Limb stretching device of electric comprehensive operating bed for orthopedics department

Abstract

The invention relates to a limb stretching device of an electric comprehensive operating bed for the orthopedics department, relates to the field of medical equipment, and aims to solve the problem of how to realize a stretching effect to a greater extent in a somatosensory range which can be borne by a patient, the limb stretching device comprises a fixed bed and a movable bed, the fixed bed and the movable bed are both placed on the ground, a stretching driving part is arranged between the fixed bed and the movable bed and used for enabling the movable bed to be close to or away from the fixed bed, a fine adjustment auxiliary assembly is arranged between the movable bed and the stretching driving part, and a pressure detection assembly is arranged on the movable bed and used for detecting the pressure of a human body on the movable bed. And the position of the moving bed is finely adjusted by the fine adjustment auxiliary assembly. The movable bed has the advantages that the body sensing range capable of being borne by a patient is widened, the stretching effect can be achieved to a larger extent, and meanwhile fine adjustment of the position of the movable bed is achieved through pneumatic expansion.

Description

Technical Field

[0001] The present application relates to the field of medical equipment, and in particular to a limb stretching device for an orthopedic electric comprehensive operating table. Background Art

[0002] With the development of society and the aging of the population, the types and number of orthopedic diseases have changed significantly. Trauma caused by traffic accidents, fractures caused by senile osteoporosis, orthopedic joint diseases, bone tumors caused by environmental factors, and rheumatoid arthritis are increasing. These changes have put forward higher requirements for orthopedic medical equipment, especially for the patient's comfort during surgery. In order to meet this demand, the design and function of orthopedic operating tables are continuously optimized, striving to improve the patient's comfort while ensuring the treatment effect.

[0003] At present, the limb stretching devices commonly used in orthopedic surgery mainly rely on manual adjustment or simple motor drive to achieve limb stretching. Specifically, the existing methods include using manual screws, hydraulic systems or electric push rods to adjust the position of the mobile bed to achieve the stretching effect. Although the manual screw is simple to operate, the adjustment accuracy is low and it is difficult to meet the specific needs of different patients. Although the hydraulic system can provide a large stretching force, its response speed is slow and it is easily affected by temperature and pressure fluctuations. The electric push rod has a higher adjustment accuracy and a faster response speed, but there is still a problem of not being able to feedback the patient's body sensation in real time. However, the above-mentioned existing limb stretching devices have some shortcomings in practical applications. Especially during the stretching process, the body sensation of each patient is quite different. The traditional manual adjustment or single electric drive method cannot accurately control the stretching force, which can easily cause the patient to feel uncomfortable or even injured. Therefore, how to achieve a greater stretching effect within the range of body sensation that the patient can bear has become an urgent problem to be solved. Summary of the invention

[0004] In order to achieve a greater degree of stretching effect within the patient's tolerable range of body sensation, the present application provides a limb stretching device for an orthopedic electric comprehensive operating table.

[0005] The limb stretching device for an orthopedic electric comprehensive operating table provided in this application adopts the following technical solution: An orthopedic electric comprehensive operating bed limb stretching device comprises a fixed bed and a mobile bed, both of which are placed on the ground, a stretching drive is arranged between the fixed bed and the mobile bed, the stretching drive is used to move the mobile bed closer to or away from the fixed bed, a fine-tuning auxiliary component is arranged between the mobile bed and the stretching drive, a pressure detection component is arranged on the mobile bed, the pressure detection component is used to detect the pressure of the human body on the mobile bed, so that the fine-tuning auxiliary component can fine-tune the position of the mobile bed. By adopting the above technical scheme, the orthopedic electric comprehensive operating bed limb stretching device can detect the pressure of the human body on the mobile bed in real time during the stretching process, and accurately adjust the position of the mobile bed through the fine-tuning auxiliary component to ensure that the maximum stretching effect is achieved within the body sensation range that the patient can bear. This not only improves the safety and comfort of treatment, but also improves the treatment effect. Preferably, the stretching drive is an oil cylinder, the cylinder body of the oil cylinder is fixed to the bottom of the fixed bed, and the piston rod of the oil cylinder is connected to the mobile bed through the fine-tuning auxiliary component. By adopting the above technical solution, using the oil cylinder as the stretching drive component can provide stable power output, ensure that the mobile bed is smoothly close to or away from the fixed bed, thereby ensuring the stability and safety of the stretching process. The cylinder body of the oil cylinder is fixed to the bottom of the fixed bed, and the piston rod is connected to the mobile bed through a fine-tuning auxiliary component, so that the position of the mobile bed can be accurately adjusted by the fine-tuning auxiliary component during the stretching process, further improving the stretching effect and reducing the patient's discomfort during the stretching process. Preferably, the fine-tuning auxiliary component includes a fixed frame, an elastic airbag and an elastic sheet, the fixed frame is fixed to the mobile bed, the elastic airbag is embedded in the fixed frame, the elastic sheet is connected to one end of the fixed frame close to the oil cylinder, the elastic airbag can contact the elastic sheet to make the elastic sheet bulge in the direction of the oil cylinder; the elastic airbag is connected to a pneumatic expansion member, and the pneumatic expansion member is installed at the bottom of the mobile bed to transport or recover airflow to the elastic airbag. By adopting the above technical solution, it is possible to achieve, during the stretching process, the position of the moving bed can be accurately adjusted according to the pressure changes of the human body on the moving bed through the cooperation of the elastic airbag and the elastic sheet, thereby maximizing the stretching effect within the range that the patient can bear. Specifically, when the pressure of the human body on the moving bed changes, the elastic airbag will expand or contract according to the pressure change, pushing the elastic sheet to bulge toward the cylinder or return to its original position, thereby fine-tuning the position of the moving bed, ensuring that the stretching force is always in the best state, and improving the safety and effectiveness of the treatment. Preferably, the fixed frame is closed in the vertical direction and the side of the fixed frame away from the cylinder is closed, so that the elastic airbag can only bulge toward the cylinder.By adopting the above technical solution, the fixed frame is closed in the vertical direction and the side of the fixed frame away from the oil cylinder is closed, so that the elastic airbag can only bulge in the direction of the oil cylinder when under pressure, avoiding invalid deformation of the airbag in other directions, improving the accuracy and reliability of the fine-tuning auxiliary component, ensuring the precise adjustment of the position of the mobile bed during the stretching process, and improving the ability to achieve the stretching effect within the range of body sensation that the patient can bear. Preferably, the pneumatic expansion member includes an air source pipe and a pneumatic butterfly valve, the air source pipe is installed at the bottom of the mobile bed, one end of the air source pipe is connected to the pneumatic butterfly valve, the end of the pneumatic butterfly valve away from the air source pipe is connected to the elastic airbag, and the pneumatic butterfly valve is installed on the mobile bed to adjust the airflow flow rate input to the elastic airbag. By adopting the above technical solution, the pneumatic expansion member can accurately adjust the airflow flow rate entering the elastic airbag to ensure the best stretching effect within the range of body sensation that the patient can bear. Specifically, the combined design of the air source tube and the pneumatic butterfly valve enables the system to flexibly adjust the air pressure in the elastic airbag according to the real-time detected pressure signal, thereby effectively avoiding discomfort or injury caused by excessive stretching, while ensuring that the stretching force reaches the intensity required for treatment. Preferably, the pressure detection component includes a comfortable pressure sensor and a controller, the comfortable pressure sensor is installed on the mobile bed to sense the pressure between the human body and the mobile bed to determine the stretching pressure, the comfortable pressure sensor and the pneumatic butterfly valve are both electrically connected to the controller, the comfortable pressure sensor sends a first pressure signal to the controller, the controller receives the first pressure signal of the human body on the mobile bed, and determines whether the control first pressure signal exceeds the preset threshold according to the preset pressure threshold, so as to control the pneumatic butterfly valve to adjust the airflow into the elastic airbag. By adopting the above technical solution, the device can monitor the pressure of the human body on the mobile bed in real time during the stretching process, and automatically adjust the airflow in the elastic airbag according to the preset pressure threshold through the controller, thereby realizing fine-tuning of the position of the mobile bed. This helps to ensure that the patient obtains the maximum stretching effect within a comfortable range of body sensation, thereby improving the safety and effectiveness of treatment. Preferably, the pressure detection component also includes a protection pressure sensor, which is electrically connected to the controller, mounted on a fixed frame and in contact with the elastic airbag; the protection pressure sensor receives a second pressure signal from the elastic airbag to the fixed frame, and controls whether the second pressure signal exceeds a preset threshold based on a preset pressure threshold to control the closing of the pneumatic butterfly valve; in the controller, the priority value of the second pressure signal sent by the protection pressure sensor is greater than the first pressure signal sent by the comfort pressure sensor.By adopting the above technical solution, the protective pressure sensor can quickly close the pneumatic butterfly valve when the pressure of the elastic airbag on the fixed frame exceeds the preset threshold value, preventing the elastic airbag from excessively inflating and causing excessive deformation. Therefore, the priority of the protective pressure sensor is higher than the comfort pressure sensor, ensuring that the driving mode can still be reasonably arranged according to the conditions of the oil cylinder and the elastic airbag while protecting the patient, thereby improving the reliability and safety of the entire system. Preferably, the oil cylinder is connected to the controller by electrical signals, and the controller controls the closing of the pneumatic butterfly valve while controlling the start of the oil cylinder, so that the piston rod of the oil cylinder extends a preset fixed distance to increase the distance between the mobile bed and the fixed bed. By adopting the above technical solution, when the controller receives the second pressure signal sent by the protective pressure sensor and determines that it exceeds the preset threshold value, the controller will immediately control the closing of the pneumatic butterfly valve and start the oil cylinder at the same time, so that the piston rod of the oil cylinder extends a preset fixed distance, thereby quickly increasing the distance between the mobile bed and the fixed bed.

