JP2004073364A - Bandage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bandage incapable of being reacted with a measuring instrument sensing metal, suitable for fixing an affected part moderately, and capable of protecting fitting feeling to the body and impact from outside. <P>SOLUTION: This bandage has a securing part obtained by parallelly arranging long-length materials consisting of non-metallic material and having shape preserving property and rigidity in at least a part of a bandage base material, It is desirable that the long-length materials are of a resin bar compact. In the case of belt-like bandage, securing parts can be formed at a plurality of places at a proper interval per a single roll. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a dressing used for surgery or the like.
[0002]
[Prior art]
BACKGROUND ART Conventionally, casts using plaster have been used for fixing a fractured part in orthopedic surgery or the like. However, since it is made of gypsum, it is very heavy and places a heavy burden on the bones of the patient, and has poor breathability, causing inconvenience such as stuffiness and rash. In addition, plaster must be removed each time a medical measurement device that senses metal, such as X-ray photography, is inconvenient.
As an alternative to this, there is a net-like rigid bandage of a thermoplastic resin composition (Japanese Utility Model Application Laid-Open No. 58-145620, Utility Model Registration No. 3051373), but since it is entirely formed of a resin material, it is stretchable. I was missing. Therefore, when a bandage is wrapped around the affected part, it is bulky and cannot be wrapped well around a curved part such as a joint.
[0003]
On the other hand, a normal bandage is flexible, so it was necessary to wrap it with a splint to fix the affected part. In addition, in order to protect the affected part from external impact, it was necessary to increase the number of windings. As a method for solving the problem, a bandage having a certain degree of rigidity in the bandage is conceivable, and there is a fixed bandage obtained by impregnating a knitted fabric with a polymer (Japanese Patent Laid-Open No. 52-64192). However, the impregnated polymer deteriorates and comes off from the knitted fabric, and the portion directly touching the skin causes rash and itching. There is a bandage using glass fiber in one direction and normal fiber in the other direction (Japanese Patent Application Laid-Open No. 55-47861). However, if the glass fiber cracks, it may damage the skin and is dangerous. Met.
[0004]
[Problems to be solved by the invention]
An object of the present invention is to provide a bandage that does not react to a measuring device that senses metal, is suitable for appropriately fixing an affected part, and can also protect a body from a feeling of fit and an external impact. To get.
[0005]
[Means for Solving the Problems]
That is, the present invention is a bandage characterized in that at least a part of the bandage base material is made of a non-metallic material and has a fixing portion in which long objects having shape retention and / or rigidity are arranged in parallel. . ADVANTAGE OF THE INVENTION According to this invention, it does not respond to the measuring device which senses a metal, but can fix an affected part and can protect from a feeling of fit or external impact.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
Long object 　　
The long object according to the present invention is made of a nonmetallic material and has shape retention and / or rigidity. More preferably, the return angle by 90-degree bending is 20 degrees or less, further 15 degrees or less, and particularly preferably 10 degrees or less. As a long object having a shape-retaining shape, a long object having a return angle due to the 90-degree bending described above is particularly excellent in handleability, fit, and the like. Here, in the case of a thread shape, the return angle θ shown in FIG. 1B when bent 90 degrees as shown in FIG. 1A and left for 5 minutes is the return angle due to the 90-degree bending. The material having rigidity preferably has a flexural strength value of 0.7 kg / mm ² or more, preferably 3.5 kg / mm ² or more according to the measurement method ASTM D790.
[0007]
The raw material of the long product is not particularly limited as long as it is a nonmetallic material. Various non-metallic materials include known materials. Specific examples include natural materials such as muscles of plants and animals such as bamboo and trees, semi-synthetic resins such as carbon fibers, and synthetic resins. When made of a resin, a thermosetting resin or a thermoplastic resin can be used. Examples of the thermosetting resin include bakelite, epoxy resin, urethane resin, and urea resin. Thermoplastic resins are preferred in that long products can be easily molded. For example, polyolefins (polyethylene, polypropylene, poly4-methyl-1-pentene, polybutene, etc.), polyesters (polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, etc.) ), Polyamides (nylon-6, nylon-66, polymeta-xylene adipamide, etc.) and thermoplastic elastomers. Among them, polyethylene, polypropylene, polyethylene terephthalate, and polyamide are particularly preferable because a long product having excellent stretchability and good rigidity can be obtained. Such raw materials can be appropriately selected according to the application, and can be used as a mixture. Even if the mixing is performed between resins, a component derived from a natural material can be mixed in the resin. It is preferable to use a polyethylene such as an ethylene homopolymer or an ethylene-α-olefin copolymer for a bandage for a part such as a finger where strength is not so required. In this case, preferably a density of 0.945 g / cm ³ or more, particularly preferably 0.955~0.970g / cm ^3, more preferably 0.960~0.970g / cm ^3, a gel permeation chromatography (GPC ) Has a molecular weight distribution (weight average molecular weight (Mw) / (Mn)) of 5 to 15, preferably 6 to 14, and an α-olefin having 3 to 6 carbon atoms of less than 2%, preferably 0.05 to 1 0.5% by weight of high density polyethylene is preferred. When it is necessary to firmly fix a portion requiring strength, for example, by fracture, it is preferable to use a material having strength such as polyethylene terephthalate.
[0008]
Further, the long object may be made of a material whose inside and the surface are different from each other. For example, when a thermoplastic resin is applied only to the surface side, it can be melted by heat and adhered to a bandage using an adhesive band. The thermoplastic resin preferably has a melting point of 270 ° C. or less in consideration of the ease of molding and processing.
[0009]
The long object is not limited to one having a circular cross section, but may be an elliptical, triangular, square, pentagonal, hexagonal or other polygonal, or a star-shaped, gear-shaped or other irregular-shaped one. Further, any protrusions may be provided on the thread-like material, for example, those in which fine fibers are formed by branching from thread-like to feather-like or those in which protrusions are provided on the surface of the fiber-like material are provided. There may be. Further, one or more grooves or streaks may be provided in the longitudinal direction. Further, the thickness of the long object may be appropriately selected depending on the application, but usually the cross-sectional area 0.1 to 100 mm ^2, preferably 0.2 to 20 mm ^2. The length is usually from 10 to 600 mm, preferably from 30 to 500 mm.
[0010]
Method of manufacturing long object The long object according to the present invention can be used as it is in the case of a natural material in the form of a fiber or a rod, but it can be cut by a known method such as cutting. It can also be used by processing it into a shaku. If a resin is used, various resins can be once mixed and used as a raw material for a molded article. The molded body is manufactured by various known manufacturing methods, for example, if a thermoplastic resin, a raw yarn having a desired shape is produced from the thermoplastic resin by melt molding, and once cooled, then heated to a temperature lower than the melting point. And can be produced by stretching. The stretching temperature is appropriately selected depending on the resin used, and is usually lower than the melting point of the resin used. The temperature is suitable for stretching to such an extent that plastic deformation and shape retention can be exhibited. For example, when the raw material is polyethylene, the temperature is 100 ° C, preferably 85 to 100 ° C. The stretching ratio is slightly different depending on the properties and stretching temperature of the original yarn, but is selected within a range in which plastic deformation can be expressed, and is usually in a range from a yield point to a breaking point or less, preferably 2 to 30 times, preferably. Is about 7 to 15 times. If the stretching ratio is insufficient, a long product having a return angle of 20 ° or less due to 90 ° bending cannot be obtained, and the shape retention and / or rigidity will not be satisfactory.
[0011]
The long object according to the present invention may contain various additives as long as the object of the present invention is not impaired. Examples of such additives include processing aids, color pigments, antistatic agents, inorganic fillers, and the like. More specifically, low-molecular-weight polyolefins as processing aids, alicyclic polyolefins, synthetic oils having carboxyl groups, hydroxyl groups, etc., mineral oils, waxes composed of vegetable oils such as carnauba wax, titanium oxide, zinc oxide, calcium carbide, Examples include coloring pigments such as barium sulfate and silica, inorganic fillers, and antistatic agents composed of various types of surfactants. These are, for example, 5% by weight or less, preferably 1% by weight or less, if they are waxes or antistatic agents, or 10% by weight or less, preferably 5% by weight if they are coloring pigments or inorganic fillers. % Or less in each case. The addition of waxes is effective for improving the dimensional accuracy in melt forming and drawing of the original yarn, and the addition of coloring pigments and inorganic fillers is effective in improving shape retention and / or rigidity in addition to coloring and bulking effects. May contribute to improvement.
[0012]
The long material according to the present invention may have different materials on the inside and on the surface. In this case, even if the raw yarn obtained by melt-extruding the resin on the inside and on the surface at the same time is stretched, the inside of the long object is first drawn. After melt extrusion and stretching, the surface may be coated or impregnated with another resin.
[0013]
Bandage substrate The material of the bandage substrate according to the present invention may be a material such as cotton, rayon, nylon, or biodegradable fiber which is usually used as a bandage, but is not limited thereto. . The material of the bandage base material can be appropriately selected according to the application, and may be a composite of other fibers. For example, elastic fibers such as polyurethane may be used to give elasticity, or wool fibers may be used to improve water absorption.
[0014]
The shape of the bandage base material according to the present invention may be a generally used band-shaped wound bandage, or may be a cylindrical or conical shape. The method of knitting and weaving the fibers of the bandage and the size of the mesh can be appropriately selected depending on the use. The non-stretchable type is, for example, a flat knit, and the stretchable type is, for example, a net bandage having a special weave.
[0015]
Fixing part The fixing part of the bandage according to the present invention is formed by arranging the long objects in parallel on a bandage base material. Since the long object according to the present invention has shape retention and / or rigidity as described above, a hard portion is formed by arranging it on at least a part of the bandage base material, so that the long object has a shape that fits a portion to be applied. Can be formed. It is also protected from external impact. When using a non-stretchable band-shaped bandage base material, the direction in which long objects are arranged in parallel is preferably arranged in a direction perpendicular to the long direction, and a stretchable bandage base such as a net bandage is used. When a material is used, it is preferable to arrange it in a non-stretchable direction. For example, when a finger is injured and covered with a net bandage, a normal net bandage has low elasticity in the fingertip direction, and therefore, a long object is arranged in parallel in the fingertip direction. As a result, the joint portion is fixed. The fixing strength depends on the shape retention and / or rigidity of the long object, and can be appropriately selected depending on the degree of injury.
[0016]
It is preferable that a plurality of long objects are arranged at a certain interval in the fixing portion. The interval can be appropriately selected according to the application. The interval is narrowed when strongly fixed is desired, and the interval is widened when a certain degree of movement is desired. When it is applied to a small part such as a finger, it is preferably 1 mm to 5 mm. The intervals need not all be equal, and may vary from location to location. Further, the number of the long objects in the fixing portion can be appropriately selected.
[0017]
In the fixing part according to the present invention, the long objects are arranged in parallel. However, in some cases, the cut end may be bent so as to come inside the bandage. By doing so, it is possible to prevent the long object from falling off.
[0018]
Manufacturing method of fixing part The fixing part according to the present invention can be manufactured by arranging the long object in parallel with the bandage base material. The fixing part can be manufactured as follows, but is not limited to this. The long object is cut in advance to a desired length, and inserted into the bandage base material so as to be entangled, sewn with another thread, or bonded with various adhesives to form a fixed portion. When bonding, a general adhesive is used or an adhesive band is used. The adhesive band may be a film or a knitted fabric, but is preferably made of a thermoplastic resin having a melting point of 270 ° C. or less. The adhesive band is melted to some extent by applying heat, and bonds the bandage base material and the long object. The adhesive band may be placed on the bandage substrate and a long object may be placed thereon, or the long band may be placed on the bandage substrate and the adhesive band may be placed thereon.
[0019]
Bandage The bandage of the present invention has a fixing portion in which long objects having at least a shape-retaining property and / or rigidity made of at least a nonmetallic material of a bandage base material are arranged in parallel. For example, in the case of a band-shaped bandage, a plurality of fixing portions can be formed at appropriate intervals for one turn. By adopting such a configuration, it is also possible to cut and use an appropriate length.
[0020]
The bandage of the present invention may be configured so that the user can further add or remove the long object when used. In the case of addition, a long object may be separately prepared and inserted into the bandage base material in a necessary number at the time of use. Conversely, if there are too many long objects, they may be appropriately extracted according to use. In addition, the bandage base material and the long object can be separated, and the user can freely apply the bandage base material. By doing so, the user can appropriately use the fixing portion in accordance with the desired size and fixing strength.
[0021]
【Example】
Hereinafter, one embodiment of the embodiment will be described. However, the present invention is not limited by these embodiments.
The long object used in the examples was formed as follows.
High-density polyethylene containing 1.2% by weight of propylene as a comonomer (comonomer content measured by NMR, MFR 0.35 g / 10 min measured by ASTM D1238, weight average molecular weight measured by gel permeation chromatography (GPC) Mw / Mn calculated from (Mw) and the number average molecular weight (Mn) is 12, and the density measured by ASTM D1505 is 0.958 g / cm ³ ), melt-spun under the following conditions, and stretched in the machine direction. Stretched at 13 times.
Extruder: 30 mmφ (L / D = 28, compression ratio 2.3)
Die opening: 30mm × 3.6mm
Molding temperature (cylinder and die): 290 ° C
Cooling tank: 1400mm
Take-off speed: 4 m / min Stretching tank: 95 ° C water tank (length 1700 mm)
Annealing bath: 140 ° C electric heating oven (2000 mm length)
Winding speed: 52 m / min. The diameter (maximum thickness) of the obtained long object was measured with a caliper, and the return angle θ after bending 90 ° and holding for 5 minutes was measured by the method shown in FIG. . The thickness was 0.68 mm, and the 90-degree bending return angle was 12 degrees.
[0022]
Example 1
Polyethylene having a melting point of 135 ° C. was extruded and coated on the surface of the above-mentioned elongated product, and cut into pieces having a length of 4 cm. Fifteen of these were prepared and placed on the non-stretch bandage substrate made of cotton at 5 mm intervals in the longitudinal direction, and a polyethylene film was placed thereon and heated at 180 ° C. for 2 seconds to bond the film and the bandage substrate. did. This was rolled into a bandage.
The bandage was wrapped around the broken finger. The fixed part of the bandage was wound around the middle finger one or more times, and the bandage base material other than the fixed part was further wrapped and cut off at an appropriate length. The cut end was forked with scissors and tied to a finger. Since long objects can be deformed according to the unevenness of the fingers, they fit the fingers firmly. In addition, the joints were fixed and the fingers were protected against some external impact.
[0023]
Example 2
A tubular elastic net bandage (length in the longitudinal direction: 25 m) having a low elasticity in the longitudinal direction was prepared. Twenty of the above-mentioned long objects were inserted into the net bandage so as to be entangled with the fibers in the direction of low elasticity, that is, in the long direction. This was cut to a length of 20 cm.
I put this over my leg and put it on my injured knee, and shaped it to match the roundness of the knee and the unevenness of my feet. Since the long object having shape retention was contained in the entire net bandage, it could be fixed firmly.
[0024]
【The invention's effect】
Since the bandage of the present invention is made of a non-metallic material, it is not responsive to metal sensitive equipment. In addition, since it has shape retention and / or rigidity, it can be appropriately molded in accordance with the unevenness of the part to be used, and can hold the molded shape, so that it fits the body.
[Brief description of the drawings]
FIG. 1 is a drawing showing a return angle after bending by 90 degrees.

Claims (10)

A bandage comprising at least a part of a bandage base material, and a fixing portion formed by arranging, in parallel with the bandage base material, a long object having a shape retaining property and / or rigidity made of a nonmetallic material. The bandage according to claim 1, wherein the long object having shape retention and / or rigidity made of a nonmetallic material is a resin rod-shaped molded product. The bandage according to claim 2, wherein a main component of the resin rod-shaped molded body is a thermoplastic resin. The bandage according to claim 2, wherein the resin-made rod-shaped body is a resin-made rod-shaped body having a return angle of 30 degrees or less after bending by 90 degrees. Resin rod shaped molded body, the bending strength 0.7 kg / mm ² or more (ASTM D790) of claim 2 wherein the resin rod shaped molded body bandage. The bandage according to claim 1, wherein the surface of the long object is coated with a thermoplastic resin having a melting point of 270 ° C or lower. The bandage according to claim 1, wherein the long object is fixed to the bandage substrate via an adhesive band. The bandage according to claim 1, wherein the bandage substrate is in a band shape, a tubular shape, or a conical shape. The bandage according to claim 1, wherein the bandage substrate is non-stretchable, and a long object is arranged in a direction perpendicular to a longitudinal direction of the bandage substrate. The bandage according to claim 1, wherein the bandage substrate has elasticity, and the long object is arranged in a direction in which the bandage substrate has less elasticity.

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