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US 2018/0021550 A1Published application
Devices for extended shelf life of liquid core catheters
AssigneeRa Medical Systems, Inc.
InventorsJames B. LAUDENSLAGER, Dean S. IRWIN
Life of this patent
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Abstract
Devices and methods are discussed directed to the use of a low profile laser ablation catheter for use in laser ablation removal of arterial plaque blockages to restore blood flow in the treatment of arteriovenous fistulas. Also discussed are devices and methods directed to packaging, long term storage and sterilization of liquid core ablation catheters.
Claims7
A package assembly to extend a shelf life of a liquid core catheter, comprising:
- a liquid core catheter comprising a core liquid;
- a polymer spiral tube which includes an inner lumen filled with a storage liquid that is soluble in or miscible with the core liquid of the liquid core catheter and which is sealed at both ends to contain the storage liquid in the inner lumen of the polymer spiral tube;
- and
- a sealed pouch which is made of either metallized plastic or polychlorotrifluoroethylene that acts as a hermetic seal for liquids disposed within the sealed pouch and which includes a hermetically sealed inner volume with the polymer spiral tube and liquid core catheter being disposed within the hermetically sealed inner volume.
1 more element
A liquid core ablation catheter, comprising:
- a catheter tube comprising a fluoropolymer material;
- an internal coating disposed on an inner surface of the catheter tube, the internal coating including an amorphous fluoropolymer having a low index of refraction of less than about 1.34;
- an outer layer disposed on an outer surface of the catheter tube comprising polychlorotrifluoroethylene that acts as a barrier to water diffusion out of an inner lumen of the catheter tube;
- and
- a first solid window that seals the inner lumen at a first end of the catheter tube and a second solid window that seals the inner lumen at a second end of the catheter tube.
2 more elements
Dependencies are inferred from the claim text.