JP2003102771A - Cloth for endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cloth for an endoscope with little thread dropping, excellent in the liquid absorbency and in the softness by solving a problem of an existing cloth for an endoscope such as a small-cut gauze piece that the threads are easy to get loose and drop off, or of a non-woven fabric cloth that the softness is deteriorated when the cloth is thickened for improving the liquid permeability. SOLUTION: The cloth 20 for an endoscope consists of a cloth B with an X-ray non-transmitting filament (marker yarn 22), and the cloth B is made of braids. In the cloth B, the marker yarn 22 is disposed in place of one thread constituting the cloth B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscopic cloth used exclusively in endoscopic surgery.

[0002]

2. Description of the Related Art A large number of gauze is used for the purpose of wiping off bleeding during a surgical operation. However, if these gauze remain in the body, various physical disorders such as pain, discomfort, or slight fever may occur. All gauze must be removed from the body at the end of the surgery, as it causes problems.

However, gauze that has absorbed blood and the like is hard to find in the body with the naked eye. Therefore, in surgery, a gauze in which an X-ray impermeable resin thread (hereinafter, also referred to as a marker thread) is woven instead of one warp that constitutes the gauze is used. X-ray contrast (X-ray imaging) is performed before closing, to check the presence or absence of gauze with the marker thread as a clue, and remove it if it remains. As the above-mentioned marker thread, a multifilament in which barium sulfate is kneaded in polypropylene resin, or a vinyl chloride resin in which barium sulfate is kneaded, a filamentous material of silicon resin or polyester resin is generally used.

Although the marker thread is attached in this way, since the gauze itself is a coarsely woven cloth, there is a concern that the thread at the cut end of the gauze may be loosened and the thread may remain in the body. It Further, since the surface of the marker thread is generally smooth, there is a concern that the marker thread may fall out of the gauze body.

Therefore, conventionally, the weaving density in the vicinity of the cut end is increased or the edge is bent to prevent loosening of the gauze end and dropout of the marker thread. Recently, a gauze in which a non-woven fabric is laminated on both sides has also been proposed. By sandwiching the marker yarn between the gauze layer and the non-woven fabric layer, the gauze is prevented from coming off, and the non-woven fabric layer prevents the gauze from unraveling. It has also been proposed to use a non-woven fabric for the entire fabric portion without using gauze, and insert a marker thread in the middle of the non-woven fabric layer (hereinafter sometimes referred to as a gauze-nonwoven fabric laminated fabric).

[0006] By the way, conventionally, it was usual to perform an operation by performing a laparotomy, a thoracotomy, etc., but in recent years, endoscopic surgery has become popular. The endoscopic surgery is to open several small holes of about 5 to 10 mm in the abdomen or the like,
It is an operation performed by inserting a slender camera and surgical tools through this hole, and the scars are small, so there is little pain, and the recovery after surgery is fast, and it is a method with little burden on the patient.

In the endoscopic surgery, a large number of cloths are used because it is necessary to wipe bleeding in the abdominal cavity with gauze or the like as in the laparotomy. The cloth for this endoscope is
It must be inserted through the thin tube inserted into the abdomen described above, and from the viewpoint of removability after it has been inserted, a strip that is smaller and longer than ordinary gauze for open surgery (for example, 30 cm x 30 cm) Has become.

As the above-mentioned cloth for endoscopes, the cloth for normal abdominal surgery (gauze, non-woven cloth, gauze-non-woven cloth laminated cloth or the like with a marker thread attached thereto) cut and made small is exclusively used as the above-mentioned endoscopic cloth. Has been done.

[0009]

Although the cloth for endoscopes is small as described above, the liquid absorption amount is required to be as large as possible, and the yarn is not unraveled at the edges of the cloth. Is required.

However, the above-mentioned gauze has a problem that the smaller the fabric area, the easier the yarn is to loosen and fall off. If the cutting edge is bent as described above, it is possible to prevent the yarn from unraveling, but since the ratio of the cutting edge portion to the cloth area of the endoscope is high, it is necessary to bend all the edge portions. Is very expensive.

