Knee joint rehabilitation device
By designing a knee rehabilitation device with lifting and adjusting mechanisms, the problem that knee rehabilitation devices in the prior art is difficult to adjust the leg lift distance and apply pressure, and a more effective knee rehabilitation training effect is achieved.
Patent Information
- Application Number
- CN202420895753.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-04-26
AI Technical Summary
Existing knee rehabilitation devices are difficult to adjust the patient's leg elevation distance and apply knee pressure, resulting in poor training results and prone to training interruptions.
A knee rehabilitation device including a rectangular frame, a curved pressure plate and an adjustment mechanism is designed to achieve flexible adjustment of the leg lift distance and pressure applied to the knee joint through the lifting mechanism and the adjustment mechanism, ensuring complete relaxation of the knee joint and muscles. and can continuously apply appropriate pressure.
Effectively adjust the patient's leg elevation distance and the pressure applied by the knee joint, improves the training effect, avoids training interruptions, and ensures a complete relaxation state of the knee joint and muscles.
Smart Images
Figure CN222341526U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of rehabilitation, in particular to a knee joint rehabilitation device. Background Art
[0002] Due to the influence of various diseases, people's knee joints are getting damaged more and more, especially rheumatic diseases, such as rheumatoid arthritis, osteoarthritis, gout, etc. In the late stage of rheumatoid arthritis, the knee joints have become stiff or deformed. We need surgery to restore the joints to normal movement, and we need some rehabilitation training to speed up recovery. Rehabilitation training is mainly divided into active training and passive training. Active training is mainly flexion exercises, and passive training is extension exercises. At present, more attention is paid to flexion exercises, but not to extension exercises, which can easily cause patients to have problems with one long and one short legs. Therefore, passive extension training after knee surgery cannot be ignored.
[0003] The existing passive stretching exercise is to lift the patient's affected limb off the bed, and sometimes a certain weight needs to be applied above the knee joint. The existing method is to pad the patient's heel with a quilt to lift the patient's leg. The weight applied is generally some objects wrapped in cotton cloth and then placed above the knee joint. During use, when lifting the affected limb, it is not only necessary to completely lift it off the bed, but also to extend the affected limb naturally to completely relax the joints and muscles. The length of each person's leg is different, so the distance of leg lifting for different patients is also different. The method of lifting the affected limb with a quilt is not suitable for the patient. It is not convenient to adjust the distance of raising the affected limb; and wrapping objects with cotton cloth to apply pressure to the knee joint, because each training time is 30 minutes, and it must be continuous, the time is relatively long, and the objects wrapped in cotton cloth are easy to slip, thus interrupting the continuity and affecting the exercise effect, and the maximum pressure applied to the knee joint is different in different time periods. Generally, the pressure increases with the increase of time, and is generally adjusted at the time node of 10 or 20 minutes. Applying pressure by wrapping objects with cotton cloth is not convenient for adjusting the pressure applied to the knee joint. Utility Model Content
[0004] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is: to provide a knee joint rehabilitation device, which is convenient for adjusting the distance of the patient's leg lifting and the pressure applied to the knee joint.
[0005] The knee joint rehabilitation device comprises a rectangular frame without front and rear side walls. A pressure plate with an arc structure is arranged in the frame. A lifting mechanism for adjusting the height of the pressure plate is arranged on the top of the frame. A first fixed block is detachably arranged in the frame below the pressure plate. A through groove which is connected front and back and has an arc structure is opened on the top of the first fixed block. The through groove and the pressure plate are annular in structure as a whole. Protective pads are arranged on the bottom of the pressure plate and the surface of the through groove. An adjusting mechanism for adjusting the height of the first fixed block is arranged below the first fixed block. A fixing mechanism for fixing it to the bed is arranged at the bottom of the frame.
[0006] Furthermore, the lifting mechanism includes a groove body with a groove facing upward, the groove body is fixed to the inner top of the frame, a movable block is independently arranged in the groove body, a fixing rod is vertically fixed to the bottom of the movable block, a first through hole is opened at the bottom of the groove body for the bottom end of the fixing rod to pass through, the bottom end of the fixing rod is fixed to the top of the pressure plate through the first through hole, a spring is sleeved on the fixing rod between the movable block and the bottom of the groove body, a threaded hole is vertically opened at the top of the frame, a bolt threadedly matched therewith is arranged in the threaded hole, and the screw of the bolt passes through the threaded hole and presses on the top of the movable block.
[0007] Furthermore, first guide rods are vertically fixed to the bottom of the groove bodies on the left and right sides of the fixed rod, and a second through hole for the first guide rod to pass through is opened on the movable block.
