摘要:
A stent (10) for use in a prosthetic heart valve has an annulus section (12) adapted for placement within the leaflets and annulus of the native heart valve. The annulus section has latch members (50) adapted to engage the leaflets of the native heart valve when prosthetic valve is implanted in the native valve. The latch members may hold the leaflets in engagement with the annulus section, and help to retain the prosthetic valve in position. The annulus section may have a non-circular cross-sectional shape.
摘要:
A collapsible prosthetic heart valve includes a stent and a valve assembly. The stent includes an annulus section and at least one foldable section. The stent is movable between an unfolded condition in which the foldable section is longitudinally spaced from the annulus section, and a folded condition in which the foldable section is at least partially positioned radially adjacent the annulus section. The valve assembly is positioned within the annulus section of the stent in the folded condition of the stent.
摘要:
A collapsible prosthetic heart valve includes a stent and a valve assembly. The stent includes an annulus section and at least one foldable section. The stent is movable between an unfolded condition in which the foldable section is longitudinally spaced from the annulus section, and a folded condition in which the foldable section is at least partially positioned radially adjacent the annulus section. The valve assembly is positioned within the annulus section of the stent in the folded condition of the stent.
摘要:
A stent (10) for use in a prosthetic heart valve has an annulus section (12) adapted for placement within the ′ leaflets and annulus of the native heart valve. The annulus section has latch members (50) adapted to engage the leaflets of the native heart valve when prosthetic valve is implanted in the native valve. The latch members may hold the leaflets in engagement with the annulus section, and help to retain the prosthetic valve in position. The annulus section may have a non-circular cross-sectional shape.
摘要:
A prosthetic heart valve includes a stent having an expanded condition and a collapsed condition. The stent includes a plurality of distal cells, a plurality of proximal cells, a plurality of support struts coupling the proximal cells to the distal cells, and at least one support post connected to a plurality of proximal cells. The proximal cells are longitudinally spaced apart from the distal cells. Various strut configurations and connections of the struts to the proximal cells and of the proximal cells to the support post improve stent flexibility and reduce stress in the valve leaflets.
摘要:
A collapsible prosthetic heart valve includes a stent and a valve assembly. The stent has a proximal end and a distal end and includes a plurality of struts. The struts have free ends configured to inhibit tissue penetration. The valve assembly, including a plurality of leaflets, is disposed within the stent.
摘要:
A collapsible prosthetic heart valve includes a stent and a valve assembly. The stent has a proximal end and a distal end and includes a plurality of struts. The struts have free ends configured to inhibit tissue penetration. The valve assembly, including a plurality of leaflets, is disposed within the stent.
摘要:
A prosthetic heart valve includes a stent having an expanded condition and a collapsed condition. The stent includes a plurality of distal cells, a plurality of proximal cells, a plurality of support struts coupling the proximal cells to the distal cells, and at least one support post connected to a plurality of proximal cells. The proximal cells are longitudinally spaced apart from the distal cells. Various strut configurations and connections of the struts to the proximal cells and of the proximal cells to the support post improve stent flexibility and reduce stress in the valve leaflets.
摘要:
A stent delivery system includes inner and outer tubular members with the outer tubular member sized to pass through the body lumen to the deployment site and with the inner tubular member sized to be received within the outer tubular member. The inner and outer tubular members are axially slideable relative to one another between a transport position and a deploy position. The inner tubular member has a stent attachment location at its distal end. The stent attachment location is covered by the outer tubular member when the inner and outer tubular members are in the transport position. The stent attachment location is exposed when the inner and outer tubular members are in the deploy position. A first handle is provided rotatably connected to a proximal end of the outer tubular member for the first handle to transmit to the outer tubular member axial forces applied to the handle by an operator and to rotate freely about the axis relative to the outer tubular member.