Patent US3913588A successfully refreshed from Google Patents.
US3913588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heart difibrillator with independently operating starting pulse generator
Assignee: US Philips Corp
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Filing: 1971-03-25
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Granted: 1975-10-21
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Expires: 1991-03-25
Abstract
Abstract A heart defibrillator having mechanical means for producing a mechanical energy pulse which is then converted to an electrical energy pulse by a piezo-electric element, the electrical energy pulse activating a high voltage pulse supplying means which delivers a high voltage pulse to defibrillator electrodes pressed against a patient. Since the high voltage pulse is delivered in response to a pulse which derives its energy from a mechanical rather than an electrical source, inadvertent activation due to electrical open and short circuit malfunctions is avoided.
Inventors
- 👤 Antonius Maria Klomp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:36
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/38; A61N1/39; A61N1/3904
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
91 words
A heart defibrillator comprising: mechanically activatable means for generating a mechanical energy pulse; means responsive to said mechanical energy pulse for converting said mechanical energy pulse into an electrical energy pulse; two electrodes for contacting the body of a patient; means for supplying a high voltage pulse to said electrodes, said pulse supplying means being normally deactivated; and means responsive to said electrical energy pulse for activating said pulse supplying means, whereby a high voltage pulse is supplied to said electrodes upon mechanical activation of said mechanical energy pulse generating means.
Claim 2
Dependent Claim
91 words
A heart defibrillator comprising: mechanically activatable means for generating a mechanical energy pulse; means responsive to said mechanical energy pulse for converting said mechanical energy pulse into an electrical energy pulse; two electrodes for contacting the body of a patient; means for supplying a high voltage pulse to said electrodes, said pulse supplying means being normally deactivated; and means responsive to said electrical energy pulse for activating said pulse supplying means, whereby a high voltage pulse is supplied to said electrodes upon mechanical activation of said mechanical energy pulse generating means.
Claim 3
Dependent Claim
120 words
A heart defibrillator, comprising: a mallet; a releasable pretensioned spring for driving said mallet; a manually operated push button for releasing said pretensioned spring; a piezo-electric element positioned in the path of said mallet to receive a sharp blow from said mallet when said mallet is driven by said spring and to convert the mechanical energy of the mallet into an electrical energy pulse; two electrodes for contacting the body of a patient; means for supplying a high voltage pulse to said electrodes, said pulse supplying means being normally deactivated; and means responsive to said electrical energy pulse for activating said pulse supplying means, whereby a high voltage pulse is supplied to said electrodes upon operation of said push button.
Claim 4
Dependent Claim
120 words
A heart defibrillator, comprising: a mallet; a releasable pretensioned spring for driving said mallet; a manually operated push button for releasing said pretensioned spring; a piezo-electric element positioned in the path of said mallet to receive a sharp blow from said mallet when said mallet is driven by said spring and to convert the mechanical energy of the mallet into an electrical energy pulse; two electrodes for contacting the body of a patient; means for supplying a high voltage pulse to said electrodes, said pulse supplying means being normally deactivated; and means responsive to said electrical energy pulse for activating said pulse supplying means, whereby a high voltage pulse is supplied to said electrodes upon operation of said push button.
References Cited (Backward Citations)
US3224447A
Cited
US3563245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |