Valve Prosthesis Fixation Techniques Using Sandwiching
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Abstract
A prosthesis including a distal fixation member that defines two or more engagement arms that are configured to apply a first axial force to tissue of the subject on a downstream side of the native valve complex. The prosthesis also includes a proximal fixation member configured to apply a second axial force to tissue of the subject on an upstream side of the native valve complex such that application of the first and second axial forces couples the prosthesis to the native valve complex. The proximal fixation member and the distal fixation member are fabricated as one integrated structure. The engagement arms and the proximal fixation member are configured to capture leaflets of the native valve complex therebetween without folding over of leaflets of the native valve complex, upon implantation of the prosthesis.
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Citations
221 Claims
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1-188. -188. (canceled)
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189. A prosthesis for implantation at a native valve complex of a subject, the prosthesis comprising:
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a distal fixation member, configured to be positioned downstream of the native valve complex, and shaped so as to define two or more engagement arms that are configured to apply a first axial force to tissue of the subject on a downstream side of the native valve complex; and a proximal fixation member coupled to the distal fixation member, the proximal fixation member configured to be positioned at least partially on an upstream side of the native valve complex, and to apply a second axial_force to tissue of the subject on an upstream side of the native valve complex, such that application of the first and second axial forces couples the prosthesis to the native valve complex, wherein the proximal fixation member and the distal fixation member are fabricated as one integrated structure, and wherein the engagement arms and the proximal fixation member are configured to capture leaflets of the native valve complex therebetween without folding over leaflets of the native valve complex, upon implantation of the prosthesis. - View Dependent Claims (190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206)
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207. A method for implanting a valve prosthesis at a native valve complex of a subject, the method comprising:
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positioning a distal fixation member of the valve prosthesis downstream of the native valve complex, the distal fixation member defining two or more engagement arms, the distal fixation member being positioned downstream such that the engagement arms apply a first axial force to tissue of the subject on a downstream side of the native valve complex; and positioning a proximal fixation member of the valve prosthesis at least partially upstream of the native valve complex, the proximal fixation member being fabricated as one integrated structure with the distal fixation member, the proximal fixation member being positioned such that the proximal fixation member applies a second axial force to tissue of the subject on an upstream side of the native valve complex, wherein the positioning the proximal and distal fixation members comprises capturing leaflets of the native valve complex between the proximal fixation member and the engagement arms without folding over leaflets of the native valve complex, wherein application of the first and second axial forces couples the prosthesis to the native valve complex. - View Dependent Claims (208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221)
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Specification