Leak-proof medical oxygen delivery device

By using an electric push rod and a retainer to lock the connection between the oxygen delivery tube and the humidification bottle, combined with elastic elements and a tension sensing component, the problems of loose oxygen delivery tube connections and debris residue are solved, achieving improvements in leak prevention, comfort, and cleanliness, and facilitating the storage of the oxygen delivery tube.

CN121003755BActive Publication Date: 2026-06-19BEIJING BOLONG EQUIP INSTALLATION CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING BOLONG EQUIP INSTALLATION CO LTD
Filing Date
2025-08-27
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

The connection between the oxygen delivery tube and the humidification bottle in existing medical oxygen infusion devices is not strong enough, making it easy to loosen and cause oxygen leakage. In addition, the oxygen delivery tube is prone to leaving debris and breeding bacteria, which affects the comfort of use.

Method used

An electric push rod and a retainer are used to lock the connection between the oxygen delivery tube and the humidification bottle. An elastic element and a tension sensor are used to detect the dragging force and automatically adjust the connection status. The tube is cleaned by a backflush tube, and the oxygen delivery tube can be stored and adjusted for comfort using a telescopic plate and a multi-stage telescopic rod.

Benefits of technology

It effectively prevents oxygen leakage, enhances connection strength, improves user comfort, prevents discomfort caused by dragging, ensures clean oxygen delivery tubing, and facilitates storage and organization.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to the field of oxygen infusion technology, and more particularly to a leak-proof medical oxygen infusion device, comprising a humidification bottle and a mounting block; the mounting block is fixedly connected to the oxygen outlet tube of the humidification bottle; it also includes an electric push rod and a retainer; the electric push rod is fixedly connected to the mounting block via a connector; the retainer is detachably connected to the insertion end of the oxygen infusion tube; when the insertion end of the oxygen infusion tube is inserted into the oxygen outlet tube, the retainer is inserted into a slot, and the retaining hole is located directly below the telescopic part of the electric push rod, locking the retainer in place by inserting the telescopic part of the electric push rod into the retaining hole. The medical oxygen infusion device of this invention, through the cooperation of the retainer and the electric push rod, locks the insertion end of the oxygen infusion tube to the oxygen outlet tube of the humidification bottle, effectively improving the connection strength between the two and preventing the oxygen infusion tube from loosening and breaking due to dragging, thereby preventing oxygen leakage.
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Description

Technical Field

[0001] This invention relates to the field of oxygen infusion technology, and more particularly to a leak-proof medical oxygen infusion device. Background Technology

[0002] In medical oxygen delivery scenarios, the oxygen delivery tubes and humidification bottles of existing medical oxygen inhalers are mostly connected by simple plugs or simple snap-fit ​​connections, which are not strong enough. When patients wear the oxygen delivery tube and move around, the dragging force can easily cause the connection to loosen or break, leading to oxygen leakage. This not only wastes oxygen and affects the treatment effect, but also poses a safety hazard.

[0003] Meanwhile, long-term use of oxygen delivery tubes can easily lead to the accumulation of debris and the growth of bacteria inside, affecting user comfort. Summary of the Invention

[0004] In order to overcome the shortcomings of existing medical oxygen infusion devices where the oxygen delivery tube and humidification bottle are mostly connected by simple plug-in or simple snap-fit ​​connections, resulting in insufficient strength, this invention provides a leak-proof medical oxygen infusion device.

[0005] A leak-proof medical oxygen infusion device includes a humidification bottle and a mounting block; the mounting block is fixedly connected to the oxygen outlet tube of the humidification bottle.

[0006] It also includes an electric push rod and a retainer; the electric push rod is fixed to the mounting block by a connector; the plug end of the oxygen delivery tube is detachably connected to the retainer; when the plug end of the oxygen delivery tube is inserted into the oxygen outlet tube, the retainer is inserted into the slot, and the retaining hole is located directly below the telescopic part of the electric push rod, and the retainer is locked by inserting the telescopic part of the electric push rod into the retaining hole.

[0007] More preferably, it also includes a telescopic plate, a mounting ring, an elastic element, and a clamp; the telescopic plate is fixedly connected to the rear side of the mounting block; each moving part of the telescopic plate is provided with an insertion block on its front side; the insertion block is adapted to the insertion port of the mounting ring; an elastic element is provided between two adjacent mounting rings; a clamp is installed on each mounting ring; by pulling the telescopic plate to extend or retract, the mounting ring is moved, and the elastic element is extended or retracted.

[0008] More preferably, the telescopic plate consists of multiple moving parts and sliding rods installed inside the moving parts; the rightmost moving part of the telescopic plate is fixedly connected to the mounting block, and a mounting plate is fixedly connected to the rightmost moving part, and the telescopic plate is installed on the wall through the mounting plate.

[0009] More preferably, the clamp consists of an inflatable air bladder and an air tube. The inflatable air bladder is installed inside the mounting ring, and the air tube passes through the mounting ring and is exposed outside. By inflating the air tube, the inflatable air bladder expands and clamps and fixes the oxygen delivery tube.

[0010] More preferably, the elastic element is a spring mesh.

[0011] More preferably, a tension sensing assembly is installed between the rightmost mounting ring and the retainer. The tension sensing assembly consists of an elastic rope and a tension sensor located in the middle of the elastic rope.

[0012] More preferably, it also includes a backflush pipe and a one-way valve; the left side of the oxygen outlet pipe is connected to the backflush pipe; and the middle of the oxygen outlet pipe is equipped with a one-way valve.

[0013] More preferably, the upper part of the backflush pipe is provided with a cover.

[0014] More preferably, it also includes a connecting seat, a multi-stage telescopic rod, and a hook; a connecting seat is fixedly connected to the bottom of the movable part on both sides of the telescopic plate; the connecting seat is rotatably connected to the multi-stage telescopic rod; and a hook is fixedly connected to each section of the multi-stage telescopic rod.

[0015] More preferably, the length of the left connector is greater than the length of the right connector, so that the oxygen delivery tube is stored in an S-shape.

[0016] The present invention has the following advantages:

[0017] The medical oxygen infusion device of this invention, through the cooperation of a retainer and an electric push rod, locks the insertion end of the oxygen infusion tube to the oxygen outlet tube of the humidification bottle, effectively improving the connection strength between the two and preventing the oxygen infusion tube from loosening and breaking due to dragging, thereby preventing oxygen leakage. When dealing with dragging of the oxygen infusion tube, under mild dragging, the elastic element (spring mesh) can be stretched, and the curled oxygen infusion tube between adjacent mounting rings can be straightened, thus adapting to the dragging action and preventing discomfort to the user caused by the oxygen infusion tube's inability to extend or retract. Under heavy dragging, the tension sensing component (composed of an elastic rope and a central tension sensor) detects that the tension has reached a threshold, and the telescopic part of the electric push rod moves upward to release the lock on the retainer, separating the oxygen infusion tube from the oxygen outlet tube, preventing serious discomfort or injury to the user. Simultaneously, the elastic element is a spring mesh, and the tension sensing component includes an elastic rope; after the insertion block separates from the insertion port, the portion enclosed by the mounting ring and the elastic element... The oxygen delivery tube can be freely twisted, rather than being fixed in a straight line, improving user comfort. The telescopic design of the telescopic plate facilitates the insertion of the oxygen delivery tube into the mounting ring and elastic element, and also allows the oxygen delivery tube to curl between adjacent mounting rings so that it can extend and retract with the elastic element during dragging, further improving comfort. In addition, the backflush pipe connected to the oxygen outlet tube can inject cleaning fluid to backflush the oxygen delivery tube, preventing residual debris and bacterial growth inside. The backflush pipe can also be connected to an air pump to dry the liquid inside the oxygen delivery tube. The one-way valve prevents cleaning fluid from entering the humidification bottle during backflush, ensuring the comfort of using the oxygen delivery tube. The connecting seats at the bottom of the moving parts on both sides of the telescopic plate, the multi-stage telescopic rod with rotating connection, and the hooks on the rod can store the oxygen delivery tube in an S-shape, preventing liquid accumulation due to misalignment. Combined with the backflush function of the backflush pipe, it further optimizes the maintenance effect of the oxygen delivery tube and facilitates the storage and organization of the oxygen delivery tube. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure disclosed in this invention;

[0019] Figure 2 Figure 1 The diagram shows the state where the telescopic plate is stretched.

[0020] Figure 3 for Figure 2 The state diagram shows that the multi-stage telescopic rod rotates to a vertical position and is stretched.

