Compact crimping device
US11510794B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2020 |
| Grant date | Nov 29, 2022 |
| Priority date | — |
| Expiry date | May 25, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2/9522
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Disclosed herein is a method of crimping a prosthetic heart valve using a compact crimping mechanism. The crimping mechanism includes a plurality of jaws configured for coordinated inward movement toward a crimping axis to reduce the size of a crimping iris around a stented valve. A rotating cam wheel acts on the jaws and displaces them inward. A number of Cartesian guide elements cooperate with the jaws to distribute forces within the crimping mechanism. The guide elements are located between the crimping jaws and an outer housing and are constrained by the outer housing for movement along lines that are tangential to a circle centered on the crimping axis. The guide elements engage at least some of the crimping jaws while the rest are in meshing engagement so as to move in synch. An actuation mechanism includes a lead screw, carriage assembly and a linkage to rotate the cam wheel with significant torque.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.