Medical device for use in bodily lumens, for example an atrium

摘要

A device positionable in a cavity of a bodily organ (e.g., a heart) may discriminate between fluid (e.g., blood) and non-fluid tissue (e.g., wall of heart) to provide information or a mapping indicative of a position and/or orientation of the device in the cavity. Discrimination may be based on flow, or some other characteristic, for example electrical permittivity or force. The device may selectively ablate portions of the non-fluid tissue based on the information or mapping. The device may detect characteristics (e.g., electrical potentials) indicative of whether ablation was successful. The device may include a plurality of transducers, intravascularly guided in an unexpanded configuration and positioned proximate the non-fluid tissue in an expanded configuration. Expansion mechanism may include helical member(s) or inflatable member(s).

主权项

1. A medical system, comprising:
a medical device including a frame positionable in at least a portion of a bodily organ, the frame including a plurality of transducer electrodes to sense at least in part a physical interior surface of a tissue wall, the physical interior surface interrupted by one or more ports in fluid communication with the bodily organ, each of the transducer electrodes responsive to at least one characteristic indicative of whether a fluid or non-fluid tissue is present and not indicative of a flow of the fluid in the bodily organ; a computing system coupled to the medical device and including at least one processor and at least one memory that stores instructions, the computing system configured to determine a position of the medical device in the bodily organ at least by executing a mapping process to map the bodily organ, the mapping process including locating positions of the one or more ports at least by computationally discriminating between the fluid and the non-fluid tissue based at least in part on the at least one characteristic sensed by the transducer electrodes; and at least one display coupled to the computing system and configured to display output from the mapping process.