Surgery – Truss – Pad
Patent
1992-01-10
1993-09-28
Cohen, Lee S.
Surgery
Truss
Pad
128734, A61B 504
Patent
active
052479390
ABSTRACT:
A defibrillator/monitor (10) employing a motion detection circuit 18 and control and processing circuit (20) that cooperatively detect motion at a patient-electrode interface. In that regard, an impedance measurement circuit (24) produces an output indicative of the impedance of the interface. This output is then processed by a number of filter elements before being analyzed by a motion detection routine (52). The motion detection routine includes subroutines (62 and 64) that compare the impedance against distinct upper and lower limits and then monitor the time at which the signal is above and below the limits. Basically, motion is indicated if the signal undergoes relatively large variations for a short time, or smaller variations for a longer time. A third motion clear subroutine (66) is used to determine when motion is no longer detected. Finally, a similar scheme (102) is employed to quickly restore the various filter elements after saturation.
REFERENCES:
patent: 3587562 (1971-06-01), Williams
patent: 3608543 (1971-09-01), Longini et al.
patent: 3703900 (1972-11-01), Holznagel
patent: 3871359 (1975-03-01), Pacela
patent: 4305400 (1981-12-01), Logan
patent: 4328808 (1982-05-01), Charbonnier et al.
patent: 4387722 (1983-06-01), Kearns
patent: 4403215 (1983-09-01), Hofmann et al.
patent: 4422458 (1983-12-01), Kravath
patent: 4432375 (1984-02-01), Angel et al.
patent: 4475558 (1984-10-01), Brock
patent: 4506678 (1985-03-01), Russell et al.
patent: 4574810 (1986-03-01), Lerman
patent: 4610254 (1986-09-01), Morgan et al.
patent: 4619265 (1986-10-01), Morgan et al.
patent: 4736157 (1988-05-01), Betker et al.
patent: 4785812 (1988-11-01), Pihl et al.
patent: 4840177 (1989-06-01), Charbonnier et al.
patent: 4870341 (1989-09-01), Pihl et al.
patent: 4917099 (1990-04-01), Stice
patent: 4919145 (1990-04-01), Marriott
patent: 4993423 (1991-02-01), Stice
patent: 5020541 (1991-06-01), Marriott
patent: 5088489 (1992-02-01), Lerman
"Thoracic Impedance of Human Subjects", Machin, J. W., Med & Biol. Eng. & Comput. Mar. 1978, No. 2-16, pp. 169-178.
Sjoquist Steven E.
Taylor James W.
Cohen Lee S.
Jastrzab Jeffrey R.
Physio-Control Corporation
LandOfFree
Detection of electrode/patient motion and fast restore limits does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Detection of electrode/patient motion and fast restore limits, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of electrode/patient motion and fast restore limits will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2185696