CN111423726A - Preparation method of high-elasticity medical high polymer material - Google Patents
Preparation method of high-elasticity medical high polymer material Download PDFInfo
- Publication number
- CN111423726A CN111423726A CN202010336692.2A CN202010336692A CN111423726A CN 111423726 A CN111423726 A CN 111423726A CN 202010336692 A CN202010336692 A CN 202010336692A CN 111423726 A CN111423726 A CN 111423726A
- Authority
- CN
- China
- Prior art keywords
- parts
- container
- polymer material
- stirring
- elasticity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/02—Applications for biomedical use
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
- C08L2312/06—Crosslinking by radiation
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Abstract
The invention discloses a preparation method of a high-elasticity medical high polymer material in the technical field of medical materials, which comprises the following components in parts by weight: silicon rubber: 25-45 parts; heavy calcium powder: 15-35 parts; trioctyl trimellitate: 25-30 parts; polyvinyl chloride resin: 20-26 parts; high molecular modifier: 18-25 parts; thermal stabilizer: 21-27 parts; polylactic acid: 23-27 parts; light stabilizer: 22-32 parts; the preparation method of the high-elasticity medical polymer is simple, the elasticity and flexibility of the whole polymer are increased by adding the silicon rubber and the polylactic acid, the silicon rubber is processed according to the process requirements to prepare the rubber-state elastomer with certain strength and elongation, the rubber-state elastomer is free of toxic and side effects and easy to process, the polylactic acid is non-toxic, non-irritant, good in biocompatibility, biodegradable and absorbable, high in strength and strong in plasticity, and the elasticity of the medical polymer can be enhanced by adding materials.
Description
Technical Field
The invention relates to the technical field of medical materials, in particular to a preparation method of a high-elasticity medical high polymer material.
Background
The polymer materials commonly used in medical materials at present can be classified into natural, semisynthetic (modified natural polymer materials) and synthetic polymer materials according to different sources, the medical polymer materials have been widely applied in the medical field due to the special usability of the medical polymer materials, but the elasticity and flexibility of the traditional medical polymer materials are poor, so that a preparation method of the high-elasticity medical polymer material is provided.
Disclosure of Invention
The invention aims to provide a preparation method of a high-elasticity medical high polymer material, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of a high-elasticity medical high polymer material comprises the following components in parts by weight:
silicon rubber: 25-45 parts;
heavy calcium powder: 15-35 parts;
trioctyl trimellitate: 25-30 parts;
polyvinyl chloride resin: 20-26 parts;
high molecular modifier: 18-25 parts;
thermal stabilizer: 21-27 parts;
polylactic acid: 23-27 parts;
light stabilizer: 22-32 parts.
The preparation method comprises the following steps:
s1: selecting silicon rubber: 25-45 parts; heavy calcium powder: 15-35 parts; polyvinyl chloride resin: 20-26 parts; high molecular modifier: 18-25 parts; thermal stabilizer: 21-27 parts; polylactic acid: 23-27 parts; light stabilizer: 22-32 parts of the raw materials, sequentially pouring the raw materials into a stirring container, stirring and mixing at a high speed, and standing for 20-30 minutes;
s2: after completion, trioctyl trimellitate was poured into the stirred vessel: 25-30 parts of the raw materials, starting a stirring device, and stirring the mixture for at least 30-40 minutes, so that the material mixture is fully stirred to fully mix the materials together;
s3: after the operation in the step S2 is finished, pouring the mixture in the stirring container into a container, and refrigerating, wherein the refrigerating temperature is not higher than zero degree, and the refrigerating time is not less than 60-120 minutes;
s4: after the step of S3 is completed, taking out the container from the refrigeration device, drying the container with cold air, and putting the mixture into a screw extruder for processing, thereby extruding and granulating;
s5: and then, deleting and selecting the polymer particles through a vibration screening device, distinguishing the particles with different sizes, then carrying out ultrasonic cleaning on the polymer particles, cleaning for 30-45 minutes, removing adsorbates on the surfaces of the polymer particles, irradiating the medical polymer material through an ultraviolet lamp irradiation device after the completion, and activating active groups on the surface of the polymer material to obtain the medical polymer material.
Preferably: stirring device need carry out high temperature disinfection with the stirred vessel in the stirring device before using, and before carrying out high temperature disinfection, need carry out the disinfection of antiseptic solution comprehensive spraying.
Preferably: the container for carrying the mixture proposed in the step S3 is an open design, and the container is a rectangular container, and the depth of the rectangular container should not be greater than five centimeters.
Preferably: the light stabilizer is a light-shielding agent.
Preferably: the vibrations sieving mechanism is multistage layering sieving mechanism, the box that gathers materials of vibrations sieving mechanism all need spray the antiseptic solution and disinfect after every uses once, and the box that gathers materials just can use after the antiseptic solution on surface air-dries completely.
Compared with the prior art, the invention has the beneficial effects that: the preparation method of the high-elasticity medical polymer is simple, the elasticity and flexibility of the whole polymer are increased by adding the silicon rubber and the polylactic acid, the silicon rubber is processed according to the process requirements to prepare the rubber-state elastomer with certain strength and elongation, the rubber-state elastomer is free of toxic and side effects and easy to process, the polylactic acid is non-toxic, non-irritant, good in biocompatibility, biodegradable and absorbable, high in strength and strong in plasticity, and the elasticity of the medical polymer can be enhanced by adding materials.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A preparation method of a high-elasticity medical high polymer material comprises the following components in parts by weight:
silicon rubber: 25 parts of (1);
heavy calcium powder: 15 parts of (1);
trioctyl trimellitate: 25 parts of (1);
polyvinyl chloride resin: 20 parts of (1);
high molecular modifier: 18 parts of a mixture;
thermal stabilizer: 21 parts of (1);
polylactic acid: 23 parts;
light stabilizer: 22 parts of.
The preparation method comprises the following steps:
s1: selecting silicon rubber: 25 parts of (1); heavy calcium powder: 15 parts of (1); polyvinyl chloride resin: 20 parts of (1); high molecular modifier: 18 parts of a mixture; thermal stabilizer: 21 parts of (1); polylactic acid: 23 parts; light stabilizer: 22 parts of the raw materials are poured into a stirring container in sequence, stirred and mixed at a high speed, and then kept stand for 20 minutes;
s2: after completion, trioctyl trimellitate was poured into the stirred vessel: 25 parts, starting a stirring device, and stirring the mixture for at least 30 minutes, so that the material mixture is fully stirred and the materials are fully mixed together;
s3: after the operation in the step S2 is completed, pouring the mixture in the stirring container into a container, and performing cold storage, wherein the cold storage temperature is not higher than zero degree, and the cold storage time is not less than 60 minutes;
s4: after the step of S3 is completed, taking out the container from the refrigeration device, drying the container with cold air, and putting the mixture into a screw extruder for processing, thereby extruding and granulating;
s5: and then, deleting and selecting the polymer particles through a vibration screening device, distinguishing the particles with different sizes, then carrying out ultrasonic cleaning on the polymer particles, cleaning for 30 minutes, removing adsorbates on the surface of the polymer particles, irradiating the medical polymer material through an ultraviolet lamp irradiation device after the completion, and activating active groups on the surface of the polymer material to obtain the medical polymer material.
Wherein: before the stirring device is used, a stirring container in the stirring device needs to be disinfected at high temperature, disinfection solution needs to be sprayed comprehensively before the high-temperature disinfection, and the stirring container can be thoroughly sterilized and disinfected comprehensively through the high-temperature disinfection and the disinfection solution spraying, so that the breeding of bacteria is avoided;
the container for carrying the mixture proposed in the step S3 is of an open design, and the container is a rectangular container, and the depth of the rectangular container should not be greater than five centimeters;
the light stabilizer is a light shielding agent which has good protection effect and low price;
vibrations screening device is multistage layering screening device, vibrations screening device's the box that gathers materials all need spray the antiseptic solution and disinfect after every uses once, and the box that gathers materials just can use after the antiseptic solution on surface air-dries completely, avoids bacterial growing.
Example 2
A preparation method of a high-elasticity medical high polymer material comprises the following components in parts by weight:
silicon rubber: 35 parts of (B);
heavy calcium powder: 25 parts of (1);
trioctyl trimellitate: 28 parts of (1);
polyvinyl chloride resin: 23 parts;
high molecular modifier: 22 parts of (A);
thermal stabilizer: 24 parts of (1);
polylactic acid: 25 parts of (1);
light stabilizer: 28 parts.
The preparation method comprises the following steps:
s1: selecting silicon rubber: 25-45 parts; heavy calcium powder: 15-35 parts; polyvinyl chloride resin: 23 parts; high molecular modifier: 22 parts of (A); thermal stabilizer: 24 parts of (1); polylactic acid: 25 parts of (1); light stabilizer: 28 parts, pouring the materials into a stirring container in sequence, stirring and mixing at a high speed, and standing for 25 minutes after the stirring and mixing are finished;
s2: after completion, trioctyl trimellitate was poured into the stirred vessel: 28 parts, starting a stirring device, and stirring the mixture for not less than 35 minutes, so that the material mixture is fully stirred, and the materials are fully mixed together;
s3: after the operation in the step S2 is finished, pouring the mixture in the stirring container into a container, and refrigerating, wherein the refrigerating temperature is not higher than zero degree, and the refrigerating time is not less than 90 minutes;
s4: after the step of S3 is completed, taking out the container from the refrigeration device, drying the container with cold air, and putting the mixture into a screw extruder for processing, thereby extruding and granulating;
s5: and then, deleting and selecting the polymer particles through a vibration screening device, distinguishing the particles with different sizes, then carrying out ultrasonic cleaning on the polymer particles, cleaning for 38 minutes, removing adsorbates on the surface of the polymer particles, irradiating the medical polymer material through an ultraviolet lamp irradiation device after the completion, and activating active groups on the surface of the polymer material to obtain the medical polymer material.
Wherein: before the stirring device is used, a stirring container in the stirring device needs to be disinfected at high temperature, disinfection solution needs to be sprayed comprehensively before the high-temperature disinfection, and the stirring container can be thoroughly sterilized and disinfected comprehensively through the high-temperature disinfection and the disinfection solution spraying, so that the breeding of bacteria is avoided;
the container for carrying the mixture proposed in the step S3 is of an open design, and the container is a rectangular container, and the depth of the rectangular container should not be greater than five centimeters;
the light stabilizer is a light shielding agent which has good protection effect and low price;
vibrations screening device is multistage layering screening device, vibrations screening device's the box that gathers materials all need spray the antiseptic solution and disinfect after every uses once, and the box that gathers materials just can use after the antiseptic solution on surface air-dries completely, avoids bacterial growing.
Example 3
A preparation method of a high-elasticity medical high polymer material comprises the following components in parts by weight:
silicon rubber: 45 parts of (1);
heavy calcium powder: 35 parts of (B);
trioctyl trimellitate: 30 parts of (1);
polyvinyl chloride resin: 26 parts of (1);
high molecular modifier: 25 parts of (1);
thermal stabilizer: 27 parts of (1);
polylactic acid: 27 parts of (1);
light stabilizer: 32 parts of.
The preparation method comprises the following steps:
s1: selecting silicon rubber: 45 parts of (1); heavy calcium powder: 35 parts of (B); polyvinyl chloride resin: 26 parts of (1); high molecular modifier: 25 parts of (1); thermal stabilizer: 27 parts of (1); polylactic acid: 27 parts of (1); light stabilizer: 32 parts of materials are poured into a stirring container in sequence, high-speed stirring and mixing are carried out, and standing is carried out for 30 minutes after the materials are completely stirred;
s2: after completion, trioctyl trimellitate was poured into the stirred vessel: 30 parts, starting a stirring device, and stirring the mixture for not less than 40 minutes, so that the material mixture is fully stirred, and the materials are fully mixed together;
s3: after the operation in the step S2 is finished, pouring the mixture in the stirring container into a container, and refrigerating, wherein the refrigerating temperature is not higher than zero degree, and the refrigerating time is not less than 120 minutes;
s4: after the step of S3 is completed, taking out the container from the refrigeration device, drying the container with cold air, and putting the mixture into a screw extruder for processing, thereby extruding and granulating;
s5: and then, deleting and selecting the polymer particles through a vibration screening device, distinguishing the particles with different sizes, then carrying out ultrasonic cleaning on the polymer particles, cleaning for 45 minutes, removing adsorbates on the surface of the polymer particles, irradiating the medical polymer material through an ultraviolet lamp irradiation device after the completion, and activating active groups on the surface of the polymer material to obtain the medical polymer material.
Wherein: before the stirring device is used, a stirring container in the stirring device needs to be disinfected at high temperature, disinfection solution needs to be sprayed comprehensively before the high-temperature disinfection, and the stirring container can be thoroughly sterilized and disinfected comprehensively through the high-temperature disinfection and the disinfection solution spraying, so that the breeding of bacteria is avoided;
the container for carrying the mixture proposed in the step S3 is of an open design, and the container is a rectangular container, and the depth of the rectangular container should not be greater than five centimeters;
the light stabilizer is a light shielding agent which has good protection effect and low price;
vibrations screening device is multistage layering screening device, vibrations screening device's the box that gathers materials all need spray the antiseptic solution and disinfect after every uses once, and the box that gathers materials just can use after the antiseptic solution on surface air-dries completely, avoids bacterial growing.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A preparation method of a high-elasticity medical high polymer material is characterized by comprising the following steps: the high-elasticity medical high polymer material comprises the following components in parts by weight:
silicon rubber: 25-45 parts;
heavy calcium powder: 15-35 parts;
trioctyl trimellitate: 25-30 parts;
polyvinyl chloride resin: 20-26 parts;
high molecular modifier: 18-25 parts;
thermal stabilizer: 21-27 parts;
polylactic acid: 23-27 parts;
light stabilizer: 22-32 parts;
the preparation method comprises the following steps:
s1: selecting silicon rubber: 25-45 parts; heavy calcium powder: 15-35 parts; polyvinyl chloride resin: 20-26 parts; high molecular modifier: 18-25 parts; thermal stabilizer: 21-27 parts; polylactic acid: 23-27 parts; light stabilizer: 22-32 parts of the raw materials, sequentially pouring the raw materials into a stirring container, stirring and mixing at a high speed, and standing for 20-30 minutes;
s2: after completion, trioctyl trimellitate was poured into the stirred vessel: 25-30 parts of the raw materials, starting a stirring device, and stirring the mixture for at least 30-40 minutes, so that the material mixture is fully stirred to fully mix the materials together;
s3: after the operation in the step S2 is finished, pouring the mixture in the stirring container into a container, and refrigerating, wherein the refrigerating temperature is not higher than zero degree, and the refrigerating time is not less than 60-120 minutes;
s4: after the step of S3 is completed, taking out the container from the refrigeration device, drying the container with cold air, and putting the mixture into a screw extruder for processing, thereby extruding and granulating;
s5: and then, deleting and selecting the polymer particles through a vibration screening device, distinguishing the particles with different sizes, then carrying out ultrasonic cleaning on the polymer particles, cleaning for 30-45 minutes, removing adsorbates on the surfaces of the polymer particles, irradiating the medical polymer material through an ultraviolet lamp irradiation device after the completion, and activating active groups on the surface of the polymer material to obtain the medical polymer material.
2. The method for preparing a high-elasticity medical polymer material according to claim 1, wherein the method comprises the following steps: stirring device need carry out high temperature disinfection with the stirred vessel in the stirring device before using, and before carrying out high temperature disinfection, need carry out the disinfection of antiseptic solution comprehensive spraying.
3. The method for preparing a high-elasticity medical polymer material according to claim 1, wherein the method comprises the following steps: the container for carrying the mixture proposed in the step S3 is an open design, and the container is a rectangular container, and the depth of the rectangular container should not be greater than five centimeters.
4. The method for preparing a high-elasticity medical polymer material according to claim 1, wherein the method comprises the following steps: the light stabilizer is a light-shielding agent.
5. The method for preparing a high-elasticity medical polymer material according to claim 1, wherein the method comprises the following steps: the vibrations sieving mechanism is multistage layering sieving mechanism, the box that gathers materials of vibrations sieving mechanism all need spray the antiseptic solution and disinfect after every uses once, and the box that gathers materials just can use after the antiseptic solution on surface air-dries completely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010336692.2A CN111423726A (en) | 2020-04-26 | 2020-04-26 | Preparation method of high-elasticity medical high polymer material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010336692.2A CN111423726A (en) | 2020-04-26 | 2020-04-26 | Preparation method of high-elasticity medical high polymer material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111423726A true CN111423726A (en) | 2020-07-17 |
Family
ID=71556814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010336692.2A Pending CN111423726A (en) | 2020-04-26 | 2020-04-26 | Preparation method of high-elasticity medical high polymer material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111423726A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113150468A (en) * | 2021-04-30 | 2021-07-23 | 中山大学孙逸仙纪念医院 | Medical material for preparing high-elasticity endoscope specimen fetching bag and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786708A (en) * | 2012-08-20 | 2012-11-21 | 太原理工大学 | Method for preparing antimicrobial medical polymer material |
| CN104140613A (en) * | 2014-07-18 | 2014-11-12 | 国家电网公司 | Power cable insulating layer material and preparing method thereof |
| CN106188977A (en) * | 2016-08-25 | 2016-12-07 | 芜湖市天雄新材料科技有限公司 | A kind of medical macromolecular materials and preparation method thereof |
-
2020
- 2020-04-26 CN CN202010336692.2A patent/CN111423726A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786708A (en) * | 2012-08-20 | 2012-11-21 | 太原理工大学 | Method for preparing antimicrobial medical polymer material |
| CN104140613A (en) * | 2014-07-18 | 2014-11-12 | 国家电网公司 | Power cable insulating layer material and preparing method thereof |
| CN106188977A (en) * | 2016-08-25 | 2016-12-07 | 芜湖市天雄新材料科技有限公司 | A kind of medical macromolecular materials and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| (苏）A•Г•什瓦尔茨 Б•H•金兹布尔格: "《橡胶与塑料及合成树脂的并用》", 30 November 1981, 化学工业出版社 * |
| 丁绍兰: "《革制品材料学》", 31 December 2019, 中国轻工业出版社 * |
| 辛浩波，等: "《塑料合金及塑橡共混改性：配方•工艺•性能•应用技术》", 31 May 2000, 中国轻工业出版社 * |
| 高士刚: "《皮鞋材料》", 31 May 1994, 中国轻工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113150468A (en) * | 2021-04-30 | 2021-07-23 | 中山大学孙逸仙纪念医院 | Medical material for preparing high-elasticity endoscope specimen fetching bag and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105194740B (en) | A kind of post-operation adhesion preventing hydrogel and preparation method thereof | |
| Zeng et al. | Characterization of silk fibroin/chitosan 3D porous scaffold and in vitro cytology | |
| SK287874B6 (en) | A method of preparing a collagen sponge, a device for extracting a part of a collagen foam, and en elongated collagen sponge | |
| Nkhwa et al. | Poly (vinyl alcohol): physical approaches to designing biomaterials for biomedical applications | |
| CN1340080A (en) | Hyaluronic acid gel composition, process for producing the same, and medical material containing the same | |
| CN107469151A (en) | A kind of alveolar bone repairing material and its preparation method and application | |
| US20180369450A1 (en) | Method for preparing cell growth scaffold having structural memory properties | |
| CN111423726A (en) | Preparation method of high-elasticity medical high polymer material | |
| CN107823699B (en) | Hemostatic anti-adhesion membrane and preparation method thereof | |
| Xing et al. | A novel visible light-curing chitosan-based hydrogel membrane for guided tissue regeneration | |
| JP2004059926A (en) | Starch hydrogel | |
| EP3305340B1 (en) | Cell-growing scaffold having structure memory property | |
| CN112267169A (en) | Degradable toothbrush main material with self-cleaning function | |
| CN106975099B (en) | Method for preparing collagen sponge | |
| CN115887732B (en) | Medical gelatin dressing and preparation method thereof | |
| CN102757625A (en) | Chitosan-polylactic acid porous composite material and preparation method thereof | |
| CN102309523B (en) | Dentoidin sponginum and preparation method thereof | |
| CN105056282A (en) | Starch porous particle hemostasis material and preparation method thereof | |
| CN108379645A (en) | A kind of antibacterial composite biological material of the acetate containing agarose and preparation method thereof | |
| CN113754994A (en) | Degradable material and preparation method thereof | |
| TWI840941B (en) | Method of manufacturing auto-crosslinked hyaluronic acid gel and products thereof | |
| CN115317670B (en) | Plastic calcined bone repair material and preparation method thereof | |
| CN108114313B (en) | Artificial bone material and preparation method of artificial bone | |
| CN102078641A (en) | Method for preparing anti-adhesive membrane for tendon ligaments | |
| JPS6239506A (en) | Filler for lacuna after extraction of tooth |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200717 |