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Stapler with cutting mechanism

A cutting mechanism and stapler technology, applied in the field of medical devices, can solve problems such as easy collapse, insufficient anvil strength, and inability to completely cut tissues and staples

Pending Publication Date: 2018-08-17
盈甲医疗器械制造(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a stapler with a cutting mechanism to at least solve the technical problem in the prior art that the anvil is easily collapsed due to insufficient strength of the knife anvil, so that the tissues and staples cannot be completely cut off

Method used

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Examples

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Embodiment 1

[0023] like figure 1 As shown, the embodiment of the present invention provides a stapler with a cutting mechanism A, the cutting mechanism A includes a combined anvil 1 with a hollow structure, such as figure 2 As shown, the combined anvil 1 includes a first layer of anvil 11 , a hollow layer 12 and a secondary support 13 . Optionally, the above-mentioned first-layer anvil 11 is a thermosetting polymer material, and / or the above-mentioned secondary support 13 is a stainless steel metal piece. The above-mentioned hollow layer 12 can make the cutting knife suddenly lose its support after breaking through the first layer of thermosetting polymer material support, so as to obtain an acceleration and rush to the second layer of stainless steel support.

[0024] like image 3 and Figure 4 As shown, the above-mentioned cutting mechanism also includes a cutting knife 2 , a nail abutment component 3 , a nail pusher 4 , a nail cartridge 5 , a head shell 6 and a firing rod 7 . The...

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PUM

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Abstract

The invention provides a stapler with a cutting mechanism. The cutting mechanism comprises a combined knife anvil with a hollow structure, the combined knife anvil comprises a first layer of knife anvil, a hollow layer and a secondary supporting member. According to the stapler, secondary cutting is performed on a thick tissue which is not cut and a suturing nail, after percussion is completed, the supporting surface of the secondary supporting member is cut by a cutting edge of a cutter of the stapler, when cutting of the tissue and the suturing nail is not completed due to the collapsing ofthe knife anvil, and secondary cutting of the tissue and the suturing nail is achieved through the cutter by cutting the supporting surface of the secondary supporting member, so that it is ensured that the tissue and the suturing nail are completely cut. The stapler with the cutting mechanism has good cutting performance.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a stapler with a cutting mechanism. Background technique [0002] The cutting mechanism of the existing stapler mainly uses an anvil as a single support member. When the stapler is cutting, the anvil is used as a support to realize cutting of tissues and staples by the cutter. The main defect of this structure is that: the anastomat needs to cut off the knife anvil during the percussion and suture process. Since the cutting edge is easily damaged, the knife anvil can only be made of weaker plastic materials, and the staples are metal materials with relatively high strength. high. The suture staple is a metal material with high hardness, and the anvil is made of plastic material with weak strength. When the cutting knife cuts thicker tissues and high-strength suture staples, it is easy to collapse due to insufficient strength of the anvil, which leads to the inability of the ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/072A61B17/3209
CPCA61B17/07207A61B17/3209A61B2017/07285
Inventor 朱德锦刘佳王东
Owner 盈甲医疗器械制造(上海)有限公司
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