Process of controlling absorbency in collagen flakes
US6613348B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Jul 31, 2001 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Jul 31, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L26/0033
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention provides an improved process for controlling the absorbency and other properties of collagen flakes. The process comprises using freeze-dried collagen material and heating the freeze dried collagen material to a predetermined temperature range between 80 C. and 200 C. for a selected period of time. The collagen flakes will have an improved absorbency, density, porosity, and color. The color of the collagen flakes varies from white to brown. The porosity, absorbency, density and color of the collagen is selectively dependent upon the time and temperature used to heat the collagen flakes. The absorption of the collagen material is selected to be between two to twenty times the weight of the product, and the density of the collagen material is selected to be between 0.1 g/cc to 1.0 g/cc. The collagen flakes are ground into a powder after heating, for use as a wound dressing for medium to high exudative wounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.