Clinical exercise device for cardiovascular medicine of old people

Abstract

The invention relates to the technical field of medical rehabilitation instruments, in particular to an old cardiovascular medicine clinical exercise device which comprises a rectangular bearing frame body, the other side of the bearing frame body is fixedly connected with a leg training mechanism, a groove assembly is arranged below a seat, the leg training mechanism comprises a shell, and a main transmission shaft is arranged in the shell; the two sides of the main transmission shaft are coaxially and fixedly connected with cams, the ends, away from the main transmission shaft, of the cams are fixedly connected with pedals, the two ends of the main transmission shaft are rotationally connected with resistance assemblies, a plurality of sliding grooves are symmetrically formed in the main transmission shaft, and a plurality of balancing weights are arranged in the sliding grooves in a sliding fit mode and rotationally connected with the resistance assemblies. The other side of the resistance assembly communicates with the groove assembly. According to the exercise condition and the physical condition of a patient, resistance is dynamically adjusted in real time, exercise force is synchronously converted into lower limb massage force, in addition, the body deviation of the patient is sensed in real time, anti-falling protection is provided, and the effect of improving the rehabilitation exercise effect and safety of the patient is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical rehabilitation devices, and particularly to a clinical exercise device for elderly patients in cardiovascular medicine. Background Art

[0002] With the intensification of population aging, the number of elderly cardiovascular patients has been increasing year by year. For such patients, appropriate exercise is an important means to improve cardiovascular function and enhance physical resistance. Through exercise, blood circulation can be promoted, blood pressure can be reduced, the burden on the heart can be alleviated, and the contractility and endurance of the myocardium can be improved. However, the physical condition of elderly cardiovascular patients is relatively special, and they need to be particularly careful when exercising to avoid overexertion or triggering cardiovascular events. Therefore, it is particularly important to design a clinical exercise device suitable for elderly cardiovascular patients. By sitting on a seat supported by a carrier frame and a support column and performing leg pedaling on a foot pedal, it can not only meet their exercise needs but also ensure the safety and effectiveness during the exercise process.

[0003] The existing published application number 202210817872.1 proposes a clinical exercise device for elderly patients in cardiovascular medicine. This device can prevent the rotation shaft from jamming during the leg exercise of the elderly and protect the knees of the elderly from injury, which improves the safety and comfort of the exercise to a certain extent. However, this solution still has some deficiencies. Although it considers the design of preventing the rotation shaft from jamming and protecting the knees, when pedaling the foot pedal, it cannot adjust the resistance in real time according to the patient's physical condition and exercise needs. For elderly cardiovascular patients, there are differences in their physical conditions and exercise abilities. The fixed resistance setting may not meet the needs of all patients. Excessive resistance may cause patients to be overexerted, while too small resistance may not achieve the exercise effect.

[0004] Secondly, this existing technology relaxes the leg muscles of the elderly after the exercise is completed and cannot massage the lower limbs synchronously during the exercise. When pedaling the foot pedal for exercise, the lower limb muscles of the patient will be in a tense state. If the lower limbs can be massaged synchronously during the exercise, it can not only relieve the tension of the muscles, reduce lactic acid accumulation, but also promote blood circulation and accelerate the excretion of metabolic wastes, thereby improving the exercise effect and comfort.

[0005] In addition, the device also lacks an effective anti-fall protection mechanism. During exercise, elderly cardiovascular patients are prone to accidents such as falling due to the decline of physical functions and the weakening of balance ability. Once falling from the seat during exercise, it may not only cause physical injuries but also lead to serious consequences such as cardiovascular events. Therefore, it is of great significance to design a clinical exercise device for elderly cardiovascular patients that has anti-fall protection function, can adjust resistance in real time during exercise, and synchronously massage the lower limbs to ensure the safety of patients and improve the exercise effect and comfort of patients. Summary of the Invention

[0006] To solve the above problems, the present invention provides a clinical exercise device for elderly cardiovascular patients, which can dynamically adjust the resistance in real time according to the patient's exercise situation and physical condition, and synchronously convert the exercise force into lower limb massage force. In addition, by real-time sensing the patient's body offset and providing anti-fall protection, the effect of improving the rehabilitation exercise effect and safety of patients is achieved.

[0007] To achieve the above object, the technical solution of the present invention is as follows: A clinical exercise device for elderly cardiovascular patients includes a rectangular carrier frame. One side of the top of the carrier frame in the width direction is fixedly connected with a support column, and the top of the support column is fixedly connected with a seat. A hand grip is fixedly connected to the seat, and the vertical end of the hand grip is fixedly connected to the seat. A sensing component for sensing the patient's heart rate during training is arranged in the horizontal end of the hand grip. The sensing component is signal-connected to a controller. The other side of the carrier frame is fixedly connected with a leg training mechanism, and a groove component for providing double-leg support and massage for the patient during leg training is arranged below the seat;

[0008] The leg training mechanism includes a housing. A main transmission shaft is arranged in the housing. Cams are coaxially fixedly connected to both sides of the main transmission shaft. A foot pedal is fixedly connected to one end of the cam away from the main transmission shaft. Resistance components for adjusting the resistance of the pedal component according to the pedaling speed of the patient's legs are rotatably connected to both ends of the main transmission shaft. The resistance components are fixedly connected to the inner bottom wall of the housing. A plurality of sliding grooves are symmetrically arranged in the main transmission shaft, and a plurality of counterweight blocks are slidably matched in the sliding grooves. The counterweight blocks are rotatably connected to the resistance components, and the other side of the resistance components is communicated with the groove component;

[0009] The resistance components each include pneumatic chambers, hydraulic cylinders symmetrically arranged at both ends of the main transmission shaft, and a first piston located in the hydraulic cylinder. The hydraulic cylinder is divided into an oil chamber and a pushing chamber by the first piston. Ball hinge connecting rods are fixedly connected to the counterweight blocks, and the other ends of the ball hinge connecting rods all penetrate through the hydraulic cylinder and extend into the pushing chamber and are fixedly connected to the first piston. The first piston is rotatably connected to the inner side wall of the hydraulic cylinder while also being slidably matched. The oil chamber is filled with liquid. One side of the hydraulic cylinder away from the first piston is fixedly connected to the pneumatic chamber. A second piston is slidably connected between the pneumatic chamber and the hydraulic cylinder. One end of the pneumatic chamber away from the hydraulic cylinder is communicated with the groove component;

[0010] The resistance assembly further includes a plurality of adjustment assemblies that communicate with the side wall of the oil chamber and are used to control the resistance. The adjustment assemblies correspond to the oil chambers one by one. A trigger assembly for controlling the resistance of the adjustment assembly based on the rotational speed is coaxially and fixedly connected to the main transmission shaft. Both the adjustment assembly and the trigger assembly are signal-connected to the controller.

[0011] The technical principle of the above solution is as follows:

[0012] When the patient sits on the seat, the legs are placed in the groove assembly, and the feet exercise by pedaling the foot pedals. The main transmission shaft rotates axially as the foot pedals rotate, driving the counterweight in the chute to slide outwards under the action of centrifugal force. The counterweight pushes the first piston in the hydraulic cylinder to generate an axial displacement through the spherical hinge connecting rod, squeezing the liquid in the oil chamber to form a pressure gradient. When the rotational speed of the foot pedals is low, the trigger assembly does not trigger the adjustment assembly. At this time, the adjustment assembly forms a free backflow state for the liquid, generating a small reverse thrust on the first piston, and the counterweight provides a small resistance to the main transmission shaft; when the rotational speed increases, the trigger assembly triggers the adjustment assembly, restricting the liquid backflow, and the liquid only exists in the oil chamber, increasing the reverse thrust on the first piston, increasing the resistance of the counterweight to the main transmission shaft, and realizing the non-linear growth of the resistance.

[0013] When the first piston squeezes the oil chamber, the liquid pressure is transmitted to the pneumatic chamber through the second piston, and the gas in the pneumatic chamber is delivered to the groove assembly to generate a directional pressure on the patient's lower limbs for massage, realizing the physical therapy conversion of the exercise energy.

[0014] The sensing assembly monitors the patient's heart rate in real time, and the controller dynamically adjusts the resistance of the adjustment assembly according to the heart rate change.

[0015] Adopting the above solution has the following beneficial effects:

[0016] 1. In this solution, through the counterweight in the main transmission shaft and the first piston mechanism in the hydraulic cylinder, the function of automatically adjusting the pedal resistance according to the pedaling speed of the patient's legs is realized. When the rotational speed of the foot pedals is low, the adjustment assembly allows the liquid to flow back freely, generating a small reverse thrust on the first piston and providing a small resistance; when the rotational speed increases, the trigger assembly triggers the adjustment assembly, restricting the liquid backflow, increasing the reverse thrust on the first piston, thereby increasing the resistance of the counterweight to the main transmission shaft, realizing the non-linear growth of the resistance, enabling the exercise intensity to be adjusted personalized according to the patient's physical condition and exercise needs, and improving the exercise effect.

[0017] 2. In this solution, when the first piston squeezes the hydraulic fluid chamber, the liquid pressure is transmitted to the pneumatic chamber through the second piston. The gas in the pneumatic chamber is transported into the groove assembly to generate a directional pressure on the patient's lower limbs for massage, realizing the physical therapy conversion of kinetic energy. The patient can enjoy the comfort of massage while exercising, which helps to promote blood circulation and relieve muscle fatigue.

[0018] 3. In this solution, the sensing component in the handle can real-time monitor the patient's heart rate, and the controller dynamically adjusts the resistance of the adjustment component according to the heart rate change, so that the exercise intensity can be adjusted in real time according to the patient's physiological response, ensuring the safety and effectiveness of the exercise process.

[0019] Furthermore, the adjustment components all include return pipes. Both ends of the return pipes are respectively connected to the side walls of the hydraulic fluid chamber with valves, and the valves are all signal-connected to the controller.

[0020] Beneficial effects: Since traditional resistance adjustment devices mostly adopt manual or mechanical adjustment and cannot match the patient's exercise state in real time, a combined design of return pipes and valves is adopted. When the patient's pedaling speed changes, the controller dynamically adjusts the valve opening according to the feedback signal of the trigger component, controls the return path of the hydraulic oil, so that the resistance component can dynamically adjust the resistance to the main transmission shaft according to the patient's exercise intensity, heart rate change or other physiological indicators, providing a more personalized exercise experience.

[0021] Furthermore, the trigger components all include fixing rings coaxially sleeved on the main transmission shaft. There are connecting rods fixedly connected between the fixing rings and the inner bottom wall of the housing. A connecting sleeve is also coaxially sleeved on the main transmission shaft. A first spring is fixedly connected to the outer side wall of the connecting sleeve, and the other end of the first spring is fixedly connected to a flyweight. A trigger button is fixedly connected to the inner side wall of the fixing ring, and the trigger button is located in the movement track of the flyweight;

[0022] When the flyweight contacts the trigger button due to the centrifugal force of the rotation of the main transmission shaft, the controller controls the valve to be in a closed state. When the centrifugal force is not enough to drive the flyweight to contact the inner side wall of the fixing ring and cannot contact the trigger button, the controller controls the valve to be in an open state.

[0023] Beneficial effects: When the main transmission shaft rotates, the flyweight will move outwards due to the action of centrifugal force. The higher the rotation speed, the greater the centrifugal force and the greater the moving distance of the flyweight. When the flyweight contacts the trigger button due to centrifugal force, the controller will immediately receive the signal and control the valve to close, thereby restricting the return of the liquid and increasing the resistance. When the rotation speed decreases and the centrifugal force is not enough to drive the flyweight to contact the inner side wall of the fixing ring, that is, it cannot contact the trigger button, the controller will control the valve to open, allowing the liquid to flow back freely and reducing the resistance. It ensures that the change of resistance during the exercise process is closely related to the patient's exercise intensity, providing a more personalized exercise experience.

[0024] Furthermore, a valve core with a 60° conical angle at the end is provided at each valve, and the valve core realizes the opening or closing of the valve by being inserted into the valve.

[0025] Beneficial effects: The design of the valve core with a 60° conical angle can closely fit with the valve seat to form an effective sealing surface. When the valve core is inserted into the valve, the conical shape can ensure uniform contact between the sealing surfaces, improving the reliability of the seal.

[0026] Furthermore, the groove assembly includes two inclined grooves symmetrically arranged under the seat and obliquely at 45° to the seat. Airbags are fixedly connected in the inclined grooves, and tracheas are respectively connected between the airbags and the pneumatic cavity.

[0027] Beneficial effects: The design of the 45° inclined groove assembly conforms to the ergonomic principle and can provide comfortable support and positioning for the patient's legs. This inclined design helps to reduce the fatigue of the legs during exercise and improve the exercise comfort of the patient. The airbags are connected to the pneumatic cavity through tracheas. When the gas pressure in the pneumatic cavity changes, the airbags will expand or contract accordingly, thereby performing directional massage on the patient's legs, which helps to promote blood circulation in the lower limbs during exercise, relieve muscle tension, and improve the recovery effect after exercise.

[0028] Furthermore, the liquid in the oil cavity is silicon-based hydraulic oil.

[0029] Beneficial effects: The viscosity of the silicon-based hydraulic oil changes little with temperature and has good viscosity-temperature performance. This means that at different temperatures, the flow performance of the silicon-based hydraulic oil remains stable, can provide a consistent damping effect, and ensure the smooth operation of the exercise device.

[0030] Furthermore, the axes of the sliding grooves are all at an angle of 15° with the inner wall of the main transmission shaft. The counterweights are all T-shaped, and the protruding ends of the counterweights are slidably matched with the sliding grooves.

[0031] Beneficial effects: The design that the sliding grooves are at an angle of 15° with the inner wall of the main transmission shaft enables the counterweights to generate a certain centripetal force component when rotating with the main transmission shaft, which helps to stabilize the movement trajectory of the counterweights, reduce shaking and vibration, improve the stability of the entire transmission system, and make the exercise device operate more smoothly and reliably during operation. The T-shaped counterweight design makes the center of gravity of the counterweight more concentrated, and when rotating with the main transmission shaft, it can generate a greater centrifugal force, thereby more precisely adjusting the resistance of the transmission system.

[0032] Furthermore, the sensing component includes blood pressure sensors symmetrically arranged on both sides of the hand grip, and the blood pressure sensors are all signal-connected to the controller.

[0033] Beneficial effects: The blood pressure sensor can monitor the blood pressure changes of the patient in real time and accurately. The controller can provide personalized exercise guidance for the patient according to the data of the blood pressure sensor. For example, when the patient's blood pressure is too high, the controller can automatically adjust the exercise intensity or suggest the patient to rest to avoid potential health risks, which helps the patient exercise within a safe range and improve the exercise effect at the same time.

[0034] Furthermore, a balance component for preventing the patient from falling off the seat is fixedly connected to the inner bottom wall of the seat, and protection components for providing a fall prevention protection mechanism for the patient are fixedly connected to both sides of the seat. The balance component and the protection component are both in signal connection with the controller;

[0035] The balance component includes an anti-tipping lever. A support is hinged at the midpoint of the anti-tipping lever. The support is fixedly connected to the inner bottom wall of the seat. Second springs are provided at the tops of both ends of the lever, and the other ends of the second springs are fixedly connected to the inner top wall of the seat. An anti-tipping button is provided on the inner top wall of the seat. The anti-tipping button is in signal connection with the controller. The anti-tipping button is located in the movement track of the lever. A plurality of pendulums are suspended at the bottoms of both ends of the lever.

[0036] Beneficial effects: The anti-tipping lever is hinged to the support, and together with the second springs at the tops of both ends of the lever, when the seat is tilted under the action of an external force, the anti-tipping lever will move accordingly, and the second springs provide a restoring force to help the seat quickly return to the balanced position, effectively preventing the patient from falling off due to the tilt of the seat. The anti-tipping button is located in the movement track of the lever. When the lever moves due to the tilt of the seat, it will trigger the anti-tipping button, and then send a signal to the controller. The controller can take corresponding measures in time according to the received signal, such as adjusting the position of the seat, issuing an alarm or activating the protection component, to provide timely fall prevention protection for the patient.

[0037] Furthermore, each protection component includes a servo motor fixedly connected to one side of the seat. The servo motor is in signal connection with the controller. A transmission rod is coaxially fixedly connected to the output shaft of the servo motor. An arc-shaped armrest frame is coaxially fixedly connected to the transmission rod.

[0038] Beneficial effects: When the controller receives the signal from the balance component and determines that the patient may lose balance, it can immediately instruct the servo motor to start. The servo motor drives the transmission rod to rotate, thereby driving the arc-shaped armrest frame to quickly move to a suitable position to provide immediate support and protection for the patient, effectively preventing falls.

[0039] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0040] Figure 1Isometric schematic diagram of the embodiment of the clinical exercise device for the elderly in the department of cardiovascular medicine of the present invention;

[0041] Figure 2 In the embodiment of the clinical exercise device for the elderly in the department of cardiovascular medicine of the present invention Figure 1 Internal isometric schematic diagram of part A;

[0042] Figure 3 In the embodiment of the clinical exercise device for the elderly in the department of cardiovascular medicine of the present invention Figure 2 Cross-sectional schematic diagram of part B;

[0043] Figure 4 Positive cross-sectional schematic diagram of the fixing ring in the embodiment of the clinical exercise device for the elderly in the department of cardiovascular medicine of the present invention;

[0044] Figure 5 In the embodiment of the clinical exercise device for the elderly in the department of cardiovascular medicine of the present invention Figure 2 Cross-sectional schematic diagram of part C;

[0045] Figure 6 Positive cross-sectional schematic diagram of the seat in the embodiment of the clinical exercise device for the elderly in the department of cardiovascular medicine of the present invention.

[0046] The reference numerals in the drawings of the specification include: 1, bearing frame; 2, outer shell; 3, foot pedal; 4, inclined groove; 5, airbag; 6, armrest frame; 7, hand grip; 8, support column; 9, seat; 10, main transmission shaft; 11, cam; 12, fixing ring; 13, return pipe; 14, hydraulic cylinder; 15, pneumatic cavity; 16, air pipe; 17, ball hinge connecting rod; 18, pushing cavity; 19, first piston; 20, oil cavity; 21, connecting sleeve; 22, first spring; 23, flyweight; 24, trigger button; 25, sliding groove; 26, counterweight; 27, anti-tipping button; 28, second spring; 29, lever; 30, pendulum; 31, support; 32, connecting rod. Detailed implementation manners

[0047] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. 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.

[0048] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0049] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] The following is a further detailed description through specific embodiments:

[0051] Embodiment 1:

[0052] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 : An elderly cardiovascular medicine clinical exercise device, including a rectangular carrier frame 1. One side of the top of the carrier frame 1 along the width direction is integrally formed with a support column 8. The top of the support column 8 is integrally formed with a seat 9. A hand grip 7 is welded on the seat 9. The vertical end of the hand grip 7 is welded to the seat 9. A sensing component for sensing the heart rate of the patient during training is arranged inside the horizontal end of the hand grip 7. The sensing component is signal-connected to a controller. The sensing component includes blood pressure sensors symmetrically arranged on both sides of the hand grip 7, and both blood pressure sensors are signal-connected to the controller.

[0053] The other side of the carrier frame 1 is fixedly connected with a leg training mechanism, and a groove component for providing double-leg support and massage for the patient during leg training is arranged below the seat 9.

[0054] The leg training mechanism includes a housing 2. Inside the housing 2, there is a main transmission shaft 10. On both sides of the main transmission shaft 10, there are cam 11s welded coaxially. One end of the cam 11 far from the main transmission shaft 10 is welded with a foot pedal 3. Since in the traditional leg training mechanism, when the patient exercises, it is mostly necessary to manually adjust the resistance of the foot pedal 3 and it is impossible to automatically adjust the resistance in real time according to the patient's exercise ability. Therefore, in this solution, when the patient pedals the foot pedal 3, there are resistance components rotatably connected to both ends of the main transmission shaft 10 for adjusting the resistance of the pedal assembly according to the pedaling speed of the patient's legs. The resistance components can dynamically increase or decrease the resistance to the foot pedal 3, so that the resistance rotation speed of the foot pedal 3 matches the patient's own physical fatigue degree. The resistance components are bolted to the inner bottom wall of the housing 2.

[0055] Specifically, a number of sliding grooves 25 are symmetrically arranged inside the main transmission shaft 10. A number of counterweight blocks 26 are slidably fitted in the sliding grooves 25. The axes of the sliding grooves 25 form a 15° angle with the inner side wall of the main transmission shaft 10. The counterweight blocks 26 are all T-shaped, and the protruding ends of the counterweight blocks 26 are slidably fitted with the sliding grooves 25. The counterweight blocks 26 are rotatably connected to the resistance components, and the other side of the resistance components is communicated with the groove components. The resistance components all include pneumatic chambers 15, hydraulic cylinders 14 symmetrically arranged at both ends of the main transmission shaft 10, and first pistons 19 located inside the hydraulic cylinders 14. The inside of the hydraulic cylinder 14 is separated by the first piston 19 into an oil chamber 20 and a pushing chamber 18. Ball hinge connecting rods 17 are welded on the counterweight blocks 26. The other ends of the ball hinge connecting rods 17 all penetrate through the hydraulic cylinder 14 and extend into the pushing chamber 18 and are welded to the first piston 19. The first piston 19 is rotatably connected to the inner side wall of the hydraulic cylinder 14 and is also slidably fitted. When the patient pedals the foot pedal 3, the main transmission shaft 10 rotates axially as the foot pedal 3 rotates. The counterweight blocks 26 inside the main transmission shaft 10 slide outward along the sliding grooves 25 under the action of centrifugal force. The sliding of the counterweight blocks 26 pushes the first piston 19 to squeeze from the pushing chamber 18 to the oil chamber 20. At the same time, since the axes of the sliding grooves 25 form a progressive 15° angle with the inner side wall of the main transmission shaft 10, and the depth of the end of the sliding groove 25 far from the first piston 19 is less than the depth of the end of the sliding groove 25 close to the first piston 19, when the counterweight blocks 26 slide along the sliding grooves 25 under the action of centrifugal force, a composite movement of axial component force and radial component force is generated. The axial component force cancels part of the centrifugal force and prolongs the wear life of the sliding grooves 25 and the counterweight blocks 26, while the radial component force can generate a certain resistance to the main transmission shaft 10 to reduce the speed at which the patient steps on the foot pedal 3. In addition, the inclined angle design of the sliding grooves 25 causes a wedge effect when the counterweight blocks 26 reach the critical speed. The contact area between the protruding ends of the counterweight blocks 26 and the inner wall of the sliding grooves 25 increases non-linearly with the increase of the rotation speed, so as to generate a progressive resistance in the hydraulic cylinder 14, effectively solving the problem of sudden resistance change existing in the traditional linear slide rail counterweight system and ensuring the smooth transition of the exercise intensity.

[0056] The oil chamber 20 is filled with a liquid, and the liquid in the oil chamber 20 is a silicon-based hydraulic oil. The silicon-based hydraulic oil forms a pressure gradient under the extrusion of the axial displacement of the first piston 19. The resistance component further includes a plurality of regulating components that communicate with the side wall of the oil chamber 20 and are used to control the resistance. The regulating components correspond to the oil chamber 20 one by one. Each regulating component includes a return pipe 13. Both ends of the return pipe 13 are communicated with the side wall of the oil chamber 20 through valves. The valves are all signal-connected to the controller. When the valves are opened, the silicon-based hydraulic oil will enter the return pipe 13 to increase the return path, so as to reduce the force of the silicon-based hydraulic oil pushing the first piston 19 in the reverse direction, and further reduce the radial component force of the first piston 19 on the counterweight 26, thereby achieving the effect of reducing the resistance. On the contrary, when the valves are closed, the silicon-based hydraulic oil only exists in the oil chamber 20, and the movable volume decreases. Therefore, the driving force of the silicon-based hydraulic oil on the first piston 19 increases, achieving the effect of increasing the resistance. A triggering component for controlling the resistance size of the regulating component based on the rotational speed is coaxially and fixedly connected to the main transmission shaft 10. Each triggering component includes a fixing ring 12 coaxially sleeved on the main transmission shaft 10. A connecting rod 32 is welded between the fixing ring 12 and the inner bottom wall of the housing 2. A connecting sleeve 21 is also coaxially sleeved on the main transmission shaft 10. A first spring 22 is welded on the outer side wall of the connecting sleeve 21. The other end of the first spring 22 is welded with a flyweight 23. A trigger button 24 is screwed on the inner side wall of the fixing ring 12. The trigger button 24 is located in the movement track of the flyweight 23. When the flyweight 23 contacts the trigger button 24 due to the centrifugal force of the rotation of the main transmission shaft 10, the controller controls the valves to be in a closed state. When the centrifugal force is not enough to drive the flyweight 23 to contact the inner side wall of the fixing ring 12 and cannot contact the trigger button 24, the controller controls the valves to be in an open state. Specifically, when the patient pedals the foot pedal 3 slowly, the rotational speed of the main transmission shaft 10 is low, and the pulling force of the first spring 22 on the flyweight 23 is greater than the centrifugal force on the flyweight 23. At this time, the flyweight 23 does not trigger the trigger button 24 on the inner side of the fixing ring 12, and the controller controls the valves to be in an open state. The silicon-based hydraulic oil circulates between the return pipe 13 and the oil chamber 20 to form a low-resistance path. Since the movable volume of the silicon-based hydraulic oil is large, the thrust on the first piston 19 is reduced. Furthermore, the thrust converted from the centrifugal force generated by the counterweight 26 cancels 70% of the reverse thrust of the first piston 19. The radial component force of the counterweight 26 pushed back by the first piston 19 is small, so only the basic resistance is provided. When the rotational speed increases, the centrifugal force of the flyweight 23 is greater than the pulling force of the first spring 22, and the flyweight 23 swings outward to contact the trigger button 24. The controller dynamically adjusts the opening degree of the valves according to the contact frequency. Every time the controller detects 3 trigger signals, the opening degree of the valves decreases by 15%. The silicon-based hydraulic oil in some of the oil chambers 20 is restricted from flowing back, and the force of the reverse extrusion of the first piston 19 increases, thereby increasing the radial component force of the counterweight 26 and increasing the resistance to the main transmission shaft 10.

[0057] In addition, valve cores with a 60° conical angle at the end are provided at the valves, and the valve cores are inserted into the valves to open or close the valves. The impact force of the silicon-based hydraulic oil entering the return pipe 13 is decomposed into axial and radial components by the normal direction of the conical surface of the valve core, reducing the risk of the valve core getting stuck in the valve.

[0058] Since the training and physiotherapy functions of traditional rehabilitation devices are usually independent of each other, patients need to undergo training and massage in separate stages, which prolongs the rehabilitation time and reduces the rehabilitation efficiency. In this solution, the side of the hydraulic cylinder 14 away from the first piston 19 is integrally formed with the pneumatic chamber 15. A second piston is slidably connected between the pneumatic chamber 15 and the hydraulic cylinder 14. The end of the pneumatic chamber 15 away from the hydraulic cylinder 14 is communicated with the groove assembly. The groove assembly includes two inclined grooves 4 symmetrically arranged below the seat 9 and inclined at 45° to the seat 9. Air bags 5 are bonded in the inclined grooves 4. Air pipes 16 are respectively communicated between the air bags 5 and the pneumatic chamber 15. While the oil chamber 20 of the hydraulic cylinder 14 is squeezed by the first piston 19, pressure conduction is achieved between the oil chamber 20 and the pneumatic chamber 15 through the second piston, squeezing the gas in the pneumatic chamber 15 and delivering it to the air bags 5 in the inclined grooves 4 through the air pipes 16. The directional expansion of the air bags 5 can generate a wave-like pressure along the direction of the venous return of the legs, rhythmically squeezing the deep blood vessels of the lower limbs during the centrifugal phase of the patient's pedaling action. When the patient performs a pedaling action during the massage process, the patient's legs will squeeze the gas in the air bags back into the pneumatic chamber 15 in the reverse direction. The gas in the pneumatic chamber 15 squeezes the second piston in the reverse direction, so that a radial component force is added to the counterweight 26 under the action of the thrust in the oil chamber 20, thereby increasing the resistance to the main transmission shaft 10 to a certain extent and realizing the phase synchronization of movement - massage.

[0059] In addition, in this embodiment, when the patient holds the hand grip 7 with the hand, the blood pressure sensor collects the pulsation signal of the patient's radial artery in real time. The controller adjusts the opening and closing of the valve by analyzing the change trend of the systolic blood pressure or diastolic blood pressure. When the systolic blood pressure is detected to exceed 140 mmHg for a long time, the controller increases the valve opening, so that the silicon-based hydraulic oil in the oil chamber 20 quickly returns through the return pipe 13, reducing the resistance of the patient to pedal the foot pedal 3. At the same time, the extrusion force on the air pressure in the pneumatic chamber 15 decreases, and the massage intensity of the air bag 5 weakens accordingly, reducing the extrusion of the air bag 5 on the patient's legs.

[0060] Embodiment 2:

[0061] As shown in the appendix Figure 1 and Figure 6As shown, the difference from Embodiment 1 is that since the anti-fall devices of traditional rehabilitation instruments mostly use fixed seat belts or static handrails, they cannot dynamically sense the body offset of the patient and adjust the protection force in real time, resulting in the risk of excessive restraint or delayed protection. In this solution, a balance component for preventing the patient from falling off the seat 9 is fixedly connected to the inner bottom wall of the seat 9, and protection components for providing an anti-fall protection mechanism for the patient are fixedly connected to both sides of the seat 9. Both the balance component and the protection component are signal-connected to the controller.

[0062] When the patient's body tilts due to an imbalance in the pedaling action, the traditional seat 9 only relies on the gravity sensor for passive alarm. However, the balance component of this solution includes an anti-tilt lever 29. A support 31 is hinged at the midpoint of the anti-tilt lever 29, and the support 31 is bolted to the inner bottom wall of the seat 9. Second springs 28 are provided at the tops of both ends of the lever 29, and the other ends of the second springs 28 are welded to the inner top wall of the seat 9. An anti-tilt button 27 is provided on the inner top wall of the seat 9, and the anti-tilt button 27 is signal-connected to the controller. The anti-tilt button 27 is located in the movement trajectory of the lever 29. A number of pendulums 30 are suspended at the bottoms of both ends of the lever 29. When the patient's center of gravity shifts by more than 5°, the pendulums 30 drive the anti-tilt lever 29 to rotate around the support 31 under the action of gravity. The end of the lever 29 touches the anti-tilt button 27. At the same time, the second spring 28 cooperates with the anti-tilt lever 29. When the anti-tilt lever 29 rotates, the lifted end compresses the second spring 28 to generate a reverse moment to push the anti-tilt lever 29 back to improve the balance force and try to keep the patient from falling off the seat 9 immediately.

[0063] The protection components both include a servo motor screwed to one side of the seat 9. The servo motor is signal-connected to the controller. The output shaft of the servo motor is coaxially key-connected with a transmission rod, and an arc-shaped handrail frame 6 is integrally formed coaxially on the transmission rod. When the anti-tilt button 27 is triggered, the controller immediately starts the servo motor, and the servo motor adjusts the handrail frame 6 from the initial deployment angle of 60° to 120° through the transmission rod to form a surrounding support surface to realize the dynamic restraint of the patient's torso.

[0064] Obviously, the above embodiments are only examples clearly described and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. An elderly cardiovascular medicine clinical exercise device, comprising a rectangular carrier frame (1), a support column (8) is fixedly connected to the top of one side of the carrier frame (1) along the width direction, and a seat (9) is fixedly connected to the top of the support column (8), characterized in that, A hand grip (7) is fixedly connected to the seat (9). The vertical end of the hand grip (7) is fixedly connected to the seat (9). A sensing component for sensing the heart rate of a patient during training is provided inside the horizontal end of the hand grip (7). The sensing component is signal-connected to a controller. A leg training mechanism is fixedly connected to the other side of the carrier frame (1). A groove component for providing double-leg support and massage for the patient during leg training is provided below the seat (9). The leg training mechanism includes a housing (2). A main transmission shaft (10) is provided inside the housing (2). Cam (11) is coaxially and fixedly connected to both sides of the main transmission shaft (10). One end of the cam (11) away from the main transmission shaft (10) is fixedly connected to a foot pedal (3). Resistance components for adjusting the resistance of the pedal assembly according to the pedaling speed of the patient's legs are rotatably connected to both ends of the main transmission shaft (10). The resistance components are fixedly connected to the inner bottom wall of the housing (2). A plurality of sliding grooves (25) are symmetrically provided inside the main transmission shaft (10). A plurality of counterweight blocks (26) are slidably fitted inside the sliding grooves (25). The counterweight blocks (26) are rotatably connected to the resistance components. The other side of the resistance components is communicated with the groove component. The resistance components each include pneumatic chambers (15), hydraulic cylinders (14) symmetrically arranged at both ends of the main transmission shaft (10), and a first piston (19) located inside the hydraulic cylinder (14). The hydraulic cylinder (14) is divided into an oil chamber (20) and a pushing chamber (18) by the first piston (19). Ball hinge connecting rods (17) are fixedly connected to the counterweight blocks (26). The other ends of the ball hinge connecting rods (17) respectively penetrate through the hydraulic cylinder (14) and extend into the pushing chamber (18) and are fixedly connected to the first piston (19). The first piston (19) is rotatably connected to the inner side wall of the hydraulic cylinder (14) while also being slidably fitted. The oil chamber (20) is filled with liquid. One side of the hydraulic cylinder (14) away from the first piston (19) is fixedly connected to the pneumatic chamber (15). A second piston is slidably connected between the pneumatic chamber (15) and the hydraulic cylinder (14). One end of the pneumatic chamber (15) away from the hydraulic cylinder (14) is communicated with the groove component. The resistance components further include a plurality of adjusting components communicated with the side wall of the oil chamber (20) and used for controlling the resistance. The adjusting components correspond to the oil chambers (20) one by one. A triggering component for controlling the resistance size of the adjusting components based on the rotation speed is coaxially fixedly connected to the main transmission shaft (10). The adjusting components and the triggering component are both signal-connected to the controller.

2. The clinical exercise device for elderly cardiovascular medicine according to claim 1, characterized in that, The adjusting components each include a return pipe (13). Valves are respectively communicated with the side wall of the oil chamber (20) at both ends of the return pipe (13). The valves are both signal-connected to the controller.

3. The clinical exercise device for elderly cardiovascular medicine according to claim 2, wherein, The triggering components all include a fixed ring (12) coaxially sleeved on the main transmission shaft (10). A connecting rod (32) is fixedly connected between the fixed ring (12) and the inner bottom wall of the outer shell (2). A connecting sleeve (21) is also coaxially sleeved on the main transmission shaft (10). A first spring (22) is fixedly connected to the outer side wall of the connecting sleeve (21). The other end of the first spring (22) is fixedly connected to a flyweight (23). A trigger button (24) is fixedly connected to the inner side wall of the fixed ring (12). The trigger button (24) is located in the movement track of the flyweight (23). When the flyweight (23) contacts the trigger button (24) due to the centrifugal force of the rotation of the main transmission shaft (10), the controller controls the valve to be in a closed state. When the centrifugal force is not sufficient to drive the flyweight (23) to contact the inner side wall of the fixed ring (12) and cannot contact the trigger button (24), the controller controls the valve to be in an open state.

4. The clinical exercise device for elderly cardiovascular medicine according to claim 3, characterized in that, The valves are all provided with valve cores with a 60° taper angle at the end, and the valve cores are inserted into the valves to open or close the valves.

5. The clinical exercise device for geriatric cardiovascular medicine according to claim 4, characterized in that, The groove components include two inclined grooves (4) symmetrically arranged below the seat (9) and obliquely at 45° to the seat (9). Air bags (5) are fixedly connected in the inclined grooves (4). Air pipes (16) are respectively connected between the air bags (5) and the pneumatic cavity (15).

6. The clinical exercise device for elderly cardiovascular medicine according to claim 5, wherein, The liquid in the oil chamber (20) is silicon-based hydraulic oil.

7. The clinical exercise device for elderly cardiovascular medicine according to claim 6, characterized in that The axes of the sliding grooves (25) are all at an angle of 15° to the inner side wall of the main transmission shaft (10). The counterweight blocks (26) are all T-shaped, and the protruding ends of the counterweight blocks (26) are slidably matched with the sliding grooves (25).

8. The clinical exercise device for the elderly in the cardiovascular department according to claim 7, characterized in that, The sensing components include blood pressure sensors symmetrically arranged on both sides of the hand grip (7). The blood pressure sensors are all signal-connected to the controller.

9. The clinical exercise device for elderly cardiovascular medicine according to claim 8, characterized in that, A balance component for preventing the patient from falling off the seat (9) is fixedly connected to the inner bottom wall of the seat (9). Protection components for providing a fall prevention protection mechanism for the patient are fixedly connected to both sides of the seat (9). The balance component and the protection component are both signal-connected to the controller; The balance component includes an anti-tipping lever (29). A support (31) is hinged at the midpoint of the anti-tipping lever (29). The support (31) is fixedly connected to the inner bottom wall of the seat (9). Second springs (28) are provided at the tops of both ends of the lever (29). The other ends of the second springs (28) are fixedly connected to the inner top wall of the seat (9). An anti-tipping button (27) is provided on the inner top wall of the seat (9). The anti-tipping button (27) is signal-connected to the controller. The anti-tipping button (27) is located in the movement track of the lever (29). A number of pendulums (30) are suspended at the bottoms of both ends of the lever (29).

10. The clinical exercise device for geriatric cardiovascular medicine according to claim 9, characterized in that, The protection components all include a servo motor fixedly connected to one side of the seat (9). The servo motor is signal-connected to the controller. The output shaft of the servo motor is coaxially fixedly connected with a transmission rod. An arc-shaped armrest frame (6) is coaxially fixedly connected to the transmission rod.

Images