CN205268217U

CN205268217U - Operation stitching instrument

Info

Publication number: CN205268217U
Application number: CN201521077326.0U
Authority: CN
Inventors: 万建峰; 黄建设; 孙东明; 马博平
Original assignee: CHANGZHOU XIN NENG YUAN MEDICAL STAPLER Co Ltd
Current assignee: CHANGZHOU XIN NENG YUAN MEDICAL STAPLER Co Ltd
Priority date: 2015-12-22
Filing date: 2015-12-22
Publication date: 2016-06-01
Anticipated expiration: 2025-12-22

Abstract

The utility model relates to an operation stitching instrument, include: end effector, end effector include the drive beams of a plurality of range upon range of settings including an axle drive assembly, axle drive assembly, are in in the middle of stromatolithic a plurality of drive beams a drive beams and be central roof beam, and the distal end of central roof beam is equipped with the blade, are to incline to the distal end during cutting edge use of this blade. Be the incline direction of cutting edge, the displacement direction who cuts off the tissue with axle drive assembly when used is unanimous, is cutting off the during operation, the tissue (like the coat of the stomach etc. ) pushed down by the cutting edge, can play the effect of fixed tissue, avoid the tissue to move backward and influence the cutting. This cutting edge is the straight line, or the pitch arc, or the bottom is pitch arc, surplus portion for sharp. Wherein, the adoption bottom is pitch arc, surplus portion for the cutting edge of straight line, can avoid the cutting edge bottom because of there being the dead angle, and the problem of influence cutting efficiency. The bottom of cutting edge is the pitch arc, has avoided appearing the low -angle contained angle, influences the problem that cutting edge and tissue fully contacted.

Description

A kind of surgical stapler

Technical field

This utility model relates to field of surgical, specifically a kind of surgical stapler.

Background technology

Chinese patent literature CN101626731A discloses a kind of operation stitching device, comprising: define the nail bin groupware of tissue contacting surface; Define the anvil assembly of tissue contacting surface; And surgical buttress, it is releasably securable at least one in the tissue contacting surface of nail bin groupware and the tissue contacting surface of anvil assembly by least one anchor log. Providing a kind of load units, this load units includes: surgical buttress, and it is releasably securable to anvil assembly by least one anchor log and/or is fixed on the staple cartridge on anvil assembly; With driving assembly, it includes blade, and wherein, the motion of this distad position, driving assembly proximally position causes that blade cuts at least one anchor log and discharges each surgical buttress from described anvil assembly and/or nail bin groupware.

It is disadvantageous in that: the blade of the described blade of the cutting tissue that it adopts, overall curved (see the blade in Fig. 2 and 9 in document CN101626731A, or the blade in Figure 49), it is when cutting tissue, cause tissue displacement, and then have impact on the precision of operation.

Utility model content

The technical problems to be solved in the utility model is to provide cutting effect good surgical stapler when a kind of simple in construction, use.

This utility model provides a kind of surgical stapler, including: end effector, end effector includes axle and drives assembly, axle drives assembly to include the driving beam that multiple stacking is arranged, the multiple driving beams middle one being in lamination drive beam centered by beam, the far-end of center sill is provided with blade, tilts in far-end when the blade of this blade uses. The i.e. incline direction of blade, when driving assembly to use with axle, the direction of displacement of cut-out tissue is consistent, and when carrying out cutting off work, tissue (such as coat of the stomach etc.) is pressed by under blade, can play the effect of fixing human tissue, it is to avoid moves after tissue and affects cutting.

This blade linearly, or camber line; Or, the bottom of blade is that the remaining part of blade is straight line to far-end and the camber line extended below. Wherein, employing bottom is camber line, remaining part is the blade of straight line, can avoid because there is dead angle bottom blade, and the problem affecting cutting efficiency. The bottom of blade is camber line, it is to avoid low-angle angle occur, affects the problem that blade is fully contacted with tissue.

Technique scheme of the present utility model has the advantage that (1) surgical stapler of the present utility model in use compared to existing technology, the incline direction of blade, when driving assembly to use with axle, the direction of displacement of cut-out tissue is consistent, when carrying out cutting off work, tissue (such as coat of the stomach etc.) is pressed by under blade, the effect of fixing human tissue can be played, it is to avoid move after tissue and affect cutting. (2) bottom of blade is camber line, remaining part is straight line, it is to avoid low-angle angle occur, affects the problem that blade is fully contacted with tissue, so the surgical stapler of utility model is in use, cutting efficiency is higher.

Accompanying drawing explanation

In order to make content of the present utility model be more likely to be clearly understood, below according to specific embodiment and in conjunction with accompanying drawing, this utility model is described in further detail, wherein

Fig. 1 is the decomposition texture schematic diagram of the end effector of the surgical stapler of prior art;

Fig. 2 is the structural representation of the axle driving assembly of the surgical stapler in embodiment;

Fig. 3 is the another side structural representation that described axle drives assembly;

Fig. 4 is the partial enlarged drawing of the far-end of the center sill of described driving beam.

Detailed description of the invention

Embodiment 1

As Figure 1-Figure 4, the surgical stapler of the present embodiment includes: end effector 100, and end effector 100 is configured to disposable loading unit, and this disposable loading unit is configured to be connected with Handleset. End effector 100 includes axle and drives assembly 150, and axle drives assembly 150 operatively relevant to nail bin groupware 200 and anvil assembly 300, and axle drives assembly 150 to be slidably disposed between nail bin groupware 200 and anvil assembly 300.

The near-end 152b driving beam 152 is formed as a pair resilient engagement finger, and this resilient engagement finger is dimensioned and is configured to when end effector 100 is connected to Handleset and engages drive rod with installing or control bar.

The far-end 152a driving beam 152 is configured to the I-beam from its horizontal expansion, and the multiple driving beams 152 middle being in lamination drive beam centered by beam, and the far-end of center sill is provided with blade 156.

Axle drives assembly 150 to include the driving beam 152 that multiple stacking is arranged, and drives beam 1152 to have far-end 152a and near-end 152b. The multiple driving beams 152 middle one being in lamination drive beam centered by beam, and the far-end of center sill is provided with blade 156, tilts in far-end when the blade of this blade 156 uses.

The i.e. incline direction of blade, when driving assembly to use with axle, the direction of displacement of cut-out tissue is consistent, and when carrying out cutting off work, tissue (such as coat of the stomach etc.) is pressed by under blade, can play the effect of fixing human tissue, it is to avoid moves after tissue and affects cutting.

This blade linearly, or camber line.

Embodiment 2

On the basis of embodiment 1, there is following modification in the present embodiment:

The bottom of described blade is that the remaining part of blade is straight line to far-end and the camber line extended below. Employing bottom is camber line, remaining part is the blade of straight line, can avoid because there is dead angle bottom blade, and the problem affecting cutting efficiency. The bottom of blade is camber line, it is to avoid low-angle angle occur, affects the problem that blade is fully contacted with tissue.

Obviously, above-described embodiment is only for clearly demonstrating this utility model example, and is not the restriction to embodiment of the present utility model. For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description. Here without also cannot all of embodiment be given exhaustive. And these belong to apparent change or variation that spirit of the present utility model extended out still among protection domain of the present utility model.

Claims

1. a surgical stapler, including: end effector, end effector includes axle and drives assembly, axle drives assembly to include the driving beam that multiple stacking is arranged, the multiple driving beams middle one being in lamination drive beam centered by beam, the far-end of center sill is provided with blade, it is characterised in that: tilt in far-end when the blade of this blade uses.

2. surgical stapler according to claim 1, it is characterised in that: this blade linearly, or camber line.

3. surgical stapler according to claim 1, it is characterised in that: the bottom of blade is that the remaining part of blade is straight line to far-end and the camber line extended below.