[0008] Furthermore, rollers that roll up and down on the left and right inner walls of the groove body are installed on both the left and right sides of the movable block.
[0009] Furthermore, the left and right inner side walls of the groove body are both provided with a first sliding groove for the roller to be inserted and rolled up and down.
[0010] Furthermore, a first groove for inserting a screw rod of the bolt is provided on the top of the movable block, and a first bearing is provided between the screw rod of the bolt and the first groove.
[0011] Furthermore, the adjustment mechanism includes a fixed plate horizontally arranged below the first fixed block, a screw is vertically fixed in the middle of the top of the fixed plate, a sleeve threadedly matched with the screw is sleeved on the screw, a second groove for inserting the top of the first fixed block is provided at the bottom of the first fixed block, a second bearing is provided between the top of the sleeve and the second groove, a plurality of second guide rods are vertically fixed to the top of the fixed plate around the screw, and a second sliding groove for inserting the second guide rod and sliding up and down is provided at the bottom of the first fixed block.
[0012] Furthermore, a first limit block is horizontally fixed to the top end of the second guide rod, and a second limit block is fixed to the notch of the second slide slot to prevent the first limit block from detaching.
[0013] Furthermore, the left and right inner walls of the frame are provided with third sliding grooves for inserting the left and right ends of the first fixed block and the fixed plate and sliding horizontally, the third sliding grooves have no front side walls, and the side walls of the frame are provided with bolts for fixing the first fixed block in the third sliding grooves.
[0014] Furthermore, the fixing mechanism includes two second fixing blocks, which are respectively fixed to the bottom of the left and right sides of the frame, a fourth slide groove is opened at the end of the second fixing block away from the frame, a slider is independently arranged in the fourth slide groove, a bolt for fixing the slider in the fourth slide groove is arranged on the top of the second fixing block, one end of the slider passes through the fourth slide groove and a clamping block is vertically fixed at the bottom.
[0015] Compared with the prior art, the utility model has the following beneficial effects:
[0016] The utility model adjusts the height of the first fixing block, thereby adjusting the distance by which the patient's legs are raised, so that the patient's legs are naturally extended and the knee joints and muscles are in a completely relaxed state; the pressure plate can continuously apply pressure to the knee joint, and the pressure applied to the knee joint can also be adjusted by adjusting the height of the pressure plate, so that the training effect is better. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the structure of the utility model;
[0018] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;
[0019] Figure 3 for Figure 1 A schematic diagram of the front view structure of
[0020] The names of the components in the figure are: 1, frame 2, pressure plate 3, first protection pad 4, trough body 5, first guide rod 6, bolt 7, spring 8, movable block 9, fixed rod 10, first fixed block 11, fixed plate 12, second fixed block 13, slider 14, clamping block 15, second guide rod 16, sleeve 17, screw 18, second protection pad 19, second limit block 20, first limit block 21, roller. DETAILED DESCRIPTION
[0021] The present invention is further described below through specific embodiments in conjunction with the accompanying drawings, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
[0022] A knee joint rehabilitation device described in this embodiment, such as Figure 1 , Figure 2 and Figure 3As shown in the figure, it includes a frame 1 with a rectangular structure. The frame 1 has no front and rear side walls. Preferably, the frame 1 has no bottom, making the whole frame 1 in a "匚" - shaped structure with the opening facing downwards. An arc - shaped pressing plate 2 is arranged inside the frame 1. The pressing plate 2 is in a "C" - shaped structure with the opening facing downwards, so that the contact area between the pressing plate 2 and the patient's knee joint is relatively large, and the left - right sliding of the patient's knee joint can be reduced.
[0023] A groove 4 with the notch facing upwards is fixed to the inner top of the frame 1. The groove 4 is a rectangular - shaped groove. An active block 8 is independently arranged inside the groove 4, enabling the active block 8 to slide up and down. A fixing rod 9 is vertically fixed to the bottom of the active block 8. A first through - hole for the bottom end of the fixing rod 9 to pass through is opened at the bottom of the groove of the groove 4. The bottom end of the fixing rod 9 passes through the first through - hole and is fixed to the top of the pressing plate 2. A spring 7 is sleeved on the fixing rod 9 between the bottom of the active block 8 and the bottom of the groove of the groove 4. In the natural state of the spring 7, the active block 8 is located at the uppermost part of the groove 4, that is, the height of the pressing plate 2 is the highest. A threaded hole is vertically opened at the top of the frame 1, and the threaded hole is located directly above the groove 4. A bolt 6 in threaded fit with the threaded hole is arranged inside the threaded hole. The screw rod of the bolt 6 passes through the threaded hole and presses against the top of the active block 8. By screwing the bolt 6 downwards, the bolt 6 presses the active block 8 downwards, compressing the spring 7, and the fixing rod 9 drives the pressing plate 2 to move downwards. By screwing the bolt 6 upwards, the spring 7 restores its elasticity, making the active block 8 move upwards, and the fixing rod 9 drives the pressing plate 2 to move upwards. This paragraph as a whole constitutes a lifting mechanism for adjusting the height of the pressing plate 2. Of course, in the actual use process, the structure of the lifting mechanism can also be the same as that of the adjusting mechanism.
