Cannula

Abstract

The objective is to provide a cannula in which water droplets do not accumulate on the prongs attached to the tip of the cannula. [Solution] An electrolytic unit decomposes the gas into oxygen gas and hydrogen gas, and the decomposed oxygen gas supply pipe and hydrogen gas supply pipe are each extended to a prong, and a cannula is connected to the prong, A water-stopping trap is provided in the middle of the oxygen gas supply pipe and the hydrogen gas supply pipe, respectively, to prevent the supply of water vapor contained in the oxygen gas and hydrogen gas to the prong. Each of the oxygen gas supply pipe and the hydrogen gas supply pipe is provided with a low-temperature section between the water-stopping trap and the prong, where the temperature is lower than in other parts.

Description

Technical Field

[0001] The present invention relates to a cannula for supplying two different inhalation gases to a user.

Background Art

[0002] In conventional cannulas, there are those in which the base end portion is bifurcated and a water trap is connected to a supply pipe that merges into one midway, and a prong is connected to the tip end portion, and those in which there is a single supply pipe from the base end portion to the tip end portion, a water trap is connected midway, and a prong is connected to the tip end portion.

[0003] Note that there is Patent Document 1 as a cannula used for high-flow oxygen therapy and composed of a single supply pipe from the base end portion to the tip end portion.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, the inhalation gases supplied to the cannula mainly include oxygen gas and hydrogen gas, and these gases contain water vapor.

[0006] To remove this water vapor, a water trap is provided between the base end portion and the tip end portion of the cannula, but it is difficult to completely remove the water vapor, and there is a problem that water droplets accumulate in the prong after passing through the water trap. For this reason, many users feel uncomfortable and it becomes necessary to frequently remove the water droplets accumulated in the prong.

[0007] Therefore, the objective of the present invention is to provide a cannula in which water droplets do not accumulate on the prongs attached to the tip of the cannula. [Means for solving the problem]

[0008] In order to solve these problems, The invention according to claim 1 is a cannula in which an electrolytic unit decomposes gas into oxygen gas and hydrogen gas, an oxygen gas supply pipe connected to the oxygen gas supply port of the electrolytic unit and a hydrogen gas supply pipe connected to the hydrogen gas supply port extend to a prong, the tip of the oxygen gas supply pipe is connected to one end of the prong, the tip of the hydrogen gas supply pipe is connected to the other end of the prong, a partition is provided in the center of one end and the other end of the prong, the oxygen gas is supplied to the prong from one end of the prong, the hydrogen gas is supplied to the prong from the other end of the prong, and the oxygen gas is injected from one of the two injection ports separated by the partition, and the hydrogen gas is injected from the other injection port. The oxygen gas supply pipe and the hydrogen gas supply pipe are formed in the shape of pipes, and the oxygen gas supply pipe and In each of the hydrogen gas supply pipes, the oxygen gas and A water-stopping trap is provided to prevent the supply of water vapor contained in the hydrogen gas to the prongs, and a low-temperature section is provided in a part of the oxygen gas supply pipe and the hydrogen gas supply pipe between the water-stopping trap and the prongs, which is lower in temperature than the other parts, by forming a metal material in the shape of a pipe, or a non-metallic material in the shape of a pipe, or by wrapping a metal wire around a resin, and each of the low-temperature sections is provided with the oxygen gas and When the hydrogen gas passes through the inside of the low-temperature section, the oxygen gas and The system is characterized in that the water vapor contained in the hydrogen gas condenses and liquefies, causing water droplets to form inside the low-temperature section, which then flow into the water-stopping trap.

[0009] The invention according to claim 2 is, An electrolytic unit decomposes oxygen gas and hydrogen gas, a supply pipe connected to the gas supply port of the electrolytic unit extends to a prong, the tip of the supply pipe is connected to one end and the other end of the prong, a partition is provided in the center of one end and the other end of the prong, the oxygen gas is supplied to the prong from one end of the prong, the hydrogen gas is supplied to the prong from the other end of the prong, and the oxygen gas is injected from one of the two injection nozzles separated by the partition, and the hydrogen gas is injected from the other injection nozzle, The supply pipe is formed in the shape of a pipe, and the oxygen gas is supplied in the middle of the supply pipe. and A water-stopping trap is provided to prevent the supply of water vapor contained in the hydrogen gas to the prongs, and a low-temperature section is provided in a part of the supply pipe between the water-stopping trap and the prongs, which is lower in temperature than the rest of the pipe, by forming a metal material in the shape of a pipe, or a non-metallic material in the shape of a pipe, or by winding a metal wire around a resin, and the low-temperature section is supplied with the oxygen gas and When the hydrogen gas passes through, the oxygen gas and The system is characterized in that the water vapor contained in the hydrogen gas condenses and liquefies, causing water droplets to form inside the low-temperature section, which then flow into the water-stopping trap.

[0010] The invention according to claim 3 is characterized in that the low-temperature section is a flexible metal tube connected at both ends to the other section.

[0011] Claim 4: The invention is characterized in that the water-stopping trap is provided with an absorbent member that absorbs water flowing from the low-temperature section, and the absorbent member is replaceable. [Effects of the Invention]

[0012] According to the invention described in claim 1, An electrolytic unit decomposes oxygen gas and hydrogen gas, and an oxygen gas supply pipe connected to the oxygen gas supply port of the electrolytic unit, and a hydrogen gas supply pipe connected to the hydrogen gas supply port, extend to the prongs, with the tip of the oxygen gas supply pipe connected to one end of the prongs and the tip of the hydrogen gas supply pipe connected to the other end of the prongs, a partition is provided in the center of one end and the other end of the prongs, oxygen gas is supplied to the prongs from one end of the prongs, hydrogen gas is supplied to the prongs from the other end of the prongs, and oxygen gas is injected from one of the two injection nozzles separated by the partition, and hydrogen gas is injected from the other injection nozzle, The oxygen gas supply pipe and the hydrogen gas supply pipe are formed in the shape of a pipe, and the oxygen gas supply pipe and In each of the hydrogen gas supply pipes, oxygen gas and A water-stopping trap is provided to prevent water vapor contained in the hydrogen gas from being supplied to the prongs. A low-temperature section is provided in a portion of the oxygen gas supply pipe and the hydrogen gas supply pipe between the water-stopping trap and the prongs, which is colder than the rest of the pipe, by forming a metal material in a pipe shape, or a non-metallic material in a pipe shape, or by wrapping a metal wire around a resin. Each of these low-temperature sections is supplied with oxygen gas and When hydrogen gas passes through the inside of the low-temperature section, oxygen gas and The system is designed so that the water vapor contained in the hydrogen gas condenses and liquefies, forming water droplets inside the low-temperature section, which then flow into the water-stopping trap. This prong structure allows for the supply of oxygen gas alone, hydrogen gas alone, or both oxygen and hydrogen gas from separate oxygen and hydrogen gas supply pipes. A temperature difference is created between the low-temperature sections of the oxygen and hydrogen gas supply pipes and the other sections. This causes water droplets to form in the low-temperature sections of the supply pipes, which then flow into the water-stopping trap, preventing water droplets from accumulating on the prongs.

[0013] The invention according to claim 2 is, An electrolytic unit decomposes gas into oxygen and hydrogen gas, and a supply pipe connected to the gas supply port of the electrolytic unit extends to the prongs. The tip of the supply pipe is connected to one end and the other end of the prongs, and a partition is provided in the center of one end and the other end of the prongs. Oxygen gas is supplied to the prongs from one end of the prongs, and hydrogen gas is supplied to the prongs from the other end of the prongs. The cannula is such that oxygen gas is injected from one of the two injection nozzles separated by the partition, and hydrogen gas is injected from the other injection nozzle. The supply pipe is formed in a pipe shape, and oxygen gas is supplied in the middle of the supply pipe. andA water stop trap is provided to prevent the supply of water vapor contained in hydrogen gas to the prong. A part of the supply pipe between the water stop trap and the prong is formed in a pipe shape with a metal material, or a non-metal material is formed in a pipe shape, or a metal wire is wound around a resin to form a low-temperature part that is colder than other parts. The low-temperature part is oxygen gas and When hydrogen gas passes through, oxygen gas and The water vapor contained in the hydrogen gas is condensed and liquefied, and water droplets are generated inside the low-temperature part and configured to flow into the water stop trap. The structure of this prong makes it possible to supply only oxygen gas, only hydrogen gas, or both oxygen gas and hydrogen gas from the supply pipe. A temperature difference occurs between the low-temperature part of oxygen gas and other parts, water droplets are generated in the supply pipe of the low-temperature part, flow into the water stop trap, and water droplets do not accumulate in the prong.

