TW201932075A - Surgical clip applier - Google Patents

Abstract

A surgical clip applier has an outer tube and a rail in the outer tube. The rail has a stopper formed on a distal end. The rail has multiple clips placed therein. A distal end of the rail has a jaw structure. The rail has a spring bracket and a guiding rod. The rail has a pusher being pushed by the guiding rod. A spring is mounted outside the rod to push the pusher and clips. A reciprocating pushing assembly is placed inside the tube. When the pusher is moved back and forth, a first clip is moved into the jaw structure and other clips are moved toward for one step. In this present invention, the spring is guided by the rod to prevent deformation.

Description

Vascular application device

The present invention relates to a construction of a surgical instrument, and more particularly to a blood vessel applying device in which a push nail is stable and can be smoothly operated.

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 clamping unit is easy to be twisted when the degree of compression is large, which causes the force of pushing the clamping unit to be uneven, and the movement of the blood vessel clamp is not smooth when the blood vessel clipper is operated. Disadvantages, the blood vessel clip applier cannot be operated smoothly.

Due to the lack of guidance of the spring of the existing clip device, the action of the spring pushing the clip unit to advance the blood vessel clip is not smooth. To this end, the present invention is provided with a guide spring structure in the blood vessel applying device to achieve a smoother operation of the blood vessel applying device.

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 formed 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, and a clip mouth is arranged in front of the nail groove, The front end of the outer tube is inserted through the front end of the outer tube, and the front end of the rail is provided with a plurality of clips in the form of continuous rearrangement of the nozzle in the track, and the foremost clip is stuck in the front Elastic snap-in shape;

a propulsion assembly is a spring seat fixed at a position behind the plurality of clips, the spring seat is coupled with a guide rod, the guide rod is parallel to the rail, and a pusher is slidably disposed on the rail. The nail pushing device forms a sleeve protruding from the rail, the sleeve is slidingly sleeved on the guiding rod, the front end of the nail pushing device pushes the last nail, and the guiding rod is sleeved with a compression spring, The two ends of the spring respectively abut the spring seat and the nail pusher;

a top push rod is disposed in the outer tube and located on a top side of the nail groove, and a nail piece is formed on a front end of the upper nail push rod, and a frontmost pin is formed at a front end of the nail piece a dial; and

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 that two positioning elastic pieces are formed on the front and rear sides of the bottom of the bottom of the nail groove, and the two positioning elastic pieces are respectively the front end upturned piece body, and the dialing end is The U-shaped sheet is inverted and staggered to the left and right with the two positioning elastic pieces.

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 The shrapnel is a sheet whose front end 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 collet is formed at a front end of the jaw member, and the nail groove is fixedly disposed on a top surface of the jaw lever; corresponding to the position of the rail, before and after the middle edge of the upper push rod Opening a sleeve opening to receive the guide rod and the sleeve of the nail pusher; at the rear end of the outer tube, a driving assembly is coupled, the driving assembly is engaged and driven by the rear The upper pusher and the overlying 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 the pin out of the elastic snap-in shape and into the front collet, and then driving the upper pusher to retreat, at which time the spring of the pusher assembly pushes the pusher forward and drives the plurality of clips Advance until the foremost staple is positioned in the elastic snap-in shape. 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 the driving force of the propulsion assembly for driving the plurality of staples along the track is from the spring, and since the spring is sleeved around the guide rod, the degree of compression of the spring is large or Small, the spring can maintain the linear shape to apply force to the nail pushing device, no distortion is hindered, and the nail pushing device can also be linearly advanced by the guiding of the guiding rod, so that the nail pushing device of the present invention can In order to smoothly and stably push the plurality of staples, the plurality of staples can be smoothly pushed forward, so that the mechanism of the present invention can be operated more smoothly, and the nail feeding operation when the blood vessel is clamped is 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. 6, 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 more. a clip 30 disposed on the jaw rail assembly 20, a pusher assembly 40 disposed on the jaw rail assembly 20, and a push pin 50 disposed in the outer tube 10, one disposed outside the clip The push rod assembly 60 in the tube 10, and a drive assembly 70 connected 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 and 3, 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 an opening 232 is formed at the front end of the rail 231.

