PatentDOI
Catheters for imaging, sensing electrical potentials and ablating tissue
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
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PatentDOI
System and method for navigating an ultrasound catheter to image a beating heart
TL;DR: In this paper, a context map showing the location on a heart of the ultrasonically imaged frame was generated by using the location of the heart in the ultrasound image of the human body.
Patent
Systems and methods for securing cardiovascular tissue
TL;DR: In this paper, the authors described a method to close a patent foramen ovale or other openings in cardiovascular tissue by drawing the first and second portions of the cardiovascular tissue into contact with each other by drawing a vacuum in a region adjacent to the 1 and 2 portions of cardiovascular tissue via the catheter.
PatentDOI
Echogenic needle catheter configured to produce an improved ultrasound image
William E. Webler,Mina Chow +1 more
TL;DR: An echogenic medical device, such as a needle catheter, which produces an improved ultrasonic image of the device, and a method of performing a medical procedure using a device of the invention is described in this paper.
Patent
Cool-tip combined electrode introducer
TL;DR: In this article, the insertion of a cluster of electrodes into the body of a patient for performing tissue ablation is described, and an introducer includes a body portion including a plurality of holes formed therein for selectively receiving a respective elongated shaft of the electrodes therethrough, wherein the holes of the introducer orient and space each electrode relative to one another.
Patent
Coronary Sinus Cannulation
TL;DR: Coronary sinus cannulation apparatus and methods relating to tissue visualization catheters that can locate and/or cannulate a morphological feature within a body lumen, such as the coronary sinus, are described to improve procedure effectiveness and reducing procedure time.
References
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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.