1993-10-22
1995-09-19
Sykes, Angela D.
Surgery
Truss
Pad
128748, 73749, A61B 50215
Patent
active
054508533
ABSTRACT:
A pressure sensor having a tubular member partially filled with a ferrofluid column and partially filled with air, with an electrically conductive coil wrapped around the tubular member. When in use, the coil has alternating current running therethrough and the voltage across the coil is monitored. Physiologic pressure variations result in proportional variations in the position of the ferrofluid/air interface relative to the coil. This results in proportional changes in the coil voltage due to the change in coil inductance. The pressure sensor is compact and can be incorporated into many devices including a guide wire.
REFERENCES:
patent: 2769337 (1956-11-01), Rich
patent: 3062202 (1962-11-01), Hyman et al.
patent: 3349623 (1967-10-01), Pastan
patent: 3357260 (1967-12-01), Detalle
patent: 3750067 (1973-07-01), Fletcher et al.
patent: 3911902 (1975-10-01), Delpy
patent: 3942382 (1976-03-01), Hok
patent: 4261208 (1981-04-01), Hok
patent: 4297890 (1981-11-01), Hok
patent: 4413528 (1983-11-01), Hok et al.
patent: 4462259 (1984-07-01), Stoltman et al.
patent: 4487206 (1984-11-01), Aagard
patent: 4691709 (1987-09-01), Cohen
patent: 4711249 (1987-12-01), Brooks
patent: 4722218 (1988-02-01), Strader
patent: 4780418 (1988-10-01), Kratzer
patent: 4809709 (1989-03-01), Brooks
patent: 4846191 (1989-07-01), Brockway et al.
patent: 4854326 (1989-08-01), Merrick
patent: 4874005 (1989-10-01), Potter
patent: 4887610 (1989-12-01), Mittal
patent: 4924872 (1990-05-01), Frank
patent: 4924877 (1990-05-01), Brooks
patent: 4953553 (1990-09-01), Tremulis
patent: 4991590 (1991-02-01), Shi
patent: 5050297 (1991-09-01), Metzger
patent: 5113868 (1992-05-01), Wise et al.
patent: 5178153 (1993-01-01), Einzig
patent: 5178159 (1993-01-01), Christian
patent: 5195375 (1993-03-01), Tenerz et al.
patent: 5226423 (1993-07-01), Tenerz et al.
Chau, H. L., et al., "An Ultraminiature Solid-State Pressure Sensor for a Cardiovascular Catheter", IEEE Transactions on Electron Devices, vol. 35, No. 12, pp. 2355-2362, Dec. 1988.
Author unknown, "On the Spot: Sensor That Measures Blood Pressure", one page, date unknown.
Product Literature from RADI Medical Systems on their "Pressure Guide 0.018: Guidewire-Mounted Pressure Sensor for PTCA", 2 pages, date unknown.
Author unknown, "Pressure Gradient Analyzer Guidewire-Mounted Sensor", Biomedical Technology Information Service, p. 210, Oct. 15, 1991.
Product Literature from Cardiometrics on their "FloWire" and FloMap, 2 pages, date unknown.
Hastings Roger
Larson Ken
Sci-Med Life Systems, Inc.
Sykes Angela D.
LandOfFree
Pressure sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pressure sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure sensor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1822731