Absorbable polyoxaesters
US5618552A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1996 |
| Grant date | Apr 8, 1997 |
| Priority date | — |
| Expiry date | Mar 5, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31551
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention describes a new aliphatic polyoxaesters that is bioabsorbable and may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The invention also contemplates a process for producing these polyesters. The aliphatic polyoxaesters of the present invention have a first divalent repeating unit of formula I: EQU [O--C(O)--C(R.sub.1)(R.sub.2)--O--(R.sub.3)--O--C(R.sub.1)(R.sub.2)--C(O)-- ]I and a second repeating unit selected from the group of formulas consisting of: EQU [--O--R.sub.4 --].sub.A, II EQU [--O--R.sub.5 --C(O)--].sub.B, and III EQU ([--O--R.sub.5 --C(O)].sub.P --O--).sub.L G XI and combinations thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.