CN114366226B

CN114366226B - Clip applier and method for driving clip bin shaft thereof

Info

Publication number: CN114366226B
Application number: CN202011105221.7A
Authority: CN
Inventors: 徐荣华; 沈清
Original assignee: Suzhou IntoCare Medical Technology Co Ltd
Current assignee: Suzhou IntoCare Medical Technology Co Ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2023-03-28
Anticipated expiration: 2040-10-15
Also published as: CN114366226A

Abstract

The invention belongs to the technical field of medical instruments, particularly relates to the field of surgical instruments, and provides a clip applier and a driving method of a clamping bin shaft of the clip applier. The clip applier is provided with a connecting state that the driving shaft and the clip bin shaft form a separable driving connection, and the separable driving connection is that the movement of the driving shaft can drive the clip bin shaft to move in the far and near directions in a bidirectional mode and can be separated selectively. On one hand, the bin clamping shaft and the driving shaft form selectable separated connection, and the bin clamping shaft can adapt to the plug-in connection of the bin clamping assembly and the adapter; on the other hand, the drive connection that presss from both sides storehouse axle and drive shaft formation makes the motion of drive shaft can drive and presss from both sides the storehouse axle along far and near direction both way movement, so, when needs press from both sides the storehouse axle to reply initial position from the distal end, the motion of drive shaft can directly pull back the storehouse axle of pressing from both sides to initial position, compares in prior art's the piece that resets through, and this scheme pulls back the effect stable, reliable, has avoided the problem of the unable percussion once more that leads to because pressing from both sides the storehouse axle and can't reset.

Description

Clip applier and method for driving clip bin shaft thereof

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to the field of surgical instruments.

Background

Surgical clip appliers are commonly used to clip tubular tissue during surgery, thereby avoiding fluid seepage within the tubular tissue.

Generally, the clip applier comprises a cartridge assembly and an adapter, wherein the cartridge assembly is connected with the adapter in a plugging manner, and when the cartridge assembly and the adapter are plugged, a cartridge shaft of the cartridge assembly is abutted to a driving shaft of the adapter. The clip magazine shaft needs to be moved distally under the urging of the drive shaft to deliver clips toward the jaws and to close the jaws after delivery to fire the clips. After the trigger, the clip cabin shaft is abutted against the driving shaft, so that the clip cabin shaft can only rely on the reset force of the spring to reset towards the near end side, which may cause the reset failure, and further cause the clamp to be incapable of returning to the open state and being incapable of triggering again.

Disclosure of Invention

Technical problem to be solved

In order to solve the above problems of the prior art, the present invention provides a clip applier and a clip magazine shaft driving method thereof, which can reliably drive a clip magazine shaft to reset.

(II) technical scheme

In order to achieve the purpose, the invention adopts the main technical scheme that:

the invention provides a clip applier which comprises a clip bin assembly and an adapter, wherein the clip bin assembly and the adapter are detachably connected together, the clip bin assembly is provided with a clip bin shaft, the adapter is provided with a driving shaft, the clip applier is provided with a connection state that the driving shaft and the clip bin shaft form separable driving connection, and the separable driving connection is that the driving shaft can move in the far and near directions in a bidirectional mode and can be separated selectively.

Preferably, when the drive shaft and the cartridge shaft are in the connected state: the driving shaft is directly in threaded connection with the bin clamping shaft; or the driving shaft is in threaded connection with a connecting piece connected to the clamping bin shaft, and the connecting piece can convert the bidirectional nonlinear motion of the driving shaft into the bidirectional movement of the clamping bin shaft along the far and near directions.

Preferably, the clip applier further has an initial state in which the drive shaft and the clip cartridge shaft are separated; the adapter has a drive mechanism which is connected to the drive shaft and is capable of driving the drive shaft in a bidirectional manner between an initial position in which it is separated from the magazine shaft and a connection position in which it forms a detachable driving connection with the magazine shaft.

Preferably, the drive mechanism selectively drives the drive shaft to move in a bidirectional rotation manner and selectively drives the drive shaft to move in a bidirectional manner in the far-near direction, and the far end of the drive shaft is directly connected with the near end of the cartridge chamber shaft in a threaded manner; or the driving mechanism can only selectively drive the driving shaft to do bidirectional rotation movement, the far end of the driving shaft is in threaded connection with a connecting piece connected to the near end of the cartridge chamber shaft, and the connecting piece can convert the bidirectional rotation movement of the driving shaft into the bidirectional movement of the cartridge chamber shaft along the far and near directions.

Preferably, the drive shaft comprises an externally threaded section; the driving mechanism comprises a first driving piece and a first driving piece driving device which are rotatably fixed in the adapter, the first driving piece and the driving shaft form rotating driving, the driving shaft is connected with the first driving piece in an axially movable mode, and the first driving piece driving device is connected with the first driving piece to drive the first driving piece to rotate; the driving mechanism further comprises a second driving piece and a second driving piece driving device, wherein the second driving piece and the second driving piece driving device are rotatably fixed in the adapter, the second driving piece is provided with a threaded hole, the threaded hole is meshed with the external thread section of the driving shaft, and the second driving piece driving device is connected with the second driving piece so as to drive the second driving piece to rotate; the first driving piece driving device and the second driving piece driving device can selectively work alternatively.

Preferably, the adapter is provided with a driving mechanism, the driving mechanism is connected with the driving shaft and can selectively drive the driving shaft to rotate in two directions, the connecting piece comprises a screw rod and a nut screwed on the screw rod, the near end of the screw rod is in threaded connection, magnetic connection or clamping connection with the far end of the driving shaft, and the nut is connected with the bin clamping shaft; or the adapter is provided with a driving mechanism which is connected with the driving shaft and can selectively drive the driving shaft to move in two directions along the far and near directions, and the far end of the bin clamping shaft is in threaded connection, magnetic connection or clamping connection with the near end of the driving shaft; or the adapter is provided with a driving mechanism which is connected with the driving shaft and can selectively drive the driving shaft to rotate and move in two directions, the connecting piece comprises a near-end seat, a far-end seat and a plurality of rolling pieces limited between the near-end seat and the driving shaft, the near-end seat is in threaded connection, magnetic connection or clamping connection with the driving shaft, and the far-end seat is fixedly connected with the bin clamping shaft.

Preferably, the cartridge assembly comprises an impact resistant structure which applies a force to the cartridge shaft towards the drive shaft during the formation of the connection between the drive shaft and the cartridge shaft.

Preferably, the cartridge assembly further comprises a tube body, and the proximal end of the cartridge shaft is inserted into the tube body; the anti-impact structure is a reset piece arranged between the bin clamping shaft and the tube body, the reset force of the reset piece faces to the direction of the driving shaft, or the anti-impact structure is an elastic stop piece fixed on the inner wall of the tube body, and the bin clamping shaft is abutted to the elastic stop piece.

Preferably, the cartridge assembly further comprises a tube body, and the proximal end of the cartridge shaft is inserted into the tube body; the near end of the tube body is provided with a near end limiting structure, and the near end limiting position of the clamping bin shaft is limited by stopping the near end of the clamping bin shaft or the connecting piece.

The invention also provides a cabin clamping shaft driving method adopting the clip applier, which comprises a cabin clamping shaft propelling step and a cabin clamping shaft pulling step: the bin clamping shaft propelling step comprises: the driving shaft is connected with the bin clamping shaft, and the driving shaft drives the bin clamping shaft to move towards the far end side; a bin clamping shaft pulling step: the driving shaft and the clamping bin shaft are in a connected state, and the driving shaft drives the clamping bin shaft to move towards the near-end side.

(III) advantageous effects

The invention has the beneficial effects that:

according to the clip applier and the driving method of the clamping bin shaft, the driving shaft and the clamping bin shaft can form a separable driving connection state, on one hand, the clamping bin shaft and the driving shaft form separable connection, and the clamping bin shaft can adapt to the plug-in connection of the clamping bin assembly and the adapter; on the other hand, the driving connection formed by the bin clamping shaft and the driving shaft can drive the bin clamping shaft to move in both directions along the far and near directions through the movement of the driving shaft, so that when the bin clamping shaft needs to return to the initial position from the far end, the bin clamping shaft can be directly pulled back to the initial position through the movement of the driving shaft.

Drawings

FIG. 1 is a schematic, partially cross-sectional view of a clip applier provided in accordance with a first embodiment, showing primarily the configuration of the adapter and cartridge assembly with respect to the connection of the drive shaft to the cartridge shaft;

FIG. 2 is a schematic, partially cross-sectional view of a clip applier provided in accordance with a second embodiment, showing primarily the configuration of a cartridge shaft drive in the cartridge assembly;

FIG. 3 is a schematic, partially cross-sectional view of a clip applier provided in accordance with a third embodiment, showing primarily the structure of a cartridge magazine shaft drive in the cartridge magazine assembly;

FIG. 4 is a schematic drawing in partial cross-section of a clip applier provided in accordance with a fourth embodiment, showing primarily the structure of the cartridge shaft drive in the cartridge assembly;

FIG. 5 is a schematic drawing in partial cross-section of a clip applier provided in accordance with a fifth embodiment, showing primarily the structure of the cartridge shaft drive in the cartridge assembly;

FIG. 6 is a schematic partial cross-sectional view of a clip applier provided in accordance with a seventh embodiment, showing primarily the configuration of the attachment elements;

fig. 7 is a partial schematic view of a clip applier provided in accordance with an eighth embodiment, showing a connection of a drive shaft to a first drive member.

[ description of reference ]

1: a cartridge assembly; 101: a bin clamping shaft; 102: a connecting member; 103: a screw; 104: a second driving member; 105: a proximal seat; 106: a distal hub; 107: a rolling member; 108: an elastic stopper; 109: a pipe body; 110: a proximal stop structure; 111: a first reset member; 112: a second reset member; 113: a third reset member; 114: enlarging the head; 115: a small end; 116: clamping the elastic buckle; 117: a magnet;

2: an adapter; 201: a drive shaft; 202: an external threaded section; 203: a first driving member; 204: a first driver; 205: a transmission gear; 206: a nut; 207: a pipe body; 208: a square section; 209: a second driver; 210: a bevel gear; 211: a locking groove; 212: a magnet; 213: a convex rib; 214: and (4) a groove.

Detailed Description

For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings. Wherein "proximal" and "distal" are used herein to define: the direction from the doctor to the patient in use is from the near to the far direction.

Example one

As shown in FIG. 1, the present embodiment provides a clip applier comprising a clip cartridge assembly 1 and an adapter 2 that are removably insertable together.

In the present embodiment, the cartridge assembly 1 comprises a cartridge shaft 101, a tube 109, a clip pushing mechanism, a firing mechanism, a first reset member 111, a second reset member 112 and a third reset member 113.

The tube 109 may be an integral housing of the cartridge assembly 1, or may be a separate housing located at the proximal end, or may be a component inside the proximal housing, the tube 109 itself may be an integral piece, or may be a separate piece, and one of the functions of the tube 109 is to provide a limiting structure on its inner wall to limit the moving position of the moving component.

The cartridge shaft 101 may be an integral component or an assembly formed by connecting a plurality of separate components, and in this embodiment, the cartridge shaft 101 is an integral component or an assembly that moves in both directions (i.e., in a direction from the proximal end to the distal end and in a direction from the distal end to the proximal end). The proximal end of the cartridge shaft 101 is inserted into the tube 109, and the push-clamp mechanism and firing mechanism are at least partially located within the tube 109. The clip pushing mechanism is used for sending clips to the clips at the far end of the clip applier, and the firing mechanism is used for controlling the clips to be closed and opened and firing the clips when the clips are closed. The clamping bin shaft 101 is connected with the pushing and clamping mechanism and the firing mechanism, and the pushing and clamping mechanism and the firing mechanism are driven to work at least through the movement of the clamping bin shaft 101. Specifically, before the clip applier is operated, the clip bin shaft 101 is located at an initial position near the clip bin shaft; when the clip applier works, the clip bin shaft 101 moves towards the far end direction from the near end initial position of the clip bin shaft, the clip pushing mechanism is driven to move towards the far end direction in the moving process (the position when the clip bin shaft 101 starts to act on the clip pushing mechanism is the clip sending position) until the clip at the far end is sent to the clip, the firing mechanism is driven to move towards the far end direction (the position when the clip bin shaft 101 starts to act on the firing mechanism is the firing position) until the clip is closed, and firing is formed. In summary, the position where the cartridge shaft 101 pushes the clip pushing mechanism to start moving is located on the far side of the initial position of the proximal end of the cartridge shaft, the position where the cartridge shaft 101 pushes the firing mechanism to start moving is located on the far side of the position where the cartridge shaft 101 pushes the clip pushing mechanism to start moving, and the position where the cartridge shaft 101 stops driving the firing mechanism is the distal end position of the cartridge shaft. Therefore, the working process of the clip cabin shaft 101 is the reciprocating movement between the initial position of the near end of the clip cabin shaft and the terminal position of the far end of the clip cabin shaft, namely the bidirectional movement along the far and near directions. The pushing and clamping mechanism and the firing mechanism can adopt structures in the prior art, are not innovative in the invention, and therefore, the pushing and clamping mechanism and the firing mechanism are not described in detail.

The first reset piece 111 is sleeved on the bin clamping shaft 101 and located between the bin clamping shaft 101 and the tube body 109, and the reset force direction of the first reset piece 111 is towards the far end. A large-diameter step is formed at the proximal end of the bin clamping shaft 101, so that a groove 214 or an end face connected with one end of the first resetting piece 111 is formed; the inner wall of the tube 109 is formed with a limiting surface against which the other end of the first reset piece 111 abuts. Thereby, the first restoring member 111 can be deformed in the axial direction of the cartridge shaft 101 and generate a restoring force. The first reset member 111 is configured to accumulate force when the magazine shaft 101 moves in the distal direction, and to provide an auxiliary reset function when the magazine shaft 101 moves in the proximal direction (the structure that plays the main reset function will be described in detail later); on the other hand, the anti-impact structure is formed, and during the process of forming the connection between the driving shaft 201 and the cartridge shaft 101, the first reset member 111 provides a force to the cartridge shaft 101 towards the driving shaft 201, and resists the impact force generated during the process of forming the driving connection of the driving shaft 201 (the driving connection will be described in detail later). The stored force and the impact resistance may be a deformation force generated by compression or a deformation force generated by tension, and the first restoring member 111 may be a tension spring, a compression spring, a rubber member, or the like.

The second reset piece 112 is arranged between the pushing and clamping mechanism and the bin clamping shaft 101, stores force in the process that the bin clamping shaft 101 moves from the initial position of the near end of the bin clamping shaft to the final position of the far end of the bin clamping shaft, and drives the pushing and clamping mechanism to reset in the process that the bin clamping shaft 101 moves from the final position of the far end of the bin clamping shaft to the initial position of the near end of the bin clamping shaft. The stored force may be a deformation force generated by compression or a deformation force generated by tension. The second restoring member 112 may be a tension spring, a compression spring, a rubber member, or the like. Preferably, the distal end of the cartridge shaft 101 is provided with a receiving cavity, the second resetting member 112 is partially located in the receiving cavity, the pushing and clamping mechanism is connected to the opening of the receiving cavity, and the second resetting member 112 is connected to the pushing and clamping mechanism.

