WO2014163110A2

WO2014163110A2 - Nasal intubation tube

Info

Publication number: WO2014163110A2
Application number: PCT/JP2014/059744
Authority: WO
Inventors: 健児日置; 山田　弘志; 幹太倉内
Original assignee: セブンドリーマーズラボラトリーズ，インコーポレイテッド
Priority date: 2013-04-02
Filing date: 2014-04-02
Publication date: 2014-10-09
Also published as: WO2014163110A3; JPWO2014163110A1

Abstract

The objective of the present invention is to provide a nasal intubation tube that reduces, in comparison with conventional nasal intubation tubes, the sense of discomfort when inserting the same into the nasal cavity. Provided is a nasal intubation tube for insertion into the nasal cavity. The 100% tensile stress of the nasal intubation tube is in the range of 0.10-0.70 MPa. The internal diameter of the nasal intubation tube is in the range of 3.0-9.2 mm. The nasal intubation tube preferably satisfies the following formula: 0.030 ≤ 100% tensile stress (MPa) × thickness (mm) ÷ internal diameter (mm) ≤ 0.067 At least a part of the nasal intubation tube is preferably curved. The radius of curvature of the curved part is in the range of 120-160 mm.

Description

Nasal tube

The present invention relates to a nasal cavity insertion tube for insertion into the nasal cavity.

In patients with obstructive sleep apnea syndrome, the pharyngeal portion of the airway is obstructed by complications such as muscle relaxation and obesity during sleep, and intermittent choking (apnea, hypopnea) is repeated intermittently. For this reason, patients with obstructive sleep apnea syndrome suffer from hypertension and cerebrovascular and cardiovascular disorders. In addition, patients with obstructive sleep apnea syndrome may not be able to get enough sleep, and become drowsy during the day or lack concentration or vitality during the day. In addition, when a patient with obstructive sleep apnea syndrome drives a car, the patient is likely to cause an accident or a serious accident or the like due to drowsy driving.

Also, snoring is caused by the vibration of the airway mucosa such as the pharynx when the above-mentioned road is narrowed or occluded during sleep, similar to obstructive sleep apnea syndrome. Snoring not only disturbs the sleep of the housemate, but also disturbs the person's deep sleep, causing sleepiness during the day and lack of concentration and vitality during the day.

Hereinafter, the above-mentioned “obstructive sleep apnea syndrome” and “snoring disease” are collectively referred to as “sleep disorder”.

Therefore, in recent years, various proposals have been made to treat or eliminate sleep disorders. For example, Japanese Patent Laid-Open No. 2006-204630 (Patent Document 1) discloses an “occlusion type sleep apnea syndrome canceller”. According to Patent Document 1, a flexible tube having a length from the pharynx to the nostril portion, a flexible guide wire inserted into the tube, and an elastically deformable breathable member provided at one end of the guide wire ( And a stopper provided at the other end of the guide wire. When the guide wire moves to the nostril side, the mesh tube is retracted by elastic deformation and is drawn into the tube. When pushed into the pharyngeal side, it comes out of the tube and expands into the pharynx by elastic deformation, and the developed reticular cylinder prevents occlusion of the pharynx.

JP 2006-204630 A

However, the conventional nasal cavity insertion tube has been developed with reference to a tube for pouring liquid food or the like. For this reason, when inserted into the nasal cavity, the user has a strong sense of discomfort in the nasal cavity and pharynx. An object of the present invention is to provide a nasal cavity insertion tube in which the uncomfortable feeling when inserted into the nasal cavity is reduced as compared with the conventional one.

According to one aspect of the present invention, a nasal cavity insertion tube for insertion into the nasal cavity is provided. The 100% tensile stress of the nasal cavity insertion tube is in the range of 0.10 MPa to 0.70 MPa. The inner diameter of the nasal cavity insertion tube is in the range of not less than 3.0 mm and not more than 9.2 mm.

Preferably, the nasal cavity insertion tube satisfies the following formula:
0.030 ≦ 100% tensile stress (MPa) × thickness (mm) ÷ inner diameter (mm) ≦ 0.067

Preferably, the nasal cavity insertion tube is at least partially curved. The radius of curvature of the curved portion is in the range of 120 mm to 160 mm.

Preferably, when the nasal cavity insertion tube is inserted into the nasal cavity, the distance from the pharyngeal end of the nasal cavity insertion tube to the axial center of the bending portion is 1/5 or more and 1/2 of the total length of the nasal cavity insertion tube Within the following range.

Preferably, the thickness of the nasal cavity insertion tube is in the range of 0.19 mm to 2.85 mm.

Preferably, the outer diameter of the nasal cavity insertion tube is in the range of 3.3 mm to 10 mm.

The nasal cavity insertion tube of the present invention has a reduced uncomfortable feeling when inserted into the nasal cavity as compared with the conventional one.

It is a perspective view of the nasal cavity insertion tool 300 concerning 1st Embodiment. It is an exploded view of the nasal cavity insertion tool 300 concerning 1st Embodiment. It is a perspective view which shows the whole structure of the tube insertion device set 1000 at the time of tube accommodation concerning 2nd Embodiment. It is a perspective view which shows the whole structure of the tube inserter set 1000 at the time of the tube protrusion concerning 2nd Embodiment. It is a left view of the guide member 100 concerning 2nd Embodiment. It is a top view of the guide member 100 concerning 2nd Embodiment. It is a right view of the guide member 100 concerning 2nd Embodiment. It is a perspective view which shows the whole structure of the tube insertion device set 1000 which has a cover at the time of tube protrusion. It is a perspective view of the slider 200 concerning 2nd Embodiment. It is a top view of the slider 200 concerning 2nd Embodiment. It is a back perspective view of stopper pin 302 concerning a 2nd embodiment. It is a back perspective view of the stopper cover 303 concerning 2nd Embodiment. It is a back perspective view of stopper anchor 304 concerning a 2nd embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

First embodiment

<Nasal cavity insertion tool>
First, as a first embodiment, a nasal cavity insertion tool 300 according to the present embodiment will be described with reference to FIGS. 1 and 2.

The nasal cavity insertion tool 300 includes a tube body (nasal cavity insertion tube) 301, a stopper pin 302, a stopper cover 303, a stopper anchor 304, and a stopper spring 305.

Hereinafter, for the sake of explanation, the direction from the center in the longitudinal direction of the tube body 301 toward the end on the side attached to the stopper pin 302 is referred to as the rear, and the direction toward the other end is referred to as the front.

The tube main body 301 is made of a silicone resin or a thermoplastic elastomer (polystyrene, polyvinyl chloride, polyolefin, polyurethane, polyester, or the like). The tube body 301 is formed so as to extend from the nostril to the pharynx. Details of the tube body 301 will be described later. In more detail, the tube main body 301 according to the present embodiment includes a styrene thermoplastic elastomer EARNESTONE (registered trademark) CJ103 (manufactured by Kuraray Plastic Co., Ltd.), liquid silicone rubber MED4920 (manufactured by Nusil Silicone Technology), and the like. Can be used.

The stopper pin 302 is inserted into the rear end portion of the tube main body 301. One end of a stopper spring 305 is connected to the stopper pin 302. A stopper cover 303 is put on the stopper pin 302 from the rear. The stopper pin 302 and the stopper cover 303 serve as a connecting member for connecting the tube main body 301.

The stopper anchor (nasal insertion member) 304 is inserted into the other nasal cavity when the tube body 301 is inserted into one nasal cavity of the user. The other end of the stopper spring 305 is connected to the stopper anchor 304.

The stopper spring 305 has one end fixed to the stopper pin 302 and the other end fixed to the stopper anchor 304. The stopper spring 305 is an elastic member and is urged so that the axial direction of the tube main body 301 (and the stopper pin 302 and the stopper cover 303) is parallel to the axial direction of the stopper anchor 304. The user can widen the distance between the tip of the stopper pin 302 and the tip of the stopper anchor 304 against the elastic force of the stopper spring 305. As a result, the user can easily pinch the nose column between the tube main body 301 and the stopper anchor 304.

The tube body 301, the stopper pin 302, and the stopper cover 303 are inserted into one nose of the patient, and the stopper anchor 304 is inserted into the other nose. When the user releases his / her finger from the nasal cavity insertion tool 300, the rear end portion (the stopper pin 302, the stopper cover 303) of the tube main body 301 and the stopper anchor 304 sandwich the nasal column by the biasing force of the stopper spring 305.

<Usage of nasal cavity insertion tool>
Next, a method of using the nasal cavity insertion tool 300 will be described with reference to FIG.

Generally, at the time of shipment, the tube main body 301 is covered with a cover (not shown). Alternatively, the nasal cavity insertion tool 300 itself is covered with a cover.

First, the user takes out the tube main body 301 or the nasal cavity insertion tool 300 from the cover. The user holds the front portion of the tube body 301 with one hand and inserts the front end of the tube body 301 into one nasal cavity while holding the stopper pin 302 and the stopper anchor 304 with the other hand. In a state where the front end of the tube body 301 is inserted into one nasal cavity, the user holds the longitudinal center of the tube body 301 with one hand and holds the stopper pin 302 and the stopper anchor 304 with the other hand. While holding, the nasal cavity insertion device 300 is further advanced. Thereby, the tube main body 301 is inserted to the pharynx.

Just before the tube main body 301 reaches the pharynx, the user widens the distance between the stopper pin 302 and the stopper anchor 304. The user advances the nasal cavity insertion tool 300 to insert the stopper pin 302 and the stopper cover 303 into the one nasal cavity, and inserts the stopper anchor 304 into the other nasal cavity.

When the user weakens the force for separating the stopper pin 302 and the stopper anchor 304, the stopper pin 302 and the stopper anchor 304 sandwich the nose column by the biasing force of the stopper spring 305. Thereby, the nasal cavity insertion tool 300 is fixed with respect to the nose.

<Modification>
As mentioned above, although embodiment and the Example of this invention were described based on drawing, it should be thought that a specific structure is not limited to these embodiment. The scope of the present invention is indicated not only by the above description of the embodiments but also by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

For example, in the present embodiment described above, the color of each part of the nasal cavity insertion device 300 was not mentioned, but the color of the nasal cavity insertion device 300 is transparent so that the nasal cavity insertion device 300 does not stand out when worn. Alternatively, the color of the nasal cavity insertion tool 300 may be a skin color, the color of the nasal cavity insertion tool 300 may be pink, or the color of the nasal cavity insertion tool 300 may be black.

In addition, although the silicone resin is exemplified as the material of the nasal cavity insertion tool 300 according to the present embodiment, the present invention is not limited to this and can be applied as the following materials in addition to the silicone resin. Specifically, ABS resin (acrylonitrile-butadiene-styrene), butadiene-styrene rubber, polyester copolymer, ethylene-propylene rubber (ethylene-propylene-terpolymer rubber), EVA resin (ethylene-vinyl acetate copolymer) , High-density polyethylene, high-density polypropylene, high-impact polystyrene, low-density polyethylene, methyl methacrylate-acrylonitrile-butadiene-styrene copolymer, chloroprene rubber, nitrile butadiene rubber, polyamide resin, PETG resin, polyacetal resin, polybutylene terephthalate resin , Polycarbonate resin, polyethersulfone resin, polyethylene resin, polyethylene terephthalate resin, polyimide resin, isobutylene-isoprene copolymer, polypropylene Resin, polystyrene resin, polysulfone resin, polytetrafluoroethylene resin, polyurethane resin, polyvinyl acetate resin, polyvinyl chloride resin, styrene-butadiene copolymer resin, styrene-butadiene rubber, acrylic-modified silicone resin, one-component RTV (Room emperature lcanizable: normal temperature vulcanization).

Second embodiment

Next, referring to FIG. 3 and FIG. 4, as a second embodiment, a tube inserter set for reducing the frequency and possibility of the user touching the tube body when inserting the nasal cavity insertion tool Will be described.

<Tube inserter set>
First, an outline of the overall configuration of the tube inserter set 1000 according to the present embodiment and an outline of a method for using the tube inserter set 1000 will be described.

The tube inserter set 1000 includes a guide member 100, a slider 200, and a nasal cavity insertion tool 300. In addition, what has the guide member 100 and the slider 200, and does not have the nasal cavity insertion tool 300 is called a tube insertion device.

One end of the nasal cavity insertion tool 300 can be attached to the slider 200. The nasal cavity insertion tool 300 and a part of the slider 200 are accommodated in the guide member 100. The guide member 100 is formed with a gripping portion 100A.

Hereinafter, for the sake of explanation, the direction from the center in the longitudinal direction of the nasal cavity insertion tool 300 toward the end on the side attached to the slider 200 is referred to as the rear, and the direction toward the other end is referred to as the front.

In the state shown in FIG. 3, the user pushes the slider 200 forward with the other hand while holding the grip portion 100A with one hand. As a result, as shown in FIG. 4, the slider 200 and the nasal cavity insertion tool 300 slide forward in the guide member 100. The user can insert the nasal cavity insertion device 300 to a desired position by inserting the front end of the nasal cavity insertion device 300 into the nasal cavity and pushing the slider 200 forward.

Thus, the tube inserter set 1000 according to the present embodiment can reduce the need for the user to grip the tube directly. Hereinafter, the structure of each part of the tube inserter set 1000 which implement | achieves such a function is demonstrated in detail.

<Guide member>
The guide member 100 according to the present embodiment will be described with reference to FIGS.

The guide member 100 is a cylindrical member. A notch 100X is formed in the left side wall of the guide member 100 from the front end portion to the vicinity of the rear end portion. As will be described later, in the present embodiment, the slider 200 slides with respect to the guide member 100 along the notch 100X.

A flat grip portion 100A is provided on the right side wall of the guide member 100 so as to extend in the radial direction. The user can easily hold the guide member 100 by pinching the grip portion 100A. Further, with such a configuration, it is possible to prevent the user from deforming the guide member 100 main body or narrowing the width of the notch 100X by pinching the main body of the guide member 100. .

Further, reinforcing

ribs

100B and 100B are formed on the right side surface of the guide member 100 along the circumferential direction from the front end portion and the rear end portion of the grip portion 100A. With this configuration, it is possible to prevent the main body of the guide member 100 from being deformed or the width of the notch 100X from being reduced after the guide member 100 is injection molded or when the user pinches the guide member 100. can do.

A tapered rib 100 C is formed around the front end portion of the guide member 100. As a result, the rib 100C comes into contact with the tip of the nasal cavity when the tip of the guide member 100 is inserted into the nasal cavity, thereby preventing the user from accidentally inserting the guide member 100 too deeply into the nose.

A locking projection 100E is formed on the outer wall of the rear end portion of the guide member 100. The protrusion 100E is in contact with a protrusion of the slider 200 described later. The slider 200 can be fixed to the rear portion of the guide member 100 by the protrusion 100E. In other words, the movement of the slider 200 is limited by the protrusion 100 E so that the front end portion of the nasal cavity insertion tool 300 does not protrude from the front end of the guide member 100. Further, in other words, the user can push the slider 200 forward with a predetermined force or more to get over the protrusion 100E on the protrusion of the slider 200, and the front end portion of the nasal cavity insertion tool 300 can be moved over the guide member 100. Can protrude from the front end.

Preferably, a lubricant is preferably applied to the surface of the tube body 301A described later. For example, as shown in FIG. 8, the tube inserter set 1000 preferably has a cover 400 for covering the tube main body 301A from the front.

In preparation for such a case,

protrusions

100Y and 100Y are formed on the opposing surfaces of the notch 100X. The

protrusions

100Y and 100Y are configured to contact a connecting member of the slider 200 described later or a stopper spring 305 of the nasal cavity insertion tool 300 described later, and limit the sliding of the slider 200. The protrusion 100Y may be formed only on one side of the notch 100X.

More specifically, when the user pulls out the cover 400 from the guide member 100, the front end portion of the tube main body 301 and the cover 400 are stopped at a position slightly protruding from the guide member 100, that is, the tube main body 301 or the slider 200. It is preferable that the

protrusions

100Y and 100Y are configured to limit the advancement of the slider 200 or the nasal cavity insertion tool 300 so that the

protrusions

100Y and 100Y do not protrude too far from the guide member 100. The user can move the slider 200 or the nasal cavity insertion tool 300 over the

protrusions

100Y and 100Y by pushing the slider 200 forward with a predetermined force or more, and can further advance the nasal cavity insertion tool 300.

<Slider>
Next, the slider 200 according to the present embodiment will be described with reference to FIGS. 9 and 10.

The slider 200 includes an inner member (first member) 200A, an outer member (second member) 200C, and a connecting member 200E. In the present embodiment, these members are integrally formed.

The inner member 200 A is located inside the guide member 100 when the nasal cavity insertion tool 300 is accommodated in the guide member 100. A protrusion 200B is formed at the front end of the inner member 200A. The protrusion 200B can be fitted into

holes

302A and 303A of a stopper pin 302 and a stopper cover 303 (see FIGS. 11 and 12) of the nasal cavity insertion tool 300 described later.

The outer member 200 C is positioned outside the guide member 100 when the nasal cavity insertion tool 300 is stored in the guide member 100. A protrusion 200D is formed at the front end of the outer member 200C. The protrusion 200D can be fitted into a hole 304A of a stopper anchor 304 (see FIG. 13) of the nasal cavity insertion tool 300 described later.

The thickness of the

protrusions

200B and 200D, the inner diameters of the

holes

302A and 303A of the stopper pin 302 and the stopper cover 303, and the inner diameter of the hole 304A of the stopper anchor 304 are such that the protrusion 200B is fitted into the stopper pin 302 and the stopper cover 303. It is preferable that the nasal cavity insertion tool 300 is designed so as not to be detached from the slider 200 only by the weight of the nasal cavity insertion tool 300 when the 200D is fitted into the stopper anchor 304.

The inner member 200A and the outer member 200C are connected via a connecting member 200E. In the present embodiment, the slider 200 is integrally formed so that the thickness of a part of the connecting member 200E is much smaller than the size of the inner member 200A and the outer member 200C.

In other words, when the nasal cavity insertion tool 300 is stored in the guide member 100 (when the slider 200 and the nasal cavity insertion tool 300 are stored in the guide member 100), the connecting member 200E is sandwiched between the notches 100X. It is. Therefore, the thickness of at least a part of the connecting member 200E needs to be equal to or smaller than the width of the notch 100X of the guide member 100.

In the present embodiment, the slider 200 has a plate-like member 200F parallel to the guide member 100 outside the guide member 100. The slider 200 is formed of an elastic material, and the outer member 200C rotates relative to the inner member 200A when the boundary portion between the plate-like member 200F and the outer member 200C is bent.

More specifically, when the user pushes the rear part (contact part) 200X of the outer member 200C toward the inner member 200A (that is, toward the guide member 100), the front end of the inner member 200A and the outer member 200C Increases the distance from the front edge. When the user weakens the force pushing the rear part 200X of the outer member 200C, the distance between the front end of the inner member 200A and the front end of the outer member 200C is reduced.

Also, a locking projection 200G is formed on the inner member 200A side of the rear portion of the plate-like member 200F. The protrusion 200G comes into contact with the protrusion 100E on the outer side of the guide member 100. That is, the slider 200 can be temporarily fixed to the rear portion of the guide member 100 by the protrusion 200G of the plate-like member 200F and the protrusion 100E of the guide member 100.

<Nasal cavity insertion tool>
Next, a nasal cavity insertion tool 300 according to the present embodiment will be described with reference to FIGS. 1, 2, and 11 to 13. FIG.

Since the structure and properties of the tube main body 301 are the same as those of the first embodiment, description thereof will not be repeated here.

The stopper pin 302 is inserted into the rear end portion of the tube main body 301. One end of a stopper spring 305 is connected to the stopper pin 302. A stopper cover 303 is put on the stopper pin 302 from the rear. The stopper pin 302 is formed with a hole 302A. The protrusion 200B of the inner member 200A can be fitted into the hole 302A. The relationship between the inner diameter of the hole 302A and the thickness of the protrusion 200B of the inner member 200A is as described above.

The stopper cover 303 has a hole 303A. The stopper pin 302 and the protrusion 200B of the inner member 200A can be inserted into the hole 303A. The stopper pin 302 and the stopper cover 303 serve as a connecting member for connecting the tube main body 301.

The stopper anchor (nasal insertion member) 304 is inserted into the other nasal cavity when the tube body 301 is inserted into one nasal cavity of the user. The other end of the stopper spring 305 is connected to the stopper anchor 304. The stopper anchor 304 is formed with a hole 304A. The protrusions 200D of the outer member 200C can be fitted into the holes 304A. The relationship between the inner diameter of the hole 304A and the thickness of the protrusion 200D of the outer member 200C is as described above.

The stopper spring 305 has one end fixed to the stopper pin 302 and the other end fixed to the stopper anchor 304. The stopper spring 305 is an elastic member and is urged so that the axial direction of the tube main body 301 (and the stopper pin 302 and the stopper cover 303) is parallel to the axial direction of the stopper anchor 304.

Therefore, in a state where the protrusion 200B of the inner member 200A and the protrusion 200D of the outer member 200C are fitted into the stopper pin 302 and the

holes

302A and 303A of the stopper cover 303 and the hole 304A of the stopper anchor 304, the user can The axial direction of the tube body 301 (and the stopper pin 302 and the stopper cover 303) and the stopper anchor 304 are pushed by pushing the rear part 200X of the outer member 200C against the urging force of the spring 305 in the direction of the rear part of the inner member 200A. The angle between the axis direction and the axis direction can be widened. That is, the user can widen the distance between the tip of the stopper pin 302 and the tip of the stopper anchor 304. As a result, the user can easily pinch the nose column between the tube main body 301 and the stopper anchor 304.