The plurality of clips 30 are arranged on the rail 231 in a continuous manner in front and rear. The front end of the rail 231 is opposite to the rear end of the collet 221, and the position of the front end of the rail 231 is at the bottom of the nail slot 23. Two positioning elastic pieces 233 are formed on the front and rear sides of the middle, and each positioning elastic piece 233 is a front end upturned piece body, and the two positioning elastic pieces 233 form an elastic snap-shaped shape for each of the nails 30 to pass forward in one direction, and are located at the forefront. The clip 30 is positioned between the two positioning elastic pieces 233, and corresponding to the position of 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 and is located The front of the two positioning elastic pieces 233.

The propulsion assembly 40 includes a spring seat 41, a guide rod 42, a nail pusher 43, and a spring 44. The spring seat 41 is fixedly coupled to the rear end of the rail 231. The spring seat 41 is located behind the plurality of clips 30. The guide rod 42 is a long rod body extending in the front-rear direction and the rear end thereof is coupled to the spring seat 41. The guide rod 42 is disposed in parallel on the top side of the rail 231. The nail pusher 43 is slidably disposed on the rail 231. The nail pusher 43 forms a sleeve 431 protruding from the rail 231. The sleeve 431 is slidably sleeved on the guide rod 42. The front end of the nail pusher 43 is used to push the last nail 30; the spring 44 is in a compressed form and is sleeved on the guide rod 42, the spring 44 The two ends abut against the spring seat 41 and the nail pusher 43, respectively, thereby driving the nail pusher 43 to push the plurality of clips 30 toward the pusher.

The upper pusher 50 is an elongated piece extending in the front-rear direction, and the upper pusher 50 is placed in the outer tube 10 and abuts against the top surface of the nail groove 23, corresponding to the position of the track 231 A sleeve opening 51 is defined in the middle of the upper push rod 50. The sleeve opening 51 is an elongated hole extending in the front-rear direction, and the guide rod 42 and the sleeve 431 of the nail pusher 43 are accommodated. A nail piece 52 is formed at the front end of the nail pusher 50, and a dial end 521 is formed at the front end of the nail piece 52. The dial end 521 is an inverted U-shaped body and is located at the front end of the track 231. The rear side of the clip 30 is offset from the two positioning elastic pieces 233 by the left and right sides, so that the sliding end 521 does not interfere with the two positioning elastic pieces 233 and the guiding elastic piece 234 when the pushing end 521 moves forward and backward.

The rear end of the upper push rod 50 is rearwardly passed out of the rear end of the outer tube 10, and a rear nail push rod rear long hole 53 and an upper nail push are respectively disposed at the front and rear positions of the rear end portion of the upper nail push rod 50. a rod hole 54. The upper nail push rod rear long hole 53 is a long hole extending in the front-rear direction, and the upper nail push rod rear long hole 53 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 50 with a nail push rod front long hole 55, and the upper nail push rod front long hole 55 is located in front of the upper nail push rod rear long hole 53, the aforementioned pliers The nozzle lever fixing hole 212 is located below the front end portion of the upper nail pusher front long hole 55.

The cover pusher assembly 60 includes a cover pusher 61 and a jaw clamp 62. The cover pusher 61 is an elongated piece extending in the front-rear direction and abuts against the bottom surface of the jaw pull rod 21, and the rear end of the push-up push rod 61 passes backwards out of the rear end of the outer tube 10 to cooperate The position of the rear long hole 53 of the upper push rod is inserted into the rear end portion of the cover push rod 61 to cover the push rod hole 611, and the position of the outer tube fixed to the long hole 11 is used in the push rod. 61 is inserted into the push rod long hole 612. The above-mentioned jaw pull rod fixing hole 212 is located above the front end portion of the cover push rod long hole 612, and a hook portion is extended rearward at the rear end of the cover push rod 61. 613, a recess 614 is formed inwardly of the side of the hook portion 613, and the front and rear positions of the upper nail push rod hole 54 are located within the range of the recess 614, and the rear end of the upper push rod 50 The inward direction of the notch 614 is curved such that the upper push rod hole 54 is located inside the notch 614, and a barb 615 is formed at the rear end of the hook portion 613, and the barb 615 is adjacent On the rear side of the recess 614, the height of the barb 615 is narrower than the depth of the recess 614, and a spring hook hole 616 is bored in the barb 615 before and after the front end of the push rod 61 Respectively opposing left and right width of the wider head 617 and a left-right width narrower neck portion 618 is formed.

