CN116407206A

CN116407206A - Clip applier

Info

Publication number: CN116407206A
Application number: CN202111670814.2A
Authority: CN
Inventors: 孙宝峰; 程涛; 乔志晨
Original assignee: Fengh Medical Co ltd
Current assignee: Fengh Medical Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2023-07-11

Abstract

The invention discloses a clip applier, which comprises a rod body assembly, an end effector, a clip cartridge, a driving mechanism and an actuating piece. The end effector is pivotally coupled to the shaft assembly such that the end effector rotates relative to the shaft assembly in response to actuation of the drive mechanism. The cartridge has a clip that can be applied to a clamped object by an end effector. The drive mechanism is capable of driving the end effector to rotate relative to the shaft assembly. The actuator has a locked state in which the actuator is capable of a first movement only to switch it to an unlocked state, and an unlocked state in which the actuator is capable of a second movement to drive movement of the drive mechanism to rotate the end effector relative to the shaft assembly. The clamp applier disclosed by the invention can be convenient for a doctor to operate, and can prevent the end effector from rotating to cause injury to a patient due to the fact that the doctor touches the end effector by mistake.

Description

Clip applier

Technical Field

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

Background

In surgery, clamps are often used to close the clip so that a blood vessel or tissue placed between the two arms of the clip can be effectively clamped and hemostatic. Clip appliers typically include an end effector and a shaft assembly. During surgery, it is often necessary to rotate the end effector a predetermined angle relative to the shaft assembly to further adjust the position and angle of the end effector to facilitate the procedure.

For adjustment of the position and angle of the end effector, care should be taken to avoid injury to the patient. Prior art clip appliers, a physician, during surgery, present a risk of rotation of the end effector relative to the shaft assembly due to inadvertent contact with the end effector, which may result in injury to the patient.

In the clip applier in the prior art, after the end effector rotates by a certain angle relative to the shaft assembly, the end effector is difficult to stably maintain at the angle, and at this time, if a doctor bumps the end effector by mistake, the end effector is easy to rotate again, so that the operation is inconvenient and the patient is easy to be injured.

Based on the foregoing, there is a need for improvements over existing clip appliers.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a clip applier, which solves the technical problem that the prior clip applier is difficult to avoid the damage to a patient caused by the rotation of an end effector due to the mistaken touch of the end effector.

The invention is realized by the following technical scheme:

a clip applier comprising:

a shaft assembly;

an end effector pivotally coupled to the shaft assembly such that the end effector rotates relative to the shaft assembly in response to actuation of a drive mechanism;

A cartridge having a clip that can be applied to a gripped object by the end effector;

a drive mechanism that drives rotation of the end effector relative to the shaft assembly;

an actuating member having a locked state in which the actuating member is capable of a first movement only to switch it to an unlocked state in which the actuating member is capable of a second movement to drive movement of the drive mechanism to rotate the end effector relative to the shaft assembly.

Further, in the unlocked state, the actuator also makes a third movement to switch it to the locked state.

Further, the second motion is a rotation that rotates the actuator in response to a force applied to the actuator, causing the end effector to rotate relative to the shaft assembly.

Further, the clip applier may further include a locking member that positions the actuating member in the locked state so that the actuating member can only make the first movement, and that disengages the actuating member in the unlocked state so that the actuating member can make the second movement.

Still further, the actuating member has a tab and the locking member has a plurality of recesses, the tab being operatively retained within one of the recesses in the locked condition and the tab being disengaged from the recess in which it is located in the unlocked condition.

Still further, a plurality of the grooves are provided along the movement locus of the second movement of the actuating member.

Still further, the clip applier further includes a reset member that drives the actuating member to make the third movement so that the actuating member is switched from the unlocked state to the locked state and is maintained in the locked state.

Still further, the restoring member includes an elastic member.

Further, the drive mechanism includes a steering rod assembly including pivotally connected first and second links, and a transmission assembly that moves to move the second link in response to a force applied to the transmission assembly by the actuator, thereby moving the first link to drive the end effector to rotate relative to the shaft assembly.

Still further, the end effector is pivotally coupled to the shaft assembly by a rotating member having one end pivotally coupled to the shaft assembly and the other end pivotally coupled to the end effector.

Still further, the first link acts on the rotating member.

Still further, the rotor is coupled to the shaft assembly via a first pivot point, the first link is coupled to the rotor via a second pivot point, and the first pivot point is not coincident with the second pivot point.

Further, the clip is delivered from the clip cartridge to the end effector in response to a force applied to the clip, such that the end effector applies the clip to an object to be clipped.

Still further, the end effector is pivotally coupled to the shaft assembly via a rotating member, the cartridge being removably disposed in the rotating member; the rotating member includes a channel through which the clip is delivered from the clip cartridge to the end effector.

Compared with the prior art, the invention has the beneficial effects that:

the actuating member of the clip applier disclosed by the invention has a locking state and an unlocking state, and in the locking state, the actuating member can only perform a first movement, so that the end effector cannot rotate relative to the rod body assembly, and therefore, a doctor can not rotate the end effector relative to the rod body assembly even if touching the end effector by mistake in the operation process, thereby avoiding injury to a patient and improving the reliability and stability of the clip applier.

Drawings

FIG. 1 is a schematic view of a first angle of a clip applier provided in accordance with an embodiment of the invention;

FIG. 2 is a schematic view of a second angle of the clip applier provided in accordance with an embodiment of the invention, wherein FIG. 2 is a top view of FIG. 1, a first longitudinal axis of the end effector being at an angle to a second longitudinal axis of the shaft assembly;

FIG. 3 is a schematic view of a third angle of the clip applier provided in accordance with an embodiment of the invention, wherein FIG. 3 is a bottom view of FIG. 1;

FIG. 4 is a partial view of a first angle of the clip applier provided by an embodiment of the invention, wherein none of the sleeve, closure tube, swivel, and operating assembly are shown;

FIG. 5 is a partial area view of a fourth angle of the clip applier provided by an embodiment of the invention;

FIG. 6 is a partial area view of a fifth angle of the clip applier provided by an embodiment of the invention;

FIG. 7 is a schematic view of the manner in which the actuating member and locking member of the clip applier engage in accordance with an embodiment of the present invention, wherein the actuating member is in a locked condition;

FIG. 8 is a schematic view of the manner in which the actuating member and locking member of the clip applier engage in accordance with an embodiment of the present invention, wherein the actuating member is in an unlocked state;

FIG. 9 is a partial area view of a sixth angle of the clip applier provided by an embodiment of the invention, wherein the closure tube and sleeve are not shown;

FIG. 10 is a partial area view of a seventh angle of the clip applier provided by an embodiment of the invention;

FIG. 11 is a partial area view of an eighth angle of the clip applier provided by an embodiment of the invention, wherein the main shaft is not shown;

FIG. 12 is a partial area view of a ninth angle of the clip applier provided by an embodiment of the invention;

FIG. 13 is a partial area view of a tenth angle of the clip applier provided by the embodiment of the invention, primarily for the purpose of illustrating the construction of the second transmission member;

FIG. 14 is a schematic view of a second angle of the clip applier provided by an embodiment of the invention, wherein a first longitudinal axis of the end effector is parallel to a second longitudinal axis of the shaft assembly;

FIG. 15 is a schematic view of a first angle of a clip applier provided in accordance with an embodiment of the invention, wherein the operating assembly is not shown;

FIG. 16 is a schematic view of a first angle of the clip applier provided by the embodiment of the invention, primarily to illustrate the engagement of the pivot member with the main shaft;

FIG. 17 is a schematic view of a connecting sleeve of a clip applier according to an embodiment of the invention;

FIG. 18 is a cross-sectional view of a third angular partial area of the clip applier provided in accordance with an embodiment of the invention, wherein the clip feed bar is not in abutment with the clip;

FIG. 19 is a cross-sectional view of a third angular partial area of the clip applier provided in accordance with an embodiment of the invention, wherein the clip feed lever abuts the clip and urges the clip against the end effector;

FIG. 20 is a cross-sectional view of a first angled partial region of a clip applier provided in accordance with an embodiment of the invention, wherein the closure tube and sleeve are not shown;

FIG. 21 is a schematic view of a cartridge according to an embodiment of the present invention, wherein one side wall of the cartridge is not shown to show the internal structure of the cartridge;

FIG. 22 is a cross-sectional view of a cartridge provided in accordance with an embodiment of the present invention, wherein neither the clip nor the biasing assembly is shown;

FIG. 23 is a schematic view of a rotor according to an embodiment of the present invention;

FIG. 24 is a partial area view of a first angle of a clip applier provided in accordance with an embodiment of the invention, wherein the clip cartridge is not shown;

FIG. 25 is another partial area view of a first angle of the clip applier provided by an embodiment of the invention;

FIG. 26 is a partial area view of an eleventh angle of the clip applier provided by the particular embodiment of the invention;

FIG. 27 is a partial area view of a twelfth angle of the clip applier provided by the embodiment of the invention;

reference numerals of the above drawings:

1-an operating assembly; 101-a wrench; 102-a head housing; 1021-a first head housing; 103-a handle housing;

2-a shaft assembly; 201-a main shaft; 2011-a first pivot axis; 2012-a second plane; 3-an end effector; 301-a first jawarm; 302-a second jawarm; 4, clamping the bin; 401-inlet; 402-outlet; 403-clip; 4031-a first clip; 4032-a second clip; 4033-third clip; 404-a biasing assembly; 4041-first torsion arm; 4042-second torsion arm; 4043-push plate; 405-a first male clasp; 406-a second male clasp; 5-locking member; 501-a recess; 6-an actuator; 601-a protrusion; 602-a force application part; 7-a reset piece; 8-a clamping rod; 9-a rod body; 10-shaft body; 11-a rotating member; 1101-third pivot axis; 1102-a pivoting portion; 1103-channel; 1104-a first female clasp; 1105-a second female clasp; 12-a first link; 13-a second link; 1301-a second pivot axis; 14-a first transmission member; 1401-first tooth; 15-a second transmission member; 1501-a second tooth; 1502-limit teeth; 16-sleeve; 17-closing the tube; 1701-opening; 18-a pivot; 1801-fourth pivot shaft; 1802-fifth pivot axis; 1803-a first plane; 19-a rotating member; 20-connecting sleeve; 2001-first stop; 2002-a second stop; 21-luer fitting; 22-a first pivot axis; 23-a second pivot axis; 24-a first longitudinal axis; 25-a second longitudinal axis; 26-a third longitudinal axis; 27-a first socket; 28-a second socket; 29-a first kidney-shaped aperture; 30-a second kidney-shaped aperture; 31-column; 32-a stop; 33-clamping blocks; 34-a guide post; 35-a first guiding surface; 36-a second guiding surface; 37-a second elastic element; 38-a first push column; 39-a second push post; 40-a first driving member; 41-an annular flange; 42-a base; 4201—a first connection; 4202-second connector; 43-a first rod body; 44-a second rod body; 45-sliding grooves; 46-pushing part; 1011-a first head housing; 47-check ring; 48-a third elastic element; 49-fourth elastic element; 50-a fifth elastic element; 51-base.

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 a handle assembly of a clip applier. The term "proximal" refers to the portion that is proximal to the clinician, and the term "distal" refers to the portion that is distal to the clinician. I.e., the handle assembly is proximal and the end effector is distal, e.g., the proximal end of a component represents an end relatively close to the handle assembly and the distal end represents an end relatively close to the end effector. However, clip appliers may be used in many orientations and positions, and therefore these terms expressing relative positional relationships are not limited and absolute.

In 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.

Referring to fig. 1-3, the present embodiment provides a clip applier including an operating assembly 1, a shaft assembly 2 extending from the operating assembly 1, an end effector 3, a clip cartridge 4, a drive mechanism, and an actuator 6.

The operating assembly 1 includes a housing and a wrench 101 movably mounted on the housing, the housing being divided into a head housing 102 and a handle housing 103 extending from a lower side of the head housing 102 in a positional relationship, the handle housing 103 and the wrench 101 constituting a handle assembly, a user can grasp the handle housing 103 with one hand, and the wrench 101 is pulled by a finger so that the wrench 101 moves relative to the housing. Those skilled in the art will readily appreciate that while wrench 101 is shown and described, the clip appliers disclosed herein need not include wrench 101, e.g., the clip appliers may be motorized and may include an actuation button for actuating a motor to control firing of the device.

An end effector 3 is disposed at the distal end of the shaft assembly 2. The end effector 3 is pivotally coupled to the shaft assembly 2 to enable the end effector 3 to rotate relative to the shaft assembly 2. In particular, referring to fig. 1-2, the end effector 3 defines a first long axis 24 and the shaft assembly 2 defines a second long axis 25, and the end effector 3 is rotatable about the first pivot axis 22 relative to the shaft assembly 2 in response to actuation of the drive mechanism such that the first long axis 24 is parallel or at an angle to the second long axis 25, thereby facilitating positional and angular adjustment of the end effector 3 by a practitioner for ease of use.

The cartridge 4 has a clip 403, and the clip 403 can be applied to a clamped object (tissue or blood vessel) by the end effector 3. Specifically, the clip applier further includes a clip feed rod 8, where the clip feed rod 8 can move distally or proximally (see specifically below), and where the distal movement of the clip feed rod 8 can push the clips 403 of the clip cartridge 4 against the end effector 3, and where the proximal movement of the clip feed rod 8 causes the clip feed rod 8 to move after the clip feed is completed to effect a reset. When the clamp feed lever 8 pushes the clamp 403 against the end effector 3, the end effector 3 closes so that the clamp 403 can be applied to the clamped object.

The actuator 6 can act on the drive mechanism. The drive mechanism can be moved by manipulating the actuator 6 to drive the end effector 3 relative to the shaft assembly 2 about the first pivot axis 22. The actuator 6 has a locked state and an unlocked state. In the locked state, the actuating member 6 is made and can only make a first movement to switch it to the unlocked state. By "do and only do a first movement" it is meant that the actuator 6 is only able to do a first movement and not a second movement, and thus is unable to rotate the end effector 3 relative to the shaft assembly 2 about the first pivot axis 22. In the unlocked state, the actuator 6 is capable of a second movement to drive movement of the drive mechanism, thereby rotating the end effector 3 relative to the shaft assembly 2 about the first pivot axis 22.

In the locked state, the actuator 6 is only able to move in a first direction such that it cannot drive the drive mechanism, and thus the drive mechanism cannot drive the end effector 3 to rotate relative to the shaft assembly 2. In other words, when the actuator 6 is in the locked state, the end effector 3 cannot rotate about the first pivot axis 22 relative to the shaft assembly 2. Thus, during surgery, if it is not necessary to rotate the end effector 3, the actuator 6 is brought into a locked state.

When the actuating member 6 is in the locked state, the actuating member 6 cannot move in a second direction under the influence of the locking member 5, such that the driving mechanism cannot move, and the first link 12 limits the degree of freedom of the rotating member 11, such that the rotating member 11 cannot rotate, thereby preventing the end effector 3 from rotating about the first pivot axis 22 relative to the shaft assembly 2. That is, when the actuator 6 is in the locked state, even if a doctor touches the end effector 3 by mistake during the operation, the end effector 3 is not rotated relative to the shaft assembly 2, so that damage to the patient can be avoided, and the reliability and stability of the clip applier can be improved.

In the unlocked state, the actuating member 6 is capable of a third movement to switch it to the locked state. Specifically, in the unlocked state, the actuating member 6 is manipulated to rotate the end effector 3 relative to the shaft assembly 2 about the first pivot axis 22 by a certain angle, and then the actuating member 6 is moved in a third motion to switch to the locked state, so that the end effector 3 cannot rotate any more but is maintained at the angle, thereby facilitating the operation of a doctor and avoiding injury to a patient due to the fact that the doctor mistakenly touches the end effector 3 to cause the end effector 3 to rotate again.

Referring to fig. 4-5, the actuating member 6 is connected to the drive mechanism by a connection assembly. The connecting assembly comprises a rod body 9 and a shaft body 10. The rod body 9 is connected with the driving mechanism, so that the rod body 9 can drive the driving mechanism to move. The shaft 9 defines a third longitudinal axis 26, the third longitudinal axis 26 of the shaft 9 being substantially perpendicular to the second longitudinal axis 25 of the shaft assembly 2. The shaft 10 is connected to the shaft 9, the shaft 10 extending generally in a direction parallel to the second longitudinal axis 25 of the shaft assembly 2. The actuating member 6 is sleeved on the shaft body 10 and can slide along the shaft body 10. The actuator 6 is able to rotate about the third longitudinal axis 26 of the rod 9 and to rotate the rod 9.

Referring to fig. 4, 6-8, clip applier includes a locking member 5, with locking member 5 being disposed on head housing 102. In the locked state, the locking member 5 limits the actuating member 6 such that the actuating member 6 is capable of and only capable of a first movement, and in the unlocked state, the locking member 5 is disengaged from the actuating member 6. Specifically, the actuator 6 has a convex portion 601, and the convex portion 601 of the actuator 6 is located between the lock 5 and the rod 9. The locking member 5 has a plurality of recesses 501, each recess 501 of the locking member 5 is adapted to the protrusion 601 of the actuating member 6, each recess 501 of the locking member 5 is capable of receiving the protrusion 601, and the protrusion 601 of the actuating member 6 is capable of being selectively received in one of the recesses 501. In the locked state, the protrusion 601 of the actuating member 6 is operably retained within one of the recesses 501 of the locking member 5. In the unlocked state, the protrusion 601 of the actuating member 6 is disengaged from the recess 501 in which it is located. Since the actuating member 6 is slidable along the shaft body 10, the projection 601 of the actuating member 6 can be moved between the lever body 9 and the locking member 5 to switch the actuating member 6 between the locked state and the unlocked state.

The second movement is a rotation in this embodiment. The first motion and the third motion are both linear motions. Specifically, the actuator 6 slides on the shaft 10 in a direction towards the rod 9 as a first movement, the rotation of the actuator 6 about the third longitudinal axis 26 of the rod 9 as a second movement, and the actuator 6 slides on the shaft 10 in a direction away from the rod 9 as a third movement.

The actuator 6 slides (first movement) on the shaft body 10 in a direction toward the rod body 9 such that the convex portion 601 of the actuator 6 is disengaged from the concave portion 501 in which it is located, whereby the actuator 6 is switched from the locked state to the unlocked state. In the unlocked state, in response to a force applied to the actuating member 6, the actuating member 6 rotates about the third longitudinal axis 26 of the rod 9 (second movement) to drive the drive mechanism in motion such that the end effector 3 rotates about the first pivot axis 22 relative to the rod body assembly 2. In the unlocked state, the actuating member 6 slides (third movement) on the shaft body 10 in a direction away from the lever body 9 such that the convex portion 601 of the actuating member 6 is operatively accommodated in one of the concave portions 501 of the locking member 5, whereby the actuating member 6 is switched from the unlocked state to the locked state.

Referring to fig. 7 to 8, the locking piece 5 is an arc-shaped member, and a plurality of recesses 501 are provided inside the arc-shaped member, each recess 501 extending in a radial direction of the arc-shaped member. The plurality of recesses 501 are arranged substantially circumferentially and the plurality of recesses 501 are arranged along a movement track of the second movement of the actuator 6. Therefore, after the actuating member 6 rotates by a preset angle, the actuating member 6 can perform a third movement under the preset angle, so that the convex portion 601 of the actuating member 6 is accommodated in the concave portion 501 corresponding to the preset angle, and the actuating member 6 keeps the preset angle to switch to a locking state, so that the end effector 3 can be stably kept at a certain rotation angle.

The provision of the plurality of recesses 501 of the lock 5 enables the end effector 3 to be rotated at different angles and to be stably held at the rotation angle thereof. Specifically, the actuator 6 is configured to drive the end effector 3 in a first direction relative to the shaft assembly 2 about the first pivot axis 22, and is also configured to drive the end effector 3 in a second direction relative to the shaft assembly 2 about the first pivot axis 22. Rotation of the end effector 3 in the first direction includes a bottom-rotated condition in which the end effector 3 is in the first position. Rotation of the end effector 3 in the second direction also includes a bottom-rotated condition in which the end effector 3 is in the second position. The actuator 6 is capable of driving the end effector 3 to rotate to a first position, is also capable of driving the end effector 3 to rotate to a second position, and is capable of driving the end effector 3 to rotate between the first position and the second position. Since the plurality of recesses 501 of the locking member 5 are provided along the rotational locus of the actuating member 6, the actuating member 6 can be moved in a third direction after being rotated by a predetermined angle to be selectively accommodated in one of the recesses 501 corresponding to the predetermined angle, so that the actuating member 6 is switched to the locking state, thereby stably holding the end effector 3 at the first position or the second position or at a position between the first position and the second position. In other words, the end effector 3 is capable of rotating a plurality of angles relative to the shaft assembly 2 and is capable of being stably maintained at its rotational angle, thereby making the clip applier more flexible to use. The first position and the second position are both positions of the end effector 3 relative to the shaft assembly 2, with reference to the shaft assembly 2.

Referring to fig. 1, 6 to 8, the actuator 6 has a biasing portion 602, and the biasing portion 602 is located outside the head housing 102, so that the actuator 6 can be moved in the first or second movement by biasing the biasing portion 602.

Referring to fig. 6-8, the clip applier includes a reset member 7, the reset member 7 being capable of driving the actuating member 6 for a third movement such that the actuating member 6 is switched from the unlocked state to the locked state and remains in the locked state. Specifically, the restoring member 7 can apply a force to the actuating member 6 substantially facing away from the rod body 9, and slide the actuating member 6 on the shaft body 10 in a direction facing away from the rod body 9, so that the convex portion 601 of the actuating member 6 is accommodated in the concave portion 501 of the locking member 5, and the actuating member 6 is switched from the unlocked state to the locked state. The return member 7 comprises an elastic member. In this embodiment, the reset element 7 is a spring, and the spring is disposed between the actuating element 6 and the rod 9. Preferably, the spring is sleeved on the shaft body 10.

Referring to fig. 9-10 and 23, the clip applier of this embodiment includes a rotatable member 11. The end effector 3 is pivotally connected to the shaft assembly 2 by a swivel 11. The proximal end of the rotational member 11 is pivotally connected to the shaft assembly 2 such that the rotational member 11 is rotatable relative to the shaft assembly 2 about the first pivot axis 22. The distal end of the rotary member 11 is connected to the end effector 3. Specifically, the end effector 3 includes a first clamp arm 301 and a second clamp arm 302 pivotally connected to the rotary member 11, thereby enabling the first clamp arm 301 and the second clamp arm 302 to move toward each other, and the end effector 3 can rotate with the rotary member 11 when the rotary member 11 rotates about the first pivot axis 22 relative to the shaft assembly 2, i.e., the end effector 3 can rotate about the first pivot axis 22 relative to the shaft assembly 2 under the influence of the rotary member 11. Specifically, the shaft assembly 2 includes a main shaft 201. The proximal end of the rotary member 11 is pivotally connected to the distal end of the main shaft 201 by a first pivot shaft 2011. The first pivot shaft 2011 is disposed on the spindle 201, the rotary member 11 has a first pivot hole adapted to the first pivot shaft 2011, and the first pivot shaft 2011 is disposed through the first pivot hole, so that the rotary member 11 can rotate around the first pivot shaft 2011, and the end effector 3 can rotate around the first pivot axis 22 relative to the shaft assembly 2. The first pivot axis 22 is the central axis of the first pivot axis 2011.

Referring to fig. 9-10, the cartridge 4 in this embodiment is removably mounted to the rotatable member 11. Specifically, referring to fig. 21-23, the distal end of the rotating member 11 is provided with a first female clasp 1104 and the proximal end of the rotating member 11 is provided with a second female clasp 1105. The distal end of the cartridge 4 is provided with a first male buckle 405 which mates with a first female buckle 1104. The proximal end of the cartridge 4 is provided with a second male catch 406 which mates with a second female catch 1105. The first male buckle 405 is detachably engaged with the first female buckle 1104. The second male clasp 406 is detachably clasp-coupled with the second female clasp 1105 such that the cartridge 4 is detachably coupled with the rotator 11. Thus, when the end effector 3 rotates about the first pivot axis 22 relative to the shaft assembly 2, the cartridge 4 can rotate simultaneously with the end effector 3, and when the clips 403 of the cartridge 4 are exhausted, the clip applier can be continuously used by only disassembling the cartridge 4 from the rotating member 11 and removing the cartridge 4, and replacing the new cartridge 4 with the clips 403, thereby realizing the reuse of the clip applier and saving the cost.

In this embodiment, the drive mechanism includes a steering rod assembly and a transmission assembly. The transmission assembly is capable of driving the steering rod assembly in motion such that the steering rod assembly drives the end effector 3 in rotation relative to the shaft assembly 2 about the first pivot axis 22. The rod body 9 in the connecting assembly is connected with the transmission assembly, and the actuating piece 6 can drive the rod body 9 to rotate so that the transmission assembly moves, and therefore the transmission assembly drives the steering rod assembly to move.

Referring to fig. 9-11, the steering rod assembly includes a first link 12 and a second link 13. The first link 12 is pivotally connected to the second link 13, specifically, a second pivot shaft 1301 is disposed at a distal end of the second link 13, a second pivot hole adapted to the second pivot shaft 1301 is disposed at a proximal end of the first link 12, and the second pivot shaft 1301 is disposed through the second pivot hole, so that the first link 12 can rotate relative to the second link 13. The spindle 201 is provided with a first groove body, and the second link 13 is provided in the first groove body and is movable therein.

The distal end of the first link 12 is pivotally connected to the proximal end of the rotator 11 such that the distal end of the first link 12 can act on the rotator 11. The rotator 11 is coupled to the main shaft 201 of the shaft assembly 2 via a first pivot point, and the first link 12 is coupled to the rotator 11 via a second pivot point, the first pivot point being non-coincident with the second pivot point. Specifically, the proximal end of the rotating member 11 is provided with a third pivot shaft 1101, the distal end of the first link 12 is provided with a third pivot hole adapted to the third pivot shaft 1101, the third pivot shaft 1101 is disposed through the third pivot hole, and the third pivot shaft 1101 is not coincident with the first pivot shaft 2011. Since the first link 12 is pivotally connected to the rotating member 11, the first link 12 can apply force to the rotating member 11 to drive the rotating member to rotate, and mutual interference between the first link and the rotating member during movement is reduced.

The second link 13 is connected to the transmission assembly. Actuation of the actuator 6 causes rotation of the actuator 6 to move the drive assembly which drives the second link 13 distally or proximally. Under the influence of the second link 13, the first link 12 rotates in the first direction or the second direction, thereby rotating the rotary member 11 in the first direction or the second direction, and thereby rotating the end effector 3 in the first direction or the second direction relative to the shaft assembly 2 about the first pivot axis 22, as described later.

Referring to fig. 4-6, 11-13, the drive assembly includes a first drive member 14 and a second drive member 15 drivingly connected. The second transmission member 15 is connected with the second connecting rod 13, the first transmission member 14 is connected with the rod body 9 in the connecting assembly, and the rod body 9 can drive the first transmission member 14 to move. Manipulation of the actuator 6 causes the lever 9 to rotate the first transmission member 14, causing the second transmission member 15 to move distally or proximally, thereby causing the second link 13 to move distally or proximally.

Referring specifically to fig. 7-8, 12, the first transmission member 14 has a first tooth 1401. The first tooth 1401 includes a plurality of first teeth that are circumferentially arranged such that a central axis of the first tooth 1401 is substantially perpendicular to the second longitudinal axis 25 of the shaft assembly 2. Referring to fig. 12-13, the second transmission member 15 is disposed about the main shaft 201, the second transmission member 15 having a second tooth portion 1501, the second tooth portion 1501 including a plurality of second teeth disposed generally along the second longitudinal axis 25 of the shaft assembly 2. The second tooth 1501 is provided on one side of the second transmission member 15. The plurality of second teeth are arranged in a row.

The first tooth 1401 is in meshed engagement with the second tooth 1501. Thus, when the first gear 1401 rotates, the first gear 1401 meshes with the second gear 1501, causing proximal or distal displacement of the second driver 15.

Referring to fig. 7-8, 12, the first transmission member 14 is a gear having a first tooth portion 1401. One end of the rod body 9 is connected with a gear.

Referring to fig. 12-13, second tooth 1501 has opposite first and second ends along second longitudinal axis 25 of shaft assembly 2, the first end having a spacing tooth 1502 and the second end also having a spacing tooth 1502. That is, a plurality of second teeth of the second tooth portion 1501 are located between two spacing teeth 1502. The width of the spacing teeth 1502 is greater than the second teeth, and the spacing teeth 1502 are not adapted to the first teeth 1401 of the first transmission member 14, so that the first transmission member cannot engage with the spacing teeth 1502 such that the first transmission member 14 can only move between the spacing teeth 1502 on both ends of the second transmission member 15, whereby when the first transmission member 14 moves to the spacing teeth 1502 on the first end of the second teeth 1501, the first transmission member 14 cannot move any further, and the driving mechanism drives the end effector 3 to rotate to the first position. When the first transmission member 14 moves to the position of the stop tooth 1502 at the second end of the second tooth portion 1501, the first transmission member 14 cannot move any further, and the driving mechanism drives the end effector 3 to rotate to the second position.

It should be noted that, for the movement of the transmission assembly, the first transmission member 14 moves along the second tooth portion of the second transmission member 15, but in actual movement, the first transmission member 14 is not displaced in the direction of the second longitudinal axis 25 of the shaft assembly 2, and there is a displacement of the second transmission member 15 distally or proximally in the direction of the second longitudinal axis 25 of the shaft assembly 2 to drive the steering rod assembly to move, thereby rotating the end effector 3.

With reference to the angle and direction of placement of the clip applier in fig. 1 and 4, the path of rotation of the end effector 3 is perpendicular to the plane of the paper on which fig. 1 and 4 are located. In fig. 1 and 4, the first direction is clockwise, and the second direction is counterclockwise.

The actuating member 6 is manipulated such that the actuating member 6 rotates in a clockwise direction to rotate the first toothed portion 1401 of the first transmission member 14 in a clockwise direction, the first toothed portion 1401 is in meshed transmission with the second toothed portion 1501 such that the second transmission member 15 is displaced distally to move the second link 13 distally such that the first link 12 rotates in a first direction to drive the rotating member 11 to rotate in the first direction, whereby the end effector 3 and the cartridge 4 rotate in the first direction.

The actuating member 6 is manipulated such that the actuating member 6 rotates in a counter-clockwise direction to rotate the first toothed portion 1401 of the first transmission member 14 in a counter-clockwise direction, the first toothed portion 1401 is in meshed transmission with the second toothed portion 1501 such that the second transmission member 15 is displaced proximally, thereby displacing the second link 13 proximally, such that the first link 12 rotates in a second direction to drive the rotating member 11 to rotate in the second direction, whereby the end effector 3 and the cartridge 4 rotate in the second direction.

Referring to fig. 1-2, 14-15, the clip applier of the present embodiment further includes a cannula 16 and a closure tube 17. The sleeve 16 is fitted over the main shaft 201, and the sleeve 16 also forms part of the shaft assembly 2. The closure tube 17 is arranged at the distal end of the sleeve 16, and the closure tube 17 is sleeved on the rotating member 11 and the clamping bin 4. Referring to fig. 1 and 24, the closing tube 17 has an opening 1701, and the cartridge 4 can be placed into the closing tube 17 from the opening 1701, and then the first male buckle 405 of the cartridge 4 is buckled with the first female buckle 1104 of the rotating member 11, and the second male buckle 406 of the cartridge 4 is buckled with the second female buckle 1105 of the rotating member 11, so that the cartridge 4 is detachably mounted on the rotating member 11. When removing the cartridge 4, the cartridge 4 is removed from the opening 1701 and the cartridge 4 is removed from the closure tube 17 from the opening 1701.

Cannula 16 is capable of moving proximally or distally (see more particularly below). The sleeve 16 can act on a closure tube 17, the closure tube 17 being mated with the end effector 3. The cannula 16 is moved proximally or distally so that the closure tube 17 can be moved proximally or distally to open or close the end effector 3. Specifically, there is a first resilient element between the first jawarm 301 and the second jawarm 302. When the closure tube 17 is moved distally (i.e., forward), the end effector 3 is received within the closure tube 17 from the distal end of the closure tube 17, at which time the first resilient element is compressed to store energy and the end effector 3 is closed. When the closure tube 17 is moved proximally (i.e., rearward), the end effector 3 extends from the distal end of the closure tube 17 and the first resilient element releases energy to open the end effector 3. In this embodiment, the first elastic element is a spring.

Referring to fig. 2 and 15, the sleeve 16 is pivotally connected to the closure tube 17 and, as the closure tube 17 is sleeved on the rotatable member 11, the closure tube 17 rotates relative to the sleeve 16 about the second pivot axis 23 in response to the force applied to the closure tube 17 by the rotatable member 11 as the rotatable member 11 rotates. The second pivot axis 23 is parallel to the first pivot axis 22.

Referring to fig. 14-16, the sleeve 16 is pivotally connected to the closure tube 17 by a pivot member 18. In this embodiment two pivot members 18 are provided together. The proximal end of each pivot member 18 is pivotally connected to the sleeve 16 and the distal end of each pivot member 18 is pivotally connected to the closure tube 17.

Specifically, the proximal end of each pivot member 18 is provided with a fourth pivot shaft 1801 and the distal end of each pivot member 18 is provided with a fifth pivot shaft 1802. The first pivot axis 2011, the fourth pivot axis 1801, and the fifth pivot axis 1802 are disposed in substantially the same direction, and are all substantially perpendicular to the second longitudinal line of the shaft assembly 2. The distal end of the sleeve 16 is provided with two fourth pivot holes. The fourth pivot hole is adapted to the fourth pivot shaft 1801. The fourth pivot shaft 1801 of one pivot member 18 is disposed through one fourth pivot hole, and the fourth pivot shaft 1801 of the other pivot member 18 is disposed through the other fourth pivot hole. The proximal end of the closure tube 17 is provided with two fifth pivot holes. The fifth pivot hole is adapted to the fifth pivot axle 1802. The fifth pivot shaft 1802 of one pivot member 18 is disposed through one fifth pivot hole, and the fifth pivot shaft 1802 of the other pivot member 18 is disposed through the other fifth pivot hole.

The central axis of the fourth pivot shaft 1801 of one pivot member 18 coincides with the central axis of the fourth pivot shaft 1801 of the other pivot member 18. The central axis of the fifth pivot axle 1802 of one pivot member 18 coincides with the central axis of the fifth pivot axle 1802 of the other pivot member 18.

Referring to the placement angle and direction of the clip applier in fig. 1, when the end effector 3 is in the open-to-bottom state, the distance between the distal ends of the first and second jawarms 301 and 302 is maximized in the up-down direction. The distance between the distal ends of the first and

second jawarms

301, 302 is minimized in the up-down direction when the end effector 3 is in the fully closed state. The full closure of the end effector 3 causes the clip 403 between the first and

second jawarms

301, 302 to transition from an open state to a fully closed state for clamping against tissue or a blood vessel.

Referring to fig. 16, in the open-to-bottom state of the end effector 3, the center axis of the fifth pivot shaft 1802 coincides with the center axis of the first pivot shaft 2011, and when the rotator 11 rotates, the closure tube 17 can rotate about the center axis of the fifth pivot shaft 1802 with respect to the sleeve 16. At this time, the second pivot axis 23 coincides with the central axis of the fifth pivot 1802.

In the fully closed state of the end effector 3, the closure tube 17 is able to rotate relative to the sleeve 16 about the central axis of the fourth pivot shaft 1801 as the rotator 11 rotates due to the sleeve and closure tube both moving distally such that the central axis of the fourth pivot shaft 1801 coincides with the central axis of the first pivot shaft 2011. At this time, the second pivot axis 23 coincides with the central axis of the fourth pivot shaft 1801.

As described above, the first pivot axis 22 is the central axis of the first pivot shaft 2011. The first pivot axis 22 coincides with the second pivot axis 23 when the end effector 3 is in the open-to-bottom state and in the fully closed state.

In actual use, when the end effector 3 is in the fully closed state, the clip 403 within the end effector 3 is already clamped against the blood vessel or tissue, and the end effector 3 is not released from the blood vessel or tissue (the end effector 3 is opened and is not released from the blood vessel or tissue), the end effector 3 is typically not rotated, i.e., when the end effector 3 is in the closed state, the rotation of the rotating member 11 is typically not triggered, and the closure tube 17 is not rotated.

After a certain angle of rotation of the closure tube 17 relative to the cannula 16, the cannula 16 is still able to act on the closure tube 17 via the pivot member 18 to drive the closure tube 17 proximally or distally when the cannula 16 is moved proximally or distally due to the pivot member 18.

Referring to fig. 1 and 15, the clip applier also includes a rotating member 19. The rotating member 19 is sleeved on the sleeve 16 and fixedly connected with the sleeve 16. Thereby, the sleeve 16 can be driven to rotate about the second longitudinal axis 25 of the shaft assembly 2 by rotating the rotary member 19. When the sleeve 16 moves forward or backward, the rotary member 19 also moves forward or backward with the sleeve 16.

The sleeve 16 is in this embodiment pivotally connected to the closure tube 17 by two pivot members 18 such that the sleeve 16 is able to drive the closure tube 17 in rotation when the sleeve 16 is rotated about the second longitudinal axis 25 of the shaft assembly 2 by the rotation member 19. That is, by rotating the rotating member 19, the sleeve 16, the two pivoting members 18, and the closure tube 17 are all rotated.

In particular, referring to fig. 12-13, 15-16, each pivot member 18 has a first planar surface 1803 that mates with spindle 201, and the distal end of spindle 201 has a second planar surface 2012 that mates with first planar surface 1803. Thus, when the rotation member 19 rotates to rotate the sleeve 16 to rotate each pivot member 18, each first plane 1803 is in form-fit with its corresponding second plane 2012, such that the main shaft 201 follows the rotation of the pivot member 18. That is, when the rotary member 19 rotates to rotate each of the pivoting members 18, the pivoting members 18 can exert a force on the spindle 201 to drive the spindle 201 to rotate about the second longitudinal axis 25 of the shaft assembly 2, whereby the spindle 201 rotates the rotary member 11, so that the closure tube 17 and the end effector 3 rotate, thereby facilitating the doctor to clamp the blood vessel or tissue after adjusting the end effector 3 to a proper angle. The end effector 3 rotates relative to the shaft assembly 2 about the first pivot axis 22 such that the first longitudinal axis 24 of the end effector 3 is parallel or at an angle to the second longitudinal axis 25 of the shaft assembly 2. When the first longitudinal axis 24 of the end effector 3 is parallel to or at an angle to the second longitudinal axis 25 of the shaft assembly 2, the closure tube 17, the rotator 11, and the end effector 3 can each be rotated by rotating the rotator 19 to rotate the pivot 18 to drive the spindle 201.

In this embodiment, the second transmission member 15 cannot rotate around the second longitudinal axis 25 of the shaft assembly 2 due to the restriction of the first transmission member 14, and in order to accommodate the rotation of the spindle 201, the second transmission member 15 is connected to the spindle 201 through the connecting sleeve 20. Specifically, referring to fig. 12-13 and 15, the connecting sleeve 20 is sleeved on the main shaft 201. The second transmission member 15 is sleeved on the connecting sleeve 20. The proximal end of the second link 13 is fixedly connected to the connection sleeve 20. The second link 13 is disposed in the first groove of the spindle 201, and when the spindle 201 rotates around the second longitudinal axis 25 of the shaft assembly 2, the second link 13 is driven to rotate around the second longitudinal axis 25 of the shaft assembly 2, so that the second link 13 drives the connecting sleeve 20 to rotate around the second longitudinal axis 25 of the shaft assembly 2 in synchronization with the spindle 201, and during the process that the connecting sleeve 20 rotates around the second longitudinal axis 25 of the shaft assembly 2, the second transmission member 15 does not rotate, that is, there is relative rotation between the connecting sleeve 20 and the second transmission member 15.

Referring to fig. 17, the distal end of the connection sleeve 20 is provided with a first stop 2001 and the proximal end of the connection sleeve 20 is provided with a second stop 2002. The first stop 2001 and the second stop 2002 are both circumferentially extending. The second transmission member 15 is disposed between the first stop 2001 and the second stop 2002, whereby when the second transmission member 15 is displaced distally or proximally, the second transmission member 15 is able to act on the first stop 2001 or the second stop 2002 such that the connection sleeve 20 is moved distally or proximally to move the second link 13 distally or proximally.

In fig. 1 and 4, the cartridge 4 is located at the upper end of the rotor 11. The opening 1701 of the closure tube 17 faces upward. The angle of the clip applier of fig. 1 can be considered by the physician in use of the clip applier as an initial state of the clip applier so that the physician can recognize and become familiar with the laws of angular adjustment of the end effector 3.

In actual use, the relative position between the end effector 3 and the operating assembly 1 is continuously changed by rotating the rotary member 19, so that the direction in which the end effector 3 rotates relative to the shaft assembly 2 about the first pivot axis 22 is also continuously changed, and the first direction is not necessarily clockwise and the second direction is not necessarily counterclockwise among other angles of clip appliers.

Referring to fig. 1 and 15, the clip applier further includes a luer fitting 21, the luer fitting 21 being connected to the rotary member 19. The luer connector 21 of this embodiment is a common luer connector in the prior art, so as to communicate the interior of the clip applier with the exterior so as to clean the interior of the clip applier, and the structure of the luer connector 21 is not described herein.

The cannula 16 has a flushing port in communication with the interior of the cannula 16. Luer fitting 21 has a flush channel. The flushing channel is provided with a liquid inlet and a liquid outlet. The liquid outlet of the flushing channel is communicated with the flushing hole of the sleeve 16, flushing liquid is injected into the liquid inlet of the luer joint 21, and the flushing liquid can enter the interior of the clip applier through the flushing channel and the flushing hole so as to clean the interior of the clip applier and remove pollutants, so that the clip applier can be reused. When the sleeve 16 moves forward or backward, the rotary member 19 also moves forward or backward with the sleeve 16, and thus the luer 21 also moves forward or backward, whereby the luer 21 can be prevented from restricting the forward and backward movement of the sleeve 16 and the luer 21 can be always communicated with the flushing hole of the sleeve 16. The flushing hole of the cannula 16 in this embodiment is arranged inside the rotation member 19. The inlet of the flushing channel of the luer fitting 21 is located outside the rotating member 19 and the outlet of the flushing channel is located inside the rotating member 19 and communicates with the flushing hole of the cannula 16.

18-19, 21, in this embodiment, the cartridge 4 includes at least two clips 403. The cartridge 4 has a clip cavity to receive the clip 403, the clip 403 forming a stack within the clip cavity. The number of the clips 403 of the clip storehouse 4 is adjustable, the number of the clips 403 can not influence the normal use of the clip applier, and the number of the clips 403 can be adjusted according to the use requirement in actual use. During the surgical procedure, a continuous clamping process typically applies three clips 403 to the clamped object, so that the cartridge 4 in this embodiment includes three clips 403.

The clamping cavity of the clamping bin 4 comprises a first cavity and a second cavity. Taking the placement direction and the placement angle of the clip applier in fig. 3 and 18-19 as references, the first cavity is arranged above the second cavity, and the first cavity is communicated with the second cavity. The proximal end of the second cavity intersects the proximal end face of the cartridge 4 to form an inlet 401 of the second cavity and the distal end of the second cavity intersects the distal end face of the cartridge 4 to form an outlet 402 of the second cavity.

The three clips 403 of the clip magazine 4 are a clip 4031, a clip 4032 and a clip 4033 in this order from top to bottom. The clip 4031 and the clip 4032 are disposed in the first cavity. The clip 4033 is disposed in the second cavity. The cartridge 4 further includes a biasing assembly 404, the biasing assembly 404 being capable of applying a generally downward force to an upper end surface of the clip 4031.

In this embodiment, the clamping bar 8 is made of elastic material, including but not limited to metal, so that the clamping bar 8 is flexible and can be bent and deformed to adapt to the rotation of the clamping chamber 4. The spindle 201 of the shaft assembly 2 is provided with a second groove in which the feed clamping lever 8 is disposed and moves. In an initial state (i.e., the clamp bar 8 does not push the clamp 403 against the end effector 3), the distal end of the clamp bar 8 extends into the second cavity from the inlet 401 of the second cavity. Thus, when the cartridge 4 rotates relative to the shaft assembly 2, the feed rod 8 bends under the action of the cartridge 4 to accommodate rotation of the cartridge 4.

Referring to fig. 20, the distal end of the rotating member 11 has a pivoting portion 1102. The first clamp arm 301 and the second clamp arm 302 of the end effector 3 are pivotally connected to a pivot 1102. The pivoting portion 1102 has a channel 1103, a distal end of the channel 1103 leads between the first and second jawarms 301 and 302, and a proximal end of the channel 1103 communicates with the outlet 402 of the cartridge 4, so that under the action of the feeding rod 8, the clip 403 of the cartridge 4 can enter between the first and second jawarms 301 and 302 via the channel 1103 and be supported between the first and second jawarms 301 and 302. By manipulating the wrench 101 of the operating assembly 1, the first clamp arm 301 and the second clamp arm 302 are closed, and the clip 403 between the first clamp arm 301 and the second clamp arm 302 is closed to be applied to the object to be clamped. The channel 1103 limits the movement space of the clip 403 during the movement of the clip 403 from the cavity of the cartridge 4 to the end effector 3, so that the clip 403 can move along a predetermined trajectory between the first and second jawarms 301 and 302 without being offset during the movement and cannot move between the first and second jawarms 301 and 302.

Referring again to fig. 18-19, when the clamping bar 8 is moved distally (i.e., forward) to push the clip 4033 against the end effector 3, and the clamping bar 8 is moved to effect the reset, both the clip 4031 and the clip 4032 move downwardly under the influence of the biasing assembly 404 such that the clip 4032 enters the second cavity to enable continued clamping. It should be noted that, after the clip feeding lever 8 pushes the clip 4033 against the end effector 3 and before the clip feeding lever 8 moves to achieve the reset, the clip feeding lever 8 abuts against the bottom of the clip 4032, so that neither the clip 4031 nor the clip 4032 moves downward, but after the clip feeding lever 8 moves proximally (i.e. backward) to achieve the reset, the clip 4031 and the clip 4032 can move downward under the action of the biasing assembly 404. The downward movement of clip 4031 and clip 4032 under the bias of assembly 404 is referenced to the angle and direction of placement of the clip appliers in FIGS. 3 and 18-19. Clip 4031 and clip 4032 can still be moved into the second cavity by biasing assembly 404 as the clip applier's direction and angle of placement changes.

The biasing assembly 404 includes a resilient member. The elastic member is in contact with the upper end of the clip 403, and the elastic member is deformed to store energy, whereby the elastic member can apply a substantially downward force to the clip 403. In this embodiment, the elastic member is a torsion spring. The torsion spring has a first torsion arm 4041 and a second torsion arm 4042. If no external force is applied, the two torsion arms of the torsion spring are in a natural stretching state. In the natural extended state, the first torsion arm 801 and the second torsion arm 802 are each disposed generally in the up-down direction in fig. 21. In this embodiment, the first torsion arm 4041 of the torsion spring is clamped in the clip housing 4, and the second torsion arm 4042 of the torsion spring rotates by a certain angle relative to the natural extended state and then acts on the clip 4031, so that an acting force can be applied to the clip 4031.

The biasing assembly 404 in this embodiment also includes a push plate 4043. The second torsion arm 4042 of the torsion spring is connected to the push plate 4043. The torsion spring applies a force to the clip 4031 through the push plate 4043, whereby the force receiving area can be increased, so that the torsion spring can act on the clip 4031 more stably.

In this embodiment, the end effector 3 communicates with the outlet 402 of the second cavity of the cartridge 4, which is not coaxial with the shaft assembly 2, and thus the end effector 3 is not coaxial with the shaft assembly 2, and the end effector 3 is offset relative to the shaft assembly 2, so that there is no overlap of the first longitudinal axis 24 of the end effector 3 with the second longitudinal axis 25 of the shaft assembly 2.

Referring to fig. 25-27, to drive sleeve 16 and clip feed bar 8 distally, the clip applier of the present embodiment further includes a drive mechanism housed within head housing 102. The transmission mechanism alternatively has a first state and a second state. In the first state, the transmission mechanism drives the clamping bar 8 to move distally, and in the second state, the transmission mechanism drives the sleeve 16 to move distally.

Specifically, the transmission mechanism includes a switching mechanism, a first driving member 40, and a second driving member. The first drive member 40 is used to drive the clamping bar 8 distally and the second drive member is used to drive the cannula 16 distally.

The wrench 101 is in contact with the switching mechanism to supply power to the switching mechanism, and the switching mechanism transmits the power to the first driver 40 or the second driver alternatively. The wrench 101 can drive the switching mechanism to move distally. In the first state, the switching mechanism moves distally to drive the first driver 40 to move distally. After the switching mechanism moves to the far end by a preset stroke, the transmission mechanism is switched from the first state to the second state. When the transmission mechanism is switched to the second state, the switching mechanism continues to move distally to drive the second driving member to move distally.

The first driving member 40 is an annular member, the first driving member 40 is sleeved on the main shaft 201 and can move along the main shaft 201, and an annular flange 41 is arranged on the outer peripheral surface of the first driving member 40. The proximal end of the clamping bar 8 is connected to the first driving member 40 and the distal end of the clamping bar 8 is capable of pushing the clip 403.

The second driving member includes a base 42, a first rod 43 and a second rod 44. The base 42 is sleeved on the spindle 201, and the distal end of the base 42 is connected with the proximal end of the sleeve 16. The base 42 has a first side and a second side opposite the first side, the first side having a first connection portion 4201 extending outwardly therefrom and the second side having a second connection portion 4202 extending outwardly therefrom. The first connection 4201 is connected to the distal end of the first rod 43, and the second connection 4202 is connected to the distal end of the second rod 44. Each rod body is provided with a sliding groove 45, the sliding grooves 45 are closed grooves, and the distal end of each sliding groove 45 is provided with a pushing part 46.

The switching mechanism includes a base 51, a first clutch mechanism, and a second clutch mechanism. The wrench 101 abuts the base 51 to power the switching mechanism so that the switching mechanism moves distally.

When the transmission mechanism is in the first state, the base 51 is sleeved on the first driving member 40. The base 51 has a first side and a second side opposite the first side. The first side of the base 51 is provided with a first socket 27 and the second side of the base 51 is provided with a second socket 28. The first sleeving part 27 is sleeved on the first rod body 43 and can move along the first rod body 43, and the second sleeving part 28 is sleeved on the second rod body 44 and can move along the second rod body 44. The first side of the base 51 is further provided with a first kidney-shaped aperture 29 and the second side is further provided with a second kidney-shaped aperture 30. The first kidney-shaped hole 29 is provided above the first socket portion 27, and the second kidney-shaped hole 30 is provided above the second socket portion 28. Each kidney-shaped hole extends in the up-down direction.

The first clutch mechanism includes a first clutch member and a clutch switching mechanism. The first clutch member is connected with the clutch switching mechanism. The second clutch mechanism includes a second clutch member.

The clip applier head housing 102 includes a first head housing 1021 and a second head housing. The first head casing 1021 and the second head casing are symmetrically disposed along the axial direction of the spindle 201.

The clutching shifting mechanism includes a guide post 34 and a guide rail. The guide rail is disposed in the head housing 102, the guide post 34 is movable on the guide rail, and the guide post 34 is connected to the first clutch member.

The guide rail is alternatively provided on the inner wall of the first head housing 1021 or the inner wall of the second head housing. In order to make the movement of the guide post 34 on the guide rail smoother, the guide rail is symmetrically provided at the inner walls of the first head housing 1021 and the second head housing. That is, the inner wall of the first head housing 1021 is provided with a guide rail, and the inner wall of the second head housing is also provided with a guide rail.

The guide post 34 has a first end and a second end. The guide post 34 is accommodated in the base 51, and a first end of the guide post 34 is protruded from the first kidney-shaped hole 29 and then is positioned on a guide rail of an inner wall of the first head housing 1021. The second end of the guide post 34 extends from the second kidney-shaped aperture 30 and is positioned on a guide rail on the inner wall of the second head housing. Since each kidney-shaped hole extends in the up-down direction, the guide post 34 can move up and down,

the guide rail comprises a first guide surface 35 and a second guide surface 36. The second guide surface 36 is higher than the first guide surface 35. The guide post 34 is movable between a first guide surface 35 and a second guide surface 36.

The first clutch is accommodated in the base 51. The first clutch member includes a cylinder 31, a stopper 32 and a latch 33. The upper end of the column 31 is connected to the guide post 34, so that the column 31 can drive the guide post 34 to move distally or proximally, and the guide post 34 can drive the column 31 to move up and down. The stopper 32 is disposed at the bottom end of the column 31. The clamping block 33 is arranged at the bottom end of the stop block 32. The bottom end of the latch 33 is detachably coupled with the first driving member 40. The bottom end surface of the clamping block 33 is an arc surface matched with the surface of the first driving piece 40 in a shape, so that the clamping block 33 is connected with the first driving piece 40 more stably.

In the first state, the clamping block 33 is located at the proximal end of the annular baffle, the distal end surface of the clamping block 33 abuts against the proximal end surface of the annular flange 41, and the clamping block 33 can push the annular flange 41 distally, so that the first driving member 40 moves distally. In the second state, the latch 33 moves upward to disengage from the annular rib 41.

The proximal end surface of the latch 33 is an inclined surface, and thus, when the first driving member 40 and the first clutch member are reset, the proximal end surface of the latch 33 can pass through the distal end of the annular rib 41, so that the latch 33 returns to the proximal end of the annular rib.

The first clutch member further includes a second elastic member 37, and the second elastic member 37 is a spring. The second elastic element 37 is sleeved on the column 31, the upper end of the second elastic element 37 is abutted against the guide column 34, and the lower end of the second elastic element 37 is abutted against the stop block 32. In the first state, the second elastic element 37 is in a compressed state, and the second elastic element 37 applies downward force to the stop 32, so that the clamping block 33 is in more stable abutting connection with the first driving member 40, and the stability of the distal movement of the first driving member 40 is improved.

The second clutch member includes a first push post 38 and a second push post 39. The first pushing post 38 is located in the sliding groove 45 of the first rod body 43 and can move in the sliding groove 45 of the first rod body 43, and the upper end and the lower end of the first pushing post 38 are connected with the first sleeving part 27.

The second pushing post 39 is located in the sliding groove 45 of the second rod body 44 and can move in the sliding groove 45 of the second rod body 44, and the upper end and the lower end of the second pushing post 39 are connected with the second sleeving part 28.

When the transmission mechanism is in the first state for the first driving member 40, under the pushing action of the wrench 101, the base 51 moves distally, so that the first clutch member moves distally, and the first driving member 40 is pushed to move distally to drive the pinch rod 8 to move distally. The guide post 34 is moved distally along the first guide surface 35 by the first clutch member. When the guide post 34 moves from the first guide surface 35 to the second guide surface 36, the guide post 34 drives the first clutch member to move upwards, so that the clamping block 33 of the first clutch member is separated from the annular flange 41 of the first driving member 40, and the first clutch member is separated from the first driving member 40, at the moment, the transmission mechanism is switched to the second state, and the first driving member 40 is not moved distally any more. In the second state, continued distal movement of the base 51 passes through the first driver 40.

For the second driving member, when the transmission mechanism is in the first state, the first pushing post 38 is separated from the pushing portion 46 of the first rod 43, and the second pushing post 39 is separated from the pushing portion 46 of the second rod 44, at this time, the second driving member is not driven to be in the stationary state. Under the pushing action of the wrench 101, the base 51 moves distally, so that the first pushing post 38 moves distally in the sliding groove 45 of the first rod 43 and gradually approaches the pushing portion 46 of the first rod 43, and the second pushing post 39 moves distally in the sliding groove 45 of the second rod 44 and gradually approaches the pushing portion 46 of the second rod 44. When the first push rod 38 abuts against the pushing portion 46 of the first rod body 43, and the second push rod 39 abuts against the pushing portion 46 of the second rod body 44, the transmission mechanism is switched to the second state, and the second clutch member drives the second driving member to move distally, so that the sleeve 16 moves distally to close the end effector.

In summary, when the first driving member 40 is separated from the first clutch member, the pushing portion 46 of the second driving member just abuts against the second clutch member.

The clip applier also includes two third resilient members 48. The third elastic member 48 is a spring. One of the third elastic elements 48 is sleeved on the first rod 43, the proximal end thereof is abutted against the first sleeve joint portion 27, and the distal end thereof is abutted against the first connection portion 4201. The other third elastic element 48 is sleeved on the second rod body 44, the proximal end thereof is abutted against the second sleeve-connecting portion 28, and the distal end thereof is abutted against the second connecting portion 4202. During the process of moving the switching mechanism distally, the first sleeve joint part 27 gradually approaches the first connection part 4201, meanwhile, the second sleeve joint part 28 gradually approaches the second connection part 4202, the two third elastic elements 48 can be compressed to store the first energy, the first energy is released, and the switching mechanism can be moved proximally to reset.

The clip applier also includes a fourth spring element 49, the fourth spring element 49 being a spring. The fourth elastic element 49 is sleeved on the main shaft 201. The proximal end of the fourth elastic element 49 abuts against the annular flange 41 of the first driving member 40, the distal end of the fourth elastic element 49 abuts against the retainer ring 47 outside the spindle 201, the retainer ring 47 extends in the circumferential direction of the spindle 201, and the retainer ring 47 is provided on the proximal side of the second driving member 15. In the process of driving the first driving member 40 to move distally, the annular flange 41 of the first driving member 40 gradually approaches the retainer ring 47, so that the fourth elastic element 49 is compressed to store the second energy, release the second energy, and the first driving member 40 can move proximally to reset, so that the clip feeding rod 8 moves proximally to reset.

The clip applier also includes a fifth spring element 50, with the fifth spring element 50 being a spring. The fifth elastic element 50 is sleeved on the sleeve 16. The proximal end of the fifth elastic element 50 abuts against the distal end face of the seat 42, and the distal end of the fifth elastic element 50 abuts against the inner wall of the head housing 102. During distal movement of the second driver, which is driven by the switching mechanism, the fifth resilient element 50 is compressed to store the third energy and release the third energy, the second driver is able to move proximally to reset, causing the cannula 16 to move proximally to reset.

In summary, in the present embodiment, in the locked state, the actuator 6 can only perform the first movement, so that it cannot drive the driving mechanism to move, and thus the driving mechanism cannot drive the end effector 3 to rotate relative to the shaft assembly 2, and even if a doctor touches the end effector 3 by mistake during the operation, the end effector 3 cannot rotate relative to the shaft assembly 2, thereby avoiding injury to the patient and improving reliability and stability of the clip applier. In the unlocking state, the actuating member 6 is manipulated to rotate the end effector 3 relative to the shaft assembly 2, and when the end effector 3 rotates by a certain angle relative to the shaft assembly 2, the actuating member 6 is made to perform a third movement to switch to the locking state, so that the end effector 3 can not rotate any more but is kept at the angle, thereby being convenient for a doctor to operate, and avoiding injury to a patient caused by the fact that the doctor mistakenly touches the end effector 3 to rotate again.

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

1. A clip applier characterized by comprising:

a shaft assembly;

2. The clip applier of claim 1, wherein in said unlocked state, said actuator further performs a third movement to switch it to said locked state.

3. The clip applier of claim 1, wherein said second movement is a rotation, said actuation member rotating in response to a force applied to said actuation member, causing said end effector to rotate relative to said shaft assembly.

4. The clip applier of claim 1, further comprising a lock member that, in said locked state, positions said actuating member such that said actuating member is permitted only said first movement, and in said unlocked state, said lock member is disengaged from said actuating member such that said actuating member is permitted said second movement.

5. The clip applier of claim 4, wherein said actuating member has a tab and said locking member has a plurality of recesses, said tab being operably retained within one of said recesses in said locked condition and said tab being disengaged from the recess in which it is located in said unlocked condition.

6. The clip applier of claim 5, wherein a plurality of said grooves are disposed along a path of movement of said second movement of said actuation member.

7. The clip applier of claim 2, further comprising a reset member driving said actuating member in said third movement to switch said actuating member from said unlocked state to said locked state and remain in said locked state.

8. The clip applier of claim 7, wherein said return member comprises a resilient member.

9. The clip applier of claim 1, wherein said drive mechanism comprises a steering rod assembly including pivotally connected first and second links, and a transmission assembly that moves to move said second link in response to a force applied to said transmission assembly by said actuator, thereby moving said first link to drive said end effector to rotate relative to said shaft assembly.

10. The clip applier of claim 9, wherein said end effector is pivotally coupled to said shaft assembly by a swivel member having one end pivotally coupled to said shaft assembly and the other end pivotally coupled to said end effector.

11. The clip applier of claim 10, wherein said first link acts on said rotating member.

12. The clip applier of claim 10, wherein said swivel is coupled to said shaft assembly via a first pivot point, said first link is coupled to said swivel via a second pivot point, said first pivot point is non-coincident with said second pivot point.

13. The clip applier of claim 1, wherein in response to a force applied to said clip, said clip is delivered from said clip cartridge to said end effector such that said end effector applies said clip to a gripped object.

14. The clip applier of any one of claims 1, 13, wherein said end effector is pivotally connected to said shaft assembly by a swivel member, said clip cartridge being removably disposed on said swivel member; the rotating member includes a channel through which the clip is delivered from the clip cartridge to the end effector.