Nasal Adapter

Abstract

To solve the problem that for some patients to whom a nasal adapter is attached, it may be easier to perform treatment if a mouth expiratory guide is not present, in this respect, there is room for further improvement in conventional nasal adapters.SOLUTION: Provided is a nasal adapter that includes a first portion and a second portion, wherein the first portion includes: a mouth exhalation guide portion having a facing portion facing a mouth of a living body and formed with a mouth-side guide path for guiding exhaled breath exhaled from the mouth to the facing portion; a base portion disposed above the mouth exhalation guide portion with respect to the living body; and a cuttable portion integrally formed with the mouth exhalation guide portion and the base portion. The cuttable portion disconnectably connects the mouth exhalation guide portion to the base portion. The base portion is fixed to the second portion. The first portion is detachably connected to the second portion at a connecting section below the cuttable portion with respect to the living body.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a nasal adapter, and more particularly to a nasal adapter for measuring exhaled air from the mouth or nose of a living body. [Background technology]

[0002] Nasal adapters for measuring exhaled breath from the mouth or nose of a living body have been put into practical use. The nasal adapter is attached to the face of the living body and includes, for example, an attachment part for attaching a sensor for measuring the concentration of carbon dioxide contained in the exhaled breath, and a mouth-exhaled breath guide part disposed below the attachment part so as to face the mouth. The mouth-exhaled breath guide part is configured to guide the exhaled breath toward the sensor, allowing the sensor to sequentially measure the concentration of carbon dioxide contained in the exhaled breath. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2020-92749 Summary of the Invention [Problem to be solved by the invention]

[0004] Conventional nasal adapters capable of measuring exhaled gas concentrations from the mouth have a base to which a gas sensor can be attached, connected to a mouth-operated exhalation guide unit that collects exhaled gas from the mouth, and the gas concentration is detected at the base. This nasal adapter allows the position of the mouth-operated exhalation guide unit to be moved by connecting the base and the mouth-operated exhalation guide unit with a support shaft. However, connecting the mouth-operated exhalation guide unit to the base via a support shaft requires the base, mouth-operated exhalation guide unit, and support shaft to be manufactured separately, resulting in an increase in the number of components. In Patent Document 1, which was previously filed, a mechanism was realized that integrally connects the base and the mouth-operated exhalation guide unit and allows the distance between the mouth and the mouth to be adjusted.

[0005] However, depending on the patient to whom the nasal adapter is attached, there are cases in which treatment is easier without the mouth expiratory guide portion. In this respect, there is room for improvement in the nasal adapter of Patent Document 1. [Means for solving the problem]

[0006] A nasal adapter according to one embodiment of the present invention comprises a first part and a second part, the first part having an opposing part facing the mouth of a living body, a mouth-side guide path formed to guide exhaled air from the mouth to the opposing part, a base part positioned above the mouth-side guide path of the mouth-side guide path relative to the living body, and a detachable part formed integrally with the mouth-side guide path of the mouth-side guide path, the detachable part detachably connecting the mouth-side guide path to the base, the base part being fixed to the second part, and the first part being detachably connected to the second part at a connecting part below the detachable part relative to the living body. [Effects of the Invention]

[0007] By making the structure such that the mouth exhalation guidance section is molded integrally with the base, the productivity of the product and prevention of it falling off during use are maintained, while the surgeon or other user can cut the cuttable section as needed to remove the mouth exhalation guidance section from the base and use the nasal adapter. [Brief explanation of the drawings]

[0008] [Figure 1] 1A and 1B are diagrams showing a nasal adapter applied to a living body in an embodiment of the present invention. [Figure 2] 3 is a diagram showing a first portion of the nasal adapter according to the embodiment of the present invention as viewed obliquely from above and front. FIG. [Figure 3] FIG. 2 is a view of the first portion of the nasal adapter according to the embodiment of the present invention, viewed from the right. [Figure 4] 3 is an enlarged perspective view of a cuttable portion of the first part of the nasal adapter according to the embodiment of the present invention. FIG. [Figure 5] FIG. 4 is a front view of a second portion of the nasal adapter according to the embodiment of the present invention. [Figure 6] FIG. 2 is a perspective view of a nasal adapter according to an embodiment of the present invention. [Figure 7] FIG. 2 is a longitudinal sectional view of a nasal adapter according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In this application, when the nasal adapter is attached to the face of a living body, the head direction of the face will be referred to as "up" and the chin direction as "down," and the direction the face faces will be referred to as "front," and the opposite direction will be referred to as "back." In addition, in drawings depicting the face of a living body, the right side will be referred to as "right" and the left side will be referred to as "left." These are the opposite of left and right as seen from the living body's perspective.

