JP2009089899A - Pad material for surgery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pad material for surgery capable of suppressing drying of the tissue of an incised part, extremely reducing the adhesion to the tissue and providing a contrast effect. <P>SOLUTION: This pad material is formed by sticking cellulose-based sponge sheet and an olefin resin sheet via thermo-bonding resin or by the thermal bonding of the olefin resin sheet; and is characterized in having an X-ray contrast member, wherein preferably, X-ray contrast agent is blended in the thermo-bonding resin as the X-ray contrast member. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a surgical pad material suitably used for protecting a body tissue during an open operation such as brain surgery.

  In open surgery, in general, articles such as gauze, non-woven fabric and sponge are used for the purpose of protecting and isolating tissues in the body and for absorbing blood or body fluids and keeping the surgical field clear. It has been. These items are removed from the body at the end of the surgery. However, these articles absorb blood and the like during surgery, and it is difficult to visually distinguish them from tissues in the body, so that they may remain in the body.

  For this reason, by sewing a thread on the end of the nonwoven fabric and extending the thread outside the surgical field, the nonwoven fabric can be easily collected from the body at the end of the surgery to prevent the residue (see Patent Document 1). ), Using a gauze provided with an X-ray contrast thread, and confirming the presence or absence of residual in the body by taking an X-ray image of the surgical site at the end of the surgery (see Patent Documents 2 and 3). ).

However, in the former case, the thread sewn on the end of the nonwoven fabric may interfere with the operation, and in the latter case, the gauze containing the residual prevention contrast yarn is hard and difficult to deform. It was difficult to use for the site.
Japanese Patent Laying-Open No. 2005-305044 (FIG. 1 on page 6) JP 2004-194994 A JP 2006-34507 A

  SUMMARY OF THE INVENTION An object of the present invention is to provide a surgical pad material that can suppress drying of an incisional tissue during surgery, has very little adhesion to the tissue, and provides a contrast effect.

  The surgical pad material of the present invention is characterized in that a cellulose-based sponge sheet and an olefin-based resin sheet are joined, and further includes an X-ray contrast member.

  According to a preferable aspect of the surgical pad material of the present invention, the cellulosic sponge sheet and the olefin resin sheet have a joining structure in which they are joined by a heat sealing resin.

  According to a preferred embodiment of the surgical pad material of the present invention, the heat-sealing resin is an olefin resin, and contains barium sulfate as an X-ray contrast member in a range of 10 wt% to 300 wt%. It is what you are doing.

  According to a preferred aspect of the surgical pad material of the present invention, the cellulosic sponge sheet and the olefin resin sheet have a bonding structure in which the olefin resin sheet is bonded by thermal fusion. .

  According to a preferred aspect of the surgical pad material of the present invention, an X-ray contrast yarn as an X-ray contrast member is arranged at a joint portion between the cellulose sponge sheet and the olefin resin sheet.

  According to a preferred aspect of the surgical pad material of the present invention, the olefin resin sheet is a nonwoven fabric made of an olefin resin film or olefin resin fibers.

  According to a preferred embodiment of the surgical pad material of the present invention, the olefin resin sheet has a slit.

  According to the surgical pad material of the invention according to claim 1, since the cellulose-based sponge sheet and the olefin-based resin sheet are bonded together, it achieves excellent liquid absorbency and at the same time, dries the incised tissue that is a necessary protection site. Furthermore, since the X-ray contrast member is provided, it is possible to easily check the unrecovered surgical pad material, thereby reducing the risk of residual in the body.

  According to the surgical pad material of the invention according to claim 2, since the cellulosic sponge sheet and the olefin resin sheet are joined by the heat-sealing resin, there is no fear of elution of the adhesive component or volatilization of the solvent. High safety.

  According to the surgical pad material of the invention according to claim 3, since the heat-sealing resin contains barium sulfate in the range of 10 to 300% by weight, the contrast portion can be made two-dimensional, so that high contrast is achieved. In addition to obtaining an effect, it is difficult to reduce the contrast effect even if the shape is arbitrary at the time of surgery, and the X-ray contrast member can be prevented from falling off.

  According to the surgical pad material of the invention according to claim 4, by using the olefin resin as the heat-sealing resin, the cellulosic sponge sheet and the olefin resin sheet can be firmly bonded without impairing the flexibility. it can.

  According to the surgical pad material of the invention according to claim 5, since the cellulosic sponge sheet and the olefin resin sheet are joined by thermal fusion of the olefin resin sheet, the olefin resin forming the sheet itself is obtained. Since it can penetrate | invade in a cellulose sponge sheet | seat and can be joined and integrated, it can join firmly.

  According to the surgical pad material of the invention according to claim 6, since the X-ray contrast yarn is arranged at the joint between the cellulose sponge sheet and the olefin resin sheet, the strength of the X-ray contrast yarn itself is not high. In contrast, cutting, dropping and the like are unlikely to occur, and a contrast effect that makes identification easier can be obtained.

  According to the surgical pad material of the invention according to claim 7, since the olefin resin film is used as the olefin resin sheet, it is possible to achieve excellent liquid absorbency and at the same time prevent drying of the incised tissue that is a protection site. it can.

  According to the surgical pad material of the invention according to claim 8, since the cellulose-based sponge sheet and the nonwoven fabric made of olefin-based resin fibers are joined, it achieves excellent liquid absorbency and at the same time appropriately absorbs moisture from the nonwoven fabric layer. It is possible to evaporate and moderately prevent the incision tissue that is a site requiring protection from being dried.

  According to the surgical pad material of the invention according to claim 9, since the olefin-based resin sheet has a slit, even if the cellulose-based sponge sheet undergoes dimensional change by absorbing liquid from the slit portion during use, Curling of the pad material can be prevented. Moreover, water can be appropriately evaporated from the slit portion.

  Hereinafter, the surgical pad material of the present invention will be described more specifically based on the drawings.

  FIG. 1 is a schematic perspective view for illustrating the configuration of a surgical pad material according to the present invention. In FIG. 1, a surgical pad material 1 has a configuration in which a cellulose sponge sheet 2 that is an absorbent member that absorbs body fluid, blood, and the like, and an olefin resin sheet 3 are bonded via a heat sealing resin 4. The heat fusion resin 4 is blended with an X-ray contrast agent (not shown) as an X-ray contrast member. The surgical pad material 1 of FIG. 1 is composed of a cellulose sponge sheet 2 on one side and an olefin resin sheet 3 on the other side.

  The cellulose sponge sheet used in the present invention may be a cellulose sponge produced by a conventional production process as it is. The cellulose sponge preferably contains cotton, flax, ramie, and pulp alone or in combination as reinforcing fibers. By including these reinforcing fibers, the strength of the sponge is increased and lint is suppressed. be able to.

  As a commercially available cellulose-based sponge sheet, Toray cellulose sponge (trade name, manufactured by Toray Fine Chemical Co., Ltd.) or the like can be used. This cellulose sponge raw material has a cross-section of about 100 mm × 170 mm × 600 mm, and has a bread-like shape (block shape) such as a rectangle, a hexagon and an ellipse, and these are sliced, cut or punched out. Thus, the cellulosic sponge sheet used in the surgical pad material of the present invention can be formed in a size.

  Cellulose-based sponge sheets have high liquid absorption performance and diffusion rate. Cellulose-based sponge sheets do not require special post-processing to give water-absorbing performance because cellulose itself has water-absorbing properties, increasing the number of post-processing steps and the safety of chemicals used for post-processing. It is possible to suppress the increase in costs associated with risk management. Cellulose-based sponge sheets are less likely to produce lint, have excellent handling properties during surgery, and have very low adhesion to the tissue at the incision, so that collection at the end of surgery is easy.

  The cellulosic sponge sheet constituting the surgical pad material of the present invention may be moistened with water or the like prior to use, but may be in a dry state or dry compressed.

  The cellulosic sponge sheet preferably has a thickness in the range of 0.5 to 5 mm, more preferably in the range of 0.5 to 3 mm when impregnated with physiological saline.

  The olefin resin sheet used in the present invention is a material that is easy to process and has high strength, chemical resistance and biological safety, and is flexible enough not to damage the affected area when it comes into contact with the affected area. From the point of being a certain material, it is suitable for a surgical pad material.

