Multifunctional bed for postoperative rehabilitation of femoral neck fracture

Abstract

The invention relates to the field of auxiliary instruments for postoperative rehabilitation of femoral neck fracture, in particular to a multifunctional bed for postoperative rehabilitation of femoral neck fracture, which comprises a bed body for a patient to lie flat, and a support block rotationally matched with the bed body is arranged at the center of the bed body; the sensing layer is used for detecting the body weight of a patient and applying a real-time pressure value, the limiting mechanism is used for limiting the patient from moving, and the driving mechanism is used for driving the supporting block to conduct body position conversion. The processor is used for establishing a body model based on the real-time pressure value, and the processor is also used for inputting position information of each pressure sensor and carrying out associated marking on the limiting mechanism based on the position information; and reminding the movement condition of the legs of the patient based on the body model. Therefore, a patient after the femoral neck fracture operation can be in bed rehabilitation conveniently, shear stress borne by internal fixation is reduced, healing of a fracture broken end is facilitated, and fracture rehabilitation is accelerated.

Description

Technical Field

[0001] The present invention relates to the field of rehabilitation assistance devices after femoral neck fracture surgery, and specifically relates to a multifunctional bed for rehabilitation after femoral neck fracture surgery. Background Art

[0002] Femoral neck fracture is a common fracture type in orthopedics. Due to the fragile blood supply of the femoral head, the blood supply of the femoral head is easily damaged when a fracture occurs in the femoral neck. At the same time, fracture patients are usually accompanied by osteoporosis. When performing fracture internal fixation surgery, the internal fixation device is prone to insufficient holding force on the proximal fracture end, which is likely to lead to loss of reduction during the patient's rehabilitation process, and further lead to serious complications such as nonunion and osteonecrosis. Therefore, femoral neck fracture is called the last fracture in life.

[0003] How to improve the fracture healing rate and reduce the incidence of femoral head necrosis after femoral neck fracture has always been a research hotspot. Among them, the key points of fracture treatment include good fracture reduction, strong fixation, and reasonable postoperative rehabilitation. The current mainstream view of rehabilitation is to avoid weight-bearing of the lower limbs for three months. Usually, patients stay in bed for rest to facilitate good reduction of the fractured part. After three months, gradually resume partial weight-bearing of the lower limbs. However, long-term bed rest may induce complications such as pressure sores, infections, and thrombosis, which can directly lead to the death of the patient in severe cases. At the same time, during the long-term bed rest period, patients usually need to adjust their body positions due to discomfort to reduce the occurrence of complications. Incorrect body position adjustment and postoperative pain may cause patients not to dare to lie on their sides, which may cause shear stress on the fractured end of the femoral neck, resulting in failure of internal fixation (such as using three cannulated screws for internal fixation), and requiring re-treatment, which greatly increases the burden on patients and their families.

[0004] Therefore, the present invention designs a rehabilitation bed that improves the local stress environment of the fracture, enables the patient to form compressive stress beneficial to fracture healing at the fractured end during bed rest, reduces or eliminates shear stress that is not conducive to fracture healing, greatly reduces the failure of internal fixation, accelerates fracture rehabilitation, and facilitates the prognosis of patients with femoral neck fracture. Summary of the Invention

[0005] To solve the above problems, the present invention provides a multifunctional bed for rehabilitation after femoral neck fracture surgery, which facilitates the bed rest rehabilitation of patients after femoral neck fracture surgery, reduces the shear stress on the internal fixation, is conducive to the healing of the fractured end, and accelerates fracture rehabilitation.

[0006] To achieve the above object, the technical solution of the present invention is as follows: A multifunctional bed for rehabilitation after femoral neck fracture surgery includes a bed body for the patient to lie flat. An activity cavity is opened at the center of the bed body. A support block parallel to the top of the bed body is provided in the activity cavity. One side of the support block is fixedly connected to a central axis, and the central axis is rotationally matched with the bed body; The support block is sequentially provided with an induction layer for detecting the real-time pressure value exerted by the patient's weight in the height direction from top to bottom, a limiting mechanism for restricting the patient's movement, and a driving mechanism for driving the support block to perform body position conversion; A support layer for placing the patient's torso is fixedly connected to the center of the support block. The induction layer includes a number of pressure sensors fixedly connected to the output ends of the limiting mechanism. The pressure sensors are used to detect the real-time pressure value exerted by the patient's limbs, and the pressure sensors are evenly arranged on both sides of the support layer; It further includes a processor for establishing a body shape model based on the real-time pressure value. The processor is also used to input the position information of each pressure sensor, perform associated marking on the limiting mechanism based on the position information; and remind the patient's leg movement situation based on the body shape model.

[0007] Furthermore, the limiting mechanism includes a blocking plate and a number of sliding channels opened on the support block. A blocking rod is arranged in the sliding channel. The bottom of the blocking rod is fixedly connected to the support block, and a baffle is fixedly connected to the top of the blocking rod. The baffle is fixedly connected to the pressure sensor; One end of the blocking plate is fixedly connected with a placement block for engaging and blocking the blocking rod, and a matching cavity for placing the patient's thigh root is opened on the blocking plate.

[0008] Furthermore, a fixing plate is fixedly connected below the bed body. The fixing plate is located below the support block. The driving mechanism includes a number of first support rods and second support rods located between the support block and the fixing plate; One ends of the first support rods are all hinged to one end of the support block away from the central axis. The other ends of the first support rods are all hinged with first sliders. A number of first sliding grooves are opened on the fixing plate. The first sliders are located in the first sliding grooves, and the first sliders are slidably matched with the fixing plate; The second support rods are located between the first support rods. One end of the second support rod is placed on the fixing plate. The other ends of the second support rods are all hinged with second sliders. Second sliding grooves are opened on the support block. The second sliding grooves are located between adjacent blocking rods; The second sliders are located in the second sliding grooves, and the second sliders are slidably matched with the support block; A hydraulic oil tank for storing hydraulic oil is fixedly connected below the fixing plate. The output end of the hydraulic oil tank is communicated with a hydraulic pump for sucking or pumping hydraulic oil. The output end of the hydraulic pump is communicated with a number of hydraulic pipes. The hydraulic pipes are respectively communicated with the first support rods, the second support rods and the blocking rods, and solenoid valves are communicated between the hydraulic pipes and the first support rods, the second support rods and the blocking rods. The solenoid valves are electrically connected to the processor; Among them, a first solenoid valve is provided between the hydraulic oil tank and the first support rod, a second solenoid valve is provided between the hydraulic oil tank and the second support rod, and a third solenoid valve is provided between the hydraulic oil tank and the blocking rod; When the second support rod moves to the farthest end, the first slider moves to the farthest point from the central axis in the first sliding groove.

[0009] Further, a placement block for installing a blocking plate is fixedly connected below the fixing plate.

[0010] Further, a consolidation block is fixedly connected to one side of the second support rod close to the fixing plate, and the diameter of the consolidation block is greater than that of the second support rod.

[0011] Further, a first railing and a second railing are respectively provided on both sides of the bed body. The first railing is fixedly connected to the bed body; a rotating shaft is provided between the second railing and the bed body. The rotating shaft is fixedly connected to the second railing, and the rotating shaft is rotationally matched with the bed body; A third support rod is fixedly connected to the end of the second railing away from the bed body, and the third support rod is communicated with the output end of the hydraulic tank.

[0012] Further, elliptical handrails are fixedly connected to the tops of the first railing and the second railing.

[0013] Further, an extension block is also fixedly connected to the end of the first railing away from the rotating shaft. The extension block is rotationally matched with the bed body. One end of the hydraulic pipe away from the hydraulic tank penetrates through the extension block and is communicated with the third support rod. And a fourth solenoid valve is communicated between the third support rod and the hydraulic tank. The fourth solenoid valve is electrically connected to the processor; A separation cavity is formed on the bed body. The height of the separation cavity is higher than that of the hydraulic pipe. The extension block is located inside the separation cavity. A stabilizing rod is provided at one end of the extension block away from the support block. The output end of the stabilizing rod abuts against the extension block; a water pipe is communicated with the stabilizing rod. One end of the water pipe away from the stabilizing rod is located below the first slider, and the water pipe is communicated with the hydraulic pipe. One side of the water pipe close to the hydraulic pipe is lower than the side of the water pipe away from the hydraulic pipe; When the first slider is at the closest point to the central axis, the first slider abuts against the water pipe; when the first slider is at the farthest point from the central axis, the first slider is separated from the water pipe.

[0014] Further, the processor is also used to compare the real-time pressure value at the current time with the set standard value. If the real-time pressure value is less than the standard value, a blank mark is added based on the position information corresponding to the pressure sensor; if the real-time pressure value is greater than the standard value, a limb mark is added based on the position information corresponding to the pressure sensor; The processor establishes a body shape model based on the blank mark and the limb mark, obtains the position information of the corresponding pressure sensor based on the junction of the limb mark and the blank mark in the body shape model, then sends a start instruction to the third solenoid valve corresponding to the associated mark based on the position of the pressure sensor, and sends start instructions to the second solenoid valve, the first solenoid valve and the fourth solenoid valve based on the pre-recorded timing instructions.

[0015] Further, the processor is also configured to compare the body shape model at the current time with the body shape model before the current time to obtain the trajectory change of the same pressure sensor before and after the current time, and calculate the difference value corresponding to the trajectory change; compare the difference value with the set displacement value. If the difference value is greater than the displacement value, an abnormal reminder instruction is sent to the outside; if the difference value is less than the displacement value, a normal instruction is sent to the outside.

[0016] The following are the beneficial effects of adopting the above solution: 1. In this solution, when the patient is in the lateral lying position, the lateral lying angle of the patient is adjusted, and the body weight of the patient is used to generate a compressive stress perpendicular to the fracture end at the femoral neck fracture site, so as to ensure that the compressive stress is in the same direction as the pressure direction of the internal fixation, thereby assisting in compressing the hip joint at the fracture end to align and close, reducing the negative impact on the internal fixation (such as the misalignment caused by the lateral shear stress and the fixation failure that may be caused by the long-term stretching of the internal fixation), and thus facilitating the alignment and healing of the fracture ends at the femoral neck fracture site to accelerate the fracture recovery.

[0017] 2. In this solution, during the process of the patient's bed rest, the pressure exerted by the patient lying flat on the bed body on the support block can not only confirm the body shape of the patient, so as to facilitate the subsequent fixation of the body by the limiting mechanism when the patient switches positions, making it easier for the patient to switch from the lying position to the lateral lying position and enabling the patient to turn over as a whole, so as to reduce the local compression caused by the patient's single posture; but also reduce the compression impact on the femoral neck fracture site when the patient actively turns over, and reduce the shear stress on the internal fixation during the process of the patient's position conversion, so as to ensure the stability of the internal fixation.

[0018] 3. In this solution, based on the rehabilitation treatment needs of patients after femoral neck fracture surgery, a hospital bed is provided to assist the patient in switching positions, so as to reduce the local compression during the long-term bed rest of the patient, reduce the risk of complications such as bedsores, infections, and thrombosis that may be induced, and facilitate the patient's rehabilitation.

[0019] The additional aspects and advantages of the present invention will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Is an axonometric view of an embodiment of the multifunctional bed for postoperative rehabilitation of femoral neck fracture of the present invention; Figure 2 Is a top view of an embodiment of the multifunctional bed for postoperative rehabilitation of femoral neck fracture of the present invention; Figure 3 Is a side view of an embodiment of the multifunctional bed for postoperative rehabilitation of femoral neck fracture of the present invention; Figure 4 Is Figure 2Schematic cross-sectional view in the A-A direction in [the figure]; Figure 5 is Figure 3 Schematic cross-sectional view in the C-C direction in [the figure]; Figure 6 is Figure 3 Schematic cross-sectional view in the D-D direction in [the figure]; Figure 7 is Figure 4 Enlarged schematic view of the partial B in [the figure]; Figure 8 is Figure 4 Installation schematic view of the baffle in [the figure]; Figure 9 Schematic view of the hip joint force in the embodiment of the multifunctional bed for postoperative rehabilitation of femoral neck fractures of the present invention; Figure 10 Schematic view of the human body lying on its side in the embodiment of the multifunctional bed for postoperative rehabilitation of femoral neck fractures of the present invention; Figure 11 Schematic view of the force when the Pauwels angle < 30 degrees in the embodiment of the multifunctional bed for postoperative rehabilitation of femoral neck fractures of the present invention; Figure 12 Schematic view of the force when the Pauwels angle > 30 degrees and < 50 degrees in the embodiment of the multifunctional bed for postoperative rehabilitation of femoral neck fractures of the present invention; Figure 13 Schematic view of the force when the Pauwels angle > 50 degrees in the embodiment of the multifunctional bed for postoperative rehabilitation of femoral neck fractures of the present invention.

[0021] Reference numerals in the accompanying drawings of the specification include: 1, bed body; 11, activity cavity; 12, fixed plate; 2, support block; 20, central axis; 21, pressure sensor; 22, blocking rod; 3, first railing; 31, rotating shaft; 32, extension block; 33, separation cavity; 34, stabilizing rod; 4, second railing; 41, armrest; 5, first support rod; 51, first slider; 52, first chute; 6, second support rod; 61, second chute; 7, hydraulic tank; 71, hydraulic pipe; 72, solenoid valve; 8, baffle; 81, placement block; 82, mating cavity; 83, rotating plate; 9, human body model. Detailed implementation manners

[0022] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts fall within the protection scope of the present invention.

[0023] 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.

[0024] 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 situations.

[0025] The following is a further detailed description through specific embodiments: Embodiment 1:

[0026] As shown in the attached Figures 1 to 9 figures: A multifunctional bed for the postoperative rehabilitation of femoral neck fractures, including a bed body 1 for the patient to lie flat. An activity cavity 11 is opened at the center of the bed body 1. A support block 2 parallel to the top of the bed body 1 is arranged in the activity cavity 11. One side of the support block 2 is fixedly connected with a central shaft 20, and the central shaft 20 is rotationally matched with the bed body 1.

