WO2020034130A1

WO2020034130A1 - Driving device of vascular clip applier

Info

Publication number: WO2020034130A1
Application number: PCT/CN2018/100766
Authority: WO
Inventors: 张国扬; 孙建伟
Original assignee: 台湾先进手术医疗器材股份有限公司
Priority date: 2018-08-16
Filing date: 2018-08-16
Publication date: 2020-02-20

Abstract

Disclosed is a driving device of a vascular clip applier, wherein a fixing head (30) is movably positioned and combined at a front end of an accommodation chamber (12); a placement opening (122) is provided around the accommodation chamber (12), and the fixing head (30) is provided, in an extended manner, with a placement opening cover (34) for covering the placement opening (122); two combination blocks (21, 22) are provided at a front position and a rear position inside the accommodation chamber (12); and a trigger (23) is pivotally connected to the accommodation chamber (12), and a connecting rod assembly (25) is provided between the trigger (23) and the two combination blocks (21, 22). When the driving device is used, an existing clip application unit (40) is inserted into the fixing head (30) for positioning; when the fixing head (30) is positioned and combined at the accommodation chamber (12), a control end of a rear end portion of the clip application unit (40) is combined with the two combination blocks (21, 22); and a user then presses the trigger (23) to control a front end of the clip application unit (40) to perform a clamping action. Since the clip application unit (40) can be repeatedly installed for use, the driving device realizes the function of repeated use thereof.

Description

Driving device of vascular clip applier

Technical field

The invention relates to a structure of a surgical instrument, and in particular, to a driving device of a reusable vascular clip applier.

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 mainly to extend the rod-shaped clip applicator unit of the vascular clip applicator into the human body, and then operate the grip part to drive the clip applier unit to clamp the clamping part at the front end of the clip applier unit The vascular clamps that are sequentially delivered to the inside of the clamping section are pressed against the blood vessels to close the blood vessels.

Existing vascular clip appliers, due to their front-end structure, will extend into the human body during use. In order to avoid blood contamination, general vascular clip appliers are designed as disposable disposable structures, such as Taiwan, China. Patent application No. 104118985 "Automatic clip applier" invention patent application (Publication No. 201642812) is provided with a clip applying unit inside the outer sleeve, and a clamping part is provided at the front end of the clip applying unit to cooperate with the clip. The holding part is provided with a clamping unit for pushing each blood vessel clamp forward, and a first sleeve and a second sleeve are respectively set at the front and rear positions of the rear end portion of the clamping unit, and the first sleeve is used to move forward. The movement of the clamping part will cause the clamping part to be clamped. The first section of the first casing forward process will drive the second casing to move forward, and the second casing will detach from the first casing at the rear section of the first casing forward process. In the state of simultaneous movement of the tube, the second cannula can be moved back by being driven at this time, and the movement of the second cannula forward and backward can drive the clamping unit to advance a blood vessel clamp into the inside of the clamping portion.

The structure of the existing automatic clip applier for driving the clip applying unit is to press the gripping unit to drive the corresponding connecting member through the first and second connecting members to be nested in the first sleeve or The connecting piece of the second sleeve drives the movement of the first sleeve and the second sleeve, and will be discarded as a whole after the automatic clip applier is used. The clip applying unit of the automatic clip applier has a nested and separable structure between the first and second sleeves and the link of the holding unit, that is, the clip applying unit is an independent and detachable unit from the holding unit. Structure, but because the grip unit is fixed to the clip application unit, after each use of the automatic clip applicator, the grip unit must be discarded along with this type of clip application unit structure, making the automatic clip applier The use cost is higher.

Summary of the Invention

Since the existing vascular clip applier is a disposable structure, its holding unit cannot be reused. Therefore, the entire vascular clip applier needs to be discarded after the operation, so the cost is high. For this reason, the present invention designs a driving device capable of repeatedly filling the existing clip applying unit type structure, and achieves the economical effect that the driving device of the vascular clip applier can be reused.

To achieve the above object, the present invention provides a driving device for a vascular clip applier, the structure of which includes:

A driving body includes a receiving compartment, a track space extending in the front-rear direction is formed inside the receiving compartment, and an insertion opening extending in the front-rear direction is formed around the gun body. The front end of the insertion opening is an open end, and a first track and a second track are formed at the front and rear positions of the receiving compartment adjacent to the track space, and a board is opened on the bottom side of the receiving compartment Machine opening

A driving structure is provided with a first coupling block and a second coupling block on each of the first track and the second track; a board machine is provided, and the top of the board machine passes through the board machine opening, and the board machine The top end is pivotally connected to the accommodating cabin, and a link assembly is connected between the board machine and the first and second coupling blocks. When the board machine pivots, the link assembly drives the link assembly. The first combined block and the second combined block perform a first motion and a second motion, respectively; and

A fixed head includes a head and an insertion opening cover extending rearwardly from the head. The fixed head is movably positioned and combined with the front end of the containing compartment, and penetrates through the fixed head in the front-back direction A through hole is communicated with the track space, and a peripheral edge of a rear end of the through hole is enlarged in diameter to form a positioning step portion.

As a further improvement of the present invention, the driving body of the present invention includes a grip, the top end of the grip is connected to the bottom side of the containing compartment, and the top end of the trigger is pivotally connected to the containing compartment. The bottom side of the front end, the top side of the trigger forms a rearwardly extending extension, and the link assembly is disposed between the free end of the extension and the first and second coupling blocks; at the head A front pipe extends forward from the middle in the front, the penetration hole penetrates the front pipe and the head, and a pivoting part extends on the head, and the pivoting part is pivotally connected to the front end of the accommodation cabin. A switch structure is provided between the insertion opening cover and a peripheral edge of the insertion opening.

As a further improvement of the present invention, the present invention abuts a return spring between the trigger and the inside of the driving body, and a front-end steering wheel is sleeved on the front tube, in which An oil seal ring is provided at the front end of the ring, and two elastic buckle points are provided at opposite positions around the rear of the oil seal ring.

As a further improvement of the present invention, the present invention is provided with an outer ball groove on the outer peripheral surface of the front pipe in a surrounding manner, and the directional wheel has a cylindrical structure and passes through one turn at the center position in the front-rear direction. The wheel perforation is fitted around the front tube with the rear end of the runner perforation, corresponding to the position of the outer ball groove. An inner ball groove is provided on the peripheral wall of the rear end of the runner perforation. A ball hole is inserted between the inner ball groove, and a plurality of balls are built into the outer ball groove and the inner ball groove. The inner and outer sides of each ball are respectively located in the outer ball groove and the inner ball groove. A closure is incorporated in the bead placement hole.

As a further improvement of the present invention, in the present invention, an engaging groove is provided around the peripheral wall of the runner perforation, and a key groove is recessed on one side of the peripheral wall of the runner perforation. The key groove is a long groove extending in the front-rear direction. The rear end of the key slot penetrates backward through the periphery of the rear end of the runner perforation, and a front flange is protruded inwardly in a peripheral form at the peripheral edge of the front end of the runner perforation. An elastic component is embedded in the runner perforation. An elastic piece assembly is provided with a ring piece on the peripheral wall of the perforation of the runner. The ring piece is a C-shaped piece body and two key pieces are provided at two free ends. The two key pieces are inserted into the key groove for positioning, and the ring piece is convex toward the periphery. A plurality of engaging pieces are set, and the several engaging pieces are respectively inserted into the engaging grooves for positioning, and the ring pieces are extended in a circumferential and spaced arrangement toward the front, and the top supporting pieces are positioned forward. Between the flange and the front ends of the several top support pieces, two positioning pieces extend forward at opposite positions around the ring piece, and the two elastic buckle points are respectively formed at the free ends of the two positioning pieces.

As a further improvement of the present invention, the link assembly according to the present invention includes two left and right symmetrically arranged first links and two left and right symmetrically arranged second links, and the bottom ends of the two first links are pivotally connected to each other. The free ends of the extensions, the top ends of the two first links extend upwards and forwards, and are respectively pivotally connected to the left and right sides of the first coupling block, and a push is transversely penetrated at the bottom of the second coupling block. The bottom ends of the two second links are pivotally connected to the free ends of the extensions, and the top ends of the two second links extend upward and backward, and are respectively worn in the upper half of the two second links An arc-shaped long hole is provided, and the push rod passes through the two arc-shaped long holes. The first movement is that the trigger is moved to the rear side by pressing and the two first links are moved up. Two first links will push the first combination block to slide forward along the first track, and the second movement is when the second combination block is located at the front end of the second track, and the trigger is affected by During the process of pressing and swinging to the rear side to move the two second links upward, two arc-shaped long holes will move along the pushing rod toward Slip, then the front end edge of the two arc-shaped elongated hole pushes the pushing rod and the second binding block slide rearwardly along the second track.

As a further improvement of the present invention, the switch structure according to the present invention is provided with a dial button on the insertion opening cover, and a buckle is provided at the bottom of the dial button, and the snap hook is used for the insertion. The periphery of the opening is positioned.

As a further improvement of the present invention, the present invention is provided with a button hole in the middle of the insertion opening cover, the button is slidably embedded in the button hole, and a button lock block is provided at the bottom of the button. A button spring is abutted between the front edge of the button hole and the button locking block, and the buttons are located on the left and right sides of the button locking block to match the position of the button. A buckle opening is formed on the left and right sides of the peripheral edge of the insertion opening, and the buckle is fixed on the bottom side of the rear edge of the buckle opening, and an arc shape is formed in the middle of the bottom surface of the button buckle block. Pressed shapes.

As a further improvement of the present invention, the trigger opening of the present invention extends forward to the bottom side of the front end of the receiving compartment, and a bottom hole of the front end of the receiving compartment penetrates a shaft hole of the receiving compartment laterally, A trigger shaft hole is penetrated at the top end of the front side of the trigger, the trigger shaft hole communicates with the housing hole, and the head of the fixing head is in the shape of a cover and fits the accommodation. At the front end of the cabin body, the pivoting portion includes two pivoting arms extending symmetrically downward from the bottom side of the head, and a fixed head shaft hole is horizontally penetrated at the free ends of the two pivoting arms. The hole communicates with the shaft hole of the accommodation cabin, and a front rotation shaft is inserted through the shaft hole of the trigger, the shaft hole of the accommodation cabin, and the shaft hole of the fixed head.

