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
Computer device with digitizer calibration system and method
Microbial fuel cell and method of use
Motor assembly
Image decolorizing device
Method and device for peer arrangement in single substream upload P2P overlay networks
Solid-state imaging device and electronic apparatus with antireflection structure
Flexible organic light emitting device and manufacturing method thereof
  Randomly Featured Patents
Carrier for skis and ski poles
Optical beam expander for dye laser
Error correction method and apparatus
Piezoelectric mixing method
Bonding method of magnetic head micro-motion actuator
Reducing effects of transmission line reflections by changing transmission line pedestal voltage or recever threshold voltage while monitoring for irregular synchronization
Assist grip
Alleles of the gnd gene from coryneform bacteria
Manual toilet seat lifter apparatus