KR20150090170A - Surgical thread, surgical small pad and blood vessel tape that use the thread - Google Patents

Abstract

The present invention provides a surgical small pad, a blood vessel tape, and a thread used therein, which can reduce the possibility of damage to the organ, and maintain the absorbency and flexibility. The thread according to the present invention is characterized in that a plurality of strands of covered yarn formed by winding a covering fiber on a core yarn made of a filament containing an X-ray opaque substance is formed as a braid. The core yarns can be constituted by bundling a plurality of filaments made of polypropylene, and the covering fibers can be composed of polyethylene terephthalate. The small surgical pad according to the present invention has an absorbent pad body in which a plurality of nonwoven fabrics are laminated, and the above-mentioned thread is welded to the pad body.

Description

TECHNICAL FIELD [0001] The present invention relates to a surgical thread, a surgical small pad using the thread, and a blood vessel tape. [0002] Surgical thread,

The present invention relates to a thread for use in, for example, brain surgery or orthopedic surgery, a surgical small pad and a blood vessel tape using the thread, and is capable of detecting the presence in the body by X-ray imaging, A small pad for surgery, and a blood vessel tape which can contribute to prevention of (remnants).

During surgery, many gauzes are used for the purpose of inhibiting bleeding, absorbing body fluids or saline, and protecting the organs from abrasions, drying, and contamination. If these gauzes are left in the body, for example, they cause not only a variety of body troubles such as pain, discomfort or fever, but also adverse effects on not only the organ but also adjacent organs, , Digestive system, circulatory system, respiratory system, brain / nervous system, skeletal system, etc., and sometimes cause infectious diseases. It may also cause immunodeficiency. Since there is such a concern, it is indispensable to take all the gauze out of the body at the end of the operation.

Therefore, in surgery, gauze made by mixing one slice constituting the gauze in place of the projection lens is sometimes used, and an X-ray image (rental photographing) is performed before closing the surgical site of the operation end, It is often the case that the presence or absence of the gauze residue is checked and all the detected gauzes are removed.

As the projection lens, polypropylene, a multifilament in which barium sulfate is overlaid on a polystyrene resin, or a filament body in which barium sulfate is overlaid on a polyvinyl chloride or a silicone resin is used (for example, see Patent Document 1). These resin-based materials are insufficient in absorbability and are not stained with blood. Therefore, even if the gauze body is tinted with blood, for example, it is advantageous to visually recognize the gauze consonant with blue color. What can not be seen with the naked eye can be detected by X-ray imaging.

Patent Document 2 discloses an X-ray projection built-in gauze for preventing the fibers of gauze from loosening and leaving the X-ray image. Specifically, the X-ray projection including the thermoplastic fiber is welded and fixed to the woven fabric or nonwoven fabric to prevent omission of the X-ray imaging yarn. There is also a method of sandwiching an X-ray projection between a nonwoven fabric and a nonwoven fabric, sandwiching the nonwoven fabric with a nonwoven fabric, sandwiching the X-ray projection with a water pressure such as a water jet, and bonding the nonwoven fabric.

Patent Document 3 discloses an absorbent woven fabric to which a locator string is attached. This yarn is constituted by winding five yarns of monofilaments (X-ray projections) in a bundled state in a spiral shape (Patent Document 3, FIG. 3). Further, it is described that it is preferable to bond the monofilament with heat or the like.

Japanese Patent Application Laid-Open No. 2003-319966 Japanese Patent Application Laid-Open No. 2005-177034 U.S. Patent No. 5112325

However, in the X-ray tube built-in gauze of Patent Document 2, since the X-ray radiograph is welded from one end to the other end of the gauze, the proportion of the welded portion occupying the entire gauze is increased. Since this welded portion has rigidity, the gauze of Patent Document 2 is very likely to cause damage to organs. Further, in the method of inserting the X-ray projection with the water pressure of the water jet, the insertion of the X-ray imaging yarn is strengthened by using a considerable water pressure for the purpose of preventing omission of the X-ray imaging yarn, The thickness becomes remarkably thin, so that the absorbency and flexibility inherent in the nonwoven fabric are reduced. Further, it is considered that the positioning chamber of Patent Document 3 lacks flexibility because a plurality of (five strands in the embodiment) monofilaments are bound by heat or the like.

In addition, even in the case of a vascular tape used for identifying a blood vessel or the like during an operation, pulling a blood vessel, temporarily holding tissue, or the like, the same conditions as those of the surgical small pad are available.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a surgical small pad, a blood vessel tape, and a thread used therefor, which can lower the risk of damage to organs and maintain absorbability and flexibility do.

The yarn in accordance with the present invention comprises a plurality of strands of covered yarn formed by winding a covering fiber on a core yarn made of a filament containing an X-ray opaque substance as a braid.

In the yarn of the present invention, it is preferable that the melting point difference between the filament and the covering fiber is 30 to 200 deg.

In the yarn of the present invention, as the core yarn, a multifilament formed by bundling a plurality of filaments can be used.

In the yarn of the present invention, it is preferable that the multifilament is constituted by bundling 2 to 50 filaments, and the multifilament has a fineness of 100 to 1500 dtex.

In the yarn of the present invention, a monofilament having a fineness of 30 to 750 dtex may be used as the core yarn.

In the yarn of the present invention, as the filament, one containing at least one selected from the group consisting of polyethylene, polypropylene, polyvinyl chloride and polystyrene can be used.

In the yarn of the present invention, as the covering fiber, one containing at least one selected from polyethylene terephthalate, nylon and polybutylene terephthalate may be used.

The small surgical pad according to the present invention is characterized in that it comprises a single absorbent pad made of a single nonwoven fabric or a plurality of nonwoven fabrics laminated on one another or a single or multiple nonwoven fabrics and one or a plurality of woven fabrics laminated And a main body, wherein the thread is joined to the pad body.

The small pad for surgery of the present invention is characterized in that the absorbent pad body is formed by sewing the plurality of nonwoven fabrics with a sewing thread made of synthetic fibers, natural fibers, regenerated fibers or semi-synthetic fibers, And is welded to all or a part of the sewing thread.

In the small surgical pad of the present invention, a part of the seal may be sealed and joined to the absorbent pad body.

In the surgical small pad of the present invention, a part of the thread may be bonded to the absorbent pad body by applying an adhesive.

The vascular tape according to the present invention is based on the use of the above thread.

In the vascular tape of the present invention, it is preferable that the thread is a plain weave knitted with an odd-numbered thread.

According to the thread of the present invention, since the plurality of strands of the covered yarn formed by winding the covering fibers on the core yarn containing the X-ray opaque substance are formed as braids, rigidity can be suppressed and the bending rigidity can be lowered , It is possible to have high flexibility.

According to the surgical small pad of the present invention, by employing the thread as a drawer, it is possible to prevent the drawer from being damaged by an organ or the like. In addition, since the drawer has high flexibility, the flexibility of the portion (pad portion) to which the drawer is attached is not impaired.

Further, since it is not necessary to sandwich the X-ray projection onto the pad as in the conventional art, the pad is not hardened by the X-ray projection. Therefore, the surgical small pad of the present invention is excellent in long-term protection because both the attachment portion and the distal end portion of the pull-out yarn have flexibility. It is also possible to use the small-sized surgical pad having such long-term protective properties as a means for preventing drying of the organ.

In addition, by containing an X-ray opaque substance in the core yarn of the drawn yarn, the function of the X-ray image can be imparted to the drawn yarn. As a result, it is not necessary to separately install the X-ray imaging device and the drawing yarn.

According to the blood vessel tape of the present invention, it is possible to prevent the blood vessel tape from being damaged in an organ or the like while having the X-ray imaging function by using the above-mentioned thread. Further, in the blood vessel tape, since the thread to be used is a braid, it can sufficiently combine strength and flexibility. Further, in the blood vessel tape of the present invention, the yarn is made plain and knitted in an odd-numbered yarn, so that the usability can be improved.

1 is a perspective view showing a small-sized surgical pad according to the present invention.
Figure 2 is a photograph of the drawn yarn attached to the absorbent pad body.
3 is a perspective view showing the covered yarn.
4 (a) to 4 (c) are explanatory diagrams showing the method of manufacturing the braid.
5 is a photograph showing the drawn yarn of Comparative Example 1. Fig.
6 is a graph showing the results of the bending stiffness measurement test.
Fig. 7 is an X-ray CT image of 3D data taken from the welding surface side (the surface of the paper surface of Fig. 1) taken on the side of the nonwoven fabric surface Ray CT image relating to the 3D data photographed from the X-ray CT image.
Fig. 8 is an X-ray CT image relating to 3D data photographed from the welding face side and Fig. 8 (b) is an X-ray CT image relating to 3D data photographed from the nonwoven fabric face side.
9 is an X-ray CT image of 3D data photographed from a welding face side, and FIG. 9 (b) is an X-ray CT image of 3D data photographed from the nonwoven fabric side.
Fig. 10 is an X-ray CT image of 3D data photographed from a welding surface side, and Fig. 10 (b) is an X-ray CT image of 3D data photographed from the nonwoven fabric side.
11 is a graph showing the results of a tensile test.
Fig. 12 (a) is a photograph showing the state of the drawn yarn after the tensile test in Example 2, Fig. 12 (b) is a photograph showing the same state in Example 3, to be.
13 is a photograph showing a state of the pressure distribution test.
Figs. 14 (a) to 14 (h) are photographs showing a small-sized surgical pad used in Example 5 and Comparative Examples 5 to 11, respectively.
Figs. 15A and 15B are pressure distribution diagrams of Example 5, Figs. 15C and 15D are pressure distribution diagrams of Comparative Example 5, and Figs. 15E and 15F are pressure distribution diagrams of Comparative Example 6 .
Figs. 16A and 16B are pressure distribution diagrams of Comparative Example 7, Figs. 16A and 18B are pressure distribution diagrams of Comparative Example 8, and Figs. 16A and 18B are pressure distribution diagrams of Comparative Example 9 .
17 (a) and 17 (b) are pressure distribution diagrams of Comparative Example 10, and (c) are pressure distribution diagrams of Comparative Example 11. FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

1, the small-sized surgical pad 10 according to the present invention has a structure in which a drawer 3 is attached to an absorbent pad main body 1 in which a plurality of nonwoven fabrics made of cupra-rayon are laminated, will be. 1, the absorbent pad body 1 is composed of a plurality of nonwoven fabrics, but it may also be composed of a single nonwoven fabric. The absorbent pad body 1 may also be constituted by laminating one or plural nonwoven fabrics and one or plural woven fabrics. 1 shows that the lead yarn 3 is adhered by welding, it may be performed by other bonding methods such as sealing or application of an adhesive instead of the above welding.

The drawn yarn 3 is for taking out the absorbent pad body 1 from the body cavity to the outside of the body cavity, thereby preventing accidental accident. The number of laminated layers of the nonwoven fabric can be set arbitrarily, for example, 2 to 6 sheets. By sewing the plurality of nonwoven fabrics with the sewing thread 2 in the longitudinal direction of the nonwoven fabric, the absorbent pad body 1 in which the nonwoven fabric is laminated can be constituted. The thickness of the absorbent pad body 1 at normal times is 0.5 to 1.5 mm, and the thickness at the time of wetting is 0.3 to 1.0 mm.

As the sewing thread 2, synthetic fibers, natural fibers, regenerated fibers, or semi-synthetic fibers can be used. Examples of the synthetic fibers include PET (polyethylene terephthalate), PP (polypropylene) and nylon. Examples of the natural fibers include cotton and hemp. Examples of the regenerated fibers include rayon, viscose rayon and cupra rayon And examples of semisynthetic fibers include acetate and the like.

It is preferable that the plurality of nonwoven fabrics are laminated by being pressed against each other by a needle punch. The flexibility and the absorbency of the whole of the absorbent pad body can be ensured and the possibility of peeling off each nonwoven fabric is lower than that of the pad compressed and formed by water jet.

The size of the absorbent pad body 1 is, for example, 5 mm to 30 mm in width and 5 mm to 60 mm in length, and the small surgical pad 10 according to the present invention is particularly useful for a surgical operation such as brain surgery or orthopedic surgery The advantages of the present invention can be exhibited to the maximum by using it in the operation for the fine portion, but the size is not limited to the above, and thus the application site is not limited.

It is preferable that the surface of the absorbent pad body 1 opposite to the surface to which the drawing yarn 3 is attached is made to be the absorbing side. The absorptive pad main body 1 can be kept highly absorbent and the flexibility of the absorbent pad main body 1 can be maintained at a high level since there is no lead yarn 3 on the opposite side.

When the drawn yarn 3 is attached by welding, it is preferable that a part of the drawn yarn 3 is welded to all or a part of the sewing thread 2. [ As described later in detail, the PP yarn can be used for the drawn yarn 3, and the filaments are melted and adhered to the sewing yarn 2 by welding, so that it is difficult for the yarn slack to occur. 1, the length L of the portion to which the lead yarn 3 is welded is preferably 1 to 10 mm with respect to the one end of the absorbent pad body 1, more preferably 3 to 10 mm Do. In order to secure the flexibility of the absorbent pad body 1 by reducing the welded area of the drawn yarn 3 within a range in which the threaded-out yarn 3 can be prevented from being disengaged. In addition, even when the drawn yarn 3 is sewn, it is preferable that the length of the sealed portion is made equal to the length L.

Next, the outgoing yarn 3 attached to the absorbent pad body 1 of the present invention will be described in detail.

As the drawn yarn 3, a braid as shown in Fig. 2 is used. This braid can be formed by, for example, preparing eight covered strands 4 shown in Fig. 3 and using the method described in Fig. Also, the use of eight strands of a braid is generally referred to as eight strands. The method of manufacturing the braid in Fig. 4 is an example, and is not limited to this, and may be formed by other known manufacturing methods.

3, the covered yarn 4 is wound on a core yarn 5 (300 dtex) made of a poly filament bundled with, for example, five strands of a PP filament into which an X-ray opaque substance (barium sulfate, etc.) And the to-be-copied 6 made of PET can be wound as the taking fiber. As the multifilament, those having bundles of 2 to 50 filaments and having a fineness of 100 to 1,500 dtex can be used. When monofilament is used as the core 5, the fineness of the monofilament may be in the range of 30 to 750 dtex.

As an example of the filament, PP is taken and PET is taken as an example of the covering fiber. However, the melting point difference between the filament and the covering fiber (having a melting point higher than that of the filament) is not limited to 30 to 200 ° C . In addition, as described above, the core 5 may be composed of a monofilament instead of the multifilament. For example, the filament preferably includes at least one selected from the group consisting of polyethylene, polypropylene, polyvinyl chloride, and polystyrene. For example, the covering fiber preferably includes at least one selected from polyethylene terephthalate, nylon and polybutylene terephthalate.

In Fig. 4 (a), the eight strand covered yarns 4 are respectively 4a to 4h. The covered yarn 4e is passed over the covered yarn 4a, under the covered yarn 4b, above the covered yarn 4c, and under the covered yarn 4d in the state where the covered yarns 4a to 4d are arranged and arranged . The covered yarn 4f is disposed in parallel to the covered yarn 4e by passing under the covered yarn 4a, above the covered yarn 4b, under the covered yarn 4c, and above the covered yarn 4d in order.

The covered yarn 4g is disposed in parallel with the covered yarn 4f in the same manner as the covered yarn 4e. The covered yarn 4h is arranged in parallel with the covered yarn 4g in the same manner as the covered yarn 4f.

Next, the portion of the covered yarn 4d which does not overlap with any other covered yarn (the portion below the ground) is bent as shown in Fig. 4 (b) and crossed at the rear end as shown by the chain line in the drawing Together, on top of Covered Yarn 4e, below Covered Yarn 4f, above Covered Yarn 4g, and below Covered Yarn 4h.

4 (c), the portion of the covered yarn 4e which does not overlap with any other covered yarn (the portion below the ground) is bent and crossed at the rear end as shown by a chain line in the drawing , Above the covered yarn 4c, below the covered yarn 4b, above the covered yarn 4a, and below the covered yarn 4d. Hereinafter, similarly, the work of FIGS. 4 (b) and 4 (c) is repeated to complete the braid.

According to the present invention, by forming the drawn yarn 3 with the plurality of covered yarns 4 as a braid, the drawn yarn 3 becomes very elastic and has flexibility. Therefore, it is possible to prevent the drawn yarn 3 from being damaged in an organ or the like. In addition, by containing the X-ray opaque substance in the core 5 of the drawn yarn 3, the function of the X-ray image can be imparted to the drawn yarn 3. [ Thereby, it is unnecessary to provide the X-ray projection separately from the drawing yarn 3. [

Further, in the gauze including the X-ray contrasting yarn of the above-described Patent Document 2, since the X-ray radiating yarn is welded from one end to the other end of the gauze, the proportion of the welded portion occupying the entire gauze becomes large, In the present invention, the lead yarn 3 is fixed to a small area of the absorbent pad body 1 by welding or sealing so as to prevent the pullout yarn 3 from slipping out, It is possible to secure the elasticity of Therefore, it is possible to prevent the pad main body 1 from being damaged by an organ or the like.

Further, by forming the drawn yarn 3 with the plurality of covered yarns 4 wound with the PET-made covered yarn 6 as a braid, 20 to 40 filaments of the PP filaments are bundled, The amount of PET per cross section can be made larger than that of the conventional drawing yarn in which the copying is wound. Therefore, the strength of the drawn yarn 3 becomes strong and it is difficult to break.

In the above, the drawing thread 3 of the present invention is used for a surgical small pad. However, the present invention is not limited to this, and it is also possible to use the drawing thread 3 when a target organ or an external target (an organ in the vicinity of the target) It can also be applied to pressure vessels and the like.

Although the present invention has been described in detail with reference to the following examples, it should be understood that the present invention is not limited to the above-described embodiments, It is of course possible to carry out the present invention by appropriately modifying them, all of which are included in the technical scope of the present invention.

Example

As a test for confirming the flexibility of the drawn yarn of the present invention, a bending stiffness measurement test and a tensile test were conducted. Further, in order to confirm the welded state of the drawn yarn before the tensile test, Examples 2 and 4 and Comparative Examples 2 and 4 to be described later were subjected to X-ray CT photographing.

(1) Bending stiffness measurement test

A test was performed to measure the bending rigidity of the drawn yarn made of the braid (Example 1). As the drawn yarn of Comparative Example 1, an X-ray projection image (a yarn made of PET yarn was wound around a multifilament (3800 dtex) formed by bundling 40 filaments) as shown in the photograph of Fig. 5 was used.

In the bending stiffness measurement test, the drawn yarn was deformed to a maximum curvature at a constant speed, and the bending rigidity therebetween was measured. Further, the higher the numerical value of the bending stiffness, the harder the thread becomes. The test conditions are as follows.

Test equipment: Automatic net bending tester (KESFB2-AUTO-A)

Clamp width: 1cm

Number of measurements: 5

Condition: wet state (immersed in purified water for 30 minutes to wet)

The test results are shown in Fig. 6, the average value of bending stiffness in Comparative Example 1 was 0.1045 gf · cm 2 / cm, but the average value of bending rigidity in Example 1 was 0.0536 gf · cm 2 / cm, which is about 1/2 of Comparative Example 1. From this result, it was confirmed that the drawn yarn of the present invention has high flexibility.

(2) Tensile test and X-ray CT

A tensile test was conducted to measure the weld strength of the drawn yarn of the present invention. In the above test, the tensile strength was measured as the welding strength. The test conditions were as follows.

Tester: Constant-rate tensile testing machine

Tensile speed: 100 mm / min

Finger distance: 15 cm

Number of measurements: 5

Condition: wet state (immersed in purified water for 30 minutes to wet)

In each of the Examples and Comparative Examples, a tensile test was conducted using the following pads. The imaging apparatus used for the X-ray CT imaging in Examples 2 and 4 and Comparative Examples 2 and 4 was a TOSCANER-32300 micro FPD (manufactured by Toshiba IT Control System Co., Ltd.), and the tube voltage was 160 kV, the tube current was 80 μA, The output was set to 12.8W.

(2-1) Example 2

Six pieces of nonwoven fabrics (cupra rayon) were sewn by PET yarn as a sewing thread, and X-ray CT images were taken on the pads on which the lead yarn made of braid was adhered on the PET yarn. Fig. 7A is an X-ray CT image of 3D data taken from a welding surface side (the surface of the paper surface of Fig. 1), and Fig. 7B is an X- Ray CT image relating to 3D data. In Fig. 7 (b), the fine spots indicate dissolution in the nonwoven fabric. The same applies to the X-ray CT images shown in Figs. 8 to 10 below.

Further, a tensile test was conducted using the pad.

(2-2) Example 3

Six nonwoven fabrics were sewn by a cotton yarn, and a tensile test was conducted using a pad on which the drawn yarn made of a braid was adhered on the cotton yarn.