[0014] According to the invention described in claim 3, a flexible metal pipe whose both ends are connected to other parts of the oxygen gas supply pipe and the hydrogen gas supply pipe respectively is connected to the low-temperature part. Thereby, a temperature difference occurs between the flexible metal pipe of the low-temperature part and other parts, water droplets are generated inside the flexible metal pipe, and the water droplets can flow into the water stop trap.

[0015] According to the invention described in claim 4, the water stop trap is provided with an absorption member for absorbing the water flowing from the low-temperature part, and the absorption member is replaceable. Thereby, by periodically replacing the absorption member, the water droplets flowing into the water stop trap side do not flow to the prong side, and the user can comfortably receive the supply of oxygen and hydrogen.

Brief Description of the Drawings

[0016] [Figure 1] It is a schematic diagram of an electrolysis unit according to an embodiment of the present invention and a cannula attached to the electrolysis unit. [Figure 2] It is a schematic diagram of a cannula according to the first embodiment of the present invention. [Figure 3] It is a schematic diagram of a water stop trap mechanism according to the first embodiment of the present invention. [Figure 4]This is a perspective view of the water-stopping trap according to the first embodiment of the present invention when it is opened. [Figure 5] This is a schematic diagram of the prongs according to the first embodiment of the present invention. [Figure 6] This is a front view of a flexible metal pipe provided between a prong and a second water-stopping trap according to a first embodiment of the present invention. [Figure 7] This is a schematic diagram of a low-temperature section wrapped in metal, provided between the prong and the second water-stopping trap according to a second embodiment of the present invention. [Figure 8] This is a front view of a low-temperature section wrapped in metal according to a second embodiment of the present invention. [Figure 9] This is a schematic diagram of a cannula according to a third embodiment of the present invention. [Modes for carrying out the invention]

[0017] [First Embodiment of the Invention] Embodiments of this invention will be described with reference to Figures 1 to 6.

[0018] As shown in Figure 1, Electrolytic Unit 1 The oxygen gas outlet 2 and hydrogen gas outlet 3 provided in the cannula 4 are attached to the base end 5 of the oxygen gas supply pipe 7 and the base end 6 of the hydrogen gas supply pipe 8, respectively, so that oxygen gas and hydrogen gas are supplied to the cannula 4.

[0019] As shown in Figures 1, 2, and 5, the cannula 4 has both an oxygen gas supply pipe 7 and a hydrogen gas supply pipe 8 that extend to the prong 11.

[0020] Furthermore, the cannula 4 consists of an oxygen gas supply pipe 7 and a hydrogen gas supply pipe 8 made of resin (silicone in this embodiment), a first water stop trap 12 and a second water stop trap 13 (water stop traps as described in claim 1) made of plastic connected to the middle of the oxygen gas supply pipe 7 and the hydrogen gas supply pipe 8, a flexible metal pipe 14 made of stainless steel, and a prong 11 made of resin connected to the tip 15 of the oxygen gas supply pipe 7 and the tip 16 of the hydrogen gas supply pipe 8.

[0021] The two first water-stopping traps 12 are located near the base end 5 of the oxygen gas supply pipe 7 and the base end 6 of the hydrogen gas supply pipe 8, respectively, as shown in Figure 1, and are configured to absorb water vapor contained in the oxygen gas and hydrogen gas flowing through the first water-stopping traps 12.

[0022] The two second water-stopping traps 13 are located at positions far from the base end 5 of the oxygen gas supply pipe 7 and the base end 6 of the hydrogen gas supply pipe 8, respectively, as shown in Figure 1.

[0023] Furthermore, as shown in Figures 1, 3, and 4, the second water-stopping trap 13 is composed of a first divided body 18 and a second divided body 19, starting from the side closest to the flexible metal pipe 14 located between the prong 11 and the second water-stopping trap 13.

[0024] As shown in Figures 3 and 4, the first divided body 18 is formed in the shape of a cylindrical body 20, with a cylindrical portion 21 protruding from the inside of the cylindrical body 20. A space 22 is provided around the cylindrical portion 21 so that an absorbent member 26 made of a polymer absorbent can be replaced and attached or detached. The cylindrical portion 21 is formed to protrude from the outside, to which the oxygen gas supply pipe 7 and the hydrogen gas supply pipe 8 are connected.

[0025] Furthermore, the tip portion 23 of the first divided body 18 is formed to have a smaller diameter than the base portion 24, and two L-shaped grooves 27 are formed on the outer circumferential surface 25 of the tip portion 23 so as to face each other, and a packing 28 is provided at the lower part of the outer circumferential surface 25.

[0026] The second divided body 19 is formed in the shape of a cylindrical body 29, with a cylindrical portion 30 protruding from the inside of the cylindrical body 29, and a cylindrical portion 30 protruding from the outside to which the oxygen gas supply pipe 7 and the hydrogen gas supply pipe 8 are connected.

[0027] Furthermore, the tip portion 31 of the second divided body 19 is formed to have the same diameter as the base portion 32, and two protrusions 34 are formed on the inner circumferential surface 33 of the tip portion 31 so as to face each other.

[0028] The second water-stopping trap 13 is configured such that the tip 23 of the first divided body 18 is inserted into the tip 31 of the second divided body 19, two protrusions 34 on the inner circumferential surface 33 of the second divided body 19 are inserted into L-shaped grooves 27 formed on the outer circumferential surface 25 of the first divided body 18, and the first divided body 18 and the second divided body 19 are locked by twisting them, and are sealed by a packing 28 provided on the tip 23 of the first divided body 18.

[0029] Furthermore, the absorbent member 26 provided in the first divided body 18 of the second water stop trap 13 is configured to absorb water vapor contained in oxygen gas and hydrogen gas, as well as water droplets flowing from the flexible metal pipe 14.

[0030] Furthermore, the configuration of the first divided body 18 and the second divided body 19 of the first water-stopping trap 12 is the same as the configuration of the first divided body 18 and the second divided body 19 of the second water-stopping trap 13.

[0031] The flexible metal pipe is a low-temperature section located between the prongs 11 and the second water-stopping trap 13, as shown in Figures 1 and 2. As shown in Figures 1, 2, and 5, it is formed to be flexible and pliable, with a helical groove 39 formed from one end 37 to the other end 38 to increase the surface area, and the helical groove 39 is designed to lower the surface temperature.

[0032] As a result, the surface temperature of the flexible metal pipe 14 is configured to be lower than the temperatures of the oxygen gas supply pipe 7 and the hydrogen gas supply pipe 8, causing condensation inside the flexible metal pipe 14 to generate water droplets, which then flow into the first divided body 18 of the second water stop trap 13.

[0033] As shown in Figures 1 and 2, the prong 11 is connected to the tip 15 of the oxygen gas supply pipe 7 and the tip 16 of the hydrogen gas supply pipe 8. As shown in Figure 5, a partition 45 is provided in the center, with oxygen gas supplied to one end 42 and hydrogen gas supplied to the other end 43, and the supplied oxygen gas and hydrogen gas are ejected from two injection protrusions 36, respectively.

[0034] Next, the operation of this embodiment will be described.

[0035] As shown in Figure 1, Electrolytic Unit 1 The base end 5 of the oxygen gas supply pipe 7 and the base end 6 of the hydrogen gas supply pipe 8 of the cannula 4 are connected to the oxygen gas outlet 2 and hydrogen gas outlet 3, respectively, and oxygen gas is supplied to the oxygen gas supply pipe 7 and hydrogen gas to the hydrogen gas supply pipe 8.

[0036] As shown in Figures 1, 2, and 4, the oxygen gas supplied to the oxygen gas supply pipe 7 is supplied to the first water stop trap 12, where the water vapor contained in the oxygen gas is absorbed by the absorbent member 26 and passes through the first water stop trap 12.

[0037] The oxygen gas that has passed through the first water-stopping trap 12 is supplied to the second water-stopping trap 13 via the oxygen gas supply pipe 7, where the water vapor contained in the oxygen gas is absorbed by the absorbent member 26 and passes through the second water-stopping trap 13.

[0038] The oxygen gas that has passed through the second water-stopping trap 13 is supplied to the flexible metal pipe 14 from one end 37 of the flexible metal pipe 14 via the oxygen gas supply pipe 7, and passes through the inside of the flexible metal pipe 14.

