CN106419983B - A kind of hysteroscope stapler and its nail bin groupware - Google Patents

Abstract

The invention discloses a kind of hysteroscope stapler and its nail bin groupwares, the nail bin groupware includes nail bin casket pedestal, resist-nailed seat, sliding block, the resist-nailed seat rear end and nail bin casket pedestal are hinged, the sliding block is connected to the resist-nailed seat rear end by the way that connecting rod is movable, and can be slid back and forth on the nail bin casket pedestal, the connecting rod is by driving the resist-nailed seat open or close with sliding block movement；The nail bin groupware further includes cutter, the resist-nailed seat upper surface is equipped with two column slideways, a through slot is equipped between two column slideways, the cephalic par of the cutter is equipped with groove, it is equipped in the groove and passes through ball along its moving forward and backward in the through slot of slideway scrolling realization with the matched ball of the slideway, the cutter.Nail bin groupware of the present invention can be stable, the problem for avoiding cutter percussion force excessive, and the hysteroscope stapler is safe and reliable, and tissue cutting and sewing effect are good and easy to operate, and cost is relatively low, is suitable for promoting.

Description

A kind of hysteroscope stapler and its nail bin groupware

Technical field

The present invention relates to surgery suturing appliance technical fields, more particularly to a kind of hysteroscope stapler and its nail bin groupware.

Background technique

It is medical since invention the 1960s first staple class product in the surgical operation of medical science Stapler has become the essential a kind of medical instrument aided in edge of a knife sewing process.Development and product with medicine Research and development, more and more multi-functional staple class products application is in clinic.The scope of application has been directed to gastrointestinal surgery, liver and gall surgical department, chest The every field such as surgery, Urology Surgery, gynemetrics become one of essential tool of doctor.For patient have art in compared with Few bleeding, less operating time, with instrument replaces by hand to reduce as manual and caused by error, avoid infection, postoperative A variety of advantages such as functional rehabilitation is fast.

Traditional surgical operation includes cutting, separation, ligation, hemostasis, suture, eventually arrive at excision to organ lesion and The reconstruction of organ.Mechanical staplers can replace traditional operation, realize cutting for diseased organ by following three basic operations Remove and rebuild: 1, separate: organ is sutured away from lesion certain distance using linear staplers, including parenchymatous organ and Cavity organ, blood vessel etc., then detachment cuts off diseased organ, or once completes suture and detachment using linear incision stitching unstrument. 2, the tissue apposition that will need to suture completes pylorus forming with linear staplers stapling, such as the longitudinal sectional transverse joint at pylorus Art.3, with anastomosis ring applicator, cavity organ such as oesophagus, stomach, small intestine, colon can be subjected to end to end anastomosis, end very conveniently Side-to-side anastomosis.Stomach and intestine side to side anastomosis can be carried out using stapler.Such as nodus hemorrhoidalis end-to-end intestinal anastomosis, gastric and esophageal end-to-side anastomosis Art and stomach jejunum side-to-side anastomosis etc..

The dedicated stitching unstrument of hysteroscope (i.e. various hysteroscope staplers) shares six row's staples at present, has completely new blade in nail kit, Blade cuts off tissue from centre while stitching, and each three rows staple in both sides is made to complete suture, the functions such as hemostasis_。In actual use, There are mainly of two types for the dedicated stitching unstrument of hysteroscope, and one is manual hysteroscope stapler, another kind is electronic hysteroscope stapler.

Wherein, the opening and closing of manual hysteroscope anastomat nail storehouse component, the knife pin on cutter push on resist-nailed seat Inclined-plane realize the opening and closing of resist-nailed seat.The advance of cutter mainly leans on rack gear and percussion impelling sheet to realize, then Needs are moved back to be manually retracted by.The speed that percussion promotes leans on the artificial speed control for touching firing handle completely, and speed is sometimes fast and sometimes slow, fortune It is dynamic and unstable, it is likely to that the cutting of nail bin groupware and sewing effect is made to be affected during percussion, easily makes percussion force mistake Greatly.Relatively easy from total but complicated for operation, the stability of instrument at work is bad, and percussion force size variation is bright It is aobvious, when instrument is driven it is fast with it is bigger by influencing manually slowly, especially everyone grip difference in size it is larger, the result is that working as Speed when cutter cutting tissue is sometimes fast and sometimes slow, it is easy to cause the tissue surface cut uneven, the speed of pushing slice of nail is also same There are sometimes fast and sometimes slow for sample, it is easy to the problems such as causing nail type bad, to influence the final effect of operation.

Another electronic hysteroscope stapler is made of battery, circuit control system, motor, transmission system etc..Pass through machine Electric combination, operating becomes simple, stability when the good control device of energy works, but the upper cost of manufacture is excessively high, in use It is difficult to promote.

