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5645580 |
Implantable medical device lead assembly having high efficiency, flexible electrode head
An implantable medical device lead assembly has an electrode head including a flexible tip of elastomeric material embedding at least one rigid or flexible electrode. The at least one electrode and...
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5643255 |
Steerable catheter with rotatable tip electrode and method of use
A catheter, used e.g. for cardiac ablation, has a handle, a shaft, and a J-bendable distal end containing tip and ring electrodes. The tip electrode is axially rotatable and has insulated and...
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5639276 |
Device for use in right ventricular placement and method for using same
A device and method for rapid, atraumatic placement of medical devices in the right ventricle of a patient. The device includes an introducer sheath used as a passage for intravenous placement of a...
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5632734 |
Catheter shape control by collapsible inner tubular member
A composite catheter is formed by the combination of a catheter body and a tubular member insertable or secured inside the catheter body. The tubular member contains a series of relatively rigid...
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5632770 |
Implantable defibrillation system with lead having improved porous surface coating
An implantable defibrillation system with an intercardial or subcutaneous defibrillation electrode is provided wherein the defibrillation electrode includes portions with a porous surface coating...
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5628774 |
Cardiac lead with composite insulating structure
A lead for implantation in a human body exhibits improved combined biodegradation, blood surface compatibility, wear and flexibility characteristics. The lead includes at least one electrode and at...
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5628777 |
Implantable leads incorporating cardiac wall acceleration sensors and method of fabrication
Implantable leads incorporating accelerometer-based cardiac wall motion sensors, and a method of fabricating such leads, are provided. The cardiac wall motion sensors transduce accelerations of...
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5617854 |
Shaped catheter device and method
Pre-shaped cardiac catheters for mapping and selective ablation of a portion of cardiac circuitry includes a preshaped first curved portion for positioning around the ostium of coronary sinus and a...
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5609621 |
Right ventricular outflow tract defibrillation lead
A cardioversion/defibrillation lead and method of implantation thereof for location in a human heart of the type comprising an elongated lead body having proximal and distal end sections and having...
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5609622 |
Implantable electrode with conductive polytetrafluoroethylene elecrode
An implantable electrode in the form a helically wound conductor having an electrically conductive polymeric layer coaxially surrounding and contacting the helically wound conductor, wherein the...
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5607462 |
Catheter assembly, catheter and multi-catheter introducer for use therewith
A assembly for use in performing a medical procedure within a region in a body of a patient having a vessel therein comprising a multi-port introducer adapted to be inserted into a vessel of the...
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5607422 |
Catheter with elongated side electrode
The invention relates to a catheter comprising a tubular body with a distal end. A proximal catheter end is provided with a connector. A flexible catheter section is defined at the distal end. The...
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5603731 |
Method and apparatus for thwarting thrombosis
Thrombosis in a blood vessel is prevented in a patient's body by the steps of positioning an electrically conductive member in an expanded portion of the blood vessel, at a site where the body is...
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5595183 |
Systems and methods for examining heart tissue employing multiple electrode structures and roving electrodes
Systems and methods use an array of multiple electrodes supported for operative association with a region of heart tissue, in tandem with a roving second electrode supported for movement relative...
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5591142 |
Catheter with wire reinforcement having good electrical conductivity
The catheter comprises a generally tubular, thin walled body having a metal wire reinforcing layer defined by metal wires which are woven or wound into a generally cylindrical weave of metal wire...
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5584830 |
Method and system for radiofrequency ablation of cardiac tissue
A system for checking the initial calibration of a temperature measuring device that provides a temperature measuring signal in a catheter includes a comparison unit for comparing the magnitude of...
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5584873 |
Medical lead with compression lumens
A medical electrical lead having a multiple conductors located within an elongated lead body which is provided with multiple conductor lumens each containing a conductor and with at least one...
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5579764 |
Method and apparatus for spatially specific electrophysiological sensing in a catheter with an enlarged ablating electrode
Orthogonal sensors, which are comprised of two or more electrodes and generally disposed circumferentially on the catheter at given longitudinal point along the catheter, receive signals which are...
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5578067 |
Medical electrode system having a sleeve body and control element therefor for selectively positioning an exposed conductor area
An electrode apparatus, such as an intravascular or intracardiac pacemaker or defibrillation electrode with an electrode cable has a jacket of insulation enclosing a first elongated, flexible...
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5578069 |
Electrode deployment mechanism and method using artificial muscle
A lead having a defibrillation electrode that is deployed for defibrillation using artificial muscle. In an undeployed position, the defibrillation electrode is small in diameter so as to be easily...
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5571157 |
Endocardial lead with reduced diameter tip portion and method for making such lead
An endocardial lead assembly, adapted to transmit electrical signals between a proximal end portion of the lead assembly and a distal end portion of the assembly and to thereby stimulate selected...
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5571160 |
Permanently curved sleeve for shaping an electrode cable, and method for implanting the cable with the sleeve
A device for shaping an electrode cable, such as a medical electrode cable for use with a pacemaker, includes a substantially tubular element or sleeve, having a length which is relatively short in...
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5571159 |
Temporary atrial defibrillation catheter and method
Atrial fibrillation disorders are treated by locating low impedance electrodes positioned on a single catheter body passing through the pulmonary artery valve to locate the electrodes respectively...
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5571161 |
Apparatus and method for implanting electrical leads in the heart
A steerable guide catheter for the placement of electrical lead wires useful for cardiac pacemakers and other electrophysiology devices includes an atraumatic balloon at its distal end. The...
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5571162 |
Transvenous defibrillation lead with side hooks
A transvenous implantable defibrillation lead includes a conductor and inner and outer coaxial cylindrical electrodes. The inner electrode is connected to the conductor, and the outer electrode is...
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5571164 |
Cardiac electrode device having at least a portion thereof which is ribbon shaped
An electrode device, for intracardiac stimulation and/or defibrillation of heart tissue and/or sensing heart signals in a patient, has a soft, flexible electrode cable with an outer coating of...
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5569883 |
Joint for providing a secure connection between a wound element and a mating part in a body implantable lead assembly and method for making such joint
A joint and method of making a joint for providing a secure mechanical and electrical connection between a longitudinally extending coiled or wound element and a terminal on a mating component in a...
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5564440 |
Method for mopping and/or ablation of anomalous conduction pathways
A guiding introducer system for use in the left atrium comprised of an inner guiding introducer and an outer guiding introducer wherein the inner guiding introducer is comprised of a first and...
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5562721 |
Method of using endocardial impedance for assessing tissue heating during ablation
A method of locating infarcted myocardial tissue in a beating heart includes the step of inserting an impedance measuring tip of a catheter into the chamber of the beating heart, particularly the...
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5558073 |
Endocardial mapping apparatus with rotatable arm and method
An endocardial mapping apparatus for mapping the wall of a chamber of the heart having blood therein. The apparatus includes a flexible elongate tubular member having proximal and distal...
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5554178 |
Metalized implantable cardiac electrode
An implantable cardiac electrode includes a flexible polymeric substrate, a metallized surface layer of the polymeric substrate forming one or more electrically conductive regions on the surface of...
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5551426 |
Intracardiac ablation and mapping catheter
An assembly of preformed curved enamel-coated ablative tipped endocardial electrodes are housed inside an outer sheath in a preformed geometric arrangement for insertion into heart chambers and...
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5551427 |
Implantable device for the effective elimination of cardiac arrhythmogenic sites
An implantable devices for the effective elimination of an arrhythmogenic site from the myocardium is presented. By inserting small biocompatible conductors and/or insulators into the heart tissue...
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5546951 |
Method and apparatus for studying cardiac arrhythmias
This invention concerns an apparatus and method for the treatment of cardiac arrhythmias. More particularly, this invention is directed to a method for ablating a portion of an organ or bodily...
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5546940 |
System and method for matching electrical characteristics and propagation velocities in cardiac tissue to locate potential ablation sites
Systems and methods examine heart tissue morphology for the purpose of locating a potential ablation site. The systems and methods derive the electrical characteristic of tissue lying between the...
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5545203 |
Crush resistant multi-conductor lead body
An implantable pacing lead having a flexible insulative material injected into the passageway accommodating the electrical conductor(s) to encapsulate the conductor(s) for at least the portion of...
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5545200 |
Steerable electrophysiology catheter
An electrophysiology catheter (20) comprises a shaft (22) having a first bending stiffness and a deflectable tip (28) secured to the distal end (24) of the shaft with a second bending stiffness...
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5542173 |
Method of making flexible defibrillation electrode
An implantable defibrillator lead comprises a flexible core onto which is wound helically wound coils to form an electrode. These electrode coils are partially encapsulated by a flexible matrix...
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5534022 |
Lead having an integrated defibrillation/sensing electrode
An implantable defibrillator lead having an improved integrated bipolar defibrillation electrode is disclosed. The defibrillation electrode is electrically connected to the lead conductor at the...
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5531781 |
Implantable lead having a steering distal guide tip
A lead is provided which assists in the implantation of the lead within an artery or vein of a human heart. The lead includes a lead body having a distal end and a proximal end and at least one...
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5531779 |
Stent-type defibrillation electrode structures
Implantable electrode structures for use in apparatus for applying electrical therapy to a patient's heart in the treatment of arrhythmias such as tachycardias and fibrillations of the heart are...
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5531782 |
Implantable medical electrode with reduced number of conductors
A defibrillation electrode apparatus which provides defibrillating, pacing, and sensing functions with the use of fewer conductors. Conductor requirements are minimized by solid-state multiplexing...
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5529067 |
Methods for procedures related to the electrophysiology of the heart
Methods and apparatus are disclosed for use in procedures related to the electrophysiology of the heart, such as identifying or evaluating the electrical activity of the heart, diagnosing and/or...
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5522876 |
Screw-in pacing lead
A lead for use with a pacemaker in a pacing system, the lead having at least one electrode placed at its distal tip and a helical fixation member at the lead distal tip for screwing the lead into a...
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5522873 |
Catheter having electrode with annular recess and method of using same
A cardiovascular electrode catheter for use in arrhythmia ablation procedures has a dumbbell-shaped large-tip electrode having an annular recess or indentation. The annular recess divides the...
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5517989 |
Guidewire assembly
A method of diagnosing and treating the human or animal body comprises feeding a flexible guide wire, dimensioned to be inserted into human coronary arteries, along a blood vessel in the human or...
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5514172 |
Multi-conductor lead including a connector with an interlocking insulator
A multi-conductor lead having a lead body including at least two conductors and at least one electrode at a distal end for delivering an electrical stimulus, the multi-conductor lead also including...
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5514171 |
Pressure and heart movement sensor for heart stimulators
A pressure and heart movement sensor for a heart stimulator, includes an electrode system for implantation with an electrode cable containing at least two electrical conductors leading to electrode...
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5507802 |
Method of mapping and/or ablation using a catheter having a tip with fixation means
The mapping and/or ablation catheter for use in ablating the tissue in the wall forming a chamber in the heart comprising a flexible elongate tubular member having proximal and distal extremities,...
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5500011 |
Catheter for mapping and ablation and method therefor
A multipolar electrode catheter includes a central and four side electrodes at its distal end. The catheter is actuable from a retracted or collapsed mode wherein the side electrodes are arranged...
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