Absorbing cover for wounds and the method for manufacturing thereof

US4536217A · kind A · utility

Assignees

• Ceskoslovenska akademie ved · CZ
• Akademie der Wissenchaften der DDR · DE

Inventors

• Fritz Loth · Teltow, DE
• Horst Dautzenberg · Teltow, DE
• Jiri Stamberg · Praha, CZ
• Jan Peska · Praha, CZ
• Dieter Bertram · Leipzig, DE
• Herbert Lettau · Leipzig, DE

Key dates

• Filing date: Sep 28, 1983
• Grant date: Aug 20, 1985
• Expiry date: Sep 28, 2003

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61L26/0023
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The invention pertains to the absorbing dressing for wounds, which consists of spherical particles of regenerated cellulose of the size 0.05-0.5 mm (preferably 0.05-0.3 mm) and a macroporous structure characterized by the cyclohexane regain of the dry material at least 0.2 ml/g. The dressing is prepared from the regenerated cellulose swollen with water by replacement with organic solvents and the subsequent drying of the product swollen with the said solvent. The porous structure of the dressing warrants that it can absorb excretions of the wound in the amount 1.5 to 5 g water per g of solids; the grainy macrostructure remains preserved during the absorption so that the material applied on the wound in the form of a powder in the layer 2-5 mm thick, in particular 2-3 mm thick, can be without difficulties and almost without pain rinsed away with water.