Summary of the invention

The object of the present invention is to provide a kind of hysteroscope stapler and its nail bin groupware, the nail bin groupware can be run surely It is fixed, the problem for avoiding cutter percussion force excessive；The hysteroscope stapler is safe and reliable, and tissue cutting and sewing effect are good, and Easy to operate, cost is relatively low, is suitable for promoting.

To achieve the above object, the present invention adopts the following technical scheme:

A kind of nail bin groupware of hysteroscope stapler, including nail bin casket pedestal, resist-nailed seat, sliding block, the resist-nailed seat rear end with Nail bin casket pedestal is hinged, and the sliding block is connected to the resist-nailed seat rear end by the way that connecting rod is movable, and can be at nail bin casket bottom It is slid back and forth on seat, the connecting rod is by driving the resist-nailed seat open or close with sliding block movement；The nail bin groupware also wraps Cutter are included, the resist-nailed seat upper surface is equipped with two column slideways, is equipped with a through slot between two column slideways, the cutter Cephalic par is equipped with groove, is equipped in the groove and passes through ball along slideway with the matched ball of the slideway, the cutter Its moving forward and backward in the through slot of scrolling realization.

As a further improvement, the upper surface of the sliding block is equipped with the docking docked with the slideway on the resist-nailed seat Slideway, the front end of the sliding block are also provided with the docking groove docked with the through slot, and the cephalic par of the cutter can pass through institute Stating ball and being rolled on the docking slideway retreats to its cephalic par cutter hub in the docking groove.

By middle part cutter hub and up and down, each wing plate forms " I " fonts cross section to the cephalic par of the cutter, described The lower end surface of the upper flange is arranged in groove for installing ball, and is symmetrical arranged in the left and right sides of middle part cutter hub.

A kind of hysteroscope stapler, including the nail bin groupware.

As a further improvement, further including the transmission mechanism for being used to open with being closed the resist-nailed seat, the driver Structure includes from rear to preceding propulsion handle, connecting rod, casing, impelling sheet, the pushing ram successively to link, and the pushing ram is connected and driven The slide block movement is to resist-nailed seat described in open or close.

The pushing ram is connected with the slide block by being located at the rod piece of its front end, is cased with spring on the rod piece, described Nail bin casket shell is installed, the spring at front end is connected on the boss of the nail bin casket interior of shell, rear end outside pushing ram It is connected on the front end face of the pushing ram, the pushing ram retracts original position by the rebound of the spring.

It further include transmission direction control mechanism, the transmission direction control mechanism includes from rear to the preceding commutation set gradually Block, pushing block, idle wheel, driving wheel, follower, transmission nut and screw rod；The commutation block driving pushing block moves forward and backward, institute Stating pushing block and travelling forward makes the driving wheel contact and be driven with follower, and the follower drives the transmission nut to rotate forward Promote screw rod；The pushing block moves backward makes the driving wheel contact and be driven with idle wheel, described in the idle wheel drive Screw rod is retracted in transmission nut reversion.

The idle wheel, driving wheel, follower are respectively provided with the hollow axle being arranged concentrically with transmission nut and screw rod, institute It states follower wheel shaft to be fixedly mounted on transmission nut, the driving wheel wheel shaft rear end is equipped with a fixed link, and the fixed link is worn It crosses the idle wheel wheel shaft and is fixedly connected with the pushing block, the both ends of the driving wheel wheel shaft are respectively equipped with unidirectional tooth, institute Follower and idle wheel are stated respectively by being correspondingly arranged matched tooth engaged and the capstan drive on respective wheel shaft.

Deflecting roller and bidentate gear member are equipped with below the idle wheel, the deflecting roller is engaged with idle wheel, the Double-gear Part includes two gears being mounted on the same axis, and one of gear is engaged with the deflecting roller, another gear and institute State follower engagement.

It further include percussion transmission device, the percussion transmission device includes firing handle and transmission gear shift self-locking mechanism, institute Stating transmission gear shift self-locking mechanism is the gear assembly with monodirectional locking function, and the firing handle is driven by the gear assembly Move the driving wheel rotation.

Due to the adoption of the above technical scheme, the present invention has at least the following advantages:

(1) it joined connecting rod between sliding block and resist-nailed seat, by pushing sliding block to realize the opening and closing of resist-nailed seat Movement.And original structure is designed by advance and the retrogressing of cutter to realize the opening and closing of resist-nailed seat, overcomes The disadvantage that original mechanism keeps the cutter percussion force excessive.

(2) ball is installed using in cutter head end, by the rolling movement of ball, it is excessive solves cutting knife thrust The problem of.

(3) be used to open and be closed the transmission mechanism of the resist-nailed seat by promoting the rotation of handle, make connecting rod, casing, Impelling sheet, pushing ram linkage, and then slide block movement is pushed, the final opening and closing for controlling resist-nailed seat are simple and reliable for structure.

(4) transmission direction control mechanism is by simply pushing commutation block, so that it may realize horizontally slipping for driving wheel, into And the advance and retrogressing of screw rod are controlled, realize that cutter steadily reliably advance and retreat.

(5) transmission gear shift self-locking mechanism is driven using gear assembly, keeps percussion force easily controllable, transmission speed is easy to Control guarantees that percussion course motion is steady.Further, transmission ratio can be controlled by the number of teeth and modulus of gear, increases transmission Speed reduces driving force.

Detailed description of the invention

The above is merely an overview of the technical solutions of the present invention, in order to better understand the technical means of the present invention, below In conjunction with attached drawing, the present invention is described in further detail with specific embodiment.

Fig. 1-1 is the overall structure diagram of hysteroscope stapler of the present invention.

Fig. 1-2 is the structural decomposition diagram of hysteroscope stapler of the present invention.

Fig. 1-3, Fig. 1-4 are the overall structure diagram of resist-nailed seat closure and nail bin groupware when open state respectively.

Fig. 1-5 is the structural decomposition diagram of nail bin groupware.

Fig. 2-1 is the decomposition diagram that the structure of resist-nailed seat opening and closing is controlled in nail bin groupware.

Fig. 2-2, Fig. 2-3 are the structural schematic diagram of resist-nailed seat closure and open state respectively.

Fig. 2-4 is the structural decomposition diagram of original nail bin groupware.

Fig. 2-5A, Fig. 2-5B are the structural schematic diagram of original resist-nailed seat unlatching and closed state respectively.

Fig. 2-6A, Fig. 2-6B are the structural decomposition diagram of original resist-nailed seat unlatching and closed state respectively.

Fig. 3-1 is resist-nailed seat, ball, sliding block and cutter fit structure decomposition diagram.

Fig. 3-2 is the top view of resist-nailed seat, ball, sliding block and cutter mated condition.

Fig. 3-3A is cutter and ball engagement, structural schematic diagram when sliding mode.

Fig. 3-3B is the enlarged drawing in the portion D in Fig. 3-3A.

Fig. 3-4A is cutter head end and ball engagement, structural schematic diagram when falling back on sliding block.

Fig. 3-4B be in Fig. 3-4A AA to cross-sectional view.

Fig. 4-1 is stapler main body schematic diagram of internal structure.

Fig. 4-2 is transmission gear shift self-locking mechanism middle gear component mated condition schematic diagram.

Fig. 4-3A is the attachment structure schematic diagram of the 4th spur gear and the 5th spur gear in transmission gear shift self-locking mechanism.

Fig. 4-3B be in Fig. 4-3A BB to cross-sectional view.

Fig. 4-4 is transmission percussion lock rearview.

Fig. 5-1 is the structural decomposition diagram of transmission direction control mechanism.

Fig. 5-2 is the status diagram that the left slip control throwing bar of driving wheel advances.

Fig. 5-3 is the status diagram that the right slip control throwing bar of driving wheel retreats.

Fig. 5-4A is the attachment structure schematic diagram of transmission nut and follower.

Fig. 5-4B be in Fig. 5-4A CC to cross-sectional view.

Fig. 5-5A is the meshing state schematic diagram of driving wheel and follower.

Fig. 5-5B is the meshing state schematic diagram of driving wheel and idle wheel.

Fig. 5-6A is the structural schematic diagram of original percussion transmission device.

Fig. 5-6B is the enlarged drawing in the portion G in Fig. 5-6A.

Fig. 5-7 is the structural exploded view of original percussion transmission device.

Fig. 5-8 is commutating structure schematic diagram in original percussion transmission device.

Fig. 5-9 is the top view of commutating structure in Fig. 5-8.

Fig. 5-10A is structural schematic diagram when original percussion transmission device rack gear is retracted.

Fig. 5-10B is the enlarged drawing in the portion F in Fig. 5-10A.

Fig. 6-1 is the structural decomposition diagram of nail bin groupware opening and closing transmission mechanism.

Fig. 6-2,6-3 are the structure of resist-nailed seat unlatching and nail bin groupware opening and closing transmission mechanism when closed state respectively Schematic diagram.

Fig. 6-4 is the fit structure schematic diagram of sliding block and pushing ram.

Fig. 6-5A is the connection schematic diagram of sliding block and pushing ram.

Fig. 6-5B be in Fig. 6-5A DD to cross-sectional view.

Specific embodiment

Please refer to shown in Fig. 1-1, the present invention provides a kind of hysteroscope stapler, the hysteroscope stapler be by nail bin groupware and Stapler main body composition one complete surgical instrument, is assembled by multiple component combinations.Specifically, please refer to Fig. 1-2, Fig. 1-3, Fig. 1-4, shown in Fig. 1-5, the hysteroscope stapler includes nail bin 48, nail bin casket pedestal 44, resist-nailed seat 41, supports Nail seat upper cover 47, nail bin casket shell 49, cutter 46, connecting rod 42, sliding block 43, trigger shaft shell 32, firing handle 18, transmission become Fast self-locking mechanism 1, transmission direction control mechanism 2 and the nail bin groupware cooperatively formed by the pushing ram 55, impelling sheet 54 etc. Opening and closing transmission mechanism 5 etc..

Generally, the present invention mainly improves hysteroscope stapler in following several respects, comprising: (1) nail bin group Part opening and closing scheme；(2) nail bin groupware ball-type ball scheme；(3) nail bin groupware opening and closing transmission scheme；(4) it passes Dynamic direction control mechanism scheme；(5) transmission gear shift self-locking mechanism scheme.Above-mentioned improvements are done below in conjunction with specific embodiment It is described in detail.

1, nail bin groupware opening and closing scheme:

1) closure of original structure resist-nailed seat 61: Fig. 2-4, Fig. 2-5B are please referred to, shown in Fig. 2-6B, is equipped on cutter 63 The knife pin 62 that can be rolled, when cutter 63 push forward along nail bin casket pedestal 64, knife pin 62 is along on resist-nailed seat 61 Inclined-plane rolls forward, knife pin 62 gives 61 1 downward component of resist-nailed seat at this time, due to the continuous advance of knife pin 62, resist-nailed seat 61 Steering rotation is constantly done, until knife pin 62 is by the inclined-plane on resist-nailed seat 61, resist-nailed seat 61 stops operating.This process is to support The closure of nail seat 61.

2) opening of original structure resist-nailed seat 61: Fig. 2-4, Fig. 2-5A are please referred to, shown in Fig. 2-6A, is equipped on cutter 63 The knife pin 62 that can be rolled, when cutter 63 push backward along nail bin casket pedestal 64, knife pin 62 is along on resist-nailed seat 61 Inclined-plane scrolls down through, and 65 upper end of spring leaf is against on nail bin casket shell 66, at this time due to the active force of spring leaf 65, resist-nailed seat 61 Constantly increase with the angle of horizontal plane, until knife pin 62 is by the inclined-plane on resist-nailed seat 61, resist-nailed seat 61 stops operating.This process The as opening of resist-nailed seat 61.

In above-mentioned original structure, the opening and closing of resist-nailed seat 61 are realized by the advance and retrogressing of cutter 63, It will cause the excessive problem of 63 percussion force of cutter.To overcome this deficiency, the present invention adopts the following technical scheme: please referring to figure 2-1, Fig. 2-2, shown in Fig. 2-3,41 rear end of resist-nailed seat and nail bin casket pedestal 44 are hinged, and the sliding block 43 can by connecting rod 42 It is movably connected in 41 rear end of resist-nailed seat, and can be slid back and forth on the nail bin casket pedestal 44, the connecting rod 42 is by with sliding block 43 movements drive 41 open or close of resist-nailed seat.As specific embodiment, as shown in Fig. 2-1, Fig. 2-2, Fig. 2-3, A pair of vertical connection otic placode of rear end setting of the resist-nailed seat 41 and a pair of of lateral connection otic placode, wherein vertical connection otic placode with The nail bin casket pedestal 44 is hinged, and a pair of of lateral connection otic placode connects each by a connecting rod 42 with 43 side wall of sliding block It connects, each 42 one end of connecting rod is hinged on the side wall of 43 lower part of sliding block, and the other end is hinged on ipsilateral lateral otic placode.The present invention The opening and closing of nail bin groupware realized via following procedure:

3) closure of resist-nailed seat 41: being the plane forward slip by sliding block 43 along nail bin casket pedestal 44, at this time connecting rod 42 do Plane Rotation, increase connecting rod 42 constantly with horizontal plane angle, push resist-nailed seat 41 rotate, when sliding block 43 with support When nail seat 41 contacts, sliding block 43 stops sliding, and 41 working face of resist-nailed seat is parallel with nail bin casket 44 working faces of pedestal at this time, as supports The closure of nail seat 41 (as shown in Fig. 2-1,2-2).

