TW201932076A - Surgical clip applier - Google Patents

Abstract

A surgical clip applier has an outer tube and a rail in the outer tube. The rail has multiple levers and stoppers being spaced placed. The levers and the stoppers position multiple clips respectively. A distal end of the rail has a jaw structure. The outer tube has a clip pusher and jaw driving unit. A moving end is formed on a distal end of the pusher. When the pusher moves a back/forward cycle, A first clip is moved into the jaw structure and other clips are moved toward for one step. In this present invention, no spring is used and each clip is moved independently to prevent moving disorder.

Description

Vascular application device

The present invention relates to the construction of a surgical instrument, and more particularly to a blood vessel applying device that simultaneously advances all of the staples.

In the course of laparoscopic surgery, the blood vessel needs to be closed to avoid blood loss from the incision of the surgical site, and a surgical instrument that closes the blood vessel, such as a blood vessel clip applier, is used to close the blood vessel. The above-mentioned blood vessel clip applicator is mainly used for inserting a long rod-shaped clip unit of a blood vessel clipper into the human body through an opening of the human body surface, and then operating the grip portion to drive the clip unit to actuate the clip. The nip portion at the distal end of the unit is sequentially attached to the blood vessel clip inside the nip portion, and the blood vessel clamp is pressed against the blood vessel to close the blood vessel.

The existing blood vessel clip applicator is used to extend the front end long rod-shaped clip-clamping unit into the human body during the operation, for example, the TW Patent Application No. 104118985 "Automatic Applicator" invention patent application (Public No. 201642812) No.) is provided with a clamping unit inside the outer sleeve, and a clamping portion is provided at the front end of the clamping unit, and the clamping portion is provided with a clamping unit that pushes each blood vessel clamp forward by the force of the compressed spring. a first sleeve and a second sleeve are respectively disposed in the front and rear positions of the rear end portion of the clamping unit, and the clamping portion is clamped by the forward movement of the first sleeve, and the first sleeve is moved forward. The front section will drive the second sleeve to move forward, and the second sleeve will be disengaged from the first sleeve in the rear stage of the first sleeve forwarding process. At this time, the second sleeve can be driven to move backward, utilizing The movement of the second sleeve forward and backward can drive the insertion unit to advance a blood vessel clamp into the inner side of the clamping portion for clamping the clamping portion.

The above-described conventional clip applier of the automatic clip applier pushes the compressed spring forward, thereby exerting the effect of advancing a plurality of blood vessel clips. However, due to the lack of guiding design, the spring for pushing the clip unit is easy to be twisted when the degree of compression is large, hindering the action of pushing the clip unit, and the plurality of blood vessels are clamped in the rail to be pushed forward and backward. When the blood vessel clipper is operated, the operation of the blood vessel clamp is not smooth, and the blood vessel clipper cannot be smoothly operated.

Since the existing clip applying device uses a spring to push the clip unit and the blood vessel clip is pushed forward and backward, the operation of the blood vessel clipper is not smooth. To this end, the present invention does not use a spring structure to advance the blood vessel clamp and the staples are not pushed back and forth, thereby achieving a smoother effect of the nail insertion operation during operation.

In order to achieve the above object, the present invention provides a blood vessel applicator device, the configuration of which includes:

An outer tube;

a jaw rail assembly, a nail groove is disposed in the outer tube, a track is formed in the nail groove, and a resilient snap-fit shape is arranged at a front end portion of the track, corresponding to the rear of the elastic snap-in shape, in the track a plurality of one-way card shapes are arranged in a front-rear arrangement, and a pinch is provided in front of the nail groove, the pin mouth passes through the front end of the outer tube, and the front end of the track is opposite to the rear end of the nozzle a plurality of clips are arranged in the track in the front and rear intervals, and the foremost clips are positioned in the elastic snap-in shape, and the remaining plurality of clips are respectively locked in the shape of each one-way card;

a top push rod is disposed in the outer tube and abuts against a top side of the nail groove, and a nail piece is formed at a front end of the upper nail push rod, corresponding to the foremost clip on the nail piece The front end forms a dial end corresponding to the position of the plurality of clips after the two from the front, and the arrangement of the upper and lower push rods is provided with a plurality of one-way advance shapes, and a plurality of one-way advancements. Forming into the track and respectively located behind the mating staples;

A pusher assembly is placed in the outer tube, and a pusher is placed in the outer tube. A jaw clamp is coupled to the front end of the pusher, and the jaw is clamped by the jaw clamp.

Further, the elastic snap-on shape of the present invention is such that a positioning elastic piece is formed in the middle of the bottom of the nail groove, the positioning elastic piece is a front end upturned piece body, and the dialing end is an inverted U-shaped piece body and The positioning elastic piece is staggered left and right.

Further, the plurality of one-way card shapes of the present invention are respectively the front end upturned sheet body, and the plurality of one-way card shapes are arranged in a front and rear spaced manner in the middle of the bottom of the nail groove, the clips The staples are in front of each of the one-way jam shapes; the plurality of one-way advance shapes are respectively a pair of one-way ratchets, and each pair of one-way ratchets is offset from the left and right ones in a shape.

Further, the collet of the present invention is a downwardly inclined state of the front side, and an opening is formed at a front end of the rail, and a guiding elastic piece is formed at a position corresponding to the opening in the middle of the bottom of the nail groove, the guiding elastic piece It is the front body that is upturned.

Further, the present invention forms a nipple rib on each of the left and right bottom surfaces of the collet, and a head portion and a neck portion are respectively formed at the front and rear positions of the front end portion of the pusher rod, and the jaw clip is formed at the front and rear positions of the front end portion of the push rod The rear end of the clutch is provided with a sliding groove facing the front recess, and a neck portion is formed at the rear end of the sliding groove. The length of the front and rear of the head is shorter than the length of the front and rear of the sliding groove, and the head is slidably disposed at the front end. a sliding groove, the neck portion passes through the neck portion, and a length of the neck portion extending forward and backward is greater than a front and rear length of the neck portion, and a clamping groove opening at the front is formed at a top of the jaw clamp, The clamping groove is a front wide and a narrow groove, and the front end of the clamping groove is sleeved at the rear end of the two jaw ribs.

Further, the jaw rail assembly of the present invention is fixedly disposed in the outer tube with a jaw pull rod, the jaw rod is a long piece extending in the front-rear direction and a jaw member is arranged at the front end, a slit is formed at a front end of the jaw member, the nail groove is fixedly disposed on a top surface of the jaw pull rod; a drive assembly is coupled to the rear end of the outer tube, and the drive assembly is rearward Engaging and driving the upper pusher and the overhanging pusher assembly.

Preferably, the upper pusher of the present invention and the rear end of the pusher pusher respectively pass backwards out of the rear end of the outer tube, and are respectively worn at the front and rear positions of the rear end portion of the upper pusher a post-pushing rod rear long hole and a top nail push rod hole are arranged, and a position of the long hole of the upper nail push rod is matched, and a push-pull hole is bored at a rear end portion of the covering push rod, a rear end portion of the push rod extends rearwardly, and a hook portion is recessed inwardly at a side of the hook portion, and a rear side of the recess is formed at a rear end of the hook portion. Hook, the height of the barb is narrower than the depth of the notch, and the front and rear positions of the upper pusher hole are located within the range of the notch.

Preferably, the driving assembly of the present invention is coupled to a sliding sleeve at a rear end of the outer tube, the sliding sleeve is a tubular body extending in a front-rear direction, and the front end portion of the sliding sleeve is sleeved and fixed thereto. a rear end portion of the outer tube, a rear hole of the upper push rod and a position of the push rod hole, wherein the sliding sleeve penetrates a long hole of the push rod positioning pin, and the upper nail is matched The push rod hole and the position of the recess are formed in the sliding sleeve through a long hole of the loading rod positioning pin, and a slope is formed at a front end of the long hole of the positioning rod positioning pin; the overlay is provided on the outer tube The position of the long hole of the rod positioning pin is sleeved to cover the push rod sliding sleeve, and the covering push rod sliding sleeve penetrates through the pushing rod positioning pin hole, and the covering push rod positioning pin hole is inserted and fixed to cover a push rod positioning pin, the cover push rod positioning pin passes through the upper nail push rod rear long hole, the cover push rod positioning pin is inserted in the cover push rod hole; the sliding sleeve is provided with the loading The position of the long hole of the rod positioning pin is sleeved with a feeding rod sliding sleeve, and the sliding rod sliding sleeve runs through a loading rod positioning pin hole, and the feeding rod positioning pin hole is cut with the sliding sleeve a long hole oriented in the same direction, a loading rod positioning pin is inserted in the loading rod positioning pin hole, the loading rod positioning pin passes through the notch, and the loading rod positioning pin is inserted in the upper nail pushing rod hole.

Preferably, the present invention penetrates a spring positioning pin hole at the rear end of the sliding sleeve, and a spring positioning pin is inserted and fixed in the spring positioning pin hole, and a spring hook hole is formed in the barb. A hooking spring is arranged between the spring hook hole and the spring positioning pin, so that the cover push rod positioning pin abuts against the rear end of the long hole of the push rod positioning pin.

When the invention is used, the rear end is engaged with an existing or applicable driving component, and the driving component is used to drive the upper pusher to advance, and the leading end of the upper pusher of the pusher pushes the frontmost pin of the track forward Pushing, causing the foremost clip to be disengaged from the elastic snap-in shape and into the front collet, while pushing the remaining staples in a plurality of one-way advancement shapes, so that the second after the second The staple is replenished to the original position of the advanced staple, and then the upper pusher is driven back. When the foremost clip enters the collet, the driving assembly drives the overlying push rod to move forward, and the overlying push rod pushes the jaw clip forward to drive the grip to clamp the clip To achieve the effect of applying nails to human tissues such as blood vessels to stop bleeding.

The effect of the present invention is that, since the compression spring is not provided as the driving force for the advancement of the nail, and the plurality of clips are respectively driven by the plurality of one-way ratchets of the above nail pusher, the plurality of clips are The push does not push to generate additional resistance, and there is no twisted spring that hinders the mechanism action in the track, thus enabling the nailing operation of the present invention to be smoother.

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

Referring to the preferred embodiment of the present invention as shown in FIG. 1 to FIG. 7, the present invention provides a blood vessel applying device comprising an outer tube 10, a jaw rail assembly 20 disposed in the outer tube 10, and a a pusher pusher 30 disposed within the outer tube 10, a push-on pusher assembly 40 disposed within the outer tube 10, and a drive assembly 50 coupled to the rear end of the outer tube 10, wherein:

The outer tube 10 is a circular long tube extending in the front-rear direction, and an outer tube fixing long hole 11 is penetrated in a radial direction of the outer tube 10 at a rear end portion of the outer tube 10, and the outer tube fixing long hole 11 is Long holes extending in the front-rear direction.

Referring to FIGS. 2 to 4, the jaw rail assembly 20 includes a jaw pull rod 21, a jaw member 22, and a staple groove 23. The jaw pull rod 21 is a long piece extending in the front-rear direction and fixed in the outer tube 10, and the rear end of the jaw pull rod 21 is passed backwards out of the rear end of the outer tube 10, behind the jaw pull rod 21 The end of the jaw is provided with a long hole 211, and corresponding to the position of the outer tube fixing the long hole 11, a jaw pull rod fixing hole 212 is bored in the jaw pull rod 21; the jaw member 22 is connected to the jaw pull rod The front end of the jaw member 22 is bifurcated to form a collet 221, the collet 221 is forwardly passed out of the front end of the outer tube 10, and the collet 221 is in a downwardly inclined state on the front side, in the clip A bottom surface of each of the left and right sides of the mouth 221 is formed with a jaw rib 222; the nail groove 23 is fixedly fixed to the top surface of the jaw pull rod 21, and the nail groove 23 is a long groove extending in the front-rear direction, and the nail groove 23 is inside the nail groove 23 A rail 231 extending in the front-rear direction is formed, and the front end of the rail 231 is opposite to the rear end of the collet 221, and an opening 232 is formed at the front end of the rail 231.

In the track 231, a plurality of clips 24 are arranged in the front and rear intervals. A positional elastic piece 233 is formed in the middle of the bottom of the nail groove 23 corresponding to the position of the front end portion of the track 231. The positioning elastic piece 233 is on the front end. The accommodating piece 233 is a resilient snap-shaped shape for passing the respective clips 24 in one direction, and the foremost clip 24 is located between the positioning elastic piece 233 and the inner wall of the track 231; In a position corresponding to the opening 232, a guiding elastic piece 234 is formed in the middle of the bottom of the nail groove 23, and the guiding elastic piece 234 is a front end upturned piece body and is located directly in front of the positioning elastic piece 233; at the bottom of the nail groove 23 The arrangement of the middle and the rear space is provided with a plurality of unidirectional locking shapes 235, and the front unidirectional locking shape 235 is spaced apart from the positioning elastic piece 233, and the plurality of unidirectional clamping shapes 235 are respectively front end upturned. The sheet body is located directly behind the positioning elastic piece 233, and the plurality of staples 24 after the second one are respectively positioned to be positioned in front of the respective one-way clamping shapes 235.

