TWI679001B - Clip assembly for surgical clip - Google Patents

Abstract

A clamping device of a vascular clip applier is provided with a shaft. A clamping mouth is provided at the front end of the shaft. The clamping mouth is driven to open or close the upper jaw and the lower jaw, and the inner side of the upper jaw and the lower jaw. A guide track is formed respectively, and the rear ends of the two guide tracks are connected to the nail-feeding track in the shaft, and a through hole is formed on the inner side of the two guide tracks, and the left and right widths of the through holes are narrower than the guide tracks. Width, an exit is formed at the front end of each guide track; when the plastic nails installed in the shaft are driven forward into the clamp mouth, the two positioning rods using the plastic nails are respectively restricted The way of sliding in each guide track ensures that the plastic nail can be opened with the opening of the clamping mouth, and prevents the plastic nail from falling off from the clamping mouth, which has a better use effect.

Description

Clamping device of vascular clip applier

The invention relates to a structure of a surgical instrument, and in particular, to a clamping device of a blood vessel clip applier for guiding a plastic nail with a track in a clamping mouth.

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. When applying the clamp, the plastic nail is pushed forward from the front to the front end of the mouth of the clamp. During the process, the two positioning rods of the plastic nail will slide forward along the inside of the mouth of the clamp. When the mouth is open, the plastic nails in the mouth can only be opened by its own elasticity. When the plastic nails are fatigued due to long-term storage, the problem of insufficient opening of the plastic nails in the mouth may occur. As a result, the plastic nails fall out of the clamping mouth and cannot be used.

Because the plastic nail of the existing vascular clip applying device can only be opened by its own elasticity when it is arranged in the mouth of the clamp, the problem that the plastic nail may fall off the mouth of the clamp and become unusable. For this reason, the present invention forms a guiding structure in the clamping mouth of the vascular clip applier, and achieves the effect of ensuring that each plastic nail can be opened together with the clamping mouth in the clamping mouth.

In order to achieve the above object, the present invention provides a clamping device of a vascular clip applier, which includes a shaft and a clamping mouth coupled to the front end of the shaft, wherein the inside of the shaft forms a nail extending in the front-back direction Orbit; the jaw includes an upper jaw and a lower jaw each provided at upper and lower positions, the jaw is driven to open or close the upper jaw and the lower jaw, and forms a forward and rearward extension inside the upper jaw An upper guide track, the rear end of the upper guide track communicates with the front end of the nail feeding track, a bottom bracket is recessed at the front end of the upper jaw to form an upper bracket, and the upper bracket communicates with the upper guide track Below the upper guide rail is formed an upper pass-through exit extending in the front and rear directions. The left and right widths of the upper pass exit are narrower than the left and right widths of the upper guide rail. The upper bracket and the nail-feeding track communicate with each other; a lower guide track extending in the front and rear directions is formed inside the lower jaw, and the rear end of the lower guide track communicates with the nail-feeding track, and the The top surface is recessed to form a lower bracket The lower bracket is in communication with the front end of the lower guide rail, and a lower through-hole extending in the front and rear directions is formed above the lower guide rail. The left and right widths of the lower through-hole are narrower than those of the lower guide rail. The left and right widths, and the front and rear ends of the lower penetration exit are in communication with the lower bracket and the nail feeding track, respectively.

Further, in the present invention, two upper jaw sidewalls are formed on the left and right sides of the upper jaw, and upper and lower positions on the opposite sides of the two upper jaw sidewalls are inwardly protruded to form an upper jaw ridge extending in the front and rear directions. The upper guide track is formed between the two upper jaw sidewalls and the two upper jaw ridges, and an upper mold release slot extending in the front and rear directions is formed above the upper guide track; Two side walls of the lower jaw are formed on the right sides, and the upper and lower positions of the opposite sides of the two side walls of the lower jaw project inwardly to form a front and a back. The lower jaw ridges extending in the direction, the lower guide track is formed between the side walls of the two lower jaws and the two lower jaw ridges, and a lower release long hole extending in the front and rear directions is formed below the lower guide track.

Further, the present invention forms a downwardly inclined upper inclined section at a front end portion of the upper guide rail, and the upper outlet is formed at a front end of the upper inclined section; and is formed at a front end portion of the lower guide rail. A downwardly inclined section inclined upward, the lower outlet is formed at the front end of the downwardly inclined section.

