US5419337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-invasive multi-electrocardiographic apparatus and method of assessing acute ischaemic damage
Assignee: University of Ulster
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Filing: 1993-02-11
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Granted: 1995-05-30
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Expires: 2013-02-11
Abstract
Abstract An apparatus for the detection, recording and analysis of the electrical activity of a cardiac comprises an array of from 40 to 100 electrodes each capable of detecting an electrical signal associated with the ST component of a heartbeat. The array is connected to a microprocessor controlled interface which in turn is connected to a microprocessor controlled analyser and display apparatus.
Inventors
- 👤 George J. Dempsey
- 👤 John M. Anderson
- 👤 Agnes A. Adgey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:53
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/316; A61B5/318; A61B5/346; A61B5/349; A61B5/35; A61B5/25; A61B5/279; A61B5/28; A61B5/282; A61B5/332; A61B2562/00; A61B2562/04; A61B2562/046
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
92 words
An apparatus for the detection and display of the electrical activity of an animal heart, said apparatus comprising: a 2-dimensional array of a number n of electrodes, where n is an integer from 40 to 100, for individually detecting an electrical signal associated with the ST component of a heartbeat, interface means for converting an output signal of each electrode to digital form, and display means responsive to the digital signals to provide a 3-dimensional graphical display of the ST component levels detected by the electrodes as a measure of cardiac condition.
Claim 2
Independent Claim
92 words
An apparatus for the detection and display of the electrical activity of an animal heart, said apparatus comprising: a 2-dimensional array of a number n of electrodes, where n is an integer from 40 to 100, for individually detecting an electrical signal associated with the ST component of a heartbeat, interface means for converting an output signal of each electrode to digital form, and display means responsive to the digital signals to provide a 3-dimensional graphical display of the ST component levels detected by the electrodes as a measure of cardiac condition.
Claim 3
Dependent Claim
63 words
An apparatus as claimed in claim 1, wherein the interface means includes a respective amplifying and sample/hold means for each electrical signal, a plurality of multiplexers less than the number of electrodes, each multiiplexer having a plurality of inputs respectively connected to the outputs of a plurality of sample/hold means, and an analog to digital converter connected to the output of each multiplexer.
Claim 4
Dependent Claim
16 words
An apparatus as claimed in claim 2, wherein each multiplexer has from 2 to 20 inputs.
Claim 5
Dependent Claim
24 words
An apparatus as claimed in claim 1, wherein the detection and display apparatus includes means for recording the digital signals onto a memory card.
Claim 6
Independent Claim
89 words
A method for the detection and display of the electrical activity of an animal heart, comprising the steps of: applying to the torso of the animal a 2-dimensional array of a number n of electrodes, where n is an integer from 40 to 100, detecting with each electrode an electrical signal associated with the ST component of a heartbeat, converting an analog output signal from each electrode to digital form, and producing from the digital signals a 3-dimensional graphical display of the ST component levels detected by the electrodes.
Claim 7
Independent Claim
89 words
A method for the detection and display of the electrical activity of an animal heart, comprising the steps of: applying to the torso of the animal a 2-dimensional array of a number n of electrodes, where n is an integer from 40 to 100, detecting with each electrode an electrical signal associated with the ST component of a heartbeat, converting an analog output signal from each electrode to digital form, and producing from the digital signals a 3-dimensional graphical display of the ST component levels detected by the electrodes.
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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) | 1998-05-29 | 1998-11-28 | 1999-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-05-29 | 2002-11-28 | 2003-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-05-29 | 2006-11-28 | 2007-05-30 | $7700.00 | Window Closed / Lapsed |