  As the olefin resin sheet, a nonwoven fabric made of an olefin resin film and olefin resin fibers is suitable. In addition, since the olefin resin constituting the olefin resin sheet has water repellency, the surface is hardly contaminated with blood or the like. For example, the olefin resin sheet itself has a color that can be easily distinguished from body tissues and blood. When colored, it is possible to easily collect the surgical pad material at the end of the surgery even visually.

  When the nonwoven fabric which consists of an olefin resin fiber is used as an olefin resin sheet, a water | moisture content can be appropriately evaporated from a nonwoven fabric layer, and the drying of the incision part tissue which is a protection required site | part can be prevented moderately.

  Polypropylene, polyethylene, or the like can be used as the olefin resin constituting the olefin resin sheet.

  The thickness of the olefin-based resin sheet is preferably in the range of 10 to 100 μm, and more preferably in the range of 10 to 50 μm, from the viewpoints of handleability and flexibility.

  In addition, the size of the olefin-based resin sheet is better when the thickness is about 3 cm × 10 cm, and when the thickness is about 5 mm square to 1 cm square, The thinner one is preferable from the point of followability.

  Further, when the olefin resin sheet is an olefin resin film, for example, a non-woven fabric may be melted and formed into a film as long as the sheet thickness is within the above range. When the cellulose sponge sheet contains physiological saline, the olefin resin sheet has an action of suppressing the evaporation of the physiological saline.

  Suitable olefin-based resin sheets include non-woven fabrics composed of olefin-based resin films and olefin-based resin fibers as described above. The role of the olefin-based resin sheet is to prevent dryness contained in the cellulose-based sponge sheet during operation. The main purpose is to maintain the physiological saline effect for a long time, and in that sense, an olefin resin film is preferably used. At that time, in order to appropriately control the amount of evaporation by evaporating moisture from the slits or holes in the olefin resin sheet layer, the form of nonwoven fabric made of olefin resin fibers or holes in advance It is possible to use a certain olefin resin sheet, or to make a hole in the olefin resin sheet after bonding.

  In the surgical pad material of the present invention, a cellulose sponge sheet and an olefin resin sheet are joined together. The size (size) of the surgical pad material of the present invention varies depending on the application, purpose or required characteristics, but is preferably 5 mm square to 3 cm × 10 cm, and the thickness is preferably impregnated with physiological saline. 1 mm to 5 mm. The cellulosic sponge sheet used is sliced to a thickness that matches the above thickness. The surgical pad material of the present invention may be obtained by cutting the cellulose sponge sheet and the olefin resin sheet into the above-mentioned size and joining them, forming a large cellulose sponge sheet and olefin resin sheet, You may cut | judge to the said size.

  The surgical pad material according to the present invention further comprises an X-ray contrast member. As the X-ray contrast member, for example, an X-ray contrast member obtained by kneading barium sulfate with an olefin resin or the like and spinning into a yarn shape as the X-ray contrast member, or using an olefin resin sheet or a cellulose sponge sheet as the X-ray contrast agent is used. It can be used by being applied to a heat-sealing resin.

  As the X-ray contrast yarn, for example, “Micropake” (trade name) manufactured by Acordis Specialty Fibers Ltd. can be used.

FIG. 2 is a schematic perspective view for illustrating another embodiment of the surgical pad material according to the present invention. When using an X-ray contrast thread, the X-ray contrast thread may be affixed to the surface of the surgical pad material, but as shown in FIG. 2, it is between the cellulosic sponge sheet 2 and the olefin resin sheet 3. When the X-ray contrast thread 5 is sandwiched between the joints, the X-ray contrast thread is not easily cut or dropped off, which is a preferable mode. Specifically, in FIG. 2, the X-ray contrast yarn 5 is sandwiched between the joining surfaces of the olefin-based resin sheet 3 and the heat-sealing resin 4. It can also be configured so as to be sandwiched between the joining surfaces. From the standpoint that the X-ray contrast yarn (usually black) can be visually recognized through the olefin resin sheet 3, the X-ray contrast yarn 5 is joined to the olefin resin sheet 3 and the heat-sealing resin 4 as shown in FIG. It is preferable to be sandwiched between.
The surgical pad material 1 shown in FIG. 2 is composed of a cellulose sponge sheet 2 on one side and an olefin resin sheet 3 on the other side.

  FIG. 3 is a schematic perspective view for illustrating another embodiment of the surgical pad material according to the present invention in which a slit is formed in the form of dividing the olefin-based resin film, and FIG. In such a surgical pad material, it is a schematic perspective view for illustrating and explaining another embodiment in which a slit is formed in a grid in the olefin resin film.

  In the present invention, as shown in FIGS. 3 and 4, the olefin resin sheet 3 bonded to the cellulose sponge sheet 2 preferably has slits (cuts) 6. Cellulose sponge sheets are bonded to olefin resin sheets in a dry state, but cellulose sponge sheets expand by about 10% when wet. Therefore, when wet after bonding with olefin resin sheets, the difference in expansion coefficient between the two sheets Therefore, curl is likely to occur in the surgical pad material. When slits (cuts) 6 are made in the olefin resin sheet, it is possible to follow the dimensional change of the cellulose sponge sheet, and curl of the surgical pad material can be suppressed. It is also possible to control the amount of evaporation of body fluid or the like by adjusting the width or interval of the slits (cuts) 6.

  The slit (cut) 6 may be inserted after the olefin resin sheet 3 is bonded to the cellulose sponge sheet, or a plurality of olefin resin sheets may be aligned and bonded. The slits (cuts) 6 may be inserted in such a manner as to divide the olefin resin sheet 3 as shown in FIG. 3, or the slits 6 may be formed in a grid pattern as shown in FIG.

Examples of the effect of the slit include the amount of evaporation and curling when impregnated with physiological saline, the followability (familiarity) of the pad material to the contact surface, and the like. When the surgical pad material has a small area, the slit shape as shown in FIG. 3 is sufficient. However, when a large-sized surgical pad material is used, if the portion to be contacted has a complicated shape, the slit shape shown in FIG. In some cases, a grid-like slit shape like this is effective. In addition, when a surgical pad material having a large area is cut and used depending on the situation at the time of surgery, one having no slit or a slit that is divided as shown in FIG. 3 is preferable.
The slit interval is preferably 1 to 10 mm from the viewpoint of followability to dimensional changes of the cellulosic sponge sheet.

  The surgical pad material 1 shown in FIGS. 3 and 4 is composed of a cellulose sponge sheet 2 on one side and an olefin resin sheet 3 on the other side.

  For bonding the cellulose-based sponge sheet 2 and the olefin-based resin sheet 3, a physical bonding method such as needle punching is used when an adhesive, a pressure-sensitive adhesive, or a pressure-sensitive adhesive tape is used. Both can be integrated. As a joining means, a method in which the olefin resin sheet itself is thermally fused to the cellulose sponge sheet by hot pressing or the like, or the cellulose sponge sheet 2 and the olefin resin sheet 3 are thermally bonded using the heat fusion resin 4. Methods and the like. In the case of using a physical joining method, there is no fear of elution of the adhesive component, volatilization of the solvent, etc., and there is stability to the chemical solution and high safety is obtained. From the point that the manufacturing process can be simplified and the adhesive strength can be improved, as described above, the method of heat-sealing the olefin resin sheet itself to the cellulose sponge sheet by hot pressing or the like, or the heat-sealing resin 4 It is preferable to use a method of thermally bonding using

  The melting point of the heat sealing resin is preferably 80 ° C. or higher. When the surgical pad material is heat sterilized by an autoclave or the like before use, it is preferable to use a resin having a high melting point. In applications that do not require heat sterilization, the temperature at the time of use is close to room temperature, so a general-purpose heat-fusion resin may be used. There are fewer restrictions on the range of use.

  Further, the melting point of the heat-sealing resin is preferably 160 ° C. or less, more preferably 150 ° C. or less in consideration of yellowing (carbonization) of the cellulosic sponge sheet.

  In addition, in the heat bonding with the heat-fusible resin or the olefin resin sheet itself, a part of the heat bonding resin or the olefin resin sheet appropriately enters the voids of the sponge of the cellulose sponge sheet, and the heat bonding resin. When the olefin resin sheet is cooled and solidified, the anchor effect is preferably maintained.

  On the other hand, in the heat bonding of the olefin resin sheet, it is preferable to use an olefin resin as the heat fusion resin because it can be easily bonded as long as the same material is bonded. Use of olefin resin makes it difficult for chemicals and body fluids to permeate, has affinity with olefin resin sheet, and is excellent in anchoring due to anchor effect without losing flexibility in adhesion to cellulose sponge sheet. Therefore, good bonding strength can be obtained.

  The heat-sealing resin can be used by applying a melted material, or a non-woven fabric or other sheet-like material is sandwiched between a cellulose sponge sheet and an olefin resin sheet, and softened and melted by heat. It can also be made to adhere.

  Further, if the heat resistance resin has high chemical resistance, pretreatment with a disinfectant solution or the like can be performed. Olefinic resins are biologically safe and resistant to alkalis, acids and other drugs.

  The olefin-based resin sheet and the heat-sealing resin may contain additives such as particles and an antistatic agent as necessary, and other components may be copolymerized.

  If the heat-sealable resin is colored in a color that can be easily distinguished from the body tissue or blood, even when the olefin-based resin sheet is not colored, it is easy to visually recognize and collect easily. be able to.

  The surgical pad material of the present invention comprises an X-ray contrast member. As described above, the heat-sealing resin that joins the cellulose sponge sheet and the olefin resin sheet has a contrast effect. Is also possible. In that case, it is preferable to contain the barium sulfate which is an X-ray contrast agent as an X-ray contrast member in the heat-sealing resin in the range of 10% by weight to 300% by weight, and more preferably 50% by weight to 250%. % By weight. If the barium sulfate content is less than 10% by weight, a sufficient contrast effect cannot be obtained, and if it exceeds 300% by weight, the bonding effect of the heat-sealing resin tends to be impaired.

  By giving the thermal fusion resin a contrast effect, the entire surgical pad material can be imaged in two dimensions. In addition, in the case of a surgical pad material having only a few X-ray contrast threads, the X-ray contrast threads may be hidden behind the skeleton, or depending on the direction of X-ray irradiation, confirmation by X-ray imaging may be difficult. However, the configuration in which the entire heat-sealing resin is imaged is easy to confirm, and can be suitably used. When barium sulfate, which is an X-ray contrast agent, is contained in the heat-sealing resin, the heat-sealing resin becomes white, so that the effect of facilitating visual recognition during surgery as described above is also exhibited.

  As another aspect of the heat-sealing resin, when a heat-sealing resin containing barium sulfate, which is an X-ray contrast agent, is used after being formed into a sheet shape such as a film or a non-woven fabric, the cellulose-based sponge sheet and the olefin-based material are improved A resin sheet can be bonded together.

  As described above, an X-ray contrast yarn can be further arranged at the joint between the cellulose-based sponge sheet and the olefin-based resin sheet. Unlike the case where the X-ray contrast yarn is woven or pressure-bonded into gauze or the like, in the present invention, the X-ray contrast yarn can be sandwiched between the cellulose sponge sheet and the olefin resin sheet. Insufficient strength or dropout of the yarn itself is not a problem. When the X-ray contrast thread is used alone, there is a risk of cutting or dropping if the strength is not strong. However, if the strength is maintained, the concentration of the X-ray contrast agent contained in the X-ray contrast thread can be increased. In some cases, it was difficult to confirm during X-ray imaging. Although there is a means of making confirmation easier by making the X-ray contrast yarn thicker, in that case, the rigidity of the X-ray contrast yarn is increased, which may cause a problem that flexibility is reduced. On the other hand, in the present invention, the X-ray contrast yarn is sandwiched between the cellulose-based sponge sheet and the olefin-based resin sheet or disposed together with the heat-sealing resin layer. Strength is not important.

  FIG. 5 is a schematic perspective view for illustrating and explaining another embodiment of the surgical pad material according to the present invention, which is characterized by the arrangement of the X-ray contrast thread. In FIG. 5, the surgical pad material 1 has a structure in which a cellulose sponge sheet 2 and an olefin resin sheet 3 are joined via a heat fusion resin 4. An X-ray contrast yarn 5 is spirally arranged on the joint surface of the resin 4. Thus, by arranging the X-ray contrast yarn 5 so as to draw a figure, the surgical pad material can be uniquely identified.

  FIG. 6 is a schematic perspective view for exemplifying another embodiment of the surgical pad material according to the present invention that enables two-dimensional recognition by X-ray contrast. In FIG. 6, the surgical pad material 1 has a structure in which a cellulose sponge sheet 2 and an olefin resin sheet 3 are joined via heat fusion resins 4, 4. 4, a cloth including the X-ray contrast yarn 5 is sandwiched. As described above, the X-ray contrast yarn 5 can be formed in a ring shape or crossed in a two-dimensional arrangement so that the surgical pad material can be recognized in two dimensions.

  In the surgical pad material of the present invention, for the purpose of enabling two-dimensional recognition, an X-ray contrast agent is kneaded with a heat-sealing resin such as an olefin resin as shown in FIGS. And it is preferable to mix | blend two-dimensionally. In addition, it is also preferable that two-dimensional recognition is possible by using a X-ray contrast yarn that is spirally spread as shown in FIG. 5 or a cloth that includes the X-ray contrast yarn 5 as shown in FIG. It is.

  The surgical pad material of the present invention is suitably used for brain surgery and the like.

(Example 1)
Cellulose sponge (CA107 original fabric manufactured by Toray Fine Chemical) is wet and cut into 3mm (thickness) x 150mm (width) x 580mm (length) with a vertical cutter, then left in an oven at 60 ° C for 24 hours And dried. The dried cellulose sponge was compressed to a thickness of 0.3 mm at a temperature of 120 ° C. with a hot press to produce a compressed sheet. Next, 100 parts of a polyolefin hot melt adhesive (spray melt 977T made by TEX YEAR INDUSTRIES INC.) Was melted, 80 parts of barium sulfate powder was mixed uniformly, and then cooled to blend the barium sulfate powder. A hot melt adhesive (heat fusion resin) was prepared. This hot melt adhesive containing barium sulfate was put in a hot melt gun (Sanyo Trading TR60.3) and applied to one side of a cellulose sponge compressed at a temperature of 180 ° C. so as to be uniformly sprayed, and a commercially available polypropylene film (0.3 mm thickness) was bonded together. The bonded sheet was pressed again with the above-described hot press, cut after cooling, and a surgical pad material of 0.6 mm (thickness) × 30 mm (width) × 100 mm (length) was created. When the obtained surgical pad material was impregnated with physiological saline, the thickness expanded to about 3.6 mm, and it was confirmed that the cellulose sponge was sufficiently impregnated with water. Furthermore, when this surgical pad material was radiographed, the shape was photographed in white, and it was confirmed that there was a contrast effect.

(Example 2)
Using the NC continuous punching machine, the surface of the polypropylene film of the surgical pad material of 0.6 mm (thickness) × 30 mm (width) × 100 mm (length) obtained in Example 1 was used at 3 locations in the length direction at 3 mm pitch. The cut was cut into dimensions (0.3 mm in depth), and the surgical pad material shown in FIG. 3 was obtained. It was confirmed that when this surgical pad material was impregnated with physiological saline, a gap of about 0.3 mm was formed at the cut portion, and the structure easily evaporates moisture.

(Example 3)
Cellulose sponge (CA107 original fabric manufactured by Toray Fine Chemical) is wet and cut into 3mm (thickness) x 150mm (width) x 580mm (length) with a vertical cutter, then left in an oven at 60 ° C for 24 hours And dried. The dried cellulose sponge was compressed to a thickness of 0.3 mm at a temperature of 120 ° C. with a hot press to produce a compressed sheet. Next, 100 parts of a polyolefin hot melt adhesive (spray melt 977T made by TEX YEAR INDUSTRIES INC.) Was melted, 80 parts of barium sulfate powder was mixed uniformly, and then cooled to blend the barium sulfate powder. A hot melt adhesive (heat fusion resin) was prepared. A hot melt adhesive (spray melt 977T made by TEX YEAR INDUSTRIES INC.) Is put into one side of the compressed cellulose sponge in advance to a hot melt gun (Sanyo Trading TR60.3) so that it becomes uniform at a temperature of 180 ° C. After applying to the hot melt adhesive containing barium sulfate was applied to a hot melt gun (Sanyo Trading TR60.3) and applied in a spiral shape at a temperature of 180 ° C. to draw a circle with a diameter of about 30 mm, Furthermore, a commercially available polypropylene film (0.3 mm thickness) was bonded. The bonded sheet was pressed again with the above-described hot press, cut after cooling, and a surgical pad material of 0.6 mm (thickness) × 30 mm (width) × 100 mm (length) shown in FIG. 5 was created.