As a further improvement of the present invention, the driving arm according to the present invention includes two left and right symmetrical driving arm side plates, a spring tie rod is inserted and fixed between the two driving arm side plates, and between the free ends of the two driving arm side plates. A pivoting rod is fixed through it, and a pawl block is sleeved on the pivoting rod. A pawl spring is connected between the front end of the pawl block and the spring rod, and a ratchet is formed at the rear end of the pawl block. A claw, in cooperation with the arc-shaped trajectory of the pawl movement, a rack of teeth is fixed in the grip, and a plurality of arc-shaped upward unidirectional ratchet teeth are formed on the front side of the rack of teeth. The top sides of the one-way ratchet teeth respectively form a row of one-way ratchet teeth.

When the present invention is used, the positioning state of the fixing head is released and the position of the fixing head is moved, so that the front end of the containing compartment and the surrounding openings are opened, and then the operation of installing a clamping unit is performed. , Inserting the clamping unit into the penetration hole of the fixing head for positioning, and then repositioning the fixing head to the front end of the accommodating compartment, so that the insertion opening cover is re-closed to the insertion opening, At this time, the rear end of the clip applying unit enters the containing compartment through the insertion opening, so that the first sleeve and the second sleeve of the rear end of the clip applying unit are respectively embedded in the first coupling block and the first sleeve. The two coupling blocks respectively drive the first casing and the second casing to move.

Then press the trigger. The trigger drives the first combination block and the second combination block to perform the first movement and the second movement respectively through the link assembly. The first combination block and the second combination block drive the application unit. The first cannula and the second cannula of the clamping unit act to drive the clamping portion at the front end of the clamping unit to clamp the blood vessel clamp forwardly conveyed. After the clip applying unit is used, the positioning state of the fixing head is released again and the position of the fixing head is moved again, and the used clip applying unit can be withdrawn from the fixing head and discarded, and then the invention is sterilized. Then, another clip applying unit can be installed again to form a vascular clip applier.

The clip applying unit can be repeatedly installed in the present invention, and the clip applying unit can be discarded after surgical use, so that the present invention does not need to be discarded after use, has the characteristics of reusability, is more economical in use, and saves blood vessel clips Cost of the device.

BRIEF DESCRIPTION OF THE DRAWINGS

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

FIG. 2 is a perspective view of the fixing head opened according to a preferred embodiment of the present invention; FIG.

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

4 is an exploded view of the fixing head according to a preferred embodiment of the present invention;

5 is a sectional view of a preferred embodiment of the present invention;

6 is a schematic diagram of an action of installing a clip applying unit according to a preferred embodiment of the present invention;

7 is a partial cross-sectional view of a clip applying unit according to a preferred embodiment of the present invention;

FIG. 8 is a schematic diagram of an action of installing a clip applying unit according to a preferred embodiment of the present invention; FIG.

FIG. 9 is a schematic diagram of an action of installing a clip applying unit according to a preferred embodiment of the present invention.

Symbol Description:

A Left-handle shell B Right-handle shell

10 drive body 11 grip

111 installation space 12 housing compartment

121 track space 122 insertion openings

123Snap button 13 First track

14 second track 15 opening

16 housing shaft holes 20 drive structure

21First combined block 211 First combined block groove

212 First engagement shape 22 Second combination block

221 second combination block groove 222 second engagement shape

223 push rod 23 plate machine

231 trigger shaft hole 232 extension

233 extension side plate 234 spring rod

235 轴接杆 24 tooth rack

241 Upward unidirectional ratchet 242 Downward unidirectional ratchet

25 link assembly 251 first link

2511 Overlay pulley 252 second link

253 arc-shaped long hole 26 pawl block

261 pawl spring 262 pawl

27 return spring 30 fixed head

31 head 311 front tube

312 penetration hole 313 positioning department

314 外滚珠沟 32 pivot joint

321 pivot joint arm 322 fixed head shaft hole

33 forward shaft 34 put the opening cover

341 dial button 342 dial button

343 dial button snap block 344 dial spring

345 buckle 346 pressed shape

35-direction runner 351 runner perforation

352 内滚珠沟 353 bead hole

354 rollers 355 closures

356 snap groove 357 key slot

358 front flange 36 shrapnel assembly

361 ring film 362 key film

363 snap-in film 364 top support film

365 positioning film 366 elastic buckle

37Oil seal ring 40Clamping unit

41 outer tube 42 clamping portion

43 vascular clip 45 positioning hole

46 positioning ring 47 first sleeve

471 First slot 48 Second sleeve

481 Second slot 49 Reset unit

detailed description

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 as shown in FIG. And a fixing head 30 pivotally connected to the front end of the driving body 10, wherein:

As shown in FIG. 1 to FIG. 3, the driving body 10 includes a left handlebar case A and a right handlebar case B. The driving body 10 is a combination of the left handlebar case A and the right handlebar case B. The driving body 10 includes a handle 11 and a receiving compartment 12. A top end of the receiving compartment 12 is connected to a bottom side of a front end of the receiving compartment 12. A device space 111 is formed in the interior, and the accommodating compartment 12 is a shell extending in the front-rear direction. A track space 121 extending in the front-rear direction is formed in the interior of the accommodating compartment 12, and the track space 121 and the device space 111 communicates with each other, and an insertion opening 122 extending in the front-rear direction is formed on the top of the accommodating compartment 12. A snap opening 123 is formed symmetrically on the left and right sides of the periphery of the insertion opening 122, and the track space 121 A front end of the insertion opening 122 is an open end, and a first track 13 and a second track 14 are formed in the accommodation compartment 12 adjacent to the front and rear positions of the track space 121. The first track 13 and the second track 14 are both tracks extending in the front-rear direction, and the front side of the top of the grip 11 and the second track 14 A trigger opening 15 is provided between the bottom sides of the receiving compartment 12, and the trigger opening 15 extends forward to the bottom side of the front end of the receiving compartment 12 and penetrates laterally on the bottom side of the front end of the receiving compartment 12. One accommodation cabin shaft hole 16.

As shown in FIGS. 2 to 3 and FIG. 5, the driving structure 20 includes a first coupling block 21, a second coupling block 22, a plate machine 23, a rack rack 24, and a plate machine 23 and the The connecting rod assembly 25 between the first coupling block 21 and the second coupling block 22, the first coupling block 21 and the second coupling block 22 are slidably disposed on the first rail 13 and the second rail 14, respectively. A first coupling block groove 211 having a top opening is formed in the middle of the first coupling block 21, and a first engaging shape 212 protruding into the first coupling block groove 211 is formed in the first coupling block 21. The joint shape 212 is formed in the middle of the first coupling block groove 211, a second coupling block groove 221 with an open top is formed in the middle of the second coupling block 22, and a second coupling block groove is formed in the second coupling block 22 A second engaging shape 222 protruding in 221 is located at the front side of the second coupling block groove 221, and a push rod 223 is inserted through the bottom of the second coupling block 22 laterally. In a preferred embodiment, rivets are selected as the push rod 223, and the left and right ends of the push rod 223 protrude from the second coupling block 22.

The top of the trigger 23 passes through the opening 15 of the trigger, the top of the front side of the trigger 23 is located in the bottom side of the front end of the accommodation compartment 12, and a trigger shaft hole is passed through the top of the trigger 23 231, the trigger shaft hole 231 communicates with the accommodation cabin body shaft hole 16 in a left-right alignment, and the trigger 23 is pivotally connected to the front end at the bottom side of the front end of the accommodation cabin 12, in which the detailed pivot structure It will be described later. An extension portion 232 extends rearward from the top of the trigger 23, and the extension portion 232 includes two left and right symmetrical extension side plates 233. A spring tie rod 234 is fixed between the two extension side plates 233. A pivot rod 235 is fixed between the free ends of the side plates 233. In the preferred embodiment, rivets are used as the spring rod 234 and the pivot rod 235.

A pawl block 26 is sleeved on the pivot rod 235 in a rotatable form. A pawl spring 261 is connected between the front end of the pawl block 26 and the spring tie bar 234. At the rear end of the pawl block 26 A pawl 262 is formed, and the rack rack 24 is fixed in the device space 111 of the grip 11, and the position of the front side of the rack rack 24 is located on the arc track of the pawl 262 movement. The front side of the frame 24 is formed with a plurality of upward unidirectional ratchet teeth 241 arranged in an arc, and a row of unidirectional ratchet teeth 242 is formed on the top side of each of the plurality of upward unidirectional ratchet teeth 241, respectively. The upward unidirectional ratchet teeth 241 or a plurality of downward unidirectional ratchet teeth 242 enables the board machine 23 to set multiple upward unidirectional ratchet teeth 241 or multiple downward unidirectional ratchet teeth 242 on the rack 24. Within the swinging range, it can only move unidirectionally whether it is pressed backwards to swing or return to its original position; a return spring 27 is set abutting between the board machine 23 and the inside of the drive body 10, and when the board After the machine 23 is pressed backward by the user and swung back, as long as the plate machine 23 is released, the return spring 27 can use the elastic restoring force to the plate machine 2 3 is pushed forward to the original position. In the preferred embodiment, a torsion spring is selected as the return spring 27.

The link assembly 25 includes two left and right symmetrical first links 251 and two left and right symmetrical second links 252. The bottom ends of the two first links 251 are pivotally connected to the pivots at the free ends of the extensions 232, respectively. Extension rods 235, the top ends of the two first connecting rods 251 extend upward and forward, and are respectively pivotally connected to the left and right sides of the first connecting block 21, and between the first connecting rods 251 and the first connecting block 21 The pivot joints are combined with one overlying pulley 2511 in a coaxial manner, and the two overlying pulleys 2511 are slidably disposed on the first track 13. The first combination block 21 can be further adjusted on the first track 13 through the two overlying pulleys 2511. Sliding smoothly, the bottom ends of the two second links 252 are pivotally connected to the pivot rods 235 at the free ends of the extensions 232, and the top ends of the two second links 252 extend upward and rearward. The upper half of the second link 252 is respectively provided with an arc-shaped long hole 253, and two arc-shaped long holes 253 are sleeved on the left and right ends of the push rod 223. When the trigger 23 is pressed to swing backward, The link assembly 25 drives the first combined block 21 and the second combined block 22 to perform a first motion and a second motion, respectively.

The first movement is when the trigger 23 is pressed to swing to the rear side, during the process of moving the two first links 251 up, the two first links 251 will push the first coupling block 21 along the The first track 13 slides forward, and the second movement is when the second coupling block 22 is located at the front end of the second track 14 and the trigger 23 is pressed to swing to the rear side to connect the two second links. During the upward movement of 252, the two arc-shaped long holes 253 slide backward along the pushing rod 223, and then the front edges of the two arc-shaped long holes 253 abut against the two ends of the pushing rod 223, and push The pushing rod 223 and the second coupling block 22 slide backward along the second rail 14.

As shown in FIG. 2 to FIG. 4, the fixing head 30 is provided with a head 31. The head 31 is in the shape of a cover opening rearward and is sleeved on the front end of the accommodation compartment 12 in front of the head 31. A front tube 311 extends forward from the middle of the front tube. A penetrating hole 312 is penetrated in the front and rear directions of the head tube 311 and the head 31 in the front-back direction. The rear end of the penetrating hole 312 communicates with the track space 121. The peripheral edge of the rear end of the entry hole 312 is enlarged in diameter to form a positioning step portion 313. An outer ball groove 314 is provided on the outer peripheral surface of the front tube 311 in a circular manner, and a pivot portion 32 extends downward from the bottom side of the head portion 31 The pivot joint portion 32 includes two pivot arms 321 extending symmetrically downward from the bottom side of the head 31, and a fixed head shaft hole 322 is horizontally penetrated at the free ends of the two pivot arms 321. 322 is aligned with the accommodation chamber shaft hole 16 to the left and right to communicate with each other. The trigger shaft hole 231, the accommodation chamber shaft hole 16 and the fixed head shaft hole 322 are inserted and combined with a front shaft 33. This preferred embodiment The combination of a flat head screw and a flat head nut is used as the front rotating shaft 33, so that the top end of the trigger 23 is pivotally connected to the receiving compartment 12 The bottom side of the front end; the above-mentioned return spring 27 is sleeved on the front rotating shaft 33 and abuts against the inside of the plate machine 23 and the driving body 10 with two ends respectively.

On the top side of the head 31, an insertion opening cover 34 is extended rearward. The insertion opening cover 34 closes the insertion opening 122 on the top of the accommodation compartment 12, and is inserted in the middle of the insertion opening cover 34. A button hole 341 is a long hole extending in the front-rear direction. A button 342 is slidably embedded in the button hole 341. A button locking block 343 is provided at the bottom of the button 342. A button spring 344 is provided between the front edge of the button hole 341 and the button latching block 343 to match the position of the button opening 123 of the receiving compartment 12 described above. A buckle 345 is provided on the left and right sides of the buckle block 343, and the buckle 345 is engaged with the bottom side of the rear edge of the buckle opening 123 and fixed. In the switch structure, an arc-shaped pressing shape 346 is formed in the middle of the bottom surface of the button-locking block 343.

A directional wheel 35 is sleeved on the front pipe 311. The directional wheel 35 is a cylindrical structure that runs through a wheel perforation 351 in the direction of the axial center. The rear end of the wheel perforation 351 is sleeved on The periphery of the front pipe 311 corresponds to the position of the outer ball groove 314. An inner ball groove 352 is provided on the peripheral wall of the rear end of the runner perforation 351. The outer peripheral surface of the runner 35 in the direction penetrates the inner ball groove 352. A ball hole 353 is formed with a plurality of balls 354 built into the outer ball groove 314 and the inner ball groove 352. The inner and outer sides of each ball 354 are respectively located in the outer ball groove 314 and the inner ball groove 352. A closing member 355 is combined with the bead placement hole 353 to prevent multiple balls 354 from falling out from the bead placement hole 353. In the preferred embodiment, the bead placement hole 353 is a screw hole and the closure Piece 355 is a screw. An engaging groove 356 is provided around the peripheral wall of the runner perforation 351, and a key groove 357 is recessed on one side of the peripheral wall of the runner perforation 351. The key groove 357 is a long groove extending in the front-rear direction and the rear end penetrates through. A peripheral edge of the rear end of the runner perforation 351 is provided with a front flange 358 protruding inwardly from a peripheral edge of the front end of the runner perforation 351.

A spring piece assembly 36 is embedded in the runner perforation 351 of the runner 35 in the direction. The spring piece assembly 36 is provided with a ring piece 361 on the peripheral wall of the runner perforation 351. The ring piece 361 is a C-shaped piece and Two key pieces 362 are provided at the two free ends, and the two key pieces 362 are inserted into the key groove 357 for positioning, and the rotation position of the elastic piece assembly 36 is fixed; on the ring piece 361, a plurality of engaging pieces 363 and a plurality of cards are protruded toward the periphery. Closing pieces 363 are respectively inserted into the engaging grooves 356 for positioning, and the elastic piece assembly 36 is fixed in the front-rear position. A plurality of top supporting pieces 364 and a plurality of top supporting pieces are extended forward in a circular and spaced arrangement on the ring piece 361. 364 are elongated sheet pieces extending forward respectively. An oil seal ring 37 is positioned between the front flange 358 and the front ends of the several top support pieces 364, and two positions are extended forward at opposite positions around the ring piece 361. The free ends of the two positioning pieces 365 extend into the runner perforations 351 respectively, and two elastic buckle points 366 are formed at the free ends of the two positioning pieces 365.

As shown in FIG. 6, when the preferred embodiment of the present invention is used, it is used in conjunction with an existing clip applying unit 40. An outer sleeve 41 is fixed around the clip applying unit 40, and a front end of the clip applying unit 40 is provided. A clamping portion 42 is provided in cooperation with the clamping portion 42 and is provided with a blood vessel clip 43 which is sequentially conveyed forward from the inside of the clip applying unit 40. Positioning holes 45 are respectively formed on the left and right sides of the rear end portion of the outer sleeve 41 A positioning ring 46 protruding toward the periphery is provided at the rear end of the outer sleeve 41, and the front and rear positions of the rear end of the outer sleeve 41 of the clip applying unit 40 are slidably sleeved. A first sleeve 47 and a second sleeve 48 are provided. A first insertion groove 471 is provided around the middle of the first sleeve, and a second insertion groove 481 is provided around the middle of the second sleeve 48.

The forward movement of the first sleeve 47 can drive the clamping portion 42 to be clamped. The first stage of the forward movement of the first sleeve 47 will drive the second sleeve 48 to move forward together. The second sleeve 48 will be released from the state of co-movement with the first sleeve 47 at the later stage of the forward movement of the first sleeve 47. At this time, the second sleeve 48 can be driven to move backward. The movement once can bring the blood vessel clamp 43 into the inside of the clamping portion 42 for use. A rear end of the clamp applying unit 40 is provided with a first sleeve 47 and a second sleeve 48 which return to their original positions. RESET UNIT 49.

When the present invention is used with the clip applying unit 40, as shown in Figs. 2 and 6, first push the knob 342 of the fixed head 30 forward, so that the buckle 345 at the bottom of the knob 342 moves forward. At the position of the buckle opening 123, the front head 33 is used as the axis of rotation to turn the fixing head 30 forward. At this time, the insertion opening cover 34 of the fixing head 30 leaves and closes the position. The position of the insertion opening 122 makes the insertion opening 122 open.

Next, the user holds the grip 11 of the driving body 10 with one hand, takes the clip applying unit 40 with the other hand, and inserts the front end of the clip applying unit 40 obliquely downward into the penetration hole 312 of the fixing head 30 and The oil seal ring 37 is positioned until the positioning ring 46 of the clip applying unit 40 abuts against the positioning step portion 313 in the fixing head 30, so that the operation of inserting the clip applying unit 40 obliquely downward into the penetration hole 312 is performed. Very handy. After the clip applying unit 40 is inserted into the penetrating hole 312 for positioning, two elastic buckle points 366 are inserted into the two positioning holes 45 of the clip applying unit 40 and fixed, so that the direction wheel 35 is combined with the clip applying unit 40. When the user rotates When the direction wheel 35 is rotated, the clamping unit 40 can be driven to rotate together, and the angle of the clamping portion 42 at the front end of the clamping unit 40 can be adjusted.

After the clip applying unit 40 is inserted into the penetration hole 312 of the fixing head 30 and positioned, the user turns the fixing head 30 backward to cover the insertion opening cover 34 on the insertion opening 122 backward, and The buckle 345 at the bottom of the dial 342 is hooked to the bottom edge of the rear side of the buckle opening 123 again, and the position of the fixing head 30 and the driving body 10 is fixed. During the process of turning the fixing head 30 back, the rear end portion of the clip applying unit 40 will enter the receiving compartment 12 downward through the insertion opening 122 on the top of the receiving compartment 12, so that the clip applying unit The first sleeve 47 of 40 is embedded in the first combination block groove 211 of the first combination block 21, and the second sleeve 48 is embedded in the second combination block groove 221 of the second combination block 22. At this time, the first The first engaging shape 212 of the coupling block 21 is fitted in the first recess 471 of the first sleeve 47, and the second engaging shape 222 of the second coupling block 22 extends into the second of the second sleeve 48. The front side of the slot 481.

According to the present invention, in the process of clamping the blood vessel clip 43 by the clamping portion 42 at the front end of the clip applying unit 40, the handle 11 is held by the hand and the trigger 23 is pressed to swing backward. The process of pressing the board machine 23 backward is divided into front and back stages. The process of pressing the front stage of the board machine 23 is shown in FIG. 7 and FIG. 8. In the process, the first link 251 moves upward and drives the first The combination block 21 and the first sleeve 47 slide forward, and at the same time, the second link 252 also moves upward. During the process of the second link 252 moving upward, the arc-shaped long hole 253 of the second link 252 Will slide backward along the push rod 223. When the first sleeve 47 moves forward, it will drive the second sleeve 48 to move forward, so that the second sleeve 48 moves forward to the rear edge of the second slot 481 and abuts forward. The position of the second engaging shape 222.

Please refer to FIG. 8 for the process of pressing the rear section of the trigger 23. When the second sleeve 48 moves to the rear edge of the second slot 481 and presses forward to the position of the second engaging shape 222. , The arc-shaped long hole 253 of the second link 252 is also moved to a position where the front edge abuts against the pushing rod 223, at this time the second sleeve 48 reaches a state where it is released from the same movement as the first sleeve 47 As shown in FIG. 9, the pressing of the trigger 23 further causes the first link 251 to continue to move upward, driving the first combination block 21 and the first sleeve 47 to continue to slide forward, and the second link 252 also moves upward, pushing the pushing rod 223 and the second sleeve 48 backward with the front edge of the arc-shaped long hole 253.

The entire operation process of pressing the trigger 23 can drive the first sleeve 47 of the clamping unit 40 to move forward, and cause the second sleeve 48 to move backward after moving forward, so that the present invention can The clamping portion 42 driving the clamping unit 40 clamps the blood vessel clamp 43 conveyed forward. When the trigger 23 is released, since the clamping unit 40 is provided with a reset unit 49 at the rear end that pulls the first sleeve 47 back to reset, the reset spring 27 will push the trigger 23 back to the original position. In addition to the position, using the movement of the first sleeve 47 to return to the original position backward, the plate machine 23 can also be moved forward to return to the original position through the first link 251.

After installing the clip applying unit 40 according to the present invention, when removing the clip applying unit 40, the push button 342 is pushed forward and the fixing head 30 is turned forward, as shown in FIG. 6, and then the The used clip applying unit 40 is drawn upward obliquely. During the process of drawing out the clip applying unit 40, the oil seal ring 37 in the front end of the direction wheel 35 will scrape off the blood and water contaminated around the clip applying unit 40. Since the present invention can repeatedly install the clip applying unit 40 to be used as a vascular clip applier, it is only necessary to discard the clip applying unit 40 after surgical use, and then the present invention can be repeatedly sterilized with a medicinal solution or high temperature, and then repeatedly install a new one. The clip applying unit 40 is used, so that the present invention does not need to be discarded after use, and has a more economical use effect.

In addition to the above-mentioned preferred embodiment, the switch structure for fixing the fixing head 30 and the accommodating compartment 12 of the present invention is to set the dial button 342 at the position where the opening cover 34 is inserted. The structure of the button 342 is provided on the top of the receiving compartment 12, and the toggle button 342 is engaged with the top edge of the insertion opening cover 34 as a switch structure for fixing the fixing head 30 and the receiving compartment 12. In addition to the shape of the head 31 of the fixing head 30 of the present invention, in addition to the shape of the cover body covering the front end of the accommodation compartment 12, the head 31 may also be a block and located in the accommodation compartment 12. front end.

In addition to the above-mentioned preferred embodiments of the present invention, in addition to the fixing head 30 being pivotally connected to the driving body 10, the fixing head 30 may also be mounted on the front side of the driving body 10 by a detachable concave-convex engaging structure, and become The fixing head 30 is movably positioned and coupled to the structure of the driving body 10. When the front end of the track space 121 and the insertion opening 122 need to be opened, the positioning state of the fixing head 30 is released and the positioning head 30 is moved, and the clamping unit 40 can be inserted and set at the fixing head 30. The operation of installing into the driving body 10 or the operation of removing and replacing the clamping unit 40 installed in the positioning head 30 and the driving body 10 is performed.

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

A driving device for a vascular clip applier, comprising:

A driving body includes a receiving compartment, a track space extending in the front-rear direction is formed inside the receiving compartment, and an insertion opening extending in the front-rear direction is formed around the gun body. The front end of the insertion opening is an open end, and a first track and a second track are formed at the front and rear positions of the receiving compartment adjacent to the track space, and a board is opened on the bottom side of the receiving compartment. Machine opening

A driving structure is provided with a first coupling block and a second coupling block on each of the first track and the second track; a board machine is provided, and the top of the board machine passes through the board machine opening, and the board machine The top end is pivotally connected to the accommodating cabin, and a link assembly is connected between the board machine and the first and second coupling blocks. When the board machine pivots, the link assembly drives the link assembly. The first combined block and the second combined block perform a first motion and a second motion, respectively; and