4) opening of resist-nailed seat 41: being to be slided backward by sliding block 43 along the plane of nail bin casket pedestal 44, at this time connecting rod 42 do Plane Rotation, reduce connecting rod 42 and the angle of horizontal plane constantly, pull resist-nailed seat 41 to rotate, when 42 jiaos of connecting rod To spend small to a timing, sliding block 43 stops sliding, and 41 working face of resist-nailed seat and 44 working face of nail bin casket pedestal are certain angle at this time, The as opening of resist-nailed seat 41 (as shown in Fig. 2-1,2-3).

After adopting the above scheme, due to joined connecting rod 42 between sliding block 43 and resist-nailed seat 41, by pushing sliding block 43 The opening and closing movement for realizing resist-nailed seat 41, overcomes the disadvantage that original mechanism keeps cutter percussion force excessive.

2, nail bin groupware ball-type ball scheme:

Please refer to Fig. 3-1, Fig. 3-2, Fig. 3-3A, shown in Fig. 3-3B, it is parallel that 41 upper surface of resist-nailed seat is equipped with two column Slideway 401, a through slot 403 passed through for cutter 46 is equipped between two column slideways, the cephalic par of the cutter 46 is set It is fluted, it is equipped in the groove and passes through 45 edge of ball with the matched ball 45 of the slideway 401, the cutter 46 401 scrolling realization of slideway the moving forward and backward in the through slot 403.

The upper surface of the sliding block 43 is equipped with the docking slideway 402 docked with the slideway 401 of the resist-nailed seat 41, described 43 front end of sliding block is also provided with the docking groove 404 docked with the through slot 403, and the cephalic par of the cutter 46 can be by described Ball 45, which is rolled on the docking slideway 402, recedes into its cephalic par cutter hub in the docking groove 404.

Please refer to Fig. 3-4A, Fig. 3-4B, the cephalic par of the cutter 46 is each up and down by middle part cutter hub, middle part cutter hub One wing plate forms " I " fonts cross section, and the lower end surface of the upper flange is arranged in the groove for installing ball 45 On, and be symmetrical arranged in the left and right sides of middle part cutter hub.As shown in figures 3-4, it is respectively set at left and right sides of the cutter hub of middle part One spherical ball 45 of column 3 is cooperated with 6 circular grooves on cutter 46, ball-type ball respectively by 6 ball-type balls 45 45 slideway on sliding block 43 and resist-nailed seat 41 does rolling movement.

After above-mentioned design, by the rolling movement of ball 45, solve the problems, such as that 46 thrust of cutter is excessive.

3, nail bin groupware opening and closing transmission mechanism scheme:

Please refer to Fig. 6-1, Fig. 6-2, shown in Fig. 6-3, the nail bin groupware opening and closing transmission mechanism include from it is rear to Before the propulsion handle 51, connecting rod 52, casing 53, impelling sheet 54, the pushing ram 55 that set gradually push when driving handle 51 fires Connecting rod 52 travels forward, and promotes connecting rod 52 that casing 53 is pushed to travel forward, and casing 53 pushes impelling sheet 54 to travel forward, impelling sheet 54 promotion pushing rams 55 travel forward, pushing ram 55 connection simultaneously with movable slider 43 move, and then control resist-nailed seat 41 opening with Closure.

Please refer to shown in Fig. 6-4, Fig. 6-5A, Fig. 6-5B, the pushing ram 55 is connect by rod piece with sliding block 43, institute It states and is cased with spring 56 on rod piece, nail bin casket shell 49 is installed outside the pushing ram 55,56 front end of spring is pressed against institute It states on the boss inside nail bin casket shell 49, rear end is pressed against on the front end face of the pushing ram 55.

Spring 56 is initially located in just compressive state, when pushing ram 55 is pushed ahead, since nail bin casket shell 49 is fixed not Dynamic, the continuation of spring 56 is compressed.When promoting handle 51 to retract in situ, spring 56 pulls pushing ram 55 to return to original by own resilient Position, while impelling sheet 54 returns to original position, pushing ram 55 pulls sliding block 43 to return to original position, realizes that resist-nailed seat 41 automatically opens.

Above-mentioned nail bin groupware opening and closing transmission mechanism makes connecting rod 52 do plane fortune by the rotation of propulsion handle 51 It is dynamic, allow casing 53 to move forward and backward so that pushing ram 55 is moved with movable slider 43, the final opening for controlling resist-nailed seat 41 with close It closes.

4, transmission direction control mechanism scheme:

Original structure scheme: it please refers to shown in Fig. 5-7, Fig. 5-8, Fig. 5-9, Fig. 5-10A and Fig. 5-10B, original structure In design, when rack gear 73 fires in place forward, return block 76 is pulled, slide plate 77 is along two pillars on rack gear 73 to downslide Dynamic, slide plate 77 pulls down percussion and pushes piece 72, pulls on return block 76, and rack gear 73 is retracted, until pulling position to stop.

