Patent EP0500289A1 successfully refreshed from Google Patents.
EP0500289A1
Expired / Lapsed
EP
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Systems and methods for defibrillation and cardioversion
Assignee: Cardiac Pathways Corp
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Filing: 1992-02-17
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Granted: —
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Expires: 2012-02-17
Abstract
Abstract Endocardial catheter (11) for introduction into a lumen of a vessel leading to a chamber formed by the wall of a heart of a patient comprising a flexible elongate tubular member (12) having proximal and distal extremities (13,14) and having a longitudinal axis. An electrode (21) having radially spaced apart electrode portions is provided. An expandable device (26) movable between contracted and expanded positions is secured to the distal extremity (14) of the flexible elongate tubular member (12). The expandable device (26) has an outer surface upon which the electrode (21) is mounted. An elongate element is secured to the expandable device (26) for moving the expandable device to the expanded position to thereby move the electrode (21) into engagement with the wall forming the chamber of the heart. An additional electrode (46) is mounted on the flexible elongate tubular member (12) in relatively close proximity to the first named electrode (21). Leads (42, 47) are connected to the electrode (21) and to the additional electrode (46) and extend to the proximal extremity of the flexible elongate member (12).
Inventors
- 👤 Mir A. Imran
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 11:31
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/38; A61N1/39; A61N1/3956; A61N1/02; A61N1/04; A61N1/05; A61N1/056; A61N1/0563
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
179 words
In a system for defibrillation and cardioversion, an endocardial catheter for introduction into a chamber formed by a wall of the heart and consisting of a flexible elongate tubular member having a proximal extremity and a distal extremity and having a longitudinal axis, electrode means having radially spaced apart electrode portions, expandable means movable between contracted and expanded positions secured to distal extremity of the flexible elongate tubular member, said expandable means including an outer surface, means securing said electrode means to said outer surface, means secured to said expandable means for moving said expandable means to said expanded position to move the electrode means into engagement with the wall forming the chamber of the heart in which the expandable means is disposed, an additional electrode carried by the flexible elongate tubular member in relatively close proximity to the electrode means, lead means connected to the electrode means and to the additional electrode and extending to the proximal extremity of the flexible elongate member and an AICD device connected to said leads for supplying electrical energy to said leads.
Claim 2
Dependent Claim
179 words
In a system for defibrillation and cardioversion, an endocardial catheter for introduction into a chamber formed by a wall of the heart and consisting of a flexible elongate tubular member having a proximal extremity and a distal extremity and having a longitudinal axis, electrode means having radially spaced apart electrode portions, expandable means movable between contracted and expanded positions secured to distal extremity of the flexible elongate tubular member, said expandable means including an outer surface, means securing said electrode means to said outer surface, means secured to said expandable means for moving said expandable means to said expanded position to move the electrode means into engagement with the wall forming the chamber of the heart in which the expandable means is disposed, an additional electrode carried by the flexible elongate tubular member in relatively close proximity to the electrode means, lead means connected to the electrode means and to the additional electrode and extending to the proximal extremity of the flexible elongate member and an AICD device connected to said leads for supplying electrical energy to said leads.
Claim 3
Dependent Claim
39 words
A system as in Claim 1 wherein said AICD device includes a bore through which the pull wire extends and means for securing the pull wire in a predetermined position in said bore with respect to said AICD device.
Claim 4
Dependent Claim
53 words
A system as in Claim 1 or Claim 2 together with first and second bipolar electrodes carried by the expandable means, leads connected to the bipolar electrodes and extending to the proximal extremity of the flexible elongate member and means for connecting the leads connected to the bipolar electrodes to the AICD device.
Claim 5
Dependent Claim
118 words
In a method for creating defibrillations and car- dioversions in a heart of a patient by the use of a catheter consisting of a flexible elongate element having proximal and distal extremities, electrode means having radially spaced apart electrode portions and expandable means secured to the distal extremity of the catheter movable between contracted and expanded positions and carrying said electrode means, the method comprising the steps of introducing the expandable member with the electrode means carried into a chamber of the heart of the patient, expanding the expandable means to move the electrode means carried by the expandable means into engagement with the wall forming the chamber of the heart and supplying energy to the electrode means.
Claim 6
Dependent Claim
118 words
In a method for creating defibrillations and car- dioversions in a heart of a patient by the use of a catheter consisting of a flexible elongate element having proximal and distal extremities, electrode means having radially spaced apart electrode portions and expandable means secured to the distal extremity of the catheter movable between contracted and expanded positions and carrying said electrode means, the method comprising the steps of introducing the expandable member with the electrode means carried into a chamber of the heart of the patient, expanding the expandable means to move the electrode means carried by the expandable means into engagement with the wall forming the chamber of the heart and supplying energy to the electrode means.
Claim 7
Dependent Claim
33 words
A method as in Claim 4 together with the step of sensing the R wave of the heart and introducing energy into the heart in a predetermined relationship with respect to the R-wave.
References Cited (Backward Citations)
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