Title:
DRUG-LOADING INSTRUMENT AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/121352
Kind Code:
A1
Abstract:
A drug-loading instrument and a preparation method therefor, the drug-loading instrument comprising an instrument body (10) and a drug coating (12) which is disposed on a surface of the instrument body (10). The drug-loading instrument has a contracted state and an expanded state, wherein the outer diameter of the drug-loading instrument in the contracted state is smaller than the outer diameter of the drug-loading instrument in the expanded state. A protective sleeve (20) is sleeved on an outer portion of the drug-loading instrument. The protective sleeve (20) is made of a high polymer material, and the protective sleeve (20) may swell in an organic solvent. During preparation, the protective sleeve (20) first swells in a solvent to a larger inner diameter, and is then sleeved on a surface of the drug-loading instrument, after the organic solvent evaporates, the protective sleeve (20) shrinks to the original size thereof and tightly wraps the outer portion of the drug-loading instrument. Therefore, friction between an inner wall of the protective sleeve (20) and the drug coating (12) of the drug-loading instrument may be reduced, preventing the drug coating (12) or the instrument body (10) from being damaged; the drug-loading instrument may be confined to a relatively small profile outer diameter, thereby increasing the ability of the drug-loading instrument to pass through a curved body lumen or a stenotic lesion site.
Inventors:
LU JINHUA (CN)
XIE QIZONG (CN)
FU WEIGUO (CN)
YUE JIANING (CN)
XIE QIZONG (CN)
FU WEIGUO (CN)
YUE JIANING (CN)
Application Number:
PCT/CN2017/117225
Publication Date:
July 05, 2018
Filing Date:
December 19, 2017
Export Citation:
Assignee:
LIFETECH SCIENT SHENZHEN CO (CN)
International Classes:
A61M25/10
Foreign References:
| US20060036310A1 | 2006-02-16 | |||
| CN102675771A | 2012-09-19 | |||
| JP2008289847A | 2008-12-04 | |||
| US6533806B1 | 2003-03-18 | |||
| CN102665612A | 2012-09-12 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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