Nursing base plate for knee joint and hip joint patients

Abstract

The invention relates to the field of medical nursing instruments for patients with knee joints and hip joints, and discloses a nursing base plate for patients with knee joints and hip joints, which comprises a loading mechanism, a main drive adjusting mechanism is arranged in the loading mechanism, and a linkage adjusting mechanism is arranged on the outer side of the middle of the main drive adjusting mechanism. And a positioning and clamping mechanism is arranged on the outer side of the rear section of the main drive adjusting mechanism. According to the multi-angle adjustable dynamic supporting device, through cooperation of the bottom frame plate, the grooves, the sliding grooves, the back cushion plate, the leaning and lying plate, the seat cushion plate, the thigh cushion plate, the shank cushion plate, the side supporting plate, the cushion supporting frame, the main drive adjusting mechanism and the linkage adjusting mechanism, the adaptability and functionality of the multi-angle adjustable dynamic supporting device are improved, the multi-angle adjustable dynamic supporting device has multi-angle adjustable dynamic supporting, potential safety hazards are reduced, and the practicability of the multi-angle adjustable dynamic supporting device is improved. Through mutual cooperation of a through groove, a through opening, a positioning sliding barrel and a positioning clamping mechanism, a nursing base plate locking mechanism is provided, accidental displacement of the device is prevented, and secondary injury to the patient is avoided.

Description

Technical Field

[0001] This invention relates to the field of medical care devices for patients with knee and hip joint problems, and more particularly to a care pad for patients with knee and hip joint problems. Background Technology

[0002] Knee replacement surgery (TKA) and hip replacement surgery (THA) are routine surgeries for treating severe osteoarthritis, rheumatoid arthritis, and post-traumatic joint dysfunction. Postoperatively, patients need to maintain specific positions for a long time to promote wound healing, prevent prosthesis dislocation, and reduce pain. The clinical rehabilitation requirements are significantly different, which is why nursing pads for knee and hip joint patients are needed.

[0003] Traditional nursing pads for knee and hip joint patients have limited functionality and poor adaptability. They only provide static support and cannot dynamically adjust abduction or flexion angles. They also pose certain safety hazards, lacking lateral restraint mechanisms. Hip joint patients are prone to prosthesis dislocation due to lower limb adduction when changing positions. The fixed angle of the leg support plate cannot adapt to the dynamic flexion requirements during knee joint rehabilitation, affecting functional recovery. The separation of the back and leg adjustment mechanisms requires multiple adjustments, increasing patient discomfort and nursing burden. In addition, most existing nursing pads for knee and hip joint patients lack locking mechanisms and generally lack reliable position locking functions. When the patient moves or changes position, the support structure is prone to displacement due to gravity or external forces, posing a risk of secondary injury. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a nursing pad for patients with knee and hip joint problems. This innovative nursing pad can drive multiple mechanisms to work together through a single motor, accurately meeting the differentiated rehabilitation positioning needs after hip and knee joint surgery. It integrates automated lateral support and a reliable locking mechanism, reducing the complexity of nursing operations and medical risks.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A nursing pad for patients with knee and hip joints includes a loading mechanism, wherein a main drive adjustment mechanism is provided inside the loading mechanism, a linkage adjustment mechanism is provided on the outer side of the middle part of the main drive adjustment mechanism, and a positioning and locking mechanism is provided on the outer side of the rear section of the main drive adjustment mechanism. The loading mechanism includes a bottom frame plate and two sliding grooves respectively opened on the inner walls of the left and right sides of the rear end of the bottom frame plate. Two openings are evenly opened on the left and right sides of the middle section of the bottom frame plate. The main drive adjustment mechanism includes a dual-head motor fixedly connected to the middle of the inner bottom wall of the middle section of the bottom frame plate, an auxiliary rotating rod fixedly connected to the front output end of the dual-head motor, and a main rotating rod fixedly connected to the rear output end of the dual-head motor. The outer wall of the rear section of the main rotating rod is provided with a main thread groove, the outer wall of the front section of the auxiliary rotating rod is provided with an auxiliary thread groove, a moving plate is threadedly connected to the outer wall of the main thread groove, a moving inclined block is threadedly connected to the outer wall of the auxiliary thread groove, and a fixed inclined block is rotatably connected to the middle outer wall of the auxiliary rotating rod. Furthermore, two positioning slide cylinders are evenly fixedly connected to the inner walls of the left and right sides of the middle section of the bottom frame plate, a through groove is opened on the right side of the rear section of the bottom frame plate, a groove is opened in the middle of the inner bottom wall of the rear section of the bottom frame plate, the position of the positioning slide cylinder corresponds to the position of the through opening, and a top block is fixedly connected to the outer wall of the middle section of the main rotating rod, the position of the top block corresponds to the position of the groove. Furthermore, a cushion frame is fixedly connected to the middle of the inner bottom wall of the middle section of the bottom frame plate, a seat cushion plate is fixedly connected to the upper side of the cushion frame, a reclining plate is rotatably connected to the front end of the seat cushion plate, a backrest plate is rotatably connected to the front end of the reclining plate, a thigh pad is rotatably connected to the rear end of the seat cushion plate, a calf pad is rotatably connected to the rear end of the thigh pad, a movable inclined block is slidably connected to the lower middle of the backrest plate, and a fixed inclined block is fixedly connected to the inner wall of the front middle of the reclining plate. Furthermore, the positioning and locking mechanism is located on the lower side of the thigh pad, and the left and right ends of the seat pad are rotatably connected to side support plates. The linkage adjustment mechanism is located on the lower side of the two side support plates and the seat pad. The lower side of the middle rear end of the calf pad is rotatably connected to the upper end of the moving plate. The top block is located on the lower side between the thigh pad and the calf pad. The left and right sides of the rear end of the calf pad are fixedly connected to fixing blocks, and the two fixing blocks are respectively located in the middle of the two slide grooves. Furthermore, the linkage adjustment mechanism includes two bottom support adjustment components that are fixedly connected to the lower parts of the left and right ends of the support frame, and two linkage retraction and extension components that are fixedly connected to the main rotating rod near the end of the dual-head motor. The positions of the two linkage retraction and extension components are symmetrical to each other. Furthermore, the two base adjustment components include base plates fixedly connected to the left and right ends of the lower part of the cushion frame, and two spring rods fixedly connected to the upper middle part of the two base plates at the end away from the cushion frame. Support columns are fixedly connected to the upper sides of the two corners at the end away from the cushion frame of the two base plates. A rotating shaft is fixedly connected to the top of the spring rod. A rotating groove is opened in the lower middle part of the end away from the seat cushion of the two side support plates. The two rotating shafts are rotatably connected inside the two rotating grooves. The height of the support column and the thickness of the base plate are equal to the height of the cushion frame. Furthermore, the two linked retraction and extension components include two reels fixedly connected to the main rotating rod near the end of the dual-head motor and two fixed supports fixedly connected to the upper side of the base plate near the end of the pad support frame. The upper middle part of the upper end of each of the two fixed supports is rotatably connected to a rotating wheel. The outer wall of each of the two reels is connected to the lower side of the corresponding side support plate by a connecting line passing around the rotating wheel on the corresponding side. The lower left and right sides of the front end of the inner wall of the pad support frame are provided with through holes, and the middle part of the two connecting lines is respectively set in the middle of the two through holes. Furthermore, the positioning and locking mechanism includes two lead screws rotatably connected to the inner walls of the left and right sides of the bottom frame plate, two bevel gears fixedly connected to the ends of the two lead screws near the main rotating rod, and two locking plugs threadedly connected to the outer walls of the ends of the two lead screws near the main rotating rod. The front and rear parts of the ends of the two locking plugs away from the main rotating rod correspond to the positions of two openings on the corresponding side, and the front and rear parts of the ends of the two locking plugs away from the main rotating rod are slidably connected to the middle of the two positioning slide cylinders on the corresponding side. Furthermore, a sleeve is slidably connected to the outer wall of the middle part of the main rotating rod. A bevel tooth is fixedly connected to the end of the sleeve near the second bevel tooth. A control rod is rotatably connected to the end of the sleeve away from the second bevel tooth. The end of the control rod away from the sleeve is located in the middle of the through groove. An anti-disengagement torsion block is fixedly connected to the end of the control rod away from the sleeve. The sleeve is located between the main thread groove and the two second bevel teeth. The first bevel tooth meshes with the two second bevel teeth.

[0006] The present invention has the following beneficial effects: In this invention, the combination of a base frame, groove, slide, backrest, reclining board, seat cushion, thigh pad, calf pad, side support, pad frame, main drive adjustment mechanism, and linkage adjustment mechanism alleviates the problems of traditional nursing pads for knee and hip joint patients, which are characterized by limited functionality, poor adaptability, static support, inability to dynamically adjust abduction or flexion angles, certain safety hazards, lack of lateral restraint mechanism, and prosthesis dislocation due to lower limb adduction when hip joint patients change positions. The fixed angle of the leg support plate cannot adapt to the dynamically changing flexion requirements during knee joint rehabilitation, affecting functional recovery. Furthermore, the separation of the back and leg adjustment mechanisms requires multiple adjustments, increasing patient discomfort and nursing burden.

[0007] In this invention, the through groove, through opening, positioning slide and positioning locking mechanism work together to alleviate the problem that most existing knee and hip joint patient care pads on the market lack a locking mechanism and generally lack a reliable body position locking function. When the patient moves or adjusts their body position, the support structure is prone to displacement due to gravity or external force, which poses a risk of secondary injury. Attached Figure Description

[0008] Figure 1 This is a perspective view of a nursing pad for patients with knee and hip joints proposed in this invention. Figure 2 This is a schematic diagram of the structure of the bottom frame plate of a nursing pad for patients with knee and hip joints proposed in this invention; Figure 3 This is a schematic diagram of the main drive adjustment mechanism for a patient care pad for the knee and hip joints proposed in this invention. Figure 4 This is a schematic diagram of the structure of a seat cushion for knee and hip joint patient care pads proposed in this invention; Figure 5 This is a schematic diagram of the fixing block of a patient care pad for the knee and hip joints proposed in this invention; Figure 6 This is a schematic diagram of the support frame of a nursing pad for patients with knee and hip joints proposed in this invention. Figure 7 This is a schematic diagram of the positioning and securing mechanism for a patient care pad for the knee and hip joints proposed in this invention. Figure 8 This is a schematic diagram of the linkage adjustment mechanism for a patient care pad for the knee and hip joints proposed in this invention. Figure 9 This is a schematic diagram of the rotating groove structure of a nursing pad for patients with knee and hip joints proposed in this invention; Figure 10 This is a schematic diagram of the structure of a roller for a patient care pad for the knee and hip joints proposed in this invention; Figure 11 This is a schematic diagram of the sleeve structure of a nursing pad for patients with knee and hip joints proposed in this invention; Figure 12 This is a schematic diagram of the top block of a nursing pad for patients with knee and hip joints proposed in this invention.

[0009] Legend: 1. Loading mechanism; 101. Base frame plate; 102. Groove; 103. Through groove; 104. Through opening; 105. Positioning slide cylinder; 106. Slide groove; 2. Headrest plate; 3. Reclining plate; 4. Seat cushion plate; 5. Thigh pad plate; 6. Calf pad plate; 7. Main drive adjustment mechanism; 71. Dual-head motor; 72. Main rotating rod; 73. Auxiliary rotating rod; 74. Main threaded groove; 75. Top block; 76. Auxiliary threaded groove; 77. Fixed inclined block; 78. Moving inclined block; 79. Moving plate; 8. Linkage adjustment mechanism; 81. Base support adjustment assembly; 811. Base plate; 812. Support column; 813. Spring rod; 814. Rotary shaft; 82. Linkage retraction assembly; 821. Roller; 822. Fixed support; 823. Rotary wheel; 824. Connecting line; 9. Positioning and locking mechanism; 91. Sleeve; 92. Bevel tooth one; 93. Control rod; 94. Anti-detachment torsion block; 95. Lead screw; 96. Bevel tooth two; 97. Clip insert; 10. Side support plate; 11. Fixing block; 12. Pad support frame; 13. Through hole; 14. Rotary groove. Detailed Implementation

[0010] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0011] Reference Figure 1-12 An embodiment of the present invention provides a nursing pad for patients with knee and hip joints, including a loading mechanism 1. The loading mechanism 1 is provided with a main drive adjustment mechanism 7 inside. A linkage adjustment mechanism 8 is provided on the outer side of the middle part of the main drive adjustment mechanism 7. A positioning and locking mechanism 9 is provided on the outer side of the rear section of the main drive adjustment mechanism 7. The nursing pad is driven by a dual-head motor 71 to drive the main and auxiliary rotating rods to rotate synchronously, so as to realize the full-process coordinated control of back angle adjustment, leg flexion and extension lifting, side wing support deployment and body position locking. The loading mechanism 1 includes a bottom frame plate 101 and two grooves 106 respectively opened on the inner walls of the left and right sides of the rear end of the bottom frame plate 101. Two openings 104 are evenly opened on the left and right sides of the middle section of the bottom frame plate 101. The main drive adjustment mechanism 7 includes a dual-head motor 71 fixedly connected to the middle of the inner bottom wall of the middle section of the bottom frame plate 101, a secondary rotating rod 73 fixedly connected to the front output end of the dual-head motor 71, and a main rotating rod 72 fixedly connected to the rear output end of the dual-head motor 71. The outer wall of the rear section of the main rotating rod 72 is provided with a main thread groove 74, and the outer wall of the front section of the secondary rotating rod 73 is provided with a secondary thread groove 76. A moving plate 79 is threadedly connected to the outer wall of the main thread groove 74, and a moving inclined block 78 is threadedly connected to the outer wall of the secondary thread groove 76. A fixed inclined block is rotatably connected to the outer wall of the middle section of the secondary rotating rod 73. 77. When the dual-head motor 71 starts rotating in the forward direction, it drives the auxiliary rotating rod 73 to rotate clockwise, which drives the threaded movable inclined block 78 to move forward along the auxiliary thread groove 76. The inclined surface of the movable inclined block 78 contacts the fixed inclined block 77 fixed at the front end of the reclining board 3, generating a vertical component force, which pushes the reclining board 3 to rise around its hinge point with the seat cushion board 4. At the same time, the movable inclined block 78 pushes the lower surface of the headrest board 2, causing the headrest board 2 to tilt accordingly, maintaining a natural transition of the neck and back curve. When the dual-head motor 71 reverses, the movable inclined block 78 moves backward, and the back assembly is smoothly reset under the action of gravity.

[0012] Two positioning slide cylinders 105 are evenly fixedly connected to the inner walls of the left and right sides of the middle section of the bottom frame plate 101. A through groove 103 is opened on the right side of the rear section of the bottom frame plate 101. A groove 102 is opened in the middle of the inner bottom wall of the rear section of the bottom frame plate 101. The position of the positioning slide cylinder 105 corresponds to the position of the through opening 104. A top block 75 is fixedly connected to the outer wall of the middle section of the main rotating rod 72. The position of the top block 75 corresponds to the position of the groove 102.

[0013] A cushion frame 12 is fixedly connected to the middle of the inner bottom wall of the middle section of the bottom frame plate 101. A seat cushion plate 4 is fixedly connected to the upper side of the cushion frame 12. A reclining plate 3 is rotatably connected to the front end of the seat cushion plate 4. A backrest plate 2 is rotatably connected to the front end of the reclining plate 3. A thigh pad 5 is rotatably connected to the rear end of the seat cushion plate 4. A calf pad 6 is rotatably connected to the rear end of the thigh pad 5. A movable inclined block 78 is slidably connected to the lower middle of the backrest plate 2. A fixed inclined block 77 is fixedly connected to the inner wall of the front middle of the reclining plate 3.

[0014] The positioning and locking mechanism 9 is located on the lower side of the thigh pad 5. Side support plates 10 are rotatably connected to both ends of the seat cushion 4. The linkage adjustment mechanism 8 is located on the lower side of the two side support plates 10 and the seat cushion 4. The lower rear end of the calf pad 6 is rotatably connected to the upper end of the moving plate 79. The top block 75 is located on the lower side between the thigh pad 5 and the calf pad 6. Fixing blocks 11 are fixedly connected to both the left and right sides of the rear end of the calf pad 6. The two fixing blocks 11 are respectively located in the middle of the two sliding grooves 106. The head motor 71 synchronously drives the main rotating rod 72 to rotate clockwise, causing the moving plate 79 to move backward along the main thread groove 74. The moving plate 79 pushes the rear end of the lower leg pad 6, which is hinged to it, to lift up, so that the patient's lower leg is raised. The top block 75 in the middle of the main rotating rod 72 moves upward with the rotation, lifting the hinge between the thigh pad 5 and the lower leg pad 6, so that the knee is lifted up and precise flexion is achieved. The fixing block 11 at the rear end of the lower leg pad 6 slides along the slide groove 106 of the bottom frame plate 101 to ensure the stability of the movement trajectory and avoid lateral deviation.

[0015] The linkage adjustment mechanism 8 includes two bottom support adjustment components 81 that are fixedly connected to the lower part of the left and right ends of the support frame 12, and two linkage retraction components 82 that are fixedly connected to the main rotating rod 72 near the end of the dual-head motor 71. The positions of the two linkage retraction components 82 are symmetrical to each other.

[0016] The two base adjustment components 81 include base plates 811 fixedly connected to the left and right ends of the lower part of the cushion frame 12, and two spring rods 813 fixedly connected to the upper middle part of the two base plates 811 away from the cushion frame 12. Support columns 812 are fixedly connected to the upper sides of the two corners of the two base plates 811 away from the cushion frame 12. A rotating shaft 814 is fixedly connected to the top of the spring rod 813. A rotating groove 14 is opened in the lower middle part of the two side support plates 10 away from the seat cushion plate 4. The two rotating shafts 814 are rotatably connected to the inside of the two rotating grooves 14. The height of the support column 812 and the thickness of the base plate 811 are equal to the height of the cushion frame 12.

[0017] The two linked retraction components 82 include two reels 821 fixedly connected to the main rotating rod 72 near the end of the dual-head motor 71, and two fixed supports 822 fixedly connected to the upper side of the base plate 811 near the end of the pad frame 12. A rotating wheel 823 is rotatably connected to the upper center of each of the two fixed supports 822. The outer walls of the two reels 821 are connected to the lower side of the corresponding side support plate 10 via a connecting line 824 that passes around the corresponding side wheel 823. Through holes 13 are provided on both the left and right sides of the lower front end of the inner wall of the pad frame 12. The middle portions of the two connecting lines 824 are respectively located in the middle of the two through holes 13. The rotation of the main rotating rod 72 drives the winding wheel 821 to rotate, loosening the connecting lines 824. Guided by the through holes 13, the connecting lines 824 release the traction on the lower side of the opposite support plate 10. The spring rod 813 rebounds, pushing the side support plate 10 to rotate upward around the rotating shaft 814 to the abduction position, which meets the requirements for preventing dislocation after hip joint surgery. When the dual-head motor 71 reverses, the winding wheel 821 winds up the connecting lines, and the side support plate 10 compresses the spring rod 813 to retract and reset. The support column 812 provides bottom support to prevent overload.

[0018] The positioning and locking mechanism 9 includes two lead screws 95 that are rotatably connected to the inner walls of the left and right sides of the bottom frame plate 101, two bevel gears 96 that are fixedly connected to the ends of the two lead screws 95 near the main rotating rod 72, and two locking plugs 97 that are threaded to the outer walls of the ends of the two lead screws 95 near the main rotating rod 72. The front and rear parts of the ends of the two locking plugs 97 away from the main rotating rod 72 correspond to the positions of the two openings 104 on the corresponding side. The front and rear parts of the ends of the two locking plugs 97 away from the main rotating rod 72 are slidably connected to the middle of the two positioning slide cylinders 105 on the corresponding side.

[0019] A sleeve 91 is slidably connected to the outer wall of the middle part of the main rotating rod 72. A bevel gear 92 is fixedly connected to the end of the sleeve 91 near the second bevel gear 96. A control rod 93 is rotatably connected to the end of the sleeve 91 away from the second bevel gear 96. The end of the control rod 93 away from the sleeve 91 is located in the middle of the through groove 103. An anti-disengagement torsion block 94 is fixedly connected to the end of the control rod 93 away from the sleeve 91. The sleeve 91 is positioned between the main thread groove 74 and the two second bevel gears 96. The first bevel gear 92 meshes with the two second bevel gears 96. By sliding the control rod 93 forward through the anti-disengagement torsion block 94, the sleeve 91 slides along the main rotating rod 72, driving the first bevel gear 92... 2. Engages with two bevel teeth 96. The power of the main rotating rod 72 is transmitted to the lead screw 95 through the bevel tooth assembly, driving the locking plug 97 to slide outward along the positioning slide cylinder 105. It then connects with the pre-set holes on both sides of the patient's bed position through the opening 104 on the lower side of the thigh pad 5, forming a mechanical interlock. Afterward, slide the control rod 93 backward to disengage the bevel tooth 92 from the two bevel teeth 96, thus preventing accidental displacement of the equipment during use. When the equipment needs to be disassembled, slide the control rod 93 forward again to engage the bevel tooth 92 with the two bevel teeth 96. Reversing the main rotating rod 72 will allow the locking plug 97 to exit the opening 104.

[0020] Working Principle: This nursing pad uses a dual-head motor 71 to drive the main and auxiliary rotating rods to rotate synchronously, achieving coordinated control of the entire process, including back angle adjustment, leg flexion and extension, side wing support deployment, and body position locking. When the dual-head motor 71 starts rotating forward, it drives the auxiliary rotating rod 73 to rotate clockwise, causing the threaded movable inclined block 78 to move forward along the auxiliary threaded groove 76. The inclined surface of the movable inclined block 78 contacts the fixed inclined block 77 fixed to the front end of the reclining board 3, generating a vertical force that pushes the reclining board 3 to rise around its hinge point with the seat cushion 4. Simultaneously, the movable inclined block 78 pushes against the lower surface of the backrest board 2, causing the backrest board 2 to tilt accordingly, maintaining a natural transition of the neck and back curve. When the dual-head motor 71 rotates in reverse, the movable inclined block 78 moves backward, and the backrest assembly... Under the action of force, the patient smoothly resets. The dual-head motor 71 synchronously drives the main rotating rod 72 to rotate clockwise, causing the moving plate 79 to move backward along the main thread groove 74. The moving plate 79 pushes the rear end of the calf pad 6, which is hinged to it, to lift up, thus raising the patient's calf. The top block 75 in the middle of the main rotating rod 72 moves upward with the rotation, lifting the hinge between the thigh pad 5 and the calf pad 6, thus lifting the knee and achieving precise flexion to meet the needs of the postoperative rehabilitation stage. This achieves a dual lifting mechanism. The fixing block 11 at the rear end of the calf pad 6 slides along the slide groove 106 of the bottom frame plate 101 to ensure stable movement trajectory and avoid lateral deviation. The rotation of the main rotating rod 72 drives the roller 821 to rotate, loosening the connecting line 824. Guided through the through hole 13, the connecting line 82... 4. Release the traction on the lower side of the opposite support plate 10, the spring rod 813 rebounds, pushing the side support plate 10 to rotate upward around the pivot 814 to the abduction position, which meets the requirements for preventing dislocation after hip joint surgery. When the dual-head motor 71 reverses, the winding wheel 821 winds up the connecting line, the side support plate 10 compresses the spring rod 813 and returns to its original position, the support column 812 provides bottom support to prevent overload, and the sleeve 91 slides along the main rotating rod 72 by sliding the control rod 93 forward through the anti-dislocation torsion block 94, which drives the bevel gear 1 92 to mesh with the two bevel gears 2 96. The power of the main rotating rod 72 is transmitted to the lead screw 95 through the bevel gear group, and the drive plug 97 slides outward along the positioning slide cylinder 105, and is inserted into the pre-set holes on both sides of the patient's bed position through the opening 104 on the lower side of the thigh pad 5. A mechanical interlock is formed. Then, slide the control lever 93 backward to disengage the first bevel tooth 92 from the two second bevel teeth 96, thus preventing accidental displacement during use. When disassembling the equipment, slide the control lever 93 forward again to engage the first bevel tooth 92 with the two second bevel teeth 96. Reversing the main rotating lever 72 will allow the locking plug 97 to exit the through-hole 104. The dual-head motor 71, with a single power source, synchronously controls the three sets of actions: back lifting, leg flexion, and side wing deployment, eliminating coordination errors of multiple motors. The groove 102 accommodates the top block 75 when the legs are fully extended to prevent overextension damage. The positioning slide 105 guides the precise insertion and removal of the locking plug 97 to avoid misoperation. The anti-disengagement twist block 94 ensures that the control lever 93 slides stably within the through-slot 103.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A patient care pad for knee and hip joints, comprising a loading mechanism (1), characterized in that: The loading mechanism (1) is provided with a main drive adjustment mechanism (7) inside, a linkage adjustment mechanism (8) is provided on the outer side of the middle part of the main drive adjustment mechanism (7), and a positioning and locking mechanism (9) is provided on the outer side of the rear section of the main drive adjustment mechanism (7). The loading mechanism (1) includes a bottom frame plate (101) and two grooves (106) respectively opened on the inner walls of the left and right sides of the rear end of the bottom frame plate (101). Two openings (104) are evenly opened on the left and right sides of the middle section of the bottom frame plate (101). The main drive adjustment mechanism (7) includes a double-headed motor (71) fixedly connected to the middle of the inner bottom wall of the middle section of the bottom frame plate (101), an auxiliary rotating rod (73) fixedly connected to the front output end of the double-headed motor (71), and a main rotating rod (72) fixedly connected to the rear output end of the double-headed motor (71). The outer wall of the rear section of the main rotating rod (72) is provided with a main thread groove (74), the outer wall of the front section of the auxiliary rotating rod (73) is provided with an auxiliary thread groove (76), the outer wall of the main thread groove (74) is threadedly connected with a moving plate (79), the outer wall of the auxiliary thread groove (76) is threadedly connected with a moving inclined block (78), and the outer wall of the middle section of the auxiliary rotating rod (73) is rotatably connected with a fixed inclined block (77).

2. The nursing pad for patients with knee and hip joints according to claim 1, characterized in that: Two positioning slide cylinders (105) are evenly fixedly connected to the inner walls of the left and right sides of the middle section of the bottom frame plate (101). A through groove (103) is opened on the right side of the rear section of the bottom frame plate (101). A groove (102) is opened in the middle of the inner bottom wall of the rear section of the bottom frame plate (101). The position of the positioning slide cylinder (105) corresponds to the position of the through opening (104). A top block (75) is fixedly connected to the outer wall of the middle part of the main rotating rod (72). The position of the top block (75) corresponds to the position of the groove (102).

3. A nursing pad for patients with knee and hip joints according to claim 2, characterized in that: A cushion frame (12) is fixedly connected to the middle of the inner bottom wall of the middle section of the bottom frame plate (101). A seat cushion plate (4) is fixedly connected to the upper side of the cushion frame (12). A reclining plate (3) is rotatably connected to the front end of the seat cushion plate (4). A backrest plate (2) is rotatably connected to the front end of the reclining plate (3). A thigh pad (5) is rotatably connected to the rear end of the seat cushion plate (4). A calf pad (6) is rotatably connected to the rear end of the thigh pad (5). A movable inclined block (78) is slidably connected to the lower middle of the backrest plate (2). A fixed inclined block (77) is fixedly connected to the inner wall of the middle front end of the reclining plate (3).

4. A nursing pad for patients with knee and hip joints according to claim 3, characterized in that: The positioning and locking mechanism (9) is located on the lower side of the thigh pad (5). The left and right ends of the seat pad (4) are rotatably connected to the side support plate (10). The linkage adjustment mechanism (8) is located on the lower side of the two side support plates (10) and the seat pad (4). The lower side of the middle rear end of the calf pad (6) is rotatably connected to the upper end of the moving plate (79). The top block (75) is located on the lower side between the thigh pad (5) and the calf pad (6). The left and right sides of the rear end of the calf pad (6) are fixedly connected to the fixing blocks (11). The two fixing blocks (11) are respectively located in the middle of the two slides (106).

5. A nursing pad for patients with knee and hip joints according to claim 4, characterized in that: The linkage adjustment mechanism (8) includes two bottom support adjustment components (81) fixedly connected to the lower left and right ends of the pad support frame (12) and two linkage retraction components (82) fixedly connected to the main rotating rod (72) near the end of the double-head motor (71). The positions of the two linkage retraction components (82) are symmetrical to each other.

6. A nursing pad for patients with knee and hip joints according to claim 5, characterized in that: The two base adjustment components (81) include base plates (811) fixedly connected to the left and right ends of the lower part of the cushion frame (12) and two spring rods (813) fixedly connected to the upper middle part of the two base plates (811) away from the cushion frame (12). The upper sides of the two corners of the two base plates (811) away from the cushion frame (12) are fixedly connected to the support column (812). The top of the spring rod (813) is fixedly connected to the rotating shaft (814). The lower middle part of the two side support plates (10) away from the seat cushion plate (4) is provided with a rotating groove (14). The two rotating shafts (814) are rotatably connected inside the two rotating grooves (14). The height of the support column (812) and the thickness of the base plate (811) are equal to the height of the cushion frame (12).

7. A nursing pad for patients with knee and hip joints according to claim 6, characterized in that: The two linkage retraction components (82) include two reels (821) fixedly connected to the main rotating rod (72) near the end of the double-head motor (71) and two fixed supports (822) fixedly connected to the upper side of the bottom plate (811) near the end of the pad support frame (12). The upper middle part of the two fixed supports (822) is rotatably connected to a rotating wheel (823). The outer wall of the two reels (821) is connected to the lower side of the corresponding side support plate (10) by a connecting line (824) passing around the rotating wheel (823) on the corresponding side. The lower left and right sides of the inner wall of the pad support frame (12) are provided with through holes (13). The middle part of the two connecting lines (824) is respectively set in the middle of the two through holes (13).

8. A nursing pad for patients with knee and hip joints according to claim 7, characterized in that: The positioning and locking mechanism (9) includes two lead screws (95) rotatably connected to the inner walls of the left and right sides of the bottom frame plate (101), two bevel teeth (96) fixedly connected to the ends of the two lead screws (95) near the main rotating rod (72), and two locking plugs (97) threadedly connected to the outer walls of the ends of the two lead screws (95) near the main rotating rod (72). The front and rear parts of the ends of the two locking plugs (97) away from the main rotating rod (72) correspond to the positions of the two openings (104) on the corresponding side. The front and rear parts of the ends of the two locking plugs (97) away from the main rotating rod (72) are slidably connected to the middle of the two positioning slide cylinders (105) on the corresponding side.

9. A nursing pad for patients with knee and hip joints according to claim 8, characterized in that: A sleeve (91) is slidably connected to the outer wall of the middle part of the main rotating rod (72). A bevel tooth (92) is fixedly connected to one end of the sleeve (91) near the second bevel tooth (96). A control rod (93) is rotatably connected to one end of the sleeve (91) away from the second bevel tooth (96). The end of the control rod (93) away from the sleeve (91) is located in the middle of the through groove (103). An anti-disengagement twist block (94) is fixedly connected to one end of the control rod (93) away from the sleeve (91). The sleeve (91) is located between the main thread groove (74) and the two second bevel teeth (96). The first bevel tooth (92) meshes with the two second bevel teeth (96).

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