Method and apparatus for recapture of hooked endoprosthesis
US5902334A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 1997 |
| Grant date | May 11, 1999 |
| Priority date | — |
| Expiry date | Apr 11, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2230/0054
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An endoprosthesis assembly adapted to be positioned within a body lumen includes a resilient, self-expanding anchor attached to a tubular graft. The endoprosthesis can be recaptured in a delivery device to enable repositioning or removal of the endoprosthesis at any time prior to complete deployment of the endoprosthesis in the patient. The delivery device includes an outer tubular member that carries the endoprosthesis in a radially contracted configuration and an elongate inner tubular member that extends through the prosthesis and beyond the distal end of the outer tubular member. A retainer is carried by the inner member that engages and retains the proximal end of the endoprosthesis relative to the inner member until the endoprosthesis is released. The inner member is formed from an alloy that has superelastic characteristics throughout the range of body temperatures to which it will be exposed to enhance the column strength and pushability of the device while providing a high level of longitudinal flexibility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.