US5662108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophysiology mapping system
Assignee: St Jude Medical Atrial Fibrillation Division Inc
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Filing: 1995-04-12
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Granted: 1997-09-02
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Expires: 2015-04-12
Abstract
Abstract A mapping catheter is positioned in a heart chamber, and active electrode sites are activated to impose an electric field within the chamber. The blood volume and wall motion modulates the electric field, which is detected by passive electrode sites on the preferred catheter. Electrophysiology measurements, as well as geometry measurements, are taken from the passive electrodes and used to display a map of intrinsic heart activity.
Inventors
- 👤 Jeffrey Robert Budd
- 👤 Graydon Ernest Beatty
- 👤 John Anderson Hauck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:52
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/68; A61B5/6846; A61B5/6847; A61B5/6852; A61B5/6853; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1492; A61B5/05; A61B5/053; A61B5/0538; A61B5/103; A61B5/107; A61B5/1076; A61B5/24; A61B5/25; A61B5/279; A61B5/28; A61B5/282; A61B5/283; A61B5/287; A61B5/30; A61B5/307; A61B5/308; A61B5/6858; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/362; A61N1/3625; A61N1/37; A61N1/3702; A61B18/18; A61B18/1815; A61B18/20; A61B18/22; A61B18/24; A61B2018/00053; A61B2018/00214; A61B2018/0022; A61B2018/00267; A61B2018/00315; A61B2018/00345; A61B2018/00351; A61B2018/00571; A61B2018/00577; A61B2018/00636; A61B2018/00773; A61B2018/00839; A61B2018/00875; A61B2018/00892; A61B90/00; A61B90/06; A61B2090/061; A61B2560/00; A61B2560/04; A61B2560/0443; A61B2560/045; A61B2562/00; A61B2562/04; A61B2562/043; A61B2562/046; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A process for measuring electrophysiologic data in a heart chamber comprising the steps of: (a) positioning a set of passive electrodes within a patient's heart; (b) positioning a set of active electrodes within a patient's heart; (c) supplying oscillating current to said set of active electrodes thereby generating an electric field in said heart chamber; (d) detecting said electric field at said passive electrode sites, generating a set of electric field measurement data; (e) extracting in the frequency domain, from said field measurement data, that component of said field measurement data corresponding to chamber geometry and generating chamber geometry data; (f) extracting in the frequency domain, from said field measurement data, that component of said field measurement data corresponding to the underlying intrinsic electrophysiologic activity of the heart chamber, and generating electrophysiology data; (g) graphically displaying said chamber geometry data; (h) graphically displaying said electrophysiologic data.
Claim 2
Dependent Claim
146 words
A process for measuring electrophysiologic data in a heart chamber comprising the steps of: (a) positioning a set of passive electrodes within a patient's heart; (b) positioning a set of active electrodes within a patient's heart; (c) supplying oscillating current to said set of active electrodes thereby generating an electric field in said heart chamber; (d) detecting said electric field at said passive electrode sites, generating a set of electric field measurement data; (e) extracting in the frequency domain, from said field measurement data, that component of said field measurement data corresponding to chamber geometry and generating chamber geometry data; (f) extracting in the frequency domain, from said field measurement data, that component of said field measurement data corresponding to the underlying intrinsic electrophysiologic activity of the heart chamber, and generating electrophysiology data; (g) graphically displaying said chamber geometry data; (h) graphically displaying said electrophysiologic data.
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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) | 2000-09-01 | 2001-03-03 | 2001-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-01 | 2005-03-03 | 2005-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-01 | 2009-03-03 | 2009-09-02 | $7700.00 | Window Closed / Lapsed |