TWI645831B - Blood clip applier - Google Patents

Abstract

A clip applying device for a blood vessel clip applier is provided with a clamp mouth rod fixed in an outer tube. The front end of the clamp mouth rod is combined with a clamp mouth portion protruding from the outer tube, and a accommodating portion is provided behind the clamp mouth portion. A plurality of nail clamping tracks is provided with a nail pusher behind the nail clips, a pusher spring is provided on the top of the nail pusher, a nail pusher is provided in the outer tube, and the nail pusher is provided with a plurality of nails. A pushing hole capable of advancing the pushing elastic piece. When the upper nail push rod moves forward and backward, the nail pusher can be pushed forward with each pushing hole in turn, so that the nails respectively enter the mouth of the jaw, and a pincer is used. The mouth clamp drives the mouth of the clamp to clamp the nail, and the clamp device is composed of a structure with fewer parts and does not require a spring to push the nail pusher, thereby achieving the effect that the clamp device can reduce the size of the pipe.

Description

Clip applier for vascular clip applier

The invention relates to a structure of a surgical instrument, and in particular to a clip applier for a vascular clip applier with fewer parts and capable of reducing the diameter of the device.

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 an opening cut off from the surface of the human body, 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 presses the blood vessel clamp on the blood vessel to close the blood vessel.

The existing vascular clip applier is used to extend the front-end long rod-shaped clip applier into the human body during surgery, for example, TW Patent Application No. 104118985 “Automatic Clip Applier” Invention Patent Application (Publication No. 201642812) ), A clamping unit is provided inside the outer sleeve, a clamping portion is provided at the front end of the clamping unit, and a clamping unit is provided to cooperate with the clamping portion to advance the blood vessel clamps forward. A first sleeve and a second sleeve are respectively set in the front and rear positions, and the clamping portion is clamped by the action of the first sleeve moving forward, and the second section is driven in the front section of the first sleeve forward movement process. When the tube moves forward, the second casing will be released from the state of co-movement with the first casing at the later stage of the first casing forward process. At this time, the second casing can be driven to move backwards. The action can drive the clamping unit to advance a blood vessel clamp into the inside of the clamping portion for clamping by the clamping portion.

In the above-mentioned conventional clip applying unit of the automatic clip applier, the first sleeve and the second sleeve are driven by a holding unit. However, the above-mentioned existing clamping unit includes a large number of parts and requires a large space for assembling the above-mentioned components. Therefore, the assembled pipe diameter is about 10 mm in width. Considering the strength required for the structure, such clamping units cannot be used. The diameter of the structure is further reduced. However, when a clip applicator unit with a diameter of 10 mm is in operation, a larger wound must be formed on the human body to provide the clip applicator unit for insertion into the human body. In this way, the wound will heal slowly after surgery. The existing structure of the clip application unit cannot provide users with better use of instruments and cannot improve the effect of wound healing after surgery.

Due to the large number of parts of the existing clip applicator, the tube diameter of the vascular clip applier protruding from the clamp cannot be miniaturized, and it cannot provide better instruments for surgery. For this reason, the present invention designs a clip applicator with fewer parts to achieve the effect of reducing the diameter of the clamp tube of the vascular clip applier.

In order to achieve the above object, the present invention provides a clip applying device for a vascular clip applier, the structure of which includes:

An outer tube, which is a circular long tube body extending in the front-rear direction;

A jaw assembly is inserted into the outer tube, and a jaw rod is fixed in the outer tube. The jaw rod is a long piece extending in the front-rear direction and a jaw is provided at the front end. The front end of the mouth penetrates the front end of the outer tube, a gripper portion is formed at the front end of the jaw, two gripper ribs are formed on the left and right sides of the bottom surface of the gripper portion, and a top is fixed on the top surface of the gripper rod. In the nail groove, a track extending in the front-rear direction is formed in the nail groove. The front end of the track is directly opposite to the rear end of the mouthpiece portion. A plurality of push nails are arranged in a spaced manner at the bottom of the nail groove. A positioning hole of the device is provided with two or more nails successively from front to back in the track, and a nail pusher is slidably arranged in the track. The bottom and top of the nail pusher are each provided with a positioning spring and a pushing spring. The free end of the positioning spring snaps against one of the positioning holes of the nail pusher. The free end of the pushing spring faces upward and protrudes backward from the nail slot. The front end of the nail pusher is used to push the last clip. ;

