Title:
PANCREATIN INACTIVATION STENT DRAINAGE TUBE AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2024/021389
Kind Code:
A1
Abstract:
A pancreatin inactivation stent drainage tube (1) and a preparation method therefor. The stent drainage tube (1) comprises a stent drainage tube skeleton (4) and pancreatin inactivation layers (2, 3). The stent drainage tube skeleton (4) is made of a transparent medical polyvinyl chloride (PVC) or polyimide (PI) material by means of 3D printing technology, and is of a tubular structure with a smooth outer surface and a wrinkled inner surface. The inactivation layers (2, 3) consist of one or two of Ag and Cu nanoparticle layers of a wrinkled structure. The inactivation layers (2, 3) coat the inner and outer surfaces of the skeleton of the tubular structure. The outer surface is provided with barbs (5) for fixing, and side holes for observation, etc. to remedy the defect that existing stent drainage tubes for pancreaticojejunostomy do not have inactivating activity against pancreatin, thereby improving the safety of pancreaticojejunostomy.
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Inventors:
XIONG LI (CN)
LIN LIANGWU (CN)
YANG ZHIPING (CN)
LIN LIANGWU (CN)
YANG ZHIPING (CN)
Application Number:
PCT/CN2022/133687
Publication Date:
February 01, 2024
Filing Date:
November 23, 2022
Export Citation:
Assignee:
UNIV CENTRAL SOUTH (CN)
International Classes:
A61M27/00
Domestic Patent References:
| WO2008027720A2 | 2008-03-06 |
Foreign References:
| CN114939226A | 2022-08-26 | |||
| CN104905835A | 2015-09-16 | |||
| CN101684554A | 2010-03-31 | |||
| CN110184705A | 2019-08-30 | |||
| CN111493960A | 2020-08-07 | |||
| CN209475350U | 2019-10-11 | |||
| US20110100381A1 | 2011-05-05 | |||
| US20220211984A1 | 2022-07-07 |
Attorney, Agent or Firm:
RUNPING & PARTNERS (CN)
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