Leg foot elevation pad

Abstract

This invention relates to the field of leg and foot elevation pad technology and discloses a leg and foot elevation pad, including a base plate and a support plate located above the base plate. The top surface of the support plate is recessed to form a leg support groove, and an inner cavity is formed inside the support plate. A sliding cabinet is slidably installed in the inner cavity along the length direction of the support plate. Side rods are movably and retractably provided at both ends of the sliding cabinet. The ends of the side rods are connected to the insertion rods through connecting rods. A floating side pressure plate is provided at the close ends of the two insertion rods. This leg and foot elevation pad, by setting a side pressure plate structure in the leg support groove that can be linked to changes in lateral edema of the lower leg, and connecting the displacement of the side pressure plate to a lifting adjuster, enables the device to automatically drive the support plate to rise based on changes in the degree of edema in the lower leg of patients with heart failure, thereby achieving adaptive elevation in response to changes in edema in patients with heart failure without the need for frequent manual adjustments by nursing staff.

Description

Technical Field

[0001] This invention relates to the field of elevation pad technology, specifically to leg and foot elevation pads. Background Technology

[0002] Patients with heart failure often experience progressive edema due to impaired cardiac pumping function and obstructed venous return, particularly in the calves and feet caused by fluid retention. In the clinical and home care of heart failure patients, elevating the lower limbs to promote venous and tissue fluid return is one of the most common measures to reduce lower limb edema.

[0003] Existing lower limb elevation devices are mostly fixed-height elevation pads. Although some products can be adjusted manually or electrically, they usually only achieve overall elevation and cannot adaptively adjust according to changes in the degree of edema in heart failure patients. In actual use, caregivers often need to rely on experience to repeatedly adjust the elevation height, which increases the nursing burden and makes it difficult to respond promptly and accurately to situations where edema gradually worsens or improves. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a leg and foot elevation pad, which has the advantage of automatically adjusting the elevation state according to changes in calf edema.

[0006] (II) Technical Solution

[0007] To achieve the above-mentioned objective of automatically adjusting the elevation state according to changes in calf edema, the present invention provides the following technical solution: a leg and foot elevation pad, including a base plate and a support plate located above the base plate. The top surface of the support plate is recessed to form a leg support groove. An inner cavity is formed inside the support plate. A sliding cabinet is slidably installed in the inner cavity along the length direction of the support plate. Side rods are movably and retractably provided at both ends of the sliding cabinet. The ends of the side rods are connected to the insertion rods through connecting rods. A floating side pressure plate is provided at the close ends of the two insertion rods.

[0008] It also includes a lifting adjuster, located between the base plate and the support plate. When the side pressure plate floats, the lifting adjuster drives the support plate to rise.

[0009] Furthermore, the side pressure plate is connected to the displacement block via a connecting column. The displacement block is movably disposed inside the insertion rod and forms a displacement groove, and is supported by a spring.

[0010] A force-sensitive sensor is also fixedly installed in the displacement groove. When the side pressure plate floats, the force-sensitive sensor can be triggered by the connecting column and the displacement block.

[0011] Furthermore, side grooves are provided on both sides of the inner cavity for the side rod to pass through and move.

[0012] Both sides of the support leg groove are provided with movable grooves for inserting and moving the insertion rod.

[0013] Furthermore, a threaded rod is rotatably installed inside the slide cabinet. Threaded rod one has two threads with opposite directions of rotation formed on the outer walls of both ends of threaded rod one. Nut one and nut two are screwed onto the outer walls of thread one and thread two, respectively. Two side rods are fixedly installed on the opposite sides of nut one and nut two, respectively.

[0014] Furthermore, the lifting adjuster includes a threaded rod, a pushing block, a pushed block, and a connecting plate;

[0015] A threaded rod two is rotatably mounted on the base plate. Threaded rod two has two opposite threads three and four on its outer walls. Pushing blocks are screwed onto both threads three and four. The opposite sides of the two pushing blocks have a sloping surface.

[0016] The two pushed blocks are connected by a connecting plate and are located between two inclined surfaces. The support plate is mounted on the connecting plate.

[0017] Furthermore, the second threaded rod is driven by a motor;

[0018] The output terminal of the force sensor is electrically connected to a controller, and the output terminal of the controller is electrically connected to the input terminal of the motor.

[0019] Furthermore, the middle part of the top surface of the connecting plate is rotatably connected to the support plate via a hinge seat;

[0020] Elastic pads are also laid and fixed on both sides of the top surface of the connecting plate.

