CN102138814A

CN102138814A - Surgical stapling instrument

Info

Publication number: CN102138814A
Application number: CN 201010547390
Authority: CN
Inventors: 陈望东; 叶艳平
Original assignee: Touchstone International Medical Science Co Ltd
Current assignee: Suzhou Tianchen International Medical Technology Co Ltd
Priority date: 2010-11-17
Filing date: 2010-11-17
Publication date: 2011-08-03
Anticipated expiration: 2030-11-17
Also published as: CN102138814B

Abstract

The invention discloses a surgical stapling instrument, which comprises upper and lower jaws closable or openable with each other, wherein a sliding block is arranged in the concave inner part at the near end of the lower jaw; and the remote end of the sliding block is connected with a nail pushing mechanism and a knife pushing mechanism. The surgical stapling instrument is characterized in that: a safety mechanism is arranged between the lower jaw and the sliding block, and has a safety status and a release status; when the safety mechanism is in the safety status, the safety mechanism is connected to a part between the lower jaw and the sliding block and preventing the sliding block from moving along an axis of the lower jaw; and when the safety mechanism is in the release status, the lower jaw separates from the sliding block. The invention has the advantages that: the structure is simple, and the operation is effective; and the invention has good promotional value.

Description

The surgery sewing and cutting machine

Technical field

The present invention relates to a kind of surgery sewing and cutting machine, belong to technical field of medical instruments.

Background technology

The surgery sewing and cutting machine is widely used in being used in the surgical operation wound suture, interior tissue is sewed up and cutting, typical surgery sewing and cutting machine such as U.S. Pat 5129570 announcement, have and sew up and two functions of cutting, when carrying out wound suture, excess tissue is excised.Such surgery sewing and cutting machine generally comprises upper and lower two clamps, and the closed handle that is used for closed upper and lower clamp, be oppositely arranged on the nail anvil and the nail bin of clamp front end up and down, be located in the nail bin and ejector pin bar, pushing slice of nail and the cutting knife that can move relative to described nail bin simultaneously, and drive the push button that described pushing slice of nail and cutting knife move.Be disposed with suturing nail in the described nail bin, described pushing slice of nail is pushed suturing nail to nail anvil, and described cutting knife will cut off at the tissue between nail bin and the nail anvil.

In order to prevent to promote the maloperation that push button produces when clamp is also not closed up and down, the surgery sewing and cutting machine of prior art all can be provided with a kind of insurance institution.

U.S. Pat has disclosed a kind of insurance institution No. 5129570, and a safety block that has cutting knife passage and ejector pin bar passage is set at the middle part of apparatus, and shell fragment is set below cutting knife.When apparatus was shown in an open position (being that upper and lower two clamps are not closed), shell fragment was upspring cutting knife, made cutting knife can't pass through the cutting knife passage, played safety effect; After upper and lower two clamp closures of apparatus, nail bin compressing cutting knife top makes cutting knife overcome the elastic force of shell fragment and returns to state with the cutting knife channel alignment, and insurance is at this moment removed, and apparatus can be pulled the trigger use.

U.S. Pat has disclosed another kind of insurance institution No. 7055730, and a safety block that has push broach bar passage and ejector pin bar passage is set at the middle part of apparatus, and this safety block can rotate around apparatus under the torsion spring effect.When apparatus was shown in an open position (being that upper and lower two clamps are not closed), safety block twisted, and made ejector pin bar and push broach bar all can't pass through passage, played safety effect; After upper and lower two clamp closures of apparatus, nail bin compressing safety block make it overcome the elastic force of torsion spring and recover the normal position (be ejector pin bar and push broach bar respectively with its safety block on channel alignment), make ejector pin bar and push broach bar all can pass through safety block, at this moment insurance is removed, and apparatus can be pulled the trigger use.

Summary of the invention

The objective of the invention is to propose a kind of surgery sewing and cutting machine with insurance institution of simple structure.

Purpose of the present invention will be achieved by the following technical programs:

A kind of surgery sewing and cutting machine, comprise: can be mutually the closed or upper and lower clamp opened, the described concave inside of clamp down is provided with sliding shoe, the far-end of sliding shoe connects ejector pin mechanism and push broach mechanism, be provided with insurance institution between described clamp down and the sliding shoe, described insurance institution has safety position and release conditions, when described insurance institution is in safety position, described insurance institution is connected in down between clamp and the sliding shoe and limits the described sliding shoe edge axial-movement of clamp down, when described insurance institution was in release conditions, described clamp down and sliding shoe broke away from.

Further, described insurance institution is shell fragment and the groove of relative set on sliding shoe that is arranged on down the clamp inner surface, and when described shell fragment was in safety position, described shell fragment was stuck in the described groove.

Further, described shell fragment is welded on the inner surface of described clamp down.

Further, described shell fragment is stamped to form for the surface of following clamp.

Further, be the acute angle setting between the inner surface of described shell fragment and following clamp.

Further, the trigger mechanism of described insurance institution is last clamp.

Again further, the trigger mechanism of described insurance institution is the sidewall of last clamp.

Beneficial effect of the present invention is mainly reflected in: simple in structure, efficient in operation has excellent popularization and is worth.

Description of drawings

Fig. 1 is the structural representation of following clamp, and this moment, upper and lower clamp was not closed.

Fig. 2 is along the cutaway view of A-A among Fig. 1.

Fig. 3 is the structural representation of sliding shoe among Fig. 1, this at present clamp only show shell fragment.

Fig. 4 is the structural representation of upper and lower clamp, and this moment, upper and lower clamp was closed.

Fig. 5 is along the cutaway view of B-B among Fig. 4.

Wherein:

2 times clamp 3 sliding shoes of clamp on 1

11 sidewalls, 21 shell fragments, 31 grooves

The specific embodiment

As Figure 1-3, the invention provides a kind of insurance institution of surgery sewing and cutting machine.Consistent with prior art, described surgery seaming and cutting mechanism comprises cabinet, can be closed mutually or the upper and lower clamp opened, and the far-end of last clamp 1 is provided with nail anvil, and the far-end of following clamp 2 is provided with nail bin.Certainly, the position of clamp can exchange up and down, just the present invention is in order to express clearly so definition.The concave inside of the near-end of following clamp 2 is provided with sliding shoe 3, and described sliding shoe far-end is provided with ejector pin bar and push broach bar, is respectively applied for the percussion suturing nail and cuts and organizes.During use, tissue is placed between nail anvil and the nail bin, involutory then upper and lower clamp, closed and locked pincers make upper and lower clamp grip tissue, promote the percussion push button then, the stitching that can implement to organize and cutting.

An important characteristic of the present invention is: be provided with insurance institution between described clamp 2 down and the sliding shoe 3, described insurance institution has safety position and release conditions, when described insurance institution was in safety position, described insurance institution was connected in down between clamp 2 and the sliding shoe 3 and limits the described sliding shoe 3 edges axial-movement of clamp 2 down; When described insurance institution was in release conditions, described clamp 2 down broke away from sliding shoe 3, and this moment, sliding shoe can be along the axial-movement of following clamp 2.

Further, described insurance institution is arranged on down the shell fragment 21 of clamp 2 inner surfacies and the relative set groove 31 on sliding shoe 3 surfaces, when described shell fragment 21 is in safety position, when promptly being acute angle between the inner surface of this shell fragment 21 and following clamp 2 and being provided with, described shell fragment 21 is arranged in the described groove 31.Owing to so be provided with, make and sliding shoe 3 and following clamp 2 relative fixed on axial location play safety effect.Described shell fragment 21 is welded on the inner surface of described clamp 2 down, also can be stamped to form for the surface of following clamp 2.Such design cost is lower, processes also convenient.

Further, the trigger mechanism of described insurance institution is the sidewall of last clamp.As shown in Figure 4 and Figure 5, after upper and lower two clamps, 1,2 closures, 11 pairs of described shell fragments 21 of the sidewall of last clamp 1 produce a thrust, make shell fragment 21 distortion and finally parallel with the inner surface of described clamp down.At this moment, this shell fragment 21 promptly breaks away from sliding shoe 3, and sliding shoe 3 just can move along the axis of following clamp.

During operation, tissue is placed on, the working region of following clamp, it is nail bin, between nail anvil, closed apparatus, the near-end of clamp snaps in down in the clamp near-end on this moment, the shell fragment 21 of extruding insurance institution, make the groove 31 on its disengaging sliding shoe, this moment insurance is removed, and sliding shoe 3 can move forward under the drive of percussion push button, and then promotes the ejector pin bar and the push broach bar moves forward, then nail is pushed out of nail bin and hammers into tissue, cutting knife with tissue dissection, until the nail in the nail bin is all come out by percussion, retracts sliding shoe 3 initial position of apparatus near-end at last in 2 parallel sutures.At last, push release-push, open apparatus, operation is finished.

In this preferred embodiment, the trigger mechanism of described insurance institution is the sidewall of last clamp, can certainly be its other position, for example the bottom.As long as when putting down the clamp closure, can oppress the shell fragment distortion and get final product.

The present invention still has numerous embodiments, and all employing equivalents or equivalent transformation and all technical schemes of forming all drop within protection scope of the present invention.

Claims

1. surgery sewing and cutting machine, comprise: can be mutually closed or open on, following clamp, the described concave inside of clamp near-end down is provided with sliding shoe, the far-end of sliding shoe connects ejector pin mechanism and push broach mechanism, it is characterized in that: be provided with insurance institution between described clamp down and the sliding shoe, described insurance institution has safety position and release conditions, when described insurance institution is in safety position, described insurance institution is connected in down between clamp and the sliding shoe and limits the described sliding shoe edge axial-movement of clamp down, when described insurance institution was in release conditions, described clamp down and sliding shoe broke away from.

2. surgery sewing and cutting machine according to claim 1, it is characterized in that: described insurance institution is shell fragment and the groove of relative set on sliding shoe that is arranged on down the clamp inner surface, when described shell fragment was in safety position, described shell fragment was stuck in the described groove.

3. surgery sewing and cutting machine according to claim 1 is characterized in that: described shell fragment is welded on the inner surface of described clamp down.

4. surgery sewing and cutting machine according to claim 1 is characterized in that: described shell fragment is that the surface of clamp down is stamped to form.

5. surgery sewing and cutting machine according to claim 1 is characterized in that: be the acute angle setting between the inner surface of described shell fragment and following clamp.

6. surgery sewing and cutting machine according to claim 1 is characterized in that: the trigger mechanism of described insurance institution is last clamp.

7. according to claim 1 or 6 described any one surgery sewing and cutting machines, it is characterized in that: the trigger mechanism of described insurance institution is the sidewall of last clamp.