Intelligent pneumatic orthopedic traction force regulation method and device

Abstract

The present application relates to the technical field of orthopedic correction traction device, and specifically provides an intelligent pneumatic orthopedic traction force regulation method and device, which comprises a fixing frame, a traction assembly is arranged on the fixing frame, the traction assembly is connected with a traction rope, the other end of the traction rope is connected with a traction bow, and a kirschner wire is arranged on the traction bow; when medical staff increases the pulling force of the traction assembly on the traction bow, the traction bow will increase the tension on both ends of the kirschner wire, so that the kirschner wire is prevented from being bent; when the medical staff reduces the pulling force of the traction assembly on the traction bow, the traction bow will reduce the tension on both ends of the kirschner wire, so that the problem of reduced service life caused by the kirschner wire being stretched under a large tension for a long time is avoided; no additional step-by-step operation is needed, the clinical adjustment process is simplified, the operation steps of medical staff are reduced, the work efficiency is improved, and the device is especially suitable for long-term treatment scenarios that require frequent fine adjustment of traction force.

Description

Technical Field

[0001] This invention relates to the field of orthopedic traction device technology, and in particular to an intelligent pneumatic orthopedic traction force control method and device. Background Technology

[0002] An orthopedic traction frame is a medical device used to treat orthopedic diseases such as fractures and joint dislocations.

[0003] For example, Chinese patent CN211067259U discloses a tension traction bow. This design uses a groove in the bolt shaft to engage with a nut and a washer. When the Kirschner wire is fixed in the groove, the washer squeezes the groove to form a closed space, allowing the Kirschner wire to contact the groove. After inserting the Kirschner wire into the patient's bone, medical staff need to adjust the tension of the traction bow on both ends of the Kirschner wire. This tension allows the Kirschner wire to remain straight. Then, the pulling force of the traction device on the traction bow is adjusted so that the Kirschner wire can pull the bone to the designated position and keep the bone in that position, thereby promoting the healing of the patient's bone.

[0004] However, in the above scheme, the tension adjustment of the traction bow at both ends of the Kirschner wire and the tension adjustment of the traction device on the traction bow are adjusted separately. If the tension is too small and the traction force is too large, the Kirschner wire will bend. If the tension is too large and the traction force is too small, it will affect the service life of the traction bow. Summary of the Invention

[0005] Therefore, it is necessary to provide an intelligent pneumatic orthopedic traction force control method and device to address the current problem that Kirschner wires are prone to bending and affecting the patient's bone recovery.

[0006] The above objectives are achieved through the following technical solutions:

[0007] A smart pneumatic orthopedic traction force control device, comprising:

[0008] A fixation frame is detachably mounted on the hospital bed. Rollers are rotatably mounted on the fixation frame, and a traction rope is wrapped around the outer circumference of the rollers.

[0009] A traction bow, one end of which is connected to the traction rope, and the other end of which is connected to a Kirschner wire, which is inserted into the patient's bone.

[0010] A traction assembly, located on the fixed frame, connected to the traction rope, is used to pull the traction bow;

[0011] The traction bow can adjust the tension at both ends of the Kirschner wire, and the tension is positively correlated with the pulling force exerted by the traction assembly on the traction bow.

[0012] Furthermore, the traction bow includes a crossbar, a traction rod, a first adjusting rod, a second adjusting rod, and a pull rod. The two ends of the crossbar are respectively hinged to one end of the two traction rods, and the other ends of the two traction rods are connected to the Kirschner wire.

[0013] The first adjusting rod is located between the two traction rods and both ends of the first adjusting rod are respectively hinged to one end of the two second adjusting rods, and the other ends of the two second adjusting rods are respectively slidably hinged to the part of the traction rod near the crossbar;

[0014] One end of the pull rod is connected to the middle position of the first adjusting rod, and the other end of the pull rod passes through the middle position of the crossbar and is connected to the pull rope;

[0015] A limiting plate is fixedly provided at the hinge position of the first adjusting rod and the second adjusting rod. The limiting plate is configured to restrict the second adjusting rod from rotating relative to the hinge position when the first adjusting rod approaches the crossbar.

[0016] Furthermore, a rotating disk is rotatably connected to one end of the traction rod that is connected to the Kirschner wire. A fixing hole is provided on the rotating disk along the radial direction, allowing the Kirschner wire to be inserted into the fixing hole. A monitoring component is provided on one end of the traction rod that is connected to the Kirschner wire, and the monitoring component is used to monitor the state of the Kirschner wire.

[0017] Furthermore, the monitoring component includes a hinge rod and a sensing rod. One end of the hinge rod is hinged to the portion of the traction rod near the Kirschner wire. The other end of the hinge rod is axially slidably inserted into one end of the sensing rod. The other end of the sensing rod is hinged to a connector, which is connected to the end of the Kirschner wire. A first elastic element is provided between the sensing rod and the hinge rod, and a first pressure sensor is provided between the first elastic element and the hinge rod.

