JP3157855U - Oxygen supply equipment - Google Patents

Abstract

When a proximal end portion of a tube connected to a nostril cannula is connected to a connector of an oxygen supply source by a connecting sleeve, the removal force from the connector of the connecting sleeve is reduced and stabilized. An oxygen supply device is provided. An embossing region is formed on an inner peripheral surface of a connector insertion portion on a side opposite to a tube insertion portion of a connecting sleeve, and an uneven processing including embossing is performed on the inner peripheral surface of this portion. At the same time, a lubricant is applied to the inner peripheral surface that has been subjected to the uneven processing. [Selection] Figure 4

Description

  The present invention relates to an oxygen supply device, and more particularly to an oxygen supply device configured to supply oxygen from an oxygen supply source into a nostril through a tube and a nostril cannula.

  For example, as disclosed in Utility Model Registration No. 3107787 and Utility Model Registration No. 3108599, a nostril cannula is used for oxygen therapy or respiratory therapy for patients with dyspnea or hypoxia. The nostril cannula is mounted on the face along the left-right direction at the site under the nose, and a pair of protrusions provided at the middle part are inserted into the entrance part of the nostril to draw oxygen from the oxygen supply source. It is supplied into the nostril through the tube and the protrusion.

  An oxygen supply device using such a nostril cannula connects the oxygen supply tube to an oxygen generator or oxygen cylinder, and opens an adjustment knob provided in the connection portion or connection unit, thereby allowing the tube to pass through the tube. Oxygen must be supplied to the nostril cannula. Here, the oxygen supply to the oxygen generator or the oxygen cylinder is performed as necessary. When the oxygen supply is not required, the connection knob or the adjustment knob of the connection unit is closed, and thereafter The tube will be removed from the connector. That is, the connection and disconnection of tubes to and from oxygen sources such as oxygen generators or oxygen cylinders are done depending on the patient's need for oxygen and are frequently or sometimes performed. To do. When the patient moves, it is necessary to connect the tube removed from the oxygen generator to the oxygen cylinder for movement. That is, the tube must be easily and reliably attached to and detached from the oxygen supply source.

  On the other hand, if leakage occurs at the connection between the tube and the oxygen supply source, oxygen will leak. In particular, in the case of an oxygen cylinder, since the amount of oxygen filled therein is constant, attention must be paid to gas leakage at the connection portion so that oxygen is not consumed wastefully.

  In addition, the connecting sleeve on the distal end side of the tube connected to the nostril cannula must be connected to the connector provided in the oxygen generator or oxygen cylinder with an appropriate force, or be removable. . This is because the patient itself often has to connect and remove the connecting sleeve from the oxygen source as needed. That is, it is necessary to improve the operability of the connection between the connection sleeve and the connector of the oxygen supply source. However, the connection between the connecting sleeve and the connector of the oxygen supply source should not come off with a slight force.

Utility Model Registration No. 3107787 Utility Model Registration No. 3108599

  An object of the present invention is to provide an oxygen supply device in which the connection between an oxygen supply source and a tube for supplying oxygen to a nostril cannula can be easily performed.

  Another object of the present invention is to provide an oxygen supply apparatus in which the proximal end side of a tube connected to a nostril cannula can be connected to an oxygen supply source with a light force through a connection sleeve.

  Another problem of the present invention is that the connection sleeve on the nostril cannula side and the connector on the oxygen supply source side are easy to attach and detach, and the operation force is moderately small while being difficult to remove with a slight force. It is an object of the present invention to provide an oxygen supply device in which there is no variation in operating force.

  The above-described problems and other problems of the present invention will be clarified by the technical idea of the present invention described below and the embodiments thereof.

  The main idea of the present application is that the oxygen supply device is configured to supply oxygen from an oxygen supply source into a nostril through a tube and a nostril cannula, through the connection sleeve having an uneven surface on the inner peripheral surface. The present invention relates to an oxygen supply apparatus characterized in that a tube is connected to the oxygen supply source, and a portion of the connection sleeve that has been subjected to the unevenness processing is connected to a connector of the oxygen supply source.

  Here, the unevenness of the inner peripheral surface of the connecting sleeve may be embossed in a range of 2 to 100 μm.

  Further, a lubricant such as silicone may be interposed between the inner peripheral surface of the sleeve and the outer peripheral surface of the connector and in a range from the tip of the sleeve to 30 mm.

  The main idea of the present application is an oxygen supply device that supplies oxygen from an oxygen supply source into a nostril through a tube and a nostril cannula, and a tube through a connection sleeve having an uneven surface on the inner peripheral surface. Is connected to the oxygen supply source, and the portion of the connection sleeve that has been subjected to the uneven processing is connected to the connector of the oxygen supply source.

  According to such a characteristic oxygen supply device, the operation force for connecting and disconnecting the connecting sleeve and the connector of the oxygen supply source is set to a small value by the uneven processing applied to the inner peripheral surface of the connecting sleeve. In addition, it is possible to reduce the variation in the operating force, and to provide an oxygen supply device that is particularly excellent in detachability between the tube on the nostril cannula side and the oxygen supply source. .

It is a front view which shows the state which has mounted | worn with a nostril cannula. It is the top view (A) and front view (B) of a nostril cannula. It is a perspective view of the oxygen generator and oxygen cylinder which comprise an oxygen supply source. It is a longitudinal cross-sectional view of the connection sleeve and the connector on the oxygen supply source side. It is the longitudinal cross-sectional view (A) which shows expansion-contraction of the connection sleeve, and the longitudinal cross-sectional view (B) of the state which connected this connection sleeve to the connector. It is a longitudinal cross-sectional view of the metal mold | die which shape | molds the connection sleeve. It is an exploded sectional view of the metallic mold. It is a disassembled perspective view of the metal mold | die. It is a principal part enlarged plan view which shows the uneven | corrugated process which consists of embossing given to the sleeve for connection. It is a graph which shows distribution of the value of each pulling-out power for every arbitrary times by attaching and detaching each of the seven connecting sleeves coated with silicone to the connector of the oxygen supply source a plurality of times. Distribution of pull-out force values when multiple un-embossed connecting sleeves and unembossed connecting sleeves are connected to the oxygen source connector without silicone coating It is a graph which shows.

  The present invention will be described below with reference to the illustrated embodiments. As shown in FIG. 1, the nostril cannula 11 of the present embodiment is mounted on the face of a patient so as to extend in the right and left direction at a portion just below the nose, and oxygen from the oxygen supply source into the nostril. Used to supply Such nostril cannula is a kind of medical device for stomatal therapy, and is widely used for oxygen therapy for hypoxic patients and the like.

  As shown in FIGS. 2A and 2B, the nostril cannula 11 includes a central portion 12 in the length direction, a pair of end portions 13 on both sides of the central portion 12, and a pair of protrusions 14 in the central portion 12. Is provided. The central portion 12 is hollow and has a flat rectangular tube shape, and the end portion 13 and the protruding portion 14 have a hollow cylindrical shape. As shown in FIG. 2A, the pair of projecting portions 14 project upward from the top surface portion of the flat central portion 12 in the shape of a rectangular tube to the top surface portion. The inside of the end portion 13 and the inside of the central portion 12 are in communication with each other, and the inside of the central portion 12 and the inside of the protruding portion 14 are also in communication with each other.

  The nostril cannula 11 is in the shape of a letter “he” when viewed from the axial direction with respect to the axial center of the protruding portion 14 at a portion between the pair of protruding portions 14 (see FIG. 2A). Further, the end portion 13 is bent with respect to the central portion 12 in a plane including the portion between the bent portion and the end portion 13 in the central portion 12 and the axis of the projecting portion 14 in this portion. (See FIG. 2B). The nostril cannula 11 is formed of a soft transparent or nearly translucent synthetic resin or synthetic rubber such as polyvinyl chloride or a styrene elastomer added with a plasticizer. If it is transparent, it will not stand out. Further, the outer and inner surfaces of the nostril cannula 11 have a surface roughness of about 0.8.

