Methods for processing biological tissue
US7622276B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2006 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | Jun 6, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N1/126
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for processing biological tissue used in biological prostheses includes providing a tissue procurement solution formed from a phosphate buffered saline (PBS) solution and a chelating agent. The tissue is transferred from the tissue procurement solution and undergoes chemical fixation. The fixed tissue is then immersed in a series of fresh bioburden reduction process (BRP) solutions to extract phospholipids. The tissue procurement solution reduces the bioburden on the stored tissue and preserves tissue architecture by minimizing tissue swelling. The tissue procurement solution further reduces calcium from the incoming water and/or tissue, and inhibits enzymes that digest the collagen matrix. The serial immersion of the tissue in the fresh bioburden solutions ensures optimal extraction of phospholipids thereby mitigating subsequent calcification of the tissue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.