Knee joint rehabilitation exercise device

Abstract

This invention discloses a knee joint rehabilitation exercise device, including a medical frame, a support assembly, a slide rail, a magnetic rod, an electrical mechanism, and a control mechanism. The support assembly includes a pair of first connecting rods, with a first leg rest fixedly connected to each pair of first connecting rods. The first connecting rods are rotatably connected to the medical frame. A second connecting rod is rotatably connected to the end of the first connecting rod away from the medical frame, and the end of the second connecting rod away from the first connecting rod is rotatably connected to the medical frame. A third hinged column and a second leg rest are fixedly connected to the pair of second connecting rods. Compared with the prior art, the knee joint rehabilitation exercise device of this invention can flexibly adjust the range of motion and intensity of joint movement according to the patient's specific rehabilitation condition, which helps to improve the efficiency and safety of rehabilitation training, promote the patient's full recovery, reduce the occurrence of complications, and help the patient recover knee joint function quickly and safely to the greatest extent possible.

Description

Technical Field

[0001] This invention relates to the field of medical rehabilitation equipment technology, specifically a knee joint rehabilitation exercise device. Background Technology

[0002] The knee joint, as the largest and most complex joint in the human body, bears the core functions of supporting body weight, enabling flexible movement of the lower limbs, cushioning impact, and maintaining body stability. Its normal operation depends on the coordinated work of multiple structures, including bones, cartilage, ligaments, and muscles.

[0003] After knee surgery, scientific rehabilitation exercises are crucial for promoting joint healing and restoring function. However, postoperative rehabilitation presents a core contradiction: on the one hand, adequate rest is necessary to protect the wound and prevent secondary injury; on the other hand, prolonged inactivity can lead to severe muscle atrophy, hindering the recovery process.

[0004] To balance this contradiction, assistive rehabilitation exercise equipment has emerged, its core function being to help patients perform basic activities such as stretching within a safe range, gradually initiating the recovery process. However, current equipment generally suffers from a key problem: a lack of flexibility. Specifically, due to individual differences in the severity of injury, type of surgery, and stage of rehabilitation, existing equipment struggles to specifically adjust the range of motion and intensity of movement. This deficiency can pose direct risks in practical use, ranging from affecting recovery efficiency due to inappropriate intensity to potentially causing wound dehiscence and further ligament damage, resulting in additional harm to the patient.

[0005] Therefore, in order to address the aforementioned technical problems, it is necessary to provide a knee joint rehabilitation exercise device. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the purpose of this invention is to provide a knee joint rehabilitation exercise device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, a specific embodiment of the present invention provides a knee joint rehabilitation exercise device, including a medical frame, a support assembly, a slide rail, a magnetic rod, an electrical mechanism, and a control mechanism. The support assembly includes a pair of first connecting rods, with a first leg rest fixedly connected to the pair of first connecting rods. The first connecting rods are rotatably connected to the medical frame. A second connecting rod is rotatably connected to the end of the first connecting rod away from the medical frame, and the end of the second connecting rod away from the first connecting rod is rotatably connected to the medical frame. A third hinge column and a second leg rest are fixedly connected to the pair of second connecting rods. An electronic slider is slidably connected to the slide rail. The electronic slider has an integrally formed connecting block, and a pair of first fixing plates are fixedly connected to the connecting block. A hinge block is rotatably connected to the pair of first fixing plates, and the end of the hinge block away from the first fixing plate is fixedly connected to the foot pedal. A pair of bases are fixedly connected to the medical frame, and the magnetic rod is fixedly connected between the pair of bases. The connecting block has a through hole for the magnetic rod, and the connecting block is slidably connected to the magnetic rod. The power mechanism is used to provide power to the knee joint rehabilitation exercise equipment. The electronic slider and the magnetic rod are both electrically connected to the control mechanism, and the control mechanism is equipped with a human-computer interaction device.

[0008] In one or more embodiments of the present invention, a first hinge post is fixedly connected to the first connecting rod, a second fixing plate is rotatably connected to the first hinge post, the second fixing plate is welded to the medical frame, a second hinge post is fixedly connected to the end of the first connecting rod away from the first hinge post, and a third hinge post matching the second hinge post is fixedly connected to the second connecting rod.

