Pressure-sensing diagnostic catheter
US5431628A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 7, 1994 |
| Grant date | Jul 11, 1995 |
| Priority date | — |
| Expiry date | Feb 7, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/0002
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to catheters having a distally-mounted balloon and pressure sensor and to methods of placing such catheters within physiological vessels. Catheters have a central lumen extending through the catheter and a pressure sensor which lies within the distal portion of the central lumen but does not occlude the lumen. Additionally, catheters may have a Doppler velocity measurement sensor affixed to the distal end of the catheter for measuring fluid velocity distal to the catheter. Inflation of the balloon prevents vessel wall contact with other portions of the catheter tip during flow-directed placement of the catheter. During catheter placement to obtain a wedge pressure, the balloon is inflated until fluid velocity detected with the Doppler sensor is substantially zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.