WO2020051864A1 - Continuous clip feeding apparatus of vascular clip applier - Google Patents

Abstract

A continuous clip feeding apparatus of a vascular clip applier, comprising a rod body (10). The front end of the rod body (10) is provided with a jaw (20) which is driven to open or close; a clip feeding passage (15) is formed in the rod body (10); a clip accommodating cavity (151) is formed at the front end of the clip feeding passage (15); one side of the clip feeding passage (15) is fixedly provided with a blocking rod (40); the blocking rod (40) is provided with a plurality of stop elastic members (41); the front end of the blocking rod is provided with a positioning elastic member (42) extending into the clip accommodating cavity (151); a clip box (50) is provided with respect to the blocking rod (40); a plurality of propulsion elastic members (52) matching the plurality of stop elastic members (41) is provided on the clip box (50); a plastic clip (60) is accommodated between every two adjacent propulsion elastic members (52); the propulsion elastic members (52) move back and forth through the clip box (50) in a reciprocating mode to push the plastic clips (60) into the clip accommodating cavity (151) in sequence, and the plastic clips (60) in the clip accommodating cavity (151) are pushed to the front end of the jaw (20), thereby achieving the effect of continuous clip pushing and applier application.

Description

Continuous nail feeding device for vascular clip applier Technical field

The invention relates to a structure of a surgical instrument, in particular to a continuous nail feeding device of a blood vessel clip applier for guiding plastic nails by rails in a clamp mouth.

Background technique

During the laparoscopic surgery, the blood vessel needs to be closed to avoid blood loss from the incision at the surgical site. At this time, a surgical instrument that closes the blood vessel, such as a vascular clip applier, is used to close the blood vessel. The use method of the vascular clip applier is that a plastic nail is provided in the clamp mouth of the front end of the vascular clip applier, and the clip mouth and the plastic nail are extended into the human body from the opening cut off by the human body surface, and then the vascular clip applier is operated. The grip of the device drives the clamping mouth to close, so that the plastic nail is clamped on the blood vessel of the human body to close the blood vessel.

The structure of the plastic nail used in the above-mentioned vascular clip applier is that a buckle is formed at the front end of the two clamp arms connected at the rear end, and a lateral columnar positioning rod is formed at the front end of the two clip arms respectively. When the clamp is used, the front end of the clamp mouth is opened to a nail box, and a plastic nail is used, so that the plastic nail is engaged in the clamp mouth in an open state for use, but since each time the clamp is applied, Both need to clamp the plastic nail once. If the operation requires the use of multiple plastic nails to stop bleeding, the vascular clip applier needs to enter and exit the human body multiple times to access the plastic nail, which makes the operation very troublesome.

Summary of the Invention

Because the existing vascular clip applying device can only take one plastic nail for clamping at a time, it causes trouble in use. For this reason, the present invention is provided with a structure for continuously inserting nails in the vascular clip applier, so as to achieve the effect that the vascular clip applicator can continuously clip.

In order to achieve the above object, the present invention provides a continuous nail-feeding device for a vascular clip applier, comprising: a shaft, the inside of the shaft forms a nail-injection track extending in the front and rear directions; A nail retaining cavity is formed at the front end; a blocking rod is fixed on a side wall of the nail feeding rail, and a plurality of blockings are extended into the nail feeding rail in an equal interval arrangement manner before and after the blocking rod. A stopper piece, the stopper bar is provided with a positioning spring piece on the front side of the frontmost stopper piece, the front end of the positioning spring piece extends into the nail retention cavity, and the front and rear between the positioning spring piece and the frontmost stopper piece The distance is shorter than the front-to-back distance between two adjacent stoppers; a staple box is a long rod body extending in the front and rear directions and is slidably inserted in the nail-feeding track and formed in the staple box A nail placing groove extending in the front and rear directions, a plurality of positioning elastic pieces are inserted into the nail placing groove, and the positions of the plurality of positioning elastic pieces are aligned with the nail placing grooves at equal intervals before and after the inner surface of the nail placing groove. A plurality of propulsion shrapnels are extended in the ditch. At the front of the nail box, a plurality of plastic nails are slidably embedded in the nail groove. Each plastic nail is respectively located between two advancing elastic pieces adjacent to the front and rear, and the rear end of each plastic nail abuts. In front of each positioning spring; and a clamping mouth, which is coupled to the front end of the shaft and includes an upper jaw and a lower jaw, the clamping mouth is driven to open or close the upper jaw and the lower jaw to form a An upper guide track, the front end of which is connected to an upper bracket, the rear end of which is in communication with the nail retention cavity, and a lower guide track is formed in the lower jaw, and the front end of the lower guide track is connected Lower bracket, the rear end of the lower guide track communicates with the nail retention cavity.

Further, the present invention is provided with a gripper seat at the front end of the shaft, the gripper mouth is pivotally connected to the front end of the gripper seat, and the nail feeding track passes through the gripper seat, corresponding to the nail retention cavity. Position, a recess is formed on the side in front of the mouthpiece seat, and the nail indwelling cavity is located at the position of the recess; a cover is extended on the side of the upper jaw, and the cover It is the shell and covers the upper half of the nail indwelling cavity. A lower cover is formed at one side of the lower jaw, and the lower cover is the shell and covers the lower half of the nail indwelling cavity.

Further, the bottom edge of the upper cover according to the present invention is arc-shaped and recessed inward at the middle to form an upper view window; the top edge of the lower cover is arc-shaped and recessed inward at the middle to form a lower view window .

Furthermore, the shaft according to the present invention further includes an outer tube and a bundle of sleeves. The outer tube includes two left and right half-shells combined, and the front end of the half-shell is projected from the other half-shell A front hook is formed at the front end of the half-shell that protrudes forward; according to the shape of the rear hook, a front hook is formed at the rear end of the chuck seat, and the front hook and the The rear hook is engaged so that the mouthpiece seat is connected to the front end of the outer tube, and the bundle sleeve is sleeved and positioned around the front hook and the rear hook.

Preferably, in the second half of the shaft, the present invention penetrates a long groove of a driving pin extending in the front-to-rear direction, and a fixed bolt is pivotally provided at the rear end of the shaft; in the shaft A driving rod is penetrated, and the front end of the driving rod is connected to drive the clamping mouth to open or close the upper jaw and the lower jaw. The rear end of the driving rod extends out of the rear end of the shaft and passes through. A coupling perforation is provided with a driving coupling hole at the rear end of the magazine; a driving ring is sleeved around the shaft, and a driving pin is laterally penetrating the driving ring, and the driving pin passes through the driving The rear end of the long slot of the bolt and the drive coupling hole are combined with a return spring between the fixed bolt and the magazine; a rear end cover is slidably sleeved at the rear end of the outer tube, An end is pivoted laterally through a coupling pin that passes through the coupling perforation of the driving rod, and a top support spring is provided in the rear end cover, and both ends of the top support spring abut against the rear of the rear end cover. Between the end and the rear end of the outer tube.

When the present invention is used, the magazine is driven to move back and forth in the front-to-rear direction in sequence. When the magazine is driven to reciprocate for the first time, the second advance of the magazine by the front of the magazine will move the plastic nail in the forefront. Push forward into the nail indwelling cavity, and the remaining plastic nails will be pushed forward by the pushing springs in the back and over the blocking springs in the front, and then the nail box will be moved back to the original position. The nails are blocked by the blocking springs at the rear, so they will not follow. Then the nail magazine is driven to advance again. At this time, the pushing spring at the front end of the nail magazine pushes the plastic nail located in the nail indwelling cavity into the clamp mouth, so that the plastic nail follows the upper guide track and The lower guide rail slides forward to the front end of the clip end, and the second plastic nail from the top is added to the nail retention cavity for use. When the nail box is retracted back to the original position, the user can The upper jaw and lower jaw of the clamp mouth are driven to close, so that the plastic nail is clamped around the blood vessel, and then the clamp mouth is opened to disengage the fastened plastic nail from the clamp mouth. Repeat the above operation so that the user can continuously apply the clamp. Multiple plastic nails.

The effect of the present invention is that when the nail magazine is driven for reciprocating motion, multiple plastic nails can be sequentially conveyed into the clamping mouth for clamping, so that the effect of continuously applying multiple plastic nails is achieved, and it is very convenient to use and does not require multiple times Get in and out of the body with plastic nails. In addition, when the plastic nails are indwelled in the nail indwelling cavity, since the plastic nails are abutted laterally by the positioning elastic sheet, the plastic nails can be stably positioned in the nail indwelling cavity for use.

