Adjustable implant system
First Claim
1. A system for treating a heart valve, the system comprising:
- an adjustable annuloplasty ring configured to be attached to or near a cardiac valve annulus, the adjustable annuloplasty ring comprising;
a tubular body member;
one or more adjustable members, the tubular body member and the one or more adjustable members forming a ring shape;
an internal magnet within the tubular body member, the internal magnet configured to rotate in response to a rotating external magnetic field;
a first lead screw coupled to a first end of the internal magnet by a first drive cable, wherein rotation of the internal magnet rotates the first drive cable which communicates said rotation to the first lead screw; and
a drive nut coupled to the one or more adjustable members, wherein threads of the drive nut engage threads of the first lead screw, and wherein rotation of the first lead screw advances the first lead screw through the drive nut to pull or push the one or more adjustable members changing a dimension of the ring shape.
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Accused Products
Abstract
Systems and methods treat a heart valve using a magnetically adjustable annuloplasty ring attached to or near a cardiac valve annulus. A changing magnetic field may be used to selectively increase or decrease a circumference of, or otherwise modify the shape of, the implanted annuloplasty ring. The adjustable annuloplasty ring includes a tubular body member, one or more adjustable members, and an internal magnet within the tubular body member. The tubular body member and the one or more adjustable members form a ring shape. The internal magnet is configured to rotate in response to a rotating external magnetic field. The internal magnet is coupled to the one or more adjustable members to change a dimension of the ring shape as the internal magnet rotates. A system for treating a heart valve may include an external adjustment device having one or more external magnets to generate the rotating external magnetic field.
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Citations
8 Claims
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1. A system for treating a heart valve, the system comprising:
an adjustable annuloplasty ring configured to be attached to or near a cardiac valve annulus, the adjustable annuloplasty ring comprising; a tubular body member; one or more adjustable members, the tubular body member and the one or more adjustable members forming a ring shape; an internal magnet within the tubular body member, the internal magnet configured to rotate in response to a rotating external magnetic field; a first lead screw coupled to a first end of the internal magnet by a first drive cable, wherein rotation of the internal magnet rotates the first drive cable which communicates said rotation to the first lead screw; and a drive nut coupled to the one or more adjustable members, wherein threads of the drive nut engage threads of the first lead screw, and wherein rotation of the first lead screw advances the first lead screw through the drive nut to pull or push the one or more adjustable members changing a dimension of the ring shape. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
Specification