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Leadless cardiac stimulation systems

  • US 10,076,658 B2
  • Filed: 12/17/2012
  • Issued: 09/18/2018
  • Est. Priority Date: 10/20/2004
  • Status: Active Grant
First Claim
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1. A system, comprising:

  • an elongate member; and

    an intravascularly-deliverable leadless electrode assembly, comprising;

    a housing having a proximal end and a distal end, the housing defining an inwardly extending cavity that is located centrally on the proximal end of the housing and extends distally from a proximally facing cavity opening, the cavity providing access to an engaging feature, the engaging feature including a proximally facing side and a curved distally facing side having a predefined curved surface;

    an attachment mechanism operatively coupled to the distal end of the housing and configured to secure at least a portion of the leadless electrode assembly to a myocardium of a heart, the attachment mechanism including a tip configured to penetrate into the myocardium of the heart;

    an electrostimulation generator circuit situated in the housing;

    respective electrostimulation electrodes coupled to the electrostimulation generator circuit and configured to provide an electrostimulation to the myocardium of the heart; and

    wherein a portion of the elongate member is configured to extend through the proximally facing cavity opening into the cavity of the housing to access and releasably engage the curved distally facing side of the engaging feature in a non-threaded manner to control separation between the leadless electrode assembly and the elongate member when pulling on the elongated member in a proximal direction.

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