Orthopedic surgery angle positioning device

Abstract

The application relates to the technical field of orthopedic surgery, and provides an orthopedic surgery angle positioning device, which comprises a bottom plate, the top of the outer surface of the bottom plate is fixedly connected with two fixed blocks, the outer surfaces of the two fixed blocks close to the top are movably connected with connecting strips, the interiors of the two connecting strips are slidably connected with limiting grooves, the top of the outer surface of each connecting strip is fixedly connected with a fixed square block, the outer surfaces of the two connecting strips close to the two fixed square blocks are provided with limiting grooves, in the embodiment of the application, rotating a second threaded rod makes a moving square block slide in the limiting groove to the direction of the fixed square block, the limiting groove has a limiting effect on the moving square block during sliding, and when the moving square block approaches the fixed square block, the whole device can be clamped above a sickbed; the two connecting strips arranged on the bottom plate can make the whole device more stable when the whole device is fixed on the sickbed.

Description

Technical Field

[0001] This invention relates to the field of orthopedic surgery technology, and in particular to an orthopedic surgical angle positioning device. Background Technology

[0002] Fracture surgery is divided into two types: internal fixation and external fixation. Among them, the Kirschner wire method is a commonly used internal fixation method. When fixing the Kirschner wire, one end of the Kirschner wire needs to be attached to the electric drill. Then the electric drill is turned on and the Kirschner wire is driven into the bone that needs to be fixed. During the operation, if the doctor shakes the electric drill, it will cause the angle and position of the insertion to be inaccurate. At this time, the Kirschner wire needs to be removed and re-inserted. A single operation often requires multiple insertions, which will aggravate collateral damage, further disrupt blood supply, prolong the operation time, and thus affect the treatment effect.

[0003] A Chinese patent with publication number CN116966049A discloses an adjustable-angle positioning device for orthopedic joint surgery, relating to the field of orthopedic joint surgery technology. The device includes a support column, an adjustment component, a winding component, and a positioning component. The adjustment component is fixed to the support column. The adjustment component is used to adjust the tilt angle. The winding component is fixed to both the adjustment component and the support column. The winding component is used to adjust the height of the patient's arm. The positioning component is fixed to the winding component. This device achieves a frustum-shaped fixing component structure, facilitating finger insertion and removal. The mesh formed by the interlacing of elastic ropes allows the entire device to deform and contract when a finger is inserted, increasing friction, conforming to the finger, and improving stability. The mesh design also provides heat dissipation, effectively preventing sweating of the fingers when they are still for extended periods, which could affect the fixing effect.

[0004] CN109806012A discloses an orthopedic surgical angle positioning device. When positioning for orthopedic surgery, this invention only requires positioning the surgical site using a positioning component, ensuring the surgical site reference is as concentric as possible with the center of the positioning component. Then, the position of the reference rod is adjusted according to the surgical angle and location. First, the position of the reference rod is slid to a suitable angle, and the angle of the reference rod is corrected using the length dimension on the reference rod. After adjustment, the difference between the scale of the reference rod and the arc diameter of the upper arc seat is equal to the arc diameter of the arc seat. This invention uses a sliding plate and hinge connection, allowing for highly flexible adjustment. After positioning, it is fixed, and then surgery can be performed on the relevant surgical site using a surgical needle, or the relevant position can be marked using a surgical needle, and surgery can be performed using relevant instruments, such as drilling. This invention provides accurate and reliable positioning, improving the precision and convenience of orthopedic surgery.

[0005] CN115381555A discloses a surgical robot specifically designed for orthopedic procedures, comprising: a surgical controller, a positioning device, and a surgical operating mechanism. The surgical controller controls the operation process of the orthopedic procedure, the positioning device positions the surgical operating mechanism to a target location matching the specific body part, and the surgical operating mechanism performs surgical operations on the specific body part at the target location in response to the control commands of the surgical controller. The structure of the surgical operating mechanism is matched to the specific body part; for example, the length of the robotic arm, the angle of the rotation axis of the rotating mechanism, the lifting range of the lifting mechanism, and the function and shape of the operating components are all matched to the specific body part. It fully considers the characteristics of the local structure of the human body, featuring a simple and miniaturized structure that facilitates installation and maintenance. By using this orthopedic surgical robot, targeted orthopedic surgeries can be performed on specific body parts at low cost and with simple operation.

[0006] While the aforementioned solutions are simple in structure, miniaturized, and easy to install and maintain, and can perform targeted orthopedic surgeries on specific areas at low cost and with simple operation, providing accurate and reliable positioning, thus improving the precision and convenience of orthopedic surgery and effectively preventing sweaty fingers from affecting fixation when the fingers are not in place for a long time, these solutions do not provide adequate fixation of the device. Furthermore, the three aforementioned solutions are relatively large, making them inconvenient for staff to carry and move, and since they are all supported on the ground, placing them on either side of the operating table during surgery would occupy the staff's space and reduce work efficiency. In contrast, this solution fixes the entire positioning device to the operating table, is detachable and easy to carry, is lightweight, and does not occupy the space available to medical staff during surgery. Summary of the Invention

[0007] The purpose of this invention is to solve the problem that existing technologies have a large size, making them inconvenient for staff to carry and move. They are all supported on the ground, and when placed on both sides of the operating table during surgery, they occupy the staff's activity space during surgery.

[0008] To achieve the above objectives, the present invention employs the following technical solution: an orthopedic surgical angle positioning device, comprising: a base plate; two fixing blocks are fixedly connected to the top of the outer surface of the base plate; connecting strips are movably connected to the outer surfaces of the two fixing blocks near their tops; limiting grooves are slidably connected inside the two connecting strips; fixing blocks are fixedly connected to the top of the outer surfaces of the two connecting strips; limiting grooves are formed on the outer surfaces of the two connecting strips near the two fixing blocks; and second threaded rods are movably embedded in the top of the outer surfaces of the two connecting strips on one side; one end of each of the two second threaded rods is rotated via a bearing. The device is connected to a movable block, and two movable blocks are slidably connected inside two limiting grooves. Two hydraulic cylinders are fixedly connected to the top of the outer surface of the base plate. A top plate is fixedly connected to the top of the outer surface of the two hydraulic cylinders. A support plate is fixedly connected to one side of the outer surface of the top plate. Multiple third threaded rods are rotatably connected to the top of the outer surface of the support plate through bearings. The multiple third threaded rods are evenly divided into three groups. Semicircular strips are movably sleeved on the outer surface of each of the three groups of third threaded rods. Cotton strips are fixedly connected to the bottom of the outer surface of each of the multiple semicircular strips. The multiple third threaded rods are movably connected to the top of the outer surface of the support plate.

[0009] The technical advantages of the above-mentioned further solution are as follows: The entire device is small in size and lightweight due to its aluminum alloy material, making it easy for medical staff to lift with one hand. The connecting strip is aligned with the base frame of the hospital bed, and the second threaded rod is rotated to allow the moving block to slide towards the fixed block within the limiting groove. The limiting groove limits the movement of the moving block. When the moving block approaches the fixed block, the entire device can be clamped above the hospital bed. Two connecting strips on the base plate ensure greater stability when the device is fixed to the hospital bed. The top plate can raise or lower the support plate connected to it. Simultaneously, rotating the two third threaded rods causes the semicircular strip to rise and fall. The patient places their arm at the bottom of the semicircular strip, and rotating the two third threaded rods moves the semicircular strip downwards and fixes it to the patient's arm. This accommodates patients with arms of varying sizes. The cotton swab is in contact with the patient's arm; its soft cotton material makes the contact between the semicircular strip and the patient's skin more comfortable during surgery, and the arm fixation makes it easier for medical staff to perform the surgery.

[0010] In a preferred embodiment, a first threaded rod is movably embedded inside the top plate, one end of the first threaded rod is movably embedded in the inner wall of the top plate, and one end of the first threaded rod is fixedly connected to a rotating shaft.

[0011] The technical effect of adopting the above-mentioned further solution is that the top plate can be raised or lowered by starting the two hydraulic cylinders with the power supply. At this time, the surgical instruments inside the U-shaped clamp can move up and down and rotate, and move in a horizontal semi-circular motion. During the operation, the surgical site of the patient can be treated from multiple angles.

[0012] In a preferred embodiment, a limiting rod is fixedly connected to the inside of the top plate near the first threaded rod, and a movable strip is movably sleeved on the outer surface of the first threaded rod, the movable strip being movably sleeved on the outer surface of the limiting rod.

[0013] The technical effect of adopting the above-mentioned further solution is that: rotating the shaft drives the first threaded rod to rotate, and while rotating, the moving bar slides back and forth under the limit of the limiting rod, and while sliding, it drives the L-shaped rod to move back and forth.

[0014] In a preferred embodiment, an L-shaped rod is fixedly connected to the top of the moving bar near the outer surface of the limiting rod, a motor is fixedly connected to the inner wall of the L-shaped rod near its top, and a U-shaped movable block is fixedly connected to the output end of the motor.

[0015] The technical effect of adopting the above-mentioned further solution is that: rotating the shaft drives the first threaded rod to rotate, and while rotating, the moving bar slides back and forth under the limit of the limiting rod, and while sliding, it drives the L-shaped rod to move back and forth.

[0016] In a preferred embodiment, an electric push rod is movably connected to the top of the outer surface of the U-shaped movable block, a U-shaped clamping block is movably connected to the outer surface of the U-shaped movable block, the electric push rod is movably connected to the top of the outer surface of the U-shaped clamping block, and a sliding groove is formed on the inner wall of the U-shaped clamping block near its top.

[0017] The technical effect of adopting the above-mentioned further solution is that: by starting the electric push rod with the power supply, the extension and retraction of the rotating rod can make the U-shaped clamp block rotate in a horizontal semi-circular manner inside the U-shaped movable block, thereby driving the surgical instruments inside the U-shaped clamp block to move in a horizontal semi-circular manner.

[0018] In a preferred embodiment, a rotating rod is movably embedded on the outer surface of the U-shaped clamp near its top, one end of the rotating rod is fixedly connected to a gear, and a locking block is slidably connected inside the slide groove.

[0019] The technical effect of adopting the above-mentioned further solution is that the power-starting motor can make the U-shaped movable block rotate 360 ​​degrees, thereby causing the U-shaped clamp on one side to drive the surgical instrument fixed inside to rotate 360 ​​degrees.

[0020] In a preferred embodiment, a rack is fixedly connected to the top of the outer surface of the block, the rack is meshed with the outer surface of the gear, and a spring is fixedly connected to the outer surface of the block.

[0021] The technical effect of adopting the above-mentioned further solution is that when the clamping block moves to one side, the surgical instrument can be placed in the middle of the U-shaped clamping block and the clamping block. Then, the finger is released from the rotating rod, and under the action of the spring, the clamping block slides inside the slide groove to the opposite side of the spring. When sliding, the clamping block clamps and fixes the surgical instrument.

[0022] In a preferred embodiment, one end of the spring is fixedly connected to the outer surface of the U-shaped clamp, and the locking block is movably connected to the outer surface of the U-shaped clamp.

[0023] The technical effect of the above-mentioned further solution is as follows: rotating the rotating rod causes the clamping block connected by the rack to move towards the spring. The clamping block slides inside the slide groove and limits its movement. At the same time, when the clamping block moves to one side, the surgical instrument can be placed in the middle of the U-shaped clamping block and the clamping block. Then, the finger is released from the rotating rod, and under the action of the spring, the clamping block slides inside the slide groove to the opposite side of the spring. When sliding, the clamping block clamps and fixes the surgical instrument.

[0024] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0025] 1. In this embodiment of the invention, the entire device is small in size and made of lightweight aluminum alloy, allowing medical staff to pick it up with one hand. The connecting strip is aligned with the base frame of the hospital bed. Rotating the second threaded rod causes the moving block to slide towards the fixed block within the limiting groove. The limiting groove limits the movement of the moving block. When the moving block approaches the fixed block, the entire device can be clamped above the hospital bed. Two connecting strips on the base plate ensure greater stability when the device is fixed to the hospital bed. The top plate can raise or lower the support plate connected to it. Simultaneously, rotating the two third threaded rods causes the semicircular strip to rise and fall. The patient places their arm at the bottom of the semicircular strip. Rotating the two third threaded rods moves the semicircular strip downwards and fixes it to the patient's arm. This accommodates patients with arms of varying sizes. The cotton swab contacts the patient's arm; the soft cotton material makes the contact between the semicircular strip and the patient's skin more comfortable during surgery, and the arm fixation facilitates the operation for medical staff.

[0026] 2. In this embodiment of the invention, rotating the shaft drives the first threaded rod to rotate. Simultaneously, the rotating rod causes the moving bar to slide back and forth under the limitation of the limiting rod. This sliding motion drives the L-shaped rod to move back and forth. Rotating the rotating rod causes the clamping block connected by the rack and pinion to move towards the spring. The clamping block slides inside the groove, limiting its movement. Simultaneously, when the clamping block moves to one side, the surgical instrument can be placed between the U-shaped clamping block and the clamping block. Then, releasing the rotating rod with a finger causes the clamping block to slide inside the groove towards the opposite side of the spring under the action of the spring. During this sliding motion, the clamping block clamps and fixes the surgical instrument. At this time, the power is activated by the electric motor. The push rod and the extension and retraction of the rotating rod allow the U-shaped clamp to rotate laterally in a semi-circular manner inside the U-shaped movable block. This allows the surgical instruments inside the U-shaped clamp to move laterally in a semi-circular manner. Starting the motor with the power supply allows the U-shaped movable block to rotate 360 ​​degrees, thereby causing one side of the U-shaped clamp to rotate the surgical instruments fixed inside it 360 degrees. Starting the two hydraulic cylinders with the power supply allows the top plate to be raised or lowered. At this time, the surgical instruments inside the U-shaped clamp can move up and down and rotate, moving laterally in a semi-circular manner. During surgery, multi-angle treatment of the patient's surgical site can be performed. Attached Figure Description

[0027] Figure 1 A three-dimensional structural diagram of an orthopedic surgical angle positioning device provided by the present invention;

[0028] Figure 2 This is an enlarged structural diagram of point A of an orthopedic surgical angle positioning device provided by the present invention;

[0029] Figure 3 This invention provides a schematic diagram of the structure of the U-shaped movable block in an orthopedic surgical angle positioning device.

[0030] Figure 4 This is a side view of an orthopedic surgical angle positioning device provided by the present invention;

[0031] Figure 5 This is a top view schematic diagram of an orthopedic surgical angle positioning device provided by the present invention;

[0032] Figure 6 This is a frontal view of an orthopedic surgical angle positioning device provided by the present invention;

[0033] Figure 7 This is a partial enlarged structural diagram of the left side of an orthopedic surgical angle positioning device provided by the present invention;

[0034] Figure 8 This is a magnified schematic diagram of the right side view of an orthopedic surgical angle positioning device provided by the present invention.

[0035] Legend:

[0036] 101. Base plate; 102. Hydraulic cylinder; 103. Top plate; 104. Rotating shaft; 105. First threaded rod; 106. Moving bar; 107. Limiting rod; 108. L-shaped rod; 109. Motor; 110. Electric push rod; 111. U-shaped movable block; 112. U-shaped clamping block; 113. Rotating rod; 114. Slide groove; 115. Gear; 116. Locking block; 117. Rack; 118. Spring; 119. Connecting bar; 120. Fixing block; 121. Limiting groove; 122. Moving block; 123. Second threaded rod; 124. Fixing block; 125. Support plate; 126. Semicircular bar; 127. Third threaded rod; 128. Cotton strip. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1-8 This embodiment provides a technical solution: an orthopedic surgical angle positioning device, comprising: a base plate 101, two fixing blocks 120 fixedly connected to the top of the outer surface of the base plate 101, connecting strips 119 movably connected to the outer surfaces of the two fixing blocks 120 near their tops, limiting grooves 121 slidably connected inside the two connecting strips 119, fixing blocks 124 fixedly connected to the top of the outer surfaces of the two connecting strips 119, limiting grooves 121 formed on the outer surfaces of the two connecting strips 119 near the two fixing blocks 124, and second threaded rods 123 movably embedded in the top of the outer surfaces of the two connecting strips 119 near one side, one end of each of the two second threaded rods 123 being rotatably connected to a movable [device] via a bearing. Two movable blocks 122 are slidably connected inside the two limiting grooves 121. Two hydraulic cylinders 102 are fixedly connected to the top of the outer surface of the base plate 101. A top plate 103 is fixedly connected to the top of the outer surface of the two hydraulic cylinders 102. A support plate 125 is fixedly connected to one side of the outer surface of the top plate 103. Multiple third threaded rods 127 are rotatably connected to the top of the outer surface of the support plate 125 through bearings. The multiple third threaded rods 127 are evenly divided into three groups. Semicircular strips 126 are movably sleeved on the outer surface of the three groups of third threaded rods 127. Cotton strips 128 are fixedly connected to the bottom of the outer surface of the multiple semicircular strips 126. The multiple third threaded rods 127 are movably connected to the top of the outer surface of the support plate 125.

