CN101849851B

CN101849851B - Cutting stitching instrument

Info

Publication number: CN101849851B
Application number: CN 201010197135
Authority: CN
Inventors: 陈望东; 舒拓
Original assignee: Touchstone International Medical Science Co Ltd
Current assignee: Touchstone International Medical Science Co Ltd
Priority date: 2010-06-10
Filing date: 2010-06-10
Publication date: 2012-09-19
Anticipated expiration: 2030-06-10
Also published as: CN101849851A

Abstract

The invention provides a cutting stitching instrument, which comprises an upper forceps holder, a lower forceps holder, a nail bin, a nail anvil, a nail pushing sheet, a cutter, a cocking sheet and a cutter pushing rod, wherein the cocking sheet and the cutter pushing rod drive the nail pushing sheet and the cutter to move; suturing nails are arranged in the nail bin; the cocking sheet drives the nail pushing sheet to push the suturing nails to the nail anvil; the cutter cuts off tissues between the nail bin and the nail anvil in the moving process; the front end of the cocking sheet is a wedge-shaped sheet which drives the nail pushing sheet to move, and the rear end of the cocking sheet is patched with a slide block; the slide block comprises a through hole; the cocking sheet comprises a waist-shaped groove the major axis of which is vertical to the bottom surface of the cocking sheet; and a pin passes through the through hole and the waist-shaped groove. The invention has the beneficial effect that the cutting stitching instrument is convenient to use, the frictional force between the cocking sheet and the lower forceps holder is greatly lowered, a doctor only needs to apply smaller driving force to operate the cutting stitching instrument, and the cutting stitching instrument can cock more smoothly.

Description

Stapler

Technical field

The present invention relates to the stapler that a kind of surgical operation is used, belong to technical field of medical instruments.

Background technology

Surgical incision stapler is widely used in being used in the surgical operation wound suture, interior tissue is sewed up and cutting; Typical surgical incision stapler such as 5065929 announcements of U.S. Pat; Have and sew up and two functions of cutting, when carrying out wound suture, excess tissue is excised.As shown in Figure 1; Such stapler generally comprises upper and

lower clamp

4,5; The closed handle 6 that is used for closed upper and lower clamp is oppositely arranged on the nail anvil 7 and nail bin 8 of clamp front end up and down, is located in the nail bin 8 and the pushing slice of nail and the cutting knife that can move relative to said nail bin simultaneously; And drive percussion sheet 2 and the push broach bar that pushing slice of nail and cutting knife move; Be disposed with suturing nail in the said nail bin, said pushing slice of nail is pushed suturing nail to nail anvil, and said cutting knife will cut off at the tissue between nail bin and the nail anvil.

In the prior art; The bottom surface of percussion sheet is resisted against down on the inner bottom surface of clamp; Can produce slip owing to pulling the trigger sheet with respect to following clamp, promptly both bottom surfaces can rub in the process that the percussion sheet slides in generation, so the doctor needs bigger driving force order about the slip of percussion sheet when operating.In addition, when upper and

lower clamp

4,5 was closed, upper and

lower clamp

4,5 all can produce certain bending, and the frictional force of pulling the trigger like this between sheet and the following clamp can be bigger.

Summary of the invention

The objective of the invention is to solve above-mentioned technical problem, a kind of less stapler of friction in the process of pulling the trigger is provided.

The object of the invention is realized through following technical scheme:

A kind of stapler comprises upper and lower clamp, is oppositely arranged on the nail bin and the nail anvil of upper and lower clamp front end; The pushing slice of nail and the cutting knife that can move relative to said nail bin, and drive percussion sheet and the push broach bar that said pushing slice of nail and cutting knife move, be disposed with suturing nail in the said nail bin; Said percussion sheet drives said pushing slice of nail and pushes suturing nail to nail anvil; Said cutting knife will cut off at the tissue between nail bin and the nail anvil in the process that it moves, and the front end of said percussion sheet is for driving the wedged plate that said pushing slice of nail moves, and the rear end of said percussion sheet and a slide block connect; Said slide block comprises a through hole; Said percussion sheet comprises a waist type groove, and the major diameter of said waist type groove has a pin to pass said through hole and waist type groove perpendicular to the bottom surface of percussion sheet.

Further, the distance of clamp inner bottom surface arrived the distance of clamp inner bottom surface down greater than the bottom surface of said slide block under the bottom surface of said percussion sheet was arrived.

Beneficial effect of the present invention is mainly reflected in: instrumentation is simple, and the frictional force between percussion sheet and the following clamp reduces greatly, only needs small driving force to get final product when the doctor operates, and makes the percussion of this apparatus more smooth and easy.

Description of drawings

Below in conjunction with accompanying drawing technical scheme of the present invention is described further:

Fig. 1: the front view of prior art stapler.

Fig. 2: the syndeton sketch map of the slide block of stapler of the present invention and percussion sheet.

Fig. 3: the syndeton cutaway view of the slide block of stapler of the present invention and percussion sheet.

