Mechanically expanding heart valve and delivery apparatus therefor
First Claim
Patent Images
1. An assembly comprising:
- a prosthetic valve comprising a radially expandable and compressible annular frame;
at least one linear actuator assembly coupled to the frame and configured to apply a distally directed force and/or a proximally directed force to the frame to radially expand or compress the frame; and
at least one locking mechanism coupled to the frame comprising a first sleeve member connected to the frame at a first location, a second sleeve member having internal threads and being connected to the frame at a second location, and a first screw configured to engage the internal threads of the second sleeve member to retain the frame in a radially expanded state, wherein when the prosthetic valve is in a radially compressed state the first screw is disengaged from the internal threads of the second sleeve member, and wherein the first screw is rotatable to engage the internal threads of the second sleeve member, after the prosthetic valve is radially expanded to a radially expanded state by the at least one linear actuator assembly.
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Accused Products
Abstract
An assembly can comprise a radially expandable and compressible annular frame, at least one linear actuator assembly coupled to the frame and at least one locking mechanism coupled to the frame. The linear actuator can be configured to apply a distally directed force and/or a proximally directed force to the frame to radially expand or compress the frame. The locking mechanism can comprise a first sleeve member connected to the frame at a first location, a second sleeve member having internal threads and being connected to the frame at a second location, and a first screw configured to engage the internal threads of the second sleeve member to retain the frame in a radially expanded state.
302 Citations
22 Claims
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1. An assembly comprising:
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a prosthetic valve comprising a radially expandable and compressible annular frame; at least one linear actuator assembly coupled to the frame and configured to apply a distally directed force and/or a proximally directed force to the frame to radially expand or compress the frame; and at least one locking mechanism coupled to the frame comprising a first sleeve member connected to the frame at a first location, a second sleeve member having internal threads and being connected to the frame at a second location, and a first screw configured to engage the internal threads of the second sleeve member to retain the frame in a radially expanded state, wherein when the prosthetic valve is in a radially compressed state the first screw is disengaged from the internal threads of the second sleeve member, and wherein the first screw is rotatable to engage the internal threads of the second sleeve member, after the prosthetic valve is radially expanded to a radially expanded state by the at least one linear actuator assembly. - View Dependent Claims (2, 3, 4, 5)
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6. An assembly comprising:
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a prosthetic valve comprising a radially expandable and compressible annular frame; at least one linear actuator assembly coupled to the frame and configured to apply a distally directed force and/or a proximally directed force to the frame to radially expand or compress the frame; and at least one locking mechanism coupled to the frame comprising a first sleeve member connected to the frame at a first location, a second sleeve member having internal threads and being connected to the frame at a second location, and a first screw configured to engage the internal threads of the second sleeve member to retain the frame in a radially expanded state; wherein the at least one linear actuator assembly comprises an actuator member configured to be releasably coupled to the frame; and wherein the at least one linear actuator assembly comprises a first threaded member connected to a distal end portion of the actuator member, the first threaded member being configured to releasably engage a second threaded member connected to the frame. - View Dependent Claims (7)
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8. An assembly comprising:
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a prosthetic valve comprising a radially expandable and compressible annular frame; at least one linear actuator assembly coupled to the frame and configured to apply a distally directed force and/or a proximally directed force to the frame to radially expand or compress the frame; at least one locking mechanism coupled to the frame comprising a first sleeve member connected to the frame at a first location, a second sleeve member having internal threads and being connected to the frame at a second location, and a first screw configured to engage the internal threads of the second sleeve member to retain the frame in a radially expanded state; and a locking tool configured to be releasably coupled to the first screw, the locking tool comprising a tool head configured to engage and produce rotation of the first screw when the locking tool is coupled to the first screw such that the first screw moves axially through the first sleeve member and the second sleeve member. - View Dependent Claims (9, 10, 11)
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12. An assembly comprising:
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a prosthetic valve comprising a radially expandable and compressible annular frame; and at least one expansion and locking mechanism comprising; a linear actuator connected to the frame, wherein the linear actuator is configured to apply a distally directed force and/or a proximally directed force to the frame to radially expand or compress the frame; a rotating member coaxially positioned relative to the linear actuator configured to retain the frame in a radially expanded state; a first sleeve member connected to the frame at a first location; and a second sleeve member having internal threads and being connected to the frame at a second location; wherein the linear actuator is releasably coupled to the frame; wherein the rotating member is a screw configured to engage the internal threads of the second sleeve member; and wherein the linear actuator extends through a lumen of the screw. - View Dependent Claims (13, 14, 15, 16)
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17. An assembly comprising:
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a prosthetic valve comprising a radially expandable and compressible annular frame; and at least one expansion and locking mechanism comprising; a linear actuator connected to the frame, wherein the linear actuator is configured to apply a distally directed force and/or a proximally directed force to the frame to radially expand or compress the frame; and a rotating member coaxially positioned relative to the linear actuator configured to retain the frame in a radially expanded state; wherein the linear actuator is an actuator screw having external threads and is connected to the frame at a first location; wherein the assembly further comprises a sleeve connected to the frame at a second location; wherein the actuator screw extends through a lumen of the sleeve; wherein the rotating member is a locking nut having internal threads configured to engage the threads of the actuator screw; and wherein the sleeve and the locking nut are configured such that the locking nut is prevented from moving distally beyond the sleeve in an axial direction. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification