Fixation for implantable medical devices
First Claim
1. A fixation component for an implantable medical device, the fixation component comprising:
- a base portion; and
a plurality of tines that extend from the base portion, wherein each tine of the plurality of tines is elastically deformable between a pre-set position and an open position, and wherein each tine of the plurality of tines comprises a hook segment that, when positioned in the pre-set position, extends along a pre-set curvature, wherein the pre-set curvature is defined by at least a first radius and a second radius distal to the first radius, wherein the first radius is different than the second radius, and wherein the first radius and the second radius are nonzero.
1 Assignment
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Accused Products
Abstract
A tine portion of an implantable medical device includes a hook segment and a distal segment terminated by a tissue-piercing tip, wherein the distal segment extends from a distal end of the hook segment to the tip. The hook segment, which is elastically deformable from a pre-set curvature, for example, defined by a single radius, preferably tapers from a first width thereof, in proximity to a proximal end thereof, to a smaller, second width thereof, in proximity to the distal end thereof, wherein the tip has a width that is greater than the second width of the hook segment. Alternately, the tine portion may include a hook segment that is defined by two radii and a straight section extending therebetween.
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Citations
20 Claims
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1. A fixation component for an implantable medical device, the fixation component comprising:
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a base portion; and a plurality of tines that extend from the base portion, wherein each tine of the plurality of tines is elastically deformable between a pre-set position and an open position, and wherein each tine of the plurality of tines comprises a hook segment that, when positioned in the pre-set position, extends along a pre-set curvature, wherein the pre-set curvature is defined by at least a first radius and a second radius distal to the first radius, wherein the first radius is different than the second radius, and wherein the first radius and the second radius are nonzero. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An implantable medical device (IMD) comprising:
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a hermetically sealed housing, the housing containing control electronics and a power source of the device and defining a longitudinal axis of the device; and a fixation component coupled to the hermetically sealed housing, the fixation component comprising; a base portion; and a plurality of tines that extend from the base portion, wherein each tine of the plurality of tines is elastically deformable between a pre-set position and an open position, and wherein each tine of the plurality of tines comprises a hook segment that, when positioned in the pre-set position, extends along a pre-set curvature, wherein the pre-set curvature is defined by at least a first radius and a second radius distal to the first radius, wherein the first radius is different than the second radius, and wherein the first radius and the second radius are nonzero. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A medical device system, comprising:
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an implantable medical device (IMD) comprising a hermetically sealed housing and a fixation component coupled to the hermetically sealed housing, the fixation component comprising; a base portion; and a plurality of tines that extend from the base portion, wherein each tine of the plurality of tines is elastically deformable between a pre-set position and an opened position, and wherein each tine of the plurality of tines comprises; a hook segment that, when positioned in the pre-set position, extends along a pre-set curvature, wherein the pre-set curvature is defined by a first radius and a second radius distal to the first radius, wherein the first radius is different than the second radius, and wherein the first radius and the second radius are nonzero; and a straight distal segment terminated by a tip, the straight distal segment distal of the hook segment; and a delivery catheter extending from a proximal end to a distal end having a distal opening defined by a wall configured to contain the IMB, wherein the straight distal segment, when positioned in the opened position inside the distal end, is oriented at an acute angle relative to the wall. - View Dependent Claims (20)
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Specification