[0021] Furthermore, the distal end of the tray is hinged to a footrest, which is movably supported by a positioning plate, and the positioning plate is fixedly installed on the base plate by a vertical plate.

[0022] When the support plate is raised, the footrest loses the support of the positioning plate.

[0023] (III) Beneficial Effects

[0024] Compared with the prior art, the present invention provides a leg and foot elevation pad, which has the following beneficial effects:

[0025] 1. This leg and foot elevation pad features a side pressure plate structure within the leg support groove that is linked to changes in lateral edema of the lower leg. The displacement of the side pressure plate is connected to a lifting adjuster, enabling the device to automatically drive the support plate to rise based on changes in the degree of edema in the lower leg of patients with heart failure. This allows for adaptive elevation in response to changes in edema in heart failure patients without the need for frequent manual adjustments by nursing staff, improving the timeliness and accuracy of elevation and reducing the workload of nursing staff.

[0026] 2. The leg and foot elevation pad has a hinged connection in the middle of the support plate and elastic pads on both sides, so that the support plate can adjust the angle around the hinge point during the elevation process. This adapts to the changes in the shape and force distribution of the lower leg of patients with heart failure and edema, avoids the local force concentration caused by rigid elevation, and improves comfort. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a front view of the overall structure of the present invention;

[0029] Figure 3 This is a cross-sectional view of the pallet portion of the present invention;

[0030] Figure 4 This is an enlarged schematic diagram of the sliding cabinet portion of the present invention;

[0031] Figure 5 This is a cross-sectional view of the sliding cabinet portion of the present invention.

[0032] In the diagram: 1. Base plate; 2. Support plate; 3. Leg groove; 4. Inner cavity; 5. Slide cabinet; 6. Side rod; 7. Connecting rod; 8. Insert rod; 9. Side groove; 10. Moving groove; 11. Side pressure plate; 12. Connecting column; 13. Displacement block; 14. Force sensor; 15. Threaded rod II; 16. Motor; 17. Pushing block; 18. Pushed block; 19. Connecting plate; 20. Guide sleeve; 21. Hinge seat; 22. Elastic pad; 23. Hinge; 24. Foot support; 25. Upright plate; 26. Positioning plate; 27. Vertical plate; 28. Piston; 29. ​​Gas chamber; 30. Airbag cushion. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1:

[0034] Please see Figures 1-5 This invention discloses a leg and foot elevation pad for patients with heart failure and edema, such as... Figure 1 As shown, its main body consists of a base plate 1 and a support plate 2 located above the base plate 1 that can be raised and lowered. A leg support groove 3 is formed in the top surface of the support plate 2. When in use, the patient's lower leg is placed in the leg support groove 3, so that the support plate 2 only supports the lower leg and foot area, without providing support or restriction to the thigh area.

[0035] In this embodiment, as Figure 2 and Figure 4 As shown, an inner cavity 4 is formed inside the tray 2. A sliding cabinet 5 is slidably installed in the inner cavity 4 along the length of the tray 2. Side rods 6 are movably telescopically provided at both ends of the sliding cabinet 5. The ends of the side rods 6 are connected to the insertion rods 8 through connecting rods 7. The ends of the two insertion rods 8 that are close to each other are provided with floating side pressure plates 11. A lifting adjuster is provided between the bottom plate 1 and the tray 2. When the two side pressure plates 11 float at the same time, the lifting adjuster can drive the tray 2 to rise.

[0036] Specifically, such as Figure 5 As shown, the side pressure plate 11 is connected to the displacement block 13 through the connecting column 12. The displacement block 13 is movably disposed inside the insert rod 8 and forms a displacement groove, and is supported by a spring. A force sensor 14 is also fixedly installed in the displacement groove. When the side pressure plate 11 floats, the force sensor 14 can be triggered through the connecting column 12 and the displacement block 13.

[0037] When in use, the patient's lower leg is placed in the leg support groove 3, and then the sliding cabinet 5 is slid back and forth to adjust its position. After adjusting to the appropriate position, the position of the two side pressure plates 11 is adjusted so that the two side pressure plates 11 are located on both sides of the lower leg but do not contact the lower leg. In this way, when the edema of the lower leg worsens and the outer diameter increases, the side pressure plates 11 can be pushed to float and move by radial changes.

[0038] like Figure 2 As shown, the inner cavity 4 has side grooves 9 on both sides for the side rod 6 to pass through and move, and the support leg groove 3 has moving grooves 10 on both sides for the insertion rod 8 to pass through and move, so as to facilitate the sliding cabinet 5 and the side pressure plate 11 to slide along the length direction of the support plate 2.

[0039] In this invention, a threaded rod is rotatably installed inside the sliding cabinet 5. Threads 1 and 2 with opposite directions of rotation are formed on the outer walls of both ends of the threaded rod. Nuts 1 and 2 are screwed onto the outer walls of threads 1 and 2 respectively. Two side rods 6 are fixedly installed on the opposite sides of nuts 1 and 2. Thus, by driving the threaded rod to rotate, the two side rods 6 can be moved closer or further apart through transmission, thereby adjusting the distance between the two side pressure plates 11 so that the two side pressure plates 11 are located on both sides of the lower leg but do not contact the lower leg, avoiding unilateral force or offset.

[0040] In this embodiment, as Figure 2 As shown, the lifting adjuster includes a threaded rod 15, a pusher block 17, a pusher block 18, and a connecting plate 19. The threaded rod 15 is rotatably mounted on the base plate 1. The outer walls of the threaded rod 15 have opposite threads 3 and 4 respectively. Pusher blocks 17 are screwed onto both threads 3 and 4. The opposite sides of the two pusher blocks 17 have slopes. The two pusher blocks 18 are connected by the connecting plate 19 and are located between the two slopes. The support plate 2 is mounted on the connecting plate 19. When the two pusher blocks 17 approach each other under the drive of the threaded rod 15, the wedge-shaped pushing action of the slopes can make the two pusher blocks 18 and the connecting plate 19 rise synchronously, thereby raising the support plate 2 and adjusting its height to achieve a slow and controllable lifting process.

[0041] In this invention, the threaded rod 15 is driven by the motor 16, and the output end of the force sensor 14 is electrically connected to the controller. The output end of the controller is electrically connected to the input end of the motor 16. In this way, when the force sensor 14 detects severe edema in the calf, it can automatically drive the motor 16 to run, realizing automatic lifting without manual control.

[0042] Therefore, in this embodiment, by setting a side pressure plate 11 structure in the leg support groove 3 that can be linked to the lateral edema changes of the lower leg, and connecting the displacement of the side pressure plate 11 to the lifting adjuster, the device can automatically drive the support plate 2 to rise based on the change in the degree of edema of the lower leg of the heart failure edema patient. Thus, adaptive raising in response to changes in heart failure edema can be achieved without the need for frequent manual adjustments by nursing staff, improving the timeliness and accuracy of raising, and reducing the workload of nursing staff.

[0043] In this invention, such as Figure 2As shown, the middle part of the top surface of the connecting plate 19 is rotatably connected to the support plate 2 through the hinge seat 21. In addition, elastic pads 22 are also laid and fixed on both sides of the top surface of the connecting plate 19. The middle part is hinged and the elastic pads 22 are set on both sides, so that the support plate 2 can make adaptive angle adjustment around the hinge point during the lifting process, thereby adapting to the changes in the shape of the lower leg and the force distribution of the heart failure edema patient, avoiding the local force concentration caused by rigid lifting, and improving comfort.

[0044] To further ensure the stability of the vertical movement of the connecting plate 19, in this embodiment, a guide rod is fixedly installed at the bottom of the connecting plate 19. The guide rod is movably inserted into the guide sleeve 20, which is fixedly installed on the base plate 1 to guide and limit the lifting movement of the connecting plate 19 and prevent deviation or shaking. Example 2:

[0045] Please see Figure 2 Based on Embodiment 1, in this embodiment, the far end of the support plate 2 is hinged to the foot support 24 via the hinge 23. The foot support 24 is movably supported by the positioning plate 26, which is fixedly installed on the base plate 1 via the upright plate 25. When the support plate 2 is raised under the action of the lifting adjuster, the foot support 24 will lose the support of the positioning plate 26, thereby tilting downward and causing the foot to gradually change from a supported state to a unloaded state.

[0046] Therefore, under normal support, the foot is supported by the foot support 24; when edema worsens and the support plate 2 is raised, the force on the foot can be automatically reduced, thereby promoting the transfer of the weight of the lower limb to the calf area, reducing the force on the sole and heel area, which helps to avoid the risk of foot discomfort or heel pressure sores in patients with heart failure and edema when in an elevated state. Example 3:

[0047] Please see Figure 3 Based on Embodiment 1 and / or Embodiment 2, in this embodiment, a vertical plate 27 is fixedly installed at the other end of the base plate 1. The top of the vertical plate 27 is inserted into the gas chamber 29 opened inside the support plate 2 and moves against a piston 28. The gas chamber 29 is connected to the airbag cushion 30 through a connecting pipe. The airbag cushion 30 is laid on the inner bottom wall of the support leg groove 3.

[0048] Under normal support conditions, the piston 28 is pushed up by the vertical plate 27, and the air in the gas chamber 29 enters the airbag cushion 30 through the connecting pipe, causing the airbag cushion 30 to inflate, thereby forming a flexible contact between the lower leg and the support plate 2, achieving a relatively soft support effect, and ensuring comfort during the initial placement of the leg and the edema fluctuation stage.

[0049] When the edema worsens and the support plate 2 rises, the piston 28 will disengage from the vertical plate 27. At this time, the air in the airbag cushion 30 will enter the gas chamber 29 through the connecting pipe, and the piston 28 will move down. As a result, the airbag cushion 30 will deflate, and the support leg groove 3 will change from a flexible support state to a relatively hard support state, forming a support stiffness that automatically changes with the lifting process, which is beneficial to maintaining the stability of the support after the lifting is in place.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leg and foot lifting pad, comprising a base plate (1) and a support plate (2) located above the base plate (1), wherein the top surface of the support plate (2) is recessed to form a leg support groove (3), characterized in that: An inner cavity (4) is formed inside the tray (2). A sliding cabinet (5) is slidably installed in the inner cavity (4) along the length direction of the tray (2). Side rods (6) are movably and telescopically provided at both ends of the sliding cabinet (5). The ends of the side rods (6) are connected to the insert rods (8) through connecting rods (7). A floating side pressure plate (11) is provided at the close ends of the two insert rods (8). It also includes a lifting adjuster, which is located between the base plate (1) and the support plate (2). When the side pressure plate (11) floats, the lifting adjuster drives the support plate (2) to rise.

2. The leg and foot elevation pad according to claim 1, characterized in that: The side pressure plate (11) is connected to the displacement block (13) through the connecting column (12). The displacement block (13) is movably disposed inside the insert rod (8) and forms a displacement groove, and is supported by a spring. A force sensor (14) is also fixedly installed in the displacement groove. When the side pressure plate (11) floats, the force sensor (14) can be triggered by the connecting column (12) and the displacement block (13).

3. The leg and foot elevation pad according to claim 1, characterized in that: Both sides of the inner cavity (4) are provided with side grooves (9) for the side rod (6) to pass through and move. Both sides of the support groove (3) are provided with moving grooves (10) for inserting and moving the insertion rod (8).

4. The leg and foot elevation pad according to claim 1, characterized in that: The sliding cabinet (5) is rotatably installed with a threaded rod 1. The outer walls of the two ends of the threaded rod 1 are respectively formed with threads 1 and 2 with opposite directions of rotation. Nut 1 and Nut 2 are respectively screwed onto the outer walls of threads 1 and 2. Two side rods (6) are respectively fixedly installed on the opposite side of nuts 1 and 2.

5. The leg and foot elevation pad according to claim 2, characterized in that: The lifting adjuster includes a threaded rod (15), a push block (17), a push block (18), and a connecting plate (19). A threaded rod two (15) is rotatably mounted on the base plate (1). Threaded rod two (15) has two opposite threads three and four on its outer wall. Pushing blocks (17) are screwed onto both threads three and four. The opposite sides of the two pushing blocks (17) have sloped surfaces. The two push blocks (18) are connected by a connecting plate (19) and located between two slopes, with the support plate (2) mounted on the connecting plate (19).

6. The leg and foot elevation pad according to claim 5, characterized in that: The threaded rod 2 (15) is driven by a motor (16); The output of the force sensor (14) is electrically connected to a controller, and the output of the controller is electrically connected to the input of the motor (16).

7. The leg and foot elevation pad according to claim 5, characterized in that: The middle part of the top surface of the connecting plate (19) is rotatably connected to the support plate (2) through the hinge seat (21); Elastic pads (22) are also laid and fixed on both sides of the top surface of the connecting plate (19).

8. The leg and foot elevation pad according to claim 1, characterized in that: The far end of the tray (2) is hinged to a footrest (24) via a hinge (23). The footrest (24) is movably supported by a positioning plate (26). The positioning plate (26) is fixedly installed on the base plate (1) via a vertical plate (25). When the support plate (2) is raised, the footrest (24) loses the support of the positioning plate (26).

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