Medical cannulae, delivery systems and methods
AssigneeCook Medical Technologies LLC
InventorsJoshua Frye Krieger, Melissa Lonn
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Abstract
The disclosure relates to cannulae, delivery systems, methods of making cannulae, and methods of making delivery systems. A delivery system comprises an elongate outer tubular member defining an outer tubular member lumen, a cannula having a circumferential wall extending between a proximal end and a distal end and defining an interior lumen, and an intraluminal medical device disposed within the outer tubular member lumen distal to the cannula and not about the cannula. A pattern of openings arranged in an interrupted spiral extends circumferentially along the cannula.
Claims18
A delivery system, comprising
- a cannula, comprising:
- an elongate tubular member having a lengthwise axis and a circumferential wall extending between a proximal end and a distal end and defining an interior lumen;
- the elongate tubular member having an intermediate axial portion extending between a proximal axial portion that includes the proximal end and a distal axial portion that includes the distal end;
- and
- a pattern of openings in the circumferential wall of the elongate tubular member, the pattern of openings comprising a first plurality of openings arranged in an interrupted spiral that extends circumferentially along the intermediate axial portion of the elongate tubular member;
- a second pattern of openings in the circumferential wall of the elongate tubular member, the second pattern of openings comprising a second plurality of openings that extends linearly along only a single side of the intermediate axial portion of the elongate tubular member, the openings of the second plurality of openings interspersed with the openings of the first plurality of openings;
- wherein the proximal axial portion and the distal axial portion are free of the pattern of openings and comprise an uninterrupted circumferential wall;
- and
- wherein the proximal portion is longer than the distal portion;
- an elongate outer tubular member defining an outer tubular member lumen;
- and
- an intraluminal medical device disposed within the outer tubular member lumen;
- wherein the cannula is disposed within the elongate outer tubular member lumen such that the cannula is disposed proximal to the intraluminal medical device and the intraluminal medical device is not disposed about the cannula.
Dependencies are inferred from the claim text.