JP7330562B1 - medical gauze - Google Patents

Abstract

Kind Code: A1 A medical gauze (10) which can reliably prevent an X-ray contrast thread (3) from falling off without impairing the flexibility of the medical gauze, and which is excellent in distinguishability of the X-ray contrast thread (3) during radiography. to provide A medical gauze (10) partially woven with an X-ray contrast thread (3) containing an X-ray contrast agent, wherein the X-ray contrast thread (3) is arranged in a plurality of massive portions (41, 41) spaced apart in the thread length direction. It is composed of a design twisted yarn 4 having ... [Selection drawing] Fig. 1

Description

TECHNICAL FIELD The present invention relates to medical gauze, and more particularly to medical gauze partially woven with X-ray contrast thread.

BACKGROUND ART Medical gauze is often used in surgical operations to wipe off patient's blood, bodily fluids, etc., and to protect affected areas. However, it is not easy to see the gauze that has absorbed blood or the like with the naked eye, and there is a risk that the used gauze will remain in the body after the treatment.

Therefore, conventionally, there has been proposed a medical gauze partially woven with an X-ray contrast thread containing an X-ray contrast agent (for example, Patent Documents 1 and 2 below). By using this type of gauze, it is possible to detect residual gauze by taking X-rays during and after the operation and checking the contrast of the X-ray contrast thread to prevent gauze from remaining in the body.

However, in the gauze described in Patent Document 1, the X-ray contrast thread is woven into the densely woven portion of the gauze body to prevent the X-ray contrast thread from falling off from the gauze body. There is a problem that the softness of the gauze is impaired by the woven part.

In addition, the gauze described in Patent Document 2 prevents the X-ray contrast thread from falling off by weaving the X-ray contrast thread in close contact with reinforcing threads that are thicker than the warp and weft of the gauze body. This reinforcing thread also has the drawback of impairing the flexibility of the gauze.

Furthermore, in these conventional gauzes, since the thickness of the X-ray contrast thread containing the X-ray contrast medium is uniform, the contrast of the X-ray contrast thread by X-ray photography is not uniform in width. Inevitably, there are cases where it is not easy to identify the presence or absence of the X-ray contrast thread, for example, because it is confused with the contrast imaging of the affected tissue.

Japanese Patent No. 5660284 Registered Utility Model No. 3130538

The present invention has been made in view of the above-mentioned problems in conventional medical gauze partially woven with X-ray contrast thread. To provide a gauze for medical use which can surely prevent the falling-off of the contrast thread and is excellent in distinguishability of the X-ray contrast thread during X-ray imaging.

The present invention is a medical gauze partially woven with an X-ray contrast thread containing an X-ray contrast agent,
The X-ray contrast yarn is made of a design twisted yarn having a plurality of lumpy parts arranged at intervals in the yarn length direction, the design twisted yarn comprises a core yarn and a entwining yarn wound around the core yarn, at least The entanglement thread is characterized in that it contains an X-ray contrast agent .

Further, the present invention is a core-sheath type composite yarn in which the entwining yarn is made of multifilament, and the constituent single yarn of the multifilament is composed of a core portion containing an X-ray contrast agent and a sheath portion not containing an X-ray contrast agent. It is characterized by a

Further, the present invention is characterized in that the X-ray contrast yarn is configured by twisting a plurality of the design twisted yarns.

In the medical gauze according to the present invention, the X-ray contrast yarn is composed of a design twisted yarn having a plurality of lumpy portions in the yarn length direction, and only these lumpy portions are thickly formed. In addition, the X-ray contrast thread can be easily bent at a portion other than the massive portion, so that the flexibility of the gauze body is not impaired.

In addition, since the contrast enhancement of the X-ray contrast thread by X-ray photography is rich in expansion and contraction that repeatedly expands and shrinks in a large number of massive parts, the distinguishability of the X-ray contrast thread during X-ray photography is remarkably improved. can be done.

