Stent for the positioning and anchoring of a valvular prosthesis in an implantation site in the heart of a patient
First Claim
1. An expandable stent for implantation in a patient, comprising:
- a plurality of positioning arches, each having an apex oriented toward a proximal end of the stent and configured to be positioned radially outward with respect to a plurality of leaflets of a native valve;
a plurality of retaining arches, each having an apex oriented toward the proximal end of the stent and configured to be positioned radially inward with respect to the plurality of leaflets of the native valve;
a plurality of sets of closed cells, each set disposed circumferentially between an adjacent pair of the plurality of retaining arches; and
an annular collar attached to the respective apices of the plurality of retaining arches at a distal end of the annular collar.
7 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to a stent for the positioning and anchoring of a valvular prosthesis in an implantation site in the heart of a patient. Specifically, the present invention relates to an expandable stent for an endoprosthesis used in the treatment of a narrowing of a cardiac valve and/or a cardiac valve insufficiency. So as to ensure that no longitudinal displacement of a valvular prosthesis fastened to a stent will occur relative the stent in the implanted state of the stent, even given the peristaltic motion of the heart, the stent according to the invention comprises at least one fastening portion via which the valvular prosthesis is connectable to the stent. The stent further comprises positioning arches and retaining arches, whereby at least one positioning arch is connected to at least one retaining arch.
-
Citations
37 Claims
-
1. An expandable stent for implantation in a patient, comprising:
-
a plurality of positioning arches, each having an apex oriented toward a proximal end of the stent and configured to be positioned radially outward with respect to a plurality of leaflets of a native valve; a plurality of retaining arches, each having an apex oriented toward the proximal end of the stent and configured to be positioned radially inward with respect to the plurality of leaflets of the native valve; a plurality of sets of closed cells, each set disposed circumferentially between an adjacent pair of the plurality of retaining arches; and an annular collar attached to the respective apices of the plurality of retaining arches at a distal end of the annular collar. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. An expandable stent for implantation in a patient, comprising:
-
three and only three positioning arches, each having an apex oriented toward a proximal end of the stent and configured to be positioned radially outward with respect to a plurality of leaflets of a native valve; three and only three retaining arches, each having an apex oriented toward the proximal end of the stent and configured to be positioned radially inward with respect to the plurality of leaflets; three and only three sets of closed cells, each set disposed circumferentially between an adjacent pair of the plurality of retaining arches; and an annular collar attached to the respective apices of the three retaining arches, the annular collar defining a lattice structure about a circumference of the stent and having only a single row of closed cells. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. An expandable stent for implantation in a patient, comprising:
-
a plurality of positioning arches, each having an apex oriented toward a proximal end of the stent and configured to be positioned radially outward with respect to a plurality of leaflets of a native valve; a plurality of retaining arches, each having an apex oriented toward the proximal end of the stent and configured to be positioned radially inward with respect to the plurality of leaflets of the native valve; and a plurality of sets of closed cells, each set disposed circumferentially between an adjacent pair of the plurality of retaining arches; and a plurality of third arches, each having an apex oriented toward a distal end of the stent, opposite the proximal end of the stent, and each being substantially circumferentially aligned with a respective one of the plurality of positioning arches. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
-
-
35. An expandable stent for implantation in a patient, comprising:
-
a plurality of positioning arches, each having an apex oriented toward a proximal end of the stent and configured to be positioned radially outward with respect to a plurality of leaflets of a native valve; a plurality of retaining arches, each having an apex oriented toward the proximal end of the stent and configured to be positioned radially inward with respect to the plurality of leaflets of the native valve; and a plurality of sets of closed cells, each set disposed circumferentially between an adjacent pair of the plurality of retaining arches; and an annular collar attached to the respective apices of the plurality of retaining arches at a distal end of the annular collar, the annular collar defining a lattice structure about a circumference of the stent, wherein the annular collar includes a single row of closed cells.
-
-
36. An expandable stent for implantation in a patient, comprising:
-
a plurality of positioning arches, each having an apex oriented toward a proxima end of the stent and configured to be positioned radially outward with respect to a plurality of leaflets of a native valve; a plurality of retaining arches, each having an apex oriented toward the proxima end of the stent and configured to be positioned radially inward with respect to the plurality of leaflets of the native valve; and a plurality of sets of closed cells, each set disposed circumferentially between an adjacent pair of the plurality of retaining arches; wherein a prosthetic valve is attached to the stent via sutures to each of the retaining arches and each set of closed cells. - View Dependent Claims (37)
-
Specification