[0006] Preferably, the movable bed is provided with a body protection member, and the body protection member is movably arranged on the movable bed to accommodate patients of different body shapes; the comfort pressure sensor is installed on the body protection member to adjust its position synchronously with the body protection member.

[0007] By adopting the above technical solution, the human body protection piece can be adjusted according to the specific body shape of the patient, ensuring the protection of the human body during the stretching process, and avoiding discomfort or injury caused by body shape differences. At the same time, the comfortable pressure sensor adjusts its position synchronously with the human body protection piece, so that the pressure detection is more accurate, and a better stretching effect can be achieved within the body sense range that the patient can bear. Preferably, the human body protection piece includes a protective mounting frame and a protective pad, the protective mounting frame is slidably arranged on the mobile bed, the protective pad is installed on the protective mounting frame, the comfortable pressure sensor is installed between the protective mounting frame and the protective pad, and the end of the protective pad away from the comfortable pressure sensor contacts the human body. By adopting the above technical solution, the device can flexibly adjust the position of the human body protection piece according to the different body shapes and comfort requirements of the patient, ensuring that the comfortable pressure sensor accurately monitors the pressure changes between the human body and the mobile bed. This helps to achieve more accurate stretching adjustment and improve the treatment effect while ensuring the comfort of the patient. Specifically, the design of the protective mounting frame and the protective pad enables the device to adapt to patients of different body shapes, and the installation position of the comfortable pressure sensor ensures real-time monitoring of the stretching pressure, effectively avoiding discomfort or injury caused by excessive stretching.

[0008] In summary, the present application includes at least one of the following beneficial technical effects: 1. The limb stretching device of the orthopedic electric comprehensive operating table can detect the pressure of the human body on the mobile bed in real time during the stretching process, and accurately adjust the position of the mobile bed through fine-tuning auxiliary components to ensure the maximum stretching effect within the patient's tolerable range. This not only improves the safety and comfort of treatment, but also improves the treatment effect; by setting up fine-tuning auxiliary components and pressure detection components, it can achieve a more accurate stretching effect within the patient's tolerable range, improving the patient's comfort and treatment effect; 2. The device can monitor the pressure of the human body on the moving bed in real time during the stretching process, and automatically adjust the airflow in the elastic airbag according to the preset pressure threshold through the controller, so as to achieve fine-tuning of the position of the moving bed. This helps to ensure that the patient obtains the maximum stretching effect within a comfortable range of body sensation, improving the safety and effectiveness of treatment; the pressure detection component can monitor the pressure of the human body on the moving bed in real time, and automatically adjust the working state of the fine-tuning auxiliary component through the controller to ensure the safety and reliability of the stretching process; 3. During the stretching process, the position of the mobile bed can be precisely adjusted through the cooperation of the elastic airbag and the elastic sheet according to the pressure changes of the human body on the mobile bed, thereby maximizing the stretching effect within the range that the patient can bear. Specifically, when the pressure of the human body on the mobile bed changes, the elastic airbag will expand or contract according to the pressure change, pushing the elastic sheet to bulge or return to its original position in the direction of the cylinder, and then fine-tuning the position of the mobile bed to ensure that the stretching force is always in the best state, improving the safety and effectiveness of the treatment; the elastic airbag and pneumatic expansion member in the fine-tuning auxiliary component work together to quickly respond to pressure changes, achieve subtle adjustments to the position of the mobile bed, and avoid patient discomfort caused by excessive stretching. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of a limb stretching device for an orthopedic electric comprehensive operating table in an embodiment of the present application.

[0010] Figure 2 It is a bottom view of the fixed bed and the movable bed in the embodiment of the present application.

[0011] Figure 3 yes Figure 2 A is an enlarged schematic diagram.

[0012] Figure 4 It is a cross-sectional view used to reflect the specific structure of the fine-tuning auxiliary component and the pressure detection component in the embodiment of the present application.

[0013] Figure 5 yes Figure 4 A magnified schematic diagram of B.

[0014] Figure 6 yes Figure 4 A magnified schematic diagram of C in the middle.

[0015] Explanation of the accompanying drawings: 1. Fixed bed; 2. Mobile bed; 3. Cylinder; 4. Fine-tuning auxiliary component; 41. Fixed frame; 42. Elastic airbag; 43. Elastic sheet; 5. Pressure detection component; 51. Comfort pressure sensor; 52. Controller; 53. Protection pressure sensor; 6. Pneumatic expansion member; 61. Air source pipe; 62. Pneumatic butterfly valve; 7. Human body protection member; 71. Protection mounting frame; 72. Protection pad. DETAILED DESCRIPTION

[0016] The following is combined with Figure 1-6 This application is described in further detail.

[0017] The present application embodiment discloses a limb stretching device for an orthopedic electric comprehensive operating table. Figure 1 and Figure 2 The limb stretching device of the orthopedic electric comprehensive operating table includes a fixed bed 1 and a mobile bed 2, both of which are placed on the ground, and a stretching driving member is arranged between the fixed bed 1 and the mobile bed 2, and the stretching driving member is used to move the mobile bed 2 closer to or away from the fixed bed 1. A fine-tuning auxiliary component 4 is arranged between the mobile bed 2 and the stretching driving member, and a pressure detection component 5 is arranged on the mobile bed 2, and the pressure detection component 5 is used to detect the pressure of the human body on the mobile bed 2, so as to make the fine-tuning auxiliary component 4 fine-tune the position of the mobile bed 2.

[0018] During the stretching process, the pressure of the human body on the mobile bed 2 is detected in real time, and the position of the mobile bed 2 is accurately adjusted by fine-tuning the auxiliary component 4 to ensure that the maximum stretching effect is achieved within the patient's tolerable range of body sensation. This not only improves the safety and comfort of the treatment, but also improves the treatment effect.

[0019] In this embodiment, the stretching driving member is an oil cylinder 3 , the cylinder body of the oil cylinder 3 is fixed to the bottom of the fixed bed 1 by bolts, and the piston rod of the oil cylinder 3 is connected to the movable bed 2 by a fine-tuning auxiliary component 4 .

[0020] Reference Figure 2 , Figure 3 and Figure 4 The fine-tuning auxiliary assembly 4 includes a fixed frame 41, an elastic airbag 42 and an elastic sheet 43. The fixed frame 41 is fixed to the movable bed 2 by bolts. The fixed frame 41 is closed in the vertical direction, and the side of the fixed frame 41 away from the oil cylinder 3 is closed. The elastic airbag 42 is embedded in the fixed frame 41 in advance, and the elastic sheet 43 is installed on the side of the fixed frame 41 close to the oil cylinder 3. When the elastic airbag 42 is in the fixed frame 41, it can only bulge toward the oil cylinder 3, so that the elastic sheet 43 can only bulge toward the oil cylinder 3, so as to increase the distance between the fixed bed 1 and the movable bed 2.