The tube body 301, the stopper pin 302, and the stopper cover 303 are inserted into one nose of the patient, and the stopper anchor 304 is inserted into the other nose. When the user releases his / her finger from the rear part 200X of the outer member 200C, the rear end part (the stopper pin 302, the stopper cover 303) and the stopper anchor 304 of the tube main body 301 push the nose column by the biasing force of the stopper spring 305. Sandwich.

<How to use the tube inserter set>
Next, a method of using the tube inserter set 1000 will be described with reference to FIGS.

Generally, the rear end of the nasal cavity insertion tool 300 is attached to the slider 200 at the time of shipment. Further, the nasal cavity insertion tool 300 and the inner member 200 A of the slider 200 are housed inside the guide member 100.

First, the user takes out the tube inserter set 1000 from the product cover or box. The user moves the slider 200 forward with the other hand while holding the grip portion 100A with one hand. At this time, the user moves the slider 200 forward by causing the protrusion 200G of the slider 200 to get over the protrusion 100E of the guide member 100.

When the connecting member 200E of the slider 200 or the stopper spring 305 contacts the

protrusions

100Y and 100Y of the notch 100X of the guide member 100, the slider 200 stops. At this time, the front end of the tube main body 301 and the front end of the cover 400 (see particularly FIG. 8) protrude from the guide member 100. The user pulls out the cover 400 from the guide member 100 while holding the grip portion 100A.

The user further moves the slider 200 forward with the other hand while holding the grip portion 100A with one hand. At this time, the user pushes the slider 200 forward with a relatively strong force, thereby causing the connecting member 200E of the slider 200 or the stopper spring 305 of the nasal cavity insertion tool 300 to get over the

protrusions

100Y and 100Y of the guide member 100.

The user inserts the front end of the tube body 301 into one nasal cavity. In a state where the front end of the tube main body 301 is inserted into one nasal cavity, the user further advances the slider 200 with the other hand while holding the grip portion 100A with one hand. Thereby, the tube main body 301 is inserted to the pharynx.

When the tube body 301 reaches the pharynx, the user removes the nasal cavity insertion tool 300 and the slider 200 from the guide member 100. More specifically, the user widens the distance between the stopper pin 302 and the stopper anchor 304 by pushing the rear portion 200X of the outer member 200C toward the guide member 100 before and after the tube body 301 reaches the pharynx. The user advances the nasal cavity insertion tool 300 to insert the stopper pin 302 and the stopper cover 303 into the one nasal cavity, and inserts the stopper anchor 304 into the other nasal cavity.

When the user weakens the force for pushing the outer member 200C of the slider 200, the stopper pin 302 and the stopper anchor 304 sandwich the nose column by the biasing force of the stopper spring 305. Thereby, the nasal cavity insertion tool 300 is fixed with respect to the nose. The user removes the slider 200 from the nasal cavity insertion tool 300 by moving the slider 200 (and the guide member) away from the nose.

For example, in the above-described embodiment, the guide member 100 has a cylindrical shape, but is not limited to such a form. The guide member 100 may have a prismatic shape. The guide member 100 may be a half of a cylinder, a part of a cylinder, a half of a prism, or a part of a prism. That is, the guide member 100 only needs to hold the slider 200 so as to be slidable.

In the above-described embodiment, the notch 100X is formed in the guide member 100, and the grip portion 100A is formed on the opposite side of the notch 100X. However, the present invention is not limited to such a form. Further, the grip portion 100 A does not need to be a flat shape that is long in the axial direction of the guide member 100. That is, the gripper 100A only needs to achieve the purpose of making it difficult for the user to deform the shape of the guide member 100 (particularly, the notch 100X).

In the above-described embodiment, the color of each part of the tube inserter set 1000 is not mentioned, but even if the color of the nasal cavity insertion tool 300 is transparent so that the nasal cavity insertion tool 300 is not noticeable when worn. The color of the nasal cavity insertion tool 300 may be a skin color, the color of the nasal cavity insertion tool 300 may be pink, or the color of the nasal cavity insertion tool 300 may be black.

In addition, although the silicone resin is exemplified as the material of the tube inserter set 1000 according to the present embodiment, the present invention is not limited to this and can be applied as the following materials in addition to the silicone resin. Specifically, ABS resin (acrylonitrile-butadiene-styrene), butadiene-styrene rubber, polyester copolymer, ethylene-propylene rubber (ethylene-propylene-terpolymer rubber), EVA resin (ethylene-vinyl acetate copolymer) , High-density polyethylene, high-density polypropylene, high-impact polystyrene, low-density polyethylene, methyl methacrylate-acrylonitrile-butadiene-styrene copolymer, chloroprene rubber, nitrile butadiene rubber, polyamide resin, PETG resin, polyacetal resin, polybutylene terephthalate resin , Polycarbonate resin, polyethersulfone resin, polyethylene resin, polyethylene terephthalate resin, polyimide resin, isobutylene-isoprene copolymer, polypropylene Resin, polystyrene resin, polysulfone resin, polytetrafluoroethylene resin, polyurethane resin, polyvinyl acetate resin, polyvinyl chloride resin, styrene-butadiene copolymer resin, styrene-butadiene rubber, acrylic-modified silicone resin, one-component RTV (Room emperature lcanizable: normal temperature vulcanization).

In addition, as a material of the tube inserter set 1000 according to the present embodiment, it is particularly preferable to use gamma ray resistant polypropylene. In particular, in order to easily deform (easily bend) a part of the slider 200, it is preferable to employ a low elastic modulus gamma ray resistant polypropylene for the slider 200.

Examples and comparative examples

Hereinafter, the properties of the tube main body 301 according to the first and second embodiments will be described in detail. Table 1 shows 100% tensile stress (MPa), inner diameter (mm), outer diameter (mm), thickness (mm), and tensile stress × thickness / inner diameter for each of a plurality of examples related to the tube main body 301. It shows the relationship between the value, the size of the uncomfortable feeling, and the air condition (ventilation volume). Table 2 shows 100% tensile stress (MPa), inner diameter (mm), outer diameter (mm), thickness (mm), and tensile stress × thickness ÷ for each of a plurality of comparative examples related to the tube body 301. It shows the relationship between the value of the inner diameter, the size of the uncomfortable feeling, and the air passage (ventilation volume). In Tables 1 and 2, the double circle ◎ means “very good”, the single circle ○ means “good”, the triangle △ means “ordinary”, and the cross × It means “bad”. In the present embodiment, the main body 111 and the tube main body 301 are made of styrene thermoplastic elastomer EARNESTONE (registered trademark) CJ103 (manufactured by Kuraray Plastic Co., Ltd.).

(Explanation about tensile stress)
Referring to Table 1, the tube body 301 preferably has a 100% tensile stress in the range of 0.10 MPa to 0.70 MPa. When the 100% tensile stress is within this range, the tube body 301 can withstand negative pressure in the airway and has pushability, while swallowing and inserting the tube, The possibility of damaging soft tissue can be reduced. More specifically, it is possible to eliminate both problems such as being too soft and the tube body 301 being crushed or having a sense of incongruity when the tube body 301 is inserted.

In order to enhance the effect, it is preferable that the 100% tensile stress of the tube main body 301 is in the range of 0.23 MPa to 0.39 MPa. In order to further enhance the effect, it is preferable that the 100% tensile stress of the tube body 301 is in the range of 0.26 MPa to 0.36 MPa. In order to repeatedly use the nasal cavity insertion tool 300, the hardness (JIS K6253 type A) is preferably 40 or less.

(Explanation about inner diameter)
Referring to Table 1, the tube body 301 preferably has an inner diameter in the range of 3.0 mm or more and 9.2 mm or less. When the inner diameter is within this range, the adult male can satisfy the ventilation required for a certain period of time and reduce the uncomfortable feeling when inserting the tube body 301 even if the thickness is maintained to maintain the strength. Can do. In more detail, it is possible to solve problems such as awakening during sleep due to insufficient ventilation and the user's inability to withstand pain in the nasal cavity due to the outside diameter becoming too large. it can.

In order to enhance the effect, it is preferable that the inner diameter of the tube body 301 is in the range of 3.5 mm to 8.3 mm. In order to further enhance the effect, the inner diameter of the tube main body 301 is preferably within a range of 4.0 mm or greater and 7.0 mm or less.

(Explanation about outer diameter)
Referring to Table 1, the tube body 301 preferably has an outer diameter in the range of 3.3 mm to 10 mm. When the outer diameter is within this range, it reduces the uncomfortable feeling when the tube body 301 is inserted, and satisfies the ventilation amount that adult men need for a certain time even if the thickness is maintained to maintain the strength. be able to. In more detail, it is possible to solve problems such as awakening during sleep due to insufficient ventilation and the user's inability to withstand pain in the nasal cavity due to the outside diameter becoming too large. it can.