[0009] In one or more embodiments of the present invention, a telescopic cylinder is fixedly connected to the third hinge column, and an adjusting plate is fixedly connected to the piston rod of the telescopic cylinder.

[0010] In one or more embodiments of the present invention, the knee joint rehabilitation exercise device further includes a pair of protective bags, the pair of protective bags being fixedly connected to a pair of third hinge columns, an air pump being fixedly connected to the second hinge column, an air supply pipe being fixedly connected to the air pump, the end of the air supply pipe away from the air pump being fixedly connected to the protective bag, and a pressure sensor being fixedly connected inside the protective bag.

[0011] In one or more embodiments of the present invention, an electromagnetic pressure relief valve is fixedly installed on the air pump.

[0012] In one or more embodiments of the present invention, reinforcing ribs are fixedly connected to the inner wall of the protective bladder.

[0013] In one or more embodiments of the present invention, a microwave generator, a smart chip, and an NFC thermistor are fixedly connected to the inner wall of the protective bag at the end away from the third hinge post. The microwave generator is electrically connected to the power mechanism, and the smart chip and the NFC thermistor are both electrically connected to the control mechanism.

[0014] In one or more embodiments of the present invention, the microwave generator is provided with a gallium nitride power amplifier.

[0015] In one or more embodiments of the present invention, an electromagnetic wave generator is fixedly connected to the inner wall of the protective bag at the end away from the third hinge post, and the electromagnetic wave generator is provided with a Hall effect sensor and a pair of magnetic field coils.

[0016] In one or more embodiments of the present invention, the power mechanism is provided with a connecting wire and a conduit, the conduit is fixedly connected to the medical frame, quick connectors are fixedly installed at both ends of the conduit, and the connecting wire is detachably connected to the quick connectors.

[0017] Compared with the prior art, the knee joint rehabilitation exercise device of the present invention can flexibly adjust the range of motion and intensity of joint movement according to the specific rehabilitation condition of the patient, which helps to improve the efficiency and safety of rehabilitation training, promote the patient's full recovery, reduce the occurrence of complications, and help the patient recover knee joint function quickly and safely to the greatest extent. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a knee joint rehabilitation exercise device according to an embodiment of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a knee joint rehabilitation exercise device according to an embodiment of the present invention. Figure 2 ; Figure 3 for Figure 2 Schematic diagram of the structure at point A; Figure 4 This is a cross-sectional view of a knee joint rehabilitation exercise device according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a support component of a knee joint rehabilitation exercise device according to an embodiment of the present invention; Figure 6 for Figure 5 Schematic diagram of the structure at point A; Figure 7 This is a cross-sectional view of the protective bladder of a knee joint rehabilitation exercise device according to an embodiment of the present invention. Figure 1 ; Figure 8 This is a cross-sectional view of the protective bladder of a knee joint rehabilitation exercise device according to an embodiment of the present invention. Figure 2 ; Figure 9 This is a partial structural diagram of a knee joint rehabilitation exercise device according to an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures: 1. Medical frame; 11. Slide rail; 111. Electronic slider; 12. Base; 13. Magnetic rod; 14. Connecting block; 141. First fixing plate; 142. Hinge block; 2. First connecting rod; 21. First hinge post; 22. Second fixing plate; 23. Second hinge post; 24. First leg rest; 3. Second connecting rod; 31. Third hinge post; 32. Foot pedal; 321. Telescopic cylinder; 33. Adjusting plate; 34. Second leg rest; 4. Anti- 41. Protective bag; 42. Reinforcing rib; 43. Microwave generator; 44. Gallium nitride power amplifier; 45. Smart chip; 46. NFC thermistor; 47. Pressure sensor; 48. Electromagnetic wave generator; 49. Hall effect sensor; 40. Magnetic field coil; 50. Air pump; 51. Air supply pipe; 511. Electromagnetic pressure relief valve; 61. Electrical power mechanism; 62. Connecting wire; 63. Conduit; 64. Quick connector; 7. Control mechanism. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1, such as Figures 1 to 6As shown, a knee joint rehabilitation exercise device according to an embodiment of the present invention includes a medical frame 1, a support assembly, an electrical power mechanism 6, and a control mechanism 7. The support assembly includes a pair of first connecting rods 2, on which a first leg rest 24 for supporting the patient's thigh is bonded. The first connecting rods 2 are rotatably connected to the medical frame 1. A second connecting rod 3 is rotatably connected to the end of the first connecting rod 2 away from the medical frame 1. The end of the second connecting rod 3 away from the first connecting rod 2 is rotatably and slidably connected to the medical frame 1. A second leg rest 34 for supporting the patient's lower leg is bonded to the pair of second connecting rods 3. A foot pedal 32 is welded to the end of a third hinge post 31 away from the first connecting rod 2. A slide rail 11 is welded onto the medical frame 1. An electronic slider 111 is slidably connected to the slide rail 11. A connecting block 14 is integrally formed on the electronic slider 111. A pair of first fixing plates 141 are welded onto the connecting block 14. A hinge block 142 is rotatably connected to the pair of first fixing plates 141. The end of the hinge block 142 away from the first fixing plate 141 is welded to the foot pedal 32.

[0023] Specifically, the power supply mechanism 6 provides power to the knee joint rehabilitation exercise equipment. The electronic slider 111 and magnetic rod 13 are both electrically connected to the control mechanism 7, which is equipped with a human-computer interaction device. During exercise, the patient first sets the knee's range of motion via the control mechanism 7 according to the doctor's instructions. This angle is the angle between the second link 3 and the first link 2, and it varies depending on the position of the electronic slider 111 on the slide rail 11. In other words, by setting the distance the electronic slider 111 slides on the slide rail 11, the angle of the patient's knee joint movement can be controlled. After the patient's range of motion is set, the patient's thigh and lower leg are placed on the first leg rest 24 and the second leg rest 34, respectively. At this time, the patient's foot is on the foot pedal 32. The control mechanism 7 activates the electronic slider 111, causing it to slide on the slide rail 11, thus enabling leg movement. Furthermore, the sliding speed of the electronic slider 111 can be controlled via the control mechanism 7. By controlling the angle and speed, the system can be adapted to different patients and, similarly, to patients at different stages of rehabilitation.

[0024] Preferably, both the first leg rest 24 and the second leg rest 34 are equipped with straps to fix the patient's thighs and calves.

[0025] To enable the rotation of the first link 2 and the second link 3, a first hinge post 21 is welded to the first link 2, and a second fixing plate 22 is rotatably connected to the first hinge post 21. The second fixing plate 22 is welded to the medical frame 1. A second hinge post 23 is welded to the end of the first link 2 away from the first hinge post 21. A third hinge post 31 that matches the second hinge post 23 is welded to the second link 3. The second hinge post 23 and the third hinge post 31 can rotate relative to each other.

[0026] It should be noted that in the early stages of a patient's rehabilitation, simply using the electronic slider 111 to move the patient's knee joint is sufficient, effectively preventing the wound from reopening or the ligaments from re-injuring. However, as the patient gradually recovers, strength training is necessary.

[0027] Furthermore, the knee joint rehabilitation exercise device also includes a magnetic rod 13. A pair of bases 12 are welded onto the medical frame 1, and the magnetic rod 13 is welded between the bases 12. A connecting block 14 has a through hole for the magnetic rod 13, and the connecting block 14 is slidably connected to the magnetic rod 13. The magnetic rod 13 is electrically connected to the power supply mechanism 6. Specifically, the control mechanism 7 sends a control signal to the power supply mechanism 6, which then supplies electrical energy to the magnetic rod 13, energizing the coil inside the magnetic rod 13. The energized magnetic rod 13 generates magnetic force, increasing the resistance of the connecting block 14 as it slides on the magnetic rod 13. The amount of electrical energy supplied by the power supply mechanism 6 controls the resistance exerted by the magnetic rod 13 on the connecting block 14, thus adapting to different rehabilitation stages of the patient. In addition, the control mechanism 7 can also record the angle and intensity of the patient's exercise and compare this record with the planned exercise program, indicating whether the patient is over-exercising or under-exercising. This allows the patient to obtain accurate data, and exercising according to the plan is more beneficial for postoperative recovery of the knee joint.

[0028] Furthermore, a telescopic cylinder 321 is welded onto the third hinge column 31, and an adjusting plate 33 is welded onto the piston rod of the telescopic cylinder 321. By extending or retracting the piston rod on the telescopic cylinder 321, it can accommodate patients of different heights and leg lengths.

[0029] The technical solutions described in the above embodiments of this application have at least the following technical effects or advantages: Compared with the prior art, in this embodiment, the range of motion and intensity of joint movement can be flexibly adjusted according to the patient's specific rehabilitation condition. This will help improve the efficiency and safety of rehabilitation training, promote the patient's full recovery, reduce the occurrence of complications, and help the patient recover knee joint function quickly and safely to the greatest extent possible.

[0030] Example 2: Considering the long recovery period after knee surgery and the slow blood flow to the knee joint, which can lead to loss of vitality in the muscles and fascia, this application proposes the following technical solution to address the aforementioned technical problems: like Figure 2 , Figure 5 , Figure 6 and Figure 7As shown, the knee joint rehabilitation exercise device also includes a pair of protective bladders 4, which are respectively fixedly connected to a pair of third hinge columns 31. An air pump 5 is welded to the second hinge column 23, and an air supply pipe 51 is welded to the air pump 5. The end of the air supply pipe 51 away from the air pump 5 is welded to the protective bladder 4. An electromagnetic pressure relief valve 511 is fixedly installed on the air pump 5. A microwave generator 42, a smart chip 43, and an NFC thermistor 44 are bonded to the inner wall of the end of the protective bladder 4 away from the third hinge column 31. The microwave generator 42 is electrically connected to the power supply mechanism 6, and the smart chip 43 and the NFC thermistor 44 are electrically connected to the uniform control mechanism 7.

[0031] Specifically, the microwave generator 42 uses medical high-frequency continuous microwave technology to achieve local tissue thermotherapy through dipole oscillation effect. The microwave energy acts on the muscles, fascia and synovium of the knee joint. Water molecules and protein molecules in the muscle, fascia and synovial tissues oscillate at high frequency with the microwave electric field. The intermolecular friction generates endogenous heat, raising the local tissue temperature of the knee to 38-42℃. This temperature range can promote local vasodilation, increase blood flow velocity by 30%-50%, accelerate the metabolism of inflammatory mediators, relax spasmodic muscles, and relieve knee joint pain and stiffness.

[0032] During treatment, when the NFC thermistor 44 detects that the temperature of the protective bag 4 is ≥42℃, the smart chip 43 immediately sends a command to the power regulation circuit to reduce the power by 2-5W. If the temperature continues to rise to 43℃, the secondary protection is triggered, and the microwave output is suspended.

[0033] Simultaneously, during the patient's exercise, the power of the microwave generator 42 can be controlled and adjusted via the control mechanism 7. Furthermore, the control mechanism 7 includes a recovery cycle plan. Preferably, the initial power after meniscus repair surgery is 20-25W, after cruciate ligament reconstruction surgery it is 22-28W, and after total joint replacement surgery it is 18-22W.

[0034] During use, the treatment should be dynamically adjusted according to the recovery stage. Specifically, 2-4 weeks post-surgery, during the inflammation subsidence period, each treatment should last 10-12 minutes, with the power maintained at 20-25W and the temperature controlled at 38-40℃. 4-8 weeks post-surgery, during the functional recovery period, each treatment should last 12-15 minutes, with the power increased to 25-35W and the temperature controlled at 40-42℃. 8-12 weeks post-surgery, during the muscle strength remodeling period, if stiffness persists, the power can be increased to 35-40W, with the temperature not exceeding 42℃, and each treatment should last 15 minutes.

[0035] In addition, a gallium nitride power amplifier 421 is provided on the microwave generator 42. Compared with traditional Si power transistors, the microwave generator 42 has significantly improved efficiency, lower heat loss, and high frequency stability during use, avoiding fluctuations in treatment effects caused by frequency drift.

[0036] It should be noted that a reinforcing rib 41 is bonded to the inner wall of the protective bladder 4. The reinforcing rib 41 can increase the strength of the protective bladder 4. Furthermore, when the protective bladder 4 is deflated, the reinforcing rib 41 can support the protective bladder 4 to a certain height, preventing the inner wall of the protective bladder 4 from touching the microwave generator 42 or the smart chip 43, which would cause damage to the microwave generator 42 or the smart chip 43.

[0037] Furthermore, the protective bladder 4 is also equipped with a pressure sensor 45, which monitors the air pressure inside the protective bladder 4 in real time. When the air pressure is insufficient, a pressure replenishment signal is sent, and when the pressure is too high, a pressure relief signal is sent. This can prevent excessive pressure on the patient's knee joint and ensure that the protective bladder 4 fits snugly against the patient's knee joint, thus guaranteeing the quality and effectiveness.

[0038] The technical solutions in the above-described embodiments of this application have at least the following technical effects or advantages: Compared with the prior art, in this embodiment, it can accelerate blood flow in the knee joint, prevent muscle and fascia damage caused by slow blood flow, relax spasmodic muscles, relieve knee pain and stiffness, facilitate patient recovery, and shorten the patient's recovery period.

[0039] Example 3: Considering that microwave therapy is suitable for soft tissue injuries but has limited auxiliary effects on knee joint bone tissues, such as the patella and tibia, this application proposes the following technical solution to address the aforementioned technical problems: like Figure 2 , Figure 7 and Figure 8 As shown, an electromagnetic wave generator 46 is adhered to the inner wall of the protective bladder 4 at the end away from the third hinge post 31. The electromagnetic wave generator 46 is equipped with a Hall effect sensor 461 and a pair of magnetic field coils 462. Specifically, the Hall effect sensor 461 is located between the pair of magnetic field coils 462. For patients with patellar or tibial injuries, a knee joint rehabilitation exercise device with an electromagnetic wave generator 46 is selected. The microwave generator 42 uses low-frequency pulsed electromagnetic field technology, based on the piezoelectric effect and bone conduction theory to promote bone repair. Specifically, a sinusoidal alternating magnetic field of 1-50Hz is generated by the coil, with a magnetic field strength of 0.1-2mT. When applied to the patella and tibial plateau around the knee joint, the charge on the bone cell membrane shifts, generating a change in transmembrane potential, promoting osteoblast proliferation and collagen synthesis. At the same time, the magnetic field can accelerate local blood circulation, providing sufficient nutrition for bone healing, such as calcium ions and oxygen, shortening the callus formation time. Clinical data shows that it can shorten the time by 15%-20%.

[0040] Preferably, the protective bladder 4 is detachably connected to the third hinge post 31, and different protective bladders 4 can be replaced according to different patients.

[0041] Furthermore, such as Figure 9As shown, the power supply mechanism 6 is equipped with a connecting wire 61 and a conduit 62. The conduit 62 is welded to the medical frame 1, and quick connectors 621 are fixedly installed at both ends of the conduit 62. The connecting wire 61 is detachably connected to the quick connectors 621. The placement of the power supply mechanism 6 and the control mechanism 7 can be selected according to the patient's left or right leg for ease of use.

[0042] The technical solutions in the above embodiments of this application have at least the following technical effects or advantages: Compared with the prior art, in this embodiment, it can promote osteoblast proliferation and collagen synthesis, accelerate local blood circulation, provide sufficient nutrition for bone healing, and improve the speed of bone healing.

[0043] Obviously, the above-described embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and variations.

Claims

1. A knee joint rehabilitation exercise device, comprising a medical frame (1), characterized in that, Also includes: The support assembly includes a pair of first links (2), a first leg rest (24) fixedly connected to the pair of first links (2), the first links (2) being rotatably connected to the medical frame (1), a second link (3) being rotatably connected to the end of the first link (2) away from the medical frame (1), the end of the second link (3) away from the first link (2) being rotatably connected to the medical frame (1), and a third hinge column (31) and a second leg rest (34) fixedly connected to the pair of second links (3). A slide rail (11) is slidably connected to an electronic slider (111). A connecting block (14) is integrally formed on the electronic slider (111). A pair of first fixing plates (141) are fixedly connected to the connecting block (14). A hinge block (142) is rotatably connected to the pair of first fixing plates (141). One end of the hinge block (142) away from the first fixing plate (141) is fixedly connected to the foot pedal (32). A magnetic rod (13) is fixedly connected to a pair of bases (12) on the medical frame (1). The magnetic rod (13) is fixedly connected between the pair of bases (12). A through hole is opened on the connecting block (14) and the magnetic rod (13). The connecting block (14) is slidably connected to the magnetic rod (13). The power supply mechanism (6) is used to provide power to the knee joint rehabilitation exercise equipment; The control mechanism (7), the electronic slider (111) and the magnetic rod (13) are all electrically connected to the control mechanism (7), and the control mechanism (7) is equipped with a human-computer interaction device.

2. The knee joint rehabilitation exercise device according to claim 1, characterized in that, A first hinge post (21) is fixedly connected to the first connecting rod (2), and a second fixing plate (22) is rotatably connected to the first hinge post (21). The second fixing plate (22) is welded to the medical frame (1). A second hinge post (23) is fixedly connected to one end of the first connecting rod (2) away from the first hinge post (21). A third hinge post (31) matching the second hinge post (23) is fixedly connected to the second connecting rod (3).

3. The knee joint rehabilitation exercise device according to claim 1, characterized in that, A telescopic cylinder (321) is fixedly connected to the third hinge column (31), and an adjusting plate (33) is fixedly connected to the piston rod of the telescopic cylinder (321).

4. The knee joint rehabilitation exercise device according to claim 2, characterized in that, The knee joint rehabilitation exercise device also includes a pair of protective bags (4), which are respectively fixedly connected to a pair of third hinge columns (31). An air pump (5) is fixedly connected to the second hinge column (23), and an air supply pipe (51) is fixedly connected to the air pump (5). The end of the air supply pipe (51) away from the air pump (5) is fixedly connected to the protective bag (4). A pressure sensor (45) is fixedly connected inside the protective bag (4).

5. The knee joint rehabilitation exercise device according to claim 4, characterized in that, An electromagnetic pressure relief valve (511) is fixedly installed on the air pump (5).

6. The knee joint rehabilitation exercise device according to claim 4, characterized in that, The inner wall of the protective bladder (4) is fixedly connected with reinforcing ribs (41).

7. The knee joint rehabilitation exercise device according to claim 4, characterized in that, A microwave generator (42), a smart chip (43), and an NFC thermistor (44) are fixedly connected to the inner wall of the protective bag (4) at the end away from the third hinge post (31). The microwave generator (42) is electrically connected to the power mechanism (6), and the smart chip (43) and the NFC thermistor (44) are both electrically connected to the control mechanism (7).

8. The knee joint rehabilitation exercise device according to claim 7, characterized in that, The microwave generator (42) is equipped with a gallium nitride power amplifier (421).

9. A knee joint rehabilitation exercise device according to claim 4, characterized in that, An electromagnetic wave generator (46) is fixedly connected to the inner wall of the protective bag (4) at the end away from the third hinge post (31). The electromagnetic wave generator (46) is equipped with a Hall effect sensor (461) and a pair of magnetic field coils (462).

10. A knee joint rehabilitation exercise device according to claim 4, characterized in that, The power mechanism (6) is provided with a connecting line (61) and a conduit (62). The conduit (62) is fixedly connected to the medical frame (1). Quick connectors (621) are fixedly installed at both ends of the conduit (62). The connecting line (61) is detachably connected to the quick connectors (621).

Images