St Jude Medical, Atrial Fibrillation Division, Inc

Kevin Dillon

John Anderson Hauck

Graydon Ernest Beatty

Mark MacGregor

Troy Terrance Tegg

Mark A MacGregor

A system for determining a position of a medical device within a body is provided that reduces positional error by establishing a reference origin closer to the device and/or simplifies the system by integrating components and functions. In one embodiment, a pair of drive electrodes are affixed to opposed surfaces of the body and create a pathway for transmission of current through a position sensor related to the medical device. A pair of reference electrodes proximate the drive electrodes are coupled to a common reference node outputting a reference signal establishing the reference origin. An electronic control unit determines the position of the medical device responsive to the position signal and the reference signal. In another embodiment, a patch affixed to an external surface of the body has a base layer and multiple devices supported on the base layer, electrically isolated from one another, and configured to perform different functions.

System for determining the position of a medical device within a body

A hemostasis valve has a housing having proximal and distal ends defining proximal and distal openings configured for passage of a medical device therethrough. The housing further defines a cavity between the proximal and distal ends. One or more rollers are received within the cavity and define end sections and a central section having a smaller diameter than the end sections. Sleeves are disposed about the rollers and are elastically deformable to form a fluid seal around the device. The sleeves each assume a first form when the device is absent from the cavity wherein a radially inner surface of the sleeve is located at a first distance from the central section of a roller and a second form when the device is present in the cavity wherein the surface is located at a second distance, less than the first distance, from the central section of the roller.

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Chanhassen, MN, United States of America

Kevin Dillon