A fixed head includes a head and an insertion opening cover extending rearwardly from the head. The fixed head is movably positioned and combined with the front end of the containing compartment, and penetrates through the fixed head in the front-rear direction. A through hole is communicated with the track space, and a peripheral edge of a rear end of the through hole is enlarged in diameter to form a positioning step portion.
The driving device of the vascular clip applier according to claim 1, wherein the driving body comprises a grip, and a top end of the grip is connected to a bottom side of the containing compartment, and the trigger The top end is pivotally connected to the bottom side of the front end of the containing compartment. The top side of the trigger forms a rearwardly extending extension, and the link assembly is provided at the free end of the extension and is combined with the first and second ends. Between the blocks; a front tube extends forward in the middle of the front of the head, the penetration hole penetrates the front tube and the head, and a pivot portion is extended on the head to use the pivot portion It is pivotally connected to the front end of the accommodating cabin, and a switch structure is provided between the insertion opening cover and a peripheral edge of the insertion opening.
The driving device for a vascular clip applier according to claim 2, wherein a reset spring is abutted between the trigger and the inside of the driving body, and a sleeve is connected to the front tube. A directional wheel, an oil seal ring is set at the front end of the directional wheel, and two elastic buckle points are provided at opposite positions around the rear of the oil seal ring.
The driving device for a vascular clip applier according to claim 3, wherein an outer ball groove is provided on the outer peripheral surface of the front tube in a circumferential manner, and the direction wheel has a cylindrical structure and At the center position, a runner perforation is penetrated in the front-rear direction, and the rear end of the runner perforation is fitted around the front tube, corresponding to the position of the outer ball groove. An inner ball is provided on the peripheral wall of the rear end of the runner perforation. A groove is inserted between the outer peripheral surface of the roller in the direction and the inner ball groove, and a plurality of balls are built in the outer ball groove and the inner ball groove. The inner and outer sides of each ball are respectively located on the outer side. In the ball groove and the inner ball groove, a closing member is combined in the bead placement hole.
The driving device of the vascular clip applier according to claim 4, wherein an engaging groove is provided around the peripheral wall of the runner perforation, and a key groove is recessed on one side of the peripheral wall of the runner perforation, and The key slot is a long slot extending in the front-rear direction. The rear end of the key slot penetrates the peripheral edge of the rear end of the runner perforation backward. A front flange is protruded inwardly in a circumferential manner at the peripheral edge of the front end of the rotary perforation. An elastic piece assembly is embedded in the wheel perforation. The elastic piece assembly is provided with a ring piece on the peripheral wall of the runner perforation. The ring piece is a C-shaped piece body and two key pieces are provided at the two free ends. The two key pieces are inserted into the For key slot positioning, a plurality of engaging pieces are protruded around the ring piece, and a plurality of engaging pieces are respectively inserted into the engaging groove for positioning, and a plurality of top supporting pieces are extended forward in a circular and spaced arrangement on the ring piece. The oil seal ring is positioned between the front flange and the front ends of several top support pieces, and two positioning pieces are extended forward at opposite positions around the ring piece, and the two elastic buckle points are respectively formed on the two positioning pieces. Free end.
The driving device for a vascular clip applier according to any one of claims 2 to 5, wherein the link assembly includes two first links that are symmetrically arranged left and right and two second links that are symmetrically arranged left and right. The bottom ends of the two first links are pivotally connected to the free ends of the extensions, and the top ends of the two first links extend upward and forward, and are respectively pivoted to the left and right sides of the first coupling block. On the side, a push rod is transversely penetrated at the bottom of the second coupling block, the bottom ends of the two second links are pivotally connected to the free ends of the extensions, and the top ends of the two second links are upward and backward. Extending, an arc-shaped long hole is respectively penetrated in the upper half of the two second connecting rods, and the push rod passes through the two arc-shaped long holes. The first movement is that the trigger is pressed to swing to the rear side. During the process of moving the two first links up, the two first links will push the first coupling block forward along the first track, and the second movement is when the second coupling The block is located at the front end of the second track, and the trigger is pressed to swing to the rear side to move the two second links up , Two arc-shaped elongated hole will slide rearwardly along the push rod, then the front end edge of the two arc-shaped elongated hole of the push rod and the second push block binding rearwardly along the second slide rail.
The driving device for a vascular clip applier according to claim 6, wherein the switch structure is provided with a dial button on the insertion opening cover, and a buckle is provided on the bottom of the dial button, so that The snap hook is positioned at the periphery of the insertion opening.
The driving device for a vascular clip applier according to claim 7, characterized in that a dial button hole is penetrated in the middle of the insertion opening cover, and the dial button is slidably embedded in the dial button hole, and There is a button-locking block at the bottom of the button, and a button spring is abutted between the front edge of the button-hole and the button-locking block, and the buttons are located on the left and right of the button-locking block. On both sides, according to the position of the buckle, a buckle opening is formed on the left and right sides of the peripheral edge of the insertion opening, and the buckle is fixed on the bottom side of the rear edge of the buckle opening, and is fixed on the button card. An arc-shaped pressed shape is formed in the middle of the bottom surface of the buckle block.
The driving device for a vascular clip applier according to claim 8, wherein the trigger opening extends forward to the bottom side of the front end of the accommodation compartment, and is at the bottom side of the front end of the accommodation compartment. A accommodating cabin shaft hole is transversely penetrated, and a trigger shaft hole is penetrated at the top end of the front side of the trigger. The trigger shaft hole is in communication with the accommodating cabin shaft hole. The head of the fixing head is The shape of the cover body is fitted to the front end of the containing compartment. The pivotal portion includes two pivotal arms extending symmetrically downward from the bottom side of the head, and is transversely arranged at the free ends of the two pivotal arms. A fixed head shaft hole is communicated with the accommodating cabin shaft hole, and a front rotating shaft is inserted through the trigger shaft hole, the accommodating cabin shaft hole and the fixed head shaft hole.
The handlebar device of the vascular clip applier according to claim 9, wherein the driving arm comprises two left and right symmetrical side plates of the driving arm, and a spring tension rod is inserted and fixed between the two driving arm side plates, A pivot rod is fixed between the free ends of the two driving arm side plates, a pawl block is sleeved on the pivot rod, and a pawl spring is connected between the front end of the pawl block and the spring tie rod. A pawl is formed at the rear end of the pawl block, and a gear rack is fixed in the grip to match the arc trajectory of the movement of the pawl, and a plurality of arcs are formed on the front side of the rack. A row of unidirectional ratchet teeth is formed on the top sides of the plurality of unidirectional ratchet teeth.