KR102250407B1 - Medical Radiation Shielding Fiber and medical blood-sucking pad using the same - Google Patents

Abstract

The present invention relates to a medical radiation shielding fiber and a medical blood-sucking pad using the same. More specifically, it relates to a radiation shielding fiber for application to a medical blood absorbing pad that can be used during surgery, and a medical blood absorbing pad using the same.

Description

Medical Radiation Shielding Fiber and medical blood-sucking pad using the same

The present invention relates to a medical radiation shielding fiber and a medical blood-sucking pad using the same. More specifically, it relates to a radiation shielding fiber for application to a medical blood absorbing pad that can be used during surgery, and a medical blood absorbing pad using the same.

The blood-sucking pad is used for the purpose of quickly and easily finding the affected area by sucking up secretions such as blood and pus from the incision area during various surgical procedures including brain surgery or surgery.

The blood-sucking pad is made of a non-woven fabric to have a predetermined thickness, and a thread is heat-adhered to one side to absorb blood and floating substances so that the non-woven fabric is swelled so that the tissue is not disturbed and is curled. In addition, when irradiated with X-rays, a disinfection confirmation strip is put on the surface that turns black to make it possible to visually confirm that the blood-sucking pad is disinfected without opening the wrapping paper, and is wrapped in a transparent film for use. In addition, in some cases, a medical fiber in which the thread and the disinfection check band are integrated is used.

The medical seal and the blood-sucking pad attached with the disinfection check band has the advantage of being able to confirm whether or not the remaining blood-sucking pads that could not be removed around the surgical site after surgery can be confirmed by X-ray imaging. However, the manufacturing method of such a thread and a thread for use as a disinfection check band adopts a wet spinning method, which is generally difficult to process, and a thread based on polyvinyl chloride or polyvinyl alcohol is used. However, such a conventional thread can be attached only when high-temperature bonding is performed on the blood-sucking pad used during brain surgery at a temperature of 150° C. or higher, and when bonding at a high temperature, the breathability of the nonwoven fabric is reduced and the blood-sucking function is deteriorated. In addition, the above-described polyvinyl chloride and polyvinyl alcohol-based yarn has a low adhesive strength to the nonwoven fabric and can be easily separated with a small force, and in this case, its natural effect cannot be expected. In addition, there is a problem in that there is a difficulty in performing the surgery due to the absence of the luminous performance of the thread during a power outage during surgery.

Korean Patent Registration No. 10-1089323 (2011.11.28) describes a method of manufacturing a radiation shielding fabric. The above patent is a method of preparing a radiation shielding coating layer forming composition by mixing a colloidal solution in which barium sulfate fine particles are dispersed in a liquid silicone base rubber, and applying and curing it on at least one side of a fabric to prepare a radiation shielding fabric. It is described. However, when the composition is prepared and applied to one surface of the fabric as described above, since a separate curing process and drying process are required, the manufacturing cost increases, and it may be difficult to achieve sufficient adhesion between the nonwoven fabric and the coating layer. In addition, when applied as a medical product, it may strongly adhere to the surgical site together with the coagulated blood. Therefore, when removing the adhered part, an enormous amount of time and effort is required as much as the operation time. In order to compensate for these shortcomings, it is essential to develop a radiation shielding seal with a small contact area and a medical blood-absorbing pad using the same.

In addition, Korean Patent Registration No. 10-0740139 (2007.07.10) describes a method for producing a radiopaque fiber that is wet-spun to contain barium sulfate inside and outside the chitosan or polyvinyl alcohol fiber. However, since these fibers are manufactured by wet spinning, as described above, the spinning speed is slow, and since post-processes such as washing, dehydration, and drying are required, the process is difficult and productivity may be lowered. In addition, since the adhesion to the nonwoven fabric, which is the base material of the blood absorption pad, is poor, it cannot be used safely because it is easily separated with a small force.

Korean Registered Patent No. 10-1089323 (2011.11.28) Korean Registered Patent No. 10-0740139 (2007.07.10)

An aspect of the present invention is made of a material suitable for the human body so that it can be used for medical purposes, and an object of the present invention is to provide a medical radiation shielding fiber capable of confirming the presence of a blood-absorbing pad by X-ray imaging, and a medical blood-absorbing pad using the same.

In addition, one aspect of the present invention is excellent in adhesion between the substrate constituting the blood absorbing pad and the medical radiation shielding fiber attached to one side of the blood absorbing pad for identification, so it is not easily separated and can be used safely. An object of the present invention is to provide a medical radiation shielding fiber and a medical blood-sucking pad using the same.

In addition, an aspect of the present invention is to provide a medical blood-sucking pad having a light-emitting performance to enable identification of the blood-sucking pad even in the event of a power outage.

Another object of the present invention is to provide a medical radiation shielding fiber having excellent strength and elongation, and a medical blood-absorbing pad using the same.

In order to achieve the above object, the inventors of the present invention use a radiation shielding material that is not harmful to the human body, and more specifically, an X-ray shielding material that is safe for the human body, so that the presence or absence of a blood absorption pad can be checked, and a pigment is used for the naked eye. The study was conducted to make it possible to check the existence of a thread by using it, and to identify the existence of a thread even in the event of a power outage.

As a result, it is a thermoplastic polyurethane elastomer that has excellent elasticity and excellent adhesion to blood-absorbing pad substrates such as non-woven fabrics, a radiation shielding material that allows X-rays to be photographed to confirm the presence, and can emit light even in the dark. The present invention was completed by discovering that the above object can be achieved by blending a photoluminescent pigment to enable identification and a color-developing pigment to provide excellent visibility, and melt-spinning it into a fiber form. In addition, by mixing these components in an appropriate amount, it is possible to stably melt extrusion without causing any trimming, and has excellent strength and elongation, and excellent adhesion to the substrate of the blood-sucking pad, making it suitable for use as a medical blood-sucking pad. The present invention was completed by discovering that it can have.

Specifically, an aspect of the present invention provides a medical radiation shielding fiber obtained by melt-spinning a resin composition including a thermoplastic polyurethane elastomer, a radiation shielding material, and a pigment.

Another aspect of the present invention provides a blood-sucking pad comprising the medical radiation shielding fiber according to the above aspect.

Another aspect of the present invention provides a method of manufacturing a medical radiation shielding fiber comprising the step of melt spinning a resin composition comprising a thermoplastic polyurethane elastomer, a radiation shielding material, and a pigment.

Another aspect of the present invention is a method of manufacturing a blood absorbing pad comprising the step of laminating the radiation shielding fiber according to the above aspect on one side of a substrate and then heat-compressing at 90 to 150° C. at 100 to 500 kgf/cm 2. Provides.

The radiation shielding fiber according to an aspect of the present invention has excellent visibility to the extent that it can be identified with the naked eye, can be identified even in the event of a power outage, and is suitable for medical use by including a pigment that is not harmful to the human body.

In addition, by using a thermoplastic polyurethane elastomer, a radiation shielding material, and a pigment at an appropriate magnification, it has excellent strength and elongation and can be applied to a continuous production process, further improving the productivity of the blood absorbing pad. Since it has excellent adhesion to a substrate such as a non-woven fabric used, it is not easily separated, so that it can be used safely.

In addition, the blood-sucking pad according to an aspect of the present invention has excellent visibility, excellent strength and elongation, and excellent visibility during surgical operation by using a radiation shielding fiber having excellent adhesion to a substrate as a confirmation band, and X- It is possible to check the presence or absence of a blood-sucking pad that could not be removed by a line, and it is possible to identify even in the event of a power outage, so there is an effect that can be usefully used for medical purposes such as surgery.

In addition, the blood-sucking pad of the present invention can be manufactured by a simple method by integrating the substrate and the radiation shielding fiber by a heat-pressing method and has an effect that can be continuously produced.

1 is a photograph of a medical radiation shielding fiber according to an aspect of the present invention.
2 is a photograph of a blood absorption pad to which a medical radiation shielding fiber is heated and compressed according to an aspect of the present invention.

Hereinafter, the present invention will be described in more detail through specific examples or examples including the accompanying drawings. However, the following specific examples or examples are only one reference for describing the present invention in detail, and the present invention is not limited thereto, and may be implemented in various forms.

In addition, unless otherwise defined, all technical and scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. The terms used in the description in the present invention are merely for effectively describing specific embodiments and are not intended to limit the present invention.

In addition, the singular form used in the specification and the appended claims may be intended to include the plural form unless otherwise indicated in the context.

One aspect of the present invention is a medical radiation shielding fiber obtained by melt spinning a resin composition comprising a thermoplastic polyurethane elastomer, a radiation shielding material, and a pigment.

In one aspect, the radiation shielding material may be barium sulfate, but is not limited thereto, but the use of barium sulfate is not harmful to the human body, so it is suitable for medical use.

In one aspect, the pigment may be any one or a mixture of two or more selected from the group consisting of color-developing pigments and phosphorescent pigments, but is not limited thereto. Can be expressed.

In one aspect, the color developing pigment may be a phthalocyanine-based pigment, and the like, and the photoluminescent pigment may be one using a pigment including _{Al 2} O ₃ , SrO ₃ and B ₂ O _3.

In one aspect, the photoluminescent pigment may have an average particle diameter of 20 to 60 μm.

In one aspect, the coloring pigment may be included in an amount of 0.01 to 5 parts by weight, based on 100 parts by weight of the thermoplastic polyurethane elastomer, and the phosphorescent pigment may be included in an amount of 1 to 30 parts by weight, based on 100 parts by weight of the thermoplastic polyurethane elastomer. .

In one aspect, the resin composition may include 1 to 30 parts by weight of a radiation shielding material based on 100 parts by weight of a thermoplastic polyurethane elastomer, the pigment is a color developing pigment, and the resin composition is 100 parts by weight of a thermoplastic polyurethane elastomer. With respect to the part, it may be one containing 0.01 to 5 parts by weight of the coloring pigment.

In one aspect, the resin composition may include 1 to 30 parts by weight of a radiation shielding material, based on 100 parts by weight of a thermoplastic polyurethane elastomer, the pigment is a phosphorescent pigment, and the resin composition is 100 parts by weight of a thermoplastic polyurethane elastomer. With respect to parts, it may be to include 1 to 30 parts by weight of the phosphorescent pigment.

In one aspect, the fiber may be made of mono or multi-filament.

In one aspect, the fiber may have a light emitting property at a wavelength of 400 ~ 600 nm.

In one aspect, the fiber may have a diameter of 0.1 to 10 mm.

In one aspect, the fiber may have a strength of 1 to 5 g/d and an elongation of 50 to 300% according to KS K 0412.

Another aspect of the present invention is a blood absorbing pad comprising the medical radiation shielding fiber of the above aspect.

In one aspect, the blood absorbing pad may be integrated by heating and pressing the radiation shielding fiber to one surface of a substrate.

In one aspect, the substrate may be any one or more selected from cotton, film, fabric, knitted fabric, and nonwoven fabric, but is not limited thereto.

In one aspect, the adhesive strength between the substrate and the radiation shielding fiber may be 5 to 10 N in the longitudinal direction of the fiber.

Another aspect of the present invention is a method of manufacturing a medical radiation shielding fiber comprising the step of melt spinning a resin composition comprising a thermoplastic polyurethane elastomer, a radiation shielding material, and a pigment.

In one aspect, a) preparing a first masterbatch obtained by melt-kneading a thermoplastic polyurethane elastomer and a radiation shielding material and a second masterbatch obtained by melt-kneading a thermoplastic polyurethane elastomer and a pigment; And

b) mixing the thermoplastic polyurethane elastomer with the first master batch and the second master batch, and then melt spinning;

It may be to include.

In one aspect, the radiation shielding material may be barium sulfate, but is not limited thereto, but the use of barium sulfate is not harmful to the human body, so it is suitable for medical use.

In one aspect, the pigment may be any one or a mixture of two or more selected from the group consisting of color-developing pigments and phosphorescent pigments, but is not limited thereto. Can be expressed.

In one aspect, the spinning may be performed at a spinning temperature of 150 to 250° C. at a winding speed of 100 to 200 m/min, but is not limited thereto.

Another aspect of the present invention is a method of manufacturing a blood absorbing pad comprising the step of laminating the radiation shielding fiber according to the above aspect on one side of a substrate and then heat-compressing at 90 to 150° C. at 100 to 500 kgf/cm 2. to be.

In one aspect, while continuously stacking the radiation shielding fibers on one surface of the substrate to be continuously transferred, it may be integrated by heat-compressing using a heat-compressing means.

Hereinafter, each configuration of the present invention will be described in more detail.

The conventional fiber manufactured through wet spinning has a problem in that the manufacturing process is complicated, the strength and elongation of the manufactured fiber are weak, and the adhesion to the adsorption pad is weak, and thus it is easily separated. In addition, there is a problem that it cannot be used in a dark room because it does not have a photoluminescent property, so it is limited in its use as a medical fiber. The inventors of the present invention have completed the present invention as a result of research in order to solve the problems of the conventional medical fiber.

In other words, the manufacturing process is simple, continuous production is possible, and human-friendly materials are used to suitably be used for medical purposes, and a fiber having excellent X-ray shielding properties, elasticity, and luminescence properties was manufactured to seek to solve the problem. .

The first aspect of the medical radiation shielding fiber of the present invention is a melt-spun resin composition comprising a thermoplastic polyurethane elastomer, a radiation shielding material, and a color developing pigment.

A second aspect of the medical radiation shielding fiber of the present invention is a melt-spun resin composition comprising a thermoplastic polyurethane elastomer, a radiation shielding material, and a photoluminescent pigment.

A third aspect of the medical radiation shielding fiber of the present invention is a melt-spun resin composition comprising a thermoplastic polyurethane elastomer, a radiation shielding material, a color developing pigment, and a photoluminescent pigment.

The first to third aspects are only for describing the present invention in more detail, but are not limited thereto.

In one aspect of the present invention, the medical radiation shielding fiber is excellent in elasticity by using a thermoplastic polyurethane elastomer, has excellent strength and elongation, has excellent adhesion to a nonwoven fabric used as a substrate for an adsorption pad, and is melt-spun. Manufacturing is possible, so that the manufacturing process is simple and continuous production is possible.

Since the thermoplastic polyurethane elastomer can produce fibers by melt spinning, it does not use a solvent, and because the spinning method is simple, productivity can be further improved. In addition, since it is possible to adhere to a base material such as a nonwoven fabric at a relatively low temperature, there is an advantage that adhesion is possible without deteriorating the physical properties of the nonwoven fabric used as a base material.

Such a thermoplastic polyurethane elastomer may be used without limitation as long as it is commonly used in the relevant field. ^{For example, commercialized SONGSTOMER TM} series of Songwon Industrial Co., Ltd. can be used. Specifically, for example, SONGSTOMER ^TM P-3285A, P-7185A, or the like may be used, but is not limited thereto.

The radiation shielding material is used to confirm by irradiating X-rays whether or not there is a blood-sucking pad that could not be removed around the surgical site after surgical operation. In general, any radiation shielding material used in the field may be used without limitation, but it is preferable to use barium sulfate which is harmless to the human body and has excellent compatibility with thermoplastic polyurethane elastomers and pigments. The content of the radiation shielding material may be 1 to 30 parts by weight of the radiation shielding material, and more specifically 10 to 20 parts by weight, based on 100 parts by weight of the thermoplastic polyurethane elastomer. In the above range, threading does not occur during fiber production, and the fiber can be melt-spun stably, and it is preferable because it has excellent miscibility with a pigment.

The pigment may be any one or a mixture of two or more selected from the group consisting of coloring pigments and photoluminescent pigments.

The color developing pigment is used to visually check the presence or absence of the radiation shielding fiber, and may be used without limitation as long as it is a color developing pigment commonly used in the medical fiber field. Specifically, for example, a phthalocyanine-based blue pigment having excellent visibility may be used, but is not limited thereto. The coloring pigment may be used in an amount of 0.01 to 5 parts by weight, and more specifically 0.5 to 1 part by weight, based on 100 parts by weight of the thermoplastic polyurethane elastomer. In the above range, fibers can be stably melt-spun, and fibers having strength and elongation suitable for use as medical fibers can be prepared.

The phosphorescent pigment refers to a pigment having a property of absorbing and accumulating light from almost all light sources such as sunlight, fluorescent lamps, incandescent lamps, etc., and then gradually emitting and emitting light in a dark place. By using such a photoluminescent pigment, even when a power outage occurs during surgery, it can be checked with the naked eye. If it is a photoluminescent pigment that is commonly used, it can be used without limitation, but more preferably it is harmless to the human body, has excellent photoluminescence properties at high and low temperatures, has excellent compatibility with radiation shielding materials and thermoplastic polyurethane elastomers, and has excellent strength and elongation. From the viewpoint of producing excellent fibers, a phosphorescent pigment having a green or blue emission spectrum containing _{Al 2} O ₃ , SrO ₃ and B ₂ O _{3 as main components may be used.} Specifically, it is good to use a photoluminescent pigment that can exhibit light-emitting characteristics at a wavelength of 400 to 600 nm because it can exhibit a photoluminescent function in an operating room such as a dark room. The use of the phosphorescent pigment having an average particle diameter of 20 to 60 µm is preferable, but is not limited thereto, since it has excellent spinnability and can produce a fiber having a smooth surface. Specifically, commercially available examples include Uksung Chemical's PANAX LUMINO Green, PANAX LUMINO Blue, and the like, and may be used alone or in combination, but are not limited thereto.

The content of the phosphorescent pigment may be 1 to 30 parts by weight, more preferably 10 to 20 parts by weight, based on 100 parts by weight of the thermoplastic polyurethane elastomer. In the above range, fibers can be stably melt-spun, and fibers having strength and elongation suitable for use as medical fibers can be prepared.

In one aspect of the present invention, the resin composition for manufacturing the fiber may further include a thickener, a processing lubricant, and the like, from the viewpoint of further facilitating processability when manufacturing the fiber by melt extrusion.

The thickener may be used without limitation as long as it is commonly used in the relevant field, and specifically, inorganic particles such as silica, talc, and calcium carbonate may be used, but are not limited thereto.

In one aspect of the present invention, the medical radiation shielding fiber may have a light emission characteristic at a wavelength of 400 to 600 nm. In the above range, it is good to absorb and emit light such as fluorescent lamps and natural light.

In addition, the fiber may have a diameter of 0.1 to 10 mm, more specifically 1 to 8 mm, but is not limited thereto. In the above range, strength and elongation are excellent, and fibers having excellent visibility can be produced, so it is preferable.

The fiber may have a strength of 1 to 5 g/d, more specifically 2 to 4 g/d, and an elongation of 50 to 300%, more specifically 100 to 250% according to KS K 0412. The elasticity and strength of the fibers presented in the above range show higher elasticity and strength than conventional medical fibers, and are suitable for use as medical fibers and adsorption pad fibers, but are not limited thereto.

), 누에꼬치형(

) 및 편심형(

) 등인 것일 수 있으나 이에 제한되는 것은 아니다.The fibers may be made of mono or multifilaments. The cross section of the monofilament or multifilament may be manufactured in various shapes such as a circle, an oval shape, a dumbbell shape, a semicircle shape, a fan shape, a chevron shape, and a polygon shape. The polygon may include a triangle, a square, a pentagon, a hexagon, a star, a cross, and a rhombus, but is not limited thereto. In addition, if necessary, it may be a filament having a deformed cross section. The shape of the deformed cross-section is not limited, but may be selected from a triangle, a square, a pentagon, a hexagon, a star, and the like, but is not limited thereto. In addition, the monofilament may be made of two or more resin compositions having a core/sheath structure or a side by side cross-section, but is not limited thereto. In one aspect of the present invention, the side-by-side shape is specifically, for example, a half moon shape (

), silkworm skewer type (

) And eccentric (

), etc., but is not limited thereto.

In one aspect of the present invention, a method of manufacturing a fiber will be described in more detail.

One aspect of the method for manufacturing a medical radiation shielding fiber of the present invention includes the step of melt spinning a resin composition comprising a thermoplastic polyurethane elastomer, a radiation shielding material, and a pigment.

More specifically, a) preparing a first masterbatch obtained by melt-kneading a thermoplastic polyurethane elastomer and a radiation shielding material and a second masterbatch obtained by melt-kneading a thermoplastic polyurethane elastomer and a pigment; And

b) mixing the thermoplastic polyurethane elastomer with the first master batch and the second master batch, and then melt spinning;

It may be to include.

In the step a), the master batch may be manufactured into pellets or chips by melt-extruding a thermoplastic polyurethane elastomer and a radiation shielding material or pigment using a conventional extruder or compounding machine. By preparing the master batch in this way, it is possible to further improve the miscibility of the resin and the radiation shielding material or pigment, and to disperse it evenly, and the surface is smooth, less thread trimming occurs, and deterioration due to high-temperature kneading is prevented. It is desirable because it can be done. However, the process of manufacturing the master batch may be omitted if necessary.

In addition, the second masterbatch may be more specifically prepared and used separately, a masterbatch obtained by mixing a thermoplastic polyurethane elastomer and a coloring pigment, and a masterbatch obtained by mixing a thermoplastic polyurethane elastomer and a phosphorescent pigment.

In the step b), the melt-spinning may be performed by melt-extruding the components and then extrusion-spinning using a nozzle. Specifically, the thermoplastic polyurethane elastomer and the first master batch and the second master batch are introduced into the extruder. At this time, the mixing ratio of the components may be added by calculating the input amount of the master batch so that the content of the radiation shielding material and the pigment in the entire fiber is appropriately introduced. Thereafter, the fibers are manufactured by melt spinning with monofilament or multifilament through a nozzle at the rear end of the extruder. Specifically, for example, spinning at an appropriate spinning rate at a temperature near the melting point of the thermoplastic polyurethane elastomer, and performing stretching at an appropriate temperature near the glass transition temperature of the thermoplastic polyurethane elastomer, or omitting the stretching process. Can be. More specifically, for example, a spinning temperature of 150 ~ 250 ℃, more specifically 180 ~ 200 ℃ by performing a winding speed of 100 ~ 200 m / min, the fiber can be stably manufactured, but is not limited thereto.

Various types of extruders such as a twin screw extruder may be used as the extruder, but the present invention is not limited thereto.

In the melt spinning, the melt-extruded melt is weighed in a spin pack having a die plate, and then extruded through a nozzle of the die plate, thereby generating yarns of various shapes and sizes.

Here, the cross-sectional shape of the yarn is determined by the shape of the nozzle of the die plate, and may be manufactured by monofilament or multifilament, and the shape is not limited as long as it is manufactured according to a conventional fiber manufacturing method. The multifilament may form one or more core portions and a sheath portion surrounding the core portion.

The cross section of the fiber may have a polygonal shape including a circular shape or a square shape, a triangle shape, a pentagon shape, and a star shape. In this case, the yarn may have a single spinning structure, or may be formed in a core/sheath double spinning structure, or a side-by-side double spinning structure.

In the case of the core-sheath dual-spinning structure, the filament may have a core portion and a sheath portion made of a different material and is spun to surround the outside of the core portion. The core and sheath can also be manufactured in various forms. For example, the core portion having a cross-sectional structure of a polygonal shape including a circle or square, triangle, pentagon, etc. becomes the main main axis, and a circle or square, triangle, pentagon around the core The sheath portion having a polygonal cross-sectional structure including the back may be formed in a shape.

),누에꼬치형(

)및 편심형(

)등인 것일 수 있으나 이에 제한되는 것은 아니다.The side-by-side shape is specifically, for example, a half-moon shape (

), silkworm skewer type (

) And eccentric type (

), etc., but is not limited thereto.

The radiation shielding fiber according to an aspect of the present invention is suitable for use in medical use, and more specifically, it can be easily used to enable identification by heating and pressing on a medical blood-sucking pad. 1 shows a photograph of a radiation shielding fiber according to an aspect of the present invention. As shown in the photo on the right of FIG. 1, it was confirmed that the luminescent pigment was exhibited in a dark place.

In one aspect of the present invention, the blood absorption pad may be integrated by heating and pressing the radiation shielding fiber on one surface of a substrate. The radiation shielding fibers heated and compressed on one side in this way can be identified by X-ray irradiation or the naked eye, and as they absorb suspended substances such as blood, even if the substrate swells, the tissue is not disturbed and can play a role of curling. have. In addition, in order to perform such a role, the radiation shielding fiber must be well adhered to the substrate, and more specifically, the adhesive strength may be 5 N or more in the length direction of the fiber, and more specifically 5 to 10 N.

The substrate may be used without limitation as long as it can function to absorb secretions such as blood or pus during a surgical operation. Specifically, for example, the substrate may be any one or more selected from cotton, film, fabric, knitted fabric, and nonwoven fabric, but is not limited thereto. More specifically, a nonwoven fabric made of pure cotton, viscose, polyamide, etc. may be immersed in acetate, glue, vinyl acetate, etc., compressed and dried, and then cut to a certain size.

The blood absorbing pad is heat-compressed at 90 to 150° C., more specifically 100 to 130° C., 100 to 500 kgf/cm 2, more specifically 200 to 400 kgf/cm 2 after laminating the radiation shielding fiber on one side of the substrate. It can be manufactured including the step of integrating. It is obvious that in the above temperature and pressure range, the substrate and the fibers of the blood absorbing pad can be completely bonded and integrated, and the temperature and pressure conditions may be changed according to the type of the substrate. In addition, by heat-compressing in the above range, it is possible to provide a fiber having an adhesive strength between the substrate and the radiation shielding fiber of 5 N or more, more specifically 5 to 10 N in the longitudinal direction of the fiber.

In addition, the blood-sucking pad of the present invention can be manufactured by a continuous process. Specifically, radiation shielding fibers that are continuously provided by being wound on a bobbin or the like are put on one side of the substrate to be continuously transferred, and then heat-compressed using a heat-pressing means such as a heat-pressing roller to be integrated. Subsequently, it may be to continuously manufacture a medical blood-sucking pad by cutting it into a certain size and then packaging it. A photograph of a blood-sucking pad according to an embodiment of the present invention is shown in FIG. 2. As shown in FIG. 2, the fibers may be positioned in a straight line at the central portion of the blood-absorbing pad, but are not limited thereto and may be integrated in various forms.

Hereinafter, the present invention will be described in more detail based on Examples and Comparative Examples. However, the following Examples and Comparative Examples are only one example for describing the present invention in more detail, and the present invention is not limited by the following Examples and Comparative Examples.

The following physical properties were evaluated as follows.

1) Adhesion strength of nonwoven fabric and fiber

After placing the fibers prepared in Examples and Comparative Examples on a nonwoven fabric made of cotton as shown in FIG. 2, heat-compressing using a hot press at 120°C for 1 minute at a pressure of 300 kgf/cm2 is used to incorporate the fibers into a blood-absorbing pad. Was prepared.

The adhesive strength represents the frictional force applied to peel off the adhesive portion between the fiber and the nonwoven fabric, and represents the average load per unit thickness of the specimen separated by peeling at least 127 mm from the first peeling start. It is the adhesive strength of the fiber in the longitudinal direction, and the unit is N.

2) Fiber strength and elongation

The tensile elongation properties of fibers of the same thickness (2700 denier) prepared in Examples and Comparative Examples were evaluated.

According to the KS K 0412 method, strength and elongation were measured 10 times per sample using a sinusoidal tester of Instron under the conditions of a sample length of 250 mm and a tensile speed of 300 mm/min, and then evaluated as an average value.

3) Radiation shielding test

Place the manufactured fiber on an unirradiated X-ray plate, cover it with aluminum foil (4 mm, 1 sheet), and then use an X-ray generator (HUM-20BT, POSKOM) under the conditions of a tube voltage of 65 to 70 kVp, a time of 10 mAs, and a distance of 76.2 to 127 cm. ) Was used to irradiate and evaluate X-rays.

As a result of the radiation shielding test of the fibers prepared in the examples, it was confirmed that they showed shielding properties to radiation irradiation.

4) Evaluation of optical properties

The prepared fibers were stored in a dark room, exposed to natural light for 1 hour, and then measured in the dark for 10 seconds using a spectrometer (QEPRO, Ocean Optics) to evaluate the luminescence properties of the prepared fibers.

As a result of evaluating the optical properties of the fibers prepared in Examples, it was confirmed that light having a wavelength of about 490 nm was emitted in a dark room.

[Example 1]

For 100 parts by weight of a thermoplastic polyurethane resin (TPU, P-3285A, Songwon Industries), 10 parts by weight of barium sulfate and 0.1 parts by weight of phthalocyanine-based blue pigment (PANAX BLUE BSR) were mixed using a ball mill equipment. . After mixing the ball mill, it was put into a twin screw compounder (Wrarner & Pfleiderer, Type ZSK 25) and melt-extruded to prepare a masterbatch chip. Thereafter, the master batch chip was put into a twin screw extruder (HAAKE Polylab RheoDrive 7, Thermo Scientific) equipped with a single spinneret with a diameter of 4 mm, and melted at a spinning temperature of 190° C. with a screw speed of 15 rpm and a winding speed of 150 m/min. By spinning, a thermoplastic polyurethane monofilament fiber containing a blue pigment was prepared.

The physical properties of the prepared fibers were measured and shown in Table 1 below.

[Examples 2 to 7]

Thermoplastic polyurethane monofilament fibers were prepared in the same manner as in Example 1, except that the contents of barium sulfate and blue pigment were changed as shown in Table 1 below.

The physical properties of the prepared fibers were measured and shown in Table 1 below.

[Example 8]

Per 100 parts by weight of thermoplastic polyurethane resin (TPU, P-3285A, Songwon Industries), 10 parts by weight of barium sulfate and 5 parts by weight of phosphorescent pigment (Wooksung Chemical, PANAX LUMINO Blue, Al ₂ O ₃ , B ₂ O ₃ , SrO ₃ is included, average particle diameter; 30 μm) was mixed using a ball mill equipment. After mixing the ball mill, it was put into a twin screw compounder (Wrarner & Pfleiderer, Type ZSK 25) and melt-extruded to prepare a masterbatch chip. Thereafter, the master batch chip was inserted into a twin-screw extruder (HAAKE Polylab RheoDrive 7, Thermo Scientific) equipped with a single spinneret with a diameter of 4 mm, and a screw speed of 15 rpm and a winding speed of 150 m/min at a spinning temperature of 190 °C. By melt spinning to prepare a thermoplastic polyurethane monofilament fiber containing a blue pigment.

The physical properties of the prepared fibers were measured and shown in Table 1 below.

[Examples 9 to 13]

A thermoplastic polyurethane monofilament fiber was prepared in the same manner as in Example 8, except that the contents of barium sulfate and photoluminescent pigment were changed as shown in Table 1 below.

The physical properties of the prepared fibers were measured and shown in Table 1 below.

[Example 14]

Based on 100 parts by weight of thermoplastic polyurethane resin (TPU, P-3285A, Songwon Industries), 10 parts by weight of barium sulfate, 0.5 parts by weight of phthalocyanine blue pigment (PANAX BLUE BSR) and 10 parts by weight of phosphorescent pigment (Wooksung Chemistry, PANAX LUMINO Blue, Al ₂ O ₃ , B ₂ O ₃ , SrO ₃ included, average particle diameter; 30 μm) were mixed using a ball mill equipment. After mixing the ball mill, it was put into a twin screw compounder (Wrarner & Pfleiderer, Type ZSK 25) and melt-extruded to prepare a masterbatch chip. Thereafter, the master batch chip was put into a twin screw extruder (HAAKE Polylab RheoDrive 7, Thermo Scientific) equipped with a single spinneret with a diameter of 4 mm, and melted at a spinning temperature of 190° C. with a screw speed of 15 rpm and a winding speed of 150 m/min. By spinning, a thermoplastic polyurethane monofilament fiber containing a blue pigment was prepared.

The physical properties of the prepared fibers were measured and shown in Table 1 below.

[Comparative Example 1] Preparation of Thermoplastic Polyurethane Fiber

Thermoplastic polyurethane (TPU, P-3285A, Songwon Industries) 100 parts by weight of resin wound in a twin-screw extruder (HAAKE Polylab RheoDrive 7, Thermo Scientific) equipped with a single spinneret (HAAKE Polylab RheoDrive 7, Thermo Scientific) with a diameter of 4 mm at a spinning temperature of 190 ℃ and a screw speed of 15 rpm. A thermoplastic polyurethane monofilament fiber was prepared by melt spinning at a speed of 150 m/min.

The physical properties of the prepared fibers were measured and shown in Table 1 below.

[Comparative Example 2]

In order to compare the adhesive strength, an adsorption pad in which polyvinyl chloride fibers manufactured by wet spinning and non-woven cotton fabrics were integrated was used. The adhesive strength was measured and shown in Table 1 below.

[Comparative Example 3]

In order to compare the adhesive strength, an adsorption pad in which a polypropylene/polyester synthetic fiber manufactured by wet spinning and a cellulose nonwoven fabric were integrated was used. The adhesive strength was measured and shown in Table 1 below.

[Comparative Example 4]

In order to compare the adhesive strength, an adsorption pad in which polyvinyl alcohol fibers manufactured by wet spinning and non-woven cotton fabrics were integrated was used. The adhesive strength was measured and shown in Table 1 below.

TPU Sulfuric acid
barium Pigment Adhesion strength (length
Direction, N) Strength (g/d) Shinto
(%) blue
Pigment Phosphorescence
Pigment Example 1 100 10 0.5 - 7.70 2.34 123.60 Example 2 100 20 0.5 - 7.53 2.24 121.01 Example 3 100 30 0.5 - 7.45 2.21 120.56 Example 4 100 40 0.5 - Truncation Example 5 100 10 One - 7.65 2.31 123.23 Example 6 100 10 5 - 5.23 2.02 110.16 Example 7 100 10 7 - 3.12 1.20 85.40 Example 8 100 10 - 5 6.90 2.30 120.56 Example 9 100 10 - 10 5.80 2.19 105.23 Example 10 100 15 - 10 5.54 2.10 111.72 Example 11 100 20 - 10 5.21 2.02 106.26 Example 12 100 10 - 30 5.05 1.85 100.31 Example 13 100 10 - 40 2.56 1.05 82.60 Example 14 100 10 0.5 10 5.75 2.15 102.56 Comparative Example 1 100 - - - 8.17 2.71 140.51 Comparative Example 2 PVC fiber/cotton nonwoven 4.85 - - Comparative Example 3 Polypropylene/polyester fiber/cellulose nonwoven fabric 2.09 - - Comparative Example 4 PVA fiber/cotton nonwoven 3.7 - -

As shown in Table 1, it was confirmed that the fibers prepared in Examples 1 to 14 were superior to the adhesive strength presented in Comparative Examples 2 to 4. In addition, as the content of barium sulfate and pigment increased, physical properties such as strength and elongation showed a tendency to decrease, but per 100 parts by weight of the polyurethane elastomer, barium sulfate, a radiation shielding material, was used in an amount of 1 to 30 parts by weight. It was confirmed that it has a sufficiently effective value for use as medical fibers and yarns in a range including 0.01 to 5 parts by weight of a blue pigment and 1 to 30 parts by weight of a photoluminescent pigment.

Specifically, the fiber satisfies all physical properties in which the strength according to KS K 0412 is 1 to 5 g/d, the elongation is 50 to 300%, and the adhesive strength with the cotton nonwoven fabric is 5 to 10 N in the longitudinal direction of the fiber. Thus, it was confirmed that medical fibers and fibers for adsorption pads can be suitably used.

If the adhesive strength, strength, and elongation of the fiber are not satisfied with the above properties, it can be easily separated even when the user unpacks the packaging or applies a small force during use when applied to the blood-absorbing pad. It may be difficult to properly express the function of the fibers attached to the blood-sucking pad due to the inability to withstand the force.

As described above, in the present invention, it has been described by specific matters and limited embodiments and drawings, but this is only provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments, and the present invention is Anyone of ordinary skill in the field to which it belongs can make various modifications and variations from these descriptions.

Therefore, the spirit of the present invention is limited to the described embodiments and should not be defined, and all things having equivalent or equivalent modifications to the claims as well as the claims to be described later belong to the scope of the inventive concept.

Claims (23)

As a medical radiation shielding fiber obtained by melt spinning a resin composition containing a thermoplastic polyurethane elastomer, a radiation shielding material and a pigment,
The pigment includes a photoluminescent pigment,
The fiber is a medical radiation shielding fiber having a light emitting property at a wavelength of 400 ~ 600 nm. The method of claim 1,
The radiation shielding material is a medical radiation shielding fiber of barium sulfate. The method of claim 1,
The pigment is a medical radiation shielding fiber further comprising a coloring pigment. The method of claim 1,
The photoluminescent pigment is a medical radiation shielding fiber that is a pigment containing _{Al 2} O ₃ , SrO ₃ and B ₂ O _3. The method of claim 1,
The photoluminescent pigment is a medical radiation shielding fiber having an average particle diameter of 20 to 60 µm. The method of claim 1,
The photoluminescent pigment is a medical radiation shielding fiber containing 1 to 30 parts by weight, based on 100 parts by weight of the thermoplastic polyurethane elastomer. The method of claim 1,
The resin composition is a medical radiation shielding fiber comprising 1 to 30 parts by weight of a radiation shielding material based on 100 parts by weight of a thermoplastic polyurethane elastomer. The method of claim 3,
The resin composition is a medical radiation shielding fiber comprising 0.01 to 5 parts by weight of the coloring pigment based on 100 parts by weight of the thermoplastic polyurethane elastomer. The method of claim 7,
The resin composition is a medical radiation shielding fiber comprising 1 to 30 parts by weight of the photoluminescent pigment based on 100 parts by weight of the thermoplastic polyurethane elastomer. The method of claim 1,
The fiber is a medical radiation shielding fiber made of mono or multi-filament. delete The method of claim 1,
The fiber is a medical radiation shielding fiber that has a strength of 1 to 5 g/d and an elongation of 50 to 300% according to KS K 0412. A blood absorbing pad comprising a medical radiation shielding fiber according to any one of claims 1 to 10 and 12. The method of claim 13,
The blood-absorbing pad is a blood-absorbing pad in which the radiation shielding fiber is heat-pressed and integrated on one surface of a substrate. The method of claim 14,
The substrate is any one or more selected from cotton, film, woven fabric, knitted and non-woven fabric, blood-sucking pad. The method of claim 14,
The blood absorption pad that the adhesive strength between the substrate and the radiation shielding fiber is 5 to 10 N in the longitudinal direction of the fiber. Melt-spinning a resin composition comprising a thermoplastic polyurethane elastomer, a radiation shielding material, and a pigment,
The pigment contains a photoluminescent pigment,
A method of manufacturing a medical radiation shielding fiber having luminescence properties at a wavelength of 400 ~ 600 nm. The method of claim 17,
a) preparing a first masterbatch obtained by melt-kneading a thermoplastic polyurethane elastomer and a radiation shielding material and a second masterbatch obtained by melt-kneading a thermoplastic polyurethane elastomer and a pigment; And
b) mixing the thermoplastic polyurethane elastomer with the first master batch and the second master batch, and then melt spinning;
A method of manufacturing a medical radiation shielding fiber comprising a. The method of claim 18,
The radiation shielding material is a method of manufacturing a medical radiation shielding fiber of barium sulfate. The method of claim 18,
The pigment is a method of manufacturing a medical radiation shielding fiber further comprising a coloring pigment. The method of claim 19,
The spinning is a method of manufacturing a medical radiation shielding fiber that is performed at a spinning speed of 100 to 200 m/min at a spinning temperature of 150 to 250°C. Including the step of laminating the radiation shielding fiber of any one of claims 1 to 10 and 12 on one side of a substrate and then heat-compressing at 90 to 150 °C at 100 to 500 kgf/cm 2 to integrate. Method of manufacturing a blood-sucking pad. The method of claim 22,
A method of manufacturing a blood-absorbing pad, wherein the radiation shielding fibers are continuously stacked on one surface of the substrate to be continuously conveyed and integrated by heat-compressing using a heat-compressing means.

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