Calf raising device

Abstract

The present application relates to the technical field of medical device of calf support, provide a kind of calf pad height device, solve the technical problems that traditional calf pad height device height cannot be adjusted and structure stability is poor.A kind of calf pad height device, characterized by: including a group of parallel, interval arrangement support plate, adjacent support plate is guided along vertical direction by guiding component and is provided with inflatable unit between the two, support plate is equipped with air cock, air cock is inserted into the inflatable unit of upper and lower two sides, the outer sleeve of upper air cock and the outer sleeve of lower air cock sliding plug-in cooperation, the core rod of air cock is hollow structure, the upper air hole of core rod is located in the lower region below upper limiting ring and is provided with lower air hole in the lower region below inner sleeve;The lower part of last layer air cock is fixed with fairing, fairing is sleeved on the core rod outside and lower air hole is located in fairing, and fairing is connected with air valve by conduit;The lower part of last layer support plate is provided with core rod upper top unit.

Description

Technical Field

[0001] This invention relates to the field of medical device technology for calf support, specifically to a calf elevation device. Background Technology

[0002] Currently, some patients are unable to move their lower limbs freely due to illness or injury. However, if the patient's lower limbs remain inactive for a long time, it can lead to reduced blood return to the heart, lower limb edema, slow blood flow in the calf, venous thrombosis, pressure sores on the heel, foot drop, joint stiffness, and muscle atrophy. In particular, limb injuries or surgeries often cause limb swelling, and elevating the affected limb is one of the important nursing measures to reduce limb swelling. This is generally achieved by elevating the calf above the level of the heart, using gravity to promote blood circulation and reduce swelling and pain. However, traditional calf elevation devices are made of foam, cannot be adjusted in height, and have poor structural stability, making the affected limb prone to tilting and slipping.

[0003] Therefore, we propose a calf-elevating device. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of the shortcomings of the prior art, the present invention provides a calf elevation device that overcomes the shortcomings of the prior art. It has a reasonable design and compact structure, and solves the technical problems of the inability to adjust the height and poor structural stability of traditional calf elevation devices.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A calf-raising device, characterized in that: it includes a set of parallel and spaced support plates arranged from top to bottom, adjacent support plates are guided and engaged vertically by a guide assembly, an inflation unit is arranged between adjacent support plates, the inflation unit is connected to an air nozzle, the air nozzle includes an outer sleeve, an inner sleeve, a core rod and a spring, the outer sleeve is stepped with a larger upper part and a smaller lower part, the outer sleeve is fixed to the support plate, the large diameter end of the outer sleeve extends into the upper inflation unit, except for the last air nozzle, the small diameter end of the outer sleeve of other air nozzles extends into the lower inflation unit and is slidably inserted into the large diameter end of the outer sleeve of the vertically adjacent air nozzle, the inner sleeve is fixed in the outer sleeve, the core rod is slidably inserted vertically into the inner sleeve, the upper end of the core rod extends out of the inner sleeve and is connected to an upper limit ring, the middle part is located in the inner sleeve and is connected to a middle limit ring, the spring is sleeved outside the core rod, the upper and lower ends of the spring abut against the top wall of the inner sleeve and the middle limit ring respectively;

[0009] The core rod is a hollow structure, and the core rod has an upper vent hole in the area below the upper limit ring and a lower vent hole in the area below the inner sleeve.

[0010] A flow guide is fixed to the lower part of the inner sleeve of the last-layer air nozzle. The flow guide is sleeved on the outside of the core rod and its lower end is slidably sealed with the core rod. The lower vent of the core rod of the last-layer air nozzle is located in the vertical area covered by the flow guide. The flow guide is connected to the air valve through a conduit.

[0011] A core rod top unit is provided below the support plate of the last layer.

[0012] Furthermore, the core rod top unit includes a sliding groove, a driving block, a positioning block, and a pull rod. The sliding groove is fixed below the support plate of the last layer. The driving block is slidably installed in the sliding groove. The driving block has an inclined surface that abuts against the core rod of the last layer air nozzle. Positioning blocks are provided on both sides of the sliding groove and the driving block is connected to the pull rod.

[0013] Furthermore, the positioning block and the driving block are connected by magnetic attraction.

[0014] Furthermore, the air valve is a three-way valve, with one port connected to a conduit, one port for air intake and connected to a one-way valve, and the other port for air exhaust.

[0015] Furthermore, the outer sleeve has transition vent holes on the side wall of the large-diameter end.

[0016] Furthermore, the inflatable expansion unit includes a corrugated rubber sleeve, the upper and lower ends of which are respectively sealed and pressed onto the support plate by pressure rings.

[0017] Furthermore, the inflation unit is an airbag, and the top and bottom of the airbag are sealed and fitted to the support plate.

[0018] Furthermore, the guiding components are guide posts and guide sleeves. Except for the support plate of the last layer, the lower surface of the other support plates is fixed with guide sleeves. Except for the support plate of the top layer, the upper surface of the other support plates is fixed with guide posts. The guide posts and guide sleeves slide and guide each other vertically.

[0019] Furthermore, the guide sleeve protrudes from the lower surface of the support plate, and when the guide sleeve is attached to the lower support plate, a vertical gap is maintained between adjacent support plates; the guide sleeve is provided with a stepped hole in the axial direction, and the upper end of the guide post is provided with a limiting flange, and the limiting flange and the stepped surface of the stepped hole are matched for limiting.

[0020] Furthermore, an elastic membrane is wrapped around one of the support plates, and a zipper is provided at the pull rod and the air valve of the elastic membrane;

[0021] A set of the support plates has a detachable footrest with a U-shaped cross-section at the top;

[0022] A set of the support plates is detachably connected to a side bracket with a triangular cross-section;

[0023] The footrest and side support are connected to the elastic membrane via Velcro or other detachable structures.

[0024] Both the footrest and side support are made of flexible cushioning material.

[0025] (III) Beneficial Effects

[0026] This invention provides a calf elevation device. It offers the following advantages: The height of the support plate is infinitely adjustable by sequentially inflating and deflating each of the inflatable units from top to bottom, adapting to the needs of different patients with varying calf lengths and degrees of swelling. Specifically, the upper push unit of the core rod drives the last layer of the air nozzle to move the core rod upwards. Utilizing a bottom-up mechanical drive, i.e., the lower core rod pushes the upper core rod, each inflatable element deflates sequentially from top to bottom, causing the support plate to descend synchronously and steadily, avoiding limb swaying or discomfort due to sudden decompression. The guide component restricts the horizontal displacement of the support plate, avoiding the problem of traditional sponge pads easily tilting and slipping, ensuring the safety of the affected limb. Attached Figure Description

[0027] Figure 1 This is a cross-sectional view of the present invention from a first perspective;

[0028] Figure 2 for Figure 1 A magnified structural diagram of point A in the middle;

[0029] Figure 3 for Figure 2 A magnified structural diagram of section B in the middle;

[0030] Figure 4 for Figure 2 A magnified structural diagram of section C in the middle;

[0031] Figure 5 for Figure 3 A magnified structural diagram of section D in the middle;

[0032] Figure 6 This is a cross-sectional view of the second perspective of the present invention, omitting the elastic membrane.

[0033] In the picture:

[0034] 1. Elastic membrane;

[0035] 2. Top-level support plate;

[0036] 3. Final layer support plate;

[0037] 4. Intermediate support plate;

[0038] 5. Outerwear leg;

[0039] 5a. Transition pores;

[0040] 6. Inner sleeve;

[0041] 7. Core rod;

[0042] 7a. Upper vent;

[0043] 7b. Lower vent;

[0044] 8. Spring;

[0045] 9. Catheter;

[0046] 10. Air valve;

[0047] 11. Guide post;

[0048] 12. Guide sleeve;

[0049] 13. Pull rod;

[0050] 14. Driver block;

[0051] 15. Positioning block;

[0052] 16. Slide groove;

[0053] 17. Rubber sleeve;

[0054] 18. Pressure ring;

[0055] 19. Radiator fairing. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, 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.

[0057] See attached document Figure 1-6A calf-elevating device includes a set of parallel and spaced support plates arranged from top to bottom (i.e., the top support plate 2, the middle support plate 4, and the bottom support plate 3 in the figure; the support plates can be made of honeycomb board or hollow board; embedded reinforcing members are provided at the corresponding joints with other components to achieve overall lightweighting of each support plate). Adjacent support plates are guided vertically by a guide assembly. An inflation unit is provided between adjacent support plates. The inflation unit is connected to an air nozzle. The air nozzle includes an outer sleeve 5, an inner sleeve 6, a core rod 7, and a spring 8. The outer sleeve 5 is stepped, wider at the top and narrower at the bottom. A transition air hole 5a is provided on the side wall of the larger diameter end of the outer sleeve 5. The outer sleeve 5 is fixed to the support plate. The end extends into the upper inflation unit. Except for the last air nozzle, the small-diameter end of the outer sleeve 5 of the other air nozzles extends into the lower inflation unit and slides into the large-diameter end of the outer sleeve 5 of the vertically adjacent air nozzle. The inner sleeve 6 is fixed in the outer sleeve 5. The core rod 7 is slidably inserted into the inner sleeve 6 along the vertical direction. The upper end of the core rod 7 extends out of the inner sleeve 6 and is connected to an upper limit ring. The middle part is located in the inner sleeve 6 and is connected to a middle limit ring. The spring 8 is sleeved on the outside of the core rod 7. The upper and lower ends of the spring 8 abut against the top wall of the inner sleeve 6 and the middle limit ring, respectively (the upper limit ring is located outside the inner sleeve 6, and the middle limit ring is located in the inner sleeve 6. The upper limit ring and the core rod 7 can be welded together, and the middle limit ring and the core rod 7 can be threaded together).

[0058] The core rod 7 is a hollow structure. The core rod 7 has an upper vent hole 7a in the area below the upper limit ring and a lower vent hole 7b in the area below the inner sleeve 6.

[0059] A flow guide shroud 19 is fixed at the lower part of the inner sleeve 6 of the last layer air nozzle. The flow guide shroud 19 is sleeved on the outside of the core rod 7 and its lower end is slidably sealed with the core rod 7. The lower vent hole 7b of the core rod 7 of the last layer air nozzle is located in the vertical area covered by the flow guide shroud 19. The flow guide shroud 19 is connected to the air valve 10 through the conduit 9.

[0060] A core rod top unit is provided below the support plate of the last layer.

[0061] The exhaust descent process is as follows:

[0062] 1. During the triggering phase, the core rod lifting unit pushes the core rod 7 of the last layer air nozzle upwards, so that the last layer core rod 7, which was originally located in the upper vent hole 7a in the inner sleeve 6 (see...). Figure 3Simultaneously, the core rod 7 moves upward and is exposed to the outside. The upper vent 7a of the last core rod 7 is connected to the transition vent 5a of the outer sleeve 5. The gas in the last inflation expansion unit is discharged through the inflation expansion unit, the transition vent 5a, the upper vent 7a of the core rod 7, the inner cavity of the core rod 7, the lower vent 7b of the core rod 7, the guide hood 19, the guide tube 9, and the air valve 10. The last inflation expansion unit contracts, and the support plate of the second to last layer moves downward synchronously when the last inflation expansion unit contracts.

[0063] 2. During the linkage phase, when the upper support plate (starting from the second-to-last support plate) moves downward, its fixed air nozzle moves downward synchronously. The small diameter end of the outer sleeve 5 of the upper air nozzle moves downward relative to the large diameter end of the outer sleeve 5 of the lower air nozzle, thereby causing the lower core rod 7 to abut against the upper core rod 7, causing it to move upward relative to itself (i.e., moving upward relative to its own outer sleeve 5 and inner sleeve 6). After the upper core rod 7 moves upward relative to itself, its upper vent hole 7a connects with the transition vent hole 5a of its own outer sleeve 5, and the gas of the upper inflation expansion unit is discharged through the same path, and the upper support plate descends accordingly. The exhaust process is transmitted step by step from bottom to top until all support plates are lowered to the initial preset position (i.e., the guide sleeve 12 abuts against the lower support plate, preventing further downward movement).

[0064] During the exhaust descent process, the small-diameter end of the upper outer sleeve 5 extends into the large-diameter end of the lower outer sleeve 5 until it seals the transition vent 5a, reducing the amount of gas in the upper inflation expansion unit entering the lower inflation expansion unit. Additionally, a sealing ring can be installed at the bottom of the outer wall of the small-diameter end of the outer sleeve 5.

[0065] The inflation and rising process is as follows:

[0066] 1. Triggering Phase: This phase is similar to the triggering phase of the exhaust descent process. The core rod 7 remains in the upward position. Since the transition air holes 5a of the outer sleeves 5, except for the top outer sleeve 5, are blocked, the top inflation expansion unit is inflated first during inflation. The top support plate 2 rises synchronously with the expansion of the top inflation expansion unit. When the top inflation expansion unit reaches the threshold, it can no longer be inflated. The air pressure between the small diameter end of the top outer sleeve 5 and the large diameter end of the lower outer sleeve 5 will continue to rise, pushing the top outer sleeve 5 (along with the top air nozzle, the intermediate support plate on which the top air nozzle is installed, the top inflation expansion unit above it, and the top support plate 2 as a whole) upward, thereby exposing the transition air hole 5a of the lower outer sleeve 5 to trigger the inflation of the lower inflation expansion unit.

[0067] 2. During the linkage phase, the upper inflation unit expands, pushing the upper support plate upward. The upper air nozzle exposes the transition air hole 5a of the lower air nozzle. The lower inflation unit continues to push the upper support plate upward until the required height is reached. The upper core rod lifting unit releases the upper core rod 7. Under the action of the spring 8 and air pressure, the lower core rod 7 moves down to its upper vent 7a and retracts into the inner sleeve 6. The upper limit ring at the top of the core rod 7, together with the sealing ring on the back of the upper limit ring, seals the connection between the two. The upper core rod 7 is synchronously reset to the same state as the lower core rod 7.

[0068] In this embodiment, the core rod lifting unit includes a sliding groove 16, a driving block 14, a positioning block 15, and a pull rod 13. The sliding groove 16 is fixed below the support plate of the last layer. The driving block 14 is slidably installed in the sliding groove 16. The driving block 14 has an inclined surface that abuts against the core rod 7 of the last layer air nozzle. Positioning blocks 15 are located on both sides of the sliding groove 16 and the driving block 14 is connected to the pull rod 13. Pushing the pull rod 13 inward causes the driving block 14 to move horizontally within the sliding groove 16. Its inclined surface abuts against the lower end of the core rod 7 of the last layer air nozzle, lifting the core rod 7 upward. The inclined surface of the driving block 14 converts the horizontal thrust into the vertical thrust of the core rod 7. The positioning block 15 limits the horizontal travel of the driving block 14 to prevent excessive pushing or pulling from causing the core rod 7 to jam. The aforementioned conduit 9 and air valve 10 are both installed in the slide groove 16. The conduit 9 can be supported by the lugs, and the air valve 10 can be detachably installed at the end of the slide groove 16 through the snap-fit ​​structure. When inflation or deflation is required, the air valve 10 can be removed for easy operation.

[0069] In this embodiment, the positioning block 15 and the driving block 14 are connected by magnetic attraction, which enables the positioning block 15 to remain in a preset position when pushed forward and pulled out, making it convenient to free up hands to perform other operations.

[0070] In this embodiment, the air valve 10 is a three-way valve. One port of the air valve 10 is connected to the conduit 9, and the other two ports are used for exhaust and intake, respectively. The other two ports are controlled by the valve to open and close separately, and the intake port is equipped with a one-way valve to prevent gas from leaking back after inflation.

[0071] In this embodiment, the inflatable expansion unit includes a corrugated rubber sleeve 17, the upper and lower ends of which are sealed and pressed onto the support plate by pressure rings 18. In other embodiments, the inflatable expansion unit can also be an airbag, the top and bottom of which are sealed and fitted to the support plate.

[0072] In this embodiment, the guiding components are guide posts 11 and guide sleeves 12. Except for the last layer's support plate, guide sleeves 12 are fixed to the lower surfaces of the other support plates. Except for the top layer's support plate, guide posts 11 are fixed to the upper surfaces of the other support plates. The guide posts 11 and guide sleeves 12 slide and guide each other vertically. Specifically, the guide sleeve 12 protrudes from the lower surface of the support plate. When the guide sleeve 12 is in contact with the lower support plate, a vertical gap is maintained between adjacent support plates. This gap can accommodate the deflated inflation unit, preventing it from being crushed. The guide sleeve 12 has a stepped hole in the axial direction, and the upper end of the guide post 11 has a limiting flange. The limiting flange and the stepped surface of the stepped hole limit each other to prevent the guide post 11 from coming out and to limit the maximum height of the support plate, avoiding over-inflation that could cause the device to malfunction.

[0073] In this embodiment, a set of support plates is wrapped with an elastic membrane 1, and the elastic membrane 1 is provided with a zipper at the pull rod and the air valve 10.

[0074] A set of the support plates has a detachable footrest with a U-shaped cross-section at the top;

[0075] A set of the support plates is detachably connected to a side support with a triangular cross section. The inclined surface of the side support can support the thigh part that is tilted after the lower leg is raised.

[0076] The footrest and side support are connected to the corresponding side elastic membrane 1 via Velcro or other detachable structures;

[0077] Both the footrest and side support are made of flexible cushioning material (such as sponge).

[0078] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0079] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A calf-elevating device, characterized in that: The device includes a set of parallel and spaced support plates arranged from top to bottom. Adjacent support plates are guided vertically by a guide assembly. An inflation unit is provided between adjacent support plates. The inflation unit is connected to an air nozzle. The air nozzle includes an outer sleeve, an inner sleeve, a core rod, and a spring. The outer sleeve is stepped, wider at the top and narrower at the bottom. The outer sleeve is fixed to the support plate. The larger diameter end of the outer sleeve extends into the upper inflation unit. Except for the last air nozzle, the smaller diameter end of the outer sleeve of other air nozzles extends into the lower inflation unit and slides into the larger diameter end of the outer sleeve of the vertically adjacent air nozzle. The inner sleeve is fixed in the outer sleeve. The core rod is slidably inserted vertically into the inner sleeve. The upper end of the core rod extends out of the inner sleeve and is connected to an upper limit ring. The middle part is located in the inner sleeve and is connected to a middle limit ring. The spring is sleeved on the outside of the core rod. The upper and lower ends of the spring abut against the top wall of the inner sleeve and the middle limit ring, respectively. The core rod is a hollow structure, and the core rod has an upper vent hole in the area below the upper limit ring and a lower vent hole in the area below the inner sleeve. A flow guide is fixed to the lower part of the inner sleeve of the last-layer air nozzle. The flow guide is sleeved on the outside of the core rod and its lower end is slidably sealed with the core rod. The lower vent of the core rod of the last-layer air nozzle is located in the vertical area covered by the flow guide. The flow guide is connected to the air valve through a conduit. A core rod top unit is provided below the support plate of the last layer.

2. The calf-elevating device as described in claim 1, characterized in that: The core rod top unit includes a sliding groove, a driving block, a positioning block, and a pull rod. The sliding groove is fixed below the support plate of the last layer. The driving block is slidably installed in the sliding groove. The driving block has an inclined surface that abuts against the core rod of the last layer air nozzle. Positioning blocks are provided on both sides of the sliding groove and the driving block is connected to the pull rod.

3. The calf-elevating device as described in claim 2, characterized in that: The positioning block and the driving block are connected by magnetic attraction.

4. The calf-elevating device as described in claim 3, characterized in that: The air valve is a three-way valve, with one port connected to a conduit, one port for air intake and connected to a one-way valve, and the other port for air exhaust.

5. The calf-elevating device as described in claim 1, characterized in that: The outer sleeve has transition vent holes on the side wall of the large-diameter end.

6. The calf-elevating device as described in claim 1, characterized in that: The inflatable expansion unit includes a corrugated rubber sleeve, the upper and lower ends of which are respectively sealed and pressed onto the support plate by pressure rings.

7. The calf-elevating device as described in claim 1, characterized in that: The inflatable expansion unit is an airbag, and the top and bottom of the airbag are sealed and fitted to the support plate.

8. The calf-elevating device as described in claim 1, characterized in that: The guiding components are guide posts and guide sleeves. Except for the support plate of the last layer, the lower surface of the other support plates is fixed with guide sleeves. Except for the support plate of the top layer, the upper surface of the other support plates is fixed with guide posts. The guide posts and guide sleeves slide and guide each other vertically.

9. The calf-elevating device as described in claim 8, characterized in that: The guide sleeve protrudes from the lower surface of the support plate. When the guide sleeve is attached to the lower support plate, a vertical gap is maintained between adjacent support plates. The guide sleeve is provided with a stepped hole in the axial direction. The upper end of the guide post is provided with a limiting flange. The limiting flange and the stepped surface of the stepped hole are matched for limiting.

10. The calf-elevating device as described in claim 1, characterized in that: A set of the support plates is wrapped with an elastic membrane, and the elastic membrane is provided with a zipper at the pull rod and the air valve; A set of the support plates has a detachable footrest with a U-shaped cross-section at the top; A set of the support plates is detachably connected to a side bracket with a triangular cross-section; The footrest and side support are connected to the elastic membrane via Velcro or other detachable structures. Both the footrest and side support are made of flexible cushioning material.

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