Ankle joint fracture intraoperative traction reduction device

Abstract

The invention discloses an ankle joint fracture intraoperative traction reduction device, and relates to the technical field of medical instruments, the ankle joint fracture intraoperative traction reduction device comprises a bottom plate, one end of the bottom plate is provided with a leg fixing assembly, the middle part of the bottom plate is provided with a heel supporting and positioning assembly for positioning an ankle joint, and the bottom plate is slidably provided with a sole adjusting assembly for performing traction reduction on a sole; the leg of a patient is fixed through the leg fixing ring with the adjustable height, the heel of the patient is supported through the heel supporting plate with the adjustable height, the position, where steel nails need to be implanted, of the ankle joint of the patient is positioned through the ankle joint positioning mechanism, and the position of the ankle joint of the patient is adjusted through sliding adjustment of the plantar fixing plate and the plantar traction main plate mechanism. The foot sole of the patient is fixed by combining a fixing belt, and traction reduction adjustment is performed on the foot sole of the patient by rotating and adjusting a traction plate; the positioning device has the advantages of being accurate in positioning, convenient to use, stable in structure and wide in application range.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a traction and reduction device during ankle fracture surgery. Background Art

[0002] Ankle fracture is one of the common injuries in orthopedics, and reduction and fixation are key steps in its treatment. Traditional reduction methods often require large external forces for manual reduction, which not only increases the patient's pain, but may also lead to poor healing or malformation due to inaccurate reduction. Therefore, there is an urgent need for a tool that can accurately and stably reduce the fracture and reduce the patient's pain. In recent years, minimally invasive surgery has been widely used in the field of orthopedics. Compared with traditional surgery, minimally invasive surgery has the advantages of less trauma and faster recovery. Therefore, in the treatment of ankle fractures, more and more doctors have begun to try to use minimally invasive techniques. The development of traction reducers during ankle fracture surgery is in line with this trend, aiming to achieve fracture reduction and fixation in a minimally invasive way.

[0003] In the treatment of ankle fractures, traditional reduction methods have many shortcomings, such as unstable reduction effect and easy damage to surrounding soft tissues during reduction. Existing traction reducer products have relatively complex overall equipment structure, high cost, and high technical operation requirements. At the same time, although traction reducers are suitable for many types of ankle fractures, they are not suitable for all types of fractures. For some special types of fractures, such as comminuted fractures, comprehensive treatment may be required in combination with other treatment methods, and the scope of application is relatively small.

[0004] Existing ankle fracture reduction devices, such as a serial-parallel collaborative device based on ankle fracture reduction provided by publication number CN117356279A, include a redundant parallel platform, a reduction mechanical arm, a fixed foot cover assembly and a leg fixed assembly, the fixed ends of the triangular bracket and the reduction mechanical arm in the redundant parallel platform are respectively connected to the first mounting end and the second mounting end, in the redundant parallel platform, the square groove in the fixed foot cover assembly is connected to the working end of the arc-shaped clamp, the mounting end of the arc-shaped clamp is connected to the middle of the moving platform, the mounting hole of the moving platform adapter is connected to the first end of the motion branch, the second end of the motion branch is connected to the first end of the slide module, and the second end of the slide module is connected to the mounting end of the triangular bracket; however, the overall structure of the application is complex, which leads to excessively high manufacturing costs, and the application has high requirements for technical operation, is not suitable for use scenarios in emergency situations during surgery, and has a narrow scope of application. Summary of the invention

[0005] In view of the above-mentioned problems, the present invention aims to provide a traction and reduction device during ankle fracture surgery. By designing a leg fixation component, the patient's leg is fixed by an adjustable inflatable fixation ring structure. By designing a heel support positioning component, the patient's heel is supported by an adjustable heel support plate, and the patient's heel is inserted with adjustable fixation needles on both sides to locate the fixed position required for the operation. By designing a plantar adjustment component, the entire plantar can be adjusted at multiple angles. The device has the advantages of precise positioning, easy use, stable structure and a wide range of applications.

[0006] The main idea of ​​the technical solution adopted by the present invention is as follows: designing a leg fixing component, fixing the leg through a fixing ring with adjustable height and rotation angle, and adjusting the fixing airbag on the fixing ring by controlling the airbag to fix legs of different sizes; designing a heel support positioning component, providing support for the patient's heel through a heel support plate with adjustable height, and fixing the heel through heel fixing bolts on both sides, then adjusting the angle and height of the fixing pins on both sides, and inserting them into the heel to provide positioning for the implantation of the steel nail; designing a plantar adjustment component, horizontally adjusting the plantar traction main board and the plantar fixing plate through a sliding plate for use by patients with different plantar lengths, driving the plantar traction main board and the suction cup structure to adjust up and down through the adjusting bolt to drive the patient's plantar to adjust up and down, and adjusting the plantar fixing plate through the rotating structure to drive the patient's plantar to rotate and adjust.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is as follows: A traction and reduction device for ankle fracture surgery comprises a base plate, one end of which is provided with a leg fixing component, the middle of the base plate is provided with a heel support positioning component for positioning the ankle joint, and a sole adjustment component for traction and reduction of the sole of the foot is slidably arranged on the base plate.

[0008] The leg fixation assembly includes a leg support frame with adjustable height, a leg fixation ring is rotatably provided on the leg support frame, and a leg fixation airbag that can be adjusted by controlling the inflation of the airbag is fixed on the leg fixation ring; the airbag is controlled to inflate the leg fixation airbag so as to fix the legs of patients of different sizes to the leg fixation ring.

[0009] The heel support positioning assembly includes a support jack, a heel support plate is fixed above the support jack, heel fixing bolts are provided on both sides of the heel support plate, and ankle joint positioning mechanisms are also provided on both sides of the heel support plate; the patient's heel is placed in the heel support plate, and the patient's heel is fixed by tightening the heel fixing bolts.

[0010] The ankle joint positioning mechanism includes a traction shaft rotatably arranged on both sides of the heel support plate through a gear structure, a positioning block is sleeved on the traction shaft, and an ankle joint positioning needle is slidably arranged on the positioning block; by rotating the traction shaft and adjusting the positioning block up and down along the traction shaft, the position of the patient's ankle joint where the steel nail needs to be implanted is located, and the joint positioning needle is inserted into the ankle joint positioning position, so that the doctor can insert the fixed steel nail during surgery.

[0011] The plantar adjustment component includes a sliding plate slidably arranged on a bottom plate, a support rod with adjustable length is arranged on the sliding plate, a plantar fixing plate is rotatably arranged on the support rod via a lockable ball joint structure, and a plantar traction main board mechanism is rotatably arranged on one side of the plantar fixing plate close to the heel support positioning component via a rotating structure; the plantar fixing plate is adjusted in its entirety by adjusting the length of the support rod and rotating the angle of the plantar fixing plate.

[0012] The plantar traction main board mechanism comprises a plantar support plate, on which a traction plate is slidably arranged, and a traction plate adjusting bolt capable of adjusting the height of the traction plate is arranged at the bottom of the plantar support plate; a suction cup for adsorbing the sole of the foot is arranged at the top of the traction plate; the height and rotation angle of the traction plate are adjusted by rotating the adjustment support plate and by twisting the traction plate adjusting bolt, and the middle part of the sole of the patient is reset and adjusted as a whole in combination with the adsorption effect of the suction cup on the sole of the foot.

[0013] The sole fixing plate is also provided with a fixing belt for fixing the sole.

[0014] A method for using a traction reduction device during ankle fracture surgery comprises the following steps: S1. Adjust the height of the leg support frame and the rotation angle of the leg fixing ring, insert the patient's leg and the fractured foot into the leg fixing ring as a whole, make the patient's heel fit the heel support plate, use the control airbag to inflate the leg fixing airbag, and fix the leg; S2, adjusting the height of the support jack, and then sliding the adjustment sliding plate to adjust the overall distance between the heel support plate and the sole adjustment assembly; S3, fit the sole of the patient's foot to the suction cup on the top of the sole support plate, fix the sole of the foot with a fixing belt, rotate and adjust the sole fixation plate and the sole traction main board mechanism, and traction the entire fractured foot of the patient to restore it to a normal state; S4. Tighten the heel fixing bolts on both sides of the heel support plate to fix the patient's heel, rotate and adjust the traction shaft, and adjust the positioning block up and down to locate the patient's ankle joint, push the joint positioning needle into the ankle joint positioning position, and locate the steel nail implantation position.

[0015] The beneficial effects of the present invention are: 1. By designing a heel support positioning component, the heel of the patient in a state of fracture or comminuted fracture is fixed during surgery, and the ankle joint positioning needle is positioned through a rotatable and adjustable traction shaft and a positioning block that can be adjusted up and down, and the ankle joint positioning point is inserted through the ankle joint positioning needle to implant a steel nail for fixing the ankle joint, so that the positioning accuracy of the present invention is improved, which is convenient for steel nail implantation and is beneficial to the patient's postoperative recovery.

[0016] 2. By designing the leg fixation component, the leg fixation airbag on the leg fixation ring is used to fix the patient's leg, the heel is fixed with the heel fixation bolt, and the sole of the patient's foot is fixed after traction reduction with a fixing belt, so that the overall structure of the device is stable and the overall fixation effect of the patient's leg and foot is improved.

[0017] 3. By designing the leg fixation component, the heel support positioning component and the sole adjustment component, the mechanism in each component can be adjusted in height according to the actual application scenario, and can be rotated and adjusted according to the overall size of the legs and feet of patients of different body shapes, and can also perform traction and reduction on the soles of patients with different fracture conditions, thereby improving the overall scope of application of the device, and the adjustment method of each component of the device is simple, which is convenient for doctors to make quick adjustments during surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a front view of the present invention after removing the control airbag; Figure 3 This is a side view of the present invention after removing the control airbag; Figure 4 This is a top view of the present invention after removing the control airbag; Figure 5 A schematic diagram of the three-dimensional structure of the heel support positioning component; Figure 6 A schematic diagram of the three-dimensional structure of the heel support positioning component from another perspective; Figure 7 for Figure 5 A local detail view at point A; Figure 8 for Figure 6 A local detail view at point B; Fig. 9 is a schematic diagram of the three-dimensional structure of the sole adjustment component; Fig.10 A schematic diagram of the three-dimensional structure of the sole adjustment component from another perspective; Fig.11 It is a schematic diagram of the three-dimensional structure inside the rotating structure of the sole adjustment component; Fig.12 It is a cross-sectional view of the rotating structure in the plantar adjustment assembly.

[0019] Among them: 1. bottom plate; 101. leg support frame fixing plate; 102. jack fixing plate; 103. guide rail; 2. leg fixing assembly; 201. leg support frame; 202. leg fixing ring; 203. leg fixing airbag; 204. control airbag; 3. heel support positioning assembly; 301. support jack; 3011. jack adjustment rod; 302. heel support plate; 303. heel fixing bolt; 304. ankle joint positioning mechanism; 3041. traction shaft; 3042. positioning block; 3043. ankle joint positioning needle; 3044. positioning needle fixing frame; 3045. traction shaft adjustment gear; 4 , plantar adjustment assembly; 401, sliding plate; 4011, sliding plate locking pin; 402, support rod; 403, ball joint; 404, ball joint connecting rod; 405, plantar fixing plate; 406, rotating structure; 4061, rotating shell; 4062, support plate gear shaft; 4063, driven shaft; 4064, plantar fixing plate connecting gear shaft; 4065, gear bearing sleeve; 407, plantar traction main board mechanism; 4071, plantar support plate; 4072, traction plate; 40721, limit block; 4073, traction plate adjustment bolt; 4074, suction cup; 4075, pressure spring; 5, fixing belt. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] The inventors have found that traditional reduction methods often require a large external force for manual reduction, which not only increases the patient's pain, but may also cause poor healing or malformation due to inaccurate reduction. The existing traction reducer products have a relatively complex overall structure, high cost, and high technical operation requirements. At the same time, although the traction reducer is suitable for many types of ankle fractures, it is not suitable for all types of fractures. For some special types of fractures, such as comminuted fractures, it may be necessary to combine other treatment methods for comprehensive treatment, and the scope of application is relatively small.

