GB1335680A - Rate discrimination circuit - Google Patents

Rate discrimination circuit

Info

Publication number
GB1335680A
GB1335680A GB193373A GB193370A GB1335680A GB 1335680 A GB1335680 A GB 1335680A GB 193373 A GB193373 A GB 193373A GB 193370 A GB193370 A GB 193370A GB 1335680 A GB1335680 A GB 1335680A
Authority
GB
United Kingdom
Prior art keywords
capacitor
transistor
conduct
discharging
charging
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB193373A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
American Optical Corp
Original Assignee
American Optical Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Optical Corp filed Critical American Optical Corp
Publication of GB1335680A publication Critical patent/GB1335680A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/362—Heart stimulators
    • A61N1/365—Heart stimulators controlled by a physiological parameter, e.g. heart potential
    • A61N1/368—Heart stimulators controlled by a physiological parameter, e.g. heart potential comprising more than one electrode co-operating with different heart regions

Landscapes

  • Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Physiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Electrotherapy Devices (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
GB193373A 1969-12-15 1970-12-15 Rate discrimination circuit Expired GB1335680A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US88482569A 1969-12-15 1969-12-15

Publications (1)

Publication Number Publication Date
GB1335680A true GB1335680A (en) 1973-10-31

Family

ID=25385487

Family Applications (2)

Application Number Title Priority Date Filing Date
GB193373A Expired GB1335680A (en) 1969-12-15 1970-12-15 Rate discrimination circuit
GB5943570A Expired GB1335679A (en) 1969-12-15 1970-12-15 Pacemakers

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB5943570A Expired GB1335679A (en) 1969-12-15 1970-12-15 Pacemakers

Country Status (5)

Country Link
US (1) US3661158A (enExample)
JP (1) JPS5145912B1 (enExample)
DE (1) DE2061182A1 (enExample)
GB (2) GB1335680A (enExample)
NL (1) NL7016859A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4278900A (en) 1979-02-15 1981-07-14 Westinghouse Electric Corp. Fail-safe pulse providing apparatus

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3814106A (en) * 1972-04-14 1974-06-04 American Optical Corp Atrial and ventricular pacer having independent rate controls and means to maintain a constant av delay
US3999556A (en) * 1974-12-16 1976-12-28 Medtronic, Inc. Demand cardiac pacemaker with input circuit portion of increased sensitivity
DE2701104A1 (de) * 1977-01-12 1978-07-13 Medtronic France S A Herzschrittmacher
US4421114A (en) * 1978-10-30 1983-12-20 Berkovits Barouh V Tachycardia treatment
US4333470A (en) * 1980-04-07 1982-06-08 Medtronic, Inc. Output pulse artifact rejection in demand pacemakers
USRE32378E (en) * 1980-04-07 1987-03-24 Medtronic, Inc. Output pulse artifact rejection in demand pacemakers and sensing circuits employed in conjunction therewith
US4328807A (en) * 1980-04-07 1982-05-11 Medtronic, Inc. Output pulse artifact rejection in demand pacemakers
US4386610A (en) * 1980-05-27 1983-06-07 Cordis Corporation Ventricular-inhibited cardiac pacer
US4407287A (en) * 1981-02-17 1983-10-04 Medtronic, Inc. Atrial and ventricular-only pacemaker responsive to premature ventricular contractions
EP0160801B1 (en) * 1981-02-17 1991-09-25 Medtronic, Inc. Implantable medical device power source depletion indicators
US4401119A (en) * 1981-02-17 1983-08-30 Medtronic, Inc. Prolongation of timing intervals in response to ectopic heart beats in atrial and ventricular pacemakers
US5978710A (en) 1998-01-23 1999-11-02 Sulzer Intermedics Inc. Implantable cardiac stimulator with safe noise mode
US20040127932A1 (en) * 2002-09-12 2004-07-01 Shah Tilak M. Dip-molded polymeric medical devices with reverse thickness gradient, and method of making same
US7697986B2 (en) * 2006-07-10 2010-04-13 Biotronik Crm Patent Ag Cardiac pacemaker
WO2010144402A2 (en) 2009-06-08 2010-12-16 Surgivision, Inc. Mri-guided surgical systems with preset scan planes
WO2010148088A2 (en) 2009-06-16 2010-12-23 Surgivision, Inc. Mri-guided devices and mri-guided interventional systems that can track and generate dynamic visualizations of the devices in near real time

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE632412A (enExample) * 1962-05-17
US3433228A (en) * 1966-05-06 1969-03-18 Cordis Corp Multimode cardiac pacer
US3454012A (en) * 1966-11-17 1969-07-08 Esb Inc Rechargeable heart stimulator
US3523539A (en) * 1968-02-26 1970-08-11 Hewlett Packard Co Demand cardiac pacemaker and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4278900A (en) 1979-02-15 1981-07-14 Westinghouse Electric Corp. Fail-safe pulse providing apparatus

Also Published As

Publication number Publication date
NL7016859A (enExample) 1971-06-17
JPS5145912B1 (enExample) 1976-12-06
DE2061182A1 (de) 1971-06-24
US3661158A (en) 1972-05-09
GB1335679A (en) 1973-10-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years