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Title:
DEGRADABLE MAGNESIUM ALLOY IN-SITU COMPOSITE STAPLE AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/243684
Kind Code:
A1
Abstract:
A degradable magnesium alloy in-situ composite staple and a preparation method therefor, relating to the technical field of biomedical materials. The staple is made of a composite structural material and mainly comprises two parts; an inner part is composed of a high-strength good-plasticity Mg-Zn-Nd magnesium alloy, and an outer part is composed of MgF2 having a corrosion protection function and is formed by in-situ compounding an outer layer of the Mg-Zn-Nd magnesium alloy staple to MgF2. The magnesium alloy composite staple has good plastic deformation capability and mechanical strength, a slow degradation speed, and excellent biological safety, meets the requirements for implantation of the staple into a body, can be degraded gradually in the body after a medical effect in the biological body is achieved, and avoids secondary surgery for taking out the staple.

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Inventors:
MA ZHENG (CN)
TAN LILI (CN)
YANG KE (CN)
Application Number:
PCT/CN2020/094574
Publication Date:
December 09, 2021
Filing Date:
June 05, 2020
Export Citation:
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Assignee:
SICHUAN MGALL MEDICAL DEVICES CO LTD (CN)
International Classes:
C22C23/06; C22C1/02; C22F1/06; C23C22/34; C25F3/18
Foreign References:
CN111424202A2020-07-17
CN110144534A2019-08-20
CN107736906A2018-02-27
CN102698317A2012-10-03
CN110234366A2019-09-13
US20060198869A12006-09-07
CN106086562A2016-11-09
CN201617885U2010-11-03
CN105326535A2016-02-17
Other References:
See also references of EP 4163408A4
Attorney, Agent or Firm:
CHENGDU HUAFENG PATENT OFFICE (GENERAL) (CN)
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