GB1303016A - - Google Patents

Info

Publication number
GB1303016A
GB1303016A GB5247771A GB5247771A GB1303016A GB 1303016 A GB1303016 A GB 1303016A GB 5247771 A GB5247771 A GB 5247771A GB 5247771 A GB5247771 A GB 5247771A GB 1303016 A GB1303016 A GB 1303016A
Authority
GB
United Kingdom
Prior art keywords
capacitor
pacemaker
turned
transistors
pulse rate
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
GB5247771A
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 filed Critical
Publication of GB1303016A publication Critical patent/GB1303016A/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
    • A61N1/372—Arrangements in connection with the implantation of stimulators
    • A61N1/378—Electrical supply
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/30—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using a transformer for feedback, e.g. blocking oscillator

Abstract

1303016 Heart pace-makers ESB INC 11 Nov 1971 [11 Dec 1970] 52477/71 Heading ASR [Also in Division H3] A pulse generator in a beam pacemaker is supplied by parallel connected batteries such that if one battery fails the pulse rate changes. This will give an external indication of the failure. The generator shown is of blocking oscillator type in which a timing capacitor is charged through resistors until transistor 25 starts to conduct, whereupon, by regenerative action both transistors 25 and 26 are turned on and then turned off. During the on period the capacitor is discharged and the transistors accordingly remain off until the capacitor has recharged. The supply is obtained from three parallel batteries connected to the supply line via isolating diodes and to the charging circuit via resistors 50, 52, 54. If a battery fails the charging current through the corresponding resistor falls and the pulse rate reduces. The pacemaker may be as shown in Fig. 2, one electrode being the side wall and the other a pole (72) in the form of a transvenous catheta for connection to the endocardium.
GB5247771A 1970-12-11 1971-11-11 Expired GB1303016A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9725470A 1970-12-11 1970-12-11

Publications (1)

Publication Number Publication Date
GB1303016A true GB1303016A (en) 1973-01-17

Family

ID=22262485

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5247771A Expired GB1303016A (en) 1970-12-11 1971-11-11

Country Status (12)

Country Link
US (1) US3738371A (en)
BE (1) BE776557A (en)
BR (1) BR7108014D0 (en)
CA (1) CA984467A (en)
CH (1) CH546573A (en)
DE (1) DE2160727A1 (en)
DK (1) DK143934C (en)
FR (1) FR2117641A5 (en)
GB (1) GB1303016A (en)
IT (1) IT953203B (en)
SE (1) SE383259B (en)
ZA (1) ZA717641B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0682947A1 (en) 1994-05-19 1995-11-22 Mitsubishi Chemical Corporation Medicament for therapeutic and prophylactic treatment of diseases caused by smooth muscle cell hyperplasia

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3893462A (en) * 1972-01-28 1975-07-08 Esb Inc Bioelectrochemical regenerator and stimulator devices and methods for applying electrical energy to cells and/or tissue in a living body
US3882322A (en) * 1973-01-26 1975-05-06 Medtronic Inc Pulse generator
US3946375A (en) * 1974-10-07 1976-03-23 The Boeing Company Redundant DC power supply for analog computers and the like
US4120307A (en) * 1976-10-26 1978-10-17 Medtronic, Inc. Cardiac pacemaker
US4958632A (en) * 1978-07-20 1990-09-25 Medtronic, Inc. Adaptable, digital computer controlled cardiac pacemaker
US4276883A (en) * 1978-11-06 1981-07-07 Medtronic, Inc. Battery monitor for digital cardiac pacemaker
DE2913399A1 (en) * 1979-03-31 1980-10-09 Biotronik Mess & Therapieg CIRCUIT FOR CHECKING THE BATTERY STATUS OF A PACEMAKER
US4345603A (en) * 1980-02-19 1982-08-24 Pacesetter Systems, Inc. Implantable battery monitoring means and method
US4390020A (en) * 1983-02-17 1983-06-28 Medtronic, Inc. Implantable medical device and power source depletion control therefor
EP0173104B1 (en) * 1984-08-02 1993-05-12 Nec Corporation Power source system comprising a plurality of power sources having negative resistance characteristics
US5076272A (en) * 1990-06-15 1991-12-31 Telectronics Pacing Systems, Inc. Autocontrollable pacemaker with alarm
US6149683A (en) 1998-10-05 2000-11-21 Kriton Medical, Inc. Power system for an implantable heart pump
US6871090B1 (en) * 2000-10-13 2005-03-22 Advanced Bionics Corporation Switching regulator for implantable spinal cord stimulation
US7047079B2 (en) 2002-07-26 2006-05-16 Advanced Neuromodulation Systems, Inc. Method and system for energy conservation in implantable stimulation devices

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3454012A (en) * 1966-11-17 1969-07-08 Esb Inc Rechargeable heart stimulator
US3474353A (en) * 1968-01-04 1969-10-21 Cordis Corp Multivibrator having pulse rate responsive to battery voltage
US3620220A (en) * 1969-10-01 1971-11-16 Cordis Corp Cardiac pacer with redundant power supply

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0682947A1 (en) 1994-05-19 1995-11-22 Mitsubishi Chemical Corporation Medicament for therapeutic and prophylactic treatment of diseases caused by smooth muscle cell hyperplasia

Also Published As

Publication number Publication date
DK143934C (en) 1982-04-19
ZA717641B (en) 1972-08-30
CA984467A (en) 1976-02-24
BR7108014D0 (en) 1973-06-05
SE383259B (en) 1976-03-08
US3738371A (en) 1973-06-12
DK143934B (en) 1981-11-02
DE2160727A1 (en) 1972-06-15
CH546573A (en) 1974-03-15
FR2117641A5 (en) 1972-07-21
IT953203B (en) 1973-08-10
BE776557A (en) 1972-04-04

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee