Device for clinostatism lower limb movement of hemodialysis patient in dialysis process

Abstract

The invention discloses a device for clinostatism lower limb movement in the dialysis process of a hemodialysis patient, relates to the technical field of hemodialysis auxiliary instruments, and provides the following scheme that the device comprises a hemodialysis sickbed, and a hemodialysis clinostatism lower limb movement mechanism is arranged at the bed tail position of the upper surface of the hemodialysis sickbed. The pedal mechanism for assisting the lower limbs of the patient to move in the lying position is arranged on the dialysis sickbed, the patient steps on the pedal mechanism with the feet, the servo motor drives the gear set to be matched with the rotating disc additionally provided with the weight to rotate, rotating force is transmitted to the pedal mechanism, and therefore the lower limbs of the patient can move conveniently when the patient is subjected to hemodialysis. The leg movement of a patient accelerates the circulation of blood in the body and promotes the removal of creatinine and urea to help the completion of hemodialysis, and the length of a rod piece of the pedal mechanism has an adjustable function, so that the increase of the pedaling movement amplitude of the patient is realized through the length change, and the appropriate movement amplitude is selected as required.

Description

Technical Field

[0001] The present invention relates to the technical field of hemodialysis auxiliary instruments, and particularly relates to a device for the lying position lower limb movement of hemodialysis patients during the dialysis process. Background Art

[0002] The number of maintenance hemodialysis patients is increasing year by year. It is estimated that by 2025, there will be 630 maintenance hemodialysis patients per million population in China, and the total number of hemodialysis patients is estimated to reach 870,000. In recent years, with the rapid development of hemodialysis technology, the survival period of maintenance hemodialysis patients has been extended, but problems such as the decline of physical function and the low quality of life have also followed. And research shows that exercise training during dialysis can improve the dialysis adequacy of maintenance hemodialysis patients, improve physical function and enhance their quality of daily life.

[0003] Specifically, through the flexion, extension, lifting, lowering and other movements of the non-dialysis side limb, it is achieved to increase the toxin clearance of the patient's body, improve the patient's physiological function and cardiopulmonary endurance, and improve the quality of life of maintenance hemodialysis patients. And this set of movements is also called "lying position gymnastics", which includes the patient's autonomous and alternating slow lifting and lowering of the legs. However, this set of movements has certain requirements for the patient's physical function during hemodialysis, and there is no auxiliary device to support the patient during the movement, and the amplitude of the movement may pose a risk of affecting dialysis, resulting in the detachment of dialysis pipe fittings, etc. Therefore, those skilled in the art have proposed a device for the lying position lower limb movement of hemodialysis patients during the dialysis process. Summary of the Invention

[0004] In view of the defects that the movement amplitude of the hemodialysis lower limb movement instrument proposed in the above background art is not adjustable and the initiative to drive the patient's movement is insufficient, a technical solution content of a device for the lying position lower limb movement of hemodialysis patients during the dialysis process is provided; it includes a hemodialysis hospital bed, and a hemodialysis lying position lower limb movement mechanism is arranged at the end of the upper surface of the hemodialysis hospital bed; wherein, the hemodialysis hospital bed includes a bed board, a hospital bed lifting base fixed on the bottom surface of the bed board, and hospital bed casters fixed at the four corners of the lower surface of the hospital bed lifting base.

[0005] The lower limb movement mechanism for hemodialysis in the lying position includes a driving tank horizontally fixed at the tail of the upper surface of the bed board, a foot movement driving component fixed at the middle position of the inner cavity of the driving tank, and adjustable pedal components arranged on the left and right sides of the foot movement driving component and penetrating to the outside of the driving tank; specifically, a patient waiting for hemodialysis lies on the upper surface of the bed board. Through the lifting of the hospital bed lifting base and the angle adjustment of the lifting backrest, the patient is kept in a suitable posture. After the dialysis starts, the patient steps on the foot pedal, and at the same time, the feet are tied up by a strap. The patient steps on the foot pedal to drive the lower L-shaped rod and the upper L-shaped rod to rotate, and then the rotating shaft, the turntable and the turntable rotate. The patient's legs move alternately through foot movement. When the patient's physical fitness is insufficient to support active movement, the servo electric cylinder is used to push the servo drive motor to move, and the teeth between the second bevel gear and the first bevel gear are meshed with each other. The rotational force of the servo drive motor is transmitted to the central shaft through the first bevel gear after deceleration, so that the central shaft drives the turntable and the turntable to rotate, thereby driving the foot pedal at the outer end of the rotating shaft to drive the patient's legs to move. During the rotation of the turntable and the turntable, due to the symmetrically arranged counterweights between the turntable and the turntable, and the counterweights are fan-shaped, the adjustable pedal component can be driven by the centrifugal force generated by the counterweights after the turntable and the turntable rotate.

[0006] The foot movement driving component includes a central shaft, turntables rotatably connected to the left and right sides of the central shaft, a servo drive motor arranged at the rear of the central shaft, turntables on the surfaces of the turntables away from each other, and a first bevel gear fixed on the outer surface of the central shaft. A second bevel gear meshing and driving with the first bevel gear is fixed on the output shaft of the servo drive motor;

[0007] The adjustable pedal component includes a foot pedal, a lower L-shaped rod fixed on the side of the foot pedal close to each other, and an upper L-shaped rod arranged above the lower L-shaped rod and rotationally symmetric with the lower L-shaped rod. Among them, hollow sleeves are fixed at the ends of the upper L-shaped rod and the lower L-shaped rod close to each other, and movable columns are movably arranged in the inner cavities on the sides of the hollow sleeves close to each other; specifically, when the patient needs to select different movement amplitudes, such as the crossing amplitude of the alternating movement of the legs; the screws on the side walls of the upper and lower hollow sleeves are rotated to the loose state, and both ends of the movable column are pulled out a certain length from the inside of the hollow sleeve to increase the distance between the lower L-shaped rod and the upper L-shaped rod, so that the foot pedal is farther away from the axis core of the rotating shaft, and the movement circumference of the circular motion of the foot pedal becomes larger, thereby increasing the movement amplitude of the patient's legs.

[0008] In the technical solution of the above-mentioned device for lower limb movement in the lying position during hemodialysis for patients, preferably, a footrest board is fixed at the tail of the top surface of the bed board, a lifting backrest is arranged at the head of the top surface of the bed board, and side baffles are fixed on both the left and right sides of the bed board.

[0009] In the technical solution of the above-mentioned device for the lying position lower limb movement during hemodialysis of hemodialysis patients, preferably, the bottom surface of the driving tank is fixed on the top surface of the bed board through an aluminum alloy bracket, and two round holes for the adjustable pedal member to penetrate are provided on both the left and right side walls of the driving tank, and bearing rings adapted to the adjustable pedal member are arranged inside the round holes.

[0010] In the technical solution of the above-mentioned device for the lying position lower limb movement during hemodialysis of hemodialysis patients, preferably, two symmetric counterweight blocks are fixed on the surfaces of the turntable and the turntable close to each other, and rotating shafts penetrating the driving tank are fixed on both sides of the turntable away from each other.

[0011] In the technical solution of the above-mentioned device for the lying position lower limb movement during hemodialysis of hemodialysis patients, preferably, bearing brackets are fixed at the left and right positions on the bottom side wall of the inner cavity of the driving tank, bearings are fixed on the top surfaces of the bearing brackets through screws, and the rotating shafts pass through the inside of the bearings, and the bottom surfaces of the bearing brackets are flush with the arc surface of the bottom surface of the inner cavity of the driving tank.

[0012] In the technical solution of the above-mentioned device for the lying position lower limb movement during hemodialysis of hemodialysis patients, preferably, two groups of servo electric cylinders are installed on the surface of the servo drive motor away from the second bevel gear, and the sides of the servo electric cylinders away from the servo drive motor are fixedly connected to the rear side wall of the inner cavity of the driving tank.

[0013] In the technical solution of the above-mentioned device for the lying position lower limb movement during hemodialysis of hemodialysis patients, preferably, straps for covering the feet of patients are fixed on the surfaces of the foot pedals, and the foot pedals are arranged in rotational symmetry with the central axis of the central axis as the base point.

[0014] In the technical solution of the above-mentioned device for the lying position lower limb movement during hemodialysis of hemodialysis patients, preferably, threaded holes are provided on both the left and right side walls of the outer surface of the hollow sleeve, screws are arranged in the threaded holes, and one end of the screw located in the inner cavity of the hollow sleeve is rotatably connected to an arc-shaped clamp, and the sides of the arc-shaped clamps close to each other tightly hold the outer surface of the movable column.

[0015] In the technical solution of the above-mentioned device for the lying position lower limb movement during hemodialysis of hemodialysis patients, preferably, chambers for the movable column to be inserted are provided inside the hollow sleeves, and openings for the hollow sleeves to deform and tightly hold the movable column are provided on both the front and rear side walls of the outer surface of the hollow sleeves.

[0016] It can be seen from the above technical solutions that the present invention provides a device for the lying position lower limb movement during hemodialysis of hemodialysis patients. Compared with the prior art, the present invention has the following beneficial effects:

[0017] In the present invention, a footrest mechanism for assisting the lower limbs of a patient to move is provided on a dialysis bed. By stepping on the footrest mechanism with the patient's feet and driving a gear set by a servo motor to cooperate with a turntable equipped with a counterweight to rotate, the rotational force is transmitted to the footrest mechanism. In this way, when the patient undergoes hemodialysis, the blood circulation in the body is accelerated through the patient's leg movements, promoting the clearance of creatinine and urea and helping to complete hemodialysis. Moreover, the length of the rod of the footrest mechanism has an adjustable function, and the amplitude of the patient's stepping motion is increased by changing the length, so as to select an appropriate motion amplitude according to needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce and explain the drawings required for describing the embodiments of the present invention or the prior art. Obviously, the drawings described below are only partial embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Schematic diagram of the installation of the lower limb movement mechanism for hemodialysis in the lying position on the hospital bed;

[0020] Figure 2 Schematic diagram of the overall structure of the dialysis bed;

[0021] Figure 3 Schematic diagram after longitudinal sectioning of the lower limb movement mechanism for hemodialysis in the lying position;

[0022] Figure 4 Schematic diagram of the adjustable pedal in the lower limb movement mechanism for hemodialysis in the lying position;

[0023] Figure 5 Schematic diagram of the foot movement drive assembly in the lower limb movement mechanism for hemodialysis in the lying position.

[0024] Appendix Figure 1 To Appendix Figure 5 Among them, the corresponding relationships of the reference numerals of each component are as follows:

[0025] 1. Hemodialysis hospital bed; 11. Bed board; 12. Hospital bed casters; 13. Hospital bed lifting base; 14. Side baffle; 15. Lifting backrest; 2. Hemodialysis lying position lower limb movement mechanism; 21. Driving tank; 22. Foot movement driving assembly; 221. Central axis; 222. First bevel gear; 223. Turntable; 224. Counterweight; 225. Second bevel gear; 226. Servo drive motor; 227. Servo electric cylinder; 228. Turntable; 229. Rotating shaft; 2210. Bearing; 2211. Bearing bracket; 23. Adjustable pedal member; 231. Foot pedal; 232. Belt; 233. Lower L-shaped rod; 234. Movable column; 235. Arc-shaped hoop; 236. Screw; 237. Hollow sleeve; 238. Upper L-shaped rod. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] In order to make a clearer explanation and illustration of the technical solutions and implementation manners of the present invention, the following introduces several preferred specific embodiments for implementing the technical solutions of the present invention.

[0028] Embodiment; A preferred technical solution of a device for the lying position lower limb movement during hemodialysis of hemodialysis patients:

[0029] Refer to the attached drawings of the specification Figure 1 and the attached Figure 2 as shown; It includes a hemodialysis hospital bed 1, and a hemodialysis lying position lower limb movement mechanism 2 is arranged at the tail position of the upper surface of the hemodialysis hospital bed 1; among them, the hemodialysis hospital bed 1 includes a bed board 11, a hospital bed lifting base 13 fixed on the bottom surface of the bed board 11, and hospital bed casters 12 fixed at the four corner positions of the lower surface of the hospital bed lifting base 13; a foot board is fixed at the tail of the top surface of the bed board 11, a lifting backrest 15 is arranged at the head of the top surface of the bed board 11, and side baffles 14 are fixed on both the left and right sides of the bed board 11.

[0030] Refer to the attached drawings of the specification Figure 3 as shown; The hemodialysis lying position lower limb movement mechanism 2 includes a driving tank 21 horizontally fixed at the tail of the upper surface of the bed board 11, a foot movement driving assembly 22 fixed at the middle position of the inner cavity of the driving tank 21, and adjustable pedal members 23 arranged on both the left and right sides of the foot movement driving assembly 22 and penetrating to the outside of the driving tank 21;

[0031] Refer to the attached drawings of the specification Figure 5As shown in the figure; the pedal exercise drive assembly 22 includes a central shaft 221, turntables 223 rotatably connected to the left and right sides of the central shaft 221, and a servo drive motor 226 provided at the rear side of the central shaft 221, turntables 228 on the surfaces of the turntables 223 away from each other, and a first bevel gear 222 fixed on the outer circumferential surface of the central shaft 221. A second bevel gear 225 engaged with the first bevel gear 222 is fixed on the output shaft of the servo drive motor 226;

[0032] Refer to the attached drawings of the specification Figure 4 As shown in the figure; the adjustable pedal member 23 includes a foot pedal 231, a lower L-shaped rod 233 fixed on the side of the foot pedal 231 close to each other, and an upper L-shaped rod 238 provided above the lower L-shaped rod 233 and rotationally symmetric with the lower L-shaped rod 233. Among them, hollow sleeves 237 are fixed at the ends of the upper L-shaped rod 238 and the lower L-shaped rod 233 close to each other, and a movable column 234 is movably arranged in the inner cavity on the side of the hollow sleeves 237 close to each other.

[0033] Refer to the attached drawings of the specification Figure 5 As shown in the figure; the bottom surface of the drive tank 21 is fixed on the top surface of the bed board 11 through an aluminum alloy bracket, and two circular holes for the adjustable pedal member 23 to pass through are opened on both the left and right side walls of the drive tank 21. Bearing rings adapted to the adjustable pedal member 23 are arranged inside the circular holes. Two symmetrically arranged counterweight blocks 224 are fixed on the surfaces of the turntables 223 and the turntables 228 close to each other, and rotating shafts 229 penetrating the drive tank 21 are fixed on the sides of the turntables 228 away from each other.

[0034] Refer to the attached drawings of the specification Figure 5 As shown in the figure; bearing brackets 2211 are fixed at the left and right positions on the bottom side wall of the inner cavity of the drive tank 21. Bearings 2210 are fixed on the top surfaces of the bearing brackets 2211 by screws, and the rotating shafts 229 pass through the inside of the bearings 2210. The bottom surfaces of the bearing brackets 2211 are flush with the arc surface of the bottom surface of the inner cavity of the drive tank 21. Two groups of servo cylinders 227 are installed on the surface of the servo drive motor 226 away from the second bevel gear 225, and the sides of the servo cylinders 227 away from the servo drive motor 226 are fixedly connected to the rear side wall of the inner cavity of the drive tank 21.

[0035] Refer to the attached drawings of the specification Figure 4As shown in the figure, straps 232 for covering the patient's feet are fixedly arranged on the surfaces of the foot pedals 231, and the foot pedals 231 are rotationally symmetrically arranged with the central axis of the central axis 221 as the base point; threaded holes are formed in the left and right side walls on the outer circumferential surface of the hollow sleeve 237, screw rods 236 are arranged in the threaded holes, and one end of the screw rod 236 located in the inner cavity of the hollow sleeve 237 is rotatably connected with an arc-shaped clamp 235. The arc-shaped clamps 235 tightly hold the outer circumferential surface of the movable column 234 on the side close to each other. Chambers for inserting the movable column 234 are arranged inside the hollow sleeves 237, and openings for the hollow sleeves 237 to deform and tightly hold the movable column 234 are formed in the front and rear side walls of the outer surface of the hollow sleeves 237.

[0036] According to the above-mentioned preferred technical solution, the working process of this technical solution is described as follows:

[0037] The patient waiting for hemodialysis lies on the upper surface of the bed board 11. Through the lifting of the hospital bed lifting base 13 and the angle adjustment of the lifting backrest 15, the patient is kept in a proper posture. After the dialysis starts, the patient steps on the foot pedals 231, and at the same time, the feet are restrained by the straps 232. The patient stepping on the foot pedals 231 drives the lower L-shaped rod 233 and the upper L-shaped rod 238 to rotate, and then the rotating shaft 229, the turntable 228, and the turntable 223 rotate. The alternating movement of the patient's legs is realized through the foot movement.

[0038] When the physical fitness of the patient is insufficient to support active movement, the servo electric cylinder 227 is used to push the servo drive motor 226 to move, and the teeth between the second bevel gear 225 and the first bevel gear 222 are meshed with each other. The rotational force of the servo drive motor 226 is transmitted to the central axis 221 through the first bevel gear 222 after deceleration, so that the central axis 221 drives the turntable 223 and the turntable 228 to rotate, thereby driving the foot pedals 231 at the outer end of the rotating shaft 229 to drive the patient's legs to move. During the rotation of the turntable 223 and the turntable 228, due to the symmetrically arranged counterweight blocks 224 between the turntable 223 and the turntable 228, and the counterweight blocks 224 are fan-shaped, the centrifugal force generated by the counterweight blocks 224 after the rotation of the turntable 223 and the turntable 228 can drive the adjustable pedal member 23 to move.

[0039] When the patient needs to select different movement amplitudes, such as the crossing amplitude of the alternating movement of the legs; the screw rods 236 on the side walls of the upper and lower hollow sleeves 237 are rotated to a loose state, and both ends of the movable column 234 are pulled out a certain length from the inside of the hollow sleeves 237 respectively, so as to increase the distance between the lower L-shaped rod 233 and the upper L-shaped rod 238, so that the foot pedal 231 is farther away from the axis core of the rotating shaft 229, and the movement circumference of the circular motion of the foot pedal 231 becomes larger, thereby increasing the movement amplitude of the patient's legs.

[0040] Finally, it should also be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that this application can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in this application.

[0041] The present invention is not limited to the above-mentioned best implementation mode. Anyone should know that structural changes made under the inspiration of the present invention, as long as they have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.

Claims

1. A device for the movement of the lower limbs in the lying position during hemodialysis for hemodialysis patients, comprising a hemodialysis hospital bed (1), characterized in that, A hemodialysis lying position lower limb movement mechanism (2) is arranged at the tail position of the upper surface of the hemodialysis hospital bed (1); wherein, the hemodialysis hospital bed (1) includes a bed board (11), a hospital bed lifting base (13) fixed on the bottom surface of the bed board (11), and hospital bed casters (12) fixed at the four corner positions of the lower surface of the hospital bed lifting base (13). The hemodialysis lying position lower limb movement mechanism (2) includes a driving tank (21) horizontally fixed at the tail of the upper surface of the bed board (11), a foot movement driving assembly (22) fixed at the middle position of the inner cavity of the driving tank (21), and adjustable pedal parts (23) arranged on the left and right sides of the foot movement driving assembly (22) and penetrating to the outside of the driving tank (21). The foot movement driving assembly (22) includes a central shaft (221), turntables (223) fixed on the left and right sides of the central shaft (221), a servo driving motor (226) arranged at the rear side of the central shaft (221), turntables (228) on the surfaces of the turntables (223) away from each other, and a first bevel gear (222) fixed on the outer surface of the central shaft (221), and a second bevel gear (225) meshing and driving with the first bevel gear (222) is fixed on the output shaft of the servo driving motor (226). The adjustable pedal part (23) includes a foot pedal (231), a lower L-shaped rod (233) rotatably connected to the closer side of the foot pedal (231), and an upper L-shaped rod (238) arranged above the lower L-shaped rod (233) and rotationally symmetric with the lower L-shaped rod (233). Among them, hollow sleeves (237) are fixed at the closer ends of the upper L-shaped rod (238) and the lower L-shaped rod (233), and a movable column (234) is movably arranged in the inner cavity of the closer side of the hollow sleeves (237).

2. The device for the lower limb movement in the lying position during hemodialysis of hemodialysis patients according to claim 1, wherein, A foot board is fixed at the tail of the top surface of the bed board (11), a lifting backrest (15) is arranged at the head of the top surface of the bed board (11), and side baffle plates (14) are fixed on both the left and right sides of the bed board (11).

3. A device for the lower limb movement of a hemodialysis patient during dialysis in the lying position according to claim 1, characterized in that, The bottom surface of the driving tank (21) is fixed on the top surface of the bed board (11) through an aluminum alloy bracket, and two circular holes for the adjustable pedal part (23) to penetrate are opened on both the left and right side walls of the driving tank (21), and bearing rings adapted to the adjustable pedal part (23) are arranged inside the circular holes.

4. A device for the lying position lower limb movement during dialysis of hemodialysis patients according to claim 1, characterized in that, Two symmetric counterweights (224) are fixed on the surfaces of the turntables (223) and the turntables (228) close to each other, and rotating shafts (229) penetrating the driving tank (21) are fixed on the sides of the turntables (228) away from each other.

5. The device for the lower limb movement in the lying position during hemodialysis of hemodialysis patients according to claim 1, wherein Bearing brackets (2211) are fixed at the left and right positions of the bottom side wall of the inner cavity of the driving tank (21), bearings (2210) are fixed on the top surfaces of the bearing brackets (2211) through screws, and the rotating shafts (229) pass through the inside of the bearings (2210), and the bottom surfaces of the bearing brackets (2211) are flush with the arc surface of the bottom surface of the inner cavity of the driving tank (21).

6. The device for the lower limb movement of a lying position during hemodialysis of a hemodialysis patient according to claim 1, characterized in that, On one side surface of the servo drive motor (226) away from the second bevel gear (225), two groups of servo cylinders (227) are installed, and one side of the servo cylinder (227) away from the servo drive motor (226) is fixedly connected to the rear side wall of the inner cavity of the drive tank (21).

7. A device for the lower limb movement of a hemodialysis patient during dialysis in the lying position according to claim 1, characterized in that, On the surface of the pedal (231), straps (232) for sleeving the patient's feet are fixedly installed, and the pedals (231) are arranged in rotational symmetry with the central axis of the central axis (221) as the base point.

8. A device for lower limb movement in the lying position during hemodialysis for hemodialysis patients, characterized in that, Threaded holes are provided on the left and right side walls of the outer ring surface of the hollow sleeve (237), screws (236) are arranged in the threaded holes, and one end of the screw (236) located in the inner cavity of the hollow sleeve (237) is rotatably connected to an arc-shaped clamp (235), and the arc-shaped clamps (235) are in close contact with the outer ring surface of the movable column (234) on the side where they are close to each other.

9. A device for lower limb movement in the lying position during hemodialysis for hemodialysis patients, characterized in that, A chamber for inserting the movable column (234) is provided inside the hollow sleeve (237), and openings for the hollow sleeve (237) to deform and hold the movable column (234) tightly are provided on the front and rear side walls of the outer surface of the hollow sleeve (237).

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