Process for producing absorption styptic sponge used in operation

Abstract

The production process of surgical absorbable hemostatic sponge made of animal hide incldues the following main procedures: 1. soaking animal hide chips in Ca(OH)2 aqueous solution; 2. washing expanded high material with water with pH=6.5-8, then soaking the above-mentioned material in liquid mixture of HCL and H2SO4; 3. neutralizing the soaking liquor to make its pH value be 6.5 and stirring to obtain neutral hide materia; 4. washing the neutral hide material with water and pickling to form colloidal hide material; 5. neutralizing soaking liquor and stirring; 6. cooking colloidal hide material to obtain dilute liquid gelatin; 7. vacuum adsorption and filtering to obtain pure clean dilute gelatin liquor; 8. vacuum concentration; 9. foaming under the vacuum condition; 10. using high-pressure cold air to blow said foamed gelatin liquor to obtain spongy material.

Description

1. Technical field

[0001] The invention relates to a process for making a hemostatic sponge, in particular to a new process for producing surgically absorbable hemostatic sponge from animal leather. 2. Background technology

[0002] At present, the sponge used for hemostasis during the operation is a gelatin sponge, which is gelatin with holes in fact, and is generally in a block shape. When using it, choose a piece of comparable size to plug in the wound to stop bleeding. Gelatin sponge blocks are inconvenient to use because they are often not the right size and shape for the wound. 3. Contents of the invention

[0003] The present invention is to provide a new process for producing surgical absorbable hemostatic sponge from animal leather.

[0004] The production process of surgical absorbent hemostatic sponge, the specific process is:

[0005] Step 1, with 4-10% Ca(OH) 2 Soak the washed animal leather dregs in an aqueous solution for 70-90 days to make expanded leath...