Cannula with image markers to indicate expandable device size
AssigneeKyphon SARL
InventorsMICHAEL A. SMITH, SAMUEL LEE, EMILY BENSON
Life of this patent
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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.
Claims31
A cannula, comprising:
- 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 such that the at least one opaque marker for indicating the expanded size in an imaging system image.
A cannula, comprising:
- 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, the shaft portion including a scoop formed at the distal end for supporting a balloon;
- a hub attached to the proximal end of the shaft portion and including a transverse portion that extends transversely relative to the longitudinal axis of the shaft portion;
- radiopaque markers disposed on the transverse portion at positions corresponding to an expanded size of the balloon wherein one of the markers is located on the hub at a position corresponding to the scoop of the shaft portion and another marker is located on the hub at a position corresponding to an opposite side of the balloon from the scoop such that the radiopaque markers indicate the expanded size in an imaging system image;
- and
- one or more holes formed through the hub in the longitudinal direction, the holes configured to receive a stabilizing device.
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 expandable size;
- and
- imaging the hub such that the at least one opaque marker indicates the expanded size in an imaging system image.
A cannula for treating bone defects, the cannula comprising:
- a shaft portion extending along a longitudinal axis between a first end and a second end, the shaft portion comprising an inner surface defining a lumen extending between the first end and the second end, the first end comprising a first opening that is in communication with the lumen, the second end comprising a second opening that is in communication with the lumen;
- and
- a scoop portion extending from the second end of the shaft portion, the scoop portion comprising an inner surface that is continuous with the inner surface of the shaft portion.
Dependencies are inferred from the claim text.