Force measuring equipment for bone traction device for bone surgery

Abstract

The invention relates to the technical field of medical instruments, in particular to force measuring equipment for a bone traction device for bone surgery, which comprises an adjusting assembly, a force measuring assembly and a communication module, and is characterized in that the force measuring assembly comprises a testing cylinder spherically hinged to a traction bow, and a testing cover is arranged at one end, away from the traction bow, of the testing cylinder and is used for fixing a traction rope; a fixed pulley is further arranged in the testing cylinder and used for changing the direction of the pulling rope, and the adjusting assembly is used for fixing and adjusting the position of the pulling rope; the device further comprises a control system which is used for collecting first pressure information applied to a plurality of positions on the test cover by the test cylinder, obtaining the magnitude of traction force according to the maximum first pressure information, and obtaining the angle between the traction force and the horizontal plane and the deviation angle of the legs of the patient according to the distribution of the first pressure information. The method is used for rapidly obtaining the traction force in the bone traction process.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a force measuring device for a bone traction device used in orthopedic surgery. Background Art

[0002] Bone traction, also known as direct traction, is a treatment method that uses a steel needle or traction forceps to directly penetrate the bone and directly act on the bone to reach the injured part. Its basic principle is to use the principle of mechanical force to separate the bones through external force, thereby changing the position and shape of the bones to achieve the therapeutic effects of reduction, fixation and rest. In addition, bone traction is also affected by the combined effects of biology, physiology and biomechanics.

[0003] During the bone traction process, medical staff will use a traction bow and steel needles to fix it, then fix the traction rope on the traction bow, and then fix a weight or other heavy object on the other end of the traction rope to use its gravity to traction the patient.

[0004] During the entire traction process, the importance of testing the traction force cannot be ignored. By testing the traction force, the doctor can ensure that the size and direction of the traction force can accurately act on the fracture or dislocation site, thereby achieving the best reduction effect. If the traction force is too small, it may not be able to effectively combat muscle spasm or contraction, resulting in reduction failure; if the traction force is too large, it may cause unnecessary damage to bones and soft tissues. After reduction, appropriate traction can maintain stable fixation of the fracture ends and prevent re-displacement caused by muscle activity or other external forces. Testing the traction force helps doctors adjust to the most appropriate traction force to ensure the stability of the fracture ends.

[0005] However, most of the existing technologies adopt the method of reading the weights of weights or heavy objects in sequence and then adding them up. This solution requires manual participation throughout the process, which is likely to increase the workload of accompanying personnel or medical staff. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a force measuring device for a bone traction device for orthopedic surgery, which is used to quickly obtain the traction force during the bone traction process.

[0007] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a force measuring device for a bone traction device for orthopedic surgery, comprising an adjustment component, a force measuring component and a communication module, the force measuring component comprising a test cylinder hinged to a traction bow ball, a test cover is provided at one end of the test cylinder away from the traction bow, the test cover is used to fix the traction rope, a fixed pulley is also provided in the test cylinder, the fixed pulley is used to change the direction of the traction rope, and the adjustment component is used to fix and adjust the position of the traction rope;

[0008] It also includes a control system, which is used to collect the first pressure information applied by the test tube at several positions on the test cover, and obtain the size of the traction force according to the maximum first pressure information, and obtain the angle between the traction force and the horizontal plane and the angle of deviation of the patient's legs according to the size distribution of the first pressure information, and then control the communication module to output the size of the traction force, the angle between the traction force and the horizontal plane and the angle of deviation of the patient's legs to the user.

[0009] Further, the control system includes a plurality of first pressure sensors and a controller;

[0010] The first pressure sensors are used to collect first pressure information applied by the test cylinder on the test cover;

[0011] The controller is used to calculate the magnitude of the traction force corresponding to the largest first pressure information among all the first pressure information, obtain the angle between the traction force and the horizontal plane and the angle of deviation of the patient's legs according to the distribution of the first pressure information, and control the operation of the communication module to output the magnitude of the traction force, the angle between the traction force and the horizontal plane and the angle of deviation of the patient's legs to the user.

[0012] Furthermore, the adjustment component includes an air pump and a fixed frame, a fixed rod is provided on the fixed frame, a limit tube is ball-hinged inside the fixed rod, the inner wall of the limit tube is slidably matched with the traction rope, and a plurality of first air bags are circumferentially arranged on the outer wall of the limit tube, the first air bags are all connected to the air pump, and a first solenoid valve is provided at the connection point.

[0013] Further, the controller controls the operation of the air pump and the first solenoid valve according to the angle between the traction force and the horizontal plane and the angle of deviation of the patient's legs.

[0014] Furthermore, a sliding assembly is provided on the fixing frame, and the sliding assembly is used to adjust the height and horizontal position of the limiting tube.

[0015] Furthermore, a detection cover is provided on the traction rope, and a slot is opened on the detection cover. The detection cover is detachably connected to the traction rope through the slot, and the control system also includes a plurality of second pressure sensors, and the second pressure sensors are used to collect second pressure information applied by the limiting tube to various locations on the side wall of the detection cover. The controller determines whether the traction rope is in a relaxed state based on the second pressure information, and controls the communication module to operate when the traction rope is in a relaxed state.

[0016] Furthermore, the controller is also used to calculate the number of times the angle of the patient's leg deviation is greater than a preset angle within a unit time, compare the number with a preset value, and control the communication module to prompt the user when the number is greater than the preset value.

[0017] Furthermore, the controller is also used to receive the traction time input by the user, and obtain the initial traction force size at the beginning of the traction time, continuously compare the difference between the traction force size obtained in real time and the initial traction force size during the traction time, and control the communication module to work and prompt the user when the difference is greater than the preset difference.

[0018] Furthermore, a plurality of balls are provided on the inner side wall of the limiting tube, and the limiting tube is slidably matched with the traction rope through the balls.

[0019] Furthermore, the adjustment unit also includes a plurality of second airbags, which are fixedly connected to the inner wall of the limiting tube and are connected to the air pump. A second solenoid valve is provided at the connection point between the second airbags and the air pump. The controller is also used to control the operation of the second solenoid valve and the air pump when the increase rate of the traction force obtained in real time is greater than the preset increase rate.

[0020] Furthermore, the controller is also used to receive a prompt time input by a user, and calculate the actual traction time according to the time when the traction force appears, and when the actual traction time plus the prompt time is the same as the traction time input by the user, control the communication module to prompt the user.

[0021] Furthermore, the controller is also used to determine whether the test cylinder or the test cover is damaged according to the distribution of the first pressure information, and when the test cylinder or the test cover is damaged, the controller controls the communication module to prompt the user.

[0022] Technical principles and beneficial effects of the above scheme:

[0023] 1. This solution, through the setting of the force measuring component, uses the traction rope to drive the test cylinder to compress. Thus, the first pressure information of the test cylinder frame on the test cover is collected to obtain the magnitude of the traction force. Compared with the solution in the prior art that obtains the final traction force by superimposing the weight identification marks on all the weights, this solution does not require human participation, is faster and more accurate, and is conducive to reducing the workload of the accompanying personnel or medical staff in the process, and enables this solution to adapt to the existing traction device, thereby increasing the scope of application of this equipment.

[0024] 2. This scheme obtains the first pressure information of several positions on the test cover, and judges the angle between the traction force and the horizontal plane and the deviation angle of the patient's legs according to the distribution of the first pressure information, so as to obtain a more intuitive, accurate and objective value. Compared with the scheme of manual judgment by the naked eye, this scheme has higher accuracy. At the same time, this scheme can continuously monitor the angle between the traction force and the horizontal plane and the deviation angle of the patient's legs during the entire bone traction process, which is conducive to evaluating the effect of the entire bone traction process of the patient.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an axonometric view of an embodiment of a force measuring device for a bone traction device for orthopedic surgery of the present invention;

[0027] Figure 2 It is a rear view of an embodiment of a force measuring device for a bone traction device for orthopedic surgery of the present invention;

[0028] Figure 3 for Figure 2 AA section view;

[0029] Figure 4 for Figure 2 The enlarged view of point A in the middle;

[0030] Figure 5 for Figure 3 The enlarged view of point B in the middle;

[0031] Figure 6 for Figure 3 Enlarged view of point C in the middle;

[0032] Figure 7 The figure is a circuit diagram of an embodiment of a force measuring device for a bone traction device for orthopedic surgery of the present invention.

[0033] The figure marks in the drawings of the specification include: 1. traction bow; 2. force measuring assembly; 21. test cylinder; 22. test cover; 23. hook; 24. fixed pulley; 3. traction rope; 41. vertical rod; 42. first latch; 43. horizontal rod; 44. outer tube; 45. second latch; 5. adjustment assembly; 51. fixing rod; 52. detection cover; 53. first airbag; 54. limit tube; 55. second airbag; 6. weight. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The following is further described in detail through specific implementation methods:

[0038] As attached Figure 1 -Attached Figure 7 As shown: a force measuring device for a bone traction device for orthopedic surgery, comprising an adjustment component 5, a force measuring component 2 and a communication module, the force measuring component 2 comprising a test cylinder 21 which is ball-hinged with a traction bow 1, an opening for a traction rope 3 to enter is opened on the test cylinder 21, a test cover 22 is provided at one end of the test cylinder 21 away from the traction bow 1, a hook 23 is welded and fixed on the side wall of the test cover 22 close to the test cylinder 21, the test cover 22 is detachably connected to the traction rope 3 through the hook 23, a fixed pulley 24 is fixedly connected to the test cylinder 21 by bolts, the traction rope 3 is slidably matched with the fixed pulley 24, and the fixed pulley 24 is slidably matched with the traction rope 3. The wheel 24 is used to change the direction of the traction rope 3, and the adjustment component 5 is used to fix and adjust the position of the traction rope 3. The adjustment component 5 includes an air pump and a fixing frame. The fixing frame is provided with a fixing rod 51. The fixing rod 51 is internally ball-hinged with a limiting tube 54. The inner wall of the limiting tube 54 is slidably matched with the traction rope 3, and a plurality of first air bags 53 are circumferentially arranged on the outer wall of the limiting tube 54. The first air bags 53 are all bonded and fixed to the limiting tube 54, and the first air bags 53 are all bonded and fixed to the inner wall of the fixing rod 51. The first air bags 53 are all connected to the air pump, and the connection points are all provided with first solenoid valves;

[0039] It also includes a control system, which includes a plurality of first pressure sensors and a controller. The side walls of the test cover 22 close to the test cylinder 21 are divided into a plurality of sector-shaped areas. The first pressure sensors are fixedly connected to different sector-shaped areas by bolts, and the first pressure sensors are used to collect first pressure information applied by the test cylinder 21 on the test cover 22. The first pressure sensors and the communication module are both electrically connected to the controller. The controller is used to obtain the magnitude of the traction force according to the largest first pressure information among all the first pressure information, obtain the angle between the traction force and the horizontal plane and the angle of deviation of the patient's legs according to the distribution of the first pressure information, and control the communication module to output the magnitude of the traction force, the angle between the traction force and the horizontal plane and the angle of deviation of the patient's legs to the user.

[0040] The specific implementation process is as follows: when using the device, after the traction bow 1 is installed, the traction rope 3 is inserted into the test cylinder 21 from the opening position, and is hooked on the hook 23 around the fixed pulley 24, and then the other end of the traction rope 3 is passed through the fixed tube, and the traction rope 3 is inserted into the limiting tube 54, and then a weight 6 of appropriate weight is hung on the traction rope 3, and finally the traction rope 3 is released, so that the weight 6 pulls the traction rope 3, thereby performing bone traction on the patient. In this process, the traction rope 3 pulls the test plate to squeeze the test cylinder 21, and at the same time, the first pressure sensor continuously collects the first pressure information that is not applied to the corresponding fan-shaped area, and selects the first pressure information with the largest value among these first pressure information as the magnitude of the traction force. At the same time, since the traction process often makes the patient The legs are at a certain angle to the bed. Under the action of the gravity of the patient's legs, a certain relative rotation occurs between the traction bow 1 and the test cylinder 21. The axis of the test cylinder 21 and the axis of the test plate often appear at a certain angle. At this time, it will be difficult for part of the position below the test barrel to continue to press the test plate with the same pressure, so that the first pressure value of the fan-shaped area located below becomes smaller or zero. As the angle between the patient's legs and the bed surface decreases, the position where the first pressure value decreases will be further downward, and the fan-shaped area where the first pressure value is zero will also become less. Through these changes, the angle between the patient's legs and the bed surface, that is, the angle between the patient's legs and the horizontal plane, can be obtained. Similarly, when the patient shakes his feet left and right, the angle between the traction bow 1 and the test cylinder 21 When a certain relative rotation occurs, these rotations will cause the first pressure received by the fan-shaped area in the opposite direction of the patient's shaking direction to become smaller or zero. For example, when the patient shakes his legs to the right, the first pressure information received by the part of the fan-shaped area on the left is reduced or gradually becomes zero. The angle of the patient's leg deviation can be obtained according to the position where the first pressure information shows a decreasing trend and the position of the fan-shaped area where the first pressure information is zero. The controller controls the communication module to output the size of the traction force, the angle between the traction force and the horizontal plane, and the angle of the patient's leg deviation to the user, so as to help the user evaluate the patient's traction status at this time. When it is necessary to fine-tune the patient's leg deviation angle or the angle between the traction force and the horizontal plane, the user controls the air pump and the solenoid valve to open, and the air pump is used to adjust the angle of the patient's leg deviation. Gas is pumped into the first airbag 53, and the first airbag 53 expands to hold the limiting tube 54. Then, the air pump and the solenoid valve at the corresponding position are controlled to pump more gas into the first airbag 53 at the position opposite to the direction to be adjusted, thereby pushing the limiting rod to move to the corresponding position. For example, when the traction rope 3 needs to be adjusted upward, more gas is put into the first airbag 53 close to the traction bow 1 and below the limiting rod. This part of the first airbag 53 pushes the limiting rod to move upward, thereby completing the adjustment of the traction rope 3. Compared with the prior art, this solution is convenient and fast, and can adapt to different traction scenarios, is less affected by traction equipment, and can quickly obtain three sets of data: the size of the traction force, the angle between the traction force and the horizontal plane, and the angle of the patient's leg deviation.It can quickly help medical staff to judge and adjust the patient's traction status.

[0041] Based on the above scheme, in order to reduce the workload of medical staff, the air pump and the first solenoid valve are electrically connected to the controller, and the controller controls the air pump and the first solenoid valve to work according to the angle between the traction force and the horizontal plane and the angle of the patient's leg deviation. Therefore, when using the present device, when the first pressure information appears for the first time, that is, when the traction is in the initial state, the controller collects the initial values ​​of the angle between the traction force and the horizontal plane and the angle of the patient's leg deviation at this time, and finally continuously collects the angle between the patient's traction force and the horizontal plane and the angle of the patient's leg deviation during the entire traction process, and controls the air pump and the corresponding solenoid valve to work when any of the two angles is different from the initial value, and adjusts the position of the traction rope 3, thereby adjusting the position of the traction bow 1, so that the patient's legs are kept in a suitable position to reduce the problem of decreased bone traction effect caused by the movement of the patient's legs. Compared with the scheme of manual adjustment by medical staff, this scheme can reduce the workload of medical staff and at the same time, this scheme reacts quickly and can reduce the time that the patient maintains a position with poor bone traction effect.

[0042] Based on the above scheme, in order to further adjust the position of the traction rope 3, the fixing frame includes a cross bar 43, both ends of the cross bar 43 are slidably matched with the vertical bar 41, the sliding assembly includes a plurality of first holes opened on the vertical bar 41, and the cross bar 43 is provided with a corresponding second hole, the second hole is slidably matched with the first latch 42, and the first hole can be slidably matched with the first latch 42, the first latch 42 is used to limit the relative position of the cross bar 43 and the vertical bar 41, the cross bar 43 is slidably matched with an outer tube 44, and the cross tube is provided with a plurality of third holes, the outer tube 44 is provided with a fourth hole corresponding to the third hole, and the fourth hole is slidably matched with the second latch 45, the third hole can be slidably matched with the second latch 45, and the second The pin 45 is used to limit the relative position between the cross bar 43 and the outer tube 44. Therefore, before using the present device, the medical staff can remove the first pin 42 from the first hole and the second hole according to the specific situation of the patient, and then move the cross bar 43 to adjust it to a suitable height, and then insert the first pin 42 into the first hole and the second hole in turn, so as to fix the relative position of the cross bar 43 and the vertical bar 41, and then slide the outer surface so that the limiting tube 54 is in a suitable position, and then insert the second pin 45 into the third hole and the fourth hole, so as to fix the position of the limiting tube 54. The setting of the sliding component can increase the adjustment range of the lower tube, thereby increasing the adjustment range of the traction rope 3, thereby expanding the scope of application of the present device.

