Coronary artery bypass grafting postoperative rehabilitation training device

Abstract

The invention relates to the technical field of medical instruments, in particular to a coronary artery bypass postoperative rehabilitation training device which comprises a bottom frame, supporting rods, a top frame, a seat plate and a back plate, the supporting rods are arranged at the top end of the bottom frame, the top ends of the supporting rods are connected with the bottom end of the top frame, and the seat plate is fixedly installed at the top end of the top frame. The back plate is fixedly installed on the rear side of the top end of the seat plate, the lifting assemblies are fixedly connected with the supporting rod and the top frame, the training assemblies are installed on the lifting assemblies, the handrail assemblies are arranged on the left side and the right side of the top frame respectively, and the lifting assemblies are fixedly connected with the supporting rod and the top frame. The training assembly is used for actively and passively exercising quadriceps femoris muscles of a patient; through an active training mode and a passive training mode, rehabilitation training of a patient is achieved, and flexibility is improved.

Description

Technical Field

[0001] This invention relates to the technical field of medical devices, and in particular to a rehabilitation training device for patients after coronary artery bypass grafting. Background Technology

[0002] Following coronary artery bypass grafting (CABG), patients commonly experience a rapid decline in lower limb muscle strength due to surgical trauma, prolonged bed rest, and cardiopulmonary bypass. This decline is particularly pronounced in the quadriceps femoris, a crucial muscle for maintaining knee stability and walking ability. Quadriceps weakness not only hinders early mobilization and delays overall rehabilitation but also significantly increases the risk of falls and deep vein thrombosis. Therefore, it is essential to begin safe and controlled lower limb rehabilitation training as early as possible during hospitalization, under close monitoring by medical staff. A scientific rehabilitation pathway requires training to begin with passive movement, where equipment guides the patient's leg through a prescribed range of knee flexion and extension movements to maintain muscle fiber length, promote venous return, and prevent muscle atrophy and joint stiffness. Once the patient's physical condition permits, active resistance training can be gradually introduced to rebuild quadriceps femoris strength and function.

[0003] Currently, there is a lack of specialized equipment for early lower limb rehabilitation in cardiac surgery wards. While some general rehabilitation equipment exists clinically, it is not specifically designed to address the limited cardiac reserve and the absolute need to avoid strenuous exercise in patients undergoing coronary artery bypass grafting. More specifically, for example, the "Rehabilitation Training Device for Patients with Myocardial Infarction and Coronary Artery Disease" disclosed in Chinese Utility Model Patent CN212090705U, although equipped with a pedal and spring mechanism allowing patients to actively exercise their legs by stepping on it, has a fundamental limitation: the device relies entirely on the patient's active effort to step on it, making it a purely active training mode that cannot achieve passive rehabilitation training of the quadriceps femoris muscle driven by a motor, suitable for the early postoperative period.

[0004] When this existing technology is applied to quadriceps rehabilitation in cardiac surgery, the following limitations are exposed: it cannot meet the needs of early passive training. For patients who are extremely weak in the early postoperative period and unable to actively extend their knees, the device is ineffective. It cannot simulate the techniques of a rehabilitation therapist and cannot drive the patient's lower leg to complete passive, rhythmic knee flexion and extension movements, thus missing the critical opportunity to prevent muscle atrophy and thrombosis in the early stages. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a rehabilitation training device for patients after coronary artery bypass grafting.

[0006] This invention discloses a rehabilitation training device for patients after coronary artery bypass grafting (CABG), comprising a base frame, support rods, a top frame, a seat plate, and a back plate. Multiple sets of support rods are disposed at the top of the base frame, with the top ends of each set connected to the bottom of the top frame. The seat plate is fixedly mounted at the top of the top frame, and the back plate is fixedly mounted on the rear side of the top of the seat plate. The device also includes armrest assemblies, a lifting assembly, and training assemblies, each consisting of two sets. The lifting assembly is fixedly connected to the support rods and the top frame, and the training assemblies are mounted on the lifting assembly. A set of armrest assemblies is disposed on each of the left and right sides of the top frame. The training assemblies are used to perform active and passive quadriceps muscle exercises for the patient. During use, the patient uses the armrest assemblies for support. With assistance, the patient sits on the seat board, their back supported by the backrest. The height of the training component is adjusted according to the patient's height using a lifting mechanism. Depending on the patient's recovery progress, for those recovering from a serious illness who are still relatively weak, the passive training mode is selected. The patient's lower legs are placed on the training component, which passively swings the legs, providing passive leg training. Once the patient has recovered and gained strength, the active training mode is activated, with the training component suspending the patient's legs. The patient actively swings their legs, and the training component applies a certain amount of weight to the swinging legs, providing targeted recovery training. Through these two modes, the patient's rehabilitation training is achieved, improving flexibility.

[0007] Preferably, the handrail assembly includes a handrail body, a handrail glove, and a locking bolt. The handrail glove is fitted onto the outer wall of the handrail body. A circular hole is provided on the handrail body, and a threaded groove is provided on the side end of the top frame. The locking bolt passes through the circular hole and is threadedly connected to the threaded groove. The locking bolt passes through the circular hole and is threadedly connected to the threaded groove, thereby completing the fixed installation of the handrail body. The patient's hand grips the handrail body through the handrail glove, which provides assistance. At the same time, staff can also move the device through the handrail body, improving convenience.

[0008] Preferably, the lifting assembly includes a No. 1 square tube, a No. 1 internally threaded tube, a No. 1 lead screw, a No. 1 rotary handle, and a No. 1 square rod. The bottom end of the No. 1 square tube is fixedly connected to the side end of the support rod, and the outer wall of the No. 1 square tube is fixedly connected to the front end of the top frame. The No. 1 square rod is slidably disposed inside the No. 1 square tube. The outer wall of the No. 1 square tube is provided with a No. 1 internally threaded tube, which communicates with the inside of the No. 1 square tube. The No. 1 lead screw is threadedly connected to the No. 1 internally threaded tube. A No. 1 rotary handle is fixedly disposed on the No. 1 lead screw. A training component is disposed at the top of the No. 1 square rod. According to the patient's leg length, the operator adjusts the position of the No. 1 square rod inside the No. 1 square tube. After adjustment, the operator rotates the No. 1 lead screw through the No. 1 rotary handle, thereby causing the No. 1 lead screw, in cooperation with the No. 1 internally threaded tube, to press and fix the side wall of the No. 1 square rod inside the No. 1 square tube, thus completing the height adjustment of the training component. This allows for corresponding adjustments based on the leg length of different patients, improving flexibility.

[0009] Preferably, the training assembly includes a housing, a rotating shaft, a second locking bolt, a second square tube, a second sliding sleeve, a second internally threaded tube, a second lead screw, a second throttle, a guide roller, a dual-axis motor, and a counterweight assembly. The housing is fixedly mounted on the top of the first square tube. The housing is cylindrical, and a dual-axis motor is fixedly mounted inside the housing. Each of the two output ends of the dual-axis motor has a rotating shaft. The two rotating shafts are rotatably connected to the housing via bearings. The first rotating shaft is fixedly connected to the second square tube via the second locking bolt. A second sliding sleeve is slidably mounted on the second square tube. A second internally threaded tube is fixedly mounted on the second sliding sleeve. The second lead screw is threadedly connected to the second internally threaded tube. A second throttle is fixedly mounted on the second lead screw. The guide roller is rotatably connected to the second square tube. A counterweight assembly is mounted on the second rotating shaft. During use, when the patient is weak, the second sliding sleeve is adjusted on the second square tube according to the patient's leg length. After the position is adjusted, medical staff rotate the No. 2 screw using the No. 2 throttle, causing the No. 2 screw to press against the side wall of the No. 2 square tube with the cooperation of the No. 2 internal thread tube, thus completing the height adjustment of the guide roller. The medical staff place the patient's lower leg in front of the guide roller, and then start the dual-axis motor through the controller. The dual-axis motor drives the No. 2 square tube to swing back and forth at a certain angle through the first set of rotating shafts, further causing the guide roller to passively train the patient's leg. At the same time, the guide roller rotates adaptively. At this time, the weight of the counterweight component can be reduced to reduce the operating load of the dual-axis motor. When the patient needs to perform active training, after adjusting the height of the guide roller, the controller keeps the dual-axis motor in the stopped state. The patient extends the leg to the back of the guide roller and lifts the leg, causing the guide roller to passively lift. At the same time, the weight of the counterweight component is adjusted according to the patient's leg strength, allowing the patient to perform gradual active training.