[0024] Further explanation is as follows. On the inner bottom of the groove 4 on both the left and right sides of the fixing rod 9, two first guide rods 5 are vertically fixed. The two first guide rods 5 are symmetrically distributed on the left and right with the fixing rod 9 as the center. Second through - holes for the first guide rods 5 to pass through are opened on the active block 8. The top ends of the first guide rods 5 are fixed to the inner top of the frame 1. The up - and - down sliding of the active block 8 can be restricted by the first guide rods 5.
[0025] Rollers 21 that roll up and down are installed on both the left and right sides of the active block 8 and roll on the left and right inner side walls of the groove 4. The rollers 21 are directional wheels that roll up and down. There are gaps between the front and rear side walls of the active block 8 and the front and rear inner side walls of the groove 4. By means of the rollers 21, contact between the left and right sides of the active block 8 and the inner side walls of the groove 4 can be avoided, reducing the friction between the active block 8 and the groove 4, and making the up - and - down sliding of the active block 8 smoother.
[0026] First chutes for the rollers 21 to insert and roll up and down are opened on both the left and right inner side walls of the groove 4. The up - and - down rolling of the rollers 21 can be further restricted through the first chutes to prevent the rollers 21 from shifting.
[0027] A first groove for inserting the screw rod of the bolt 6 is provided on the top of the movable block 8. The first groove is a circular structure. A first bearing is arranged between the screw rod of the bolt 6 and the first groove. The inner ring of the first bearing is fixedly sleeved on the bottom of the screw rod of the bolt 6. The outer ring of the first bearing is fixed to the first groove. Preferably, there is a gap between the bottom end of the screw rod of the bolt 6 and the bottom of the first groove. This can prevent the screw rod of the bolt 6 from contacting the first groove and reduce the friction between the bolt 6 and the movable block 8.
[0028] The left and right inner walls of the frame 1 are both provided with a third slide groove for the left and right ends of the first fixing block 10 and the fixing plate 11 to be inserted and slide horizontally, that is, the length of the first fixing block 10 and the fixing plate 11 is greater than the length between the left and right inner walls of the frame 1 but less than the length between the two outer walls of the frame 1. The third slide groove has no front side wall, and the first fixing block 10 and the fixing plate 11 can be inserted into the third slide groove from the front side. The side wall of the frame 1 is provided with bolts for fixing the first fixing block 10 in the third slide groove. When in use, the first fixing block 10 is loosened by the bolts, and then the first fixing block 10 and the fixing plate 11 are taken out of the third slide groove. After use, the first fixing block 10 and the fixing plate 11 are inserted into the third slide groove and then fixed by the bolts. This paragraph of text as a whole makes the first fixing block 10 and the frame 1 detachable. In this way, the first fixing block 10 can be placed in the frame 1, reducing space occupancy and facilitating movement.
[0029] A through groove which is connected front to back and has an arc-shaped structure is provided on the top of the first fixing block 10. The through groove and the pressure plate 2 are annular in structure as a whole. The through groove is a "C"-shaped structure with the opening facing upward, so that the contact area between the through groove and the patient's heel is larger and the fit is higher. The bottom of the pressure plate 2 and the surface of the through groove are provided with protection pads. The bottom of the pressure plate 2 is provided with a first protection pad 3, and the structure of the first protection pad 3 is consistent with that of the pressure plate 2. The surface of the through groove is provided with a second protection pad 18. The first protection pad 3 and the second protection pad 18 are both made of foam, which can prevent the pressure plate 2 and the second protection pad 18 from directly contacting the patient, thereby improving the patient's comfort. Of course, the first protection pad 3 and the second protection pad 18 can also be made of rubber.