The upper push rod 30 includes a front rod 301 and a rear rod 302 respectively located on the front and rear sides, and the upper push rod 30 is formed by the front rod 301 and the rear rod 302. a strip-shaped piece, the upper push rod 30 is disposed in the outer tube 10 and abuts against the top surface of the nail groove 23, corresponding to the positions of the plurality of staples 24 after the last two The bottom surface of the upper push rod 30 is arranged in a front-rear interval to form a plurality of pairs of one-way ratchet teeth 31. The plurality of pairs of one-way ratchet teeth 31 extend downward into the rail 231 and are respectively located behind the mating clips 24, A plurality of pairs of one-way ratchet teeth 31 are respectively formed on the bottom surface of the front section rod 301 as a one-way advancement shape; a front end of the front section rod 301 of the upper nail push rod 30 is extended forward to form a nail piece 32. The front end of the nail piece 32 forms a dialing end 321 which is an inverted U-shaped body and is located at the rear side of the foremost clip 24; the dialing end 321 is offset from the positioning elastic piece 233 to the left and right, so that the When the dialing end 321 moves forward and backward, it does not interfere with the positioning elastic piece 233 and the guiding elastic piece 234; the plurality of pairs of the one-way ratchet teeth 31 and the respective 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 upper push rod 30 is rearwardly passed out of the rear end of the outer tube 10, and a rear nail pushing rod rear long hole 33 and an upper nail pushing are respectively disposed at the front and rear positions of the rear end portion of the upper nail pushing rod 30. a rod hole 34, the upper nail push rod rear long hole 33 is a long hole extending in the front-rear direction, and the upper nail push rod rear long hole 33 and the jaw pull rod long hole 211 are vertically overlapped, corresponding to the outer tube fixing The position of the long hole 11 is formed in the upper nail push rod 30 with a nail push rod front long hole 35, and the upper nail push rod front long hole 35 is located in front of the upper nail push rod rear long hole 33, the aforementioned clamp The nozzle rod fixing hole 212 is located below the front end portion of the upper nail push rod front long hole 35, and the above-mentioned upper nail push rod rear long hole 33, the upper nail push rod hole 34 and the upper nail push rod front long hole 35 are all pierced. At the rear section rod 302.

The cover pusher assembly 40 includes a cover pusher 41 and a jaw clamp 42. The cover pusher 41 is an elongated piece extending in the front-rear direction and abutting against the bottom surface of the jaw pull rod 21, and the rear end of the push-up push rod 41 is passed backwards out of the rear end of the outer tube 10 to cooperate The position of the rear long hole 33 of the upper push rod is placed at a rear end portion of the cover pusher 41 to pass through the push rod hole 411, and the position of the outer tube is fixed to the long hole 11 at the position of the push rod 41 is inserted into the push rod long hole 412. The above-mentioned jaw pull rod fixing hole 212 is located above the front end portion of the cover push rod long hole 412, and a hook portion is extended rearward at the rear end of the cover push rod 41. 413, a recess 414 is formed inwardly of the side of the hook portion 413, and the front and rear positions of the upper push rod hole 34 are located within the range of the recess 414. The rear portion of the upper push rod 30 The rear end of the rod 302 is bent toward the inner side of the recess 414 such that the upper push rod hole 34 is located inside the recess 414, and a barb 415 is formed at the rear end of the hook portion 413. The hook 415 is adjacent to the rear side of the recess 414. The height of the barb 415 is narrower than the depth of the recess 414. The hook 415 is bored with a spring hook hole 416 at the push-up push rod 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 cover pusher 41. The jaw clamp 42 is an elongated block extending in the front-rear direction, facing the front end of the jaw clamp 42. A recessed groove 421 is formed in the recessed portion, and a neck portion 422 having a width smaller than the remaining portion on the front side is formed at the rear end of the sliding groove 421, and the head portion 417 of the push-up push rod 41 is slidably disposed in the sliding groove 421. The length of the front and rear of the head portion 417 is shorter than the length of the front and rear of the sliding groove 421. The neck portion 418 passes through the neck portion 422, and the length of the front and rear extension of the neck portion 418 is greater than the length of the front and rear of the neck portion 422. A clamping groove 423 is formed on the top of the jaw clip 42 at the front, and the clamping groove 423 is a groove which is gradually widened from the back to the front. The front end of the clamping groove 423 is fitted to the two. The rear end of the jaw rib 222.

Referring to FIG. 2 and FIG. 5 to FIG. 7 , the driving assembly 50 is provided with a sliding sleeve 51 which is a circular tube body extending in the front-rear direction and includes two half-shells A that are fastened together. The shape of the outer tube fixing the long hole 11 is formed on the opposite sides of the inner circumferential surface of the front end portion of the sliding sleeve 51 to form a block 511, and the insert block 511 is inserted into the outer tube fixing long hole 11 so that the sliding sleeve is positioned. The front end of the tube 51 is sleeved and fixed to the rear end of the outer tube 10. The sliding sleeve 51 is provided with a fixing bolt hole 512, and a fixing bolt 52 is inserted through the fixing bolt hole 512. The fixing pin 72 passes through the front end portion of the upper nail pusher front long hole 55 and the front end portion of the pushing push rod long hole 612. The fixing plug 72 is interposed in the middle of the jaw pull rod 21 to be fixed by the jaw pull rod. The hole 212 fixes the jaw pull rod 21 in the outer tube 10.

Cooperating with the upper nail pushing rod rear long hole 33, the jaw connecting rod long hole 211 and the position of the pushing rod hole 411, the sliding sleeve 51 penetrates into the push rod positioning pin long hole 513 in the radial direction, The cover push rod positioning pin long hole 513 is a long hole extending in the front-rear direction, and the position of the upper push rod hole 34 and the notch 414 is matched, and the slide sleeve 51 is radially penetrated through a loading rod. The pin long hole 514 is a long hole extending in the front-rear direction, and a slope 515 is formed at the front end of the upper rod positioning pin long hole 514.

A sliding sleeve sliding sleeve 53 is sleeved at a position where the sliding sleeve 51 is provided with the long hole 513 of the pushing rod positioning pin, and the pushing rod sliding sleeve 53 radially penetrates a pushing rod positioning pin. a hole 531, in which the push-pull positioning pin hole 531 is inserted and fixed to the push rod positioning pin 54, the cover push rod positioning pin 54 passes through the upper nail push rod rear long hole 33 and the jaw pull rod length The hole 211, the cover push rod positioning pin 54 is inserted into the cover push rod hole 411 of the cover push rod 41, and the push rod positioning pin 54 can pass through when the push rod slide sleeve 53 advances. The cover pusher 41 is driven to advance.

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

Referring to FIG. 8, since the loading rod positioning pin 56 abuts against the inner side of the recess 414, when the feeding push rod 41 is driven forward by the falling push rod sliding sleeve 53, the pushing push rod 41 is advanced. The back hook 415 can hook the loading rod positioning pin 56 to advance the upper pushing rod 30 together with the feeding push rod 41. When the loading rod positioning pin 56 advances to the inclined surface 515, Moving along the inclined surface 515 and disengaging the reverse hook 415, the loading rod sliding sleeve 55 and the loading rod positioning pin 56 can be driven to move backward to drive the upper nail pushing rod 30 to move backward, so that the upper nail pushing The rod 30 moves back and forth once in the aforementioned process. When the upper push rod 30 returns to the original position and the cover push rod 61 also returns to the original position, the reverse hook 415 passes backward through the loading rod positioning pin 56, causing the loading rod positioning pin 56 to fall back into the Within the recess 414, the barb 415 is now returned to a position where the upper bar positioning pin 56 can be hooked forward.

Referring to FIG. 5, a rear end of the sliding sleeve 51 is inserted through a spring positioning pin hole 516. The spring positioning pin hole 516 is disposed at the rear end of the two halves of the casing A. A fixing sleeve 57 is disposed on the rear end of the fixing sleeve 57. A locking hole 571 is inserted through the fixing sleeve 57. A spring positioning pin 58 is inserted through the bolt hole 571. The spring positioning pin 58 is inserted into 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 push rod 41, so that the cover push rod positioning pin 54 abuts against the cover The push rod is positioned at the rear end of the pin long hole 513.

When the foregoing preferred embodiment of the present invention is used, for example, the cover rod sliding sleeve 53 and the loading rod sliding sleeve 55 are driven by the holding unit of the existing automatic clip applier, but the preferred embodiment is driven. The driving mechanism of the action is not limited to the existing holding unit, and any mechanism capable of driving the cover pusher 41 and the upper pusher 30 in accordance with the operation of the preferred embodiment can drive the preferred embodiment. Drive mechanism.

Referring to FIG. 8, when the preferred embodiment of the present invention is used, the push-up push rod sleeve 53 is driven forward, and the cover push rod sleeve 53 is driven by the cover push rod positioning pin 54 to push the push-in push. The rod 41 moves forward. During the forward movement of the pushing rod 41, the barb 415 covering the rear end of the pushing rod 41 hooks the loading rod positioning pin 56, so that the upper nail pushing rod 30 and The cover 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 disengages from the reverse hook 415. At this time, the cover pusher 41 continues to move forward. The loading pusher 41 continues forward, and the driving mechanism drives the loading rod sliding sleeve 55 to move backwards, so that the loading rod sliding sleeve 55 drives the upper pushing rod 30 backward with the loading rod positioning pin 56. The movement, that is, during the entire stroke of the advancement of the pusher 41, the pusher pusher 30 performs a stroke motion that moves back and forth once.

When the upper pusher 30 is moved forward and backward for one stroke, referring to FIG. 9 and FIG. 10, the dial end 321 of the front end of the upper pusher 30 pushes the foremost clip 24 forward. Pushing the foremost one of the staples 24 from the rear to the inside of the jaws 221 of the jaws 22, and then the upper pusher 30 is retracted, so that the staples 24 retained in the jaws 221 are subjected to the clips. The clamping of the mouth 221 achieves the effect of clamping the blood vessel. When the foremost clip 24 is pushed forward by the dial end 321 of the upper push rod 30, the plurality of pairs of one-way ratchets 31 of the upper push rod 30 also move forward, the foremost pair The one-way ratchet 31 pushes the cooperating pin 24, that is, the second pin 24 originally from the front to the positioning spring 233; the remaining pairs of the one-way ratchet 31 are also pushed forward. Each of the mating staples 24 is advanced such that each of the staples 24 advances past the next one-way nip shape 235 and is retained therein for positioning; then the upper pusher 30 is retracted, the dialed end 321 and each pair The one-way ratchets 31 respectively return to the original position beyond the respective staples 24 that have been positioned after the respective rearward rearward, and wait for the next advancement of the respective staples 24 to advance.

The present invention further provides the guiding elastic piece 234 at the opening 232 at the front end of the rail 231. Referring to FIG. 10, when the foremost pin 24 advances into the clamping mouth 221, the clamping pin The rear end of the 24 is pushed up by the guiding elastic piece 234, so that the clamping pin 24 can be tilted to adapt to the inclined angle of the clamping mouth 221, so that the clamping nail 24 can move more smoothly into the clamping mouth 221, The pin 24 is prevented from being jammed at the opening 232 to a greater extent.

In the process of advancing the pusher 41, referring to FIG. 11, when the cover pusher 41 starts to advance, the head 417 of the front end of the pusher 41 is at the jaw clamp 42. The sliding groove 421 slides forward, and the overlying pusher 41 does not drive the jaw clamp 42 to move forward. After the foremost one of the staples 24 is fed into the gripper 221, the head 417 of the push-up pusher 41 is brought up to the front end face of the sliding groove 421, and the overlying pusher 41 drives the jaws. The clamp 42 is advanced, and the clamping groove 423 of the jaw clamp 42 presses the two jaw ribs 222 against each other, so that the jaws 221 sandwich the internal staples 24. When the cover pusher 41 is retracted, the head 417 slides backward in the sliding groove 421 of the jaw clamp 42 when the cover pusher 41 does not drive the jaw clamp 42 backward. Retreating, the clamping mouth 221 can be kept in the clamping state for a period of time. When the pushing rod 41 is pushed back and then retracted, the head portion 417 pulls back the necking portion 422 of the jaw clip 42 to drive the jaw mouth. The clamper 42 is moved rearward, at which time the jaw rib 222 is released such that the jaw 221 is in an open state.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the claims of the present invention, and other equivalent changes or modifications which are not departing from the spirit of the present invention should be included in the present invention. Within the scope of the patent application.

10‧‧‧External management

11‧‧‧The outer tube is fixed with a long hole

20‧‧ ‧ jaw rail assembly

21‧‧‧ jaw lever

211‧‧ ‧ jaw pull rod long hole

212‧‧‧ jaw lever fixing hole

22‧‧‧ jaw parts

221‧‧‧ pinch

222‧‧‧Folding ribs

23‧‧‧nail slot

231‧‧‧ Track

232‧‧‧ openings

233‧‧‧ Positioning shrapnel

234‧‧‧Guided shrapnel

235‧‧ unidirectional card shape

24‧‧‧ pin

30‧‧‧Upper push rod

301‧‧‧ front pole

302‧‧‧ Rear rod

31‧‧‧ one-way ratchet

32‧‧‧dred nails

321‧‧‧ dialing end

33‧‧‧After the putter, the long hole

34‧‧‧Upper push rod hole

35‧‧‧Upper pin front hole

40‧‧‧Into the putter assembly

41‧‧‧Into the putter

411‧‧‧Into the push rod hole

412‧‧‧Into the long hole of the putter

413‧‧‧Decoction Department

414‧‧‧ notch

415‧‧‧

416‧‧‧Spring hook hole

417‧‧‧ head

418‧‧‧ neck

42‧‧‧ jaw clamp

421‧‧‧ sliding slot

422‧‧‧neck

423‧‧‧Clamping slot

50‧‧‧Drive components

51‧‧‧Sleeve

511‧‧‧Block

512‧‧‧Fixed pin hole

513‧‧‧Into the push rod positioning pin long hole

514‧‧‧Upper rod positioning pin long hole

515‧‧‧Slope

516‧‧‧Spring locating pin hole

52‧‧‧dred nails

53‧‧‧Into the putter sleeve

531‧‧‧Into the push rod positioning pin hole

54‧‧‧Into the push rod positioning pin

55‧‧‧Loading rod sliding sleeve

551‧‧‧Loading rod positioning pin hole

56‧‧‧Feed rod positioning pin

57‧‧‧Fixed sets

571‧‧‧Latch hole pin hole

58‧‧‧Spring locating pin

59‧‧‧Into the spring

A‧‧‧ half shell

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a preferred embodiment of the present invention. Figure 2 is an exploded view of a preferred embodiment of the present invention. Figure 3 is an exploded view of a portion of the preferred embodiment of the present invention. Figure 4 is a cross-sectional view of the front end portion of the preferred embodiment of the present invention. Figure 5 is an exploded view of the drive assembly of the preferred embodiment of the present invention. Figure 6 is a plan view of a preferred embodiment of the present invention. Figure 7 is a bottom plan view of a preferred embodiment of the present invention. Figure 8 is a schematic view showing the operation of the rear stage of the preferred embodiment of the present invention. Figure 9 is a schematic view of the action of the above-mentioned pusher pusher of the preferred embodiment of the present invention. Figure 10 is a schematic cross-sectional view of the pusher pusher of the above preferred embodiment of the present invention. Figure 11 is a schematic view showing the action of driving the jaws of the preferred embodiment of the present invention.

Claims (9)

A blood vessel applying device comprises: an outer tube; a jaw rail assembly, a nail groove is arranged in the outer tube, a track is formed in the nail groove, and an elastic snap-fit shape is arranged at a front end portion of the track, In the rear of the shape of the elastic snap-on, a plurality of one-way snap shapes are arranged in the front and rear intervals of the track, and a clip mouth is arranged in front of the nail slot, and the clip mouth passes out the front end of the outer tube. The front end of the track is opposite to the rear end of the collet, and a plurality of clips are arranged in the track in the front and rear intervals. The foremost clip is stuck in the elastic snap-in shape, and the remaining plurality of clips are The card is respectively positioned in each of the one-way card shapes; a pin pushing rod is disposed in the outer tube and abuts against the top side of the nail groove, and a nail piece is formed on the front end of the nail pushing rod. Correspondingly, the foremost clip forms a dial end at the front end of the nail piece, corresponding to the position of the plurality of clips after the two from the front, and the arrangement of the upper and lower push rods is arranged in the front and rear intervals. a plurality of one-way propulsion shapes, a plurality of one-way propulsion shapes extending into the orbit and respectively a rear of each of the mating clips; and a push-on pusher assembly, a push-in push rod is disposed in the outer tube, and a jaw clamp is coupled to the front end of the push-up push rod to the jaw clamp Drive the jaws to clamp. The blood vessel clipping device of claim 1, wherein the elastic snap-in shape forms a positioning elastic piece in the middle of the bottom of the nail groove, the positioning elastic piece is a front end upturned piece body, and the dialing end is The U-shaped sheet is inverted and staggered to the left and right of the positioning elastic piece. The blood vessel applying device according to claim 2, wherein the plurality of unidirectionally-shaped card-shaped shapes are respectively a front-up and up-warped sheet body, and the plurality of unidirectionally-cut shapes are arranged in a front-rear arrangement at the bottom of the nail groove. In the middle, the clips are in front of each one-way card shape; the plurality of one-way propulsion shapes are respectively a pair of one-way ratchets, each pair of one-way ratchets and each one-way card shape shape Staggered. The blood vessel applying device according to any one of claims 1 to 3, wherein the collet is a downwardly inclined state of the front side, an opening is formed at a front end of the rail, and a position corresponding to the opening is in the nail groove A guiding elastic piece is formed in the middle of the bottom portion, and the guiding elastic piece is a front end upturned piece body. The blood vessel applying device of claim 4, wherein a jaw rib is formed on each of the left and right bottom surfaces of the jaw, and a head portion and a neck portion are respectively formed at the front and rear positions of the front end portion of the pushing rod. a sliding groove is formed in the front end of the jaw clip, and a neck portion is formed at a rear end of the sliding groove. The length of the front and rear of the head is shorter than the length of the front and rear of the sliding groove. The head is slidably disposed on the sliding groove, the neck portion passes through the neck portion, and the length of the neck portion extends forward and backward is greater than the length of the front and rear of the neck portion, and a front portion is formed at the top of the jaw clamp An opening groove of the opening, the clamping groove is a front wide and a narrow groove, and a front end of the clamping groove is sleeved at a rear end of the two jaw ribs. The blood vessel applying device of claim 5, wherein the jaw rail assembly is fixedly disposed in the outer tube with a jaw pull rod, the jaw rod is a long piece extending in the front-rear direction and is provided at the front end. a jaw member, wherein the jaw is formed at a front end of the jaw member, the nail groove is fixedly disposed on a top surface of the jaw lever; and a driving assembly is coupled to the rear end of the outer tube The drive assembly is coupled by the rear and drives the upper pusher and the overhanging pusher assembly. The blood vessel applying device of claim 6, wherein the upper nail push rod and the rear end of the overlying push rod respectively pass back out of the rear end of the outer tube at a rear end portion of the upper push rod The front and rear positions respectively are provided with a nail push rod rear long hole and a top nail push rod hole, and the position of the long hole after the upper nail push rod is matched, and a cover push is inserted at the rear end portion of the cover push rod a rod hole extending rearwardly at a rear end of the pushing rod, a recessed portion recessed inwardly of the side of the hook portion, and a recess formed adjacent to the rear side of the recess at the hook portion The rear end forms a barb, the height of the barb is narrower than the depth of the notch, and the front and rear positions of the upper pusher hole are located within the range of the notch. The blood vessel applying device according to claim 7, wherein the driving assembly is coupled to a sliding sleeve at a rear end of the outer tube, the sliding sleeve being a tubular body extending in a front-rear direction, and a front end portion of the sliding sleeve The sleeve is fixed to the rear end portion of the outer tube, and the rear hole of the upper push rod and the position of the push rod hole are matched, and the sliding sleeve penetrates into the long hole of the push rod positioning pin, and cooperates The upper nail push rod hole and the position of the recess are formed in the sliding sleeve through a long hole of the loading rod positioning pin, and a slope is formed at the front end of the long hole of the loading rod positioning pin; The position of the long hole of the push rod positioning pin is sleeved to cover the push rod sliding sleeve, and the covering push rod sliding sleeve penetrates through the pushing rod positioning pin hole, and the covering push rod positioning pin hole is inserted Fixing a cover into the push rod positioning pin, the cover push rod positioning pin passes through the upper nail push rod rear long hole, and the cover push rod positioning pin is inserted in the cover push rod hole; in the sliding sleeve a feeding rod sliding sleeve is disposed at a position of the long hole of the loading rod positioning pin, and the feeding rod sliding sleeve penetrates a loading rod positioning pin hole, and the loading rod positioning pin hole Is a long hole in the same direction as the tangential direction of the sliding sleeve, and a loading rod positioning pin is inserted into the positioning rod pin hole of the loading rod, the loading rod positioning pin passes through the notch, and the loading rod positioning pin is inserted It is set on the upper push rod hole. The blood vessel applying device of claim 8, wherein a rear end of the sliding sleeve penetrates a spring positioning pin hole, and a spring positioning pin is inserted and fixed in the spring positioning pin hole, and a bar is disposed in the barb. The spring hook hole is provided with a cover spring between the spring hook hole and the spring positioning pin, so that the cover push rod positioning pin abuts against the rear end of the long hole of the push rod positioning pin.