[0027] The support block 2 is sequentially provided with an induction layer for detecting the real-time pressure value exerted by the patient's weight, a limiting mechanism for restricting the patient's movement, and a driving mechanism for driving the support block 2 to perform body position conversion in the order from top to bottom in the height direction.

[0028] A support layer for placing the patient's torso part is fixedly connected to the center of the support block 2. The induction layer includes a number of pressure sensors 21 fixedly connected to the output end of the limiting mechanism. The pressure sensors 21 are used to detect the real-time pressure value exerted by the patient's limbs. The pressure sensors 21 are evenly arranged on both sides of the support layer; it also includes a processor for establishing a body shape model based on the real-time pressure value. The processor is also used to input the position information of each pressure sensor 21, perform associated marking on the limiting mechanism based on the position information; and remind the movement situation of the patient's legs based on the body shape model.

[0029] Among them, the limiting mechanism includes a blocking plate 8 and a number of sliding channels opened on the support block 2. A blocking rod 22 is arranged in the sliding channel. The bottom of the blocking rod 22 is fixedly connected to the support block 2, and a baffle is fixedly connected to the top of the blocking rod 22. The baffle is fixedly connected to the pressure sensor 21. One end of the blocking plate 8 is fixedly connected with a placement block 81 for engaging the blocking rod 22, and a fitting cavity 82 for placing the patient's thigh root is opened on the blocking plate 8.

[0030] A fixing plate 12 is fixedly connected below the bed body 1. The fixing plate 12 is located below the support block 2. The driving mechanism includes a number of first support rods 5 and second support rods 6 located between the support block 2 and the fixing plate 12. One end of each first support rod 5 is hinged to the end of the support block 2 away from the central axis 20. The other end of each first support rod 5 is hinged with a first slider 51. A number of first sliding grooves 52 are opened on the fixing plate 12. The first slider 51 is located in the first sliding groove 52, and the first slider 51 is slidably matched with the fixing plate 12.

[0031] The second support rods 6 are located between the first support rods 5. One end of each second support rod 6 is placed on the fixing plate 12. A consolidation block is fixedly connected to the side of the second support rod 6 close to the fixing plate 12. The diameter of the consolidation block is greater than the diameter of the second support rod 6. The other end of each second support rod 6 is hinged with a second slider (not shown in the figure). A second sliding groove 61 is opened on the support block 2. The second sliding groove 61 is located between adjacent blocking rods 22. The second slider is located in the second sliding groove 61, and the second slider is slidably matched with the support block 2. A hydraulic oil tank 7 for storing hydraulic oil is fixedly connected below the fixing plate 12. The output end of the hydraulic oil tank 7 is communicated with a hydraulic pump (not shown in the figure) for sucking or pumping hydraulic oil. The output end of the hydraulic pump is communicated with a number of hydraulic pipes 71. In this embodiment, some of the hydraulic pipes 71 are telescopic pipes, such as corrugated pipes, etc. The hydraulic pipes 71 are respectively communicated with the first support rods 5, the second support rods 6 and the blocking rods 22, and electromagnetic valves 72 are communicated between the hydraulic pipes 71 and the first support rods 5, the second support rods 6 and the blocking rods 22. The electromagnetic valves 72 are electrically connected to the processor. Among them, a first electromagnetic valve 72 is arranged between the hydraulic oil tank 7 and the first support rod 5, a second electromagnetic valve 72 is arranged between the hydraulic oil tank 7 and the second support rod 6, and a third electromagnetic valve 72 is arranged between the hydraulic oil tank 7 and the blocking rod 22. When the second support rod 6 moves to the farthest end, the first slider 51 moves to the farthest point from the central axis 20 in the first sliding groove 52.

[0032] A first railing 3 and a second railing 4 are respectively provided on both sides of the bed body 1, the first railing 3 is fixedly connected to the bed body 1, and the tops of the first railing 3 and the second railing 4 are fixedly connected with elliptical handrails 41 to improve the comfort of the patient's hands during grasping; a rotating shaft 31 is provided between the second railing 4 and the bed body 1, the rotating shaft 31 is fixedly connected to the second railing 4, and the rotating shaft 31 rotates with the bed body 1; a third support rod is fixedly connected to one end of the second railing 4 away from the bed body 1, and the third support rod is connected to the output end of the hydraulic tank 7.

[0033] The processor is also used to compare the real-time pressure value at the current time with the set standard value. If the real-time pressure value is less than the standard value, a blank mark is added based on the position information corresponding to the pressure sensor 21; if the real-time pressure value is greater than the standard value, a limb mark is added based on the position information corresponding to the pressure sensor 21.

[0034] The processor establishes a body model based on blank marks and limb marks, obtains the position information of the corresponding pressure sensor 21 based on the intersection of the limb marks and the blank marks in the body model, and then sends a start instruction to the third solenoid valve 72 corresponding to the associated mark based on the position of the pressure sensor 21, and sends a start instruction to the second solenoid valve 72, the first solenoid valve 72 and the fourth solenoid valve 72 based on the pre-recorded timing instructions.

[0035] For example, by comparing the real-time pressure value of the pressure sensor 21 to determine the changes in the patient's lying position at the current time, the current patient's body shape characteristics have been confirmed, which facilitates the subsequent provision of clamping and fixation adapted to the patient's own body shape, so as to improve the patient's body stability during the process of body position change, so as to adapt to the needs of different patients.

[0036] The processor is also used to compare the body shape model at the current time with the body shape model before the current time. In this example, the body shape model comparison is mainly the comparison of the leg positions, and the trajectory change of the same pressure sensor 21 before and after the current time is obtained, and the phase difference value corresponding to the trajectory change is calculated; the phase difference value is compared with the set displacement value, and if the phase difference value is greater than the displacement value, an abnormal reminder instruction is sent to the outside world. In this embodiment, the instrument that receives the instruction from the outside world includes but is not limited to a buzzer, a mobile phone terminal, etc.; if the phase difference value is less than the displacement value, a normal instruction is sent to the outside world.

[0037] For example, by comparing the patient's limb movements to determine the patient's leg movement range, when the patient's movement range is large, mainly when unattended at night, the medical staff or caregivers can be reminded to pay attention to the situation in time to reduce the shear stress damage to the internal fixation caused by the patient's excessive movement or unconscious movement, ensure internal stability, and facilitate the recovery of femoral neck fractures.

[0038] The specific implementation process is as follows: First, the patient lies flat on the bed body 1 and applies pressure to the support block 2, which can not only confirm the patient's body shape, so that when the patient switches positions later, the body can be fixed by the limiting mechanism, which is convenient for the patient to switch from the lying position to the lateral position and enables the patient to be turned over as a whole, so as to reduce the local compression caused by the patient's single posture; but also reduce the compression effect on the femoral neck fracture when the patient actively turns over, and reduce the shear stress on the internal fixation during the patient's position conversion, so as to ensure the stability of the internal fixation.

[0039] As Figure 9 As shown in the figure of the hip joint force, mainly for femoral neck fractures, the force perpendicular to ZD is the compressive stress beneficial to fracture healing, and the force parallel to ZD is the shear stress (such as S). When the patient bears weight, the real force R can be decomposed to apply pressure to the internal fixation. In this embodiment, by adjusting the lateral lying angle of the patient, the compressive stress perpendicular to the fracture end is generated on the femoral neck fracture by the patient's body weight, so as to ensure that the direction of the compressive stress is the same as the pressure direction of the internal fixation, and then assist in compressing and aligning the hip joint at the fracture end to reduce the negative impact on the internal fixation (such as the misalignment movement of the lateral shear stress and the possible fixation failure caused by the long-term stretching of the internal fixation), and then facilitate the alignment and healing of the fracture ends at the femoral neck fracture, so as to accelerate fracture rehabilitation.

[0040] During the fixation process, the real-time pressure value of the pressure sensor 21 is used to control the blocking rod 22 to extend and block, so as to support and fix the patient's leg, reduce the sliding of the patient on the surface of the support block 2 during position adjustment, and facilitate the patient to switch positions; the limiting support of the blocking rod 22 is used to provide a basic fixed point, provide an attachment space for the installation and clamping of the blocking plate 8, place the patient's leg through the blocking plate 8, provide a support plane to support the leg muscles, improve the comfort of the patient, and at the same time suspend the surgical wound at the femoral neck fracture through the matching cavity 82 to reduce the irritation to the wound, so as to facilitate the patient to lie on the side and rest, and facilitate the patient's rehabilitation.

[0041] During the movement of the support block 2, the hydraulic pump is used to pump hydraulic oil to drive the first support rod 5, the second support rod 6 and the blocking rod 22 to expand and contract to support, ensuring the stability of the movement of the support block 2, reducing the shaking phenomenon of the support plate, ensuring the stability of the patient during position conversion, and ensuring the stability of the internal fixation.

[0042] During the rotation of the support block 2 around the central axis 20, the processor controls the start of the first solenoid valve 72 and the second solenoid valve 72. First, it controls the second support rod 6 to lift the support block 2 to drive the support block 2 to rotate around the central axis 20. By means of the consolidation block, the support area between the second support rod 6 and the fixed plate 12 is increased, that is, the local pressure of the second support rod 6 on the fixed plate 12 is increased, and it is also convenient for the second support rod 6 to be horizontally placed during the contact with the fixed plate 12. At the same time, the support block 2 drives the first support rod 5 to move. At this time, the first support rod 5 is not activated, so that the first support rod 5 pulls the first slider 51 to move in the first chute 52 to change the basic support point between the first support rod 5 and the fixed plate 12, facilitating the subsequent movement of the first support rod 5 to push the support block 2.

[0043] When the second support rod 6 moves to the highest point, the first support rod 5 pulls the first slider 51 to move to the side of the first chute 52 away from the central axis 20, and a certain rotation space is formed between the support block 2 and the fixed plate 12 to facilitate the first support rod 5 to extend in length to lift the support block 2. At the same time, since the first slider 51 slides to the farthest end of the first chute 52 from the central axis 20, when the support block 2 exerts a reaction force on the first support rod 5, the fixed plate 12 supports the first slider 51 inside the first chute 52 to improve the support stability of the first support rod 5 for the support block 2 and ensure the body stability of the patient during the body position conversion.

[0044] During the use of the bed body 1, the railings, as the obstructive parts on both sides of the bed body 1, can play an obstructive and supporting role to support and protect the patients in bed for rest or at night. The telescopic third support rod provides support for the arms of the patients lying on their sides to reduce the pressure of the upper body on the lower body during the side-lying process, thereby reducing the shear stress on the femoral neck fracture during the side-lying process. At the same time, by supporting with the arms, a reliance point is provided to improve the psychological sense of security of the patients, ensure the upper body of the patients fits with the bed body 1, and ensure the safety of the patients.

[0045] Embodiment 2:

[0046] The difference from Embodiment 1 is that a placement block 81 for installing the blocking plate 8 is fixedly connected below the fixed plate 12.

[0047] The specific implementation process is as follows: The support of the placement block 81 facilitates the placement of the blocking plate 8 for the storage of the blocking plate 8, and the placement block 81 is hidden under the bed body 1, improving the space utilization rate and the aesthetics at the same time. And through the detachable connection between the blocking plate 8 and the placement block 81, the convenience of use during the installation of the blocking plate 8 is ensured.

[0048] Embodiment 3:

[0049] The difference from Embodiment 2 is that an extension block 32 is fixedly connected to one end of the first railing 3 far away from the rotating shaft 31. The extension block 32 is rotatably matched with the bed body 1. One end of the hydraulic pipe 71 far away from the hydraulic tank 7 penetrates through the extension block 32 and is communicated with the third support rod. A fourth solenoid valve 72 is communicated between the third support rod and the hydraulic tank 7, and the fourth solenoid valve 72 is electrically connected to the processor.

[0050] A separation cavity 33 is formed on the bed body 1. The height of the separation cavity 33 is higher than that of the hydraulic pipe 71. The extension block 32 is located inside the separation cavity 33. A stabilizing rod 34 is provided at one end of the extension block 32 far away from the support block 2. The output end of the stabilizing rod 34 abuts against the extension block 32; a water pipe is communicated with the stabilizing rod 34. One end of the water pipe far away from the stabilizing rod 34 is located below the first slider 51, and the water pipe is communicated with the hydraulic pipe 71. One side of the water pipe close to the hydraulic pipe 71 is lower than the side of the water pipe far away from the hydraulic pipe 71; when the first slider 51 is at the nearest point to the central axis 20, the first slider 51 abuts against the water pipe; when the first slider 51 is at the farthest point from the central axis 20, the first slider 51 is separated from the water pipe.

[0051] The specific implementation process is as follows: During the movement of the first slider 51 in the first chute 52, by releasing the blocking effect of the first slider 51 on the water pipe, and using the height difference between the separation cavity 33 and the hydraulic tank 7, the hydraulic oil inside the stabilizing rod 34 flows back to the inside of the hydraulic tank 7 due to gravity. At this time, the stabilizing rod 34 releases the support for the extension block 32, so that the first railing 3 rotates around the rotating shaft 31, and further makes the first railing 3 shift upward towards the bed body 1, so as to provide support for the arms of the lateral lying patients. Then, the processor controls the fourth solenoid valve 72 to control the extension of the third support rod, which is convenient for the patients undergoing body position adjustment to grip and support.

