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Patent foramen ovale (PFO) closure clips

  • US 9,241,695 B2
  • Filed: 03/25/2003
  • Issued: 01/26/2016
  • Est. Priority Date: 03/25/2002
  • Status: Active Grant
First Claim
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1. A device for closing a septal defect with two overlapping layers of septum primum and septum secundum dividing a left atrium and a right atrium in a mammalian heart, the device having a delivery configuration and a deployed configuration, the device comprising:

  • an elongated element arranged in a closed loop in both the delivery and deployed configurations, the elongated element defining a first and a second opposed closure member and at least two connecting members, the elongated element being elongated and straightened in the delivery configuration,the first and second opposed closure members disposed on opposite sides of the septum, each closure member having a periphery, wherein each of the first and second closure members includes two curved portions, the two curved portions of the first closure member being connected at a first peak at a vertical center of the first closure member, the two curved portions of the second closure member being connected at a second peak at a vertical center of the second closure member, wherein the first and second peak generally oppose one another on opposite sides of the septum in the deployed configuration, and the first closure member and the second closure member configured to apply a compressive force to the overlapping layers in the deployed configuration, and wherein the first and second opposed closure members are substantially parallel to each other in the deployed configuration,the at least two connecting members attached to each of said closure members at a location on the periphery of said closure members, wherein the connecting members extend between the overlapping layers of septum primum and septum secundum, andportions of the at least two connecting members and the two curved portions of each of the first and second opposed closure members disposed to provide a compressive force to the overlapping layers of septum primum and septum secundum, wherein, in the deployed configuration, the first and second closure members are substantially symmetric, the first closure member is directed generally in a first direction, and the second closure member is directed generally in a direction opposite to the first direction across a longitudinal axis transverse to the connecting members, and wherein, in the deployed configuration, the compressive force is applied to the overlapping layers at locations where portions of the elongated element overlap, and wherein in the deployed configuration, the compressive force is concentrated at the center of the septal defect along the vertical center of the first closure member and the vertical center of the second closure member.

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