Example 4
Cellulose sponge (CA107 original fabric manufactured by Toray Fine Chemical) is wet and cut into 3mm (thickness) x 150mm (width) x 580mm (length) with a vertical cutter, then left in an oven at 60 ° C for 24 hours And dried. The dried cellulose sponge was compressed to a thickness of 0.3 mm at a temperature of 120 ° C. with a hot press to produce a compressed sheet. Next, the gauze containing contrast yarn (manufactured by White Cross Co., Ltd.) is cut into 150 mm (width) × 580 mm (length) so that the X-ray contrast yarn is arranged in the central portion in the length direction to obtain a cloth containing the X-ray contrast yarn. It was. Next, a hot melt gun made of polyolefin (Spray Melt 977T made by TEX YEAR INDUSTRIES INC.) Was injected into a hot melt gun (Sanyo Trading TR60.3) on one side of the cellulose sponge and sprayed at a temperature of 180 ° C. After applying uniformly, the fabric is pasted, and the surface of the pasted fabric is similarly sprayed with a hot melt adhesive in a uniform manner, and a commercially available polypropylene film (0.3 mm thick) is further applied. ). The bonded sheet was pressed again with the above-mentioned hot press, cut after cooling, and the surgical pad material shown in FIG. 6 was created.

FIG. 1 is a schematic perspective view showing an example of a surgical pad material according to the present invention. FIG. 2 is a schematic perspective view for illustrating another embodiment of the surgical pad material according to the present invention. FIG. 3: is a schematic perspective view for demonstrating the other embodiment which the slit entered in the form which divides an olefin resin sheet in the surgical pad material concerning this invention. FIG. 4 is a schematic perspective view for illustrating another embodiment of the surgical pad material according to the present invention in which a slit is formed in a grid in the olefin resin sheet. FIG. 5 is a schematic perspective view for illustrating and explaining another embodiment of the surgical pad material according to the present invention, which is characterized by the arrangement of the X-ray contrast thread. FIG. 6 is a schematic perspective view for illustrating another embodiment of the surgical pad material according to the present invention that enables two-dimensional recognition by X-ray contrast.

Explanation of symbols

1: Surgical pad material 2: Cellulose sponge sheet 3: Olefin resin sheet 4: Thermal fusion resin 5: X-ray contrast yarn 6: Slit

Claims (9)

  A surgical pad material comprising a cellulosic sponge sheet and an olefin resin sheet joined together, and further comprising an X-ray contrast member.   The surgical pad material according to claim 1, which has a joint structure in which a cellulosic sponge sheet and an olefin resin sheet are joined by a heat-sealing resin.   The surgical pad material according to claim 1 or 2, wherein the heat-sealing resin is an olefin resin.   The surgical pad material according to any one of claims 1 to 3, wherein the heat-sealing resin contains barium sulfate as an X-ray contrast member in a range of 10 wt% to 300 wt%.   The surgical pad material according to claim 1, which has a joint structure in which the cellulose-based sponge sheet and the olefin-based resin sheet are joined by thermal fusion of the olefin-based resin sheet.   The surgical pad material according to any one of claims 1 to 5, wherein an X-ray contrast yarn as an X-ray contrast member is disposed at a joint portion between the cellulose sponge sheet and the olefin resin sheet.   The surgical pad material according to claim 1, wherein the olefin resin sheet is an olefin resin film.   The surgical pad material according to any one of claims 1 to 6, wherein the olefin resin sheet is a nonwoven fabric made of olefin resin fibers.   The surgical pad material according to any one of claims 1 to 8, wherein a slit is formed in the olefin-based resin sheet.

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