[0010] Preferably, the counterweight assembly includes a No. 3 square tube, a No. 3 sliding sleeve, a No. 3 internally threaded tube, a No. 3 lead screw, a No. 3 throttle, a mounting rod, a counterweight plate, a connecting plate, a No. 3 locking bolt, and a limiting component. The No. 3 square tube is fixedly connected to the second set of rotating shafts via the No. 3 locking bolt. A connecting plate is fixedly installed between the No. 2 and No. 3 square tubes. The No. 3 sliding sleeve is slidably fitted onto the outside of the No. 3 square tube. The No. 3 internally threaded tube is installed on the No. 3 sliding sleeve. The No. 3 lead screw is threadedly connected to the No. 3 internally threaded tube. A No. 3 throttle is fixedly installed on the No. 3 lead screw. A No. 3 throttle is fixedly installed on the No. 3 sliding sleeve. Multiple movably fitted on the mounting rod are... The system includes multiple counterweight discs, with a limiting component on the mounting rod. During passive exercise, the counterweight discs separate from the mounting rod, reducing the load on the dual-axis motor. During active quadriceps rehabilitation training, medical staff can attach the appropriate number of counterweight discs to the mounting rod as needed, and use the limiting component to prevent the discs from falling off. The patient's legs are positioned behind the guide rollers, and they perform leg-raising movements. This causes the No. 3 square tube to swing synchronously with the No. 2 square tube under the coordination of two sets of rotating shafts and a connecting plate. Simultaneously, the multiple counterweight discs provide weight-bearing training for the patient, enabling active training and improving flexibility.

[0011] Preferably, the limiting component includes slots, insert rods, limiting blocks, and rubber sleeves. Multiple sets of slots are evenly spaced on the mounting rod, and an insert rod is located at the bottom of the limiting block. A rubber sleeve is fitted onto the insert rod. A suitable number of counterweight discs are selected and fitted onto the mounting rod. Then, the insert rods are inserted into the corresponding set of slots, with the rubber sleeve contacting the inner wall of that set of slots. The limiting block limits the counterweight discs located away from the third sliding sleeve, preventing them from separating from the mounting rod during swinging and improving safety.

[0012] Preferably, it also includes anti-slip sleeves, with a set of anti-slip sleeves fixedly fitted at each of the four corners of the bottom frame; the four sets of anti-slip sleeves cooperate with each other to provide stable support for the device, while the anti-slip sleeves increase the friction with the support surface, further improving stability.

[0013] Preferably, the device also includes a seat cushion and a back cushion. The seat cushion is provided at the top of the seat board, and the back cushion is provided at the front of the back board. The patient sits on the seat board with the seat cushion, and the back board supports the patient's back with the back cushion, thereby improving comfort.

[0014] Preferably, it also includes grippers, with a set of grippers fixedly installed at the top of each connecting plate; when the patient lifts their leg against the guide roller, the patient's hands grasp a set of grippers and pull backward, thereby exercising the patient's arm muscles and achieving a variety of exercises.

[0015] Preferably, the outer wall of the gripper is provided with anti-slip texture; the patient grips the gripper firmly through the anti-slip texture, reducing the occurrence of the gripper slipping.

[0016] Compared with the prior art, the beneficial effects of this invention are as follows: During use, the patient sits on the seat with the armrest assembly as an aid, and their back is supported by the backrest. The height of the training assembly is adjusted according to the patient's height using the lifting assembly. Depending on the patient's recovery level, for those recovering from a serious illness who are still relatively weak, the passive training mode is selected, where the patient's lower legs are placed on the training assembly, which causes the patient's legs to swing passively, achieving passive leg training. When the patient has recovered for a period of time and has more strength, the active training mode is activated, where the patient actively swings their legs. Simultaneously, the training assembly applies a certain load to the swinging legs, allowing for targeted recovery training. Through these two modes, the patient's rehabilitation training is achieved, improving flexibility. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the isometric structure of the present invention; Figure 2 This is an exploded structural diagram of the present invention; Figure 3 This is an enlarged structural diagram of the base plate and back plate, etc. Figure 4 This is an enlarged structural diagram of the top frame and the main armrest, etc. Figure 5 This is an enlarged structural diagram of the guide rollers and counterweight disc, etc. Figure 6 This is a schematic diagram of the exploded structure of square tube No. 1 and square tube No. 2, etc. Figure 7 This is an enlarged structural diagram of the No. 1 throttle and the No. 1 square rod, etc. Figure 8 This is an enlarged structural diagram of the dual-axis motor and gripper, among other components. Figure 9 yes Figure 8 A magnified schematic diagram of part A in the middle.

[0018] In the attached diagram, the following markings are used: 101, base frame; 102, support rod; 103, top frame; 104, seat plate; 105, back plate; 106, anti-slip sleeve; 107, seat cushion; 108, back cushion; 201, armrest body; 202, armrest sleeve; 203, No. 1 locking bolt; 301, No. 1 square tube; 302, No. 1 internal threaded tube; 303, No. 1 lead screw; 304, No. 1 throttle; 305, No. 1 square rod; 401, housing; 402, rotating shaft; 403, No. 2 locking bolt; 404, No. 2 square tube. ; 405, No. 2 sliding sleeve; 406, No. 2 internal threaded tube; 407, No. 2 lead screw; 408, No. 2 throttle; 409, guide roller; 410, dual-shaft motor; 501, No. 3 square tube; 502, No. 3 sliding sleeve; 503, No. 3 internal threaded tube; 504, No. 3 lead screw; 505, No. 3 throttle; 506, mounting rod; 507, counterweight plate; 508, connecting plate; 509, No. 3 locking bolt; 510, gripper; 601, slot; 602, insertion rod; 603, limit block; 604, rubber sleeve. Detailed Implementation

[0019] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0020] Example 1 like Figures 1 to 9 The present invention discloses a post-coronary artery bypass graft rehabilitation training device, comprising a base frame 101, support rods 102, a top frame 103, a seat plate 104, and a back plate 105. Multiple sets of support rods 102 are provided at the top of the base frame 101, and the tops of the multiple sets of support rods 102 are all connected to the bottom of the top frame 103. The seat plate 104 is fixedly installed at the top of the top frame 103, and the back plate 105 is fixedly installed on the rear side of the top of the seat plate 104. The device also includes armrests, a lifting assembly, and training components. There are two sets of both the lifting assembly and the training components. The lifting assembly is fixedly connected to the support rods 102 and the top frame 103, and the training components are installed on the lifting assembly. A set of armrests is provided on each of the left and right sides of the top frame 103. The training components are used to perform active and passive quadriceps muscle exercises for the patient. The handrail assembly includes a handrail body 201, a handrail sleeve 202, and a first locking bolt 203. The handrail sleeve 202 is fitted on the outer wall of the handrail body 201. A round hole is provided on the handrail body 201. A threaded groove is provided on the side end of the top frame 103. The first locking bolt 203 passes through the round hole and is threadedly connected to the threaded groove. The lifting assembly includes a first square tube 301, a first internal threaded tube 302, a first lead screw 303, a first throttle 304, and a first square rod 305. The bottom end of the first square tube 301 is fixedly connected to the side end of the support rod 102, and the outer wall of the first square tube 301 is fixedly connected to the front end of the top frame 103. The first square rod 305 is slidably disposed inside the first square tube 301. The outer wall of the first square tube 301 is provided with the first internal threaded tube 302, which communicates with the interior of the first square tube 301. The first lead screw 303 is threadedly connected to the first internal threaded tube 302. The first throttle 304 is fixedly disposed on the first lead screw 303, and a training component is disposed at the top of the first square rod 305. The training components include a housing 401, a rotating shaft 402, a second locking bolt 403, a second square tube 404, a second sliding sleeve 405, a second internally threaded tube 406, a second lead screw 407, a second throttle 408, a guide roller 409, a dual-axis motor 410, and a counterweight assembly. The housing 401 is fixedly mounted on the top of the first square rod 305. The housing 401 is cylindrical, and the dual-axis motor 410 is fixedly mounted inside the housing 401. Each of the two output ends of the dual-axis motor 410 is equipped with a rotating shaft 402. The two rotating shafts 402 are... The first set of rotating shafts 402 is rotatably connected to the housing 401 via bearings. The first set of rotating shafts 402 is fixedly connected to the second set of square tubes 404 via locking bolts 403. A second set of sliding sleeves 405 is slidably mounted on the second set of square tubes 404. A second set of internally threaded tubes 406 is fixedly mounted on the second set of sliding sleeves 405. A second set of lead screws 407 is threadedly connected to the second set of internally threaded tubes 406. A second set of throttle handles 408 is fixedly mounted on the second set of lead screws 407. A guide roller 409 is rotatably connected to the second set of square tubes 404. A counterweight assembly is mounted on the second set of rotating shafts 402.

[0021] In this embodiment, the first locking bolt 203 passes through the round hole and is threaded into the threaded groove, thereby completing the fixed installation of the handrail body 201. The patient's hand grips the handrail body 201 through the handrail glove 202, providing assistance. Simultaneously, staff can move the device using the handrail body 201. Based on the patient's leg length, the staff adjusts the position of the first square rod 305 inside the first square tube 301. After adjustment, the staff rotates the first screw 303 using the first throttle 304, causing the screw 303, in cooperation with the first internal threaded tube 302, to press and fix the side wall of the first square rod 305 inside the first square tube 301, thus completing the height adjustment of the training component. When the patient is weak, the position of the second sliding sleeve 405 on the second square tube 404 is adjusted according to the patient's leg length. After adjustment, medical staff rotates the second screw 407 using the second throttle 408, thereby adjusting the position of the second screw... With the cooperation of the second internal threaded tube 406, 407 presses against the side wall of the second square tube 404, thereby completing the height adjustment of the guide roller 409. Medical staff place the patient's lower leg in front of the guide roller 409, and then start the housing 401 through the controller (not shown in the figure), so that the dual-axis motor 410 drives the second square tube 404 to swing back and forth at a certain angle through the first set of rotating shafts 402, further causing the guide roller 409 to carry the patient's leg for passive training. At the same time, the guide roller 409 rotates adaptively. At this time, the weight of the counterweight component can be reduced to reduce the operating load of the dual-axis motor 410. When the patient needs to perform active training, after adjusting the height of the guide roller 409, the controller keeps the dual-axis motor 410 in the stopped state, the patient's leg extends to the back of the guide roller 409, the patient lifts the leg, causing the guide roller 409 to be passively lifted. At the same time, according to the patient's leg strength, the weight of the counterweight component is adjusted so that the patient can perform active training in a gradual manner.

[0022] Example 2 like Figures 1 to 9 As shown, a post-coronary artery bypass graft rehabilitation training device of the present invention includes a base frame 101, support rods 102, a top frame 103, a seat plate 104, and a back plate 105. Multiple sets of support rods 102 are provided at the top of the base frame 101, and the tops of the multiple sets of support rods 102 are all connected to the bottom of the top frame 103. The seat plate 104 is fixedly installed at the top of the top frame 103, and the back plate 105 is fixedly installed on the rear side of the top of the seat plate 104. The device also includes armrests, a lifting assembly, and training components. There are two sets of both the lifting assembly and the training components. The lifting assembly is fixedly connected to the support rods 102 and the top frame 103, and the training components are installed on the lifting assembly. A set of armrests is provided on each of the left and right sides of the top frame 103. The training components are used to perform active and passive quadriceps muscle exercises for the patient. The handrail assembly includes a handrail body 201, a handrail sleeve 202, and a first locking bolt 203. The handrail sleeve 202 is fitted on the outer wall of the handrail body 201. A round hole is provided on the handrail body 201. A threaded groove is provided on the side end of the top frame 103. The first locking bolt 203 passes through the round hole and is threadedly connected to the threaded groove. The lifting assembly includes a first square tube 301, a first internal threaded tube 302, a first lead screw 303, a first throttle 304, and a first square rod 305. The bottom end of the first square tube 301 is fixedly connected to the side end of the support rod 102, and the outer wall of the first square tube 301 is fixedly connected to the front end of the top frame 103. The first square rod 305 is slidably disposed inside the first square tube 301. The outer wall of the first square tube 301 is provided with the first internal threaded tube 302, which communicates with the interior of the first square tube 301. The first lead screw 303 is threadedly connected to the first internal threaded tube 302. The first throttle 304 is fixedly disposed on the first lead screw 303, and a training component is disposed at the top of the first square rod 305. The training components include a housing 401, a rotating shaft 402, a second locking bolt 403, a second square tube 404, a second sliding sleeve 405, a second internally threaded tube 406, a second lead screw 407, a second throttle 408, a guide roller 409, a dual-axis motor 410, and a counterweight assembly. The housing 401 is fixedly mounted on the top of the first square rod 305. The housing 401 is cylindrical, and the dual-axis motor 410 is fixedly mounted inside the housing 401. Each of the two output ends of the dual-axis motor 410 is equipped with a rotating shaft 402. The two rotating shafts 402 are... The first set of rotating shafts 402 is rotatably connected to the housing 401 via bearings. The first set of rotating shafts 402 is fixedly connected to the second set of square tubes 404 via locking bolts 403. A second set of sliding sleeves 405 is slidably arranged on the second set of square tubes 404. A second set of internally threaded tubes 406 is fixedly arranged on the second set of sliding sleeves 405. A second set of lead screws 407 is threadedly connected to the second set of internally threaded tubes 406. A second set of throttle handles 408 is fixedly arranged on the second set of lead screws 407. A guide roller 409 is rotatably connected to the second set of square tubes 404. A counterweight assembly is arranged on the second set of rotating shafts 402. The counterweight assembly includes a No. 3 square tube 501, a No. 3 sliding sleeve 502, a No. 3 internally threaded tube 503, a No. 3 lead screw 504, a No. 3 throttle 505, a mounting rod 506, a counterweight plate 507, a connecting plate 508, a No. 3 locking bolt 509, and a limiting assembly. The No. 3 square tube 501 is fixedly connected to the second set of rotating shafts 402 via the No. 3 locking bolt 509. A connecting plate 508 is fixedly installed between the No. 2 square tube 404 and the No. 3 square tube 501. The 502 sliding sleeve is on the outside of the No. 3 square tube 501. The No. 3 internal thread tube 503 is installed on the No. 3 sliding sleeve 502. The No. 3 lead screw 504 is threadedly connected to the No. 3 internal thread tube 503. The No. 3 throttle 505 is fixedly installed on the No. 3 lead screw 504. The No. 3 mounting rod 506 is fixedly installed on the No. 3 sliding sleeve 502. Multiple sets of counterweight plates 507 are movably mounted on the mounting rod 506. The mounting rod 506 is provided with a limit component. The limiting component includes a slot 601, a rod 602, a limiting block 603, and a rubber sleeve 604. The mounting rod 506 is provided with multiple sets of slots 601 at equal intervals. The bottom end of the limiting block 603 is provided with a rod 602, and a rubber sleeve 604 is fitted on the rod 602. It also includes anti-slip sleeves 106, seat cushions 107, back cushions 108, and grippers 510. A set of anti-slip sleeves 106 are fixedly fitted at the four corners of the bottom frame 101. A seat cushion 107 is provided at the top of the seat plate 104. A back cushion 108 is provided at the front end of the back plate 105. A set of grippers 510 is fixedly provided at the top of each set of connecting plates 508. The outer side of the grippers 510 is provided with anti-slip texture.

[0023] In this embodiment, the first locking bolt 203 passes through the round hole and is threaded into the threaded groove, thereby completing the fixed installation of the handrail body 201. The patient's hand grips the handrail body 201 through the handrail glove 202, providing assistance. Simultaneously, staff can also move the device using the handrail body 201. Based on the patient's leg length, the staff adjusts the position of the first square rod 305 inside the first square tube 301. After adjustment, the staff rotates the first lead screw 303 using the first throttle 304, causing the first lead screw 303 to engage with the first internal threaded tube 302, thus controlling the first square tube 301. The side wall of the first square rod 305 inside is tightened and fixed, thereby completing the height adjustment of the training component. When the patient is weak, the position of the second sliding sleeve 405 on the second square tube 404 is adjusted according to the length of the patient's leg. After adjustment, the medical staff rotates the second lead screw 407 through the second throttle 408, so that the second lead screw 407, in cooperation with the second internal thread tube 406, tightens against the side wall of the second square tube 404, thereby completing the height adjustment of the guide roller 409. The medical staff places the patient's lower leg in front of the guide roller 409, and then starts the dual-axis motor 410 through the controller, so that the dual-axis motor 410 passes through the first set of The rotating shaft 402 drives the second square tube 404 to reciprocate at a certain angle, further causing the guide roller 409 to passively train the patient's legs. Simultaneously, the guide roller 409 rotates adaptively, reducing the weight of the counterweight assembly and lessening the operating load on the dual-axis motor 410. When the patient needs active training, after adjusting the height of the guide roller 409, the controller keeps the dual-axis motor 410 stopped. The patient extends their legs to the rear of the guide roller 409 and lifts their legs, causing the guide roller 409 to passively lift. At the same time, the weight of the counterweight assembly is adjusted according to the patient's leg strength, allowing the patient to perform gradual training. In the progressive active training, when the patient performs active quadriceps rehabilitation training, medical staff will, as needed, place the corresponding number of counterweight discs 507 on the mounting rod 506, and then insert the insertion rod 602 into the corresponding set of slots 601. The rubber sleeve 604 will contact the inner wall of the set of slots 601. The set of counterweight discs 507 away from the third sliding sleeve 502 will be limited by the limiting block 603 to prevent the counterweight discs 507 from falling off. The patient's leg is behind the guide roller 409 and he / she will lift his / her leg, so that the third square tube 501 will swing synchronously with the second square tube 404 under the cooperation of the two sets of rotating shafts 402 and a set of connecting plates 508.

[0024] The main functions achieved by this invention are: 1. To enable patients to undergo both active and passive rehabilitation training; 2. During passive training, the two sets of rotating shafts 402 drive the No. 2 square tube 404 and the No. 3 square tube 501 to swing synchronously. During active training, the two sets of rotating shafts 402 provide rotational support for the No. 2 square tube 404 and the No. 3 square tube 501.

[0025] The present invention discloses a post-coronary artery bypass graft rehabilitation training device. Its installation, connection, and setting methods are all common mechanical methods, and any method that achieves the beneficial effects can be implemented. Two sets of training components are symmetrically arranged, and two sets of dual-axis motors 410 are controlled by a controller to make the dual-axis motors 410 reciprocate at a certain angle. The controller is installed on the side of the top frame 103. Since the controller controlling the dual-axis motors 410 to reciprocate at a certain angle is existing technology, it will not be described again. The controller, dual-axis motors 410, and counterweight plate 507 of the post-coronary artery bypass graft rehabilitation training device of the present invention are commercially available. Those skilled in the art only need to install and operate it according to the accompanying instruction manual, without requiring any creative effort from those skilled in the art.

[0026] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A rehabilitation training device for post-coronary artery bypass grafting, comprising a base frame (101), support rods (102), a top frame (103), a seat plate (104), and a back plate (105), wherein the top of the base frame (101) is provided with multiple sets of support rods (102), the tops of the multiple sets of support rods (102) are all connected to the bottom of the top frame (103), the top of the top frame (103) is fixedly installed with the seat plate (104), and the back plate (105) is fixedly installed on the rear side of the top of the seat plate (104), characterized in that, It also includes a handrail assembly, a lifting assembly, and a training assembly. There are two sets of the lifting assembly and the training assembly. The lifting assembly is fixedly connected to the support rod (102) and the top frame (103). The training assembly is installed on the lifting assembly. A set of handrail assemblies is provided on the left and right sides of the top frame (103). The training assembly is used to perform active and passive quadriceps muscle exercises on the patient.

2. The post-coronary artery bypass graft rehabilitation training device as described in claim 1, characterized in that, The handrail assembly includes a handrail body (201), a handrail sleeve (202), and a locking bolt (203). The handrail sleeve (202) is fitted on the outer wall of the handrail body (201). A round hole is provided on the handrail body (201). A threaded groove is provided on the side end of the top frame (103). The locking bolt (203) passes through the round hole and is threadedly connected to the threaded groove.

3. The post-coronary artery bypass graft rehabilitation training device as described in claim 1, characterized in that, The lifting assembly includes a first square tube (301), a first internal threaded tube (302), a first lead screw (303), a first throttle (304), and a first square rod (305). The bottom end of the first square tube (301) is fixedly connected to the side end of the support rod (102). The outer wall of the first square tube (301) is fixedly connected to the front end of the top frame (103). The first square rod (305) is slidably disposed inside the first square tube (301). The outer wall of the first square tube (301) is provided with a first internal threaded tube (302). The first internal threaded tube (302) communicates with the inside of the first square tube (301). The first lead screw (303) is threadedly connected to the first internal threaded tube (302). A first throttle (304) is fixedly disposed on the first lead screw (303). A training component is disposed at the top of the first square rod (305).

4. The post-coronary artery bypass graft rehabilitation training device as described in claim 3, characterized in that, The training components include a housing (401), a rotating shaft (402), a second locking bolt (403), a second square tube (404), a second sliding sleeve (405), a second internal threaded tube (406), a second lead screw (407), a second throttle (408), a guide roller (409), a dual-axis motor (410), and a counterweight assembly. The housing (401) is fixedly mounted on the top of the first square rod (305). The housing (401) is cylindrical, and a dual-axis motor (410) is fixedly mounted inside the housing (401). Each of the two output ends of the dual-axis motor (410) is equipped with a rotating shaft (402). The two rotating shafts (409, 4000, 401, 402, 403, 404, 405, 406, 407, 408, 409, 40 ... 2) The first set of rotating shafts (402) are rotatably connected to the housing (401) via bearings. The first set of rotating shafts (402) is fixedly connected to the second set of square tubes (404) via the second set of locking bolts (403). The second set of square tubes (404) is slidably provided with the second set of sliding sleeves (405). The second set of sliding sleeves (405) is fixedly provided with the second set of internal threaded tubes (406). The second set of lead screws (407) is threadedly connected to the second set of internal threaded tubes (406). The second set of lead screws (407) is fixedly provided with the second set of throttle handles (408). The guide roller (409) is rotatably connected to the second set of square tubes (404). The second set of rotating shafts (402) is provided with a counterweight assembly.

5. The post-coronary artery bypass graft rehabilitation training device as described in claim 4, characterized in that, The counterweight assembly includes a No. 3 square tube (501), a No. 3 sliding sleeve (502), a No. 3 internally threaded tube (503), a No. 3 lead screw (504), a No. 3 throttle (505), a mounting rod (506), a counterweight plate (507), a connecting plate (508), a No. 3 locking bolt (509), and a limiting assembly. The No. 3 square tube (501) is fixedly connected to the second set of rotating shafts (402) via the No. 3 locking bolt (509). A connecting plate (508) is fixedly installed between the No. 2 square tube (404) and the No. 3 square tube (501). The sliding sleeve (502) is slidably mounted on the outside of the No. 3 square tube (501). The No. 3 internal thread tube (503) is installed on the No. 3 sliding sleeve (502). The No. 3 lead screw (504) is threadedly connected to the No. 3 internal thread tube (503). The No. 3 throttle (505) is fixedly mounted on the No. 3 lead screw (504). The No. 3 sliding sleeve (502) is fixedly mounted on the mounting rod (502). Multiple sets of counterweight discs (507) are movably mounted on the mounting rod (506). The mounting rod (506) is provided with a limit component.

6. The post-coronary artery bypass graft rehabilitation training device as described in claim 5, characterized in that, The limiting component includes a slot (601), a rod (602), a limiting block (603), and a rubber sleeve (604). Multiple slots (601) are evenly spaced on the mounting rod (506). A rod (602) is provided at the bottom of the limiting block (603), and a rubber sleeve (604) is fitted on the rod (602).

7. The post-coronary artery bypass graft rehabilitation training device as described in claim 1, characterized in that, It also includes anti-slip sleeves (106), and a set of anti-slip sleeves (106) is fixedly fitted at each of the four corners of the bottom frame (101).

8. The post-coronary artery bypass graft rehabilitation training device as described in claim 1, characterized in that, It also includes a seat cushion (107) and a back cushion (108), with the seat cushion (107) provided at the top of the seat plate (104) and the back cushion (108) provided at the front end of the back plate (105).

9. A post-coronary artery bypass graft rehabilitation training device as described in claim 5, characterized in that, It also includes grippers (510), with a set of grippers (510) fixedly installed at the top of each connecting plate (508).

10. A post-coronary artery bypass graft rehabilitation training device as described in claim 9, characterized in that, The outer wall of the gripper (510) is provided with anti-slip texture.

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