Title:
METHOD FOR PREPARING FIBER-BASED DRESSING HAVING DIRECTIONAL EXUDATE-GUIDING FUNCTION
Document Type and Number:
WIPO Patent Application WO/2024/011901
Kind Code:
A1
Abstract:
A method for preparing a fiber-based dressing having a directional exudate-guiding function. The method comprises: step I, respectively preparing a spinning solution of a hydrophobic layer, a spinning solution of a transition layer A, a spinning solution of a transition layer B, and a spinning solution of a transition layer C, wherein the spinning solutions have different hydrophobicity; step II, sequentially forming, by means of electrospinning, the transition layer C, the transition layer B, the transition layer A and the hydrophobic layer on a surface of a cotton fabric, so as to obtain a composite membrane; step III, forming, by means of a mold, hemispherical bulges and tapered channels on a surface of the composite membrane; step IV, cutting the composite membrane obtained in step III into an A-type composite membrane having an exudate guiding strip at a side edge, and cutting the composite membrane obtained in step II into a B-type composite membrane, which has no exudate guiding strip and matches the A-type composite membrane in terms of size; and step V, fitting the A-type composite membrane to the B-type composite membrane, and sealing the periphery thereof to obtain a wound dressing. The fiber-based dressing is provided with a plurality of transition layers having gradient wettability, such that a wound exudate can be directionally guided out and collected; moreover, the hemispherical bulges and the tapered channels are constructed on a surface of the dressing, such that the exudate guiding efficiency can be regulated by means of an external force.
Inventors:
WU JINDAN (CN)
QI DONGMING (CN)
LIU LEI (CN)
GAO YUJIE (CN)
QIU ZHIYE (CN)
QI DONGMING (CN)
LIU LEI (CN)
GAO YUJIE (CN)
QIU ZHIYE (CN)
Application Number:
PCT/CN2023/075554
Publication Date:
January 18, 2024
Filing Date:
February 11, 2023
Export Citation:
Assignee:
UNIV ZHEJIANG SCIENCE & TECH (CN)
International Classes:
A61F13/02; A61L15/18
Domestic Patent References:
| WO2017148099A1 | 2017-09-08 | |||
| WO2018090925A1 | 2018-05-24 |
Foreign References:
| CN115137557A | 2022-10-04 | |||
| CN115025273A | 2022-09-09 | |||
| CN110269749A | 2019-09-24 | |||
| CN107059251A | 2017-08-18 | |||
| CN107106722A | 2017-08-29 | |||
| CN108175573A | 2018-06-19 | |||
| CN109908392A | 2019-06-21 | |||
| CN110820172A | 2020-02-21 | |||
| CN111228040A | 2020-06-05 | |||
| CN112853739A | 2021-05-28 | |||
| CN113368295A | 2021-09-10 | |||
| CN113699696A | 2021-11-26 | |||
| KR20100004141A | 2010-01-13 | |||
| US20080255492A1 | 2008-10-16 | |||
| US20130150763A1 | 2013-06-13 |
Attorney, Agent or Firm:
ZHEJIANG YONGHANG LIANKE PATENT AGENCY CO., LTD. (CN)
Download PDF: