CN100486528C

CN100486528C - Rotary cutter of binding instrument for surgery

Info

Publication number: CN100486528C
Application number: CNB200710182261XA
Authority: CN
Inventors: 陈望东; 陈权; 林江; 陆明耀; 印卫忠
Original assignee: Suzhou Tianchen International Medical Technology Co Ltd
Current assignee: Suzhou Tianchen International Medical Technology Co Ltd
Priority date: 2005-07-08
Filing date: 2005-07-08
Publication date: 2009-05-13
Anticipated expiration: 2025-07-08
Also published as: CN101152099A

Abstract

The present invention relates to a rotary cutter for a surgical binding instrument, which comprises a nail box, a nail pusher, a loop-shaped cutter, a nail pushing column, a nail cylinder and a line-pulling turning sleeve module. A feeding device for the loop-shaped cutter is a rotary feeding device, which is formed by the nail box, the nail pusher, the loop-shaped cutter, the nail cylinder and the line-pulling turning sleeve module; the inner of the nail box is provided with an anti-expansion pipe, and a step-shaped round tubular nail pusher is arranged between the anti-expansion pipe and an inner wall of the nail cylinder, which matches the nail cylinder inner wall shape; both a front end of the nail cylinder and a front end of the nail pusher are a cavity matching the loop-shaped cutter that is covered on the anti-expansion pipe and is positioned in the cavity; the front end circumferential edge of the nail cylinder and the nail pusher is connected and touched with the loop-shaped nail box; the loop-shaped cutter is connected with the nail pusher and the anti-expansion through the turning sleeve module. The present invention effectively reduces resistance of cutting a tissue and reduces tissue pulling cuts caused by cutting, which is characterized by cutting the tissue safely and reliably, and reducing a binding force needed by an operation.

Description

A kind of rotary cutter of binding device for surgery

Technical field

The present invention is that application number is 200510038253.9, and the applying date is 2005.07.08, and name is called the dividing an application of rotary cutter of binding device for surgery, relates to a kind of cutter head, relates in particular to a kind of rotary cutter of binding device for surgery, belongs to technical field of medical instruments.

Background technology

The stitching of surgical operation wound surface, the general means such as manual needlework are sewed up, gluing, slide fastener, Binding Instrument that adopt, wherein Binding Instrument is as operating wound surface suture instrument, more and more adopted by surgical operation, the cutter head of the binding device for surgery of prior art is in to wound face feeding bookbinding, its ring-like cutting knife is a straight-line feed, not only the surgeon need apply sizable strength and finish cutting, and cause the unnecessary cutting tissue of wound face unclean easily, cause actual bodily harm for the person of undergoing surgery.For this reason, on the cutter anvil, done a lot of improvement abroad mostly, but as ring-like amputation knife anvil, or on the cutter anvil, add the platform level; Also some improves on cutter, as ring-like blade being designed to zigzag at interval.But in the utilization of reality, all can not solve the unclean problem of unnecessary cutting tissue of the excessive and wound face of the application of force at all.

Summary of the invention

Purpose of the present invention is exactly in order to solve the above-mentioned problems in the prior art, and a kind of rotary cutter of binding device for surgery is provided.

Purpose of the present invention is achieved through the following technical solutions:

A kind of rotary cutter of binding device for surgery, it includes nail bin, pushing slice of nail, ring-like cutting knife, ejector pin post, nail tube, also include rotating member, wherein: described rotating member is that line draws the rotation set assembly, and the ring-like cutting knife feed arrangement that nail bin, pushing slice of nail, ring-like cutting knife, nail tube, rotation set assembly constitute is a swivel feeding device; The nail tube is that an inner chamber is step-like round tubular body, be provided with the pipe that only rises in it, between only rise pipe and nail tin inwall, be provided with and follow closely the step-like round tubular body pushing slice of nail that an inner wall shape is complementary, following closely the front end of tube with pushing slice of nail is the cavity that is complementary with ring-like cutting knife, ring-like cutting knife is enclosed within and is arranged in this cavity on the pipe that only rises, the nail tube is connected with annular nail bin respectively with the nose circle circumferential edges of pushing slice of nail and touches, and ring-like cutting knife is connected with the pipe that only rises with pushing slice of nail by the rotation set assembly.

The rotary cutter of above-mentioned a kind of binding device for surgery, wherein: described line draws the rotation set assembly to include rotation set, rope lock, stay cord, torsion spring, rotation set is enclosed within the pipe that only rises and upward fixedly is located at ring-like cutting knife outer bottom, rotation set top is connected by torsion spring with the pipe outer wall that only rises, the rotation set bottom is with stay cord, one end and the rotation set bottom of stay cord are fixed, and it is fixing with the rope lock that the other end passes the ejector pin tube, and pushing slice of nail front end cavity inner bottom part is provided with the bottom of linking up with rotation set and articulates.

The outstanding substantive distinguishing features and the obvious improvement of technical solution of the present invention is mainly reflected in:

By above-mentioned literal and in conjunction with the accompanying drawings as can be seen, adopt the present invention after ring-like cutting knife in the process of straight cuts, be subjected to the effect of rotating member and produce the mode of swivel feeding.Its advantage is to realize the rotation cutting function, effectively reduces the resistance that cuts off tissue, reduces because of what cut-out caused and organizes tensile wound, and safety and reliability ground guarantees to cut off tissue, reduces the bookbinding power of performing the operation required.

Description of drawings

Purpose of the present invention, advantage and characteristics will illustrate by the non-limitative illustration of following preferred embodiment and explain.These embodiment only are the prominent examples of using technical solution of the present invention, and all technical schemes of taking to be equal to replacement or equivalent transformation and forming all drop within the scope of protection of present invention.In the middle of these accompanying drawings,

Fig. 1 is the invention process sketch map.

The implication of each Reference numeral is as follows among the figure:

Sequence number	Refer to	Sequence number	Refer to
Sequence number	Refer to	Sequence number	Refer to	1	Nail bin	2	Pushing slice of nail
3	Ring-like cutting knife	4	Barb	1	Nail bin	2	Pushing slice of nail
3	Ring-like cutting knife	4	Barb	5	The nail tube	6	Pipe only rises

7	Rotation set	8	The rope lock
7	Rotation set	8	The rope lock	9	Stay cord	10	Torsion spring

The specific embodiment

The rotary cutter of a kind of binding device for surgery as shown in Figure 1, it includes nail bin 1, pushing slice of nail 2, ring-like cutting knife 3, ejector pin post, nail tube, also include rotating member, it is characterized in that: described rotating member is that line draws the rotation set assembly, and ring-like cutting knife 3 feed arrangements that nail bin 1, pushing slice of nail 2, ring-like cutting knife 3, nail tube, rotation set assembly constitute are swivel feeding device; The nail tube is that an inner chamber is step-like round tubular body, be provided with the pipe that only rises in it, between only rise pipe and nail tin inwall, be provided with and follow closely the step-like round tubular body pushing slice of nail 2 that an inner wall shape is complementary, following closely the front end of tube with pushing slice of nail 2 is the cavity that is complementary with ring-like cutting knife 3, ring-like cutting knife 3 is enclosed within and is arranged in this cavity on the pipe that only rises, the nail tube is connected with annular nail bin 1 respectively with the nose circle circumferential edges of pushing slice of nail 2 and touches, and ring-like cutting knife 3 is connected with the pipe that only rises with pushing slice of nail 2 by the rotation set assembly.

Further, described rotation set assembly includes rotation set 7, rope lock 8, stay cord 9, torsion spring 10, rotation set 7 is enclosed within on the pipe 6 that only rises and fixedly is located at ring-like cutting knife 3 outer bottoms, rotation set 7 tops are connected by torsion spring with pipe 6 outer walls that only rise, rotation set 7 bottoms are with stay cord 9, one end of stay cord 9 and rotation set 7 bottoms are fixed, and the other end passes nail tube 5 and rope lock 8 is fixing, and the bottom that pushing slice of nail 2 front end cavity inner bottom parts are provided with hook 4 and rotation set 7 articulates.

When pushing slice of nail 2 is subjected to forward a displacement, will drive ring-like cutting knife 3 and travel forward, simultaneously,, drive rotation set 7 and 3 rotations of ring-like cutting knife because rope one end fixes, and is looped around rotation set 7 peripheries.After bookbinding finished, ring-like cutting knife 3 and rotation set 7 were withdrawn under the effect of the barb 4 of pushing slice of nail 2 in the nail tube 5, simultaneously, in the effect turning down of torsion spring 10, made rope return to original state.

Claims

1, a kind of rotary cutter of binding device for surgery, it includes nail bin, pushing slice of nail, annular cutting knife, ejector pin post, nail tube, also include rotating member, it is characterized in that: described rotating member is that line draws the rotation set assembly, and the annular cutting knife feed arrangement that nail bin, pushing slice of nail, annular cutting knife, nail tube, line draw the rotation set assembly to constitute is a swivel feeding device; The nail tube is that an inner chamber is step-like round tubular body, be provided with the pipe that only rises in it, between only rise pipe and nail tin inwall, be provided with and follow closely the step-like round tubular body pushing slice of nail that an inner wall shape is complementary, the nail tube is the cavity that is complementary with annular cutting knife with the top of pushing slice of nail, the annular cutting knife is enclosed within the pipe that only rises and goes up and be located in this cavity, the upper circumferential edge of nail tube is connected with annular nail bin respectively with the upper circumferential edge of pushing slice of nail and touches, the annular cutting knife draws the rotation set assembly to come to be connected with the pipe that only rises with pushing slice of nail by line, its center line draws the rotation set assembly to include rotation set, the rope lock, stay cord, torsion spring, rotation set is enclosed within the bottom outside that annular cutting knife was gone up and fixedly be located to the pipe that only rises, rotation set top is connected by torsion spring with the pipe outer wall that only rises, the rotation set bottom is with stay cord, one end and the rotation set bottom of stay cord are fixed, the other end passes the nail tube and the rope lock is fixing, and the bottom that pushing slice of nail upper chamber inner bottom part is provided with hook and rotation set articulates.