JP5082027B2 - Compression hemostatic cotton and method for producing the same - Google Patents

Description

The present invention relates to a compressed hemostatic cotton and a method for producing the same.
In particular, when using an arteriovenous indwelling needle for artificial dialysis, injection, infusion, blood collection, etc., it is excellent in workability when removing the injection needle as the inner needle and the plastic tube as the outer needle from the puncture part. The present invention also relates to a compressed hemostatic cotton that exerts an excellent compression hemostatic effect on a puncture site and a method for producing the same.

Conventionally, when removing an injection needle or the like from a blood vessel on the skin surface, applying cotton wool or gauze to the puncture part, pressing with a finger, and further covering the vicinity of the puncture site with a tape or band and pressing to stop hemostasis I was going.
In particular, when removing an indwelling needle such as artificial dialysis, a large amount of blood may be scattered vigorously from the puncture site. It has been sought.
Furthermore, soft absorbent cotton or gauze absorbs a large amount of blood, and in order to stop bleeding, it is necessary to change the absorbent cotton or gauze many times. Then there was a problem that it was difficult to press.

Therefore, in order to solve such a problem, as shown in FIG. 5A, a hemostatic pad has been proposed as a hemostatic pad for the purpose of making it difficult for the hemostatic pad to roll on the human body and to easily press the puncture portion. ing.
More specifically, the hemostasis pad 200 is characterized in that both surfaces 220 of the compression part are spherical convex surfaces, and a collar 230 protrudes from the outer periphery of the compression part 210 having a meteorite shape to form a meteorite shape with a collar (for example, , See Patent Document 1).

Further, as a hemostatic pad, a hemostatic pad has been proposed for the purpose of eliminating the work by the finger pressure method and enhancing the hemostatic effect by filling the inside with a transparent silicone gel.
More specifically, as shown in FIG. 5B, the lower end opening of the pad main body 320 formed by a transparent plastic film 310 in a dome shape having a lower end opening and filled with silicone gel 330 is the opening. This is a hemostatic pad 300 that is detachably connected to a plastic sheet 340 disposed so as to cover a part (see, for example, Patent Document 2).

JP 2003-19159 A (the whole sentence, all figures) Japanese Utility Model Publication No. 5-7216 (full text, all figures)

  However, when the hemostasis pad according to Patent Document 1 is used, since both surfaces of the compression portion are spherical convex surfaces, there is an advantage that the puncture portion is easily and intensively pressed. Since there are no guides or grooves on the surface to make it easy to remove the needle, it is necessary to be more careful in removing the needle so that blood does not leak, and there is a problem that workability is inferior.

  Further, the hemostatic pad disclosed in Patent Document 2 has a groove in the knob portion, so that the needle can be pulled out somewhat easily, but it is very expensive compared to compressed cotton and cannot be used easily. There was a problem.

Therefore, the inventors of the present invention have made diligent efforts and found that the above-mentioned problems can be solved by making the surface pressing the hemostatic site into a predetermined shape and providing the predetermined groove on the surface. It has been completed.
That is, the present invention can accurately cover the punctured portion of the injection needle or the like, and can efficiently compress and stop bleeding from the puncture portion due to the injection needle or the like, and is easy to remove the needle. Accordingly, it is an object of the present invention to provide a compressed hemostatic cotton that is excellent in workability and can be stably and inexpensively produced and a method for producing the same.

According to the present invention, a compression hemostatic cotton formed by integrally molding a fibrous material, having a surface for compressing a predetermined hemostatic site, a part of the surface being flat or curved, and A compression tourniquet provided with a groove portion that engages with a syringe needle or a plastic tube associated therewith on a part of the surface can be provided to solve the above-described problems.
That is, by having a flat or curved surface, the puncture portion can be efficiently compressed, while by providing the groove portion, the compression hemostatic cotton can be accurately placed at a predetermined location before the needle is removed. In addition, workability such as punching can be improved. Therefore, the needle can be removed accurately and easily, and the puncture portion can be efficiently compressed and stopped.
In addition, the groove part of this invention is a concave-shaped part provided in the surface for pressing the predetermined hemostatic location of the compression hemostatic cotton.

In constructing the compressed hemostatic cotton of the present invention, the depth of the groove is preferably set to a value within the range of 0.1 to 1.5 mm.
By configuring the groove portion in this manner, the needle can be accurately engaged with the injection needle or the plastic tube associated therewith, and the needle can be accurately and easily removed. Moreover, if the depth is within such a range, blood can be efficiently stopped without leaking from the groove.

In constructing the compressed hemostatic cotton of the present invention, it is preferable that a plurality of groove portions are provided and the shapes of the plurality of groove portions are the same or different.
By configuring the groove portion in this manner, the groove can be selected according to the thickness of the injection needle or the plastic tube, and blood can be efficiently stopped without leaking from the groove portion.

Moreover, in constructing the compressed hemostatic cotton of the present invention, the fibrous material is preferably composed of a mixed nonwoven fabric of rayon fibers and polyester fibers.
By comprising in this way, the compression hemostatic cotton which has both water absorption and water repellency can be obtained, Therefore, the bleeding from a puncture part can be absorbed and hemostatic efficiently.

In constructing the compressed hemostatic cotton of the present invention, it is preferable to set the durometer hardness (type E) of the compressed hemostatic cotton to a value in the range of 20 to 80 hardness by a measuring method based on JIS K6253.
By comprising in this way, it becomes possible to manage the hardness of compression hemostatic cotton quantitatively, and can manufacture stably.
As a result, hemostasis and the like are improved, the shape is not changed by absorbed blood, and usability can be improved.

Moreover, when composing the compressed hemostatic cotton of the present invention, it is preferable that the surface opposite to the surface for compressing a predetermined hemostatic site is flat.
By comprising in this way, before attaching a compression hemostatic cotton to a hemostatic location, it is easy to adhere | attach to this surface with a tape etc., and workability | operativity can be improved.

Moreover, when composing the compressed hemostatic cotton of the present invention, it is preferable to provide ribs at both ends of the compressed hemostatic cotton.
By comprising in this way, stability at the time of pressing can be improved.

Another aspect of the present invention is as follows:
A method for producing compressed hemostatic cotton obtained by integrally molding a fibrous material,
A step of forming a fibrous material into a roll shape, a heat-compression molding of the rolled fibrous material, and a flat or curved surface for pressing a predetermined hemostatic site, and injection into a part of the surface And obtaining a compressed hemostatic cotton having a groove engaging with a needle or a plastic tube associated therewith.

  By carrying out in this way, the size of the hemostatic cotton can be easily controlled, and it can be produced efficiently and stably at a low cost.

Fig.1 (a)-(d) is a figure provided in order to demonstrate the compression hemostatic cotton of this invention. Fig.2 (a)-(b) is a figure provided in order to demonstrate an example of the compression hemostatic cotton of this invention. Drawing 3 (a)-(b) is a figure offered in order to explain an example of the compression hemostatic cotton of the present invention. 4 (a) to 4 (b) are diagrams provided to explain the manufacturing process of the compressed hemostatic cotton of the present invention. FIGS. 5A to 5B are views provided to explain a conventional hemostasis pad.

[First Embodiment]
The first embodiment is a compression hemostatic cotton formed by integrally molding a fibrous material, and has a surface for compressing a predetermined hemostatic site, and a part of the surface is flat or curved, And it is a compression hemostatic cotton provided with a groove part engaged with the injection needle or the plastic tube attached to it at a part of the surface.
1 (a) and 1 (b), the hemostatic cotton 10 is formed by integrally molding a fibrous material 20, and includes a groove portion 14, and the surface 12 including the groove portion is flat or curved. It is characterized by the shape.
Hereinafter, the first embodiment of the present invention will be specifically described with reference to the drawings as appropriate.

1. Type of fibrous material (1) The type of fibrous material constituting the compressed hemostatic cotton is not particularly limited, and for example, one type of rayon, polyester, cotton, polypropylene, polyester, nylon, acrylic, etc. These may be used alone or in combination of two or more.
Further, the form of the fibrous material is not particularly limited, and may be a non-woven fabric, a woven fabric, or a mesh material.

More specifically, the rayon fiber and the polyester fiber are in a predetermined ratio (for example, a weight ratio of 10:90 to 90:10 is preferable, a weight ratio of 20:80 to 80:20 is more preferable, and 30:70 to 70: It is preferable to use a non-woven fabric obtained by blending with a weight ratio of 30).
The reason for this is that by using such a fibrous material, the polyester fiber acts as a binder for the rayon fiber at the time of molding, and after molding the compressed hemostatic cotton having a suitable water absorption and water repellency. This is because it can be done.

(2) Shape of compression hemostatic cotton As shown in FIG. 1 (a), the compression hemostatic cotton of the present invention is obtained by integrally molding the fibrous material 20, and is used for compressing a predetermined portion. The surface 12 is flat or curved.
The reason for this is that by using such a shape, the vicinity of the bleeding site can be effectively compressed, and hemostasis can be performed in a shorter time.

Moreover, the surface 18 on the opposite side to the surface for pressing a predetermined location is not particularly limited, and may be flat or curved.
The reason for this is that, for example, as shown in FIG. 1 (c), when the surface 18 on the opposite side to the surface for compressing a predetermined portion is curved, it is easy to compress the hemostatic part intensively. This is because it is easy to fix the hemostatic cotton with a tape or a band after the hemostatic cotton is installed in the hemostatic part.

In addition, as shown in FIGS. 1A and 1B, when the surface 18 on the opposite side to the surface for compressing a predetermined portion is flat, it is easy to compress the hemostatic cotton on the affected area, and from the affected area. It becomes difficult to roll and workability is improved.
In addition, if it is known that the hemostatic cotton is fixed with a tape at the time of hemostasis, the hemostatic cotton and the tape may be attached in advance to improve workability before use. This is because the work efficiency can be improved when the surface is flat.

Further, as shown in FIG. 1 (b), it is also preferable to provide flanges 16 at both ends of the compressed hemostatic cotton.
The reason for this is that by providing the collar, the compressed hemostatic cotton is difficult to roll from above the affected area, and workability can be improved. The shape of the collar is not particularly limited.

(3) Size In addition, the size of the fibrous material is not particularly limited. For example, the value is in the range of 1 to 5 cm in width, 1 to 7 cm in length, and 0.1 to 10 mm in thickness. It is preferable to do.
This is because such a size is easy to use and can improve workability.

(4) Surface state The surface state of the compressed hemostatic cotton is not particularly limited, and for example, it is preferable to have an embossed shape with irregularities on the surface.
The reason for this is not only that the surface area increases, but the water absorption is improved and blood can be prevented from leaking, and the softness of the compressed hemostatic cotton is visually recognized. It is because it can be made.

2. Groove (1) Groove As shown in FIG. 1 (a), a groove 14 that engages with the injection needle or a plastic tube associated therewith is provided on the surface for compressing a predetermined hemostatic site in the compressed hemostatic cotton. It is characterized by that.
The reason for this is that by having a groove portion, the compression hemostatic cotton can not only be easily installed when the syringe needle or the plastic tube attached thereto is stuck, but also when the needle is removed. This is because the guide can be easily removed and the working efficiency can be improved.

(2) Depth Moreover, as shown to Fig.1 (a), it is preferable to make the depth (h) of the groove part provided in a compression hemostatic cotton into the value within the range of 0.1-1.5 mm.
This is because, when the depth is less than 0.1 mm, it becomes difficult to engage with the injection needle or the plastic tube associated therewith, and blood from the bleeding part may leak.
On the other hand, when the depth exceeds 1.5 mm, a gap is generated when the needle is engaged with the injection needle or the plastic tube attached thereto, and not only the hemostatic effect is lowered, but also blood may leak. .
Therefore, it is more preferable that the depth of the groove is in the range of 0.5 to 1.0 mm.
And according to the shape of an injection needle, the depth of the part engaged with the front-end | tip part of an injection needle can be made shallow, and the depth of the part engaged with the base of an injection needle can also be deepened.

In addition, when the depth of the groove part is uniform, the depth of the groove part provided in the compression hemostatic cotton is, for example, as shown in FIGS. In the case of a shape, it means the distance to the highest part).
On the other hand, as shown in FIG. 2A, when the depth of the groove is not uniform, the average value of the depth of the deepest part and the shallowest part means the depth of the groove.
Further, as shown in FIG. 2B, when a plurality of groove portions are provided, the depth of each groove portion is set to a value within the above predetermined range.
As shown in FIG. 3A, when there is a blood pool, the depth excluding the blood pool is a value within the above predetermined range.

(3) Width As shown in FIG. 1A, the width (w) of the groove provided in the compressed hemostatic cotton is preferably set to a value in the range of 0.1 to 3.0 mm.
This is because, when the width is less than 0.1 mm, it is difficult to engage with the injection needle or the plastic tube attached thereto, and blood from the bleeding part may leak.
On the other hand, when the depth exceeds 3.0 mm, a gap is generated when the needle is engaged with the injection needle or the plastic tube attached thereto, and not only the hemostatic effect is lowered, but also blood may leak. . Furthermore, the hemostatic surface becomes narrow, and it is difficult to effectively stop the hemostasis.
Therefore, it is more preferable that the depth of the groove is in the range of 0.5 to 2.0 mm.
In accordance with the shape of the injection needle, the width of the portion engaging with the tip of the injection needle can be narrowed, and the width of the portion engaging with the base of the injection needle can be increased.

When the width of the groove is uniform, for example, as shown in FIGS. 1A to 1B, the width of the groove means the distance between the contact points between the hemostatic site compression surface and the groove. ing. On the other hand, in the case of a valley-like groove as shown in FIGS. 1C to 1D, the width of the groove means the distance between the highest portions of the hemostatic site compression surface.
Further, as shown in FIG. 2A, when the width of the groove is not uniform, the average value of the widths of the widest part and the narrowest part means the width of the groove.
Further, as shown in FIG. 2B, when a plurality of groove portions are provided, the width of each groove portion is a value within the above predetermined range.
As shown in FIG. 3A, when there is a blood pool, the width excluding the blood pool is a value within the above predetermined range.

(4) Number of grooves The number of grooves provided in the compressed hemostatic cotton is not particularly limited. For example, the central portion of the surface 12 for compressing a predetermined hemostatic site as shown in FIG. It is preferable to provide one.
This is because the hemostatic part can be intensively compressed by configuring in this way.
Moreover, several can also be provided like the groove parts 14b and c of FIG.2 (b).
The reason is that the groove can be selected depending on the thickness of the injection needle or the plastic tube, and the blood from the bleeding part can be made more difficult to leak.

(5) Form of groove part Moreover, it does not restrict | limit especially about the form of a groove part, Various shapes can be employ | adopted.
For example, as shown in FIG. 1 (a), a semi-cylindrical shape is preferable when viewed from the side. This is because if the groove is a semi-cylindrical shape, it is easy to engage with an injection needle or the like, and it is possible to perform compression hemostasis intensively and to form it stably.

Further, as shown in FIG. 1B, the shape of the groove is preferably a triangular prism.
This is because the size of the injection needle or the like is not limited, it is easy to engage, and compression hemostasis can be performed efficiently.

Moreover, as shown in FIG.1 (c), not only a hemostatic surface but the surface 18 of the other side can provide an additional groove | channel.
The reason for this is that when grooves are provided on both sides of the compressed hemostatic cotton, it is not necessary to determine the vertical direction during use, and usability is further improved.

Moreover, as shown in FIG.1 (d), it is also preferable to set it as a mountain-valley shape as a form of a groove part.
This is because the size of the injection needle or the like is not limited, it is easy to engage, and compression hemostasis can be performed efficiently. Moreover, if the shape of a groove part is a mountain-and-valley shape, it can improve also about retainability, such as a cylindrical injection needle.

Further, as shown in FIG. 2 (a), it is also preferable that the groove portion 14a is configured such that the groove portion at one end of the compressed hemostatic cotton is wide and the width gradually decreases toward the other end portion. .
This is because the end portion of the groove is so-called tapered so that it can be more easily engaged with an injection needle or the like.

Moreover, as shown in FIG.2 (b), while providing several groove part 14b, 14c, it is also preferable to make those forms differ.
This is because it becomes easy to deal with various injection needles and the like by having the groove portions of different forms.

Further, as shown in FIG. 3A, in the groove portion 14d, it is also preferable to form a blood pool portion larger than the width of the groove portion in a part of the groove portion.
This is because the blood can be more difficult to leak to the outside by providing such a blood pool.
Further, as shown in FIG. 3B, in the groove 14e, it is also preferable to make the color of the groove and other portions different from each other by coloring a part or the whole of the groove.
The reason for this is to make it easier to visually recognize the groove portion by coloring in this way.

3. Hardness In addition, the durometer hardness (E standard) of the compressed hemostatic cotton according to JIS K6253 is a value within the range of 20 to 80 hardness (basically there is no unit, but may be expressed as degrees or °). It is preferable that
The reason for this is that by configuring in this way, it is possible to quantitatively manage the hardness of the compressed hemostatic cotton and to manufacture it stably.
Further, when the hardness is less than 20 hardness, the density inside the compressed hemostatic cotton is lowered, and the compressed hemostatic cotton absorbs a large amount of blood, which may reduce the hemostatic function. In addition, the strength is reduced, and the shape changes during storage, which may make it impossible to use.
On the other hand, if the hardness exceeds 80 hardness, the function of absorbing bleeding blood is reduced, and bleeding blood may leak out to the surroundings, or skin irritation may become excessively high, which is not possible during use. This is because a pleasant feeling may occur.
Accordingly, the durometer hardness of the compressed hemostatic cotton is more preferably in the range of 25 to 70 hardness, and further preferably in the range of 30 to 60 hardness.

[Second Embodiment]
2nd Embodiment of this invention is a manufacturing method of the compression hemostatic cotton formed by integrally molding a fibrous material, Comprising: The process of shape | molding a fibrous material in roll shape, and heating compression molding of a rolled fibrous material And obtaining a compressed hemostatic cotton having a flat or curved surface for compressing a predetermined hemostatic site, and a groove part engaging with the injection needle or a plastic tube attached to the surface of the surface. , Including.
Hereinafter, the manufacturing method of the compression hemostatic cotton which is 2nd Embodiment of this invention is demonstrated concretely centering on a different point from 1st Embodiment.

1. Roll-shaped molding process The roll-shaped molding process is a process of molding a sheet-like fibrous material into a roll having a predetermined size, as shown in FIG.
In that case, the method for forming the sheet-like fibrous material into a roll shape is not particularly limited, but it can be easily produced, for example, by uniformly forming a roll shape with a winding device.

2. Heat compression molding process In the heat compression molding process, as shown in FIG. 4 (b), a fibrous material 30 of a predetermined size molded into a roll is compression molded using predetermined molds 42 and 44, This is a step of forming into a predetermined shape 40. For example, as shown in FIG. 4B, the heat compression molding process can be performed by moving the predetermined mold 42 up and down in the direction of the arrow.

Here, the conditions for heat compression molding are not particularly limited. For example, when a mixed non-woven fabric of polyester fiber and rayon fiber is used, from the softening point (for example, 240 ° C.) of the polyester fiber. It is preferable to mold at a temperature higher than the thermal decomposition temperature of rayon fiber (about 310 ° C.).
The reason for this is that by producing under such temperature conditions, the polyester fiber serves as a binder in the rayon fiber, and a compressed hemostatic cotton having both water absorption and water repellency can be efficiently produced.

  In addition, after heat-molding the fibrous material, it can be cut using a cutting jig so as to be a predetermined size, or after being formed into a roll shape, it is cut to a predetermined size. It is also possible to heat compression molding.

3. Groove part forming step As shown in FIG. 4 (b), the step of forming the groove part is for forming a groove part in advance when a fibrous material molded into a roll shape is compression-molded using a predetermined mold. A mold 42 having a convex portion can also be used.
The reason for this is that the manufacturing improves the workability and can be manufactured at a low cost.

Further, after molding into a predetermined shape, a groove portion can be further formed. This is because various groove shapes can be easily formed.
Furthermore, a method of removing the groove part mold after compression molding the roll-like fibrous material and the predetermined groove part mold as an integral body during compression molding can also be used.

As described above in detail, according to the present invention, when the injection needle or the like is withdrawn from the blood vessel, the compression hemostatic cotton having the groove portion can be used to easily install the compression hemostatic cotton in the puncture portion. I can do it now.
As a result, according to the present invention, the needle such as the injection needle can be easily removed, and the blood can be prevented from leaking from the puncture portion. In addition, it has become possible to effectively stop and compress the pressure by providing the compression surface including the groove with a predetermined shape.
In addition, it has become possible to stably produce a compressed hemostatic cotton having a groove at a low cost.
Therefore, the hemostatic cotton of the present invention is expected to contribute to significantly improving the working efficiency of a person who removes a needle such as an injection needle.

10, 40: compression hemostatic cotton, 12: hemostatic site compression surface, 14: groove, 14a, 14b, 14c, 14d, 14e: groove, 16: brim, 18: surface opposite to the hemostasis compression surface, 20: fiber , 30: roll-like fibrous material, 42, 44: mold for heat compression molding

Claims (8)

A compression hemostatic cotton formed by integrally molding a fibrous material,
It has a surface for pressing a predetermined hemostatic site, a part of the surface is flat or curved, and a part of the surface is provided with a groove portion that engages with an injection needle or a plastic tube attached thereto. Compression hemostatic cotton characterized by that.   The compressed hemostatic cotton according to claim 1, wherein the depth of the groove is set to a value within a range of 0.1 to 1.5 mm.   The compressed hemostatic cotton according to claim 1 or 2, wherein a plurality of the groove portions are provided, and the shapes of the plurality of groove portions are the same or different.   The compressed hemostatic cotton according to any one of claims 1 to 3, wherein the fibrous material is composed of a mixed nonwoven fabric of rayon fibers and polyester fibers.   The durometer hardness (type E) of the compressed hemostatic cotton is set to a value within a range of 20 to 80 hardness by a measurement method based on JIS K6253. Compression hemostatic cotton.   6. The hemostatic cotton according to claim 1, wherein a surface opposite to the surface for compressing the predetermined hemostatic site is flat.   The compression hemostatic cotton according to any one of claims 1 to 6, wherein a brim is provided at both ends of the compression hemostatic cotton. A method for producing compressed hemostatic cotton obtained by integrally molding a fibrous material,
Forming the fibrous material into a roll; and
The roll-like fibrous material is heat-compressed to have a flat or curved surface for compressing a predetermined hemostatic site, and a part of the surface is engaged with an injection needle or a plastic tube attached thereto. Obtaining a compressed hemostatic cotton having a groove, and a method for producing the compressed hemostatic cotton.

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