CN112795995A - Dry spinning method for medical hemostatic fiber and manufacturing method thereof - Google Patents
Dry spinning method for medical hemostatic fiber and manufacturing method thereof Download PDFInfo
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- CN112795995A CN112795995A CN202110145665.1A CN202110145665A CN112795995A CN 112795995 A CN112795995 A CN 112795995A CN 202110145665 A CN202110145665 A CN 202110145665A CN 112795995 A CN112795995 A CN 112795995A
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F4/00—Monocomponent artificial filaments or the like of proteins; Manufacture thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L24/00—Surgical adhesives or cements; Adhesives for colostomy devices
- A61L24/001—Use of materials characterised by their function or physical properties
- A61L24/0015—Medicaments; Biocides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L24/00—Surgical adhesives or cements; Adhesives for colostomy devices
- A61L24/001—Use of materials characterised by their function or physical properties
- A61L24/0042—Materials resorbable by the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L24/00—Surgical adhesives or cements; Adhesives for colostomy devices
- A61L24/04—Surgical adhesives or cements; Adhesives for colostomy devices containing macromolecular materials
- A61L24/046—Surgical adhesives or cements; Adhesives for colostomy devices containing macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L24/00—Surgical adhesives or cements; Adhesives for colostomy devices
- A61L24/04—Surgical adhesives or cements; Adhesives for colostomy devices containing macromolecular materials
- A61L24/08—Polysaccharides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L24/00—Surgical adhesives or cements; Adhesives for colostomy devices
- A61L24/04—Surgical adhesives or cements; Adhesives for colostomy devices containing macromolecular materials
- A61L24/10—Polypeptides; Proteins
- A61L24/102—Collagen
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/04—Dry spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/103—Agents inhibiting growth of microorganisms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/20—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing organic materials
- A61L2300/216—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing organic materials with other specific functional groups, e.g. aldehydes, ketones, phenols, quaternary phosphonium groups
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/40—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a specific therapeutic activity or mode of action
- A61L2300/404—Biocides, antimicrobial agents, antiseptic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2400/00—Materials characterised by their function or physical properties
- A61L2400/04—Materials for stopping bleeding
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Epidemiology (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
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Abstract
The invention relates to the technical field of hemostatic fibers, in particular to dry spinning of medical hemostatic fibers, which comprises the following components in parts by weight: 60-80 parts of collagen, 2.5-4 parts of sucrose ester, 1-3 parts of glucuronic acid, 6-11 parts of hydroxyethyl cellulose, 1-3 parts of polyaspartic acid, 0.5-1.2 parts of antibacterial agent and 28-40 parts of distilled water.
Description
Technical Field
The invention relates to the technical field of hemostatic fibers, in particular to dry spinning of medical hemostatic fibers and a manufacturing method thereof.
Background
Bleeding from the wound surface is a common problem in wound emergency and common surgical operations. Excessive blood loss can endanger life, increase the chance of infection and reduce the success rate of the operation. Thus, appropriate hemostatic means can significantly shorten the time of surgery, and are important for trauma or post-operative recovery. There are many hemostasis methods, and according to the bleeding part, the size of the operation cavity and the compatibility with the organism, the blood coagulation function and the economic condition of the patient, the mechanical hemostasis method such as suture, ligation, electrocoagulation and the like or other hemostasis materials such as tourniquets, bandages, medical sponges, cotton swabs, gauzes and the like are commonly used clinically. However, conventional hemostatic materials do not have a good hemostatic effect in the face of complicated wound sites and extensive diffuse bleeding. The ideal hemostatic material has the advantages of rapid hemostasis, no infection risk, safety, no stimulation, no influence on tissue healing, difficult dissolution, rapid degradation and controllability. In recent years, with the intensive research on medical biological hemostatic materials, a large number of polymer materials, such as: collagen, silk fibroin, soybean protein, wheat protein, hyaluronic acid, polycaprolactone, gelatin, chitosan, cellulose, polylactic acid, polyethylene glycol, nano microcrystalline cellulose, hydrogel and the like, has low immunogenicity, good tensile strength, strong hemostatic function, good biodegradability, safety, no toxicity and no irritation, and is widely used for manufacturing various hemostatic sponge products. However, for irregular wounds or extensive diffuse bleeding during surgery, the hemostatic sponge cannot deeply contact and engage with the anastomotic wound, and the clinical application has great limitation.
Therefore, we propose dry spinning of medical hemostatic fiber and a method for manufacturing the same to solve the above problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides dry spinning of medical hemostatic fibers and a manufacturing method thereof.
The dry spinning method of the medical hemostatic fiber comprises the following components in parts by weight: 60-80 parts of collagen, 2.5-4 parts of sucrose ester, 1-3 parts of glucuronic acid, 6-11 parts of hydroxyethyl cellulose, 1-3 parts of polyaspartic acid, 0.5-1.2 parts of an antibacterial agent and 28-40 parts of distilled water.
Preferably, the composition comprises the following components in parts by weight: 70 parts of collagen, 3.3 parts of sucrose ester, 2 parts of glucuronic acid, 8 parts of hydroxyethyl cellulose, 2 parts of polyaspartic acid, 0.8 part of an antibacterial agent and 35 parts of distilled water.
Preferably, the antibacterial agent is a mixture of laurocapram, povidone iodine and wintergreen oil in a mass ratio of 2:1: 2.5.
Preferably, the collagen is extracted from any one of pig tendon, cattle tendon and silk.
Preferably, the relative molecular weight of the polyaspartic acid is 3000-4000.
Preferably, the manufacturing method of the dry spinning of the medical hemostatic fiber comprises the following steps:
s1, adding collagen, sucrose ester, glucuronic acid, hydroxyethyl cellulose, polyaspartic acid, an antibacterial agent and distilled water into a stirrer, stirring for 40-60min at the stirring temperature of 60-80 ℃, and filtering and defoaming after stirring;
and S2, performing dry spinning after defoaming, drying and forming, collecting, sterilizing and packaging to obtain the medical hemostatic fiber.
Preferably, the dry spinning process parameters are as follows:
spinning temperature: 85-95 ℃;
the spinning pressure is 2.5-4 MPa;
the spinning speed is 180-;
the spinning speed is 220 and 280 m/min;
the temperature of a spinning window is 88-95 ℃;
the temperature of the air inlet is 120 ℃ and 160 ℃;
the inlet air volume is 4-6m3/min；
The cutting length is 45-50 mm.
Preferably, in S1, the specific operation mode of the defoaming treatment process is to perform ultrasonic treatment on the mixed solution in a vacuum environment, and the ultrasonic treatment time is 5-15 min.
Preferably, in S2, ethylene oxide gas is used for sterilization.
The invention has the beneficial effects that: the dry spinning method provided by the invention is simple in preparation method, the adopted raw materials are degradable materials, the biocompatibility is good, adverse reactions are not easy to generate, the polyaspartic acid has certain water absorption performance, and can be absorbed by the dry spinning when a small amount of body fluid seeps from the vicinity of a wound, so that the wound can be conveniently recovered, the dry spinning strength can be improved through the glucuronic acid, and the glucuronic acid also has a certain sterilization effect, so that the breeding of bacteria at the wound is prevented, and the recovery of the wound is facilitated.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
In example 1, the dry spinning of the medical hemostatic fiber comprises the following components in parts by weight: 80 parts of collagen, 4 parts of sucrose ester, 3 parts of glucuronic acid, 11 parts of hydroxyethyl cellulose, 3 parts of polyaspartic acid, 1.2 parts of an antibacterial agent and 40 parts of distilled water.
Further, the antibacterial agent is a mixture of laurocapram, povidone iodine and wintergreen oil in a mass ratio of 2:1: 2.5.
Further, the collagen is extracted from any one of pig tendon, cattle tendon and silk.