[0043] Based on the above scheme, in order to avoid the traction rope 3 from being entangled in the position of the bed body, so that after the heavy object 6 is placed, the traction rope 3 cannot be straightened at noon, which affects the traction effect, a detection cover 52 is provided on the traction rope 3, and a card slot is opened on the detection cover 52. The detection cover 52 is detachably connected to the traction rope 3 through the card slot, and the control system also includes a plurality of second pressure sensors, and the second pressure sensors are used to collect the second pressure information applied by the limiting tube 54 to various parts of the side wall of the detection cover 52. The second pressure sensor is electrically connected to the controller. The controller determines whether the traction rope 3 is in a relaxed state according to the second pressure information, and controls the communication module to work when the traction rope 3 is in a relaxed state. Therefore, when using the device, before traction, adjust The position of the detection cover 52 makes the side wall of the detection cover 52 close to one end of the limiting tube 54, and the second pressure sensor collects the second pressure information applied by the limiting tube 54 on the detection cover 52 in real time, and then releases the weight 6. Under the action of the weight 6, the traction rope 3 is pulled to shift and straighten. At this time, the traction rope 3 drives the detection cover 52 to move in the direction close to the limiting tube 54, so that the limiting tube 54 presses the side wall of the detection cover 52. At this time, the second pressure information increases. If it does not appear, the process may be a situation where the traction rope 3 has not increased in value. At this time, the controller controls the communication module to work and issues a user warning prompt to allow the user to check the traction rope 3 to avoid the problem that the traction force cannot reach the traction bow 1 in the subsequent traction process, resulting in poor traction effect.

[0044] Based on the above scheme, in order to reduce the patient's movement and affect the traction effect, the controller is also used to calculate the number of times the patient's leg deviation angle is greater than the preset angle within a unit time, and control the communication module to work to prompt the user when the number is greater than the preset value. Therefore, during the use of this device, the controller collects the patient's leg deviation angle in real time through the first pressure sensor. When the patient's leg deviation angle is greater than the preset angle, it immediately starts counting and recording the number of times the patient's leg deviation angle exceeds the preset angle within a unit time. If the number is greater than the preset value, the patient may move around during the bone traction process, which is very likely to affect the traction effect of the patient. At this time, the controller controls the communication module to warn the user, prompting the user to go to the patient's bedside to explain the precautions during the bone traction process or to promptly evaluate the patient's bone traction position status so as to quickly make the next adjustment.

[0045] Based on the above scheme, in order to prevent the patient's family from arbitrarily increasing or decreasing the traction force during the traction process, thereby affecting the traction effect and causing patient injury, the controller is also used to receive the traction time input by the user, and obtain the initial traction force at the beginning of the traction time, continuously compare the difference between the real-time traction force and the initial traction force during the traction time, and control the communication module to prompt the user when the difference is greater than the preset difference. Therefore, in the process of using the device, the user inputs the traction time required by the patient into the controller, and the controller obtains the traction force according to the first pressure information at the beginning of the traction time, and uses the traction force at this time as the initial traction force, and then continuously collects the traction force during the subsequent entire traction time, and compares the real-time traction force with the initial traction force to obtain the difference between the two. When the difference between the two is greater than the preset difference, the communication module is controlled to prompt the user. Prompt that the traction force has changed significantly, and there may be an act of the patient's family arbitrarily increasing or decreasing the weight of the weight 6.

