CN116407207A - Clip applier - Google Patents

Abstract

The invention discloses a clip applier, which comprises: a shaft assembly defining a first longitudinal axis; the clamping bin assembly is arranged on the rod body assembly to store the clamps, the clamping bin assembly comprises at least two clamps, the clamps in the clamping bin are stacked, and a clamp outlet is formed in the distal end of the clamping bin assembly; a jaw assembly defining a third longitudinal axis, the jaw assembly disposed at a distal end of the shaft assembly, wherein the clip outlet is in communication with the jaw assembly, a clip is capable of entering the jaw assembly through the clip outlet, and the second longitudinal axis of the cartridge assembly is parallel to but not collinear with the third longitudinal axis of the jaw assembly in the stacking direction. The clamp applier solves the problems that the clamp applier can realize continuous hair clamp application through the clamp bin and the clamps in the clamp bin are always stable.

Description

Clip applier

Technical Field

The invention relates to the technical field of medical appliances, in particular to a clip applier.

Background

In the prior art, the reusable clip applier can only clip one clip at a time, after clip applier, the clip applier needs to be taken out from the body, another clip is arranged in the jaw assembly, and the clip applier can be reinserted into the body for clip applier. Thus, during the surgical procedure, the surgeon needs to take the instrument out of the body multiple times, increasing the surgical time and risk.

In order to solve the problem that instruments are taken out of the body for many times in operation, in the prior art, a plurality of clips are arranged in a shaft assembly of a clip applier and are sequentially pushed into a jaw assembly when in use, so that the clip applier is not required to be taken out for many times in operation, the cost and the operation risk are reduced to a certain extent, but the clip applier structure formed by arranging the clips in the shaft assembly is not compact, the clip applier is a disposable product, and after the clips in the shaft are used, the clip applier cannot be reused, and the cost is still higher.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide the clip applier, which solves the technical problems that the clip applier realizes continuous firing by sequentially firing the clips in the clip bin and the clips in the clip bin are always stable.

The invention is realized by the following technical scheme: a clip applier comprising: a shaft assembly defining a first longitudinal axis; the clamping bin assembly is limited to a second longitudinal axis, is arranged on the rod body assembly and comprises at least two clamps, the clamps are stacked along a first direction, and a clamp outlet is formed in the distal end of the clamping bin assembly; a jaw assembly defining a third longitudinal axis, the jaw assembly disposed at a distal end of the shaft assembly, wherein a last clip in the first direction is driven through the clip outlet into the jaw assembly, and a second longitudinal axis of the cartridge assembly is parallel and non-collinear with the third longitudinal axis of the jaw assembly in the first direction.

Further, the clips include clip arms having ears, the ears of adjacent clips not overlapping in the first direction.

Further, the clamping bin assembly is provided with a clamping cavity for accommodating the clamp, the clamping cavity comprises a first cavity and a second cavity, the first cavity and the second cavity are sequentially arranged along a first direction, the first cavity is communicated with the second cavity, and the second cavity is communicated with the clamp outlet.

Further, the first cavity has a limiting ramp therein, the clip includes a proximal end and a distal end, the ear is proximal to the distal end and distal to the proximal end, the limiting ramp is in abutment with the proximal end of the clip in the first cavity.

Further, the second cavity defines a fourth longitudinal axis, the second cavity having a groove therein extending along the fourth longitudinal axis, and the ears of the clip in the second cavity being received in the groove.

Further, the fourth longitudinal axis of the second cavity and the second longitudinal axis of the cartridge assembly are parallel but not collinear.

Further, the cartridge assembly further includes a biasing mechanism that abuts the first clip in a forward direction in the first direction to urge the clip in the first cavity into the second cavity.

Further, a third longitudinal axis of the jaw assembly passes through a transverse cross-section of the second cavity.

Further, the clip applier further comprises: and a clip feeding assembly that moves to push a clip of the cartridge assembly against the jaw assembly in response to a force applied to the clip feeding assembly.

Further, the clip feeding assembly comprises a clip feeding rod which pushes the clip in the second cavity to the jaw assembly through the clip outlet.

Further, the clip feed bar defines a fifth longitudinal axis that is parallel to but not collinear with the second longitudinal axis of the cartridge assembly in the first direction.

Further, a pushing clamp opening is formed in the proximal end of the clamp bin assembly, the pushing clamp opening is communicated with the second cavity, and the clamp feeding rod can enter the second cavity through the pushing clamp opening to push the clamp in the second cavity to the clamp jaw assembly.

Further, the shaft assembly includes: the sleeve is sleeved on the clamping bin assembly, the distal end of the sleeve is matched with the jaw assembly, and the sleeve moves to the distal end or the proximal end to enable the jaw assembly to be closed or opened in response to the force applied to the sleeve.

Further, the shaft assembly further includes a base, and the cartridge assembly is detachably mounted to the base.

Further, the sleeve includes an opening through which the cartridge assembly is mounted to the base.

Further, the projection of the cartridge assembly onto the sleeve cross-section is located within the edge of the sleeve along the first longitudinal axis of the shaft assembly.

Compared with the prior art, the invention has the beneficial effects that: the clamp stack setting in the clamp bin assembly in this application, with the relative clamp bin assembly biasing setting of clamp bin assembly, namely, along the direction that the clamp stacks, the longitudinal axis of clamp bin assembly is parallel but not collinearly with the longitudinal axis of clamp bin assembly, follow the last clip of stacking direction in the clamp bin assembly like this and directly remove to in the clamp bin assembly after coming out from the play clamp mouth, this kind of overall arrangement mode can follow clamp bin assembly and provide a plurality of clips to the clamp bin assembly, need not to take out clamp appliers repeatedly, realize clamp appliers's continuous send function, the operation time has been practiced thrift, make whole structural layout compacter simultaneously.

Drawings

FIG. 1 is an overall schematic of a clip applier provided in accordance with an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of the portion A shown in FIG. 1;

FIG. 3 is an enlarged partial view of another angle at A shown in FIG. 1;

FIG. 4 is a schematic view of a cartridge assembly provided in accordance with an embodiment of the present invention;

FIG. 5 is a cross-sectional view of the cartridge assembly of FIG. 4 without clips;

FIG. 6 is a cross-sectional view of the cartridge assembly of FIG. 4 with a clip attached;

FIG. 7 is a schematic view of a clip of the cartridge assembly of FIG. 4;

FIG. 8 is a schematic view of a biasing mechanism of the cartridge assembly of FIG. 4;

FIG. 9 is a schematic view of a clip applier provided in an embodiment of the invention in an initial state;

FIG. 10 is a schematic view of a clip applier clip feeding assembly for pushing a clip to a jaw assembly, in accordance with an embodiment of the present invention;

FIG. 11 is a schematic view of the clip applier shown in FIG. 10 from another angle after removal of the cannula;

FIG. 12 is a schematic view of the base of the clip applier shown in FIG. 11;

fig. 13 is a schematic view of the clip applier shown in fig. 11 fitted with a cannula.

10. A shaft assembly; 101. a base; 1011. a channel; 1012. a first connection portion; 1013. a second connecting portion; 102. a sleeve; 1022. an opening; 20. a cartridge assembly; 21. a clip outlet; 22. pushing the clamping opening; 23. a first cavity; 24. a second cavity; 26. limiting inclined planes; 27. a first groove; 28. a second groove; 30. a clip; 301. a first clamp arm; 302. a second clamp arm; 303. a first ear; 304. a second ear; 305. an engagement portion; 306. a connection part; 40. a jaw assembly; 401. a first jawarm; 402. a second jawarm; 403. an elastic element; 50. a clamping rod; 70. a biasing mechanism; 71. an elastic member; 710. a first torsion arm; 712. the second torsion arm; 713. a spiral body; 72. a push plate; 80. and operating the assembly.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be understood that the terms "proximal" and "distal" are used herein with respect to a clinician manipulating the handle of the clip applier. The term "proximal" refers to the portion proximal to the clinician, and the term "distal" refers to the portion distal to the clinician. I.e., the handles are proximal and the jaw assembly is distal, e.g., the proximal end of a component represents an end relatively close to the handles and the distal end represents an end relatively close to the jaw assembly. The terms "upper" and "lower" refer to the locations shown in the drawings.

In the present invention, unless explicitly specified and limited otherwise, the terms "connected," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, movably connected, or integrated, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two elements or interaction relationship between the two elements such as abutting. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances. It should be noted that, when the terms "connected" and "connected" are used in the meanings defined by the corresponding terms, only the cases where the terms are clearly required are excluded, and other possible cases are not excluded, such as "detachably connected" means detachably connected, not including being integrated, but movable connection and the like are not excluded.

As shown in fig. 1-3, the clip applier presented by the present invention includes a shaft assembly 10, a cartridge assembly 20, and a jaw assembly 40, the shaft assembly 10 defining a first longitudinal axis X1, the cartridge assembly 20 defining a second longitudinal axis X2, the jaw assembly 40 defining a third longitudinal axis X3; the longitudinal axes referred to herein are all central axes in the longitudinal direction. The cartridge assembly 20 is disposed on the shaft assembly 10 to store the clips 30, the cartridge assembly 20 includes at least two clips 30, and the clips 30 are stacked in the cartridge assembly 20 along a first direction S1, as shown in fig. 6, the first direction S1 is perpendicular to a second longitudinal axis X2 of the cartridge assembly 20, and a distal end of the cartridge assembly 20 is provided with a clip outlet 21; the jaw assembly 40 is disposed at the distal end of the shaft assembly 10, wherein the clip outlet 21 is in communication with the jaw assembly 40, and the clip 30 is capable of entering the jaw assembly 40 through the clip outlet 21, wherein the third longitudinal axis X3 of the jaw assembly 40 is non-collinear with the second longitudinal axis X2 of the cartridge assembly 20. Through the above-mentioned position layout of the shaft assembly 10, the cartridge assembly 20 and the jaw assembly 40, it is known that the third longitudinal axis X3 of the jaw assembly 40 is not collinear with the second longitudinal axis X2 of the cartridge assembly 20, i.e. along the first direction S1, the third longitudinal axis X3 of the jaw assembly 40 is offset relative to the second longitudinal axis X2 of the cartridge assembly 20, so as to ensure that the last clip 30 in the cartridge assembly 20 always enters the jaw assembly 40 along the first direction S1, not only can the smooth clip application be ensured, but also the clip application can be ensured to realize the continuous hair function, and to ensure that as many clips 30 as possible are accommodated in the cartridge assembly 20 to a certain extent, thereby enhancing the practicability of the continuous hair clip application.

The clip applier of the invention also includes a clip feed assembly that moves to push the clips 30 of the cartridge assembly 20 against the jaw assembly 40 via the clip outlet 21 in response to a force applied to the clip feed assembly. The clip applier of this embodiment further includes an operating assembly 80, the operating assembly 80 being coupled to the proximal end of the shaft assembly 10 to drive movement of the shaft assembly 10 and the clip feeding assembly.

As shown in fig. 4 to 7, the clip cavity in the cartridge assembly 20 can accommodate a plurality of clips 30, and the plurality of clips 30 are arranged in a first direction S1, as shown in fig. 6, that is, in a direction perpendicular to the second longitudinal axis X2, and in another embodiment, the first direction S1 may be disposed at a predetermined included angle with respect to the second longitudinal axis X2, and the predetermined included angle is an acute angle.

Referring to the placement direction and angle of the cartridge assembly 20 in fig. 6, the cartridge assembly 20 is placed in the horizontal direction in fig. 6, the first direction S1 is the up-down direction (i.e., the vertical direction), and the first direction is from top to bottom. The second longitudinal axis X2 of the cartridge assembly 20 is oriented in a left-right direction, i.e., a horizontal direction.

The number of clips 30 of the cartridge assembly 20 is adjustable, the number of clips 30 does not affect the normal use of the clip applier, and in practice the number of clips 30 can be adjusted according to the use requirements. During the surgical procedure, three clips 30 are typically applied to the subject at one time in a continuous clip application process, and thus the clip cartridge in this embodiment includes three clips 30.

Referring to fig. 5 and 6, the clip cavity includes a first cavity 23 and a second cavity 24, the first cavity 23 being in communication with the second cavity 24. The first cavity 23 is disposed above the second cavity 24, i.e. the first cavity 23 and the second cavity 24 are disposed sequentially along the first direction S1. The proximal end of the second cavity 24 intersects the proximal end face of the cartridge assembly 20 to form a push grip 22 of the second cavity 24, the distal end of the second cavity 24 intersects the distal end face of the cartridge assembly 20 to form a discharge grip 21 of the second cavity 24, and the second cavity 24 communicates with both the push grip 22 and the discharge grip 21. The three clips 30 of the cartridge assembly 20 are arranged sequentially from top to bottom, i.e., along the first direction S1. Wherein the first cavity 23 has two clips 30 therein and the second cavity 24 has one clip 30 therein.

As shown in fig. 6 and 7, the clip 30 includes a clip arm having an ear. The clips 30 are stacked offset in the first direction S1 such that the ears of adjacent clips 30 do not overlap in the first direction S1. Through misplacement of the clip 30, adjacent ears can avoid each other, so that the clip 30 can be stably stacked in the clip cavity without toppling over, and meanwhile, the stacking space is reduced.

