Device and method for measuring volumetric blood flow in a vessel
US4869263A · kind A · utility
148Cited by
9References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1988 |
| Grant date | Sep 26, 1989 |
| Priority date | — |
| Expiry date | Feb 4, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M25/10
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Device for measuring volumetric blood flow in a vessel comprising a catheter having proximal and distal extremities. A balloon is carried by the distal extremity of the catheter. A balloon inflation lumen is carried by the catheter and is in communication with the balloon. A toroidal ultrasonic transducer is carried by the catheter and is spaced proximally of the balloon. Electrical circuitry is provided for supplying electrical energy to the transducer. The transducer produces a large substantially uniform beam of ultrasonic energy to illuminate a vessel of approximately three centimeters in diameter with the ultrasonic energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.