[0039] When oxygen gas passes through the inside of the flexible metal tube 14, the surface temperature of the flexible metal tube 14 becomes lower than the temperature of the oxygen gas supply tube 7 in other parts, causing condensation as the internal temperature of the flexible metal tube 14 also decreases, and water droplets are generated inside the flexible metal tube 14. When the cannula 4 is used, the flexible metal tube 14 is above the second water stop trap 13, so the generated water droplets flow into the first divided body 18 of the second water stop trap 13 and are absorbed by the absorption member 26.

[0040] The absorbent member 26 requires periodic replacement.

[0041] The oxygen gas passing through the flexible metal pipe 14 passes through the other end 38 of the flexible metal pipe 14, and is supplied via the oxygen gas supply pipe 7 from one end 42 of the prong 11 connected to the tip 15 of the oxygen gas supply pipe 7.

[0042] Furthermore, as shown in Figures 1, 2, and 4, the hydrogen gas supplied to the hydrogen gas supply pipe 8 is supplied to the first water stop trap 12, where the water vapor contained in the hydrogen gas is absorbed by the absorbent member 26 and passes through the first water stop trap 12.

[0043] The hydrogen gas that has passed through the first water-stopping trap 12 is supplied to the second water-stopping trap 13 via the hydrogen gas supply pipe 8, where the water vapor contained in the hydrogen gas is absorbed by the absorbent member 26 and passes through the second water-stopping trap 13.

[0044] The hydrogen gas that has passed through the second water-stopping trap 13 is supplied to the flexible metal pipe 14 from one end 37 of the flexible metal pipe 14 via the hydrogen gas supply pipe 8, and passes through the inside of the flexible metal pipe 14.

[0045] As hydrogen gas passes through the flexible metal pipe 14, the surface temperature of the flexible metal pipe 14 becomes lower than the temperature of the hydrogen gas supply pipe 8 in other parts, causing the internal temperature of the flexible metal pipe 14 to drop and condensation to occur. Water droplets form inside the flexible metal pipe 14, and these droplets flow into the first divided body 18 of the second water stop trap 13 and are absorbed by the absorption member 26.

[0046] The absorbent member 26 requires periodic replacement.

[0047] The hydrogen gas passing through the flexible metal pipe 14 passes through the other end 38 of the flexible metal pipe 14, and is supplied via the hydrogen gas supply pipe 8 from the other end 43 of the prong 11 connected to the tip 16 of the hydrogen gas supply pipe 8.

[0048] As shown in Figure 5, oxygen gas supplied from one end 42 of the prong 11, which has a partition 45 inside, and hydrogen gas supplied from the other end 43 are each injected into the nasal cavity 44 from the injection protrusion 36.

[0049] As described above, the oxygen and hydrogen gases injected from the injection projection 36 of the prong 11 are separated by the first water-stopping trap 12, the second water-stopping trap 13, and the flexible metal tube 14, which remove the water vapor contained in the oxygen and hydrogen gases, resulting in a cannula 4 in which no water droplets accumulate on the prong 11. [Second Embodiment of the Invention] Next, an embodiment using a different structure from the low-temperature section of the first embodiment described above will be explained with reference to Figures 7 and 8.

[0050] As shown in Figures 7 and 8, the low-temperature section 46 between the second water-stopping trap 13 and the prong 11 is equipped with a Teflon® tube 40, and a metal 41 (for example, aluminum) is formed to be spirally wrapped around the surface of the Teflon tube 40.

[0051] The Teflon tube 40, around which the metal 41 is spirally wound, is configured to have a surface temperature lower than the temperatures of the other parts of the oxygen gas supply tube 7 and hydrogen gas supply tube 8. Condensation occurs inside the Teflon tube 40, around which the metal 41 is spirally wound, causing water droplets to form. These water droplets then flow into the absorbent member 26 provided in the first divided body 18 of the second water stop trap 13.

[0052] The following explanation is omitted as it is the same as the structure and operation of the first embodiment. [Third Embodiment of the Invention] Next, an embodiment using a cannula 51 that is different in form from the first and second embodiments described above. About This will be explained using Figure 9.

[0053] As shown in Figure 9, Electrolytic unit The base end 50 of the mixed gas supply pipe 49 is attached to a mixed gas outlet (not shown) located at (not shown), and the mixed gas of hydrogen gas and oxygen gas is supplied to the cannula 51.

[0054] The cannula 51 consists of a mixed gas supply pipe 49 made of resin, a first water stop trap 12 and a second water stop trap 13 connected in the middle of the mixed gas supply pipe 49, an aluminum pipe 54 which is a low-temperature section 46, and a prong 52 connected to the tip 53 of the mixed gas supply pipe 49.

[0055] Furthermore, the cannula 51 is configured such that the mixed gas supply pipe 49 is forked between the tip 55 of the aluminum pipe 54 and the prong 52, and connected to one end 56 and the other end 57 of the prong 52, so that the mixed gas can be supplied.

[0056] The aluminum pipe 54 is a low-temperature section 46 located between the second water-stopping trap 13 and the prong 52. The aluminum pipe 54 is configured such that the surface temperature is lower than that of the mixed gas supply pipe 49 in the other parts. Condensation occurs inside the aluminum pipe 54, generating water droplets, which then flow into the first divided body 18 of the second water-stopping trap 13.

[0057] The prong 52 is configured such that the tip 53 of the bifurcated mixed gas supply pipe 49 is connected to one end 56 and the other end 57 of the prong, and the mixed gas is supplied and ejected from the two injection protrusions 58.

[0058] Next, the operation of this embodiment will be described.

[0059] The mixed gas supplied to the mixed gas supply pipe 49 passes through the mixed gas supply pipe 49, through the first water stop trap and the second water stop trap, and through the mixed gas supply pipe 49 again, passing inside the aluminum pipe 54.

[0060] As the mixed gas passes through the inside of the aluminum pipe 54, the surface temperature of the aluminum pipe 54 becomes lower than the temperature of the mixed gas supply pipe 49 in other parts, causing the temperature inside the aluminum pipe 54 to drop. Condensation occurs, causing water droplets to form inside the aluminum pipe 54. These water droplets flow into the first divided body 18 of the second water stop trap 13 located below the aluminum pipe 54 and are absorbed by the absorption member 26.

[0061] The absorbent member 26 requires periodic replacement.

[0062] The mixed gas passing through the aluminum pipe 54 passes through the tip 55 of the aluminum pipe 54, then through the mixed gas supply pipe 49 which is bifurcated between the tip 55 of the aluminum pipe 54 and the prong 52, and is supplied from one end 56 and the other end 57 of the prong 11 which is connected to the tip 53 of the mixed gas supply pipe 49.

[0063] The mixed gas supplied to the prong 52 is injected from the injection projection 58 into the nasal cavity (not shown).

[0064] The structure and operation of the first water-stopping trap 12 and the second water-stopping trap 13 are the same as in the first embodiment, so their explanation will be omitted.

[0065] As described above, the mixed gas injected from the injection projection 36 of the prong 52 has its water vapor removed by the first water-stopping trap 12, the second water-stopping trap 13, and the aluminum tube 54, resulting in a cannula 4 in which no water droplets accumulate on the prong 52.

[0066] Furthermore, regarding the material of the flexible metal pipe 14 described in the first embodiment, any metal material may be used as long as the low-temperature section 46 between the second water-stopping trap 13 and the prong 11 is made of a material that is colder than the temperature of the oxygen gas supply pipe 7 and hydrogen gas supply pipe 8 in the other parts, and does not cause water rust, and no water droplets will accumulate on the prong 11.

[0067] In the second embodiment, a non-metallic Teflon tube 40 with metal 41 spirally wound around it is used in the low-temperature section 46 between the second water-stopping trap 13 and the prong 11. death However, it is not limited to Teflon material, as long as it is a non-metallic material that is colder than the oxygen gas supply pipe 7 and hydrogen gas supply pipe 8 in the other parts.

[0068] Furthermore, in the low-temperature section 46 between the second water-stopping trap 13 and the prong 11, metal may be wrapped around a portion of the oxygen gas supply pipe 7 and hydrogen gas supply pipe 8, which are made of resin, to make them cooler than the rest of the oxygen gas supply pipe 7 and hydrogen gas supply pipe 8, thereby making effective use of the available cannulas. [Explanation of symbols]

[0069] 1 Electrolytic unit 2. Oxygen gas outlet 3. Hydrogen gas outlet 4 Cannulas 5 Proximal end 6 Proximal end 7. Oxygen gas supply pipe 8. Hydrogen gas supply pipe 11 Prongs 12. First water stop trap 13. Second water-stopping trap 14 Flexible metal pipes 15 Tip 16 Tip 18 First division body 19 Second split body 20 cylinder 21 Cylindrical section 22 Space 23 Tip 24 Proximal end 25 Outer surface 26 Absorbing material 27 L-shaped grooves 28 Packing 29 Cylinder 30 Cylindrical section 31 Tip 32 Proximal end 33 Inner peripheral surface 34 Protrusion 35 water drops 36 Injection protrusion 37 One end 38 The other end 39. Helical groove 40 Teflon tubes 41 metal 42 One end 43 Other end 44 Nasal cavity 45 compartments 46 Low-temperature section 47 One end 48 The other end 49. Mixed gas supply pipe 50 Proximal end 51 Cannula 52 Prongs 53 Tip 54 Aluminum pipe 55 Tip 56 One end 57 Other end 58 Injection protrusion

Claims

1. A cannula that decomposes into oxygen gas and hydrogen gas by an electrolytic unit, and has an oxygen gas supply pipe connected to an oxygen gas supply port of the electrolytic unit, and a hydrogen gas supply pipe connected to a hydrogen gas supply port, extending to a prong, the tip of the oxygen gas supply pipe connected to one end of the prong, the tip of the hydrogen gas supply pipe connected to the other end of the prong, a partition is provided in the center of one end and the other end of the prong, the oxygen gas is supplied to the prong from one end of the prong, the hydrogen gas is supplied to the prong from the other end of the prong, and the oxygen gas is injected from one of the two injection ports separated by the partition, and the hydrogen gas is injected from the other injection port, The oxygen gas supply pipe and the hydrogen gas supply pipe are formed in a pipe shape, and a water-stopping trap is provided in the middle of the oxygen gas supply pipe and the hydrogen gas supply pipe, respectively, to prevent the supply of water vapor contained in the oxygen gas and hydrogen gas to the prongs. In the oxygen gas supply pipe and the hydrogen gas supply pipe between the water stop trap and the prong, a low-temperature section is provided in each section, which is colder than the rest of the pipe, by forming a metal material in a pipe shape, or a non-metallic material in a pipe shape, or by wrapping a metal wire around a resin. Each of the low-temperature sections of the cannula is configured such that, when the oxygen gas and hydrogen gas pass through the inside of the low-temperature section, the water vapor contained in the oxygen gas and hydrogen gas condenses and liquefies, causing water droplets to form inside the low-temperature section and flow into the water-stopping trap.

2. A cannula in which an electrolytic unit decomposes a gas into oxygen gas and hydrogen gas, a supply pipe connected to the gas supply port of the electrolytic unit extends to a prong, the tip of the supply pipe is connected to one end and the other end of the prong, a partition is provided in the center of one end and the other end of the prong, the oxygen gas is supplied to the prong from one end of the prong, the hydrogen gas is supplied to the prong from the other end of the prong, and the oxygen gas is injected from one of the two injection ports separated by the partition, and the hydrogen gas is injected from the other injection port, The supply pipe is formed in a pipe shape, and a water-stopping trap is provided in the middle of the supply pipe to prevent the supply of water vapor contained in the oxygen gas and hydrogen gas to the prongs. A low-temperature section is provided in a portion of the supply pipe between the water-stopping trap and the prong, by forming a metal material in the shape of a pipe, or a non-metallic material in the shape of a pipe, or by wrapping a metal wire around a resin, thereby resulting in a lower temperature than the rest of the pipe. The cannula is characterized in that the low-temperature section is configured such that when the oxygen gas and hydrogen gas pass through it, the water vapor contained in the oxygen gas and hydrogen gas condenses and liquefies, water droplets are generated inside the low-temperature section, and these droplets flow into the water-stopping trap.

3. The cannula according to claim 1 or 2, characterized in that the low-temperature section is a flexible metal tube connected at both ends to the other section.

4. The cannula according to claim 1 or 2, characterized in that the water-stopping trap is provided with an absorbent member that absorbs water flowing from the low-temperature section, and the absorbent member is replaceable.

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