Patent · US Active

Use of copper-chromium alloy in biopsy puncture needle

US11661643B2 · kind B2 · utility

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2Claims

0Family size

Assignee

SHANGHAI RUIZHIKANG MEDICAL TECHNOLOGY CO., LTD. · CN

Inventors

Xiaohong Chen · Shanghai, CN
Honglei ZHOU · Shanghai, CN
Shaoli FU · Shanghai, CN
Fengcang MA · Shanghai, CN
Guosen SHAO · Shanghai, CN
Haochen WU · Shanghai, CN

Key dates

Filing date	Jul 7, 2022
Grant date	May 30, 2023
Priority date	—
Expiry date	Jul 7, 2042

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B10/0233
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The present disclosure discloses use of a copper-chromium alloy in a medical biopsy puncture needle. The copper-chromium alloy used as a material for a needle core and/or needle tube of the puncture needle. The copper-chromium alloy includes the following components by mass: 10≤Cr≤20, 0.04≤Zr≤0.1, and the balance of Cu. According to the present disclosure, a copper alloy with designed components is obtained by combining a diamagnetic material Cu with paramagnetic Cr and Zr, and compared with existing medical stainless steel and titanium alloy, the copper alloy has greatly reduced magnetic susceptibility, and specifically, the artifact area and volume are also significantly reduced. In addition, the blank of use of the copper alloy in medical biopsy paracentesis is filled.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.