Percussion promotes retracting for stock to pull return block 76 to control by artificial in original mechanism, and dynamics and speed are difficult to slap It holds, moves and unstable, structure is relative complex, and operation is not easy to control.

To overcome above-mentioned deficiency, transmission direction control mechanism is adopted the following technical scheme that in the present invention

Please refer to Fig. 5-1, Fig. 5-2, shown in Fig. 5-4, the transmission direction control mechanism includes setting gradually from rear to preceding Commutation block 21, pushing block 22, idle wheel 23, driving wheel 24, follower 25, transmission nut 26 and screw rod 27, wherein the block that commutates 21 for driving pushing block 22 to move forwards or backwards.

The idle wheel 23, driving wheel 24, follower 25, which are respectively provided with, to be arranged concentrically with transmission nut 26 and screw rod 27 Hollow axle, it is solid equipped with one that 25 wheel shaft of follower is fixedly mounted on the 24 wheel shaft rear end of driving wheel on transmission nut 26 Fixed pole, the fixed link pass through 23 wheel shaft of idle wheel and are fixedly connected with the pushing block 22.

Deflecting roller 29 and bidentate gear member 28 are equipped with below the idle wheel 23, deflecting roller 29 is engaged with idle wheel 23, described Bidentate gear member 28 includes two gears being mounted on the same axis, one of them is engaged with the deflecting roller 29, another with The follower 25 engages.

The wheel shaft both ends of the driving wheel 24 are respectively equipped with unidirectional tooth, and the follower 25 and idle wheel 23 are respectively respective Matched tooth engaged is correspondingly arranged on wheel shaft.

When above-mentioned transmission direction control mechanism specific works:

1) push ahead transmission: as shown in Fig. 5-2, when commutation block 21 pushes up, pushing block 22 is sliding forward (left in figure) Dynamic, pushing block 22 pushes driving wheel 24 and follower 25 to bump against, due to having driving spring 30 in front of follower 25, so driving wheel 24 belong to flexible contact with follower 25, when driving wheel 24 rotates, the tooth and follower axle end of 24 axle ends of driving wheel The tooth in portion is at a fully engaged (tooth of 25 axle ends of master gear 24 and follower is one-directional rotation tooth, as shown in Fig. 5-5A).Due to There is the key cooperation (as shown in Fig. 5-4A, Fig. 5-4B) on keyway and transmission nut 26 on follower 25, and then drives transmission nut 26 rotate, and the internal screw thread and screw rod 27 on transmission nut 26 cooperate, and screw rod 27 is pushed ahead.

2) drawing back, it is dynamic to return: as shown in Fig. 5-3, when commutation block 21 pushes down on, pushing block 22 is sliding backward (right in figure) Dynamic, the driving wheel spring 30 in 24 front of driving wheel pushes driving wheel 24 backward, and driving wheel 24 and idle wheel 23 bump against, due to there is master Driver spring 30, so driving wheel 24 and idle wheel 23 belong to flexible contact, when driving wheel 24 rotates, 24 axle end of driving wheel The tooth in portion and the tooth of 23 axle ends of idle wheel it is at a fully engaged (tooth of 23 axle ends of master gear 24 and idle wheel be one-directional rotation Tooth, as shown in Fig. 5-5B).Idle wheel 23 drives deflecting roller 29, and deflecting roller 29 drives bidentate gear member to be circumferentially driven, and then drives quilt Driving wheel 25 circumferentially rotates, and transmission nut 26 rotates clockwise at this time, and screw rod 27 is retracted backward.

Above-mentioned transmission direction control mechanism is by simply pushing commutation block 21, so that it may realize that the front and back of driving wheel 24 is sliding It is dynamic, and then the advance and retrogressing of screw rod 27 are controlled, screw rod movement is realized the advance of cutter and is retracted, and effectively controls cutter and transports Stationarity when especially retracting is moved, and to operate more convenient reliable.

5, transmission gear shift self-locking mechanism scheme:

Original structure scheme: please referring to Fig. 5-6A, Fig. 5-6B, shown in Fig. 5-7, and in original structure design, rack gear 73 is pacified On slide plate 77, the two rear end through there is a return block 76, reset tension spring 79 by 78 sets of adapter on return block 76, when hitting When sending out the percussion of handle 75, percussion impelling sheet 72 pushes rack gear 73 to slide straight forward, the fixed percussion in its front end of the drive of rack gear 73 Stock (not shown) is promoted to travel forward, when retracting, by pulling return block 76 and reset tension spring 79 to retract.

Original structure disadvantage: percussion promotes the movement velocity of stock to lean on the artificial speed control for touching firing handle 75 completely System, speed is sometimes fast and sometimes slow, move it is simultaneously unstable, be likely to make during percussion the cutting of nail bin groupware and sewing effect by It influences, and is easy to keep percussion force excessive.

To overcome above-mentioned deficiency, the present invention adopts the following technical scheme: as shown in figs. 1-2, hysteroscope of the invention is coincide The transmission percussion lock of device includes driving handle 18, transmission gear shift self-locking mechanism 1, wherein the transmission gear shift self-locking mechanism 1 is Gear assembly with monodirectional locking function please refers to Fig. 4-1, Fig. 4-2, shown in Fig. 4-4, and the firing handle 18 passes through it and pushes up The driving cog in portion and the gear assembly are driven, and gear assembly drives the driving wheel 24 in transmission direction control mechanism to rotate, main The rotation of driving wheel 24 drives screw rod 27 to act, and the end of screw rod 27 is connected with cutter 46, so drive the advance of cutter 46 or It retracts.

Embodiment as one preferred, the transmission gear shift self-locking mechanism include the first to the 5th spur gear and first, Second bevel gear, 17 engaged transmission of driving cog and first spur gear at 18 top of the driving handle, described first, the Two, third spur gear 17,16,15 intermeshes, and the four, the 5th spur gear 14,13 passes through self-locking structure single-direction transmission.Institute It states the first, second bevel gear 12,11 and all has coaxial straight-tooth circle and cone gear ring, the straight-tooth circle of the first bevel gear 12 and the The transmission of five spur gears 13, the cone gear ring of first bevel gear 12 and the cone gear ring of second bevel gear 11 commutate and are driven.

Please refer to shown in Fig. 4-3A, Fig. 4-3B, the self-locking structure is the pawl and ratchet worked in coordination, the spine Tooth is set to 13 inner ring of the 5th spur gear, and the pawl is set to 14 axle ends of the 4th spur gear, the 4th and the 5th spur gear 14,13 coaxial arrangement.Single-direction transmission is ensured by the pawl and ratchet worked in coordination, when solving the reciprocating motion of driving handle 18 The inversion problem of spur gear, plays self-locking.

When driving handle 18 fires, the driving cog at 18 top of driving handle drives the first spur gear 17 to circumferentially rotate, into And the second spur gear 16 and third spur gear 15 is driven to circumferentially rotate, third spur gear 15 drives the 4th spur gear 14 is circumferential to turn Dynamic, the 4th spur gear 14 drives 13 single-direction transmission of the 5th spur gear, the 5th spur gear 13 drive again the first, second bevel gear 12, 11.I.e. the reciprocating motion of driving handle 18 drives second bevel gear 11 to be constantly driven toward the direction.Due to gear assembly In second bevel gear 11 straight-tooth circle and driving wheel 24 directly engaged transmission, driving wheel 24 again by commutate block 21 to be driven Screw rod 27 moves and then drives the advance and retrogressing of cutter 46.

Using above-mentioned transmission shifting mechanism, transmission speed can be effectively controlled, keep nail bin groupware movement during percussion flat Surely, percussion force problems of too is controlled；Transmission ratio is controlled by the number of teeth of gear and modulus simultaneously, transmission speed and driving force can be made Reach perfect condition.

Example as one preferred, the number of teeth and modulus of said gear be provided that 17 modulus=1 of the first spur gear, Tooth number Z 17=10；Second spur gear, 16 modulus=1, tooth number Z 16=15；Third spur gear 15 is modulus=1, tooth number Z 15= 18, the 4th spur gear 14 is modulus=1, tooth number Z 14=10；5th spur gear 13 is modulus=0.6, tooth number Z 13=35；First Straight-tooth on bevel gear 12 is modulus=0.6, tooth number Z 12a=13, and circular cone tooth is modulus=0.5, tooth number Z 12b=30；Second Circular cone tooth on bevel gear 11 is modulus=0.5, tooth number Z 11a=12, and straight-tooth is modulus=0.5, tooth number Z 11b=28；Actively Wheel 24 is modulus=0.5, tooth number Z 24=30.

Based on above-mentioned setting, transmission ratio i1=Z17/Z16=10/15, i2=Z16/Z15=15/18, i3=Z15/ Z14=18/10, i4=Z13/Z12a=35/13, i5=Z12b/Z11a=30/12, i6=Z11b/Z24=28/30 are substituted into Resultant gear ratio is i0=i1*i2*i3*i4*i5*i5*i6=6.28；I.e. when 17 revolving speed of the first spur gear is n17, driving wheel 24 Revolving speed n24=6.28n17.

