Pacemaker retrieval systems and methods
First Claim
Patent Images
1. A catheter for retrieving a medical device from a patient, comprising:
- a catheter shaft;
a snare disposed within the catheter shaft and extendable distally beyond the catheter shaft;
a docking cap disposed on a distal portion of the catheter shaft, the docking cap being rotatable independent of the catheter shaft, wherein the docking cap includes an interior configured to receive the medical device;
a torque shaft disposed within the catheter shaft and extending through the docking cap into the interiors; and
a handle coupled to the catheter shaft and the torque shaft, wherein the handle is operably configured to move the torque shaft proximally relative to the catheter shaft to connect the torque shaft to the docking cap, and wherein the handle is operably configured to rotate the torque shaft relative to the catheter shaft to apply rotational torque to the docking cap when the torque shaft is connected to the docking cap.
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Accused Products
Abstract
A catheter system for retrieving a leadless cardiac pacemaker from a patient is provided. The cardiac pacemaker can include a docking or retrieval feature configured to be grasped by the catheter system. In some embodiments, the retrieval catheter can include a snare configured to engage the retrieval feature of the pacemaker. The retrieval catheter can include a torque shaft selectively connectable to a docking cap and be configured to apply rotational torque to a pacemaker to be retrieved. Methods of delivering the leadless cardiac pacemaker with the delivery system are also provided.
577 Citations
30 Claims
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1. A catheter for retrieving a medical device from a patient, comprising:
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a catheter shaft; a snare disposed within the catheter shaft and extendable distally beyond the catheter shaft; a docking cap disposed on a distal portion of the catheter shaft, the docking cap being rotatable independent of the catheter shaft, wherein the docking cap includes an interior configured to receive the medical device; a torque shaft disposed within the catheter shaft and extending through the docking cap into the interiors; and a handle coupled to the catheter shaft and the torque shaft, wherein the handle is operably configured to move the torque shaft proximally relative to the catheter shaft to connect the torque shaft to the docking cap, and wherein the handle is operably configured to rotate the torque shaft relative to the catheter shaft to apply rotational torque to the docking cap when the torque shaft is connected to the docking cap. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A leadless pacemaker and retrieval system, comprising:
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a leadless cardiac pacemaker having a retrieval feature coupled to the pacemaker with at least one flexible stem; and a delivery catheter comprising; a catheter shaft, a snare disposed within the catheter shaft and extendable distally beyond the catheter shaft, a docking cap disposed on a distal portion of the catheter shaft, the docking cap being rotatable independent of the catheter shaft, wherein the docking cap includes an interior sized and configured to receive the retrieval feature of the leadless cardiac pacemaker, a torque shaft disposed within the catheter shaft and extending through the docking cap into the interior, and a handle coupled to the catheter shaft and the torque shaft, wherein the handle is operably configured to move the torque shaft proximally relative to the catheter shaft to connect the torque shaft to the docking cap, wherein the handle is operably configured to rotate the torque shaft relative to the catheter shaft to apply rotational torque to the docking cap and the leadless cardiac pacemaker when the torque shaft is connected to the docking cap and the retrieval feature is disposed in the interior. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of retrieving a medical device from a patient, comprising:
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positioning a snare of a catheter in proximity to a retrieval feature of the medical device and distal to a docking cap rotatably coupled to a catheter shaft of the catheter; grasping the retrieval feature of the medical device with the snare; pulling the snare proximally into the catheter to position the retrieval feature of the medical device inside an interior of the docking cap of the catheter; pulling a torque shaft to connect the torque shaft to the docking cap, wherein the torque shaft is disposed within the catheter shaft and extends through the docking cap into the interior; and rotating the torque shaft independently of the catheter shaft to apply a rotational torque to the docking cap, thereby applying rotational torque from the docking cap to the medical device to unscrew the medical device from tissue in the patient. - View Dependent Claims (26, 27, 28, 29, 30)
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Specification