[0030] A fixing plate 11 is horizontally arranged below the first fixing block 10, and the length of the fixing plate 11 is consistent with that of the first fixing block 10. A screw 17 is vertically fixed in the middle of the top of the fixing plate 11, and a sleeve 16 threadedly matched with the screw 17 is sleeved on the screw 17. The inner side wall of the sleeve 16 is provided with an internal thread threadedly matched with the screw 17. A second groove for inserting the top of the first fixing block 10 is provided at the bottom of the first fixing block 10. The second groove is a circular structure. A second bearing is arranged between the top of the sleeve 16 and the second bearing. The inner ring of the second bearing is fixedly sleeved on the top of the sleeve 16, and the outer ring of the second bearing is fixed to the second groove. A plurality of second guide rods 15 are vertically fixed to the top of the fixing plate 11 around the screw 17. Preferably, four second guide rods 15 are provided, which are respectively fixed to the four guide rods at the top of the fixing plate 11 The second guide rod 15 is located in the second slot, which can limit the up and down movement of the first fixed block 10 to prevent it from being offset. Of course, in actual use, the screw 17 can be replaced by a fixed rod, and the top of the sleeve 16 is directly fixed to the bottom of the first fixed block 10, and the sleeve 16 is provided with a bolt for fixing it to the fixed rod; this paragraph constitutes an adjustment mechanism for adjusting the height of the first fixed block 10 as a whole. A first limit block 20 is horizontally fixed to the top end of the second guide rod 15. The first limit block 20 is a circular plate. The diameter of the second guide rod 15 is smaller than the diameter of the first limit block 20. The notch of the second slide groove is fixed with a second limit block 19 to prevent the first limit block 20 from disengaging. The second limit block 19 is annular, and the second slide groove is a circular structure. The outer ring of the second limit block 19 is fixed to the second slide groove, and the inner ring diameter of the second limit block 19 is smaller than the diameter of the first limit block 20. The diameter of the second guide rod 15 is smaller than the inner ring diameter of the second limit block 19, so that the second guide rod 15 can slide up and down in the inner ring of the second limit block 19, and the first limit block 20 can be prevented from passing through the inner ring of the second limit block 19, thereby preventing the first limit block 20 from disengaging from the second slide groove.
[0031] The bottom of the left and right sides of the frame 1 are fixed with second fixing blocks 12, and two second fixing blocks 12 are provided. A fourth slide groove is provided at the end of the second fixing block 12 away from the frame 1, a fourth slide groove is provided at the left end surface of the left second fixing block 12, and a fourth slide groove is provided at the right end surface of the right second fixing block 12. The third slide groove is a rectangular structure, and a slider 13 is independently provided in the fourth slide groove. A bolt for fixing the slider 13 in the fourth slide groove is provided on the top of the second fixing block 12, one end of the slider 13 passes through the fourth slide groove and a clamping block 14 is vertically fixed at the bottom, a clamping block 14 is vertically fixed at the left end bottom of the left slider 13, and a clamping block 14 is vertically fixed at the right end bottom of the right slider 13. The clamping block 14 can adjust the distance between the two clamping blocks 14 by sliding the slider 13 left and right in the fourth slide groove, so that the two clamping blocks 14 can be located on both sides of the bed respectively, and then the slider 13 is fixed in the fourth slide groove by the bolts on the top of the second fixing block 12, so that the two clamping blocks 14 are tightly attached to the two sides of the bed, so that the two clamping blocks 14 clamp and fix the bed, and then fix the frame 1 to the top of the bed. Of course, in actual use, bolts can also be set on one of the clamping blocks 14, and the bolts can increase the fixing effect of the clamping block 14 on the bed; this paragraph of text as a whole constitutes a fixing mechanism for fixing the frame 1 to the bed.
[0032] Working principle:
[0033] When in use, to perform passive extension training on the patient's knee joint, the fixing plate 11 and the first fixing block 10 are taken out of the frame 1, and then the first fixing block 10 and the fixing plate 11 are placed on the patient's toes, and the patient's heels are located in the through groove at the top of the first fixing block 10, and then the sleeve 16 is rotated to change the combined height of the sleeve 16 and the screw 17, so as to adjust the height of the first fixing block 10, so that the patient's legs are completely lifted off the bed surface, the patient's legs are naturally extended, and the knee joints and muscles are completely relaxed, and then Move the frame 1 to the top of the patient's knee joint, and make the two clamping blocks 14 respectively located on both sides of the bed, fix the frame 1 to the bed, and then adjust the height of the pressure plate 2 by the bolt 6, so that the pressure plate 2 contacts the top of the patient's knee joint to apply pressure to the knee joint, and the pressure plate 2 can continuously apply pressure to the knee joint, which can effectively prevent training interruptions. As time goes by, the bolt 6 can also be turned downward to increase the pressure of the pressure plate 2 on the patient's knee joint, which is convenient for adjusting the pressure on the knee joint and achieving better training effects.
Claims
1. A knee joint rehabilitation device, comprising a rectangular frame (1), the frame (1) having no front and rear side walls, characterized in that: A pressing plate (2) with an arc structure is arranged in the frame (1), a lifting mechanism for adjusting the height of the pressing plate (2) is arranged at the top of the frame (1), a first fixing block (10) is detachably arranged in the frame (1) below the pressing plate (2), a through groove which is connected front to back and has an arc structure is opened at the top of the first fixing block (10), the through groove and the pressing plate (2) are annular in structure as a whole, the bottom of the pressing plate (2) and the surface of the through groove are both provided with protective pads, an adjusting mechanism for adjusting the height of the first fixing block (10) is arranged below the first fixing block (10), and a fixing mechanism for fixing the first fixing block to the hospital bed is arranged at the bottom of the frame (1).
2. The knee joint rehabilitation device according to claim 1, characterized in that: The lifting mechanism comprises a slot body (4) with a slot facing upward, the slot body (4) is fixed to the inner top of the frame (1), a movable block (8) is independently arranged in the slot body (4), a fixing rod (9) is vertically fixed to the bottom of the movable block (8), a first through hole for the bottom end of the fixing rod (9) to pass through is opened at the slot bottom of the slot body (4), the bottom end of the fixing rod (9) passes through the first through hole and is fixed to the top of the pressure plate (2), a spring (7) is sleeved on the fixing rod (9) between the movable block (8) and the slot bottom of the slot body (4), a threaded hole is vertically opened at the top of the frame (1), a bolt (6) threadedly matched therewith is arranged in the threaded hole, and the screw rod of the bolt (6) passes through the threaded hole and presses on the top of the movable block (8).
3. The knee joint rehabilitation device according to claim 2, characterized in that: First guide rods (5) are vertically fixed to the inner groove bottom of the groove body (4) on the left and right sides of the fixed rod (9), and a second through hole for the first guide rod (5) to pass through is opened on the movable block (8).
4. The knee joint rehabilitation device according to claim 3, characterized in that: Rollers (21) are installed on both left and right sides of the movable block (8) and roll up and down on the left and right inner walls of the trough body (4).
5. The knee joint rehabilitation device according to claim 4, characterized in that: The left and right inner side walls of the trough body (4) are both provided with a first sliding groove for the roller (21) to be inserted and roll up and down.
6. The knee joint rehabilitation device according to claim 5, characterized in that: A first groove for inserting the screw rod of the bolt (6) is provided on the top of the movable block (8), and a first bearing is provided between the screw rod of the bolt (6) and the first groove.
7. The knee joint rehabilitation device according to claim 1 or 6, characterized in that: The adjustment mechanism comprises a fixing plate (11) horizontally arranged below the first fixing block (10); a screw rod (17) is vertically fixed in the middle of the top of the fixing plate (11); a sleeve (16) threadedly matched with the screw rod (17) is sleeved on the screw rod (17); a second groove for inserting the top of the first fixing block (10) is provided at the bottom of the first fixing block (10); a second bearing is provided between the top of the sleeve (16) and the second groove; a plurality of second guide rods (15) are vertically fixed at the top of the fixing plate (11) around the screw rod (17); and a second sliding groove for inserting the second guide rod (15) and sliding up and down is provided at the bottom of the first fixing block (10).
8. The knee joint rehabilitation device according to claim 7, characterized in that: A first limiting block (20) is horizontally fixed to the top end of the second guide rod (15), and a second limiting block (19) is fixed to the notch of the second slide slot to prevent the first limiting block (20) from detaching.
9. The knee joint rehabilitation device according to claim 8, characterized in that: The left and right inner side walls of the frame (1) are both provided with third sliding grooves for inserting the left and right ends of the first fixing block (10) and the fixing plate (11) and sliding horizontally, the third sliding grooves have no front side walls, and the side walls of the frame (1) are provided with bolts for fixing the first fixing block (10) in the third sliding grooves.
10. The knee joint rehabilitation device according to claim 1, characterized in that: The fixing mechanism comprises two second fixing blocks (12), the second fixing blocks (12) being fixed to the bottom of the left and right sides of the frame (1) respectively, a fourth slide groove is provided at one end of the second fixing block (12) away from the frame (1), a slider (13) is independently arranged in the fourth slide groove, a bolt for fixing the slider (13) in the fourth slide groove is arranged at the top of the second fixing block (12), one end of the slider (13) passes through the fourth slide groove and a clamping block (14) is vertically fixed at the bottom.