A rehabilitation nursing device convenient for knee flexion training

Abstract

The present invention relates to the technical field of medical devices, and in particular to a rehabilitation nursing device that facilitates knee flexion training, comprising: a chair body and two knee flexion units connected to the front end of the chair body; the knee flexion unit includes a swing arm rotatably connected to the chair body, and a footrest is installed at the bottom end of the swing arm; wherein the bottom of the chair body is provided with a displacement mechanism, and a telescopic unit is connected between the displacement mechanism and the swing arm. The present invention adopts two independently controlled knee flexion units, which can adapt to the training needs of single leg or double legs during knee flexion training. At the same time, the damping component provided can provide a certain knee flexion damping force during the patient's active training, and the resistance size is adjustable to meet the training needs of different patients. In the auxiliary mode, the displacement mechanism directly drives the knee flexion unit to rotate, and multiple training modes greatly improve the applicability of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a rehabilitation nursing device that facilitates knee flexion training. Background Art

[0002] The hip bones are located on either side of the pelvis in the human skeleton. Due to their prominent position, they are susceptible to impact and injury. For patients with hip fractures, rehabilitation training is crucial in addition to surgical treatment. However, due to limited mobility, patients are often bedridden or wheelchair-bound, unable to move their legs for extended periods, which can significantly impact their postoperative recovery.

[0003] Currently, specialized caregivers are often required to provide massage or assist with leg lifts and knee flexion exercises to accelerate recovery. However, this traditional approach has significant drawbacks: First, it relies on manual intervention, which is inefficient and costly. Second, due to the limitations of manual intervention, it is difficult to ensure adequate intensity and angle for training. Furthermore, existing rehabilitation training equipment often has limited functionality and cannot be tailored to the specific needs of individual patients, limiting training effectiveness. For patients requiring personalized training programs, existing equipment is less suitable.

[0004] Therefore, in order to further improve the applicability of the existing knee flexion training device, we propose a rehabilitation nursing device that facilitates knee flexion training. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the existing rehabilitation training equipment in the prior art, such as the single function and the inability to adjust to the specific needs of different patients, and to propose a rehabilitation nursing device that facilitates knee flexion training.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A rehabilitation nursing device for facilitating knee flexion training is designed, comprising:

[0008] A chair body and two knee flexion units connected to the front end of the chair body;

[0009] The knee-flexing unit includes a swing arm rotatably connected to the chair body, and a footrest is installed at the bottom end of the swing arm;

[0010] A displacement mechanism is provided at the bottom of the chair body, a telescopic unit is connected between the displacement mechanism and the swing arm, and the displacement mechanism drives the swing arm to rotate through the telescopic unit;

[0011] A damping assembly is provided in the telescopic unit, and a locking assembly is also provided on the outside of the telescopic unit.

[0012] Furthermore, the chair body includes a base frame connected to wheels, and the upper end of the base frame is rotatably connected to a backrest;

[0013] The base frame is provided with a driving member for driving the backrest to rotate.

[0014] Furthermore, the displacement mechanism includes a motor fixed on the base frame, and a screw rod is fixedly connected to the shaft end of the motor;

[0015] A sliding seat is also slidably connected to the bottom rod of the base frame, and the sliding seat is threadedly connected to the screw rod.

[0016] Furthermore, the telescopic unit includes a sleeve that is pin-connected and rotated with the slide seat, and a guide rod that is pin-connected and rotated with the swing arm;

[0017] Two guide grooves are formed on the outer wall of the sleeve along the axial direction, and at least a portion of the damping assembly slides in the guide grooves.

[0018] Furthermore, the damping assembly includes a slide plate slidably connected to the sleeve, a spring is placed between the slide plate and the end of the guide rod, wherein locking shafts passing through the guide groove are fixed on both sides of the slide plate, and an adjustment ring sleeved on the outside of the sleeve is fixedly connected between the outer ends of the two locking shafts;

[0019] A plurality of clamping grooves are arranged at intervals on the sides of the guide groove, and the locking shaft is clamped in the clamping grooves.

