A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
73/55
A61B 5/00 (2006.01) G01N 21/85 (2006.01) G01N 21/35 (2006.01)
Patent
CA 1301474
23 448/708 TAH:cp 7/2/86 2183N Abstract Apparatus and methods are provided for determining the concentration of a gaseous component in a fluid A solid body of a natural or synthetic high polymer, which is permeable to the gaseous component, is exposed to the fluid, the polymer is exposed to infrared radiation, and the infrared absorption by the gas in the polymer is measured. In the preferred embodiment, a sensor is provided for making in vivo measurements of the concentration of CO2 in the blood. The sensor includes an optical fiber which is nonpermeable to CO2 and substantially transparent at the CO2 absorption wavelength range, and a solid body of polymeric material at the distal end of the fiber which is substantially transparent to the absorption wavelength range and permeable to CO2. An incident infrared signal is transmitted down the fiber, passes throught the body, is reflected off the distal end of the body, and the intensity of the return signal is measured by a detector. The return signal is diminished in proportion to the concentration of the CO2 in the polymeric body. The sensor is disposed within a catheter and is positionable within the narrow blood vessels of the body for continuous real time monitoring of the carbon dioxide concentration of the blood.
541915
Nestor James R.
C. R. Bard Inc.
Nestor James R.
Swabey Ogilvy Renault
LandOfFree
Sensor for measuring the concentration of a gaseous... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sensor for measuring the concentration of a gaseous..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sensor for measuring the concentration of a gaseous... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1236420