[0021] The elastic airbag 42 is connected to a pneumatic expansion member 6, which includes an air source pipe 61 and a pneumatic butterfly valve 62. The air source pipe 61 is fixed to the bottom of the moving bed 2 through a clamp, one end of the air source pipe 61 is connected to the air source, and the other end is connected to the pneumatic butterfly valve 62. The end of the pneumatic butterfly valve 62 away from the air source pipe 61 is connected to the elastic airbag 42. The pneumatic butterfly valve 62 is installed on the moving bed 2 to adjust the airflow input to the elastic airbag 42. The air source pipe 61 and the pneumatic butterfly valve 62 are used to transport or recover airflow to the elastic airbag 42.

[0022] Specifically, the combined design of the air source tube 61 and the pneumatic butterfly valve 62 enables the system to flexibly adjust the air pressure in the elastic airbag 42 according to the real-time detected pressure signal, thereby effectively avoiding discomfort or damage caused by excessive stretching, while ensuring that the stretching force reaches the intensity required for treatment. The dynamic expansion member can accurately adjust the airflow entering the elastic airbag 42 to ensure the best stretching effect within the range of body sensation that the patient can bear.

[0023] To further enhance the stretching effect on patients, refer to Figure 2 , Figure 5 and Figure 6 The pressure detection component 5 includes a comfort pressure sensor 51, a protection pressure sensor 53 and a controller 52. The protection pressure sensor 53 and the pneumatic butterfly valve 62 are both electrically connected to the controller 52. The protection pressure sensor 53 is installed on the fixed frame 41 and contacts the elastic airbag 42. The protection pressure sensor 53 receives the second pressure signal of the elastic airbag 42 to the fixed frame 41, and controls the second pressure signal to exceed the preset threshold value according to the preset pressure threshold value, so as to control the closing of the pneumatic butterfly valve 62. The cylinder 3 is connected to the controller 52 by electrical signals. The controller 52 controls the closing of the pneumatic butterfly valve 62 and controls the start of the cylinder 3 at the same time, so as to extend the piston rod of the cylinder 3 by a preset fixed distance, so as to increase the distance between the movable bed 2 and the fixed bed 1. In this embodiment, whenever the protective pressure sensor 53 sends out a second pressure signal after being subjected to a pressure exceeding a threshold value, causing the controller 52 to control the closing of the pneumatic butterfly valve 62, the controller 52 simultaneously controls the oil cylinder 3 to start. At this time, the piston rod of the oil cylinder 3 extends out by a preset fixed distance, which is the distance that the elastic airbag 42 deforms the elastic sheet 43 when the protective pressure sensor 53 reaches a threshold value.

[0024] Reference Figure 4 and Figure 6 A human body protection member 7 is provided on the movable bed 2 , and the human body protection member 7 is movably provided on the movable bed 2 to accommodate patients of different body shapes; a comfort pressure sensor 51 is installed on the human body protection member 7 to adjust its position synchronously with the human body protection member 7 .

[0025] The human body protection part 7 includes a protection installation frame 71 and a protection pad 72. The protection installation frame 71 is slidably set on the movable bed 2. Specifically, the protection installation frame 71 is locked on the movable bed 2 by bolts; the protection pad 72 is installed on the protection installation frame 71 by snap-fitting, and the comfort pressure sensor 51 is installed between the protection installation frame 71 and the protection pad 72. Specifically, the comfort pressure sensor 51 is embedded in the protection installation frame 71 and is attached to the protection pad 72. The end of the protection pad 72 away from the comfort pressure sensor 51 is in contact with the human body.