Specifically, as shown in fig. 7, the clip 30 includes two clip arms and a connecting portion 306 between the two clip arms. Two clamp arms, a first clamp arm 301 and a second clamp arm 302. The first clamp arm 301 and the second clamp arm 302 are relatively pivotable about a connection 306 to effect opening and closing of the clip 30. The first clamp arm 301 has opposite upper and lower sidewalls along the first direction S1, the upper sidewall of the first clamp arm 301 having a first ear 303 and the lower sidewall of the first clamp arm 301 also having a first ear 303. The second clamp arm 302 has opposite upper and lower sidewalls along the first direction S1, the upper sidewall of the second clamp arm 302 having a second ear 304, the lower sidewall of the second clamp arm 302 also having a second ear 304. The clip 30 has opposite proximal and distal ends along a second longitudinal axis X2 of the cartridge assembly 20, the proximal and distal ends being a region rather than an endpoint. Each first ear 303 and each second ear 304 of the clip 30 are proximate to the distal end of the clip 30 and distal to the proximal end of the clip 30, and the connection 306 is proximate to the proximal end of the clip 30 and distal to the distal end of the clip 30.

The end of the second clamping arm 302 away from the connecting portion 306 has a clamping portion 305, the clamping portion 305 is a hook portion with a tip, and when the jaw assembly 40 is closed, the clamp 30 in the jaw assembly 40 is driven to change from an open state to a closed state. When the clip 30 is in the closed state, the engagement portion 305 of the second clip arm 302 can be engaged between the two first ears 303 of the first clip arm 301, so that the first clip arm 301 and the second clip arm 302 are sufficiently clamped, and a blood vessel or tissue placed between the first clip arm 301 and the second clip arm 302 can be effectively clamped and stopped. The clips 30 are stacked within the cartridge assembly 20 in the following manner:

for example, the first ear 303 and the second ear 304 of the lower side wall of one clip 30 are each abutted against the upper side wall of the other clip 30, and more specifically, the first ear 303 of the lower side wall of the first arm 301 of one clip 30 is abutted against the upper side wall of the first arm 301 of the other clip 30, and the second ear 304 of the lower side wall of the second arm 302 is abutted against the upper side wall of the second arm 302 of the other clip 30.

The first and second ears 303, 304 of the clip 30 are offset from the first and second ears 303, 304 of the other clip 30, and the lower the ears of the clip 30 are closer to the jaw assembly 40 in the clip stacking direction, i.e., in the first direction S1. Thus, as the clip 30 in the second cavity 24 moves toward the jaw assembly 40, the first and second ears 303, 304 of the clip 30 in the first cavity 23 do not interfere with the movement of the clip in the second cavity 24.

A limiting slope 26 is provided in the first cavity 23, and the limiting slope 26 abuts against a proximal end of the clip 30 in the first cavity 23. Thereby, the clip 30 in the first cavity 23 can be supported by the stopper slope 26. That is, the distal end of clip 30 is supported on the adjacent clip side wall by a second ear 304 on its side wall, and the proximal end of clip 30 is supported on stop ramp 26. Thus, each clip 30 can be stably clamped within the first cavity 23, and each clip 30 can be disposed generally along the second longitudinal axis X2 of the cartridge assembly 20. The proximal end of the clip 30 within the first cavity 23 does not fall into the second cavity 24, thereby not affecting the normal use of the clip 30.

As shown in fig. 6, the second cavity 24 defines a fourth longitudinal axis X4, the second cavity 24 having a groove extending along the fourth longitudinal axis X4, and the ears of the clip 30 located in the second cavity 24 are received in the groove. Specifically, the second cavity 24 has opposite upper and lower wall portions in the first direction S1, and a third opening is provided at the upper wall portion of the second cavity 24 corresponding to the first cavity 23 so that the clip 30 in the first cavity 23 can enter into the second cavity 24.

The inner wall of the upper wall portion of the second chamber 24 is provided with a first recess 27 and a second recess 28. The inner wall of the lower wall portion of the second chamber 24 is also provided with a first recess 27 and a second recess 28. The first ear 303 of the upper side wall of the clip 30 is operatively positioned in the first recess 27 of the upper wall of the second cavity 24 and the second ear 304 of the upper side wall of the clip 30 is operatively positioned in the second recess 28 of the upper wall of the second cavity 24. The first ear 303 of the lower side wall of the clip 30 is operatively positioned in the first recess 27 of the lower wall of the second cavity 24 and the second ear 304 of the lower side wall of the clip 30 is operatively positioned in the second recess 28 of the lower wall of the second cavity 24. Thereby, the clip 30 in the second cavity 24 can be stably disengaged from the second cavity 24 from the clip outlet 21.

As shown in fig. 6 and 8, a biasing mechanism 70 is further disposed in the cartridge assembly 20, and specifically, the biasing mechanism 70 is disposed in the first cavity 23. The biasing mechanism 70 applies a force to the clip 30 generally in the stacking direction of the clip 30, i.e., the first direction S1, such that the clip 30 within the first cavity 23 can enter the second cavity 24. In an initial state, the clips 30 are accommodated in the first cavity 23 and the second cavity 24, in use, an operator pushes the clips 30 in the second cavity 24 to the jaw assembly 40 through the clip feeding assembly, then retracts the clips, at this time, the biasing mechanism 70 pushes one clip 30 in the first cavity 23 into the second cavity 24, and then the operator pushes the clip feeding assembly to repeat the above operation to push the clips 30 into the jaw assembly 40. Since the jaw assembly 40 is in communication with the outlet opening 21, the projections of at least a portion of the jaw assembly 40 and the outlet opening 21 in a direction along the third longitudinal axis X3 of the jaw assembly 40 are coincident such that the clip 30 channel of the jaw assembly 40 is in communication with at least a portion of the outlet opening 21 in that direction.

As shown in fig. 8, the biasing mechanism 70 includes a resilient member 71 and a push plate 72. The push plate 72 abuts against the upper side wall of the clip 30 within the first cavity 23, and more particularly the biasing mechanism 70 abuts against the first clip 30 forward in the first direction S1, and the push plate 72 may be rigid or at least substantially rigid. Under the action of the elastic member 71, the push plate 72 can apply a force to the clip 30 that moves toward the second cavity 24, i.e., the push plate 72 can apply a force to the clip 30 Shi Jiayan in the first direction S1, thereby pushing one clip 30 in the first cavity 23 into the second cavity 24. In this embodiment, the elastic member 71 is a torsion spring. Specifically, the elastic member 71 includes a first torsion arm 710, a second torsion arm 712, and a spiral body 713. The first torsion arm 710, the second torsion arm 712, and the screw body 713 are integral.

In the absence of external forces, the first torsion arm 710 and the second torsion arm 712 of the elastic member 71 are both in a naturally stretched state. The first torsion arm 710 is disposed in the clip cavity, and the second torsion arm 712 is disposed on the upper side of the clip 30 and connected to the push plate 72 after being twisted by a certain angle, such that the torsion spring is deformed, and thus, the second torsion arm 712 can apply a force to the clip 30 through the push plate 72.

The clip applier of the present invention has the plurality of clips 30 within the cartridge assembly 20 disposed along the first direction S1, i.e., perpendicular to the second longitudinal axis X2 or at an angle to the second longitudinal axis X2, and the outlet opening 21 is positioned on the underside of the cartridge assembly 20 along the first direction S1, so that the jaw assembly 40 needs to be offset relative to the cartridge assembly 20 in order to communicate with the outlet opening 21.

In particular, as shown in fig. 9-11, the cartridge assembly 20 defines a second longitudinal axis X2 and the second cavity 24 defines a fourth longitudinal axis X4, the second cavity 24 is positioned at a lower location of the entire cartridge assembly 20, the clips 30 within the second cavity 24 are pushed to the jaw assembly 40 via the outlet 21, at which time the clips 30 within the second cavity 24 should be the last clip in the clip stacking direction, i.e., the first direction S1, so that the clips in the cartridge assembly 20 are sequentially pushed toward the second cavity 24 by the biasing mechanism 70 to smoothly apply the clips.

It is also possible that only one clip 30 is disposed within the cartridge assembly 20 (where the first and second clip cavities are identical) and where the second longitudinal axis X2 of the cartridge assembly 20 is substantially coincident with the third longitudinal axis X3 of the jaw assembly 40, the jaw assembly 40 is not offset relative to the cartridge assembly 20, but the clip application function is not achieved with only one clip 30.

Thus, to ensure proper use of the hair ligating function, the cartridge assembly 20 must be provided with more than two clips 30, and the clip 30 in the second cavity 24 must be the last clip in the clip stacking direction, i.e., the first direction S1. Thus, as shown in fig. 9, in the first direction S1, the third longitudinal axis X3 of the jaw assembly 40 is parallel to but not collinear with the second longitudinal axis X2 of the cartridge assembly 20, i.e., the jaw assembly 40 is disposed offset relative to the cartridge assembly 20. Further, as shown in fig. 6, the fourth longitudinal axis X4 of the second cavity 24 is also parallel to but not collinear with the second longitudinal axis X2 of the cartridge assembly 20. Further, as shown in fig. 9, since the clip 30 in the second cavity 24 is pushed to the jaw assembly 40, the third longitudinal axis X3 of the jaw assembly 40 passes through the second cavity 24, preferably, in the first direction S1, the third longitudinal axis X3 of the jaw assembly 40 coincides with the fourth longitudinal axis X4 of the second cavity 24,

as shown in fig. 9 and 10, the clip applier further includes: the clip feeding assembly moves to push the clips 30 within the cartridge assembly 20 against the jaw assembly 40 in response to a force applied thereto. The pinch clamp assembly includes a pinch clamp bar 50, the pinch clamp bar 50 defining a fifth longitudinal axis X5, which is a longitudinal central axis of the pinch clamp bar 50.

The clip feed bar 50 can be pushed into the second cavity 24 through the push nip 22 and push the clips 30 in the second cavity 24, push the clips 30 in the second cavity 24 from the clip outlet 21 into the jaw assembly 40, and then withdraw the clip feed bar 50, at which point the biasing mechanism 70 of the cartridge assembly 20 moves one clip 30 in the first cavity 23 into the second cavity 24 again, waiting for the clip feed bar 50 to be pushed again. The fifth longitudinal axis X5 of the clamping bar 50 passes through the second cavity 24, preferably, in the first direction S1, the fifth longitudinal axis X5 of the clamping bar 50 substantially coincides with the fourth longitudinal axis X4 of the second cavity 24; the clamping bar 50 is configured to feed the clip 30 into the jaw assembly 40, preferably, in the first direction S1, the fifth longitudinal axis X5 of the clamping bar 50 is substantially coincident with the third longitudinal axis X3 of the jaw assembly 40.

The clip applier of this embodiment includes an operating assembly 80, a shaft assembly 10 extending from operating assembly 80, and a jaw assembly 40.

As shown in fig. 11 to 13, the shaft assembly 10 includes a base 101 and a sleeve 102. The base 101 has a strong rigidity. The jaw assembly 40 includes a first jaw arm 401 and a second jaw arm 402 pivotally connected to the base 101.

The cartridge assembly 20 body is provided with a buckle (not shown), the base 101 is provided with corresponding first connection portion 1012 and second connection portion 1013, and the buckle of the cartridge assembly 20 is clamped with the first connection portion 1012 and the second connection portion 1013 of the base 101, so that the cartridge assembly 20 is detachably mounted on the base 101. Referring to fig. 12, the base 101 is provided with a channel 1011, the channel 1011 being located between the jaw assembly 40 and the cartridge assembly 20. The distal end of the channel 1011 opens between the first jawarm 401 and the second jawarm 402, and the proximal end of the channel 1011 communicates with the outlet 21 of the second cavity 24 of the cartridge assembly 20, such that the clip 30 in the second cavity 24 can enter between the first jawarm 401 and the second jawarm 402 via the channel 1011 and is supported between the first jawarm 401 and the second jawarm 402. A guide slot (not shown) is provided in base 101 for receiving clip feed bar 50, the proximal end of clip feed bar 50 being drivingly connected to operating assembly 80, operating assembly 80 being capable of driving clip feed bar 50 to move distally or proximally of the clip applier, clip feed bar 50 being flexible. The proximal end of sleeve 102 is drivingly connected to operating assembly 80, and operating assembly 80 is capable of driving sleeve 102 toward the distal or proximal end of the clip applier. The distal end of the sleeve 102 is capable of mating with the jaw assembly 40, and in particular, a resilient member 403 is disposed between the first and second jawarms 401, 402, and when the sleeve 102 is moved distally, the jaw assembly 40 is received within the sleeve 102 from the distal end of the sleeve 102, whereupon the resilient member 403 is compressed and the jaw assembly 40 is closed. As sleeve 102 is moved proximally, jaw assembly 40 can extend from the distal end of sleeve 102 and resilient member 403 can release energy to open jaw assembly 40. The elastic member 403 may be a spring.

As shown in fig. 13, sleeve 102 includes an opening 1022 and cartridge assembly 20 can be placed within sleeve 102 from opening 1022 and coupled to base 101. In order to ensure smooth distal or proximal movement of sleeve 102, cartridge assembly 20 should be positioned inside sleeve 102 so as not to impede movement of sleeve 102. Specifically, the projection of the cartridge assembly 20 onto the shaft assembly 10 along the first longitudinal axis X1 of the shaft assembly is located within the edges of the cross-section of the shaft assembly 10, i.e., the projection of the cartridge assembly 20 onto the cross-section of the sleeve 102 along the first longitudinal axis X1 of the shaft assembly 10 is located inboard of the edges of the sleeve 102. This arrangement also facilitates passage of the shaft assembly through the penetrator and prevents the cartridge assembly 20 from seizing the edges of the penetrator passage.

