Surgery – Instruments – Orthopedic instrumentation
Reexamination Certificate
2005-03-08
2005-03-08
Truong, Kevin T. (Department: 3731)
Surgery
Instruments
Orthopedic instrumentation
C601S152000
Reexamination Certificate
active
06863670
ABSTRACT:
The present invention provides a method for applying external counterpulsation to a patient, including detecting a blood-flow impedance signal, self-adaptive filter processing the detected blood-flow impedance signal, and adjusting inflation of an inflatable member based on the self-adaptive filter processing in order to optimize counterpulsation timing. The present invention further includes an external counterpulsation apparatus providing a high-frequency current source applied to the patient to produce an electrocardiographic signal and a blood flow impedance signal, as well as an amplifier-filter circuit to operably condition the electrocardiographic signal and a heart impedance signal amplifier receiving the blood flow impedance signal. A computer processes the signals and controls a fluid distribution device to distribute compressed fluid to a plurality of inflatable members based on said processed signals.
REFERENCES:
patent: 5095912 (1992-03-01), Tomita
patent: 5554103 (1996-09-01), Zheng et al.
Huang Zhili
Huang Ziqiang
Liao Ying
Yang Shifang
Zheng Zhensheng
Truong Kevin T.
Vasomedical, Inc.
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