Surgery – Truss – Pad
Patent
1990-06-08
1992-04-28
Howell, Kyle L.
Surgery
Truss
Pad
128667, 73705, A61B 500
Patent
active
051078473
ABSTRACT:
A fiber-optic transducer apparatus, and a related method of manufacturing it, for particular use in medical applications such as invasive blood pressure and body temperature measurement. The apparatus includes a catheter comprised of a sheath and an enclosed first set of optical fibers for transmitting a light beam to and from the remote end of the catheter, where a transducer modulates it in accordance with the variable to be measured, e.g., blood pressure. A photosensor located at the near end of the catheter measures the modulated intensity of the returned beam, to produce a corresponding measurement signal. The catheter is further comprised of a second set of optical fibers located within the sheath, for transmitting a reference light beam to and from the remote end of the catheter. A second photosensor measures the intensity of the returned reference light beam, to produce a correction signal indicative of variations in transmittance caused by bending of the catheter. It is presumed that the effects of such bending are the same for the second set of optical fibers as for the first set, so the apparatus adjusts the measurement signal in accordance with the correction signal, to produce an adjusted measurement signal that is substantially insensitive to the effects of such bending.
REFERENCES:
patent: 2441882 (1948-05-01), Hicks
patent: 3051003 (1962-08-01), Witt
patent: 3068739 (1962-12-01), Hicks, Jr. et al.
patent: 3249105 (1966-05-01), Polanyi
patent: 3267932 (1966-08-01), Valliere
patent: 4201222 (1980-05-01), Haase
patent: 4210029 (1980-07-01), Porter
patent: 4249076 (1981-02-01), Bergstrom et al.
patent: 4260883 (1981-04-01), Onoda et al.
patent: 4358960 (1982-11-01), Porter
patent: 4487206 (1984-12-01), Aagard
Bailey Wilber H.
Knute Wallace L.
Camino Laboratories
Howell Kyle L.
Lacyk John P.
LandOfFree
Fiber-optic transducer apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fiber-optic transducer apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fiber-optic transducer apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1240853