CN208447683U - A kind of slight drag stapler - Google Patents

Abstract

The utility model provides a kind of slight drag stapler, including a fixed plate, and the fixed plate bottom has an inside groove, and the inside groove runs through the fixed plate, and the inside groove can accommodate the broaching tool piece of the stapler；The inside groove inner peripheral surface is provided at least one set of pin shaft hole, is disposed with pin shaft inside the pin shaft hole.Slight drag stapler provided by the utility model, before and after the broaching tool piece when translation, the broaching tool piece drives the pin shaft to roll in the pin shaft hole, to reduce the force of sliding friction of the broaching tool piece, improves the fluent movements degree of the broaching tool piece.

Description

A kind of slight drag stapler

Technical field

The utility model relates to stapler field more particularly to a kind of slight drag staplers.

Background technique

Stapler is the equipment of the substitution manual suture medically used, is mainly used for the reconstruction of hysteroscope lower digestive tract and internal organs The closure of stump or notch in resection operation.Suitable for a variety of openings or minimally invasive general surgery, gynemetrics, Urology Surgery, Thoracic surgery and paediatric surgery.They can be used in conjunction with staple line or tissue scaffold materials.These instruments can also be used in liver parenchyma The detachment and excision of (liver vascular system and gallbladder tube structure), pancreas, kidney and spleen.Due to the development and production skill of modern science and technology The improvement of art, the stapler reliable in quality clinically used at present is easy to use, tight, elastic suitable, and especially its suture is fast The advantages that fast, easy to operate and few side effects and postoperative complication, it is able to the tumor operation that can not be cut off in the past Aura excision, very by the favor and high praise of domestic and international Clinical Surgery doctor.Stapler main operational principle is to be followed closely using titanium to group It knits and carries out detachment or coincide, be similar to stapler.

Since the cutter of stapler are connected with broaching tool piece, and since stapler front end is with the straight of certain length Bar, broaching tool leaf length is longer, when drawing blade movement, needs across the fixed board group of rifle core, angular transformation mechanism assembly and broaching tool piece Part etc., when it is dynamic act on broaching tool piece when, cutter start to be run, complete joint-cutting movement.But since stapler makes With in the process, it is sometimes desirable to toe angle mapping device component is curved, at this point, broaching tool piece can also bend therewith, When angular transformation mechanism assembly makes jaw rotate 0 °, 15 °, 30 °, cutter operation can be smooth without too big resistance, but works as angle When mapping device component makes jaw go to 45 °, 60 °, the resistance of broaching tool piece can be significantly increased, and seriously affect cutter operation.Cause This, urgent need provides a kind of slight drag stapler, is able to solve cutter and is obstructed situation, promotes jaw cutter in wide-angle and transports Row situation.

In view of the above drawbacks, the utility model creator obtains originally practical new finally by prolonged research and practice Type.

Utility model content

To solve the above problems, the technical solution adopted in the utility model is, a kind of slight drag stapler is provided, including One fixed plate, the fixed plate bottom have an inside groove, and the inside groove runs through the fixed plate, and the inside groove can accommodate described The broaching tool piece of stapler；The inside groove inner peripheral surface is provided at least one set of pin shaft hole, is disposed with pin shaft inside the pin shaft hole.

Preferably, the hole of the inside groove two-end part of the fixed plate is less than the hole at position among the inside groove.

Preferably, the intermediate position two sidewalls of the inside groove of the fixed plate are provided with pin shaft hole, arrangement in pin shaft hole There is pin shaft, when the broaching tool piece is bent and translation acts, the pin shaft arranged with the intermediate position two sidewalls of the inside groove is rolled Dynamic friction.

Preferably, the slight drag stapler further includes a tooth sector, the tooth sector front end is provided with a torsion Portion, the torsional part front and back are run through, and the broaching tool piece passes through the torsional part, and two sidewalls are provided with pin shaft on the inside of the torsional part Hole, the pin shaft hole inside is for accommodating pin shaft, when the broaching tool piece is bent and translation acts, with two sides on the inside of the torsional part Wall is arranged pin shaft and carries out rolling friction.

Preferably, the tooth sector bottom surface is provided with a limiting steering slot, the fixed front edge of board top surface is provided with One limiting steering block, the limiting steering block are arranged in inside the limiting steering slot.

Preferably, the slight drag stapler further includes a ball and socket joint pedestal, the ball and socket joint base bottom is provided with one Be translatable limiting slot, and fixed plate rear end top surface is provided with a translation limited block, and the translation limited block is placed in the translation limit Inside the slot of position.

Preferably, the fixed plate bottom is provided with cover plate, it is used for the pin being placed in inside the pin shaft hole Axis is limited.

Preferably, being provided with an at least gap at the fixed plate outer ledge, it is used to accommodate stapler rotary part Hose.

Compared with the prior art the utility model has the beneficial effects that: 1, before and after the broaching tool piece when translation, it is described Broaching tool piece drives the pin shaft to roll in the pin shaft hole, to reduce the force of sliding friction of the broaching tool piece, described in raising The fluent movements degree of broaching tool piece；2, the hole inside groove centre position is greater than the hole of the inside groove two-end part, to give The broaching tool piece bending provides certain deformation space and is more further disposed in the intermediate position two sidewalls of the inside groove Pin shaft can make the broaching tool piece bending part when front and back is translatable, the pin arranged with the intermediate position two sidewalls of the inside groove Axis carries out rolling friction, reduces frictional resistance, keeps movement more smooth, avoids because overexerting or firmly patient suffers from caused by unevenness The unnecessary damage at sick position；3, it is provided with a gap at the fixed plate outer ledge, is used to accommodate the stapler and turns The hose at dynamic position, because angular turn bring deforms；4, the torsional part of the tooth sector front end clamps the broaching tool piece Torsion, before and after the broaching tool piece when translation, the force of sliding friction of the broaching tool piece and the torsional part will hinder the drawing The normal translation of blade, pin shaft is arranged in two sidewalls on the inside of the torsional part at this time, sliding friction can be changed into rolling and rubbed It wipes, substantially reduces frictional force, improve the translation smooth degree of the broaching tool piece；5, the limiting steering block and the limiting steering slot Relatively rotate movement, when the limiting steering block touches the limiting steering groove edge, the tooth sector rotation Movement stops, and avoids the tooth sector because rotational angle is excessive, the internal structure of the stapler is caused to damage.

Detailed description of the invention

Fig. 1 is the utility model stapler structural schematic diagram；

Fig. 2 is the structural schematic diagram of the utility model angular transformation mechanism operation handle part；

Fig. 3 is the structural schematic diagram of the utility model angular transformation mechanism operation handle and transmission component；

Fig. 4 is the utility model angular transformation mechanism operation handle limiting slot schematic diagram；

Fig. 5 is the utility model stapler straight bar part schematic diagram；

Fig. 6 is the utility model angular transformation mechanism runner assembly partial schematic diagram；

Fig. 7 is the utility model angular transformation mechanism explosive view one；

Fig. 8 is the utility model angular transformation mechanism explosive view two；

Fig. 9 is the utility model angular transformation mechanism joint head schematic diagram of base structure；

Figure 10 is the utility model stapler fixed plate partial structure diagram one；

Figure 11 is the utility model stapler fixed plate partial structure diagram two；

Figure 12 is the utility model stapler partial exploded view one；

Figure 13 is the utility model stapler partial exploded view two；

Figure 14 is the utility model stapler partial exploded view three；

Figure 15 is the utility model stapler partial exploded view four；

Figure 16 is the utility model stapler fixed plate part explosive view.

Specific embodiment

Below in conjunction with attached drawing, the above and other technical features and advantages of the present invention are described in more detail.

Embodiment one

As shown in Figure 1, the utility model provides a kind of slight drag stapler, it is used to reduce cutter and is obstructed situation, mention Rise jaw cutter operation conditions in wide-angle.

