WO2020000139A1

WO2020000139A1 - Blood vessel clamp applying device

Info

Publication number: WO2020000139A1
Application number: PCT/CN2018/092663
Authority: WO
Inventors: 张国扬
Original assignee: 台湾先进手术医疗器材股份有限公司
Priority date: 2018-06-25
Filing date: 2018-06-25
Publication date: 2020-01-02

Abstract

A blood vessel clamp applying device; the device is provided with a rail within an outer tube, and an elastic clamping abutting shape and a plurality of one-way clamping stopping shapes are disposed backward at intervals at a front end of the rail, a plurality of clips respectively being positioned at the elastic clamping abutting shape and the plurality of one-way clamping stopping shapes; a clamping nozzle that penetrates the outer tube is disposed in front of the rail, and a clip loading push rod and a coating pusher assembly that drives the clamping nozzle to clamp are provided within the outer tube; the clip loading push rod is provided with a prodding end that pushes the foremost clip as well as a plurality of one-way pushing shapes that push the remaining clips respectively; when the clip loading push rod moves forward or backward, the foremost clip may be fed into the clamping nozzle and be clamped, while the remaining clips are pushed to the next one-way clamping stopping shapes for positioning, and thus no spring is used in the described process and the plurality of clips do not push forward and backward so as to achieve an effect of smoother clip feeding movement during operation.

Description

Vascular clamp

Technical field

The invention relates to a structure of a surgical instrument, and in particular, to a blood vessel clip applying device which simultaneously advances all clip nails forward.

Background technique

During the laparoscopic surgery, the blood vessel needs to be closed to avoid blood loss from the incision at the surgical site. At this time, a surgical instrument that closes the blood vessel, such as a vascular clip applier, is used to close the blood vessel. The use method of the vascular clip applier is mainly to extend the long rod-shaped clip applicator unit of the vascular clip applicator into the human body through the opening cut off from the human body surface, and then operate the grip part to drive the clip applier to move the clip. The clamping part at the front end of the unit clamps the blood vessel clamps that are sequentially conveyed to the inside of the clamping part, and the blood vessel clamp is pressed against the blood vessel to close the blood vessel.

The existing vascular clip applier is used in surgery to extend the front-end long rod-shaped clip applier into the human body, for example, Taiwan Patent Application No. 104118985 “Auto Clip Applier” Invention Patent Application (Publication No. No. 201642812), is provided with a clamping unit inside the outer tube, a clamping portion is provided at the front end of the clamping unit, and a clamping unit is provided in cooperation with the clamping portion to urge the blood vessel clamps forward by the force of a compressed spring A first sleeve and a second sleeve are respectively set at the front and rear positions of the rear end of the clamping unit, and the clamping portion is clamped by the action of the first sleeve moving forward, and the first sleeve The front section of the forward process will drive the second casing to move forward, and the second casing will leave the state of simultaneous movement with the first casing at the rear section of the first casing forward process. At this time, the second casing can be subject to Drive backward, and use the action of the second cannula to move forward and backward to drive the clamping unit to advance a blood vessel clamp into the inside of the clamping portion for clamping by the clamping portion.

The above-mentioned clamping unit of the conventional automatic clip applier is pushed forward by the compressed spring, thereby exerting the effect of advancing multiple blood vessel clamps forward. However, due to the lack of guiding design, the spring pushing the clamping unit is easily twisted when the compression degree is large, which hinders the movement of the pushing clamping unit. In addition, the multiple blood vessel clamps are pushed forward and backward in the track. When the operation of the vascular clip applier is caused, the shortcoming of pushing the vascular clip is not smooth, and the vascular clip applier cannot be operated smoothly.

Summary of the invention

Because the existing clip applying device uses a spring to push the clamping unit and the vascular clip is pushed forward and backward, the operation of the vascular clip applier is not smooth. For this reason, the present invention does not use a spring structure to advance the blood vessel clamp and the nails are not pushed back and forth, achieving the effect of smoother nail advancement during operation.

In order to achieve the above object, the present invention provides a vascular clamp device, the structure of which includes:

An outer tube

A jaw track assembly is provided with a nail groove in the outer tube, a track is formed in the nail groove, and a front end of the track is provided with an elastic snap-in shape, and the rear corresponding to the elastic snap-in shape is in front of the track The rear space arrangement is provided with a plurality of one-way clamping shapes. A clamping mouth is provided in front of the nail groove, the clamping mouth penetrates the front end of the outer tube, and the front end of the track faces the rear end of the clamping mouth. A plurality of clips are arranged in the track in a back-and-forth space arrangement. The foremost clips are positioned in the elastic shape, and the remaining clips are positioned in each one-way shape.

A nail pushing rod is inserted into the outer tube and abuts against the top side of the nail groove. A tip piece is formed at the front end of the nail pushing rod, corresponding to the foremost clip at the front end of the nail piece. A toggle end is formed to correspond to the positions of the multiple clamp nails from the first two to the next. A plurality of unidirectional advance shapes and a plurality of unidirectional advance shapes are provided in the arrangement of the top nail push rods in a spaced-back arrangement. Projects into the track and is located behind the mating clips; and

A covering push rod assembly is provided with a covering push rod in the outer tube. A front end of the covering push rod is combined with a jaw clamp, and the jaw clamp is used to drive the jaw clamp.

Further, the elastic latching shape according to the present invention is formed with a positioning spring piece in the middle of the bottom of the nail groove, the positioning spring piece is a piece with the front end upturned, and the toggle end is an inverted U-shaped piece and is The positioning springs are staggered left and right.

Further, the plurality of one-way clamping shapes according to the present invention are upwardly facing pieces, and the plurality of one-way clamping shapes are arranged in the middle of the bottom of the nail groove, and the clamps The nails are stuck in front of each one-way clamping shape; the plurality of one-way pushing shapes are a pair of one-way ratchet teeth, and each pair of one-way ratchet teeth is staggered left and right with each one-way clamping shape.

Further, the chuck according to the present invention is in a state where the front side is inclined downward, an opening is formed at the front end of the track, and a guide elastic sheet is formed in the middle of the bottom of the nail groove at a position corresponding to the opening. The shrapnel is a body with the front end upturned.

Further, in the present invention, a clamping rib is formed on each of the bottom surfaces of the left and right sides of the clamping mouth, and a head and a neck are respectively formed at the front and rear positions of the front end of the covering push rod. The rear end of the coupler is recessed forward with a sliding groove. A necked portion is formed at the rear end of the sliding groove. The length of the head is shorter than the length of the sliding groove. The head is slidably provided on the sliding groove. A sliding groove, the neck passes through the necked portion, and the length of the neck extending back and forth is longer than the length of the necked portion. A clamping groove opened at the front is formed on the top of the jaw clamp. The clamping groove is a groove with a wide front and a narrow rear, and the front end of the clamping groove is sleeved on the rear end of the ribs of the two clamping nozzles.

Furthermore, the jaw track assembly according to the present invention is fixedly provided with a jaw tie rod in the outer tube. The jaw tie rod is a long piece extending in the front-rear direction and a jaw piece is provided at the front end. The jaw is formed bifurcated at the front end of the jaw piece, the nail groove is fixedly provided on the top surface of the jaw pull rod; a driving component is combined with the rear end of the outer tube, and the driving component is connected by the rear And driving the nail push rod and the cover push rod assembly.

Preferably, the rear end of the upper nail push rod and the overlying push rod of the present invention respectively penetrate backward through the rear end of the outer tube, and the front and rear positions of the rear end portion of the upper nail push rod are respectively A long hole behind the nail push rod and a hole for the nail push rod are arranged, and a long hole for the push rod is matched with the position of the long hole behind the nail push rod. A rear end of the covering push rod extends a hook piece portion, and a notch is formed inward at the side of the hook piece portion, and a rear side adjacent to the notch is formed at the rear end of the hook piece portion. A barb has a height that is narrower than the depth of the notch, and the front and rear positions of the nail push rod holes are within the range of the notch.

Preferably, the driving assembly according to the present invention is combined with a sliding sleeve at the rear end of the outer tube. The sliding sleeve is a pipe body extending in the front-rear direction, and the front end of the sliding sleeve is sleeved and fixed on the sleeve. The rear end of the outer tube is matched with the rear long hole of the upper nail push rod and the position of the overlying push rod hole, and a long hole of the overlying push rod positioning pin is penetrated in the sliding sleeve to cooperate with the upper nail. At the position of the push rod hole and the notch, a long hole of the feed rod positioning pin is penetrated in the sliding sleeve, and an inclined surface is formed at the front end of the long hole of the feed rod positioning pin; the outer tube is provided with the cover pusher. An overlying pusher slide sleeve is sleeved at the position of the long hole of the rod positioning pin. The overlying pusher slide sleeve penetrates an overlying pusher positioning pin hole, and an overlying insert is fixed in the overlying pusher positioning pin hole. A pusher positioning pin, the overlying pusher positioning pin passes through the long hole behind the upper nailed pusher, the overlying pusher positioning pin is inserted in the overlying pusher hole; the sliding sleeve is provided with the feeding material A feeding rod sliding sleeve is sleeved at the position of the long hole of the rod positioning pin. The feeding rod sliding sleeve penetrates a feeding rod positioning pin hole, and the feeding rod positioning pin hole is cut with the sliding sleeve. A long hole in the same direction, a feeding rod positioning pin is inserted into the feeding rod positioning pin hole, the feeding rod positioning pin passes through the recess, and the feeding rod positioning pin is inserted in the upper nail push rod hole.