[0046] Based on the above scheme, in order to reduce the influence of the friction between the limiting tube 54 and the traction rope 3 on the traction force, a plurality of balls are provided on the inner wall of the limiting tube 54, and the limiting tube 54 slides with the traction rope 3 through the balls. Therefore, during use, the balls can convert the sliding friction between the inner wall of the phase tube and the traction rope 3 into rolling friction, thereby reducing the friction between the inner wall of the limiting tube 54 and the traction rope 3, and reducing the friction force to offset the gravity of the weight 6, so that the traction force applied to the patient's legs is less different from the gravity of the weight 6, which makes it convenient for medical staff to adjust the traction force more accurately according to the gravity of the weight 6.

[0047] Based on the above scheme, in order to reduce the impact on the patient caused by the patient's family members privately increasing the weight of the heavy object 6, the adjustment unit also includes a plurality of second airbags 55, the second airbags 55 are bonded and fixed to the inner wall of the limiting tube 54, and the second airbags 55 are all connected to the air pump, and a second solenoid valve is provided at the connection point, and the second solenoid valve is electrically connected to the controller. The controller is also used to control the second solenoid valve and the air pump when the increase rate of the traction force obtained in real time is greater than the preset increase rate. Therefore, when using this device, the controller monitors the traction force in real time through the first pressure information. When the traction force increases and the increase rate is greater than the preset increase rate, the patient's family members may be privately increasing the weight of the heavy object 6. At this time, the controller controls the air pump and the second solenoid valve to work and pump gas into the second airbag 55. The second airbag 55 expands and compresses the traction rope 3, increasing the friction between it and the traction rope 3, thereby preventing the traction rope 3 from continuing to move toward the direction of the heavy object 6 to a certain extent, thereby reducing the impact of the abnormal increase of the heavy object 6 on the patient's legs.

[0048] Based on the above scheme, in order to facilitate medical staff to monitor the entire process of bone traction and reduce the working steps of medical staff, the control is also used to receive the prompt time input by the user, and calculate the actual traction time according to the time when the traction force appears, and when the actual traction time plus the prompt time is equal to the traction time input by the user, the communication module is controlled to work and prompt the user. Therefore, when using this device, the input controller class inputs the time required for traction and the traction time and the set prompt time. The controller starts to calculate the actual traction time according to the time when the traction force appears. When the actual traction time is added to the set prompt time and is equal to the required traction time, the controller controls the communication module to prompt the user, thereby prompting the user to go to the patient's position for subsequent work. This scheme effectively reduces the operating steps of medical staff, so that medical staff do not have to continue to pay attention to the patient's traction time, etc.

[0049] Based on the above scheme, in order to avoid the test cover 22 and the test cylinder 21 from being damaged due to continuous work, which may affect the test results, the controller is also used to determine whether the test cylinder 21 or the test cover 22 is damaged according to the distribution of the first pressure information, and when the test cylinder 21 or the test cover 22 is damaged, the controller controls the communication module to work and prompts the user. Therefore, when using this device, when the first pressure information appears, the controller determines the distribution state of the first pressure information. For example, when the left side of the fan-shaped area increases from bottom to top and then an area with a value of zero appears, and then the right side decreases from top to bottom, at this time, the area with a value of zero may be due to damage of the test cylinder 21, which makes the test cylinder 21 unable to fit with the test cover 22. The controller controls the communication module to work, warns the user, and prompts the user to repair the device in time to avoid digital errors and affect the patient's subsequent treatment.

[0050] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled 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 list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A force measuring device for a bone traction device for orthopedic surgery, characterized in that: The invention comprises an adjustment component (5), a force measuring component (2) and a communication module. The force measuring component (2) comprises a test cylinder (21) which is spherically hinged to the traction bow (1). A test cover (22) is provided at one end of the test cylinder (21) away from the traction bow (1). The test cover (22) is used to fix the traction rope (3). A fixed pulley (24) is also provided in the test cylinder (21). The fixed pulley (24) is used to change the direction of the traction rope (3). The adjustment component (5) is used to fix and adjust the position of the traction rope (3). The device also includes a control system, which is used to collect first pressure information applied by the test tube (21) at a plurality of positions on the test cover (22), obtain the magnitude of the traction force according to the maximum first pressure information, obtain the angle between the traction force and the horizontal plane and the angle of deviation of the patient's legs according to the magnitude distribution of the first pressure information, and then control the communication module to output the magnitude of the traction force, the angle between the traction force and the horizontal plane and the angle of deviation of the patient's legs to the user.

