JP2018057587A - Medical gauze weaving method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical gauze weaving method that enables smooth weaving by hindering stretch and cut of an X-ray contrast thread during weaving by use of an air jet loom, and to provide a medical gauze.SOLUTION: An X-ray contrast thread 7, as a warp, is woven in a gauze body 6 formed from a plurality of warps 3 and wefts 5 intersecting one another. The X-ray contrast thread 7 is formed by covering an X-ray contrast thread body 7A through which an X-ray cannot pass is covered with an auxiliary thread 9. Thus, by covering the X-ray contrast thread body 7A with the auxiliary thread 9, the tensile strength of the X-ray contrast thread 7 can be improved. Therefore, even if an X-ray contrast thread 7 is pulled due to vertical movement of a pair of heddles in a case where the medical gauze 1 is woven using an air jet loom, stretch and cut of the X-ray contrast thread 7 can be hindered by the auxiliary thread 9. Accordingly, the medical gauze 1 can smoothly be woven even by use of the air jet loom.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method for weaving medical gauze in which an X-ray contrast yarn coated with an auxiliary yarn is woven, and a medical gauze.

  Medical gauze absorbs blood, body fluids, etc. when used in a patient's body during surgery, etc., making it difficult to distinguish it from organs and tissues. Is called. In general, since gauze fibers are not shown in an X-ray image, it is difficult to confirm the presence or absence of gauze left in the body after surgery.

  Therefore, various medical gauze has been proposed in which one or more X-ray contrast yarns are woven into the gauze, and the remaining gauze can be easily confirmed by X-ray photography after the operation (for example, patent documents). 1). Patent Document 2 describes that a medical gauze incorporating an X-ray contrast yarn is woven using an air jet loom.

JP 2004-194994 A Japanese Patent Laid-Open No. 2015-096135

  However, when a medical gauze woven with X-ray contrast yarn is actually woven by an air jet loom, there are the following problems. In the air jet loom, when the warp is loosened when weaving, the formation of the opening through which the weft passes due to the vertical movement of the reed is delayed, so that the warp is tensioned so as not to loosen. For this reason, when an X-ray contrast yarn made of a synthetic resin such as polypropylene resin or styrene-based thermoplastic elastomer is to be woven into the constituent yarn as a part of the warp, the X-ray contrast yarn has a strong tension accompanying the vertical movement of the heel. Therefore, it becomes difficult to weave smoothly by stretching or cutting.

  The present invention has been made in view of the above points, a method for weaving a medical gauze that enables smooth weaving by suppressing the elongation and breakage of the X-ray contrast yarn during weaving by an air jet loom, and An object is to provide a medical gauze.

In order to solve the above-described problems, the medical gauze weaving method according to claim 1 is characterized in that an x-ray contrast yarn is provided as at least one warp on a gauze body having a plurality of warps and wefts intersecting each other. In the weaving method of the woven medical gauze,
A radiopaque X-ray contrast yarn body is covered with an auxiliary thread to form the X-ray contrast yarn,
When weaving the gauze body by an air jet loom, the X-ray contrast yarn covered with the auxiliary yarn is woven as a part of the plurality of warps.
The weaving method of the medical gauze according to claim 2 is characterized in that, in the configuration of claim 1, the X-ray contrast yarn main body is covered with 4 to 16 auxiliary yarns.
The weaving method of the medical gauze according to claim 3 is characterized in that, in the configuration of claim 1 or 2, the auxiliary yarn is knitted in a braid shape and covers the X-ray contrast yarn main body.
The weaving method for medical gauze according to claim 4 is characterized in that, in the configuration of any one of claims 1 to 3, the constituent yarn and the auxiliary yarn are cotton yarn.
The medical gauze according to claim 5 is a medical gauze in which an x-ray contrast yarn is woven into at least one warp yarn in a gauze body having a plurality of warps and wefts that intersect each other as constituent yarns.
The X-ray contrast yarn is characterized in that the strength of the X-ray contrast yarn is increased by covering an X-ray opaque main body with an auxiliary yarn.
A medical gauze according to a sixth aspect is characterized in that, in the configuration of the fifth aspect, the X-ray contrast yarn main body is covered with four to sixteen auxiliary yarns.
A medical gauze according to a seventh aspect of the invention is characterized in that, in the configuration of the fifth or sixth aspect, the auxiliary yarn is knitted in a braid shape and covers the X-ray contrast yarn main body.
The medical gauze according to an eighth aspect of the invention is characterized in that, in the configuration of any one of the fifth to seventh aspects, the constituent yarn and the auxiliary yarn are cotton yarn.

According to the first and fifth aspects of the present invention, the strength of the X-ray contrast yarn can be increased by covering the X-ray contrast yarn body with the auxiliary yarn. Thereby, the expansion and breakage of the X-ray contrast yarn due to the vertical movement of the reed can be suppressed, and the air jet loom can be woven smoothly.
According to the second and sixth aspects of the invention, the required strength can be obtained by covering the X-ray contrast yarn main body with 4 to 16 auxiliary yarns.
According to the third and seventh aspects of the invention, the auxiliary yarn can be stably held on the X-ray contrast yarn main body by braiding the auxiliary yarn into a braided shape.
According to the invention which concerns on the said 4th and 8th, by making a gauze main body and an auxiliary thread into a cotton thread, an auxiliary thread does not affect the material characteristic of a gauze main body.

It is the schematic of the medical gauze which concerns on one Embodiment of this invention. It is the elements on larger scale of the X-ray contrast thread shown in FIG. 1, (a) is a figure which shows the X-ray contrast thread of the state which coat | covered the X-ray contrast thread main body with four auxiliary threads, (b) FIG. 3 is a view showing an X-ray contrast yarn in a state where an X-ray contrast yarn body is covered with 16 auxiliary yarns. It is a schematic perspective view of the coating | coated apparatus for coat | covering the X-ray contrast thread | yarn main body with an auxiliary thread. It is a schematic perspective view of the principal part of the air jet loom which weaves a medical gauze. It is the partial schematic of the continuous body of the medical gauze woven by the air jet loom shown in FIG.

Hereinafter, a medical gauze according to an embodiment of the present invention will be described in detail with reference to FIGS. 1, 2, and 5.
The medical gauze 1 of the present invention is used for medical treatment such as treatment and surgery, and can be used to absorb body fluid, blood, and the like.
As shown in FIGS. 1 and 2, the medical gauze 1 includes a plurality of warps 3, a plurality of wefts 5, and an X-ray contrast yarn 7. A plurality of warps 3 and wefts 5 are plain woven so as to alternately intersect as constituent yarns of the gauze body 6 of the medical gauze 1, and the X-ray contrast yarns 7 are woven into the gauze body 6 as warps. .

  The warp 3 and the weft 5 are woven so as to alternately intersect with each other at a substantially constant interval, and the interval is arbitrary and can be changed as appropriate. As an example, the warp yarn 3 and the weft yarn 5 employ a 40th-thick cotton yarn. However, the warp yarn 3 and the weft yarn 5 can be of any thickness, and are not limited to cotton yarn. For example, cellulose fibers, synthetic fibers, and mixtures thereof Any material such as, for example, can be used.

  On both ends of the warp 3 (upper and lower sides in FIG. 1), weft densely woven portions 11 and 11 are formed in which the intervals of the wefts 5 are more closely woven than other portions that are plain woven. Further, on both ends of the weft 5 (on the left and right sides in FIG. 1), warp densely woven portions 13 and 13 are formed in which the intervals of the warp 3 are more closely woven than other portions that are plain woven.

  As shown in FIG. 5, the medical gauze 1 is continuously woven vertically and horizontally, and between the weft densely woven portions 11 and 11 and between the warp densely woven portions 13 and 13 of the adjacent medical gauze 1. Portions 11A and 13A in which the distance between the warp 3 and the weft 5 is sparse are formed. By cutting the portions 11A and 13A (see the two-dot chain line in FIG. 5), a plurality of medical gauze 1 is obtained.

  The X-ray contrast yarn 7 is woven so as to cross the front and back alternately with a plurality of wefts 5 like the other warps 3 (see FIG. 2). The X-ray contrast yarn 7 is obtained by coating an X-ray opaque yarn main body 7A with an auxiliary yarn 9 described later. As a material of the X-ray contrast yarn main body 7A, for example, a synthetic resin containing an X-ray non-transparent substance such as barium sulfate can be used. As the synthetic resin, for example, a silicon resin, a polyvinyl chloride resin, a polypropylene resin, a polyester resin, a polyethylene resin, a styrene thermoplastic elastomer, or the like can be used. The thickness of the X-ray contrast yarn main body 7A is thicker than that of the warp 3, the weft 5, and the auxiliary yarn 9. In the present embodiment, the X-ray contrast yarn main body 7A has a monofilament structure, but may have a multifilament structure.

  As shown in FIG. 2A, the auxiliary yarn 9 is composed of four yarns, and is knitted in a braid shape around the X-ray contrast yarn main body 7A to cover the X-ray contrast yarn main body 7A. The auxiliary yarn 9 is made of the same material as the warp yarn 3 and the weft yarn 5 which are constituent yarns of the gauze body 6. The auxiliary yarns 9 are not limited to the same ones as the warp yarns 3 and the weft yarns 5. For example, different materials, different yarn count cotton yarns, twin yarns, etc. can be used to cover the X-ray contrast yarn main body 7A. . In this way, by covering the X-ray contrast yarn main body 7A with the auxiliary yarn 9, the tensile strength of the X-ray contrast yarn 7 can be increased.

Here, as an example, refer to FIG. 3 for a method of manufacturing the X-ray contrast yarn 7 by using the coating device 31 and braiding the four auxiliary yarns 9 around the X-ray contrast yarn body 7A in a braid shape. To explain.
First, the X-ray contrast yarn main body 7A is set at the center of the coating apparatus 31 so as to be movable upward. Then, the four bobbins 33 wound with the auxiliary yarns 9 are respectively attached to the four movable portions 35 installed on the guide rail 37. The guide rail 37 is provided along two substantially elliptical orbits surrounding the X-ray contrast yarn main body 7A and intersecting each other at a portion surrounding the X-ray contrast yarn main body 7A. Two bobbins 33 are provided on each guide rail 37. It is provided one by one. Then, the four auxiliary yarns 9 are pulled out from each of the bobbins 33 to the knitting place with the X-ray contrast yarn main body 7A. Thereafter, while feeding the X-ray contrast yarn main body 7A upward, the four movable portions 35 are moved along the guide rail 37 (see the arrows in FIG. 3), and the four auxiliary yarns 9 are knitted into a braided shape. The line contrast yarn main body 7A is covered. Thus, the X-ray contrast yarn main body 7A can be covered with the four auxiliary yarns 9 to manufacture the X-ray contrast yarn 7 (see FIG. 2A).

Next, a method for weaving the medical gauze 1 using the air jet loom 21 will be described with reference to FIGS. 4 and 5.
First, the auxiliary yarn 9 is knitted in a braid shape around the X-ray contrast yarn main body 7A using the coating device 31, and the X-ray contrast yarn main body 7A is covered to manufacture the X-ray contrast yarn 7 (see FIG. 3). ). Then, the plurality of warps 3 and the X-ray contrast yarn 7 as a part of the warp are passed through a pair of ridges 23 and 23, and the warp 3 and the X-ray contrast yarn 7 are set in the air jet loom 21. Then, an opening 25 for passing the weft 5 is formed by the vertical movement of the pair of reeds 23, 23, and the weft 5 is injected from the nozzle 27 of the air jet loom 21 into the opening 25. When the tip of the injected weft 9 reaches a predetermined location, the weft 9 is cut. Here, the weft 5 is ejected each time the pair of hooks 23, 23 move up and down. In this way, each time the vertical movement of the pair of ridges 23, 23 is repeated, the weft 5 is ejected by the nozzle 27, the weft 5 is woven into the warp 3 and the X-ray contrast yarn 7, and the continuum 1A of the medical gauze 1 is formed. Weave (see FIG. 5).

  At this time, the X-ray contrast yarn main body 7A is covered with the four auxiliary yarns 9, so that the tensile strength of the X-ray contrast yarn 7 is increased. For this reason, when the medical gauze 1 is woven using the air jet loom 21, even if the X-ray contrast yarn 7 is pulled by the vertical movement of the pair of scissors 23, 23, the auxiliary yarn 9 causes the X-ray contrast yarn 7 to move. Elongation and breakage can be suppressed. Thereby, even if it uses the air jet loom 21, the medical gauze 1 can be smoothly woven.

  As described above, the medical gauze 1 woven with the X-ray contrast yarn 7 coated with the auxiliary yarn 9 is woven by the air jet loom 21 so that the continuum 1A of the medical gauze 1 continuously woven vertically and horizontally. Can be woven at high speed. Then, by cutting the continuous body 1A appropriately in length and breadth, a medical gauze 1 in which a plurality of X-ray contrast yarns 7 are woven can be produced, and the production efficiency can be increased.

  Further, since the X-ray contrast yarn main body 7A is covered with the auxiliary yarn 9, the strength is increased and the friction with the warp yarn 3 and the weft yarn 5 is increased, so that it is difficult to come off. During use, it is hard to come off even if it is grabbed with tweezers. Furthermore, since the auxiliary yarn 9 is knitted into a braided shape and is stably held by the X-ray contrast yarn main body 7A, even if the medical gauze 1 is folded or bent, it is difficult to fray.

  In the above embodiment, the X-ray contrast yarn 7 is covered with four auxiliary yarns 9 (see FIG. 2A), but may be covered with, for example, 16 auxiliary yarns 9 ( 2 (b)), the number of auxiliary yarns 9 is preferably 4 to 16 mainly from the viewpoint of strength.

  Further, in the above embodiment, the auxiliary yarn 9 is knitted in a braid shape, but may be knitted in a spiral shape, or may be formed in other modes so as to cover the X-ray contrast yarn main body 7A. .

  Furthermore, in the above embodiment, the X-ray contrast yarn 7 coated with the auxiliary yarn 9 is woven into only one place of the gauze body 6, but may be woven into two or more places, and the number and arrangement thereof are appropriately determined. Can be changed.

DESCRIPTION OF SYMBOLS 1 ... Medical gauze, 3 ... Warp, 5 ... Weft, 6 ... Gauze main body, 7 ... X-ray contrast thread, 9 ... Auxiliary thread, 21 ... Air jet loom

In order to solve the above-described problems, the medical gauze weaving method according to claim 1 is characterized in that an x-ray contrast yarn is provided as at least one warp on a gauze body having a plurality of warps and wefts intersecting each other. In the weaving method of the woven medical gauze,
A radiopaque X-ray contrast yarn main body is coated with an auxiliary thread to form the X-ray contrast yarn having an increased tensile strength ,
When weaving the gauze body with an air jet loom , tension is applied to the plurality of warp yarns so as not to be loosened, and tension is applied to the X-ray contrast yarns that are covered with the auxiliary yarns to increase the tensile strength. and wherein the interworking as a part of the plurality of warp yarns.
The weaving method of the medical gauze according to claim 2 is characterized in that, in the configuration of claim 1, the X-ray contrast yarn main body is covered with 4 to 16 auxiliary yarns.
The weaving method of the medical gauze according to claim 3 is characterized in that, in the configuration of claim 1 or 2, the auxiliary yarn is knitted in a braid shape and covers the X-ray contrast yarn main body.
The weaving method for medical gauze according to claim 4 is characterized in that, in the configuration of any one of claims 1 to 3, the constituent yarn and the auxiliary yarn are cotton yarn.

According to the first aspect of the invention, the strength of the X-ray contrast yarn can be increased by covering the X-ray contrast yarn main body with the auxiliary yarn. Thereby, the expansion and breakage of the X-ray contrast yarn due to the vertical movement of the reed can be suppressed, and the air jet loom can be woven smoothly.
According to the second aspect of the present invention, the required strength can be obtained by covering the X-ray contrast yarn main body with 4 to 16 auxiliary yarns.
According to the third aspect of the invention, the auxiliary yarn can be stably held on the X-ray contrast yarn main body by weaving the auxiliary yarn into a braid shape.
According to the fourth aspect of the present invention, the auxiliary yarn does not affect the material characteristics of the gauze main body by using the gauze main body and the auxiliary yarn as cotton yarn.

Claims (8)

In a gauze weaving method in which an x-ray contrast yarn is woven into at least one warp yarn in a gauze body having a plurality of warp yarns and weft yarns as constituent yarns,
A radiopaque X-ray contrast yarn body is covered with an auxiliary thread to form the X-ray contrast yarn,
A method for weaving a medical gauze, wherein when weaving the gauze body by an air jet loom, the X-ray contrast yarn covered with the auxiliary yarn is woven as a part of the plurality of warps.   The method of weaving medical gauze according to claim 1, wherein the X-ray contrast yarn main body is covered with 4 to 16 auxiliary yarns.   The method of weaving a medical gauze according to claim 1 or 2, wherein the auxiliary yarn is knitted in a braid shape to cover the X-ray contrast yarn main body.   The method of weaving medical gauze according to any one of claims 1 to 3, wherein the constituent yarn and the auxiliary yarn are cotton yarn. In a medical gauze in which an X-ray contrast yarn is woven into at least one warp yarn in a gauze body having a plurality of warp yarns and weft yarns as constituent yarns,
A medical gauze characterized in that the X-ray contrast yarn has an X-ray-opaque X-ray contrast yarn main body covered with an auxiliary yarn to increase the strength.   The medical gauze according to claim 5, wherein the X-ray contrast yarn main body is covered with four to sixteen auxiliary yarns.   The medical gauze according to claim 5 or 6, wherein the auxiliary yarn is knitted in a braid shape and covers the X-ray contrast yarn main body.   The medical gauze according to any one of claims 5 to 7, wherein the constituent yarn and the auxiliary yarn are cotton yarn.

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