Preferably, cartridge assembly 20 is positioned inside sleeve 102 and adjacent to the inside of sleeve 102, and sleeve 102 is slidable along the outer surface of cartridge assembly 20 as it moves proximally or distally so that the volume of the cartridge assembly is maximized as much as possible to accommodate as many clips 30 as possible. Thus, in the stacking direction of the clips 30, i.e., the first direction S1, the first longitudinal axis X1 of the shaft assembly 10 and the second longitudinal axis X2 of the cartridge assembly 20 generally coincide, and because the third longitudinal axis X3 of the jaw assembly 40 and the second longitudinal axis X2 of the cartridge assembly 20 are offset, i.e., non-collinear, the first longitudinal axis X1 of the shaft assembly 10 and the third longitudinal axis X3 of the jaw assembly 40 are parallel and non-collinear in the first direction S1.

The clamping process of the clamp applier in this embodiment is described below.

In the initial state (i.e., when clip feed bar 50 is not fed), the distal end of clip feed bar 50 extends into second cavity 24 or does not extend into second cavity 24, both of which do not interfere with normal clip applier use. If the distal end of clip feed bar 50 does not extend into second cavity 24 in the initial state, the distal end of clip feed bar 50 can extend from push nip 22 into second cavity 24 as clip feed bar 50 moves toward the distal end of the clip applier.

As shown in fig. 9, the distal end of the pinch rod 50 protrudes into the second cavity 24 in an initial state, i.e., the distal end of the pinch rod 50 is disposed in the second cavity 24 in an initial state. As previously described, the cartridge assembly 20 includes three clips 30.

As shown in fig. 9, the operating assembly 80 is manipulated to drive the clip feed bar 50 to move toward the distal end of the clip applier (i.e., forward) such that the distal end of the clip feed bar 50 abuts the end of the clip 30 in the second cavity 24 and pushes the clip 30 into movement such that the clip 30 exits the second cavity 24 from the outlet 21 and enters the jaw assembly 40, at which time the clip feed bar 50 still pushes the clip against the end of the clip 30 to prevent the clip 30 from moving proximally and failing to apply the clip.

After clip 30 is advanced into jaw assembly 40, operating assembly 80 is manipulated, and operating assembly 80 drives sleeve 102 toward the distal end of the clip applier, jaw assembly 40 is closed, and clip 30 in jaw assembly 40 is clamped to the object (tissue or vessel) being clamped.

After the jaw assembly 40 is closed, the operating assembly 80 is manipulated, and the operating assembly 80 drives the sleeve 102 to move proximally (i.e., rearward) of the clip applier, the jaw assembly 40 is opened, and the clip 30 is disengaged from the jaw assembly 40.

After clip 30 is disengaged from jaw assembly 40, clip feed bar 50 is moved proximally toward the clip applier by a resilient member (not shown) such that clip feed bar 50 moves proximally to return. When the clip feed lever 50 is reset, the proximal end of the clip 30 in the first cavity 23 moves along the stop ramp 26 under the influence of the biasing mechanism 70, the clip 30 has both a downward and forward displacement, and the clip 30 in the first cavity 23 moves into the second cavity 24. The clip 30 in the second cavity 24 is again clipped according to the clip clipping process described above for the clip 30. The specific driving manner of the clamping rod and the sleeve is a conventional driving manner known to those skilled in the art, and is not described herein again because it is not the focus of this disclosure.

To sum up, in this embodiment, in order to facilitate the plurality of clips 30 stacked in the cartridge assembly 20 to be smoothly pushed into the jaw assembly 40, the cartridge assembly and the jaw assembly 40 are offset, that is, the second longitudinal axis of the cartridge assembly 20 and the third longitudinal axis of the jaw assembly 40 are parallel but not collinear in the stacking direction of the clips 30, so as to ensure that the last clip in the cartridge assembly 20 along the stacking direction always enters the jaw assembly 40, thereby providing the plurality of clips 30 to the jaw assembly, avoiding repeated removal of the clip applier, realizing the continuous sending function of the clip applier, saving the operation time, and simultaneously enabling as many clips to be placed in the cartridge assembly as possible.

In the invention, the clips 30 are stacked in a staggered manner along the first direction S1, so that the ears of adjacent clips 30 are not overlapped along the first direction S1, and the adjacent ears can avoid each other, so that the clips 30 can be stably stacked in the clip cavity without toppling over, and meanwhile, the stacking space is reduced.

In the invention, the cartridge clamping assembly 20 is arranged in the sleeve 102, the cartridge clamping assembly 20 is close to the inner side of the sleeve 102, the shaft assembly can conveniently pass through the passage of the puncture outfit, the cartridge clamping assembly 20 is prevented from being clamped at the edge of the passage of the puncture outfit, the safety of operation is improved, and the structure is more compact.