On the other hand, a non-woven fabric or a gauze-non-woven fabric is hardly loosened from the cut end. However, if the non-woven fabric is made thicker for the purpose of improving liquid absorption, it may become less flexible and unsuitable for use in surgery. There is.

[0012] Therefore, an object of the present invention is to provide a cloth for an endoscope, in which the yarn is hardly dropped, the liquid absorbing power is excellent, and the flexibility is good.

[0013]

The cloth for an endoscope according to the present invention is a cloth for an endoscope which is made of cloth having X-ray opaque yarns, and the cloth is made of a braid. What is done is the summary.

The braid is a cloth in which the yarns run obliquely with respect to the lengthwise direction and the yarns intersect with each other, and is in the form of an elongated strip (or a cord) as a whole. In such a braid, for example, in the flat striking braid, the direction is changed so that the yarn makes a U-turn from the right slant to the left slant (or the left slant to the right slant) at the edge of the fabric, and the long side edge of the fabric Since the portion is formed, the yarn does not come loose from the long side end of the fabric. In addition, at the short side edge of the fabric of the flat braid, all of the yarns run diagonally toward the direction of the anti-short side (the direction toward the center of the fabric) and intersect with other yarns. Even if this crossing is solved a little near the edge,
It is very unlikely that the thread will come loose and fall off.

In addition, for example, in the case of the round striking braid, 2
Since the yarns of the group run spirally in the opposite directions to the left and right and intersect with each other to form a tubular shape, there is no fabric end on the longitudinal side of the fabric, and therefore the yarns start from this longitudinal side. It cannot be solved. In addition, as for the short side edge of the fabric, as in the case of the flat braid, all the yarns run diagonally toward the opposite short side edge direction (the fabric center direction), so that the yarn is crossed. It is unlikely that the article will break and fall out.

As described above, since the braid hardly loosens and falls off, the endoscopic cloth using this braid as a fabric has almost no fear of the filament falling off and remaining in the body. .

In addition, as described above, for example, if the above-mentioned non-woven fabric is made thick, it may have poor flexibility and may not be suitable for use in surgery. However, in the above-mentioned braid, it is possible to adjust the number of striking threads and the basis weight (for example, It is possible to improve the liquid-absorbing power while maintaining the softness by reducing the number of striking threads and increasing the basis weight. Therefore, it is possible to obtain a cloth for an endoscope having excellent liquid-absorbing property.

When the thread thickness is 145 to 300 d tex,
The number of threads of the braid is 16 to 64 threads / cm (that is,
The number of threads to be struck per 1 cm is preferably 16 to 64),
It is more preferably 20 lines / cm or more and 40 lines / cm or less. This is because if the number of strokes is too high, the fabric will become hard,
On the other hand, if the number of strokes is too low, the texture becomes too coarse and easy to unravel.

The basis weight is 100 to 500 g / m ²
Is preferred, more preferably 180 g / m ² or more, 400
g / m ² or less. This is because if the fabric weight is too high, the fabric becomes thick and the flexibility becomes poor, while if the fabric weight is too low, the liquid absorbency becomes poor.

In addition, in the present invention, it is preferable that the X-ray non-transmissive yarn is inserted into the weave of the braid along the longitudinal direction of the braid. That is, the braid is mainly composed of two groups of yarns running diagonally in opposite directions with respect to the longitudinal direction of the braid. It is preferable that the line-impermeable yarn is inserted.

For example, as compared with the conventional one in which gauze is used as the cloth and the X-ray opaque thread (marker thread) is inserted in place of the constituent thread of this gauze, the two groups of In the case where the X-ray non-transmissive yarn (marker yarn) is inserted straight into the diagonally traveling yarn, the X-ray non-transmissive yarn is gripped by the two groups of yarns described above. It becomes difficult for the non-permeable yarn to come off. In addition, since it is inserted in the longitudinal direction, the X-ray non-transmissive yarn can be arranged longer than that arranged in the width direction (for example, the X-ray opaque yarn is arranged in the entire length in the longitudinal direction of the cloth for endoscope). ), The visibility by X-ray contrast can be improved.

Further, in the present invention, it is preferable that the X-ray non-transmissive yarn is thermally fused to the braid. Such heat fusion can further prevent the X-ray non-transmissive yarn from coming off.

In the present invention, it is preferable that the X-ray non-transmissive yarn is used as at least one yarn constituting the braid.

As described above, the yarns constituting the braid run diagonally, but instead of at least one of the yarns, an X-ray opaque yarn is arranged (hereinafter referred to as a braid constitution. Sometimes referred to as a thread replacement type), the X-ray non-transmissive yarn runs obliquely with respect to the longitudinal direction of the cloth for endoscopes, that is, in the case of a flat braid, for example, X-ray non-transmission The flexible yarn runs zigzag from one ear of the braid to the other ear, and in the case of the round striking braid, the X-ray non-transmissive yarn runs in a spiral pattern and It will be difficult. In particular, X-ray non-transmissive yarns arranged in a spiral like the case of a round braid are very difficult to come off.

In the above braid constituent thread replacement type,
Further, the X-ray impermeable yarn may be heat-fused to the fabric.
However, once melted and solidified, the X-ray impermeable yarn tends to become stiff, while the braid-constituting yarn replacement type can be made very difficult to come off by adjusting the yarn density and the like. , You don't need to heat bond.

In addition, the braid-constituting yarn-replacement type is simple to manufacture because it is sufficient to replace one yarn with an X-ray opaque yarn when weaving a fabric braid.

Further, in the present invention, the non-woven fabric can be housed in the cylinder of the round punched braid.

The cloth for an endoscope, which is made of a braided fabric as described above, can be made to have an excellent liquid absorbing property. Further, as described above, the non-woven fabric is stored in the cylinder of the round punched braid. As a result, the liquid absorbency can be further improved. Further, the non-woven fabric may contain super absorbent polymer fibers, which further improves the liquid absorbability.

In addition, it is more preferable to use yarns of super absorbent polymer fibers for at least a part of the yarns constituting the braid, which can further improve the liquid absorbability.

[0030]

BEST MODE FOR CARRYING OUT THE INVENTION <First Embodiment> FIG. 1 is a front view showing a cloth 10 for an endoscope according to a first embodiment of the present invention.

The cloth A of the endoscopic cloth 10 is made of yarn 11
(11a, 11b) is composed of a flat striking structure that runs obliquely with respect to the longitudinal direction (direction of arrow L). The number of threads of the cloth (flat braid) A was 33 / cm, the basis weight was 300 g / m ² , and the braid structure was a two-ply structure.
The yarn 11 is a single yarn made of rayon (thickness of single yarn: 300d
It is a drawing yarn using two tex). Further, the marker thread (X-ray non-transmissive thread) 12 is a multifilament in which barium sulfate is kneaded in polypropylene resin, and the marker thread 12 has the texture of the flat braid along the longitudinal direction (arrow L direction). One short side end S as it traverses
To the other short side end portion (not shown), and is straightly inserted and heat-bonded to the thread 11.

As can be seen from FIG. 1, the endoscope fabric 10
The yarn 11 changes its direction from leftward inclination to rightward inclination (or rightward inclination to leftward inclination) in the manner of making a U-turn at the long side end E. As described above, the long side end E of the flat braid does not have the cut end of the fabric A, and therefore the yarn cannot be unwound from the long side end E.

At the short side end S, the cut end of the fabric A appears, but the thread 11 of the fabric A runs toward the opposite short side end (downward in FIG. 1). Since the adjacent yarns 11 are interlaced with each other, even if the yarns 11 may be loosened in the vicinity of the short side end portion S, the yarns 11 do not fall out.

In addition, since the cloth for endoscope of the first embodiment has a large fabric weight as described above, it is excellent in liquid absorption. In addition, since the number of threads is not too high, it maintains sufficient flexibility.

The marker thread 12 is the thread 1 which runs diagonally to the right.
Since it is sandwiched between 1a and 11b which runs diagonally to the left, it is difficult to come off, and because it is heat-sealed to the yarn 11, it hardly comes off. The marker yarn 12 is arranged over the entire length in the longitudinal direction of the endoscopic fabric 10 and is sufficiently long, so that the marker yarn 12 can be satisfactorily recognized by X-ray imaging (X-ray imaging).