The slight drag stapler includes an angular transformation mechanism, is used to control operating side and then realizes the angle of follower ends Degree variation, in conjunction with shown in Fig. 2 to Fig. 4, the angular transformation mechanism includes:

An at least operation handle 11 is the operating side of the angular transformation mechanism；

One transmission component is used to transmit the active force of the operation handle 11；

The transmission component includes a transmission gear 13 and a driving rack 12；

Preferably, the transmission component further includes a drive rod 14；

Preferably, the operation handle 11 is provided with a clamping groove, the 13 pivot center direction of transmission gear is provided with One shackle member, the shackle member are fixed with the clamping groove, pull the rotating spanner of the operation handle 11, and then drive The transmission gear 13 rotates；The transmission gear 13 is engaged with the driving rack 12, and the rotation of transmission gear 13 is in turn The driving rack 12 is driven to be moved forward and backward；12 front end of driving rack is provided with a grab, the grab with the biography 14 first end of lever is fixedly connected, and the driving rack 12, which is moved forward and backward, drives the drive rod 14 to generate shift in position；

Preferably, 11 outer edge of operation handle is additionally provided at least one limiting slot 111, the limiting slot 111 that This be disposed adjacent and around 11 outer edge of operation handle circumferentially；The limiting slot 111 and a spacing block set 112 match It closes, when the operation handle 11 rotation, the limiting slot 111 is caught in step by step in the spacing block set 112, and then to the behaviour Make handle 11 to be limited, required rotational angle position can be maintained at.

Embodiment two

Slight drag stapler as described above, the present embodiment is different from place and is, referring to shown in Fig. 6 to Fig. 9, institute Stating angular transformation mechanism further includes runner assembly, is used to the linear motion of the drive rod 14 being converted to rotational motion；

The runner assembly includes: a limit rack gear 21, one first ball and socket joint gear 22, a second joint head gear 23, One tooth sector 24；

The 14 second end end of drive rod is provided with a through-hole 141, is provided with a boss on the limit rack gear 21 211, the through-hole 141 is engaged by clamping with the boss 211, and driving force is transmitted to the limit rack gear 21 by the drive rod 14 On；

The limit rack gear 21 extends a side, and rack gear, the tooth of the limit rack gear 21 are provided on the side It is meshed with the tooth of the first ball and socket joint gear 22, and then the translational motion of the limit rack gear 21 is converted to described first The rotational motion of ball and socket joint gear 22；

The first ball and socket joint gear 22 is meshed with the second joint head gear 23, preferably, the second joint The external tooth loop diameter of head gear 23 is less than the external tooth loop diameter of the first ball and socket joint gear 22, when multiple sets of teeth wheel being avoided to rotate It is interfered with the limit rack gear, causes movement bite；

In conjunction with shown in Figure 12,24 tail end of tooth sector is provided with dentalation 243, the tooth of the tooth sector 24 with The tooth of the second joint head gear 23 is meshed；

By pulling the drive rod 14, and then drive the rotation of the first ball and socket joint gear 22, first joint Head gear 22 drives the second joint head gear 23 to rotate again, and then the second joint head gear 23 drives the steering tooth 24 rotation of wheel, to realize the operation that translational motion is converted to rotational motion.

Embodiment three

Slight drag stapler as described above, the present embodiment is different from place and is, referring to shown in Fig. 6 to Fig. 9, institute Stating angular transformation mechanism further includes a ball and socket joint pedestal 25, and the ball and socket joint pedestal 25 is provided with a limiting groove 254, is used for The straight bar part of the drive rod 14 is accommodated, and limits the drive rod 14 and is only capable of moving in a straight line along limiting groove 254；It is described Ball and socket joint pedestal 25 further include: one first rotation axis 251, one second rotation axis 252, a third rotation axis 253, described first closes Section header gear 22 is socketed in first rotation axis 251, and the second joint head gear 23 is socketed on second rotation axis On 252, the tooth sector 24 is socketed in the third rotation axis 253；

Preferably, the axle center of first rotation axis 251, second rotation axis 252 and the third rotation axis 253 position In on same straight line；Further, first rotation axis 251, second rotation axis 252 and the third rotation axis 253 axle center and the motion profile extended line of the drive rod 14 coincide.