[0010] Fig. 1 shows the configuration of a respiratory management device equipped with a nasal adapter N according to an embodiment of the present invention. This respiratory management device is attached to the face F of a living subject, and includes the nasal adapter N, a pair of nasal cannulae 5, a fixing band 6, and a sensor S. Fig. 1 shows the state in which the nasal adapter N is applied to a living subject to measure exhaled breath.

[0011] The nasal adapter N has a first part 1 that is placed in front of the face F, and a second part 2 that is attached in front of the first part 1. The first section 1 has a nasal breath guide section 11 arranged to correspond to the nostrils NT of the living body, a mouth breath guide section 12 arranged to correspond to the mouth M of the living body, and a base section 13 arranged between the nasal breath guide section 11 and the mouth breath guide section 12. Here, the first section 1 is flexible and is integrally formed as a first member from a flexible material. Examples of flexible materials include vinyl chloride resin.

[0012] The nasal exhaled breath guide portion 11 guides the exhaled breath exhaled from the nostrils NT to the second portion 2, and is formed so as to branch and extend from the base portion 13 toward the two nostrils NT. The base 13 is disposed so as to extend in the left-right direction X relative to the living body, and is formed so that the second part 2 can be attached to the center of the base 13 so as to cover the center from the front. The base 13 is also formed so that the nasal cannulae 5 can be attached to the left and right sides, and so that the fixing bands 6 can be attached to the left and right sides. The mouth exhaled gas guide portion 12 guides the exhaled gas exhaled from the mouth M to the second portion 2, and is formed to extend in the front side of the mouth M in the up-down direction Y.

[0013] The second part 2 holds the sensor S that measures the exhaled breath guided from the nasal breath guide part 11 and the oral breath guide part 12, and is formed so that the sensor S can be attached and detached. The second part 2 is formed to have higher rigidity than the first part 1. The second part 2 is disposed in front of the base part 13 of the first part 1. The second part 2 is attached to the base part 13, and its rigidity supports the base part 13, which is made of a flexible material. The second part 2 can be made of, for example, a thermoplastic resin. This second part 2 constitutes a measuring member. The sensor S is attached to the second part 2 and optically measures the concentration of carbon dioxide contained in the exhaled air guided inside the second part 2. A sensor line SL extends from the sensor S and connects to the measurement device main body (not shown).

[0014] The pair of nasal cannulas 5 each have a tubular shape. To supply a predetermined gas to a living subject, one end of each of the pair of nasal cannulas 5 is attached to the left and right connection heads 133 of the base 13. The nasal cannulas 5 extend to a gas supply device (not shown) that supplies the predetermined gas, and the other end is connected to the gas supply device. The gas supply device may be, for example, an oxygen supply device. The nasal adapter N has a gap between the first portion 1 and the second portion 2, forming a gas supply port 3a that opens upward toward the nostril NT and a gas supply port 3b that opens downward toward the mouth M. Oxygen introduced into the base 13 by the nasal cannulas 5 is released around the nostril NT through the gas supply port 3a and around the mouth M through the gas supply port 3b. The fixing band portion 6 is for fixing the nasal adapter N to the face F of the living body, and extends so as to surround the periphery of the face F, with both ends attached to the base portion 13.

[0015] Next, we will explain in detail the configuration of the nasal adapter N. The nasal adapter N has a first section 1 and a second section 2, but we will first explain the first section 1. As shown in Figures 2 and 3, in the first section 1, the nasal breath guide section 11 is integrally connected to the upper part of the base section 13, and the oral breath guide section 12 is integrally connected to the lower part of the base section 13 via a detachable section 14.

[0016] 2, the base 13 has a central base 131 provided in the center in the left-right direction X, with supply spines 132 provided on the left and right of the central base 131, and a connection head 133 provided beyond the supply spines 132. The front surface of the supply spine 132 is inclined diagonally backward from the central base 131. The severable portions 14 are connected to the left and right sides of the lower part of the central base 131.

[0017] 3, the mouth exhalation guide section 12 is composed of, from the top, a connecting section 121, a bendable section 122, and an opposing section 123, and the connecting section 121 is connected to the severable section 14. The base 13 has connecting heads 133 on the left and right, and each connecting head 133 has two upper fixing holes 13a and a cannula hole 13b for connecting a nasal cannula 5. In addition, each of the two connecting sections 121 has a lower fixing hole 12a.

[0018] As shown in FIG. 2, the connection portions 121 are respectively disposed on a pair of side portions of the mouth exhalation guide portion 12 and are integrally connected to the base portion 13 via the severable portions 14. The mouth exhalation guide portion 12 is connected to the base portion 13 only by the pair of severable portions 14, and the portion between them is not connected and is separated from the base portion 13. The severable portions 14 severably connect the mouth exhalation guide portion 12 to the base portion 13 at two locations, left and right, above the living body, of the mouth exhalation guide portion 12. Furthermore, as shown in FIG. 3, each of the two connection portions 121 is connected to the opposing portion 123 by a bendable portion 122 at the rear, and is separated from the opposing portion 123 at other locations. Specifically, the portion between the connection portion 121 and the opposing portion 123 is formed so as to have an L-shaped cutout in the up-down direction Y and the front-back direction Z, leaving the bendable portion 122 at the rear. In the mouth exhalation guide portion 12, the connecting portion 121 is connected to the opposing portion 123 by a bendable portion 122 on the opposite side of the severable portion 14 as viewed from the connecting portion 121.

[0019] The facing portion 123 is formed in a cup shape that curves forward, and is disposed so as to face the mouth M of the living body. Here, the severable portion 14 is formed thinner than the base 13 and the connecting portion 121 adjacent to the connection, making it easy to sever. The severable portion 14 is formed narrower in the left-right direction X than the portions of the mouth-exhalation guide portion 12 and the base 13 adjacent to the severable portion 14. FIG. 4 is an enlarged oblique view of the dotted-line circle portion in FIG. 3 , showing the severable portion 14 more clearly. The severable portion 14 has a notch 14a that cuts forward from the portions of the mouth-exhalation guide portion 12 and the base 13 adjacent to the severable portion 14, and is formed so that it narrows diagonally downward and rearward from the top surface of the severable portion 14. The severable portion 14 may be made of a material more fragile than the mouth-exhalation guide portion 12 and the base 13, so that the mouth-exhalation guide portion 12 and the base 13 are severably connected. However, in this embodiment, the severable portion 14 is made of the same material as the mouth-exhalation guide portion 12 and the base 13. The cuttable portion 14 has a thin portion with a small cross-sectional area, and is thin enough to be torn off by hand.

[0020] Next, the second part 2 of the nasal adapter N will be described. As shown in the front view of FIG. 5, the second part 2 has a pillar 21 provided at the center of the upper part, and blades 22 provided on the left and right sides thereof. The pillar 21 has a cylindrical shape and has an internal space, and its front surface is located forward of the front surfaces of the blades 22. When viewed from the front, the pillar 21 protrudes forward from the center of the blades 22. A body 23 is provided below the pillar 21. The body 23 has an internal space due to its arched shape that protrudes forward. The internal space of the body 23 is connected to the internal space of the pillar 21. Two upper fixing claws 221 are provided leftward from the left blade 22, and two upper fixing claws 221 are provided rightward from the right blade 22. Two lower fixing claws 231 are provided leftward and two rightward from the body 23. A total of four generally plate-shaped extensions 24 protrude forward from the top and bottom of the left and right sides of the pillar 21 in the vane section 22. Sensor engagement claws 25 protrude forward from the top and bottom of the pillar 21. A sensor S is positioned on the four extensions 24 so as to straddle the pillar 21, and is attached by engaging between two of the sensor engagement claws 25. Exhaled air is guided into the internal space of the pillar 21. Transparent windows 21a are provided on the left and right sides of the pillar 21, which allow infrared light from the sensor S to pass through and measure the carbon dioxide concentration from the amount of absorption of a specific wavelength in the exhaled air in the internal space of the pillar 21.

[0021] The first section 1 and the second section 2 are assembled and fixed to each other to form the nasal adapter N. When fixed, the four upper fixing claws 221 of the second section 2 are fitted into the upper fixing holes 13a of the first section 1. The four lower fixing claws 231 are fitted into the two lower fixing holes 12a. This fitting is performed by utilizing the flexibility of the first section 1. FIG. 6 is a perspective view of the assembled nasal adapter N. In FIG. 6, the periphery of the second section 2 corresponds to the first section 1. By fitting the four upper fixing claws 221 of the second section 2 into the upper fixing holes 13a of the first section 1, the first section 1 is fixed to the rigid second section 2 so as to be stretched laterally. By attaching the four lower fixing claws 231 to the two lower fixing holes 12a, the mouth exhalation guide section 12 is also fixed to the second section 2.

[0022] The space between the supply back 132 of the first section 1 and the vanes 22 of the second section 2 is open vertically, with a gas supply port 3a at the top and a gas supply port 3b at the bottom. FIG. 6 shows the gas supply port 3a. Although not shown in FIG. 6, the gas supply port 3b is located below the gas supply port 3a. A nasal cannula 5 is attached to the cannula hole 13b of the connection head 133 to supply gas. Gas supplied from the left and right changes direction in the space between the supply back 132 and the vanes 22 and is supplied near the nostrils NT and mouth M via the upper gas supply port 3a and the lower gas supply port 3b.

[0023] A U-shaped sensor S is attached to the front of the second section 2 so as to straddle the pillar section 21 from the sensor setting direction SS. The sensor S is sandwiched and engaged by two sensor engaging claws 25 between overhanging sections 24 provided at four locations on the front of the second section 2. Infrared rays from the sensor S pass through two windows 21a provided on the sides of the pillar section 21 and the exhaled air guided into the internal space of the pillar section 21, and an attenuation rate of a specific wavelength is obtained.

[0024] FIG. 7 shows a longitudinal cross-sectional view of the nasal adapter N taken along a plane perpendicular to the left-right direction X at the center of the left-right direction X. The column portion 21 of the second section 2 is cylindrical and has an internal space. The trunk portion 23 below the column portion 21 is arched and has an internal space. A protrusion 26 is provided at the lower end of the trunk portion 23, facing forward. A plurality of recesses 12b are provided behind the facing portion 123. As shown in FIG. 3, the facing portion 123 is connected to a connecting portion 121 fixed to the second section 2 by a bendable portion 122. Therefore, when the surgeon applies force to the facing portion 123, the bending of the bendable portion 122 changes, and the position of the recesses 12b with which the protrusions 26 engage moves. This allows the angle of the facing portion 123 relative to the second section 2, the base portion 13 of the first section 1, and the like to be changed. Changing the bending of the bendable portion 122 changes the orientation of the facing portion 123, thereby adjusting the distance between the living body's mouth M and the facing portion 123. The sensor S is attached from the sensor set direction SS.

[0025] Exhaled air B from the nostril NT passes through the nose-side guideway in the nasal exhalation guide section 11 and reaches the internal space of the pillar section 21. Exhaled air B from the mouth M passes through the mouth-side guideway, which is made up of the internal space of the body section 23, from the rear of the opposing section 123, and reaches the internal space of the pillar section 21. In the internal space of the pillar section 21, the gas concentration of exhaled air B is detected by the sensor S using infrared rays from the window section 21a.

[0026] Next, the operation of the embodiment will be described. First, as shown in Fig. 1, the nasal adapter N is fixed to the face F of the living subject by the fixing band 6. At this time, the nasal adapter N is fixed so that the nasal exhalation guide portion 11 is inserted into the nostril NT and the curved recessed side of the oral exhalation guide portion 12 faces the mouth M.

[0027] Here, the second portion 2 is arranged to cover a portion of the base 13. The second portion 2 supports the base 13 and the mouth expiratory breath guide 12 using the upper and lower fixed claws 221 and 231 shown in FIG. 5 , and also supports the nasal expiratory breath guide 11 arranged on the base 13. The nasal expiratory breath guide 11, the mouth expiratory breath guide 12, the base 13, and the severable portion 14, all of which are made of a flexible material, can be maintained in their proper positions. This allows the nasal expiratory breath guide 11, the mouth expiratory breath guide 12, the base 13, and the severable portion 14 to be integrally formed from a flexible material, thereby reducing the number of components and simplifying the nasal adapter N. Furthermore, the nasal expiratory breath guide 11 and the mouth expiratory breath guide 12 can be prevented from coming off the base 13 and falling. Furthermore, by forming the mouth expiratory breath guide 12 from a flexible material, damage to the skin caused by the mouth expiratory breath guide 12 coming into contact with the living body can be prevented.

[0028] The second portion 2 has higher rigidity than the nasal breath guide portion 11, the oral breath guide portion 12, and the base portion 13, and can therefore firmly support the nasal breath guide portion 11, the oral breath guide portion 12, and the base portion 13.

[0029] In this way, the posture of the nasal breath guide unit 11 inserted into the nostril NT is maintained, and the posture of the oral breath guide unit 12 arranged opposite the mouth M is also maintained. Next, as shown in Figure 7, the exhaled breath B exhaled from the nostril NT flows into the internal space of the pillar 21 from the nose-side guide path in the nasal breath guide unit 11. Also, the exhaled breath B exhaled from the mouth M is guided to the rear surface of the opposing part 123 and the rear surface of the body 23, and flows into the internal space of the pillar 21 through the mouth-side guide path. Then, the concentration of carbon dioxide contained in the inflowing exhaled breath B is measured by the sensor S.

[0030] When the subject or the like wants to bring the opposing part 123 of the mouth exhalation guide part 12 closer to the mouth M, the lower end of the opposing part 123 is moved backward. At this time, the bending of the bendable part 122 changes, and the gap between the connecting part 121 and the opposing part 123 opens.

[0031] 7, the position of recess 12b of facing part 123, with which protrusion 26 provided on the lower part of body 23 engages, changes, fixing the position of facing part 123. This maintains the posture of facing part 123, allowing the posture of facing part 123 to be changed in stages in accordance with various shapes of face F.

[0032] If the surgeon determines that the opposing portion 123 will hinder treatment, etc., he or she removes the connecting portion 121 from the lower fixing claws 231 and pulls it. This tears and cuts the two severable portions 14, allowing the opposing portion 123 to be removed. More specifically, when the surgeon places a finger behind the connecting portion 121 shown in FIG. 4 and pulls it outward, the severable portions 14 are torn off and the lower fixing claws 231 are removed from the lower fixing holes 12a. This causes one connecting portion 121 to detach from the second portion 2. After cutting one severable portion 14, the surgeon pulls the connecting portion 121 toward the other connecting portion 121, causing the other connecting portion 121 to detach from the second portion 2 and cut the other severable portion 14. Since the nasal exhaled breath guide portion 11 remains, the carbon dioxide concentration of the exhaled breath B from the nostril NT can be measured by the sensor S even after the opposing portion 123 is removed.

[0033] The connecting portion 121 is fixed to the second portion 2 by the lower fixing hole 12a. The base 13 is fixed to the second portion 2 by the upper fixing hole 13a. Therefore, even if the severable portion 14 formed between the connecting portion 121 and the base 13 has a structure that makes it easy to cut, if the connecting portion 121 is fixed to the second portion 2, it is difficult to cut.

[0034] Furthermore, bendable portion 122 connecting connecting portion 121 and opposing portion 123 is formed to be less likely to break than severable portion 14. In this embodiment, as shown in FIG. 4 etc., bendable portion 122 is thicker than severable portion 14. Although opposing portion 123 is not fixed to second portion 2, it is connected to connecting portion 121, which is fixed to second portion 2, by bendable portion 122, which is less likely to break, and therefore opposing portion 123 will not come off second portion 2 during normal use. On the other hand, when connecting portion 121 is detached from second portion 2 and opposing portion 123 is pulled, it is not cut at bendable portion 122 but at severable portion 14.

[0035] In the above embodiment, the nasal adapter N has the nasal exhalation guide portion 11, the base portion 13, the detachable portion 14, and the mouth exhalation guide portion 12, but the present invention is not limited to the embodiment as long as the mouth exhalation guide portion 12 is integrally connected to the base portion 13 by the detachable portion 14. For example, the nasal adapter N may be one that does not have the nasal exhalation guide portion 11 that is composed of the mouth exhalation guide portion 12, the base portion 13, and the detachable portion 14. In the embodiment, the first portion 1 and the second portion 2 are formed as separate bodies using different materials and then fixed together, but they may also be formed as an integrated body. When they are formed as an integrated body, they may be formed from the same material. In the embodiment, the opposing portion 123 side of the cuttable portion 14 is fixed to the second portion 2, but it may be made so that it can be easily torn off without being fixed.

[0036] In addition, in the embodiment, the angle of the opposing portion 123 is changeable by providing the bendable portion 122, the convex portion 26, the concave portion 12b, etc., but the angle may be changeable by other structures, or the angle of the opposing portion 123 may not be changeable. In the embodiment, the sensor S is attached to the nasal adapter N, but the exhaled air may be led from the nasal adapter N to a measuring device through a tube for measurement.

[0037] In addition, the specific configuration is not limited to the embodiments, and the present invention includes design changes within the scope of the gist of the present invention. Furthermore, the above-mentioned embodiments can be combined by utilizing each other's technologies as long as there are no particular contradictions or problems in the purpose, configuration, etc. [Explanation of symbols]

[0038] N Nasal adapter, 1 first part, 11 nasal exhalation guide part, 12 oral exhalation guide part, 121 connection part, 12a lower fixing hole, 122 bendable part, 123 opposing part, 12b recess, 13 base, 131 central base, 132 supply back part, 133 connection head, 13a upper fixing hole, 13b cannula hole, 14 severable part, 14a notch, 2 second portion, 21 pillar portion, 21a window portion, 22 wing portion, 221 upper fixing claw, 23 body portion, 231 lower fixing claw, 24 extension portion, 25 sensor engagement claw, 26 convex portion, 3a gas supply port, 3b gas supply port, 5 nasal cannula, 6 Fixing band part, F: face, NT: nostril, M: mouth, S: sensor, SL: sensor line, SS: sensor set direction, B: exhalation, X: left / right direction, Y: up / down direction, Z: front / back direction.

Claims

1. a first portion and a second portion; The first portion is a mouth exhaled breath guiding section having a facing section facing the mouth of the living body and having a mouth-side guide path formed therein for guiding exhaled breath from the mouth to the facing section; a base portion disposed above the mouth exhalation guide portion with respect to the living body; a severable portion integrally formed with the mouth exhalation guide portion and the base portion; and the severable portion severably connects the mouth exhalation guide portion to the base portion; the base is secured to the second portion; A nasal adapter characterized in that the first part is connected to the second part at a connecting part below the severable part with respect to the living body.

2. The nasal adapter according to claim 1, wherein the cuttable portion can be torn off due to its thinness.

3. 3. The nasal adaptor according to claim 2, wherein the cuttable portion has a notch on the side of the living body.

4. 4. The nasal adapter according to claim 2, wherein the cuttable portion is formed narrower in the left-right direction relative to the living body than the mouth exhalation guide portion and the portion of the base portion adjacent to the cuttable portion.

5. A nasal adapter as described in any one of claims 1 to 4, characterized in that the severable portion severably connects the mouth exhalation guide portion to the base at two locations, left and right, above the mouth exhalation guide portion with respect to the living body.

6. 6. The nasal adapter according to claim 1, wherein the connecting portions are provided on the left and right sides of the mouth exhalation guide portion with respect to the living body.

7. 7. The nasal adapter according to claim 1, wherein the connecting portion of the mouth exhalation guide portion is provided in the vicinity of the severable portion.

8. The mouth exhalation guide portion is connected to the opposing portion by a bendable portion on the opposite side of the connecting portion from the disconnectable portion, A nasal adapter as described in any one of claims 1 to 7, characterized in that the posture of the opposing part can be changed by changing the bending of the bendable part, thereby adjusting the distance between the mouth of the living body and the opposing part.

9. The nasal adapter according to claim 8, wherein the cuttable portion is formed to be more easily cut than the bendable portion.

10. A nasal adapter according to any one of claims 1 to 9, characterized in that the first part and the second part are formed separately, and the first part is removably connected to the second part at the connecting part.

11. The nasal adapter according to any one of claims 1 to 9, wherein the first portion and the second portion are integrally formed.

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