Medical devices with improved elastic response

Details Medical devices with improved elastic response Medical devices with improved elastic response

1996-04-24

1997-11-04

Azpuru, Carlos

Drug, bio-affecting and body treating compositions

Designated organic nonactive ingredient containing other...

Carbohydrate or lignin, or derivative

514778, 514779, 514781, 514782, 523113, 523115, 6048911, A61K 4736, A61K 914, A61K 922, A61K 202

Patent

active

056840519

ABSTRACT:
Elastically deformable medical devices, such as stents, having improved speed and degree of shape recovery are made by treating shaped hydrogels containing a polymer with a solution containing at least one elasticity agent, which may be nonionic or ionic. For example, polysaccharide-based hydrogels, such as barium alginate, are formed into tubing, shaped into pigtail stents, and exposed to an aqueous solution containing an elasticity agent such as potassium ions, sodium ions, sorbitol, glucose, citric acid, mannitol, dulcitol, or glycerol. The solution may also contain a crosslinking agent, such as calcium ions, to achieve the desired degree of elasticity.

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