CN212490043U

CN212490043U - Clamping device capable of being continuously released

Info

Publication number: CN212490043U
Application number: CN202021113043.8U
Authority: CN
Inventors: 黄侠; 黄磊; 陈兴鹏; 牛静宜; 王乐康; 王亮
Original assignee: Suzhou Beiyong Medical Technology Co ltd
Current assignee: Suzhou Beiyong Medical Technology Co ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2021-02-09
Anticipated expiration: 2030-06-16

Abstract

The utility model relates to a clamping device that can release in succession. Mainly comprises a release center, an elastic clamping piece and a locking mechanism. The release center is a clamping mechanism which can be opened and closed, the clamping mechanism can be clamped with the rear end of the elastic clamping piece through closing, the clamping mechanism can drive the elastic clamping piece to reciprocate through driving the rear end of the elastic clamping piece, the elastic clamping piece is provided with a locking position, after the clamping mechanism drives the elastic clamping piece to move to the locking position, the elastic clamping piece is locked and limited by the locking mechanism, the clamping mechanism continues to move towards the downstream side and can be changed into an opening state from a closing state, the clamping mechanism in the opening state is separated from the elastic clamping piece, and after the clamping mechanism is changed into the closing state from the opening state again, the clamping mechanism can be clamped with the rear end of another. The utility model discloses because what release maincenter adopted is that the card is held the mechanism, the card is held the mechanism and is realized through closed and open with the joint and the separation of elasticity clamping piece, does not influence elasticity clamping piece shape, has guaranteed clamping device's core clamping function.

Description

Clamping device capable of being continuously released

Technical Field

The utility model relates to a medical apparatus for tissue hemostasis, in particular to a clamping device capable of continuously releasing.

Background

The active hemorrhage of the digestive tract is generally treated by medicine spraying, a method of burning a bleeding point by high-frequency electricity, laser and argon, a method of mechanical clamping and compression hemostasis and the like. Wherein, the mechanical clamping compression hemostasis is reliable in treatment effect on the active hemorrhage caused by the non-varicose vein, has been accepted by doctors and patients, and is used as the most effective means nowadays; at present, the invasion degree of clinical operation is gradually increased, the injury to the digestive tract is also gradually increased, mechanical clamping is used for closing the mucosa injury of the digestive tract to a certain degree in clinic to promote wound healing, effective closing can be carried out on small perforations of the digestive tract, the effect is also gradually approved in clinic, and the wound of a patient caused by open surgery can be avoided.

The clamping device can be generally called a tissue clamp or a hemostatic clamp and is commonly used for hemostasis of wounds in minimally invasive surgery, the principle of the clamping device is that a mechanical extrusion principle is utilized to clamp a cracked wound surface of a wound closed by a tissue to close the wound, so that a bleeding blocking effect is achieved, and the clamping device can also be used for compressing blood vessels to achieve a rapid hemostasis effect.

Existing clamping devices typically include a release member for actuating and releasing the clamp, which tends to interfere with the shape of the clamp and affect the clamping of the clamp to the tissue.

For example, chinese patent CN107106181 discloses a repeating ligation device, which comprises a clip set, a storage tube for storing the clip set, and a pulling wire, wherein the pulling wire is provided with a pushing member. The opening and closing of the clamp groups are controlled through a traction wire and a pushing-out piece, wherein the traction wire must penetrate through the center of each clamp group, the clamp group comprises two clamping pieces, and the two clamping pieces are combined to form a hole part. The defects that in the clamp group, a groove is needed in the middle of the head end of the clamping piece which plays the most main role of clamping, so that a traction line can pass through, the groove can weaken the clamping capacity of the clamp on tissues, the ligation capacity aiming at tiny blood vessels is seriously influenced, and the failure of the instrument under the working situation is caused. And the traction wire and the ejector piece can generate interference and larger frictional resistance to the peripheral structure of the hole part in the process of entering the next clip group, and the clip is very easy to extrude and deform in a narrow containing pipe for the rigid ejector piece.

For example, chinese patent CN107280723 discloses a medical tissue clamp releasing device, which comprises a releasing member, an outer tube, and a clamping piece, wherein the front end of the clamping piece is provided with a half through hole, and the releasing member is connected with a pulling cable. The release piece and the inhaul cable need to pass through the half through holes in the centers of all the clamping pieces. The disadvantage is also that the half-through hole affects the holding capacity of the clamp.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a continuously releasable clamping device, which is directed to the problem that the releasing member of the conventional clamping device is likely to cause the deformation of the clip.

The utility model provides a clamping device that can release in succession, includes release maincenter, elasticity clamping piece and locking mechanical system, the release maincenter is the open closed card and holds the mechanism, hold the mechanism through the closure can with the rear end joint of elasticity clamping piece, the mechanism is held to the card can impel elasticity clamping piece reciprocating motion through the rear end of drive elasticity clamping piece, the elasticity clamping piece has the latched position, when holding mechanism drive elasticity clamping piece motion to the latched position after, the elasticity clamping piece is locked and spacing by locking mechanical system, at this moment, the mechanism is held to the card and continues to move to the downstream side and can become the open state by the closed state, the card of open state hold the mechanism with the separation of elasticity clamping piece, just the mechanism is held by the card and becomes the closed state back again by the open state, can with the rear end joint.

The utility model discloses an among the continuous release clamping device, because what release maincenter adopted is that the card is held the mechanism, the card is held the mechanism and is realized through closed and open joint and the separation with the elasticity clamping piece, does not influence elasticity clamping piece shape, has guaranteed clamping device's core clamping function.

In one embodiment, the continuously releasable clamping device comprises a plurality of elastic clamping pieces which are arranged in sequence, each elastic clamping piece is provided with a clamping position, and after one elastic clamping piece at the foremost end is released, the elastic clamping piece at the downstream side adjacent to the elastic clamping piece is clamped with the clamping mechanism by moving to the clamping position.

In one of the embodiments, the first and second electrodes are,

the elastic clamping piece comprises two elastic arms and a flat part arranged between the rear ends of the two elastic arms, the flat part is provided with a square hole, the elastic arms comprise clamping arms and opening arms arranged between the clamping arms and the flat part, the front ends of the clamping arms are provided with claw holding parts, each opening arm bends towards the direction of the other opening arm, under the closed state of the two elastic arms, the two opening arms and the flat part form a triangular space region in a surrounding mode, and the opening arms are provided with strip-shaped windows and locking holes located on the upstream sides of the strip-shaped windows;

the locking mechanism comprises a locking piece, the locking piece comprises a base body, two buckle arms arranged at one end of the base body at intervals and a limit buckle arranged at the other end of the base body, the front ends of the buckle arms are provided with locking buckles protruding inwards, the rear ends of the buckle arms are provided with clamping platforms,

the limit buckle is buckled into the square hole of the elastic clamping piece, the limit buckle is limited by the square hole to enable the locking piece and the elastic clamping piece to move synchronously, two buckle arms of the locking piece respectively correspond to the two strip-shaped windows, and when the elastic clamping piece is closed, one part of the locking buckle extends out of the corresponding strip-shaped window,

when the locking piece and the elastic clamping piece are subjected to a certain separating force, the limit buckle can be separated from the square hole, and the locking buckle is buckled into the locking hole at the upstream side of the corresponding strip-shaped window, so that the two elastic clamping pieces are locked,

the continuously releasable clamping device also comprises a launching cavity, the launching cavity comprises a tube body, the rear end of the elastic clamping piece can move in the tube body under the driving of the clamping mechanism, and the elastic clamping piece can be closed under the constraint of the tube body,

two releasing windows are symmetrically arranged on the pipe body and used for giving way to the clamping mechanism when the clamping mechanism is opened,

the two sides of each release window are respectively provided with a guide rib, the downstream side of each release window is provided with a limiting window, the pipe body is further symmetrically provided with two non-return elastic sheets, the non-return elastic sheets are arranged between the front ends of the two release windows, and the non-return elastic sheets are used for applying resistance to the clamping table of the locking plate.

In one of the embodiments, the first and second electrodes are,

the release center comprises an elastic claw and a connecting shaft,

the elastic claw comprises the clamping mechanism and a reset part, the reset part is strip-shaped, one end of the reset part is connected with the clamping mechanism, the other end of the reset part is connected with the connecting shaft,

the clamping mechanism is provided with a clamping groove, the rear end of the clamping groove is provided with an inclined guide edge, the upstream side of the clamping groove is an inclined edge, the downstream side of the clamping groove is a concave edge,

the front end of the connecting shaft is provided with a fixing opening used for connecting with the reset part, the rear end of the connecting shaft is provided with a fixing hole and a guide hole,

but continuous release's clamping device still includes transport portion, transport portion includes propelling movement line, drive wire and propelling movement piece, the one end of propelling movement line is passed the guide hole, and with be located the chaining shaft upstream side the propelling movement piece links to each other, the drive wire with the fixed orifices links to each other, the propelling movement piece is used for pushing away the elasticity clamping piece towards the transmission chamber direction.

In one of the embodiments, the first and second electrodes are,

the continuously releasable gripping apparatus further comprises a multilumen tubing comprising an outer sheath, a lumen tube, and an adapter tube,

the front end of the outer sheath tube is connected with the rear port of the emission cavity, the rear end of the outer sheath tube is connected with the connecting shaft tube,

the cavity tube is arranged in the outer sheath tube, the front end of the cavity tube is positioned at the rear end of the launching cavity, the cavity tube is provided with a reserve cavity with two open ends, the reserve cavity is used for storing the elastic clamping pieces, beam guide grooves are formed in two sides of the cavity tube, and the two reset parts are respectively positioned in the two beam guide grooves.

In one of the embodiments, the first and second electrodes are,

the conveying part also comprises a wire winding pipe, a handle frame, a sealing cover, a pushing slide block and a driving slide block,

the handle frame is provided with a first slide bar and a second slide bar, the front end of the handle frame is provided with a clamping groove, the rear end of the handle frame is provided with a handle ring,

the pushing sliding block is arranged on the first sliding rod and is in sliding fit with the first sliding rod,

the driving sliding block is arranged on the second sliding rod and is in sliding fit with the second sliding rod, a ring is arranged on the driving sliding block,

the front end of the wire winding pipe is connected with the connecting shaft pipe, the rear end of the wire winding pipe is arranged in the clamping groove of the handle frame, the clamping groove is sealed by the sealing cover,

the rear end of the pushing wire is arranged in the pushing sliding block, and the rear end of the driving wire is fixedly arranged in the driving sliding block.

In one of the embodiments, the first and second electrodes are,

the elastic clamping piece comprises two elastic arms and a flat part arranged between the rear ends of the two elastic arms, the elastic arms comprise a clamping arm, an opening arm and a flat section which are sequentially arranged, the flat section is connected with the flat part, the front end of the clamping arm is provided with a claw holding part, the two opening arms are bent towards the outer side, and under the closed state of the two elastic arms, the two flat sections and the flat part form a square space frame,

a step opening is arranged at the transition position of the clamping arm and the opening arm,

the front edge of the step opening is an arc which is convex outwards, the rear edge of the step opening is concave inwards,

clamping grooves are respectively arranged at the transition positions of the clamping arms and the opening arms and at the two sides of the upstream side of the step opening, the front parts of the clamping grooves are provided with expanding blades formed by the clamping arms extending towards the two sides, the rear parts of the clamping grooves are provided with lug boss edges,

the locking mechanism comprises a locking sleeve and a clutch sleeve,

the locking sleeve is in a two-section cylindrical tube shape, the front section cylindrical tube of the locking sleeve is a locking part, the rear section cylindrical tube of the locking sleeve is a connecting part,

the front end opening of the locking part is symmetrically provided with convex lugs which are bent inwards to enable the end opening of the locking sleeve to form a cavity opening for the elastic clamping piece to pass in and out, the two sides of the rear part of each convex lug are provided with shoulders which can guide and clamp the unfolding leaf of the elastic arm, the two sides of the rear part of each convex lug are symmetrically provided with a pair of elastic pieces, when the unfolding leaf is close to the upper shoulder part, the elastic pieces are bounced into the clamping grooves to prevent the elastic clamping piece from being separated,

the whole connecting part is provided with a wide groove from the middle, the rest part forms symmetrically arranged card pins, the wall of the card pin is provided with a guide groove, the front end of the guide groove extends into the locking part, two sides of the front end of the guide groove are provided with inner steps,

the clutch sleeve comprises two opposite base arms, the front ends of the base arms are provided with concave edges, the rear ends of the base arms are provided with elastic clamping feet, the elastic clamping feet are provided with convex blocks, the rear ends of the base arms are positioned at two sides of the elastic clamping feet and are provided with stop shoulders,

the clutch sleeve is arranged in the locking sleeve, two elastic clamping feet of the clutch sleeve are respectively inserted into the corresponding guide grooves, the clutch sleeve can move back and forth in the locking sleeve within a certain range,

the elastic clamping piece is arranged in the locking sleeve and the clutch sleeve, the flat part of the elastic clamping piece is clamped with the clamping mechanism,

when the step opening of the elastic clamping piece is close to the concave edge, the clamping arm is completely closed,

when the elastic sheet is bounced into the clamping groove of the elastic clamping sheet, the locking mechanism locks the clamping state of the elastic clamping sheet,

the continuously releasable clamping device also comprises a launching cavity, the launching cavity comprises a pipe body, two releasing windows are arranged on the pipe body at intervals, two guide grooves are arranged at intervals, the releasing windows are used for yielding the clamping mechanism when the clamping mechanism is opened, the guide grooves are used for guiding the movement of the clamping mechanism,

the upstream side of the guide groove is provided with a connecting window,

a projection is provided on the downstream side of the release window,

the clutch sleeve is positioned in the locking sleeve, the clamping foot is inserted into the launching cavity, the locking part is positioned on one side of the launching cavity, the guide groove is opposite to the connecting window, the protrusion block is buckled into the connecting window, the launching cavity cannot be separated from the locking sleeve after the locking sleeve is locked by the protrusion block, and the protrusion block is separated from the connecting window when the protrusion block bears a separating force exceeding a preset separating force.

In one of the embodiments, the first and second electrodes are,

the clamping mechanism comprises two rigid jaws and a connecting shaft,

the rigid claw comprises a clamping part and a clamping groove positioned on the downstream side of the clamping part, the front part of the clamping groove is an oblique edge, the rear part of the clamping groove is a cam edge,

the rigid clamping jaw also comprises a reset part positioned at the downstream side of the clamping groove, the reset part is provided with a shaft hole, the rear end of the reset part is provided with a convex tail,

the connecting shaft comprises a movable part and a tail shaft, the tail shaft is provided with a tail hole,

the movable part is provided with an installation groove, the two opening sides of the installation groove are cut into plane parts, the front end of the movable part is provided with a through hole, a middle shaft is arranged in the through hole, the middle shaft penetrates through shaft holes of the two rigid clamping jaws and installs the two rigid clamping jaws in the installation groove,

blind holes are respectively arranged on two sides of the rear end of the movable part, a short shaft is arranged in each blind hole and guided by the guide groove of the emission cavity,

after the outer side of the convex tail is propped against the bulge in the launching cavity, the two rigid clamping jaws can rotate around the shaft, the clamping part opens the releasing windows at the two sides,

and when the cam edges of the two rigid clamping claws in the open state are pushed by the flat part of the elastic clamping piece, the two rigid clamping claws can be folded, so that the two sides of the flat part of the elastic clamping piece are respectively clamped into the two clamping grooves.

In one of the embodiments, the first and second electrodes are,

the continuously releasable holding device further comprises a transport section,

the conveying part comprises a wire winding pipe, a handle rod, a sliding block driving wire and a hand ring,

one end of the wire winding tube is connected with the tail end of the emission cavity, the other end of the wire winding tube is connected with the front end of the handle rod,

the sliding block is in sliding fit with the handle rod,

one end of the driving wire is connected with the tail hole on the connecting shaft, the other end of the driving wire is connected with the sliding block,

the bracelet with the handle pole links to each other.

A method of operating a continuously releasable holding apparatus, comprising said continuously releasable holding apparatus,

the elastic clamping piece is pulled by the clamping mechanism to move to the locking position, the locking mechanism locks and limits the elastic clamping piece,

continuously pulling the clamping mechanism to change the clamping mechanism from a closed state to an open state and separate from the elastic clamping piece,

after the elastic clamping piece in the locking state is released, another clamping unit is filled into the emission cavity, and then the sliding block is operated to drive the clamping mechanism, so that the clamping mechanism is changed from the opening state to the closing state and is clamped with the elastic clamping piece in the clamping unit.

Drawings

Fig. 1 is a schematic view of a first embodiment of a continuously releasable holding device according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of the internal structure of a first embodiment of a continuously releasable holding apparatus according to an embodiment of the present invention.

Fig. 3 is a schematic view of a resilient clip and locking tab of a first embodiment of a continuously releasable clamping device according to an embodiment of the present invention.

Fig. 4 is a schematic view of a release hub of a first embodiment of a continuously releasable holding apparatus according to an embodiment of the present invention.

Fig. 5 is a schematic view of an initial state of a first embodiment of a continuously releasable holding device according to an embodiment of the present invention.

Fig. 6 is a schematic view of an open state of a first embodiment of a continuously releasable holding apparatus according to an embodiment of the present invention.

Fig. 7 is a schematic view of a locked state of a first embodiment of a continuously releasable holding apparatus according to an embodiment of the present invention.

Fig. 8 is a schematic view of the first embodiment of the continuously releasable clamping device of the present invention with the resilient clip and locking tab released.

Fig. 9 is a schematic view of a conveying section of a first embodiment of a continuously releasable holding device according to an embodiment of the present invention.

Fig. 10 is a schematic view of a second embodiment of a continuously releasable holding apparatus according to an embodiment of the present invention.

Fig. 11 is a schematic view of the resilient clip, the clutch sleeve, and the locking sleeve of the second embodiment of the continuously releasable holding apparatus of the present invention.

Fig. 12 is a schematic view of the stop shoulder of the clutch sleeve and the inner step of the locking sleeve of the second embodiment of the continuously releasable holding apparatus of an embodiment of the present invention.

Fig. 13 is a schematic view of a release hub of a second embodiment of a continuously releasable holding apparatus according to an embodiment of the present invention.

Fig. 14 is a schematic view of a resilient clip, a clutch sleeve, a locking sleeve, a firing chamber, and a release hub of a second embodiment of a continuously releasable holding apparatus of an embodiment of the present invention.

Fig. 15 is a schematic view of an initial state of a second embodiment of a continuously releasable holding apparatus according to an embodiment of the present invention.

Fig. 16 is a schematic view of an open state of a second embodiment of a continuously releasable holding apparatus according to an embodiment of the present invention.

Fig. 17 is a schematic view of a locked state of a second embodiment of a continuously releasable holding apparatus according to an embodiment of the present invention.

Fig. 18 is a schematic view of the second embodiment of the continuously releasable clamping device of the present invention with the resilient jaws, the clutch sleeve, and the locking sleeve released.

Fig. 19 is a schematic view of a conveying section of a second embodiment of a continuously releasable holding apparatus according to an embodiment of the present invention.

Wherein:

1. releasing part 2, conveying part 21, wire winding tube 22 and pushing wire

231. Push block 23, drive wire 24, handle frame 241, first slide bar

242. Second slide bar 243, clamping groove 244, handle ring 25 and sealing cover

26. Push slider 261, slide chamber 262, fixing groove 27, drive slider

271. A movable cavity 272, a clamping hole 273, a ring

3. Clamping unit 301, elastic clamping piece 311 and elastic arm

312. Flat part 313, square hole 314, open arm

315. Clamping arm 316, claw holding part 317 and strip-shaped window

318. Locking hole

303. Locking mechanism 34, locking piece 341, and snap arm

342. Limiting buckle 343, locking buckle 344 and clamping table

410. Emission cavity 411, guide rib 412, release window 413 and backstop elastic sheet

414. Define Window 501, Release hub

51. Elastic claw 511, clamping part 512, reset part 513 and clamping groove

514. Inclined guide edge 53, connecting shaft 531, fixing opening 532 and fixing hole

533. Guide hole

6. Multiple tube 61, outer sheath tube 62, cavity tube 621, reserve cavity

622. Guide groove 63 and connecting shaft tube

28. Slide block 281, slide cavity 282 and fixing groove

29. Bracelet 291, circular card slot

321. Straight section 322, step mouth 323, draw-in groove

324. Unfolding blade 325, convex edge

303. Locking mechanism

35. Locking sleeve 351, locking part 352 and connecting part

353. Convex ear 354, shoulder 355 and spring plate

356. Card pin 357, guide groove 358, inner step

36. Clutch sleeve 361, concave edge 362 and stop shoulder

363. Elastic clamping foot 364 and convex block

402. Emission chamber 421, guide groove 422, connecting window 423 and releasing window

424. Projection

501. Release hub

52. Rigid claw 521, clamping part 522 and clamping groove

523. Cam edge 524, reset part 525 and shaft hole

526. Convex tail

54. Connecting shaft 541, movable part 542 and mounting groove

543. Plane part 544, through hole 545 and middle shaft

546. Blind hole 547, short shaft 548 and tail hole

70. Handle 701, step hole 702 and long sliding chute

703. Circular fastener 704 and small through hole

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

As shown in fig. 1 and 10, embodiments of the present invention provide a continuously releasable clamping device. The device includes a release hub 501, a resilient clip 301, and a locking mechanism 303. The above-described elastic clip 301 and the locking mechanism 303 may constitute a clamping unit 3.

The release center 501 is an openable and closable holding mechanism, and the holding mechanism can be clamped with the rear end of the elastic clamping piece 301 through closing.

The catching mechanism may cause the elastic clip 301 to reciprocate by driving the rear end of the elastic clip 301.

Elastic clamping piece 301 has the latched position, and behind the mechanism drive elastic clamping piece 301 motion of card was held to the latched position, elastic clamping piece 301 is locked and spacing by locking mechanism 303, at this moment, the mechanism is held to the downstream side and is moved and can become open state by closed state, the mechanism is held to the card of open state with the centre gripping unit 3 separation, just the mechanism is held to the card and becomes closed state back again by open state, can with the rear end joint of another elastic clamping piece 301.

The utility model discloses an among the continuous release clamping device, because what release maincenter 501 adopted is that the card held the mechanism, the card held the mechanism through closed with open the joint and the separation that realize with elastic clamping piece 301, do not influence elastic clamping piece 301 shape, guaranteed clamping device's core clamping function.

In this embodiment, the continuously releasable holding device has various embodiments. The first embodiment can be seen from fig. 1 to 9, and includes a plurality of elastic clamping pieces 301 arranged in sequence, where the elastic clamping pieces 301 have clamping positions, and after one elastic clamping piece 301 located at the front end is released, the elastic clamping piece 301 located at the downstream side adjacent to the elastic clamping piece 301 is clamped with the clamping mechanism by moving to the clamping position. With this arrangement, after one elastic clip 301 is released, the elastic clip 301 on the downstream side is pushed to the front and is again engaged with the catch mechanism.

It can be understood that the continuously releasable holding device of the present invention can be another embodiment, as shown in fig. 10 to fig. 19, that is, after one holding unit 3 is released, the releasing hub 501 and other elements can be pulled out from the body, and then a new holding unit 3 is installed with the releasing hub 501, so that the holding device can enter the body through the endoscope again to perform the holding operation, and a plurality of holding units 3 can be provided in one operation, so that another mode of continuous holding can be realized.

The first embodiment is described in detail below, and reference is made in particular to fig. 1 to 9.

In this embodiment, the elastic clip 301 includes two elastic arms 311 and a flat portion 312 disposed between rear ends of the two elastic arms 311, the flat portion 312 is provided with a square hole 313, the elastic arm 311 includes a clamping arm 315 and an opening arm 314 disposed between the clamping arm 315 and the flat portion 312, a claw holding portion 316 is disposed at a front end of the clamping arm 315, each opening arm 314 is bent toward the other opening arm 314, and in a closed state of the two elastic arms 311, the two opening arms 314 and the flat portion 312 enclose a triangular space region.

The opening arm 314 is formed with a bar-shaped window 317 and a locking hole 318 located on the upstream side of the bar-shaped window 317.

The locking mechanism 303 comprises a locking piece 34, the locking piece 34 comprises a base, two buckle arms 341 arranged at one end of the base at intervals, and a limit buckle 342 arranged at the other end of the base, the front end of the buckle arm 341 is provided with a locking buckle 343 protruding inwards, and the rear end of the buckle arm 341 is provided with a clamping table 344.

The limit button 342 is buckled in the square hole 313 of the elastic clip 301, the limit button 342 is limited by the square hole 313 so that the locking piece 34 can move synchronously with the elastic clip 301, the two latch arms 341 of the locking piece 34 correspond to the two strip windows 317 respectively, and when the elastic clip 301 is closed, a part of the lock button 343 extends out of the corresponding strip windows 317.

When the locking piece 34 and the elastic clip piece 301 are subjected to a certain separation force, the limit catch 342 can be taken out of the square hole 313, and the locking catch 343 is caught in the locking hole 318 on the upstream side of the corresponding strip-shaped window 317, so that the two elastic clip pieces 301 are locked.

The continuously releasable clamping device further comprises a launching cavity 410, wherein the launching cavity 410 comprises a tube body, the rear end of the elastic clip 301 can move in the tube body under the driving of the clamping mechanism, and the elastic clip 301 can be closed under the constraint of the tube body.

Two releasing windows 412 are symmetrically arranged on the tube body, and the releasing windows 412 are used for giving way to the holding mechanism when the holding mechanism is opened.

Guide ribs 411 are respectively provided on both sides of each release window 412, and a limiting window 414 is provided on the downstream side of each release window 412. By providing the limiting window 414, it is possible to constrain the resilient catch on the one hand such that it only contracts back and forth on the upstream side of the limiting window 414 and on the other hand to limit the retracted position of the resilient catch. Specifically, the limiting window 414 may be a structure protruding toward the inside of the tube.

Two elastic backstop pieces 413 are further symmetrically arranged on the pipe body, the elastic backstop pieces 413 are arranged between the front ends of the two release windows 412, and the elastic backstop pieces 413 are used for applying resistance to the clamping platforms 344 of the locking pieces 34.

Specifically, the elastic clip 301 has two elastic arms 311, a flat portion 312 is disposed in the middle of the two elastic arms 311, and a square hole 313 is formed in the center of the flat portion 312. The connection between the flat portion 312 and the elastic arm 311 is bent, and a space similar to a triangle is formed by the two elastic arms 311 in a closed state. The elastic arm 311 has a lower section formed by an open arm 314 bent inward, a front section formed by a grasping arm 315 grasping tissue, and a distal end bent to form a grasping portion 316. A bar-shaped window 317 is formed on the opening arm 314, and a locking hole 318 is formed above the bar-shaped window 317. The elastic clip 301 can be made of medical memory alloy or medical stainless steel metal after heat treatment to ensure excellent elastic capability.

Specifically, the locking mechanism 303 includes a locking plate 34, two sides of the locking plate 34 are provided with a snap arm 341, a middle extending portion is provided with a limit buckle 342, the snap arm 341 protrudes inward to form a locking buckle 343, and the outer side of the root of the snap arm 341 is provided with a clamping platform 344. The limit buckle 342 of the locking piece 34 is buckled into the square hole 313 of the elastic clip piece 301, and can move synchronously with the elastic clip piece 301 under the limit action of the square hole 313. The two latch arms 341 of the locking plate 34 are disposed in the bar-shaped window 317, and the opening and closing of the elastic arms 311 are not affected. When the elastic clip 301 is closed, the two locking buckles 343 are located outside the elastic arms 311, and when the locking piece 34 and the elastic clip 301 are subjected to a certain separation force, the limit buckle 342 can be taken out of the square hole 313.

Specifically, the emission cavity 410 is a metal thin-wall tube, a pair of symmetrical guide ribs 411 is formed on the tube wall by stamping, and a release window 412 is formed between the two guide ribs 411. The releasing window 412 is provided with a reverse stop spring piece 413 at the upper part and a limiting window 414 at the lower part. The firing chamber 410 may be made of stainless steel for medical use, and the structure may be formed by stamping, blanking, or laser cutting.

In this embodiment, the release hub 501 includes a resilient pawl 51 and a connecting shaft 53.

The elastic claw 51 comprises a clamping mechanism and a reset part 512, the reset part 512 is in a strip shape, one end of the reset part 512 is connected with the clamping mechanism, and the other end of the reset part 512 is connected with the connecting shaft 53.

The clamping mechanism is provided with a clamping groove 513, the rear end of the clamping groove 513 is provided with an oblique guide edge 514, the upstream side of the clamping groove 513 is an oblique edge, and the downstream side of the clamping groove 513 is a concave edge.

The front end of the connecting shaft 53 is provided with a fixing opening 531 for connecting with the reset part 512, and the rear end of the connecting shaft 53 is provided with a fixing hole 532 and a guide hole 533.

The continuously releasable clamping device further comprises a conveying part 2, the conveying part 2 comprises a pushing wire 22, a driving wire 23 and a pushing block 231, one end of the pushing wire 22 passes through the guiding hole 533 and is connected with the pushing block 231 located on the upstream side of the link shaft, the driving wire 23 is connected with the fixing hole 532, and the pushing block 231 is used for pushing the elastic clamping piece 301 towards the emitting cavity 410.

Specifically, the release hub 501 includes a resilient latch 51 and a connecting shaft 53. The elastic claw 51 includes a catching portion 511 and a restoring portion 512. The holding portion 511 is claw-shaped, and has a holding groove 513 at the middle part and an inclined guide edge 514 at the inner side. The upper edge of the clamping groove 513 is a bevel edge, the lower edge of the clamping groove is a concave edge, and the reset part 512 is a long strip and has good elastic recovery capability. The tail end of the reset portion 512 is connected with the connecting shaft 53. The elastic claws 51 can be made of a metal material with good elastic recovery capability, such as nitinol, heat-treated stainless steel, etc. by stamping and punching. The upper end of the connecting shaft 53 is provided with a fixing opening 531 fixedly connected with the reset part 512, the lower end is provided with a fixing hole 532, and a through guide hole 533 is eccentrically penetrated through the middle shaft.

In this embodiment, the continuously releasable holding device further comprises a manifold 6, and the manifold 6 comprises an outer sheath tube 61, a cavity tube 62 and a connecting shaft tube 63.

The front end of the outer sheath tube 61 is connected with the rear end of the transmitting cavity 410, and the rear end of the outer sheath tube 61 is connected with the connecting shaft tube 63.

The cavity tube 62 is installed in the outer sheath tube 61, the front end of the cavity tube 62 is located at the rear end of the launching cavity 410, the cavity tube 62 is provided with a reserve cavity 621 with two open ends, the reserve cavity 621 is used for storing the elastic clamping piece 301, the two sides of the cavity tube 62 are provided with two bundle guiding grooves 622, and the two resetting parts 512 are respectively located in the two bundle guiding grooves 622.

Specifically, the multi-tube 6 comprises an outer sheath tube 61, a cavity tube 62 and a connecting shaft tube 63, wherein the outer sheath tube 61 can be a metal wire winding tube or a metal thin-wall tube, the front end of the outer sheath tube is connected with the rear end of the emission cavity 410, and the rear end of the outer sheath tube is connected with the connecting shaft tube 63. The cavity tube 62 is installed in the sheath tube 61, the middle is a flat cylindrical cavity storage cavity 621, and both sides are provided with beam guide grooves 622.

In this embodiment, the conveying unit 2 further includes a winding tube 21, a handle frame 24, a cover 25, a pushing slider 26, and a driving slider 27.

The handle frame 24 has a first slide bar 241 and a second slide bar 242, a fastening groove 243 is formed at the front end of the handle frame 24, and a handle ring 244 is disposed at the rear end of the handle frame 24.

The pushing slide 26 is mounted on the first slide bar 241 and is in sliding fit with the first slide bar 241.

The driving slider 27 is mounted on the second slide bar 242 and is in sliding fit with the second slide bar 242, and a finger ring 273 is arranged on the driving slider 27.

The front end of the wire winding tube 21 is connected with the connecting shaft tube 63, the rear end of the wire winding tube 21 is installed in the clamping groove 243 of the handle frame 24, and the clamping groove 243 is sealed by the sealing cover 25.

The rear end of the push wire 22 is arranged in the push slider 26.

The rear end of the driving wire 23 is fixed in the driving slider 27.

Specifically, the conveying section 2 is composed of a filament winding tube 21, a pushing wire 22, a driving wire 23, a handle frame 24, a cover 25, a pushing slider 26, and a driving slider 27. The wire winding pipe 21 is formed by winding stainless steel wires into a pipe, and the wires can be flat wires or round wires. The front end of the wire winding tube 21 is connected to the connecting shaft tube 63, the rear end is mounted in the engaging groove 243 of the handle frame 24, and the engaging groove 243 is sealed by the cover 25. The front end of the driving wire 23 is fixed in the fixing hole 532, and the rear end is fixed in the driving slider 27. The push wire 22 passes through the guiding hole 533, and the front end thereof is mounted with the push block 231, and the rear end thereof is mounted and fixed in the push slider 26. The pushing block 231 has a cavity at the front end. The handle frame 24 has a first slide bar 241 and a second slide bar 242, a locking groove 243 formed at the front end thereof, and a handle ring 244 provided at the rear end thereof. The pushing sliding block 26 is of a two-half structure, the two halves are combined and then installed on the first sliding rod 241 through a sliding cavity 261 and can slide back and forth, a fixing groove 262 is formed in the middle and can fix the pushing wire 22, the driving sliding block 27 is of a two-half structure and is installed on the second sliding rod 242 through a movable cavity 271 and can slide back and forth, a clamping hole 272 is formed in the middle and can fix the driving wire 23, and a finger ring 273 is arranged on the lower portion of the driving sliding block and facilitates finger control.

The operation method of the clamping device of the first embodiment is as follows:

before being released, one clamping unit 3 is disposed within the firing chamber 410. The flat portion 312 is laterally caught in the catching groove 513, and the reset portion 512 passes through the lateral limiting windows 414 and the beam guide groove 622. One or more holding units 3 are disposed in the storage cavity 621. The clamping units 3 are connected end to end. The claw holding part 316 of the latter clamping unit 3 abuts against the limit buckle 342 of the former clamping unit 3. The limit button 342 of the last clamping unit 3 is disposed in the inner cavity of the pushing block 231 and pushed by the pushing block 231.

The pushing driving slider 27 moves to be transmitted to the connecting shaft 53 through the driving wire 23, then the connecting shaft 53 drives the elastic claw 51 to be pushed out, the elastic claw 51 moves upwards relative to the release window 412 and enters the upper section of the launching cavity 410, the two sides of the elastic claw 51 are restrained by the pipe wall of the launching cavity 410 and cannot be bounced to the two sides, so that the elastic claw 51 can stably push out the elastic clamping piece 301, the elastic claw 51 grasps the flat part 312, and pushes the elastic clamping piece 301 to extend out of the launching cavity 410. The locking piece 34 moves towards the mouth of the emission cavity 410 along with the elastic clip 301, pushes the anti-return elastic piece 413 open and crosses the anti-return elastic piece 413, the anti-return elastic piece 413 rebounds, and after the opening arm 314 extends out of the emission cavity 410, the bending state is recovered by the elasticity of the locking piece, so that the clamping arm 315 is opened, the size of the opening is determined by the length of the elastic clip 301 and the bending degree of the opening arm 314, the design is 10-20mm, and the functional requirement of the clamping device is met.

The driving slider 27 is pulled back, and the pulling back motion is transmitted to the elastic jaw 301 through the driving wire 23, the connecting shaft 53 and the elastic jaw 51. The opening arm 314 of the elastic clip 301 is restricted by the opening of the launching cavity 410, so that the clamping arms 315 are folded towards the cavity, wound tissue is clamped between the clamping arms 315, the clamping arms 315 are folded to clamp the wound tissue, in the folding process, the locking piece 34 moves towards the launching cavity 410 along with the flat part 312, when the clamping platform 344 is close to the upper reverse spring piece 413, the clamping arms 315 are completely closed, the driving slider 27 can be operated to repeatedly open and close in front of the reverse spring piece 413, the position for clamping the tissue is adjusted, after the clamping arms 315 are completely closed, the driving slider 27 is continuously pulled, the locking piece 34 is blocked by the reverse spring piece 413 and cannot continuously move, the elastic clip 301 is pulled by the elastic claw 51, when the pulling force is greater than a set value by about 20-30N, the limiting buckle 342 is separated from the square hole 313, and the locking buckle 343 is buckled into the locking hole 318, so that the elastic clip 301 is kept in. At this time, the holding portion 511 of the elastic claw 51 returns to the position of the opening of the releasing window 412, and under the action of the pulling force, the holding portion 511 springs out of the releasing window 412, is separated from the holding of the flat portion 312, and moves to the lower section of the releasing window, and is elastically restored by the restoring portion 512 and received in the launching chamber 410. At this time, the clamping unit 3 is clamped on the tissue, no barrier exists in the launching cavity 410, the conveying part 2 is retracted, and the clamping unit 3 smoothly comes out of the launching cavity 410 and is clamped on the tissue.

The driving slide block 27 is pulled back to the bottom and fixed, the pushing slide block 26 is pushed forward, the movement pushes the holding units in the storage cavity 621 to move forward through the pushing wire and the pushing block 231, the holding claw part 316 of the foremost holding unit pushes the inclined guide edge 514 and passes through the holding part 511 until the flat part 312 is clamped into the holding groove 513, and at this time, the driving slide block 27 has obvious buckling feedback and can sense the holding position of the elastic clamping piece 301. Then the driving slide block 27 is pushed and pulled until the elastic clamping piece 301 extends out of the opening of the launching cavity 410 and is pushed and pulled normally to open and close along with the driving slide block 27.

The above steps are repeated, and continuous clamping operation can be carried out.

The second embodiment is described in detail below. See in particular fig. 10 to 19.

In this embodiment, the elastic clip 301 includes two elastic arms 311 and a flat portion 312 disposed between rear ends of the two elastic arms 311, the elastic arms 311 includes a clamping arm 315, an opening arm 314, and a flat section 321 disposed in sequence, the flat section 321 is connected to the flat portion 312, a claw holding portion is disposed at a front end of the clamping arm 315, the two opening arms 314 are bent outward, and when the two elastic arms 311 are in a closed state, a square space frame is defined by the two flat sections 321 and the flat portion 312.

A step opening 322 is arranged at the transition position of the clamping arm 315 and the opening arm 314.

The front edge of the step opening 322 is an arc protruding outwards, and the rear edge of the step opening 322 is recessed inwards.

Clamping grooves 323 are respectively formed in the transition positions of the clamping arms 315 and the expanding arms 314 and on two sides of the upstream side of the stepped opening 322, expanding leaves 324 formed by the clamping arms 315 extending towards two sides are arranged in the front of the clamping grooves 323, and boss edges 325 are arranged at the rear of the clamping grooves 323.

The locking mechanism 303 includes a locking sleeve 35 and a clutch sleeve 36.

The locking sleeve 35 is in the shape of a two-section cylindrical tube, the front section cylindrical tube of the locking sleeve 35 is a locking part 351, and the rear section cylindrical tube of the locking sleeve 35 is a connecting part 352.

Convex lugs 353 are symmetrically arranged at the front end of the locking part 351, the convex lugs 353 are bent inwards to enable the end of the locking sleeve 35 to form a cavity opening for the elastic clamping piece 301 to pass in and out, shoulder parts 354 are arranged on two sides of the rear part of each convex lug 353, the shoulder parts 354 can guide and clamp the unfolding blades 324 of the elastic arms 311, a pair of elastic pieces 355 are symmetrically arranged on two sides of the rear part of each convex lug 353, and when the unfolding blades 324 are close to the upper shoulder parts 354, the elastic pieces 355 are bounced into the clamping grooves 323 to prevent the elastic clamping piece 301 from falling out.

The connecting portion 352 is integrally provided with a wide groove from the middle, the remaining portion is formed with symmetrically arranged card pins 356, the wall of the card pins 356 is provided with a guide groove 357, the front end of the guide groove 357 extends into the locking portion 351, and the two sides of the front end of the guide groove 357 are formed with inner steps 358.

The clutch sleeve 36 comprises two opposite base arms, the front ends of the base arms are provided with concave edges 361, the rear ends of the base arms are provided with elastic clamping feet 363, the elastic clamping feet 363 are provided with convex blocks 364, and the rear ends of the base arms are provided with stop shoulders 362 at two sides of the elastic clamping feet 363.

The clutch sleeve 36 is installed in the locking sleeve 35, two elastic clamping feet 363 of the clutch sleeve 36 are respectively inserted into the corresponding guide grooves 357, and the clutch sleeve 36 can move back and forth in the locking sleeve 35 within a certain range.

The elastic clamping piece 301 is installed in the locking sleeve 35 and the clutch sleeve 36, and the flat part 312 of the elastic clamping piece 301 is clamped with the clamping mechanism.

When the stepped opening 322 of the elastic clip 301 is abutted against the depressed edge 361, the holding arm 315 is completely closed.

When the elastic piece 355 is inserted into the engaging groove 323 of the elastic clip 301, the locking mechanism 303 locks the clamping state of the elastic clip 301.

But continuous release's clamping device still includes transmission chamber 402, transmission chamber 402 includes a body, the interval is provided with two release windows 423 and the interval is provided with two guide ways 421 on the body, release window 423 is used for when the mechanism is opened for the card is held the mechanism and is stepped down, guide ways 421 are used for holding the motion of mechanism and leading.

The upstream side of the guide groove 421 is opened with a connection window 422.

A projection 424 is provided on the downstream side of the release window 423.

The clutch sleeve 36 is located in the locking sleeve 35, the latch pin 356 is inserted into the launching cavity 402, the locking portion 351 is located at one side of the launching cavity 402, the guide groove 357 faces the connecting window 422, the bump 364 is buckled into the connecting window 422, the locking sleeve 35 is locked by the bump 364, cannot fall out of the launching cavity 402, and when the bump 364 is subjected to a force exceeding a predetermined separation force, the bump 364 is separated from the connecting window 422.

Specifically, the joint of the flat part 312 of the elastic clip 301 and the elastic arm 311 is bent to be close to 90 °, the root of the elastic arm 311 is a straight section 321, and the root and the opening arm 314 are bent inward to a certain angle, so that the two root parts and the flat part 312 form a square space frame. A step opening 322 is formed at the transition position of the clamping arm 315 and the opening arm 314, the upper edge of the step opening 322 is an arc which protrudes outwards, and the lower edge is recessed inwards. Clamping grooves 323 are formed in the two sides of the front portion of the stepped opening 322. The upper side of the clamping groove 323 is provided with a clamping arm 315 which extends towards two sides to form an unfolding blade 324, and the lower side is provided with a boss edge 325.

Specifically, the locking mechanism 303 includes a locking sleeve 35 and a clutch sleeve 36, the locking sleeve 35 is in the shape of a two-section cylindrical tube, the outer diameter of the upper section cylindrical tube is slightly larger and is a locking portion 351, and the outer diameter of the lower section cylindrical tube is slightly smaller and is a connecting portion 352, which can be inserted into the launching cavity 402. The upper port of the locking part 351 is symmetrically provided with convex lugs 353, the convex lugs 353 can be bent inwards to enable the port of the locking sleeve 35 to form a cavity port for the elastic clamping piece 301 to pass in and out, two sides of the root of the convex lugs 353 are slightly recessed to form shoulder parts 354 so that the shoulder parts can guide and clamp the unfolding blades 324 of the elastic arms 311, the lower parts of the convex lugs 353 are symmetrically provided with a pair of elastic pieces 355, and when the unfolding blades 324 lean against the upper shoulder parts 354, the elastic pieces 355 are bounced into the clamping grooves 323 to prevent the elastic clamping piece 301 from falling out. The connecting portion 352 is integrally formed with a wide groove in the middle, the remaining portion is a symmetrical latch pin 356, a guide groove 357 is formed on the wall of the latch pin 356, the guide groove 357 extends into the locking portion 351, and inner steps 358 are formed at both sides. The upper part of the clutch sleeve 36 is in a flat cut cylindrical shape and is provided with two circular edges and two straight edges, the circular edges form a concave edge 361 inwards, the circular edges form a stop shoulder 362 downwards, an elastic clamping leg 363 extends out of the middle of the stop shoulder 362, a convex block 364 is arranged on the elastic clamping leg 363 outwards, the clutch sleeve 36 is installed in the locking sleeve 35, and the two elastic clamping legs 363 are inserted into the guide groove 357 and can move up and down in the locking sleeve 35 within a certain range.

Specifically, a connection window 422 is formed at the upper part of the guide groove 421 of the launching cavity 402, a release window 423 is formed through the guide groove 421 in a direction perpendicular to the direction, and a protrusion 424 is formed inward at the lower side of the release window 423. The firing chamber 402 may be made of stainless steel for medical applications, and the structure may be formed by stamping, blanking, or laser cutting.

In this embodiment, the catch mechanism includes two rigid jaws 52 and a connecting shaft 54.

The rigid jaw 52 includes a catching portion 521 and a catching groove 522 located at a downstream side of the catching portion 521, a front portion of the catching groove 522 is a sloped edge, and a rear portion of the catching groove 522 is a cam edge 523.

The rigid claw 52 further comprises a reset part 524 positioned on the downstream side of the clamping groove 522, the reset part 524 is provided with a shaft hole 525, and the rear end of the reset part 524 is provided with a protruding tail 526.

The connecting shaft 54 includes a movable portion 541 and a tail shaft provided with a tail hole 548.

The movable portion 541 is provided with an installation groove 542, two opening sides of the installation groove 542 are cut into plane portions 543, the front end of the movable portion 541 is provided with a through hole 544, a middle shaft 545 is installed in the through hole 544, and the middle shaft 545 passes through the shaft holes 525 of the two rigid jaws and installs the two rigid jaws in the installation groove 542.

Blind holes 546 are respectively formed in two sides of the rear end of the movable part 541, a short shaft 547 is installed in each blind hole 546, and the short shaft 547 is guided by the guide groove 421 of the emission cavity 402.

After the outer side of the protruding tail 526 is abutted by the protrusion 424 in the launching cavity 402, the two rigid claws 52 can rotate around the shaft, and the clamping parts 521 open towards the release windows 423 on the two sides.

Moreover, when the cam edge 523 of the two rigid claws 52 in the open state is pushed by the flat part 312 of the elastic clip 301, the two rigid claws 52 can be folded, so that the two sides of the flat part 312 of the elastic clip 301 are respectively clamped into the two clamping slots 522.

In particular, the release hub 501 consists of a rigid pawl 52 and a coupling shaft 54. The rigid claw 52 is a rigid sheet, the middle part of the clamping part 521 is provided with a clamping groove 522, the upper side is an oblique side, the lower side is a cam side 523, the lower part of the cam side 523 is provided with a reset part 524, the center of the reset part 524 is provided with a shaft hole 525, and the lower end is formed into a convex tail 526. The connecting shaft 54 is a three-section type cylindrical revolving body, the front two sections are movable parts 541, a mounting groove 542 is formed in the center, two opening sides of the mounting groove 542 are cut into plane parts 543, two upper section cylinders are provided with through holes 544, a middle shaft 545 can be mounted in the through holes 544 and penetrates through the shaft holes 525 to mount the rigid jaws in the mounting groove 542, blind holes 546 are formed in two sides of the middle section cylinder, two short shafts 547 are mounted in the blind holes 546, the lower section cylinder of the connecting shaft 54 is a tail shaft, and a tail hole 548 is formed in the center. The cam edge 523 of the rigid claw 52 in the open state has an outer convex and inner concave shape, and when the cam edge 523 is pushed by a plane, the rigid claw 52 is influenced by the sliding of the cam pair, so that the rigid claw 52 is closed.

In this embodiment, the continuously releasable gripping device further comprises a transport section 2.

The conveying part 2 comprises a wire winding tube 21, a handle 70, a slide block 28 driving wire 23 and a hand ring 29.

One end of the wire winding tube is connected to the rear end of the firing chamber 402, and the other end of the wire winding tube is connected to the front end of the stem 70.

The slider 28 is in sliding engagement with the stem 70.

One end of the driving wire is connected to a tail hole 548 on the connecting shaft 54, and the other end of the driving wire is connected to the slider 28.

The bracelet 29 is connected with the handle bar 70.