The third reset piece 113 is arranged between the firing mechanism and the tube body 109 or between the firing mechanism and the cartridge shaft 101, stores force in the process that the cartridge shaft 101 moves from the proximal initial position of the cartridge shaft to the distal end position of the cartridge shaft, and drives the firing mechanism to reset in the process that the cartridge shaft 101 moves from the distal end position of the cartridge shaft to the proximal initial position of the cartridge shaft. The stored force may be a deformation force generated by compression or a deformation force generated by stretching, and the third restoring member 113 may be a tension spring, a compression spring, a rubber member, or the like.

When the adapter 2 and the cartridge assembly 1 are just inserted, the cartridge shaft 101 is located at the initial position of the proximal end of the cartridge shaft, which may be the limit position of the proximal end side of the cartridge shaft 101 formed by the proximal limit structure 110 formed on the inner wall of the tube 109 stopping the proximal end of the cartridge shaft 101, but may also be not the limit position of the proximal end side but only the position of the cartridge shaft 101 in the natural state when the adapter 2 and the cartridge assembly 1 are inserted, at this time, since the cartridge shaft 101 is in the free state when the adapter 2 and the cartridge assembly 1 are just inserted, the initial position of the proximal end of the cartridge shaft is not strictly defined as a certain position, and may have some movement in the axial direction.

With further reference to fig. 1, the adapter 2 may be a device that includes a handle portion or may be separate from the handle, and is not limited in this disclosure. The adapter 2 in this embodiment comprises a tube 207, a drive shaft 201 and a drive mechanism.

The tube 207 may be the housing of the adapter 2 or may be a component fixed in the housing of the adapter 2.

The proximal end of the drive shaft 201 is inserted into the tube 207 and the drive mechanism is located within the housing of the adapter 2. The driving mechanism is connected to the driving shaft 201, and selectively drives the driving shaft 201 to rotate and move in the proximal and distal directions simultaneously, i.e., to rotate forward and rotate backward, wherein the driving shaft may be rotated clockwise to advance or may be rotated counterclockwise to advance. Thereby, the bidirectional motion of the drive shaft 201 is bidirectional rotational movement. Moreover, the driving mechanism can also drive the driving shaft 201 to move only in the two directions in the far and near directions without rotating, i.e. the driving shaft 201 has another motion state, i.e. two-way movement. Thus, the drive mechanism provides two states of motion of the drive shaft 201, one of which may be selected for use as desired.

Specifically, the drive mechanism includes both the first drive mechanism and the second drive mechanism as follows.

The first drive mechanism comprises a first drive member 203, a first drive member driver 204 and a drive gear 205. The first drive member 203 passes through the tubular body 207, the tubular body 207 providing an axial stop for the first drive member 203 but not a circumferential stop, thereby rotatably securing the first drive member 203 within the adapter 2. The first driving member driver 204 is fixed outside the tube 207, and the transmission gear 205 is rotatably supported outside the tube 207, and since the transmission gear is used to transmit motion, the first driving member 203 in this embodiment is selected from a gear to mesh with the transmission gear 205. In this embodiment, the first driving member driver 204 can be a motor or an electric motor, an output shaft of the first driving member driver 204 rotates, and the transmission gear 205 is fixedly sleeved on the output shaft and rotates along with the rotation of the output shaft. The proximal end of the drive shaft 201 is formed with a square section 208, and the bore of the first drive member 203 is configured as a square bore through which the first drive member 203 is movably sleeved on the square section 208 of the drive shaft 201. Therefore, when the transmission gear 205 drives the first driving part 203 on the driving shaft 201 to rotate, the first driving part 203 drives the driving shaft 201 to rotate through the square hole thereof, and rotary driving is formed between the first driving part 203 and the driving shaft 201; meanwhile, under the action of the external force, the driving shaft 201 can move axially relative to the first driving member 203 because the first driving member 203 is immovable, and the square hole of the first driving member 203 corresponds to a guide rail. In summary, in the present embodiment, the first driver 204 and the transmission gear 205 constitute a first driver driving device.

While the middle of the drive shaft 201 is provided with an externally threaded section 202, i.e. the externally threaded section 202 is located at the distal side of the square section 208 of the drive shaft 201. In this embodiment, the second drive mechanism comprises a second drive member 206, two bevel gears 210 and a second drive member driver 209. The second drive member 206 has a threaded bore through which the second drive member 206 is screwed into the externally threaded section 202 of the drive shaft 201, while the second drive member 206 is rotatably fixed in the body 207 of the adapter 2 by means of bearings. In this embodiment, the axis of the output shaft of the second driver 209 is perpendicular to the axis of the drive shaft 201, and the rotation of the second driver 209 is transmitted to the second driver 206 by two bevel gears 210, i.e. one of the two meshing bevel gears 210 is fixed to the output shaft of the second driver 209 and the other is fixed to the second driver 206, thereby transmitting the rotation of the second driver 209 to the second driver 206, it being understood that in this embodiment, the second driver 206 is a nut. In summary, in the present embodiment, the second driver 209 and the two bevel gears 210 constitute a second driver driving means.

The first drive mechanism and the second drive mechanism can be operated independently, i.e. the first drive element drive and the second drive element drive can be operated alternatively. When the second driving member driving means is not operated, the second driving member 206 is neither rotatable nor movable, and a threaded passage is formed by a threaded hole in the second driving member 206. The first driving part driving device works, the first driving part 203 drives the driving shaft 201 to rotate through the square hole of the first driving part, the driving shaft 201 moves while rotating due to the existence of a threaded channel formed by the fixed second driving part 206, and therefore, the rotary movement is formed, and meanwhile, the first driving part driving device can drive the first driving part 203 to rotate in the positive direction and the negative direction, so that the bidirectional rotary movement is formed. When the first driving member driving device does not work and the second driving member driving device works, the second driving member driving device drives the driving shaft 201 to move linearly through the second driving member 206, and the square hole of the first driving member 203 does not limit the driving shaft 201 on the linear movement, so that the driving shaft 201 only moves linearly at this time. Since the second driving member driving device can drive the second driving member 206 to rotate bidirectionally, the driving shaft 201 can move linearly in both directions.

Thus, by the above-mentioned cooperative arrangement and operation of the first driving mechanism and the second driving mechanism, two motion states of the driving shaft 201 between the bidirectional rotational movement and the bidirectional linear movement are realized. Of course, the above-mentioned cooperating arrangement is focused on: the first driving part 203 and the driving shaft 201 are driven to rotate and can move axially, the second driving part 206 and the driving shaft 201 are connected through threads, the second driving part 206 can only rotate but cannot move, and therefore the driving shaft 201 can have two motion states of bidirectional rotation movement and bidirectional linear movement ingeniously, and a complex switching mechanism is not needed. And how to selectively drive the second driving member 206 to rotate bidirectionally and how to selectively drive the first driving member 203 to rotate bidirectionally can be accomplished by any means commonly used in the art. For example, the single transmission gear 205 is changed to a gear set or a chain set of chain wheels, and when the chain set of chain wheels is selected, the first driving member is a chain wheel; for example, by changing the direction of the output shaft of the second driver 209 to be parallel to the axial direction of the drive shaft 201, instead of the bevel gear 210, other gearing means such as gears, chains or the like may be used, and the second driver may be directly a gear wheel with a threaded bore therein.