The biasing mechanism 70 provided by the invention realizes the function of automatically feeding the clip 30, specifically, after the clip 30 in the second cavity 24 is pushed to the jaw assembly 40, the biasing mechanism 70 can automatically push the clip 30 from the first cavity 23 to the second cavity 24 to supplement the clip 30, so that the clip is automatically pushed, and the practicability of the instrument is improved.

It should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined as appropriate to form other embodiments that will be understood by those skilled in the art.

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

Claims (16)

1. A clip applier characterized by comprising:

a shaft assembly (10) defining a first longitudinal axis;

a cartridge assembly (20), the cartridge assembly (20) defining a second longitudinal axis, the cartridge assembly (20) being disposed in the shaft assembly (10), the cartridge assembly (20) comprising at least two clips (30), and the clips (30) being stacked in a first direction, a distal end of the cartridge assembly (20) being provided with a clip outlet (21);

a jaw assembly (40) defining a third longitudinal axis, the jaw assembly (40) being disposed distally of the shaft assembly (10), wherein a last clip (30) in the first direction is driven through the clip outlet (21) into the jaw assembly (40);

the second longitudinal axis of the cartridge assembly (20) is parallel and non-collinear with the third longitudinal axis of the jaw assembly (40) in the first direction.

2. The clip applier of claim 1, wherein said clips include clip arms having two opposing side walls along said first direction, at least one of said side walls having an ear thereon, said ears of adjacent clips (30) not overlapping along said first direction.

3. Clip applier according to claim 1, characterized in that the cartridge assembly (20) has a clip cavity for accommodating the clip (30), the clip cavity comprising a first cavity (23) and a second cavity (24) arranged in sequence along the first direction, the first cavity (23) being in communication with the second cavity (24), the second cavity (24) being in communication with the clip outlet (21).

4. The clip applier of claim 3, wherein said first cavity (23) has a limiting ramp (26) therein, said clip (30) including a proximal end and a distal end, said clip (30) having an ear proximal to said distal end and distal to said proximal end, said limiting ramp (26) abutting said proximal end of said clip (30) within said first cavity (23).

5. Clip applier according to claim 3, characterized in that the second cavity (24) defines a fourth longitudinal axis, the second cavity (24) having a groove therein extending along the fourth longitudinal axis, the ear of the clip (30) located in the second cavity (24) being received in the groove.

6. The clip applier of claim 3, wherein said second cavity (24) defines a fourth longitudinal axis, said fourth longitudinal axis being parallel to but not collinear with said second longitudinal axis of said cartridge assembly (20); the fourth longitudinal axis is substantially coincident with the third longitudinal axis in the first direction.

7. The clip applier of claim 3, wherein said cartridge assembly (20) further comprises a biasing mechanism (70), said biasing mechanism (70) abutting a first one of said clips (30) in said first direction, pushing said clip (30) within said first cavity (23) into said second cavity (24).

8. The clip applier according to claim 3, wherein a third longitudinal axis of said jaw assembly (40) passes through a transverse cross-section of said second cavity (24).

9. The clip applier of claim 3, further comprising:

-a clip feed assembly that moves to urge the clip (30) of the cartridge assembly (20) against the jaw assembly (40) in response to a force applied to the clip feed assembly.

10. Clip applier according to claim 9, characterized in that the clip feed assembly comprises a clip feed bar (50), the clip feed bar (50) pushing clips in the second cavity (24) via the clip outlet (21) against the jaw assembly (40).

11. The clip applier of claim 10, wherein said clip feed bar (50) defines a fifth longitudinal axis, said fifth longitudinal axis of said clip feed bar (50) being parallel to but non-collinear with said second longitudinal axis of said cartridge assembly (20).

12. The clip applier of claim 10, wherein a push jaw (22) is provided at a proximal end of said cartridge assembly (20), said push jaw (22) being in communication with said second cavity (24), said clip feed bar (50) being capable of entering said second cavity (24) through said push jaw (22) to push said clip (30) within said second cavity (24) against said jaw assembly (40).

13. Clip applier according to claim 1, characterized in that the shaft assembly (10) comprises:

a sleeve (102), a distal end of the sleeve (102) cooperating with the jaw assembly, the sleeve (102) moving distally or proximally to close or open the jaw assembly in response to a force applied to the sleeve (102).

14. The clip applier of claim 13, wherein said shaft assembly (10) further comprises a base (101), said cartridge assembly (20) being removably mounted on said base (101).

15. The clip applier of claim 14, wherein said sleeve (102) includes an opening (1022), said cartridge assembly (20) being mounted to said base (101) through said opening (1022).

16. The clip applier of claim 13, wherein a projection of said cartridge assembly (20) along said first longitudinal axis of said shaft assembly (10) onto a cross-section of said sleeve (102) is located within an edge of said sleeve (102).

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