[0020] Furthermore, the locking assembly includes a ring rotatably connected to the outside of the sleeve, and a notch is formed on the outside of the ring;

[0021] The outer side of the guide rod is fixedly connected with a limiting shaft, and the limiting shaft is slidably connected to the guide groove and passes through the notch.

[0022] Furthermore, a relief opening is provided in the inner ring of the circular ring, a protrusion is fixedly connected to the outer side of the sleeve, the protrusion is placed in the relief opening, and a compression spring is fixedly connected between the protrusion and the inner wall of the relief opening.

[0023] Furthermore, a spring rod assembly is provided on the outer side of the ring, and a positioning hole is provided on the outer side of the sleeve.

[0024] Furthermore, the swing arm includes a connecting rod, an adjusting rod is movably inserted at the bottom of the connecting rod, and the foot pedal is fixedly connected to the tail end of the adjusting rod, wherein a locking bolt is threadedly connected to the outer side of the connecting rod, and the end of the locking bolt abuts against the outer side of the adjusting rod.

[0025] Furthermore, a timer is detachably connected to the top of the chair body.

[0026] The present invention proposes a rehabilitation nursing device for facilitating knee flexion training, which has the following beneficial effects: the present invention adopts two independently controlled knee flexion units, which can adapt to the training needs of single or double legs during knee flexion training. At the same time, the damping component provided can provide a certain knee flexion damping force during the patient's active training process, and the resistance size is adjustable to meet the training needs of different patients. In the auxiliary mode, the displacement mechanism directly drives the knee flexion unit to rotate, and multiple training modes are provided, which greatly improves the applicability of the device.

[0027] In addition, in the present invention, by adopting a rotational connection between the backrest and the base frame, the angle of the backrest can be adjusted through the telescopic control of the driving member, thereby improving the formation of a suitable exercise angle during knee flexion training and enhancing the applicability of training. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The present invention is a three-dimensional Figure 1 ;

[0029] Figure 2 Schematic diagram of the driving member structure of the present invention;

[0030] Figure 3 The present invention is a three-dimensional Figure 2 ;

[0031] Figure 4 Schematic diagram of the displacement mechanism structure of the present invention;

[0032] Figure 5 It is a schematic diagram of the chassis structure of the present invention;

[0033] Figure 6 This is a schematic diagram of the telescopic unit structure of the present invention;

[0034] Figure 7 is a cross-sectional view of the telescopic unit of the present invention;

[0035] Figure 8 It is a schematic structural diagram of the damping assembly of the present invention;

[0036] Figure 9 It is a schematic structural diagram of the locking assembly of the present invention.

[0037] In the figure: 1. Chair body; 11. Wheel; 12. Base frame; 13. Backrest; 14. Driving part; 2. Knee flexion unit; 21. Swing arm; 211. Connecting rod; 212. Adjusting rod; 213. Locking bolt; 22. Footrest; 3. Displacement mechanism; 31. Motor; 32. Screw; 33. Slide; 4. Telescopic unit; 41. Sleeve; 42. Guide rod; 43. Guide groove; 44. Protrusion; 5. Damping assembly; 51. Slide plate; 52. Spring; 53. Locking shaft; 54. Adjusting ring; 55. Slot; 6. Locking assembly; 61. Ring; 62. Notch; 63. Limiting shaft; 64. Avoidance; 65. Compression spring; 66. Spring rod assembly; 67. Positioning hole; 7. Timer. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] Reference Figure 1-9 One embodiment of the present invention discloses a rehabilitation nursing device for facilitating knee flexion training, specifically comprising:

[0040] A chair body 1 and two knee-flexing units 2 connected to the front end of the chair body 1;

[0041] The knee flexion unit 2 includes a swing arm 21 rotatably connected to the chair body 1, and a footrest 22 is installed at the bottom end of the swing arm 21. Preferably, the footrest 22 in this embodiment is rotatably connected to the swing arm 21 to achieve support requirements for the soles of the feet at different angles. Of course, a bolt can also be threadedly connected to the footrest 22, and the position of the footrest 22 can be locked by the interference of the bolt with the swing arm 21. This method is a conventional method used by technicians in the field and will not be described in detail here.

[0042] Reference Figure 3 , wherein a displacement mechanism 3 is provided at the bottom of the chair body 1, a telescopic unit 4 is connected between the displacement mechanism 3 and the swing arm 21, and the displacement mechanism 3 drives the swing arm 21 to rotate through the telescopic unit 4;

[0043] A damping assembly 5 is provided in the telescopic unit 4 , and a locking assembly 6 is also provided on the outside of the telescopic unit 4 .

[0044] Reference Figure 2 In some embodiments, the chair body 1 of the present invention includes a base frame 12 connected to wheels 11, and the upper end of the base frame 12 is rotatably connected to a backrest 13. Specifically, in this embodiment, at least one of the wheels 11 is configured as a wheel set with a brake, so that the position can be maintained during training to improve the safety of knee flexion training;

[0045] Reference Figure 2 , the base frame 12 is provided with a driving member 14 for driving the backrest 13 to rotate. Specifically, the driving member 14 in this embodiment is configured as an electric push rod or a hydraulic cylinder, one end of which is pinned to the bottom of the base frame 12, and the telescopic end is pinned to the backrest 13. In this embodiment, the backrest 13 and the base frame 12 are connected in a rotating manner, and the angle of the backrest 13 can be adjusted by controlling the telescopic movement of the driving member 14, thereby improving the formation of a suitable exercise angle during knee flexion training and improving the applicability of training.

[0046] Reference Figure 4 、 Figure 5 Based on the above embodiment, the displacement mechanism 3 in this embodiment includes a motor 31 fixed to the base frame 12. Of course, in order to achieve independent control of the two swing arms 21, two displacement mechanisms 3 are provided in this embodiment to achieve independent control of the two swing arms 21, thereby achieving single-leg or double-leg knee flexion training. A screw rod 32 is fixedly connected to the shaft end of the motor 31.

[0047] A slide 33 is also slidably connected to the bottom rod of the base frame 12, and the slide 33 is threadedly connected to the screw rod 32. In addition, it should be noted that a support seat is fixedly installed at the end of the base frame 12 described in this embodiment, and the support seat is rotatably connected to the screw rod 32, so as to support the end of the screw rod 32.

[0048] That is to say, in the embodiment of the invention, the motor 31 is provided to drive the screw rod 32 to rotate. When the screw rod 32 rotates, the slide 33 is driven to move linearly on the bottom rod of the base frame 12, thereby realizing the position driving of the telescopic unit 4 and achieving the purpose of rotating control of the swing arm 21.

[0049] In summary, when the device of the present invention is in use, the patient sits on the chair body 1 with both feet placed on the footrests 22. At this time, by adopting the design of two displacement mechanisms 3, the rotation angle of the swing arm 21 is controlled by the telescopic unit 4 respectively, and the swing arm 21 drives the patient's calf to rotate, thereby achieving an auxiliary effect on knee flexion training and improving the convenience of training.

[0050] Reference Figure 6 、 Figure 7 Furthermore, the telescopic unit 4 of the present invention includes a sleeve 41 that is pin-connected and rotatable with the slide 33, and a guide rod 42 that is pin-connected and rotatable with the swing arm 21. Of course, one end of the guide rod 42 should be inserted into the inner side of the sleeve 41.

[0051] The outer wall of the sleeve 41 is provided with two guide grooves 43 along the axial direction, and the two guide grooves 43 are symmetrically distributed along the outer wall of the sleeve 41. At least part of the damping assembly 5 slides in the guide groove 43. In addition, the locking assembly 6 described in the present invention is arranged on the outside of the sleeve 41, which is used to lock and position the moving position of the guide rod 42.

[0052] Reference Figure 8 Preferably, the damping assembly 5 in this embodiment includes a slide plate 51 slidably connected to the sleeve 41, a spring 52 is placed between the slide plate 51 and the end of the guide rod 42, wherein locking shafts 53 passing through the guide groove 43 are fixed on both sides of the slide plate 51, and an adjustment ring 54 sleeved on the outside of the sleeve 41 is fixedly connected between the outer ends of the two locking shafts 53;

[0053] A plurality of slots 55 are provided at intervals on the sides of the guide slot 43 . The slots 55 described in this embodiment are preferably configured as L-shaped slots, which are used to lock the circumferential position of the locking shaft 53 after it is inserted. The locking shaft 53 is engaged in the slots 55 .

[0054] It should be noted that in the present invention, when the position of the slide plate 51 needs to be adjusted, the adjusting ring 54 is first pulled to one side and rotated. The adjusting ring 54 drives the locking shaft 53 to disengage from the slot 55. Thereafter, the position of the adjusting ring 54 can be slid back and forth. When it moves to the required position, the adjusting ring 54 is rotated to make the locking shaft 53 engage in the slot 55. The position of the slide plate 51 is changed by the adjusting ring 54 to achieve adjustment of different elastic counter-thrusts.

[0055] That is to say, in the present invention, the movable slide 51 is set to resist the spring 52 to generate a compressed damping force. According to Hooke's law F=-kx, when the effective length of the spring is compressed, the reverse thrust it generates is greater. Therefore, in this embodiment, the adjustment ring 54 is set to drive the slide 51 to move. After compressing the spring 52 to different lengths, different values ​​of reverse damping thrust can be generated to achieve adjustable damping force, which can adapt to different knee flexion forces, greatly improving the applicability of knee flexion training.

[0056] Reference Figure 9 It should be noted that, in order to lock the position of the guide rod 42 and ensure that when the motor 31 is working, the entire telescopic unit 4 can be kept as a fixed whole, thereby achieving stable driving of the swing arm 21, the locking assembly 6 in the present invention includes a ring 61 rotatably connected to the outside of the sleeve 41, and a notch 62 is formed on the outside of the ring 61;

[0057] A limiting shaft 63 is fixedly connected to the outer side of the guide rod 42 . The limiting shaft 63 is slidably connected to the guide groove 43 and passes through the notch 62 .

[0058] That is, the rotatable ring 61 provided in the present invention is used to lock the limit shaft 63 to achieve locking the position of the guide rod 42. It should be further explained that the ring 61 described in the present invention is a certain distance away from the end of the guide groove 43, so as to form a limit hole. When it is necessary to limit and fix the position of the guide rod 42, the ring 61 is rotated so that its notch 62 is opposite to the guide groove 43. At this time, the guide rod 42 is further pulled outward to make the limit shaft 63 slide through the ring 61 until it moves to the other side of the ring 61. Thereafter, the ring 61 can be reset to stop and limit the limit shaft 63, thereby keeping the position between the guide rod 42 and the sleeve 41 locked to form a whole.

[0059] Specifically, the present invention has two training modes, namely the auxiliary mode controlled by the motor 31 and the damping training mode operated subjectively by the patient. The specific operation process is as follows:

[0060] When in the assist mode, the patient sits on the chair body 1 and places both feet on the footrest 22. At this time, the guide rod 42 is pulled outward along the inner side of the sleeve 41, and the ring 61 is rotated so that the notch 62 is opposite to the guide groove 43. When the limiting shaft 63 on the guide rod 42 passes the ring 61, the ring 61 is reset so that the limiting shaft 63 is limited between the end of the guide groove 43 and the ring 61, so that the sleeve 41 and the guide rod 42 form a whole.

[0061] After that, the motor 31 controls the screw rod 32 to rotate to drive the slide 33 to move. The movement of the slide 33 is used to control the rotation of the entire telescopic unit 4, and then the rotation control of the swing arm 21 is realized. When the swing arm 21 rotates upward, the patient's calf is lifted, and vice versa. This reciprocating operation can complete the patient's knee flexion auxiliary operation. Of course, in this mode, the speed of the motor 31 and the start and stop can be changed to achieve controllable knee joint lifting speed, and the leg lifting angle can be adjusted and maintained.

[0062] When it is necessary to adjust to the damping training mode, the telescopic unit 4 is first moved to the front end through the displacement mechanism 3, and then the ring 61 is rotated so that its notch 62 is always opposite to the guide groove 43. At this time, since the guide rod 42 and the sleeve 41 are in a freely retractable state, the patient can subjectively bend the knee and achieve damping training through the reverse damping force generated by the spring 52. At the same time, since the telescopic length of the spring 52 can be adjusted, different damping training methods can be achieved to improve the applicability of the device.

[0063] In some embodiments, a avoidance opening 64 is provided in the inner circle of the circular ring 61 of the present invention, and a protrusion 44 is fixedly connected to the outer side of the sleeve 41, and the protrusion 44 is placed in the avoidance opening 64, wherein a compression spring 65 is fixedly connected between the protrusion 44 and the inner wall of the avoidance opening 64. The avoidance opening 64 and the protrusion 44 provided in the present invention are used to realize the rotation of the circular ring 61. The design of the compression spring 65 can reset the position of the circular ring 61 after rotation, thereby improving the convenience of operating the circular ring 61.

[0064] Of course, considering that in the damping training mode, the position of the ring 61 needs to always keep the notch 62 opposite to the guide groove 43, so in the present invention, a spring rod assembly 66 is provided on the outside of the ring 61, and a positioning hole 67 is provided on the outside of the sleeve 41. The spring rod assembly 66 includes a rod inserted into the ring 61 and a spring connected between the two. The positioning hole 67 is used to insert the locking rod, so as to achieve position locking of the ring 61.

[0065] That is, in the present invention, when the position of the ring 61 needs to be locked, the ring 61 is rotated and the rod end of the spring rod assembly 66 on its outer side is inserted into the interior of the positioning hole 67. The operation is simple and convenient.

[0066] In a preferred embodiment, the swing arm 21 in the present invention includes a connecting rod 211, and an adjusting rod 212 is movably inserted at the bottom of the connecting rod 211, and the foot pedal 22 is fixedly connected to the tail end of the adjusting rod 212, wherein a locking bolt 213 is threadedly connected to the outer side of the connecting rod 211, and the end of the locking bolt 213 abuts against the outer side of the adjusting rod 212, that is, the length of the swing arm 21 in the present invention is adjustable. The purpose of adopting this adjustment method is to adapt to the leg length of different patients, so as to ensure applicability to different patients.

[0067] It should be noted that, in order to record the knee flexion time, a timer 7 can be detachably connected to the top of the chair body 1 in the present invention. The timer 7 can directly adopt an electronic counter in the prior art, which can be connected to the chair body 1 through a strap. This method is a conventional means used by technicians in the field and will not be elaborated here.

[0068] In summary, the present invention adopts two independently controlled knee flexion units 2, which can adapt to the training needs of single or double legs during knee flexion training. At the same time, the damping component 5 can provide a certain knee flexion damping force during the patient's active training, and the resistance size is adjustable to meet the training needs of different patients. In the auxiliary mode, the displacement mechanism 3 directly drives the knee flexion unit 2 to rotate, and multiple training modes are provided, which greatly improves the applicability of the device.

[0069] In addition, in the present invention, by adopting a rotational connection between the backrest 13 and the base frame 12, the angle of the backrest 13 can be adjusted by controlling the extension and contraction of the driving member 14, thereby improving the formation of a suitable exercise angle during knee flexion training and improving the applicability of training.

[0070] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A rehabilitation nursing device for facilitating knee flexion training, characterized in that: include: A chair body (1) and two knee-flexion units (2) connected to the front end of the chair body (1); The knee-flexing unit (2) comprises a swing arm (21) rotatably connected to the chair body (1), and a footrest (22) is mounted at the bottom end of the swing arm (21); A displacement mechanism (3) is provided at the bottom of the chair body (1), a telescopic unit (4) is connected between the displacement mechanism (3) and the swing arm (21), and the displacement mechanism (3) drives the swing arm (21) to rotate via the telescopic unit (4); A damping assembly (5) is provided in the telescopic unit (4), and a locking assembly (6) is also provided on the outside of the telescopic unit (4). The chair body (1) includes a base frame (12) connected to wheels (11), and the upper end of the base frame (12) is rotatably connected to a backrest (13). A driving member (14) for driving the backrest (13) to rotate is provided on the base frame (12), and the displacement mechanism (3) includes a motor (31) fixed to the base frame (12), and a screw rod (32) is fixedly connected to the shaft end of the motor (31); A slide seat (33) is also slidably connected to the bottom rod of the base frame (12), and the slide seat (33) is threadedly connected to the screw rod (32). The telescopic unit (4) includes a sleeve (41) that is pin-connected and rotatable with the slide seat (33), and a guide rod (42) that is pin-connected and rotatable with the swing arm (21). The outer wall of the sleeve (41) is provided with two guide grooves (43) along the axial direction, and at least a portion of the damping assembly (5) slides in the guide grooves (43). The damping assembly (5) comprises a slide plate (51) slidably connected to the sleeve (41), and a spring (52) is placed between the slide plate (51) and the end of the guide rod (42). Locking shafts (53) passing through the guide grooves (43) are fixed on both sides of the slide plate (51), and an adjusting ring (54) sleeved on the outside of the sleeve (41) is fixedly connected between the outer ends of the two locking shafts (53); A plurality of clamping grooves (55) are provided at intervals on the side of the guide groove (43), and the locking shaft (53) is clamped in the clamping grooves (55).

2. The rehabilitation nursing device for facilitating knee flexion training according to claim 1, characterized in that: The locking assembly (6) includes a circular ring (61) rotatably connected to the outside of the sleeve (41), and a notch (62) is provided on the outside of the circular ring (61); The outer side of the guide rod (42) is fixedly connected to a limiting shaft (63), and the limiting shaft (63) is slidably connected to the guide groove (43) and penetrates the notch (62).

3. The rehabilitation nursing device for facilitating knee flexion training according to claim 2, characterized in that: An escape opening (64) is provided in the inner ring of the circular ring (61), a protrusion (44) is fixedly connected to the outer side of the sleeve (41), and the protrusion (44) is placed in the escape opening (64), wherein a compression spring (65) is fixedly connected between the protrusion (44) and the inner wall of the escape opening (64).

4. The rehabilitation nursing device for facilitating knee flexion training according to claim 3, characterized in that: A spring rod assembly (66) is provided on the outside of the circular ring (61), and a positioning hole (67) is provided on the outside of the sleeve (41).

5. A rehabilitation nursing device for facilitating knee flexion training according to any one of claims 1 to 4, characterized in that: The swing arm (21) includes a connecting rod (211), an adjusting rod (212) is movably inserted at the bottom of the connecting rod (211), and the footrest (22) is fixedly connected to the tail end of the adjusting rod (212), wherein a locking bolt (213) is threadedly connected to the outer side of the connecting rod (211), and the end of the locking bolt (213) abuts against the outer side of the adjusting rod (212).

6. A rehabilitation nursing device for facilitating knee flexion training according to any one of claims 1 to 4, characterized in that: A timer (7) is also detachably connected to the top of the chair body (1).

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