Intravascular catheter and method of controlling hemorrhage during minimally invasive surgery
US5904147A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Aug 16, 1996 |
| Grant date | May 18, 1999 |
| Priority date | — |
| Expiry date | Aug 16, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M25/0125
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A catheter, for example a balloon or treatment catheter, is positioned to prevent hemorrhage during surgery by inserting the catheter in a deflated configuration along a passage such as a blood vessel near to the operative site in a position determined by direct or video-assisted viewing from outside the passage. In the event a blood vessel is cut during surgery, the previously positioned catheter inflates a balloon to occlude the passage and stop blood flow into the injured site. A flow-directed catheter includes an inflatable balloon attached at its distal end and an optical fiber connected to one or more light emitting regions positioned in the vicinity of the balloon. The light is emitted transversely, and preferably omnidirectionally at one or more points with a sufficient brightness to provide beacons that are readily detected through the walls of a blood vessel and permit a direct determination of the exact location of the balloon within the vessel. Rather than a flow-directed balloon catheter, a drug-delivery or other catheter may be used. In that case the light emitting regions are located at or adjacent to one or more drug delivery ports or other active areas in the cathe…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.