US5792208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heart pacemaker
Assignee: GRAEMED Pty Ltd
•
Filing: 1997-06-30
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Granted: 1998-08-11
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Expires: 2017-06-30
Abstract
Abstract A heart pacemaker which is arranged to stimulate the apical area of the heart. Stimulation of this area provides synchronous mechanical contraction of the left and right ventricles and overcomes the problem of pacemaker induced left bundle branch block type conduction disturbance. The pacemaker has a base surface which conforms to the apical area of the heart and mounts a plurality of epicardial stimulating electrodes. Selection of electrodes can be made to provide the most clinically appropriate stimulation. An opposite side of the pacemaker is arranged to contact the diaphragm and is proved with sensing electrodes to sense activity of the diaphragm and adjust pacing of the heart in accordance with changes in physical activity of the patient. The electrodes used are preferably of capacitive construction, having first and second capacitive plates either side of a dielectric formed by he body of the pacemaker.
Inventors
- 👤 Noel Domond Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:54
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/362; A61N1/365; A61N1/368; A61N1/3686; A61N1/02; A61N1/04; A61N1/05; A61N1/0587; A61N1/36514; A61N1/36542; A61N1/372; A61N1/375; A61N1/37512; A61N1/3756
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
82 words
A heart pacemaker, comprising a housing containing a pulse generator means for providing cardiac stimulating pulses, the housing comprising a base member mounting at least one pacing electrode, the pacing electrode being constructed in the form of a capacitor and comprising a first capacitive plate on an outer surface of the base member, a dielectric and a second capacitive plate on the inner surface of the base member within the housing, said pulse generator means providing said pulses to said pacing electrode.
Claim 2
Dependent Claim
82 words
A heart pacemaker, comprising a housing containing a pulse generator means for providing cardiac stimulating pulses, the housing comprising a base member mounting at least one pacing electrode, the pacing electrode being constructed in the form of a capacitor and comprising a first capacitive plate on an outer surface of the base member, a dielectric and a second capacitive plate on the inner surface of the base member within the housing, said pulse generator means providing said pulses to said pacing electrode.
Claim 3
Dependent Claim
16 words
A heart pacemaker in accordance with claim 1, the dielectric being formed by the base member.
Claim 4
Dependent Claim
55 words
A heart pacemaker in accordance with claim 1, the base member being arranged to fit to the apex of the heart such that the pacing electrode is able to provide stimulation to the apex of the heart, and wherein the pulse generator means causes the electrode to provide cardiac stimulating pulses to the apical area.
Claim 5
Dependent Claim
58 words
A heart pacemaker in accordance with claim 3, wherein a plurality of sensing electrodes are mounted on the base member for sensing electrical activity of the heart and for providing the sensed electrical activity to the pulse generator means, the plurality of sensing electrodes being placed so as to be positioned about the apical area of the heart.
Claim 6
Dependent Claim
26 words
A heart pacemaker in accordance with claim 4, the sensing and pacing electrodes being arranged in a ring array on the surface of the base member.
Claim 7
Dependent Claim
70 words
An electrode arrangement for a heart pacemaker, comprising a base member mounting a plurality of pairs of capacitive plates, one capacitive plate in each pair being arranged on an outer surface of the base member for contact with heart tissue, and the other capacitive plate in each pair being mounted on the inner surface of the base member opposite the first capacitive plate, whereby to form a capacitive electrode array.
Claim 8
Dependent Claim
70 words
An electrode arrangement for a heart pacemaker, comprising a base member mounting a plurality of pairs of capacitive plates, one capacitive plate in each pair being arranged on an outer surface of the base member for contact with heart tissue, and the other capacitive plate in each pair being mounted on the inner surface of the base member opposite the first capacitive plate, whereby to form a capacitive electrode array.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-08-10 | 2002-02-09 | 2002-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-10 | 2006-02-09 | 2006-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-10 | 2010-02-09 | 2010-08-11 | $7700.00 | Window Closed / Lapsed |