[0021] Figure 4 for Figure 1 Enlarged view of area A;

[0022] Figure 5 This is a diagram showing the state of inserting the oxygen delivery tube into the oxygen outlet tube as disclosed in this invention;

[0023] Figure 6 This is a diagram showing the state of the plug and socket being separated as disclosed in this invention.

[0024] The components in the attached diagram are labeled as follows: 1-Humidification bottle, 2-Mounting block, 3-Electric push rod, 4-Fixer, 11-Oxygen outlet pipe, 21-Slot, 41-Fixing hole, 5-Telescopic plate, 6-Mounting ring, 7-Elastic element, 8-Clamping device, 9-Tension sensor assembly, 51-Insertion block, 52-Mounting plate, 61-Insertion port, 101-Backflush pipe, 102-One-way valve, 103-Connecting seat, 104-Multi-stage telescopic rod, 105-Hook, 100-Oxygen delivery pipe. Detailed Implementation

[0025] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0026] Example 1

[0027] A leak-proof medical oxygen infusion device, such as Figures 1-6 As shown, it includes a humidification bottle 1 and a mounting block 2; oxygen is obtained by inserting the humidification bottle 1 into the oxygen outlet and the oxygen is humidified by the humidification bottle 1; the mounting block 2 is fixedly connected to the oxygen outlet pipe 11 of the humidification bottle 1.

[0028] It also includes an electric push rod 3 and a retainer 4; the electric push rod 3 is fixed to the mounting block 2 by a connector; the plug end of the oxygen delivery tube 100 is detachably connected to the retainer 4, which is composed of two halves spliced ​​together; when the plug end of the oxygen delivery tube 100 is inserted into the oxygen outlet tube 11, the retainer 4 is inserted into the slot 21, and the fixing hole 41 is located directly below the telescopic part of the electric push rod 3, and the retainer 4 is locked by inserting the telescopic part of the electric push rod 3 into the fixing hole 41.

[0029] It also includes a telescopic plate 5, a mounting ring 6, an elastic element 7, and a clamp 8; the telescopic plate 5 is fixedly connected to the rear side of the mounting block 2; each moving part of the telescopic plate 5 is provided with an insertion block 51 on the front side; the insertion block 51 is adapted to be inserted into the insertion port 61 of the mounting ring 6; an elastic element 7 is provided between two adjacent mounting rings 6; a clamp 8 is installed on each mounting ring 6; by pulling the telescopic plate 5 to extend or retract, the mounting ring 6 is moved, and the elastic element 7 is extended or retracted.

[0030] The telescopic plate 5 consists of multiple moving parts and sliding rods installed inside the moving parts; the rightmost moving part of the telescopic plate 5 is fixedly connected to the mounting block 2, and a mounting plate 52 is fixedly connected to the rightmost moving part. The telescopic plate 5 is installed on the wall through the mounting plate 52.

[0031] The clamp 8 consists of an inflatable airbag and an air tube. The inflatable airbag is installed inside the mounting ring 6, and the air tube passes through the mounting ring 6 and is exposed outside. The air tube is inflated by a needle or air pump, causing the inflatable airbag to expand and clamp and fix the oxygen delivery tube 100.

[0032] The elastic element 7 is set as a spring mesh. When initially not subjected to external force, the elastic element 7 exhibits the following behavior: Figure 1 The contraction state is shown.

[0033] A tension sensing component 9 is installed between the rightmost mounting ring 6 and the fixing device 4. The tension sensing component 9 consists of an elastic rope and a tension sensor located in the middle of the elastic rope.

[0034] When using this invention, the humidification bottle 1 is inserted into the oxygen inlet to obtain oxygen, and the mounting plate 52 is fixed to the wall at the same time. Figure 1 As shown, the telescopic plate 5 is in the retracted state, and the inflatable bladder of the clamp 8 is in the deflated state. The user (or medical personnel) should then insert the connector end of an oxygen delivery tube 100 through all the mounting rings 6 in an orderly manner, as shown. Figure 5 As shown, when the plug end is about to be inserted into the oxygen outlet pipe 11, the retainer 4 is fixed at the plug end. Then the plug end is inserted into the oxygen outlet pipe 11 and the retainer 4 is tightened. At the same time, the retainer 4 is inserted into the slot 21, and the fixing hole 41 is located directly below the telescopic part of the electric push rod 3. The telescopic part of the electric push rod 3 is controlled to move down and insert into the fixing hole 41. In this way, the retainer 4 is locked by inserting the telescopic part of the electric push rod 3 into the fixing hole 41, thereby ensuring the connection strength between the oxygen outlet pipe 11 and the oxygen delivery pipe 100 and preventing the oxygen delivery pipe 100 from being dragged during use, which would cause the oxygen outlet pipe 11 and the oxygen delivery pipe 100 to break apart and cause oxygen leakage.

