An oxygen concentration output adjustable device

Abstract

The present application relates to highland oxygen absorption technical field, disclose a kind of oxygen concentration output adjustable device, including concentration control mechanism, oxygen cylinder, nasal catheter, breathing radar and controller, the oxygen cylinder one end is connected with the concentration control mechanism, the concentration control mechanism is connected with the nasal catheter, the concentration control mechanism is installed with breathing radar and controller, the concentration control mechanism includes transfer box, input component, piston plate, drive assembly, supplement component and switching component, by setting concentration control mechanism, breathing radar and controller, breathing radar is connected with human body detection human thoracic fluctuation, to determine the action of human inhalation and exhalation, when human inhale, mixed gas is output through nasal catheter, complete single oxygen supply operation to patient when inhale, targeted action capture oxygen for single inhalation action, as far as possible guarantee inhale time is directly inhale the mixed gas directly pressed out.

Description

Technical Field

[0001] This invention relates to the field of high-altitude oxygen absorption technology, specifically to an adjustable oxygen concentration output device. Background Technology

[0002] Generally, oxygen therapy is helpful for patients experiencing altitude sickness. Intermittent low-flow oxygen therapy can improve hypoxia symptoms, increase acclimatization to the high-altitude environment, and alleviate discomfort. As altitude increases, the concentration of external oxygen and air pressure decrease. When the human body moves from a relatively low-altitude area to a high-altitude area, it may experience altitude hypoxia in a short period of time due to the inability to tolerate the external air pressure and oxygen concentration.

[0003] Moreover, traditional oxygen inhalation increases the oxygen concentration by continuously delivering oxygen. The oxygen concentration (%) is calculated as 21 + 4 × oxygen flow rate (L / min). However, due to the thin air and low oxygen partial pressure at high altitudes, people often experience hypoxia. This hypoxia is caused by the decrease in atmospheric pressure, which reduces the amount of oxygen per unit volume of air. Under continuous oxygen supply, the commonly used nasal cannula cannot meet the required oxygen concentration.

[0004] Currently, the problem of maintaining a constant oxygen concentration remains unsolved in the diagnosis and treatment of high-altitude hypoxia. Among traditional flow-setting devices, only high-flow ventilators can maintain a constant oxygen concentration, but this cannot be solved in high-altitude hypoxic environments. The construction of hyperbaric oxygen chambers is limited by location, space, and time, making them inconvenient to use.

[0005] To address the aforementioned issues, this application proposes an adjustable oxygen concentration output device. Summary of the Invention

[0006] The purpose of this invention is to provide an adjustable oxygen concentration output device to solve the problem of difficulty in maintaining a constant oxygen concentration during the diagnosis and treatment of high-altitude hypoxia in the prior art, as mentioned in the background section.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an adjustable oxygen concentration output device, comprising a concentration control mechanism, an oxygen cylinder, a nasal cannula, a breathing radar, and a controller. One end of the oxygen cylinder is connected to the concentration control mechanism, the nasal cannula is connected to the concentration control mechanism, and the breathing radar and controller are mounted on the concentration control mechanism. The concentration control mechanism includes a transfer box, an input component, a piston plate, a drive component, a replenishment component, and a switching component. The input end of the nasal cannula is connected to the switching component, and two transfer boxes are connected to the switching component. The input component is mounted on the bottom of each of the two transfer boxes. The piston plate is slidably connected to the inner side of the transfer box, the drive component is mounted on the inner side of the piston plate, and the replenishment component is mounted on the inner side of the piston plate.

[0008] Furthermore, the inner side of the transfer box is square, and the outer side of the piston plate is attached to the inner wall of the transfer box.

[0009] Furthermore, the switching assembly includes a delivery tube, a piston block, an electric telescopic tube, a switching piston, and an output tube. The output tube is fixedly connected to the input end of the nasal cannula. The piston block is fixedly connected to the outer side of the output tube. The switching piston is slidably connected to the inner side of the piston block. The electric telescopic tube is fixedly connected to the right end of the switching piston. The electric telescopic tube penetrates the surface of the piston block and is fixedly connected to the outer side of the piston block. Two input holes are provided on the top of the piston block, and the delivery tube is fixedly connected to the inner side of each input hole. A switching hole is provided on the inner side of the switching piston.

