SE7906205L - IMPLANT PACEMAKER - Google Patents

IMPLANT PACEMAKER

Info

Publication number
SE7906205L
SE7906205L SE7906205A SE7906205A SE7906205L SE 7906205 L SE7906205 L SE 7906205L SE 7906205 A SE7906205 A SE 7906205A SE 7906205 A SE7906205 A SE 7906205A SE 7906205 L SE7906205 L SE 7906205L
Authority
SE
Sweden
Prior art keywords
output
counter
vco
controlled
leads
Prior art date
Application number
SE7906205A
Other languages
Swedish (sv)
Other versions
SE445176B (en
Inventor
S R Duggan
Original Assignee
Medtronic Inc
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 Medtronic Inc filed Critical Medtronic Inc
Publication of SE7906205L publication Critical patent/SE7906205L/en
Publication of SE445176B publication Critical patent/SE445176B/en

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
    • A61N1/372—Arrangements in connection with the implantation of stimulators
    • A61N1/37211—Means for communicating with stimulators
    • A61N1/37252—Details of algorithms or data aspects of communication system, e.g. handshaking, transmitting specific data or segmenting data
    • A61N1/37264—Changing the program; Upgrading firmware
    • 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
    • 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
    • A61N1/37—Monitoring; Protecting
    • 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
    • A61N1/372—Arrangements in connection with the implantation of stimulators
    • A61N1/37211—Means for communicating with stimulators

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biomedical Technology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Cardiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biophysics (AREA)
  • Physiology (AREA)
  • Electrotherapy Devices (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

A multi-mode pacemaker includes a microprocessor 100 and a memory 102 programmable with a variety of processes for stimulating a heart and/or a sensing and transmitting to an external device conditions of the heart or pacemaker. The microprocessor controls a multiplexer 106 to input via a scaling amplifier and a/d converter 108 signals from atrial and ventricular leads 17, 19, the power source 126, a reed switch 23 operable by an external magnet, or redundant leads on lines 138d,e. The output comprises latch drivers 134 a-d with respective output select switches 130 a-d selectively operable to supply stimulation pulses to the leads or allow sensing. External apparatus 104 may transmit coded information to change the stored program or operation of the reed switch may select a different program starting address. Pulse width, rate and amplitude may be controlled in response to sensed heart activity or power source level and different pacing modes (demand, asynchronous, etc.) or multi-site pacing to disrupt arrhythmias may be selected automatically or externally. In an aid converter 308 (Figure 8), counter 400 counts up the output of VCO 402 controlled by unknown signal V(X) and then counts down to zero the output of VCO 402 then controlled by reference EREF and during such countdown a counter 412 counts clock pulses so that when counter 400 reaches zero the output of counter 412 depends on V(X) but not on the scale factor of VCO 402. <IMAGE>
SE7906205A 1978-07-20 1979-07-19 IMPLANTABLE HEART STIMULATOR SE445176B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US92630378A 1978-07-20 1978-07-20

Publications (2)

Publication Number Publication Date
SE7906205L true SE7906205L (en) 1980-01-21
SE445176B SE445176B (en) 1986-06-09

Family

ID=25453021

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7906205A SE445176B (en) 1978-07-20 1979-07-19 IMPLANTABLE HEART STIMULATOR

Country Status (8)

Country Link
JP (1) JPS5521990A (en)
AU (2) AU536053B2 (en)
DE (2) DE2954642C2 (en)
FR (2) FR2431296A1 (en)
GB (2) GB2079610B (en)
IT (1) IT1118131B (en)
NL (1) NL7905649A (en)
SE (1) SE445176B (en)

Families Citing this family (106)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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US4273132A (en) * 1978-11-06 1981-06-16 Medtronic, Inc. Digital cardiac pacemaker with threshold margin check
US4295474A (en) * 1979-10-02 1981-10-20 The Johns Hopkins University Recorder with patient alarm and service request systems suitable for use with automatic implantable defibrillator
US4278094A (en) * 1979-10-10 1981-07-14 Medtronic, Inc. Pacemaker with pulse width adjustment circuitry
US4284082A (en) * 1979-12-12 1981-08-18 Medtronic B.V.Kerkrade Ventricular synchronized atrial pacemaker and method of operation
US4388927A (en) * 1979-12-13 1983-06-21 American Hospital Supply Corporation Programmable digital cardiac pacer
FR2471789A1 (en) * 1979-12-18 1981-06-26 Cardiofrance Co MULTIPURPOSE IMPLANTABLE CARDIAC STIMULATOR AND METHOD OF USING THE STIMULATOR
DE3172870D1 (en) * 1980-04-07 1985-12-19 Medtronic Inc Demand pacemaker with output pulse artifact rejection
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DE3153780C2 (en) * 1980-10-16 2003-04-03 Ela Medical Sa Implantable cardiac pacemaker control system
FR2492262B1 (en) * 1980-10-16 1987-02-20 Ela Medical Sa METHOD AND DEVICE FOR CONTROLLING AN APPARATUS OR INSTRUMENT, IN PARTICULAR AN IMPLANTABLE HEART STIMULATOR
FR2492552A1 (en) * 1980-10-16 1982-04-23 Ela Medical Sa CONTROL DEVICE FOR AN IMPLANTABLE MEDICAL INSTRUMENT SUCH AS A HEART STIMULATOR AND HEART STIMULATOR COMPRISING THIS DEVICE
US4485818A (en) * 1980-11-14 1984-12-04 Cordis Corporation Multi-mode microprocessor-based programmable cardiac pacer
US4374382A (en) * 1981-01-16 1983-02-15 Medtronic, Inc. Marker channel telemetry system for a medical device
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Also Published As

Publication number Publication date
FR2445659A1 (en) 1980-07-25
DE2929498C2 (en) 1991-07-11
JPS5521990A (en) 1980-02-16
AU536053B2 (en) 1984-04-19
GB2079610B (en) 1983-04-07
AU4898979A (en) 1980-01-24
AU584310B2 (en) 1989-05-25
FR2431296B1 (en) 1984-01-06
FR2431296A1 (en) 1980-02-15
GB2026870B (en) 1982-12-15
JPS6241032B2 (en) 1987-09-01
DE2954642C2 (en) 1991-11-07
AU3271384A (en) 1984-12-20
SE445176B (en) 1986-06-09
DE2929498A1 (en) 1980-01-31
GB2079610A (en) 1982-01-27
GB2026870A (en) 1980-02-13
FR2445659B1 (en) 1985-11-29
IT7949768A0 (en) 1979-07-16
NL7905649A (en) 1980-01-22
IT1118131B (en) 1986-02-24

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