Pressure sore prevention device

Abstract

The utility model relates to the technical field of medical instruments, and discloses a pressure sore prevention device which comprises a bottom plate, the lower surface of the bottom plate is fixedly connected with an electric push rod, the output end of the electric push rod is fixedly connected with a connecting block, and the upper surface of the connecting block is fixedly connected with a first rack. The upper surface of the left side of the first rack is fixedly connected with a first seat plate, the outer wall of the middle side of the first rack is in meshed connection with a gear, the outer wall of the gear is in meshed connection with a second rack, the upper surface of the right side of the second rack is fixedly connected with a second seat plate, and the upper surface of the bottom plate is fixedly connected with an air cushion. According to the air cushion, by starting the electric push rod, the electric push rod drives the connecting block to move horizontally, the connecting block drives the first rack to slide, and the first rack enables the first seat plate and the second seat plate to slide relatively, so that the effects of changing the contact area between the air cushion and a patient, improving the comfort level, keeping good pressure distribution and reducing pressure sores can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a pressure sore prevention device. Background Art

[0002] Pressure ulcers, also known as bedsores or pressure sores, are a type of injury to the local skin and underlying tissues caused by sustained pressure, shear force or friction. Pressure ulcers usually occur on bony protrusions such as the buttocks, back, heels, elbows, etc., especially when maintaining the same posture for a long time. Bedridden patients, wheelchair users or elderly people with limited mobility are the main high-risk groups, so patients need to use anti-pressure ulcer devices to prevent the occurrence of pressure ulcers.

[0003] When used, existing anti-pressure sore devices often use a large air cushion to contact the patient's skin. Although the air cushion can relieve the occurrence of pressure sores, when different patients use this type of device, the contact area between the air cushion and the patient cannot be changed, the comfort is not high, and pressure sores are more likely to occur after sitting for a long time. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides an anti-pressure sore device, which aims to improve the problem that the existing anti-pressure sore device cannot adjust the contact area between the air cushion and the patient and has low comfort.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The cam is fixedly connected to the bottom surface of the base plate, and the output end of the cam is fixedly connected to a connecting block. The upper surface of the connecting block is fixedly connected to a first rack. The lower surface of the first rack is slidably connected to the inner wall of the base plate. The left upper surface of the first rack is fixedly connected to the first seat plate. The lower surface of the first seat plate is slidably connected to the left upper surface of the base plate. The middle outer wall of the first rack is meshed with a gear. The outer wall of the gear is meshed with a second rack. The right upper surface of the second rack is fixedly connected to the second seat plate. The upper surface of the base plate is fixedly connected to an air cushion. The lower surface of the base plate is provided with a connecting assembly, and the connecting assembly is used to connect the base plate and the seat leg.

[0007] Preferably, the connecting assembly includes a lifting rod, the upper surface of the lifting rod is fixedly connected to the lower surface of the base plate, and the right outer wall of the lifting rod is fixedly connected to a fixed shaft.

[0008] Preferably, the outer wall of the lifting rod is slidably connected to the inner wall of the seat leg, the outer wall of the fixed shaft is provided with a connecting plate, and the upper inner wall of the connecting plate is fixedly connected to the rotating shaft.

[0009] Preferably, the left outer wall of the rotating shaft is rotatably connected to a fixing seat, and the lower surface of the fixing seat is fixedly connected to a first fixing plate.

[0010] Preferably, the left outer wall of the first fixing plate is fixedly connected to the right outer wall of the seat leg, and the lower surface of the first fixing plate is fixedly connected to the second fixing plate.

[0011] Preferably, a motor is fixedly connected to the upper surface of the second fixing plate, and a worm is fixedly connected to the output end of the motor.

[0012] Preferably, the outer wall of the worm is meshedly connected with a worm wheel, and the inner wall of the worm wheel is fixedly connected to the middle outer wall of the rotating shaft.

[0013] Preferably, the lower surface of the second seat plate is slidably connected to the right upper surface of the bottom plate, and the left outer wall of the second seat plate is arranged on the right outer wall of the first seat plate.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the present invention, by starting the electric push rod, the electric push rod drives the connecting block to move horizontally, the connecting block drives the first rack to slide, and the first rack causes the first seat plate and the second seat plate to slide relative to each other, thereby changing the contact area between the air cushion and the patient, improving comfort, maintaining good pressure distribution, and reducing the occurrence of pressure sores.

