Patent EP0500215A1 successfully refreshed from Google Patents.
EP0500215A1
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Process and apparatus for mapping of tachyarrhythmia
Assignee: AngeLase Inc
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Filing: 1992-01-24
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Granted: —
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Expires: 2012-01-24
Abstract
Abstract Process and apparatus for mapping of tachyarrhythmia, such as ventricular tachycardia. The apparatus is a mapping catheter which is a polymer member including a plurality of electrodes at a distal end. An upper ring is divided into at least bipolar poles for sensing endocardial potentials. A spaced lower unipolar ring senses intercardiac potentials. The process provides for sensing of a QRS signal with the upper bipolar electrodes, and the unipolar ring provides for sensing of the EKG signal. The mapping catheter is of such a size that the mapping catheter can be inserted up and through a hand-held probe to steer and guide the mapping catheter. An interventional catheter will fit within the mapping catheter for ablation of arrhythmogenic sites. One embodiment is a laser delivery catheter which can include a fiber optic cable, a fixation wire, a metal sensing tip and an internal flushing lumen.
Inventors
- 👤 Robert H. Svenson M.D.
- 👤 Gregory G. Brucker Phd
- 👤 Steven D. Savage
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 16:18
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/25; A61B5/279; A61B5/28; A61B5/283; A61B5/287; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1492; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056; A61B18/02; A61B18/1402; A61B18/18; A61B18/20; A61B18/22; A61B18/24; A61B17/00; A61B17/00234; A61B2017/00238; A61B2017/00243; A61B2017/00292; A61B18/1206; A61B2018/1266; A61M; A61M3/00; A61M3/02; A61M3/0279
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
78 words
A mapping catheter for mapping of active origins of tachyarrhythmia comprising: a. a handle means (16); b. a Y-connector means (18) connected to a proximal end of said handle means; c. a tubular means (14, 24, 46) extended to a distal end of said handle means; d. at least two electrodes (40,42) insulated with respect to each other on a distal end of said tubular means; and e. a unipolar electrode (44) spaced below said distal end electrodes.
Claim 2
Dependent Claim
78 words
A mapping catheter for mapping of active origins of tachyarrhythmia comprising: a. a handle means (16); b. a Y-connector means (18) connected to a proximal end of said handle means; c. a tubular means (14, 24, 46) extended to a distal end of said handle means; d. at least two electrodes (40,42) insulated with respect to each other on a distal end of said tubular means; and e. a unipolar electrode (44) spaced below said distal end electrodes.
Claim 3
Dependent Claim
32 words
A mapping catheter according to Claim 1, wherein said at least two electrodes are for sensing a QRS signal means and said unipolar electrode is for sensing an inter-cardiac or intra-cardiac potential.
Claim 4
Dependent Claim
55 words
A mapping catheter for mapping active sites or other origins of tachyarrhythmia, characterised in that it includes: a flexible catheter having at a distal end thereof at least two electrodes (40, 42) insulated with respect to each other for sensing a QRS signal; and an auxiliary electrode (44) for sensing an inter-cardiac or intra-cardiac potential.
Claim 5
Dependent Claim
55 words
A mapping catheter for mapping active sites or other origins of tachyarrhythmia, characterised in that it includes: a flexible catheter having at a distal end thereof at least two electrodes (40, 42) insulated with respect to each other for sensing a QRS signal; and an auxiliary electrode (44) for sensing an inter-cardiac or intra-cardiac potential.
Claim 6
Dependent Claim
82 words
A mapping catheter according to Claim 3, wherein: the flexible catheter comprises a flexible tube (14) located within a flexible sheath (24) and an annular tip (12) secured to a distal end portion (46) of said tube or said sheath; said at least two electrodes (40, 42) are housed in spaced-apart relation in a distal portion of the tip; and wires (21a, 21b, 21c) for connecting the electrodes to electrical connectors (22a, 22b, 22c) are disposed between said tube and said sheath.
Claim 7
Dependent Claim
48 words
Apparatus for mapping and ablating active sites or other origins of tachyarrhythmia, characterised in that it comprises: a mapping catheter as claimed in any of the preceding claims; and means for connecting at least one of the electrodes to an ablating energy source thereby to ablate said origin.
Claim 8
Dependent Claim
16 words
Apparatus according to Claim 5, wherein said energy source is a source of direct electric current.
Claim 9
Dependent Claim
17 words
Apparatus according to Claim 5, wherein said energy source is a source of radio frequency electric current.
Claim 10
Dependent Claim
14 words
Apparatus according to Claim 5, wherein said energy source is a source of cryroblation.
Claim 11
Dependent Claim
49 words
Apparatus for mapping and ablating active sites or other origins of tachyarrhythmia, characterised in that it comprises: a mapping catheter as claimed in any of Claims 1 to 4; and a laser or other ablation device or operative instrument for insertion through a hollow lumen in the mapping catheter.
Claim 12
Dependent Claim
74 words
A process for mapping active sites or other origins of tachyarrhythmia in a human or animal heart, characterised in that it comprises the steps of: a. inserting a mapping catheter into an inside chamber of the heart; b. positioning spaced electrodes to sense cardiac signals; c. positioning spaced distal insulated bipolar electrodes to sense a QRS signal; and d. positioning a unipolar electrode spaced from said bipolar electrode to sense an inter- cardiac potential.
Claim 13
Dependent Claim
74 words
A process for mapping active sites or other origins of tachyarrhythmia in a human or animal heart, characterised in that it comprises the steps of: a. inserting a mapping catheter into an inside chamber of the heart; b. positioning spaced electrodes to sense cardiac signals; c. positioning spaced distal insulated bipolar electrodes to sense a QRS signal; and d. positioning a unipolar electrode spaced from said bipolar electrode to sense an inter- cardiac potential.
Claim 14
Dependent Claim
57 words
A process for mapping active sites or other origins of tachyarrhythmia in a human or animal heart, characterised in that it comprises: positioning in a chamber of the heart: (a) spaced electrodes to sense a QRS signal, and (b) an auxilliary electrode to sense an inter- cardiac or intra-cardiac potential; and observing signals provided by said electrodes.
Claim 15
Dependent Claim
57 words
A process for mapping active sites or other origins of tachyarrhythmia in a human or animal heart, characterised in that it comprises: positioning in a chamber of the heart: (a) spaced electrodes to sense a QRS signal, and (b) an auxilliary electrode to sense an inter- cardiac or intra-cardiac potential; and observing signals provided by said electrodes.
References Cited (Backward Citations)
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