JP7645745B2 - Tubular body fixing device - Google Patents

Description

The present invention relates to a tubular body fixing device for fixing medical tubular bodies such as infusion and drainage tubes and catheters to the skin of a patient, etc.

Conventionally, a tubular body fixing device for attaching and fixing a tube or catheter for infusion or drainage to a patient's skin is known (Patent Document 1). For example, as shown in FIG. 9, a tubular body fixing device 101 includes a lower layer 102 that is attached to the patient's skin, a tubular body engaging portion 104 disposed on the lower layer 102, and an upper layer 103 connected to the lower layer 102. The tubular body T is sandwiched between the adhesive surface of the tubular body engaging portion 104 and the adhesive surface of the upper layer 103, and is fixed between the lower layer 102 and the upper layer 103 by adhesion between these adhesive surfaces. In this tubular body fixing device 1, the adhesive surfaces are not easily released from the adhesive surface near the tubular body T, so that the upper layer 103 is not easily peeled off from the lower layer 102.

JP 2020-151236 A

However, when the tubular body fixing device 101 becomes dirty, it may be desirable to replace only the tubular body fixing device 101 with a new one while continuing to use the tubular body T as is. However, in the tubular body fixing device 101, the tubular body T is firmly fixed to the tubular body fixing device 101 by adhesion between the adhesive surfaces, and therefore there is a risk that the tubular body T may be difficult to separate from the tubular body fixing device 101.

The present invention aims to provide a tubular body fastener that allows the tubular body to be easily separated when replacing the tubular body fastener.

The tubular body fixing device of the present invention is a tubular body fixing device capable of fixing a tubular body on the skin, and comprises a tubular body retaining part which is a sheet-like part located on the inside when in use and has a tubular body adhesive layer on its outer surface when in use, and an outer layer part which is a sheet-like part located on the outside when in use and can cover the tubular body retaining part and the tubular body retained by the tubular body adhesive layer from the outside and has a polymerization adhesive layer on its inner surface when in use, and the tubular body retaining part is in contact with the tubular body when in use. The tubular body has a non-adhesive portion where the adhesive layer for the tubular body is not formed, at least at one end in the longitudinal direction of the tubular body, where the outer layer portion overlaps with the non-adhesive portion in the inward and outward directions, and the outer layer portion has a notch or cut that penetrates in the inward and outward directions in a portion that overlaps with the non-adhesive portion in the inward and outward directions during use, and the position where the non-adhesive portion is formed in the tubular body engaging portion is a position close to the edge of the tubular body engaging portion on the first separation side that separates first from the tubular body engaging portion when the outer layer portion is peeled off from the tubular body engaging portion in the width direction perpendicular to the longitudinal direction.

With this configuration, the non-adhesive portion of the tubular body engaging portion is biased toward the leading edge toward the separation side in the width direction, so the width dimension of the tubular body adhesive layer located between the leading edge of the separation side and the tubular body can be reduced. Since the adhesive strength is reduced by the amount of the reduced width dimension, the outer layer can be easily peeled off from the tubular body engaging portion.

In addition, in the tubular body fixing device, the non-adhesive portion is a notch that penetrates the tubular body engaging portion in the inward and outward direction, and the outer layer portion has a notch that penetrates in the inward and outward direction in a portion that overlaps with the non-adhesive portion in the inward and outward direction during use.

With this configuration, the shape of the notch in the tubular body locking portion matches the shape of the notch in the outer layer portion. This improves the aesthetic appearance of the tubular body fastener.

In addition, in the tubular body fixing device, the edge of the tubular body engaging portion on the leading separation side is provided on the leading separation side of the center of the width direction of the non-adhesive portion.

This configuration allows the adhesive layer for the tubular body to come into contact with the tubular body located approximately at the center of the width of the non-adhesive portion, so that the tubular body can be securely held by the tubular body retaining portion.

The tubular body fixing device also includes an inner layer portion that is a sheet-like portion facing the outer layer portion so as to sandwich the tubular body engaging portion, and has an adhesive layer for skin on its inner surface when in use, and one end of the inner layer portion in the width direction is integrated with the outer layer portion before use, and the other end in the width direction is the first separation side.

This configuration allows the tubular body fixing device to be a single unit, making it easy to use. In addition, the outer layer can be peeled off from the tubular body engaging portion in a fixed direction.

In addition, in the tubular body fixing device, the inner layer has a notch or cut corresponding to the outer layer in the portion that overlaps the outer layer in the inward/outward direction during use.

With this configuration, by providing a notch or cut in the inner layer that adheres to the skin, the edge length of the inner layer can be increased, allowing the inner layer to be attached more firmly to the skin.

As described above, the present invention provides a tubular body fastener that allows the tubular body to be easily separated when replacing the tubular body fastener.

FIG. 1 is a plan view of a tubular body fixing device according to the present embodiment. 2 is a cross-sectional view taken along the line II-II in FIG. 1, where FIG. 2(a) is a cross-sectional view of the tubular body fixing device of FIG. 1 cut horizontally at the center position in the width direction, and FIG. 2(b) is a cross-sectional view showing the position of the tubular body relative to the tubular body fixing device. FIG. 3 is a plan view of the tubular body fixing device with the outer layer portion removed. Figure 4 is a schematic diagram for explaining the fixing of a tubular body by the tubular body fixing device, Figure 4(a) is a plan view of the tubular body fixing device with a first region of the inner layer release liner peeled off, Figure 4(b) is a plan view of the tubular body fixing device with a second region of the inner layer release liner peeled off, Figure 4(c) is a plan view of the tubular body fixing device before the locking portion release liner is peeled off, and Figure 4(d) is a plan view of the tubular body fixing device with the locking portion release liner peeled off. Figure 5 is a schematic diagram for explaining the fixing of a tubular body by the tubular body fixing device, where Figure 5(a) is a plan view of the tubular body placed in the tubular body engaging portion, Figure 5(b) is a plan view of the tubular body with the first region of the outer layer release liner peeled off, and Figure 5(c) is a plan view of the tubular body with the second region of the outer layer release liner peeled off. Figure 6 is a schematic diagram for explaining the fixing of a tubular body by the tubular body fixing device, where Figure 6(a) is a plan view of the tubular body being clamped, and Figure 6(b) is a plan view of the tubular body being fixed by the tubular body fixing device. Figure 7 is a schematic diagram for explaining the removal of a tubular body from the tubular body fixing device, where Figure 7(a) is a plan view of the tubular body fixed by the tubular body fixing device, Figure 7(b) is a plan view of the tubular body fixing device when peeling of the outer layer has begun, and Figure 7(c) is a plan view of the tubular body fixing device when peeling of the outer layer is in progress. Figure 8 is a schematic diagram for explaining the removal of the tubular body from the tubular body fixing device, where Figure 8(a) is a plan view of the exposed tubular body, and Figure 8(b) is a plan view of the tubular body when being removed. FIG. 9 is a schematic diagram of a conventional tubular body fixing device, and is a cross-sectional view of a state in which a tubular body is fixed by the tubular body fixing device.

Embodiments of the present invention will be described below with reference to Figs. 1 to 8. The tubular body fixing device is a tubular body fixing device capable of fixing a tubular body T onto the skin, and is, for example, a device capable of fixing a medical tubular body such as a tube for infusion or drainage, a catheter, onto the skin of a patient. In this specification, the side closer to the skin is referred to as the inside, and the side farther from the skin is referred to as the outside.

As shown in Fig. 1 and Fig. 2(a), the tubular body fixing device 1 comprises a tubular body engaging portion 4, which is a sheet-like portion located on the inside when in use, and an outer layer portion 3, which is a sheet-like portion located on the outside when in use. The tubular body fixing device 1 of this embodiment comprises an inner layer portion 2, which is a sheet-like portion facing the outer layer portion 3 so as to sandwich the tubular body engaging portion 4, inside the outer layer portion 3. The tubular body fixing device 1 also comprises a patch portion 8, which is located on the outside of the outer layer portion 3 when in use.

This tubular body fixing device 1 comprises an inner layer release liner 5 arranged inside the inner layer 2, an outer layer release liner 6 arranged inside the outer layer 3, and an engagement part release liner 7 arranged outside the tubular body engagement part 4. Furthermore, the tubular body fixing device 1 comprises a patch part release liner 9 arranged inside the patch part 8. Each release liner 5, 6, 7, 9 is in the form of a sheet, and is removed when used.

In this tubular body fixing device 1, the inner layer 2 and the outer layer 3 extend in one direction (the left-right direction in Fig. 1 and Fig. 2(a), hereafter referred to as the horizontal direction). Note that in Fig. 2(a) and Fig. 2(b), the outer layer 3 extends diagonally, but in reality it extends approximately parallel to the inner layer 2.

The tubular body fixing device 1 has an external appearance that is, for example, a substantially square sheet shape when viewed in a plan view from a direction substantially perpendicular to the outer layer portion 3 (see FIG. 1). The horizontal dimension of the tubular body fixing device 1 of this embodiment and the dimension in the depth direction perpendicular to the horizontal direction of the tubular body fixing device 1 are both approximately 50 mm to 100 mm, for example 85 mm.

The tubular body locking portion 4 is a member capable of locking the tubular body T in a state where it is sandwiched between the inner layer portion 2 and the outer layer portion 3 (see FIG. 2(b)). The tubular body locking portion 4 also has a tubular body adhesive layer 40 that holds the tubular body T on its outer surface when in use. The tubular body locking portion 4 also has a non-adhesive portion 41 where the tubular body adhesive layer 40 is not formed, at least at one end in the longitudinal direction of the tubular body T (hereinafter simply referred to as the "longitudinal direction"), at a position where it overlaps with the tubular body T in the inward/outward direction (the up-down direction in FIG. 2(b)) when in use (see FIG. 3 and FIG. 6(b)).

As shown in FIG. 2(b), the tubular body locking portion 4 of this embodiment is sheet-shaped, and specifically extends in the longitudinal direction and in a width direction perpendicular to the longitudinal direction (hereinafter simply referred to as the width direction) on the inner layer portion 2. In addition, the dimension in the width direction of the tubular body locking portion 4 of this embodiment is preferably larger than the outer diameter of the tubular body T to be fixed to the tubular body fixing device 1.

The tubular body engaging portion 4 in this embodiment is formed only of the adhesive layer 40 for the tubular body (so-called base layer-less), but the tubular body engaging portion 4 may be a double-sided tape in which an adhesive layer different from the adhesive layer 40 for the tubular body is provided on the inside of the base layer and the adhesive layer 40 for the tubular body is provided on the outside of the base layer.

The adhesive layer 40 for the tubular body is formed, for example, on the inner layer 2 (specifically, the base layer 21 of the inner layer 2, which will be described later). As shown in FIG. 3, the adhesive layer 40 for the tubular body has one edge 42, which is the edge of the leading separation side (described later) of the tubular body engaging portion 4, and the other edge 43, which is the edge opposite the leading separation side of the tubular body engaging portion 4. Both the one edge 42 and the other edge 43 are linear. Also, the one edge 42 and the other edge 43 extend along the longitudinal direction.

In the tubular body fixing device 1 of this embodiment, the non-adhesive portion 41 is a notch 410 formed in the tubular body adhesive layer 40 together with the base material layer 21 of the inner layer portion 2. In this tubular body fixing device 1, one end edge 42 is hung on the notch 410, so that the length of the one end edge 42 in the longitudinal direction is shorter than the length of the other end edge 43 in the longitudinal direction.

For example, a pair (two) of notches 410 are arranged on both sides in the longitudinal direction. In this tubular body fixing device 1, each notch 410 has the same shape, and each notch 410 has a symmetrical shape in the longitudinal direction. Note that one notch 410 may be arranged on one side in the longitudinal direction.

The non-adhesive portion 41 does not have to be a notch 410, but may simply be a portion where no adhesive is provided (for example, a portion where the surface of the base material layer 21 of the inner layer portion 2 is exposed).

The outer layer 3 can cover the tubular body engaging portion 4 and the tubular body T held by the tubular body adhesive layer 40 from the outside (see FIG. 2(b)). For example, the base material layer 33 of the outer layer 3 is a sheet that covers the inner layer 2, the tubular body T, and the tubular body engaging portion 4, and is, for example, a mesh sheet to improve breathability. The outer layer 3 of this embodiment is an adhesive bandage, for example, an adhesive bandage with a base material layer of a nonwoven fabric such as Kino White (registered trademark of Nitto Denko Corporation, the same applies below).

In addition, the outer layer 3 has a polymerization adhesive layer 31 on the inner surface 30 during use. Specifically, the outer layer 3 has a base layer 33 and a polymerization adhesive layer 31 disposed on the inside of the base layer 33.

The outer layer 3 has a polymerization adhesive layer 31 at least in the region of the inner surface 30 that is located above the tubular body engaging portion 4 when attached to the tubular body engaging portion 4. In the tubular body fixing device 1 of this embodiment, the polymerization adhesive layer 31 is continuous across the entire horizontal area of the outer layer 3, so that the entire inner surface 30 of the outer layer 3 is an adhesive surface. The polymerization adhesive layer 31 does not need to contain a glue that can be attached to the skin, but it preferably contains an odorless glue in consideration of the comfort of the patient when using it.

The outer layer 3 has a notch 32 penetrating in the inward/outward direction in a portion that overlaps with the non-adhesive portion 41 in the inward/outward direction when in use (see FIG. 1). Note that instead of the notch 32, the outer layer 3 may have a cut (slit) penetrating in the inward/outward direction in a portion that overlaps with the non-adhesive portion 41 in the inward/outward direction when in use. This notch 32 or cut extends, for example, along the longitudinal direction of the tubular body T.

In the tubular body fixing device 1 of this embodiment, a pair (two) of notches 32 are provided on both sides in the longitudinal direction. Each notch 32 has a symmetrical shape in the longitudinal direction. Note that one notch 32 may be provided on one side in the longitudinal direction.

The notch 32 has, for example, an elongated shape, specifically, a substantially semi-elliptical shape. Note that the notch 32 may have other shapes, such as a rectangular shape or a triangular shape.

The notch 32 also has an asymmetric shape in the width direction perpendicular to the longitudinal direction of the tubular body T. Specifically, in the notch 32, the inclination of the first side 321 in the width direction is gentler than the inclination of the second side 322 in the width direction. In the tubular body fixing device 1 of this embodiment, when the outer layer portion 3 overlaps the inner layer portion 2, the first side 321 with a gentle inclination in the width direction is disposed on the side in the width direction closer to the connection portion between the outer layer portion 3 and the inner layer portion 2, which will be described later.

In this tubular body fixing device 1, the non-adhesive portion 41 in the tubular body engaging portion 4 is formed at a position close to one end edge (edge on the first separation side) 42 of the tubular body engaging portion 4, which is the first to separate from the tubular body engaging portion 4 when the outer layer portion 3 is peeled off from the tubular body engaging portion 4 in the width direction perpendicular to the longitudinal direction of the tubular body T (see FIG. 3). Specifically, the center C4 in the width direction of the non-adhesive portion 41 (e.g., a center line extending in the longitudinal direction through the tip edges of the notches 410; in this embodiment, a center line connecting the tip edges of a pair of notches 410) is closer to one end edge 42 of the tubular body engaging portion 4 than to the other end edge (edge opposite to the first separation side) 43 of the tubular body engaging portion 4.

In this way, in the tubular body engaging portion 4, the non-adhesive portion 41 is formed biased toward the leading separation side in the width direction, so that the width dimension of the tubular body adhesive layer 40 located between the leading separation side edge 42 and the tubular body T aligned with the center C4 can be reduced. In addition, since the area of the tubular body adhesive layer 40 is reduced and the adhesive strength is reduced by the amount of the reduction in the width dimension of the tubular body engaging portion 4, the outer layer portion 3 can be easily peeled off from the tubular body engaging portion 4 when replacing the tubular body fixing device 1, etc.

In the tubular body fastener 1 of this embodiment, the non-adhesive portion 41 of the tubular body fastener 4 is a notch 410 that penetrates the tubular body fastener 4 in the inward and outward directions. The shape of the notch 410 of the tubular body fastener 4 matches the shape of the notch 32 of the outer layer 3. This enhances the aesthetic appearance of the tubular body fastener 1.

Furthermore, in the tubular body fixing device 1 of this embodiment, the edge 42 on the leading edge of the tubular body engaging portion 4 is provided on the leading edge of the center C4 in the width direction of the non-adhesive portion 41. This allows the tubular body adhesive layer 40 to come into contact with the tubular body T located approximately in line with the center C4 in the width direction of the non-adhesive portion 41, so that the tubular body T can be securely held by the tubular body engaging portion 4.

The patch portion 8 is a sheet that is placed further outside the outer layer portion 3 during use (see FIG. 1). By attaching the patch portion 8 to the outside of the outer layer portion 3 and thickening the sheet that covers the tubular body engaging portion 4, the outer layer portion 3 can be reinforced.

For example, the patch portion 8 is a mesh sheet to improve breathability. In this embodiment, the patch portion 8 is an adhesive bandage made of the same material as the outer layer portion 3, for example, an adhesive bandage with a base layer made of a nonwoven fabric such as Kinowhite (registered trademark of Nitto Denko Corporation, the same applies below).

The patch portion 8 also has an adhesive layer 81 on the inner surface 80 when in use (see FIG. 2(a)). For example, the patch portion has a base layer 82 and an adhesive layer 81 disposed on the inner side of the base layer 82.

In the tubular body fixing device 1 of this embodiment, a pair (two) of patch parts 8 are provided. The pair of patch parts 8 are lined up in the longitudinal direction. The pair of patch parts 8 are integrated, and a cut line L1 such as a perforation is provided at the boundary between them. Note that one patch part 8 may be provided, or three or more patch parts 8 may be provided.

In addition, in this tubular body fixing device 1, the outer layer 3 and the patch part 8 are integrated before use (see FIG. 1). Specifically, the outer layer 3 and the patch part 8 are continuous with a cut line L2 such as a perforation provided at the boundary between them.

Furthermore, the outer layer portion 3 has a peeling end 34 (in this embodiment, a triangular peeling end 34) on the cut line L2. The peeling end 34 may have a shape other than a triangle, for example, a semicircular shape. The peeling end 34 protrudes from the patch portion 8 toward the outer layer portion 3, but may also have a shape that is embedded in the patch portion 8. The peeling end 34 of the patch portion 8 serves as a trigger for starting to peel off the patch portion 8 when replacing the tubular body fixing device 1 after use.

The inner layer 2 is a sheet that can be applied to the skin (see FIG. 2(a)). The inner layer 2 also has a skin adhesive layer 20 on its inner surface that adheres to the skin when in use. The inner layer 2 in this embodiment is an adhesive bandage, for example an adhesive bandage that uses a nonwoven fabric such as kino white as the outer layer 3 as a base layer. In addition to the skin adhesive layer 20, the inner layer 2 has a base layer 21 that is placed on the outside of the skin adhesive layer 20.

In the inner layer 2 of this embodiment, no adhesive layer is formed on the outside of the base layer 21. In other words, the inner layer 2 has an adhesive surface on one side (inner surface). The skin adhesive layer 20 contains a glue that can be applied to the skin and is unlikely to cause rashes, etc., and preferably contains an odorless glue, for example, in consideration of the comfort when used by the patient.