[0010] Furthermore, a groove is provided on the inner side of the piston block, and the inner wall of the groove is square. The outer side of the switching piston is slidably connected to the groove. The movement trajectory of the switching hole is linear, and the input hole is located below the movement trajectory of the switching hole.

[0011] Furthermore, the switching component also includes a stop block, which is fixedly connected to the inner sidewall of the groove of the piston block, and the stop block is located on the top left side of the output tube.

[0012] Furthermore, the input component includes an input pipe, a solenoid valve, a check valve, and a pressure gauge. The input pipe is fixedly connected to the bottom of the transfer box, and the oxygen cylinder is connected to the bottom of the input pipe. The solenoid valve is installed on the input pipe, the check valve is installed on the input pipe, and the pressure gauge is installed on the input pipe. The solenoid valve is located below the check valve, and the check valve is located below the pressure gauge.

[0013] Furthermore, the filling assembly includes a mounting shell, a segmented cover, a connecting pipe, a spring, a sealing block, a baffle, a sliding rod, and a bracket. The mounting shell is fixedly connected to the inner side of the piston plate, and the mounting shell penetrates the surface of the piston plate. The segmented cover is fixedly connected to the top of the mounting shell, and the connecting pipe is fixedly connected to the top of the segmented cover. The spring is fixedly connected to the inner side of the top of the segmented cover. The sealing block is fixedly connected to the bottom end of the spring, and the baffle is fixedly connected to the bottom end of the sealing block. The sliding rod is slidably connected to the inner side of the sealing block, penetrating the surface of the sealing block and the surface of the baffle. The bracket is fixedly connected to the bottom end of the sliding rod, and the left and right ends of the bracket are fixedly connected to the inner sidewall of the mounting shell.

[0014] Furthermore, the drive assembly includes a fixed housing, a motor, an adjusting screw, a connecting sleeve, a rotating block, and a connecting block. A connecting groove is formed on the inner side of the piston plate, and the connecting block is fixedly connected to the inner side of this groove. The fixed housing is fixedly connected to the top of the transfer box, and the motor is fixedly connected to the inner side of the top of the fixed housing. The adjusting screw is fixedly connected to the output end of the motor, and the connecting sleeve is fixedly connected to the outer side of the adjusting screw. The connecting sleeve penetrates the surface of the transfer box, and the rotating block is fixedly connected to the outer side of the connecting sleeve. A rotating groove is formed on the inner side of the transfer box, and the outer side of the rotating block is rotatably connected to this groove. The outer side of the adjusting screw is threadedly connected to the inner wall of the connecting block.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This invention utilizes a concentration control mechanism, a respiratory radar, and a controller. The respiratory radar connects to the human body to detect the rise and fall of the chest cavity, thereby determining the inhalation and exhalation actions. When the human inhales, the controller reverses the motor on the gas transfer box, forcing the gas mixture into the delivery pipe via a piston plate. The gas mixture is then output through a nasal cannula, completing the oxygen supply for a single inhalation and achieving a constant oxygen concentration. This invention provides targeted oxygen supply by capturing the inhalation action, ensuring that the compressed gas mixture is directly inhaled during each inhalation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an adjustable oxygen concentration output device according to the present invention;

[0018] Figure 2 This is a schematic diagram of the installation structure of the input component of an adjustable oxygen concentration output device according to the present invention;

[0019] Figure 3 This is a schematic diagram of the installation structure of the drive assembly of an adjustable oxygen concentration output device according to the present invention.

[0020] Figure 4 This is a schematic diagram of the installation structure of the replenishment component of an adjustable oxygen concentration output device according to the present invention;

[0021] Figure 5 This is a schematic diagram of the switching component structure of an adjustable oxygen concentration output device according to the present invention.

[0022] In the picture:

[0023] 1. Concentration control mechanism; 11. Transfer box; 12. Input component; 121. Input pipe; 122. Solenoid valve; 123. Check valve; 124. Pressure gauge; 13. Piston plate; 14. Drive component; 141. Fixed housing; 142. Motor; 143. Adjusting screw; 144. Connecting sleeve; 145. Rotating block; 146. Connecting block; 15. Replenishment component; 151. Mounting housing; 152. Segmented cover; 153. Connecting pipe; 154. Spring; 155. Sealing block; 156. Baffle; 157. Slide rod; 158. Bracket; 16. Switching component; 161. Delivery pipe; 162. Piston block; 163. Electric telescopic pipe; 164. Switching piston; 165. Output pipe; 166. Stop block.

[0024] 2. Oxygen cylinders;

[0025] 3. Nasal cannula;

[0026] 4. Breathing radar;

[0027] 5. Controller. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] All standard parts used in this application can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, welding, and bonding that are mature in the prior art. The components used for circuit connection are all conventional models in the prior art.

[0030] Meanwhile, in order to clearly express the connection relationship and working principle between the components and highlight the key points, the accompanying drawings in the instruction manual are organized and drawn in the form of simplified diagrams. One simplified diagram can correspond to multiple materials and actual external structural shapes.

[0031] Please see Figures 1-5This invention provides a technical solution: an adjustable oxygen concentration output device, comprising a concentration control mechanism 1, an oxygen cylinder 2, a nasal cannula 3, a breathing radar 4, and a controller 5. One end of the oxygen cylinder 2 is connected to the concentration control mechanism 1, the nasal cannula 3 is connected to the concentration control mechanism 1, and the breathing radar 4 and controller 5 are installed on the concentration control mechanism 1. The concentration control mechanism 1 includes a transfer box 11, an input component 12, a piston plate 13, a drive component 14, a replenishment component 15, and a switching component 16. The input end of the nasal cannula 3 is connected to the switching component 16, and two transfer boxes 11 are connected to the switching component 16. The bottom of each of the two transfer boxes 11 is equipped with an input component 12. The piston plate 13 is slidably connected to the inner side of the transfer box 11, the drive component 14 is installed inside the piston plate 13, and the replenishment component 15 is installed inside the piston plate 13. The final standard for controlling oxygen concentration is the height of piston plate 13 when oxygen cylinder 2 is supplying oxygen / the total height of piston plate 13 rising. This is the oxygen concentration below piston plate 13 inside transfer box 11 at this time. Breathing radar 4 is connected to the human body to detect the rise and fall of the human chest cavity, thereby determining the human body's inhalation and exhalation actions. When the human body inhales, controller 5 controls motor 142 on transfer box 11, which has completed the mixing of gas, to reverse and push the mixed gas into delivery pipe 161 through piston plate 13. The mixed gas is output through nasal cannula 3, completing the oxygen supply operation for a single patient's inhalation. At the same time, another transfer box 11 prepares mixed gas. When the patient exhales, the mixed gas in the other transfer box 11 is ready. The inside of transfer box 11, which has already consumed mixed gas, also begins to prepare mixed gas. Electric telescopic tube 163 drives switching piston 164 to slide in piston block 162 to switch the input hole to align with the other delivery pipe 161. When the patient inhales again, the mixed gas in the other transfer box 11 is output through nasal cannula 3 and inhaled by the patient, achieving a constant concentration.

[0032] The inner side of the transfer box 11 is square, and the outer side of the piston plate 13 is in contact with the inner wall of the transfer box 11, so that the adjusting screw 143 can drive the piston plate 13 to move up and down through the threaded connection with the connecting block 146.

