US4478223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three dimensional electrocardiograph
Assignee: Individual
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Filing: 1982-12-06
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Granted: 1984-10-23
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Expires: 2002-12-06
Abstract
Abstract This invention relates to a system for the clinical measurement of the electrical potential of a biological system using non-invasive monitoring equipment.
Inventors
- 👤 Douglas R. Allor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:44
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/316; A61B5/318; A61B5/339; A61B5/341; A61B5/30; A61B5/307; A61B5/308; A61B5/31
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
177 words
Means for the non-invasive real time three-dimensional analysis of the electrical activity of a patient's organ comprising: a first set of paired electrodes, a first preamplification means for developing a first modulated electrical signal characteristic of the plane through the organ represented by said first electrodes based on the electrical signals received from said first electrodes; a second set of paired electrodes, a second preamplification means for developing a second modulated electrical signal characteristic of the plane through the organ represented by said second electrodes based on the electrical signals received from said second electrodes; a third set of paired electrodes, a third preamplification means for developing a third modulated electrical signal characteristic of the plane through the organ represented by said third electrodes based on the electrical signals received from said third electrodes; signal means for modifying and amplifying said first, second, and third modulated electrical signals; and means for receiving said first, second, and third amplified modulated signals and analyzing said signals in a three-dimensional coordinate system based on the phase differences between said signals.
Claim 2
Dependent Claim
177 words
Means for the non-invasive real time three-dimensional analysis of the electrical activity of a patient's organ comprising: a first set of paired electrodes, a first preamplification means for developing a first modulated electrical signal characteristic of the plane through the organ represented by said first electrodes based on the electrical signals received from said first electrodes; a second set of paired electrodes, a second preamplification means for developing a second modulated electrical signal characteristic of the plane through the organ represented by said second electrodes based on the electrical signals received from said second electrodes; a third set of paired electrodes, a third preamplification means for developing a third modulated electrical signal characteristic of the plane through the organ represented by said third electrodes based on the electrical signals received from said third electrodes; signal means for modifying and amplifying said first, second, and third modulated electrical signals; and means for receiving said first, second, and third amplified modulated signals and analyzing said signals in a three-dimensional coordinate system based on the phase differences between said signals.
Claim 3
Dependent Claim
25 words
The system of claim 1 further including means for plotting a three-dimensional representation of the conductive potential of the organ on a permanent substrate material.
Claim 4
Dependent Claim
14 words
The system of claim 1 wherein said analysis means is a cathode ray tube.
Claim 5
Dependent Claim
18 words
The system of claim 1 wherein said preamplification means includes bandpass filter means for minimizing extraneous electrical interference.
Claim 6
Dependent Claim
19 words
The system of claim 4 wherein said bandpass filter means operates in the range of 5 to 1000 Hz.
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) | 1987-10-23 | 1988-04-23 | 1988-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-23 | 1992-04-23 | 1992-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-23 | 1996-04-23 | 1996-10-23 | $7700.00 | Window Closed / Lapsed |