[0018] Furthermore, a fastening screw is spirally connected to the outer circumference of the rotating disk. The fastening screw is arranged radially along the rotating disk, and one end of the fastening screw can extend into the fixing hole. The axis of the fastening screw is perpendicular to the axis of the fixing hole.

[0019] Furthermore, the pull rod has a first section and a second section. The first section is away from the first adjusting rod and has threads on its outer periphery. The second section is close to the first adjusting rod and has a smooth outer periphery. A through groove is provided in the middle of the crossbar. A spiral groove is provided on the inner periphery of the through groove. The through groove can be threaded with the first section or axially slidably engaged with the second section.

[0020] A limiting block is detachably provided at the position on the second section where it connects to the first adjusting rod, and the limiting block restricts the relative sliding of the pull rod and the first adjusting rod.

[0021] Furthermore, a connecting plate is rotatably connected to the end of the pull rod away from the first adjusting rod, and the connecting plate is connected to the pull rope.

[0022] Furthermore, the traction assembly includes a pneumatic telescopic cylinder and a second pressure sensor. The pneumatic telescopic cylinder is fixedly mounted on the fixed frame. A mounting plate is provided on the telescopic end of the pneumatic telescopic cylinder. A second elastic element is provided between the mounting plate and the telescopic end of the pneumatic telescopic cylinder. The second pressure sensor is located between the second elastic element and the mounting plate. The mounting plate is fixedly connected to the traction rope.

[0023] Furthermore, a top rod is threadedly connected to the fixing frame, a handle is provided at one end of the top rod, and a top plate is provided at the other end of the top rod, the top plate being able to abut against the hospital bed.

[0024] This invention also provides an intelligent pneumatic orthopedic traction force control method, comprising the following steps:

[0025] Step S100: First, install the fixation frame on the hospital bed, then insert the Kirschner wire into the patient's bone. The medical staff adjust the tension of the traction component on the Kirschner wire so that the Kirschner wire can pull the patient's bone.

[0026] Step S200: As the patient's bones heal, it is necessary to adjust the tension of the traction component on the Kirschner wire, and at the same time, it is also necessary to adjust the tension at both ends of the Kirschner wire.

[0027] In step S300, when medical staff adjust the tension of the traction assembly on the Kirschner wire, the traction rope pulls the traction bow, and the traction bow simultaneously adjusts the tension at both ends of the Kirschner wire.

[0028] The beneficial effects of this invention are:

[0029] This invention utilizes an adaptive linkage design of the traction bow to automatically adjust the tension of the Kirschner wire while medical staff adjust the tension of the traction component. When medical staff increase the tension of the traction component on the traction bow, the traction bow increases the tension on both ends of the Kirschner wire, allowing the Kirschner wire to withstand the increased tension and preventing bending. When medical staff reduce the tension of the traction component on the traction bow, the traction bow reduces the tension on both ends of the Kirschner wire, allowing the Kirschner wire to adapt to lower tension and preventing the lifespan reduction caused by prolonged exposure to high tension. This eliminates the need for additional step-by-step operations, simplifying the clinical adjustment process, reducing the number of steps required by medical staff, and improving work efficiency. It is particularly suitable for long-term treatment scenarios requiring frequent fine-tuning of traction force.

[0030] This invention features a monitoring component installed near the end of the Kirschner wire on the traction rod. When the Kirschner wire bends, it pushes the connector and sensing rod to compress the first elastic element. The first pressure sensor provides real-time feedback on the deformation state of the Kirschner wire through data fluctuations. Medical staff can adjust parameters in a timely manner based on the monitoring data to avoid skeletal traction deviation or soft tissue damage caused by latent deformation of the Kirschner wire, thereby improving treatment safety.

[0031] This invention features a first section and a second section on the pull rod. When adjusting the tension of the Kirschner wire within a preset range, the second section of the pull rod slides axially within a through groove, achieving automatic linkage between tension and pull force. When the adjustment range exceeds the preset range, the first section of the pull rod can be rotated into the threaded connection of the crossbar through groove, and the tension can be manually adjusted by rotating the pull rod. This invention is compatible with existing technology adjustment logic, satisfying both conventional precise adjustment needs and solving adjustment limitations in extreme scenarios, thus improving the applicability of the device. Attached Figure Description

[0032] Figure 1 A schematic diagram of the structure of an intelligent pneumatic orthopedic traction force control device provided in an embodiment of the present invention;

[0033] Figure 2 for Figure 1 A top view of an intelligent pneumatic orthopedic traction force control device provided in one embodiment;

[0034] Figure 3 for Figure 1 Left view of an intelligent pneumatic orthopedic traction force control device provided in one embodiment;

[0035] Figure 4 for Figure 3 A cross-sectional view along AA of the intelligent pneumatic orthopedic traction force control device provided in one embodiment, where the lever pulls the first adjusting rod;

[0036] Figure 5 for Figure 4 A partial enlarged view of part X of the intelligent pneumatic orthopedic traction force control device provided in one embodiment;

[0037] Figure 6 for Figure 4 A partial enlarged view of the Y part of the intelligent pneumatic orthopedic traction force control device provided in one embodiment;

[0038] Figure 7 for Figure 3 A cross-sectional view along AA of the intelligent pneumatic orthopedic traction force control device provided in one embodiment when the pull rod pushes the first adjusting rod;

[0039] Figure 8 for Figure 7A partial enlarged view of part Z of the intelligent pneumatic orthopedic traction force control device provided in one embodiment;

[0040] Figure 9 An exploded view of an intelligent pneumatic orthopedic traction control device provided in an embodiment of the present invention.

[0041] in:

[0042] 100. Fixture; 110. Rectangular opening; 120. Top rod; 130. Handle; 140. Top plate; 150. Roller;

[0043] 200. Traction bow; 210. Crossbar; 211. Through groove; 220. Traction rod; 221. Slide groove; 222. Rotating disk; 223. Fixing hole; 224. Fastening screw; 230. First adjusting rod; 240. Second adjusting rod; 250. Limiting plate; 260. Pull rod; 261. First section; 262. Second section; 263. Connecting plate; 270. Limiting block;

[0044] 300. Monitoring component; 310. Hinge rod; 320. Sensing rod; 330. First elastic element; 340. First pressure sensor; 350. Connector;

[0045] 400. Pulling assembly; 410. Pneumatic telescopic cylinder; 420. Mounting plate; 430. Second elastic element; 440. Second pressure sensor; 450. Pulling rope;

[0046] 500. Kirschner wire. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0048] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] The following reference Figures 1-9 This invention describes an intelligent pneumatic orthopedic traction force control device.

[0051] An intelligent pneumatic orthopedic traction force control device, suitable for bone correction traction, includes a fixation frame 100, which is detachably mounted on a hospital bed (not shown in the figure). The fixation frame 100 is equipped with rollers 150, and a traction rope 450 is wrapped around the outer periphery of the rollers 150. One end of the traction rope 450 is connected to a traction component 400, and the other end of the traction rope 450 is connected to a traction bow 200. A Kirschner wire 500 is connected to the end of the traction bow 200 away from the traction rope 450. The Kirschner wire 500 is inserted into the patient's bone to connect the bones. The traction component 400 pulls the traction rope 450 to pull the traction bow 200. The traction bow 200, through the Kirschner wire 500, pulls the bone to a designated position and maintains the bone in that position, thereby promoting bone healing.

[0052] In existing technology, when adjusting the tension on the Kirschner wire 500, the tension of the traction bow 200 on both ends of the Kirschner wire 500 is generally adjusted first. When the ends of the Kirschner wire 500 are subjected to axial tension, its bending resistance is improved. Then, the tension of the traction component 400 on the traction bow 200 is adjusted to ensure that the bone is subjected to appropriate force. As the patient's recovery time increases, the tension of the traction component 400 on the traction bow 200 needs to be adjusted again. Before adjusting the tension of the traction component 400 on the traction bow 200, medical staff need to adjust the tension at both ends of the Kirschner wire 500. Medical staff generally adjust the tension at both ends of the Kirschner wire 500 based on experience, which has limited adjustment precision and may result in excessive or insufficient tension.

[0053] For example, when the tension of the traction component 400 on the traction bow 200 is increased, the tension of the Kirschner wire 500 on the bone will increase. If the tension at both ends of the Kirschner wire 500 cannot adapt to the increased traction force, the Kirschner wire 500 will be subjected to a large tension and bend, which is not conducive to the patient's bone healing. When the tension of the traction component 400 is reduced, the tension of the Kirschner wire 500 on the bone will decrease. If the tension at both ends of the Kirschner wire 500 is too large, the Kirschner wire 500 will be in a taut state for a long time, which is not conducive to the long-term use of the Kirschner wire 500 and will reduce its service life.

[0054] Based on this, the present invention improves the traction bow 200 so that medical personnel can automatically adjust the tension of the traction bow 200 on both ends of the Kirschner wire 500 while adjusting the pulling force of the traction component 400 on the traction bow 200. Furthermore, the tension of the traction bow 200 on both ends of the Kirschner wire 500 is positively correlated with the pulling force of the traction component 400 on the traction bow 200. That is, when medical personnel increase the pulling force of the traction component 400 on the traction bow 200, the traction bow 200 will proportionally increase the tension on both ends of the Kirschner wire 500, thereby enabling the Kirschner wire 500 to withstand the increased tension and preventing it from bending. When medical personnel decrease the pulling force of the traction component 400 on the traction bow 200, the traction bow 200 will proportionally decrease the tension on both ends of the Kirschner wire 500, thereby allowing the Kirschner wire 500 to adapt to smaller pulling forces and preventing the Kirschner wire 500 from being under prolonged high tension, which could lead to a reduced lifespan.

[0055] Specifically, the traction bow 200 in this embodiment of the invention includes a crossbar 210, a traction rod 220, a first adjusting rod 230, a second adjusting rod 240, and a pull rod 260, as shown below. Figure 1 and Figure 2As shown, the two ends of the crossbar 210 are respectively hinged to one end of two traction rods 220, and the other ends of the two traction rods 220 are connected to Kirschner wires 500. The first adjusting rod 230 is located between the two traction rods 220, parallel to the crossbar 210, and the two ends of the first adjusting rod 230 are respectively hinged to one end of two second adjusting rods 240. The other ends of the two second adjusting rods 240 are slidably disposed on the portions of the two traction rods 220 near the crossbar 210. One end of the pull rod 260 is connected to the middle position of the first adjusting rod 230, and the other end of the pull rod 260 passes through the middle position of the crossbar 210 and is connected to the pull rope 450. When the pull assembly 400 pulls the traction rod 260, the pull rod 260 is connected to the middle position of the first adjusting rod 230. When the rope 450 is pulled, since one end of the traction rod 220 is connected to a Kirschner wire 500, and the Kirschner wire 500 is inserted into the patient's bone, the traction rope 450 will pull the first adjusting rod 230 closer to the crossbar 210. To allow the second adjusting rod 240 to push against the two traction rods 220, a limiting plate 250 is fixedly installed at the hinge position between the second adjusting rod 240 and the first adjusting rod 230. The limiting plate 250 is configured to restrict the second adjusting rod 240 from rotating relative to the first adjusting rod 230 around the hinge position when the first adjusting rod 230 moves closer to the crossbar 210, thereby allowing the other end of the second adjusting rod 240 to slide on the traction rod 220 to push against the two traction rods 220. Figure 6 As shown, the limiting plate 250 has two sections, and the included angle between the two sections is an obtuse angle. One section of the limiting plate 250 is fixed to the second adjusting rod 240 by bolts. The other section of the limiting plate 250 can abut against or disengage from the first adjusting rod 230. When the other section of the limiting plate 250 abuts against the first adjusting rod 230, the first adjusting rod 230 and the second adjusting rod 240 are restricted from rotating around the hinge position. When the second adjusting rod 240 rotates in the opposite direction, it can disengage from the limitation of the limiting plate 250.

[0056] It should be noted that in this embodiment, the traction rod 220 has two parts, and the included angle between the two parts is an obtuse angle. The traction rod 220 is also provided with a sliding groove 221, which is specifically located on a part of the traction rod 220 near the crossbar 210. The sliding groove 221 extends axially along a part of the traction rod 220. A guide post is fixedly provided on the second adjusting rod 240. The guide post is slidably disposed in the sliding groove 221. When the guide post moves in the sliding groove 221 toward the crossbar 210, it can push the two traction rods 220, thereby increasing the tension at both ends of the Kirschner wires 500 connected to the two ends of the traction rod 220 and improving the bending resistance of the Kirschner wires 500. Similarly, when the guide post moves in the sliding groove 221 away from the crossbar 210, it can reduce the tension at both ends of the Kirschner wires 500 connected to the two ends of the traction rod 220.

[0057] More specifically, to facilitate the connection between the Kirschner wire 500 and the traction rod 220, a rotating disk 222 is rotatably connected to the end of the traction rod 220 that connects to the Kirschner wire 500, such as... Figure 4 and 5 As shown, the rotating disk 222 can rotate around its own axis. A fixing hole 223 is provided on the rotating disk 222 along its radial direction. The fixing hole 223 is used to insert the Kirschner wire 500, and the end of the Kirschner wire 500 extends out of the fixing hole 223. At the same time, a monitoring component 300 is provided on the part of the traction rod 220 near the Kirschner wire 500. The monitoring component 300 is used to monitor the state of the Kirschner wire 500. For example, when the Kirschner wire 500 is bent and deformed, the monitoring component 300 can detect the bending and deformation of the Kirschner wire 500. When the Kirschner wire 500 is in a straight state and does not change, the monitoring component 300 can also detect the state of the Kirschner wire 500.

[0058] Specifically, the monitoring component 300 in this invention includes a hinged rod 310 and a sensing rod 320, such as... Figure 4 and Figure 5 As shown, one end of the hinge rod 310 is hinged to the part of the traction rod 220 near the Kirschner wire 500. The other end of the hinge rod 310 is axially slidably inserted into one end of the sensing rod 320. The other end of the sensing rod 320 is hinged to a connector 350. The connector 350 is used to connect the end of the Kirschner wire 500. The connector 350 has a cavity inside, which is filled with disinfectant. The end of the Kirschner wire 500 can be disinfected through the disinfectant inside the connector 350. In this embodiment, both traction rods 220 are provided with hinge rods 310 and sensing rods 320, and there are also two connectors 350. The two connectors 350 are respectively connected to the two ends of the Kirschner wire 500. A first elastic element 330, which is a spring, is provided between the sensing rod 320 and the hinge rod 310. When the first elastic element 330 is at its original length, the sensing rod 320 extends out of the hinge rod 310. A first pressure sensor 340 is provided between the first elastic element 330 and the hinge rod 310. When the Kirschner wire 500 bends and deforms, the rotating disk 222 rotates. When the rotating disk 222 rotates, it drives the connector 350 to move synchronously. When the connector 350 moves, it pushes the sensing rod 320, causing the sensing rod 320 to compress the first elastic element 330. At this time, the first pressure sensor 340 between the first elastic element 330 and the hinge rod 310 is subjected to the compressive force, thus being able to sense that the sensing rod 320 is being pushed. In this way, it can be known that the Kirschner wire 500 has bent and deformed. When the data fluctuation of the first pressure sensor 340 is large, it indicates that the degree of bending and deformation of the Kirschner wire 500 is large. When the data fluctuation of the first pressure sensor 340 is small, it indicates that the degree of bending and deformation of the Kirschner wire 500 is small.

[0059] More specifically, to make the connection between the Kirschner wire 500 and the rotating disk 222 tighter, such as Figure 5 As shown, a fastening screw 224 is spirally connected to the outer circumference of the rotating disk 222 and is arranged radially thereon. The axis of the fastening screw 224 is perpendicular to the axis of the fixing hole 223, and one end of the fastening screw 224 can be inserted into the fixing hole 223. After the Kirschner wire 500 passes through the fixing hole 223, the medical staff can turn the fastening screw 224 to rotate, so that one end of the fastening screw 224 tightly abuts against the outer circumference of the Kirschner wire 500, thereby firmly fixing the Kirschner wire 500 on the rotating disk 222.

[0060] In a further embodiment, the pull rod 260 of the present invention has a first section 261 and a second section 262. The first section 261 is away from the first adjusting rod 230 and has threads on its outer periphery. The second section 262 is close to the first adjusting rod 230 and has a smooth outer periphery. A through groove 211 is provided in the middle part of the crossbar 210. A threaded groove is provided on the inner periphery of the through groove 211. The first section 261 of the pull rod 260 can be threadedly engaged with the threaded groove on the inner periphery of the through groove 211. The second section 262 of the pull rod 260 is threadedly engaged with the through groove 211. 1. Axial sliding fit: When the second section 262 of the pull rod 260 is located in the through groove 211 and the pull rod 260 moves along its axial direction, the second section 262 of the pull rod 260 slides along the axial direction of the through groove 211, and the second section 262 slides in contact with the threaded groove on the inner circumference of the through groove 211; when the first section 261 of the pull rod 260 is located in the through groove 211, the first section 261 is threadedly engaged with the through groove 211, and medical personnel can drive the pull rod 260 to rotate around its own axis so that the pull rod 260 moves axially along the through groove 211.

[0061] It should be noted that when medical staff adjust the tension of the traction component 400 on the Kirschner wire 500 beyond the preset range (this preset range refers to the adjustment range where the tension at both ends of the Kirschner wire 500 is proportionally and adaptively adjusted when the tension is adjusted), it indicates that increasing the tension of the Kirschner wire 500 by the traction component 400 on the Kirschner wire 500 does not increase the tension at both ends of the Kirschner wire 500 proportionally. Specifically, when adjusting the tension of the traction component 400 on the Kirschner wire 500, the data from the first pressure sensor 340 of the monitoring component 300 will begin to fluctuate, meaning that the Kirschner wire 500 begins to bend, and therefore cannot be adjusted further by the first adjustment. Rod 230, second adjusting rod 240, and pull rod 260 adaptively adjust the tension of the two traction rods 220 on both ends of the Kirschner wire 500. At this time, the operator can move the first section 261 of pull rod 260 into the through slot 211 in the middle of crossbar 210, causing pull rod 260 to push the first adjusting rod 230 away from crossbar 210. Simultaneously, the guide post at the end of the second adjusting rod 240 will move to the end of the slide groove 221 near the Kirschner wire 500. At the same time, the second adjusting rod 240 rotates a certain angle around the hinge position of the first adjusting rod 230, causing the limiting plate 250 to almost restrict the second adjusting rod 240. The specific state is as follows: Figure 7 and Figure 8 As shown, at this time, the first adjusting rod 230 and the second adjusting rod 240 no longer rotate around the hinge position. When the medical staff drives the pull rod 260 to rotate around its own axis, it pushes the first adjusting rod 230 to move closer to the Kirschner wire 500, thereby causing the second adjusting rod 240 to push the two traction rods 220 away from each other. This increases the tension on both ends of the Kirschner wire 500. This structure is similar to the structure for adjusting the tension on both ends of the Kirschner wire 500 in the prior art. After adjusting the tension on both ends of the Kirschner wire 500, the pulling force on the Kirschner wire 500 is adjusted by the pulling component 400. This ensures that even if the tension on the Kirschner wire 500 exceeds the preset range, the tension on both ends of the Kirschner wire 500 can still be adjusted using the existing technology, avoiding the limitation of the invention when the preset range is exceeded.

