Method and apparatus for fixating an implantable medical device
First Claim
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1. An implantable device, comprising:
- an elongate body including a proximal portion and a distal portion;
a fixation mechanism formed about the body, extending from the proximal portion to the distal portion and comprising;
a fixation segment positioned in proximity to a distal end of the fixation mechanism and including a deployable lobe,a push tube segment extending from the fixation segment proximally to a proximal end of the fixation mechanism, andan anchor fixedly coupling the fixation mechanism distal end to the body at a location spaced from a distal end of the body such that a portion of the distal portion of the body is located between the fixation mechanism distal end and the distal end of the body;
a lubricious interface between the body and a portion of the push tube;
wherein the distal portion of the body comprises a bend formed therein, wherein the bend is located between the fixation mechanism distal end and a distal end of the body, and wherein, when the portion of the body about which the fixation mechanism is formed is straight and a longitudinal axis is drawn through the center of that portion, the bend is such that a distal end of the body is deflected by a distance from the longitudinal axis that is greater than a height of the deployed lobe as measured from the longitudinal axis; and
wherein the deployable lobe is deployed when the push tube segment is pushed distally.
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Abstract
A fixation mechanism coupled to an implantable device body extends from a proximal portion of the body to a distal portion of the body and includes a fixation element and a push tube segment. A push tube segment of the mechanism extends proximally from the fixation mechanism to the proximal portion of the body and is adapted to deploy the mechanism.
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Citations
13 Claims
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1. An implantable device, comprising:
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an elongate body including a proximal portion and a distal portion; a fixation mechanism formed about the body, extending from the proximal portion to the distal portion and comprising; a fixation segment positioned in proximity to a distal end of the fixation mechanism and including a deployable lobe, a push tube segment extending from the fixation segment proximally to a proximal end of the fixation mechanism, and an anchor fixedly coupling the fixation mechanism distal end to the body at a location spaced from a distal end of the body such that a portion of the distal portion of the body is located between the fixation mechanism distal end and the distal end of the body; a lubricious interface between the body and a portion of the push tube; wherein the distal portion of the body comprises a bend formed therein, wherein the bend is located between the fixation mechanism distal end and a distal end of the body, and wherein, when the portion of the body about which the fixation mechanism is formed is straight and a longitudinal axis is drawn through the center of that portion, the bend is such that a distal end of the body is deflected by a distance from the longitudinal axis that is greater than a height of the deployed lobe as measured from the longitudinal axis; and wherein the deployable lobe is deployed when the push tube segment is pushed distally. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification