Skin patches

Abstract

To provide a skin patch which can realize further improvement in handling property and adaptability to the skin, and can reduce or eliminate pressure and friction which cause bedsores and pressure wounds due to medical equipment, and can protect the skin from pressure and friction. [Solution] The skin patch 100 is in a long shape and comprises a foam material 1, a silicone gel material 2, and a release material 3, in that order, and may be in a roll form wound in the longitudinal direction, or in a folded form folded in the longitudinal direction.

Description

[Technical field]

[0001] The present invention relates to a skin patch. [Background technology]

[0002] External forces and pressure applied to the body reduce or stop blood flow to the soft tissue between the bones and the surface of the skin, and if this condition continues for a certain period of time, it will lead to irreversible ischemic damage and develop into a bedsore.

[0003] In order to prevent and / or alleviate bedsores and the like, for example, a covering material for application to the skin has been proposed that has an outer surface with excellent slipperiness and reduces external impacts on the skin and friction with objects that it comes into contact with (Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2005-342199 A Summary of the Invention [Problem to be solved by the invention]

[0005] In recent years, damage to the skin or tissues of the underlying bed caused by pressure from medical devices has become a problem, rather than pressure caused by the weight of a person who has been bedridden for a long time. This type of tissue damage caused by pressure is called medical device related pressure ulcer (MDRPU).

[0006] Examples of medical devices that may cause such tissue damage include elastic stockings for preventing venous thromboembolism, casts and splints, nasal, endotracheal and tracheal tubes, tracheotomy cannulas, vascular and urinary catheters, oxygen masks, surgical position fixing devices, limb and trunk orthoses, wheelchair and bed components, etc. Such medical devices come in a variety of shapes and structures, and in order for them to function or act properly, they are placed or fixed to various parts of the body or come into contact with the skin.

[0007] In order to prevent medical device pressure injuries and to alleviate or treat their symptoms, it is effective to reduce or eliminate the pressure and friction on the skin that causes them. In medical settings, bandages or cut patches are placed between the medical device and the skin to reduce such pressure and friction.

[0008] However, when applying patches to medical devices and the skin to reduce pressure and friction, it is necessary to take into account the various shapes and structures of the medical devices, as well as the differences in skin elasticity and range of motion of joints, etc. depending on the part of the body.

[0009] The present invention has been made in view of such circumstances, and has as its first object to provide a skin patch that can realize further improvements in ease of handling and adaptability to the skin. The second object of the present invention is to provide a skin patch that can reduce or eliminate pressure and friction that cause bedsores and pressure wounds caused by medical devices, and can protect the skin from pressure and friction. [Means for solving the problem]

[0010] In order to solve the above problems, the present invention provides a skin patch that is in a long shape and includes a foam material, a silicone gel material, and a release material, in that order. Effect of the Invention

[0011] The skin patch according to the present invention can provide a patch that realizes further improvements in ease of handling and adaptability to the skin.Also, the skin patch according to the present invention can provide a patch that can reduce or eliminate pressure and friction that cause bedsores and pressure wounds caused by medical devices, and can protect the skin from pressure and friction. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a schematic cross-sectional view showing an example of the configuration of a skin patch of a first embodiment (example 1 of a skin patch) according to the present invention. [Diagram 2] FIG. 2 is a perspective view showing an example of the configuration of a skin patch of a second embodiment (example 2 of a skin patch) according to the present invention. [Diagram 3] FIG. 2 is a perspective view showing an example of the configuration of a skin patch of a third embodiment (example 3 of a skin patch) according to the present invention. [Figure 4] FIG. 13 is a diagram showing a state in which a skin patch according to a third embodiment (example 3 of a skin patch) of the present invention is contained in a holder. [Diagram 5] FIG. 1 is a diagram for explaining a method for evaluating bending resistance. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, preferred embodiments for carrying out the present invention will be described. The embodiments described below are examples of typical embodiments of the present invention, and the scope of the present invention should not be interpreted as being narrow.

[0014] In addition, unless otherwise specified, in the drawings, "upper" means the upper direction or upper side in the drawing, "lower" means the lower direction or lower side in the drawing, "left" means the left direction or left side in the drawing, and "right" means the right direction or right side in the drawing. In addition, in the drawings, the same or equivalent elements or members are given the same reference numerals, and duplicate explanations may be omitted.

[0015] The explanation will be given in the following order. 1. Overview of the Invention 2. First embodiment (Example 1 of skin patch) 3. Second embodiment (Example 2 of skin patch) 4. Third embodiment (Example 3 of skin patch) 5. Working Example

[0016] <1. Overview of this invention> First, an overview of the present invention will be described.

[0017] In order to reduce or remove pressure and friction that cause bedsores and pressure wounds from medical devices, and to protect the skin from pressure and friction, adhesives are often applied to the skin, but these adhesives often use acrylic or rubber-based adhesives, and can cause problems such as skin peeling irritation when peeled off and irritation when hair or body hair is pulled. The present invention has been made in consideration of the above circumstances. The present invention relates to an adhesive for the skin, which is a long-shaped adhesive for the skin that includes a foam material, a silicone gel material, and a release material in this order.

[0018] The skin patch according to the present invention can improve the ease of handling. That is, the skin patch according to the present invention can be easily applied to skin where pressure ulcers may occur, such as skin compressed by medical equipment or skin in contact with medical equipment, by peeling off the release material. In the skin patch according to the present invention, the fact that the release material does not bend or curl is thought to contribute greatly to the improvement of the ease of handling before application (ease of handling). The skin patch according to the present invention may be directly applied to or wrapped around medical equipment, etc., in order to reduce or remove pressure and friction that cause pressure ulcers caused by medical equipment, etc., and to protect the skin from pressure and friction.

[0019] Here, easy handling (improved handling) refers to the ease with which the skin patch can be held, the ease with which the release material can be peeled off, the ease with which the skin patch can be applied to the skin, etc., during the series of handling steps from when a medical professional holds the skin patch, peels off the release material provided in the skin patch, and applies the exposed silicone gel material to the skin, etc., of a patient, etc. In addition, when the skin patch is in a roll form wound in the longitudinal direction or in a folded form folded in the longitudinal direction, the ease with which the skin patch can be cut out to an appropriate size with scissors, etc., can also be said to be easy handling. Furthermore, when a roll form skin patch or a folded form skin patch is stored in a holder, etc., the ease with which the skin patch can be pulled out (removed) from the holder, etc. can also be said to be easy handling.

[0020] In addition, since the skin patch of the present invention uses a foam material, it has excellent adaptability to the stretching of the skin after application to the skin, and there is little discomfort when applied. Since the skin patch of the present invention uses a silicone gel material, there is little peeling irritation to the skin, and the skin patch can be peeled off from the skin without worrying about hair or body hair falling out when peeled off. In addition, due to the properties of the silicone gel, the skin patch of the present invention can be peeled off and re-adhered from the skin for observation or position adjustment, and there is no peeling irritation. In addition, patches using acrylic or rubber-based adhesives peel off the stratum corneum of the skin when peeled off, and the stratum corneum adheres to the adhesive surface, so they cannot be peeled off or re-adhered, and there is also skin peeling irritation.

[0021] Hereinafter, an embodiment of the present invention will be described.

[0022] <2. First embodiment (Example 1 of skin patch)> A skin patch according to a first embodiment of the present invention (example 1 of a skin patch) will be described with reference to Fig. 1. Fig. 1 is a schematic cross-sectional view showing an example of the configuration of a skin patch according to a first embodiment of the present invention, specifically, a schematic cross-sectional view of a skin patch 100.

[0023] As shown in Fig. 1, the skin patch 100 comprises, in this order (from top to bottom in Fig. 1), a foam material 1, a silicone gel material 2, and a release material 3. Although not shown in Fig. 1, a portion of the silicone gel material 2 may be impregnated into the foam material 1.

[0024] The foam material 1 is preferably made of, for example, a polyurethane foam material. The polyurethane foam material is made of a porous foam obtained by foaming polyurethane. The urethane may be made of, for example, at least one type of polyol and a compound containing at least one isocyanate group. The polyurethane foam material has an appropriate flexibility with respect to the skin, and therefore can improve the ability to follow the stretching of the skin, adaptability to the skin, and fit to the skin.

[0025] From the viewpoints of adaptability to the stretching of the skin and ease of handling when applied to the skin (ease of holding, ease of handling with one hand, etc.), the thickness (mm) of the foam material 1 is preferably 2 to 5 mm, and more preferably 3 to 4 mm. From the viewpoint of ease of handling (ease of holding, ease of handling with one hand, etc.), the foam material 1 has a bending resistance (JIS L 1913:2010 "41.5° cantilever"). The bending resistance (measured according to the "bar method") is preferably 12 to 300 mN·cm, and more preferably 22 to 140 mN·cm. From the viewpoint of reducing stuffiness and discomfort due to sweating when applied to the skin, the foam material 1 is preferably breathable, and the air resistance (Gurley) is preferably 1 second or less, and more preferably 0.5 seconds.

[0026] The silicone gel material 2 may be made of a silicone resin. From the viewpoint of improving the handling property, the silicone resin is preferably a gel-like substance having adhesiveness. The silicone resin is not particularly limited, and any of an addition reaction type, a peroxidation reaction type, and a condensation reaction type may be used, but an addition reaction type silicone resin is preferable.

[0027] Addition reaction type silicone resins are produced by subjecting an organopolysiloxane having alkenyl groups bonded to silicon atoms (alkenyl group-containing organopolysiloxane) to an addition reaction (hydrosilylation reaction) with an organopolysiloxane having hydrosilyl groups (Si-H) (hydrogen organopolysiloxane) using a platinum compound catalyst such as chloroplatinic acid.

[0028] The crosslinking density of the addition reaction type silicone resin can be adjusted by changing the amount of organohydrogenpolysiloxane used in the synthesis or the amount of hydrosilyl group (Si-H) in the organohydrogenpolysiloxane molecule. This makes it easy to adjust the hardness and adhesive strength of the silicone resin. The addition reaction type silicone resin used in the present invention is preferably an addition reaction product of vinyl-substituted polydimethylsiloxane and organohydrogenpolysiloxane.

[0029] The silicone resin may be used alone or in combination of two or more kinds. The silicone resin is preferably cured by crosslinking or the like. The curing method of the silicone resin is not particularly limited, and the silicone resin can be easily crosslinked by heating or the like.

[0030] The silicone gel material 2 is applied to the foam material 1 at a weight (g / m2) based on the viewpoints of adaptability to the skin, difficulty in peeling off from the skin, ease of handling (ease of peeling off from the release material), etc. 3 ) is 70g / m 3 ~260g / m 3 It is preferable that the thickness is 100 g / m 3 ~230g / m 3 More preferably, it is 150 g / m 3 ~230g / m 3 It is more preferable that:

[0031] The release material 3 is a separator that is releasably provided on the surface of the silicone gel material 2 to protect the silicone gel material 2, and can be a synthetic resin film or paper that has been subjected to a release treatment using a silicone-based release agent, fluorine, a fluorine compound, etc. From the viewpoints of ease of processing with scissors when cutting the patch and ease of handling when applying it to the skin (easy to hold, can be handled with one hand, etc.), the release material 3 is preferably made of a synthetic resin film such as polyester, polyethylene, polypropylene, etc.

[0032] From the viewpoints of ease of processing with scissors when cutting the patch and ease of handling when applying to the skin (easy to hold, can be handled with one hand, etc.), the thickness (mm) of the release material 3 is preferably 25 μm to 75 μm or more, more preferably 25 μm to 100 μm, and even more preferably 50 μm to 75 μm. From the viewpoints of ease of processing with scissors when cutting the skin patch 100 and ease of handling when applying to the skin (easy to hold, can be handled with one hand, etc.), the bending resistance of the release material 3 (measured in accordance with the "41.5° cantilever method" of JIS L 1913:2010) is preferably 0.3 to 45 mN·cm, and even more preferably 3 to 12 mN·cm.

[0033] From the viewpoint of adaptability to the stretching of the skin, the skin patch 100 is preferably stretchable in a state where the release material 3 has been removed therefrom (a state where the silicone gel material 2 has been applied to the foam material 1), and has a stretching force of preferably 0.1 N / 25 mm to 2.2 N / 25 mm, more preferably 0.1 N / 25 mm to 0.5 N / 25 mm, at 10% stretching, and preferably 0.2 N / 25 mm to 4.1 N / 25 mm, more preferably 0.2 N / 25 mm to 1.0 N / 25 mm, at 20% stretching. Moreover, from the viewpoint of reducing stuffiness and discomfort due to sweating, etc., when the skin patch 100 is applied to the skin in a state where the release material 3 has been removed therefrom (a state where the silicone gel material 2 has been applied to the foam material 1), the skin patch 100 is preferably breathable, and has an air resistance (Gurley) of preferably 10 seconds or less, more preferably 5 seconds or less.

[0034] From the viewpoint of preventing bedsores, the pressure reduction rate when the skin patch 100 is applied to the skin is preferably 6% or more, more preferably 30% or more, and even more preferably 39% or more.

[0035] Next, a method for producing the skin patch of the first embodiment (example 1 of the skin patch) according to the present invention will be described.

[0036] First, the silicone gel material 2 is applied onto the release material 3, the foam material 1 is laminated thereon, and then the laminate is dried to produce the skin adhesive 100. The skin adhesive 100 is formed by including the foam material 1, the silicone gel material 2, and the release material 3 in this order (from top to bottom in FIG. 1).

[0037] The above description of the manufacturing method for the skin patch 100 can be applied when manufacturing a skin patch of the second embodiment of the present invention (Example 2 of skin patch) and a skin patch of the third embodiment of the present invention (Example 3 of skin patch) described below.

[0038] Furthermore, in addition to the above, the contents described in the sections on the skin patches of the second and third embodiments of the present technology described below can be applied directly to the skin patch of the first embodiment of the present invention (Example 1 of skin patch), unless there is any particular technical contradiction.

[0039] <3. Second embodiment (Example 2 of skin patch)> A skin patch according to a second embodiment (example 2 of a skin patch) of the present invention will be described with reference to Fig. 2. Fig. 2 is a schematic cross-sectional view (perspective view) showing an example of the configuration of a skin patch 200 according to the second embodiment of the present invention.

[0040] As shown in FIG. 2, the skin patch 200 comprises a foam material 1, a silicone gel material 2, and a release material 3, in that order (from top to bottom in FIG. 2), with the release material 3 extending outside the foam material 1 and the silicone gel material 2.

[0041] Since the release material 3 extends to the outside of the foam material 1 and the silicone gel material 2, it is possible to prevent dirt such as dust from adhering to the foam material 1 and / or the silicone gel material 2, and since the release material 3 can be more easily peeled off, the time required to apply the skin patch 200 to the skin of a patient, etc. can be shortened without taking any extra time. The length L1 (length in a direction approximately perpendicular to the longitudinal direction of the skin patch, i.e., the length in the left-right direction in FIG. 2) of the extension portion 31 of the release material 3 is preferably 1 to 20 mm, more preferably 3 to 10 mm, outward (leftward in FIG. 2) from the outer edge G1 (side edge in the longitudinal direction of the skin patch) of the foam material 1 and the silicone gel material 2, and the length L2 (length in a direction approximately perpendicular to the longitudinal direction of the skin patch, i.e., the length in the left-right direction in FIG. 2) of the extension portion 32 of the release material 3 is preferably 0.5 to 20 mm, more preferably 2 to 10 mm, outward (rightward in FIG. 2) from the outer edge G2 (side edge in the longitudinal direction of the skin patch) of the foam material 1 and the silicone gel material 2. By having the extension portions 31 and / or 32 of the release material 3, the handling property when applied to the skin and the ease of processing with scissors when cutting the patch are improved. The length L1 of the extension portion 31 and the length L2 of the extension portion 32 may be substantially the same length or may be different lengths.

[0042] In addition to the contents described above, the contents described in the section on the skin patch of the first embodiment of the present technology described above and the contents described in the section on the skin patch of the third embodiment of the present technology described below can be applied directly to the skin patch of the second embodiment of the present invention (Example 2 of skin patch), unless there is any particular technical contradiction.

[0043] <4. Third embodiment (Example 3 of skin patch)> A skin patch according to a third embodiment (example 3 of a skin patch) of the present invention will be described with reference to Fig. 3. Fig. 3 is a schematic cross-sectional view showing an example of the configuration of a skin patch according to the third embodiment of the present invention, specifically, a schematic cross-sectional view of a skin patch 300.

[0044] 3, the skin patch 300 comprises a release material 3, a silicone gel material 2, and a foam material 1 in this order (from top to bottom in FIG. 3), with the release material 3 extending outside the foam material 1 and the silicone gel material 2. The skin patch 300 is in the form of a long tape, and is in the form of a roll wound in the longitudinal direction. The skin patch 300 may also be in the form of a long tape, and may be in the form of a folded shape folded in the longitudinal direction.

[0045] Like the skin patch 200 of the second embodiment of the present invention, in the skin patch 300 of the third embodiment of the present invention, the release material 3 extends to the outside of the foam material 1 and the silicone gel material 2, thereby preventing dirt such as dust from adhering to the foam material 1 and / or the silicone gel material 2, and also makes it easier to peel off the release material 3, so that the time required to cut out the roll-form skin patch 300 with scissors or the like and apply it to the skin of a patient or the like can be completed in a short period of time without additional time being spent. The length L1 (length in a direction approximately perpendicular to the longitudinal direction of the skin patch, i.e., the length in the left-right direction in FIG. 3) of the extension portion 31 of the release material 3 is preferably 0.5-20 mm, more preferably 2-10 mm, outward (leftward in FIG. 3) from the outer edge G1 (side edge in the longitudinal direction of the skin patch) of the foam material 1 and the silicone gel material 2, and the length L2 (length in a direction approximately perpendicular to the longitudinal direction of the skin patch, i.e., the length in the left-right direction in FIG. 3) of the extension portion 32 of the release material 3 is preferably 0.5-20 mm, more preferably 2-10 mm, outward (rightward in FIG. 3) from the outer edge G2 (side edge in the longitudinal direction of the skin patch) of the foam material 1 and the silicone gel material 2. By having the extension portions 31 and / or 32 of the release material 3, the handling property when applied to the skin and the ease of processing with scissors when cutting the patch are improved. The length L1 of the extension portion 31 and the length L2 of the extension portion 32 may be substantially the same length or may be different lengths.

[0046] FIG. 4 is a diagram showing a state in which a roll of a skin patch 400 (a skin patch according to a third embodiment of the present invention) is stored in a holder 4. As shown in FIG. 4, the skin patch 400 is stored in a roll in the holder 4 so that the release material 3 of the skin patch 400 is on the outside of the skin patch 400 (so that the foam material (not shown in FIG. 4) is on the inside of the skin patch 400). The holder 4 has at least a first surface 41 and a second surface (not shown in FIG. 4) that face each other, and a third surface 43 that connects the first surface 41 and the second surface. A scale 30 is provided on the outer surface of the release material 3 (the side opposite to the side where the release material 3 is attached to the silicone gel material) so that the scale 30 can be seen by a user (e.g., a medical professional) and serves as a guide when cutting the skin patch 400 for use.

[0047] From the viewpoint of ease of pulling out the skin patch 400 from the holder 4, the pull-out opening 5 for pulling out the skin patch 400 provided on the holder 4 is formed on the first surface 41 on the side of the connection portion where the first surface 41 and the third surface 43 are connected. That is, the pull-out opening 5 is provided on the upper end of the holder 4. It is preferable that the height d (length in a direction substantially perpendicular to the pull-out direction) of the pull-out opening 5 for pulling out the skin patch 400 provided on the holder 4 is a height (length) of ±15% of the thickness of the skin patch (the combined thickness of the three components: the foam material, the silicone gel material, and the release material). By having the pull-out opening at the upper end of the holder 4, it is easier to pull out the tip of the skin patch 400 from the holder 4 compared to a case where it is not provided, and it can be handled hygienically.

[0048] In addition to the above, the contents described in the sections on the skin patches of the first and second embodiments of the present technology can be applied directly to the skin patch of the third embodiment of the present invention (Example 3 of skin patch), unless there is any particular technical contradiction. EXAMPLES

[0049] The effects of the present invention will be specifically described below with reference to examples. Note that the scope of the present invention is not limited to the examples. The skin patches of each example and each comparative example were evaluated as shown below.

[0050] <Thickness evaluation method> The thickness is measured using a thickness measuring device (manufactured by OZAKI MFG.CO.,LTD., product name "DIAL THICKNESS GAUGE H (0.01-10mm)"). Foam material test Measure the thickness (mm) of the test specimen of the body and the release material.

[0051] <Evaluation method for air resistance> The air resistance (Gurley) is measured according to JIS P 8117 "Paper and paperboard - Air permeability test method - Gurley tester method". This air resistance is the resistance of 100 ml of air to 642 mm 2 The air resistance (seconds) of the foam material test specimen is measured.

[0052] <Evaluation method for extension force> The test is conducted by pulling a test specimen measuring 120mm long x 25mm wide with a chuck distance of 50mm. The test specimen is left to rest for 3 hours in an environment with a temperature of 20°C and humidity of 65%RH, and then the test is conducted in the same environment using a tensile testing machine (Shimadzu Corporation, Autograph AGS-X) at a tensile speed of 300mm / min. The stress (N / 25mm) is measured when the test specimen is stretched to the specified elongation (elongation rate of 10%, 20%), and this value is taken as the extension force (N / 25mm). The extension force (N / 25mm) of a test specimen with a silicone gel material applied to the foam material is measured.

[0053] <Evaluation method for bending resistance> The bending resistance is measured according to JIS L 1913 (2010) "41.5° cantilever method". Fig. 5 is a diagram for explaining the bending resistance evaluation method. As shown in Fig. 5, a bending resistance tester 1000 based on the cantilever method includes a scale 1002, a 45° inclined surface 1003, a cutout portion 1004, and a horizontal table 1005.

[0054] First, a 25 mm x 250 mm test piece 1001 is placed on a smooth horizontal table 1005 with a 41.5 degree slope 1003 at one end, as shown in Figure 5, with the short side of the test piece 1001 aligned with the baseline of the scale 1002. Next, the test piece 1001 is gently slid in the direction of the slope 1003, and when the center point of one end of the test piece 1001 comes into contact with the slope A (represented by reference symbol P in Figure 5), the position of the other end is read on the scale. The bending resistance is indicated by the length (mm) traveled by the test piece 1001, and the average value of the four values ​​on the front, back, and both ends of the test piece is calculated. The bending resistance (mN·cm) is measured for the foam material test piece and the release material test piece.

[0055] <Lifting and peeling when applied> A test piece of the skin patch adjusted to a width of 25 mm and a length of 70 mm is applied to the index finger (outside) of three subjects, and after three hours the test piece is evaluated for lifting or peeling off from the skin according to the following criteria.

[0056] (Evaluation Criteria) ○: No lifting or peeling. △: Slight lifting or peeling. ×: Significant lifting or peeling.

[0057] <Handling when applied> The ease of cutting the patch with scissors and ease of handling when applying it to the skin (easy to hold, can be used with one hand) are comprehensively judged and evaluated according to the following criteria.

[0058] (Evaluation Criteria) ○: Very easy to handle. △: Slightly difficult to handle. ×: Difficult to handle.

[0059] <Re-peel / re-adhesion> A test piece of skin patch adjusted to a width of 15 mm and a length of 25 mm was applied to the forearm skin of three subjects. After three hours, the test piece was peeled off from the skin and the peeled test piece was reapplied to the skin. The degree of lifting or peeling from the skin was evaluated according to the following criteria.

[0060] (Evaluation Criteria) ○: No lifting or peeling. △: Slight lifting or peeling. ×: Significant lifting or peeling.

[0061] <Pressure reduction rate evaluation method> The pressure reduction rate is evaluated under environmental conditions of a temperature of 23°C ± 2°C and a humidity of 50% ± 5%.

[0062] First, the probe of a contact pressure measuring device (AMI3037-2 / 2B: manufactured by AMI Techno Co., Ltd.) is placed on the pseudo-skin (also called artificial skin) (Bio Skin Plate: manufactured by Viewlux Co., Ltd.).

[0063] Next, a 5cm x 5cm test piece is placed between the artificial skin and the probe, and a 5cm x 5cm metal plate (stainless steel plate) is placed on the probe. A weight (weight) of 600g is then placed on the metal plate (stainless steel plate). The pressure when the weight (weight) of 600g is placed is measured using a contact pressure meter (AMI3037-2 / 2B: manufactured by AMI Techno Co., Ltd.). Note that the state where the weight (weight) of 600g is not placed on the metal plate (stainless steel plate) (i.e., the state where only the metal plate (stainless steel plate) is placed) is defined as 0mmHg.

[0064] The pressure reduction rate (%) of the test piece is calculated based on the following formula (1).

[0065] Pressure reduction rate (%) = 1 - {(pressure with test piece) ÷ (pressure without test piece)} × 100... Formula (1)

[0066] The weight was set to 600g because it was confirmed that the pressure produced when the weight was 600g was roughly equivalent to the pressure produced when the tube or splint was placed on the skin and the tube or splint (skin) was pressed against a bed mattress to the extent that pressure was felt.

[0067] The skin patches used in the Examples and Comparative Examples are described below. The Examples were prepared in the same manner as in the first embodiment (Example 1 of Skin Patch) described above.

[0068] <Example 1> Skin patch-1 was produced using polyurethane foam as the foam material, an addition reaction type silicone resin of silicone gel material as the adhesive, and a polyester film as the release material. The coating weight of the silicone gel material was 220 g / m 3 The release material was extended 5 mm outward from the outer edges (side edges in the longitudinal direction of the skin patch) of both the foam material and the silicone gel material. The evaluation results for skin patch-1 are shown in Table 1 below.

[0069] <Example 2> Skin patch-2 was produced using polyurethane foam as the foam material, an addition reaction type silicone resin of silicone gel material as the adhesive, and a polyester film as the release material. The coating weight of the silicone gel material was 70 g / m 3 The release material was extended 5 mm outward from the outer edges (side edges in the longitudinal direction of the skin patch) of both the foam material and the silicone gel material. The evaluation results for skin patch-2 are shown in Table 1 below.

[0070] <Example 3> Skin patch-3 was produced using polyurethane foam as the foam material, an addition reaction type silicone resin of silicone gel material as the adhesive, and a polyester film as the release material. The coating weight of the silicone gel material was 220 g / m 3 The release material was extended 5 mm outward from the outer edges (side edges in the longitudinal direction of the skin patch) of both the foam material and the silicone gel material. The evaluation results for skin patch-3 are shown in Table 1 below.

[0071] <Comparative Example 1> A skin patch A was produced using polyurethane foam as the foam material, an acrylic adhesive as the adhesive, and paper as the release material. The evaluation results for the skin patch A are shown in Table 1 below.

[0072] <Comparative Example 2> A polyurethane foam was used as the foam material, an acrylic adhesive as the adhesive, and paper as the release material to prepare a skin patch B. The evaluation results for the skin patch B are shown in Table 1 below.

[0073] <Evaluation results and considerations> Table 1 shows the evaluation results of skin patches 1 to 3 according to Examples 1 to 3, and skin patches A and B according to Comparative Examples 1 and 2.

[0074] [Table 1]

[0075] As is clear from Table 1, skin patches 1 to 3 of Examples 1 to 3 showed better evaluation results for lifting / peeling during application, handleability during application, and re-peeling / re-adhesion than skin patches A to B of Comparative Examples 1 and 2, and are considered to have superior handleability and adaptability to skin stretching.

[0076] This is thought to be because the thickness and stiffness characteristics of each component or the entire skin patch-1 to skin patch-3 of Examples 1 to 3 make the skin patches easy to hold and handle with one hand, and because the extensibility characteristics of each component or the entire skin patch give them excellent ability to follow the stretching of the skin.

[0077] In addition, due to the breathability of each component or the entirety of skin patch-1 to skin patch-3 of Examples 1 to 3, and the adhesive properties of the silicone gel material, they are difficult to peel off from the skin and can be peeled off and re-adhered to the skin.

