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US 2022/0022940 A1Published application
Devices and methods for transcatheter heart valve leaflet modification
AssigneeMayo Foundation for Medical Education and Research
InventorMayra Guerrero
Life of this patent
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Abstract
This document describes minimally invasive surgical instruments and methods for their use. For example, this document describes devices and methods for transcatheter modification of mitral valve leaflets to reduce or prevent the potential for full or partial blockages of the left ventricular outflow tract by anterior displacement of the anterior leaflet of the native mitral valve.
Claims20
A transcatheter heart valve leaflet cutter, comprising:
- an elongate catheter shaft;
- and
- a leaflet cutter comprising:
- a first shaft attached to and extending distally from a distal end of the catheter shaft;
- a C-shaped member with a first end attached to a distal end of the first shaft;
- a second shaft attached to a second end of the C-shaped member, the second shaft extending proximally away from the C-shaped member and terminating at a free end, wherein the second shaft comprises a cutting edge extending along an edge of the second shaft that faces an opposing edge of the first shaft, wherein the cutting edge comprises a sharp edge for cutting a heart valve leaflet;
- and
- an expandable member attached to and extending along the opposing edge of the first shaft, the expandable member being reconfigurable between:
- (i) a low-profile configuration in which the expandable member is spaced apart from the cutting edge and (ii) and expandable configuration in which the expandable member contacts the cutting edge.
6 more elements
A transcatheter heart valve leaflet cutter, comprising:
- an outer tube defining a first lumen and a slot along a distal end portion of the outer tube;
- an inner tube slidably disposed within the first lumen and defining a second lumen;
- a blade cable slidably disposed within the second lumen;
- a blade pivotably attached to a distal end of the blade cable;
- and
- an actuator attached to a proximal end of the blade cable, the actuator translatable in relation to the outer tube to cause the blade to move correspondingly in relation to the outer tube as the blade is extending transversely through the slot.
3 more elements
13-15. (canceled)
A transcatheter heart valve leaflet cutter, comprising:
- an outer tube defining a first lumen and a slot along a distal end portion of the outer tube;
- a blade shaft slidably disposed within the first lumen;
- a blade pivotably attached to a distal end of the blade shaft;
- and
- an actuator attached to a proximal end of the blade shaft, the actuator translatable in relation to the outer tube to cause the blade to move correspondingly in relation to the outer tube as the blade is extending transversely through the slot.
2 more elements
22-24. (canceled)
Dependencies are inferred from the claim text.