[0033] The switching assembly 16 includes a delivery tube 161, a piston block 162, an electric telescopic tube 163, a switching piston 164, and an output tube 165. The nasal cannula 3 has an output tube 165 fixedly connected to its input end. A piston block 162 is fixedly connected to the outside of the output tube 165. A switching piston 164 is slidably connected to the inside of the piston block 162. An electric telescopic tube 163 is fixedly connected to the right end of the switching piston 164, penetrating the surface of the piston block 162. The outside of the electric telescopic tube 163 is fixedly connected to the piston block 162. Two input holes are provided at the top of the piston block 162, arranged to the left and right. The inside of each input hole is fixedly connected to the piston block 164. A delivery pipe 161 is fixedly connected to the switching piston 164, which has a switching hole on its inner side. A sliding groove is formed on the inner side of the piston block 162, and the inner wall of the sliding groove is square. The outer side of the switching piston 164 is slidably connected to the sliding groove. The movement trajectory of the switching hole is linear. The input hole is located below the movement trajectory of the switching hole. The switching assembly 16 also includes a stop block 166, which is fixedly connected to the inner wall of the sliding groove of the piston block 162. The stop block 166 is located on the top left side of the output pipe 165. The breathing radar 4 is connected to the human body to detect the rise and fall of the human chest cavity, thereby determining the human body's inhalation and exhalation actions. When the human body... During inhalation, the controller 5 controls the motor 142 on the gas transfer box 11 to reverse, forcing the gas mixture into the delivery pipe 161 via the piston plate 13. At this time, the electric telescopic tube 163 should operate, driving the switching piston 164 to align its switching port with the corresponding delivery pipe 161. The one-way valve 123 prevents backflow of gas within the transfer box 11. Oxygen sequentially passes through the delivery pipe 161, the input port of the switching piston 164, and the output pipe 165. The gas mixture is then output through the nasal cannula 3, completing the oxygen supply for a single inhalation. Simultaneously, another transfer box 11... The mixed gas is prepared inside. When the patient exhales, the mixed gas in another transfer box 11 is ready. The inner side of the transfer box 11, which has already consumed the mixed gas, also begins to prepare mixed gas. The electric telescopic tube 163 drives the switching piston 164 to slide in the piston block 162 to switch the input hole to align with another delivery tube 161. When the patient inhales again, the mixed gas in the other transfer box 11 is output through the nasal cannula 3 and inhaled by the patient to achieve a constant concentration. The stop block 166 is used to limit the maximum position of the switching piston 164 to the right to prevent the switching piston 164 from blocking the output tube 165.

[0034] The input assembly 12 includes an input pipe 121, a solenoid valve 122, a check valve 123, and a pressure gauge 124. The input pipe 121 is fixedly connected to the bottom of the transfer box 11, and an oxygen cylinder 2 is connected to the bottom of the input pipe 121. The solenoid valve 122, the check valve 123, and the pressure gauge 124 are all installed on the input pipe 121. The solenoid valve 122 is positioned below the check valve 123, and the check valve 123 is positioned below the pressure gauge 124. The connecting block 146 drives the piston plate 13 to move upwards, thereby allowing oxygen from the oxygen cylinder 2 to pass through... When oxygen is delivered through the input pipe 121 into the transfer box 11, the solenoid valve 122 opens, allowing oxygen to enter the space below the piston plate 13 inside the transfer box 11. After the piston plate 13 rises to a certain height, the solenoid valve 122 closes, and the pressure gauge 124 can observe the oxygen pressure below the piston plate 13 inside the transfer box 11 at this time. Ideally, the oxygen pressure below the piston plate 13 inside the transfer box 11 at this time should be the average atmospheric pressure in the plateau region, thereby increasing the amount of oxygen per unit volume. During the inhalation action, the mixed gas is directly drawn in, thus achieving a constant oxygen supply concentration.

