CN1442206A - Medical surgical fixative material and its preparation method - Google Patents
Medical surgical fixative material and its preparation method Download PDFInfo
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- CN1442206A CN1442206A CN 03116238 CN03116238A CN1442206A CN 1442206 A CN1442206 A CN 1442206A CN 03116238 CN03116238 CN 03116238 CN 03116238 A CN03116238 A CN 03116238A CN 1442206 A CN1442206 A CN 1442206A
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- immobilization material
- vinyl acetate
- surgical immobilization
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Abstract
本发明提供了一种医用外科固定材料，包括氯醋树脂、乙烯－醋酸乙烯酯共聚树脂和增塑剂，其重量百分数分别为50～85％、5～30％和5～20％；该医用外科固定材料的制备方法是将各种成分按重量百分数进行共混，将共混物进行塑化，待充分塑化后挤出，根据需要压延、切割或注塑成所需的形状；该医用外科固定材料可在55℃左右的热水中软化并具有相当宽范围的可塑性和延伸率，可随意塑成与人体贴合的各种形状，而在室温下则很快固化并保持赋予的形状，且具有较高的使用强度，可作骨折病人骨折部位外固定和康复之用。The invention provides a medical surgical fixation material, which comprises vinyl acetate resin, ethylene-vinyl acetate copolymer resin and plasticizer, and the weight percentages are 50-85%, 5-30% and 5-20% respectively; the medical The preparation method of the surgical fixation material is to blend various components according to the weight percentage, plasticize the blend, extrude after fully plasticized, calender, cut or injection mold into the required shape according to the need; the medical surgical The fixing material can be softened in hot water at about 55°C and has a wide range of plasticity and elongation. It can be molded into various shapes that fit the human body at will, and it solidifies quickly at room temperature and maintains the given shape. And it has high service strength, and can be used for external fixation and rehabilitation of fractured parts of patients with fractures.
Description
Technical field
The present invention relates to a kind of medical surgical immobilization material and preparation method thereof, particularly relate to a kind of low-temperature thermoplastic medical surgical immobilization material and preparation method thereof.
Background technology
That the medical surgical immobilization material mainly contains is wooden, metallic or the not plastic clamping plate of plastics system, plaster bandage, polyurethane bandage etc.Not plastic clamping plate are difficult to be close to human body, do not have well fixing, support effect; The shortcoming of plaster bandage is that weight is bigger, and patient is handicapped, breathability is poor, saturating X-ray ability; Though polyurethane bandage is in light weight, good permeability but before using storage life short, use troublesome poeration, developed the low-temperature thermoplastic surgery fixed material for this reason.
The medical fixedly thermoplastic such as the natural resin orthotic material of usefulness of supplying that contains thermoplastic polymer at present, for example publication number is the Chinese patent application of CN9910817.6, ethylene-vinyl acetate copolymer resins self-adhesion immobilization material, for example publication number is the Chinese patent application of CN00111732.7, poly-trans isoprene clamping plate, for example publication number is the Chinese patent application of CN8710140.7 etc., though can be applicable to fracture fixation, but in various degree to exist heat distortion temperature low, intensity is low, easily deform in the use, especially the large part bone injury is not had fixation or cost an arm and a leg, shortcomings such as material source difficulty.For example publication number is CN8510027.8, and name is called disclosed technology in the Chinese patent of " prescription of thermoplasticity clamping plate and processing technique thereof ", and its heat distortion temperature is minimum only to be 37 ℃, the i.e. distortion of being heated slightly, and working strength is low, influences reliability.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of medical surgical immobilization material and preparation method thereof.
For realizing that the technical scheme that above-mentioned technical problem adopts is: a kind of medical surgical immobilization material, it is characterized in that: this medical surgical immobilization material comprises vinyl chloride-vinyl acetate resin, ethylene-vinyl acetate copolymer resins and plasticizer, and its percetage by weight is for being respectively 50～85%, 5～30% and 5～20%.
The content of vinylacetate is 5～20% in the described vinyl chloride-vinyl acetate resin, and preferred molecular weight ranges is 5000-9000; The content of vinylacetate is 20～40% in the described ethylene-vinyl acetate copolymer resins.
Described plasticizer is made up of primary plasticizer and secondary plasticizer(-iser).
Described primary plasticizer can be any one or a few in dibutyl phthalate, dioctyl phthalate, diisooctyl phthalate, tricresyl phosphate, the phosphoric acid one benzene dioctyl ester; Described secondary plasticizer(-iser) can be any one or a few in chlorinated paraffin wax, epoxy soybean oil, dioctyl adipate or other fatty acid esters.
This medical surgical immobilization material also comprises stabilizing agent, described stabilizing agent is one or more in dibasic Lead Phosphite, tribasic lead sulfate, dibasic lead stearate, calcium stearate, barium stearate, zinc stearate, di-n-butyltin dilaurate, the butyl maleate dibutyl tin, and its percetage by weight is 0.5～5%.
This medical surgical immobilization material also comprises lubricant, and described lubricant is any one or a few in stearic acid, calcium stearate, barium stearate, lead stearate, liquid paraffin or the silicone oil, and its percetage by weight is 0～5%.
This medical surgical immobilization material also comprises coloring agent, and described coloring agent is a coloring agent pharmaceutically commonly used, and its percetage by weight is 0～3%.
This medical surgical immobilization material also comprises filler, and described filler is a filler pharmaceutically commonly used, any one among preferred calcium carbonate, potter's clay, mica powder, Pulvis Talci, wood powder and the Plant fiber, and its percetage by weight is 0～15%.
A kind of preparation method of medical surgical immobilization material in turn includes the following steps:
A. various compositions are dropped in the extruder according to percetage by weight and carry out blend, make it to become uniform blend.
B. the formed blend of step a is plastified.
C. treat fully to extrude after the plasticizing.
D. roll as required, cut or be injection molded into required shape.
The preferred technical conditions of the present invention are: adopt the syllogic double screw extruder, the extruder barrel temperature is respectively: one section 90-100 ℃, and two-stage nitration 140-160 ℃, three sections 170-190 ℃.
This medical surgical immobilization material can roll into the sheet material of 1-3mm left and right thickness on calender, can beat the hole that diameter is 1-5mm on its surface as required, cuts into needed shape again, or directly is injection molded into required shape by Shooting Technique.
The invention has the beneficial effects as follows: prepared medical surgical immobilization material is at room temperature for rigid sheet, records its bending strength and records its tensile strength all more than 20MPa according to the method for testing of GB GB1040-70 according to the method for testing of GB GB1042-70.If when being heated to more than 55 ℃, material softening may be formed into required form, then maintains the original state after the cooling.This material is used for instead of gypsum the fracture site of fracture patient is done external fixation and rehabilitation protective effect, has easy to use, cleaning, in light weight, patient and feels advantage such as comfortable.
The specific embodiment
Below in conjunction with embodiment, describe the present invention, but be not limited to the content of present embodiment:
Embodiment 1
Get 80 parts of molecular weight ranges and be 5000 vinyl chloride-vinyl acetate resin, 10 parts of ethylene-vinyl acetate copolymer resinses, 5 parts of dibutyl phthalates, 5 parts of epoxy soybean oils, 5 parts of calcium carbonate, 2 parts of iron oxide yellows, after 2 parts of zinc stearates and 1 part of dibasic lead phosphite mix, be respectively in the extruder barrel temperature: one section 90 ℃, 140 ℃ of two-stage nitration, carry out blend in three sections 170 ℃ the double screw extruder, extrude, pelletizing, being injection molded into thickness then on injection machine is 1.5mm, long 8cm, wide 4cm, the sheet material of four jiaos of band circular arcs, stamping diameter on its surface again is 1mm, and density is 1 * 10
4Individual/square metre aperture, recording its bending strength according to the method for testing of GB GB1042-70 is 23MPa; Recording its tensile strength according to the method for testing of GB GB1040-70 is 25MPa.This sheet material can be used for fracture of finger patient's finger to be fixed, and earlier material is placed in the water bath with thermostatic control about 55 ℃ heating a moment during use, is entangled in the fracture site that binds up with gauze after the taking-up, can fix after the cooling.
Embodiment 2
Get 85 parts of molecular weight ranges and be 7000 vinyl chloride-vinyl acetate resin, 5 parts of ethylene-vinyl acetate copolymer resinses, 10 parts of dioctyl phthalates, 5 parts of potter's clay, 2 parts of zinc white after 2 parts of paraffin and 1 part of di-n-butyltin dilaurate mix, are respectively at barrel temperature: carry out blend in the double screw extruder that a section 95 ℃, two-stage nitration are 150 ℃, three sections 180 ℃, plasticate, on calender, roll into the sheet material that thickness is 2mm then, and on its surface with 2 * 10
4Individual/square metre density beat the aperture that diameter is 2mm, be cut to the shape of long 30cm, wide 25cm, four jiaos of band circular arcs, recording its bending strength according to the method for testing of GB GB1042-70 is 25MPa; Recording its tensile strength according to the method for testing of GB GB1040-70 is 27MPa.This sheet material can be used for the arm of arm fracture patient to be fixed, and earlier material is placed in the water bath with thermostatic control about 53 ℃ heating a moment during use, is entangled in the fracture site that binds up with gauze after the taking-up, and the cooling back is fixing to get final product.
Embodiment 3
Get 80 parts of molecular weight ranges and be 9000 vinyl chloride-vinyl acetate resin, 15 parts of ethylene-vinyl acetate copolymer resinses, 5 parts of dibutyl phthalates, 5 parts of chlorinated paraffin waxs, 5 parts of wood powders, 2 parts of chrome yellow, after 2 parts of silicone oil and 2 parts of barium-zinc stabilizers mix, be respectively at barrel temperature: carry out blend in the double screw extruder that a section 100 ℃, two-stage nitration are 160 ℃, three sections 190 ℃, plasticate, on calender, roll into thickness then and be 3 millimeters sheet material, and on its surface with 2 * 10
4Individual/square metre density beat the aperture that diameter is 3mm, be cut to the shape of long 60cm, wide 30cm, four jiaos of band circular arcs, recording its bending strength according to the method for testing of GB GB1042-70 is 29MPa; Recording its tensile strength according to the method for testing of GB GB1040-70 is 30MPa.This sheet material can be used for fracture of thigh patient's thigh to be fixed.Earlier material is placed in the water bath with thermostatic control about 57 ℃ heating a moment during use, is entangled in the fracture site that binds up with gauze after the taking-up, the cooling back is fixing to get final product.
Claims (9)
1. medical surgical immobilization material, it is characterized in that: this medical surgical immobilization material comprises vinyl chloride-vinyl acetate resin, ethylene-vinyl acetate copolymer resins and plasticizer, and its percetage by weight is respectively 50～85%, 5～30% and 5～20%.
2. medical surgical immobilization material according to claim 1 is characterized in that: the vinyl acetate content of described vinyl chloride-vinyl acetate resin is 5～20%, and molecular weight ranges is 5000-9000; The content of vinylacetate is 20～40% in the described ethylene-vinyl acetate copolymer resins; Described plasticizer is made up of primary plasticizer and secondary plasticizer(-iser).
3. medical surgical immobilization material according to claim 2 is characterized in that: described primary plasticizer comprises one or more in dibutyl phthalate, dioctyl phthalate, diisooctyl phthalate, tricresyl phosphate, the phosphoric acid one benzene dioctyl ester; Described secondary plasticizer(-iser) comprises one or more in chlorinated paraffin wax, epoxy soybean oil, dioctyl adipate or other fatty acid esters.
4. medical surgical immobilization material according to claim 1, it is characterized in that: also comprise stabilizing agent, described stabilizing agent is one or more in dibasic Lead Phosphite, tribasic lead sulfate, dibasic lead stearate, calcium stearate, barium stearate, zinc stearate, di-n-butyltin dilaurate, the butyl maleate dibutyl tin, and its percetage by weight is 0.5～5%.
5. medical surgical immobilization material according to claim 1, it is characterized in that: also comprise lubricant, described lubricant is any one or a few in stearic acid, calcium stearate, barium stearate, lead stearate, liquid paraffin or the silicone oil, and its percetage by weight is 0～5%.
6. medical surgical immobilization material according to claim 1 is characterized in that: also comprise coloring agent and filler pharmaceutically commonly used.
7. according to the preparation method of each described medical surgical immobilization material of claim 1～6, it is characterized in that: this method in turn includes the following steps:
A. various compositions are dropped in the extruder according to percetage by weight and carry out blend, make it to become uniform blend;
B. the formed blend of step a is plastified;
C. treat fully to extrude after the plasticizing;
D. roll as required, cut or be injection molded into required shape.
8. the preparation method of medical surgical immobilization material according to claim 7 is characterized in that: described extruder is three sections double screw extruders.
9. according to the preparation method of claim 7 or 8 described medical surgical immobilization materials, it is characterized in that: the barrel temperature of described extruder is respectively: one section 90～100 ℃, and 140～160 ℃ of two-stage nitration, three sections 170～190 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03116238 CN1209169C (en) | 2003-04-08 | 2003-04-08 | Medical surgical fixative material and its preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03116238 CN1209169C (en) | 2003-04-08 | 2003-04-08 | Medical surgical fixative material and its preparation method |
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| Publication Number | Publication Date |
|---|---|
| CN1442206A true CN1442206A (en) | 2003-09-17 |
| CN1209169C CN1209169C (en) | 2005-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03116238 Expired - Fee Related CN1209169C (en) | 2003-04-08 | 2003-04-08 | Medical surgical fixative material and its preparation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008138178A1 (en) * | 2007-05-11 | 2008-11-20 | Ji Zhang | An external fixation medical patch comprising shaping memory material and adhesive dressing material, and the method of using it |
| CN114716799A (en) * | 2022-03-22 | 2022-07-08 | 郑州圣莱特空心微珠新材料有限公司 | Lightweight high-strength low-temperature thermoplastic material and preparation method thereof |
-
2003
- 2003-04-08 CN CN 03116238 patent/CN1209169C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008138178A1 (en) * | 2007-05-11 | 2008-11-20 | Ji Zhang | An external fixation medical patch comprising shaping memory material and adhesive dressing material, and the method of using it |
| CN114716799A (en) * | 2022-03-22 | 2022-07-08 | 郑州圣莱特空心微珠新材料有限公司 | Lightweight high-strength low-temperature thermoplastic material and preparation method thereof |
| CN114716799B (en) * | 2022-03-22 | 2024-11-29 | 郑州圣莱特空心微珠新材料有限公司 | Light high-strength low-temperature thermoplastic material and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN1209169C (en) | 2005-07-06 |
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