Patent
Electrode having composition-matched, common-lead thermocouple wire for providing multiple temperature-sensitive junctions
TLDR
In this article, the Seebeck coefficient of the sensor lead relative to the first metallic material was shown to be at least ten to one, where the Seebebeck coefficient is defined as the ratio of the temperature at an individual location on an electrode which is formed of a first metal material to the temperature of a second metal material.Abstract:
An apparatus for providing a plurality of signals, each indicative of a temperature at an individual location on an electrode which is formed of a first metallic material includes a plurality of electrically conductive sensor leads, each individually connected to the electrode to form a sensor junction. Each sensor junction has a temperature-dependent voltage associated with it. An electrically conductive common lead is connected to the electrode to form a common junction. The common lead is formed of a second metallic material such that substantially no temperature-dependent voltage is associated with the common junction. Each of the sensor leads is formed of a metallic material different than the first metallic material. Each metallic material has a known Seebeck coefficient relative to the first metallic material. The ratio of the magnitude of the Seebeck coefficient of the sensor lead metallic material relative to the first metallic material and the magnitude of the Seebeck coefficient of the common lead metallic material relative to the first metallic material is at least ten to one. The common lead generally exhibits a thermoelectric output similar to the first metallic material and may be formed of the first metallic material.read more
Citations
More filters
Patent
Vibration sensitive ablation device and method
TL;DR: In this paper, an ablation apparatus including a maneuvering mechanism, a conductive element, a sensor attached to the apparatus and an output device in communication with the sensor is provided.
Patent
User interface for tissue ablation system
Randell L. Werneth,J. Christopher Flaherty,Oral Hakan,Fred Morady,Ricardo Roman,Marshall L. Sherman +5 more
TL;DR: In this article, the authors describe an ablation catheter that has an array of ablation elements attached to a deployable carrier assembly, which can be constrained within the lumen of a catheter and deployed to take on an expanded condition.
Patent
Methods and apparatus for renal neuromodulation
Mark Deem,Hanson S. Gifford,Denise Zarins,Douglas Sutton,Erik Thai,Mark Gelfand,Howard R. Levin +6 more
TL;DR: In this article, a pulsed electric field was used to induce electroporation or electrofusion of percutaneous intravascular vessels to reduce expansion of an acute myocardial infarction, reduce or prevent the onset of morphological changes that are affiliated with congestive heart failure, and/or be efficacious in the treatment of end stage renal disease.
Patent
RF ablation system and method having automatic temperature control
TL;DR: In this article, a generator operates under the control of a processor to apply power to each of the electrodes and the power has an associated phase angle and, within a time duration, a plurality of alternating on periods and off periods, one set of adjacent on-and off periods defining a duty cycle.
Patent
Methods and devices for ablation
John W. Sliwa,Matthias Vaska,Jonathan L. Podmore,Roxanne L. Richman,Scott C. Anderson,Gerard Champsaur,John E. Crowe +6 more
TL;DR: An ablating device has a cover which holds an interface material such as a gel as mentioned in this paper, which contains the interface material during initial placement of the device, and it may also have a removable tip or a membrane filled with fluid.
References
More filters
Patent
Electrode and associated systems using thermally insulated temperature sensing elements
Stuart D. Edwards,Roger A. Stern +1 more
TL;DR: A thermal insulating element associated with the sensing element blocks the transfer of heat energy from between the temperature sensing element and the body as discussed by the authors, therefore measuring temperature without being affected by the surrounding thermal mass of the electrode.
Patent
Endometrial ablation apparatus and method
TL;DR: In this paper, an endometrial ablation method comprising passing sufficient RF current having a frequency of from 250 kHz to about 100 MHz through substantially the entire surface of the endometrium was presented.
Patent
Thermometric cardiac tissue ablation electrode with ultra-sensitive temperature detection
TL;DR: In this article, a cardiac ablation electrode with a thermosensing detector at one or more positions in the distal tip is constructed, where the sensor is embedded in the electrode tip with the detection wires running along the catheter to external apparatus for measurement to application of radiofrequency.
Patent
Thermocouple radio frequency lesion electrode
TL;DR: In this paper, a radio frequency (RF) lesion electrode design with a thermocouple temperature sensor in its distal uninsulated tip is described, having special design features which enable it to be made with very small tip diameters, flexible tip geometrics, very close proximity of the thermocoupled sensor to the tissue the temperature of which must be measured, and very accurate and rapid temperature response.
Patent
Multi-electrode ablation catheter
TL;DR: A multi-electrode ablation catheter (10) comprises a plurality of thick walled gold alloy electrodes (21) mounted on the tip section (12) of an elongated catheter as mentioned in this paper.