(2-3) Example 4

Six pads of non-woven fabric were not sewn, and a pad made of a braid was attached to the non-woven fabric of the uppermost layer, and X-ray CT images were taken. An X-ray CT image is shown in Figs. 8 (a) and 8 (b).

Further, a tensile test was conducted using the pad.

(2-4) Comparative Example 2

Six PET nonwoven fabrics were sewn by PET yarn, and X-ray CT images were taken on the PET yarn to which the drawing yarn made of the same X-ray projections as in Comparative Example 1 (Fig. 5) Respectively. An X-ray CT image is shown in Figs. 9 (a) and 9 (b).

Further, a tensile test was conducted using the pad.

(2-5) Comparative Example 3

Six non-woven fabrics were sewn by a cotton yarn, and a tensile test was carried out on the cotton yarn using pads each having a drawn yarn made of the same X-ray image as that of Comparative Example 1 bonded thereto.

(2-6) Comparative Example 4

X-ray CT photographing was performed on the pads on which the lead yarn made of the same X-ray image as that of Comparative Example 1 was welded to the nonwoven fabric of the uppermost layer without sewing the six nonwoven fabrics. X-ray CT images are shown in Figs. 10 (a) and 10 (b).

Further, a tensile test was conducted using the pad.

(2-7) Evaluation of X-ray CT images

In Comparative Example 2 using the conventional X-ray projection as the drawn yarn, it was confirmed that the drawn yarn was almost uniformly dissolved in the portion other than the PET stitch, as shown in Fig. 9 (b).

On the other hand, in Example 2 using a drawn yarn made of a braid, as shown in Fig. 7 (b), the dissolving amount is also small in parts other than the PET stitches. This is presumably because the PP filament is completely dissolved in the nonwoven fabric and part or all of the high-melting-point PET-based photocopy is still not dissolved and remains. In addition to this, it is considered that the drawn yarn of the drawn yarn of Example 2 is higher than that of Comparative Example 2, although the drawing yarn is described later by being combined with the PET sewing yarn.

In Comparative Example 4 using a conventional X-ray projection as the drawn yarn, it was confirmed that the drawn yarn was uniformly dissolved as shown in Fig. 10 (b).

On the other hand, in Example 4 using a drawn yarn made of a braid, as shown in Fig. 8 (b), the dissolution amount of the drawn yarn was smaller than that of Comparative Example 4 (Fig. 10 .

(2-8) Results of tensile test

The results of each test are shown in Fig. In Fig. 11, in Example 2, the average value of the tensile strength was 1006 gf and the average value of the tensile strength was 530 gf. Further, in Example 3, the average value of the tensile strength was 888 gf, which was much higher than that of Comparative Example 3 in which the average value of the tensile strength was 665 gf. As a result, it was confirmed that the outgoing yarn made of the braid of the present invention was more resistant to the tensile force than the conventional X-ray projected image.

In comparison between Examples 2 and 3, it was found that it is preferable to deposit the drawn yarn on the PET yarn in order to further increase the tensile strength. This is presumably because the PP filaments are completely dissolved in the nonwoven fabric by welding and part or all of the high-melting-point PET-based radiation, which is higher than PP, is not dissolved and remains. In addition, it was confirmed that in Example 2 in which sewing with a PET yarn was performed, the deviation in tensile strength was much smaller than in Example 3 in which sewing was performed with cotton yarn.

From the results of Example 4 and Comparative Example 4, it was found that the tensile strength of the pad obtained by bonding the drawn yarn without sewing the nonwoven fabric was close to that of the braid of the present invention and the conventional X-ray projection.

Figs. 12 (a) to 12 (c) show photographs after the tensile test in Examples 2 and 3 and Comparative Example 2, respectively. As can be seen from Fig. 12 (a), it was confirmed that although some of the sewing thread was broken, the drawn yarn was not broken. 12 (b), it was confirmed that although some of the nonwoven fabric was broken, the drawn yarn was not broken. 12 (c), since the content of PP in the X-ray contrast yarn is large and the content of PET is small, the amount of dissolved PP in the nonwoven fabric becomes excessive and the amount of remaining PET becomes small. Therefore, Resulting in the fracture of the X-ray image. From the above, it was confirmed that no breakage was caused in the drawn yarn of the present invention, either in the sewing by the PET yarn or in the sewing by the cotton yarn.

(3) Pressure distribution test

In order to verify the long-term protection property of the surgical small pad, a test was performed to measure the pressure distribution when pressure was applied to the pad. In the pressure distribution test, as shown in Fig. 13, a sensor sheet is placed on a rubber mat, and a pad wet with saline (0.9 w / v%) is loaded on the sensor sheet. The pressure distribution was examined by placing a weight (? 2.5 cm) of 50 gf / cm 2 on the pad in this state. A surface pressure distribution measuring system I-SCAN (manufactured by Nitta K.K.) was used for the pressure test.

In the sensor sheet, when a pressure is applied in a configuration in which a first film made of PET provided with silver electrodes arranged in the row direction and a second film made of PET arranged opposite to the column direction are disposed to face each other, The contact point between the electrodes becomes a sensing point, and the electric resistance value is changed. The silver electrode is coated with a pressure-sensitive conductive ink.

14A is a photograph showing a small pad for surgery (the same as FIG. 1) of Example 5, and FIGS. 14B to 14H are photographs showing small pads of Comparative Examples 5-11 to be. Table 1 shows the thickness of the small pads of Example 5 and Comparative Examples 5 to 11 in the wet state, the bonding method of the pads and the pad, and the X-ray contrast. With respect to the X-ray contrast of Table 1, the term " sandwiched between pads " means that the X-ray image is sandwiched between the pads, and " Which means that it is in a state of being.

15 (a) and 15 (b) are pressure distribution diagrams of Example 5, FIGS. 15 (c) and 15 (d) are pressure distribution diagrams of Comparative Example 5, 6 is a pressure distribution diagram of Example 6. Fig. 16 (a) and 16 (b) are pressure distribution diagrams of Comparative Example 7, FIGS. 16 (c) and 16 (d) are pressure distribution diagrams of Comparative Example 8, Is a pressure distribution diagram of Comparative Example 9. 17 (a) and 17 (b) are pressure distribution diagrams of Comparative Example 10, and Fig. 17 (c) is a pressure distribution diagram of Comparative Example 11. Fig. 15 to 17 show the pressure distribution when the pressure is applied to the central portion of the pad and the bonding portion of the figure shows the pressure distribution when the pressure is applied to the bonding portion between the pad and the outgoing yarn. In any of the above drawings, the unit of the pressure value is kgf / cm 2.

As shown in Figs. 15 (a) and 15 (b), it was confirmed that the pressure was uniformly distributed in the small pad of the present invention. Particularly, the pressure distribution in FIG. 15 (b) is uniform because the small pad of the present invention is considered to be the only one side (not penetrated like sewing) due to the welding between the drawing sheet and the pad. Further, since the small pad of the present invention is bulky, it is also conceivable that the steric hindrance of the welded portion of the drawn yarn is alleviated by the large volume of the pad. From the above, it is considered that the side of the small pad of the present invention opposite to the joint surface of the drawn yarn hardly gives a load to the organs.

On the other hand, for the small pad of Comparative Example 5, as shown in (c) and (d) of FIG. 15, a pressure concentrated region was confirmed as a horizontal line. It is considered that the pressure distribution is concentrated because the X-ray projection and drawing yarn sandwiched by the pad become steric hindrances.

As shown in Figs. 15 (e) and 15 (f), for the small pads of Comparative Example 6, no pressure concentrated region as in Comparative Example 5 was observed, but due to the structure of depositing the drawn pads and the pads, It was confirmed that a relatively high pressure distribution exists in the lower portion of Fig. 15 (f).

Subsequently, as shown in Figs. 16A and 16B, for the small pad of Comparative Example 7, a pressure concentrated region was confirmed in the same horizontal line shape as Comparative Example 5. It is considered that the thickness in the wet state of the pad is thin, and the X-ray projection projected on the pad and the drawn sheet sewn on the pad are steric hindrance, and the pressure distribution is concentrated.

Subsequently, for the small pad of Comparative Example 8, since the thickness in the wet state was thin, a pressure concentrated region was confirmed in the upper and lower portions in Fig. 16 (c). Further, since the drawn yarn is sewn to the pad, as shown in Fig. 16 (d), a horizontal line-shaped pressure concentrated region was confirmed at the joint portion.

Also in the small pad of Comparative Example 9, since the thickness in the wet state was thin, a pressure concentrated region was confirmed from the central portion to the upper portion in Fig. 16 (e). In addition, since the X-ray projection is fused in the horizontal direction and the drawn yarn is sewn to the pad (the suture thread is in the vertical direction), as shown in Fig. 16 (f) T-shaped).

17 (a), the pressure distribution in the far end portion of the small pad of Comparative Example 10 was higher than that of Comparative Example 9 It is shown that it is relaxed. However, since the X-ray projection is fused in the horizontal direction and the drawn yarn is sewn to the pad (the suture thread is in the vertical direction), as shown in Fig. 17 (b), the horizontal and vertical line- T-shaped).

Further, with respect to the small pad of Comparative Example 11, although the thickness in the wet state was large, two X-ray projections were applied to the pad, and the lead yarn was relatively stretched from one end side in the longitudinal direction of the pad to the other end side 17 (c), a substantially rectangular pressure concentrated region was confirmed.

In view of the above, when the surgical small pad of the present invention is used as a cushioning material during surgery, even if pressure is applied to the pad, the pressure distribution in the pad becomes uniform, I can confirm that it is low. Therefore, it has been proved that the small-sized surgical pad of the present invention is also excellent in long-term protective property.

Further, the blood vessel tape 20 (not shown) can be manufactured using the drawing yarn 3 of the present invention. Herein, the blood vessel tape is a surgical tape used for identifying vessels, tracing blood vessels, temporarily holding tissues, etc. during surgery such as cardiovascular surgery or thoracic surgery.

The drawn yarn 3 used for the vascular tape 20 is preferably a multifilament having a fineness of 300 dtex. The width of the blood vessel tape 20 is preferably 2 to 6 mm. The length of the blood vessel tape 20 is not particularly limited, since it may be set to a suitable length depending on the use.

According to the blood vessel tape 20, by using the outgoing yarn 3, it is possible to prevent the blood vessel tape from being damaged in an organ or the like while having an X-ray imaging function. Further, in the vascular tape 20, since the drawn yarn 3 to be used is a braid, it can sufficiently combine strength and flexibility.

It is preferable that the drawn yarn 3 is an annular piece woven in an even number of threads when used in the surgical small pad 10 and is preferably woven in an odd numbered yarn when used in the vascular tape 20. [

In the blood vessel tape 20, the outgoing yarn 3 is formed into a plain weave in an odd-numbered yarn, so that the usability can be improved.

This application claims the benefit of priority based on Japanese Patent Application No. 2012-259940 filed on November 28, The entire contents of the specification of Japanese Patent Application No. 2012-259940 filed on November 28, 2012 are hereby incorporated by reference.

The surgical thread of the present invention, the surgical small pad and the vascular tape using the thread can be effectively used for a variety of operations such as endoscopic surgery and laparotomy (including cardiovascular surgery and thoracic surgery).

1: absorbent pad body
2: sewing thread
3: Drawer (room)
4, 4a to 4h: Covered yarn
5: The governor
6: Photocopy (fiber for covering)
10: Small pad for surgery
20: Vascular tape

Claims (13)

The drawing pad 3 is a small pad for surgery in which the lead thread 3 is welded to one end of the one side of the absorbent pad body 1. The lead thread 3 is made of a filament made of filaments containing an X- The length L of the welded portion of the drawn yarn 3 is 1 to 10 mm to secure the flexibility of the absorbent pad body 1 Wherein the pad is a small-sized pad for surgery. The method according to claim 1,
And a length L of the welded portion is 3 to 10 mm. 3. The method according to claim 1 or 2,
And the side opposite to the side on which the drawn yarn (3) is welded is set as the absorbing side. 4. The method according to any one of claims 1 to 3,
Wherein the absorbent pad body (1) has one or more nonwoven fabrics or one or more fabrics laminated. 5. The method of claim 4,
Wherein the number of laminated sheets is 2 to 6 sheets. (Deletion by correction of 19) (Deletion by correction of 19) (Deletion by correction of 19) (Deletion by correction of 19) (Deletion by correction of 19) (Deletion by correction of 19) (Deletion by correction of 19) (Deletion by correction of 19)

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