FIG. 2 is a plan view of the essential part of the medical gauze of this embodiment; FIG. 3 is a schematic front view showing a design twisted yarn that constitutes the X-ray contrast yarn of the medical gauze of the present embodiment. FIG. 4 is a schematic cross-sectional view of a constituent single yarn of a entwining yarn of the same twisted yarn. Fig. 2 is a schematic front view showing the configuration of the X-ray contrast thread of the medical gauze of the present embodiment;

As shown in FIG. 1, a medical gauze 10 of this embodiment is plain woven with a large number of warp yarns 1 and weft yarns 2 made of cotton yarn, and part of the warp yarns 1 contains an X-ray contrast agent instead of the warp yarns 1. The X-ray contrast thread 3 is woven into it.

The X-ray contrast yarn 3 is composed of a design twisted yarn 4 having a plurality of massive portions 41 arranged at intervals in the yarn length direction. As shown in FIG. 2, the design twisted yarn 4 of the present embodiment is composed of a knot yarn having a plurality of knot portions (ball joint portions) as the massive portion 41 . A knot yarn is composed of a core thread, a entwining thread wound around the core thread, and a presser thread that presses the entwining thread. By partially increasing the amount of winding of the entwining thread around the thread, a plurality of knot portions (ball joint portions) having a larger diameter than other portions are formed. The design twisted yarn 4 of the present embodiment contains a known X-ray contrast agent such as barium sulfate in each of the core yarn and the entwining yarn.

In addition, the core yarn and the entwining yarn are each made of multifilament, and the constituent single yarns 5 are, as shown in FIG. It is spun as a core-sheath type composite yarn consisting of 52.

In the constituent single yarn 5 of this embodiment, the core portion 51 is made of polyethylene terephthalate resin containing about 60% barium sulfate, and the sheath portion 52 is made of nylon resin containing no barium sulfate. is 60:40 (barium sulfate concentration of the entire constituent single yarn 5 is about 36%) and is spun to a fineness of 15 dtex. The core yarn and the entwining yarn of the design twisted yarn 4 are each configured as a multifilament obtained by aligning a total of 32 of the constituent single yarns 5, and the presser yarn is made of polyethylene terephthalate resin that does not contain barium sulfate. It is constructed as a multifilament (167T-48F) in which a total of 48 single yarns are arranged.

As shown in FIG. 4, the X-ray contrast yarn 3 of the present embodiment is constructed by twisting together a total of three design twisted yarns 4 (4A, 4B, 4C). This makes it possible to increase the number of massive portions 41 per unit thread length of the X-ray contrast thread 3 and to increase the diameter of the X-ray contrast thread 3 at portions other than the massive portions 41 . Furthermore, the design twisted yarn 4 such as knot yarn has variations in the intervals between the lumped portions 41 (see symbols L1 and L2 in FIG. 4), and when a plurality of designed twisted yarns 4 (4A, 4B, 4C) are twisted together, , the positions of the lumpy portions 41 of the design twisted yarns 4 may overlap each other (see reference numerals 41a and 41b in FIG. 4). At this time, by twisting a plurality of design twisted yarns 4, the diameter of the massive portion 41 of the X-ray contrast yarn 3 can also be increased (see reference numeral 41c in FIG. 4).

As described above, in the medical gauze 10 of the present embodiment, the X-ray contrast thread 3 is made of the design twisted yarn 4 having a plurality of lumpy portions 41 in the thread length direction, and only these lumpy portions 41 are formed thick. It is possible to reliably prevent the X-ray contrast filament 3 from falling off from the gauze body by being caught by the plurality of lumpy portions 41, and since only the lumpy portion 41 of the X-ray contrast filament 3 is thickly formed, the lumpy portion 41 It is easy to bend at parts other than the gauze, and the flexibility of the gauze body is not impaired.

Moreover, in the medical gauze 10 of the present embodiment, the entwining threads of the design twisted yarns 4 forming the lumpy portion 41 of the X-ray contrast thread 3 contain an X-ray contrast medium, so that the X-ray contrast thread 3 can be detected by X-ray imaging. The X-ray contrast enhancement becomes rich in expansion and contraction in which the width is repeatedly widened in a large number of massive portions 41, and the identifiability of the X-ray contrast enhancement thread 3 can be remarkably improved.

In addition, in the medical gauze 10 of the present embodiment, the entanglement yarn of the design twisted yarn 4 forming the mass portion 41 of the X-ray contrast yarn 3 is made of multifilament, so that the flexibility of the design twisted yarn 4 itself can be improved. . Moreover, since the constituent single yarn 5 of this multifilament is constituted by a core-sheath type composite yarn consisting of a core portion 51 containing an X-ray contrast agent and a sheath portion 52 not containing an X-ray contrast agent, the constituent single yarn The flexibility of 5 itself can be improved. Synthetic resin fibers generally become more brittle and less flexible as the concentration of the X-ray contrast medium such as barium sulfate increases. Since it is covered with the sheath portion 52 containing no agent, it is possible to maintain the flexibility of the constituent single yarn 5 itself.

In addition, in the medical gauze 10 of the present embodiment, the amount of winding of the entwining yarn around the core yarn is partially increased to form the massive portion 41 having a large diameter. The content can be increased. Therefore, it is not necessary to increase the content concentration of the X-ray contrast agent in the constituent single yarn 5 to the limit, and this also keeps the flexibility of the constituent single yarn 5 and the flexibility of the X-ray contrast contrast yarn 3 itself. be able to.

In addition, in the medical gauze 10 of the present embodiment, the X-ray contrast yarn 3 is formed by twisting a plurality of design twisted yarns 4, so as described above, the per unit yarn length of the X-ray contrast yarn 3 The number of lumps 41 can be easily increased, and the diameter of the lumps 41 can be easily increased at the portion where the lumps 41 of a plurality of design twisted yarns 4 overlap each other. This makes it possible to more reliably prevent the X-ray contrast thread 3 from coming off, and to further improve the distinguishability of the X-ray contrast thread during X-ray imaging. Furthermore, since the portions of the X-ray contrast thread 3 other than the lumpy portion 41 are also twisted with a plurality of design twisted yarns 4, the flexibility of the X-ray contrast thread 3 itself can be improved.

Although the medical gauze 10 of this embodiment has been described above, the present invention can also be implemented in other embodiments.

For example, in the above embodiment, a knot yarn having a plurality of knot portions is used as the design twisted yarn 4, but the present invention is not necessarily limited to this. Alternatively, other design twisted yarns such as slub yarn having a plurality of slabs as lumps may be employed.

In the above embodiment, the X-ray contrast yarn 3 made of the design twisted yarn 4 is woven into the middle portion of the gauze body, but the present invention is not necessarily limited to this. May be woven. Further, the distinguishability of the X-ray contrast yarn 3 may be further improved by weaving a single type or a plurality of types of design twisted yarns 4 into a plurality of locations of the gauze body.

The present invention can also be implemented in various forms with various improvements, modifications, and variations based on the knowledge of those skilled in the art without departing from the spirit of the present invention. In addition, any of the matters specifying the invention may be replaced with other techniques within the scope of producing the same action or effect, and the integrally configured matters specifying the invention may be constructed from a plurality of members. Alternatively, the matters specifying the invention, which are composed of a plurality of members, may be implemented in a form integrally configured.

10 Medical gauze 1 Warp 2 Weft 3 X-ray contrast yarn 4 Design twisted yarn 41 Massive portion 5 Structural single yarn 51 Core 52 Sheath

Claims (3)

A medical gauze partially woven with an X-ray contrast thread containing an X-ray contrast agent,
The X-ray contrast yarn is made of a design twisted yarn having a plurality of lumpy parts arranged at intervals in the yarn length direction,
The design twisted yarn comprises a core yarn and a entwining yarn wound around the core yarn,
Medical gauze, characterized in that at least said twine contains an X-ray contrast agent . The entwining yarn is composed of a multifilament, and the constituent single yarn of the multifilament is a core-sheath type composite yarn composed of a core portion containing an X-ray contrast agent and a sheath portion not containing an X-ray contrast agent. The medical gauze according to claim 1 . 3. The medical gauze according to claim 1, wherein the X-ray contrast yarn is constructed by twisting a plurality of the design twisted yarns.

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