Shroud-based electrodes having vented gaps
AssigneeMedtronic, Inc.
InventorsChristopher C. Stancer, John C. Mertz, Thomas H. Adamski
Life of this patent
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Abstract
Apparatus and method according to the disclosure relate to promoting flow of body fluids in and around and between a substantially planar cardiac-sensing electrode and a shroud member utilizing spacing therebetween and/or one or more apertures, notches, slots and the like. For example, a relatively recessed area or aperture formed in an exemplary resin-based shroud member includes apertures that cooperate to promote flow of body fluids therearound.
Claims17
A subcutaneous cardiac activity sensing shroud, comprising:
- a shroud member for location adjacent at least a part of the peripheral portion of a housing for an implantable medical device (IMD), said shroud member including a recessed region having a major surface and surrounding edges;
- and
- a substantially flat electrode located within the recessed region between the edges and having a surfaces facing and spaced from the major surfaces of the recessed region thereby defining a cavity therebetween;
- wherein the electrode includes one of:
- an aperture, a notch, and a slot extending therethrough adapted to promote flow of body fluid through the cavity.
A subcutaneous cardiac activity sensing shroud, comprising:
- a shroud member for location adjacent at least a part of the peripheral portion of a housing for an implantable medical device (IMD), said shroud member including a recessed region having an outwardly facing major surfaces and surrounding edges;
- and
- a substantially flat electrode located within the recessed region between the edges and having a substantially flat surfaces inward and spaced from the major surfaces of the recessed region and separated from the major surfaces by an open cavity therebetween;
- wherein the electrode includes one of:
- an aperture, a notch, and a slot extending therethrough adapted to promote flow of body fluid into the cavity.
A subcutaneous cardiac activity sensing shroud, comprising:
- a shroud member for location adjacent at least a part of the peripheral portion of a housing for an implantable medical device (IMD), said shroud member including a recessed region having an outwardly facing major surfaces and surrounding edges;
- and
- a substantially flat electrode located within the recessed region between the edges and spaced from the major surfaces of the recessed region and separated from the by an open cavity therebetween;
- wherein the electrode includes one of:
- an aperture, a notch, and a slot extending therethrough adapted to promote flow of body fluid into the open cavity.
Dependencies are inferred from the claim text.