[0035] The supplementary assembly 15 includes a mounting shell 151, a segmented cover 152, a connecting pipe 153, a spring 154, a sealing block 155, a baffle 156, a sliding rod 157, and a bracket 158. The mounting shell 151 is fixedly connected to the inner side of the piston plate 13, and the mounting shell 151 penetrates the surface of the piston plate 13. The segmented cover 152 is fixedly connected to the top of the mounting shell 151, the connecting pipe 153 is fixedly connected to the top of the segmented cover 152, and the spring 154 is fixedly connected to the inner side of the top of the segmented cover 152. A sealing block 155 is fixedly connected to the bottom end of spring 154. A baffle 156 is fixedly connected to the bottom end of sealing block 155. A sliding rod 157 is slidably connected to the inner side of sealing block 155, penetrating the surface of sealing block 155 and the surface of baffle 156. A bracket 158 ​​is fixedly connected to the bottom end of sliding rod 157. The left and right ends of bracket 158 ​​are fixedly connected to the inner wall of mounting housing 151. After piston plate 13 rises to a certain height, solenoid valve 122 closes. Piston plate 13 continues to move upward, driving mounting shell 151 upward. The upward movement of piston plate 13 creates negative pressure in the space below piston plate 13 inside transfer box 11. The upward movement of piston plate 13, combined with atmospheric pressure, causes external air to push sealing block 155 downward, separating sealing block 155 from segment cover 152. Air enters the space below piston plate 13. The final height of piston plate 13's rise is controlled according to the required oxygen concentration. After piston plate 13 rises a certain distance, it stops. Spring 154 pulls sealing block 155, causing sealing block 155 to slide on slide rod 157. Sealing block 155 and baffle 156 seal segment cover 152, preventing external air from entering the space below piston plate 13. Slide rod 157 is supported by bracket 158. The final standard for controlling oxygen concentration is the height of piston plate 13 when oxygen cylinder 2 supplies oxygen / the total height of piston plate 13's rise, which is the oxygen concentration below piston plate 13 inside transfer box 11 at this time.

[0036] The drive assembly 14 includes a fixed housing 141, a motor 142, an adjusting screw 143, a connecting sleeve 144, a rotating block 145, and a connecting block 146. A connecting groove is formed on the inner side of the piston plate 13, and the connecting block 146 is fixedly connected to the inner side of this groove. The fixed housing 141 is fixedly connected to the top of the transfer box 11. The motor 142 is fixedly connected to the inner side of the top of the fixed housing 141. The adjusting screw 143 is fixedly connected to the output end of the motor 142. The connecting sleeve 144 is fixedly connected to the outer side of the adjusting screw 143, penetrating the surface of the transfer box 11. The rotating block 145 is fixedly connected to the outer side of the connecting sleeve 144. A rotating groove is formed on the inner side of the transfer box 11, and the outer side of the rotating block 145 is rotatably connected to this groove. The outer side of the adjusting screw 143 is threadedly connected to the inner wall of the connecting block 146. Oxygen is supplied through the oxygen cylinder 2. As oxygen is supplied to the transfer box 11, the motor 142 in the fixed housing 141 drives the adjusting screw 143 to rotate. The rotation of the adjusting screw 143 drives the connecting sleeve 144 to rotate. The connecting sleeve 144 rotates in the transfer box 11, and the connecting sleeve 144 drives the rotating block 145 to rotate. The rotating block 145 rotates in the rotating groove of the transfer box 11 to maintain the stability of the rotation of the adjusting screw 143. The square setting on the inner side of the transfer box 11 limits the piston plate 13, so that the piston plate 13 will not rotate. The adjusting screw 143 rotates in the connecting block 146. The connecting block 146 is fixed to the piston plate 13, so that the adjusting screw 143 drives the connecting block 146 to move upward. The connecting block 146 drives the piston plate 13 to move upward, which facilitates the control of the position of the piston plate 13, and thus facilitates the addition of oxygen and the mixing of oxygen with external air.

[0037] Working principle:

[0038] When in use, the device supplies oxygen through oxygen cylinder 2. Simultaneously, as the oxygen from cylinder 2 is fed into the transfer box 11, the motor 142 in the fixed housing 141 drives the adjusting screw 143 to rotate. The rotation of the adjusting screw 143 causes the connecting sleeve 144 to rotate. The connecting sleeve 144 rotates within the transfer box 11, driving the rotating block 145 to rotate. The rotating block 145 rotates within the rotating groove of the transfer box 11, maintaining the stability of the adjusting screw 143's rotation. The square setting inside the transfer box 11 limits the piston plate 13, allowing the piston to... The stopper plate 13 does not rotate. The adjusting screw 143 rotates in the connecting block 146, which is fixed to the piston plate 13. This causes the adjusting screw 143 to drive the connecting block 146 upward, which in turn drives the piston plate 13 upward. This allows the oxygen from the oxygen cylinder 2 to enter the transfer box 11 through the input pipe 121. When delivering oxygen, the solenoid valve 122 opens, and the oxygen enters the space below the piston plate 13 inside the transfer box 11. After the piston plate 13 rises to a certain height, the solenoid valve 122 closes. Then, the piston plate 13 continues to move upward, driving the mounting shell 151 upward. This upward movement of the piston plate 13 creates a negative pressure in the space below it within the transfer box 11. The upward pressure of the piston plate 13, combined with atmospheric pressure, causes external air to push the sealing block 155 downward, separating it from the segmented cover 152. Air enters the space below the piston plate 13. The final height of the piston plate 13's ascent is controlled according to the required oxygen concentration. After rising a certain distance, the piston plate 13 stops, and the spring 154 pulls the sealing block 155. This causes the sealing block 155 to slide on the slide rod 157. The sealing block 155 and the baffle 156 seal the segment cover 152 to prevent external air from entering the space below the piston plate 13. The slide rod 157 is supported by the bracket 158. The final standard for controlling the oxygen concentration is the height of the piston plate 13 when oxygen cylinder 2 supplies oxygen / the total height of the piston plate 13, which is the oxygen concentration below the piston plate 13 inside the transfer box 11 at this time. The breathing radar 4 is connected to the human body to detect the rise and fall of the human chest cavity, thereby determining the human body's inhalation and exhalation actions.

[0039] When a person inhales, the controller 5 controls the motor 142 on the gas transfer box 11 to reverse, forcing the gas mixture into the delivery pipe 161 via the piston plate 13. At this time, the electric telescopic tube 163 should operate, driving the switching piston 164 to align the switching hole of the switching piston 164 with the corresponding delivery pipe 161. The one-way valve 123 prevents the backflow of gas in the transfer box 11. Oxygen passes sequentially through the delivery pipe 161, the inlet of the switching piston 164, and the outlet pipe 165. The gas mixture is then output through the nasal cannula 3, completing the oxygen supply operation for a single inhalation of the patient. Simultaneously, another transfer box 1... The mixed gas is prepared in the first transfer box 11. When the patient exhales, the mixed gas in the other transfer box 11 is ready. The inner side of the transfer box 11, which has already consumed the mixed gas, also begins to prepare mixed gas. The electric telescopic tube 163 drives the switching piston 164 to slide in the piston block 162 to switch the input hole to align with the other delivery tube 161. When the patient inhales again, the mixed gas in the other transfer box 11 is output through the nasal cannula 3 and inhaled by the patient to achieve a constant concentration. The stop block 166 is used to limit the maximum position of the switching piston 164 to the right to prevent the switching piston 164 from blocking the output tube 165.