  One end portion of the cylindrical tube 15 is inserted and fixed to each of the pair of end portions 13 of the nostril cannula 11, and the end portions of the pair of tubes 15 are slidable on the tube 15 as shown in FIG. The other end of the tube 18 is connected to an oxygen generation source such as an oxygen generator 22 through a connection sleeve 20 while being fixed to the connection pipe 17 in a state of being collected by the stopper ring 16. The cylindrical tube 15 is a general-purpose product, and the pair of end portions 13 of the nostril cannula 11 are similarly cylindrical so that the cylindrical tube 15 can be inserted and fixed.

  Next, an oxygen supply source for supplying oxygen to the nostril cannula 11 will be described. As shown in FIG. 3, an oxygen generator 22 or an oxygen cylinder 23 is used as an oxygen supply source. The oxygen generator 22 is for separating and generating oxygen from a mixed gas of oxygen and nitrogen constituting the atmosphere, and an oxygen generating mechanism such as a separation membrane is provided inside. In addition, a connection portion 25 is provided at the upper portion, and an adjustment knob 26 is rotatably attached to the upper portion of the connection portion 25, and a flow meter 27 is connected to the side portion as necessary. The flow rate of oxygen supplied by the flow meter 27 is instructed. In order to make the flow rate of oxygen appropriate, adjustment is performed by the adjustment knob 26. A connector 30 is attached to the front end side of the connection portion 25, and the connector 30 connects the proximal end portion of the tube 18 of the nostril cannula 11 to the oxygen generator 22 via the connection sleeve 20. I have to.

  On the other hand, the oxygen cylinder 23 is connected to a connection unit 28 having a rectangular parallelepiped shape at the upper portion thereof, and an adjustment knob 26 is provided at the upper portion of the connection unit 28. A flow meter 27 is attached to indicate the flow rate of supplied oxygen. Accordingly, the flow rate of oxygen supplied by the adjustment knob 26 can be adjusted while looking at the pointer of the flow meter 27. Further, a connector 30 is provided on the front end side of the connection unit 28, and this connector 30 is connected to the connection sleeve 20 on the proximal end side of the tube 18 of the nostril cannula 11, whereby the nostril is connected from the oxygen cylinder 23. Oxygen is supplied to the cannula 11.

  When the nostril cannula 11 is used for respiratory therapy for a hypoxic patient, as shown in FIG. 1, a pair of protrusions 14 are inserted into the nostril of the patient so that the nostril cannula 11 extends along the lower part of the nose. Make it. Then, the position of the stopper ring 16 on the tube 15 is adjusted by putting the pair of tubes 15 on both ears and sliding the stopper ring 16 on the tubes 15. This adjustment prevents the tube 15 from moving or swinging relative to the head, thereby fixing the position of the nostril cannula 11 relative to the face.

  As described above, since the nostril cannula 11 has the shape of “F”, the nostril cannula 11 can be easily placed along the upper jaw when worn on the patient. Further, since the end portion 13 is bent with respect to the central portion 12 as described above, the tube 15 inserted and fixed to the end portion 13 can be easily extended toward the ear. In such a mounted state, oxygen generated by the oxygen generator 22 or the like protrudes through the connecting sleeve 20, the tube 18, the connecting tube 17, the tube 15, the end portion 13 and the central portion 12 of the nostril cannula 11. Oxygen therapy is performed by supplying the patient's nostrils from the unit 14.

  Next, a configuration for connecting the connecting sleeve 20 and the connector 30 of the oxygen supply source, which is a feature of the present invention, will be described. FIG. 4 shows the connecting sleeve 20 and the connector 30, respectively. Here, the connecting sleeve 20 is formed of soft synthetic resin or synthetic rubber, and a tube insertion portion 33 is formed on one end side thereof. The tube insertion portion 33 is a straight circular hole, and the diameter thereof is, for example, 5.3 mm. On the other hand, a connector insertion portion 34 is formed on the opposite side of the connection sleeve 20. The connector insertion portion 34 has a larger value at the opening end side and a smaller value at the back. Here, for example, the opening end side has a diameter of 6.5 mm and the end side has a value of 4.0 mm. ing. In addition, the depth of the tube insertion portion 33 is 15 mm in the axial direction, whereas the length of the connector insertion portion 33 in the axial direction is set to a value of 30 mm.

