Catheter-based system for delivery and retrieval of a leadless pacemaker
AssigneePacesetter, Inc.
InventorsDavid Rickheim, Daniel Coyle, Dale Price, Jennifer Heisel
Life of this patent
Estimating the term…
Abstract
Catheter-based delivery systems for delivery and retrieval of a leadless pacemaker include features to facilitate improved manipulation of the catheter and improved capture and docking functionality of leadless pacemakers. Such functionality includes mechanisms directed to deflecting and locking a deflectable catheter, maintaining tension on a retrieval feature, protection from anti-rotation, and improved docking cap and drive gear assemblies.
Claims21
1-14. (canceled)
A retrieval system for retrieving an implanted medical device, the retrieval system comprising:
- a catheter shaft;
- a snare extending through the catheter shaft;
- and
- a handle comprising:
- a first handle portion coupled to the catheter shaft and comprising a first counter-rotation feature;
- and
- a second handle portion comprising a second counter-rotation feature, the second handle portion coupled to the snare such that the snare is retracted by displacing the second handle portion relative to the first handle portion, wherein the second handle portion is movable from a first position in which the first counter-rotation feature does not engage the second counter-rotation feature to a second position in which the first enter-rotation feature does engage the second counter-rotation feature.
A handle of a catheter system, comprising:
- a first handle portion including a first counter-rotation feature having a protrusion;
- and
- a second handle portion including a second counter-rotation feature including a plurality of offset lobes, wherein the second handle portion is movable from a first position in which the plurality of offset lobes are not aligned with the protrusion to a second position in which the plurality of offset lobes are aligned with the protrusion such that, in the second position, the protrusion allows rotation of the plurality of offset lobes in a first rotational direction but obstructs rotation of the plurality of offset lobes in a second rotational direction.
A handle of a catheter system, comprising:
- a first handle portion comprising a protrusion;
- and
- a second handle portion comprising a pair of semi-circular lobes, wherein the second handle portion is movable from a first position in which the pair of semi-circular lobes is not aligned with the protrusion and a second position in which the pair of semi-circular lobes is aligned with the protrusion such that, in the second position, the protrusion allows rotation of the pair of semi-circular lobes in a first direction but obstructs rotation of the pair of semi-circular lobes in a second direction.
Dependencies are inferred from the claim text.