A jaw clamp 62 is coupled to the front end of the cover pusher 61. The jaw clamp 62 is an elongated block extending in the front-rear direction, and the front end of the jaw clamp 62 faces forward. A sliding groove 621 is defined in the rear end of the sliding groove 621, and a neck portion 622 having a width smaller than the remaining portion on the front side is formed. The head portion 617 of the pushing rod 61 is slidably disposed in the sliding groove 621. The length of the front and rear of the head 617 is shorter than the length of the front and rear of the sliding groove 621. The neck portion 618 passes through the neck portion 622, and the length of the front and rear extension of the neck portion 618 is greater than the length of the front and rear of the neck portion 622. The top of the jaw clamp 62 forms a clamping groove 623 which is open at the front, and the clamping groove 623 is a groove which is gradually widened from the back to the front. The front end of the clamping groove 623 is fitted to the two clamps. The rear end of the mouth rib 222.

Referring to FIG. 2 and FIG. 4 to FIG. 6 , the driving assembly 70 is provided with a sliding sleeve 71 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 71 to form a block 711, and the insert block 711 is embedded in the outer tube fixing long hole 11 so that the sliding sleeve is positioned. The front end of the tube 71 is sleeved and fixed to the rear end of the outer tube 10. The sliding sleeve 71 is provided with a fixing bolt hole 712, and a fixing bolt 72 is inserted through the fixing bolt hole 712. 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 pusher rear long hole 53, the jaw pull rod long hole 211 and the position of the pusher push rod hole 611, the sliding sleeve 71 penetrates the push rod positioning pin long hole 713 in the radial direction, The cover push rod positioning pin long hole 713 is a long hole extending in the front-rear direction, and the position of the upper push rod hole 54 and the notch 614 is matched, and the slide sleeve 71 is radially penetrated through a loading rod. The pin long hole 714 is a long hole extending in the front-rear direction, and a slope 715 is formed at the front end of the upper rod positioning pin long hole 714.

The sliding sleeve 71 is disposed at a position of the protruding rod positioning pin long hole 713, and is sleeved into the push rod sliding sleeve 73. The covering push rod sliding sleeve 73 radially penetrates the pushing rod positioning pin. The hole 731 is inserted into the push rod positioning pin hole 731 to fix a cover push rod positioning pin 74, and the cover push rod positioning pin 74 passes through the upper nail push rod rear long hole 53 and the jaw pull rod length The hole 211, the cover push rod positioning pin 74 is inserted into the cover push rod hole 611 of the cover push rod 61, and can pass through the cover push rod positioning pin 74 when the cover push rod sleeve 73 advances. The cover pusher 61 is driven to advance.

A loading rod sliding sleeve 75 is disposed at a position where the sliding sleeve 71 is provided with the upper rod positioning pin long hole 714, and the loading rod sliding sleeve 75 radially penetrates a loading rod positioning pin hole 751. The loading rod positioning pin hole 751 is a long hole in the same direction as the tangential direction of the sliding sleeve 71. The loading rod positioning pin hole 751 is inserted and fixed with a loading rod positioning pin 76, and the loading rod positioning pin 76 is worn. Through the notch 614, the loading rod positioning pin 76 is inserted into the upper nail pushing rod hole 54 at the rear end of the upper nail pushing rod 50.

Referring to FIG. 7, since the loading rod positioning pin 76 abuts against the inner side of the recess 614, when the feeding push rod 61 is driven forward by the falling push rod sliding sleeve 73, the pushing push rod 61 is advanced. The back hook 615 can hook the loading rod positioning pin 76 to advance the upper pushing rod 50 together with the feeding push rod 61. When the loading rod positioning pin 76 advances to the inclined surface 715, Moving along the inclined surface 715 and disengaging the barb 615, the loading rod sliding sleeve 75 and the loading rod positioning pin 76 can be driven to move backward to drive the upper nail pushing rod 50 to move backward, so that the upper nail pushing The rod 50 moves back and forth once in the aforementioned process. When the upper push rod 50 returns to the original position and the cover push rod 61 also returns to the original position, the reverse hook 615 passes backward through the loading rod positioning pin 76, so that the loading rod positioning pin 76 falls back into the Within the recess 614, the barb 615 is now returned to a position where the upper bar positioning pin 76 can be hooked forward.

Referring to FIG. 4, a rear end of the sliding sleeve 71 extends through a spring positioning pin hole 716. The spring positioning pin hole 716 is disposed at a rear end of the two halves of the casing A. A fixing sleeve 77 is disposed on the rear end of the fixing sleeve 77. A locking hole 771 extends through the fixing sleeve 77. A spring positioning pin 78 is inserted through the locking hole 771. The spring positioning pin 78 is inserted into the spring positioning pin hole 716. a cover spring 79 is hooked between the spring hook hole 616 and the spring positioning pin hole 716 of the rear end of the push rod 61 so that the cover push rod positioning pin 74 abuts against the cover The push rod is positioned at the rear end of the pin long hole 713.

When the foregoing preferred embodiment of the present invention is used, for example, the cover rod sliding sleeve 73 and the loading rod sliding sleeve 75 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 61 and the upper pusher 50 in accordance with the operation of the preferred embodiment can drive the preferred embodiment. Drive mechanism.

Referring to FIG. 7, when the preferred embodiment of the present invention is used, the overlying push rod sliding sleeve 73 is driven to advance, and the overlying push rod sliding sleeve 73 drives the overlying pushing with the pushing push rod positioning pin 74. The rod 61 moves forward. During the forward movement of the pushing rod 61, the barb 615 covering the rear end of the pushing rod 61 hooks the loading rod positioning pin 76, so that the upper nail pushing rod 50 and The cover pusher 61 advances together. When the load bar positioning pin 76 advances to the slope 715, it moves along the slope 715 and disengages from the barb 615, and the cover pusher 61 continues to move forward. While the pushing pusher 61 continues to move forward, the driving mechanism drives the loading rod sliding sleeve 75 to move backwards, so that the loading rod sliding sleeve 75 drives the upper pushing rod 50 backward with the loading rod positioning pin 76. The movement, that is, during the entire stroke in which the pusher 61 is advanced, the pusher pusher 50 performs a stroke motion that moves back and forth once.

When the upper pusher 50 is moved forward and backward for one stroke, referring to FIG. 8 and FIG. 9, the dial end 521 at the front end of the pusher pusher 50 will be located at the foremost end of the rail 231. Pushing forward, pushing one of the foremost staples 30 from the rear to the inside of the jaw 221 of the jaw member 22, and then the upper pusher 50 is retracted to allow the staples retained in the jaw 221 30 is sandwiched by the jaw 221 to achieve the effect of clamping the blood vessel. When the foremost clip 30 is pushed forward by the dial end 521 of the upper push rod 50, as shown in FIG. 3, the pusher assembly 40 continues to urge the pusher 43 with the spring 44. Along the track 231, so when the foremost clip 30 is disengaged between the two positioning tabs 233, the second clip 30 and the plurality of clips 30 behind it are pushed by the pusher 43 The advancement is continued until the second staple 30 is moved to a temporarily fixed position between the two positioning elastic pieces 233 to become the nail 30 at the foremost end in the rail 231.

The pusher assembly 40 is pushed forward by the spring 44 by the spring 44. Since the spring 44 is guided by the guide rod 42 only forward, and because the spring 44 is sleeved on the guide Around the rod 42, so that the spring 44 is not deformed into an S-shaped obstruction action, regardless of the degree of compression, so that the spring 44 can push the nail pusher 43 forward in a relatively smooth manner, so that The clips 30 can be pushed forward smoothly, allowing the mechanism of the present invention to operate more smoothly. 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. 9, when the foremost end pin 30 enters the inside of the clamping mouth 221, the clamping pin The rear end of the 30 is pushed up by the guiding elastic piece 234, so that the clamping nail 30 can be tilted to adapt to the inclined angle of the clamping mouth 221, so that the clamping nail 30 can move more smoothly into the clamping mouth 221, The pin 30 is prevented from being jammed at the opening 232 to a greater extent.

During the advancement of the advancement pusher 61, as shown in FIG. 10, when the cover pusher 61 starts to advance, the head 617 of the front end of the pusher 61 is at the jaw clamp 62. The sliding groove 621 slides forwardly, and the overlying pusher 61 does not drive the jaw clamp 62 to move forward. After the foremost one of the clips 30 is fed into the gripper portion 221, the head portion 617 of the push-up pusher 61 is brought up to the front end surface of the sliding groove 621, and the overlying pusher 61 drives the pliers. The mouth clamp 62 is advanced with the clamping groove 623 of the jaw clamp 62 pressing the two jaw ribs 222 against each other such that the jaws 221 sandwich the internal staples 30. When the cover pusher 61 is retracted, the head 617 slides backward in the sliding groove 621 of the jaw clamp 62, and the cover pusher 61 does not drive the jaw clamp 62 backward. Retreating, the clamping mouth 221 can be kept in the clamping state for a period of time. When the pushing rod 61 is pushed back and then retracted, the head portion 617 pulls back the necking portion 622 of the jaw clip 62 to drive the jaw mouth. The clip 62 is moved rearward, at which time the grip rib 222 is released such that the grip 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

30‧‧‧ pinning

40‧‧‧Promoting components

41‧‧‧Spring seat

42‧‧‧guides

43‧‧‧nail pusher

431‧‧‧ casing

44‧‧‧ Spring

50‧‧‧Upper push rod

51‧‧‧ casing opening

52‧‧‧dred nails

521‧‧‧ dialing end

53‧‧‧After the putter

54‧‧‧Upper push rod hole

55‧‧‧Upper nail pusher front hole

60‧‧‧Into the putter assembly

61‧‧‧Into the putter

611‧‧‧Into the push rod hole

612‧‧‧Into the long hole of the putter

613‧‧‧Decoction Department

614‧‧‧ notch

615‧‧‧

616‧‧‧Spring hook hole

617‧‧‧ head

618‧‧‧ neck

62‧‧‧ jaw clamp

621‧‧‧Sliding trough

622‧‧‧neck

623‧‧‧Clamping slot

70‧‧‧Drive components

71‧‧‧Sleeve

711‧‧‧Block

712‧‧‧Fixed pin hole

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

714‧‧‧Upper rod positioning pin long hole

715‧‧‧Bevel

716‧‧‧Spring locating pin hole

72‧‧‧ fixed latch

73‧‧‧Into the putter sleeve

731‧‧‧Into the push rod positioning pin hole

74‧‧‧Into the push rod positioning pin

75‧‧‧Loading rod sliding sleeve

751‧‧‧Loading rod positioning pin hole

76‧‧‧Loading rod positioning pin

77‧‧‧fixed sleeve

771‧‧‧ pin hole

78‧‧‧Spring locating pin

79‧‧‧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. 4 is an exploded view of the drive assembly of the preferred embodiment of the present invention. Figure 5 is a top plan view of a preferred embodiment of the present invention. Figure 6 is a bottom plan view of a preferred embodiment of the present invention. Figure 7 is a schematic view showing the operation of the rear stage of the preferred embodiment of the present invention. Figure 8 is a schematic view showing the action of the above-mentioned pusher pusher of the preferred embodiment of the present invention. Figure 9 is a schematic cross-sectional view of the pusher pusher of the above preferred embodiment of the present invention. Figure 10 is a schematic view showing the action of driving the jaws of the preferred embodiment of the present invention.

Claims (8)

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, A collet is disposed in front of the nail groove, and the collet passes through the front end of the outer tube, and the front end of the rail is opposite to the rear end of the collet, and a plurality of clips are arranged in the track in a continuous manner a pin, the foremost clip card is positioned in the elastic snap-fit shape; a pusher assembly is a spring seat fixed at a position behind the plurality of clips, the spring seat is coupled with a guide rod, the guide rod Parallel to the track, a pusher is slidably disposed on the track, and a sleeve protruding from the track is formed on the pusher, the sleeve is slidingly sleeved on the guide rod, and the front end of the pusher pushes the last a clamping pin, a compression spring is disposed on the guiding rod, the two ends of the spring respectively abut the spring seat and the nail pushing device; a nail pushing rod is disposed in the outer tube and located in the nail a top side of the groove, forming a nail piece at the front end of the upper nail push rod, corresponding to the forefront The clip forms a dial end at the front end of the nail piece; and a push-on push rod assembly, wherein the outer tube is provided with a push-in push rod, and a jaw clamp is coupled to the front end of the cover push rod, The jaws are clamped by the jaw clamp. The blood vessel applying device of claim 1, wherein the elastic snap-in shape is formed by two positioning elastic pieces on the front and rear sides of the bottom of the nail groove bottom, and the two positioning elastic pieces are respectively the front end upturned piece body. The dialing end is an inverted U-shaped piece and is offset from the left and right positioning pieces. A blood vessel applying device according to claim 1 or 2, wherein said collet is in a downwardly inclined state of the front side, an opening is formed at a front end of said rail, and a position corresponding to the opening is in the middle of the bottom of said nail groove A guiding elastic piece is formed, and the guiding elastic piece is a sheet body whose front end is upturned. The blood vessel applying device according to claim 3, 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 4, 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; corresponding to the position of the rail, the upper nail is a middle of the push rod opens a sleeve opening in a direction extending forward and backward to accommodate the guide rod and the sleeve of the nail pusher; a drive assembly is coupled to the rear end of the outer tube, and the drive assembly is The rear push rod and the overlying push rod assembly are coupled and driven. The blood vessel applying device of claim 5, 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 6, 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 7, 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.