[0022] Based on the above findings, the present application proposes a traction and reduction device for ankle fracture surgery, designs a leg fixation component, fixes the leg through an adjustable fixing ring, and inflates the fixing airbag by controlling the airbag to fix legs of different sizes; designs a heel support positioning component, provides support for the patient's heel through an adjustable height heel support plate, and fixes the heel through heel fixing bolts on both sides, then adjusts the angle and height of the fixing pins on both sides, and inserts them into the heel to provide positioning for the implantation of the steel nail; designs a plantar adjustment component, laterally adjusts the plantar traction main board and the plantar fixing plate through a sliding plate for use by patients with different plantar lengths, drives the plantar traction main board and the suction cup up and down through the adjusting bolt, and adjusts the plantar fixing plate to drive the patient's plantar to rotate and adjust; it has the advantages of precise positioning, easy use, stable structure and wide range of application.

[0023] See also Figure 1-Figure 4 The present application discloses a traction and reduction device for ankle fracture surgery, including a base plate 1, the base plate 1 is made of a metal material with good strength as a whole, a leg support frame fixing plate 101 for fixing a leg support frame 201 is provided at one end of the base plate 1, and a jack fixing plate 102 for fixing a support jack 301 is provided near the middle of the base plate 1. At the same time, a guide rail 103 is provided on the side of the jack fixing plate 102 away from the leg support frame fixing plate 101, and a sliding plate 401 is slidably installed on the guide rail 103.

[0024] A leg fixing assembly 2 is provided on one end of the base plate 1, i.e., the leg support frame fixing plate 101, and the leg fixing assembly 2 includes a leg support frame 201 with adjustable height, and the lower section of the leg support frame 201 is a more common sliding rod structure, which is fixed to the leg support frame fixing plate 101 by means of threaded connection or the like; in some embodiments, the sliding rod structure can also be replaced by a device such as a jack; a mounting frame is rotatably mounted on the top of the sliding rod structure, and the two ends of the mounting frame are rotatably connected to the two sides of the leg fixing ring 202 by means of a rotating shaft connection, so that the leg fixing ring 202 can be rotatably adjusted relative to the sliding rod structure to be adjusted in combination with the patient's legs. In some embodiments, a locking structure capable of locking the leg fixing ring 202 can be optionally provided at the connection between the leg fixing ring 202 and the leg support frame 201 to prevent the leg fixing ring 202 from rotating when the patient's legs are fixed in the leg fixing ring 202; The leg fixing ring 202 is specifically located on the inner end surface of the leg fixing ring 202, and a leg fixing airbag 203 that can be adjusted by controlling the inflation of the airbag 204 is fixed by sewing or bonding. The leg fixing airbag 203 is annular in shape as a whole, evenly distributed along the inner end surface of the leg fixing ring 202, and has good elasticity. When performing a steel nail implantation operation on the ankle joint of the patient, the patient's leg is first inserted as a whole through the leg fixing ring 202, and the heel of the patient is brought into contact with the subsequent heel support positioning component 3. At this time, by pressing the control airbag 204, the leg fixing airbag 203 is adjusted. The bag 204 inflates the leg fixing airbag 203 to fix the patient's leg to the leg fixing ring 202. By adjusting the amount of gas filled into the leg fixing airbag 203 by the control airbag 204, it can be adjusted according to the sizes of different patients' legs, which can improve the overall applicability of the device. In some embodiments, a pressure regulating valve or other device can be provided at the connection between the leg fixing airbag 203 and the control airbag 204 to prevent gas transmission between the airbags when the legs are in a fixed state, thereby improving the fixation effect of the leg fixing ring 202 on the patient's legs.

[0025] See also Figure 5-Figure 8 The middle part of the bottom plate 1, specifically the jack fixing plate 102, is provided with a heel support positioning assembly 3 for positioning the fractured ankle joint. The heel support positioning assembly 3 includes a support jack 301. The support jack 301 is fixed to the jack fixing plate 102 by threaded connection or bolt fixing. The support jack 301 is a more common hydraulic jack product. The height of the support jack 301 can be adjusted by repeatedly pressing down or lifting up the jack adjustment rod 3011 at the bottom thereof. A heel support plate 302 is fixed on the support jack 301 by welding or threaded connection. The overall structure of the heel support plate 302 is close to a bucket shape, and a depression capable of accommodating the heel of the patient is provided in the middle thereof. The heel support plate 302 is made of a metal material with good strength as a whole. At the same time, heel fixing bolts 303 are provided on both sides of the heel support plate 302. When the heel of the patient is completely attached to the middle of the heel support plate 302, the heel fixing bolts 303 are screwed in to fix the heel of the patient. Ankle joint positioning mechanisms 304 are also provided on both sides of the heel support plate 302. The ankle joint positioning mechanisms 304 include traction shafts 3041 rotatably provided on both sides of the heel support plate 302. Specifically, the traction shaft 3041 is L-shaped as a whole, and mounting seats are fixed on both sides of the bottom of the heel support plate 302. The horizontal section of the traction shaft 3041 is rotatably installed in the mounting seat to form a rotatable connection with the heel support plate 302. At the same time, gears are also fixed on the horizontal section of the traction shaft 3041. Rotatable gears are provided on both sides of the heel support plate 302, and the gears are meshed with the gears on the traction shaft 3041. When the traction shaft 3041 is rotated, the rotation speed of the traction shaft 3041 can be reduced by gear meshing transmission, so that the accuracy of the rotation adjustment of the traction shaft 3041 is improved, which is conducive to the accurate positioning of the ankle joint steel nail implantation. A positioning block 3042 is sleeved on the vertical section of the traction shaft 3041. Specifically, the positioning block 3042 is a slider structure with a hollow middle portion, one end of which is tightly matched with the traction shaft 3041. A positioning needle fixing frame 3044 is slidably provided on the positioning block 3042, and an ankle joint positioning needle 3043 is fixed on the positioning needle fixing frame 3044. The doctor can slide the positioning block 3042 up and down along the traction shaft 3041 to precisely adjust the height of the ankle joint positioning needle 3043, and combine the rotation adjustment of the traction shaft 3041 to accurately locate the implantation position of the steel nail at the ankle joint. After the positioning is completed, the positioning needle fixing frame 3044 can be pushed horizontally to insert the ankle joint positioning needle 3043 into the skin at the ankle joint, so that the doctor can determine the implantation position of the steel nail, which is beneficial to improving the efficiency of the implantation surgery. At the same time, the positioning needle 3043 is a minimally invasive needle, which can reduce the damage to the patient's ankle joint during positioning.