In order to enhance the effect, the outer diameter of the tube body 301 is preferably in the range of 3.6 mm or more and 9.6 mm or less. In order to further enhance the effect, the outer diameter of the tube body 301 is preferably in the range of 4.8 mm or more and 8.4 mm or less.

(Explanation about thickness)
Referring to Table 1, the tube body 301 preferably has a thickness in the range of 0.19 mm to 2.85 mm. When the thickness is within this range, the tube body 301 can withstand the negative pressure in the airway, and the flexibility of the tube body 301 in the axial direction and the radial direction can be ensured. That is, it is possible to prevent the distal end of the tube main body 301 from being strongly pressed against the soft tissue of the pharynx or the periphery of the tube main body 301 being strongly pressed against the inner surface of the airway. When the inner diameter is reduced, there is a possibility that the adult male cannot satisfy the ventilation required for a certain time.

(Explanation of relationship between tensile stress, thickness and inner diameter)
Referring to Table 1, the tube body 301 preferably satisfies the following formula.
0.030 ≦ 100% tensile stress (MPa) × thickness (mm) ÷ inner diameter (mm) ≦ 0.067
When the above conditions are satisfied, the discomfort can be reduced while preventing the tube body 301 from being crushed by the negative pressure in the airway.

In order to enhance the effect, it is preferable to satisfy the following formula.
0.031 ≦ 100% tensile stress (MPa) × thickness (mm) ÷ inner diameter (mm) ≦ 0.063
In order to further enhance the effect, it is preferable to satisfy the following expression.
0.038 ≦ 100% tensile stress (MPa) × thickness (mm) ÷ inner diameter (mm) ≦ 0.052

(Explanation about radius of curvature)
Referring to Table 1, it is preferable that at least a part of the tube main body 301 is curved, and the radius of curvature of the curved portion is in the range of 120 mm or more and 160 mm or less. When the radius of curvature is within this range, the tube body 301 may come into strong contact with the soft palate, or the tube body 301 may come into strong contact with the back side of the pharynx and cause inflammation in the soft tissue of the pharynx. Can be reduced. It is also possible to prevent the tip of the tube body 301 from straying in a straight nasal cavity compared to the airway.

(Explanation about the position of the bending portion)
Further, when the tube body 301 is inserted into the nasal cavity, the length from the pharyngeal end of the tube body 301 to the center 301X in the longitudinal direction of the curved portion is 1/5 or more of the total length of the tube body 301. It is preferably within the range of 2 or less. When the length is within this range, the distal end of the tube body 301 can be smoothly inserted from the nasal cavity to the back of the airway.

100 guide member 100A gripping part 100B (for reinforcement) rib 100C (tapered) rib 100E protrusion 100X gripping part 100Y protrusion 200 slider 200A inner member 200B protrusion 200C outer member 200D protrusion

200E connecting member

200F plate member 200G protrusion 300 nasal cavity insertion tube 301 Tube body 302 Stopper pin 302A Hole 303 Stopper cover 303A Hole 304 Stopper anchor 304A Hole 305 Stopper spring 1000 Tube inserter set

Claims

A nasal insertion tube for insertion into the nasal cavity,
100% tensile stress is in the range of 0.10 MPa to 0.70 MPa,
A nasal cavity insertion tube having an inner diameter in a range of 3.0 mm or more and 9.2 mm or less.
The nasal cavity insertion tube according to claim 1, satisfying the following formula.
0.030 ≦ 100% tensile stress (MPa) × thickness (mm) ÷ inner diameter (mm) ≦ 0.067
The nasal cavity insertion tube according to claim 1 or 2, wherein at least a portion is curved, and a radius of curvature of the curved portion is in a range of 120 mm or more and 160 mm or less.
When the nasal cavity insertion tube is inserted into the nasal cavity, the distance from the pharyngeal end of the nasal cavity insertion tube to the axial center of the curved portion is 1/5 or more of the total length of the nasal cavity insertion tube. The nasal cavity insertion tube according to claim 3, which is within a range of 2 or less.
The nasal cavity insertion tube according to any one of claims 1 to 4, wherein the thickness is in a range of 0.19 mm to 2.85 mm.
The nasal cavity insertion tube according to any one of claims 1 to 5, wherein an outer diameter is in a range of 3.3 mm to 10 mm.