Thermic Infusion Tubing with Improved Rebound from Folds, Kinks and Crushes
AssigneeLife Warmer Inc.
InventorsJohn Robert Pettini, Jeffrey Alan Garrett, Charles Griffith Reid
Life of this patent
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Abstract
A crush and kink resilient tubing system for an infusion system. The tubing system has an inner sheath with an inner wall forming a passageway for an infusion fluid, and an outer sheath surrounding the inner sheath, wherein the inner sheath material which has a structural rigidity greater than a structural rigidity of the material of the outer sheath, such that a neutral strain line is formed closer to the tube's inner wall than to its outer wall. This combination of materials characteristics and relative thicknesses provides autonomous recovery and rebounding of the tube following removal of a shape deforming force.
Claims14
A tubal segment for an infusion system, comprising:
- an inner sheath having an inner wall forming a passageway for an infusion fluid;
- and
- an outer sheath disposed on the inner sheath and having an outer wall forming an enclosure of the passageway, the inner sheath, and the outer sheath;
- wherein the inner sheath comprises a resilient material which has a structural rigidity greater than a material of the outer sheath, and wherein a ratio of a thickness of the inner sheath to a thickness of the outer sheath is between 1.3 and 3.9 such that a neutral strain line is located closer to the inner wall than to the outer wall, thereby providing autonomous recovery and rebounding of the tubal segment following removal, from the tubal segment, of a shape deforming force.
Dependencies are inferred from the claim text.