Handle mechanism and functionality for repositioning and retrieval of transcatheter heart valves
Improved catheter devices for delivery, repositioning and/or percutaneous retrieval of percutaneously implanted heart valves are described, including a medical device handle that provides an array of features helpful in conducting a percutaneous heart valve implantation procedure while variously enabling radial expansion or contraction and/or lateral positioning control over the heart valve during the medical procedure.
1. A medical device handle, the handle comprising:
an elongate body;
a plurality of filaments, the body adapted to receive the plurality of filaments for connection to a stent frame in a radial orientation;
a slide lock adapted to slide along the body;
a pivot fitment connected to the plurality of filaments, the plurality of filaments spaced in a radial orientation matching the radial orientation of the plurality of filaments at the stent frame; and
a spherical bearing surface,
wherein the pivot fitment rides on the spherical bearing surface,
wherein in a first axial position, the slide lock permits no rotation of the fitment around and no tilting of the fitment relative to an axis of the body,
wherein in a second axial position, the slide lock permits rotation of the fitment around but no tilting relative to the body axis, and
wherein in a third axial position, the slide lock permits tilting of the fitment relative to the axis of the body.
2. The handle of claim 1 , wherein in the third axial position the slide lock permits no rotation of the fitment around the axis of the body.
3. The handle of claim 1 , wherein the body includes a lumen for receiving the plurality of filaments.
4. The handle of claim 1 , further comprising a catheter hub including a flushing port.
5. The handle of claim 1 , wherein the body includes at least one side port.
6. The handle of claim 5 , wherein a plurality of side ports are provided.
7. The handle of claim 1 , further comprising a plurality of slots for the plurality of filaments.
8. The handle of claim 1 , further comprising a ring proximal to the fitment for simultaneously removing the plurality of filaments upon being cut.
9. The handle of claim 1 , further comprising a guidewire access port.
10. The handle of claim 1 , wherein the fitment includes a socket receiving the slide lock in the first and second axial positions.