[0026] See also Fig. 9 as well as Fig.10 A sole adjustment component 4 for traction and resetting the sole of the foot is slidably arranged on the bottom plate 1, and the sole adjustment component 4 includes a sliding plate 401 slidably arranged on the guide rail 103, and a sliding plate locking pin 4011 capable of locking the sliding plate 401 relative to the guide rail 103 is also arranged on one side of the sliding plate 401, so as to improve the reliability of the device as a whole. By adjusting the sliding plate 401 laterally along the guide rail 103, the sliding plate 401 can be adjusted according to the sole length of different patients when the ankle joint of the patient is in a fixed state, so that the flexibility of the device as a whole is improved, thereby improving the scope of application of the device; The sliding plate 401 is provided with a support rod 402 of adjustable length by means of threaded connection or bolt fixing, and the support rod 402 is rotatably connected to the ball joint connecting rod 404 by means of a ball joint 403. At the same time, a plurality of locking pins capable of locking the ball joint 403 are also provided at the connection between the top of the support rod 402 and the bottom of the ball joint connecting rod 404. A plantar fixing plate 405 is fixed at the top of the ball joint connecting rod 404 by means of threaded connection or the like. A plantar traction main board mechanism 407 is rotatably provided on one side of the plantar fixing plate 405 close to the heel support positioning assembly 3 by means of a rotating structure 406. At the same time, a fixing belt 5 for fixing the sole of the patient's foot is also provided on the plantar fixing plate 405; Since the patient's ankle joint may have fractures of varying degrees, and the sole of the foot may be in a folded state to varying degrees, the ball-jointed connecting rod 404 is rotated to adjust the sole of the foot 405 and the sole traction main board mechanism 407 as a whole, so as to adjust the sole of the patient in different states. When the sole of the patient fits to the surface of the sole of the foot 405 and the sole traction main board mechanism 407, the fixing belt 5 is used to fix the sole of the patient to the sole of the foot 405, and then the sole of the patient is slowly and carefully restored to a normal stretched state by rotating the sole of the foot 405, and after the adjustment is completed, the ball joint 403 is locked with a locking pin to fix the sole of the patient as a whole.

[0027] See also Fig.11 as well as Fig.12 The rotating structure 406 includes a rotating shell 4061, a gear bearing sleeve 4065 is provided at the top of the rotating shell 4061, a plantar fixing plate connecting gear shaft 4064 is meshed and connected in the gear bearing sleeve 4065, and the top of the plantar fixing plate connecting gear shaft 4064 is rotatably mounted to one side of the plantar fixing plate 405, so that the plantar traction main board mechanism 407 and the plantar fixing plate 405 can be rotated and adjusted in the horizontal direction. At the same time, a driven shaft 4063 is provided in the middle part of the rotating shell 4061, and a supporting plate gear shaft 4062 meshed and connected with the driven shaft 4063 is provided at the bottom of the rotating shell 4061. One end of the supporting plate gear shaft 4062 passes through the rotating shell 4061 and is fixed to one end of the plantar support plate 4071, so that the plantar traction main board mechanism 407 can be rotated and adjusted in the vertical direction relative to the plantar fixing plate 405; Since the sole of the patient may be bent to different degrees in the horizontal direction due to fractures of different degrees, the sole traction main board mechanism 407 can be rotated horizontally or vertically relative to the sole fixing plate 405 through the rotating structure 406, so as to further reposition and traction the sole of the patient's foot. Moreover, through the mutual cooperation between the gear bearing sleeve 4065 and the gear shaft 4064 connected to the sole fixing plate, and the mutual cooperation between the driven rotating shaft 4063 and the gear shaft 4064 connected to the sole fixing plate, the sole of the patient can be precisely rotated and adjusted to improve the repositioning and traction accuracy of the sole of the patient, so that the doctor can subsequently treat the fracture of the sole of the patient, which is conducive to improving the recovery speed of the patient. The plantar traction main board mechanism 407 includes a plantar support plate 4071, on which a traction plate 4072 is slidably arranged, the plantar support plate 4071 matches the overall shape of the traction plate 4072, and the top two sides of the traction plate 4072 are provided with limit blocks 40721 capable of limiting the position of the patient's sole; the vertical plate located on one side of the plantar support plate 4071 is fixedly connected to one end of the support plate gear shaft 4062 passing through the rotating shell 4061, so that the plantar traction main board mechanism 407 as a whole can be vertically rotated and adjusted relative to the plantar fixing plate 405, so as to drive the patient's sole to be traction-reset; The bottom of the support plate 4071 is provided with a traction plate adjusting bolt 4073 capable of adjusting the height of the traction plate 4072. Specifically, a pressure spring 4075 is provided between the support plate 4071 and the traction plate 4072, and the bottom of the pressure spring 4075 is fixed to the top of the circular push plate. The bottom of the circular push plate is directly opposite to the traction plate adjusting bolt 4073. When the traction plate adjusting bolt 4073 is screwed in, the pressure spring 4075 can be squeezed by squeezing the push plate, and the traction plate 4072 can be pushed out along the top of the support plate 4071 to adjust the height of the traction plate 4072. At the same time, the top of the support plate 4071 is provided with a suction cup 4074 for adsorbing the sole of the foot. When the traction plate 4072 is adjusted, the adsorption effect of the suction cup 4074, combined with the limiting effect of the limiting block on the traction plate 4072 and the fixing effect of the fixing belt 5, can prevent the sole of the patient's foot from falling off the sole adjustment component 4, which is beneficial to improving the overall stability of the device.

