Medical devices with improved elastic response

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,...

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Bibliographische Detailangaben
Hauptverfasser:	THOMPSON, SAMUEL ANTHONY
Format:	Patent
Sprache:	eng
Schlagworte:	BANDAGES, DRESSINGS OR ABSORBENT PADS CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS DISINFECTION, STERILISATION, OR DEODORISATION OF AIR FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HUMAN NECESSITIES HYGIENE MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MEDICAL OR VETERINARY SCIENCE METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PROSTHESES TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	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.