A portable medical oxygen concentrator

Abstract

This invention belongs to the field of medical device technology, specifically relating to a portable medical oxygen concentrator. It includes a main body with several rollers mounted on its lower end. A support base is fixedly mounted on the rear side of the lower end of the main body, and a first handle is fixedly mounted on the front side of the upper part of the main body. A support frame is hinged to the support base, and the support frame includes a rotating sleeve. A support groove is axially formed on the outer wall of the rotating sleeve. A support plate is also hinged to the support base to prevent clockwise rotation of the support frame. An elastic mechanism is installed between the support base and the support plate to drive the upper end of the support plate to rotate towards the rotating sleeve. The front end of the support frame is located in front of the main body. When in a fixed position, the support base and support frame are in contact with the ground. The lowest point of the rollers is located above the lower end of the support base, and the upper end of the support plate is engaged in the support groove. Its purpose is to solve the problem of small contact area caused by structural defects in existing oxygen concentrators, which easily leads to accidental movement during use.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a portable medical oxygen concentrator. Background Technology

[0002] Medical oxygen concentrators are a new type of equipment that extracts oxygen from the air based on pressure swing adsorption (PSA) technology. They utilize molecular sieves to physically adsorb and desorb nitrogen from the air when pressurized, and the remaining unabsorbed oxygen is collected and purified to become high-purity oxygen.

[0003] Oxygen concentrators are expensive, and some medical facilities are not fully equipped with them. Especially when there are many patients, oxygen concentrators are used frequently and need to be moved frequently. However, moving oxygen concentrators is difficult, and they need to be fixed and supported after being moved before they can be used safely.

[0004] To accommodate movement and fixation functions, most existing oxygen concentrators use casters with foot brakes. The casters are used to move the oxygen concentrator, and after movement, the foot brakes on the casters are used to fix them in place, thus providing fixed support for the oxygen concentrator.

[0005] In practical use, although the casters with foot brakes can secure the oxygen concentrator, the contact area between the oxygen concentrator and the ground is only the point where the casters contact the ground, which is relatively small. This makes it easy for the oxygen concentrator to move unexpectedly during use. Summary of the Invention

[0006] The purpose of this invention is to provide a portable medical oxygen concentrator to solve the problem of small contact area caused by structural defects in existing oxygen concentrators, which makes them prone to accidental movement during use.

[0007] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows:

[0008] A portable medical oxygen concentrator includes a main body, on the lower end face of which is mounted a plurality of rollers.

[0009] A support base is fixedly installed on the rear side of the lower end of the main body, and a first handle is fixedly installed on the front side of the upper part of the main body. A support frame is hinged to the support base. The support frame includes a rotating sleeve. A support groove is axially formed on the outer wall of the rotating sleeve. A first hinge shaft passes through the rotating sleeve. The support frame is hinged to the support base through the first hinge shaft.

[0010] The support base is also hinged with a support plate that can prevent the support frame from rotating clockwise. An elastic mechanism is installed between the support base and the support plate to drive the upper end of the support plate to rotate toward the rotating sleeve.

[0011] When in motion, the rollers are in contact with the ground, the lowest point of the support base is above the lowest point of the rollers, and the front end of the support frame is located in front of the main body.

[0012] When in a fixed position, the support base and support frame are in contact with the ground, the lowest point of the roller is located above the lower end face of the support base, and the upper end of the support plate is engaged in the support groove.

[0013] Furthermore, the rollers closer to the support base are directional rollers, while the rollers farther from the support base are omnidirectional rollers. This structural design, through the cooperation of the directional rollers and the omnidirectional rollers, ensures the oxygen concentrator's flexibility in movement and provides a certain degree of directional movement capability. The directional rollers are also more advantageous as fulcrums for rotating the oxygen concentrator, making it highly practical.

[0014] Furthermore, when the rollers support the oxygen concentrator, the lower end face of the support base is inclined downwards from back to front. This structural design, through the inclined setting of the lower end face of the support base, ensures that the lower end face of the support base is completely in contact with the ground when the oxygen concentrator is supported by the support base and support frame, increasing the contact area between the support base and the ground, making the oxygen concentrator more stable and practical.

[0015] Furthermore, the support plate is located behind the support frame, and a pedal is fixedly installed on the lower end of the support plate away from the support frame. This structural design, by defining the position of the support plate and setting the pedal, makes it easier to use the oxygen concentrator when changing it from a fixed position to a mobile position. Simply stepping on the pedal overcomes the prestress of the elastic mechanism, causing the support plate to rotate counterclockwise, which allows the upper end of the support plate to disengage from the support groove.

[0016] Further specifying, a second hinge shaft is horizontally mounted at the lower end of the support plate, and the elastic mechanism is a torsion spring. The torsion spring is sleeved on the second hinge shaft, and its two ends are respectively connected to the support plate and the support base. This structural design, using the torsion spring as the elastic mechanism to drive the upper end of the support plate to rotate towards the rotating sleeve, is simple in structure, easy to install, and highly practical.

[0017] Furthermore, the upper surface of the support plate is a strip-shaped arc surface, and the central axis of the strip-shaped arc surface coincides with the central axis of the second hinge shaft. This structural design allows for smoother disengagement of the upper end of the support plate from the support groove when the pedal is stepped on, making it more practical.

[0018] Furthermore, the rollers are divided into left and right groups, and the support frame is located below the main body and between the two groups of rollers. This structural design, by limiting the position of the support frame, ensures that it is located below the main body and between the two groups of rollers, thus avoiding the support frame occupying too much external space, reducing the overall footprint of the oxygen concentrator, and making it highly practical.

[0019] Furthermore, an elastic pulling mechanism is installed between the lower end face of the main body and the front part of the support frame. This structural design, through the elastic pulling mechanism pulling the front end of the support frame, allows the front end of the support frame to move upward under the action of the elastic pulling mechanism when the oxygen concentrator is in a moving state, thereby avoiding the problem of the front end of the support frame contacting the ground and causing inconvenience in movement.

[0020] Furthermore, the support frame is U-shaped. This structural design, by setting the support frame in a U-shape, increases the contact area between the support frame and the ground when supporting the oxygen concentrator via the support base and the support frame, and also increases the structural strength of the support frame itself. At the same time, it also makes it easier for the user to step on the front end of the support frame, making it highly practical.

[0021] Furthermore, a second handle is fixedly installed on the rear side of the upper part of the main body. This structural design allows the oxygen concentrator to be moved from a fixed position to a mobile position by first grasping the second handle and then stepping on the pedal to disengage the upper end of the support plate from the support groove. Then, the oxygen concentrator can be slowly moved forward. This avoids the problem of the front end of the oxygen concentrator falling directly downwards after the support plate disengages from the rotating sleeve, which could damage the rollers. This design is highly practical.

[0022] The invention employing the above technical solution has the following advantages:

[0023] 1. When in a fixed position, the oxygen concentrator is supported by the support base and support frame in contact with the ground. The large contact area between the support base and support frame and the ground makes the placement more stable and avoids the problem of accidental movement during use due to a small contact area with the ground.

[0024] 2. The device can be easily switched from a mobile state to a fixed position by stepping on the support frame and pulling the first handle.

[0025] 3. By tilting the lower end of the support base, the lower end of the support base is in complete contact with the ground when the oxygen concentrator is supported by the support base and support frame. This increases the contact area between the support base and the ground, making the oxygen concentrator more stable and practical.

[0026] 4. By limiting the position of the support plate and setting the pedal, when changing the oxygen concentrator from a fixed position to a mobile position, simply stepping on the pedal overcomes the prestress of the elastic mechanism, causing the support plate to rotate counterclockwise, which allows the upper end of the support plate to disengage from the support groove, making it more convenient to use.

[0027] 5. By pulling the front end of the support frame through the elastic pulling mechanism, the front end of the support frame moves upward under the action of the elastic pulling mechanism when the oxygen concentrator is in a moving state, thereby avoiding the problem of the front end of the support frame contacting the ground and causing inconvenience in moving.

[0028] 6. By setting the support frame in a U-shape, the contact area between the support frame and the ground can be increased when the oxygen concentrator is supported by the support base and the support frame. This also increases the structural strength of the support frame itself. At the same time, it makes it easier for users to step on the front end of the support frame, making it highly practical. Attached Figure Description

[0029] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0030] Figure 1 This is a schematic diagram of the structure of a portable medical oxygen concentrator in a mobile state according to an embodiment of the present invention;

[0031] Figure 2 This is a cross-sectional view of a portable medical oxygen concentrator in a mobile state according to an embodiment of the present invention;

[0032] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0033] Figure 4 This is a schematic diagram of the support frame portion in an embodiment of a portable medical oxygen concentrator of the present invention;

[0034] Figure 5 This is a schematic diagram of the structure of a portable medical oxygen concentrator in a fixed placement state according to an embodiment of the present invention;

[0035] Figure 6 This is a cross-sectional view of a portable medical oxygen concentrator in a fixed placement state according to an embodiment of the present invention;

[0036] Figure 7 for Figure 6 Enlarged structural diagram at point B;

[0037] The symbols for the main components are explained below:

[0038] Main body 1, rollers 10, first handle 11, second handle 12

[0039] Support 2

[0040] Support frame 3, first hinge shaft 30, rotating sleeve 31, support groove 310, elastic pulling mechanism 32

[0041] Support plate 4, second hinge shaft 40, pedal 41. Detailed Implementation

[0042] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are referred to by the same reference numerals in the drawings or description. Implementations not shown or described in the drawings are forms known to those skilled in the art. In addition, directional terms mentioned in the embodiments, such as "up," "down," "top," "bottom," "left," "right," "front," and "back," are only for reference to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0043] like Figures 1 to 7 As shown, a portable medical oxygen concentrator of the present invention includes a main body 1, and a plurality of rollers 10 are mounted on the lower end face of the main body 1.

[0044] A support base 2 is fixedly installed on the rear side of the lower end of the main body 1, and a first handle 11 is fixedly installed on the front side of the upper part of the main body 1. A support frame 3 is hinged to the support base 2. The support frame 3 includes a rotating sleeve 31. A support groove 310 is axially opened on the outer wall of the rotating sleeve 31. A first hinge shaft 30 passes through the rotating sleeve 31. The support frame 3 is hinged to the support base 2 through the first hinge shaft 30.

[0045] A support plate 4 is also hinged to the support base 2 to prevent the support frame 3 from rotating clockwise. An elastic mechanism is installed between the support base 2 and the support plate 4 to drive the upper end of the support plate 4 to rotate toward the rotating sleeve 31.

[0046] When in motion, the roller 10 is in contact with the ground, the lowest point of the support base 2 is above the lowest point of the roller 10, and the front end of the support frame 3 is in front of the main body 1.

[0047] When in a fixed position, the support base 2 and the support frame 3 are in contact with the ground, the lowest point of the roller 10 is located above the lower end face of the support base 2, and the upper end of the support plate 4 is locked in the support groove 310.

[0048] Preferably, the rollers 10 closer to the support base 2 are directional rollers, and the rollers 10 farther from the support base 2 are omnidirectional rollers. Through the cooperation of the directional rollers and the omnidirectional rollers, while ensuring the flexibility of the oxygen concentrator's movement and possessing a certain degree of directional movement capability, the directional rollers are more advantageous as fulcrums for rotating the oxygen concentrator, making them more practical.

[0049] Preferably, when the roller 10 supports the oxygen concentrator, the lower end face of the support base 2 is inclined downwards from back to front. This inclined arrangement of the lower end face of the support base 2 ensures that when the oxygen concentrator is supported by the support base 2 and the support frame 3, the lower end face of the support base 2 is in complete contact with the ground, increasing the contact area between the support base 2 and the ground. This makes the oxygen concentrator more stable and practical.

[0050] Preferably, the support plate 4 is located behind the support frame 3, and a pedal 41 is fixedly provided on the lower end of the support plate 4 away from the support frame 3. By limiting the position of the support plate 4 and setting the pedal 41, when the oxygen concentrator is changed from a fixed position to a mobile position, simply stepping on the pedal 41 overcomes the prestress of the elastic mechanism, causing the support plate 4 to rotate counterclockwise, which allows the upper end of the support plate 4 to disengage from the support groove 310, making it more convenient to use.

[0051] Preferably, a second hinge shaft 40 is horizontally mounted on the lower end of the support plate 4. The elastic mechanism is a torsion spring, which is sleeved on the second hinge shaft 40, and its two ends are connected to the support plate 4 and the support base 2, respectively. Using the torsion spring as the elastic mechanism to drive the upper end of the support plate 4 to rotate toward the rotating sleeve 31, the structure is simple, easy to install, and highly practical.

[0052] Preferably, the upper surface of the support plate 4 is a strip-shaped arc surface, and the central axis of the strip-shaped arc surface coincides with the central axis of the second hinge shaft 40. This makes it smoother when the upper end of the support plate 4 disengages from the support groove 310 by stepping on the pedal 41, thus improving its practicality.

[0053] Preferably, the rollers 10 are divided into two groups, left and right, and the support frame 3 is located below the main body 1 and between the two groups of rollers 10. By limiting the position of the support frame 3, so that the support frame 3 is located below the main body 1 and between the two groups of rollers 10, the support frame 3 can avoid occupying too much external space, reduce the overall footprint of the oxygen concentrator, and has strong practicality.

[0054] Preferably, an elastic pulling mechanism 32 is installed between the lower end face of the main body 1 and the front part of the support frame 3. By pulling the front end of the support frame 3 through the elastic pulling mechanism 32, the front end of the support frame 3 moves upward under the action of the elastic pulling mechanism 32 when the oxygen generator is in a moving state, thereby avoiding the problem of inconvenience caused by the front end of the support frame 3 contacting the ground.

[0055] Preferably, the elastic pulling mechanism 32 is an elastic rope or a tension spring. Using an elastic rope or tension spring as the elastic pulling mechanism 32 to move the front end of the support frame 3 upwards results in a simple structure, convenient installation, and strong practicality.

[0056] Preferably, the support frame 3 is U-shaped. By setting the support frame 3 in a U-shape, when the oxygen concentrator is supported by the support base 2 and the support frame 3, the contact area between the support frame 3 and the ground can be increased, the structural strength of the support frame 3 itself can be increased, and at the same time, it is also convenient for the user to step on the front end of the support frame 3, which makes it more practical.

[0057] Preferably, a second handle 12 is fixedly installed on the rear side of the upper part of the main body 1. When changing the oxygen concentrator from a fixed position to a mobile position, you can first grab the second handle 12 and then step on the pedal 41 to disengage the upper end of the support plate 4 from the support groove 310. Then, slowly move the oxygen concentrator forward. This can avoid the problem of the front end of the oxygen concentrator falling directly downwards after the support plate 4 disengages from the rotating sleeve 31, which would damage the roller 10. This design is highly practical.

[0058] In this embodiment, when in a moving state, such as Figures 1-3 As shown, the roller 10 is in contact with the ground, forming a support for the oxygen concentrator. The lowest point of the support base 2 is located above the lowest point of the roller 10. The front end of the support frame 3 is lifted off the ground by the elastic pulling mechanism 32 and rests against the lower part of the main body 1. The upper end of the support plate 4 is pressed against the side wall of the rotating sleeve 31 by the elastic mechanism and is located outside the support groove 310. At this time, the oxygen concentrator can be moved by the roller 10.

[0059] When the oxygen concentrator needs to be fixed in place after being moved, the user stands in front of the oxygen concentrator, grasps the first handle 11, and steps on the front end of the support frame 3 with their foot to overcome the prestress of the elastic pulling mechanism 32, so that the front end of the support frame 3 contacts the ground. Then, the user exerts upward force through the first handle 11, using the roller 10 near the support base 2 as a fulcrum, to make the oxygen concentrator rotate counterclockwise until the support base 2 contacts the ground. The user continues to exert upward force until the inclined lower end of the support base 2 is completely in contact with the ground. At this point, the support plate 4, under the action of the elastic mechanism, rotates counterclockwise along the second hinge axis 40, causing the upper end of the support plate 4 to engage with the support groove 310. Then, the user releases the first handle 11, and the lower end of the support base 2 and the lower end of the support frame 3 are completely in contact with the ground. The oxygen concentrator is now supported by the support base 2 and the support frame 3, completing the fixed placement of the oxygen concentrator (e.g., Figures 5-7 (as shown);

