Title:
IRON-BASED ABSORBABLE AND IMPLANTABLE MEDICAL DEVICE AND MANUFACTURING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2017/000736
Kind Code:
A1
Abstract:
Provided are an iron-based absorbable and implantable medical device and manufacturing method thereof. The iron-based absorbable and implantable medical device (1) comprises: a substrate (11), a degradable polymer layer (12), and an anionic surfactant layer (13) arranged between the substrate (11) and the degradable polymer layer (12). The anionic surfactant, by using the hydrophobicity thereof, can form a hydrophobic barrier layer in a solution to isolate a surface of the iron-based substrate (11) from a body fluid environment, thereby avoiding direct contact with an acidic environment resulted from degradation of the degradable polymer layer (12) at initial and early stages of implantation, thus preventing severe local corrosion of the iron-based substrate (11).
Inventors:
QIN LI (CN)
ZHANG DEYUAN (CN)
LIN WENJIAO (CN)
QI HAIPING (CN)
LIU ZIQIANG (CN)
ZHANG DEYUAN (CN)
LIN WENJIAO (CN)
QI HAIPING (CN)
LIU ZIQIANG (CN)
Application Number:
PCT/CN2016/084297
Publication Date:
January 05, 2017
Filing Date:
June 01, 2016
Export Citation:
Assignee:
LIFETECH SCIENT (SHENZHEN) CO LTD (CN)
International Classes:
A61L31/14; A61L31/12; A61L31/16
Foreign References:
| CN102228721A | 2011-11-02 | |||
| CN104587534A | 2015-05-06 | |||
| CN102961787A | 2013-03-13 | |||
| CN101292651A | 2008-10-29 | |||
| US20090281613A1 | 2009-11-12 |
Other References:
CHEN, FENG.: "The Application Properties and Structures of Surfactant", PROPERTIES, STRUCTURES, CALCULATION AND APPLICATIONS OF SURFACTANT, 31 March 2004 (2004-03-31), pages 184 - 187, XP009507980
See also references of EP 3318289A4
See also references of EP 3318289A4
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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