CPC A61N 1/0587 (2013.01) [A61B 17/50 (2013.01); A61N 1/3756 (2013.01); A61N 1/37512 (2017.08); A61N 2001/0578 (2013.01)] | 16 Claims |
1. An implantable leadless cardiac pacing device comprising:
a housing having a proximal end, a distal end, and a circumferential surface extending around a central longitudinal axis of the housing between the proximal end and the distal end, the housing having a radial dimension from the central longitudinal axis to the circumferential surface of the housing, the housing containing a power source and electrical circuitry therein;
one or more electrodes configured to be positioned adjacent cardiac tissue to provide electrical stimulation thereto, the one or more electrodes in electrical communication with the electrical circuitry in the housing;
a docking member extending from the proximal end of the housing along the central longitudinal axis of the housing, the docking member including a head portion and a neck portion extending between the housing and the head portion, the head portion having a radial dimension from the central longitudinal axis and the neck portion having a radial dimension from the central longitudinal axis less than the radial dimension of the head portion; and
a plurality of retrieval features arranged with the housing and extending distally beyond a proximal end of the housing in an equilibrium state, each of the plurality of retrieval features having an inner radial dimension from the central longitudinal axis less than the radial dimension of the housing and an outer radial dimension from the central longitudinal axis greater than the radial dimension of the housing;
wherein the plurality of retrieval features are configured to remain with the housing while implanted in a patient.
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