In conclusion due to using above-mentioned improvement project, when stapler practical operation of the invention, passes through percussion and promote Handle 51 can be such that nail bin groupware is closed；Repeatedly fired firing handle 18, can make cutter 46 travel forward, at this time to organize into Row cutting and suturing；After percussion in place, commutation block 21 can be pushed down on, is driven driving wheel 24 and idle wheel 23, again Repeatedly fired firing handle 18 can be such that cutter 46 return；It retracts and promotes handle 31, nail bin groupware can be made to open, operated at this time Terminate.

The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, this Field technical staff makes a little simple modification, equivalent variations or modification using the technology contents of the disclosure above, all falls within this hair In bright protection scope.

Claims (9)

1. a kind of nail bin groupware of hysteroscope stapler, which is characterized in that described to support nail including nail bin casket pedestal, resist-nailed seat, sliding block Base rear end and nail bin casket pedestal are hinged, and the sliding block is connected to the resist-nailed seat rear end by the way that connecting rod is movable, and can be described It is slid back and forth on nail bin casket pedestal, the connecting rod is by driving the resist-nailed seat open or close with sliding block movement；

The nail bin groupware further includes cutter, and the resist-nailed seat upper surface is equipped with two column slideways, is equipped between two column slideways One through slot, the cephalic pars of the cutter are equipped with groove, be equipped in the groove with the matched ball of the slideway, it is described Cutter are by ball along its moving forward and backward in the through slot of slideway scrolling realization；

The upper surface of the sliding block is equipped with the docking slideway docked with the slideway on the resist-nailed seat, the front end of the sliding block It is also provided with the docking groove docked with the through slot, the cephalic par of the cutter can be rolled to the docking by the ball and be slided Retreat to its cephalic par cutter hub in the docking groove.

2. a kind of nail bin groupware of hysteroscope stapler according to claim 1, which is characterized in that the head end of the cutter By middle part cutter hub and up and down, each wing plate forms " I " fonts cross section in portion, and the groove setting for installing ball exists On the lower end surface of the upper flange, and it is symmetrical arranged in the left and right sides of middle part cutter hub.

3. a kind of hysteroscope stapler, which is characterized in that including the described in any item nail bin groupwares of claim 1-2.

4. a kind of hysteroscope stapler according to claim 3, which is characterized in that further include being used to open to support with described in closure The transmission mechanism of nail seat, the transmission mechanism include from rear to the preceding propulsion handle successively to link, connecting rod, casing, impelling sheet, Pushing ram, the pushing ram connect and drive the slide block movement to resist-nailed seat described in open or close.

5. a kind of hysteroscope stapler according to claim 4, which is characterized in that the pushing ram is by being located at its front end Rod piece is connected with the slide block, and spring is cased on the rod piece, and nail bin casket shell, the spring are equipped with outside the pushing ram Front end is connected on the boss of the nail bin casket interior of shell, and rear end is connected on the front end face of the pushing ram, the propulsion Bar retracts original position by the rebound of the spring.

6. a kind of hysteroscope stapler according to claim 3, which is characterized in that further include transmission direction control mechanism, institute Stating transmission direction control mechanism includes from rear to the preceding commutation block set gradually, pushing block, idle wheel, driving wheel, follower, biography Dynamic nut and screw rod；

The commutation block driving pushing block moves forward and backward, and the pushing block, which travels forward, contacts the driving wheel simultaneously with follower Transmission, the follower drive the transmission nut to rotate forward and promote screw rod；The pushing block move backward make the driving wheel with Idle wheel is contacted and is driven, and the idle wheel drives the transmission nut reversion to retract screw rod.

7. a kind of hysteroscope stapler according to claim 6, which is characterized in that the idle wheel, driving wheel, follower point The hollow axle that Ju You not be arranged concentrically with transmission nut and screw rod, the follower wheel shaft are fixedly mounted on transmission nut, The driving wheel wheel shaft rear end is equipped with a fixed link, and the fixed link passes through the idle wheel wheel shaft and fixes with the pushing block Connection, the both ends of the driving wheel wheel shaft are respectively equipped with unidirectional tooth, and the follower and idle wheel are respectively by respective wheel shaft On be correspondingly arranged matched tooth engaged and the capstan drive.

8. a kind of hysteroscope stapler according to claim 7, which is characterized in that be equipped with below the idle wheel deflecting roller and Bidentate gear member, the deflecting roller are engaged with idle wheel, and the bidentate gear member includes two gears being mounted on the same axis, In a gear engaged with the deflecting roller, another gear is engaged with the follower.

9. a kind of hysteroscope stapler according to claim 6, which is characterized in that it further include percussion transmission device, it is described to hit Hair transmission device includes firing handle and transmission gear shift self-locking mechanism, and the transmission gear shift self-locking mechanism is with monodirectional locking function The gear assembly of energy, the firing handle drive the driving wheel rotation by the gear assembly.