Retrievable tissue grasping devices, spacers, artificial valves and related methods
OwnerRaghuveer Basude, Shri Krishna Basudeinventors
Life of this patent
Estimating the term…
Abstract
A clip for immobilizing leaflets of a cardiac or venous valve includes a hub having a pair of tangle resistant spring-biased outer arms coupled to an inferior end of the hub. A pair of tangle-resistant spring-biased inner arms lies adjacent to the outer arms and is coupled to a superior end of the hub. The clip may incorporate adjustable spacers and retrievable post implantation. A delivery catheter is used to position the valve clip adjacent a target valve while the outer and inner arms are biased in an opened position relative to each other. After the valve leaflets are located between the opened outer and inner arms, the biasing forces may be released to allow the clip to self-close over the valve leaflets.
Claims18
A method for implanting a closure device on a patient's native valve, the method comprising:
- providing a closure device comprising at least a first pair of capture springs including an atrial capture spring and an opposed ventricular capture spring, wherein the capture springs each have base ends and free ends, and wherein the base ends are coupled together and the free ends close together when unconstrained and elastically separate in response to a separating force;
- constraining the closure device in a lumen of a delivery catheter so the atrial and posterior capture spring are straightened;
- positioning a distal end of the delivery catheter adjacent to the patient's valve;
- releasing the ventricular capture spring from the lumen of the delivery catheter to engage a ventricular surface of a valve leaflet;
- releasing the atrial capture spring from the lumen of the delivery catheter to engage an atrial surface of the valve leaflet, thereby implanting the closure device to the patient's native valve, wherein the atrial and ventricular capture springs self-close over the valve leaflet to affix to said leaflet, and wherein the closure device is detached from the delivery catheter after the closure device has been implanted;
- and
- capturing a capturable feature on the closure device and retrieving the closure device using the capturable feature after the closure device has been implanted and detached from the delivery catheter.
Dependencies are inferred from the claim text.