CN1065440C - Aquatically curing polyurethane bandage for orthotherapy - Google Patents
Aquatically curing polyurethane bandage for orthotherapy Download PDFInfo
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- CN1065440C CN1065440C CN96101819A CN96101819A CN1065440C CN 1065440 C CN1065440 C CN 1065440C CN 96101819 A CN96101819 A CN 96101819A CN 96101819 A CN96101819 A CN 96101819A CN 1065440 C CN1065440 C CN 1065440C
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- bandage
- polyurethane prepolymer
- orthotherapy
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- base polyurethane
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Abstract
The present invention discloses a water solidified polyurethane orthopedic bandage used for external fixation of the department of orthopedics. In main components of polyurethane prepolymer, a catalyst is alpha-(aminophenyl ethoxy-ethoxy)-beta-aminophenyl ethane and anhydrous potassium carbonate, a stabilizing agent is maleic anhydride or methane sulfonic acid, and in addition, an antisticking agent is a copolymer composed of propylene oxide and ethylene oxide. The orthopedic bandage manufactured by coating the polyurethane prepolymer on an areolated base material made of synthetic fiber non-woven cloth by a water needle entanglement method not only has the advantages of light weight, high strength, breathability, water resistance and good x-ray transmission of the original polyurethane orthopedic bandage but also has the advantages of soft substrate, high mould ability, good palpation and adaptability, no glove adhesion, convenient operation and better utility.
Description
Nearly one over 100 years, plaster bandage is a most widely used external fixation system in the orthopaedics therapy, for fracture patient, last Gypsum Fibrosum almost is indispensable treatment measure, but it also brings many miseries and inconvenience to patient, for example, to the clavicular fracture person, around plaster bandage was fixed and wanted at least, fracture of the carpal bone needed for three weeks, and fracture of thigh needed for eight to ten weeks, the position that has even need restore for more time, and patient skin is coated by Gypsum Fibrosum under the contact for a long time, very easily causes Pruritus, and the bad situation of inflammation ulcer, this phenomenon especially with summer for very; The patient is if go into the lavatory, take a sponge bath, when water spatters plaster bandage with water, mildew phenomena is softened in the easiest generation, easily deliquescing or the fracture of immersion back, and Gypsum Fibrosum is heavy, intensity difference, do solid afterwards nonelastic, airtight, and after binding plaster bandage, can't show the bone fracture restoration situation, also easy contaminated environment during dismounting by the X-ray line.
In order to overcome the shortcoming of plaster bandage, early eighties Bayer AG (No. the 4376438th, United States Patent (USP)) at first proposes on mesh fabric steep water curing urethane performed polymer and makes orthopaedic bandage and replace traditional plaster bandage, this is a great breakthrough in art of orthopedic surgery, because this bandage material has in light weight, intensity is big, breathability and water-resistance are good, and x line light transmission is strong and can make x light and take the photograph the medical science of sheet and inspect advantages such as function, so an invention is approved by countries in the world medical department.
Johnson ﹠amp in 1984; Johnson company (No. the 4433680th, United States Patent (USP)) proposes before to be used for the catalyst of the catalyst pair-morpholine Anaesthetie Ether (BMDEE) of polyurethane foam molding (No. the 3645925th, United States Patent (USP)) and elastic polyurethane body formed (No. the 4273885th, United States Patent (USP)) as the base polyurethane prepolymer for use as of orthopaedic bandage, and improved the shelf stable for periods of binder significantly, can reach more than 2 years, since then, the clinical practice of polyurethane bandage has entered a new stage.
No. 92108533.8 those disclosed herein of Chinese patent application case are a kind of water cure type polyurethane orthopaedic bandage material and manufacture method thereof as the orthopaedics external fixation, stabilizing agent in the Main Ingredients and Appearance base polyurethane prepolymer for use as is a maleic anhydride, and mixed catalyst α-(morpholino ethyoxyl-ethyoxyl)-β-morpholino ethane and Anhydrous potassium carbonate, can adsorb trace water and water solublity alkali chemical compound in the performed polymer owing to contain the maleic anhydride of conjugated double bond, and be tart maleic anhydride derivant behind the gel radical reaction that generates with isocyano, thereby stoped orthopaedic bandage material that the premature cure phenomenon of lay up period takes place before use.
Though the made orthopedic bandage of polyurethane of foregoing invention has certain effect, on reality is used, still have too late in the following shortcoming place of plaster bandage:
1. the polyurethane bandage price is very expensive, be plaster bandage six to octuple.
2. be the polyurethane bandage of base material with glass fibre mesh fabric, its clear-cut margin easily causes the incised wound accidental skin to the patient, and the incision fibre object easily unclamps again, glass fibre is easily absorbed by the patient and produces the skin allergy situation.
3. the binder material has certain elasticity, and contractility is bigger than plaster bandage, and mouldability is poor, can not change moulding very obediently fixingly because of the size in joint, camber etc., especially to the profile in the little joint of child, has suitable difficulty; And this kind polyurethane bandage needs Bian Baobianla in when wrapping, and operation is extremely required great effort, and produces the tense-lax inequality toward leaning on, especially then must cost more time and wrapping process to unstable fracture, and this more increases its degree of difficulty.
4. when binder used, viscosity was bigger, easily with the adhesion of operation glove, was difficult for drawing back, and made troubles to user.
5. after polyurethane bandage solidified, intensity was high and certain elasticity is arranged, and adopts electric saw and blade to be difficult for perforate, finishing or cutting disassembling.
So polyurethane bandage is applied to just being very limited clinically, still can't replace plaster bandage so far.
For overcoming the problem of above-mentioned existence, make polyurethane bandage become better external fixation system, in recent years, various countries produce the positive improved work ranks of research that with all strength drop into of company, manufacturer of polyurethane bandage.
The Reed of 3M company (No. the 4609578th, United States Patent (USP)) proposes Scotchcastz and Scothcast Pius Casting Tape is the sqcreen glass fibre object of base material, and high-elongation is radially arranged, and after heat cure was handled, the otch end points can not cause the phenomenon of scattering.
In order to improve and improve the fitness of binder lamination, Scholz etc. (U.S.P.Ser.NO07/376873) increase projection by annular knurl rail tube and cutter special technology on fiberglass substrate, and every place fiberglass substrate has the 300-700 projection.
Scholz etc. (No. the 4667661st, 4774937, United States Patent (USP)) are for reducing base polyurethane prepolymer for use as viscosity, in making the base polyurethane prepolymer for use as process, add and contain alkylene oxide resin or hydrophilic surfactant active on a small quantity, make the dynamic friction coefficient that applies binder surface, back be less than 1.2.
Ersfeld etc. (No. the 4841958th, United States Patent (USP)) are for overcoming the shortcoming that fiberglass substrate exists, employing is the binder base material by the Sontara Polyseter Tabris Style 8043 polyester nonwoven webs eye fabrics that Du Bai company produces, and uses and improves the moulding performance of binder.
Ersfeld (No. the 4683877th, United States Patent (USP)) has disclosed a kind of polyurethane prefabricated component orthopaedic bandage, provide and to produce suitable orthopedic mould in advance, and simplified the use of mould widely and eliminated the phenomenon of overlapping parcel bandage material, make in the operation more easy.
Johnson ﹠amp; Johnson company is that the polyurethane bandage quality of base material is owed shortcoming soft, the plasticity difference for solving glass fibre, Buese etc. (No. the 4668563rd, United States Patent (USP)) proposition mixed weaving in high-modulus glass fiber contains the high resiliency natural rubber fiber of base material cumulative volume 1-6%, make binder horizontal direction stretch range reach 40%-200%, and elongation is under 30% situation, and per inch intensity can maintain the 40-125 gram.
Another United States Patent (USP) is for No. 4899159 to provide to exempt the technology that otch produces burr and unclamps phenomenon, design the special-purpose coating machine of a cover, make the polyacrylic acid resin fat that can on fiberglass substrate, apply very soft, the low film amount of one deck in advance, when order was used, the polyurethane bandage otch is unlikely to be unclamped.
European patent proposed for No. 522826 before using polyurethane bandage, earlier hydrophilic polyethene ketopyrrolidine powder is coated in the mode on operator's glove, make the surface that forms the smooth moistening of one deck, the polyurethane resin that reaches by this on the binder can not cling glove, and it is effective easily that the operation of twining binder is had more.
It is α-(morpholino ethyoxyl-ethyoxyl)-β-morpholino ethane and Anhydrous potassium carbonate that the present invention removes the base polyurethane prepolymer for use as catalyst, stabilizing agent is outside maleic anhydride or the methanesulfonic acid, the antitack agent of then forming copolymer in addition by propylene oxide and ethylene oxide, the base polyurethane prepolymer for use as of Zu Chenging is coated in the orthopaedic bandage that is made on the mesh-shape non-woven fabrics of synthetic fiber base material that liquid drugs injection entanglement method is produced thus, remove and to keep the original substrate softness of orthopedic bandage of polyurethane, in light weight, the intensity height, mouldability, palpation is good, breathability, water-resistance and X-ray light transmission are good, and outside the characteristic of preserving between can be for a long time, more have all advantages of plaster bandage concurrently, promptly tack-free, easy to operate, the characteristics of adaptability and the wide model of application.
Specifically, the present invention relates to a kind of Aquatically curing polyurethane bandage for orthotherapy, it is coated on the netted non-woven fabrics of synthetic fiber base material that liquid drugs injection entanglement method is produced by stable base polyurethane prepolymer for use as and makes, this base polyurethane prepolymer for use as Main Ingredients and Appearance comprises catalyst, stabilizing agent, aromatic isocyanate, polyether polyol and antitack agent, wherein:
Catalyst is the mixture of α-(morpholino ethyoxyl-ethyoxyl)-β-morpholino ethane and Anhydrous potassium carbonate;
Stabilizing agent is maleic anhydride or methanesulfonic acid;
Aromatic isocyanate;
Polyether polyol;
Antitack agent is propylene oxide and ethylene oxide copolymer.
The used catalyst of the present invention comprises liquid phase and solid phase two parts, and liquid-phase catalyst is α-(morpholino ethyoxyl-ethyoxyl)-β-morpholino ethane, and its chemical formula is as follows:
Its content is the 0.1-10.0% of base polyurethane prepolymer for use as gross weight, and recommendation content is 0.5-2.0%.Wherein solid-phase catalyst is an Anhydrous potassium carbonate, and the subparticle of wearing into less than 100 μ m is distributed in the base polyurethane prepolymer for use as, and its content is the 1-10% of base polyurethane prepolymer for use as gross weight, and recommendation content is 4-6%.
Aromatic isocyanate in the base polyurethane prepolymer for use as of the present invention can be any aromatic isocyanate of setting forth in the polyurethane chemistry, for example, Inters Cience publishing house is in the chemical compound described in " polyurethane chemistry and technology " book of publication in 1962, aromatic isocyanate is the methyl diphenylene diisocyanate (claiming liquid MDI again) that contains carbodiimide groups, NCO content 29.5%.
Polyether polyol in the base polyurethane prepolymer for use as of the present invention is a polyether diols, and its molecular weight from 400 to 1000, the NCO in the base polyurethane prepolymer for use as: OH are 3: 1 to 6: 1.
The used stabilizing agent of the present invention is the maleic anhydride that contains conjugated double bond, its content is the 0.1-5.0% of base polyurethane prepolymer for use as, and recommendation content is 0.2-2.0%, or methanesulfonic acid, its content is the 0.01-0.5% of base polyurethane prepolymer for use as gross weight, and recommendation is 0.03-0.1%.
The antitack agent that the present invention is used, be hydrophilic macromolecule resin propylene oxide and ethylene oxide copolymer, mean molecule quantity is 14500, water content is less than 0.1%, to admix in base polyurethane prepolymer for use as less than 60 order solid particulate form, content is the 1.0-10.0% of base polyurethane prepolymer for use as gross weight, and recommendation content is 3.0-6.0%.
The used orthopedic bandage of polyurethane base material of the present invention is mesh-shape synthetic fibers ribbon or utilizes high pressure nozzle that thin synthetic fibers are made friends with through liquid drugs injection entanglement method to be made into the mesh-shape non-woven fabrics, the Unit Weight of non-woven fabrics is a 30-100 gram/rice, percentage elongation 20-60%, thickness 0.3-0.6 millimeter, the mesh aperture is between the 0.1-1.0 millimeter.