The limit rack gear 21 the drive rod 14 drive under, can along the ball and socket joint pedestal 25 sliding platform into Row translation, described sliding platform one end are equipped with protrusion, can limit to the limit rack gear 21.

Example IV

Slight drag stapler as described above, the present embodiment is different from place and is, referring to shown in Fig. 6 to Fig. 9, institute It states limit 21 bottom of rack gear and is provided with a translation limited block 212,25 bottom of ball and socket joint pedestal is provided with a clamping limited block 256；

The angular transformation mechanism further includes a pedestal 26, and the first limit guide groove 261 and are provided on the pedestal 26 Two limit guide grooves 262, the translation limited block 212 are placed in inside first limit guide groove 261, and can be along first limit Position guide groove 261 slides；The clamping limited block 256 is placed in inside second limit guide groove 262, the clamping limited block 256 It is suitable with 262 size of the second limit guide groove, limit the clamping limited block 256 freedom degree in the horizontal direction.

Preferably, the pedestal 26 is additionally provided with one first clamping portion 263, the ball and socket joint pedestal 25 is equipped with one Second clamping portion 257, first clamping portion 263 is engaged by clamping with second clamping portion 257, by the ball and socket joint pedestal 25 It is fixed on the pedestal 26.

Preferably, the pedestal 26 is provided with a pedestal limiting groove 264, it is used to accommodate the straight-bar of the drive rod 14 Part, and limit the drive rod 14 and be only capable of moving in a straight line along the pedestal limiting groove 264；The pedestal limiting groove 264 connect with the limiting groove 254, accommodate the drive rod 14 jointly.

Embodiment five

Slight drag stapler as described above, the present embodiment are different from place and are, referring to Fig.1, shown in Fig. 5, institute Closure of the stapler for stump or notch in the reconstruction of hysteroscope lower digestive tract and organs resection operation is stated, before the stapler Hold straight bar part that the angular transformation mechanism is set, the angular transformation mechanism is connect by a spring catch with a clamping device, The clamping device can carry out opening and closing movement around the spring catch, and follow the rotational action of the angular transformation mechanism, real Now to the angular adjustment of stapler front end clamping device.

The operation handle 11 is pulled, and then the transmission gear 13 is driven to rotate；The transmission gear 13 and the biography Carry-over bar 12 engages, and the transmission gear 13 rotates and then the driving rack 12 is driven to be moved forward and backward；The driving rack 12 Front end is provided with a grab, and the grab is fixedly connected with 14 first end of drive rod, moves before and after the driving rack 12 It is dynamic that the drive rod 14 is driven to generate shift in position；The 14 second end end of drive rod is provided with a through-hole 141, the limit It is provided with a boss 211 on rack gear 21, the through-hole 141 is engaged by clamping with the boss 211, and the drive rod 14 is by driving force It is transmitted on the limit rack gear 21；The limit rack gear 21 extends a side, and rack gear is provided on the side, described Limit rack gear 21 tooth be meshed with the tooth of the first ball and socket joint gear 22, and then by it is described limit rack gear 21 translational motion Be converted to the rotational motion of the first ball and socket joint gear 22；The first ball and socket joint gear 22 and the second joint head gear 23 are meshed, and the rotation of the first ball and socket joint gear 22 drives the second joint head gear 23 to rotate, the tooth sector 24 Tail end is provided with dentalation, and the tooth of the tooth sector 24 is meshed with the tooth of the second joint head gear 23；Described The rotation of two ball and socket joint gears 23 drives the tooth sector 24 to carry out angular turn around the third rotation axis 253；And then it is described Clamping device described in 24 synchronous drive of tooth sector carries out angular turn.

Preferably, there are four gears for the operation handle 11, are adjusted, be can be realized by the gear of the operation handle 11 15 ° of the clamping device, 30 °, 45 °, 60 ° of angular turn.

Preferably, the not set gear of the operation handle 11 can be realized institute by the adjusting to the operation handle 11 Any angle that clamping device is stated at 0 ° to 60 ° is adjusted.

Stapler with the angular transformation mechanism can adapt to more application environments, so as at operative space and angle In the case that degree is restricted, the sewing process under the surgical environments of confined space limited angle is realized, it can be by stapler Clamping device is curved；Since the rotational plane of the rotational plane and the clamping device of the operation handle 11 is perpendicular, To when the operation handle 11 is manually operated, twisting resistance can't the subtle angle of rotational plane product to the clamping device Degree variation, it is as small as possible to reduce by adjusting movement bring front position variation, so that manual operation bring error is reduced, Patient is reduced because of situations such as subtle angle change bring bleedings, realizes that the clamping device in the fixation of special angle, and is protected Demonstrate,prove the precision of rotational angle.

Embodiment six

Slight drag stapler as described above, the present embodiment are different from place and are, 0 to shown in Figure 16 referring to Fig.1, The stapler further includes a fixed plate 30, and 30 bottom of fixed plate has an inside groove 31, and the inside groove 31 is through described solid Fixed board 30, the inside groove 31 can accommodate the broaching tool piece 40 of the stapler；31 inner peripheral surface of inside groove is provided at least one Pin shaft hole 32 is organized, is disposed with pin shaft 35 inside the pin shaft hole 32, the pin shaft 35 is in contact with the broaching tool piece 40, when described When being translatable before and after broaching tool piece 40, the broaching tool piece 40 drives the pin shaft 35 to roll in the pin shaft hole 32, to reduce institute The force of sliding friction for stating broaching tool piece 40 improves the fluent movements degree of the broaching tool piece 40.

Preferably, the hole of 31 two-end part of the inside groove of the fixed plate 30 is less than the intermediate position of the inside groove 31 Hole；

Preferably, the intermediate position two sidewalls of the inside groove 31 of the fixed plate 30 are provided with pin shaft hole, in pin shaft hole It is disposed with pin shaft, when the angular transformation mechanism is bent, the broaching tool piece 40 also will appear the bending of certain angle, when When 40 bending angle of broaching tool piece is more than 30 degree, the frictional resistance being translatable before and after the broaching tool piece 40 will be greatly increased, at this point, Since the hole at the intermediate position of the inside groove 31 is greater than the hole of 31 two-end part of inside groove, thus curved to the broaching tool piece 40 Folding provides certain deformation space and is more further disposed with pin shaft in the intermediate position two sidewalls of the inside groove 31, can make When front and back is translatable, the pin shaft arranged with the intermediate position two sidewalls of the inside groove 31 is rolled 40 bending part of broaching tool piece Dynamic friction reduces frictional resistance, keeps movement more smooth, patient's disease sites caused by avoiding because of the unevenness that overexerts or exert oneself Unnecessary damage.

Preferably, 30 bottom of fixed plate is provided with cover plate, it is used for the institute being placed in inside the pin shaft hole 32 Pin shaft 35 is stated to be limited.

Preferably, being provided with a gap 34 at 30 outer ledge of fixed plate, it is used to accommodate the stapler rotation The hose at position, because angular turn bring deforms.

Embodiment seven

Slight drag stapler as described above, the present embodiment are different from place and are, 0 to shown in Figure 16 referring to Fig.1, 24 front end of tooth sector is provided with a torsional part, runs through before and after the torsional part, and the broaching tool piece 40 passes through the torsion Portion, torsional part inside two sidewalls are provided with pin shaft hole 242, are used to accommodate pin shaft inside the pin shaft hole 242, when described turn When rotating to 24 tail portion dentalation 243 of gear, the torsional part of 24 front end of tooth sector clamps the broaching tool piece 40 and turns round Turn, when being translatable before and after the broaching tool piece 40, the force of sliding friction of the broaching tool piece 40 and the torsional part will hinder described The normal translation of broaching tool piece 40, pin shaft is arranged in two sidewalls on the inside of the torsional part at this time, and sliding friction can be changed into rolling Dynamic friction substantially reduces frictional force, improves the translation smooth degree of the broaching tool piece 40.

Embodiment eight

Slight drag stapler as described above, the present embodiment are different from place and are, the tooth sector 24 is gone to the bottom Face is provided with a limiting steering slot 241, and the 30 front end top surface of fixed plate is provided with a limiting steering block 37, the limiting steering Block 37 is arranged in inside the limiting steering slot 241, and 37 size of limiting steering block is less than the limiting steering slot 241, when When the tooth sector 24 rotates, the limiting steering block 37 and the limiting steering slot 241 relatively rotate movement, work as institute When stating limiting steering block 37 and touching 241 edge of limiting steering slot, 24 rotational action of tooth sector stops, and avoids institute Tooth sector 24 is stated because rotational angle is excessive, the internal structure of the stapler is caused to damage.

Embodiment nine

Slight drag stapler as described above, the present embodiment and above-described embodiment eight the difference is that, the steering 24 bottom surface of gear is provided with a limiting steering slot 241, and the 30 front end top surface of fixed plate is provided with a limiting steering block 37, institute It states limiting steering block 37 to be arranged in inside the limiting steering slot 241,37 size of limiting steering block and the limiting steering 241 size of slot is identical, and when the tooth sector 24 rotation, the limiting steering block 37 drives 241 turns of the limiting steering slot It is dynamic, and then make 30 front end of fixed plate that the tooth sector 24 be followed to rotate；

25 bottom of ball and socket joint pedestal is provided with a translation limiting slot 255, and the 30 rear end top surface of fixed plate is provided with One translation limited block 36, the translation limited block 36 is placed in inside the translation limiting slot 255, when 30 front end of fixed plate with When being rotated with the tooth sector 24, the translation limiting slot 255 of 30 rear end of fixed plate around the ball and socket joint pedestal 25 Rotation, but change in location does not occur on horizontal position.

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art Art personnel can also make several improvement and supplement under the premise of not departing from the utility model method, these are improved and supplement Also it should be regarded as the protection scope of the utility model.

Claims (8)

1. a kind of slight drag stapler, which is characterized in that including a fixed plate, the fixed plate bottom has an inside groove, described Inside groove runs through the fixed plate, and the inside groove can accommodate the broaching tool piece of the stapler；The inside groove inner peripheral surface is provided with At least one set of pin shaft hole is disposed with pin shaft inside the pin shaft hole.

2. slight drag stapler according to claim 1, which is characterized in that the inside groove two-end part of the fixed plate Hole be less than the hole at position among the inside groove.

3. slight drag stapler according to claim 2, which is characterized in that the middle part of the inside groove of the fixed plate Position two sidewalls are provided with pin shaft hole, pin shaft are disposed in pin shaft hole, when the broaching tool piece is bent and translation acts, with the inside groove Intermediate position two sidewalls arrangement pin shaft carry out rolling friction.

4. slight drag stapler according to claim 1, which is characterized in that the slight drag stapler further includes a steering Gear, the tooth sector front end are provided with a torsional part, run through before and after the torsional part, and the broaching tool piece passes through the torsion Portion, torsional part inside two sidewalls are provided with pin shaft hole, are used to accommodate pin shaft, the broaching tool piece bending inside the pin shaft hole And when translation movement, rolling friction is carried out with two sidewalls setting pin shaft on the inside of the torsional part.

5. slight drag stapler according to claim 4, which is characterized in that the tooth sector bottom surface is provided with one turn To limiting slot, the fixed front edge of board top surface is provided with a limiting steering block, and the limiting steering block is arranged in the steering limit Inside the slot of position.

6. slight drag stapler according to claim 5, which is characterized in that the slight drag stapler further includes a joint Head pedestal, the ball and socket joint base bottom are provided with a translation limiting slot, and fixed plate rear end top surface is provided with translation limit Position block, the translation limited block are placed in inside the translation limiting slot.

7. slight drag stapler according to claim 3, which is characterized in that the fixed plate bottom is provided with cover plate, For being limited to the pin shaft being placed in inside the pin shaft hole.

8. slight drag stapler according to claim 3, which is characterized in that be provided at the fixed plate outer ledge to A few gap, is used to accommodate the hose of stapler rotary part.