Implantable medical device fixation
First Claim
Patent Images
1. An assembly comprising:
- an implantable medical device comprising;
a plurality of electrodes; and
circuitry configured to deliver cardiac pacing stimulation via the plurality of electrodes; and
a set of fixation tines that are each deployable from a spring-loaded position to a hooked position, wherein each fixation tine of the set of fixations tines comprises a proximal end that is fixedly attached to a distal end of the implantable medical device in both the spring-loaded position and the hooked position, wherein each fixation tine of the set of fixations tines comprises a super-elastic material and is configured to have a column strength sufficient that a distal end of the tine penetrates cardiac tissue during deployment.
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Abstract
Various fixation techniques for implantable medical device (IMDs) are described. In one example, an assembly comprises an IMD; and a set of active fixation tines attached to the IMD. The active fixation tines in the set are deployable from a spring-loaded position in which distal ends of the active fixation tines point away from the IMD to a hooked position in which the active fixation tines bend back towards the IMD. The active fixation tines are configured to secure the IMD to a patient tissue when deployed while the distal ends of the active fixation tines are positioned adjacent to the patient tissue.
406 Citations
29 Claims
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1. An assembly comprising:
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an implantable medical device comprising; a plurality of electrodes; and circuitry configured to deliver cardiac pacing stimulation via the plurality of electrodes; and a set of fixation tines that are each deployable from a spring-loaded position to a hooked position, wherein each fixation tine of the set of fixations tines comprises a proximal end that is fixedly attached to a distal end of the implantable medical device in both the spring-loaded position and the hooked position, wherein each fixation tine of the set of fixations tines comprises a super-elastic material and is configured to have a column strength sufficient that a distal end of the tine penetrates cardiac tissue during deployment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An assembly comprising:
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an implantable medical device comprising; a plurality of electrodes; and circuitry configured to deliver cardiac pacing stimulation via the plurality of electrodes; and a set of fixation tines that are each deployable from a spring-loaded position to a hooked position, wherein each fixation tine of the set of fixations tines comprises a proximal end that is fixedly attached to a distal end of the implantable medical device in both the spring-loaded position and the hooked position, wherein each fixation tine of the set of fixation tines is positioned substantially equidistant from each other in a circular arrangement, wherein one of the electrodes is located at the distal end of the implantable medical device and is generally centered within the circular arrangement, wherein each fixation tine of the set of fixation tines extends from the implantable medical device at a longitudinal position that is proximal to the electrode, and wherein each fixation tine of the set of fixations tines comprises a super-elastic material and defines an oblong cross-section and is configured to have a column strength sufficient that a distal end of the tine penetrates cardiac tissue during deployment. - View Dependent Claims (19, 20, 21, 22)
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23. A kit comprising:
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an implantable medical device comprising; a plurality of electrodes; circuitry configured to deliver cardiac pacing stimulation via the plurality of electrodes; and a set of fixation tines that are each deployable from a spring-loaded position to a hooked position, wherein each fixation tine of the set of fixations tines comprises a proximal end that is fixedly attached to a distal end of the implantable medical device in both the spring-loaded position and the hooked position, wherein each fixation tine of the set of fixations tines comprises a super-elastic material and is configured to have a column strength sufficient that a distal end of the tine penetrates cardiac tissue during deployment; and a catheter forming a lumen sized to receive the implantable medical device and hold each fixation tine of the set of fixation tines in the spring-loaded position, wherein each fixation tine of the set of fixation tines is configured to be deployed from the spring-loaded position to the hooked position by releasing the fixation tine from the spring-loaded position and allowing the fixation tine to assume the hooked position, wherein the catheter includes an aperture to the lumen that is adjacent to the distal end of the catheter. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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Specification