摘要:
A device for treatment of mitral annulus dilation comprising an elongate body (8') formed by a solid wire in the shape of an open U-shaped ring adapted to engage the wall of a coronary sinus (5) most adjacent to the mitral valve annulus when inserted into the coronary sinus; the elongate body consisting of a memory metal material which will bend when reverting to its original shape.
摘要:
Disclosed are methods and devices for determining valve leaflet orientation. A catheter (778) is provided with a conformable, radiopaque target (780). The target is deployed within a valve, such as the mitral valve. The conformable target conforms to the coaptation axis (788) in response to closing of the valve leaflets (776). That coaptation axis may then be visualized, and utilized to determine information about valve operation, or to assist in placement of devices in the vicinity of the valve.
摘要:
A stent for insertion into a vessel of a patient, comprising: a tubular member having a first smaller diameter for insertion into the vessel, and a second larger diameter for deployment within the vessel, and defining a longitudinal axis, said tubular member including a central portion comprised of a plurality of helical circumferential windings separated by a helical space, each of said windings including a plurality of undulations, with each said undulation being defined by two adjacent struts and a loop connecting said struts, at least one cylindrical end portion at an end of said central portion and, a transition zones between said central portion and each of said cylindrical end portions, said transition zone including a plurality of transition undulations having struts that progressively increase in length, wherein a relatively longer strut of said transition undulations has a relatively wider width than a relatively shorter strut of said transition undulations.
摘要:
A device for reshaping a mitral valve annulus (25), said device being elongate and having such dimensions as to be insertable into a coronary sinus (24). The device comprises fixing means (22, 23; 22a, 23a) for fixing the ends of the device within the coronary sinus (24); anda shape changing member (20a; 7; 7a; 9) extending between the fixing means (22, 23; 22a, 23a). The shape changing member (20a; 7; 7a; 9) includes a plurality of adjacent structural cells. The device includes resorbable delay means (21 a; 8; 8a; 10) that in a first configuration retrains at least two of said plurality of adjacent structural elements in a first, relatively elongate state of shape (K; D; E) and wherein the delay means in a second configuration releases said at least two adjacent structural elements to assume a second, relatively shortened state of shape (K'; D'; E'), thereby reducing a length of the shape-changing member (20a; 7; 7a; 9). The delay means (21 a; 8; 8a; 10) moves from its first configuration to its second configuration upon resorbtion of the delay means.
摘要:
A blood flow controlling apparatus (42) comprising: a valve means (52), the valve means movable between an open state and a closed state, the valve means in the open state extending primarily in a direction along blood flow, the valve means in the closed state extending in a direction transverse to blood flow, the valve means including a plurality of flaps (344) arranged side-by-side with adjacent surfaces having coaptation areas in close contact with each other to prevent leakage between the flaps; an anchoring means (54) arranged to fix the position of the apparatus in a circulatory system, the anchoring means disposed on an outflow side of the valve means; and an elongate connecting means (46) extending between the valve means and the anchoring means, the connecting means axially spacing the valve means from the anchoring means.
摘要:
A blood flow controlling apparatus (42) comprising: a valve means (52), the valve means movable between an open state and a closed state, the valve means in the open state extending primarily in a direction along blood flow, the valve means in the closed state extending in a direction transverse to blood flow, the valve means including a plurality of flaps (344) arranged side-by-side with adjacent surfaces having coaptation areas in close contact with each other to prevent leakage between the flaps; an anchoring means (54) arranged to fix the position of the apparatus in a circulatory system, the anchoring means disposed on an outflow side of the valve means; and an elongate connecting means (46) extending between the valve means and the anchoring means, the connecting means axially spacing the valve means from the anchoring means.
摘要:
The invention refers to a device for treatment of mitral annulus dilatation without the need for cardiopulmonary bypass, comprising an elongate body (8) made of memory metal which has a memory of an original shape, the elongate body having such dimensions as to be insertable through the venous system and into the coronary sinus (5) by a catheter technique and having two states, in a first of which the elongate body has a shape that is adaptable to the shape of the coronary sinus, and to the second of which the elongate body is transferable from the said first state by returning toward the original shape and assuming a reduced radius of curvature, whereby the radius of curvature of the coronary sinus is reduced as well as the circumference of the mitral valve annulus, when the elongate body is positioned in the coronary sinus.
摘要:
A system (1) for altering the geometry of a heart (100), comprising an annuloplasty ring; a set of elongate annulus-papillary tension members (21, 22, 23, 24), each of which tension members are adapted for forming a link between said ring (10) and a papillary muscle, each of said tension members (21, 22, 23, 24) having a first end (21b, 22b, 23b, 24b) and a second end (21a, 22a, 23a, 24a); and a first set of papillary anchors (30) for connecting each of the first ends (21b, 22b, 23b, 24b) of said tension members (21, 22, 23, 24) to said muscle; and where said annuloplasty ring (10) has at least one aperture (12, 13); where each of said annulus-papillary tension members (21, 22, 23, 24) are extendable through said ring (10) through said apertures (11, 12, 13), and through an atrium to an exterior side of said atrium, such that the distance of each link between the annulus and the muscles is adjustable from a position exterior to the heart.
摘要:
A device for heart valve repair including at least one tension member having a first end and second end. A basal anchor is disposed at the first end of the tension member and a secondary anchor at the second end. The method includes the steps of anchoring the basal anchor proximate a heart valve and anchoring the secondary anchor at a location spaced from the valve such that the chamber geometry is altered to reduce heart wall tension and/or stress on the valve leaflets.