BRIEF DESCRIPTION OF THE DRAWINGS

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

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

3 is a partially enlarged exploded view of a preferred embodiment of the present invention;

FIG. 4 is an exploded view of a clamping mouth of a preferred embodiment of the present invention; FIG.

5 is a partially enlarged perspective view of a preferred embodiment of the present invention;

6 is a cross-sectional view of a clamping nozzle of a preferred embodiment of the present invention;

FIG. 7 is another angle sectional view of the clamping nozzle of the preferred embodiment of the present invention; FIG.

8 is a cross-sectional view of a preferred embodiment of the present invention;

9 is another cross-sectional view of a preferred embodiment of the present invention;

FIG. 10 is a schematic diagram of the action of pushing a plastic nail for the first time in a preferred embodiment of the present invention; FIG.

FIG. 11 is a schematic diagram of the operation of pushing a plastic nail into a nail indwelling cavity according to a preferred embodiment of the present invention; FIG.

FIG. 12 is a schematic diagram of an operation of pushing a plastic nail into a clamp mouth according to a preferred embodiment of the present invention; FIG.

13 is a perspective view of a plastic nail provided in a clamping mouth of a preferred embodiment of the present invention;

FIG. 14 is a perspective view of a preferred embodiment of the present invention mounted on a driver.

In the figure, the corresponding relationship between each component and the reference numeral is:

10-shaft: 11 outer tube

111 half-tube shell 112 rear hook

113 drive pin long groove 114 fixing pin hole

115Fixed Bolt 12 Clip Holder

121 front card hook 122 section

123 notch 124 axis hole

13-beam tube 14 drive rod perforation

15 nails track 151 nail indwelling cavity

20 clips, 21 clips

211 upper jaw 2111 upper jaw side wall

2112 upper jaw ridges 212 upper cover

2121 upper viewing window 213 upper operating arm

2131 upper shaft hole 2132 upper oblique hole

22 Lower jaw 221 lower jaw

2211 Side wall of the lower jaw

222 Under cover 2221 Look down window

223 lower operating arm 2231 lower shaft hole

2232 Lower oblique hole 23 upper guide track

231 upper inclined section 232 upper bracket

Exit 233, exit 234

235 upper demolding long holes 24 guide rails

241 lower incline section 242 lower bracket

Exit 243. Exit through 244

245 long holes for demoulding under 25 rotary shafts

30 drive lever 31 shaft lever

32 driving film: 321 long grooves for driving bolts

322 fixed latch groove 323 combined perforation

40 stopper bar 41 stopper shrapnel

42 positioning shrapnel 50 nails

51 置 nail 沟 52 push the shrapnel

53Drive combination hole 54Reset spring hook hole

60 plastic nails 61 clip arms

62 buckle 63 positioning rod

70 drive structure 71 drive ring

711 drive pin hole 712 drive pin

72 rear cover 721 combined bolt holes

722 Combined latch 73 Return spring 73

74 Top Support Spring 80 Drive

detailed description

In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The present invention is described in further detail below with reference to the drawings:

Please refer to the preferred embodiment of the present invention shown in FIG. 1 to FIG. 7. The present invention provides a continuous nail feeding device for a vascular clip applier, which includes a shaft 10 and a clip pivotally connected to the front end of the outer tube 10. Nozzle 20, a driving rod 30 inserted in the outer tube 10 to drive the clamping nozzle 20 to open or close, a stopper rod 40 fixed in the outer tube 10, a The nail box 50, a plurality of plastic nails 60 disposed in the nail box 50, and a driving structure 70, wherein:

Please refer to FIG. 2 to FIG. 4. The shaft 10 includes an outer tube 11, a mouthpiece holder 12 and a bundle of sleeves 13. The outer tube 11 is a long tube body extending in the front-rear direction. The tube 11 includes two left and right half-shells 111, in which the front end of the half-shell 111 on the right side protrudes from the front end of the half-shell 111 on the left and the half-shell 111 on the right A rear hook 112 is formed at the front end of the outer tube 11, and a driving pin long groove 113 extending in the front-rear direction is transversely penetrated in the rear half of the outer tube 11. A fixed bolt hole 114 is transversely penetrated in the rear end of the outer tube 11. A fixed bolt 115 is inserted through the fixed bolt hole 114; the clamp base 12 is a rod-shaped block extending in the front and rear directions, and is formed on the left side of the rear end of the clamp base 12 in accordance with the shape of the rear hook 112. A front hook 121 protruding backward, the front hook 121 is engaged with the rear hook 112, so that the rear end of the chuck seat 12 is connected to the front end of the outer tube 11; the bundle sleeve 13 is positioned to fit. Around the outer tube 11, the front end of the bundle sleeve 13 extends against the rear end of the mouthpiece holder 12 and covers the front hook 121 and the rear hook 112, so that The clip 12 engaged with the nozzle housing outer tube 11 is fixed.

A cutout 122 is formed in the left half of the front of the jaw base 12 and is opened in the front. The right half of the front of the jaw base 12 is recessed backward to form a notch 123. The rear edge of the notch 123 is The shape of the concave arc surface corresponds to the left and right sides of the cutout. A shaft hole 124 is formed in the front end portion of the jaw holder 12 in the transverse direction, and the shaft hole 124 passes through the front end portion of the cutout 122. The shaft The right end of the hole 124 communicates with the notch 123 and corresponds to the position of the cutout 122. A left-half portion of the mouthpiece holder 12 and a left-hand side of the outer tube 11 penetrate through the front and rear directions to form a driving rod perforation 14 The front end of the driving rod perforation 14 communicates with the slit 122. A right-half portion of the mouthpiece holder 12 and a right-hand side of the outer tube 11 penetrate through the front-rear direction to form a nail-injection track 15. A nail retaining cavity 151 is formed at the front end of the nail rail 15. For example, the nail retaining cavity 151 is formed at the position of the notch 123 in the preferred embodiment.

Please refer to FIG. 4 to FIG. 7. The gripping nozzle 20 includes an upper gripping nozzle 21 and a lower gripping nozzle 22 which are mated up and down. The upper gripping nozzle 21 and the lower gripping nozzle 22 are located on the gripper seat 12. In front of. The upper jaw 21 is provided with an upper jaw 211 extending in the front and rear directions. Two upper jaw sidewalls 2111 are formed on the left and right sides of the upper jaw 211, and the upper and lower positions of the opposite sides of the two upper jaw sidewalls 2111 are respectively inward. The upper jaw ridges 2112 are formed to protrude in the front and rear directions. The distance between the two upper jaw ridges 2112 protruding inward is shorter than the distance between the two upper jaw side walls 2111. An upper guide track 23 is formed between 2112 and extends in the front and rear directions.

The rear end of the upper guide rail 23 is an open end and communicates with the upper side of the nail indwelling cavity 151. A forward inclined portion 231 is formed at the front end of the upper guide rail 23 and is inclined downward. The bottom surface is recessed to form a horizontal column-shaped upper bracket 232, and the front end of the upper inclined section 231 forms an upper outlet 233 connected to the upper bracket 232; a forward and backward direction is formed below the upper guide rail 23 The extended upper penetration opening 234 is narrower than the left and right widths of the upper guide rail 23, and the front and rear ends of the upper penetration opening 234 are respectively connected to the upper bracket 232 and the nail. The rails 15 communicate with each other, and an upper release slot 235 extending in the front and rear directions is formed above the upper guide rail 23. According to the position of the notch 123, an upper cover 212 is formed to extend rearwardly on the right side of the rear end of the upper jaw 211. The upper cover 212 is a shell and is shaped to fit the contour of the periphery of the mouthpiece seat 12. The upper cover 212 covers The notch 123 is the upper half of the nail retention cavity 151. The bottom edge of the upper cover 212 is arc-shaped and recessed inwardly in the middle to form a top view window 2121.

According to the position of the slit 122, an upper operation arm 213 is formed to extend rearwardly on the left side of the rear end of the upper jaw 211, the upper operation arm 213 extends into the slit 122, and is laterally inserted on the front side of the upper operation arm 213 An upper shaft hole 2131 is overlapped with the shaft hole 124 of the chuck base 12, and an upper inclined hole 2132 is formed in the rear side of the upper operation arm 213, which is low in front and high in back.

The lower jaw 22 is provided with a lower jaw 221 extending in the front and rear directions. Two lower jaw side walls 2211 are formed on the left and right sides of the lower jaw 221, and the upper and lower positions of the opposite sides of the two lower jaw side walls 2211 are respectively inward A lower jaw ridge 2212 is formed to protrude in the front and rear directions. The distance between the two lower jaw ridges 2212 protruding inward is shorter than the distance between the two lower jaw side walls 2211. A lower guide rail 24 is formed between 2212 and extends in the front and rear directions.

The rear end of the lower guide rail 24 is an open end and communicates with the lower side of the nail indwelling cavity 151. A forward inclined lower inclined section 241 is formed at the front end portion of the lower guide rail 24. The top surface is recessed to form a horizontal column-shaped lower bracket 242, and the front end of the lower inclined section 241 forms a lower outlet 243 connected to the lower bracket 242; and a front and rear are formed above the lower guide rail 24 The lower through hole 244 extending in the direction is narrower than the left and right widths of the lower guide rail 24, and the front and rear ends of the lower through hole 244 are respectively connected to the lower bracket 242 and the inlet. The nail rails 15 communicate with each other, and a lower demolding long hole 245 extending in the front and rear directions is formed below the lower guide rail 24. According to the position of the notch 123, a lower cover 222 is formed to extend rearwardly on the right side of the rear end of the lower jaw 221. The lower cover 222 is a housing and has a shape matching the shape of the contour around the mouthpiece seat 12. The lower cover 222 covers The notch 123 is the lower half of the nail retention cavity 151 outside. The top edge of the lower cover 222 is arc-shaped and recessed inward in the middle to form a lower viewing window 2221.

According to the position of the cutout 122, a lower operating arm 223 is formed to extend backward on the left side of the rear end of the lower jaw 221. The lower operating arm 223 extends into the cutout 122 and overlaps the upper operating arm 213, and operates at the lower position. A lower shaft hole 2231 is horizontally penetrated on the front side of the arm 223. The lower shaft hole 2231 coincides with the upper shaft hole 2131 and the shaft hole 124. A shaft 25 is inserted and fixed in the shaft hole 124, and the shaft 25 pivots through the lower shaft. The shaft hole 2231 and the upper shaft hole 2131 pass through a lower inclined hole 2232 with a front height and a lower height on the rear side of the lower operating arm 223, and the lower inclined hole 2232 coincides with a part of the upper inclined hole 2132.

Please refer to FIG. 2 to FIG. 4. The driving rod 30 is a long rod body extending in the front and rear directions and is slidably formed in the driving rod perforation 14. A rear end of the driving rod 30 is provided with a A driving piece 32, the rear end of the driving piece 32 penetrating backward from the rear end of the outer tube 11 is matched with the position of the driving pin long groove 113, and an inner driving pin length extending in the front-rear direction is provided on the driving piece 32 A groove 321 matches the position of the fixing pin hole 114, and a driving pin 31 is provided with a fixing pin groove 322 extending in the front-rear direction. The fixing pin 115 passes through the front side of the fixing pin groove 322, and the driving The rear end of the sheet 31 is provided with a combined perforation 323. The driving portion 32 can be driven by the driving structure 70 to cause the driving rod 30 as a whole to reciprocate in the front and rear directions. A shaft 31 is provided at the front end of the driving rod 30. The shaft 31 passes through the overlap of the lower inclined hole 2232 and the upper inclined hole 2132. When the driving rod 30 is driven to reciprocate in the front and rear directions, the shaft 31 can be moved along the lower inclined hole. The manner in which 2232 slides with the upper inclined hole 2132 enables the upper jaw 21 and the lower jaw 22 to The rotary shaft 25 is opened or closed operation as a rotation center.

