Dual pressure sensing catheter
US5427114A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1993 |
| Grant date | Jun 27, 1995 |
| Priority date | — |
| Expiry date | Aug 19, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/02158
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for determining pressure at one or a number of intermediate points along a catheter inserted into a closed cavity. Fiberoptic cables extend from the proximal end of the catheter to the intermediate points at which pressure measurements are taken as well as to the distal tip of the catheter. The fiberoptic cables transport light signals injected at the proximal end and said light signals are illuminated in the direction of a flexible, reflective membrane. A pressure sensing coupler interconnects proximal and distal sections of the catheter sheath and also houses the pressure sensor. The pressure sensing coupler includes a plurality of radial ports which provide communication between the fluid in the cavity and a pressure sensing chamber, which is also in communication with the reflective membrane. The pressure sensing coupler also enables the passage of inner catheters through axial passageways for interconnection to other distally located pressure sensors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.