Specifically, the conveying unit 2 includes a lever 70, a slider 28, and a hand ring 29. The front end of the handle rod 70 is provided with a step hole 701, the middle part of the handle rod is provided with a long chute 702, the rear end of the handle rod is provided with a round buckle 703, the step hole 701 is communicated with the long chute 702 through a small through hole 704, the sliding block 28 is of a two-half structure, a sliding cavity 281 is arranged inside the sliding block, the center of the sliding block is provided with a fixing groove 282, a round clamping groove 291 is formed in the bracelet 29, and the round buckle 703 can be installed on the handle. The front end of the driving wire is fixed in the tail hole 548, and the rear end passes through the small through hole 704 and is fixed in the fixing groove 282.

The operation method of the second embodiment described above is as follows:

the slide block 28 is pushed, the movement is transmitted to the elastic clamping piece 301 through the driving wire, the connecting shaft 54 and the rigid clamping claw 52, the elastic clamping piece 301 extends out of the locking mechanism 303, the opening arm 314 is released elastically and restores to a bending state, the clamping arm 315 is opened towards two sides, and the opening size is designed to be between 10 and 20mm according to the functional requirements of the clamping device.

The retracting slide block 28 and the elastic clip 301 are retracted into the launching cavity 402 and limited by the opening of the locking mechanism 303, the opening arm 314 is compressed and straightened, the holding arm 315 is folded, when the step opening 322 is close to the concave edge 361, the holding arm 315 is completely closed, and the holding arm can be repeatedly opened and closed before the concave edge 361. After the clamping arm 315 is closed, the sliding block 28 is pulled continuously, when the pulling force reaches a set value of about 20-30N, the supporting force of the protrusion 364 is exceeded, the protrusion 364 bends inward, the protrusion 364 slides downward to be separated from the connecting window 422 and the guide groove 357, and the clutch sleeve 36 is driven by the clamping sheet to move toward the launching cavity 402 until the stop shoulder 362 abuts against the inner step 358. At this time, the elastic piece 355 is sprung into the clamping groove 323, the locking mechanism 303 locks the clamping state of the elastic clip 301, the rigid claw 52 is opposite to the opening of the release window 423, the movement of the elastic clip 301 is blocked by the locking mechanism 303, under the action of tensile force, the outer side of the protruding tail 526 is abutted by the protrusion 424, so that the rigid claw 52 rotates around the shaft, the clamping part 521 opens towards the release windows 423 on the two sides, the flat part 312 is separated from the clamping groove 522, at this time, the clamping unit 3 is completely separated, the conveying part 2 is retracted, and the clamping unit 3 is clamped on the tissue.

The conveying part 2, the launching cavity 402 and the release center 501 after releasing the clamping unit 3 can be drawn out of the endoscope cavity channel, the clamping unit 3 is refilled, when the filling is carried out, the sliding block 28 is pulled to the bottom, and the rigid claw 52 of the release center 501 is propped by the protrusion 424 to be in an opening state; the clamping unit 3 is loaded from the opening of the emission cavity 402, the clamping foot 356 is inserted into the cavity, the guide groove 357 aligns with the connecting window 422, the protrusion 364 pins the guide groove 357 and the connecting window 422, at this time, the sliding block 28 is pushed, the release center 501 moves forward, the cam edge 523 abuts against the flat part 312 of the elastic clamping piece 301, the clamping part 521 is closed under the sliding influence of the cam edge 523, and the clamping groove 522 is buckled with the flat part 312. The sliding block 28 is pushed and pulled continuously, the elastic clamping piece 301 can be opened and closed normally, the clamping device can be used for clamping again through the endoscope, a plurality of clamping units 3 can be arranged in one operation, and continuous clamping can be realized through replacement of the clamping units 3. The device can be scrapped and disposed according to the rule after one operation, and the reuse of the clamping device in multiple operations is avoided.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A continuously releasable holding device comprises a release center, an elastic clamping piece and a locking mechanism, and is characterized in that the release center is a clamping mechanism which can be opened and closed,

the clamping mechanism can be clamped with the rear end of the elastic clamping piece through closing,

the clamping mechanism can drive the elastic clamping piece to reciprocate by driving the rear end of the elastic clamping piece,

the elastic clamping piece is provided with a locking position, when the clamping mechanism drives the elastic clamping piece to move to the locking position, the elastic clamping piece is locked and limited by the locking mechanism, at the moment, the clamping mechanism continues to move towards the downstream side and can be changed from a closed state to an open state, the clamping mechanism in the open state is separated from the elastic clamping piece,

and the clamping mechanism can be clamped with the rear end of the other elastic clamping piece after being changed from the open state to the closed state again.

2. The continuously releasable holding apparatus as claimed in claim 1, wherein the continuously releasable holding apparatus comprises a plurality of elastic clips arranged in sequence, the elastic clips having a clamping position, and after a front-most one of the elastic clips is released, the elastic clip on a downstream side adjacent to the elastic clip is clamped with the clamping mechanism by moving to the clamping position.

3. The continuously releasable holding device according to claim 2,

the elastic clamping piece comprises two elastic arms and a flat part arranged between the rear ends of the two elastic arms, the flat part is provided with a square hole, the elastic arms comprise a clamping arm and an opening arm arranged between the clamping arm and the flat part, the front end of the clamping arm is provided with a claw holding part, each opening arm is bent towards the direction of the other opening arm, under the closed state of the two elastic arms, the two opening arms and the flat part enclose a triangular space region,

the opening arm is provided with a strip-shaped window and a locking hole positioned on the upstream side of the strip-shaped window,

the two sides of each release window are respectively provided with a guide rib, the downstream side of each release window is provided with a limiting window,

the pipe body is further symmetrically provided with two non-return elastic pieces, the non-return elastic pieces are arranged between the front ends of the two release windows, and the non-return elastic pieces are used for applying resistance to the clamping table of the locking piece.

4. The continuously releasable holding device according to claim 3,

the release center comprises an elastic claw and a connecting shaft,

but continuous release's clamping device still includes transport portion, transport portion includes propelling movement line, drive wire and propelling movement piece, the one end of propelling movement line is passed the guide hole, and with be located the connecting axle upstream side the propelling movement piece links to each other, the drive wire with the fixed orifices links to each other, the propelling movement piece is used for pushing away the elasticity clamping piece towards transmission chamber direction.

5. The continuously releasable holding device according to claim 4,

6. The continuously releasable holding device as claimed in claim 5, wherein the transport section further comprises a wire winding tube, a grip holder, a cover, a pushing slider and a driving slider,

7. The continuously releasable holding device according to claim 1,

the locking mechanism comprises a locking sleeve and a clutch sleeve,

the upstream side of the guide groove is provided with a connecting window,

a projection is provided on the downstream side of the release window,

8. The continuously releasable holding device according to claim 7,

the clamping mechanism comprises two rigid jaws and a connecting shaft,

9. The continuously releasable holding device according to claim 8,

the conveying part comprises a wire winding pipe, a handle rod, a sliding block, a driving wire and a hand ring,

the sliding block is in sliding fit with the handle rod,

the bracelet with the handle pole links to each other.