[0028] In some embodiments, all structures of the device except the leg fixation airbag 203, the control airbag 204 and the ankle positioning needle 3043 can be made of all carbon fiber materials. This allows the doctor to observe the patient's ankle fracture reduction through C-arm intraoperative fluoroscopy when performing ankle fracture repair surgery on the patient, thereby improving the reduction quality.

[0029] In some embodiments, the leg support frame 201, the support jack 301 and the support rod 402 can be replaced with an electric push rod structure. At the same time, a motor structure capable of controlling the rotation of the traction shaft 3041 can be added to the bottom of the heel support plate 302, or a motor structure for control can be added to other rotating structures. By adjusting the length of the electric push rod and controlling the rotation of various parts of the device by controlling the motor structure, it is convenient for the doctor to adjust the device under C-arm fluoroscopy during surgery to achieve accurate reduction of the fracture.

[0030] A method for using a traction reduction device during ankle fracture surgery comprises the following steps: S1, adjusting the height of the leg support frame 201 and the rotation angle of the leg fixing ring 202, inserting the patient's leg and the fractured foot into the leg fixing ring 202 as a whole, making the patient's heel fit the heel support plate 302, using the control airbag 204 to inflate the leg fixing airbag 203, and fixing the leg to the leg fixing ring 202; S2. According to the overall state of the patient's leg and heel, the height of the support jack 301 is adjusted, and then the sliding plate 401 is slidably adjusted along the guide rail 103 to adjust the overall distance between the heel support plate 302 and the sole adjustment component 4; S3, attach the patient's foot to the suction cup 4074 on the top of the sole support plate 4071, fix the sole with the fixing belt 5, rotate and adjust the sole fixing plate 405 and the sole traction main board mechanism 407, and traction the entire fractured foot of the patient to restore it to a normal state; S4. Tighten the heel fixing bolts 303 on both sides of the heel support plate 302 to fix the patient's heel, rotate and adjust the traction shaft 3041, and adjust the positioning block 3042 up and down to position the patient's ankle joint, push the positioning needle fixing frame 3044, drive the joint positioning needle 3043 to penetrate into the patient's ankle joint positioning position, and locate the steel nail implantation position. Clinical application cases

[0031] When performing ankle joint fixation surgery on a patient, the patient lies flat on the operating table, the device is placed on the operating table or on a horizontal platform below the operating table, and the heights of the leg support frame 201, the support jack 301 and the support rod 402 are adjusted respectively, so that the doctor can fix the patient's leg and ankle joint; Lift the patient's leg, pass the patient's leg as a whole through the leg fixing ring 202, and make the patient's heel fit into the depression in the middle of the heel support plate 302, and then adjust the rotation and height of the leg fixing ring 202 again. After the adjustment is completed, use the control airbag 204 to input gas into the leg fixing airbag 203 to fix the patient's leg; According to the overall length of the patient's sole, the sliding plate 401 is adjusted along the guide rail 103, and the sole fixing plate 405 and the sole traction main plate mechanism 407 are adjusted in angle as a whole, so that the patient's sole fits to the upper surface of the sole fixing plate 405 and the traction plate 4072. At this time, the fixing belt 5 can be used to tie the distal end of the patient's sole to traction and reset the sole; Slowly rotate and adjust the sole fixing plate 405 and the sole traction main plate mechanism 407 to drive the entire sole of the patient to return to a normal state. At this time, the ball joint 403 can be locked using a locking pin to maintain the entire state of the sole of the patient; The heel fixing bolts 303 on both sides of the heel support plate 302 are screwed in to fix the patient's heel to the heel support plate 302, and then the traction shaft 3041 is rotated to adjust, and the positioning 3042 is adjusted up and down to position the ankle joint fixation. After the positioning is completed, the ankle joint positioning needles 3043 on both sides are inserted into the skin of the patient's ankle joint, so that the doctor can implant the steel nails and other structures used to fix the ankle joint into the patient's ankle joint, thereby improving the recovery speed of the patient's ankle joint.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A traction and reduction device for ankle fracture surgery, comprising a base plate (1), characterized in that: A leg fixing component (2) is provided at one end of the base plate (1), a heel support positioning component (3) for positioning a fractured ankle joint is provided in the middle of the base plate (1), and a sole adjustment component (4) for traction and resetting the sole of a patient's foot is slidably provided on the base plate (1).

2. The traction and reduction device for ankle fracture surgery according to claim 1, characterized in that: The leg fixing assembly (2) comprises a height-adjustable leg support frame (201), a leg fixing ring (202) being rotatably provided on the leg support frame (201), and a leg fixing airbag (203) being fixed on the leg fixing ring (202) and capable of being adjusted by controlling the inflation of the airbag (204).

3. The traction and reduction device for ankle fracture surgery according to claim 1, characterized in that: The heel support positioning assembly (3) comprises a support jack (301), a heel support plate (302) is fixed above the support jack (301), heel fixing bolts (303) are provided on both sides of the heel support plate (302), and ankle joint positioning mechanisms (304) are also provided on both sides of the heel support plate (302).

4. The traction and reduction device for ankle fracture surgery according to claim 3, characterized in that: The ankle joint positioning mechanism (304) comprises a traction shaft (3041) rotatably arranged on both sides of the heel support plate (302), a positioning block (3042) sleeved on the traction shaft (3041), and an ankle joint positioning pin (3043) slidably arranged on the positioning block (3042).

5. The traction and reduction device for ankle fracture surgery according to claim 1, characterized in that: The sole adjustment component (4) comprises a sliding plate (401) slidably arranged on the bottom plate (1); a support rod (402) of adjustable length is arranged on the sliding plate (401); a sole fixing plate (405) is rotatably arranged on the support rod (402); and a sole traction main plate mechanism (407) is rotatably arranged on a side of the sole fixing plate (405) close to the heel support positioning component (3).

6. The traction and reduction device for ankle fracture surgery according to claim 5, characterized in that: The sole traction main plate mechanism (407) comprises a sole support plate (4071), a traction plate (4072) being slidably arranged on the sole support plate (4071), and a traction plate adjustment bolt (4073) capable of adjusting the height of the traction plate (4072) being arranged at the bottom of the sole support plate (4071).

7. The traction and reduction device for ankle fracture surgery according to claim 6, characterized in that: The top of the traction plate (4072) is provided with a suction cup (4074) for adsorbing the sole of the patient's foot.

8. The traction and reduction device for ankle fracture surgery according to claim 5, characterized in that: The sole fixing plate (405) is also provided with a fixing belt (5) for fixing the sole of the patient's foot.

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