<Second Embodiment> FIG. 2 shows a second embodiment of the present invention.
It is a front view which shows the cloth 20 for endoscopes which concerns on.

In the same manner as in the first embodiment, the fabric B of the endoscopic fabric 20 has the yarn 11 (rayon single yarn (single yarn thickness: 300 d tex) two aligned yarns) in the longitudinal direction ( It is composed of a flat striking braid that runs diagonally with respect to the direction of arrow L). The number of threads of this fabric (flat braid) B is 24 / cm
The basis weight is 200 g / m ² , and the braided structure is a double set structure.

Marker thread (X-ray non-transmissive thread) 22
Is a multifilament in which barium sulfate is kneaded into polypropylene resin. One of the yarns 11 constituting the flat braid (fabric B) is the marker yarn 2
2, the marker yarns 22 are arranged in a zigzag pattern along the texture of the flat braid, as shown in FIG. 2, and one short side end S to the other short side end (not shown). ) Has been reached.

Although the marker yarn 22 is not heat-sealed to the yarn 11, it is difficult to pull out because it is arranged in zigzag as described above, and the integrity with the fabric B is maintained. Since the marker thread 22 is arranged sufficiently long, it can be satisfactorily recognized by X-ray contrast (X-ray imaging). In addition, since the marker yarn 22 is a multifilament, it is softer than a monofilament having the same thickness, and is not melted and solidified, so that good flexibility is maintained.

In the second embodiment, as in the first embodiment,
The long side end portion E of the endoscope fabric 20 has no cut end portion of the cloth, and therefore the yarn is not loosened from the long side end portion E. Further, at the short side end S, the respective yarns 11 of the fabric B run toward the opposite short side end S side (downward in FIG. 2),
Since the yarns 11 and the other yarns 11 are interlaced with each other, even if the yarns 11 can be loosened in the vicinity of the short side end portion S, the yarns 11 do not fall out.

In addition, the fabric 20 for an endoscope according to the second embodiment has a large basis weight as described above, and is therefore excellent in liquid absorption.
Also, since the number of yarn hits is not too high, it shows good flexibility.

<Third Embodiment> FIG. 3 shows a third embodiment of the present invention.
It is a perspective view which shows the cloth 30 for endoscopes which concerns on.

The cloth C of the endoscopic cloth 30 is composed of a round-braided braid using four drawn yarns (thickness of single yarn: 300 d tex) made of rayon, and the braid structure is It is a group of 1 organization. The number of threads of this cloth (round braid) C is 20 /
In cm, the basis weight is 180 g / m ² . The yarns (drawing and aligning yarns) that form the fabric (circular braid) C run in a spiral pattern in which the first group of yarns rotate clockwise and the second group of yarns rotate in a counterclockwise direction. And the second group of yarns are interlaced (that is, woven) to form a fabric.

The marker thread (X-ray non-transmissive thread) 32 is a multifilament in which barium sulfate is kneaded in polypropylene resin and is a thread (aligning thread) constituting the round braid (fabric C). One of them is replaced with the marker thread 32. Therefore, the marker thread 32 is arranged in a spiral shape along the texture of the tubular round braid. The marker thread 32 is not fused.

Since the endoscope cloth 30 has a tubular shape,
There is no cut end of the fabric on the long side, so the thread cannot be loosened from the long side. Further, the short side end portions S ₁ and S ₂ are cut points of the cloth C, but the yarn of the cloth C goes toward the opposite short side end portion side (center side) (toward the arrow D direction), and Since the yarns of the group and the yarns of the second group are interlaced with each other, the yarns hardly fall out.

In addition, the fabric 30 for an endoscope according to the third embodiment has a large basis weight as described above and is in the shape of a bag. Furthermore, since the number of yarn hits is not too high, good flexibility is exhibited.

Further, since the marker thread 32 is spirally arranged in the longitudinal axis direction of the cloth, it is extremely difficult to pull out. In addition, since the short side end S ₁ is arranged to be sufficiently long from the other short side end S ₂ , it can be satisfactorily recognized by X-ray imaging (X-ray imaging). In addition, since the marker thread 32 is a multifilament, it is softer than a monofilament having the same thickness, and is not melted and solidified, so that good flexibility is maintained.

<Fourth Embodiment> FIG. 4 shows a fourth embodiment of the present invention.
It is a perspective view which shows the cloth 40 for endoscopes which concerns on. The same components as those in FIG. 3 are designated by the same reference numerals to avoid redundant description.

The endoscopic cloth 40 of the fourth embodiment is arranged in the cylinder of the endoscopic cloth 30 of the third embodiment, that is, in the cylinder of the tubular cloth C made of the round braid. The rolled non-woven fabric 43 is stored.

As described above, since the nonwoven fabric 43 is stored in the fourth embodiment, the liquid absorbing property is further improved as compared with the third embodiment. However, the endoscope fabric 40 of the fourth embodiment tends to be slightly hardened by the nonwoven fabric 43, and the endoscope fabric 30 of the third embodiment is superior from the viewpoint of flexibility. Therefore, it is advisable to select it appropriately according to the place of use.

In the fourth embodiment, as in the third embodiment, the marker yarn 32 is sufficiently long so that the visibility is good, and the yarn does not almost fall out of the cloth C. In addition, since the cloth accommodated in the cloth (circular braid) C is also the non-woven fabric 43, the yarn is hardly dropped from the non-woven fabric 43.

As described above, the cloth for endoscopes according to the present invention has been specifically described with reference to the drawings showing examples, but the present invention is not limited to the illustrated examples.
It is also possible to carry out appropriate modifications within a range that is compatible with the above gist, and all of them are included in the technical scope of the present invention.

For example, a yarn having a super absorbent polymer fiber may be used as a part of the yarn constituting the flat braid or the round braid in the above-mentioned first to third embodiments, or the non-woven fabric 43 of the fourth embodiment. A nonwoven fabric containing super absorbent polymer fibers may be used.

In the above embodiment, the X-ray non-transmissive yarn is a thermoplastic resin containing an X-ray non-transmissive substance (for example, barium). If the composition is not heat-sealed, the thermoplastic resin does not necessarily have to be used.

[0055]

EFFECTS OF THE INVENTION Since the cloth for the endoscope according to the present invention is composed of a braid, the yarn is hardly dropped and the liquid absorbency is excellent. Further, an X-ray opaque yarn is arranged so as to be inserted in the longitudinal direction of the braid, and an X-ray opaque yarn is arranged in place of at least one of the yarns constituting the braid. The X-ray non-transmissive yarn is hard to come off from the cloth for an endoscope. The presence of the X-ray non-transmissive yarn makes it easy to find the endoscopic fabric by X-ray contrast.

[Brief description of drawings]

FIG. 1 is a front view showing a cloth for an endoscope according to a first embodiment of the present invention.

FIG. 2 is a front view showing a cloth for an endoscope according to a second embodiment of the present invention.

FIG. 3 is a perspective view showing a cloth for an endoscope according to a third embodiment of the present invention.

FIG. 4 is a perspective view showing a cloth for an endoscope according to a fourth embodiment of the present invention.

[Explanation of symbols]

10, 20, 30, 40 Endoscopic cloth 11 Yarn 12, 22, 32 Marker yarn 43 Nonwoven fabric A, B, C Fabric E Long-side end S, S ₁ , S ₂ Short-side end

Claims (6)

[Claims] 1. A cloth for an endoscope, which is made of a cloth having a non-X-ray permeable yarn, wherein the cloth is made of a braid. 2. The cloth for an endoscope according to claim 1, wherein the X-ray non-transmissive yarn is inserted into a texture of the braid along a longitudinal direction of the braid. 3. The endoscope cloth according to claim 1, wherein the X-ray non-transmissive yarn is heat-sealed to the braid. 4. At least one of the yarns constituting the braid
The cloth for endoscopes according to claim 1, wherein the X-ray non-transmissive yarn is used as a book. 5. The cloth for an endoscope according to claim 1, wherein the braid is a round braid or a flat braid. 6. The cloth for an endoscope according to claim 5, wherein a non-woven fabric is housed in the cylinder of the round punched braid.