Surgical instrument prepared by utilizing powder metallurgy and production process

A surgical instrument, powder metallurgy technology, applied in metal processing equipment, transportation and packaging, etc., to achieve the effect of improving physical and chemical properties, simplifying production processes, and improving production efficiency

Active Publication Date: 2019-02-22
山东欧诺机电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, some materials and complex parts that cannot be prepared by traditional casting methods and machining methods can also be manufactured by powder metallurgy technology, so they have attracted much attention from the industry. However, how to use powder metallurgy methods to prepare surgical instruments is still in a blank state. There is no similar technical solution in China, and more importantly, due to the particularity of surgical instruments, there is a lack of corresponding powder metallurgy materials in the prior art to meet the preparation conditions, which is also one of the problems that the prior art is difficult to solve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A surgical instrument prepared by powder metallurgy and its production process, wherein the elemental composition of the metal powder is as follows by weight percentage:

[0036] C 0.8%, Nb 1.82%, Cr 13.8%, Ni 0.14%, Mn 0.24%, Si 0.28%, S 0.01%, Fe balance;

[0037] The metal powders are all high-purity powders, purchased from Jiangsu Tianyi Superfine Powder Co., Ltd.;

[0038]The processed surgical instruments are surgical scissors;

[0039] The specific steps of its production process are as follows:

[0040] (1) Weigh the metal powder according to the component distribution ratio, and prepare the above powder into a solid alloy powder with a particle size of 2-15 μm by water atomization method, then add 5 to 20 wt% organic binder to the above alloy powder, and stir Uniformly made feed with rheological properties;

[0041] (2) Injection molding: use the injection machine equipment to pour the feed into the inverted funnel, enter the injection gun and heat it to 120...

Embodiment 2

[0050] A surgical instrument prepared by powder metallurgy and its production process, wherein the elemental composition of the metal powder is as follows by weight percentage:

[0051] C 0.5%, Nb 1.5%, Cr 12-14%, Ni≤0.75%, Mn≤1%, Si≤1%, S≤0.03%, Fe balance;

[0052] The metal powders are all high-purity powders, purchased from Jiangsu Tianyi Superfine Powder Co., Ltd.;

[0053] The processed surgical instruments are surgical scissors;

[0054] The specific steps of its production process are as follows:

[0055] (1) Weigh the metal powder according to the component distribution ratio, and prepare the above powder into a solid alloy powder with a particle size of 2-15 μm by water atomization method, then add 5 to 20 wt% organic binder to the above alloy powder, and stir Uniformly made feed with rheological properties;

[0056] (2) Injection molding: use the injection machine equipment to pour the feed into the inverted funnel, enter the injection gun and heat it to 120-150°...

Embodiment 3

[0065] A surgical instrument prepared by powder metallurgy and its production process, wherein the elemental composition of the metal powder is as follows by weight percentage:

[0066] C 0.65%, Nb1.9%, Cr 12-14%, Ni≤0.75%, Mn≤1%, Si≤1%, S≤0.03%, Fe balance;

[0067] The processed surgical instruments are needle-holding forceps;

[0068] The metal powders are all high-purity powders, purchased from Jiangsu Tianyi Superfine Powder Co., Ltd.;

[0069] The specific steps of its production process are as follows:

[0070] (1) Weigh the metal powder according to the component distribution ratio, and prepare the above powder into a solid alloy powder with a particle size of 2-15 μm by water atomization method, then add 5 to 20 wt% organic binder to the above alloy powder, and stir Uniformly made feed with rheological properties;

[0071] (2) Injection molding: use the injection machine equipment to pour the feed into the inverted funnel, enter the injection gun and heat it to 120...

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Abstract

The invention relates to the field of metal material and medical equipment machining, in particular to a surgical instrument prepared by utilizing powder metallurgy and a production process. The produced surgical instrument is mainly a frequently-used steel medical instrument such as a surgical scissors, a powder metallurgy mode is adopted for the first time in the field to prepare the surgical instrument, a brand-new base material ratio and the corresponding production process are provided, the blank of the field is filled up, a mode of using traditional universally-used stainless steel profile to machine and produce the surgical instrument is thoroughly changed, the physical and chemical properties of a surgical instrument material are improved, the production efficiency is improved by ten times or more, resources are saved, and the effects of being efficient and environment-friendly are achieved.

Description

technical field [0001] The invention relates to the field of processing metal materials and medical instruments, in particular to a surgical instrument prepared by powder metallurgy and a production process. Background technique [0002] Surgical instruments are indispensable basic tools for medical operations, and they have high quality requirements for clinical application and a large market demand. The processing and production of surgical instruments has been using traditional smelting and forming general-purpose stainless steel materials suitable for medical requirements. More than 40 traditional mechanical and manual processes are used to complete the production. The production and processing procedures are cumbersome, the production efficiency is low, and the product quality varies. [0003] Powder metallurgy is a process technology for producing metal powder or using metal powder (or a mixture of metal powder and non-metal powder) as raw material, forming and sinteri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/22B22F3/10B22F1/00B22F3/24B22F5/00C22C38/02C22C38/04C22C38/48
CPCC22C38/002C22C38/02C22C38/04C22C38/48B22F3/1017B22F3/225B22F3/24B22F5/00B22F2003/248B22F1/10
Inventor 张旭
Owner 山东欧诺机电有限公司
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