[0026] The comfort pressure sensor 51 is installed on the protection pad 72 to sense the pressure of the human body on the protection pad 72 to determine the stretching pressure. The comfort pressure sensor 51 is electrically connected to the controller 52. The comfort pressure sensor 51 sends a first pressure signal to the controller 52. The controller 52 receives the first pressure signal of the human body on the moving bed 2, and determines whether the control first pressure signal exceeds the preset threshold according to the preset pressure threshold, so as to control the pneumatic butterfly valve 62 to adjust the airflow rate entering the elastic airbag 42.

[0027] The comfortable pressure sensor 51 can monitor the pressure of the human body on the moving bed 2 in real time during the stretching process, and automatically adjust the airflow in the elastic airbag 42 according to the preset pressure threshold through the controller 52, thereby achieving fine adjustment of the position of the moving bed 2. This helps to ensure that the patient obtains the maximum stretching effect within a comfortable range of body sensation, thereby improving the safety and effectiveness of treatment.

[0028] In the controller 52 , the priority value of the second pressure signal sent by the protection pressure sensor 53 is greater than the first pressure signal sent by the comfort pressure sensor 51 .

[0029] The protective pressure sensor 53 can quickly close the pneumatic butterfly valve 62 when the pressure of the elastic airbag 42 on the fixed frame 41 exceeds a preset threshold, thereby preventing the elastic airbag 42 from being over-inflated and causing excessive deformation. Therefore, the priority of the protective pressure sensor 53 is higher than the comfort pressure sensor 51, ensuring that while protecting the patient, the driving mode can still be reasonably arranged according to the conditions of the cylinder 3 and the elastic airbag 42, thereby improving the reliability and safety of the entire system.

[0030] The implementation principle of the limb stretching device of an orthopedic electric comprehensive operating bed in the embodiment of the present application is as follows: the patient lies on the operating bed, and the medical staff first roughly adjusts the position of the mobile bed 2 through the oil cylinder 3 according to the patient's height. When the patient contacts the protection pad 72, it means that the rough adjustment is in place; then the air source is started and the pneumatic butterfly valve 62 is opened, and the elastic airbag 42 bulges in the direction of the oil cylinder 3 after the airflow is input. At this time, the elastic airbag 42 causes the elastic sheet 43 to deform, and the mobile bed 2 continues to move away from the fixed bed 1. At this time, the comfortable pressure sensor 51 continues to be pressurized by the protection pad 72 and transmits a first pressure signal to the controller 52. When the first pressure signal exceeds a preset threshold, it means that the squeezing force on the patient has basically reached the pressure level of ordinary people and is not suitable for continued stretching. The controller 52 receives the first pressure signal and controls the pneumatic butterfly valve 62 to adjust the airflow flow entering the elastic airbag 42 to stop the elastic airbag 42 from continuing to swell, and monitors the pressure of the human body on the mobile bed 2 in real time to achieve fine adjustment of the position of the mobile bed 2; it helps to ensure that the patient obtains the maximum stretching effect within a comfortable body sensation range, thereby improving the safety and effectiveness of treatment.

[0031] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An orthopedic electric comprehensive operating bed limb stretching device, comprising a fixed bed (1) and a movable bed (2), wherein the fixed bed (1) and the movable bed (2) are both placed on the ground, and a stretching driving member is arranged between the fixed bed (1) and the movable bed (2), and the stretching driving member is used to move the movable bed (2) closer to or away from the fixed bed (1), characterized in that: A fine-tuning auxiliary component (4) is provided between the moving bed (2) and the stretching drive member, and a pressure detection component (5) is provided on the moving bed (2). The pressure detection component (5) is used to detect the pressure of the human body on the moving bed (2) so as to enable the fine-tuning auxiliary component (4) to fine-tune the position of the moving bed (2).

2. The limb stretching device for an orthopedic electric comprehensive operating table according to claim 1, characterized in that: The stretching drive member is an oil cylinder (3), the cylinder body of the oil cylinder (3) is fixed to the bottom of the fixed bed (1), and the piston rod of the oil cylinder (3) is connected to the movable bed (2) via a fine-tuning auxiliary component (4).

3. The limb stretching device for an orthopedic electric comprehensive operating table according to claim 2, characterized in that: The fine-tuning auxiliary component (4) comprises a fixing frame (41), an elastic airbag (42) and an elastic sheet (43); the fixing frame (41) is fixed on the moving bed (2); the elastic airbag (42) is embedded in the fixing frame (41); the elastic sheet (43) is connected to one end of the fixing frame (41) close to the oil cylinder (3); the elastic airbag (42) can abut against the elastic sheet (43) to make the elastic sheet (43) bulge in the direction of the oil cylinder (3); the elastic airbag (42) is connected to a pneumatic expansion member (6); the pneumatic expansion member (6) is installed at the bottom of the moving bed (2) to deliver or recover airflow to the elastic airbag (42).

4. The limb stretching device for an orthopedic electric comprehensive operating table according to claim 3 is characterized in that: The fixing frame (41) is closed in the vertical direction, and the side of the fixing frame (41) away from the oil cylinder (3) is closed, so that the elastic air bag (42) can only bulge in the direction of the oil cylinder (3).

5. The limb stretching device for an orthopedic electric comprehensive operating table according to claim 3 is characterized in that: The pneumatic expansion member (6) comprises an air source pipe (61) and a pneumatic butterfly valve (62); the air source pipe (61) is installed at the bottom of the moving bed (2); one end of the air source pipe (61) is connected to the pneumatic butterfly valve (62); one end of the pneumatic butterfly valve (62) away from the air source pipe (61) is connected to the elastic airbag (42); the pneumatic butterfly valve (62) is installed on the moving bed (2) to adjust the airflow rate input to the elastic airbag (42).

6. The limb stretching device for an orthopedic electric comprehensive operating table according to claim 5, characterized in that: The pressure detection component (5) comprises a comfortable pressure sensor (51) and a controller (52). The comfortable pressure sensor (51) is installed on the moving bed (2) to sense the pressure between the human body and the moving bed (2) so as to determine the tensile pressure. The comfortable pressure sensor (51) and the pneumatic butterfly valve (62) are both electrically connected to the controller (52). The comfortable pressure sensor (51) sends a first pressure signal to the controller (52). The controller (52) receives the first pressure signal of the human body on the moving bed (2) and determines whether the first pressure signal exceeds the preset threshold according to a preset pressure threshold so as to control the pneumatic butterfly valve (62) to adjust the airflow entering the elastic airbag (42).

7. The limb stretching device for an orthopedic electric comprehensive operating table according to claim 6, characterized in that: The pressure detection component (5) further comprises a protection pressure sensor (53), the protection pressure sensor (53) being electrically connected to the controller (52), the protection pressure sensor (53) being mounted on the fixed frame (41) and in contact with the elastic airbag (42); the protection pressure sensor (53) receiving a second pressure signal from the elastic airbag (42) to the fixed frame (41), and judging whether the second pressure signal exceeds the preset threshold value according to a preset pressure threshold value, so as to control the closing of the pneumatic butterfly valve (62); in the controller (52), the priority value of the second pressure signal sent by the protection pressure sensor (53) is greater than the first pressure signal sent by the comfort pressure sensor (51).

8. The limb stretching device for an orthopedic electric comprehensive operating table according to claim 7, characterized in that: The oil cylinder (3) is connected to the controller (52) via an electrical signal. The controller (52) controls the pneumatic butterfly valve (62) to close and controls the oil cylinder (3) to start, so that the piston rod of the oil cylinder (3) extends a preset fixed distance, thereby increasing the distance between the movable bed (2) and the fixed bed (1).

9. The limb stretching device for an orthopedic electric comprehensive operating table according to claim 6, characterized in that: The movable bed (2) is provided with a human body protection member (7), and the human body protection member (7) is movably arranged on the movable bed (2) to accommodate patients of different body shapes; the comfortable pressure sensor (51) is installed on the human body protection member (7) to adjust its position synchronously with the human body protection member (7).

10. The limb stretching device for an orthopedic electric comprehensive operating table according to claim 9, characterized in that: The human body protection member (7) comprises a protection installation frame (71) and a protection pad (72); the protection installation frame (71) is slidably arranged on the movable bed (2); the protection pad (72) is installed on the protection installation frame (71); the comfort pressure sensor (51) is installed between the protection installation frame (71) and the protection pad (72); and one end of the protection pad (72) away from the comfort pressure sensor (51) contacts the human body.

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