Preferably, in the present invention, a spring positioning pin hole is penetrated at the rear end of the sliding sleeve, a spring positioning pin is inserted and fixed in the spring positioning pin hole, and a spring hook hole is provided in the inverted hook. A cover spring is hooked between the spring hook hole and the spring positioning pin, so that the cover push rod positioning pin abuts the rear end of the long hole of the cover push rod positioning pin.

When the present invention is used, the rear end is connected with an existing or applicable driving component, and the driving pin is used to drive the nail push rod forward, and the front end of the nail push rod is used to nail the foremost clamp of the track toward Push forward to make the front most nails out of the elastic latching shape and enter the front mouth of the mouth. At the same time, drive the remaining nails forward with multiple unidirectional advance shapes, so that the second to the most Each clip is supplemented forward to the original position of the advanced clip, and then the upper nail pusher is driven back. When the foremost clamping nail enters the clamping mouth, the driving component drives the overlying push rod to move forward, and the overlying push rod pushes the clamp mouth clamp forward to drive the clamping mouth to clamp the nail. To achieve the effect of applying nails to blood vessels and other human tissues to stop bleeding.

The advantages of the present invention are:

Because the compression spring is not provided in the structure as the driving force for the forward movement of the nails, and the multiple nails are driven by the unidirectional ratchets of the above nail push rods, there is no pushing between the multiple nails. With additional resistance, there will not be a twisted spring hindering the movement of the mechanism in the track, so the nail-feeding operation of the present invention can be made smoother.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a preferred embodiment of the present invention;

2 is an exploded view of a preferred embodiment of the present invention;

3 is an exploded view of a part of a preferred embodiment of the present invention;

4 is a sectional view of a front end portion of a preferred embodiment of the present invention;

5 is an exploded view of a driving assembly according to a preferred embodiment of the present invention;

6 is a top view of a preferred embodiment of the present invention;

7 is a bottom view of a preferred embodiment of the present invention;

FIG. 8 is a schematic diagram of implementation actions in the latter stage of the preferred embodiment of the present invention; FIG.

FIG. 9 is a schematic diagram of the operation of pushing nails by the nail push rod according to the preferred embodiment of the present invention; FIG.

10 is a cross-sectional schematic diagram of pushing nails by a nail pusher according to a preferred embodiment of the present invention;

FIG. 11 is a schematic diagram of the clamping action of the driving nozzle according to the preferred embodiment of the present invention.

Symbol Description:

10 outer tube 11 outer tube fixing long hole

20 pliers mouth rail assembly 21 pliers mouth lever

211 pliers mouth long rod hole 212 pliers mouth rod fixing hole

22 pliers nozzle 221 clamp nozzle

222 clip mouth ribs 23 nail grooves

231 track: 232 openings

233 positioning shrapnel 234 guide shrapnel

235 one-way card shape 24 clip nails

30 upper nail putter 301 front rod

302 rear section lever 31 unidirectional ratchet

32 dials 321 dials

33 Holes on the back of the nail putter 34 Holes on the nail putter

35 Long hole in front of the nail putter 40 Overlay putter assembly

41 Override in putter 411 Override in putter hole

412 Covered in the long hole of the putter 413 Hook section

414 notch 415 undercut

416 spring hook hole 417 head

418 neck 42 pliers mouth clamp

421 Sliding groove 422 neck constriction

423 clamping slot 50 drive assembly

51 sliding sleeve 511 inserts

512 fixing bolt hole 513 covering the long hole of the positioning pin of the push rod

514 long hole of the positioning pin of the feeding rod 515 inclined surface

516 spring positioning pin hole

53 Covered into the push rod slide sleeve 531 Covered into the push rod positioning pin hole

54 Covered pusher positioning pin 55 Feeding rod sliding sleeve

551 Feeder pin positioning pin 56 Feeder pin positioning pin

57-Fixing sleeve 571 bolt hole bolt hole

58 spring positioning pin 59 covering the spring

A half tube shell

detailed description

In order to understand the technical features and practical effects of the present invention in detail, and can be implemented in accordance with the contents of the description, the preferred embodiments shown in the drawings are further described in detail below.

Please refer to the preferred embodiment of the present invention as shown in FIG. 1 to FIG. 7. The present invention provides a vascular clamp device, which includes an outer tube 10, a jaw track assembly 20 passing through the outer tube 10, A nail pusher 30 inserted in the outer tube 10, a cover pusher assembly 40 inserted in the outer tube 10, and a drive assembly 50 connected to the rear end of the outer tube 10, wherein:

The outer tube 10 is a circular long tube body extending in the front-rear direction. A rear end portion of the outer tube 10 penetrates an outer tube fixing slot 11 along a radial direction of the outer tube 10. The outer tube fixing slot 11 is A long hole extending in the front-back direction.

Please refer to FIG. 2 to FIG. 4, the jaw track assembly 20 includes a jaw pull rod 21, a jaw member 22 and a nail groove 23. The jaw rod 21 is a long piece extending in the front-rear direction and is fixed in the outer tube 10. The rear end of the jaw rod 21 penetrates the rear end of the outer tube 10 backward. The rear end is provided with a long hole 211 of the jaw rod, corresponding to the position of the fixed hole 11 of the outer tube. A long hole 212 is fixed to the jaw rod 21; the jaw piece 22 is connected to the jaw At the front end of the pull rod 21, the front end of the jaw member 22 is bifurcated to form a gripping mouth 221, the gripping mouth 221 passes forward from the front end of the outer tube 10, and the gripping mouth 221 is inclined downward with the front side. A clip rib 222 is formed on the bottom surfaces of the left and right sides of the clamping mouth 221. The nail groove 23 is fixed and fixed on the top surface of the jaw rod 21, and the nail groove 23 is a long groove extending in the front-back direction. A track 231 extending in the front-rear direction is formed in 23. The front end of the track 231 is directly opposite to the rear end of the clamping mouth 221. An opening 232 is formed at the front end of the track 231.

A plurality of clip nails 24 are arranged in the track 231 in a front and rear spaced arrangement, corresponding to the position of the front end of the track 231, a positioning spring piece 233 is formed in the middle of the bottom of the nail groove 23, and the positioning spring piece 233 is on the front end. The warped sheet body, the positioning spring piece 233 is an elastic snapping shape that allows each clip 24 to pass forward in one direction, and the frontmost clip 24 snaps between the positioning spring piece 233 and the inner wall of the track 231; At a position corresponding to the opening 232, a guide spring piece 234 is formed in the middle of the bottom of the nail groove 23, and the guide spring piece 234 is an upturned piece at the front end and is located directly in front of the positioning spring piece 233; at the bottom of the nail groove 23 The arrangement of the front and back intervals in the middle is provided with a plurality of one-way clamping shapes 235. The one-way clamping shape 235 at the forefront is spaced from the positioning spring piece 233. The plurality of one-way clamping shapes 235 are respectively tipped up. The sheet body is located directly behind the positioning spring piece 233, and the plurality of clip nails 24 after the second one from the front are respectively locked and positioned in front of each one-way clamping shape 235.

The upper nail putter 30 includes a front pole 301 and a rear pole 302 respectively located on the front and rear sides. The upper nail putter 30 is formed by connecting the front pole 301 and the rear pole 302 in front and rear. The long nail piece body is inserted into the outer tube 10 and abuts on the top surface of the nail groove 23, corresponding to the positions of the two following multiple clamp nails 24 A plurality of pairs of one-way ratchet teeth 31 are formed on the bottom surface of the nail pusher 30 in a back-and-forth arrangement. The plurality of one-way ratchet teeth 31 protrude downward into the track 231 and are respectively located in the mating clips 24. In the rear, a plurality of pairs of one-way ratchet teeth 31 are formed on the bottom surface of the front section rod 301 as a one-way pushing shape; a front end of the front section rod 301 of the nail push rod 30 extends forward to form a nail piece 32, A toggle end 321 is formed at the front end of the nail piece 32. The toggle end 321 is an inverted U-shaped piece and is located at the rear side of the most forward clip 24; the toggle end 321 is staggered from the left and right of the positioning spring piece 233. , So that when the toggle end 321 moves forward and backward, it will not interfere with the positioning spring 233 and the guide spring 234; multiple pairs of unidirectional ratchet teeth 31 and each 235 shifted to the left and right clamping shape, such that when the plurality of one-way ratchet 31 moves back and forth, 235 does not interfere with the plurality of unidirectional clamping shape.

The rear end of the nail pusher 30 penetrates the rear end of the outer tube 10 backward, and a rear hole 33 and a nail of the nail pusher are respectively formed at the front and rear positions of the rear end of the nail pusher 30. Pusher hole 34, the rear long hole 33 of the upper nail pusher is a long hole extending in the front-rear direction, and the rear long hole 33 of the upper nail pusher and the position of the long hole 211 of the jaw pull rod overlap each other, corresponding to the outer tube The position of the long hole 11 is fixed, and a front long hole 35 of the top nail pusher is penetrated in the top nail pusher 30, and the front long hole 35 of the top nail push rod is located in front of the long hole 33 behind the top nail push rod. The jaw pull rod fixing hole 212 is located below the front end of the front nail hole front long hole 35. The above nail nail back hole 33, nail nail rod hole 34, and nail nail front hole 35 are all worn through. It is provided at this rear section lever 302.

The covering push rod assembly 40 includes a covering push rod 41 and a jaw clamp 42. The covering push rod 41 is an elongated sheet body extending in the front-rear direction and abuts against the bottom surface of the jaw pull rod 21. The rear end of the covering push rod 41 penetrates rearward of the outer tube 10. According to the position of the long hole 33 after the nail pusher, a cover pusher hole 411 is formed at the rear end of the cover pusher 41, corresponding to the position of the outer tube fixing long hole 11, The rod 41 is provided with a covering pusher long hole 412, and the above-mentioned jaw pull rod fixing hole 212 is located above the front end of the covering pusher long hole 412, and a hook is extended rearward at the rear end of the covering pusher 41 The sheet portion 413 is recessed inwardly at the side of the hook portion 413 to form a notch 414. The front and rear positions of the above-mentioned nail push rod hole 34 are located within the range of the notch 414. The rear end of the rear section lever 302 is bent toward the inside of the notch 414, so that the nail pusher hole 34 is located within the range of the inside of the notch 414, and an inverted hook 415 is formed at the rear of the hook portion 413. The inverted hook 415 is adjacent to the rear side of the notch 414. The height of the inverted hook 415 is narrower than the depth of the notch 414. A spring hook hole 416 is formed in the inverted hook 415, and the cover is pushed in. Pole 41 Front and rear positions, respectively right and left end portions of the head portion 417 of a wide width and a horizontal width narrower neck portion 418 is formed.

The jaw clamp 42 is coupled to the front end of the covering pusher 41. The jaw clamp 42 is an elongated block extending in the front-rear direction. The rear end of the jaw clamp 42 faces forward. A sliding groove 421 is recessed, and a necked portion 422 having a narrower left and right width than the rest of the front side is formed at the rear end of the sliding groove 421. The head 417 covering the push rod 41 is slidably provided in the sliding groove. 421, the length of the head 417 is shorter than the length of the sliding groove 421, the neck 418 passes through the necked portion 422, and the length of the neck 418 extends longer than the length of the necked portion 422 A clamping groove 423 is formed on the top of the jaw clamp 42 and is open at the front. The clamping groove 423 is a groove that gradually widens from back to front. The front end of the clamping groove 423 fits in the groove. The rear ends of the two jaw ribs 222.

Please refer to FIG. 2 and FIGS. 5 to 7. The driving assembly 50 is provided with a sliding sleeve 51. The sliding sleeve 51 is a circular pipe body extending in the front-rear direction and includes two half-shells A which are fastened up and down. The shape of the outer tube fixing long hole 11 is formed with inserts 511 on opposite sides of the inner peripheral surface of the front end of the sliding sleeve 51. The inserts 511 are inserted into the outer tube fixing long hole 11 and positioned so that the slide sleeve The front end of the tube 51 is sleeved and fixed at the rear end of the outer tube 10, a fixing pin hole 512 is penetrated at the sliding sleeve 51 provided with the insert 511, and a fixing pin 52 is inserted in the fixing pin hole 512. The fixing pin 72 passes through the front end portion of the front long hole 55 of the nail push rod and the front end portion of the long hole 612 covering the push rod. The fixing pin 72 passes through the jaw rod of the jaw rod 21 and is fixed in the middle. The hole 212 is fixedly disposed in the outer tube 10.

According to the positions of the rear hole 33 of the nail push rod, the long hole 211 of the jaw rod, and the cover hole 411, a sliding sleeve 51 penetrates a cover pin long hole 513 in the radial direction, The long hole 513 of the covering pin positioning pin is a long hole extending in the front-rear direction. According to the positions of the nail push rod hole 34 and the notch 414, the sliding sleeve 51 is positioned through a feeding rod in the radial direction. A pin long hole 514, which is a long hole extending in the front-rear direction, forms an inclined surface 515 at the front end of the long pin 514 of the loading rod.

An overlying pusher slide sleeve 53 is sleeved at the position where the sliding sleeve 51 is provided with the overlying pusher positioning pin long hole 513, and an overlying pusher positioning pin is penetrated radially in the overlying pusher sliding sleeve 53. A hole 531 is inserted into the overhanging pusher positioning pin hole 531, and an overhanging pusher positioning pin 54 is inserted and fixed. The overhanging pusher positioning pin 54 passes through the long hole 33 and the length of the jaw pull rod Hole 211, the overlying pusher positioning pin 54 is inserted in the overlying pusher hole 411 of the overlying pusher 41, and can pass through the overlying pusher positioning pin 54 when the overlying pusher slide sleeve 53 advances The covering pusher 41 is driven forward.

A feeding rod sliding sleeve 55 is sleeved at the position where the sliding sleeve 51 is provided with the feeding rod positioning pin long hole 514. The feeding rod sliding sleeve 55 penetrates a feeding rod positioning pin hole 551 radially. The feeding rod positioning pin hole 551 is a long hole in the same direction as the tangential direction of the sliding sleeve 51. A feeding rod positioning pin 56 is inserted and fixed in the feeding rod positioning pin hole 551, and the feeding rod positioning pin 56 passes through. Through the notch 414, the feeding rod positioning pin 56 is inserted into the nail driving rod hole 34 at the rear end of the nail driving rod 30.

Please refer to FIG. 8, because the feeding rod positioning pin 56 leans to the inside of the notch 414, when the covering push rod 41 is driven forward by the covering push rod sliding sleeve 53, the covering push rod 41 The barb 415 at the rear end can catch the feeding rod positioning pin 56 to advance the nail push rod 30 and the covering push rod 41. When the feeding rod positioning pin 56 advances to the inclined surface 515, it will Move along the inclined surface 515 and disengage from the barb 415. At this time, the loading rod sliding sleeve 55 and the loading rod positioning pin 56 can be driven to move backward, thereby driving the nail push rod 30 to move backward, so that the The nail pusher 30 moves back and forth once during the above process. When the upper nail pusher 30 returns to its original position and the overturning pusher 61 also returns to the original position backward, the barb 415 passes back through the loading rod positioning pin 56 to make the loading rod positioning pin 56 fall again. Into the notch 414, the inverted hook 415 returns to the position capable of hooking the loading rod positioning pin 56 forward.

Please refer to FIG. 5, a spring positioning pin hole 516 is penetrated at the rear end of the sliding sleeve 51, and the spring positioning pin hole 516 is penetrated at the rear end of the two half-shell A A fixing sleeve 57 is sleeved at the rear end, a bolt hole 571 is penetrated radially through the fixing sleeve 57, a spring positioning pin 58 is inserted in the bolt hole 571, and the spring positioning pin 58 is inserted in the spring positioning pin hole 516. A cover spring 59 is hooked between the spring hook hole 416 and the spring positioning pin hole 516 at the rear end of the cover push rod 41, so that the cover push rod positioning pin 54 abuts against the cover The rear end of the long hole 513 of the push rod positioning pin.

When the above-mentioned preferred embodiment of the present invention is used, for example, the grip unit of the existing automatic clip applier is used to drive the cover sliding sleeve 53 and the loading rod sliding sleeve 55 to move, but the present preferred implementation is driven. The driving mechanism of the exemplary action is not limited to the existing gripping unit, as long as it is a mechanism capable of driving the cover pusher 41 and the nail pusher 30 in accordance with the operation mode of the preferred embodiment, it can drive the preferred The driving mechanism of the embodiment.

Please refer to FIG. 8. When the preferred embodiment of the present invention is used, the overlying pusher slide sleeve 53 is driven forward, and the overlying pusher slide sleeve 53 drives the overlying pusher with the overlying pusher positioning pin 54. The rod 41 moves forward, and during the forward movement of the overlying pusher 41, the barb 415 at the rear end of the overlying pusher 41 hooks the loading rod positioning pin 56 so that the upper nail pusher 30 and The covering pusher 41 advances together. When the loading rod positioning pin 56 advances to the inclined surface 515, it moves along the inclined surface 515 and leaves the barb 415. At this time, the covering pusher 41 continues to move forward. While the overlying push rod 41 continues to move forward, the driving mechanism drives the feeding rod sliding sleeve 55 to move backward, so that the feeding rod sliding sleeve 55 drives the nail driving rod with the feeding rod positioning pin 56. 30 moves backward, that is, during the entire stroke covered by the push rod 41, the nail push rod 30 performs a stroke operation of moving forward and backward once.

When the upper nail push rod 30 performs a stroke operation of one forward and backward movement, please refer to FIG. 9 and FIG. 10. The toggle end 321 at the front end of the upper nail push rod 30 pushes the front nail 24 forward. The foremost nail 24 is pushed forward from the back into the jaw 221 of the jaw member 22, and then the upper nail pusher 30 is moved backward, so that the nail 24 held in the jaw 221 is received by the jaw. The clamping of the mouth 221 has the effect of clamping the blood vessels. When the foremost clip 24 is pushed forward by the toggle end 321 of the upper nail pusher 30, the multiple pairs of one-way ratchet teeth 31 of the upper nail pusher 30 also move forward, and the most forward pair The one-way ratchet 31 pushes the matched nails 24, that is, pushes the second one from the first one to the positioning spring 233 for positioning; the remaining pairs of one-way ratchet 31 also push forward The mating clips 24 advance, causing each clip 24 to move forward over the next one-way clamping shape 235 of the front and stay in place there; then the top push rod 30 moves backward, the toggle end 321 and each pair The one-way ratchet teeth 31 respectively pass back to the original positions of the clip nails 24 which have been positioned forward and backward, and wait for the next clip nails 24 to be pushed forward.

The present invention further provides the guide spring piece 234 at the opening 232 at the front end of the track 231. Please refer to FIG. 10, when the foremost clip 24 enters the clip 221 forward, the clip The rear end of 24 will be pushed up and up by the guide elastic piece 234, so that the clip nail 24 can be tilted to adapt to the angle of the clip mouth 221, so that the clip nail 24 can move more smoothly into the clip mouth 221, To a greater extent, the clip 24 is prevented from getting stuck at the opening 232.

During the advancement of the override pusher 41, please refer to FIG. 11. When the override pusher 41 starts to move forward, the head 417 at the front end of the override pusher 41 is in the jaw clamp 42. The sliding groove 421 slides forward. At this time, the covering push rod 41 does not drive the jaw clamp 42 to move forward. After a foremost nail 24 is sent into the mouthpiece 221, the head 417 of the covering pusher 41 is pushed to the front surface of the sliding groove 421. At this time, the covering pusher 41 drives the clamp The mouth clamp 42 is advanced, and the clamping grooves 423 of the forceps mouth clamp 42 are used to press the two clamp mouth ribs 222 to abut, so that the clamp mouth 221 clamps the inner clamp nail 24. When the overriding pusher 41 moves backward, the head 417 slides backward in the sliding groove 421 of the jaw clamp 42, and at this time, the overriding pusher 41 does not drive the jaw clamping backward. The retractor 42 can keep the clamping mouth 221 in a clamped state for a period of time. When it covers the push rod 41 and then moves backward, the head 417 hooks the neck portion 422 of the clamp mouth clamp 42 to drive. The jaw clamp 42 is moved backward, at this time, the jaw rib 222 is released so that the jaw 221 is opened.

The above are merely preferred embodiments of the present invention, and are not intended to limit the scope of the rights claimed by the present invention. Any other equivalent changes or modifications made without departing from the spirit disclosed by the present invention should be included in the present invention. Within the scope of patent application.

Claims

A vascular clip applying device, comprising:

An outer tube

A jaw track assembly is provided with a nail groove in the outer tube, a track is formed in the nail groove, and a front end of the track is provided with an elastic snap-in shape, and the rear corresponding to the elastic snap-in shape is in front of the track The rear space arrangement is provided with a plurality of one-way clamping shapes. A clamping mouth is provided in front of the nail groove, the clamping mouth penetrates the front end of the outer tube, and the front end of the track faces the rear end of the clamping mouth. A plurality of clips are arranged in the track in a back-and-forth space arrangement. The foremost clips are positioned in the elastic shape, and the remaining clips are positioned in each one-way shape.

A nail pushing rod is inserted into the outer tube and abuts against the top side of the nail groove. A tip piece is formed at the front end of the nail pushing rod, corresponding to the foremost clip at the front end of the nail piece. A toggle end is formed to correspond to the positions of the multiple clamp nails from the first two to the next. A plurality of unidirectional advance shapes and a plurality of unidirectional advance shapes are provided in the arrangement of the top nail push rods in a spaced-back arrangement. Projects into the track and is located behind the mating clips; and

A covering push rod assembly is provided with a covering push rod in the outer tube. A front end of the covering push rod is combined with a jaw clamp, and the jaw clamp is used to drive the jaw clamp.
The vascular clip applying device according to claim 1, wherein the elastic snap-in shape is formed with a positioning spring sheet in the middle of the bottom of the nail groove, and the positioning spring sheet is a sheet body with the front end upturned, so The toggle end is an inverted U-shaped piece and is staggered left and right with the positioning elastic piece.
The vascular clip applying device according to claim 2, wherein the plurality of one-way clamping shapes are respectively a piece with an upturned front end, and the plurality of one-way clamping shapes are arranged in a front-to-back spaced arrangement. In the middle of the bottom of the nail groove, the clips are stuck in front of the one-way clamping shapes; the plurality of one-way pushing shapes are a pair of one-way ratchet teeth, and each pair of one-way ratchet teeth and each The one-way clamping shape is staggered left and right.
The vascular clamp device according to claim 1, wherein the clamp mouth is inclined downward from the front side, an opening is formed at the front end of the track, and the position corresponding to the opening is at the nail. A guide elastic piece is formed in the middle of the bottom of the groove, and the guide elastic piece is a sheet body with the front end upturned.
The vascular clamp device according to claim 4, wherein a clamp rib is formed on each of the bottom surfaces of the left and right sides of the clamp mouth, and a front and rear position of the covering push rod is formed respectively. A head and a neck, a sliding groove is recessed forward from the rear end of the jaw clamp, and a necked portion is formed at the rear end of the sliding groove, and the length of the head is shorter than the sliding length. The length of the front and rear of the groove, the head is slidably disposed in the sliding groove, the neck passes through the necked portion, and the length of the neck extended back and forth is longer than the length of the necked portion, A clamping groove is formed on the top of the clamping groove. The clamping groove is a groove that is wide at the front and narrow at the rear. The front end of the clamping groove is sleeved at the rear end of the ribs of the two clamps.
The vascular clamp device according to claim 5, wherein the jaw track assembly is fixedly provided with a jaw rod in the outer tube, and the jaw rod is a long piece extending in the front-rear direction. A jaw member is provided at the front end, the jaw is formed bifurcated at the front end of the jaw member, and the nail groove is fixed on the top surface of the jaw rod; behind the outer tube, A driving component is coupled to the end, and the driving component engages and drives the nail push rod and the cover push rod component from the rear.
The vascular clip applicator according to claim 6, wherein the rear ends of the upper nail push rod and the overlying push rod respectively penetrate backward through the rear end of the outer tube, on which A rear long hole of the upper nail push rod and a long hole of the upper nail push rod are respectively arranged at the front and rear positions of the rear end of the nail push rod. A covering hole is provided in the part, and a hook piece portion is extended rearwardly at the rear end of the covering push rod. The side of the hook piece is recessed inward to form a notch, which is adjacent to the notch. A back hook is formed at the rear end of the hook piece portion, the height of the back hook is narrower than the depth of the notch, and the front and rear positions of the nail push rod hole are located within the range of the notch.
The vascular clamp device according to claim 7, wherein the driving component is combined with a sliding sleeve at the rear end of the outer tube, and the sliding sleeve is a tube body extending in the front-rear direction. The front end of the sliding sleeve is fixed to the rear end of the outer tube, and cooperates with the position of the long hole behind the nail push rod and the position of the covering push rod hole, and a covering push rod is penetrated by the sliding sleeve. The long hole of the positioning pin matches the position of the push pin hole of the nail and the position of the notch. A long hole of the positioning pin of the feeding rod is penetrated in the sliding sleeve, and an inclined surface is formed at the front end of the long hole of the positioning pin of the feeding rod. ; A cover slipper sleeve is sleeved at the position where the outer tube is provided with the long hole of the cover slipper pin, and the cover slipper sleeve penetrates a hole of the cover slipper pin at the cover. A pusher positioning pin hole is inserted to fix an overlying pusher positioning pin, the overlying pusher positioning pin passes through the long hole behind the nailed pusher, and the overlying pusher positioning pin is inserted in the overlying pusher hole ; A feeding rod sliding sleeve is sleeved at the position where the sliding sleeve is provided with the feeding rod positioning pin long hole, and the feeding rod sliding sleeve penetrates a feeding rod positioning pin hole The positioning pin hole of the feeding rod is a long hole in the same direction as the tangent direction of the sliding sleeve. A positioning pin of the feeding rod is inserted into the positioning pin hole of the feeding rod, and the positioning pin of the feeding rod passes through the recess. , The positioning pin of the feeding rod is inserted into the hole of the push rod of the nail.
The vascular clamp device according to claim 8, wherein a spring positioning pin hole is penetrated at the rear end of the sliding sleeve, and a spring positioning pin is inserted and fixed in the spring positioning pin hole. A spring hook hole is provided through the reverse hook, and a cover spring is hooked between the spring hook hole and the spring positioning pin, so that the cover push rod positioning pin abuts against the cover push rod positioning pin. The back of the slot.