Further, since the drive shaft 201 can move while rotating, the distal end of the drive shaft 201 can be directly threadedly coupled to the proximal end of the cartridge shaft 101. Specifically, the distal end of the drive shaft 201 is provided with an externally threaded end. The proximal end of the cartridge shaft 101 includes an enlarged head 114 and a small head 115 connected, the small head 115 being located on the proximal side of the enlarged head 114. A threaded bore is provided in the proximal face of small head 115 and extends all the way to large head 114. The threaded hole is in threaded connection with the external threaded end, thereby forming a direct threaded connection of the drive shaft 201 with the cartridge shaft 101. The inner wall of the proximal end of the tube 109 is arranged in a step shape matching with the large head 114 and the small head 115 to form a proximal limit structure 110, and the proximal limit position of the cartridge shaft 101 is limited by stopping the proximal end surface of the large head 114 of the cartridge shaft 101.

Of course, it is also possible to provide a threaded bore at the distal end of the drive shaft 201 and an externally threaded end at the proximal end of the cartridge shaft 101, but in this case it is desirable that the distal end of the drive shaft 201 has a larger diameter and the insertion passage of the drive shaft 201 in the cartridge assembly 1 has a larger diameter. Therefore, the distal end of the driving shaft 201 is set to be a threaded section, so that the structural design of the whole adapter 2 and the cartridge assembly 1 is more reasonable.

Thus, when the adapter 2 and the cartridge assembly 1 are just inserted, the driving shaft 201 is at the driving shaft proximal end initial position, the cartridge shaft 101 is at the cartridge shaft proximal end initial position, and the distal end of the driving shaft 201 is axially spaced from the proximal end of the cartridge shaft 101, i.e. the driving shaft 201 is separated from the cartridge shaft 101, and the two are in the initial state. The initial proximal position of the drive shaft may be the limit position of the drive shaft 201 on the proximal side, or the position of the drive shaft 201 in the natural state when the adapter 2 and the cartridge assembly 1 are plugged together, rather than the limit position. If drive shaft 201 and clip storehouse axle 101 form the connection when adapter 2 and clip storehouse subassembly 1 plug, then this connection can form the resistance to the plug connection of adapter 2 and clip storehouse subassembly 1, consequently for adapter 2 and the plug that clip storehouse subassembly 1 is more smooth, and only need simple direct to inserting can realize the connection dismantled of the two, so let drive shaft 201 and clip storehouse axle 101 contactless when respective near-end initial position.

When the bin clamping shaft 101 needs to be driven to move towards the distal direction, the driving shaft 201 needs to be connected with the bin clamping shaft 101, at this time, the first driving piece driver 204 drives the first driving piece 203 to rotate along one direction, the driving shaft 201 rotates and advances towards the distal direction from the initial position of the near end of the driving shaft to meet the bin clamping shaft 101 at the initial position of the near end of the bin clamping shaft, and the driving shaft 201 reaches the connecting position where the threaded connection with the bin clamping shaft 101 is completed along with the threaded engagement with the bin clamping shaft 101. The threaded connection depth can be the connection between all the threads at the distal end of the driving shaft 201 and the cartridge shaft 101, or the connection between all the threads at the proximal end of the cartridge shaft 101 and the driving shaft 201, or the preset travel distance of the driving shaft 201, and finally the connection state is formed. After the driving shaft 201 is connected with the cartridge shaft 101, the movement mode of the driving shaft 201 is switched, the second driving element driver 209 drives the second driving element 206 to rotate along one direction, and the driving shaft 201 moves linearly instead. When the driving shaft 201 moves linearly to the distal end position of the driving shaft, the cartridge shaft 101 is pushed by the driving shaft 201 to the distal end position of the cartridge shaft, and the driving shaft 201 and the cartridge shaft 101 are kept connected.

When the driving shaft 201 meets the cartridge shaft 101, a force toward the distal direction is applied to the cartridge shaft 101 in the process of screwing the driving shaft 201 with the cartridge shaft 101, and at this time, the first restoring member 111 in the pre-tightening state provides a force toward the driving shaft 201 to the cartridge shaft 101, so as to resist an impact force generated by the driving connection of the driving shaft 201 and prevent the driving shaft 201 from moving greatly. It can be understood that when the driving shaft 201 is required to push the magazine clamping shaft 101 to advance, the acting force of the driving shaft 201 on the magazine clamping shaft 101 is increased by the driving of the second driving member 206, so that the magazine clamping shaft 101 can be pushed to move linearly.

After the work is finished when the distal end termination position of the cartridge shaft is reached, the second driving element driver 209 drives the second driving element 206 to rotate along the other direction, when the driving shaft 201 moves from the distal end termination position of the driving shaft to the proximal end direction, the driving shaft 201 pulls the cartridge shaft 101 proximally to the proximal end initial position of the cartridge shaft, then the first driving element driver 204 drives the first driving element 203 to rotate along the other direction, the driving shaft 201 rotates and retreats to the proximal end initial position of the driving shaft, and the driving shaft 201 and the cartridge shaft 101 are separated and return to the initial state. In the process of separating the driving shaft 201 from the cartridge shaft 101, the cartridge shaft 101 abuts against the proximal limiting structure 110, so that the separation of the cartridge shaft and the driving shaft 201 is smoother.

Thus, the cartridge shaft 101 is movable between a cartridge shaft proximal end initial position and a cartridge shaft distal end final position upon actuation of the drive shaft 201. The distal end position of the driving shaft 201 is not limited to the distal limit position of the driving shaft 201, and the absolute position of the distal end position of the driving shaft 201 may be changed according to actual use, so that the absolute position of the distal end position of the cartridge shaft may also be changed, which is not limited herein.

In summary, the driving mechanism can drive the driving shaft 201 to move in two directions between an initial position separated from the magazine shaft 101 and a connection position in driving connection with the magazine shaft 101 (at this stage, the movement of the driving shaft 201 is a rotational movement), and can drive the driving shaft 201 to move in two directions linearly to drive the magazine shaft 101 to perform a pushing and clamping operation, a firing operation, and a pulling operation of the magazine shaft 101 to the initial position (at this stage, the movement of the driving shaft 201 is a linear movement). Meanwhile, as the threaded connection is stable, the stable connection between the driving shaft 201 and the bin clamping shaft 101 can be realized only by small-section threaded connection, and the driving shaft 201 can drive the bin clamping shaft 101 to move smoothly in two directions from the near end to the far end and from the far end to the near end.

It will be appreciated that in looking at the connection between the drive shaft 201 and the cartridge shaft 101, the expression may be "the drive mechanism is capable of driving the drive shaft 201 in both directions between an initial position spaced from the cartridge shaft 101 and a connected position forming a separable driving connection with the cartridge shaft 101", which expression indicates that the drive mechanism has at least the ability to drive the drive shaft from the initial position to the connected position and from the connected position to the initial position, and that the drive mechanism may also perform the function of driving the drive shaft to other positions, as desired. Similar expressions are understood similarly, and are not described in detail.

Further, inductive switches may be provided at one or more of the proximal initial position, the connection position, the clip feeding position, the firing position, and the distal end position to facilitate obtaining the position of the drive shaft 201 and/or the clip cartridge shaft 101. Further, when a position with an inductive switch is reached, the advancement or retraction of the drive shaft 201 may be halted, resulting in a discontinuous motion.

Based on the above description of the clip applier, the clip magazine shaft driving method of the clip applier, including the clip magazine shaft advancing step and the clip magazine shaft retracting step, is described as follows.

The bin clamping shaft pushing step comprises the following steps:

s11, when the adapter 2 is connected with the cartridge assembly 1, the driving shaft 201 is located at the initial position of the near end of the driving shaft, the cartridge shaft 101 is located at the initial position of the near end of the cartridge shaft, and the driving shaft 201 is separated from the cartridge shaft 101. The second driving element driver 209 in the second driving mechanism is not started, the first driving element driver 204 in the first driving mechanism is started, the first driving element 203 rotates in one direction, the driving shaft 201 rotates and advances towards the far end direction to meet the clamping bin shaft 101 at the initial position of the near end of the clamping bin shaft, and the first driving element driver 204 stops until the driving shaft 201 and the clamping bin shaft 101 form a connection state along with the advancing screw thread screwing.

And S12, starting a second driving piece driver 209 in the second driving mechanism, rotating a second driving piece 206 in one direction, driving the driving shaft 201 to move linearly towards the distal end position of the driving shaft, then pushing the bin clamping shaft 101 to move from the proximal initial position of the bin clamping shaft to the distal end position of the bin clamping shaft by the driving shaft 201, keeping the driving shaft 201 and the bin clamping shaft 101 in a connected state after the bin clamping shaft 101 leaves the proximal initial position of the bin clamping shaft, and stopping the second driving piece driver 209 when the driving shaft 201 reaches the distal end position of the driving shaft.

The bin clamping shaft pulling step comprises:

and S21, starting the second driving piece driver 209, driving the second driving piece to rotate along the second direction, further driving the driving shaft 201 located at the distal end termination position of the driving shaft to linearly move towards the proximal direction, driving the driving shaft 201 to drive the bin clamping shaft 101 located at the distal end termination position of the bin clamping shaft to linearly move towards the proximal direction until the bin clamping shaft 101 is pulled back to the proximal end initial position of the bin clamping shaft, and stopping the second driving piece driver 209. In this process, the drive shaft 201 and the cartridge shaft 101 are kept connected.

S22, the first driving member driver 204 is started, the first driving member 203 rotates in the other direction, and the driving shaft 201 is driven to rotate in the proximal direction, so as to separate from the magazine shaft 101. When the drive shaft 201 reaches the drive shaft proximal end initial position, the first driver 204 stops.

Therefore, the driving shaft 201 and the bin clamping shaft 101 can form a separable driving connection state, on one hand, the bin clamping shaft 101 and the driving shaft 201 form separable connection, and the plug-in connection of the bin clamping assembly 1 and the adapter 2 is adapted; on the other hand, pressing from both sides storehouse axle 101 and drive shaft 201 and forming the drive connection, the motion of drive shaft 201 can drive and press from both sides storehouse axle 101 along far and near direction both way junction, so, when needs press from both sides storehouse axle 101 and reply initial position from the distal end, the motion of drive shaft 201 can directly pull back to initial position with pressing from both sides storehouse axle 101, compare in prior art and reset through the piece that resets, this embodiment pulls back the effect stable, reliable, avoided the problem that can't fire again because pressing from both sides the unable reset that leads to of storehouse axle 101. Meanwhile, in other positions except the initial position, due to the threaded connection between the cartridge shaft 101 and the driving shaft 201, the cartridge assembly 1 and the adapter 2 are locked along with the cartridge shaft 101 and the driving shaft 201 (of course, other locking mechanisms can be arranged between the cartridge assembly 1 and the adapter 2), the cartridge assembly 1 cannot be pulled out, and the stability of the mechanism operation and the safety of a user are protected. Moreover, when the adapter 2 of the clip applier is plugged into the clip bin assembly 1, the clip bin shaft 101 and the driving shaft 201 are still in a separated state, so that the resistance of a connecting structure between the two to plugging is removed, and the plugging is smoother.

Example two

Referring to fig. 2, the present embodiment is mainly modified based on the first embodiment:

the first reset piece 111 is eliminated, and the following impact-resistant structure is added; or an impact-resistant structure described below is added to the first restoring member 111.

The impact-resistant structure is as follows: an elastic stop member 108 is fixed to the inner wall of the tube 109, and the cartridge shaft 101 is pressed against the elastic stop member 108. For example, the elastic stop 108 is a snap elastically supported in the inner wall of the tube 109, and the cartridge shaft 101 is provided with a flange (in this embodiment, the distal end portion of the large head 114 in the cartridge shaft 101 forms a flange), and the flange is pressed against the elastic stop 108 in the process of the separation state and the process of entering the connection state from the separation state, that is, the driving shaft 201 does not apply enough force to the cartridge shaft 101 to move the elastic stop 108 towards the inner wall of the tube 109 and release the blocking of the cartridge shaft 101 in the process of entering the connection state from the separation state to the connection state with the cartridge shaft 101. When the driving shaft 201 continues to drive the cartridge shaft 101 to move linearly toward the clipping position, the driving force of the driving shaft 201 is enough to make the elastic stopper 108 move toward the inner wall of the tube 109 without stopping the cartridge shaft 101. Preferably, the outer surface of the snap is spherical and the surface of the flange facing the snap forms a surface inclined in the proximal direction.

Preferably, a plurality of elastic stops 108 are uniformly arranged around the axis of the cartridge shaft to ensure force stability.

EXAMPLE III

Referring to fig. 3, the present embodiment is mainly modified based on the first embodiment: the threaded connection is changed into the magnetic connection. Of course, the screw connection in the second embodiment can be changed to the magnetic connection, and the improvement on the first embodiment is taken as an example here.

In this embodiment, the magnet 212 is disposed at the distal end of the drive shaft 201, the magnet 117 is disposed at the proximal end of the cartridge shaft 101, and the magnet 117 and the magnet 212 are attracted to each other. At this time, the driving mechanism is no longer required to drive the driving shaft 201 to rotate and advance to realize the threaded connection, so that the first driving mechanism can be eliminated for simplifying the structure, and the driving shaft 201 and the bin clamping shaft 101 can be connected and driven only by the second driving mechanism to drive the driving shaft 201 to move in the far and near directions in a bidirectional mode.

In addition, due to the arrangement of the first reset piece 111, an auxiliary effect is provided for the driving shaft 201 to pull back the clip cartridge shaft 101 through magnetic attraction, so that the driving shaft 201 and the clip cartridge shaft 101 can be stably kept engaged in the pulling back process. When the driving shaft 201 pulls the cartridge shaft 101 back to the proximal initial position, the driving shaft 201 moves further in the proximal direction, and the cartridge shaft 101 is stopped by the proximal limiting structure 110 on the tube 109, so that the driving shaft 201 is separated from the cartridge shaft 101.

The bin clamping shaft pushing step comprises the following steps:

s11, when the adapter 2 is connected with the cartridge assembly 1, the driving shaft 201 is located at the initial position of the near end of the driving shaft, the cartridge shaft 101 is located at the initial position of the near end of the cartridge shaft, and the driving shaft 201 is separated from the cartridge shaft 101. The second driving member driver in the second driving mechanism is started, the second driving member rotates in one direction, the driving shaft 201 is driven to linearly advance towards the far end direction to meet the clip bin shaft 101 at the initial position of the near end of the clip bin shaft, and the driving shaft 201 and the clip bin shaft 101 form a connection state.

S12, the second driving piece driver in the second driving mechanism continues to drive the second driving piece to rotate, the driving shaft 201 is driven to move linearly towards the far end position of the driving shaft, the driving shaft 201 then pushes the bin clamping shaft 101 to move from the initial position of the near end of the bin clamping shaft to the final position of the far end of the bin clamping shaft, after the bin clamping shaft 101 leaves the initial position of the near end of the bin clamping shaft, the driving shaft 201 and the bin clamping shaft 101 are kept in a connected state, and when the driving shaft 201 reaches the final position of the far end of the driving shaft, the second driving piece driver stops.

The bin clamping shaft pulling step comprises:

and S21, starting a driver of the second driving piece, driving the second driving piece to rotate along the other direction, driving the driving shaft 201 located at the far end termination position of the driving shaft to linearly move towards the near end direction, driving the driving shaft 201 to drive the cabin clamping shaft 101 located at the far end termination position of the cabin clamping shaft to linearly move towards the near end direction, and pulling the cabin clamping shaft 101 back to the near end initial position of the cabin clamping shaft. In this process, the drive shaft 201 and the cartridge shaft 101 are kept connected.

S22, the second driving piece driver continues to drive the second driving piece to rotate, the driving shaft 201 is driven to move towards the proximal direction, the bin clamping shaft 101 is blocked by the proximal limiting structure, and the driving shaft 201 is separated from the bin clamping shaft 101. When the drive shaft 201 reaches the drive shaft proximal end initial position, the second driver stops.

Of course, the present embodiment is not limited to this, and the first driving mechanism may be retained, because there is no absolute interference between the magnetic attraction and the attraction component when the two components rotate relatively.

Example four

Referring to fig. 4, the present embodiment is mainly modified based on the first embodiment: the threaded connection is changed into clamping connection. Of course, the screw connection in the second embodiment may be changed to snap connection, and here, the improvement on the first embodiment is taken as an example.

In this embodiment, the distal end of the driving shaft 201 and the proximal end of the cartridge shaft 101 are provided with a matching locking structure. At this time, the driving mechanism is no longer needed to drive the driving shaft 201 to rotate and advance to realize threaded connection, and generally speaking, if the cartridge shaft 101 and the driving shaft 201 are directly clamped, it is better to cancel the first driving mechanism and only drive the driving shaft 201 to move bidirectionally in the far and near directions through the second driving mechanism.

In addition, due to the arrangement of the first reset piece 111, an auxiliary function is provided for the driving shaft 201 to pull back the clip cartridge shaft 101 through the clamping structure, so that the driving shaft 201 and the clip cartridge shaft 101 can be stably kept engaged during the pulling back process. When the driving shaft 201 pulls the cartridge shaft 101 back to the proximal initial position, the driving shaft 201 moves further in the proximal direction, and the cartridge shaft 101 is stopped by the proximal limiting structure 110 on the tube 109, so that the driving shaft 201 is separated from the cartridge shaft 101.

Wherein, the joint structure does in this embodiment, sets up locking groove 211 at the distal end of drive shaft 201, sets up the jack on pressing from both sides storehouse axle 101 and is located the joint bullet of jack inner wall and detain 116, and behind the distal end of drive shaft 201 inserted the jack, joint bullet detained 116 and bounced locking groove 211. Of course, the present invention is not limited thereto, and the existing clamping structure capable of realizing plugging and unplugging can be selected and applied to the present invention.

The bin clamping shaft pushing step comprises the following steps:

s11, when the adapter 2 is connected with the cartridge assembly 1, the driving shaft 201 is located at the initial position of the near end of the driving shaft, the cartridge shaft 101 is located at the initial position of the near end of the cartridge shaft, and the driving shaft 201 is separated from the cartridge shaft 101. The second driving member driver of the second driving mechanism is started, the second driving member rotates in one direction, the driving shaft 201 linearly advances towards the far end direction to meet the cartridge shaft 101 at the initial position of the near end of the cartridge shaft, and the driving shaft 201 and the cartridge shaft 101 are in a connection state.

S12, a second driving piece driver in the second driving mechanism continues to drive the second driving piece to rotate, the driving shaft 201 is driven to move linearly towards the distal end position of the driving shaft, the driving shaft 201 then pushes the cabin clamping shaft 101 to move from the initial position of the proximal end of the cabin clamping shaft to the distal end position of the cabin clamping shaft, after the cabin clamping shaft 101 leaves the initial position of the proximal end of the cabin clamping shaft, the driving shaft 201 and the cabin clamping shaft 101 are kept in a connected state, and when the driving shaft 201 reaches the distal end position of the driving shaft, the second driving piece driver stops.

The bin clamping shaft pulling step comprises:

and S21, starting a driver of the second driving piece, driving the second driving piece to rotate along the other direction, driving the driving shaft 201 located at the far end termination position of the driving shaft to linearly move towards the near end direction, driving the driving shaft 201 to drive the bin clamping shaft 101 located at the far end termination position of the bin clamping shaft to linearly move towards the near end direction, and pulling the bin clamping shaft 101 back to the near end initial position of the bin clamping shaft. In this process, the drive shaft 201 and the cartridge shaft 101 are kept connected.

EXAMPLE five

Referring to fig. 5, the present embodiment is mainly modified based on the first embodiment:

instead of providing a first and a second drive mechanism, the drive mechanism may only be capable of selectively driving the drive shaft 201 in rotation, e.g. the drive mechanism comprises a motor connected to the proximal end of the drive shaft 201 (not shown in the figures). At this time, it is preferable that the existing pushing and clamping mechanism and firing mechanism and the matching structure of the cartridge shaft 101 and the two mechanisms are not changed, so that the cartridge shaft 101 can still move in both directions along the proximal and distal directions. The specific mode is as follows:

at the proximal end of the cartridge shaft 101 a coupling 102 is connected, the coupling 102 converting the bi-directional rotation of the drive shaft 201 into a bi-directional movement of the cartridge shaft 101. The connecting piece 102 comprises a screw rod 103 and a nut 104 screwed on the screw rod 103, the proximal end of the screw rod 103 has a larger diameter, a threaded hole is arranged on the proximal end face of the screw rod 103 and is in threaded connection with an external threaded section at the distal end of the driving shaft 201, the nut 104 is connected with the bin clamping shaft 101, and of course, when the distal end of the driving shaft 201 is provided with the threaded hole, an external threaded end is correspondingly arranged on the screw rod.

Therefore, when the bin clamping assembly 1 and the adapter 2 are connected, the bin clamping shaft 101 and the driving shaft 201 are manually screwed in a rotating mode while being inserted. The advantage of this embodiment over the first embodiment is that the drive mechanism is simpler, while the disadvantage is that the cartridge assembly 1 and clip applier are plugged and unplugged simultaneously requiring the cartridge shaft 101 to make a connection with the drive shaft 201, increasing the resistance when connecting the cartridge assembly 1 and adapter 2.

The bin clamping shaft pushing step comprises the following steps:

s11, the adapter 2 and the bin clamping assembly 1 are connected in a rotating and inserting mode, when the adapter 2 is connected with the bin clamping assembly 1, the driving shaft 201 and the screw 103 in the connecting piece 102 on the bin clamping shaft 101 are in threaded connection, the driving shaft 201 is located at the initial position of the near end of the driving shaft, the bin clamping shaft 101 is located at the initial position of the near end of the bin clamping shaft, and the driving shaft 201 and the bin clamping shaft are in a connected state.

S12, the driving mechanism drives the driving shaft 201 to rotate towards one direction, the screw 103 in the connecting piece 102 rotates towards one direction along with the driving shaft 201, the nut 104 on the screw 103 moves linearly towards the far end direction, the bin clamping shaft 101 moves linearly towards the far end direction along with the nut 104, therefore, the bin clamping shaft 101 moves from the initial position of the near end of the bin clamping shaft to the final position of the far end of the bin clamping shaft, after the bin clamping shaft 101 leaves the initial position of the near end of the bin clamping shaft, the driving shaft 201 and the bin clamping shaft 101 are in a connected state, and when the bin clamping shaft 101 reaches the final position of the far end of the bin clamping shaft, the driving mechanism stops.

The bin clamping shaft pulling step comprises:

s21, the driving mechanism drives the driving shaft to rotate along the other direction, the screw 103 in the connecting piece 102 rotates towards the other direction along with the driving shaft 201, the nut 104 on the screw 103 moves linearly towards the proximal direction, the bin clamping shaft 101 located at the far-end termination position of the bin clamping shaft is driven to move linearly towards the proximal direction, and the bin clamping shaft 101 is pulled back to the near-end initial position of the bin clamping shaft. In this process, the drive shaft 201 and the cartridge shaft 101 are kept connected.

After the clip applier is finished, the separation adapter 2 and the cartridge assembly 1 are manually rotated.

Of course, referring to this embodiment, the driving mechanisms in the second, third and fourth embodiments may also be modified, that is, the driving shaft and the connecting member for implementing the conversion motion mode are connected by a screw thread, a magnetic attraction, or a snap connection, and details are not repeated.

EXAMPLE six

With reference to fig. 1, the present embodiment is mainly modified based on the first embodiment:

the first drive mechanism is not provided, and only the second drive mechanism is provided to selectively drive the drive shaft 201 to linearly move in both directions in the near-far direction. At this time, when the cartridge assembly 1 and the adapter 2 are connected, the cartridge shaft 101 and the driving shaft 201 are manually screwed together by rotation while being inserted. The advantage of this embodiment over the first embodiment is that the drive mechanism is simpler, while the disadvantage is that the cartridge assembly 1 and clip applier are plugged and unplugged simultaneously requiring the cartridge shaft 101 to make a connection with the drive shaft 201, increasing the resistance when connecting the cartridge assembly 1 and adapter 2.

The bin clamping shaft pushing step comprises the following steps:

s11, manually rotating the inserting adapter 2 and the bin clamping assembly 1, inserting the inserting adapter and the bin clamping assembly in place, enabling the driving shaft 201 to be located at the initial position of the near end of the driving shaft, enabling the bin clamping shaft 101 to be located at the initial position of the near end of the bin clamping shaft, and enabling the driving shaft 201 and the bin clamping shaft 101 to be in threaded connection.

S12, a second driving piece driver in the second driving mechanism drives the second driving piece to rotate, the driving shaft 201 is driven to move linearly towards the distal end position of the driving shaft, the driving shaft 201 then pushes the bin clamping shaft 101 to move from the initial position of the proximal end of the bin clamping shaft to the distal end position of the bin clamping shaft, after the bin clamping shaft 101 leaves the initial position of the proximal end of the bin clamping shaft, the driving shaft 201 and the bin clamping shaft 101 are kept in a connected state, and when the driving shaft 201 reaches the distal end position of the driving shaft, the second driving piece driver stops.

The bin clamping shaft pulling step comprises:

After the clip applier is finished, the adapter and the clip bin assembly are separated by manual rotation.

Of course, referring to this embodiment, the driving mechanisms of the second embodiment, the third embodiment and the fourth embodiment may also be modified, and are not described again.

EXAMPLE seven

The present embodiment is mainly modified based on the first embodiment:

referring to fig. 6, the driving mechanism only drives the driving shaft 201 to rotate, and the rotation is converted into the following bidirectional movement of the driving cabin clamping shaft 101 along the far and near directions, and the structure is as follows: the connecting piece 102 is connected with the proximal end of the cartridge shaft 101, the proximal end of the connecting piece 102 is in threaded connection with the driving shaft 201, and the connecting piece 102 can convert the rotary movement into the linear movement. For example, the connecting member 102 includes a proximal seat 105, a distal seat 106, and a plurality of rolling members 107 (such as balls or rollers) retained between the proximal seat 105 and the distal seat 106, the proximal seat 105 is provided with a threaded hole or an externally threaded end for being threadedly connected to the driving shaft 201, the distal seat 106 is fixedly connected to the cartridge shaft 101, the distal surface of the proximal seat 105 and the proximal surface of the distal seat 106 are provided with annular tracks, and the rolling members 107 are simultaneously located in the annular tracks of the proximal seat 105 and the distal seat 106. It is understood that the connecting member 102 is similar to the principle of a bearing, or it can be understood that a stud is added on one side of the bearing to connect with the driving shaft 201, and the other side of the bearing is fixedly connected with the cartridge shaft 101 based on the existing bearing.

The bin clamping shaft pushing step comprises the following steps:

s11, when the adapter 2 is connected with the cartridge assembly 1, the driving shaft 201 is located at the initial position of the near end of the driving shaft, the cartridge shaft 101 is located at the initial position of the near end of the cartridge shaft, and the driving shaft 201 is separated from the cartridge shaft 101. The drive mechanism drives the drive shaft 201 to rotationally advance in the distal direction to meet the cartridge shaft 101 at its proximal initial position, during which the drive shaft 201 is threadedly coupled to the distal socket 106 of the coupling 102 on the cartridge shaft 101.

S12, the driving mechanism continues to drive the driving shaft 201 to rotate and advance, the connecting piece 102 converts the rotation and advance of the driving shaft 201 into the movement of the bin clamping shaft 101 from the initial position of the near end of the bin clamping shaft to the final position of the far end of the bin clamping shaft, after the bin clamping shaft 101 leaves the initial position of the near end of the bin clamping shaft, the driving shaft 201 and the bin clamping shaft 101 are kept in a connected state, and when the driving shaft 201 reaches the final position of the far end of the driving shaft, the driving mechanism stops.

The bin clamping shaft pulling step comprises:

s21, the driving mechanism drives the driving shaft 201 located at the distal end position of the driving shaft to rotate and retreat towards the proximal direction, the driving shaft 201 drives the bin clamping shaft 101 located at the distal end position of the bin clamping shaft to linearly move towards the proximal direction through the connecting piece 102, and the bin clamping shaft 101 is pulled back to the proximal end initial position of the bin clamping shaft. In this process, the drive shaft 201 and the cartridge shaft 101 are kept connected.

S22, the driving mechanism continues to drive the driving shaft 201 to rotate and retreat, the bin clamping shaft 101 or the connecting piece 102 on the bin clamping shaft is blocked by the proximal limiting structure, and the driving shaft 201 is separated from the bin clamping shaft 101. When the drive shaft 201 reaches the drive shaft proximal end initial position, the drive mechanism stops.

On the basis of the above, the impact-resistant structure can be changed or added as in the second embodiment; as in the third and fourth embodiments, the connecting member 102 may be magnetically attracted or engaged with the driving shaft 201 instead, that is, the proximal seat 105 is magnetically attracted or engaged with the driving shaft 201.

Example eight

On the basis of the first embodiment, the shape of the square section 208 of the driving shaft 201 is changed, and the shape of the hole of the first driving member 203 is matched with the shape of the driving shaft 201, so long as the driving shaft 201 and the first driving member 203 can form rotation transmission and can move in the axial direction without limit.

For example, referring to fig. 7, the square section 208 may be modified to any non-circular section, such as by adding one or more ribs 213 to the outer wall of the circular drive shaft body, and the aperture of the first drive member 203 may be correspondingly modified by adding one or more grooves 214 to the circular aperture to engage the ribs 213.

The rib 213 may be formed integrally with the driving shaft 201, or may be a pin attached to the driving shaft 201.

As can be seen from the above embodiments one to eight, in the clip applier of the present invention, the driving connection between the driving shaft 201 and the clip bin shaft 101 is separable, and the driving connection can realize that the movement of the driving shaft 201 drives the clip bin shaft 101 to move in both directions in the proximal and distal directions. The threaded connection adopted in the above embodiment is realized through the relative rotational movement (driving by the driving mechanism or manual operation) of the driving shaft 201 and the cartridge shaft 101, and after the driving shaft 201 and the cartridge shaft 101 are screwed together, the bidirectional movement (the driving shaft 201 can be in bidirectional rotational movement, bidirectional rotation) of the driving shaft 201 can drive the cartridge shaft 101 to bidirectionally move in the distal and proximal directions (directly/through the connecting piece 102); the magnetic connection and the clamping in the above embodiments are separable by the approach and the separation of the driving shaft 201 and the cartridge shaft 101, and when the driving shaft 201 and the cartridge shaft 101 are screwed together, the bidirectional movement of the driving shaft 201 (the driving shaft 201 may be bidirectional rotation, bidirectional movement, or bidirectional rotation) may drive the cartridge shaft 101 to bidirectionally move in the direction of distance (directly/through the connecting member 102), and since the magnetic connection and the clamping are relatively stable without a threaded connection, the first reset member 111 plays a more important role in assisting the pushing back of the cartridge shaft 101 in the magnetic connection and the clamping. The main function of the connecting element 102 is to convert the bidirectional non-linear motion (bidirectional rotational movement or bidirectional rotation) of the driving shaft 201 into the bidirectional linear motion of the cartridge shaft 101, and therefore, the corresponding connecting element 102 needs to be selected according to the motion mode of the driving shaft 201, for example, when the driving shaft 201 only rotates, the connecting element 102, for example, a bearing, cancels the rotation amount of the driving shaft 201, and of course, any existing structure similar to the principle can be selected to replace the bearing; for example, when the drive shaft 201 is only rotated, the coupling member 102, such as a lead screw second drive member assembly, converts the rotation into movement, although any existing mechanism for converting rotation into movement may be substituted.

The first and second drive mechanisms and the first and second drive mechanisms used for the respective components are only used for distinction, and when only one drive mechanism is included, the first and second drive mechanisms can be automatically cancelled.

While the above references to "first direction" and "second direction" are two directions of rotation, the mating choices are forward and direction.

In addition, on the basis of the first to eighth embodiments, a rotation driving device of the clip bin shaft 101 may also be optionally added, and the connection between the driving shaft 201 and the clip bin shaft 101 is realized through the connecting member 102, for example, the connecting member 102 may be a bearing head sleeved on the proximal end of the clip bin shaft 101, and the structures of the screw connection, the snap connection and the magnetic connection are all arranged on the bearing head. Therefore, the driving shaft 201 only affects the far and near bidirectional movement of the clip bin shaft 101, and does not drive the clip bin shaft 101 to do other movements.

Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present invention.

Claims

1. Clip applier comprising a cartridge assembly (1) and an adapter (2) detachably connected together, said cartridge assembly (1) having a cartridge shaft (101) and said adapter (2) having a drive shaft (201), characterized in that,

the clip applier is provided with a connection state that the driving shaft (201) and the clip bin shaft (101) form a separable driving connection, and the separable driving connection is that the movement of the driving shaft (201) can drive the clip bin shaft (101) to move in the far and near directions in a bidirectional mode and can be separated selectively;

the clip applier further has an initial state in which the drive shaft (201) and the clip magazine shaft (101) are separated;

the adapter (2) has a drive mechanism which is connected to the drive shaft (201) and can drive the drive shaft (201) to move bidirectionally between an initial position separated from the cartridge shaft (101) and a connection position forming the separable drive connection with the cartridge shaft (101);

the driving mechanism can selectively drive the driving shaft (201) to perform bidirectional rotation movement and can selectively drive the driving shaft (201) to perform bidirectional movement in the far-near direction, and the driving shaft (201) comprises an external thread section (202); the drive mechanism comprises a first drive element (203) rotatably fixed in the adapter and a first drive element drive device, the first drive element (203) forms a rotary drive connection with the drive shaft (201) and the drive shaft (201) is axially movable relative to the first drive element (203), the first drive element drive device is connected with the first drive element (203) to drive the first drive element (203) to rotate; the drive mechanism further comprises a second drive member (206) rotatably secured in the adapter (2), the second drive member (206) having a threaded bore which engages the externally threaded section (202) of the drive shaft (201), and a second drive member drive means connected to the second drive member (206) for driving the second drive member (206) in rotation; the first driving piece driving device and the second driving piece driving device can selectively work alternatively;

or alternatively

The driving mechanism can only selectively drive the driving shaft (201) to do bidirectional rotary movement, and when the driving shaft (201) and the bin clamping shaft (101) are in a connected state: the far end of the driving shaft (201) is connected with a connecting piece (102) connected to the near end of the cartridge shaft (101), the connecting piece (102) can convert the bidirectional rotation movement of the driving shaft (201) into the bidirectional movement of the cartridge shaft (101) along the far and near directions, the connecting piece (102) comprises a near end seat (105), a far end seat (106) and a plurality of rolling pieces (107) limited between the near end seat and the far end seat, the near end seat (105) is in threaded connection, magnetic connection or clamping connection with the driving shaft (201), and the far end seat (106) is fixedly connected with the cartridge shaft (101);

or

The driving mechanism can only selectively drive the driving shaft (201) to rotate bidirectionally, when the driving shaft (201) and the clamping bin shaft (101) are in a connected state: the drive shaft (201) with connect in connecting piece (102) of pressing from both sides storehouse axle (101) are connected, connecting piece (102) can with the two-way rotation of drive shaft (201) converts into press from both sides the two-way removal of storehouse axle (101) along far and near direction, connecting piece (102) include screw rod (103) and twist closure nut (104) on screw rod (103), the near-end of screw rod (103) with the distal end threaded connection, the magnetism of drive shaft (201) are inhaled and are connected or the joint, nut (104) with press from both sides storehouse axle (101) and be connected.

2. The clip applier according to claim 1,

under the condition that the driving mechanism can selectively drive the driving shaft (201) to perform bidirectional rotary movement and can selectively drive the driving shaft (201) to perform bidirectional movement in the far-near direction, the far end of the driving shaft (201) is directly connected with the near end of the cartridge chamber shaft (101) in a threaded mode.

3. The clip applier according to any one of claims 1-2,

the cartridge assembly (1) comprises an impact resistant structure which exerts a force on the cartridge shaft (101) towards the drive shaft (201) during the formation of the connection between the drive shaft (201) and the cartridge shaft (101).

4. The clip applier according to claim 3,

the cartridge assembly (1) further comprises a tube body (109), and the proximal end of the cartridge shaft (101) is inserted into the tube body (109);

the anti-impact structure is a resetting piece arranged between the bin clamping shaft (101) and the pipe body (109), the resetting force of the resetting piece faces to the direction of the driving shaft (201), or the anti-impact structure is an elastic stop piece (108) fixed on the inner wall of the pipe body (109), and the bin clamping shaft (101) is abutted to the elastic stop piece (108).

5. The clip applier according to claim 1,

the near end of the tube body (109) is provided with a near end limiting structure (110), and the near end limiting position of the bin clamping shaft (101) is limited by stopping the near end of the bin clamping shaft (101) or the connecting piece (102).

6. A cartridge spindle drive method employing the clip applier of any one of claims 1-5,

comprises a cabin clamping shaft propelling step and a cabin clamping shaft pulling step:

the bin clamping shaft propelling step comprises: the driving shaft (201) is connected with the bin clamping shaft (101), and the driving shaft (201) drives the bin clamping shaft (101) to move towards the far end side;

the step of pulling back the bin clamping shaft: the driving shaft (201) is connected with the bin clamping shaft (101), and the driving shaft (201) drives the bin clamping shaft (101) to move towards the near-end side.