In view of the above, further specify the present invention for an embodiment:
One, the manufacture method prescription of base polyurethane prepolymer for use as:
36 parts of 64 parts of polyether diols of liquid MDI
Stabilizing agent
1.0 parts of maleic anhydrides
Or 0.05 part of methanesulfonic acid
Catalyst α-(morpholino ethyoxyl-ethyoxyl)
1.0 parts of-β-morpholino ethane
6.0 parts of Anhydrous potassium carbonates
0.2 part of froth breaking silicone oil
Antitack agent
4.0 parts of propylene oxide and ethylene oxide copolymers
Sharp 0.5 part of antioxidation
In 30 liter reactors of thermometer, agitator, charger and N2 import are housed respectively; add polyether diols, froth breaking silicone oil, antitack agent earlier by prescription; heat then to 55 ℃; dripped liquid MDI in 45 minutes, the control temperature is reacted after 1.5 hours at 60 ℃; adding catalyst and stabilizing agent fully stirred 10 minutes; being cooled to 40 ℃ and to put into container in N2 protection bottom discharge stand-by, is 1930 centipoises during 50 ℃ of the intrinsic viscositys of base polyurethane prepolymer for use as, and NCO content is 13.6%.
Two, the manufacture method of polyurethane tape binder
The base polyurethane prepolymer for use as of above-mentioned preparation is heated to 50 ℃, under water content 100ppm and cold drying environment, adopting two rollers to apply goes, through work feed, apply, rolling, shear, seal supervisor, performed polymer is coated on the polyester mesh-shape non-woven fabrics base material, heat-sealing is gone in the Aluminum-plastic composite bag then, 4 inches of every volumes are wide, 3.6 rice is long, coated weight is 115 grams, and air penetrability: 8 layers of binder are 490 liters/meter/second, compressive strength: INSTRON 1122 type testing machines, test speed 100MM/MIN, 8 layers of binder are 175N, binder soaks after five days intensity in the water of 20 ℃ of room temperatures constant, the binder that Kaifeng is enabled soaks 15 seconds in 25 ℃ of water after, be 70 minutes hardening time, binder quality softness, not sticking operator's glove, easy to use, removing to keep orthopedic bandage of polyurethane original in light weight, the intensity height, breathability, outside water-resistance and the good advantage of x line permeability, the advantage that more comprises plaster bandage and had is wrapped in the effect that patient's affected part can reach docile comfort.Molded good, bandage material is the accelerated ageing result under 70 ℃ of conditions, and it is still uncured to store for three weeks, has to be equivalent at ambient temperature, can store the time more than 2 years.
In sum, the present invention is except that can keeping original in light weight, intensity is high, breathability, water-resistance and x silk permeability the are good advantage of orthopedic bandage of polyurethane, and can obtain substrate softness, mouldability height, palpation and adaptability are good, tack-free cover, easy to operate and advantage that application is better, having overcome the existing shortcoming of prior art, is available valuable invention on the industry.
Claims (6)
1. Aquatically curing polyurethane bandage for orthotherapy, it is coated on the netted non-woven fabrics of synthetic fiber base material that liquid drugs injection entanglement method is produced by stable base polyurethane prepolymer for use as and makes, this base polyurethane prepolymer for use as Main Ingredients and Appearance comprises catalyst, stabilizing agent, aromatic isocyanate, polyether polyol and antitack agent, wherein:
Catalyst is the mixture of α-(morpholino ethyoxyl-ethyoxyl)-β-morpholino ethane and Anhydrous potassium carbonate;
Stabilizing agent is maleic anhydride or methanesulfonic acid;
Aromatic isocyanate;
Polyether polyol;
Antitack agent is propylene oxide and ethylene oxide copolymer.
2. the described Aquatically curing polyurethane bandage for orthotherapy of claim 1, the chemical structural formula of said catalyst α-(morpholino ethyoxyl-ethyoxyl)-β-morpholino ethane is as follows:
Content is the 0.1-10.0% of base polyurethane prepolymer for use as gross weight, and the Anhydrous potassium carbonate chemical formula is as follows: K
2CO
3
Anhydrous potassium carbonate is with the form less than the solid tiny particle of 100 μ m, and blending is in base polyurethane prepolymer for use as, and content is the 1-10% of base polyurethane prepolymer for use as weight.
3. the described Aquatically curing polyurethane bandage for orthotherapy of claim 1, said stabilizing agent is to have the conjugated double bond maleic anhydride, its content is the 0.1-5.0% of base polyurethane prepolymer for use as gross weight, or is methanesulfonic acid, and its content is the 0.01-0.5% of base polyurethane prepolymer for use as gross weight.
4. the described Aquatically curing polyurethane bandage for orthotherapy of claim 1, this aromatic isocyanate is the methyl diphenylene diisocyanate that contains the carbonization diimine, and described polyether polyol is a polyether diols, the equivalent proportion of NCO and OH is 3: 1 to 6: 1.
5. the described Aquatically curing polyurethane bandage for orthotherapy of claim 1, this antitack agent is the copolymer of propylene oxide and ethylene oxide, be blended in the base polyurethane prepolymer for use as with the form less than 60 purpose solid particles, its content is the 1.0-10.0% of base polyurethane prepolymer for use as gross weight.
6. the described Aquatically curing polyurethane bandage for orthotherapy of claim 1, this binder base material is to utilize high pressure nozzle that superfine synthesized fiber is made friends with through liquid drugs injection entanglement method to be made into the mesh-shape non-woven fabrics, its Unit Weight is a 30-100 gram/rice
2, percentage elongation 20-60%, thickness 0.3-0.6 millimeter, the mesh aperture is the 0.1-1.0 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96101819A CN1065440C (en) | 1996-01-22 | 1996-01-22 | Aquatically curing polyurethane bandage for orthotherapy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96101819A CN1065440C (en) | 1996-01-22 | 1996-01-22 | Aquatically curing polyurethane bandage for orthotherapy |
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| Publication Number | Publication Date |
|---|---|
| CN1155438A CN1155438A (en) | 1997-07-30 |
| CN1065440C true CN1065440C (en) | 2001-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN96101819A Expired - Fee Related CN1065440C (en) | 1996-01-22 | 1996-01-22 | Aquatically curing polyurethane bandage for orthotherapy |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100506530C (en) * | 2006-06-12 | 2009-07-01 | 苏州市好护理医疗用品有限公司 | Preparation method of viscous and elastic bandage |
| CN100540064C (en) * | 2006-06-26 | 2009-09-16 | 北京市津威康达医疗器械有限公司 | A kind of AGMA and preparation method thereof |
| CN102641519A (en) * | 2012-04-18 | 2012-08-22 | 周松 | Preparation method of external fixation plaster for treating fracture before moulding |
| EP3228330A1 (en) * | 2016-04-08 | 2017-10-11 | Mölnlycke Health Care AB | Composite materials in wound treatment |
| CN111407491B (en) * | 2020-04-09 | 2022-07-26 | 苏州国康医疗科技有限公司 | Orthopedic fixing device of fracture |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042081A (en) * | 1989-05-25 | 1990-05-16 | 上海医疗器械研究所 | Aquatically curing polyurethane bandage for orthotherapy |
| CN1073881A (en) * | 1992-08-14 | 1993-07-07 | 李海晟 | Polyurethane orthopaedic bandage material and preparation method thereof |
| CN1107741A (en) * | 1994-09-15 | 1995-09-06 | 郭建 | Air-permeable pressure-sensitive adhesive tape |
-
1996
- 1996-01-22 CN CN96101819A patent/CN1065440C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042081A (en) * | 1989-05-25 | 1990-05-16 | 上海医疗器械研究所 | Aquatically curing polyurethane bandage for orthotherapy |
| CN1073881A (en) * | 1992-08-14 | 1993-07-07 | 李海晟 | Polyurethane orthopaedic bandage material and preparation method thereof |
| CN1107741A (en) * | 1994-09-15 | 1995-09-06 | 郭建 | Air-permeable pressure-sensitive adhesive tape |
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| Publication number | Publication date |
|---|---|
| CN1155438A (en) | 1997-07-30 |
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