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US 2003/0120206 A1Published application
Balloon cannulae
OwnerRichard G. Cartledge, Leonard Y. Leeinventors
Life of this patent
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Abstract
A catheter has a balloon that overlies a trough in the catheter body such that when the balloon is deflated, the balloon does not protrude beyond the outer circumference of the catheter shaft. The wall of the catheter shaft is thicker along one side than along the remainder of the circumference of the catheter shaft to permit an inflation lumen to be disposed within the thick wall section without increasing the outer diameter of the remaining portion of the circumference.
Claims9
A balloon cannula, comprising:
- an elongated shaft having an exterior surface and having proximal and distal ends;
- a main lumen extending substantially the entire length of said shaft;
- a circumferential trough formed in said exterior surface of said elongated shaft, said circumferential trough having a reduced diameter in comparison to the adjacent circumference of said elongated shaft, and said trough having proximal and distal edges;
- a balloon overlying said circumferential trough of said elongated shaft, said balloon having a wall with interior and exterior surfaces, and said wall having proximal and distal portions, said interior surface of said balloon wall being secured at said proximal and distal portions to said proximal and distal edges of said trough in a fluid-tight manner;
- and
- an inflation lumen formed in said elongated shaft and terminating at a port opening beneath said balloon, whereby fluid can be infused and withdrawn through said inflation lumen to inflate and to deflate said balloon.
3 more elements
A balloon cannula, comprising:
- an elongated shaft, said elongated shaft defining a longitudinal lumen, said elongated shaft having a central longitudinal axis, and said longitudinal lumen having a central longitudinal axis laterally offset from said central longitudinal axis of said elongated shaft;
- whereby said longitudinal lumen is eccentric with respect to said elongated shaft.
Dependencies are inferred from the claim text.