2. The force measuring device for bone traction device for orthopedic surgery according to claim 1, characterized in that: The control system includes a plurality of first pressure sensors and a controller; The first pressure sensors are used to collect first pressure information applied by the test cylinder (21) on the test cover (22); The controller is used to calculate the magnitude of the traction force corresponding to the largest first pressure information among all the first pressure information, obtain the angle between the traction force and the horizontal plane and the angle of deviation of the patient's legs according to the distribution of the first pressure information, and control the operation of the communication module to output the magnitude of the traction force, the angle between the traction force and the horizontal plane and the angle of deviation of the patient's legs to the user.

3. The force measuring device for bone traction device for orthopedic surgery according to claim 2, characterized in that: The adjustment component (5) comprises an air pump and a fixing frame, wherein a fixing rod (51) is provided on the fixing frame, a limiting tube (54) is spherically hinged inside the fixing rod (51), an inner wall of the limiting tube (54) is slidably matched with the traction rope (3), and a plurality of first air bags (53) are circumferentially arranged on the outer wall of the limiting tube (54), and the first air bags (53) are all connected to the air pump, and a first electromagnetic valve is provided at each connection point.

4. The force measuring device for a bone traction device for orthopedic surgery according to claim 3, characterized in that: The controller controls the air pump and the first solenoid valve to work according to the angle between the traction force and the horizontal plane and the angle of deviation of the patient's legs.

5. The force measuring device for bone traction device for orthopedic surgery according to claim 4, characterized in that: The fixed frame is provided with a sliding assembly, which is used to adjust the height and horizontal position of the limiting tube (54).

6. The force measuring device for bone traction device for orthopedic surgery according to claim 5, characterized in that: A detection cover (52) is provided on the traction rope (3), and a card slot is opened on the detection cover (52). The detection cover (52) is detachably connected to the traction rope (3) through the card slot, and the control system also includes a plurality of second pressure sensors, and the second pressure sensors are used to collect second pressure information applied by the limit tube (54) to various locations on the side wall of the detection cover (52). The controller determines whether the traction rope (3) is in a relaxed state based on the second pressure information, and controls the communication module to work when the traction rope (3) is in a relaxed state.

7. The force measuring device for a bone traction device for orthopedic surgery according to claim 6, characterized in that: The controller is also used to calculate the number of times the angle of the patient's leg deviation is greater than a preset angle within a unit time, compare the number with a preset value, and control the communication module to prompt the user when the number is greater than the preset value.

8. The force measuring device for a bone traction device for orthopedic surgery according to claim 7, characterized in that: The controller is also used to receive the traction time input by the user, and obtain the initial traction force size at the beginning of the traction time, continuously compare the difference between the real-time traction force size and the initial traction force size during the traction time, and control the communication module to work and prompt the user when the difference is greater than the preset difference.

9. The force measuring device for a bone traction device for orthopedic surgery according to claim 8, characterized in that: The inner side wall of the limiting tube (54) is provided with a plurality of balls, and the limiting tube (54) is slidably matched with the traction rope (3) via the balls.

10. The force measuring device for bone traction device for orthopedic surgery according to claim 9, characterized in that: The regulating unit further comprises a plurality of second airbags (55), the second airbags (55) being fixedly connected to the inner wall of the limiting tube (54), and the second airbags (55) being connected to the air pump, and a second solenoid valve being arranged at the connection point between the second airbags (55) and the air pump, and the controller being further used for controlling the second solenoid valve and the air pump to operate when the increase rate of the traction force obtained in real time is greater than a preset increase rate.

11. The force measuring device for a bone traction device for orthopedic surgery according to claim 10, characterized in that: The controller is also used to receive the prompt time input by the user, and calculate the actual traction time according to the time when the traction force appears, and when the actual traction time plus the prompt time is the same as the traction time input by the user, control the communication module to work and prompt the user.

12. The force measuring device for a bone traction device for orthopedic surgery according to claim 11, characterized in that: The controller is also used to determine whether the test cylinder (21) or the test cover (22) is damaged according to the distribution of the first pressure information, and to control the communication module to prompt the user when the test cylinder (21) or the test cover (22) is damaged.

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