[0060] When the oxygen concentrator needs to be moved, the user stands behind the oxygen concentrator, grasps the second handle 12, and steps on the pedal 41 to overcome the prestress of the elastic mechanism, causing the support plate 4 to rotate counterclockwise. This allows the upper end of the support plate 4 to disengage from the support groove 310. At this time, the front end of the support frame 3 rotates clockwise along the first hinge shaft 30 under the action of the elastic pulling mechanism 32, completing the folding of the support frame 3. Then, the oxygen concentrator is slowly moved forward and released, using the support seat 2 as a fulcrum, causing the oxygen concentrator to rotate counterclockwise until the rollers 10 near the support seat 2 re-contact the ground. The user continues to release until all rollers 10 are in contact with the ground, and then releases the pedal 41. At this point, the oxygen concentrator can be moved again by using the rollers 10.

[0061] The above provides a detailed description of a portable medical oxygen concentrator provided by the present invention. The specific embodiments described are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A portable medical oxygen generator, comprising a main body (1), and a plurality of rollers (10) are installed on the lower end surface of the main body (1). It is characterized in that: A support base (2) is fixedly installed on the rear side of the lower end of the main body (1), a first handle (11) is fixedly installed on the front side of the upper part of the main body (1), a support frame (3) is hinged on the support base (2), the support frame (3) includes a rotating sleeve (31), a support groove (310) is axially formed on the outer wall of the rotating sleeve (31), a first hinge shaft (30) passes through the rotating sleeve (31), and the support frame (3) is hinged to the support base (2) through the first hinge shaft (30). A support plate (4) that can prevent the support frame (3) from rotating clockwise is also hinged on the support base (2), and an elastic mechanism for driving the upper end of the support plate (4) to rotate towards the rotating sleeve (31) is installed between the support base (2) and the support plate (4). When in a moving state, the rollers (10) are in contact with the ground, the lowest point of the support base (2) is above the lowest point of the rollers (10), and the front end of the support frame (3) is in front of the main body (1). When in a fixed placement state, the support base (2) and the support frame (3) are in contact with the ground, the lowest point of the rollers (10) is above the lower end surface of the support base (2), and the upper end of the support plate (4) is clamped in the support groove (310).

2. A portable medical oxygen concentrator according to claim 1, characterized in that: The roller (10) close to the support base (2) is a directional wheel, and the roller (10) far from the support base (2) is a universal wheel.

3. A portable medical oxygen concentrator according to claim 1, characterized in that: When the rollers (10) support the oxygen generator, the lower end surface of the support base (2) slopes downward from back to front.

4. A portable medical oxygen concentrator according to claim 1, characterized in that: The support plate (4) is located behind the support frame (3), and a pedal (41) is fixedly provided on the side of the lower end of the support plate (4) far from the support frame (3).

5. A portable medical oxygen concentrator according to claim 4, characterized in that: A second hinge shaft (40) is horizontally installed at the lower end of the support plate (4), the elastic mechanism is a torsion spring, the torsion spring is sleeved on the second hinge shaft (40), and the support feet at both ends are respectively connected to the support plate (4) and the support base (2).

6. A portable medical oxygen concentrator according to claim 4, characterized in that: The upper end surface of the support plate (4) is a strip-shaped arc surface, and the central axis of the strip-shaped arc surface coincides with the central axis of the second hinge shaft (40).

7. A portable medical oxygen concentrator according to claim 1, characterized in that: The plurality of rollers (10) are divided into left and right groups, and the support frame (3) is located below the main body (1) and between the left and right groups of rollers (10).

8. A portable medical oxygen concentrator according to claim 7, characterized in that: An elastic pulling mechanism (32) is installed between the lower end surface of the main body (1) and the front part of the support frame (3).

9. A portable medical oxygen concentrator according to claim 1, characterized in that: The support frame (3) is in a shape of a square.

10. A portable medical oxygen concentrator according to claim 4, characterized in that: A second handle (12) is fixedly installed on the rear side of the upper part of the main body (1).

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