IT1272265B - Perfezionamento nei sistemi stimolatori cardiaci - Google Patents

Perfezionamento nei sistemi stimolatori cardiaci

Info

Publication number
IT1272265B
IT1272265B ITRM940356A ITRM940356A IT1272265B IT 1272265 B IT1272265 B IT 1272265B IT RM940356 A ITRM940356 A IT RM940356A IT RM940356 A ITRM940356 A IT RM940356A IT 1272265 B IT1272265 B IT 1272265B
Authority
IT
Italy
Prior art keywords
rheography
cardiac stimulator
impedance
switching circuitry
electrodes
Prior art date
Application number
ITRM940356A
Other languages
English (en)
Inventor
Gianni Plicchi
Massimo Ceccarelli
Original Assignee
Medtronic Inc Societa Del Minn
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 Societa Del Minn filed Critical Medtronic Inc Societa Del Minn
Priority to ITRM940356A priority Critical patent/IT1272265B/it
Publication of ITRM940356A0 publication Critical patent/ITRM940356A0/it
Priority to US08/277,051 priority patent/US5501702A/en
Publication of ITRM940356A1 publication Critical patent/ITRM940356A1/it
Application granted granted Critical
Publication of IT1272265B publication Critical patent/IT1272265B/it

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
    • 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
    • A61N1/36514—Heart stimulators controlled by a physiological parameter, e.g. heart potential controlled by a physiological quantity other than heart potential, e.g. blood pressure
    • A61N1/36521—Heart stimulators controlled by a physiological parameter, e.g. heart potential controlled by a physiological quantity other than heart potential, e.g. blood pressure the parameter being derived from measurement of an electrical impedance

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)
  • Hematology (AREA)
  • Electrotherapy Devices (AREA)
  • Prostheses (AREA)
  • Percussion Or Vibration Massage (AREA)

Abstract

Oggetto dell'invenzione è uno stimolatore cardiaco avente una circuiteria di commutazione per riassegnare dinamicamente la funzione elettrica di una pluralità di elettrodi collegati ad esso. Lo stimolatore cardiaco è provvisto di un circuito generatore di impulsi di corrente di reografia per erogare impulsi di corrente agli elettrodi della sorgente di reografia. Lo stimolatore cardiaco è inoltre fornito di un circuito di rivelazione di impedenza per rivelare la tensione e/o l'impedenza percepite dagli elettrodi di registrazione reografica. La circuiteria di commutazione e la sorgente di corrente sono controllate in sincronismo temporizzato, in modo tale che una pluralità di intervalli elementari o finestre di tempo di reografia siano definiti durante un intervallo di rivelazione. Durante ciascuna finestra di tempo. impulsi di corrente di reografia sono applicati a terminali scelti per mezzo della circuiteria di commutazione e l'impedenza viene misurata sui terminali che sono anche scelti dalla
ITRM940356A 1994-06-06 1994-06-06 Perfezionamento nei sistemi stimolatori cardiaci IT1272265B (it)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ITRM940356A IT1272265B (it) 1994-06-06 1994-06-06 Perfezionamento nei sistemi stimolatori cardiaci
US08/277,051 US5501702A (en) 1994-06-06 1994-07-19 Time sharing multipolar rheography apparatus and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITRM940356A IT1272265B (it) 1994-06-06 1994-06-06 Perfezionamento nei sistemi stimolatori cardiaci

Publications (3)

Publication Number Publication Date
ITRM940356A0 ITRM940356A0 (it) 1994-06-06
ITRM940356A1 ITRM940356A1 (it) 1995-12-06
IT1272265B true IT1272265B (it) 1997-06-16

Family

ID=11402581

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM940356A IT1272265B (it) 1994-06-06 1994-06-06 Perfezionamento nei sistemi stimolatori cardiaci

Country Status (2)

Country Link
US (1) US5501702A (it)
IT (1) IT1272265B (it)

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FR2805998B1 (fr) 2000-03-07 2002-10-18 Ela Medical Sa Dispositif medical implantable actif, notamment stimulateur cardiaque, defibrillateur et/ou cardioverteur du type multisite comportant des moyens de mesure d'impedance intracardiaque
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US7447543B2 (en) * 2005-02-15 2008-11-04 Regents Of The University Of Minnesota Pathology assessment with impedance measurements using convergent bioelectric lead fields
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Also Published As

Publication number Publication date
ITRM940356A0 (it) 1994-06-06
ITRM940356A1 (it) 1995-12-06
US5501702A (en) 1996-03-26

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