Method of preparing a collagen sponge, a device for extracting a part of a collagen foam, and an elongated collagen sponge
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United States of America Patent
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Aug 29, 2006
Grant Date -
Oct 24, 2002
app pub date -
Jan 25, 2002
filing date -
Jan 25, 2001
priority date (Note) -
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Abstract
A method of preparing a collagen sponge comprises mixing air into a collagen gel, so as to obtain a collagen foam which is dried. From the dried product thereby obtained, collagen sponge is obtained by isolating parts of sponge with a chamber diameter of more than 0.75 mm and less than 4 mm, or parts with an average chamber diagonal dimension of 3 mm. The collagen sponge may be used as a material for sealing wounds, possibly with a coating comprising a fibrin glue, such as a combination of fibrinogen, thrombin and aprotinin. A device for extracting a part of a collagen foam and for degenerating another part of the collagen foam to a collagen gel is disclosed. An elongated collagen sponge having a through-going hole or bore and a flexible wall may be used for re-establishing walls in a mammalian gastrointestinal funnel or trachea system.
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