Absorbable polyoxaesters containing amines and/or amido groups
US5595751A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1996 |
| Grant date | Jan 21, 1997 |
| Priority date | — |
| Expiry date | Feb 8, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2525
- 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 of the formula: EQU [--O--R.sub.12 --].sub.U, XVI and optionally a third repeating unit with a formula selected from the group consisting of: EQU [--O--R.sub.4 --].sub.A, II EQU [--O--R.sub.5 --C(O)--].sub.B, III EQU ([--O--R.sub.5 --C(O)].sub.P,--O--).sub.L G XI and combinations thereof wherein R.sub.12 contains an internal amine or internal amide group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.