JP3118848U - Cannula - Google Patents

Abstract

The present invention provides a cannula that can be easily adapted to the face, can remarkably reduce discomfort during wearing, and has no risk of blocking the supply of gas such as oxygen.
A cannula main body (1) includes a main body tube portion (2) disposed under the face nose, a pair of left and right nostril tubes (3) standing on an upper surface portion of the main body tube portion and inserted into a nostril, and an oxygen cylinder. In a cannula having a body tube portion connected to a tube T communicated with a gas supply means, etc., the center portion of the body tube portion is bent in a direction along the face. The thickness of the central portion of the main body tube portion is at least the outer surface portion that is the surface that faces the face contact surface portion and the upper surface portion that faces the face contact surface portion that is the surface that contacts the face The cannula is characterized by having a large lower surface part and / or upper surface part.
[Selection] Figure 1

Description

  The present invention relates to a cannula, and more particularly to a cannula used for respiratory assistance such as respiratory diseases.

  A cannula used for respiratory assistance such as respiratory diseases supplies a gas such as oxygen to a wearer who is a patient safely and reliably. When using the cannula, a ventilation path such as a tube or a main body tube portion of the cannula main body is used. Therefore, it is desirable to ensure a low level of discomfort at the face contact portion when worn.

  For example, Patent Document 1 describes a technique in which a face contact portion is formed so as to be easily adapted to the face when worn.

Registered Utility Model No. 3107787

  The technology of Patent Document 1 is such that the thickness of the intermediate portion of the cannula body is thinner than the thickness of the central portion and the end portion, and the intermediate portion that is in contact with the face is easily bent along the face. It has a configuration that makes it easy to become familiar with.

  However, in the technique of Patent Document 1, since it bends only at the middle part, the center part or the end part other than the middle part may not be familiar with the wearer's face. In particular, the face is a solid having a three-dimensional curved surface, and each person has a different face shape and size. Therefore, it is extremely insufficient to bend only at the middle part.

  Therefore, in order to make the entire cannula body including not only the intermediate part but also the other part easy to be familiar with the face, it is conceivable that the entire thickness of the cannula body is made as thin as the intermediate part.

  However, if the overall thickness of the cannula is made thin to make it soft, the familiarity to the face will be good, but if the tube is pulled during sleeping or moving, the stress burden will be increased. Such a portion is easily deformed and crushed, and the air passage of the crushed portion may be crushed and the supply of gas such as oxygen may be blocked. Such blockage of the ventilation path becomes a fatal defect in a cannula used for respiratory assistance such as a respiratory disease.

  Accordingly, an object of the present invention is to provide a cannula that can be easily adapted to the face, can remarkably reduce discomfort at the time of wearing, and does not cause the supply of gas such as oxygen to be blocked.

  This invention which solves the above-mentioned subject has the following composition.

1. The main body of the cannula communicates with a main body tube portion disposed under the face nose, a pair of left and right nostril tubes that are erected on the upper surface of the main body tube portion and inserted into the nostrils, and a gas supply means such as an oxygen cylinder In the cannula having the left and right ends of the main body pipe part to which the tube is connected,
The central portion of the main body tube portion is bent in a direction along the face, and the wall thickness of the bent central portion of the main body tube portion is at least the face contact surface portion that is a surface in contact with the face. A cannula characterized in that an outer surface portion that is a surface facing the contact surface portion, a lower surface portion that is a surface facing the upper surface portion, and / or the upper surface portion is large.

2. The main body of the cannula communicates with a main body tube portion disposed under the face nose, a pair of left and right nostril tubes that are erected on the upper surface of the main body tube portion and inserted into the nostrils, and a gas supply means such as an oxygen cylinder In the cannula having the left and right ends of the main body pipe part to which the tube is connected,
The central portion of the main body tube portion is bent in a direction along the face, and the wall thickness of the bent central portion of the main body tube portion is at least the face contact surface portion that is a surface in contact with the face. A cannula characterized in that an outer surface portion which is a surface facing the contact surface portion is large.

3. The main body of the cannula communicates with a main body tube portion disposed under the face nose, a pair of left and right nostril tubes that are erected on the upper surface of the main body tube portion and inserted into the nostrils, and a gas supply means such as an oxygen cylinder In the cannula having the left and right ends of the main body pipe part to which the tube is connected,
The central portion of the main body tube portion is bent in a direction along the face, and the thickness of the bent central portion of the main body tube portion is at least the upper surface with respect to the face contact surface portion that is the surface in contact with the face. A cannula characterized in that a lower surface part which is a surface facing the part is large.

4). The main body of the cannula communicates with a main body tube portion disposed under the face nose, a pair of left and right nostril tubes that are erected on the upper surface of the main body tube portion and inserted into the nostrils, and a gas supply means such as an oxygen cylinder In the cannula having the left and right ends of the main body pipe part to which the tube is connected,
The central portion of the main body tube portion is bent in a direction along the face, and the thickness of the bent central portion of the main body tube portion is at least the upper surface with respect to the face contact surface portion that is the surface in contact with the face. A cannula characterized by a large part.

5). The main body tube portion has a configuration in which a corner portion protruding from the surface is formed on the surface of any one of the outer surface portion, the upper surface portion, and the lower surface portion of the bent central portion, and the thickness of this portion is increased. The cannula according to any one of the above items 1 to 4, wherein the cannula is present.

6). The cannula according to any one of the above 1 to 5, wherein a tube inner diameter of a central portion of the main body tube portion is larger than a tube inner diameter of another portion.

  According to the first aspect of the present invention, the central portion of the main tube portion of the cannula main body is bent in a direction along the face, and the thickness of the bent central portion of the main tube portion is the surface on the side in contact with the face. The face contact surface portion is at least an outer surface portion that is a surface facing the face contact surface portion, a lower surface portion that is a surface facing the upper surface portion, and / or the upper surface portion. Even if the entire main body is formed in a soft configuration that is easily adapted to the face, deformation collapse at the central portion of the main body tube portion that is likely to be stressed can be prevented, so that the ventilation path can be prevented from being crushed. Therefore, it becomes a cannula which does not have a possibility that supply of gas, such as oxygen, may be interrupted | blocked in the state which reduced the discomfort at the time of wearing significantly.

  According to the invention shown in claim 2, the central portion of the main tube portion of the cannula main body is bent in a direction along the face, and the thickness of the bent central portion of the main tube portion is the surface on the side in contact with the face Even if the entire cannula body is formed into a soft configuration that is easy to adjust to the face, stress can be applied to the face contact surface portion. Since deformation collapse at the central portion of the main body tube portion, which is likely to be burdened, can be prevented, the air passage can be prevented from being crushed. Therefore, it becomes a cannula which does not have a possibility that supply of gas, such as oxygen, may be interrupted | blocked in the state which reduced the discomfort at the time of wearing significantly.

  According to the invention shown in claim 3, the central portion of the main tube portion of the cannula main body is bent in the direction along the face, and the thickness of the bent central portion of the main tube portion is the surface on the side in contact with the face. With respect to the face contact surface portion, the lower surface portion, which is at least the surface facing the upper surface portion, is large, so even if the entire cannula body is formed into a soft configuration that is easy to adapt to the face, stress is applied. Since the deformation | transformation crushing in the center part of an easy main body pipe part can be prevented, the crushing of a ventilation path | route can be prevented. Therefore, it becomes a cannula which does not have a possibility that supply of gas, such as oxygen, may be interrupted | blocked in the state which reduced the discomfort at the time of mounting | wearing remarkably.

  According to the invention shown in claim 4, the central portion of the main tube portion of the cannula main body is bent in a direction along the face, and the thickness of the bent central portion of the main tube portion is the surface on the side in contact with the face. In comparison with the face contact surface portion, which is at least the upper surface portion is large, even if the entire cannula body is formed in a soft configuration that is easy to adapt to the face, the central portion of the main body tube portion that is easily stressed Therefore, it is possible to prevent the ventilation path from being crushed. Therefore, it becomes a cannula which does not have a possibility that supply of gas, such as oxygen, may be interrupted | blocked in the state which reduced the discomfort at the time of mounting | wearing remarkably.

  According to the invention shown in claim 5, a square portion protruding from the surface is formed on the surface of any one of the outer surface portion, the upper surface portion, and the lower surface portion of the bent central portion of the main body tube portion. Because it can prevent deformation collapse in the central part of the main body tube part that is easily stressed, even if the entire cannula body is formed in a soft structure that is easy to adjust to the face by the configuration with a large thickness of Crushing of the ventilation path can be prevented. Therefore, it becomes a cannula which does not have a possibility that supply of gas, such as oxygen, may be interrupted | blocked in the state which reduced the discomfort at the time of wearing significantly.

  According to the invention shown in claim 6, when the tube inner diameter of the central portion of the main body tube portion is larger than the inner diameter of the tube portion of the other portion, oxygen or the like supplied into the ventilation path of the central portion of the main body tube portion. Since a gas reservoir (reservoir) is generated, the supply of gas such as oxygen is more stable.

  Next, the present invention will be described in detail with reference to the accompanying drawings.

  1 is a plan view showing an embodiment of a cannula according to the present invention, FIG. 2 is a front view of FIG. 1, FIG. 3 is a sectional view taken along line III-III in FIG. 2, and FIG. FIG. 5 is an end view showing another embodiment of the end surface portion taken along line IV-IV in FIG. 2, and FIG. 6 is an enlarged sectional view showing another embodiment taken along the line VI-VI in FIG.

  1 and 2, the cannula according to the present invention is formed of a soft synthetic resin material. A cannula body 1 includes a body tube part 2 disposed under the face nose, and an upper surface of the body tube part 2. Left and right ends of the main body tube section connecting a pair of left and right nostril tubes 3 and 3 which are erected on the section and inserted into a nostril, and a tube T (shown in phantom lines) connected to a gas supply means such as an oxygen cylinder 4 and 4.

  The main body tube portion 2 is bent in the direction along the face at the central portion 2X, and the thickness of the bent central portion 2X (portion indicated by the IV-IV line in FIG. 2) is as shown in FIG. As shown in FIG. 4, the outer surface portion 2B, which is the surface facing the face contact surface portion 2A, is larger than the face contact surface portion 2A that is the surface that contacts the face. .

  As a preferred example of the configuration for increasing the thickness of the outer side surface portion 2B of the bent central portion 2X of the main body tube portion 2, as shown in FIGS. 1 and 3 of the present embodiment, the outer side of the central portion 2X. By forming a square portion projecting from the surface on the surface of the surface portion 2B, the thickness of this portion is increased.

  By making the outer surface 2B thicker than the face contact surface 2A, the thickness of the central portion 2X of the bent main body tube 2 is made soft so that the entire cannula body 1 can be easily adapted to the face with a soft synthetic resin material. Even if it forms, it can prevent the deformation | transformation crushing in the center part 2X of the main body pipe part 2 which is easy to apply a stress burden. When stress is applied, stress is most easily concentrated on the outer surface 2B of the central portion 2X. Therefore, by increasing the thickness of the outer surface 2B of the central portion 2X, the shape maintaining force at this portion can be increased. This will prevent deformation. By preventing the deformation from being crushed, there is no possibility of blocking due to the air passage P being crushed, so that a gas such as oxygen can be reliably supplied.

  As shown in FIG. 3, in the ventilation path P, it is preferable that the tube inner diameter P1 at the central portion 2X of the main body tube portion 2 is larger than the tube inner diameter P2 of other portions other than the central portion 2X. By increasing the pipe inner diameter of the ventilation path P at the central portion 2X, oxygen supplied to the ventilation path P between this part, that is, the part where the pair of left and right nostril tubes 3 and 3 are erected is provided. As a result, a gas reservoir (reservoir) such as oxygen is generated, so that the supply of gas such as oxygen becomes more stable.

  The cannula body 1 of the cannula having the above-described structure is formed without particular limitation by a publicly known material as a material of this type of cannula, and is formed by, for example, a soft synthetic resin such as soft vinyl chloride, soft polyethylene, or soft polypropylene. More preferably, it is formed of soft vinyl chloride.

  Moreover, as a formation method, it can form without a special restriction | limiting by the publicly known method as a formation method of this kind of cannula. A preferable forming method is a dipping method (so-called dipping).

  As mentioned above, although one Example of the cannula which concerns on this invention was described, this invention is not limited above, For example, the various aspects as follows can be taken.

  The thickness of the bent central portion 2X of the main body tube portion 2 (portion indicated by the line IV-IV in FIG. 2) is not limited to the configuration in which the outer surface portion 2B of the above embodiment is larger than the face contact surface portion 2A. As shown in FIG. 5 (A), the lower surface portion 2C may be large, or as shown in FIG. 5 (B), the upper surface portion 2D may be large, as shown in FIG. 5 (C). As shown in FIG. 5 (D), the outer surface 2B and the lower surface 2C may be large, or the outer surface 2B and the upper surface 2D may be large as shown in FIG. 5 (D). As shown in FIG. 5F, the bottom surface 2C and the top surface 2D may be large, or the outer surface 2B, the bottom surface 2C, and the top surface 2D may be large.

  In the present invention, the main body tube portion 2 is shown with a quadrangular cross-sectional shape having a face contact surface portion 2A, an outer surface portion 2B, a lower surface portion 2C, and an upper surface portion 2D. It is not limited to a quadrilateral having a part, it may be a rounded square, a round having a corner, a polygon with a rounded corner, a circle or an ellipse, etc. The outer periphery of the arbitrary cross-sectional shape is divided into approximately four equal parts, the side in contact with the face is referred to as the face contact surface portion, and the side facing the face contact surface portion is referred to as the outer surface, and the nostril tubes 3 and 3 are erected. The surface side is referred to as an upper surface portion, and the surface side facing the upper surface is referred to as a lower surface portion.

  In each of the embodiments illustrated in FIGS. 5A to 5F, as a preferable example of the configuration for increasing the thickness of the bent central portion 2X of the main body tube portion 2, as in the above-described embodiment, The thickness of the central portion 2X is increased by forming a square portion protruding from the surface on the surface of each portion where the thickness of the central portion 2X is increased. For example, in the case of the aspect in which the thickness of the lower surface portion 2C shown in FIG. 5A is large, as shown in FIG. 6, an angular portion protruding from the surface is formed on the surface of the lower surface portion 2C. Thus, the thickness of this portion can be increased.

  In addition, the square part referred to in the present invention does not only indicate a square part having a sharp apex, but also includes a mountain shape in which the apex part is rounded or a bulge that appears to be substantially square.

The top view which shows one Example of the cannula which concerns on this invention Front view of FIG. III-III sectional view of FIG. IV-IV line enlarged end view of FIG. FIG. 2 is an enlarged end view showing another embodiment of the end surface portion taken along the line IV-IV in FIG. Sectional drawing which shows the other Example of the VI-VI line | wire cross-section part of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cannula main body 2 Main body pipe part 2A Face contact surface part 2B Outer side surface part 2C Lower surface part 2D Upper surface part 2X Center part 3 Nostril pipe 4 Right and left both ends T Tube P Ventilation path

Claims (6)

The main body of the cannula communicates with a main body tube portion disposed under the face nose, a pair of left and right nostril tubes that are erected on the upper surface of the main body tube portion and inserted into the nostrils, and a gas supply means such as an oxygen cylinder In the cannula having the left and right ends of the main body pipe part to which the tube is connected,
The central portion of the main body tube portion is bent in a direction along the face, and the wall thickness of the bent central portion of the main body tube portion is at least the face contact surface portion that is a surface in contact with the face. A cannula characterized in that an outer surface portion that is a surface facing the contact surface portion, a lower surface portion that is a surface facing the upper surface portion, and / or the upper surface portion is large. The main body of the cannula communicates with a main body tube portion disposed under the face nose, a pair of left and right nostril tubes that are erected on the upper surface of the main body tube portion and inserted into the nostrils, and a gas supply means such as an oxygen cylinder In the cannula having the left and right ends of the main body pipe part to which the tube is connected,
The central portion of the main body tube portion is bent in a direction along the face, and the wall thickness of the bent central portion of the main body tube portion is at least the face contact surface portion that is a surface in contact with the face. A cannula characterized in that an outer surface portion which is a surface facing the contact surface portion is large. The main body of the cannula communicates with a main body tube portion disposed under the face nose, a pair of left and right nostril tubes that are erected on the upper surface of the main body tube portion and inserted into the nostrils, and a gas supply means such as an oxygen cylinder In the cannula having the left and right ends of the main body pipe part to which the tube is connected,
The central portion of the main body tube portion is bent in a direction along the face, and the thickness of the bent central portion of the main body tube portion is at least the upper surface with respect to the face contact surface portion that is the surface in contact with the face. A cannula characterized in that a lower surface part which is a surface facing the part is large. The main body of the cannula communicates with a main body tube portion disposed under the face nose, a pair of left and right nostril tubes that are erected on the upper surface of the main body tube portion and inserted into the nostrils, and a gas supply means such as an oxygen cylinder In the cannula having the left and right ends of the main body pipe part to which the tube is connected,
The central portion of the main body tube portion is bent in a direction along the face, and the thickness of the bent central portion of the main body tube portion is at least the upper surface with respect to the face contact surface portion that is the surface in contact with the face. A cannula characterized by a large part. The main body tube portion has a configuration in which a corner portion protruding from the surface is formed on the surface of any one of the outer surface portion, the upper surface portion, and the lower surface portion of the bent central portion, and the thickness of this portion is increased. The cannula according to any one of claims 1 to 4, wherein the cannula is provided. The cannula according to any one of claims 1 to 5, wherein a tube inner diameter of a central portion of the main body tube portion is larger than a tube inner diameter of another portion.

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