Furthermore, the present invention is provided with a gripper seat at the front end of the shaft, and a cutout is formed on one side of the front end of the gripper seat, corresponding to the left and right sides of the cutout, along the front end of the gripper seat. A shaft hole is formed laterally, and a driving rod perforation extending in the front-rear direction is formed on one side of the inside of the shaft. The front end of the driving rod perforation communicates with the slit. A driving rod is inserted through the driving rod perforation. The front end of the upper part extends against the section and is provided with a shaft. The front end of the nail-feeding track runs through the other side of the jaw base. An upper operating arm is formed on one side of the upper jaw and extends backward. The operation arm extends into the section, and an upper shaft hole is penetrated on the front side of the upper operation arm, the upper shaft hole coincides with the shaft hole, and an oblique upward inclined hole is formed on the rear side of the upper operation arm; A lower operating arm is formed by extending backward on one side of the lower jaw, the lower operating arm extends into the section and overlaps the upper operating arm, and a lower shaft hole is penetrated on the front side of the lower operating arm, and the lower shaft hole Coincides with the upper shaft hole, a shaft is inserted and fixed in the shaft hole, and the shaft pivots through the lower shaft hole The shaft hole at the rear side of the operating arm of the inclined hole provided through a diagonal direction, the shaft of the drive rod passes through the front end of the lower inclined hole coincides with the upper of the inclined hole.

Further, the present invention corresponds to the position of the nail-injection track, and the other side in front of the jaw base is recessed backward to form a notch. At the other side of the upper jaw, the upper cover is a casing and covers the upper half of the outside of the notch, and at the other side of the lower jaw, a lower cover is formed to extend backward. The lower cover is the housing and covers the lower half outside the notch.

Preferably, 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.

When the invention is used, it is installed in a blood vessel clip applier, and a plurality of plastic nails are sequentially driven and advanced in a manner arranged in the nail feeding track at intervals. When the clamping mouth at the front end of the shaft is driven to open, and the plastic nail at the foremost end in the nail feeding track is pushed forward, the two positioning rods of the plastic nail will enter the upper guide track and In the lower guide track, the two clamp arms connected to the rear end of the plastic nail pass through the upper and lower penetration holes, respectively, and the plastic nail finally advances into the front end of the clamp mouth, so that the two positioning rods are respectively Positioned on the upper bracket and the lower bracket, at this time, the user can drive the upper jaw and the lower jaw of the clamp mouth to close the plastic nail around the blood vessel, and then open the clamp mouth again to release the plastic nail. The clip mouth.

The effect of the present invention is that, because the left and right widths of the upper and lower exit openings are smaller than the upper and lower guide rails, respectively, the two positioning rods of the plastic nail move along the upper and lower guide rails. When the guide track is advanced, it is restricted to only advance along the upper guide track or the lower guide track and cannot be disengaged inward. Therefore, when the upper jaw is opened with the lower jaw, the plastic nail will be in the process of advancing in the jaw. With the opening of the clamping mouth being forced to open, it can be ensured that the plastic nail must be in an open and usable state when it reaches the front end of the clamping mouth, and the plastic nail is not left in the nail feeding track for too long. The effect of fatigue fatigue has a better effect.

