Cannula with image markers to indicate expandable size device
AssigneeMedtronic Holding Company SàRl
InventorsMichael A. Smith, Samuel Lee, Emily Benson
Life of this patent
Estimating the term…
Abstract
A cannula and method include a shaft portion having a proximal end, a distal end, a longitudinal axis and a lumen extending from the proximal end to the oppositely disposed distal end along the longitudinal axis. A hub is attached to the proximal end of the shaft portion and includes a transverse portion, which extends transversely relative to the longitudinal axis of the shaft portion. An opaque marker is disposed on the transverse portion at a position corresponding to an expanded size of an expandable element such that the opaque marker indicates the expanded size in an imaging system image.
Claims20
A treatment method, comprising:
- providing a cannula having a shaft portion having a proximal end, a distal end, a longitudinal axis and a lumen extending from the proximal end to the oppositely disposed distal end along the longitudinal axis, a hub attached to the proximal end of the shaft portion and including a transverse portion which extends transversely relative to the longitudinal axis of the shaft portion, and at least one opaque marker disposed on the transverse portion at a position corresponding to an expanded size of an expandable element;
- aligning the expandable element with the shaft portion;
- expanding the expandable element to the expanded size;
- and
- imaging the hub such that the at least one opaque marker indicates the expanded size in an imaging system image.
A treatment method, comprising:
- providing a cannula comprising:
- a shaft extending along a longitudinal axis between a proximal end and an opposite distal end, the distal end including an end portion forming a scoop,
- a balloon having an outer surface with opposite first and second sides, the first side being supported by the scoop, and
- a hub attached to the proximal end, the hub including a transverse portion extending transverse to the longitudinal axis, the transverse portion including a first marker located at a position corresponding to the scoop, the transverse portion including a second marker located at a position corresponding to the second side;
- and
- imaging the hub such that the first marker indicates a position of the scoop in an imaging system and the second marker indicates a position of the second side in the imaging system.
A treatment method, comprising:
- providing a cannula comprising:
- a shaft extending along a longitudinal axis between a proximal end and an opposite distal end, the distal end including an end portion forming a scoop,
- a balloon having an outer surface with opposite first and second sides, the first side being supported by the scoop, the balloon is movable between an unexpanded configuration and an expanded configuration in which the balloon has an expanded size, and
- a hub attached to the proximal end, the hub including a transverse portion extending transverse to the longitudinal axis, the transverse portion including a first radiopaque marker located at a position corresponding to the scoop, the first radiopaque marker including a shape for indicating an orientation of the scoop, the transverse portion including a second radiopaque marker located at a position corresponding to the second side when the balloon is in the expanded configuration, the second radiopaque marker not overlapping the first radiopaque marker in a longitudinal direction;
- moving the balloon from the unexpanded configuration to the expanded configuration;
- and
- imaging the hub such that the first marker indicates a position and orientation of the scoop in an imaging system and the second marker indicates a position of the second side in the imaging system.
Dependencies are inferred from the claim text.