Further, the relative molecular weight of polyaspartic acid is 3000-4000.
Further, the manufacturing method of the dry spinning of the medical hemostatic fiber comprises the following steps:
s1, adding collagen, sucrose ester, glucuronic acid, hydroxyethyl cellulose, polyaspartic acid, an antibacterial agent and distilled water into a stirrer, stirring for 40min at the stirring temperature of 60 ℃, and filtering and defoaming after stirring;
and S2, performing dry spinning after defoaming, drying and forming, collecting, sterilizing and packaging to obtain the medical hemostatic fiber.
Further, the dry spinning process parameters are as follows:
spinning temperature: 85 ℃;
the spinning pressure is 2.5 MPa;
the spinning speed is 180 m/min;
the spinning speed is 220 m/min;
the temperature of a spinning window is 88 ℃;
the temperature of an air inlet is 120 ℃;
inlet air volume of 4m3/min；
The cut length was 45 mm.
Further, in S1, the specific operation mode of the defoaming treatment process is to perform ultrasonic treatment on the mixed solution in a vacuum environment, and the ultrasonic treatment time is 5 min.
Further, in S2, ethylene oxide gas is used for sterilization during the sterilization process.
In example 2, the dry spinning of the medical hemostatic fiber comprises the following components in parts by weight: 80 parts of collagen, 4 parts of sucrose ester, 3 parts of glucuronic acid, 11 parts of hydroxyethyl cellulose, 3 parts of polyaspartic acid, 1.2 parts of an antibacterial agent and 40 parts of distilled water.
Further, the antibacterial agent is a mixture of laurocapram, povidone iodine and wintergreen oil in a mass ratio of 2:1: 2.5.
Further, the collagen is extracted from any one of pig tendon, cattle tendon and silk.
Further, the relative molecular weight of polyaspartic acid is 3000-4000.
Further, the manufacturing method of the dry spinning of the medical hemostatic fiber comprises the following steps:
s1, adding collagen, sucrose ester, glucuronic acid, hydroxyethyl cellulose, polyaspartic acid, an antibacterial agent and distilled water into a stirrer, stirring for 60min at the stirring temperature of 80 ℃, and filtering and defoaming after stirring;
and S2, performing dry spinning after defoaming, drying and forming, collecting, sterilizing and packaging to obtain the medical hemostatic fiber.
Further, the dry spinning process parameters are as follows:
spinning temperature: 95 ℃;
the spinning pressure is 4 MPa;
the spinning speed is 240 m/min;
the spinning speed is 280 m/min;
the temperature of a spinning window is 95 ℃;
the temperature of an air inlet is 160 ℃;
inlet air volume of 6m3/min；
The cut length was 50 mm.
Further, in S1, the specific operation manner of the defoaming treatment process is to perform ultrasonic treatment on the mixed solution in a vacuum environment, and the ultrasonic treatment time is 15 min.
Further, in S2, ethylene oxide gas is used for sterilization during the sterilization process.
In example 3, the dry spinning of the medical hemostatic fiber comprises the following components in parts by weight: 70 parts of collagen, 3.3 parts of sucrose ester, 2 parts of glucuronic acid, 8 parts of hydroxyethyl cellulose, 2 parts of polyaspartic acid, 0.8 part of an antibacterial agent and 35 parts of distilled water.
Further, the antibacterial agent is a mixture of laurocapram, povidone iodine and wintergreen oil in a mass ratio of 2:1: 2.5.
Further, the collagen is extracted from any one of pig tendon, cattle tendon and silk.
Further, the relative molecular weight of polyaspartic acid is 3000-4000.
Further, the manufacturing method of the dry spinning of the medical hemostatic fiber comprises the following steps:
s1, adding collagen, sucrose ester, glucuronic acid, hydroxyethyl cellulose, polyaspartic acid, an antibacterial agent and distilled water into a stirrer, stirring for 50min at the stirring temperature of 70 ℃, and filtering and defoaming after stirring;
and S2, performing dry spinning after defoaming, drying and forming, collecting, sterilizing and packaging to obtain the medical hemostatic fiber.