  The connecting sleeve 20 has an embossed region 35 at least in the region on the inner peripheral surface of the connector insertion portion 34 and at the entrance side. The embossed region 35 is formed by inverting the irregularities formed on the projection of the mold during molding described later, and the surface is embossed as shown in FIG. Here, the length A in the axial direction of the emboss formation region 35 is set to a value of, for example, 30 mm, and embossing is performed on the inner peripheral surface of the region having a depth of 30 mm from the entrance of the connector insertion portion 34. It has been subjected. In addition, you may emboss on the internal peripheral surface of the connector insertion part 34, and the full length.

  The connector 30 connected to such a connection sleeve 20 is a cylindrical body in which a straight through hole 38 is formed so as to pass through the center portion thereof, and is composed of, for example, a molded body of metal or hard synthetic resin. Is done. In particular, a plurality of steps 39 having a sawtooth cross section are formed on the outer peripheral surface to which the connecting sleeve 20 is connected. The connecting sleeve 20 is connected to the region of length B where the step 39 is formed. Therefore, as shown in FIG. 5A, the connecting sleeve 20 is connected to the connector 30 such that the tip end portion of the connecting sleeve 20 is enlarged in the radial direction. FIG. 5B shows a state where the connector insertion portion 34 of the connection sleeve 30 is connected to the outer peripheral portion of the step 39 having the length B of the connector 30.

  6 to 8 show a forming die for forming the connecting sleeve 20 as described above. The forming die includes an upper die 45, a lower die 46, and a pair of left and right split dies 47, 48. Here, a cylindrical protrusion 49 projecting downward is formed on the lower surface of the upper mold 45, whereas a truncated cone-shaped protrusion 50 projecting upward is formed at the center of the upper surface of the lower mold 46. Is formed.

  When the upper mold 45, the lower mold 46, and the split molds 47 and 48 are assembled, the state shown in FIG. 6 is obtained. In particular, the lower end of the columnar projection 49 and the upper end of the truncated cone projection 50 protrude from each other. In the combined state, a gap is formed between the outer periphery of the cylindrical protrusion 49 and the outer periphery of the truncated cone protrusion 50 between the recesses of the split dies 47 and 48, and this gap forms a molding cavity. To do. Therefore, the connecting sleeve 20 can be injection-molded by injecting the molten resin into the cavity through a gate (not shown).

In particular, the feature of this mold is that the outer peripheral surface of the truncated cone-shaped protrusion 50 provided so as to protrude from the upper surface of the lower mold 46 is provided with unevenness for embossing the unevenness. The unevenness is performed by etching a predetermined region of the outer peripheral portion of the frustoconical protrusion 50. Such embossing has a remarkable feature that it is possible to reduce the detachment force of the connecting sleeve 20 to be molded with respect to the connector 30 and to reduce the variation thereof. In the concavo-convex processing, it is preferable that the center line average roughness of the concavo-convex forming surface is in the range of 2 to 30 μm. If the center line average roughness of the unevenness processing is smaller than 2 μm, the effect of applying the unevenness processing does not occur, and the force when the connecting sleeve 20 is pulled out from the connector 30 increases. On the other hand, when the center line average roughness of the unevenness forming surface exceeds 100 μm, oxygen easily leaks from between the connection sleeve 20 and the connector 30. In the present embodiment, the uneven processing is performed by embossing, and for example, it is configured by embossing of TH601 manufactured by Tanazawa Yako Co., Ltd. I try to secure it.

  Still another feature of the present embodiment is that, when connecting the connecting sleeve 20 and the connector 30, between the two and from the inlet of the connector insertion portion 34 to the inner peripheral surface in the region of the dimension C in FIG. Applying silicone. By applying such silicone, it is possible to reduce the removal force when the connection sleeve 20 is removed from the connector 30 and to stabilize it. FIG. 10 is a table and a graph showing the value of the pulling force when silicone is applied to the connector insertion portion 34 of the connecting sleeve 20 in particular.

  FIG. 10 shows the values of the pulling force for each arbitrary number of times by attaching and detaching seven (sample numbers 1 to 7) connecting sleeves coated with silicone to the connector of the oxygen supply source several times. It is the graph which showed distribution of. It is shown that by providing the embossed region 35 on the inner peripheral surface of the connector insertion portion 34 of the connecting sleeve 20 and applying silicone to the connector insertion portion 34, the variation in the pulling force is reduced. Further, as is apparent from the graph of FIG. 10, the maximum value of the pulling force is also smaller than 50N, and is substantially between 20 and 40N. This means that the maximum value of the pulling force when the connecting sleeve 20 to which the proximal end portion of the tube 18 of the nostril cannula 11 is connected is pulled out from the connector 30 of the oxygen generation source is small, but it may be extremely small. This shows that the variation in the extraction force is stable, which makes the operability excellent and makes it possible to remarkably improve the detachability of the connection sleeve 20 with respect to the oxygen supply source.

  FIG. 11 shows a measurement when the pulling force is measured in a state in which the connection sleeve 20 and the connector 30 having the same configuration and each of the ten connectors 30 not embossed are used and silicone is not applied. It is a graph which shows the dispersion | variation in a value. As is apparent from this graph, when silicone is not applied to the connection portion between the connection sleeve 20 and the connector 30, the removal force is remarkably high, and even when embossing is performed, the value is 60 N or more. When pulling out the connecting sleeve 20 from the connector 30 of the oxygen supply source, the removal force cannot be reduced to 50 N or less, and the value is almost twice the minimum value when silicone is applied. It is shown that it requires a lot of power. From this graph, it is considered that the variation in the extraction force is reduced by embossing.

  In the present invention, an embossing region 35 is provided on the inner peripheral surface of the connector insertion portion 34 of the connecting sleeve 20, and when silicone is applied to the connector insertion portion 34, the pulling force is reduced and the stabilization is achieved. Is possible. Therefore, when attaching / detaching the connecting sleeve 20 connected to the tube 18 of the nostril cannula 11, a large burden is not applied, and even a patient can easily attach / detach himself / herself.

  While the present invention has been described with reference to the illustrated embodiments, the present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the technical idea of the present invention. For example, the dimensions, shape, material, and the like of the connecting sleeve 20 and the connector 30 can be variously changed according to the purpose.

  The present invention can be used as an oxygen supply device for patients who have difficulty breathing or who have hypoxia.

DESCRIPTION OF SYMBOLS 11 Nostril cannula 12 Center part 13 End part 14 Protrusion part 15 Tube 16 Stopper ring 17 Connection pipe 18 Tube 20 Connection sleeve 22 Oxygen generator 23 Oxygen cylinder 25 Connection part 26 Adjustment knob 27 Flowmeter 28 Connection unit 30 Connector 33 Tube insertion Part 34 Connector insertion part 35 Embossing area 38 Through hole 39 Step 40 Flange 45 Upper mold 46 Lower mold 47, 48 Split mold 49 Cylindrical protrusion 50 Frustum-shaped protrusion

Claims (3)

In an oxygen supply device configured to supply oxygen from an oxygen supply source into a nostril through a tube and a nostril cannula,
The tube is connected to the oxygen supply source via a connection sleeve having an uneven surface on an inner peripheral surface, and the uneven portion of the connection sleeve is connected to a connector of the oxygen supply source. An oxygen supply device characterized in that it is configured as described above. 2. The oxygen supply device according to claim 1, wherein the center line average roughness of the unevenness forming surface of the inner peripheral surface of the connection sleeve is embossing in a range of 2 to 100 μm.   The oxygen supply device according to claim 1, wherein a lubricant is interposed between an inner peripheral surface of the sleeve and an outer peripheral surface of the connector.

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