[0062] To facilitate the movement of the pull rod 260 towards the Kirschner wire 500, a detachable limiting block 270 is provided on the second section 262 of the pull rod 260 in this embodiment. The limiting block 270 is used to prevent the second section 262 of the pull rod 260 from sliding relative to the first adjusting rod 230, thereby ensuring that when the first section 261 of the pull rod 260 rotates within the through groove 211, it can push the first adjusting rod 230 towards the Kirschner wire 500 to adjust the tension at both ends of the Kirschner wire 500. Simultaneously, the pull rod 260 is rotatably connected to the middle position of the first adjusting rod 230. To facilitate medical personnel driving the pull rod 260 to rotate around its own axis, a nut is coaxially and fixedly provided at the end of the pull rod 260. The rotation of the nut drives the pull rod 260 to rotate around its own axis.

[0063] Specifically, the traction assembly 400 in this embodiment includes a pneumatic telescopic cylinder 410 and a second pressure sensor 440, such as... Figure 1 As shown, the pneumatic telescopic cylinder 410 is fixedly mounted on the fixed frame 100. The pneumatic telescopic cylinder 410 is vertically arranged. The telescopic end of the pneumatic telescopic cylinder 410 is provided with a mounting plate 420. A second elastic element 430 is provided between the mounting plate 420 and the telescopic end of the pneumatic telescopic cylinder 410. The second pressure sensor 440 is provided between the second elastic element 430 and the mounting plate 420. The second pressure sensor 440 is used to sense the pressure between the mounting plate 420 and the second elastic element 430. In this embodiment, the mounting plate 420 is connected to one end of the pull rope 450. There are two pull ropes 450 in this invention, and a connecting plate 263 is rotatably provided on the end of the pull rod 260 away from the first adjusting rod 230. The connecting plate 263 has multiple pairs of connecting holes. One end of the two pull ropes 450 is fixedly connected to one pair of connecting holes, and the other end of the two pull ropes 450 is fixedly connected to the mounting plate 420. When the telescopic end of the pneumatic telescopic cylinder 410 extends, the two pull ropes 450 are pulled by the second elastic element 430 and the mounting plate 420. The two pull ropes 450 change the pulling direction through the roller 150 on the fixing frame 100, so that the two pull ropes 450 can pull the connecting plate 263, and the connecting plate 263 can then pull the pull rod 260, thereby adjusting the tension on the Kirschner wire 500.

[0064] It should be noted that the second elastic element 430 in this embodiment is a spring with a large elastic coefficient. When the telescopic end of the pneumatic telescopic cylinder 410 extends and pushes the mounting plate 420, the deformation of the second elastic element 430 is small, and the tension of the pulling rope 450 is sensed by the second pressure sensor 440, thereby reflecting the magnitude of the tension on the Kirschner wire 500.

[0065] In a further embodiment, to facilitate the fixation of the fixation frame 100 to the hospital bed, such as... Figure 1 , Figure 3 and Figure 9 As shown, the fixing frame 100 in this embodiment is provided with a rectangular opening 110. The rectangular opening 110 is used to install on the tail plate (not shown in the figure) at the foot of the hospital bed. A top rod 120 is threadedly connected to the side wall of the rectangular opening 110. The top rod 120 is perpendicular to the tail plate. A handle 130 is provided on one end of the top rod 120. The handle 130 is provided to facilitate medical staff to rotate the top rod 120. A top plate 140 is provided on the other end of the top rod 120. The top plate 140 can abut against the tail plate. When it is necessary to fix the fixing frame 100 to the hospital bed, the medical staff first hang the rectangular opening 110 of the fixing frame 100 on the tail plate, and then turn the handle 130 to drive the top rod 120 to rotate around its own axis, so that the top rod 120 moves axially to abut against the tail plate, thereby fixing the fixing frame 100 to the hospital bed.

[0066] The specific working process of the intelligent pneumatic orthopedic traction force adjustment device provided by the present invention will be described in conjunction with the above embodiments:

[0067] Mounting bracket 100:

[0068] The medical staff first hang the rectangular opening 110 of the fixation frame 100 on the tail plate (not shown in the figure), and then move the handle 130 of the push rod 120. The push rod 120 moves in the direction close to the tail plate and abuts against the tail plate. The push rod 120 fixes the fixation frame 100 to the hospital bed (not shown in the figure).

[0069] Install Kirschner wire 500:

[0070] After the patient's position on the hospital bed is determined, the medical staff inserts a Kirschner wire 500 into the bone, with both ends of the Kirschner wire 500 protruding from the bone. Then, the medical staff passes both ends of the Kirschner wire 500 through the fixing holes 223 of the rotating disks 222 on the two traction rods 220, and turns the fastening screws 224 to fix both ends of the Kirschner wire 500 to the two rotating disks 222.

[0071] Adjusting the tension of the Kirschner wire 500:

[0072] Medical staff connect the two connectors 350 of the traction bow 200 to both ends of the Kirschner wire 500, and then drive the telescopic rod of the pneumatic telescopic cylinder 410 to extend. The telescopic end of the pneumatic telescopic cylinder 410 pulls the traction rope 450 through the mounting plate 420. The other end of the traction rope 450 pulls the connecting plate 263. The connecting plate 263 drives the pull rod 260, thereby tautling the traction rope 450 to pull the Kirschner wire 500 and adjusting it to the required tension.

[0073] As the patient's bones gradually heal, it is necessary to adjust the Kirschner wire tension to 500 bar, and the adjustment range must be within the preset range:

[0074] Medical staff control the extension or retraction of the pneumatic telescopic cylinder 410 to adjust the tension of the traction rope 450 on the Kirschner wire 500. Since the second section 262 of the pull rod 260 is located within the through slot 211 of the crossbar 210, when adjusting the tension of the Kirschner wire 500, the pull rod 260 can pull the first adjusting rod 230 closer to the crossbar 210, thus pushing the two traction rods 220 away from each other. At this time, the tension of the traction rope 450 on the Kirschner wire 500 increases, causing the two traction rods 220 to exert a force on the Kirschner wire 500. The increased tension at both ends of the Kirschner wire 500 prevents bending deformation caused by increased tension. If the Kirschner wire 500 does bend, its two ends will push against the connector 350, which in turn pushes against the sensing rod 320. This causes the sensing rod 320 to compress the first elastic element 330, and the data from the first pressure sensor 340 between the first elastic element 330 and the hinge rod 310 will begin to fluctuate. Similarly, if the data from the first pressure sensor 340 does not fluctuate, it indicates that the Kirschner wire 500 has not bent.

[0075] As the patient's bones gradually heal, it is necessary to adjust the Kirschner wire tension to 500 bar, and if the adjustment range exceeds the preset range:

[0076] If medical staff find that the delivery of the first pressure sensor 340 starts to fluctuate when adjusting the telescopic end of the pneumatic telescopic cylinder 410, it indicates that the adjustment range is outside the preset range. In this case, it is necessary to change the method of adjusting the tension at both ends of the Kirschner wire 500. The adjustment method in the existing technology needs to be used, that is, first adjust the tension at both ends of the Kirschner wire 500 and then adjust the pulling force of the Kirschner wire 500. During the adjustment, the medical staff need to move the first section 261 of the pull rod 260 into the through groove 211 of the crossbar 210. At this time, the guide post at the end of the second adjusting rod 240 moves to the end of the slide groove 221 near the Kirschner wire 500. Furthermore, the second adjusting rod 240 and the first adjusting rod 230 cannot rotate around the hinge position. The medical staff drives the pull rod 260 to rotate around its own axis, thereby causing the pull rod 260 to push the first adjusting rod 230 away from the crossbar 210. The first adjusting rod 230 drives the two second adjusting rods 240 to push the two traction rods 220 so that the two traction rods 220 tend to move away from each other around the hinge position, thereby increasing the tension at both ends of the Kirschner wire 500. After the tension at both ends of the Kirschner wire 500 is adjusted, the length of the telescopic end of the pneumatic telescopic cylinder 410 is adjusted to adjust the tension of the Kirschner wire 500.

[0077] This invention also provides an intelligent pneumatic orthopedic traction force control method, which uses the aforementioned intelligent pneumatic orthopedic traction force control device and includes the following steps:

[0078] Step S100: First, install the fixation frame 100 on the hospital bed, then insert the Kirschner wire 500 into the patient's bones. The medical staff adjust the tension of the traction component 400 on the Kirschner wire 500 so that the Kirschner wire 500 can pull the patient's bones.

[0079] Step S200: As the patient's bones heal, it is necessary to adjust the tension of the traction component 400 on the Kirschner wire 500, and at the same time, it is also necessary to adjust the tension at both ends of the Kirschner wire 500.

[0080] In step S300, when medical staff adjust the tension of the traction component 400 on the Kirschner wire 500, the traction rope 450 pulls the traction bow 200, and the traction bow 200 simultaneously adjusts the tension at both ends of the Kirschner wire 500.

[0081] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An intelligent pneumatic orthopedic traction force control device, characterized in that, include: A fixation frame is detachably mounted on the hospital bed. Rollers are rotatably mounted on the fixation frame, and a traction rope is wrapped around the outer circumference of the rollers. A traction bow, one end of which is connected to the traction rope, and the other end of which is connected to a Kirschner wire, which is inserted into the patient's bone. A traction assembly, located on the fixed frame, connected to the traction rope, is used to pull the traction bow; The traction bow can adjust the tension at both ends of the Kirschner wire, and the tension is positively correlated with the pulling force exerted by the traction assembly on the traction bow; The traction bow includes a crossbar, a traction rod, a first adjusting rod, a second adjusting rod, and a pull rod. The two ends of the crossbar are respectively hinged to one end of the two traction rods, and the other ends of the two traction rods are connected to the Kirschner wire. The first adjusting rod is located between the two traction rods and both ends of the first adjusting rod are respectively hinged to one end of the two second adjusting rods, and the other ends of the two second adjusting rods are respectively slidably hinged to the part of the traction rod near the crossbar; One end of the pull rod is connected to the middle position of the first adjusting rod, and the other end of the pull rod passes through the middle position of the crossbar and is connected to the pull rope. When the pull rod rotates around its own axis, it pushes the first adjusting rod to move closer to the Kirschner wire, thereby causing the second adjusting rod to push the two traction rods to tend to move away from each other, thus increasing the tension on both ends of the Kirschner wire by the two traction rods. A limiting plate is fixedly provided at the hinge position of the first adjusting rod and the second adjusting rod. The limiting plate is configured to restrict the second adjusting rod from rotating relative to the hinge position when the first adjusting rod approaches the crossbar, thereby allowing the other end of the second adjusting rod to slide on the traction rod to push the two traction rods.

2. The intelligent pneumatic orthopedic traction force control device according to claim 1, characterized in that, A rotating disk is rotatably connected to one end of the traction rod that is connected to the Kirschner wire. A fixing hole is provided on the rotating disk along the radial direction, allowing the Kirschner wire to be inserted into the fixing hole. A monitoring component is provided on one end of the traction rod that is connected to the Kirschner wire, and the monitoring component is used to monitor the state of the Kirschner wire.

3. The intelligent pneumatic orthopedic traction force control device according to claim 2, characterized in that, The monitoring component includes a hinge rod and a sensing rod. One end of the hinge rod is hinged to the portion of the traction rod near the Kirschner wire. The other end of the hinge rod is axially slidably inserted into one end of the sensing rod. The other end of the sensing rod is hinged to a connector, which is connected to the end of the Kirschner wire. A first elastic element is provided between the sensing rod and the hinge rod, and a first pressure sensor is provided between the first elastic element and the hinge rod.

4. The intelligent pneumatic orthopedic traction force control device according to claim 2, characterized in that, A fastening screw is spirally connected to the outer circumference of the rotating disk. The fastening screw is arranged radially along the rotating disk. One end of the fastening screw can extend into the fixing hole. The axis of the fastening screw is perpendicular to the axis of the fixing hole.

5. The intelligent pneumatic orthopedic traction force control device according to claim 1, characterized in that, The pull rod has a first section and a second section. The first section is away from the first adjusting rod and has threads on its outer periphery. The second section is close to the first adjusting rod and has a smooth outer periphery. A through groove is opened in the middle of the crossbar. A spiral groove is provided on the inner periphery of the through groove. The through groove can be threaded with the first section or axially slidably engaged with the second section. A limiting block is detachably provided at the position on the second section where it connects to the first adjusting rod, and the limiting block restricts the relative sliding of the pull rod and the first adjusting rod.

6. The intelligent pneumatic orthopedic traction force control device according to claim 5, characterized in that, A connecting plate is rotatably connected to the end of the pull rod away from the first adjusting rod, and the connecting plate is connected to the pull rope.

7. The intelligent pneumatic orthopedic traction force control device according to claim 1, characterized in that, The traction assembly includes a pneumatic telescopic cylinder and a second pressure sensor. The pneumatic telescopic cylinder is fixedly mounted on the fixed frame. A mounting plate is provided on the telescopic end of the pneumatic telescopic cylinder. A second elastic element is provided between the mounting plate and the telescopic end of the pneumatic telescopic cylinder. The second pressure sensor is located between the second elastic element and the mounting plate. The mounting plate is fixedly connected to the traction rope.

8. The intelligent pneumatic orthopedic traction force control device according to claim 1, characterized in that, The fixing frame is threadedly connected to a top rod, one end of which is provided with a handle, and the other end of which is provided with a top plate, which can abut against the hospital bed.

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