Resources Contact Us Home
Heart pacemaker

Image Number 5 for United States Patent #5088491.

A cardiac pacemaker for implanting in a patient includes a device for applying stimulating pulses to the heart of the patient at a rate determined by a pacing parameter; a device for detecting a first physiological parameter which is correlated with physical exertion of the patient and producing a first output signal representative of the first physiological parameter; a circuitry device receiving the first output signal for varying the pacing parameter as a function of the first output signal received as an input variable; and the circuitry device being a closed-loop control device which receives first output signal from the device for detecting the first physiological parameter, for determining one of (a) the product of the heart rate and the stroke volume and (b) the product of the heart rate and a single variable representative of the stroke volume as the cardiac output, to correspond to changes in the first output signal which represents a standard for the current physical exertion of the patient, for varying the pacing parameter.

  Recently Added Patents
Data unit receiver and sender control method
Television apparatus
Solid-state imaging apparatus, method of manufacturing solid-state imaging apparatus, and electronic apparatus
Calibration of quadrature imbalances using wideband signals
Malicious attack detection and analysis
Motion blur reduction for LCD video/graphics processors
Charged particle beam apparatus
  Randomly Featured Patents
Method and apparatus for dissipating heat from an electronic device
Machine control with motor velocity constraint
Energy absorber
Hydrocarbon fuel vapour filter system
Combined bottle and cap
High pressure liquid chromatographic gradient mixer
One-touch manual telescope and tilt steering column
Fast recovery time receiver protector for radars
Improvement for a nailing gun
Game apparatus using visual/motor skills