PatentDOI
Catheters for imaging, sensing electrical potentials and ablating tissue
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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
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References
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Thermal angioplasty catheter and method
TL;DR: In this article, a method and apparatus for selectively heating an atheromatous mass which partially or fully occludes a particular blood vessel is presented, allowing the occlusive mass to be more readily recanalized by expansion of a balloon or other dilitation means.
Patent
Device and method for heating tissue in a patient's body
TL;DR: In this paper, a balloon is mounted on the catheter shaft and filled with an electrically conductive fluid, two or more electrical contacts enclosed within the chamber, a power supply for applying an electrical potential to the contacts, and a two-or more conductors for connecting each of the contacts to the power supply.
PatentDOI
Ultra-thin acoustic transducer and balloon catheter using same in imaging array subassembly
TL;DR: An array of miniature ultrasound crystals mounted on preassembled subassembly which is, in turn, mounted on a small lumen catheter provides dimensional and other quantitative information relating to arterial wall geometry and character at disease or obstruction sites as mentioned in this paper.
Patent
Catheters and methods for performing cardiac diagnosis and treatment
TL;DR: In this paper, the distal end of a catheter (18) is inserted into a heart to support at least one electrode (22), and the catheter has a fluid flow conduit (62) extending through it.
PatentDOI
Method and apparatus for ultrasound imaging and atherectomy
Yue-Teh Jang,Axel F. Brisken +1 more
TL;DR: In this article, a transducer is moved longitudinally within an artery while in a fixed radial position to display a planer or rectangular field of view image area of the artery.