A nail pusher is inserted into the outer tube and abuts against the top surface of the nail groove. A plurality of pushing holes are provided in the nailer pushrod in an equal and backward arrangement. The free end of the propelling shrapnel is located in one of the propelling holes; and

An overlying push rod assembly is provided with an overlying push rod, the overlying push rod is inserted in the outer tube and abuts against the bottom surface of the jaw pull rod, and a jaw clamp is provided at the front end of the overlying push rod. A clamping groove is formed in the front jaw of the jaw clamp, and the front end of the clamping groove is sleeved on the rear end of the ribs of the two clamps.

Further, the present invention is provided with a nail-changing piece at the front end of the upper nail push rod, and a stopper is formed on the top of the nail pusher upward to cooperate with the top of the front end of the track. A stopper with a narrower width than the stopper is formed on the side, and the stopper can block the stopper to prevent the nail pusher from moving forward from the track.

Further, the rear end of the upper nail push rod and the overlying push rod of the present invention respectively penetrate backward from the rear end of the outer tube, and are respectively provided at the front and rear positions of the rear end portion of the upper nail push rod. The rear long hole of the upper nail putter and a long hole of the upper nail are matched with the position of the long hole of the upper nail, and an overlying hole is inserted in the rear end of the overlying putter. A rear end of the push rod extends a hook piece portion, and a recess is formed inward at the side of the hook piece portion to form a notch, and a back hook is formed at the rear end of the hook piece portion adjacent to the rear side of the notch. The height of the barb is narrower than the depth of the notch, and the forward and backward positions of the upper nail push rod hole are within the range of the notch.

Further, the present invention incorporates a sliding sleeve at the rear end of the outer tube, the sliding sleeve is a tube body extending in the front-rear direction, and the front end portion of the sliding sleeve is fixed to the rear end portion of the outer tube. Match the position of the long hole behind the push-rod putter and the position where the push-fit hole is covered, pass through the sliding sleeve through the long hole of the push-pin positioning pin, cooperate with the push-pin put hole and the notch At the position where the sliding sleeve penetrates a long hole of the positioning pin of the feeding rod, and an inclined surface is formed at the front end of the long hole of the positioning pin of the feeding rod; and the outer tube is provided with a position covering the long hole of the positioning pin of the push rod An overlying putter sliding sleeve is sleeved, and the overlying putter sliding sleeve penetrates an overlying putter positioning pin hole, and an overlying putter positioning pin is inserted and fixed in the overlying putter positioning pin hole, and the cover The pusher rod positioning pin passes through the long hole behind the upper nail pusher rod, and the overlying rod positioning pin is inserted in the overlying pusher rod hole; the sliding sleeve is provided with a long hole of the feeding rod positioning pin. A feeding rod sliding sleeve is sleeved, and the feeding rod sliding sleeve penetrates a feeding rod positioning pin hole, and the feeding rod positioning pin hole is a long same direction as the tangent direction of the sliding sleeve. In the positioning pin holes on the feed rod is inserted a feeding lever positioning pin, the positioning pin on the feed rod passes through the recess, the feeding lever positioning pin inserted in the hole on the staple pusher.

Further, the present invention penetrates a spring positioning pin hole at the rear end of the sliding sleeve, a spring positioning pin is inserted and fixed in the spring positioning pin hole, a spring hook hole is provided in the inverted hook, and the spring A cover spring is hooked between the 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.

Further, the present invention penetrates an outer tube fixing slot at the rear end portion of the outer tube, corresponding to the position of the outer tube fixing slot, a pliers nozzle rod fixing hole is provided in the pliers nozzle rod; The outer tube fixes the position of the long hole, and the front nail push rod is provided with a front long hole of the nail push rod, and the front nail hole is located in front of the rear hole of the nail push rod; The position of the long hole of the outer tube should be fixed, and a long hole of the overlying push rod is provided in the overlying push rod. According to the shape of the long hole of the outer tube, it is formed on the opposite side of the inner peripheral surface of the outer tube. An insert block is positioned by inserting the insert block into the fixed long hole of the outer tube. A fixed pin hole is penetrated at the sliding sleeve provided with the insert block. A fixed pin is inserted through the fixed pin hole, and the fixed pin passes through. The front long hole of the nail push rod and the long hole of the cover push rod are inserted through the fixing hole of the jaw pull rod, and the position of the jaw pull rod is fixed in the outer tube.

Further, the sliding sleeve according to the present invention includes two snap-on half-shells, and the spring positioning pin hole is passed through the rear end of the two half-shells, and a sleeve is set on the rear end of the two half-shells. The fixing sleeve penetrates a bolt hole in the fixing sleeve, and two ends of the spring positioning pin are inserted and fixed to the bolt hole of the fixing sleeve.

Further, the rear end of the jaw rod of the present invention penetrates backward through the rear end of the outer tube, and a long hole of the jaw rod is provided at the rear end of the jaw rod, and the cover is positioned by the push rod. The pin passes through the long hole of the tongs pull rod.

When the present invention is used, the upper nail push rod is driven forward, and a rear edge of one of the pushing holes is used to abut the free end of the nail pusher, and the nail pusher is pushed forward until the positioning elastic sheet is stuck against the next push. The position of the nail positioning hole. In the process, the front end of the nail pusher will push the foremost clip into the mouth of the clip, and then drive the upper nail push rod to retreat, so that the push of the nail pusher has been moved forward. The free end of the shrapnel falls into the previous pushing hole of the pushing hole that just pushed the nail pusher forward, and waits for the next time to drive the nail pusher forward. When the foremost clamping nail enters the clamping mouth portion, the overlying pusher is driven to move forward, and the overlying pusher is used to push the jaw clamp forward, and the clamping of the jaw clamp is used. The groove presses the ribs of the two clamping mouths tightly to drive the clamping mouth portion to clamp the clamping nail.

The effect of the present invention lies in that the present invention can drive the nail pusher and the jaw part of the nail assembly of the jaw in the outer tube only by the operation of the nail pusher and the covering pusher. The operation of nail and clamping uses fewer parts than existing clamping devices and does not require space for assembling springs. Therefore, the diameter after composition can be reduced to 5mm, making the clamping device compact, except when used in surgical instruments. In addition, when the human body forms a small wound, the invention can be extended to perform operations, and the effect of postoperative wound healing can be improved. The structure is simple, so the cost is low, and the unit price is low.

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 embodiment shown in the drawings is further described in detail as follows.

Please refer to the preferred embodiment of the present invention shown in FIG. 1 to FIG. 5. The present invention provides a clip applicator for a vascular clip applier, which includes an outer tube 10 and a jaw penetrating through the outer tube 10. Nail assembly 20, an upper nail push rod 30 inserted in the outer tube 10, an overlying push rod assembly 40 inserted in the outer tube 10, and an engagement drive assembly connected to the rear end of the outer tube 10. 50 of which:

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 and FIG. 3, the jaw nail assembly 20 is fixed with a jaw rod 21 in the outer tube 10. The jaw rod 21 is a long piece extending in the front-rear direction, and the jaw rod The rear end of 21 penetrates the rear end of the outer tube 10 backwards, and a long hole 211 of the jaw rod is provided at the rear end of the jaw pull rod 21, corresponding to the position of the long hole 11 of the outer pipe, and the jaw rod 21 is provided with a jaw tie rod fixing hole 212, a jaw 22 is connected to the front end of the jaw pull rod 21, the front end of the jaw 22 penetrates the front end of the outer tube 10, and a front end of the jaw 22 is formed The mouthpiece portion 221 is formed with two mouthpiece ribs 222 on the left and right sides of the bottom surface of the mouthpiece portion 221. A nail groove 23 is fixed on the top surface of the jaw rod 21, and the nail groove 23 is a long portion extending in the front-rear direction. A groove 231 is formed in the nail groove 23 and extends in the front-rear direction. The front end of the track 231 faces the rear end of the clip portion 221, and a stop portion 232 is formed on the top side of the front end portion of the rail 231. A plurality of nail pusher positioning holes 233 are provided on the bottom surface of the nail groove 23 so as to be arranged at regular intervals in the front and back.

