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Process for producing absorption styptic sponge used in operation
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A production process and absorbency technology, which is applied in the new process field of producing surgical absorbent hemostatic sponge with animal leather, can solve the problems of inconvenient use
Inactive Publication Date: 2002-12-18
唐宝辉
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Summary
Abstract
Description
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Problems solved by technology
Inconvenient to use because the size and shape of the gelatin sponge block often does not fit the wound
Method used
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Examples
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Effect test
Embodiment 1
[0018] Step 1, with 10% Ca(OH) 2 Soak the washed animal leather dregs in an aqueous solution for 70 days to make expanded leather;
[0019] Step 2, after the swollen leather is washed with water of ph=6.5, the molar concentration is [H + ]=0.45(±1)mol / l, HCl, H mixed in a ratio of 4:6 2 SO 4 The solution is soaked until the pigment on the leather can be rubbed off, and the leather fiber is further expanded to facilitate the complete removal of harmful ingredients;
[0020] Step 3, adding NaOH to the soaking solution in Step 2, neutralizing the soaking solution to a pH value of 6.5, then mechanically stirring the leather in the soaking tank for 4 days to make a neutral leather;
[0021] Step 4: After washing the neutral leather with water, immerse in 6% HCl aqueous solution for 5 days, then dilute the HCl aqueous solution with water to a pH value of 5 to make the fibers in the leather more swollen Swell, forming colloidal leather;
[0022] Step 5: Add NaOH to the soaking s...
Embodiment 2
[0030] Step 1, with 8% Ca(OH) 2 Soak the washed animal leather dregs in an aqueous solution for 80 days to make expanded leather;
[0031] Step 2, after the swollen leather is washed with water of ph=6.5, the molar concentration is [H + ]=0.45(±1)mol / l, HCl, H mixed in a ratio of 5:5 2 SO 4 The solution is soaked until the pigment on the leather can be rubbed off, and the leather fiber is further expanded to facilitate the complete removal of harmful ingredients;
[0032] Step 3, adding NaOH to the soaking solution in Step 2, neutralizing the soaking solution to a pH value of 6.5, then mechanically stirring the leather in the soaking tank for 6 days to make a neutral leather;
[0033] Step 4: After washing the neutral leather with water, immerse in 6% HCl aqueous solution for 5 days, then dilute the HCl aqueous solution with water to a pH value of 5 to make the fibers in the leather more swollen Swell, forming colloidal leather;
[0034] Step 5: Add NaOH to the soaking so...
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PUM
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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...
Claims
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Application Information
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