FIG. 12 is a perspective schematic diagram of a clip applier according to some embodiments of the present disclosure;

[0042] FIG. 13 is a cross-sectional view of a partial area of a jaw assembly and a jaw assembly of the clip applier shown in FIG. 12, wherein the clip applier is in an initial state;

[0043] Figure 14 is a cross-sectional view of a portion of the handle assembly and jaw assembly of the clip applier of Figure 12, wherein the clip applier is in a loading state, the loading mechanism has disengaged the drive member, and the clip has not yet reached the jaw assembly;

[0044] Figure 15 is a cross-sectional view of a portion of the handle assembly and jaw assembly of the clip applier of Figure 12, wherein the clip applier is in a loading state, the clip has reached the jaw assembly;

[0045] Figure 16 is a cross-sectional view of a portion of the handle assembly and jaw assembly of the clip applier of Figure 12, wherein the clip applier is in a clipping state, the jaw assembly has fully closed;

[0046] Figure 17 is a cross-sectional view of the handle assembly and jaw assembly of the clip applier of Figure 12, wherein the clip applier is in an initial state;

[0047] Figure 18 is a cross-sectional view of a portion of the handle assembly and jaw assembly of the clip applier of Figure 12, wherein the clip applier is in a loading state, the loading mechanism has disengaged the drive member, and the clip has not yet reached the jaw assembly;

[0048] Figure 19 is a cross-sectional view of a portion of the handle assembly and jaw assembly of the clip applier of Figure 12, wherein the clip applier is in a loading state, the clip has reached the jaw assembly;

[0049] Figure 20 is a cross-sectional view of a portion of the handle assembly and jaw assembly of the clip applier of Figure 12, wherein the clip applier is in a clipping state, the jaw assembly has fully closed;

[0050] Figure 21 is a perspective view of a first sleeve of the clip applier of Figure 12;

[0051] Figure 22 is a perspective view of a jaw arm of the jaw assembly of the clip applier of Figure 12;

[0052] Figure 23 is a perspective view of a closure spring of the jaw assembly of the clip applier of Figure 12;

[0053] Figure 24-A is a cross-sectional view of a portion of the handle assembly and jaw assembly of the clip applier, wherein the clip applier is in an initial state, according to further embodiments of the present disclosure;

[0054] Figure 24-B is a cross-sectional view of a portion of the handle assembly and jaw assembly of Figure 24-A, wherein the clip applier is in a loading state, and the clip has not yet reached the jaw assembly;

[0055] Figure 25-A is a perspective view of the jaw assembly of the clip applier, wherein the clip applier is in an initial state, according to further embodiments of the present disclosure;

[0056] FIG. 25-B is a schematic view of the jaw assembly shown in FIG. 25-A, wherein the clip applier is in a feeding state and the clip has not yet reached the jaw assembly;

[0057] FIG. 26-A is a schematic view of a jaw assembly of a clip applier according to further embodiments of the present disclosure, wherein the clip applier is in an initial state;

[0058] FIG. 26-B is a schematic view of the jaw assembly shown in FIG. 26-A, wherein the clip applier is in a feeding state and the clip has not yet reached the jaw assembly;

[0059] FIG. 27-A is a schematic view of a jaw assembly of a clip applier according to further embodiments of the present disclosure, wherein the clip applier is in an initial state;

[0060] FIG. 27-B is a schematic view of the jaw assembly shown in FIG. 27-A, wherein the clip applier is in a feeding state and the clip has not yet reached the jaw assembly;

[0061] FIG. 28 is a partial area view of the clip applier shown in FIG. 12, wherein the clip applier is in an initial state;

[0062] FIG. 29 is a partial area view of the clip applier shown in FIG. 12, wherein the clip applier is in a feeding state, the feeding mechanism has disengaged the drive member, and the clip has not yet reached the jaw assembly;

[0063] FIG. 30 is a partial area view of the clip applier shown in FIG. 12, wherein the clip applier is in a feeding state and the clip has reached the jaw assembly;

[0064] FIG. 31 is a partial area view of the clip applier shown in FIG. 12, wherein the clip applier is in a clipping state and the jaw assembly has not yet fully closed;

[0065] FIG. 32 is a partial area view of the clip applier shown in FIG. 12, wherein the clip applier is in a clipping state and the jaw assembly has fully closed;

[0066] FIG. 33 is a partial area view of the clip applier shown in FIG. 12, wherein the clip applier is in a resetting state;

[0067] FIG. 34 is a perspective view of a partial area of the clip applier shown in FIG. 12, wherein the clip applier is in an initial state;

[0068] FIG. 35 is a perspective view of a partial area of the clip applier shown in FIG. 12, wherein the clip applier is in a feeding state, the feeding mechanism has disengaged the drive member, and the clip has not yet reached the jaw assembly;

[0069] FIG. 36 is a cross-sectional view of a partial area of the clip applier shown in FIG. 12, wherein the clip applier is in a feeding state, the feeding mechanism has disengaged the drive member, and the clip has not yet reached the jaw assembly;

[0070] FIG. 37 is a perspective view of a drive member of the pusher assembly of the clip applier of FIG. 12;

[0071] FIG. 38 is a perspective view of a clip magazine of the clip applier of FIG. 12;

[0072] FIG. 39 is another perspective view of the clip magazine of FIG. 38;

[0073] FIG. 40 is a view of a stack of clips in the clip magazine of FIG. 38;

[0074] FIG. 41 is a top view of the clip magazine and clips of FIG. 40;

[0075] FIG. 42 is a partial cross-sectional view of the handle assembly and jaw assembly of the clip applier of FIG. 12 in another orientation, with the clip applier in an initial state;

[0076] FIG. 43 is a partial cross-sectional view of the handle assembly and jaw assembly of the clip applier of FIG. 12 in another orientation, with the clip applier in a clip feeding state, with the clip feeding mechanism beginning to move distally;

[0077] FIG. 44 is a partial cross-sectional view of the handle assembly and jaw assembly of the clip applier of FIG. 12 in another orientation, with the clip applier in a clip feeding state, with the clip feeding mechanism moved distally to a limit position;

[0078] FIG. 45 is a partial cross-sectional view of the handle assembly and jaw assembly of the clip applier of FIG. 12 in another orientation, with the clip applier in a reset state;

[0079] FIG. 46 is a perspective view of the clip applier of FIG. 12 with the clip applier hidden;

[0080] FIG. 47 is a front view of the clip applier of FIG. 12 with the clip applier hidden;

[0081] FIG. 48 is a partial view of the clip applier of FIG. 12 with the clip applier hidden. DETAILED DESCRIPTION

[0082] In order to make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some but not all of the embodiments of the present disclosure. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of the present disclosure.

[0083] Unless otherwise defined, technical terms or scientific terms used in the present disclosure shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first", "second", and similar terms used in the present disclosure do not necessarily mean any order, number, or importance, but are only used to distinguish different components. The terms "comprise", "include" or "contain" and similar terms mean that the elements or objects before the term encompass the elements or objects listed after the term and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships can also be changed accordingly.

[0084] It should be understood that the terms "proximal" and "distal" and "front" and "rear" used in the present disclosure are relative to the clinician who manipulates the handle assembly of the clip applier. The terms "proximal" and "rear" refer to the part close to the clinician, and the terms "distal" and "front" refer to the part away from the clinician. That is, the operating assembly is the proximal end, and the end effector is the distal end, and the proximal end of a certain component means that the component is close to one end of the operating assembly, and the distal end means that the component is close to one end of the end effector.

[0085] In the process of the clip applier performing the clip feeding action, the clip moves from the clip cartridge to the jaw assembly, and no guide structure is provided on the clip applier, and the clip is only limited at the tail, and the clip arms are not limited, so that the clip has a risk of twisting.

[0086] To this end, the disclosure provides a clip applier, which includes a jaw assembly and a handle assembly; the jaw assembly includes a first jaw arm and a second jaw arm; the handle assembly is configured to mount a clip cartridge, the clip cartridge is configured to store a clip, the clip includes a first clip arm and a second clip arm; the handle assembly includes a clip ejection mechanism, the clip ejection mechanism is located between the clip cartridge and the jaw assembly; the clip ejection mechanism includes a first clip ejection plate and a second clip ejection plate which are spaced apart; at least one of the first clip ejection plate and the second clip ejection plate includes a first guide slot, and at least one of the first clip ejection plate and the second clip ejection plate includes a second guide slot, a first end of the first guide slot is in communication with the clip cartridge, a second end of the first guide slot is in communication with the first jaw arm, a first end of the second guide slot is in communication with the clip cartridge, and a second end of the second guide slot is in communication with the second jaw arm; the first guide slot is configured to guide at least part of the first clip arm of the clip into the first jaw arm when the clip moves from the clip cartridge to the jaw assembly, and the second guide slot is configured to guide at least part of the second clip arm of the clip into the second jaw arm when the clip moves from the clip cartridge to the jaw assembly. Thus, by providing the clip ejection mechanism including the first guide slot and the second guide slot, the clip applier can stably guide the first clip arm and the second clip arm to the first jaw arm and the second jaw arm, respectively, during the movement of the clip from the clip cartridge to the jaw assembly, so that the movement posture of the clip as a whole is more stable, and twisting is avoided.

[0087] In the following, the clip applier provided by the embodiments of the disclosure will be described in detail in combination with the drawings.

[0088] FIG. 1 is a structural schematic diagram of a clip applier provided by an embodiment of the disclosure; FIG. 2 is a partial structural schematic diagram of a handle assembly provided by an embodiment of the disclosure; FIG. 3 is a partial sectional view of the clip applier shown in FIG. 1; FIG. 4 is another layout sectional view of the clip applier shown in FIG. 1; and FIG. 5 is another partial sectional view of the clip applier shown in FIG. 1.

[0089] As shown in FIGS. 1, 2 and 3, the clip applier 500 includes a jaw assembly 100 and a handle assembly 200; the jaw assembly 100 includes a first jaw arm 110 and a second jaw arm 120; the handle assembly 200 is configured to mount a clip cartridge 300, the clip cartridge 300 is configured to store a clip 400, the clip 400 includes a first clip arm 410 and a second clip arm 420; the handle assembly 200 includes a clip ejection mechanism 210, the clip ejection mechanism 210 is located between the clip cartridge 300 and the jaw assembly 100; the clip ejection mechanism 210 includes a first clip ejection plate 210A and a second clip ejection plate 210B which are spaced apart.

[0090] As shown in FIG. 2, FIG. 3 and FIG. 4, at least one of the first ejection clamp plate 210A and the second ejection clamp plate 210B comprises a first guide slot 231, and at least one of the first ejection clamp plate 210A and the second ejection clamp plate 210B comprises a second guide slot 232, a first end of the first guide slot 231 is in communication with the clamp chamber 300, a second end of the first guide slot 231 is in communication with the first jaw arm 110, a first end of the second guide slot 232 is in communication with the clamp chamber 300, and a second end of the second guide slot 232 is in communication with the second jaw arm 120; the first guide slot 231 is configured to guide at least part of the first clamp arm 410 of the clip 400 to enter the first jaw arm 110 when the clip 400 moves from the clamp chamber 300 to the jaw assembly 100, and the second guide slot 232 is configured to guide at least part of the second clamp arm 420 of the clip 400 to enter the second jaw arm 120 when the clip 400 moves from the clamp chamber 300 to the jaw assembly 100. It should be noted that the first end mentioned above can be a proximal end, and the second end can be a distal end.

