Stepwise-clamping type valve prosthesis and delivery system thereof
US12357458B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2019 |
| Grant date | Jul 15, 2025 |
| Priority date | — |
| Expiry date | Nov 11, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0069
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present application relates to a stepwise-clamping type valve prosthesis including a frame body and a clamping member. The frame body has a channel allowing blood to flow therethrough. The clamping member includes a first clamping member and a second clamping member. One end of the first clamping member is connected to the frame body, and the other end of the first clamping member is a free end. The second clamping member is connected to the first clamping member. The clamping member has three states in sequence from being restricted to being fully released. In the first state, the first clamping member and the second clamping member are both restricted and restricted. In the second state, the second clamping member is restricted, and the first clamping member extends in a radial direction of the frame body and is capable of reaching a position between a valve leaflet and a heart wall. In the third state, the second clamping member protrudes from the first clamping member and extends in a circumferential direction of the frame body and abuts against an outer surface of the frame body, so that an autologous valve leaflet and adjacent tissues are capable of being clamped between …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.