Collapse-resistant tubing for medical use
First Claim
1. A collapse-resistant catheter comprising a central tube, said tube having a second tube integral with its exterior surface, said second tube having a hollow spiral geometry of a configuration open at both ends and providing a collapse-resistant function by its geometry alone, said central and said second tube being coextruded.
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Accused Products
Abstract
A collapse-resistant catheter adapted for medical usage includes a central tube having a smooth outer wall rather than a corrugated outer wall characteristic of prior art collapse-resistant catheters. The tube includes an integral, spiral-shaped outer tube which provides the collapse-resistant characteristic. The spiral tube also provides an additional lumen. The center tube is adapted to provide for a multilumen structure not possible with corrugated prior art structures. The resulting structure, single or multilumen, can be made sufficiently small for insertion into the human body.
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Citations
6 Claims
- 1. A collapse-resistant catheter comprising a central tube, said tube having a second tube integral with its exterior surface, said second tube having a hollow spiral geometry of a configuration open at both ends and providing a collapse-resistant function by its geometry alone, said central and said second tube being coextruded.
Specification
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- Resources
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Current AssigneeFBK International Corporation
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Original AssigneeFBK International Corporation
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InventorsQuackenbush, John
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Primary Examiner(s)NOT, DEFINED
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Application NumberUS07/151,030Time in Patent Office743 DaysField of Search604/43-45, 604/280-283US Class Current604/527CPC Class CodesA61M 2025/004 characterized by lumina bei...A61M 25/0054 with regions for increasing...F16L 11/12 with arrangements for parti...