10‧‧‧ shaft

11‧‧‧ Outer tube

111‧‧‧half tube shell

112‧‧‧ rear hook

113‧‧‧Long groove of drive pin

114‧‧‧Fixed bolt holes

115‧‧‧ fixed bolt

12‧‧‧ Collet holder

121‧‧‧ front hook

122‧‧‧ Section

123‧‧‧notch

124‧‧‧shaft hole

13‧‧‧ bundle sleeve

14‧‧‧ Drive rod perforation

15‧‧‧Into the nail track

151‧‧‧nail indwelling cavity

20‧‧‧ Grip

21‧‧‧ Upper Clamp

211‧‧‧ palate

2111‧‧‧ Maxillary sidewall

2112‧‧‧ Upper jaw

212‧‧‧Top

2121‧‧‧Top view window

213‧‧‧ Upper operating arm

2131‧‧‧ Upper shaft hole

2132‧‧‧Upward inclined hole

22‧‧‧ Lower jaw

221‧‧‧Jaw

2211‧‧‧Side wall of mandible

2212‧‧‧Jaw projection

222‧‧‧Under cover

2221‧‧‧look down window

223‧‧‧ Lower operating arm

2231‧‧‧Lower shaft hole

2232‧‧‧Lower inclined hole

23‧‧‧ on guide track

231‧‧‧ up slope

232‧‧‧ Upper bracket

233‧‧‧ on exit

234‧‧‧Top exit

235‧‧‧Slotted upper hole

24‧‧‧ lower guide track

241‧‧‧ lower slope

242‧‧‧Lower bracket

Exit 243‧‧‧

244‧‧‧Underneath exit

245‧‧‧Bottom stripping slot

25‧‧‧Shaft

30‧‧‧Drive lever

31‧‧‧ shaft

32‧‧‧Driver

321‧‧‧Long groove of drive pin

322‧‧‧Fixed latch groove

323‧‧‧Combined with perforation

40‧‧‧ Bar

41‧‧‧stop shrapnel

42‧‧‧Positioning shrapnel

50‧‧‧nail magazine

51‧‧‧Chi nail groove

52‧‧‧ Advance shrapnel

53‧‧‧Drive coupling hole

54‧‧‧Reset spring hook hole

60‧‧‧Plastic nails

61‧‧‧clamp arm

62‧‧‧Snap

63‧‧‧Positioning lever

70‧‧‧ Drive Structure

71‧‧‧Drive ring

711‧‧‧Drive pin hole

712‧‧‧Drive Latch

72‧‧‧ rear cover

721‧‧‧ combined with bolt hole

722‧‧‧ combined bolt

73‧‧‧Return spring

74‧‧‧ Top Support Spring

80‧‧‧Driver

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 a partially enlarged exploded view of a preferred embodiment of the present invention.

Fig. 4 is an exploded view of a clamping nozzle of a preferred embodiment of the present invention.

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

Fig. 6 is a cross-sectional view of a collet of a preferred embodiment of the present invention.

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

Fig. 8 is a sectional view of a preferred embodiment of the present invention.

FIG. 9 is another cross-sectional view of the preferred embodiment of the present invention.

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

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. 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 the clamping mouth of the 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 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. 7. The present invention provides a clamping device of a vascular clip applier, which includes a shaft 10 and a clamping mouth 20 pivotally connected to the front end of the outer tube 10. A driving rod 30 inserted in the outer tube 10 to drive the clamping mouth 20 to open or close, a blocking rod 40 fixed in the outer tube 10, and a nail box inserted in the outer tube 10 50. A plurality of plastic nails 60 disposed in the nail box 50, and a driving structure 70, wherein: as shown in FIG. 2 to FIG. 4, the shaft 10 includes an outer tube 11 and a mouthpiece seat 12. And a bundle of sleeves 13, the outer tube 11 is a long tube body extending in the front-rear direction, the outer tube 11 includes two left and right half-shells 111 combined, and the half-shell 111 on the right side The front end protrudes from the front end of the half-shell 111 on the left side, a rear hook 112 is formed at the front end of the half-shell 111 on the right side, and a driving pin long groove 113 extending in the front-back direction is transversely penetrated in the rear half of the outer tube 11. A fixed pin hole 114 is penetrated laterally at the rear end of the outer tube 11, and a fixed pin 115 is fixed through the fixed pin hole 114; the chuck seat 12 is Front, rear rod extending direction of the block, with the shape of the hook 12 after the card 112, the folder nozzle housing A left front protruding hook 121 is formed on the left side of the end, and 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 The sleeve is positioned around the outer tube 11, and the front end of the bundle sleeve 13 extends against the rear end of the mouthpiece holder 12 and is wrapped around the front hook 121 and the rear hook 112 so that the mouthpiece The seat 12 is connected and fixed with the outer tube 11.

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 concave. The shape of the 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. The shaft hole 124 passes through the front end portion of the cutout 122 and the shaft hole 124. The right end of the opening communicates with the notch 123, corresponding to the position of the cutout 122, a driving rod perforation 14 is formed through the left half of the jaw holder 12 and the left side of the outer tube 11 in the front and rear directions. The front end of the rod perforation 14 communicates with the slit 122, and a right-half portion of the mouthpiece holder 12 and a right-hand side in the outer tube 11 pass through in front and rear directions to form a nail-feeding track 15. A nail retention cavity 151 is formed at the front end. For example, the nail retention 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 project inwardly. An upper jaw ridge 2112 extending in the front and rear directions is formed. The distance between the two upper jaw ridges 2112 protruding inward is shorter than the distance between the two upper jaw side walls 2111. The two upper jaw side walls 2111 and the two upper jaw ridges 2112 are formed. An upper guide rail 23 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 portion of the upper guide rail 23 and is inclined downward at the front end of the upper jaw 211. A recess is formed to form a horizontal column-shaped upper bracket 232, the opening of the upper bracket 232 faces downward, and the front end of the upper inclined section 231 forms an upper outlet 233 connected to the upper bracket 232; on the upper guide track 23 An upper pass-through exit 234 extending in the front and rear directions is formed below. The left-right width of the upper pass-through exit 234 is narrower than the left-right width of the upper guide rail 23, and the front and rear ends of the upper pass-through exit 234 are respectively connected with the The upper bracket 232 communicates with the nail-feeding track 15, and an upper mold release slot 235 is formed above the upper guide track 23 and extends along the front and rear directions. 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 has a shape matching the shape of the contour around the mouthpiece seat 12. The upper cover 212 covers the notch 123. That is, the upper half of the nail retention cavity 151 outside, the bottom edge of the upper cover 212 is arc-shaped and recessed inwardly in the middle to form an upper view window 2121.

According to the position of the slit 122, an upper operation arm 213 is formed on the left side of the rear end of the upper jaw 211 to extend backward. The upper operation arm 213 extends into the slit 122, and an upper shaft is horizontally penetrated on the front side of the upper operation arm 213. Hole 2131, the upper shaft hole 2131 coincides with the shaft hole 124 of the chuck seat 12, and an upper oblique hole 2132 is formed in the rear side of the upper operating 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 project inwardly. A jaw ridge 2212 extending in the front and rear directions is formed. The distance between the two jaw ridges 2212 protruding inward is shorter than the distance between the two chin side walls 2211, and is formed between the two chin side walls 2211 and the two chin ridges 2212. A lower guide rail 24 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, the opening of the lower bracket 242 faces upward, and the front end of the lower inclined section 241 forms a lower outlet 243 connected to the lower bracket 242; A lower through hole 244 extending in the front and rear directions is formed above the guide rail 24. The left and right width of the lower through hole 244 is narrower than the left and right width of the lower guide rail 24. The ends communicate with the lower bracket 242 and the nail-feeding track 15 respectively, and a lower demolding long hole 245 extending in the front and rear directions is formed below the lower guide track 24. According to the position of the notch 123, it is formed to extend rearward on the right side of the rear end of the jaw 221 A lower cover 222, which is a housing and shaped to fit the contour of the surrounding of the jaw base 12, the lower cover 222 covers the notch 123, that is, the lower half of the outside of the nail retention cavity 151, the lower cover The top edge of 222 is arc-shaped and recessed inward in the middle to form a lower viewing window 2221.

According to the position of the slit 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 slit 122 and overlaps the upper operating arm 213. At the lower operating arm 223, A front shaft hole 2231 is transversely penetrated on the front side, and 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 hole 2231. And the upper shaft hole 2131, a lower inclined hole 2232 with a front high and a low rear is formed through 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. The rear end of the driving rod 30 is provided. There is a driving piece 32. The rear end of the driving piece 32 penetrates the rear end of the outer tube 11 backwards. According to the position of the driving pin long groove 113, an inner driving pin long groove 321 extending in the front-rear direction is formed in the driving piece 32. According to the position of the fixing pin hole 114, a fixing pin groove 322 extending in the front-rear direction is formed in the driving piece 31. The fixing pin 115 passes through the front side of the fixing pin groove 322, The rear end 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 front end of the driving rod 30 is provided with a shaft 31. The rod 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 used along the lower inclined hole 2232 and the The way in which the upper oblique hole 2132 slides 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. Inwardly extending piece at this stop The front end of 40 extends obliquely forward to form a positioning spring piece 42. The front end of the positioning spring piece 42 extends into the nail retention cavity 151. The front-to-back distance between the positioning spring piece 42 and the frontmost blocking spring piece 41 is shorter than adjacent. The front-to-back distance between the two blocking elastic pieces 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 at the rear end of the magazine 50, and the front and rear positions of the driving coupling hole 53 are located at the rear of the driving pin long groove 113, and a return spring hook hole is formed at the rear end of the magazine 50 54. The rear end of the nail feeding track 15 can be reciprocated in the front and rear directions by the driving structure 70. The nail box 50 is located on the inner side of the blocking bar 40, and a forward and rear direction is formed in the nail box 50. The nail placing grooves 51 extending in the direction, the front ends of the plurality of positioning elastic pieces 42 are inserted into the nail placing grooves 51, and the positions of the plurality of positioning elastic pieces 42 are aligned at an equal interval in front of and behind the inner surface of the nail placing grooves. 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 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 drive A driving pin hole 711 is horizontally penetrated through the movable ring 71, 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 rear end of the inner driving pin long groove 321. And the driving coupling hole 53, a return spring 73 is hooked 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 the return spring is lengthened 73. The elongated return spring 73 provides the power for the magazine 50 to reset 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 back cover 72 manipulates the magazine 50 to reciprocate, each plastic nail 60 is forwarded into the mouthpiece 20 in turn, and the remaining plastic nails 60 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. The first plastic nail 60 needs to be sent to the nail retention cavity 151 at the front end 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 retaining cavity 151. In the process, the first plastic nail 60 will pass the front blocking elastic piece 41, and the remaining plastic nails 60 will also pass the respective front blocking elastic pieces 41, and then the nail box 50 is driven back to the original Location, the first in the process The plastic nail 60 is caught by the front blocking elastic sheet 41, so that the plastic nail 60 left in the nail retaining cavity 151 will not retreat with the nail box 50, and the remaining plastic nails 60 will also be rearward after being advanced. Each of the blocking elastic pieces 41 is stuck and remains at the position after the movement. When the foremost plastic nail 60 is left in the nail retention cavity 151, it will be abutted laterally by the positioning spring 42, so it can be stably positioned in the nail retention cavity 151, and the user can still Through the bottom-view window 2221 and the top-view window 2121, observe whether there is the plastic nail 60 in the nail retention cavity 151, and confirm whether the operation is correct.

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 front of the nail box 50 is 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 upper and lower positioning rods 63 of the plastic nail 60 will enter the upper guide respectively. The rear end of the 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 lower and upper widths of the upper guide track 23 and the lower guide track, respectively. The 24 narrow exit holes 234 and the lower exit holes 244 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 elastic piece 52 continues to push the plastic nail 60 forward, the two positioning rods 63 of the plastic nail 60 will advance along the upper guide track 23 and the lower guide track 24 because the clamping mouth 20 is in an open state. It is forced to gradually open, which can avoid the elastic fatigue of each plastic nail 60 when it is placed in the nail groove 51 for a long time. 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 in the clamp mouth 20 And the two clamping arms 61 are fully open. Then, the driving lever 30 can be operated to drive the upper clamping mouth 21 and the upper clamping mouth 21 to close. The buckle 62 of the clamping mouth 20 can be fastened to the two clamping arms. 61 clamps the blood vessel, and 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 clamp mouth from the upper exit 233 and the lower exit 243. twenty two.

Please refer to FIG. 6. According to the present invention, the two upper jaw ridges 2112 of the upper jaw 21 and the two lower jaw ridges 2212 of the lower jaw 22 are respectively staggered up and down, so as to guide the upper rail 23. Opposite sides of the lower side are provided with the upper exit opening 234 and the upper mold release slot 235, and opposite sides of the lower guide rail 24 are also provided with the lower exit opening 244 and the lower release opening length. The hole 245 enables the upper clamping nozzle 21 and the lower clamping nozzle 22 to be manufactured in a mold casting manner, and the modules can be smoothly released from the mold in two directions.

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.

Claims (6)

A clamping device of a blood vessel clip applier includes a shaft and a clamping mouth coupled to the front end of the shaft, wherein: the inside of the shaft forms a nail-injection track extending in the front-rear direction; and the clamping mouth includes various devices. An upper jaw and a lower jaw at upper and lower positions, the jaw is driven to open or close the upper jaw and the lower jaw, and an upper guide track extending in the front and rear directions is formed inside the upper jaw, and the upper guide The rear end of the guide track communicates with the front end of the nail-injection track, and an under bracket is formed in the bottom surface of the front end of the upper jaw to open downward. The upper bracket communicates with the upper guide track, and guides the upper guide track. An upper pass-through exit extending in the front and rear directions is formed below the left and right sides of the upper pass-through exit, which are narrower than the left-right width of the upper guide track, and the front and rear ends of the upper pass-through exit are respectively connected to the upper bracket. And the nail-feeding track communicates with each other; a lower guide track extending in the front and rear directions is formed inside the lower jaw, the rear end of the lower guide track communicates with the nail-feeding track, and is recessed on the top surface of the front end of the lower jaw Forming a lower bracket with an opening facing upward, which The groove communicates with the front end of the lower guide rail, and a lower through-hole extending in the front and rear directions is formed above the lower guide rail. The left and right width of the lower through-path is narrower than the left and right width of the lower guide rail. In addition, the front and rear ends of the lower penetration exit are in communication with the lower bracket and the nail feeding track, respectively. The jaw device of the vascular clip applier according to claim 1, wherein two upper jaw side walls are formed on the left and right sides of the upper jaw, and the upper and lower positions of the opposite sides of the two upper jaw side walls are projected inwardly to form an edge. The upper jaw ridges extending in the front and rear directions, the upper guide rail is formed between the two upper jaw side walls and the two upper jaw ridges, and an upper demould extending in the front and rear directions is formed above the upper guide rail. Long holes; two lower jaw side walls are formed on the left and right sides of the lower jaw, and upper and lower positions on the opposite sides of the two lower jaw side walls are projected inward to form a lower jaw ridge extending in the front and rear directions; The lower guide rail is formed between the side walls of the two lower jaws and the two lower jaw ridges, and a lower demolding long hole extending in the front and rear directions is formed below the lower guide rail. The jaw device of the vascular clip applier according to claim 2, wherein a downwardly inclined upper inclined section is formed at a front end portion of the upper guide rail, and a front end of the upper inclined section is formed with the upper bracket. A connected upper exit; a downwardly inclined section inclined upward is formed at a front end portion of the lower guide track, and a lower exit connected to the lower bracket is formed at the front end of the lower inclined section. The clamping device of the vascular clip applier according to any one of claims 1 to 3, wherein a front end of the shaft is provided with a clamping base, and a cutout is formed on one side of the front end of the clamping base, corresponding to On the left and right sides of the cutout, an axial hole is formed in the front end portion of the jaw holder in the transverse direction, and a drive rod perforation extending in the front-rear direction is formed on one side of the inside of the shaft. Connected, a driving rod is penetrated through the driving rod, the front end of the driving rod extends against the section and is provided with a shaft, and the front end of the nail-feeding track runs through the other side of the mouthpiece seat; One side of the upper jaw extends rearward to form an upper operating arm, the upper operating arm extends into the section, and an upper shaft hole is penetrated on the front side of the upper operating arm. The upper shaft hole coincides with the shaft hole. An oblique upper oblique hole is penetrated on the rear side of the upper operating arm; a lower operating arm is formed to extend backward on one side of the lower jaw, and the lower operating arm extends into the section and overlaps the upper operating arm. A lower shaft hole is formed on the front side of the lower operating arm, and the lower shaft hole coincides with the upper shaft hole. A rotating shaft is fixed, the rotating shaft pivots through the lower shaft hole and the upper shaft hole, and an oblique down inclined hole is formed on the rear side of the lower operating arm, and the shaft at the front end of the driving rod passes through the lower inclined hole. The overlap with the oblique hole. For example, the gripper device of the vascular clip applier of claim 4, in which the position corresponding to the nail-feeding track is recessed backward on the other side in front of the gripper seat to form a notch, and the front end of the nail-feeding track forms a nail An indwelling cavity, the nail indwelling cavity is located at the position of the notch; an upper cover is extended rearwardly on the other side of the upper jaw, the upper cover is a shell and covers the upper half of the outside of the notch, The other side of the rearward extension forms a lower cover, which is the housing and covers the lower half of the outside of the notch. The mouthpiece device of the vascular clip applier according to claim 5, wherein the bottom edge of the upper cover is arc-shaped and recessed inwardly in the middle to form an upper view window; the top edge of the lower cover is arc-shaped and Concave inward in the middle to form a viewing window.