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Title:
BIOABSORBABLE FIBER-LIKE MEDICAL MATERIAL
Document Type and Number:
WIPO Patent Application WO/2022/092014
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a bioabsorbable stretchable fiber-like medical material that requires only a small force to achieve ligation that gives small knots and is less likely to loosen. The present invention provides a fiber-like medical material that comprises a molded article obtained by spinning and stretching a bioabsorbable aliphatic polymer, has an elongation at break of 75% or more, has a lower intermediate tensile elasticity at a strain in the range of 0.25-10% than an initial tensile elasticity at a strain in the range of 0.05-0.25%, the intermediate tensile elasticity being 400 MPa or less, and has a residual strain ratio after 100% deformation of 70% or less.

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Inventors:
MAEHARA AKIRA (JP)
HIRATA HITOSHI (JP)
MURAYAMA ATSUHIKO (JP)
NAKAGAWA YASUNOBU (JP)
Application Number:
PCT/JP2021/039270
Publication Date:
May 05, 2022
Filing Date:
October 25, 2021
Export Citation:
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Assignee:
MITSUBISHI GAS CHEMICAL CO (JP)
NATIONAL UNIV CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM (JP)
International Classes:
A61L17/00; A61L17/06; A61L17/10; A61L17/12
Domestic Patent References:
WO2004101002A22004-11-25
WO2019044837A12019-03-07
WO2004029266A12004-04-08
Foreign References:
JP2003328230A2003-11-19
JPH06336523A1994-12-06
JP2007046050A2007-02-22
JP2003339849A2003-12-02
JPH0489065A1992-03-23
JP2001149462A2001-06-05
JP2011006496A2011-01-13
JP4071661B22008-04-02
JP2019505338A2019-02-28
JPH06336523A1994-12-06
US6867247B22005-03-15
JP5031144B22012-09-19
JP2007525601A2007-09-06
JP2003513130A2003-04-08
JP2003513131A2003-04-08
JPH0461638A1992-02-27
JPH07177894A1995-07-18
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JP2019090739A2019-06-13
JP2020096144A2020-06-18
JP2020096145A2020-06-18
Other References:
DAVID P. MARTIN AND SIMON F. WILLIAMS: "Medical applications of poly-4-hydroxybutyrate: a strong flexible absorbable biomaterial", BIOCHEMICAL ENGINEERING JOURNAL, ELSEVIER, AMSTERDAM, NL, vol. 16, 9 December 2002 (2002-12-09), NL , pages 97 - 105, XP002740256, ISSN: 1369-703X, DOI: 10.1016/S 1369-703X(03)00040-8
BMC SURGERY, vol. 8, 2008
ODERMATT ET AL., INTERNATIONAL JOURNAL OF POLYMER SCIENCE, vol. 2012
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SILVER E ET AL., J.ORAL.MAXILLOFAC.SURG., vol. 74, no. 7, July 2016 (2016-07-01), pages 1304 - 1312
FUNAI ET AL.: "Creation of physical property value database of biological tissue for biomechanical simulation and application thereof", REPORTS OF THE INDUSTRIAL RESEARCH INSTITUTE OF SHIZUOKA PREFECTURE, vol. 52, 2007, pages 33 - 37
WILLIAMS ET AL., BIOMED TECH (BERL, vol. 58, no. 5, October 2013 (2013-10-01), pages 439 - 452
ALBERTSMEIER, LANGENBECKS ARCH SURG, vol. 397, 2012, pages 363 - 371
See also references of EP 4233922A4
Attorney, Agent or Firm:
SIKS & CO. (JP)
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