Active alignment of commissures in prosthetic heart valve implantation
A delivery device for a collapsible prosthetic heart valve includes an inner shaft, an outer shaft, and a distal sheath. The distal sheath may be disposed distal to the outer shaft and about a portion of the inner shaft to form a compartment with the inner shaft, the compartment being sized to receive the prosthetic heart valve in a collapsed condition. The inner shaft and the distal sheath may be movable relative to one another. The delivery device may also include a tube member and an outer sleeve overlying the tube member. The tube member may be configured to rotate or twist upon axial movement of the outer sleeve with respect to the tube member, the rotation or twisting of the tube member configured to rotate the prosthetic heart valve when the prosthetic heart valve is received within the compartment in the collapsed condition.
1. A prosthetic heart valve delivery system comprising:
a delivery device including:
an inner shaft;
an outer shaft;
a distal sheath disposed distal to the outer shaft and about a portion of the inner shaft to form a compartment with the inner shaft, the compartment being sized to receive the prosthetic heart valve in a collapsed condition, the inner shaft and the distal sheath being movable relative to one another; and
a guidewire having a proximal section, a distal anchoring section, and an annulus section between the proximal section and the distal anchoring section;
wherein the annulus section of the guidewire has a non-circular cross-sectional shape, the cross-sectional shape being taken along a plane that is transverse to a central longitudinal axis of the annulus section of the guidewire, that matches a non-circular cross-sectional shape of an interior guidewire lumen of the delivery device, the annulus section of the guidewire twisting along a length of the annulus section.
2. The prosthetic heart valve delivery system of claim 1 , wherein the distal anchoring section of the guidewire is formed as a coil.
3. The prosthetic heart valve delivery system of claim 2 , wherein the coil is sized and shaped to lodge into a left ventricular apex in order to anchor the distal anchoring section of the guidewire to a heart.
4. The prosthetic heart valve delivery system of claim 1 , wherein the non-circular cross-sectional shape of the annulus section is elliptical.
5. The prosthetic heart valve delivery system of claim 4 , wherein the elliptical shape has a major axis.
6. The prosthetic heart valve delivery system of claim 5 , wherein an orientation of the major axis is in different rotational positions along the length of the annulus section.
7. The prosthetic heart valve delivery system of claim 4 , wherein the non-circular cross-sectional shape of the interior guidewire lumen is elliptical.
8. The prosthetic heart valve delivery system of claim 7 , wherein the delivery device is not capable of freely rotating about the guidewire.