[0078] Due to the characteristics of the release material provided in the skin patch-1 to skin patch-3 according to Examples 1 to 3, the skin patch has excellent handleability, such as being easy to hold and being able to be handled with one hand, and excellent processability with scissors.

[0079] Among skin patch-1 to skin patch-3 according to Examples 1 to 3, skin patch-2 according to Example 2 had the largest pressure reduction rate (pressure reduction rate was 66%). That is, in terms of pressure reduction rate (from the viewpoint of bedsore prevention), skin patch-2 according to Example 2 showed a better result than skin patch-1 according to Example 1 and skin patch-3 according to Example 3 (Result 1).

[0080] Result 1 is believed to be due to the fact that, among skin patch-1 to skin patch-3 of Examples 1 to 3, skin patch-2 of Example 2 had the thickest foam material (thickness was 5 mm).

[0081] Although the thickness of the foam material in skin patch-2 of Example 2 and skin patch-A of Comparative Example 1 was the same at 5 mm, the pressure reduction rate of skin patch-2 of Example 2 was 66%, while the pressure reduction rate of skin patch-A of Comparative Example 1 was 38%. In other words, in terms of pressure reduction rate (from the viewpoint of bedsore prevention), skin patch-2 of Example 2 showed a better result than skin patch-A of Comparative Example 1 (Result 2).

[0082] It is believed that result 2 is mainly due to the difference in softness. Since the extensibility of skin patch-2 of Example 2 (extensibility (N / 25 mm) at an elongation rate of 10% and extensibility (N / 25 mm) at an elongation rate of 20%) is smaller than the extensibility of skin patch-A of Comparative Example 1 (extensibility (N / 25 mm) at an elongation rate of 10% and extensibility (N / 25 mm) at an elongation rate of 20%), it is believed that skin patch-2 of Example 2 is easier to stretch and softer in hardness than skin patch-A of Comparative Example 1.

[0083] The present invention can also be configured as follows. [1] A foam material, a silicone gel material, and a release material are provided in this order; A skin patch in a long shape. [2] The skin patch described in [1], which is in a roll form wound in the longitudinal direction. [3] The device is housed in a holder having at least a first surface and a second surface facing each other, a third surface connecting the first surface and the second surface, and a drawing port formed in the first surface on the side of a connection portion where the first surface and the third surface are connected, A scale is provided on the outer surface of the release material, The skin patch described in [2] above, which is used by pulling out the release material from the pull-out opening with the scale on the outer side. [4] The skin patch according to any one of [1] to [3], for reducing and / or eliminating pressure and / or friction that cause pressure ulcers. [5] A skin patch according to any one of [1] to [4], for protecting the skin from pressure and / or friction that can cause pressure ulcers. [6] The skin patch according to any one of [1] to [5], wherein the release material extends outside the foam material and / or the silicone gel material. [Explanation of symbols]

[0084] 1...Foam material, 2...Silicone gel material, 3...Release material, 4...Holder, 5...Pull-out port, 30...Scale on release material, 31, 32...Extension portion, 100, 200, 300, 400...Skin patch.

Claims

1. A foam material, a silicone gel material, and a release material are provided in this order; A skin patch in a long shape.

2. A foam material, a silicone gel material, and a release material are provided in this order; A skin patch in a long shape for protecting the skin from pressure and / or friction that can cause pressure ulcers.

3. 3. The skin patch according to claim 1, which is in the form of a roll wound in the longitudinal direction.

4. The device is housed in a holder having at least a first surface and a second surface facing each other, a third surface connecting the first surface and the second surface, and a draw-out opening formed in the first surface on the connection side where the first surface and the third surface are connected, A scale is provided on the outer surface of the release material, The skin patch according to claim 3, which is used by pulling the release material outward from the pull-out opening.

5. The skin patch according to any one of claims 1 to 4, wherein the foam material is a polyurethane foam material having a thickness of 2 to 5 mm, the silicone gel material contains an addition reaction type silicone resin having adhesive properties, and the release material is composed of a synthetic resin film.

6. The skin patch according to any one of claims 1 to 5, wherein the release material extends outside the foam material and / or the silicone gel material.

7. The skin patch according to any one of claims 1 to 6, which has an air resistance of 10 seconds or less.

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