Further, the dry spinning process parameters are as follows:
spinning temperature: 90 ℃;
the spinning pressure is 3 MPa;
the spinning speed is 220 m/min;
the spinning speed is 260 m/min;
the temperature of a spinning window is 92 ℃;
the temperature of an air inlet is 140 ℃;
inlet air volume of 5m3/min；
The cut length was 48 mm.
Further, in S1, the specific operation mode of the defoaming treatment process is to perform ultrasonic treatment on the mixed solution in a vacuum environment, and the ultrasonic treatment time is 10 min.
Further, in S2, ethylene oxide gas is used for sterilization during the sterilization process.
In comparative example 1, in example 3, the dry spinning method of the medical hemostatic fiber comprises the following components in parts by weight: 70 parts of collagen, 3.3 parts of sucrose ester, 8 parts of hydroxyethyl cellulose, 2 parts of polyaspartic acid, 0.8 part of antibacterial agent and 35 parts of distilled water.
Further, the antibacterial agent is a mixture of laurocapram, povidone iodine and wintergreen oil in a mass ratio of 2:1: 2.5.
Further, the collagen is extracted from any one of pig tendon, cattle tendon and silk.
Further, the relative molecular weight of polyaspartic acid is 3000-4000.
Further, the manufacturing method of the dry spinning of the medical hemostatic fiber comprises the following steps:
s1, adding collagen, sucrose ester, hydroxyethyl cellulose, polyaspartic acid, an antibacterial agent and distilled water into a stirrer, stirring for 50min at the stirring temperature of 70 ℃, and filtering and defoaming after stirring;
and S2, performing dry spinning after defoaming, drying and forming, collecting, sterilizing and packaging to obtain the medical hemostatic fiber.
Further, the dry spinning process parameters are as follows:
spinning temperature: 90 ℃;
the spinning pressure is 3 MPa;
the spinning speed is 220 m/min;
the spinning speed is 260 m/min;
the temperature of a spinning window is 92 ℃;
the temperature of an air inlet is 140 ℃;
inlet air volume of 5m3/min；
The cut length was 48 mm.
Further, in S1, the specific operation mode of the defoaming treatment process is to perform ultrasonic treatment on the mixed solution in a vacuum environment, and the ultrasonic treatment time is 10 min.
Further, in S2, ethylene oxide gas is used for sterilization during the sterilization process.
In comparative example 2, in example 3, the dry spinning method of the medical hemostatic fiber comprises the following components in parts by weight: 70 parts of collagen, 3.3 parts of sucrose ester, 2 parts of glucuronic acid, 8 parts of hydroxyethyl cellulose, 0.8 part of antibacterial agent and 35 parts of distilled water.
Further, the antibacterial agent is a mixture of laurocapram, povidone iodine and wintergreen oil in a mass ratio of 2:1: 2.5.
Further, the collagen is extracted from any one of pig tendon, cattle tendon and silk.
Further, the manufacturing method of the dry spinning of the medical hemostatic fiber comprises the following steps:
s1, adding collagen, sucrose ester, glucuronic acid, hydroxyethyl cellulose, an antibacterial agent and distilled water into a stirrer, stirring for 50min at the stirring temperature of 70 ℃, and filtering and defoaming after stirring;
and S2, performing dry spinning after defoaming, drying and forming, collecting, sterilizing and packaging to obtain the medical hemostatic fiber.
Further, the dry spinning process parameters are as follows:
spinning temperature: 90 ℃;
the spinning pressure is 3 MPa;
the spinning speed is 220 m/min;
the spinning speed is 260 m/min;
the temperature of a spinning window is 92 ℃;
the temperature of an air inlet is 140 ℃;
inlet air volume of 5m3/min；
The cut length was 48 mm.
Further, in S1, the specific operation mode of the defoaming treatment process is to perform ultrasonic treatment on the mixed solution in a vacuum environment, and the ultrasonic treatment time is 10 min.
Further, in S2, ethylene oxide gas is used for sterilization during the sterilization process.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The dry spinning method of the medical hemostatic fiber is characterized by comprising the following components in parts by weight: 60-80 parts of collagen, 2.5-4 parts of sucrose ester, 1-3 parts of glucuronic acid, 6-11 parts of hydroxyethyl cellulose, 1-3 parts of polyaspartic acid, 0.5-1.2 parts of an antibacterial agent and 28-40 parts of distilled water.
2. The dry spinning method of medical hemostatic fiber according to claim 1, characterized by comprising the following components in parts by weight: 70 parts of collagen, 3.3 parts of sucrose ester, 2 parts of glucuronic acid, 8 parts of hydroxyethyl cellulose, 2 parts of polyaspartic acid, 0.8 part of an antibacterial agent and 35 parts of distilled water.
3. The dry spinning of medical hemostatic fiber according to claim 1, wherein the antibacterial agent is a mixture of laurocapram, povidone iodine, and wintergreen oil at a mass ratio of 2:1: 2.5.
4. The dry-spun medical hemostatic fiber according to claim 1, wherein the collagen is extracted from any one of pig tendon, cow tendon, and silk.
5. The dry-spun medical hemostatic fiber according to claim 1, wherein the relative molecular weight of the polyaspartic acid is 3000-4000.
6. The method for manufacturing the medical hemostatic fiber by dry spinning according to claim 1, comprising the steps of:
s1, adding collagen, sucrose ester, glucuronic acid, hydroxyethyl cellulose, polyaspartic acid, an antibacterial agent and distilled water into a stirrer, stirring for 40-60min at the stirring temperature of 60-80 ℃, and filtering and defoaming after stirring;
and S2, performing dry spinning after defoaming, drying and forming, collecting, sterilizing and packaging to obtain the medical hemostatic fiber.
7. The dry spinning manufacturing method of medical hemostatic fiber according to claim 6, characterized in that the dry spinning process parameters are:
spinning temperature: 85-95 ℃;
the spinning pressure is 2.5-4 MPa;
the spinning speed is 180-;
the spinning speed is 220 and 280 m/min;
the temperature of a spinning window is 88-95 ℃;
the temperature of the air inlet is 120 ℃ and 160 ℃;
the inlet air volume is 4-6m3/min；
The cutting length is 45-50 mm.
8. The method for manufacturing a medical hemostatic fiber by dry spinning according to claim 6, wherein the step of degassing in S1 is performed by subjecting the mixed solution to ultrasonic treatment in a vacuum environment for 5-15 min.
9. The method for manufacturing dry spinning of medical hemostatic fiber according to claim 6, wherein in the step S2, ethylene oxide gas is used for sterilization.
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| JP2017061757A (en) * | 2015-09-25 | 2017-03-30 | 兵庫県 | Production method of collagen fiber |
| CN110433325A (en) * | 2019-07-26 | 2019-11-12 | 杭州中科润德生物技术发展有限公司 | A kind of protide high polymer nanometer fiber hemostatic material and its preparation method and application |
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2021
- 2021-02-03 CN CN202110145665.1A patent/CN112795995A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0463887A2 (en) * | 1990-06-29 | 1992-01-02 | Koken Company Limited | Collagen fiber hemostatic material and method of producing the same |
| JPH0835193A (en) * | 1994-07-19 | 1996-02-06 | Mitsubishi Rayon Co Ltd | Production of collagen fiber nonwoven fabric sheet |
| US6361551B1 (en) * | 1998-12-11 | 2002-03-26 | C. R. Bard, Inc. | Collagen hemostatic fibers |
| CN1270240A (en) * | 2000-04-21 | 2000-10-18 | 中国石油化工集团公司 | Staltic fibre and its manufacture method |
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