Patent US3977403A successfully refreshed from Google Patents.
Patent US5385148A successfully refreshed from Google Patents.
US5385148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cardiac imaging and ablation catheter
Assignee: University of California
•
Filing: 1993-07-30
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Granted: 1995-01-31
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Expires: 2013-07-30
Abstract
Abstract Method and apparatus for ablation of cardiac tissue includes a catheter (2, 60) having an elongated flexible body (6, 64), a tissue characterization assembly including a transducer (34) at the distal end (16) of the body and a tissue ablation assembly having a tissue ablation tip (32) at the distal end of the body. The tissue ablation tip is positioned adjacent the tissue to be ablated using the visualization assembly and then activated.
Inventors
- 👤 Michael D. Lesh
- 👤 Patrick M. Owens
- 👤 Jerome Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:23
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1492; A61B8/00; A61B8/12; A61B8/44; A61B8/4444; A61B8/445; A61B2018/00982; A61B34/00; A61B34/20; A61B2034/2046; A61B2034/2063; A61B90/00; A61B90/36; A61B90/37; A61B2090/378; A61B2090/3782; A61B90/39; A61B2090/3925; A61B2090/3929
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
91 words
A method for ablation of arrythmogenic cardiac tissue comprising: selecting a catheter comprising: an elongated flexible body having a proximal end and a distal end, an ultrasound assembly having a transducer located at the distal end of the body, and a tissue ablation means; introducing the distal end of the catheter into a cardiac chamber comprising the arrythmogenic cardiac tissue to be ablated; using the ultrasound assembly to position the tissue ablation means within an effective range of the arrythmogenic cardiac tissue to be ablated; and activating the tissue ablation means.
Claim 2
Independent Claim
91 words
A method for ablation of arrythmogenic cardiac tissue comprising: selecting a catheter comprising: an elongated flexible body having a proximal end and a distal end, an ultrasound assembly having a transducer located at the distal end of the body, and a tissue ablation means; introducing the distal end of the catheter into a cardiac chamber comprising the arrythmogenic cardiac tissue to be ablated; using the ultrasound assembly to position the tissue ablation means within an effective range of the arrythmogenic cardiac tissue to be ablated; and activating the tissue ablation means.
Claim 3
Dependent Claim
27 words
The method of claim 1, wherein the step of selecting the catheter further includes selecting a catheter having tissue ablation means including means for delivering electromagnetic radiation.
Claim 4
Dependent Claim
27 words
The method of claim 1, further comprising the step of monitoring the ablation of the tissue using the ultrasound assembly, so that only desired tissue is ablated.
Claim 5
Dependent Claim
29 words
The method of claim 1, wherein the step of activating the ablation means includes delivering electromagnetic radiation selected from the group consisting of radio frequency, laser, and microwave radiation.
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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) | 1998-01-30 | 1998-08-01 | 1999-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-01-30 | 2002-08-01 | 2003-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-01-30 | 2006-08-01 | 2007-01-31 | $7700.00 | Window Closed / Lapsed |