Ultrasonically marked cardiac catheters
US4697595A · kind A · utility
402Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1985 |
| Grant date | Oct 6, 1987 |
| Priority date | — |
| Expiry date | Jan 31, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/3929
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The hollow cylindrical wall of the catheter is composed of flexible, electrically insulating, ultrasonically transparent material. Embedded therein are spaced tubular-shaped ultrasonic piezoelectric transducers which substantially surround the lumen. The transducers receive signals from the imaging transducer on the body surface and serve to establish catheter location within the body during a diagnostic procedure. Electrical connector leads from the transducers are embedded in the wall and connected to a signal processor which provides an output for incorporation into the display of an echocardiograph image display system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.