Shroud-based electrodes having vented gaps
First Claim
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1. 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.
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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.
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Citations
17 Claims
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1. A subcutaneous cardiac activity sensing shroud, comprising:
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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. - View Dependent Claims (2, 3, 4, 5)
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6. A subcutaneous cardiac activity sensing shroud, comprising:
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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. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A subcutaneous cardiac activity sensing shroud, comprising:
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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. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification