Laser heated intravascular cautery cap assembly
US4848339A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 1988 |
| Grant date | Jul 18, 1989 |
| Priority date | — |
| Expiry date | Apr 11, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/3614
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improved laser heated intravascular cautery cap construction includes a generally cylindrical outersidewall, and a tappered, annular, distal end wall joining the two sidewalls and defining a closed annular space therebetween. A bore extending axially through the inner sidewall is dimentioned to receive in freely sliding fashion an arterial guidewire or other device such as a doppler flow sensor or an optical bundle for viewing. A unitary or multi-segment annular target element is received within the distal portion of the annular space, and is secured to the outer sidewall adjacent to the end wall with a gap defined between the target element and the inner sidewall. A plurality of holes extend through a connector member parallel to the axis of the sidewalls, each hole receiving therethrough one of a plurality of optical fibers extending through the arterial catheter to a laser light source. Each fiber is aimed at one segment or portion of the target element, so that the fibers may be illuminated selectively to heat the respective portion or segment and the adjacent outer sidewall and distal end wall portions. The air gap defined between the target disc segments and the inner side…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.