GB1394412A - Radiofrequency powered cardiac pacemaker unit - Google Patents

Radiofrequency powered cardiac pacemaker unit

Info

Publication number
GB1394412A
GB1394412A GB2307473A GB2307473A GB1394412A GB 1394412 A GB1394412 A GB 1394412A GB 2307473 A GB2307473 A GB 2307473A GB 2307473 A GB2307473 A GB 2307473A GB 1394412 A GB1394412 A GB 1394412A
Authority
GB
United Kingdom
Prior art keywords
powered
heart
pulses
rectifier
pacer
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
GB2307473A
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.)
Sorin SpA
Original Assignee
Sorin SpA
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 Sorin SpA filed Critical Sorin SpA
Publication of GB1394412A publication Critical patent/GB1394412A/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

Abstract

1394412 Heart pacemakers SORIN SOC RICERCHE IMPIANTI NUCLEARI SpA 15 May 1973 [25 May 1972] 23074/73 Heading A5R An implantable heart pacemaker is powered in use by received radio-frequency energy and comprises a tuned receiver/rectifier 48, 50, 52 operable to give on an output terminal 44 heart stimulation pulses in response to receiving transmitted radio-frequency energy which is pulse-modulated at a pulse repetition frequency equal to the desired heart stimulation rate, an input terminal 42 for connection to the output of a separate heart pacemaker and a remotely controllable switch operable selectively to make or break a connection between input terminal 42 and output terminal 44. The switch may be a bistable reed switch operable by a magnet external to the patient's body and being held in a first state by mechanical biassing and in the second state by an internal biassing magnet. In a second embodiment negative pulses applied to input terminal 42 by a battery-powered pacer keep transistor 66 conducting to transmit the pulses via d-c blocking capacitor 62 to output terminal 44. When the r.f. signal is received by receiver/rectifier 48, 50, 52 it is also received by receiver/rectifier 72, 74, 76 to give signals via filter 78, 84 to turn on transistor 68 whereby transistor 66 is cut-off preventing the battery-powered pacer pulses from reaching terminal 44 and presenting this pacer with no appreciable load whereby battery energy is conserved.
GB2307473A 1972-05-25 1973-05-15 Radiofrequency powered cardiac pacemaker unit Expired GB1394412A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT6866172A IT958976B (en) 1972-05-25 1972-05-25 RADIOFREQUENCY POWERED AC HEART STIMULATION DEVICE THAT CAN BE CONNECTED TO A BATTERY-POWERED CAR DIAC STIMULATOR THAT ALLOWS THE SELECTION BETWEEN BATTERY STIMULATION AND RADIOFREQUENCY POWER STIMULATION

Publications (1)

Publication Number Publication Date
GB1394412A true GB1394412A (en) 1975-05-14

Family

ID=11310205

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2307473A Expired GB1394412A (en) 1972-05-25 1973-05-15 Radiofrequency powered cardiac pacemaker unit

Country Status (6)

Country Link
AR (1) AR200262A1 (en)
DE (1) DE2326864A1 (en)
ES (2) ES414933A1 (en)
FR (1) FR2185384B3 (en)
GB (1) GB1394412A (en)
IT (1) IT958976B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1339452B1 (en) * 2000-11-03 2007-01-03 Medtronic, Inc. Mems switching circuit and method for an implantable medical device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952750A (en) 1974-04-25 1976-04-27 Mieczyslaw Mirowski Command atrial cardioverting device
DE2616297C2 (en) * 1975-04-17 1984-10-31 The Johns Hopkins University, Baltimore, Md. Rechargeable electrical body tissue stimulator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1339452B1 (en) * 2000-11-03 2007-01-03 Medtronic, Inc. Mems switching circuit and method for an implantable medical device

Also Published As

Publication number Publication date
AR200262A1 (en) 1974-10-31
IT958976B (en) 1973-10-30
FR2185384A1 (en) 1974-01-04
ES415115A1 (en) 1976-02-16
FR2185384B3 (en) 1976-05-14
ES414933A1 (en) 1976-02-01
DE2326864A1 (en) 1973-12-06

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Legal Events

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