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Class Information
Number: 607/22
Name: Surgery: light, thermal, and electrical application > Light, thermal, and electrical application > Electrical therapeutic systems > Heart rate regulating (e.g., pacing) > Parameter control in response to sensed physiological load on heart > Chemical substance in blood
Description: Subject matter for controlling the pacer parameter as a function of the concentration, e.g., pH, of a chemical substance in the patient"s blood.










Patents under this class:
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Patent Number Title Of Patent Date Issued
6125290 Tissue overgrowth detector for implantable medical device Sep. 26, 2000
6122536 Implantable sensor and system for measurement and control of blood constituent levels Sep. 19, 2000
6064910 Respirator rate/respiration depth detector and device for monitoring respiratory activity employing same May. 16, 2000
5730125 Implantable medical device with enclosed physiological parameter sensors or telemetry link Mar. 24, 1998
5487752 Automated programmable stimulating device to optimize pacing parameters and method Jan. 30, 1996
5438987 Implantable lead for sensing a physiologic parameter of the body Aug. 8, 1995
5423869 Multi-sensor rate-responsive pacemaker and method of operating same Jun. 13, 1995
5411532 Cardiac pacemaker having integrated pacing lead and oxygen sensor May. 2, 1995
5372607 Method and apparatus for monitoring pacemaker intervals Dec. 13, 1994
5354318 Method and apparatus for monitoring brain hemodynamics Oct. 11, 1994
5342406 Oxygen sensor based capture detection for a pacer Aug. 30, 1994
5312454 Apparatus and method of automatically adjusting a sensor signal comparator threshold for an oxygen sensing pacemaker May. 17, 1994
5306293 Device for the prevention of cardiac failures Apr. 26, 1994
5267564 Pacemaker lead for sensing a physiologic parameter of the body Dec. 7, 1993
5218961 Apparatus for in vivo intracardial of a measured signal corresponding to the physical activity of a subject and a heart pacemaker having a stimulation rate controlled thereby Jun. 15, 1993
5176138 Implantable pacemaker having means for automatically adjusting stimulation energy as a function of sensed SO.sub.2 Jan. 5, 1993
5133349 Method for adapting the stimulation frequency of a heart pacemaker to the burden of the patient Jul. 28, 1992
5113862 Blood oxygen sensor having leakage compensation May. 19, 1992
5101824 Rate-responsive pacemaker with circuitry for processing multiple sensor inputs Apr. 7, 1992
5088488 Method and apparatus for implementing histogram storage and trend analysis in a medical stimulator Feb. 18, 1992
5088491 Heart pacemaker Feb. 18, 1992
5085215 Metabolic demand driven rate-responsive pacemaker Feb. 4, 1992
5076271 Rate-responsive pacing method and system employing minimum blood oxygen saturation as a control parameter and as a physical activity indicator Dec. 31, 1991
5063927 Rate-responsive pacemaker Nov. 12, 1991
5052388 Method and apparatus for implementing activity sensing in a pulse generator Oct. 1, 1991
5044366 Rate responsive cardiac pacemaker Sep. 3, 1991
5040533 Implantable cardiovascular treatment device container for sensing a physiological parameter Aug. 20, 1991
5024222 Hemodynamically rate responsive pacemaker and method of automatically adjusting the escape and A-V intervals Jun. 18, 1991
5014704 Rate responsive cardiac pacemaker May. 14, 1991
5014703 Rate responsive cardiac pacemaker May. 14, 1991
5014702 Rate responsive cardiac pacemaker May. 14, 1991
5014700 Rate responsive cardiac pacemaker May. 14, 1991
4966146 Rate-responsive pacemaker Oct. 30, 1990
4945909 Pacemaker with activity-dependent rate limiting Aug. 7, 1990
4932408 Cardiac pacemaker Jun. 12, 1990
4932406 Dual chamber rate responsive pacemaker Jun. 12, 1990
4903701 Oxygen sensing pacemaker Feb. 27, 1990
4886064 Body activity controlled heart pacer Dec. 12, 1989
4873980 Heart pacemaker Oct. 17, 1989
4870968 System and method for controlling the stimulation frequency of heart pacemakers Oct. 3, 1989
4867163 Cardiac pacemaker Sep. 19, 1989
4867161 Cardiac pacemaker Sep. 19, 1989
4867162 Cardiac pacemaker Sep. 19, 1989
4860751 Activity sensor for pacemaker control Aug. 29, 1989
4848352 Method for cardiac pacing and sensing using combination of electrodes Jul. 18, 1989
4827933 Apparatus and method for adjusting heart/pacer rate relative to cardiac pO.sub.2 obtain a required cardiac output May. 9, 1989
4813421 Oxygen sensing pacemaker Mar. 21, 1989
4807629 Oxygen sensing pacemaker Feb. 28, 1989
4805621 Apparatus for measuring impedance of body tissue Feb. 21, 1989
4779618 Device and method for the physiological frequency control of a heart pacemaker equipped with a stimulating electrode Oct. 25, 1988

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