A METHOD OF MAKING ABSORBABLE MICROTUBES AND THE PRODUCT THEREOF

A method for making an absorbable microtube comprising the steps of a) extruding an absorbable polymer melt through a die (3) to produce a molten extrudate; b) passing the molten extrudate (14) vertically through an air gap ranging from about 0.1 to 0.5 inch as measured from the tip of the die to th...

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Bibliographische Detailangaben
Hauptverfasser:	CHEN, GAOYUAN, MATRUNICH, JAMES
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 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 DISINFECTION, STERILISATION, OR DEODORISATION OF AIR HUMAN NECESSITIES HYGIENE MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MEDICAL OR VETERINARY SCIENCE METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A method for making an absorbable microtube comprising the steps of a) extruding an absorbable polymer melt through a die (3) to produce a molten extrudate; b) passing the molten extrudate (14) vertically through an air gap ranging from about 0.1 to 0.5 inch as measured from the tip of the die to the surface of a liquid quenching medium (5) to produce a quenched extrudate; and c) drawing the quenched extrudate to produce a drawn tube (15) having an outer diameter of about 4 to about 12 mil; and an absorbable microtube that is made according to this method. L'invention concerne un procédé de fabrication de microtubes absorbables, qui consiste à: a) extruder un polymère absorbable fondu par une filière (3) afin de produire un extrudat fondu; b) passer l'extrudat fondu (14) verticalement à travers une lame d'air de dimension comprise entre environ 0,1 et 0,5 pouces, telle que mesurée de la tête de la filière à la surface d'un milieu d'hypertrempe (5), afin de produire un extrudat noyé; et c) étirer l'extrudat noyé afin de produire un tube étiré (15) présentant un diamètre extérieur d'environ 4 à 12 mils. L'invention concerne en outre un microtube absorbable fabriqué selon le procédé de l'invention.