Patent US3738370A successfully refreshed from Google Patents.
US3738370A
Expired / Lapsed
US
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Method of defibrillating a malfunctioning heart by means of electrodes located within the atrium
Assignee: Individual
•
Filing: 1971-01-18
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Granted: 1973-06-12
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Expires: 1991-01-18
Abstract
Abstract A bi-polar coaxial cable or catheter is passed transvenously into the right atrium or auricle of the heart, and the electrodes or poles of the cable are so positioned within the atrium and exposed to the interior of the atrium that when the cable is connected to a defibrillator unit, direct current shocks of very low energy or intensity may be transmitted by said unit through the cable to effect defibrillation, without causing pain or appreciable discomfort to the patient undergoing defibrillation.
Inventors
- 👤 B Charms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:00
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056; A61N1/18; A61N1/32; A61N1/38; A61N1/39; A61N1/3956
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
84 words
In a method of defibrillating a malfunctioning heart, the steps of introducing a pair of electrical conductors transvenously into the right atrium of the heart, positioning said conductors within the atrium in widely spaced relation to each other, to thereby provide spaced poles located entirely within the atrium generating electrical impulses of an intensity of from 1 to 10 watt seconds sufficient to cause defibrillation of the heart, and delivering said impulses to said poles for a period of from 3 to 100 milliseconds.
Claim 2
Dependent Claim
84 words
In a method of defibrillating a malfunctioning heart, the steps of introducing a pair of electrical conductors transvenously into the right atrium of the heart, positioning said conductors within the atrium in widely spaced relation to each other, to thereby provide spaced poles located entirely within the atrium generating electrical impulses of an intensity of from 1 to 10 watt seconds sufficient to cause defibrillation of the heart, and delivering said impulses to said poles for a period of from 3 to 100 milliseconds.
Claim 3
Dependent Claim
18 words
The method, as defined in claim 1, wherein said poles are disposed adjacent the wall of the atrium.
Claim 4
Dependent Claim
18 words
The method, as defined in claim 1, wherein said poles are disposed at diametrically-opposite sides of the atrium.
Claim 5
Dependent Claim
14 words
The method, as defined in claim 1, wherein said impulses are direct current impulses.
Claim 6
Dependent Claim
26 words
The method, as defined in claim 1, wherein said electrical impulses or shocks are generated externally of the body of the person who is being defibrillated.
Claim 7
Dependent Claim
25 words
The method, as defined in claim 1, wherein said electrical impulses or shocks are generated within the body of the person who is being defibrillated.
Claim 8
Dependent Claim
37 words
The method, as recited in claim 1, wherein Said placement of the poles is effected by coiling the leading portions of said conductors about the atrium in closely spaced relation to the inner wall of the atrium.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |