Collagen sponge
US4412947A · kind A · utility
129Cited by
12References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 26, 1982 |
| Grant date | Nov 1, 1983 |
| Priority date | — |
| Expiry date | May 26, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/08
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A process for preparing a coherent porous collagen sheet material is comprised of forming natural insoluble particulate collagen in substantially pure form and suspending the particulate collagen in a weak aqueous organic acid solution while maintaining the collagen in particulate form. The suspension is freeze-dried to form a coherent porous native collagen sheet material which is useful as a wound dressing, burn dressing, hemostatic sheet or the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.