[0091] In the clip applier provided in the embodiments of the present disclosure, as shown in FIG. 3, FIG. 4 and FIG. 5, during the movement of the clip 400 from the clamp chamber 300 to the jaw assembly 100, the distal end of the clip 400 first moves from the clamp chamber 300 to the ejection mechanism 210, at this time, at least part of the first clamp arm 410 of the clip 400 can be guided by the first guide slot 231 to stably move in the first guide slot 231, and at least part of the second clamp arm 420 of the clip 400 can be guided by the second guide slot 232 to stably move in the second guide slot 232; then, at least part of the first clamp arm 410 of the clip 400 enters the first jaw arm 110 after passing through the first guide slot 231, and at least part of the second clamp arm 420 of the clip 400 enters the second jaw arm 120 after passing through the second guide slot 232. Thus, by providing the ejection mechanism 210 comprising the first guide slot 231 and the second guide slot 232 mentioned above, the clip applier 500 can stably guide the first clamp arm 410 and the second clamp arm 420 to the first jaw arm 110 and the second jaw arm 120 respectively during the movement of the clip 400 from the clamp chamber 300 to the jaw assembly 100, so that the movement posture of the clip 400 as a whole is more stable, and twisting is avoided.

[0092] It should be noted that the case where at least one of the first ejection clamp plate and the second ejection clamp plate includes the first guide slot and at least one of the first ejection clamp plate and the second ejection clamp plate includes the second guide slot includes the following cases: (1) both the first ejection clamp plate and the second ejection clamp plate are provided with the first guide slot and the second guide slot, that is, two first guide slots are respectively located on the first ejection clamp plate and the second ejection clamp plate and oppositely arranged, and two second guide slots are respectively located on the first ejection clamp plate and the second ejection clamp plate and oppositely arranged; (2) the first ejection clamp plate is provided with the first guide slot and the second guide slot, and the second ejection clamp plate is not provided with a guide slot; (3) the first ejection clamp plate is not provided with a guide slot, and the second ejection clamp plate is provided with the first guide slot and the second guide slot; (4) the first ejection clamp plate is provided with the first guide slot, and the second ejection clamp plate is provided with the second guide slot; and (5) the first ejection clamp plate is provided with the second guide slot, and the second ejection clamp plate is provided with the first guide slot.

[0093] In some examples, as shown in FIGS. 2 and 3, an ejection channel 220 is defined between the first ejection clamp plate 210A and the second ejection clamp plate 210B, the ejection channel 220 is communicated with the clamp storage 300 and the jaw assembly 100, and the clip 400 is configured to enter the jaw assembly 100 from the clamp storage 300 through the ejection channel 220. That is, the proximal end of the ejection channel 200 is communicated with the clamp storage 300, and the distal end of the ejection channel 200 is communicated with the jaw assembly 100, so that the clip 400 can enter the jaw assembly 100 from the clamp storage 300 through the ejection channel 220.

[0094] In some examples, as shown in FIGS. 2 and 3, the first ejection clamp plate 210A and the second ejection clamp plate 210B both include the first guide slot 231 and the second guide slot 232. Thus, the thickness of the first ejection clamp plate and the second ejection clamp plate can be set to be thinner, and the constraint received by the clip is more balanced, and the first ejection clamp plate and the second ejection clamp plate can provide a more balanced guide effect for the clip. Of course, the embodiments of the present disclosure include but are not limited to this, and the specific arrangement of the first guide slot and the second guide slot can also adopt the other cases described above.

[0095] In some examples, as shown in FIGS. 2 and 3, the upper and lower sides of the first ejection clamp plate 210A and the second ejection clamp plate 210B are connected by a connecting plate 210C, thereby surrounding the ejection channel 200 described above. At this time, the cross section of the ejection mechanism 210 forms a substantially rectangular ring. Of course, the embodiments of the present disclosure include but are not limited to this, and the first ejection clamp plate and the second ejection clamp plate can also not be connected, or only one side is connected by a connecting plate.

[0096] In some examples, as shown in FIGS. 2 and 3, the first outboard clamp plate 210A, the second outboard clamp plate 210B, and the two connecting plates 210C are integrally formed. At this time, the first outboard clamp plate 210A and the second outboard clamp plate 210B can be two opposite plate-shaped portions of the integral structure. Of course, the embodiments of the present disclosure include but are not limited to this, and the first outboard clamp plate, the second outboard clamp plate, and the connecting plate can also not be integrated.

[0097] In some examples, as shown in FIG. 1, the clip applier 500 described above can further include an operation assembly 400, a clip feeding mechanism 520, and a clip applying mechanism 530; the operation assembly 400 includes a clip feeding handle 410 and a clip applying handle 420, the clip feeding handle 410 is drivingly connected with the clip feeding mechanism 520, and the clip applying handle 420 is drivingly connected with the clip applying mechanism 530. In the process of using the clip applier, the clip feeding handle 410 can be pulled first to make the clip feeding mechanism 520 push the clip into the jaw assembly; and then the clip applying handle 530 can be pulled to make the clip applying mechanism 530 drive the jaw assembly to close.

[0098] In some examples, as shown in FIGS. 1 and 3, the clip applier 500 described above further includes a main body 510, and the jaw assembly 200 is connected to the main body 510, the jaw assembly 200 includes the clip feeding mechanism 520 described above, and the clip feeding mechanism 520 is configured to move relative to the main body 510 to push the clip 400, thereby driving the clip 400 to move distally from the clip cartridge 300 to the jaw assembly 110.

[0099] In some examples, as shown in FIG. 2, the jaw assembly 200 includes a clip cartridge mounting groove 250 located on one side of the outboard clip feeding mechanism 210 close to the proximal end of the jaw assembly 200, which is configured to mount the clip cartridge 300.

[0100] In some examples, as shown in FIGS. 4 and 5, the clip feeding mechanism 520 includes a clip feeding portion 525 configured to push the clip 400 into the jaw assembly 100, and after the clip 400 is in place, at least part of the first clip arm 410 of the clip 400 is located at the distal end of the first jaw arm 110 of the jaw assembly 100, and at least part of the second clip arm 420 of the clip 400 is located at the distal end of the second jaw arm 120 of the jaw assembly 100; the clip applying mechanism 530 includes a sleeve 535 configured to accommodate part of the jaw assembly 100 inside so that the jaw assembly 100 is closed.

[0101] In some examples, as shown in FIGS. 3-5, the first jaw arm 110 includes a first jaw slot 112 configured to receive at least a portion of the first clip arm 410, and the second jaw arm 120 includes a second jaw slot 122 configured to receive at least a portion of the second clip arm 420; the second end of the first guide slot 231 is in communication with the first jaw slot 112 of the first jaw arm 110, and the second end of the second guide slot 232 is in communication with the second jaw slot 122 of the second jaw arm 120. Thus, the first guide slot 231 can guide at least a portion of the first clip arm 410 of the clip 400 to enter the first jaw slot 112 when the clip 400 moves from the clip cartridge 300 to the jaw assembly 100, and the second guide slot 232 can guide at least a portion of the second clip arm 420 of the clip 400 to enter the second jaw slot 112 when the clip 400 moves from the clip cartridge 300 to the jaw assembly 100.

[0102] In some examples, as shown in FIGS. 3-4, the first clip arm 410 includes a first protrusion 412, and the second clip arm 420 includes a second protrusion 422; the first guide slot 231 is configured to guide the first protrusion 412 to enter the first jaw arm 110, e.g., the first jaw slot 112 of the first jaw arm 110, when the clip 400 moves from the clip cartridge 300 to the jaw assembly 100, and the second guide slot 232 is configured to guide the second protrusion 422 to enter the second jaw arm 120, e.g., the second jaw slot 122 of the second jaw arm 120, when the clip 400 moves from the clip cartridge 300 to the jaw assembly 100. Thus, by providing the first protrusion and the second protrusion on the first clip arm and the second clip arm, respectively, the first guide slot and the second guide slot can guide the first clip arm and the second clip arm without affecting the movement of the clip from the proximal end to the distal end.

[0103] In some examples, as shown in FIGS. 3 and 4, one end of the first clip arm 410 is hinged to one end of the second clip arm 420 and forms a hinge portion 430, at least one of the first clip-out plate 210A and the second clip-out plate 210B includes a third guide slot 233, a first end of the third guide slot 233 is in communication with the clip chamber 300, and a second end of the third guide slot 233 is located between the first jaw arm 110 and the second jaw arm 120; the third guide slot 233 is located between the first guide slot 231 and the second guide slot 232 and is configured to guide the hinge portion 430 to enter between the first jaw arm 110 and the second jaw arm 120 when the clip 400 moves from the clip chamber 300 to the jaw assembly 100. Thus, by providing the above-mentioned third guide slot 233, the clip applier 500 can stably guide the hinge portion 430 to between the first jaw arm 110 and the second jaw arm 120 during the movement of the clip 400 from the clip chamber 300 to the jaw assembly 100, further stabilizing the overall movement posture of the clip 400 and avoiding twisting.

[0104] It should be noted that the case where at least one of the first clip-out plate and the second clip-out plate includes the third guide slot includes the following cases: (1) both the first clip-out plate and the second clip-out plate include the third guide slot; (2) the first clip-out plate includes the third guide slot, and the second clip-out plate does not include the third guide slot; (3) the first clip-out plate does not include the third guide slot, and the second clip-out plate includes the third guide slot.

[0105] In some examples, as shown in FIGS. 3 and 4, the hinge portion 430 includes a third protruding portion 432, and the third guide slot 233 is configured to guide the third protruding portion 432. Similarly, by providing the above-mentioned third protruding portion, the third guide slot can guide the hinge portion without affecting the movement of the clip from the proximal end to the distal end.

[0106] In some examples, as shown in FIGS. 3 and 4, the second end of the third guide slot 233 extends beyond the second end of the first guide slot 231 and the second end of the second guide slot 232. That is, the distal end of the third guide slot 233 extends beyond the distal end of the first guide slot 231 and the distal end of the second guide slot 232, i.e., the distance between the distal end of the third guide slot 233 and the clip chamber 300 is greater than the distance between the distal end of the first guide slot 231 and the distal end of the second guide slot 232 and the clip chamber 300. Thus, during the movement of the clip 400 from the clip chamber 300 to the jaw assembly 100, the third guide slot 233 can provide guidance and support for the hinge portion (i.e., the tail portion) of the clip over a longer stroke, thereby further increasing the stability of the clip.

[0107] In some examples, the length of the third guide slot can be greater than the length of the first guide slot and the length of the second guide slot, such that the second end of the third guide slot extends beyond the second end of the first guide slot and the second end of the second guide slot. However, embodiments of the present disclosure include but are not limited to this.

[0108] In some examples, as shown in FIGS. 3 and 4, the first end of the first guide slot 231 is provided with a first inclined guide surface 2310 configured to guide at least a portion of the first clamping arm 410 into the first guide slot 231. For example, the first inclined guide surface 2310 can be used to guide the first protruding portion 412 on the first clamping arm 410 into the first guide slot 231.

[0109] In some examples, as shown in FIGS. 3 and 4, the first end of the second guide slot 232 is provided with a second inclined guide surface 2320 configured to guide at least a portion of the second clamping arm 420 into the second guide slot 232. For example, the second inclined guide surface 2320 can be used to guide the second protruding portion 422 on the second clamping arm 420 into the second guide slot 231.

[0110] In some examples, as shown in FIGS. 3 and 4, the first end of the third guide slot 233 is provided with a third inclined guide surface 2330 configured to guide at least a portion of the hinge portion 430 into the third guide slot 233. For example, the third inclined guide surface 2330 can be used to guide the third protruding portion 432 on the hinge portion 430 into the third guide slot 233.

[0111] In some examples, as shown in FIGS. 3 and 4, when the clip 400 is located in the clip compartment 300, the highest point of the first clamping arm 410 is the first protruding portion 412, the lowest point of the second clamping arm 420 is the most protruding part of the second clamping arm 420, and the second protruding portion 422 is located above the lowest point. Therefore, the first inclined guide surface 2310 can be provided on the upper edge of the first guide slot 232, and the second inclined guide surface 2320 can also be provided on the upper edge of the second guide slot 232.

[0112] In some examples, as shown in FIGS. 3 and 4, the plier body assembly 200 further includes a steering module 290 configured to rotate the clip compartment by turning. Of course, embodiments of the present disclosure include but are not limited to this, and the plier body assembly can also not be provided with a steering module.

[0113] FIG. 6 is a structural schematic diagram of a clip compartment in a first state according to an embodiment of the present disclosure, and FIG. 7 is a structural schematic diagram of a clip compartment in a second state according to an embodiment of the present disclosure. As shown in FIGS. 6 and 7, the clip compartment 300 includes a storage portion 310 and a clip outlet portion 320; the storage portion 310 is configured to store the clip 400, and the clip outlet portion 320 is connected to the clip outlet mechanism 210 (see FIGS. 3-5).

[0114] In some examples, the storage portion 310 can store a plurality of clips 400, for example, the plurality of clips 400 are stacked in the storage portion 310 in a transverse direction; the transverse direction can be perpendicular to the direction from the proximal end to the distal end.

[0115] In some examples, as shown in FIGS. 6 and 7, the clip ejection portion 320 includes a first clip storage guide slot 331 and a second clip storage guide slot 332, a first end of the first guide slot 231 is in communication with the first clip storage guide slot 331, and a first end of the second guide slot 232 is in communication with the second clip storage guide slot 332; at least a portion of the first clip arm 410 of the clip 400 is configured to move from the first clip storage guide slot 331 through the first guide slot 231 to the first jaw arm 110, for example, into the first jaw slot 112 of the first jaw arm 110, and at least a portion of the second clip arm 420 of the clip 400 is configured to move from the second clip storage guide slot 332 through the second guide slot 232 to the second jaw arm 120, for example, into the second jaw slot 122 of the second jaw arm 120. In this way, the clip 400 is guided during movement from the storage portion 310 to the clip ejection portion 320 and then from the clip ejection portion 320 to the clip ejection mechanism 210, so that the movement posture of the clip is more stable, and twisting is avoided.

[0116] In some examples, as shown in FIGS. 6 and 7, the clip storage 300 includes a storage body 340, which can include the storage portion 310 and the clip ejection portion 320 described above. The storage portion 310 of the clip storage 300 further includes a support member 315 configured to accommodate a plurality of clips 400 and movably disposed on the storage body 340. When the first clip 400 is completely moved from the storage portion 310 to the clip ejection portion 320, the support member 315 can push the second clip 400 out, so that the second clip 400 can also enter the clip ejection portion 320, thereby achieving continuous clip application.

[0117] In some examples, as shown in FIGS. 6 and 7, the support member 315 is provided with a support member groove 3150 for accommodating the hinge portion 430 of the clip 400 or the third protruding portion 432 on the hinge portion 430, thereby improving the stability of the clip 400 in the clip storage.

[0118] FIG. 8 is a partial cross-sectional view of a clip applier according to an embodiment of the present disclosure; and FIG. 9 is a layout cross-sectional view of the clip applier shown in FIG. 8.

[0119] As shown in FIGS. 8 and 9, the clip applier 500 includes a jaw assembly 100 and a handle assembly 200; the jaw assembly 100 includes a first jaw arm 110 and a second jaw arm 120; the handle assembly 200 is configured to mount a clip cartridge 300, the clip cartridge 300 is configured to store a clip 400, the clip 400 includes a first clip arm 410 and a second clip arm 420; the handle assembly 200 includes a clip ejection mechanism 210, the clip ejection mechanism 210 is located between the clip cartridge 300 and the jaw assembly 100; the clip ejection mechanism 210 includes a first clip ejection plate 210A and a second clip ejection plate 210B which are spaced apart, a clip ejection channel 220 is defined between the first clip ejection plate 210A and the second clip ejection plate 210B, the clip ejection channel 220 is in communication with the clip cartridge 300 and the jaw assembly 100, the clip 400 is configured to enter the jaw assembly 100 from the clip cartridge 300 through the clip ejection channel 220. That is, the proximal end of the clip ejection channel 200 is in communication with the clip cartridge 300, and the distal end of the clip ejection channel 200 is in communication with the jaw assembly 100, thereby the clip 400 can enter the jaw assembly 100 from the clip cartridge 300 through the clip ejection channel 220.

[0120] As shown in FIGS. 8 and 9, the above-mentioned clip ejection channel 220 includes a first guide channel 221 and a second guide channel 222; the first guide channel 221 is configured to guide at least part of the first clip arm 410 of the clip 400 to enter the first jaw arm 110 when the clip 400 moves from the clip cartridge 300 to the jaw assembly 100, the second guide channel 222 is configured to guide at least part of the second clip arm 420 of the clip 400 to enter the second jaw arm 120 when the clip 400 moves from the clip cartridge 300 to the jaw assembly 100.

[0121] In the clip applier provided in the embodiments of the present disclosure, during the movement of the clip 400 from the clip cartridge 300 to the jaw assembly 100, the distal end of the clip 400 first moves from the clip cartridge 300 into the clip ejection mechanism 210, at this time, at least part of the first clip arm 410 of the clip 400 can be guided by the first guide channel 221 to stably move in the first guide channel 221, and at least part of the second clip arm 420 of the clip 400 can be guided by the second guide channel 222 to stably move in the second guide channel 222; then, at least part of the first clip arm 410 of the clip 400 enters the first jaw arm 110 after passing through the first guide channel 221, and at least part of the second clip arm 420 of the clip 400 enters the second jaw arm 120 after passing through the second guide channel 222. Thus, by providing the clip ejection mechanism 210 including the above-mentioned first guide channel 221 and the second guide channel 222, the clip applier 500 can stably guide the first clip arm 410 and the second clip arm 420 to the first jaw arm 110 and the second jaw arm 120, respectively, during the movement of the clip 400 from the clip cartridge 300 to the jaw assembly 100, so that the movement posture of the clip 400 as a whole is more stable, and twisting is avoided.

[0122] In some examples, as shown in FIGS. 8 and 9, the first guide channel 221 is defined by a first guide groove 231 provided on at least one of the first and second out-clamps 210A and 210B, and the second guide channel 222 is defined by a second guide groove 232 provided on at least one of the first and second out-clamps 210A and 210B. That is, at least one of the first and second out-clamps 210A and 210B includes the first guide groove 231, so as to form the first guide channel 221 between the first and second out-clamps 210A and 210B; and at least one of the first and second out-clamps 210A and 210B includes the second guide groove 232, so as to form the second guide channel 222 between the first and second out-clamps 210A and 210B.

[0123] It should be noted that the case where at least one of the first and second out-clamps includes the first guide groove and at least one of the first and second out-clamps includes the second guide groove includes the following cases: (1) both the first and second out-clamps are provided with the first and second guide grooves, that is, two first guide grooves are respectively provided on the first and second out-clamps and oppositely arranged, and two second guide grooves are respectively provided on the first and second out-clamps and oppositely arranged; (2) the first out-clamp is provided with the first and second guide grooves, and the second out-clamp is not provided with the guide grooves; (3) the first out-clamp is not provided with the guide grooves, and the second out-clamp is provided with the first and second guide grooves; (4) the first out-clamp is provided with the first guide groove, and the second out-clamp is provided with the second guide groove; and (5) the first out-clamp is provided with the second guide groove, and the second out-clamp is provided with the first guide groove.

[0124] In some examples, as shown in FIGS. 8 and 9, both the first and second out-clamps 210A and 210B include the first guide groove 231, and both the first and second out-clamps 210A and 210B include the second guide groove 232. In this way, the thickness of the first and second out-clamps can be set to be thinner, and the guide force received by the clip is more balanced. Of course, the embodiments of the present disclosure include but are not limited to this, and the specific arrangement of the first and second guide grooves can also adopt the other cases described above.

[0125] In some examples, as shown in FIGS. 8 and 9, one end of the first clip arm 410 is hingedly connected to one end of the second clip arm 420 to form a hinge portion 430, and the ejection channel 220 further comprises a third guide channel 223; the third guide channel 223 is configured to guide at least part of the hinge portion 430 of the clip 400 to enter between the first jaw arm 110 and the second jaw arm 120 when the clip 400 moves from the clip storage 300 to the jaw assembly 100. Thus, by providing the third guide channel 223, the clip applier 500 can stably guide the hinge portion 430 to enter between the first jaw arm 110 and the second jaw arm 120 when the clip 400 moves from the clip storage 300 to the jaw assembly 100, further stabilizing the movement posture of the clip 400 as a whole and avoiding twisting.

[0126] In some examples, as shown in FIGS. 8 and 9, the third guide channel 233 is defined by a third guide groove 233 provided in at least one of the first ejection plate 210A and the second ejection plate 210B. That is, at least one of the first ejection plate 210A and the second ejection plate 210B comprises the third guide groove 233 to form the third guide channel 233 between the first ejection plate 210A and the second ejection plate 210B.

[0127] It should be noted that the case where at least one of the first ejection plate and the second ejection plate comprises the third guide groove includes the following cases: (1) both the first ejection plate and the second ejection plate comprise the third guide groove; (2) the first ejection plate comprises the third guide groove, and the second ejection plate does not comprise the third guide groove; (3) the first ejection plate does not comprise the third guide groove, and the second ejection plate comprises the third guide groove.

[0128] In some examples, as shown in FIGS. 8 and 9, the first jaw arm 110 comprises a first jaw slot 112, and the second jaw arm 120 comprises a second jaw slot 122; the first jaw slot 112 is configured to accommodate at least part of the first clip arm 410, and the second jaw slot 122 is configured to accommodate at least part of the second clip arm 420; the second end of the first guide channel 221 is in communication with the first jaw slot 112 of the first jaw arm 110, and the second end of the second guide channel 222 is in communication with the second jaw slot 122 of the second jaw arm 120. Thus, the first guide channel 221 can guide at least part of the first clip arm 410 of the clip 400 to enter the first jaw slot 112 when the clip 400 moves from the clip storage 300 to the jaw assembly 100, and the second guide channel 222 can guide at least part of the second clip arm 420 of the clip 400 to enter the second jaw slot 112 when the clip 400 moves from the clip storage 300 to the jaw assembly 100.

[0129] In some examples, the first clamping arm 410 of the clip 400 described above can be provided with a first protrusion 412, the second clamping arm 420 can be provided with a second protrusion 422, and the hinge portion 430 can be provided with a third protrusion 432. The positions of the first protrusion 412, the second protrusion 422, and the third protrusion 423 and the cooperation relationship with other components can refer to the relevant description of the embodiments shown in FIGS. 1-5, which will not be repeated here.

[0130] In some examples, as shown in FIGS. 8 and 9, the first clamping arm 110 is connected with a first guide plate 151 configured to cooperatively constrain and guide at least part of the first clamping arm 410 with the first jaw slot 112; the first guide plate 151 can play a guiding role at the junction of the ejection channel 220 and the first clamping arm 110, and when the extension direction of the first clamping arm 110 is different from the extension direction of the ejection channel 220, the reliability of the clip feeding can be improved. In addition, the first guide plate 151 can also limit at least part of the first clamping arm 410 from disengaging from the first jaw slot 112, but at the same time allow the first clamping arm 410 to move from the proximal end to the distal end.

[0131] In some examples, as shown in FIGS. 8 and 9, the second clamping arm 120 is connected with a second guide plate 152 configured to cooperatively constrain and guide at least part of the second clamping arm 420 with the second jaw slot 122; the second guide plate 152 can play a guiding role at the junction of the ejection channel 220 and the second clamping arm 120, and when the extension direction of the second clamping arm 120 is different from the extension direction of the ejection channel 220, the reliability of the clip feeding can be improved. In addition, the second guide plate 152 can also limit at least part of the second clamping arm 420 from disengaging from the second jaw slot 122, but at the same time allow the second clamping arm 420 to move from the proximal end to the distal end.

[0132] It should be noted that if the clip produces creep in the clip storage, causing the clip to be unable to open under the action of its own elasticity when moving to the jaw assembly, the first guide plate 151 and the second guide plate 152 described above also guide or force the clip 400 to open, so that the distal end of the first clamping arm 410 and the distal end of the second clamping arm 420 are separated.

[0133] In some examples, as shown in FIGS. 8 and 9, when the first clamping arm 410 is provided with the first protrusion 412 and the second clamping arm 420 is provided with the second protrusion 422, the first guide plate 151 can limit the first protrusion 412 of the first clamping arm 410 from disengaging from the first jaw slot 112, and allow the main body of the first clamping arm 410 to pass through; the second guide plate 152 can limit the second protrusion 422 of the second clamping arm 420 from disengaging from the second jaw slot 122, and allow the main body of the second clamping arm 420 to pass through.

[0134] In some examples, as shown in FIGS. 8 and 9, the first guide plate 151 includes a first sub-guide plate 151 A and a second sub-guide plate 151B, which are respectively located on two groove walls of the first jaw groove 112 and are spaced apart; the first sub-guide plate 151 A and the second sub-guide plate 151B can be configured to limit at least part (for example, the first protruding part 412) of the first clamping arm 410 from escaping from the first jaw groove 112, so as to jointly constrain and guide at least part of the first clamping arm 410 with the first jaw groove 112; the space between the first sub-guide plate 151 A and the second sub-guide plate 151B can allow the main body part of the first clamping arm 410 to pass through.

[0135] In some examples, as shown in FIGS. 8 and 9, the second guide plate 152 includes a third sub-guide plate 152A and a fourth sub-guide plate 152B, which are respectively located on two groove walls of the second jaw groove 122 and are spaced apart; the third sub-guide plate 152A and the fourth sub-guide plate 152B can be configured to limit at least part (for example, the second protruding part 422) of the second clamping arm 420 from escaping from the second jaw groove 122, so as to jointly constrain and guide at least part of the second clamping arm 420 with the second jaw groove 122; the space between the third sub-guide plate 152A and the fourth sub-guide plate 152B can allow the main body part of the second clamping arm 420 to pass through.

[0136] In some examples, as shown in FIGS. 8 and 9, at least one of the first sub-guide plate 151 A, the second sub-guide plate 151B, the third sub-guide plate 152A and the fourth sub-guide plate 152B described above includes a connecting part 153 and an elastic part 154, the connecting part 153 is connected with the corresponding groove wall, and the elastic part 154 is connected with the connecting part 153 but can be displaced or deformed relative to the connecting part 153, so as to constrain without causing the clip to be stuck.

[0137] For example, as shown in FIGS. 8 and 9, the connecting part 153 and the elastic part 154 jointly form a U-shaped structure, the connecting part 153 and the elastic part 154 are two parallel parts of the U-shaped structure respectively, the elastic part 154 is spaced apart from the connecting part 153 and can be displaced relative to the connecting part 153.

[0138] In some examples, as shown in FIGS. 8 and 9, the first sub-guide plate 151 A, the second sub-guide plate 151B, the third sub-guide plate 152A and the fourth sub-guide plate 152B described above all include the connecting part 153 and the elastic part 154 described above.

[0139] In some examples, as shown in FIGS. 8 and 9, the above-described ejecting mechanism 210 further comprises a deceleration structure 260 located at a contact area of the first ejecting plate 210A and / or the second ejecting plate 210B for contacting the clip 400, the deceleration structure 260 is configured to contact the clip 400 and apply resistance to the moving clip 400 to reduce the speed of the clip 400, so that the speed of the clip 400 is not too fast to cause the jaw assembly 100 to fly out. In some examples, as shown in FIGS. 8 and 9, the deceleration structure 260 is protruded or recessed relative to the contact area, and the deceleration structure 260 is configured to hinder the movement of the clip 400 to apply resistance to the moving clip 400, so as to reduce the speed of the clip 400. For example, the deceleration structure 260 is configured to hinder the movement of the clip 400 in the direction from the clip storage 300 to the jaw assembly 100 to apply resistance to the moving clip 400.

[0140] Of course, the embodiments of the present disclosure include but are not limited to this, the deceleration structure can also increase the friction force of the clip by having a larger friction coefficient than the rest of the contact area to apply resistance to the moving clip, so as to reduce the speed of the clip. For example, the deceleration structure can be formed of a material with a larger friction coefficient, or the deceleration structure can also have a friction pattern on the surface to increase the friction coefficient.

[0141] In some examples, as shown in FIGS. 8 and 9, the third guide slot 233 comprises the above-described deceleration structure 260, which is configured to contact the hinge portion 430 to reduce the speed of the hinge portion 430, thereby reducing the speed of the clip 400. Since the hinge portion is located in the middle of the clip, the clip can be more balanced by decelerating the hinge portion.

[0142] In some examples, as shown in FIGS. 8 and 9, a first limiting portion 241 is provided between the first guide slot 231 and the third guide slot 233, and a second limiting portion 242 is provided between the third guide slot 233 and the second guide slot 232, that is, the first limiting portion 241 and the second limiting portion 242 constitute two side walls of the third guide slot 233 in the vertical direction. One of the first limiting portion 241 and the second limiting portion 242 comprises a deceleration protrusion 261, and / or the other of the first limiting portion 241 and the second limiting portion 242 comprises a deceleration recess 262, and the above-described deceleration structure 260 comprises the deceleration protrusion 261 and / or the deceleration recess 262. In this way, the clip applier can reduce the speed of the hinge portion 430 by providing the deceleration protrusion 261 and / or the deceleration recess 262, thereby reducing the speed of the clip 400.

[0143] It is to be noted that the case where one of the first and second limiting portions includes a deceleration protrusion and the other includes a deceleration recess includes the following cases: (1) one of the first and second limiting portions includes a deceleration protrusion, and neither of the first and second limiting portions includes a deceleration structure; (2) one of the first and second limiting portions includes a deceleration protrusion, and the other includes a deceleration recess; (3) one of the first and second limiting portions does not include a deceleration structure, and the other includes a deceleration recess.

[0144] In some examples, as shown in FIGS. 8 and 9, one of the first and second limiting portions 241, 242 includes a deceleration protrusion 261, and the other includes a deceleration recess 262, which is opposite and spaced apart from the deceleration protrusion 261, and the spacing between the deceleration recess 262 and the deceleration protrusion 261 is configured to allow at least part of the hinge portion 430 to pass therethrough.

[0145] Of course, the embodiments of the present disclosure include but are not limited to this case. When both the first and second ejection clamps include a third guide slot, a deceleration protrusion can be arranged in one of the two third guide slots, and a deceleration recess can be arranged in the other, and the deceleration protrusion and the deceleration recess are opposite and spaced apart. That is, one of the first and second limiting portions of the first ejection clamp includes a deceleration protrusion, and the other of the first and second limiting portions of the second ejection clamp includes a deceleration protrusion, and a deceleration recess is opposite and spaced apart from the deceleration protrusion, and the spacing between the deceleration recess and the deceleration protrusion is configured to allow at least part of the hinge portion to pass therethrough.

[0146] In some examples, as shown in FIGS. 8 and 9, the protrusion direction of the deceleration protrusion 261 is parallel to the arrangement direction of the first and second guide slots 231, 232; similarly, the recess direction of the deceleration recess 262 is also parallel to the arrangement direction of the first and second guide slots 231, 232.

[0147] In some examples, as shown in FIGS. 8 and 9, the clip applier 500 includes a clip feed portion 525 configured to push the clip 400 into the jaw assembly 100, at least part of the first clip arm 410 of the clip 400 is located at the distal end of the first jaw arm 110 of the jaw assembly 100, and at least part of the second clip arm 420 of the clip 400 is located at the distal end of the second jaw arm 120 of the jaw assembly 100; the clip applier 500 includes a sleeve 535 configured to accommodate part of the jaw assembly 100 therein so that the jaw assembly 100 is closed.

[0148] In some examples, as shown in FIGS. 8 and 9, the jaw assembly 200 further comprises a steering module 290 configured to rotate the clip pocket by turning. Of course, the embodiments of the present disclosure include but are not limited to this, and the jaw assembly is also not provided with the steering module.

[0149] FIG. 10 is a structural schematic diagram of another jaw assembly provided by an embodiment of the present disclosure. As shown in FIG. 10, the jaw assembly 200 comprises a clip pocket mounting groove 250 located at the side of the ejection mechanism 210 close to the proximal end of the jaw assembly 200, which is configured to mount the clip pocket 300.

[0150] In some examples, as shown in FIG. 10, the ejection mechanism 210 comprises a first ejection plate 210A and a second ejection plate 210B arranged at intervals, and the ejection channel 220 is defined between the first ejection plate 210A and the second ejection plate 210B; at least one of the first ejection plate 210A and the second ejection plate 210B comprises the first guide groove 231 described above, at least one of the first ejection plate 210A and the second ejection plate 210B comprises the second guide groove 232 described above, and at least one of the first ejection plate 210A and the second ejection plate 210B comprises the third guide groove 233 described above.

[0151] In some examples, as shown in FIG. 10, the first limiting portion 241 above the third guide groove 233 can be provided with a deceleration recess 262, and the second limiting portion 242 below the third guide groove 233 can be provided with a deceleration protrusion 261. For example, the deceleration recess 262 described above can be a triangular recess, and the deceleration protrusion 261 described above can be a triangular protrusion.

[0152] FIG. 11 is a cross-sectional schematic diagram of another jaw assembly provided by an embodiment of the present disclosure. As shown in FIG. 11, another form of deceleration structure is provided in this example. The deceleration structure 260 also comprises a deceleration protrusion 261 and a deceleration recess 262; different from the embodiments shown in FIGS. 8 and 9, the protrusion direction of the deceleration protrusion 261 is perpendicular to the arrangement direction of the first guide groove 231 and the second guide groove 232; the recess direction of the deceleration recess 262 is also perpendicular to the arrangement direction of the first guide groove 231 and the second guide groove 232.

[0153] In some examples, as shown in FIG. 11, the deceleration protrusion 261 described above can be a protrusion in the contact area of the third guide groove 233 and the clip 400 which is perpendicular to the arrangement direction of the first guide groove 231 and the second guide groove 232; and the deceleration recess 262 described above can be a recess in the contact area of the third guide groove 233 and the clip 400 which is perpendicular to the arrangement direction of the first guide groove 231 and the second guide groove 232.

[0154] It is worth noting that the above examples all introduce the deceleration structure in the form of deceleration protrusions or deceleration recesses. However, the embodiments of the present disclosure include but are not limited to this, and the deceleration part of the above deceleration structure can also include other forms. For example, the deceleration structure can be a friction increasing part, such as a silica gel pad / rubber pad, which reduces the speed of the clip by increasing the friction. Alternatively, the deceleration structure can include a plurality of small protrusions to form a friction increasing area, etc. Therefore, as long as the ejection mechanism includes a deceleration structure and the deceleration structure can reduce the speed of the clip, the specific structure of the deceleration structure is not limited by the embodiments of the present disclosure.

[0155] In some examples, as shown in FIGS. 4 and 5, the jaw assembly 100 is configured to be in a closed state when the clip 400 moves from the clip storage 300 to the ejection mechanism 210; in response to the clip 400 entering the jaw assembly 100, the jaw assembly 100 enters an open state from the closed state. It should be noted that the open state of the jaw assembly 100 described above refers to the state in which the first jaw arm 110 and the second jaw arm 120 of the jaw assembly 100 are spread apart. Thus, when the clip 400 moves from the clip storage 300 to the ejection mechanism 210, the jaw assembly 100 being in a closed state can increase the resistance of the clip advancing, thereby reducing the speed of the clip and avoiding the clip flying out of the jaw assembly 100.

[0156] In some examples, in response to the clip 400 entering the jaw assembly 100, the clip 400 causes the jaw assembly 100 to enter an open state from a closed state. For example, during the process of the clip 400 entering the jaw assembly 100, the clip 400 gradually spreads apart the jaw assembly 100. During this process, since the extension direction of the first jaw arm 110 in the closed state is basically the same as the extension direction of the first guide groove 231, the first clip arm 410 or the first protrusion part 412 can more smoothly enter the first jaw arm 110; similarly, since the extension direction of the second jaw arm 120 in the closed state is basically the same as the extension direction of the second guide groove 232, the second clip arm 420 or the second protrusion part 422 can more smoothly enter the second jaw arm 120.

[0157] The following exemplary provides a way that the jaw assembly 100 is configured to be in the closed state when the clip 400 is moved from the clip storage 300 to the clip applying mechanism 210, with reference to FIGS. 12-20, the embodiment of the present disclosure provides a clip applier, which includes a main body 0100, a jaw assembly 0300, and a clip body assembly 200. The main body 0100 is connected with a fixed structure 0140; the jaw assembly 0300 includes two jaw arms 0310 and a closing spring 0320, at least one of the jaw arms 0310 is rotatably connected to the fixed structure 0140, the closing spring 0320 is connected to the two jaw arms 0310, the closing spring 0320 is configured to provide a force for the two jaw arms 0310 to move towards each other, the jaw assembly 0300 has an open state and a closed state; the clip body assembly 200 is connected to the main body 0100, the clip body assembly 200 includes a clip feeding mechanism 0220 and a clip applying mechanism 0230, the clip body assembly 200 is configured to install a clip storage 0210 for accommodating a clip 0211; the clip 0211 has an open state, a semi-closed state, and a closed state, the clip 0211 in the clip storage 0210 is in the semi-closed state; the clip applying mechanism 0230 includes a first sleeve 0232b, the first sleeve 0232b is sleeved on the fixed structure 0140.

[0158] The clip applier has an initial state, a clip feeding state, and a clip applying state. One working process of the clip applier at least includes the following actions:

[0159] With reference to FIGS. 13 and 17, in the initial state, the first sleeve 0232b abuts against the jaw arm 0310 so that the jaw assembly 0300 is in the open state, and the closing spring 0320 stores energy;

[0160] With reference to FIGS. 14 and 18, in the clip feeding state, in response to the clip applying mechanism 0230 being driven, the clip applying mechanism 0230 moves distally so that the first sleeve 0232b is disengaged from the abutment with the jaw arm 0310, and the closing spring 0320 releases the energy so that the two jaw arms 0310 move towards each other, thereby switching the jaw assembly 0300 from the open state to the closed state; with reference to FIGS. 15 and 19, in response to the clip feeding mechanism 0220 moving distally along the axial direction of the clip body assembly 200, the clip feeding mechanism 0220 drives the clip 0211 in the clip storage 0210 to enter the jaw assembly 0300, so that the clip 0211 is opened from the semi-closed state to the open state, thereby switching the jaw assembly 0300 from the closed state to the open state; it should be noted that the term “axial direction” is the length direction of the guide shaft 0130;

[0161] Referring to FIG. 16 and FIG. 20, in the clipping state, in response to the continued distal movement of the clipping mechanism 0230 along the axial direction of the handle assembly 200, the first sleeve 0232b moves distally and accommodates a portion of each of the two jaw arms 0310, so that the jaw assembly 0300 switches from the open state to the closed state, thereby causing the clips 0211 in the jaw assembly 0300 to switch from the open state to the closed state.

[0162] In the clip applier provided by the embodiments of the present disclosure, the jaw assembly 0300 is provided with a closing elastic member 0320 connected to the two jaw arms 0310, which provides a force for the two jaw arms 0310 to move closer to each other. In the clip feeding state, the distal movement of the clipping mechanism 0230 causes the closing elastic member 0320 to release energy, thereby causing the jaw assembly 0300 to close. As the clips 0211 move from the clip storage 0210 to the jaw assembly 0300, the clips 0211 gradually release energy to gradually open from the semi-closed state to the open state. In the process of the gradual opening of the clips 0211, the clips 0211 resist the elastic force of the closing elastic member 0320 to cause the jaw assembly 0300 to open again. The elastic force of the closing elastic member 0320 can slow down the opening speed of the clips 0211 and increase the pressure between the clips 0211 and the jaw arms 0310, thereby avoiding the clips 0211 from flying out of the jaw assembly 0300 and reducing the failure rate of the clip applier. In addition, in the initial state, the first sleeve 0232b abuts against the jaw arms 0310 to keep the jaw assembly 0300 in the open state. In the clip feeding state, the first sleeve 0232b is disengaged from the jaw arms 0310 to cause the jaw assembly 0300 to close. In the clipping state, the first sleeve 0232b continues to move distally to cause the jaw assembly 0300, which is opened by the clips 0211, to close again. The first sleeve 0232b can not only keep the jaw assembly 0300 open in the initial state, but also cause the jaw assembly 0300 to close in the clipping state. Therefore, the structure of the clip applier is relatively simple.

[0163] It should be noted that, for example, referring to FIG. 12, FIG. 17 to FIG. 20, FIG. 38 to FIG. 45, the clip storage 0210 can be detachably connected to the handle assembly 200, and the clip storage 0210 can be independent of the clip applier. Alternatively, the clip storage 0210 can be fixed to the handle assembly 200 and serve as a part of the clip applier. The specific form of the clip storage 0210 has no effect on the working mode of the pre-push assembly 600 of the embodiments of the present disclosure. Hereinafter, the clip storage 0210 is taken as an example to illustrate how the pre-push assembly 600 of the present disclosure works in a specific application scenario, and should not be understood as a limitation on the concept of the present disclosure.

[0164] In some embodiments, referring to FIG. 21, the first sleeve 0232b has a first limiting portion 0232d, and referring to FIG. 22, the jaw arm 0310 has a second limiting portion 0311. Referring to FIG. 13, in the initial state, the first limiting portion 0232d is located on the rotation path of the second limiting portion 0311 when the jaw assembly 0300 switches from the self-opening state to the closed state, the first limiting portion 0232d abuts against the second limiting portion 0311, so that the jaw assembly 0300 remains in the open state, and the first limiting portion 0232d directly blocks the second limiting portion 0311 on the rotation path of the second limiting portion 0311; referring to FIG. 14, in the clamping state, in response to the driving of the clamping mechanism 0220, the first sleeve 0232b moves distally, so that the first limiting portion 0232d moves away from the second limiting portion 0311 and moves out of the rotation path of the second limiting portion 0311 when the jaw assembly 0300 switches from the open state to the closed state, so as to release the limiting of the jaw arm 0310, and thus the elastic member 0320 releases energy to make the two jaw arms 0310 close to each other until the jaw assembly 0300 switches to the closed state.

[0165] For example, referring to FIGS. 13-16, the second limiting portion 0311 is located proximally to the rotation axis of the jaw arm 0310, and the second limiting portion 0311 of each jaw arm 0310 protrudes away from the other jaw arm 0310, and the distal side of the second limiting portion 0311 forms a first avoiding space; the first limiting portion 0232d protrudes relative to the inner wall of the first sleeve 0232b, and the proximal side of the first limiting portion 0232d forms a second avoiding space. Referring to FIG. 13, in the initial state, the first limiting portion 0232d abuts against the second limiting portion 0311 on the side of each jaw arm 0310 away from the other jaw arm 0310. Referring to FIG. 14, in the clamping state, the distal movement of the first sleeve 0232b makes the first limiting portion 0232d move distally to the second limiting portion 0311, the first limiting portion 0232d and the second limiting portion 0311 are staggered with each other, the first limiting portion 0232d enters the second avoiding space, and the second limiting portion 0311 enters the first avoiding space, so that the jaw arm 0310 can rotate smoothly to make the jaw assembly 0300 enter the closed state.

[0166] Referring to FIGS. 13-16, 21, 22, the first limiting portion 0232d has a first abutting portion 0232e, and the second limiting portion 0311 has a second abutting portion 0311a, which extends obliquely toward the direction of the rotation axis of the jaw 0310 in the proximal-to-distal direction. Referring to FIG. 13, in the initial state, the first abutting portion 0232e abuts against the second abutting portion 0311a; referring to FIG. 14, in the clamped state, in response to the driving of the clamping mechanism 0230, the first sleeve 0232b moves distally, so that the first abutting portion 0232e slides relative to the second abutting portion 0311a until the first abutting portion 0232e disengages from the second abutting portion 0311a, and in the above process, the jaw 0310 gradually rotates as the first abutting portion 0232e slides relative to the second abutting portion 0311a until the jaw assembly 0300 enters the closed state, and the movement of the jaw 0310 is relatively smooth, and the stability is high.

[0167] For example, referring to FIGS. 24-A and 24-B, the first abutting portion 0232e can also be arranged to extend obliquely toward the direction of the rotation axis of the jaw 0310; or the second abutting portion 0311a can also be arranged to extend obliquely toward the direction of the rotation axis of the jaw 0310, and the first abutting portion 0232e can also be arranged to extend obliquely toward the direction of the rotation axis of the jaw 0310, which can achieve the effects of the above embodiments.

[0168] In other embodiments, the first limiting portion 0232d can also be arranged to be located on one side of the second limiting portion 0311 in the extension direction of the rotation axis of the second limiting portion 0311 in the initial state, and the first limiting portion 0232d abuts against the second limiting portion 0311 to generate a friction force therebetween that can prevent the rotation of the second limiting portion 0311, so as to keep the jaw assembly 0300 in the open state.

[0169] Referring to FIGS. 13-16, 25-A-27-B, the closing elastic member 0320 has a first connecting structure 0321 and a second connecting structure 0322, the first connecting structure 0321 abuts against one of the jaws 0310, and the second connecting structure 0322 abuts against the other jaw 0310, and the first connecting structure 0321 and the second connecting structure 0322 are configured to have a relative close or far tendency in the initial state, so as to cause the two jaws 0310 to approach each other when the closing elastic member 0320 releases energy.

[0170] For example, referring to FIGS. 13-16, 25-A and 25-B, the first connecting structure 0321 is abutted to one of the two jaw arms 0310 at the distal side of the rotation axis thereof, and the second connecting structure 0322 is abutted to the other of the two jaw arms 0310 at the distal side of the rotation axis thereof, and the first connecting structure 0321 and the second connecting structure 0322 are configured to have a relatively close tendency in the initial state, so as to enable the jaw assembly 0300 to enter the closed state when the jaw arms 0310 lose the constraint.

[0171] For example, referring to FIGS. 26-A and 26-B, the first connecting structure 0321 is abutted to one of the two jaw arms 0310 at the proximal side of the rotation axis thereof, and the second connecting structure 0322 is abutted to the other of the two jaw arms 0310 at the proximal side of the rotation axis thereof. The first connecting structure 0321 and the second connecting structure 0322 are configured to have a relatively far tendency in the initial state, so as to enable the jaw assembly 0300 to close when the jaw arms 0310 lose the constraint.

[0172] For example, referring to FIGS. 27-A and 27-B, the first connecting structure 0321 is abutted to one of the two jaw arms 0310 at the proximal side of the rotation axis thereof, and the second connecting structure 0322 is abutted to the other of the two jaw arms 0310 at the proximal side of the rotation axis thereof, and the first connecting structure 0321 and the second connecting structure 0322 are configured to have a relatively close tendency in the initial state, so as to enable the jaw assembly 0300 to close when the jaw arms 0310 lose the constraint.

[0173] The structure of the closing elastic member 0320 can be various, in some embodiments, the closing elastic member 0320 comprises a first abutment segment 0323, a connecting segment 0324 and a second abutment segment 0325, the first abutment segment 0323 and the second abutment segment 0325 both extend in the direction from proximal to distal, the first abutment segment 0323 has the first connecting structure 0321, the second abutment segment 0325 has the second connecting structure 0322, and the connecting segment 0324 has elasticity.

[0174] The structure of the connecting segment 0324 can be various, for example, referring to FIGS. 13-16 and 23, the first abutment segment 0323, the connecting segment 0324 and the second abutment segment 0325 are connected in sequence and relatively bent, the closing elastic member 0320 occupies a small space, which is conducive to reducing the size of the jaw assembly 0300; for example, referring to FIGS. 25-A and 25-B, the connecting segment 0324 is in a spiral shape, the central axis of the connecting segment 0324 is parallel to the rotation axis of the jaw arm 0310, one end of the connecting segment 0324 is connected to the first abutment segment 0323 and the other end is connected to the second abutment segment 0325, that is, the closing elastic member 0320 is a torsion spring, the spiral connecting segment 0324 can provide a larger elastic force and has a longer service life.

[0175] Referring to FIGS. 13-16 and 22, the jaw 0310 includes a body 0312 and a limiting protrusion 0313 connected to a side of the body 0312 and protruding relative to the body 0312, the closing elastic member 0320 is arranged around the limiting protrusion 0313, the limiting protrusion 0313 can provide a mounting position for the closing elastic member 0320, support the first abutting section 0323 and the second abutting section 0325 to ensure the stability of the mounting of the closing elastic member 0320.

[0176] Referring to FIG. 22, the jaw 0310 further includes a stopper 0314 connected to a side of the limiting protrusion 0313 away from the body 0312, the stopper 0314 and the body 0312 define a limiting space therebetween, the first abutting section 0323 and the second abutting section 0325 are at least partially accommodated in the limiting space, the stopper 0314 and the body 0312 can limit the first abutting section 0323 and the second abutting section 0325 on opposite sides of the first abutting section 0323 and the second abutting section 0325, so that the first abutting section 0323 and the second abutting section 0325 abut the jaw 0310 more stably, thereby improving the stability of the mounting of the closing elastic member 0320.

[0177] Referring to FIG. 22, the jaw 0310 has a mounting hole 0315, referring to FIGS. 13-16, the first connecting structure 0321 is inserted into the mounting hole 0315 of one of the jaws 0310, and the second connecting structure 0322 is inserted into the mounting hole 0315 of the other jaw 0310, the first connecting structure 0321 and the second connecting structure 0322 abut the inner wall of the mounting hole 0315 to apply a force of approaching each other to the two jaws 0310. The mounting hole 0315 can reliably limit the first connecting structure 0321 and the second connecting structure 0322, thereby improving the stability of the mounting of the closing elastic member 0320.

[0178] In other embodiments, referring to FIGS. 26-A and 26-B, 27-A and 27-B, the closing elastic member 0320 can also be a spring, one end of the spring has the first connecting structure 0321 and the other end has the second connecting structure 0322.

[0179] The following describes the manner in which the clip applier in the feeding state drives the clip applying mechanism 0230 to move distally according to some embodiments of the present disclosure, with reference to FIGS. 17-20, 28-36. It should be noted that the following is only an example and does not limit the present disclosure.

[0180] Referring to FIGS. 28-36, the clip applier further includes a pre-push assembly 600, the pre-push assembly 600 includes a pre-push member 610, the pre-push member 610 is movably connected to the main body 0100, the pre-push member 610 has a first position and a second position distal to the first position.

[0181] The clip applier has an initial state, a clip feeding state and a clip applying state. At least the following actions are involved in a working process of the clip applier:

[0182] Referring to FIG. 28, in the initial state, the pre-push member 610 is located at a first position;

[0183] Referring to FIGS. 28-29, 13-14, 17-18, in the clip feeding state, in response to the pre-push member 610 being driven, the pre-push member 610 pushes the clip applying mechanism 0230 and moves from the first position to a second position distally, so that the clip applying mechanism 0230 moves distally and the jaw assembly 0300 is closed; referring to FIGS. 29-30, 14-15, 18-19, in response to the clip feeding mechanism 0220 moving distally along the axial direction of the handle assembly 200, the pre-push member 610 remains at the second position, and the clip feeding mechanism 0220 drives the clip 0211 to continue moving distally to enter the jaw assembly 0300;

[0184] Referring to FIGS. 30-32, 15-16, 19-20, in the clip applying state, in response to the clip applying mechanism 0230 being driven, the clip applying mechanism 0230 moves distally along the axial direction of the handle assembly 200, so that the jaw assembly 0300 is closed to drive the clip 0211 in the jaw assembly 0300 to close.

[0185] Referring to FIGS. 28-36, the pre-push assembly 600 further comprises a driving member 620, which is rotatably connected to the main body 0100, as shown in FIGS. 28-36. Referring to FIGS. 28-30, 34-36, in the clip feeding state, in response to the clip feeding mechanism 0220 moving distally along the axial direction of the handle assembly 200, the clip feeding mechanism 0220 pushes the driving member 620 to rotate the driving member 620, so that the driving member 620 abuts against the pre-push member 610 and moves the pre-push member 610 from the first position to the second position.

[0186] Referring to FIG. 37, the driving member 620 has a stop structure 621. Referring to FIGS. 28 and 34, in the initial state, the driving member 620 is at an initial position; referring to FIGS. 28-30, 34-36, in the clip feeding state, in response to the driving member 620 being driven to rotate from the initial position to a stop position, the stop structure 621 abuts against the pre-push member 610, and at least one point on the stop structure 621 is parallel to the axial direction of the handle assembly 200 in the projection of the extension direction of the rotation axis of the driving member 620, i.e., the dotted line shown in FIG. 36, at this time, the driving member 620 can remain at the stop position without external force, so that the pre-push member 610 remains at the second position.

[0187] Referring to FIG. 36, in the clip feeding state, in response to the driving member 620 being driven to rotate from the initial position to the stop position, in the projection along the extension direction of the rotation axis of the driving member 620, the connecting line between the stop structure 621 of the driving member 620 at the stop position and the contact position of the pre-push member 610 is perpendicular to the axial direction of the jaw assembly 200, so that the driving member 620 can be more stably kept at the stop position.

[0188] Referring to FIGS. 28-33 and 17-20, the clip applying mechanism 0230 includes a second reset member 0233 and a second push member 0231, the second push member 0231 is movably connected to the main body 0100, and the second push member 0231 is configured to move distally to close the jaw assembly 0300. For example, referring to FIGS. 17-20, the clip applying mechanism 0230 further includes a clip applying member 0232 connected to the second push member 0231, which can be driven to move distally when the second push member 0231 moves distally, and the clip applying member 0232 closes the jaw assembly 0300. The second reset member 0233 is arranged between the main body 0100 and the second push member 0231, and the second reset member 0233 is configured to store energy when the second push member 0231 moves distally. The clip applying pliers include a pushing part 0221g arranged on the part for driving the pre-push member 610 to move.

[0189] Referring to FIGS. 13-20, the pre-push member 610 is driven by the clip feeding mechanism 0220 to move from the first position to the second position. Referring to FIG. 31, the pushing part 0221g is arranged on the clip feeding mechanism 0220.

[0190] In the delivery state, referring to FIGS. 28-29, in response to the delivery mechanism 0220 moving axially along the shaft assembly 200 distally, the delivery mechanism 0220 pushes the driving member 620 so that the driving member 620 rotates distally from the initial position to the stop position, so that the pre-push member 610 moves from the first position to the second position, so that the pre-push member 610 drives the clamping mechanism 0230 to move distally, and the second reset member 0233 stores energy. At this time, the distal end of the pre-push member 610 abuts against the second push member 0231, the second push member 0231 transmits the proximally-directed elastic force generated by the second reset member 0233 to the pre-push member 610, the proximal end of the pre-push member 610 abuts against the stop structure 621, the driving member 620 applies a distally-directed force to the pre-push member 610, and the pre-push member 610, the driving member 620, and the clamping mechanism 0230 are in force balance. Thus, referring to FIGS. 29-30, in response to the delivery mechanism 0220 continuing to move axially along the shaft assembly 200 distally, the delivery mechanism 0220 disengages from the driving member 620 and continues to push the clip 0211 into the jaw assembly 0300, the driving member 620 remains in the stop position, the pre-push member 610 remains in the second position, and the clamping mechanism 0230 remains in the position after being pushed by the pre-push member 610. The position of the clamping mechanism 0230 remains stable, which can avoid the clamping mechanism 0230 from accidentally moving and causing the jaw assembly 0300 to open during the movement of the clip 0211 into the jaw assembly 0300, and thus can ensure the reliability of the restraint of the clip 0211 by the jaw assembly 0300 during the movement of the clip 0211 into the jaw assembly 0300.

[0191] Referring to FIGS. 28-33, the pre-push assembly 600 further includes a first elastic member 630, one end of the first elastic member 630 is connected to the main body 0100, and the other end of the first elastic member 630 is connected to the pre-push member 610. For example, the pre-push member 610 is provided with a mounting protrusion 613, and the other end of the first elastic member 630 is connected to the mounting protrusion 613.

[0192] Referring to FIG. 28, in the initial state, the first elastic member 630 stores energy. For example, the first elastic member 630 can be in a stretched state or a compressed state in the initial state. At this time, the pre-push member 610 is subjected to a proximally-directed force applied by the second reset member 0233 and a distally-directed force applied by the first elastic member 630, and the two forces balance the force on the pre-push member 610.

[0193] Referring to FIGS. 28-30, in the clamping state, in response to the pre-push piece 610 pushing the clamping mechanism 0230 and moving from the first position to the second position, the clamping mechanism 0230 moves distally, the first elastic piece 630 releases part of the energy, at this time, the distally directed force exerted by the first elastic piece 630 on the pre-push piece 610 is smaller than that in the initial state, the pre-push piece 610 is simultaneously subjected to the distally directed force exerted by the first elastic piece 630, the distally directed force exerted by the driving piece 620, and the proximally directed force exerted by the second reset piece 0233, the three forces balance the force on the pre-push piece 610, so that the pre-push piece 610 can be kept in the second position;

[0194] Referring to FIGS. 30-32, in the clamping state, in response to the clamping mechanism 0230 continuing to move distally along the axial direction of the jaw assembly 200, the clamping mechanism 0230 is separated from the pre-push piece 610, breaking the force balance of the pre-push piece 610 in the clamping state, at this time, the first elastic piece 630 releases energy, so that the pre-push piece 610 moves distally from the second position, thereby making the pre-push piece 610 separate from the stop structure 621, the driving piece 620 loses the constraint and moves from the stop position to the initial position, thereby making room for the reset of the pre-push piece 610 and preparing for the reset state of the clamping forceps;

[0195] Referring to FIGS. 32, 33 and 28, in the reset state, in response to the clamping mechanism 0230 and the clamping mechanism 0220 moving proximally, the clamping mechanism 0230 pushes the pre-push piece 610 to move to the first position, and the first elastic piece 630 stores energy again, the abutting portion 0221g pushes the driving piece 620 to move from the initial position to the avoiding position, and then the abutting portion 0221g separates from the driving piece 620, and the driving piece 620 moves from the avoiding position to the initial position.

[0196] The first elastic piece 630 is arranged to enable the pre-push piece 610 to keep the position of the clamping mechanism 0230 in the clamping state and to reset smoothly in the reset state, thereby ensuring that the clamping forceps can smoothly complete the action sequence that can be executed cyclically.

[0197] Referring to FIGS. 28-33, the pre-push assembly 600 further comprises a second elastic piece 640, one end of the second elastic piece 640 is connected to the main body 0100, and the other end of the second elastic piece 640 is connected to the driving piece 620, for example, the second elastic piece 640 can be a torsion spring.

[0198] Referring to FIGS. 28-30, in the clamping state, in response to the abutting portion 0221g pushing the driving piece 620 to move from the initial position to the stop position, the second elastic piece 640 stores energy;

[0199] Referring to FIGS. 30-32, in the clamping state, in response to the axial distal movement of the clamping mechanism 0230 along the shaft assembly 200, the first elastic member 630 releases energy, causing the pre-push member 610 to move distally from the second position, so that the pre-push member 610 is disengaged from the stop structure 621a, and the second elastic member 640 releases energy, causing the driving member 620 to move from the stop position to the initial position;

[0200] Referring to FIGS. 32, 33 and 28, in the reset state, in response to the proximal movement of the clamping mechanism 0230 and the feeding mechanism 0220, the pushing part 0221g pushes the driving member 620, causing the driving member 620 to move from the initial position to the avoidance position, and the second elastic member 640 stores energy, and then the pushing part 0221g disengages from the driving member 620, and the second elastic member 640 releases energy, causing the driving member 620 to move from the avoidance position to the initial position.

[0201] Referring to FIGS. 28-35, the pre-push member 610 has a guide groove 612, and the main body 0100 is connected with a guide part 0110, which is accommodated in the guide groove 612, and the extension direction of the guide groove 612 is parallel to the axial direction of the shaft assembly 200. When the pre-push member 610 moves relative to the main body 0100, the guide groove 612 moves relative to the guide part 0110, and the cooperation of the two can guide the movement of the pre-push member 610, thereby improving the stability of the movement of the pre-push member 610.

[0202] The structure and working mode of the fixing structure 0140, the feeding mechanism 0220, the clamping mechanism 0230 and the clip cartridge 0210 in the clamping forceps provided by some embodiments of the present disclosure will be introduced below in combination with FIGS. 17-20 and 38-48. It should be noted that the following content is only an example and does not limit the present disclosure.

[0203] Referring to FIGS. 17-20, the feeding member 0222 includes a first pushing part 0222a, a second pushing part 0222b and a feeding part 0222c connected in sequence from proximal to distal, the first pushing part 0222a is connected to the first pushing member 0221, the second pushing part 0222b has elastic deformation capability, and the feeding part 0222c is used to push the clip 0211; the clamping member 0232 includes a first sleeve 0232b, a second sleeve 0232a and a pivot part 0232c, the first sleeve 0232b and the second sleeve 0232a are rotationally connected through the pivot part 0232c, the second pushing part 0222b can be deformed when the second sleeve 0232a rotates relative to the first sleeve 0232b, the first sleeve 0232b is connected to the second pushing member 0231, the jaw assembly 0300 is located at the distal end of the second sleeve 0232a, the feeding member 0222 is accommodated in the interior of the clamping member 0232, and the axial direction of the shaft assembly 200 is the length direction of the first sleeve 0232b.

[0204] Referring to FIGS. 13-18, the clip feeding mechanism 0220 and the clip applying mechanism 0230 are driven by the operation assembly 400, which includes a clip feeding handle 410 and a clip applying handle 420, both of which are movably connected to the main body 0100.

[0205] Referring to FIGS. 38-39, the clip storage 0210 has a clip feeding channel 0212, opposite ends of which are provided with an inlet 0212a and an outlet 0212b, respectively, and a plurality of clips 0211 are stored in the clip storage 0210, which are sequentially stacked in a direction perpendicular to the inlet 0212a and the outlet 0212b, with one of the clips 0211 located in the clip feeding channel 0212; the clip storage 0210 is further provided with a biasing member 0213 and a support member 0214, the support member 0214 is movably arranged inside the clip storage 0210, and has a groove for accommodating a single clip 0211, the support member 0214 can keep the plurality of clips 0211 in an orderly stack, one end of the biasing member 0213 abuts against the support member 0214 to apply a force to the plurality of clips 0211 in the clip storage 0210 towards the clip feeding channel 0212.

[0206] Referring to FIGS. 17-20, the main body 0100 is connected with a fixing structure 0140, referring to FIGS. 46-48, the fixing structure 0140 includes a first fixing member 0141 and a second fixing member 0142, the second fixing member 0142 is rotatably connected to the first fixing member 0141, the first fixing member 0141 is connected to the main body 0100, the jaw assembly 0300 includes two jaw arms 0310, both of which are rotatably connected to the second fixing member 0142 at one end, referring to FIG. 48, the second fixing member 0142 has a mounting groove 0142a for accommodating the clip storage 0210. Referring to FIG. 12, the first sleeve 0232b and the second sleeve 0232a of the clip applying member 0232 are both sleeved on the fixing structure 0140, and the first pushing portion 0222a, the second pushing portion 0222b and the clip feeding portion 0222c of the clip feeding member 0222 are all accommodated inside the fixing structure 0140. The fixing structure 0140 can provide a mounting basis for the clip applying member 0232 and the clip feeding member 0222, guide the movement of the clip applying member 0232 and the clip feeding member 0222, and provide a mounting space for the clip storage 0210.

[0207] Referring to FIGS. 17-20 and 38-39, the clip storage 0210 is mounted on the second sleeve 0232a, the inlet 0212a of the clip feeding channel 0212 is used for the clip feeding member 0222 to enter, and the outlet 0212b is communicated with the jaw assembly 0300.

[0208] In the initial state, referring to FIG. 17 and FIG. 42, one clip 0211 in the clip store 0210 is located in the clip feeding channel 0212, for the convenience of description, the clip 0211 is named as the first clip 0211a, the clip feeding part 0222c of the clip feeding member 0222 is located at the entrance 0212a of the clip store 0210;

[0209] The clip applier enters the firing state, referring to FIG. 18 and FIG. 19, FIG. 43 and FIG. 44, the clip feeding handle 410 moves relative to the main body 0100 and abuts against the first push member 0221, to drive the first push member 0221 to move distally, so that the clip feeding member 0222 moves distally, the clip feeding part 0222c moves distally along the clip feeding channel 0212 and abuts against the first clip 0211a located in the clip feeding channel 0212, the clip feeding part 0222c continues to move distally to make the first clip 0211a in the clip feeding channel 0212 pass through the exit 0212b and enter the jaw assembly 0300; then, referring to FIG. 20, the clip applier handle 420 moves relative to the main body 0100 and abuts against the second push member 0231, to drive the second push member 0231 to move distally, so that the clip applying member 0232 moves distally, the first sleeve 0232b pushes the second sleeve 0232a to move distally through the pivoting part 0232c, the second sleeve 0232a accommodates part of the jaw arm 0310 to the inside, to make the two jaw arms 0310 close to each other, thereby driving the first clip 0211a in the jaw assembly 0300 to close;

[0210] The clip applier enters the reset state, referring to FIG. 45, the clip feeding member 0222 moves proximally, so that the clip feeding part 0222c resets to the position in the initial state after passing through the clip feeding channel 0212, the clip feeding channel 0212 is emptied, the biasing member 0213 releases the energy and pushes the supporting member 0214 to move in the direction of the clip feeding channel 0212, so that the remaining clips 0211 in the clip store 0210 move in the direction of the clip feeding channel 0212, until one clip 0211 reaches the clip feeding channel 0212, to prepare for the next firing; the clip feeding handle 410 and the clip applier handle 420 both reset to the positions in the initial state.

[0211] In summary, the clip applier provided by the embodiments of the present disclosure is provided with the jaw assembly 0300, which is provided with the closing elastic member 0320 connected to the two jaw arms 0310. The closing elastic member 0320 provides the two jaw arms 0310 with a force for moving close to each other. In the clip feeding state, the clip feeding mechanism 0230 moves distally to make the closing elastic member 0320 release energy, so as to close the jaw assembly 0300. As the clip 0211 moves from the clip warehouse 0210 to the jaw assembly 0300, the clip 0211 gradually releases energy from the half-closed state to gradually open to the open state. In the process of gradually opening the clip 0211, the clip 0211 resists the elastic force of the closing elastic member 0320 to make the jaw assembly 0300 open again. The elastic force of the closing elastic member 0320 can slow down the opening speed of the clip 0211 and increase the pressure between the clip 0211 and the jaw arm 0310, so as to avoid the clip 0211 from flying out of the jaw assembly 0300 and reduce the failure rate of the clip applier. The following points need to be explained:

[0212] (1) In the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are involved, and other structures can be referred to the general design.

[0213] (2) In the case of no conflict, the features in the same and different embodiments of the present disclosure can be combined with each other.

[0214] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A clip applier, comprising: a jaw assembly including a first jaw arm and a second jaw arm; and a handle assembly configured to mount a clip cartridge, the clip cartridge configured to store a clip, the clip including a first clip arm and a second clip arm; wherein the handle assembly includes a clip ejection mechanism, the clip ejection mechanism located between the clip cartridge and the jaw assembly; the clip ejection mechanism including a first clip ejection plate and a second clip ejection plate spaced apart; at least one of the first clip ejection plate and the second clip ejection plate includes a first guide slot, and at least one of the first clip ejection plate and the second clip ejection plate includes a second guide slot, a first end of the first guide slot in communication with the clip cartridge, a second end of the first guide slot in communication with the first jaw arm, a first end of the second guide slot in communication with the clip cartridge, and a second end of the second guide slot in communication with the second jaw arm; the first guide slot configured to guide at least a portion of the first clip arm of the clip into the first jaw arm as the clip moves from the clip cartridge toward the jaw assembly, and the second guide slot configured to guide at least a portion of the second clip arm of the clip into the second jaw arm as the clip moves from the clip cartridge toward the jaw assembly. the first jaw arm includes a first jaw slot, and the second jaw arm includes a second jaw slot, the first jaw slot configured to receive the at least a portion of the first clip arm, and the second jaw slot configured to receive the at least a portion of the second clip arm; 2. The clip applier of Claim 1, wherein, the second end of the first guide slot in communication with the first jaw slot of the first jaw arm, and the second end of the second guide slot in communication with the second jaw slot of the second jaw arm. the first jaw arm is connected to a first guide plate, the first guide plate configured to constrain and guide the at least a portion of the first clip arm in conjunction with the first jaw slot; 3. The clip applier of Claim wherein, the second jaw arm is connected to a second guide plate, the second guide plate configured to constrain and guide the at least a portion of the second clip arm in conjunction with the second jaw slot. the first guide plate includes a first sub-guide plate and a second sub-guide plate, the first sub-guide plate and the second sub-guide plate spaced apart and located on two slot walls of the first jaw slot, respectively; 4. The clip applier of Claim 3, wherein, and / or, the second guide plate includes a third sub-guide plate and a fourth sub-guide plate, the third sub-guide plate and the fourth sub-guide plate spaced apart and located on two slot walls of the second jaw slot, respectively. the first clip arm includes a first protrusion, and the second clip arm includes a second protrusion; the first guide slot configured to guide the first protrusion to enter the first jaw arm as the clip moves from the clip cartridge toward the jaw assembly, and the second guide slot configured to guide the second protrusion to enter the second jaw arm as the clip moves from the clip cartridge toward the jaw assembly.

5. The clip applier of any one of Claims 1-4, wherein, ​ 6. The clip applier of any one of Claims 1-5, wherein, One end of the first clamping arm is hinged to one end of the second clamping arm to form a hinge part, at least one of the first and second ejection plates comprises a third guide slot, a first end of the third guide slot is in communication with the clip storage, and a second end of the third guide slot is located between the first and second clamping arms; The third guide slot is located between the first and second guide slots and is configured to guide the hinge part to enter between the first and second clamping arms when the clip moves from the clip storage to the jaw assembly.

7. The clip applier of Claim, wherein, The hinge part comprises a third protruding part, and the third guide slot is configured to guide the third protruding part.

8. The clip applier of Claim, wherein, The second end of the third guide slot extends beyond the second ends of the first and second guide slots.

9. The clip applier of any one of Claims 1-8, wherein, The jaw assembly is configured to be in a closed state when the clip moves from the clip storage to the clip ejection mechanism; In response to the clip entering the jaw assembly, the clip causes the jaw assembly to switch from the closed state to an open state.

10. The clip applier of Claim, wherein, The clip applier further comprises a main body and a pre-push assembly, the pre-push assembly comprises a pre-push member, the pre-push member is movably connected to the main body, and the pre-push member has a first position and a second position located distally to the first position; The jaw assembly comprises a clip feeding mechanism and a clip applying mechanism; The jaw assembly further comprises a closing elastic member, the closing elastic member is connected to the two clamping arms, and the closing elastic member is configured to provide a force for the two clamping arms to move towards each other; The clip applier has an initial state and a clip feeding state; In the initial state, the clip applying mechanism abuts against the first and second clamping arms to cause the jaw assembly to be in the open state, and the closing elastic member stores energy; In the clip feeding state, in response to the pre-push member being driven, the pre-push member pushes the clip applying mechanism, and the pre-push member moves from the first position to the second position, causing the clip applying mechanism to move distally, so that the clip applying mechanism is no longer in abutment with the first and second clamping arms, the closing elastic member releases energy to cause the first and second clamping arms to move towards each other, so that the jaw assembly enters a closed state; in response to the clip feeding mechanism moving distally along the axial direction of the jaw assembly, the pre-push member remains in the second position, the clip feeding mechanism drives the clip to enter the jaw assembly, and the clip causes the jaw assembly to switch from the closed state to the open state.

11. The clip applier of Claim 10, wherein, The clip applying mechanism has a first limiting part, and the first and second clamping arms each have a second limiting part; In the initial state, the first limiting part is located on a rotation path of the second limiting part when the jaw assembly switches from the open state to the closed state, the first limiting part abuts against the second limiting part, and the jaw assembly remains in the open state; In the clip feeding state, in response to the clip applying mechanism being pushed by the pre-push piece, the clip applying mechanism moves distally, so that the first limiting part is out of the second limiting part and moves to outside of the rotation path of the jaw assembly from the self-opening state to the closed state, so that the closing elastic piece releases energy to make the first jaw arm and the second jaw arm close to each other until the jaw assembly switches to the closed state.

12. The clip applier of Claim 10, wherein, The pre-push assembly further comprises a driving piece movably connected to the main body. In the clip feeding state, in response to the driving piece being driven to move relative to the main body, the driving piece pushes the pre-push piece so that the pre-push piece moves from the first position to the second position, thereby making the clip applying mechanism move distally.

13. The clip applier of any one of Claims 1-12, wherein, The clip feeding mechanism further comprises a deceleration structure located at a contact area of the first clip feeding plate and / or the second clip feeding plate for contacting the clip, and the deceleration structure is configured to contact the clip and apply resistance to the moving clip to reduce the speed of the clip.

14. The clip applier of Claim 13, wherein, The deceleration structure is protruded or recessed relative to the contact area, and the deceleration structure is configured to hinder the movement of the clip to apply resistance to the moving clip, thereby reducing the speed of the clip. Or, The deceleration structure has a larger friction coefficient than the rest of the contact area, and the deceleration structure is configured to increase the friction force on the clip to apply resistance to the moving clip, thereby reducing the speed of the clip.

15. The clip applier of any one of Claims 1-14, wherein, The clip storage comprises a storage part configured to store the clip and a clip feeding part connected to the clip feeding mechanism, The clip feeding part comprises a first clip storage guide slot and a second clip storage guide slot, a first end of the first guide slot is in communication with the first clip storage guide slot, and a first end of the second guide slot is in communication with the second clip storage guide slot, At least part of the first clip arm of the clip is configured to move from the first clip storage guide slot to the first jaw arm through the first guide slot, and at least part of the second clip arm of the clip is configured to move from the second clip storage guide slot to the second jaw arm through the second guide slot.

16. The clip applier of any one of Claims 1-15, wherein, The first end of the first guide slot is provided with an inclined first guide surface configured to guide at least part of the first clip arm into the first guide slot, and / or the first end of the second guide slot is provided with an inclined second guide surface configured to guide at least part of the second clip arm into the second guide slot.

17. The clip applier of any one of Claims 1-16, wherein, The clip applying forceps further comprise a main body, and the jaw assembly is connected to the main body, and the jaw assembly further comprises a clip feeding mechanism configured to move relative to the main body to push the clip, thereby driving the clip to move distally from the clip storage to the jaw assembly.

18. A clip applying forceps, comprising: a jaw assembly comprising a first jaw arm and a second jaw arm; The jaw assembly is configured to mount a clip cartridge, the clip cartridge is configured to store a clip, the clip comprises a first clip arm and a second clip arm, one end of the first clip arm is hinged to one end of the second clip arm and forms a hinge, The jaw assembly comprises a clip ejection mechanism between the clip cartridge and the jaw assembly; the clip ejection mechanism comprises a first clip ejection plate and a second clip ejection plate arranged at intervals, a clip ejection channel is defined between the first clip ejection plate and the second clip ejection plate, the clip ejection channel is communicated with the clip cartridge and the jaw assembly, and the clip is configured to enter the jaw assembly from the clip cartridge through the clip ejection channel. The clip ejection channel comprises a first guide channel, a second guide channel and a third guide channel, the first guide channel is configured to guide at least part of the first clip arm of the clip to enter the first jaw arm when the clip moves from the clip cartridge to the jaw assembly, the second guide channel is configured to guide at least part of the second clip arm of the clip to enter the second jaw arm when the clip moves from the clip cartridge to the jaw assembly, and the third guide channel is located between the first guide channel and the second guide channel, and the third guide channel is configured to guide the hinge of the clip to enter between the first jaw arm and the second jaw arm when the clip moves from the clip cartridge to the jaw assembly.

19. The clip applier of Claim 18, wherein, The first jaw arm comprises a first jaw slot, and the second jaw arm comprises a second jaw slot, the first jaw slot is configured to accommodate at least part of the first clip arm, and the second jaw slot is configured to accommodate at least part of the second clip arm, The first end of the first guide channel is communicated with the clip cartridge, and the second end of the first guide channel is communicated with the first jaw slot of the first jaw arm, The first end of the second guide channel is communicated with the clip cartridge, and the second end of the second guide channel is communicated with the second jaw slot of the second jaw arm.

20. The clip applier of Claim 18, wherein, The first guide channel is defined by a first guide groove arranged on at least one of the first clip ejection plate and the second clip ejection plate, the second guide channel is defined by a second guide groove arranged on at least one of the first clip ejection plate and the second clip ejection plate, and the third guide channel is defined by a third guide groove arranged on at least one of the first clip ejection plate and the second clip ejection plate.

21. The clip applier of Claim 18, wherein, The clip applier further comprises a main body and a pre-push assembly, the pre-push assembly comprises a pre-push piece, the pre-push piece is movably connected to the main body, and the pre-push piece has a first position and a second position located distally to the first position; The jaw assembly comprises a clip feeding mechanism and a clip applying mechanism; The jaw assembly further comprises a closing elastic piece, the closing elastic piece is connected to the two jaw arms, and the closing elastic piece is configured to provide a force for the two jaw arms to move close to each other; The clip applier has an initial state and a clip feeding state; In the initial state, the clip applying mechanism abuts against the first jaw arm and the second jaw arm so that the jaw assembly is in the open state, and the closing elastic piece stores energy. In the clip feeding state, in response to the pre-push member being driven, the pre-push member pushes against the clip applying mechanism and the pre-push member moves from the first position to the second position, so that the clip applying mechanism moves distally, thereby causing the first jaw arm and the second jaw arm to disengage from the abutment with the first jaw arm and the second jaw arm, the closing elastic member releases energy to cause the first jaw arm and the second jaw arm to move towards each other, thereby causing the jaw assembly to enter the closed state; in response to the clip feeding mechanism moving distally along the shaft of the handle assembly, the pre-push member remains in the second position, the clip feeding mechanism drives the clip into the jaw assembly, and the clip causes the jaw assembly to enter the open state from the closed state.

22. The clip applier of Claim 21, wherein, The clip applying mechanism has a first limiting portion, and the first jaw arm and the second jaw arm each have a second limiting portion; In the initial state, the first limiting portion is located on the rotation path of the second limiting portion when the jaw assembly switches from the open state to the closed state, and the first limiting portion abuts against the second limiting portion, so that the jaw assembly remains in the open state; In the clip feeding state, in response to the clip applying mechanism being pushed by the pre-push member, the clip applying mechanism moves distally, so that the first limiting portion moves away from the second limiting portion and moves to a position outside the rotation path of the second limiting portion when the jaw assembly switches from the open state to the closed state, so that the closing elastic member releases energy to cause the first jaw arm and the second jaw arm to move towards each other until the jaw assembly switches to the closed state.

23. The clip applier of Claim 21, wherein: The pre-push assembly further comprises a driving member movably connected to the main body; In the clip feeding state, in response to the driving member being driven to move relative to the main body, the driving member pushes against the pre-push member, so that the pre-push member moves from the first position to the second position, thereby causing the clip applying mechanism to move distally.

24. The clip applier of any one of Claims 18-23, wherein, The clip applying forceps further comprise a main body, and the handle assembly is connected to the main body, and the handle assembly further comprises a clip feeding mechanism configured to move relative to the main body to push against the clip, thereby driving the clip to move distally from the clip storage to the jaw assembly.

Images