Claims

1. An adjustable oxygen concentration output device, characterized in that: The system includes a concentration control mechanism (1), an oxygen cylinder (2), a nasal cannula (3), a respiratory radar (4), and a controller (5). One end of the oxygen cylinder (2) is connected to the concentration control mechanism (1). The nasal cannula (3) is connected to the concentration control mechanism (1). The respiratory radar (4) and the controller (5) are installed on the concentration control mechanism (1). The concentration control mechanism (1) includes a transfer box (11), an input component (12), a piston plate (13), a drive component (14), a replenishment component (15), and a switching component (16). The input end of the nasal cannula (3) is connected to the switching component (16). Two transfer boxes (11) are connected to the switching component (16). The input component (12) is installed at the bottom of both transfer boxes (11). The piston plate (13) is slidably connected to the inside of the transfer box (11). The drive component (14) is installed inside the piston plate (13). The replenishment component (15) is installed inside the piston plate (13). The drive assembly (14) includes a fixed housing (141), a motor (142), an adjusting screw (143), a connecting sleeve (144), a rotating block (145), and a connecting block (146). A connecting groove is provided on the inner side of the piston plate (13), and the connecting block (146) is fixedly connected to the inner side of this groove. The fixed housing (141) is fixedly connected to the top of the transfer box (11), and the motor (142) is fixedly connected to the inner side of the top of the fixed housing (141). The output end is fixedly connected to the adjusting screw (143), and the outer side of the adjusting screw (143) is fixedly connected to the connecting sleeve (144). The connecting sleeve (144) penetrates the surface of the transfer box (11). The outer side of the connecting sleeve (144) is fixedly connected to the rotating block (145). The inner side of the transfer box (11) is provided with a rotating groove. The outer side of the rotating block (145) is rotatably connected to the rotating groove. The outer side of the adjusting screw (143) is threadedly connected to the inner side wall of the connecting block (146). The filling component (15) includes a mounting shell (151), a segmented cover (152), a connecting pipe (153), a spring (154), a sealing block (155), a baffle (156), a sliding rod (157), and a bracket (158). The mounting shell (151) is fixedly connected to the inner side of the piston plate (13). The mounting shell (151) penetrates the surface of the piston plate (13). The segmented cover (152) is fixedly connected to the top of the mounting shell (151). The connecting pipe (153) is fixedly connected to the top of the segmented cover (152). The inner side of the top of the segmented cover (152) is... The spring (154) is fixedly connected to the side, the closing block (155) is fixedly connected to the bottom end of the spring (154), the baffle (156) is fixedly connected to the bottom end of the closing block (155), the slide rod (157) is slidably connected to the inner side of the closing block (155), the slide rod (157) penetrates the surface of the closing block (155), the slide rod (157) penetrates the surface of the baffle (156), the bracket (158) is fixedly connected to the bottom end of the slide rod (157), and the left and right ends of the bracket (158) are fixedly connected to the inner wall of the mounting shell (151).

2. The oxygen concentration output adjustable device according to claim 1, characterized in that: The inner side of the transfer box (11) is square, and the outer side of the piston plate (13) is attached to the inner wall of the transfer box (11).

3. The oxygen concentration output adjustable device according to claim 2, characterized in that: The switching assembly (16) includes a delivery pipe (161), a piston block (162), an electric telescopic pipe (163), a switching piston (164), and an output pipe (165). The output pipe (165) is fixedly connected to the input end of the nasal cannula (3). The piston block (162) is fixedly connected to the outside of the output pipe (165). The switching piston (164) is slidably connected to the inside of the piston block (162). The electric telescopic pipe (163) is fixedly connected to the right end of the switching piston (164). The electric telescopic pipe (163) penetrates the surface of the piston block (162). The outside of the electric telescopic pipe (163) is fixedly connected to the piston block (162). The piston block (162) has two input holes arranged on the left and right sides at the top. The delivery pipe (161) is fixedly connected to the inside of the input holes. The switching piston (164) has a switching hole on the inside.

4. The oxygen concentration output adjustable device according to claim 3, characterized in that: The piston block (162) has a groove on its inner side, and the inner wall of the groove is square. The outer side of the switching piston (164) is slidably connected to the groove. The movement trajectory of the switching hole is straight, and the input hole is located below the movement trajectory of the switching hole.

5. The oxygen concentration output adjustable device according to claim 4, characterized in that: The switching assembly (16) also includes a stop (166), which is fixedly connected to the inner sidewall of the groove of the piston block (162), and the stop (166) is located on the top left side of the output tube (165).

6. The oxygen concentration output adjustable device according to claim 1, characterized in that: The input component (12) includes an input pipe (121), a solenoid valve (122), a check valve (123), and a pressure gauge (124). The bottom end of the transfer box (11) is fixedly connected to the input pipe (121), and the bottom end of the input pipe (121) is connected to the oxygen cylinder (2). The solenoid valve (122) is installed on the input pipe (121), the check valve (123) is installed on the input pipe (121), and the pressure gauge (124) is installed on the input pipe (121). The solenoid valve (122) is located below the check valve (123), and the check valve (123) is located below the pressure gauge (124).

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