Prosthetic tissue valve and method of treating the same
US11786365B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2020 |
| Grant date | Oct 17, 2023 |
| Priority date | — |
| Expiry date | Jul 28, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7534
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A prosthetic tissue valve and a method of treating the prosthetic tissue valve are provided. The method includes: decreasing a temperature of a chamber carrying the prosthetic tissue valve from a first preset temperature to a second preset temperature in a first cooling rate; decreasing the temperature of the chamber carrying the prosthetic tissue valve from the second preset temperature to a third preset temperature in a second cooling rate; and performing a drying process to the prosthetic tissue valve. The second preset temperature is a critical crystallization temperature and is greater than a crystallization temperature of the prosthetic tissue valve. The third preset temperature is lower than the crystallization temperature of the prosthetic tissue valve, and the second cooling rate is greater than the first cooling rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.