In the track 231, two or more clip nails 24 are successively provided from front to back. A nail pusher 25 is slidably arranged in the track 231. Each of the nail pusher 25 has a rear end at the bottom and a rear side at the top. A positioning spring piece 251 and a pushing spring piece 252, the free end of the positioning spring piece 251 is clamped against one of the nail pushing device positioning holes 233 of the plurality of nail pushing device positioning holes 233, and the free ends of the pushing elastic piece 252 face upward and backward Extending the nail groove 23, a stopper 234 is formed to protrude upward on the front side of the top of the nail pusher 25. The width of the stopper 234 is narrower than the width of the stopper 232, so that the stopper 232 can block The stopper 234 prevents the nail pusher 25 from moving forward out of the track 231, and the front end of the nail pusher 25 is used to push the last clamping nail 24.

The nail pusher 30 is an elongated sheet body extending in the front-rear direction. The nail pusher 30 is inserted into the outer tube 10 and abuts against the top surface of the nail groove 23. The front half of 30 is provided with a plurality of pushing holes 31 at the front and back at an equal interval. The free end of the pushing elastic piece 252 of the nail pusher 25 is located in one of the pushing holes 31 of the pushing holes 31, and nails are nailed on the pushing holes 31. A nail piece 32 is provided at the front end of the push rod 30, and the rear end of the upper nail push rod 30 penetrates the rear end of the outer tube 10 rearwardly. The rear long hole 33 of the nail pusher and a long hole 34 of the nail, the long rear hole 33 of the nail is a long hole extending in the front-rear direction, and the long rear hole 33 of the nail The positions of the holes 211 are stacked one on top of the other, corresponding to the positions of the fixed long holes 11 of the outer tube. A nail pusher front long hole 35 is formed on the nail pusher 30, and the nail pusher front long hole 35 is located on the top. In front of the rear long hole 33 of the nail pusher, the aforementioned jaw pull rod fixing hole 212 is located below the front end of the front long hole 35 of the nail pusher.

The covering push rod assembly 40 is provided with a covering push rod 41 in the outer tube 10. The covering push rod 41 is an elongated piece extending in the front-rear direction and abuts against the bottom surface of the jaw pull rod 21. The rear end of the overlying pusher 41 penetrates rearwardly out of the rear end of the outer tube 10, and matches the position of the long hole 33 behind the nail pusher. The pusher hole 411 corresponds to the position of the outer tube fixing long hole 11. A long pusher hole 412 is inserted in the overlying pusher 41, and the above-mentioned jaw pull rod fixing hole 212 is located in the long hole of the overlying pusher. Above the front end portion of 412, a hook piece portion 413 is extended rearwardly at the rear end of the covering push rod 41, and a side of the hook piece portion 413 is recessed inwardly to form a notch 414. The front and rear positions of 34 are within the range of the notch 414, and the rear end of the nail push rod 30 is bent toward the inside of the notch 414, so that the nail push rod hole 34 is located within the range of the inside of the notch 414, Adjacent to the rear side of the notch 414 is an inverted hook 415 formed at the rear end of the hook piece portion 413. The height of the inverted hook 415 is narrower than the depth of the notch 414. A spring hook is inserted into the inverted hook 415. 416.

A clamp mouth clamp 42 is coupled to the front end of the covering push rod 41. The clamp mouth clamp 42 is an elongated block extending in the front-rear direction, and a top of the clamp mouth clamp 42 is formed. A clamping groove 421 opened at the front, and a front end of the clamping groove 421 is sleeved at a rear end of the two clamping nozzle ribs 222.

The engaging 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 which are fastened up and down, and cooperates with the shape of the outer tube fixing slot 11 in the Insertion blocks 511 are formed on opposite sides of the inner peripheral surface of the front end of the outer tube 10, and the inserts 511 are inserted into the outer tube fixing slot 11 for positioning, so that the front end of the sliding sleeve 51 is fixed and fixed to the outer tube 10. At the rear end of the sliding sleeve 51, a fixing pin hole 512 is penetrated at the insertion block 511, and a fixing pin 52 is inserted through the fixing pin hole 512. The fixing pin 52 passes through the front of the nail push rod. The front end portion of the long hole 35 and the front end portion of the covering push rod long hole 412, the middle of the fixing plug 52 is inserted through the jaw rod fixing hole 212 of the jaw rod 21, and the jaw rod 21 is fixed Inside 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 pushing 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.

A cover pusher slide sleeve 53 is sleeved at the position where the sliding sleeve 51 is provided with the cover push pin positioning pin long hole 513, and the cover push rod slide sleeve 53 is axially penetrated through a cover push rod positioning A pin hole 531 is inserted into and fixed to the overlying pusher positioning pin hole 531. The overlying pusher positioning pin 54 passes through the long hole 33 behind the nail pusher and the jaw pull rod. A long hole 211, the overlying pusher positioning pin 54 is inserted in the overlying pusher hole 411 of the overlying pusher 41, and can be positioned through the overlying pusher when the overlying pusher slide sleeve 53 is advanced The pin 54 drives the covering pusher 41 forward.

Please refer to FIG. 2 to FIG. 5, 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, and the feeding rod sliding sleeve 55 is along the axial direction. A feeding rod positioning pin hole 551 is penetrated, and a feeding rod positioning pin 56 is inserted and fixed in the feeding rod positioning pin hole 551. The feeding rod positioning pin 56 passes through the notch 414 and the feeding rod positioning pin. 56 is inserted into the nail pusher hole 34 at the rear end of the nail pusher 30. Please refer to FIG. 6, since the feeding rod positioning pin 56 leans to the inner side of the recess 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 with 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 feeding rod sliding sleeve 55 can be driven to move backward, and the feeding pin positioning pin 56 drives the nail push rod 30 to move backward, so that the nail push. The lever 30 moves back and forth once. When the overturning push rod 41 returns to the original position backward, the inverted hook 415 returns to a position capable of hooking the loading rod positioning pin 56 forward.

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 shells A, and a fixing is sleeved at the rear end of the two half shells A A sleeve 57 penetrates a pin hole 571 in the fixing sleeve 57, and a spring positioning pin 58 is inserted in the pin hole 571, and the spring positioning pin 58 is inserted in the spring positioning pin hole 516. After covering the push rod 41 A cover spring 59 is hooked between the spring hook hole 416 and the spring positioning pin hole 516 at the end, so that the cover push rod positioning pin 54 abuts behind the cover push rod positioning pin long hole 513. end.

When the foregoing first preferred embodiment of the present invention is used, a driving mechanism, such as a gripping unit of an existing automatic clip applier, is used to drive the cover sliding rod slide sleeve and the feeding rod slide sleeve 55 to move. The driving mechanism for the action of the preferred embodiment 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 a manner consistent with the operation of the preferred embodiment, it can drive the preferred embodiment. Examples.

Please refer to FIG. 6. When the first preferred embodiment of the present invention is used, the overlying pusher slide sleeve 53 is driven forward. The overlying pusher slide sleeve 53 drives the overlying pusher positioning pin 54. The pusher 41 is moved forward. During the forward move of the overlying pusher 41, the inverted hook 415 at the rear end of the overlying pusher 41 hooks the positioning pin 56 of the loading rod, so that the upper pusher is nailed. 30 advances with the overturning pusher 41. When the loading lever 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 overriding pusher 41 continues to move toward In the front, the covering push rod 41 continues to move forward while driving the feeding rod sliding sleeve 55 to move backward, so that the feeding rod sliding sleeve 55 uses the feeding rod positioning pin 56 to drive the nail driving rod 30 to move backward. During the entire advance of the overlying putter 41, the nail pusher 30 moves back and forth once in a row.

When the push-rod 30 is moved forward and backward once, please refer to FIG. 7. The pushing hole 31 where the free end of the pushing elastic piece 252 is advanced, and the rear edge of the pushing hole 31 abuts against the pushing elastic piece. The free end of 252 pushes the nail pusher 25 forward, so that the nail pusher 25 pushes the frontmost nail 24 into the mouthpiece portion 221 from the back to the front, and then the nail pusher 30 Move backward so that the free end of the pushing spring piece 252 of the nail pusher 25 that has been moved forward is located in a pushing hole 31 immediately before the pushing hole 31 that pushes the nail pusher 25 forward. During the advancement of the retraction plunger 41, please refer to FIG. 8. When the foremost clamp nail 24 is sent into the jaw part 221, the retraction plunger 41 continues to push the jaw forward. The clamp 42 is moved forward, so that the clamp portion 221 clamps the clamp nail 24 in such a manner that the clamp groove 421 of the jaw clamp 42 presses the two clamp ribs 222 to abut.

The above description is only the preferred embodiments of the present invention, and is 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.

10‧‧‧ Outer tube

11‧‧‧Slot for fixing the outer tube

20‧‧‧Nail nail assembly

21‧‧‧Plier mouth lever

211‧‧‧Slotted hole

212‧‧‧ Tie rod fixing hole

22‧‧‧ Clamp

221‧‧‧ Collar

222‧‧‧ Collar Ribs

23‧‧‧nail groove

231‧‧‧track

232‧‧‧stop

233‧‧‧ Nail pusher positioning hole

234‧‧‧stop

24‧‧‧Clip

25‧‧‧nail pusher

251‧‧‧Positioning shrapnel

252‧‧‧advance shrapnel

30‧‧‧Putting putter

31‧‧‧ advance hole

32‧‧‧Pick nails

33‧‧‧Slotted holes

34‧‧‧Stud Hole

35‧‧‧Slotted front hole

40‧‧‧ Override putter assembly

41‧‧‧ Override putter

411‧‧‧ over putter hole

412‧‧‧ Covered into the long hole of the putter

413‧‧‧ Hook Section

414‧‧‧notch

415‧‧‧ inverted hook

416‧‧‧Spring hook hole

42‧‧‧Jaw mouth clamp

421‧‧‧ clamping groove

50‧‧‧Connecting drive components

51‧‧‧Slip tube

511‧‧‧block

512‧‧‧Fixed bolt holes

513‧‧‧ Covered into the long hole of the push rod positioning pin

514‧‧‧ Long hole for dowel pin

515‧‧‧ bevel

516‧‧‧Spring positioning pin hole

52‧‧‧Fixed bolt

53‧‧‧ Over putter slide

531‧‧‧ Overlaid into the positioning pin hole of the push rod

54‧‧‧ Overlaid with putter positioning pin

55‧‧‧Loading rod slide sleeve

551‧‧‧ dowel pin positioning pin hole

56‧‧‧ dowel pin

57‧‧‧ fixed sleeve

571‧‧‧pin hole

58‧‧‧Spring positioning pin

59‧‧‧ Overlay spring

A‧‧‧Half tube shell

FIG. 1 is a perspective view of a preferred embodiment of the present invention. FIG. 2 is an exploded view of a preferred embodiment of the present invention. FIG. 3 is an exploded view of an engagement driving assembly according to a preferred embodiment of the present invention. FIG. 4 is a top view of a preferred embodiment of the present invention. FIG. 5 is a bottom view of a preferred embodiment of the present invention. FIG. 6 is a schematic diagram of the implementation actions in the latter stage of the preferred embodiment of the present invention. FIG. 7 is a schematic diagram of the operation of pushing the nail pusher according to the preferred embodiment of the present invention. FIG. 8 is a schematic diagram of an implementation action of driving the clamping mouth portion according to a preferred embodiment of the present invention.

Claims (7)

A clip applying device for a vascular clip applier includes: an outer tube, which is a circular long tube body extending in the front-rear direction; a nail assembly on the mouth of the jaw, inserted in the outer tube and in the outer tube A pliers mouth pull rod is fixed therein. The pliers mouth pull rod is a long piece extending in the front-rear direction and is provided with a pliers mouth at the front end. The front end of the pliers mouth penetrates the front end of the outer tube and forms a The mouthpiece part is formed with two mouthpiece ribs on the left and right sides of the bottom surface of the mouthpiece part, a nail groove is fixed on the top surface of the jaw rod, and a track extending in the front-back direction is formed in the nail groove. The front end of the head is facing the rear end of the mouthpiece part. A plurality of nail pusher positioning holes are arranged in a spaced-apart manner at the bottom of the nail groove. There are two or more holes in the track from front to back. A nail pusher is slidably provided in the track, and the bottom and top of the nail pusher are each provided with a positioning spring and a pushing spring, and the free end of the positioning spring is caught in one of the positioning holes of the nail driving. The free end of the pushing shrapnel is facing up and sticks out of the nail slot backward, the front end of the nail pushing device Push the last clamping nail on the top; a top nail push rod is inserted in the outer tube and abuts against the top surface of the nail groove, and the top nail push rods are arranged at equal intervals in front and back There are multiple pushing holes, the free end of the pushing shrapnel is located in one of the pushing holes; a covering push rod assembly is provided with a covering push rod which is inserted into the outer tube and abuts On the bottom surface of the jaw tie rod, a jaw clamp is provided at the front end of the overlying push rod, and a clamping groove opened at the front is formed in the jaw clamp, and the front end of the clamping groove is sleeved on The rear ends of the two clamping jaw ribs; and the rear ends of the upper nail push rod and the overlying push rod respectively penetrate backward from the rear end of the outer tube, A back long hole and a top nail hole are respectively inserted in the front and rear positions. According to the position of the long hole at the back of the top nail, a back cover is inserted at the rear end of the over shaft. A hole extends rearwardly at the rear end of the covering push rod, and a recess is formed inwardly at the side of the hook portion, and a recess adjacent to the rear side of the recess is formed at the hook. A rear end portion of the undercut is formed, the height of the barbs in a narrow depth of the recess, the upper ram staple holes located within the range of the longitudinal recess. According to the clamping device of the vascular clip applier of claim 1, wherein a tip of the nail pusher is provided at a front end thereof, a top of the nail pusher projects upward to form a stopper, The stopper is located in front of the pushing elastic piece, and cooperates with the stopper to form a stopper with a narrower width than the stopper on the top side of the front end portion of the track. The stopper can stop the stopper to avoid The nail pusher moves forward out of the track. The clamping device of the vascular clip applier according to claim 2, wherein a sliding sleeve is combined at the rear end of the outer tube, the sliding sleeve is a tube body extending in the front-rear direction, and the front end of the sliding sleeve is sleeved It is fixed on the rear end of the outer tube, matches the position of the long hole of the upper nail push rod and the position of covering the push rod hole. The position of the above-mentioned nail push rod hole and the notch, the sliding sleeve penetrates a long hole of the feeding rod positioning pin, and an inclined surface is formed at the front end of the long hole of the feeding rod positioning pin; An overlying pusher slide sleeve is sleeved at the position of the long hole of the overlying pushrod positioning pin, and an overlying pusher positioning pin hole is penetrated in the overlying pusher sliding sleeve, and inserted in the overlying pusher positioning pin hole An overlying pusher positioning pin is fixed, the overlying pusher positioning pin passes through the long hole behind the upper nail 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 feeding rod positioning pin has a long hole, and the feeding rod sliding sleeve penetrates a feeding rod positioning pin hole. The feeding rod positioning pin hole is connected with the A long hole in the same direction as the tangent direction of the sliding sleeve, a feeding rod positioning pin is inserted into the feeding pin positioning pin hole, the feeding rod positioning pin passes through the recess, and the feeding rod positioning pin is inserted in the Screw on the putter hole. The clamping device of the vascular clip applier according to claim 3, 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 for hooking, 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 the long hole of the cover push rod positioning pin. Back end. The clamping device of the vascular clip applier according to claim 4, wherein an outer tube fixing slot is penetrated at the rear end portion of the outer tube, corresponding to the position of the outer tube fixing slot, at the jaw pull rod A fixing hole for the clamp rod is provided through the hole; corresponding to the position of the fixed hole of the outer tube, a front long hole for the top nail push rod is provided, and the front long hole for the top nail push rod is located in the In front of the long hole after the nail push rod; corresponding to the position of the fixed hole of the outer tube, a cover push rod long hole is provided in the cover push rod; according to the shape of the fixed hole of the outer tube, An insert is formed on each of opposite sides of the inner peripheral surface of the outer tube, and the insert is inserted into the fixed long hole of the outer tube for positioning. The slide sleeve is provided with the insert to penetrate a fixed pin hole, and the fixed pin hole A fixed pin is inserted, the fixed pin passes through the front long hole of the nail push rod and the long hole of the cover push rod, the fixed pin is inserted through the fixing hole of the jaw rod, and the position of the jaw rod It is fixed in the outer tube. According to the clamping device of the vascular clip applier according to claim 5, wherein the sliding sleeve comprises two buckle halves, and the spring positioning pin holes pass through the rear ends of the two halves, A fixing sleeve is sleeved at the rear end of the two half-shells, and a bolt hole is penetrated through the fixing sleeve, and two ends of the spring positioning pin are inserted and fixed to the bolt hole of the fixing sleeve. The clamping device of the vascular clip applier according to claim 6, wherein the rear end of the jaw pull rod penetrates backward from the rear end of the outer tube, and a jaw pull rod is inserted at the rear end of the jaw pull rod. The long hole, the covering push rod positioning pin passes through the long hole of the jaw pull rod.