Please refer to FIG. 2, FIG. 3, and FIG. 5 and FIG. 8. The blocking bar 40 is a long piece extending in the front-rear direction and is fixed on the outer side wall of the nail feeding track 15. The front end of the blocking bar 40 extends. Abutting the nail retaining cavity 151, a plurality of blocking elastic pieces 41 are extended into the nail feeding track 15 at an equal interval before and after the blocking rod 40. Each blocking elastic piece 41 is slanted forward by the blocking rod 40. The inwardly extending sheet body extends obliquely forward from the front end of the blocking bar 40 to form a positioning spring piece 42. The front end of the positioning spring piece 42 extends into the nail retention cavity 151. The positioning spring piece 42 and the frontmost stopper The front-to-back distance between the bullet stops 41 is shorter than the front-to-back distance between the two adjacent bullet stops 41.

The nail box 50 is a long rod body extending in the front and rear directions and is arranged on the nail feeding track 15 in a slidable manner. The rear end of the nail box 50 extends into the rear half of the outer tube 11. A driving coupling hole 53 is formed in the rear end of the magazine 50. The front and rear positions of the driving coupling hole 53 are located at the rear of the driving pin long groove 113. A return spring hook is formed in the rear end of the magazine 50. Hole 54. The rear end of the nail feeding track 15 can be driven by the driving structure 70 to reciprocate in the front and rear directions. The nail box 50 is located on the inner side of the blocking bar 40. In the nail-receiving groove 51 extending in the rear direction, the front ends of the plurality of positioning elastic pieces 42 are inserted into the nail-receiving groove 51, and the positions of the plurality of positioning elastic pieces 42 are aligned to the inner surface of the nail-receiving groove 51 at equal intervals before and after. A plurality of pushing elastic pieces 52 are protruded in the nail-receiving groove 51, and each of the pushing elastic pieces 52 is a body extending obliquely forward. In the preferred embodiment, the foremost pushing elastic piece 52 is located at the front end of the nail box 50.

As shown in FIG. 2 and FIG. 7 and FIG. 8, the above-mentioned plastic nails 60 are respectively provided with a pair of clamp arms 61 at the upper and lower positions, the rear ends of each pair of clamp arms 61 are connected, and the front ends of each pair of clamp arms 61 A buckle 62 is formed therebetween, and a lateral columnar positioning rod 63 is formed at the front end of each clamp arm 61. The shape of each positioning rod 63 conforms to the shape of the upper bracket 232 and the lower bracket 242, and each positioning rod 63 It can slide forward along the upper guide track 23 or the lower guide track 24, respectively. A plurality of plastic nails 60 are arranged in the nail groove 51 of the magazine 50 at equal intervals in front and back. The plurality of plastic nails 60 are respectively located between two advancing elastic pieces 52 adjacent to the front and the rear. The rear end of the nail 60 abuts in front of the positioning elastic pieces 42. When the plastic nails 60 are disposed in the nail-receiving groove 51, the height of the plastic nails 60 is limited by the height of the nail-receiving groove 51 and compressed into pairs. The clamp arms 61 are close to each other.

As shown in FIGS. 2 and 9, the driving structure 70 includes a driving ring 71 and a rear end cover 72. The driving ring 71 is sleeved around the outer tube 11 and is located behind the beam tube 13. The driving ring 71 is provided with a driving pin hole 711 laterally, and a driving pin 712 is fixed through the driving pin hole 711. The driving pin 712 passes through the rear end of the driving pin long groove 113 and the inner driving pin long groove 321. A rear end of the rear end and the driving coupling hole 53 are engaged with a return spring 73 between the fixing bolt 115 and the return spring hook hole 54; when the drive ring 71 is driven forward, the magazine 50 can be driven forward and stretched The return spring 73 and the stretched return spring 73 provide the power for the magazine 50 to return backward.

The rear end cap 72 is slidably sleeved on the rear end of the outer tube 11. A coupling pin hole 721 is transversely formed at the rear end of the rear end cap 72, and a coupling pin 722 is fixed in the coupling pin hole 721. The coupling pin 722 passes through the coupling perforation 323 at the rear end of the driving rod 30. A top support spring 74 is provided in the rear end cover 72, and both ends of the top support spring 74 abut against the rear end cover 72. Between the rear end and the rear end of the outer tube 11, when the rear end cover 72 is driven forward, the driving rod 30 can be driven forward and compress the top support spring 74, and the compressed top support spring 74 provides the driving rod 30 rearward reset power.

Please refer to FIG. 1, FIG. 2 and FIG. 14. When the vascular clip applier of the present invention is used, the shaft 10 is mounted on a driver 80, and the driving ring 71 and the driving ring 71 are connected by the structure in the driver 80. The rear cover 72 is used to drive the magazine 50 and the driving rod 30 to reciprocate with the driving ring 71 and the rear cover 72, respectively. When the driving ring 71 controls the driving rod 30 to reciprocate, it drives The mouthpiece 20 is opened or closed. When the rear end cover 72 manipulates the magazine 50 to reciprocate, each plastic nail 60 will be forwarded into the mouthpiece 20 in turn, and the remaining multiple plastic nails 60 will be forwarded simultaneously. Forward, each plastic nail 60 is continuously delivered to the clamping mouth 20 for clamping blood vessels.

When the vascular clip applier of the present invention is used for the first time, please refer to FIG. 8 to FIG. 11. It is necessary to firstly send a plastic nail 60 at the front to the nail indwelling cavity 151 at the front of the nail feeding track 15 for use. As shown in FIG. 9, at this time, the nail box 50 is driven forward by the driving ring 71, and the second pushing elastic piece 52 from the front pushes the front plastic nail 60 forward into the nail retention cavity 151. In the process, the foremost plastic nail 60 will pass the foremost blocking elastic piece 41, and the remaining plastic nails 60 will also pass over the respective foremost blocking elastic piece 41, and then the nail box 50 is driven back to the original Position, the foremost plastic nail 60 is caught by the foremost blocking spring 41 in the process, so the plastic nail 60 left in the nail indwelling cavity 151 will not retreat with the nail box 50, and the remaining plastic nails 60 are in the After moving forward, it will be caught by each of the blocking elastic pieces 41 at the rear and stay in the moved position. When the foremost plastic nail 60 is indwelled in the nail indwelling cavity 151, it will be abutted laterally by the positioning elastic piece 42, so it can be stably positioned in the nail indwelling cavity 151.

When the driving rod 30 is used to drive the front end of the clamping mouth 20 to open, and then the plastic nail 60 is pushed into the clamping mouth 20, the nail box 50 is also driven forward. At this time, the nail box 50 is most forward. The pushing elastic piece 52 will push the plastic nail 60 in the direction of the clamping mouth 20. Please refer to FIG. 12 and FIG. 13. The positioning rods 63 on the upper side and the lower side of the plastic nail 60 will respectively enter the upper side. The rear end of the guide track 23 and the rear end of the lower guide track 24, and the two clamping arms 61 on the upper and lower sides respectively pass through the upper and lower guide rails 23 and the lower guide respectively The narrow entry hole 234 and the lower entry hole 244 of the guide track 24 make the two positioning rods 63 restricted to slide forward in the upper guide track 23 and the lower guide track 24, respectively. When the pushing elastic piece 52 continues to push the plastic nail 60 forward, the two positioning rods 63 of the plastic nail 60 will move along the upper guide track 23 and the lower guide track because the clamping mouth 20 is in an open state. 24 advances and is forced to gradually open, which can prevent the plastic nails 60 from being placed in the nail groove 51 for too long, resulting in elastic fatigue. When leads need not rely on elastic itself open and not make use of the problem.

Finally, the two positioning rods 63 of the plastic nail 60 are respectively moved from the upper inclined section 231 and the lower inclined section 241 to the positions of the upper bracket 232 and the lower bracket 242. At this time, the plastic nail 60 is located at the clamp mouth 20 The inner front end and the two clamping arms 61 are fully open. Then, the driving lever 30 can be operated to drive the upper clamp mouth 21 and the upper clamp mouth 21 to close. The buckle 62 of the clamp mouth 20 can be fastened to two The clamp arm 61 clamps the blood vessel. When the driving lever 30 is operated to open the clamp mouth 20 again, the two positioning levers 63 of the plastic nail 60 will be separated from the upper clamp mouth 21 and the lower lever from the upper exit 233 and the lower exit 243.夹 嘴 22。 The mouth 22.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (5)

A continuous nail-feeding device for a vascular clip applier, comprising: A shaft, the inside of the shaft forms a nail-entry track extending in the front and rear directions, and a nail retention cavity is formed at the front end of the nail-entry track; A blocking lever is fixed on a side wall of the nail-intake track. A plurality of blocking elastic pieces are extended into the nail-injecting track in an equal interval before and after the blocking lever. A positioning spring is extended on the front side of the frontmost blocking spring, the front end of the positioning spring extends into the nail retention cavity, and the front-to-back distance between the positioning spring and the front blocking spring is shorter than two adjacent blocks. Back and forth distance between the bullets; A nail box is a long rod body extending in the front and rear directions and slidably penetrates the nail feeding track. A nail placing groove extending in the front and rear directions is formed in the nail box. The elastic pieces extend into the nail-setting groove, and in accordance with the positions of the plurality of positioning elastic pieces, a plurality of pushing elastic pieces are extended into the nail-setting groove at an equal interval in front of and behind the inner surface of the nail fixing groove, and the front-most pushing elastic piece Located at the front of the magazine; A plurality of plastic nails are slidably embedded in the nail-receiving groove, each plastic nail is respectively located between two advancing elastic pieces adjacent to the front and rear, and the rear end of each plastic nail abuts in front of each positioning elastic piece; and A clamping mouth is coupled to the front end of the shaft and includes an upper jaw and a lower jaw. The clamping mouth is driven to open or close the upper jaw and the lower jaw, and forms a guide track on the upper jaw. The upper guide The front end of the guide track is connected to an upper bracket, the rear end of the upper guide track communicates with the nail retention cavity, and a lower guide track is formed in the lower jaw, and the lower guide track is connected to a lower bracket and the lower guide The rear end of the track communicates with the nail retention cavity. The continuous nail-feeding device for a vascular clip applier according to claim 1, wherein a clamping jaw base is provided at the front end of the shaft, and the clamping mouth is pivotally connected to the front end of the clamping jaw base, The nail-feeding track runs through the jaw base, corresponding to the position of the nail indwelling cavity, and a recess is formed at a side in front of the jaw base, and the nail indwelling cavity is located at the position of the notch; One side of the upper jaw extends rearward to form an upper cover, the upper cover is a shell and covers the upper half of the outer side of the nail indwelling cavity, and a lower cover is extended rearwardly on one side of the lower jaw, and the lower The cover is the housing and covers the lower half of the outside of the nail retention cavity. The continuous nail-feeding device for a vascular clip applier according to claim 2, wherein: the bottom edge of the upper cover is arc-shaped and recessed inwardly in the middle to form a top-view window; The top edge of the cover is curved and recessed inward in the middle to form a lower viewing window. The continuous nail feeding device for a vascular clip applier according to claim 2 or 3, wherein the shaft further comprises an outer tube and a bundle of sleeves, and the outer tube includes two left and right halves. A combined half-shell, the front end of which half of the shell is protruded from the front end of the other half-shell, and a rear hook is formed at the front of the half-shell that protrudes forward; matching the shape of the rear hook, A rear hook is formed at the rear end of the clamp base, and the front hook is engaged with the rear hook so that the clamp base is connected to the front end of the outer tube, and the bundle sleeve is sleeved on the front hook and the Position around the rear hook. The continuous nail-feeding device for a vascular clip applier according to claim 1, wherein a long groove of a driving pin extending in the front-rear direction is transversely penetrated in the rear half of the shaft, and is rearward of the shaft. An end is pivotally provided with a fixed bolt; a driving rod is inserted in the shaft, and the front end of the driving rod is connected to drive the clamping mouth to open or close the upper jaw and the lower jaw. The rear end of the driving rod extends from the rear end of the shaft and is provided with a combined perforation, and a driving combination hole is provided at the rear end of the magazine; a driving ring is sleeved around the shaft and the driving The ring is pivotally provided with a driving pin, the driving pin passes through the rear end of the long slot of the driving pin and the driving coupling hole, and a return spring is combined between the fixed pin and the magazine; at the rear end of the outer tube A sliding cover covers a rear end cover, and a combination latch is pivoted laterally at the rear end of the rear end cover. The combination latch passes through the combination perforation of the driving rod, and a top support spring is provided in the rear end cover. Both ends of the push-up spring abut against the rear end in the rear end cover And between the rear ends of the outer tubes.

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