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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Patent
System and method providing intracoronary laser speckle imaging for the detection of vulnerable plaque
TL;DR: In this article, a wave-guiding arrangement was proposed to reduce the crosstalk between two wave-guide arrangements associated with one another that are configured to receive a further electro-magnetic radiation reflected from the tissue and transmit at least one speckle pattern associated with the further EM radiation.
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Needle Assembly Including an Aligned Magnetic Element
Jon B. Newman,Sarah L. Montgomery,Randi Cleverly,Michael S. Guthrie,Joseph J. Stupak,Glade Harold Howell,Eddie K. Burnside,Bret Hamatake,Chad A. Hadley,Robert N. Golden +9 more
TL;DR: In this article, a guidance system for assisting with the insertion of a needle into a patient's body is described, which includes an imaging device including a probe for producing an image of an internal body portion target, such as a vessel.
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Method of ablating tissue
TL;DR: In this paper, a ball point distal tip is used for cauterizing tissue, rather than the cauterized part of the tip, which is the part that actually conducts the electrocautery energy away from the tip.
PatentDOI
Ultrasound method for revascularization and drug delivery
TL;DR: In this article, a method and device for improving blood circulation to an area of interest within a patient's heart is described, which consists of inserting a guidable elongated flexible ultrasound device into the patient's vasculature, applying ultrasonic energy to the area in need of improved circulation, and injecting materials such as angiogenic materials or contrasting agents into the area.
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Method of diagnosis and treatment of tumors using high intensity focused ultrasound
Narendra T. Sanghvi,Chandan Guha,James Fedewa Russekk,Roy F. Carlson,Ralf Seip,Wo-Hsing Chen +5 more
TL;DR: In this paper, a method of diagnosis and treatment of tumors using High Intensity Focused Ultrasound (HIFU) is provided, which comprises the steps of subjecting a tumor to HIFU to cause the tumor cells to release cellular material and evaluating the cellular material for a tumor marker.
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.