Fig. 4: the front view of clamp down of the present invention.

Wherein:

1 slide block, 11 through holes, 12 bottom surfaces

2 percussion sheets, 21 waist type grooves, 22 bottom surfaces

5 times clamps of clamp on 3 pins 4

51 inner bottom surfaces, 6 closed handle, 7 nail anvils

8 nail bins

The specific embodiment

The present invention has disclosed a kind of surgical incision stapler, and is as shown in Figure 1, consistent with prior art, comprises that 4,5 and pivots of upper and lower clamp are arranged on down the closed handle 6 on the clamp 5.The described front end of going up clamp 4 is provided with nail anvil 7, and the front end of following clamp 5 is oppositely arranged nail bin 8.Described closed handle 6 can be moved between open position and make position, and when closed handle 6 was shown in an open position, upper and

lower clamp

4,5 was in the position of opening relatively; When closed handle 6 was in the close position, upper and

lower clamp

4,5 was in sufficiently closed position.When upper and

lower clamp

4,5 adequate closures, owing to be merely two junction points contacts, therefore upper and

lower clamp

4,5 can produce certain bending.

The same with prior art; Said stapler also comprises the pushing slice of nail and the cutting knife that can move relative to said nail bin 8; And drive the percussion sheet 2 and push broach bar that said pushing slice of nail and cutting knife move; Be disposed with suturing nail in the said nail bin 8, said percussion sheet 2 drives said pushing slice of nail and pushes suturing nail to nail anvil 7, and said cutting knife will cut off at the tissue between nail bin 8 and the nail anvil 7 in the process that it moves.

Extremely shown in Figure 4 in conjunction with Fig. 2; The front end of said percussion sheet 2 is for driving the wedged plate that said pushing slice of nail moves, and the rear end of said percussion sheet 2 and a slide block 1 connect, and said slide block 1 comprises a through hole 11; Said percussion sheet 2 comprises a waist type groove 21, has a pin 3 to pass said through hole 11 and waist type groove 21.Because the major diameter of said waist type groove 21 is perpendicular to the bottom surface 22 of percussion sheet 2; Therefore when upper and

lower clamp

4,5 closures; Pin 3 can move in waist type groove 21; Final result is that percussion sheet 2 can have certain string moving with respect to slide block 1, the exposure level between the bottom surface 22 that has reduced percussion sheet 2 and the inner bottom surface 51 of play clamp 5, and then reduced and pulled the trigger sheet 2 in the process of slip and the frictional force between the following clamp 5.And since minor axis and the through hole 11 of waist type groove 21 and sell 3 diameter about equally therefore can not have influence on slide block 1 and drive said percussion sheet 2 slips.

Certainly, opposite design: promptly pull the trigger a through hole is set on the sheet 2, and waist type groove is set on slide block 1, belong to equivalent arrangements of the present invention, equally within protection scope of the present invention.

Further, the present invention reduces friction for bigger effect ground, and the distance of the inner bottom surface 51 of clamp 5 arrived the distance of the inner bottom surface 51 of clamp 5 down greater than the bottom surface 12 of said slide block 1 under the bottom surface 22 of said percussion sheet 2 was arrived.Promptly as shown in Figure 3; Between the bottom surface 22 of percussion sheet 2 and the bottom surface 12 of slide block 1 individual height difference H is arranged; Even like this when the inner bottom surface 51 of the bottom surface of slide block 1 12 and play clamp 5 produces friction, the bottom surface 22 of said percussion sheet 2 and the inner bottom surface 51 of following clamp 5 be a segment distance in addition also.Like this, just can reduce fricative probability more.

The present invention still has multiple concrete embodiment, and all employings are equal to replacement or equivalent transformation and all technical schemes of forming all drop within the scope of requirement protection of the present invention.

Claims

1. a stapler comprises upper and lower clamp, is oppositely arranged on the nail bin and the nail anvil of upper and lower clamp front end; The pushing slice of nail and the cutting knife that can move relative to said nail bin, and drive percussion sheet and the push broach bar that said pushing slice of nail and cutting knife move, be disposed with suturing nail in the said nail bin; Said percussion sheet drives said pushing slice of nail and pushes suturing nail to nail anvil; Said cutting knife will cut off at the tissue between nail bin and the nail anvil in the process that it moves, and it is characterized in that: the front end of said percussion sheet is for driving the wedged plate that said pushing slice of nail moves, and the rear end of said percussion sheet and a slide block connect; Said slide block comprises a through hole; Said percussion sheet comprises a waist type groove, and the major diameter of said waist type groove has a pin to pass said through hole and waist type groove perpendicular to the bottom surface of percussion sheet; Said pin can move in waist type groove, and the minor axis of waist type groove and the diameter of through hole and pin are about equally.

2. stapler according to claim 1 is characterized in that: the distance of clamp inner bottom surface arrived the distance of clamp inner bottom surface down greater than the bottom surface of said slide block under the bottom surface of said percussion sheet was arrived.