JP2007167403A - Hygienic goods and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide wound and laminated hygienic goods capable of shortening a time for stopping the bleeding by enlarging a contact area of a hemostasis surface to a wound of a human body, softening its touch to the wound and facilitating the fixing. <P>SOLUTION: This hygienic good is a wound and laminated material 1 using at least one type or more nonwoven fabrics including cellulose fibers, the porosity of the laminated material is 50-97%, the liquid absorbing magnification is 1-13 times, and at least a part of the side face of the laminated material has a flat part 2. After the nonwoven fabric including the cellulose fiber and thermoplastic resin fiber is wound around a core wire into a columnar shape, the winding end of the columnar material from which the core wire is removed, is pierced with a needle-shape material heated to the melting point or more of the thermosetting resin fiber or press-fitted with a projecting material, and the wound columnar-shape material obtained by partial thermal bonding is pressurized to form the flat shape part at least in one part of the side face of the laminated material. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a sanitary material and a method for producing the sanitary material, and more particularly to a wound laminated sanitary material for abutting against a puncture wound by an injection needle such as injection and blood collection, and other wounds of the human body and a method for producing the same.

Conventionally, in medical practice such as injection, blood transfusion, blood collection, etc., a hemostatic patch having a pad member has been proposed as a method for suppressing bleeding from a puncture wound that occurs after a needle or blood collection needle is inserted into a blood vessel. Yes. However, since this pad member has a laminated structure and a cushioning structure, when the pad member is pressed against the affected area and used as a hemostatic material, sufficient pressure is not applied to the affected area, and time is required for hemostasis. There was a problem that it took. In order to solve this problem, Patent Document 1 and Patent Document 2 disclose that a non-woven fabric wound core wire is used as a hemostatic surface, and the hemostatic member is compressed and deformed without using a wound core wire. A cylindrical object has been proposed as one that can be compressed with a high pressure. However, the problem is that it is difficult to hit or fix wounds due to the pressure on the columnar side and the columnar cut surface, and it takes time and effort to stop hemostasis. It has not been.
JP 2003-204992 A JP 2005-034453 A

 An object of the present invention is to provide a wound laminated sanitary material that can reduce the hemostasis time by increasing the contact area of the hemostasis surface of the hemostasis body and increasing the ease of contact with and fixing the wound. That is.

In order to solve the above problems, the present inventor improves the handleability as a hemostatic body and the stability of fixation to the hemostatic portion by providing a flat portion on a part of the side surface of the cylindrical wound laminate. The present invention has been found. That is, the present invention is as follows.
(1) A wound laminate using at least one kind of nonwoven fabric containing cellulose fibers, wherein the laminate has a porosity of 50 to 97% and a liquid absorption ratio of 1 to 13 times. A sanitary material characterized in that a flat part is provided on at least a part of a side part of an object.
(2) The sanitary material according to (1), wherein the outer layer of the flat portion is a nonwoven fabric containing cellulose fibers, and the cellulose fiber content is 40% by weight or more.
(3) The sanitary material according to (1) or (2), wherein the flat part has an appropriate size for pressing against a wound of a human body.
(4) A non-woven fabric containing cellulose fibers and thermoplastic resin fibers is wound around a core wire to form a cylindrical product, and then the winding end portion of the cylindrical product obtained by extracting the core wire is used as the thermoplastic resin. A wound cylindrical article obtained by crimping with a pierced or protruding article with a needle-like article heated to the melting point of the fiber and partially heat-sealing is applied to at least a part of the side part of the laminate. A method for producing a sanitary material, wherein pressure treatment is performed so as to form a flat portion.

  According to the sanitary material of the present invention, a non-woven fabric containing cellulose fibers and thermoplastic resin fibers is wound to form a cylindrical product, and a flat part is formed on at least a part of the side part of the laminate. Therefore, if this is used as a hemostatic member of the human body, the contact surface of the hemostatic surface of the hemostatic body can be widened, and it is easy to hit and fix wounds, excellent in compressibility and blood sucking properties, and has a simple hemostatic operation. And demonstrates a hemostatic effect in a short time.

FIG. 1 is a perspective view of a wound laminated sanitary material 1 having an elliptical cross section showing an embodiment of the present invention, and FIG. 2 is a perspective view of a hemostatic material 3 produced by cutting the sanitary material. is there.
In the wound sanitary material 1 according to the present invention, the wound cylindrical sanitary material is subjected to pressure treatment, that is, pressed and crushed, and the flat portion 2 is formed on at least a part of the side surface portion of the laminate. It is necessary to provide it. You may perform the said pressurization process under a heating as needed.

  The cylindrical sanitary material before being crushed is formed by winding a non-woven fabric containing cellulose fibers whose outer surface layer that becomes a flat portion is 40% by weight or more, preferably 50% by weight or more, more preferably 70% by weight or more into a columnar shape. Can be obtained. If the content of the cellulose fiber constituting the nonwoven fabric is less than 40% by weight, sufficient liquid absorbency and blood absorbability cannot be obtained.

  As a cellulose fiber used for a nonwoven fabric, the natural cellulose fiber containing a pulp and a linter and a regenerated cellulose fiber are preferable. As the regenerated cellulose fiber, for example, short fibers and long fibers such as copper ammonia rayon (cupra), viscose rayon (rayon), and polynosic are used. From the viewpoint of absorbability and lint-free properties, long fiber cellulose nonwoven fabric is used. Particularly preferred.

There is no restriction | limiting in particular in fibers other than a cellulose fiber used for a nonwoven fabric, Thermoplastic resin fibers, such as polyester, nylon, a polypropylene, can be used.
When used as a medical material, it is preferable to use cupra, rayon, cotton, cotton, polyester, or the like that is approved as a medical device for the nonwoven material.

  When the nonwoven fabric is wound into a cylindrical shape, a nonwoven fabric obtained by mixing or laminating two or more kinds of materials may be wound, or two or more kinds of nonwoven fabrics having different materials may be wound on top of each other. Alternatively, the cylindrical material may be wound separately from the inner and outer layers, but it is preferable that the material of the outer surface layer of the cylindrical material is cellulose fiber from the viewpoint of liquid absorbency and touch.

  The nonwoven fabric is wound using a core wire. In this case, it is preferable to wind the nonwoven fabric using two core wires. By adjusting the strength of winding of the nonwoven fabric, the hardness of the cylindrical object can be adjusted, whereby the porosity and the liquid absorption capacity required for the cylindrical object can be obtained. Moreover, the winding diameter of a cylindrical thing can be suitably selected according to a use, for example, when setting it as a hemostatic material, it is normally selected in the range of 7-40 mm.

  The outer end portion of the nonwoven fabric wound in a columnar shape can be fastened by a known method such as adhesive, needle punch, thread sewing, base fabric pressure bonding, heat sealing, or the like. When thermoplastic resin fibers are mixed in the non-woven fabric, it is preferable that the end portion of the non-woven fabric is partially heat-sealed and fixed. For example, it can be fused in one or a plurality of lines, dots, or an array distributed and scattered in a certain width. The shape and distribution density of the partial heat fusion are preferably selected as appropriate so that the flexibility and liquid absorbability of the fastening portion are not impaired. Also, there is no particular limitation on the heat fusion method. For example, a heat seal seal bar or an impulse sealer heating section formed so as to obtain a predetermined fusion point is pressed at a temperature and pressure at which fusion can be performed. It can be fixed by hitting. In particular, the method of partially fusing by piercing the end portion with a needle heated to the melting point of the thermoplastic resin fiber or more is preferable because it can prevent the flexibility and liquid absorbability of the end portion of the nonwoven fabric from being impaired. . The needle length of the needle-like material for partial heat fusion is preferably the length of the substantially radius of the columnar material from the viewpoint of the fastening strength of the outer terminal portion, for example, used as a medical structure for hemostasis. In such a case, the thickness is preferably 2 to 20 mm, more preferably 3 to 10 mm. Further, in order to secure the fixing of the end portion, the entanglement of the fibers can be promoted at the same time as the fusion by using a barbed needle.

In the present invention, as described above, a flat portion is provided on at least a part of the side surface portion of the wound laminated product by crushing with a press, and the cross-sectional shape thereof is a saddle shape, a semicircular shape, an oval shape, a flat shape. Examples include molds, rhombuses, and square shapes. And large contact surface to the hemostatic surface, in order to obtain a sufficient hemostasis area, the area of the flat portion is preferably 1 to 20 cm ^2, more preferably from 3～15Cm ^2, particularly preferably, 5 to 10 cm ² Range. When the area of the flat portion is within this range, it is possible to reliably stop hemostasis of a puncture wound that occurs after the injection needle, blood transfusion, blood collection, and the like, and the blood collection needle are punctured, thereby suppressing bleeding. The press working is not particularly limited, and the press working can be carried out using a known press machine, and a method of press-heating to a specific shape using a mold may be used.

  When the cross section of the wound laminate is a flat shape, the flatness is preferably in the range of long axis / short axis = 1.5-3. When the flat part is pressed against the wound and intended to stop bleeding, the shape of the flat part that hits the contact surface is within the range of vertical / lateral (side length) = 0.6 to 1.5. It is preferable in terms of ease of fixing. In the case of a saddle-shaped shape, the contact surface is preferably in the range of vertical / lateral (side length) = 0.4 to 0.6 in terms of stability and ease of fixing. In the case of an elliptical shape, the contact surface is preferably in the range of vertical / weft (side length) = 0.4 to 0.6 in terms of stability and ease of fixing.

  In the present invention, the porosity of the wound laminate is 50 to 97%, preferably 60 to 75%. The liquid absorption capacity of the wound laminate is 1 to 13 times, preferably 4 to 10 times. If the porosity is out of the above range, the liquid absorbency and the liquid retention are reduced. If the liquid absorption ratio is less than 1, the liquid absorption amount decreases. If the liquid absorption ratio exceeds 13 times, the liquid absorption amount is too large. Therefore, waste of disinfectant etc. arises and it becomes uneconomical.

In the present invention, the porosity means a value calculated by the following equation after measuring the volume (A) of only the material constituting the sample and the apparent volume (B) of the sample.
Porosity (%) = [1- (A / B)] × 100

In addition, the liquid absorption ratio is obtained by accurately measuring the weight g (C) of the sample, placing the sample on a mesh (10 mesh, wire diameter 0.5 mm), and placing the sample in pure water in a bat for 30 seconds. After dipping, the mesh is pulled up and allowed to stand for 10 minutes, the weight g (D) of the sample is measured, and the value calculated by the following formula is used.
Liquid absorption magnification (times) = (D−C) / C

EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, each characteristic in an example was evaluated with the following method.
1) Porosity: The volume of only the sample material and the apparent volume of the sample are measured and calculated by the above formula.
2) Liquid absorption ratio: Measured by the method described above.
3) Evaluation of hemostatic properties Hemostasis test: After blood collection from 120 blood donors, hemostasis treatment was performed on the puncture wound made by a blood collection needle. Using the hemostatic pads obtained in Examples 1 and 2 and Comparative Examples 1 and 2 with both ends of a stretchable base material being connectable with an adhesive, 1 minute, 3 minutes and 5 minutes after hemostasis treatment , ○, △, ×, from the good order Judged by.
A: Very good, no problem at all. ○: Good and no problem. Δ: Somewhat problematic. X: There are many problems.

[Example 1]
In Example 1, the cupra long-fiber non-woven fabric (Benlyse: trade name, registered trade name, manufactured by Asahi Kasei Fibers) shown in Table 1 and the nonwoven fabric of polypropylene spunbond long fiber (Eltus: trade name, manufactured by Asahi Kasei Fibers, registered trademark, PO3020) Was wound around two opposing core wires, and then the core wires were pulled out to obtain a long cylindrical product having a diameter of 20 mm. After the outer peripheral terminal part of the obtained long cylindrical object was thermocompression bonded, it was cut in a direction perpendicular to the longitudinal direction using a round blade to obtain a cylindrical pad having a diameter of 20 mm and a length of 20 mm. This cylindrical pad is processed into a flat cross section using a hot press, and the wound laminate (pad) having the characteristics shown in Table 1 with a flatness of 1.9 and an area of the flat portion of 4 cm ^2. I got).

  For the hemostasis test, the above flat pad is disposed on a stretchable base material so that the flat portion is on top, both ends of the base material can be connected with an adhesive material to make a hemostatic member, and the flat portion is hemostatic A hemostasis test was performed using the surface side. The results are shown in Table 1.

[Comparative Example 1]
As Comparative Example 1, only a commercially available gauze was laminated in 40 layers to form a layered form, which was punched into a cylindrical shape to produce a laminated pad having a diameter of 20 mm and a thickness of 10 mm. A hemostatic patch was provided by projecting on the base material, and the laminated surface was used for the hemostatic surface side, and was subjected to a hemostatic test. The results are shown in Table 1.

[Comparative Example 2]
As Comparative Example 2, using a cylindrical pad having a diameter of 20 mm and a length of 20 mm before hot pressing in Example 1, this cylindrical pad was disposed on a stretchable base material so that the side surface portion was on top, A hemostasis test was performed using both ends of the base material being connectable with an adhesive material to form a hemostasis member, and using the side surface portion on the hemostasis surface side. The results are shown in Table 1.
The evaluation results of Example 1 and Comparative Examples 1 and 2 are shown in Table 1.

  As shown in the results of Table 1, in the flat product (Example 1) of the product of the present invention, the contact area to the wound can be increased by changing the shape from a cylindrical shape to a flat shape obtained by pressing it, It had excellent effects that it was easy to hit a wound and was easy to fix, excellent in compressibility and blood sucking property, and shortened hemostasis time.

1 is a perspective view of a wound laminated sanitary material having an elliptical cross section showing an embodiment of the present invention. The perspective view of the hemostatic material manufactured by cutting the sanitary material.

Claims (4)

A wound laminate using at least one kind of non-woven fabric containing cellulose fibers, wherein the laminate has a porosity of 50 to 97% and a liquid absorption ratio of 1 to 13 times. A sanitary material characterized in that a flat part is provided on a part of the side part. The sanitary material according to claim 1, wherein the outer layer of the flat portion is a nonwoven fabric containing cellulose fibers, and the content of cellulose fibers is 40% by weight or more. The sanitary material according to claim 1 or 2, wherein the flat part has an appropriate size to press against a wound of a human body. A non-woven fabric containing cellulose fibers and thermoplastic resin fibers is wound around a core wire to form a cylindrical product, and then the winding end portion of the cylindrical product obtained by extracting the core wire is used as the melting point of the thermoplastic resin fiber. A rolled cylindrical product obtained by crimping with a pierced or projecting product with a needle-like product heated as described above and partially heat-sealing the flat product on at least part of the side surface of the laminate A method for producing a sanitary material, wherein the pressure treatment is performed to form

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