[0052] Embodiment 4:

[0053] Combined as Figure 10 As shown, the difference from Embodiment 3 is that a rotating plate 83 is also rotatably matched on the blocking plate 8. The rotating plate 83 is located in the fitting cavity 82, and a fixing bolt (not shown in the figure) is threadedly connected between the rotating plate 83 and the blocking plate 8 In the prior art, for example, Pauwels classification is based on the angle between the fracture line of the femoral neck fracture and the horizontal plane to evaluate the stability of the femoral neck fracture into the following 3 categories: Pauwels angle < 30 degrees: When the body weight acts on the femoral neck, the shear force is small and the fracture is relatively stable, as Figure 11 shown; Pauwels angle > 30 degrees and < 50 degrees: The shear force borne by the fracture end is greater than that when Pauwels < 30 degrees, as Figure 12 shown; Pauwels angle > 50 degrees: When the body weight acts on the femoral neck, the shear force is large, there is often displacement, and the fracture is unstable, asFigure 13 As shown. Therefore, for patients with Pauwels angle > 50 degrees, it is necessary to ensure good surgical reduction and firm fixation of the fracture ends. When standing and bearing weight, the pressure generated by body weight is almost parallel to the fracture line, and the local shear force is very large, resulting in a high failure rate.

[0054] Therefore, in this embodiment, the doctor adjusts the support angle of the rotating plate to adjust the lower limb angle, so that the patient (leg) tilts a certain angle towards the bottom of the bed (as Figure 10 shown by the orientation of the human model 9 in the figure), according to the Pauwels angle corresponding to the angle between the fracture line and the horizontal plane when the patient fractures himself, so that the fracture line is parallel to the horizontal plane when the patient lies on his side, and the weight generated by the body above the fracture line exerts pressure on the fracture line, which is beneficial to the healing of the fracture.

[0055] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A multifunctional bed for postoperative rehabilitation of femoral neck fracture, comprising a bed body (1) for a patient to lie flat, an activity cavity (11) being opened at the center of the bed body (1), characterized in that: A support block (2) parallel to the top of the bed body (1) is provided in the movable cavity (11); a central shaft (20) is fixedly connected to one side of the support block (2); and the central shaft (20) is rotatably matched with the bed body (1); The support block (2) is provided with a sensing layer for detecting the real-time pressure value applied by the patient's weight, a limiting mechanism for limiting the movement of the patient, and a driving mechanism for driving the support block (2) to change the body position in order from top to bottom along the height direction; A support layer for placing a patient's torso is fixedly connected at the center of the support block (2); the sensing layer comprises a plurality of pressure sensors (21) fixedly connected to the output end of the limiting mechanism; the pressure sensors (21) are used to detect the real-time pressure value applied by the patient's limbs; the pressure sensors (21) are evenly arranged on both sides of the support layer; It also includes a processor for establishing a body shape model based on real-time pressure values, the processor is also used to input position information of each pressure sensor (21), associate and mark the limit mechanism based on the position information; and remind the patient of the movement of the leg based on the body shape model.

2. The multifunctional bed for postoperative rehabilitation of femoral neck fracture according to claim 1, characterized in that: The limiting mechanism comprises a blocking plate (8) and a plurality of sliding channels opened on the support block (2), wherein a blocking rod (22) is provided in the sliding channel, the bottom of the blocking rod (22) is fixedly connected to the support block (2), the top of the blocking rod (22) is fixedly connected to a blocking plate, and the blocking plate is fixedly connected to the pressure sensor (21); A placement block (81) for engaging the blocking rod (22) is fixedly connected to one end of the blocking plate (8), and a matching cavity (82) for placing the patient's thigh root is formed on the blocking plate (8).

3. The multifunctional bed for postoperative rehabilitation of femoral neck fracture according to claim 2, characterized in that: A fixing plate (12) is fixedly connected below the bed body (1), the fixing plate (12) is located below the support block (2), and the driving mechanism comprises a plurality of first support rods (5) and second support rods (6) located between the support block (2) and the fixing plate (12); One end of the first support rod (5) is hinged to one end of the support block (2) away from the central axis (20), and the other end of the first support rod (5) is hinged to a first slider (51). The fixed plate (12) is provided with a plurality of first slide grooves (52). The first slider (51) is located in the first slide grooves (52), and the first slider (51) is slidably matched with the fixed plate (12); The second support rod (6) is located between the first support rods (5), one end of the second support rod (6) is placed on the fixed plate (12), the other end of the second support rod (6) is hinged with a second slide block, a second slide groove (61) is opened on the support block (2), and the second slide groove (61) is located between adjacent blocking rods (22); the second slide block is located in the second slide groove (61), and the second slide block is slidably matched with the support block (2); A hydraulic tank (7) for storing hydraulic oil is fixedly connected below the fixed plate (12); an output end of the hydraulic tank (7) is connected to a hydraulic pump for sucking or pumping hydraulic oil; an output end of the hydraulic pump is connected to a plurality of hydraulic pipes (71); the hydraulic pipes (71) are respectively connected to the first support rod (5), the second support rod (6) and the blocking rod (22); and electromagnetic valves (72) are connected between the hydraulic pipes (71) and the first support rod (5), the second support rod (6) and the blocking rod (22); the electromagnetic valves (72) are electrically connected to the processor; wherein a first electromagnetic valve (72) is provided between the hydraulic tank (7) and the first support rod (5), a second electromagnetic valve (72) is provided between the hydraulic tank (7) and the second support rod (6), and a third electromagnetic valve (72) is provided between the hydraulic tank (7) and the blocking rod (22); When the second support rod (6) moves to the farthest end, the first sliding block (51) moves to the farthest point of the first sliding slot (52) from the central axis (20).

4. The multifunctional bed for postoperative rehabilitation of femoral neck fracture according to claim 3, characterized in that: A placement block (81) for mounting the blocking plate (8) is fixedly connected below the fixing plate (12).

5. The multifunctional bed for postoperative rehabilitation of femoral neck fracture according to claim 4, characterized in that: A consolidation block is fixedly connected to one side of the second support rod (6) close to the fixing plate (12); the diameter of the consolidation block is greater than the diameter of the second support rod (6).

6. The multifunctional bed for postoperative rehabilitation of femoral neck fracture according to claim 5, characterized in that: A first railing (3) and a second railing (4) are respectively provided on both sides of the bed body (1), and the first railing (3) is fixedly connected to the bed body (1); a rotating shaft (31) is provided between the second railing (4) and the bed body (1), and the rotating shaft (31) is fixedly connected to the second railing (4), and the rotating shaft (31) is rotatably matched with the bed body (1); One end of the second railing (4) away from the bed body (1) is fixedly connected to a third support rod, and the third support rod is in communication with the output end of the hydraulic tank (7).

7. The multifunctional bed for postoperative rehabilitation of femoral neck fracture according to claim 6, characterized in that: The tops of the first railing (3) and the second railing (4) are both fixedly connected with elliptical handrails (41).

8. The multifunctional bed for postoperative rehabilitation of femoral neck fracture according to claim 7, characterized in that: An end of the first railing (3) away from the rotating shaft (31) is also fixedly connected to an extension block (32), the extension block (32) and the bed body (1) are rotatably matched, an end of the hydraulic pipe (71) away from the hydraulic tank (7) passes through the extension block (32) and is connected to the third support rod, and a fourth solenoid valve (72) is connected between the third support rod and the hydraulic tank (7), and the fourth solenoid valve (72) is electrically connected to the processor; A separation chamber (33) is formed on the bed body (1), the height of the separation chamber (33) is higher than the height of the hydraulic pipe (71), an extension block (32) is located inside the separation chamber (33), a stabilizing rod (34) is provided at one end of the extension block (32) away from the support block (2), the output end of the stabilizing rod (34) abuts against the extension block (32); a water pipe is connected to the stabilizing rod (34), one end of the water pipe away from the stabilizing rod (34) is located below the first slider (51), and the water pipe is connected to the hydraulic pipe (71), and a side of the water pipe close to the hydraulic pipe (71) is lower than a side of the water pipe away from the hydraulic pipe (71); When the first slider (51) is located at the point closest to the central axis (20), the first slider (51) abuts against the water pipe; when the first slider (51) is located at the point farthest from the central axis (20), the first slider (51) is separated from the water pipe.

9. The multifunctional bed for postoperative rehabilitation of femoral neck fracture according to claim 8, characterized in that: The processor is also used to compare the real-time pressure value at the current time with the set standard value, and if the real-time pressure value is less than the standard value, add a blank mark based on the position information corresponding to the pressure sensor (21); If the real-time pressure value is greater than the standard value, a limb mark is added based on the position information corresponding to the pressure sensor (21); The processor establishes a body shape model based on the blank mark and the limb mark, obtains position information of the corresponding pressure sensor (21) based on the intersection of the limb mark and the blank mark in the body shape model, and then sends a start instruction to the third solenoid valve (72) corresponding to the associated mark based on the position of the pressure sensor (21), and sends a start instruction to the second solenoid valve (72), the first solenoid valve (72) and the fourth solenoid valve (72) based on the pre-recorded timing instruction.

10. The multifunctional bed for postoperative rehabilitation of femoral neck fracture according to claim 9, characterized in that: The processor is also used to compare the body shape model at the current time with the body shape model before the current time, obtain the trajectory change of the same pressure sensor (21) before and after the current time, and calculate the phase difference value corresponding to the trajectory change; compare the phase difference value with the set displacement value, if the phase difference value is greater than the displacement value, send an abnormal warning instruction to the outside world; if the phase difference value is less than the displacement value, send a normal instruction to the outside world.

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