Device for closing a septal defect
US6270515A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1997 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Feb 26, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2300/414
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device for closing off a septal defect including a polymeric self-hardening material in a specific conformation which is delivered by a catheter means to the area of defect either directly on the cardiac tissue or into a balloon which spans both surfaces of the defect, and hardened in-situ by change in pH or ionic concentration, organic solvents, by permeation of a secondary material capable of precipitation, or by exposure to heat, light or laser energy. In blood, the device may be hardened through photopolymerization or a cooperative effect of coagulation, precipitation or ionization. The device can be made of biodegradable material impregnated with growth factors, mitogenic factors or other determinants which can improve tissue growth such that tissue ingrowth can occur over a period of time. The catheter itself may be an ultrasonic imaging catheter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.