[0016] 2. In the present invention, by starting the motor, the output end of the motor drives the worm to rotate, the worm drives the worm wheel to rotate, and the worm wheel causes the base plate to move up and down, thereby reducing the friction and shear force generated by moving or adjusting the posture when sitting, and adapting to the patient's body shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional diagram of an anti-pressure sore device proposed by the present invention;

[0018] Figure 2 This is a cross-sectional view of the bottom plate of an anti-pressure sore device proposed in the present invention;

[0019] Figure 3 This is a schematic diagram of a fixing seat of an anti-pressure sore device proposed in the present invention;

[0020] Figure 4 This is a cross-sectional view of a lifting rod of the anti-pressure sore device proposed in the utility model.

[0021] Legend:

[0022] 1. Base plate; 2. Electric push rod; 3. Connecting block; 4. First rack; 5. First seat plate; 6. Gear; 7. Second rack; 8. Second seat plate; 9. Air cushion; 10. Lifting rod; 11. Fixed shaft; 12. Seat leg; 13. Connecting plate; 14. Rotating shaft; 15. Fixed seat; 16. First fixed plate; 17. Second fixed plate; 18. Motor; 19. Worm; 20. Worm wheel. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings of the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Reference Figure 1 and Figure 2 , the utility model provides an embodiment: an anti-pressure sore device, including a base plate 1, the lower surface of the base plate 1 is fixedly connected to an electric push rod 2, the output end of the electric push rod 2 is fixedly connected to a connecting block 3, the upper surface of the connecting block 3 is fixedly connected to a first rack 4, the lower surface of the first rack 4 is slidably connected to the inner wall of the base plate 1, the left upper surface of the first rack 4 is fixedly connected to a first seat plate 5, the lower surface of the first seat plate 5 is slidably connected to the left upper surface of the base plate 1, the middle outer wall of the first rack 4 is meshed with a gear 6, the outer wall of the gear 6 is meshed with a second rack 7, the right upper surface of the second rack 7 is fixedly connected to a second seat plate 8, the upper surface of the base plate 1 is fixedly connected to an air cushion 9, and the lower surface of the base plate 1 is provided with a connecting component, which is used to connect the base plate 1 and the seat leg 12;

[0025] Specifically, the electric push rod 2 is started, and the output end of the electric push rod 2 drives the connecting block 3 to move horizontally. The horizontal movement of the connecting block 3 drives the first rack 4 to slide. The sliding of the first rack 4 drives the first seat plate 5 to slide. The sliding of the first rack 4 drives the gear 6 to rotate. The rotation of the gear 6 drives the second rack 7 to slide in the opposite direction. The opposite sliding of the second rack 7 drives the second seat plate 8 to slide in the opposite direction, thereby completing the adjustment of the contact area between the air cushion 9 and the patient's skin.

[0026] Reference Figure 1 、 Figure 3 and Figure 4The connecting assembly includes a lifting rod 10, the upper surface of the lifting rod 10 is fixedly connected to the lower surface of the base plate 1, and the right outer wall of the lifting rod 10 is fixedly connected to a fixed shaft 11; the outer wall of the lifting rod 10 is slidably connected to the inner wall of the seat leg 12, and the outer wall of the fixed shaft 11 is provided with a connecting plate 13, and the upper inner wall of the connecting plate 13 is fixedly connected to a rotating shaft 14; the left outer wall of the rotating shaft 14 is rotatably connected to a fixed seat 15, and the lower surface of the fixed seat 15 is fixedly connected to a first fixed plate 16; the left outer wall of the first fixed plate 16 is fixedly connected to the right outer wall of the seat leg 12, and the lower surface of the first fixed plate 16 is fixedly connected to a second fixed plate 17; the upper surface of the second fixed plate 17 is fixedly connected to a motor 18, and the output end of the motor 18 is fixedly connected to a worm 19; the outer wall of the worm 19 is meshedly connected to a worm gear 20, and the inner wall of the worm gear 20 is fixedly connected to the middle outer wall of the rotating shaft 14;

[0027] Specifically, the motor 18 is started, and the output end of the motor 18 drives the worm 19 to rotate. The rotation of the worm 19 drives the worm wheel 20 to rotate. The rotation of the worm wheel 20 drives the rotating shaft 14 to rotate. The rotation of the rotating shaft 14 drives the connecting plate 13 to rotate. The rotation of the connecting plate 13 drives the fixed shaft 11 to rise and fall. The lifting of the fixed shaft 11 drives the lifting rod 10 to rise and fall. The lifting of the lifting rod 10 drives the base plate 1 to rise and fall, thereby completing the height adjustment of the base plate 1.

[0028] Reference Figure 1 and Figure 2 , the lower surface of the second seat plate 8 is slidably connected to the right upper surface of the bottom plate 1, and the left outer wall of the second seat plate 8 is arranged on the right outer wall of the first seat plate 5;

[0029] Specifically, the second seat plate 8 moves relative to the first seat plate 5 under the action of the electric push rod 2 to provide support for the patient's body.

[0030] Working principle: When using the device, when the patient sits on the device, the electric push rod 2 on the lower surface of the base plate 1 is started, and the output end of the electric push rod 2 drives the connecting block 3 to move horizontally. When the connecting block 3 moves horizontally, it drives the first rack 4 on the upper surface to slide. When the first rack 4 slides, it drives the first seat plate 5 on the upper surface to slide. When the first rack 4 slides, it drives the gear 6 on the outer wall to rotate. When the gear 6 rotates, it drives the second rack 7 on the outer wall to slide in the opposite direction. When the second rack 7 slides in the opposite direction, it drives the second seat plate 8 on the upper surface to slide in the opposite direction, thereby adjusting the contact area between the air cushion 9 and the patient's skin. The motor 18 on the upper surface of the second fixed plate 17 is started, and the output end of the motor 18 drives the worm 19 to rotate. When the worm 19 rotates, it drives the worm wheel 20 on the outer wall to rotate, and when the worm wheel 20 rotates, it drives the rotating shaft 14 on the inner wall to rotate, and when the rotating shaft 14 rotates, it drives the connecting plate 13 on the outer wall to rotate, and when the connecting plate 13 rotates, it drives the fixed shaft 11 of the outer wall to rise and fall, and when the fixed shaft 11 rises and falls, it drives the lifting rod 10 on the outer wall to rise and fall, and when the lifting rod 10 rises and falls, it drives the bottom plate 1 on the upper surface to rise and fall, thereby adjusting the height of the bottom plate 1. This can not only change the contact area between the air cushion 9 and the patient, improve comfort, maintain good pressure distribution, and reduce the occurrence of pressure sores, but also reduce the friction and shear force caused by moving or adjusting posture when sitting, and adapt to the patient's body shape.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pressure sore prevention device, comprising a base plate (1), characterized in that: The lower surface of the base plate (1) is fixedly connected to an electric push rod (2), the output end of the electric push rod (2) is fixedly connected to a connecting block (3), the upper surface of the connecting block (3) is fixedly connected to a first rack (4), the lower surface of the first rack (4) is slidably connected to the inner wall of the base plate (1), the left upper surface of the first rack (4) is fixedly connected to a first seat plate (5), the lower surface of the first seat plate (5) is slidably connected to the left upper surface of the base plate (1), the middle outer wall of the first rack (4) is meshed with a gear (6), the outer wall of the gear (6) is meshed with a second rack (7), the right upper surface of the second rack (7) is fixedly connected to a second seat plate (8), the upper surface of the base plate (1) is fixedly connected to an air cushion (9), and the lower surface of the base plate (1) is provided with a connecting assembly, which is used to connect the base plate (1) and the seat leg (12).

2. The pressure sore prevention device according to claim 1, characterized in that: The connecting assembly comprises a lifting rod (10), the upper surface of the lifting rod (10) is fixedly connected to the lower surface of the base plate (1), and the right outer wall of the lifting rod (10) is fixedly connected to a fixed shaft (11).

3. The pressure sore prevention device according to claim 2, characterized in that: The outer wall of the lifting rod (10) is slidably connected to the inner wall of the seat leg (12); the outer wall of the fixed shaft (11) is provided with a connecting plate (13); and the upper inner wall of the connecting plate (13) is fixedly connected to a rotating shaft (14).

4. The pressure sore prevention device according to claim 3, characterized in that: The left outer wall of the rotating shaft (14) is rotatably connected to a fixing seat (15), and the lower surface of the fixing seat (15) is fixedly connected to a first fixing plate (16).

5. The pressure sore prevention device according to claim 4, characterized in that: The left outer wall of the first fixing plate (16) is fixedly connected to the right outer wall of the seat leg (12), and the lower surface of the first fixing plate (16) is fixedly connected to the second fixing plate (17).

6. The pressure sore prevention device according to claim 5, characterized in that: A motor (18) is fixedly connected to the upper surface of the second fixing plate (17), and a worm (19) is fixedly connected to the output end of the motor (18).

7. The pressure sore prevention device according to claim 6, characterized in that: The outer wall of the worm (19) is meshedly connected to a worm wheel (20), and the inner wall of the worm wheel (20) is fixedly connected to the middle outer wall of the rotating shaft (14).

8. The pressure sore prevention device according to claim 1, characterized in that: The lower surface of the second seat plate (8) is slidably connected to the right upper surface of the bottom plate (1), and the left outer wall of the second seat plate (8) is arranged on the right outer wall of the first seat plate (5).

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