[0035] Furthermore, considering the complex situations in which users drag the oxygen delivery tube 100 while wearing it, sometimes it may only be a slight tug (with little force), in which case it is necessary to maintain the connection strength between the oxygen outlet tube 11 and the oxygen delivery tube 100 to prevent disconnection. However, sometimes the user pulls the oxygen delivery tube 100 heavily (with great force), and if the connection strength between the oxygen outlet tube 11 and the oxygen delivery tube 100 is maintained, it will cause severe discomfort or even injury to the user. Therefore, it is necessary to disconnect the oxygen outlet tube 11 from the oxygen delivery tube 100. Based on this, the specific use of the present invention is as follows: Figure 1 As shown, after the oxygen delivery tube 100 passes through all the mounting rings 6, the user can pull the telescopic plate 5 to extend it. When the telescopic plate 5 extends, it drives the mounting rings 6 to move synchronously through the insert block 51 (the insert block 51 is inserted into the socket 61). Figure 2 As shown, at this time, the mounting ring 6 is moved to the left, and the elastic element 7 (spring net) is stretched. Then, air is injected into the air tube of the clamp 8 using a syringe or air pump, causing the inflatable airbag to expand and clamp the oxygen delivery tube 100. Afterwards, the user pushes the telescopic plate 5 to retract. Figure 1 In the state shown, the elastic element 7 contracts simultaneously. At this time, under the action of the clamp 8, the oxygen delivery tube 100 between adjacent mounting rings 6 will curl together (the curled state is not shown in the figure); then all mounting rings 6 are pulled out from the insert block 51; then, when the oxygen delivery tube 100 is slightly pulled, the elastic element 7 between the two mounting rings 6 will be stretched to adapt to the dragging of the oxygen delivery tube 100. Since a section of the oxygen delivery tube 100 will be curled between adjacent mounting rings 6, this section of the oxygen delivery tube 100 will also be straightened to adapt to the dragging of the oxygen delivery tube 100. In this way, the present invention can adapt to the slight dragging of the oxygen delivery tube 100 by stretching the elastic element 7 and straightening the curled oxygen delivery tube 100, avoiding the oxygen delivery tube 100 being unable to extend or retract, which would cause discomfort due to the dragging action; when the oxygen delivery tube 100 is heavily dragged, the elastic element 7 will first be stretched to buffer the drag, and then the dragging force will be applied to the rightmost mounting ring 6, as shown. Figure 1 , Figure 4 As shown, the tension sensing component 9 will be pulled at this time. When the value of the tension sensor reaches the threshold, the telescopic part of the control electric push rod 3 will move upward to cancel the locking of the retainer 4, so that the oxygen delivery tube 100 can be pulled out and separated from the oxygen outlet tube 11, avoiding continuous dragging resistance, which may cause serious discomfort or even injury to the user.

[0036] It should be noted that by setting the elastic element 7 as a spring net and the tension sensing component 9 as a combination of an elastic rope and a tension sensor located in the middle of the elastic rope, after the insertion block 51 separates from the insertion port 61, the oxygen delivery tube 100, which is covered by the mounting ring 6 and the elastic element 7, can also be freely twisted instead of being fixed in a straight line, which can improve the comfort of use. At the same time, through the telescopic setting of the telescopic plate 5, the oxygen delivery tube 100 can be easily inserted into the mounting ring 6 and the elastic element 7, and by utilizing the telescopic plate 5, the oxygen delivery tube 100 can be curled between adjacent mounting rings 6. When the oxygen delivery tube 100 is dragged, it can extend and retract together with the elastic element 7 to adapt, which can improve the comfort of use.

[0037] It also includes a backflush pipe 101 and a one-way valve 102; the left side of the oxygen outlet pipe 11 is connected to the backflush pipe 101; the middle of the oxygen outlet pipe 11 is provided with a one-way valve 102; and the upper part of the backflush pipe 101 is provided with a cover.

[0038] It also includes a connecting seat 103, a multi-stage telescopic rod 104 and a hook 105; a connecting seat 103 is fixedly connected to the bottom of the movable part on both sides of the telescopic plate 5; the connecting seat 103 is rotatably connected to the multi-stage telescopic rod 104; a hook 105 is fixedly connected to each section of the multi-stage telescopic rod 104.

[0039] The length of the left connector 103 is greater than the length of the right connector 103, so that the oxygen delivery tube 100 is stored in an S-shape.

[0040] Furthermore, while an oxygen delivery tube 100 can be used normally for 3-5 days, over time, some impurities will remain inside, causing odors or bacterial growth. To address this, after a period of use, the cap on the backflushing tube 101 can be unscrewed, and cleaning solution (e.g., water) can be injected into the backflushing tube 101 to backflush it. During this process, the one-way valve 102 prevents the cleaning solution from entering the humidification bottle 1. Furthermore, because the oxygen delivery tube 100 is long and has varying heights, liquid can easily accumulate inside. To address this, [further details are needed]. Figure 1 As shown, the user can reinsert the mounting ring 6 onto the insert block 51, and then stretch the telescopic plate 50. Figure 2 As shown in the diagram, rotate the two multi-stage telescopic rods 104 to a vertical position, and then stretch the multi-stage telescopic rods 104, as follows. Figure 3 As shown, the user then hangs the oxygen delivery tube 100 on the hook 105 in an orderly S-shape, keeping the oxygen delivery tube 100 straight. In this way, the long oxygen delivery tube 100 is stored in an S-shape by means of the multi-stage telescopic rod 104 and the hook 105. This S-shape can prevent the oxygen delivery tube 100 from being misaligned and accumulating liquid, thus preventing liquid from accumulating in the oxygen delivery tube 100 when backwashing it.

[0041] It should be noted that the backflush pipe 101 can also be connected to an air pump to blow air and dry the liquid inside the oxygen delivery pipe 100.

[0042] As can be seen from the above, the medical oxygen infusion device of the present invention, through the cooperation of the retainer 4 and the electric push rod 3, locks the insertion end of the oxygen infusion tube 100 to the oxygen outlet tube 11 of the humidification bottle 1, effectively improving the connection strength between the two and preventing the oxygen infusion tube 100 from loosening and breaking due to dragging, thereby preventing oxygen leakage; when dealing with the dragging of the oxygen infusion tube 100, under slight dragging, the elastic element 7 (spring mesh) can be stretched, and the oxygen infusion tube 100 that is curled between adjacent mounting rings 6 can be straightened, thereby adapting to the dragging action and preventing the oxygen infusion tube 100 from loosening and breaking. The inability to extend or retract the tube causes discomfort to the user. Under heavy pulling, the tension sensing component 9 (composed of an elastic rope and a central tension sensor) detects that the tension has reached a threshold. The telescopic part of the electric push rod 3 then moves upward to release the lock on the retainer 4, separating the oxygen delivery tube 100 from the oxygen outlet tube 11, preventing severe discomfort or injury to the user. Simultaneously, the elastic element 7 is a spring mesh, and the tension sensing component 9 contains an elastic rope. After the insertion block 51 separates from the insertion port 61, the portion of the oxygen delivery tube 100 enclosed by the installation ring 6 and the elastic element 7 can be extended. The flexible, twistable design, rather than a straight, fixed shape, enhances user comfort. The telescopic design of the telescopic plate 5 facilitates the insertion of the oxygen delivery tube 100 into the mounting ring 6 and the elastic element 7. It also allows the oxygen delivery tube 100 to curl between adjacent mounting rings 6, enabling it to extend and retract with the elastic element 7 during dragging, further improving comfort. Furthermore, the backflushing pipe 101 connected to the oxygen outlet tube 11 allows for the injection of cleaning fluid to backflush the oxygen delivery tube 100, preventing internal debris and bacterial growth. The backflushing pipe 101 can also be connected to an air pump to dry the tube. The one-way valve 102 prevents the cleaning solution from entering the humidification bottle 1 during backflushing, ensuring the comfort of using the oxygen delivery tube 100. The connecting seat 103 at the bottom of the moving part on both sides of the telescopic plate 5, the multi-stage telescopic rod 104 with rotatable connection, and the hook 105 on the rod can store the oxygen delivery tube 100 in an S-shape, avoiding the accumulation of liquid due to misalignment. Combined with the backflushing function of the backflushing pipe 101, the maintenance effect of the oxygen delivery tube 100 is further optimized, and the storage and organization of the oxygen delivery tube 100 is also convenient.

[0043] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A leak-proof medical oxygen infusion device, comprising a humidification bottle (1) and a mounting block (2); the mounting block (2) is fixedly connected to the oxygen outlet pipe (11) of the humidification bottle (1). Its features are: It also includes an electric push rod (3) and a retainer (4); the electric push rod (3) is fixed to the mounting block (2) by a connector; the plug end of the oxygen delivery tube (100) is detachably connected to the retainer (4); when the plug end of the oxygen delivery tube (100) is inserted into the oxygen outlet tube (11), the retainer (4) is inserted into the slot (21), and the retaining hole (41) is located directly below the telescopic part of the electric push rod (3), and the retainer (4) is locked by inserting the telescopic part of the electric push rod (3) into the retaining hole (41); It also includes a telescopic plate (5), a mounting ring (6), an elastic element (7), and a clamp (8); the telescopic plate (5) is fixed to the rear side of the mounting block (2); each moving part of the telescopic plate (5) is provided with a plug (51) on the front side; the plug (51) is adapted to be inserted into the socket (61) of the mounting ring (6); an elastic element (7) is provided between two adjacent mounting rings (6); a clamp (8) is installed on each mounting ring (6); by pulling the telescopic plate (5) to extend and retract, the mounting ring (6) is moved, and the elastic element (7) is extended and retracted; The clamp (8) consists of an inflatable airbag and an air tube. The inflatable airbag is installed inside the mounting ring (6), and the air tube passes through the mounting ring (6) and is exposed outside. By inflating the air tube, the inflatable airbag expands to clamp and fix the oxygen delivery tube (100). A tension sensing assembly (9) is installed between the rightmost mounting ring (6) and the fixing device (4). The tension sensing assembly (9) consists of an elastic rope and a tension sensor located in the middle of the elastic rope. The oxygen delivery tube (100) passes through all the mounting rings (6); When the user gently pulls the oxygen delivery tube (100), the elastic element (7) stretches and straightens the oxygen delivery tube (100) to accommodate the gentle pull; when the oxygen delivery tube (100) is pulled heavily, the tension sensing component (9) will be pulled. When the value of the tension sensing component (9) reaches the threshold, the telescopic part of the electric push rod (3) is moved upward to cancel the locking of the retainer (4) and allow the oxygen delivery tube (100) to be pulled out and separated from the oxygen outlet tube (11).

2. The leak-proof medical oxygen infusion device according to claim 1, characterized in that: The telescopic plate (5) consists of multiple moving parts and sliding rods installed inside the moving parts; the rightmost moving part of the telescopic plate (5) is fixedly connected to the mounting block (2), and a mounting plate (52) is fixedly connected to the rightmost moving part. The telescopic plate (5) is installed on the wall through the mounting plate (52).

3. A leak-proof medical oxygen infusion device according to claim 1, characterized in that: The elastic element (7) is set as a spring mesh.

4. A leak-proof medical oxygen infusion device according to claim 1, characterized in that: It also includes a backflush pipe (101) and a check valve (102); the left side of the oxygen outlet pipe (11) is connected to the backflush pipe (101); and a check valve (102) is provided in the middle of the oxygen outlet pipe (11).

5. A leak-proof medical oxygen infusion device according to claim 4, characterized in that: A cover is provided on the upper part of the backflush tube (101).

6. A leak-proof medical oxygen infusion device according to claim 4, characterized in that: It also includes a connecting seat (103), a multi-stage telescopic rod (104) and a hook (105); a connecting seat (103) is fixedly connected to the bottom of the movable part on both sides of the telescopic plate (5); the connecting seat (103) is rotatably connected to the multi-stage telescopic rod (104); a hook (105) is fixedly connected to each section of the multi-stage telescopic rod (104).

7. A leak-proof medical oxygen infusion device according to claim 6, characterized in that: The length of the left connector (103) is greater than the length of the right connector (103), so that the oxygen delivery tube (100) is stored in an S-shape.