EP0000988A1 - Stimulateur cardiaque réagissant sur demande - Google Patents

Stimulateur cardiaque réagissant sur demande Download PDF

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Publication number
EP0000988A1
EP0000988A1 EP78300242A EP78300242A EP0000988A1 EP 0000988 A1 EP0000988 A1 EP 0000988A1 EP 78300242 A EP78300242 A EP 78300242A EP 78300242 A EP78300242 A EP 78300242A EP 0000988 A1 EP0000988 A1 EP 0000988A1
Authority
EP
European Patent Office
Prior art keywords
counter
reset
input
flop
control means
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.)
Granted
Application number
EP78300242A
Other languages
German (de)
English (en)
Other versions
EP0000988B1 (fr
Inventor
Dennis Digby
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.)
Biotronik SE and Co KG
Original Assignee
Biotronik Mess und Therapiegeraete GmbH and Co
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
Priority claimed from US05/917,129 external-priority patent/US4173230A/en
Application filed by Biotronik Mess und Therapiegeraete GmbH and Co filed Critical Biotronik Mess und Therapiegeraete GmbH and Co
Publication of EP0000988A1 publication Critical patent/EP0000988A1/fr
Application granted granted Critical
Publication of EP0000988B1 publication Critical patent/EP0000988B1/fr
Expired legal-status Critical Current

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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

Definitions

  • a demand pacemaker normally includes an input amplifier for receiving and amplifying electrical signals from the heart (which signals might result from either a natural beat or an artificial pulse which has just been generated by the pacemaker), a pacemaker control circuitry which receives the amplified signals and which causes a new artificial stimulating pulse to be generated (for transmission to the heart) only if the amplified signals, or lack thereof, show that an artificial stimulating pulse is required by the heart (i.e. on demand), and an output amplifier which receives and amplifies the artificial pulses generated by the control circuitry, for passage to the heart.
  • a single input pulse is received during the last 88-96 msec of the refractory period, this effectively acts to extend the refractory period by up to 96 msec maximum, to provide a "system refractory period" of 416 msec maximum.
  • This "refractory period extension" may be beneficial to the pacemaker in that extraneous signals present towards the latter part of the refractory period are ignored (as being natural heart beats) and the chance of the pacemaker being inhibited by unwanted signals (e.g. a large T-wave from the heart) is reduced.

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Cardiology (AREA)
  • Engineering & Computer Science (AREA)
  • Physiology (AREA)
  • Biophysics (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)
EP19780300242 1977-08-19 1978-08-03 Stimulateur cardiaque réagissant sur demande Expired EP0000988B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB3491477 1977-08-19
GB3491477 1977-08-19
US05/917,129 US4173230A (en) 1977-08-19 1978-06-19 Noise elimination and refractory period control in demand pacers
US917129 1978-06-19

Publications (2)

Publication Number Publication Date
EP0000988A1 true EP0000988A1 (fr) 1979-03-07
EP0000988B1 EP0000988B1 (fr) 1982-05-26

Family

ID=26262490

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19780300242 Expired EP0000988B1 (fr) 1977-08-19 1978-08-03 Stimulateur cardiaque réagissant sur demande

Country Status (4)

Country Link
EP (1) EP0000988B1 (fr)
AU (1) AU3895978A (fr)
CA (1) CA1098589A (fr)
DE (1) DE2861865D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2440198A1 (fr) * 1978-11-06 1980-05-30 Medtronic Inc Stimulateur implantable
EP0011938A2 (fr) * 1978-11-06 1980-06-11 Medtronic, Inc. Générateur d'impulsions pour stimulateur cardiaque programmable
EP0011939A2 (fr) * 1978-11-06 1980-06-11 Medtronic, Inc. Générateur d'impulsions digital pour stimulateur cardiaque

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3557796A (en) * 1969-03-10 1971-01-26 Cordis Corp Digital counter driven pacer
FR2329007A1 (fr) * 1975-10-23 1977-05-20 Arco Med Prod Co Stimulateur cardiaque numerique
LU76880A1 (fr) * 1976-03-03 1977-07-12

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3557796A (en) * 1969-03-10 1971-01-26 Cordis Corp Digital counter driven pacer
FR2329007A1 (fr) * 1975-10-23 1977-05-20 Arco Med Prod Co Stimulateur cardiaque numerique
LU76880A1 (fr) * 1976-03-03 1977-07-12

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2440198A1 (fr) * 1978-11-06 1980-05-30 Medtronic Inc Stimulateur implantable
EP0011938A2 (fr) * 1978-11-06 1980-06-11 Medtronic, Inc. Générateur d'impulsions pour stimulateur cardiaque programmable
EP0011939A2 (fr) * 1978-11-06 1980-06-11 Medtronic, Inc. Générateur d'impulsions digital pour stimulateur cardiaque
FR2443845A1 (fr) * 1978-11-06 1980-07-11 Medtronic Inc Generateur d'impulsions de stimulateur cardiaque numerique perfectionne
EP0011939A3 (en) * 1978-11-06 1981-01-07 Medtronic, Inc. Digital cardiac pacemaker pulse generator
EP0011938A3 (en) * 1978-11-06 1981-01-07 Medtronic, Inc. Programmable cardiac pacemaker pulse generator

Also Published As

Publication number Publication date
CA1098589A (fr) 1981-03-31
DE2861865D1 (en) 1982-07-15
EP0000988B1 (fr) 1982-05-26
AU3895978A (en) 1980-02-21

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