The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 06, 2020
Filed:
Jun. 27, 2014
Shanghai Jiao Tong University, Shanghai, CN;
Shangdong Zhongbaokang Medical Devices Co., Ltd, Zibo, Shandong, CN;
Guangyin Yuan, Shanghai, CN;
Wenjiang Ding, Shanghai, CN;
SHANGHAI JIAO TONG UNIVERSITY, Shanghai, CN;
SHANGDONG ZHONGBAOKANG MEDICAL DEVICES CO., LTD, Zibo, Shandong, CN;
Abstract
A biodegradable magnesium alloy nerve conduit for nerve defect repair has multiple lines of through holes in the tube wall thereof, the through holes in each line are axially arranged along a circular tube at equal distances, and the through holes in adjacent lines are arranged in a staggered way. A method for preparing the nerve conduit includes steps of: (step 1) processing a 45-degree conical surface at one end of a magnesium alloy tube blank, carrying out extrusion, and obtaining a magnesium alloy intermediate tube material; (step 2) obtaining a capillary tube after carrying out multi-pass rolling and drawing on the magnesium alloy intermediate tube material; (step 3) carrying out stress relief annealing on the capillary tube, laser cutting and punching, and obtaining a porous conduit; and (step 4) carrying out acid pickling on the porous conduit, and then carrying out electrochemical polishing treatment, and obtaining the nerve conduit.