Optical catheters and method for making same
US4295470A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1978 |
| Grant date | Oct 20, 1981 |
| Priority date | — |
| Expiry date | Nov 29, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/8507
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Catheter apparatus having transmitting and receiving optical fibers for photometric analysis of a fluid eliminates the need for individually calibrating each catheter within a population of catheters by making substantially uniform the center-to-center spacing between the outlet aperture of each and every transmitting fiber and the inlet aperture of each and every receiving fiber of an individual catheter for all catheters within a population of catheters; and by making the size and shape of all the outlet apertures of all transmitting fibers generally uniform and the size and shape of the inlet apertures of all receiving fibers generally uniform in each catheter and from catheter to catheter and that the orientation of all transmitting fibers relative to all receiving fibers be similar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.