In addition, one end 22 of the inner layer portion 2 in the width direction (left-right direction in FIG. 2(a)) perpendicular to the longitudinal direction of the tubular body T is integrated with the outer layer portion 3 before use. In the tubular body fixing device 1 of this embodiment, in order to simplify manufacture, the inner layer portion 2 is formed separately from the outer layer portion 3, and one end 22 of the inner layer portion 2 is attached to the outer layer portion 3 to be integrated with the outer layer portion 3 before use. Specifically, the portion constituting one end 35 of the polymerization adhesive layer 31 of the outer layer portion 3 is attached to the outer surface 23 of the inner layer portion 2, so that the outer layer portion 3 is connected to the inner layer portion 2.

Furthermore, the other end 24 in the width direction of the inner layer portion 2 becomes the leading separation side. This allows the tubular body fixing device 1 to be configured as a single unit. Specifically, since the tubular body fixing device 1 before use is in the form of a single sheet, the tubular body fixing device 1 is easy to use and easy to manage before use. In addition, the peeling direction of the outer layer portion 3 from the tubular body engaging portion 4 can be made constant.

In the tubular body fixing device 1 of this embodiment, the outer layer 3 is separated from the outer surface 23 of the inner layer 2 in a region other than one end 35 in the horizontal direction before the tubular body T is fixed. In addition, an outer layer release liner 6 is disposed in a region other than one end 35 in the horizontal direction of the outer layer 3 before the tubular body T is fixed.

The inner layer 2 and the outer layer 3 may be formed integrally. For example, a sheet of adhesive bandage (e.g., Kino White) may be folded with the tubular body adhesive layer 40 on the inside, so that the inner layer 2 and the outer layer 3 are integrated before use. In this case, the tubular body fixing device 1 may be attached to the skin by providing an adhesive layer different from the tubular body adhesive layer 40 on the outer surface 23 of the inner layer 2.

The inner layer portion 2 has a notch 25 corresponding to the outer layer portion 3 in the portion that overlaps with the outer layer portion 3 in the inward-outward direction when in use (see FIG. 3). Note that instead of the notch 25, the inner layer portion 2 may have a cut (slit) corresponding to the outer layer portion 3 in the portion that overlaps with the outer layer portion 3 in the inward-outward direction when in use. In this way, by providing the cutout 25 or cut in the inner layer portion 2 that adheres to the skin, the edge length of the inner layer portion 2 can be increased, and the inner layer portion 2 can be attached more firmly to the skin.

The inner layer release liner 5, the outer layer release liner 6, and the locking portion release liner 7 are protective materials for the adhesive surface of the skin adhesive layer 20 of the inner layer 2, the adhesive surface of the polymerization adhesive layer 31 of the outer layer 3, the adhesive surface of the tubular body adhesive layer 40 of the tubular body locking portion 4, and the adhesive layer 81 of the patch portion 8, respectively, and are, for example, release papers (see FIG. 2(a)).

The inner layer release liner 5 has a slit 50 extending in the longitudinal direction (see FIG. 1). This allows the inner layer release liner 5 to be easily peeled off from the inner layer 2. In addition, by partially peeling off the inner layer release liner 5, the inner layer 2 can be partially attached to the skin, and then the remaining inner layer release liner 5 can be peeled off to attach the entire inner layer 2 to the skin, i.e., the inner layer 2 can be temporarily fixed. The slit 50 is, for example, disposed at a position that overlaps in the inner and outer directions with respect to the center of the inner layer 2 in the horizontal direction. In the tubular body fixing device 1 of this embodiment, the inner layer release liner 5 includes a first region 51 and a second region 52 separated by the slit 50.

In this inner layer release liner 5, a different number of notches 500 (e.g., triangular notches) are formed on the outer periphery of the first region 51 and on the outer periphery of the second region 52. The number of notches 500 formed on each outer periphery indicates the order in which the regions 51, 52 are peeled off. In this embodiment, the regions 51, 52 are peeled off in order of the number of notches 500. A configuration in which such notches 500 are formed in each region 51, 52 is advantageous because the order in which the regions 51, 52 are peeled off can be grasped by touch and is easy to understand.

The shape of the notch 500 may be different, such as a shallower notch than the notch 500 in the tubular body fixing device 1 of this embodiment. Also, in the inner layer release liner 5, a mark other than the notch 500, such as a slit or unevenness, may be provided to indicate the order in which the regions 51 and 52 are to be peeled off. Also, each region 51 and 52 may be printed with a mark indicating the order in which the regions 51 and 52 are to be peeled off.

In the tubular body fixing device 1 of this embodiment, the inner layer release liner 5 extends outward beyond the inner layer 2 when viewed in a plan view from a direction approximately perpendicular to the outer layer 3. That is, the area of the inner layer release liner 5 is larger than the area of the inner layer 2, and the outer peripheral edge of the inner layer release liner 5 is located outside the outer peripheral edge of the inner layer 2. This makes it easy to peel the inner layer release liner 5 from the inner layer 2. The inner layer release liner 5 has the same area as the inner layer 2, and the outer peripheral edge of the inner layer release liner 5 may overlap the outer peripheral edge of the inner layer 2.

The outer layer release liner 6 has a slit 60. This makes it easy to peel the outer layer release liner 6 from the outer layer 3. The slit 60 is arranged, for example, at a location that overlaps with the slit 50 of the inner layer release liner 5 in the inward/outward direction. In the tubular body fixing device 1 of this embodiment, the outer layer release liner 6 includes a first region 61 and a second region 62 that are separated by the slit 60.

In addition, the release liner 7 of the locking portion has a notch 70 (see FIG. 3). This notch 70 has the same shape as the notch 410 of the tubular body locking portion 4.

For example, a pair (two) of notches 70 are provided on both sides in the longitudinal direction. Also, each notch 70 has a symmetrical shape in the longitudinal direction. Note that one notch 70 may be provided on one side in the longitudinal direction.

The notch 70 has, for example, an elongated shape, specifically, a substantially semi-elliptical shape. Note that the notch 70 may have other shapes, such as a rectangular shape or a triangular shape.

The notch 70 also has an asymmetric shape in the width direction perpendicular to the longitudinal direction of the tubular body T. Specifically, in the notch 70, the inclination of the first side 71 in the width direction is gentler than the inclination of the second side 72 in the width direction. In the tubular body fixing device 1 of this embodiment, when the outer layer portion 3 overlaps the inner layer portion 2, the first side 71 with the gentle inclination in the width direction is disposed on the side closer to the connection portion between the outer layer portion 3 and the inner layer portion 2 in the width direction.

The longitudinal dimensions of both ends 73, 74 of the locking portion release liner 7 in the width direction are approximately the same. Both ends 73, 74 are straight. Both ends 73, 74 also extend along the longitudinal direction.

In the tubular body fixing device 1 of this embodiment, the locking portion release liner 7 extends outward beyond the tubular body locking portion 4 when viewed in a plan view from a direction substantially perpendicular to the outer layer portion 3. That is, the area of the locking portion release liner 7 is larger than the area of the tubular body locking portion 4, and the outer peripheral edge of the locking portion release liner 7 is located outward beyond the outer peripheral edge of the tubular body locking portion 4. This makes it easy to peel the locking portion release liner 7 from the tubular body locking portion 4. Note that the locking portion release liner 7 has the same area as the tubular body locking portion 4, and the outer peripheral edge of the locking portion release liner 7 may overlap the outer peripheral edge of the tubular body locking portion 4.

In the above tubular body fixing device 1, the notch 410 of the tubular body engaging portion 4 is sized so that the tubular body fixing device 1 can adequately fix the tubular body T. Below, multiple samples of the tubular body fixing device 1 with different longitudinal dimensions of the notch 410 of the tubular body engaging portion 4 were prepared, and a test was conducted to measure the fixing force of the tubular body T (specifically, the force applied when the tubular body T is pulled).

In the tubular body fixing device 1, the longitudinal and width dimensions of the inner layer portion 2 are both 75 mm. The width dimensions of the notches 410 are both 10 mm. In this tubular body fixing device 1, notches 410 are provided on both sides in the longitudinal direction, and samples were prepared in which the longitudinal dimensions of the notches 410 were varied to 0 mm, 5 mm, 10 mm, 15 mm, 20 mm, 23 mm, and 25 mm.

The test is performed by attaching a sample (tubular body fixing device 1) to the adherend (Bakelite plate), fixing a tubular body T (outer diameter 3.3 mm or outer diameter 6.3 mm) to the tubular body fixing device 1, and pulling it at 1000 mm/min in a tensile direction of 90° using a tensile testing machine TENSILON (ORIENTEC RTC-1210A) (a method to read the maximum value). Specifically, this method of reading the maximum value is a method of reading the numerical value when the tubular body T comes off due to peeling or floating of the tubular body fixing device 1. When attaching the tubular body fixing device 1, the tubular body fixing device 1 is made to blend with the adherend and the entire tubular body T, just as in actual use.

As a result of the test, when the outer diameter of the tubular body T was 3.3 mm, the fixing force was 15 N, 27 N, 29 N, 28 N, 28 N, 25 N, and 22 N when the longitudinal dimension of the notch 410 was 0 mm, 5 mm, 10 mm, 15 mm, 20 mm, 23 mm, and 25 mm, respectively. Also, when the outer diameter of the tubular body T was 6.3 mm, the fixing force was 20 N, 24 N, 31 N, 31 N, 33 N, 29 N, and 28 N when the longitudinal dimension of the notch 410 was 0 mm, 5 mm, 10 mm, 15 mm, 20 mm, 23 mm, and 25 mm, respectively.

As a result, it was found that since it is preferable that the tubular body fixing device 1 can fix the tubular body T with a fixing force of 22 N or more, when the notches 410 are formed on both sides in the longitudinal direction of the tubular body fixing device 1, the longitudinal dimension of the notches 410 is preferably 5 mm or more and 25 mm or less, that is, it is preferably 5% or more and 35% or less of the longitudinal dimension of the inner layer portion 2. Furthermore, since it is even more preferable that the tubular body fixing device 1 can fix the tubular body T with a fixing force of 25 N or more, it was found that it is even more preferable that when the notches 410 are formed on both sides in the longitudinal direction of the tubular body fixing device 1, the longitudinal dimension of the notches 410 is more preferably 10 mm or more and 23 mm or less, that is, it is even more preferable that it is 10% or more and 31% or less of the longitudinal dimension of the inner layer portion 2.

When the notch 410 is formed on one side in the longitudinal direction of the tubular body fixing device 1, the longitudinal dimension of the notch 410 may be longer than the longitudinal dimension of the notch 410 when the notch 410 is formed on both sides in the longitudinal direction of the tubular body fixing device 1.

In addition, the dimension of the portion of the tubular body engaging portion 4 adjacent to the notch 410 in the longitudinal direction is preferably 10% to 75% of the longitudinal dimension of the inner layer portion 2, and more specifically, it is desirable for it to be 25% to 70%.

The following is a detailed description of how to use the tubular body fixing device 1. First, we will explain how to fix the tubular body T using the tubular body fixing device 1, and then we will explain how to remove the tubular body T from the tubular body fixing device 1.

When fixing the tubular body T with the tubular body fixing device 1, first, the first region 51 of the inner layer release liner 5 is peeled off and removed from the inner layer 2 of the tubular body fixing device 1. Then, as shown in FIG. 4(a), a part of the inner layer 2 (specifically, the region including one end 22 in the horizontal direction of the inner layer 2) is applied to the skin while the second region 52 of the inner layer release liner 5 remains attached. After that, the second region 52 of the inner layer release liner 5 is peeled off and removed, and the remaining part of the inner layer 2 (specifically, the region including the other end 24 in the horizontal direction of the inner layer 2) is applied to the skin as shown in FIG. 4(b).

Next, as shown in FIG. 4(c), the outer layer 3 is opened to expose the outer surface 23 of the inner layer 2, and the locking portion release liner 7 is peeled off and removed from the tubular body locking portion 4 as shown in FIG. 4(d). In this case, in the tubular body fixing device 1 of this embodiment, the first edge 71, which has a gentle slope relative to the peeling direction, is positioned on the side closer to the connection portion between the outer layer 3 and the inner layer 2, so that when the locking portion release liner 7 is peeled off from the side farther from this connection portion, it is easy to peel off the locking portion release liner 7 from the tubular body locking portion 4.

Next, as shown in FIG. 5(a), the tubular body T is placed on the tubular body adhesive layer 40 of the tubular body engaging portion 4. At this time, the tubular body T is fixed to the inner layer portion 2 by the adhesive force of the tubular body adhesive layer 40 of the tubular body engaging portion 4. This allows the tubular body T to be temporarily fixed to the inner layer portion 2. In this tubular body fixing device 1, the tubular body T is placed at the position of the notch 410.

Furthermore, as shown in FIG. 5(b), the first region 61 of the outer layer release liner 6 is peeled off and removed from the outer layer 3, and then as shown in FIG. 5(c), the second region 62 of the outer layer release liner 6 is peeled off and removed from the outer layer 3. At this time, in the tubular body fixing device 1 of this embodiment, the first side 321, which has a gentle inclination with respect to the peeling direction, is positioned on the side closer to the connection portion between the outer layer 3 and the inner layer 2, so that it is easy to peel off the outer layer release liner 6 from the outer layer 3.

In addition, in this tubular body fixing device 1, the first region 61 and the second region 62 of the outer layer release liner 6 are peeled off from the outer layer portion 3, and then the patch portion 8 is separated from the outer layer portion 3. Note that the patch portion 8 may be separated from the outer layer portion 3 before the first region 61 and the second region 62 of the outer layer release liner 6 are peeled off from the outer layer portion 3. For example, the patch portion 8 may be separated from the outer layer portion 3 immediately after the tubular body T is temporarily fixed to the inner layer portion 2, and then the first region 61 and the second region 62 of the outer layer release liner 6 may be peeled off from the outer layer portion 3.

Next, as shown in FIG. 6(a), the tubular body T is sandwiched between the polymerization adhesive layer 31 of the outer layer portion 3 and the tubular body adhesive layer 40 of the tubular body engaging portion 4, and the outer layer portion 3 is overlapped from the outside onto the inner layer portion 2. Finally, as shown in FIG. 6(b), the patch portion 8 is overlapped from the outside onto the outer layer portion 3, thereby fixing the tubular body T between the inner layer portion 2 and the outer layer portion 3. In this tubular body fixing device 1, the pair of patch portions 8 are arranged side by side in the longitudinal direction.

The following describes how to remove the tubular body T from the tubular body fixing device 1. First, as shown in FIG. 7(a), the tubular body T is fixed to the tubular body fixing device 1, and then the outer layer 3 is peeled off from the tubular body T as shown in FIG. 7(b) and FIG. 7(c). In the tubular body fixing device 1 of this embodiment, the outer layer 3 is provided with a peeling end 34, so that when peeling the outer layer 3 from the tubular body T, the outer layer 3 can be easily peeled off from the peeling end 34.

Furthermore, as shown in FIG. 8(a), the outer layer 3 is peeled off until the tubular body T is exposed. In this tubular body fixing device 1, the non-adhesive portion 41 is formed in the tubular body engaging portion 4 so as to be biased toward the leading separation side in the width direction, and the tubular body T is positioned at the position of the notch 410, so that when the outer layer 3 is peeled off, only the tubular body T is exposed. By peeling off the outer layer 3 in this manner, the tubular body T exposed from the outer layer 3 can be removed from the tubular body fixing device 1 as shown in FIG. 8(b).

The tubular body fixing device of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, the configuration of one embodiment can be added to the configuration of another embodiment, and part of the configuration of one embodiment can be replaced with the configuration of another embodiment. Furthermore, part of the configuration of one embodiment can be deleted.

In the above embodiment, the tubular body engaging portion 4 is in the form of a sheet, but it may be in other shapes, such as a plurality of spaced apart dots or stripes.

Other than the shape and configuration of the tubular body adhesive layer 40 of the tubular body engaging portion 4 in the tubular body fixing device 1, the tubular body may be different from that of the above embodiment. In addition, other than the shape and configuration of the inner layer release liner 5, the tubular body may be different from that of the above embodiment.

Furthermore, the tubular body fixing device 1 does not have to include at least one of the inner layer portion 2, the inner layer portion release liner 5, the outer layer portion release liner 6, the locking portion release liner 7, the patch portion 8, and the patch portion release liner 9. Furthermore, the shapes of the inner layer portion release liner 5, the outer layer portion release liner 6, the locking portion release liner 7, and the patch portion release liner 9 are not limited to the shapes in the tubular body fixing device 1 of the above embodiment.

1...tubular body fixing device, 2...inner layer portion, 3...outer layer portion, 4...tubular body locking portion, 5...inner layer release liner (release liner), 6...outer layer release liner (release liner), 7...locking portion release liner (release liner), 8...patch portion, 9...patch portion release liner (release liner), 20...skin adhesive layer, 21...base layer, 22...one end portion, 23...outer surface, 24...other end portion, 30...inner surface, 31...polymerization adhesive layer, 32...notch, 33...base layer, 34...release end portion, 35...one end portion, 40...tubular body adhesive layer, 41 ...non-adhesive portion, 42...one edge (edge on the leading edge), 43...other edge (edge opposite to leading edge), 50...slit, 51...first region (region), 52...second region (region), 60...slit, 61...first region, 62...second region, 71...first edge, 72...second edge, 73, 74...edge, 80...inner surface, 81...adhesive layer, 82...base layer, 101...tubular body fixing device, 102...lower layer, 103...upper layer, 104...tubular body locking portion, 321...first edge, 322...second edge, C4...center, L1, L2...cutting line, T...tubular body

Claims (4)

A tubular body fixing device capable of fixing a tubular body onto the skin,
a tubular body fastening part which is a sheet-like part located on the inside when in use and has an adhesive layer for a tubular body on its outer surface for holding the tubular body when in use;
an outer layer portion which is a sheet-like portion located on the outside when in use, capable of covering from the outside the tubular body locking portion and the tubular body held by the pressure-sensitive adhesive layer for the tubular body, and has a pressure-sensitive adhesive layer for polymerization on its inner surface when in use ;
an inner layer portion which is a sheet-like portion disposed inside the outer layer portion so as to sandwich the tubular body engaging portion and has an inner surface having a skin adhesive layer which adheres to the skin during use;
the tubular body engaging portion has a non-adhesive portion on at least one end portion in the longitudinal direction of the tubular body, the non-adhesive portion being located at a position where the tubular body engaging portion overlaps with the tubular body in the inward and outward directions during use, and where the tubular body adhesive layer is not formed;
the outer layer portion has a notch or cut extending in an inward/outward direction at a portion that overlaps with the non-adhesive portion in an inward/outward direction during use,
One end of the inner layer portion in a width direction perpendicular to the longitudinal direction is integrated with the outer layer portion before use,
the other end of the inner layer portion in the width direction is a first separation side that is a side that separates first from the tubular body engaging portion when the outer layer portion is peeled off from the tubular body engaging portion in the width direction,
A tubular body fixing device in which the position at which the non-adhesive portion is formed in the tubular body engaging portion is such that the center in the width direction of the non-adhesive portion is closer to the end edge of the tubular body engaging portion on the distal end side than to the end edge opposite the distal end side of the tubular body engaging portion. The non-adhesive portion is a notch penetrating the tubular body engaging portion in an inward/outward direction,
The tubular body fixing device according to claim 1 , wherein the outer layer portion has a notch penetrating in the inward and outward direction in a portion that overlaps with the non-adhesive portion in the inward and outward direction during use. The tubular body fixing device according to claim 1 or 2, wherein the edge of the tubular body engaging portion on the leading edge is located on the leading edge side of the center of the width direction of the non-adhesive portion. The tubular body fastener according to claim 1 , wherein the inner layer portion has a notch or cut corresponding to the outer layer portion in a portion that overlaps the outer layer portion in the inner-outer direction during use.