PatentDOI
Catheters for imaging, sensing electrical potentials and ablating tissue
Reads0
Chats0
TLDR
In this paper, an acoustic imaging system for use within a heart has a catheter, an ultrasound device, and an electrode mounted on the catheter to create an ultrasonic image, and the electrode is arranged for electrical contact with the internal structure.Abstract:
An acoustic imaging system for use within a heart has a catheter, an ultrasound device incorporated into the catheter, and an electrode mounted on the catheter. The ultrasound device directs ultrasonic signals toward an internal structure in the heart to create an ultrasonic image, and the electrode is arranged for electrical contact with the internal structure. A chemical ablation device mounted on the catheter ablates at least a portion of the internal structure by delivery of fluid to the internal structure. The ablation device includes a material that vibrates in response to electrical excitation, the ablation being at least assisted by vibration of the material. The ablation device may alternatively be a transducer incorporated into the catheter, arranged to convert electrical signals into radiation and to direct the radiation toward the internal structure. The electrode may be a sonolucent structure incorporated into the catheter, through which the ultrasound device is arranged to direct signals. An acoustic marker mounted on the catheter emits a sonic wave when electrically excited. A central processing unit creates a graphical representation of the internal structure, and super-imposes items of data onto the graphical representation at locations that represent the respective plurality of locations within the internal structure corresponding to the plurality of items of data. A display system displays the graphical representation onto which the plurality of items of data are super-imposed.read more
Citations
More filters
Patent
Inflatable electrode for temporary pacing
TL;DR: A temporary balloon-type electrode adapted for insertion and temporary fixation in a blood vessel of a heart for determining a suitable place therein for a subsequently inserted and fixated permanent electrode is described in this article.
Patent
Targeted cooling of deployable microwave antenna
TL;DR: In this paper, the authors present devices and methods for the treatment of tissue with microwave energy using an antenna assembly which includes an elongate member, an outer conductor, an inner conductor, at least a portion of which is deployable, and a cooling system.
Patent
Wrap based lesion formation apparatus and methods configured to protect non-target tissue
TL;DR: In this article, the authors present an approach for forming lesions in target tissue and positioning an insulation element adjacent to non-target tissue to form lesions in the target tissue, and demonstrate the effectiveness of this approach.
Patent
Ablation catheter electrode arrangement
TL;DR: An ablation catheter employing a continuous or nearly continuous flexible electrode arrangement is described in this article, where the flexible electrodes are configured to adapt to the change in shape of the portion of the catheter that the electrode is connected with.
Patent
System and method for performing an electrosurgical procedure using an ablation device with an integrated imaging device
TL;DR: In this paper, the radiating portion has an outer conductor and an inner conductor, the inner conductor is disposed within the outer conductor, and the imaging device is configured to generate imaging data corresponding to tissue proximate the radii.
References
More filters
Journal ArticleDOI
Catheter ablation of accessory atrioventricular pathways (Wolff-Parkinson-White syndrome) by radiofrequency current.
Warren M. Jackman,Xunzhang Wang,Karen J. Friday,C A Roman,Kriegh Moulton,Karen J. Beckman,J H McClelland,Nicholas Twidale,H A Hazlitt,M I Prior +9 more
TL;DR: Radiofrequency current is highly effective in ablating accessory pathways, with low morbidity and no mortality, according to this study.
Patent
Apparatus and method for treating cardiac arrhythmias.
TL;DR: In this article, a method and apparatus for treating cardiac arrhythmias comprising an instrument for mapping ventricular tachycardia, is disclosed, which comprises obtaining a perspective image of the organ or structure to be mapped, advancing one or more catheters having distal tips to sites adjacent to or within the organ and structure, sensing the location of each catheter's distal tip using a non-ionizing field, processing the sensed information to create one or multiple data points, superimposing the data points on the perspective image, and ablating a portion of the
PatentDOI
Acoustic imaging catheter and the like
TL;DR: In this article, the authors presented a set of selectable catheter sheaths, including a sheath with an integral acoustically-transparent window, sheaths with end extensions that aid in positioning and a liquid injection-producing sheath.
Patent
Electro-coagulation and ablation and other electrotherapeutic treatments of body tissue
TL;DR: A catheter includes a flexible elongated catheter body that defines a needle receiving, or probe-receiving, lumen, a retractable tissue-penetrable needle or probe, and an electrode mounted on the distal portion of the catheter.
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.