Leadless cardiac pacing devices including tissue engagement verification
First Claim
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1. An implantable leadless cardiac pacemaker comprising:
- a housing having a proximal end and a distal end;
an electrode positioned proximate the distal end of the housing configured to be positioned adjacent cardiac tissue and stimulate the cardiac tissue;
a helical tissue anchor extending from the distal end of the housing configured to be implanted in the cardiac tissue to secure the housing to the cardiac tissue; and
a tissue engagement indicator distinct from the helical tissue anchor, the tissue engagement indicator being movable relative to the helical tissue anchor and the housing to provide feedback of a degree of engagement of the helical tissue anchor in the cardiac tissue.
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Abstract
An implantable leadless cardiac pacing device including a housing having a proximal end and a distal end, an electrode positioned proximate the distal end of the housing configured to be positioned adjacent cardiac tissue, and a tissue anchoring member extending from the distal end of the housing configured to secure the housing to cardiac tissue. The device further includes a tissue engagement verification feature configured to provide feedback upon engagement of the tissue anchoring member in cardiac tissue.
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Citations
20 Claims
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1. An implantable leadless cardiac pacemaker comprising:
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a housing having a proximal end and a distal end; an electrode positioned proximate the distal end of the housing configured to be positioned adjacent cardiac tissue and stimulate the cardiac tissue; a helical tissue anchor extending from the distal end of the housing configured to be implanted in the cardiac tissue to secure the housing to the cardiac tissue; and a tissue engagement indicator distinct from the helical tissue anchor, the tissue engagement indicator being movable relative to the helical tissue anchor and the housing to provide feedback of a degree of engagement of the helical tissue anchor in the cardiac tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An implantable leadless cardiac pacemaker comprising:
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a housing having a proximal end and a distal end; an electrode positioned proximate the distal end of the housing configured to be positioned adjacent cardiac tissue and stimulate the cardiac tissue; a helical tissue anchor extending from the distal end of the housing configured to be implanted in the cardiac tissue to secure the housing to the cardiac tissue; and a radiopaque marker distinct from the helical tissue anchor and movable relative to the housing and the helical tissue anchor; and a radiopaque reference point disposed on the housing and stationary relative to the housing; wherein a distance of displacement of the radiopaque marker relative to the radiopaque reference point provides visual feedback of a degree of engagement of the helical tissue anchor in the cardiac tissue. - View Dependent Claims (17, 18)
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19. A method of implanting a leadless cardiac pacemaker having a housing, the method comprising:
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advancing the leadless cardiac pacemaker into a chamber of a heart; engaging a helical tissue anchor of the leadless cardiac pacemaker into cardiac tissue; fluoroscopically observing a distance of displacement of a radiopaque marker of the leadless cardiac pacemaker relative to a radiopaque reference point disposed on the housing to confirm engagement of the helical tissue anchor in the cardiac tissue and verify a degree of tissue engagement of the helical tissue anchor with the cardiac tissue; wherein the radiopaque marker is distinct from the helical tissue anchor and is moveable relative to the helical tissue anchor and the housing. - View Dependent Claims (20)
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Specification