Implantable device and delivery system for reshaping a heart valve annulus
First Claim
1. An implant for reshaping a mitral valve annulus, the implant comprising:
- a tubular frame having a proximal end, a distal end and a central lumen extending therethrough;
the frame having a first pair of adjacent struts joined at a proximal apex;
a shaft carried by the proximal apex and having an outer thread, the shaft configured to rotate about a rotation axis;
a collar carried by the frame and at least partially surrounding the first pair of adjacent struts, the collar having an inner thread engaged with the outer thread of the shaft, wherein rotation of the shaft about the rotation axis causes the collar to advance along the first pair of adjacent struts to change an angle between the first pair of adjacent struts, andan anchor carried by the frame and axially moveable between a first position and a second position, wherein in the first position the anchor advances axially relative to the frame in response to rotation of the anchor in a first direction, and in the second position the anchor is freely rotatable in the first direction without causing axial advance relative to the frame.
1 Assignment
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Accused Products
Abstract
Systems, devices and methods related to various heart valve implants and for delivery of those implants are described. The implants may be used to re-size a native valve annulus or to replace a native heart valve. The implants include a re-sizable frame having angled struts. The implant is secured to tissue with anchors that can rotate without axial advancement to engage tissue while drawing the implant closer to the tissue. Collars are used to decrease the angle between struts of a frame to contract the implant. The implants can include a rotatable shaft, such as a threaded shaft, located internally to an axially translatable collar. Rotation of the shaft transmits force to the collar to cause the collar to translate axially, closing the angle of adjacent struts and decreasing the width of the implant and thus of the annulus. The implants can be delivered, secured and contracted via a catheter. The implants are repositionable and retrievable via catheter.
502 Citations
20 Claims
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1. An implant for reshaping a mitral valve annulus, the implant comprising:
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a tubular frame having a proximal end, a distal end and a central lumen extending therethrough; the frame having a first pair of adjacent struts joined at a proximal apex; a shaft carried by the proximal apex and having an outer thread, the shaft configured to rotate about a rotation axis; a collar carried by the frame and at least partially surrounding the first pair of adjacent struts, the collar having an inner thread engaged with the outer thread of the shaft, wherein rotation of the shaft about the rotation axis causes the collar to advance along the first pair of adjacent struts to change an angle between the first pair of adjacent struts, and an anchor carried by the frame and axially moveable between a first position and a second position, wherein in the first position the anchor advances axially relative to the frame in response to rotation of the anchor in a first direction, and in the second position the anchor is freely rotatable in the first direction without causing axial advance relative to the frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An implant for reshaping a mitral valve annulus, the implant comprising:
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a tubular frame having a first pair of adjacent struts joined at a proximal apex; a rotatable shaft located at the proximal apex; a collar at least partially surrounding the first pair of adjacent struts and the shaft, wherein rotation of the rotatable shaft causes the collar to advance along the first pair of adjacent struts to decrease an angle between the first pair of adjacent struts, thereby contracting the implant, and an anchor carried by the frame and axially moveable between a first position and a second position, wherein in the first position the anchor advances axially relative to the frame in response to rotation of the anchor in a first direction, and in the second position the anchor is freely rotatable in the first direction without causing axial advance relative to the frame. - View Dependent Claims (17, 18, 19, 20)
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Specification