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Target knife utilizing laser surface texture optimization

A technology of surface texture and laser phase change hardening, which is applied in the field of targeted knives, can solve problems such as improving the surface performance of the knife body, and achieve improved freezing and ablation effects, improved wear resistance and high temperature oxidation resistance, and friction Reduced effect

Inactive Publication Date: 2017-07-21
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology

Both of the above two patents did not consider improving the surface performance of the knife body to reduce the friction between it and organs, thereby reducing the pain of patients

Method used

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  • Target knife utilizing laser surface texture optimization
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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] Such as figure 1 As shown, a targeted knife using laser surface texture optimization, including a stainless steel targeting knife body 1, the surface of the targeted knife body has an optimized surface tissue layer 2 through laser phase transformation hardening or laser remelting, so that the surface of the knife body obtains an extremely Fine hardened tissue improves the wear resistance and high temperature oxidation resistance of the knife body surface, reduces the friction between the knife body and human tissue, improves the effect of freezing and ablation, thereby reducing the knife edge and reducing the patient's pain.

[0018] Laser phase transformation hardening is widely used in the field of material surface modification due to its high power density, high surface strengthening quality, small impact on the original during processing, par...

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Abstract

The invention relates to a target knife utilizing laser surface texture optimization. The target knife comprises a stainless steel target knife body. The surface of the target knife body is provided with optimized surface tissue obtained through laser phase transformation hardening or laser remelting, the superfine hardening tissue is obtained on the surface of the knife body, the knife body surface abrasion resistance and high temperature oxidation resistance are improved, and friction between the knife body and the human tissue is reduced. The stainless steel surface tissue optimization is achieved through laser phase changing hardening or laser remelting, the content is not changed, after laser surface texture hardening, the corrosion resistance, abrasion resistance and high temperature oxidation resistance of the stainless steel knife body surface are remarkably improved, when the knife body enters the human body and is pulled out from organ tissue, friction between the knife body and the human tissue is reduced, and a knife edge becomes smaller, and therefore pain of a patient is relieved.

Description

technical field [0001] The invention relates to a targeted knife, in particular to a targeted knife used for cryosurgery. Background technique [0002] Cryosurgery is an effective means to treat cancer, after years of development, it has been more and more widely used. The development of cryosurgery is inseparable from the progress of cryotherapy equipment. From the perspective of the development history of cryotherapy equipment, it has been developing in the direction of pursuing less trauma, better performance, and more convenient use. [0003] The targeted knife cryotherapy system has a low cooling temperature, and the formed ice ball has a clear boundary and a large size, which can be used for the treatment of large tumors; local anesthesia puncture treatment has short operation time, less trauma, less bleeding, and obvious advantages of minimally invasive; fast rewarming speed , It can realize rapid knife removal; the real-time monitoring system is convenient for temp...

Claims

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Application Information

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IPC IPC(8): A61B18/02C21D1/09C21D9/18
CPCA61B18/02A61B2018/00964C21D1/09C21D9/18
Inventor 王书文刘彩霞沈丽霞
Owner UNIV OF SHANGHAI FOR SCI & TECH
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