06217610 is referenced by 210 patents and cites 34 patents.

An expandable annuloplasty ring which may either expand spontaneously, in situ, as the patient grows or be expanded by surgical intervention by balloon dilatation. The distensible annuloplasty ring of the invention may be usable in pediatric patients whose growth, subsequent to surgical implantation of the ring, will necessitate subsequent enlargement of the ring to accommodate growth of the annulus. The ring may include relatively expandable segments to enable the enlargement thereof. The ring segments may include engaging teeth which cooperate with notches or slots formed in the tubes to provide some resistance to ring distention, while preventing collapse of the ring in the opposite direction. The teeth may be of different sizes or shapes to regulate the amount of force needed to expand the ring at different stages of the patient's growth. Alternatively, the adjustable ring includes a solid core of non-elastic material which plastically retains its shape upon natural expansion of the annulus, or after surgical expansion. In one embodiment, segments are coupled together with a discontinuity around the ring periphery. Pivot regions are provided between adjacent segments that, along with the discontinuity, enable the ring to expand upon annulus growth. The discontinuity may be positioned along the anterior side of the ring or around the posterior side. A further version makes use of telescoped segments with no discontinuity. The segments are coupled together with tubular sheaths, and expand without decoupling. A fabric covering may be omitted.

Title
Expandable annuloplasty ring
Application Number
9/124657
Publication Number
6217610 (B1)
Application Date
July 29, 1998
Publication Date
April 17, 2001
Inventor
Crystal Cunanan
Mission Viejo
CA, US
Van Le Huynh
Irvine
CA, US
Than Nguyen
Tustin
CA, US
Hung Lam
Norco
CA, US
Alain Carpentier
Paris
US
Alexandre Carpentier
Paris
US
Agent
Debra D Condino
US
Guy L Cumberbatch
US
Assignee
Edwards Lifesciences Corporation
CA, US
IPC
A61F 2/24
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