[0039] In use, the entire device is lifted up. Its small size and lightweight aluminum alloy construction allow medical staff to easily lift it with one hand. The connecting strip 119 is aligned with the bed frame. Rotating the second threaded rod 123 causes the moving block 122 to slide towards the fixed block 124 within the limiting groove 121. The limiting groove 121 limits the movement of the moving block 122. As the moving block 122 approaches the fixed block 124, the entire device is clamped above the bed. Two connecting strips 119 on the base plate 101 further enhance the stability of the device when fixed to the bed. The top plate 103 can raise or lower the support plate 125 connected above it. At the same time, rotating the two third threaded rods 127 causes the semicircular strip 126 to rise or fall. The patient places their arm at the bottom of the semicircular strip 126. Rotating the two third threaded rods 127 causes the semicircular strip 126 to move downward and fix it to the patient's arm. This can accommodate the size of patients' arms of different thicknesses. The cotton swab 128 is in contact with the patient's arm. The cotton swab 128 is made of soft cotton, which makes it more comfortable for the patient when the semicircular strip 126 is in contact with the patient's skin during surgery. Fixing the arm makes it easier for medical staff to perform surgery.

[0040] like Figures 1-8 As shown, in one embodiment, a first threaded rod 105 is movably embedded inside the top plate 103. One end of the first threaded rod 105 is movably embedded in the inner wall of the top plate 103, and a rotating shaft 104 is fixedly connected to one end of the first threaded rod 105. By activating the two hydraulic cylinders 102 through power, the top plate 103 can be raised or lowered. At this time, the surgical instruments inside the U-shaped clamp 112 can move up and down and rotate, and move in a horizontal semi-circular motion. During surgery, the surgical site of the patient can be treated from multiple angles.

[0041] like Figures 1-8 As shown, in one embodiment, a limiting rod 107 is fixedly connected to the top plate 103 near the inside of the first threaded rod 105. A movable strip 106 is movably sleeved on the outer surface of the first threaded rod 105. The movable strip 106 is movably sleeved on the outer surface of the limiting rod 107. Rotating the rotating shaft 104 drives the first threaded rod 105 to rotate. While rotating, the movable strip 106 slides back and forth under the limitation of the limiting rod 107. While sliding, it drives the L-shaped rod 108 to move back and forth.

[0042] like Figures 1-8As shown, in one embodiment, an L-shaped rod 108 is fixedly connected to the top of the moving bar 106 near the outer surface of the limiting rod 107. A motor 109 is fixedly connected to the inner wall of the L-shaped rod 108 near its top. A U-shaped movable block 111 is fixedly connected to the output end of the motor 109. Rotating the rotating shaft 104 drives the first threaded rod 105 to rotate. While rotating, the moving bar 106 slides back and forth under the limitation of the limiting rod 107. While sliding, the L-shaped rod 108 moves back and forth.

[0043] like Figures 1-8 As shown, in one embodiment, an electric push rod 110 is movably connected to the top of the outer surface of the U-shaped movable block 111, and a U-shaped clamping block 112 is movably connected to the outer surface of the U-shaped movable block 111. The electric push rod 110 is movably connected to the top of the outer surface of the U-shaped clamping block 112. A sliding groove 114 is provided on the inner wall of the U-shaped clamping block 112 near its top. When the electric push rod 110 is started by power, the extension and retraction of the rotating rod 113 can cause the U-shaped clamping block 112 to rotate in a horizontal semi-circular manner inside the U-shaped movable block 111, thereby driving the surgical instruments inside the U-shaped clamping block 112 to move in a horizontal semi-circular manner.

[0044] like Figures 1-8 As shown, in one embodiment, a rotating rod 113 is movably embedded on the outer surface of the U-shaped clamp 112 near its top. A gear 115 is fixedly connected to one end of the rotating rod 113. A locking block 116 is slidably connected inside the slide groove 114. The power-starting motor 109 can make the U-shaped movable block 111 rotate 360 ​​degrees, thereby causing the U-shaped clamp 112 on one side to drive the surgical instrument fixed inside it to rotate 360 ​​degrees.

[0045] like Figures 1-8 As shown, in one embodiment, a rack 117 is fixedly connected to the top of the outer surface of the locking block 116. The rack 117 is meshed with the outer surface of the gear 115. A spring 118 is fixedly connected to the outer surface of the locking block 116. When the locking block 116 moves to one side, the surgical instrument can be placed in the middle between the U-shaped clamping block 112 and the locking block 116. Then, the finger is released from the rotating rod 113. Under the action of the spring 118, the locking block 116 slides inside the slide groove 114 to the opposite side of the spring 118. When sliding, the locking block 116 clamps and fixes the surgical instrument.

[0046] like Figures 1-8As shown, in one embodiment, one end of the spring 118 is fixedly connected to the outer surface of the U-shaped clamp 112, and the locking block 116 is movably connected to the outer surface of the U-shaped clamp 112. Rotating the rotating rod 113 causes the locking block 116, connected by the rack 117, to move toward the spring 118. The locking block 116 slides inside the slide groove 114, limiting its movement. At the same time, when the locking block 116 moves to one side, the surgical instrument can be placed in the middle between the U-shaped clamp 112 and the locking block 116. Then, the finger is released from the rotating rod 113, and under the action of the spring 118, the locking block 116 slides inside the slide groove 114 toward the opposite side of the spring 118. When sliding, the locking block 116 clamps and fixes the surgical instrument.

[0047] Working principle: In use, rotating the shaft 104 drives the first threaded rod 105 to rotate. Simultaneously, the rotating rod 106 slides back and forth under the limitation of the limiting rod 107. This sliding motion drives the L-shaped rod 108 to move back and forth. Rotating the rotating rod 113 causes the locking block 116, connected via the rack 117, to move towards the spring 118. The locking block 116 slides inside the groove 114, limiting its movement. Simultaneously, when the locking block 116 moves to one side, the surgical instrument can be placed between the U-shaped clamp 112 and the locking block 116. Then, releasing the rotating rod 113 causes the locking block 116 to slide inside the groove 114 towards the opposite side of the spring 118 under the action of the spring 118. During this sliding motion, the locking block 116 controls the surgical instrument. With the clamps in place, the electric push rod 110 is activated by the power supply. The extension and retraction of the rotating rod 113 allows the U-shaped clamp 112 to rotate laterally in a semi-circular manner inside the U-shaped movable block 111. This causes the surgical instruments inside the U-shaped clamp 112 to move laterally in a semi-circular manner. The motor 109 is activated by the power supply, causing the U-shaped movable block 111 to rotate 360 ​​degrees. This causes one side of the U-shaped clamp 112 to rotate the surgical instruments fixed inside it 360 degrees. The two hydraulic cylinders 102 are activated by the power supply, causing the top plate 103 to rise or fall. This allows the surgical instruments inside the U-shaped clamp 112 to move up and down and rotate laterally in a semi-circular manner. During surgery, multi-angle treatment of the patient's surgical site can be performed. The entire device is small in size and lightweight due to its aluminum alloy material, allowing medical staff to lift it with one hand. Align the connecting strip 119 with the base frame of the hospital bed, and rotate the second threaded rod 123 to allow the moving block 122 to slide towards the fixed block 124 within the limiting groove 121. The limiting groove 121 limits the movement of the moving block 122 during sliding. When the moving block 122 approaches the fixed block 124, the entire device can be clamped above the hospital bed. Two connecting strips 119 on the base plate 101 further enhance the stability of the device when fixed to the hospital bed. The top plate... 103 can raise or lower the support plate 125 connected above it, while rotating the two third threaded rods 127 causes the semicircular strip 126 to rise or fall. The patient places their arm at the bottom of the semicircular strip 126, and rotating the two third threaded rods 127 causes the semicircular strip 126 to move downward and fix it to the patient's arm. It can adapt to the size of patients' arms of different thicknesses. The cotton swab 128 is in contact with the patient's arm. The cotton swab 128 is made of soft cotton, which makes it more comfortable for the patient when the semicircular strip 126 is in contact with the patient's skin during surgery. Fixing the arm makes it easier for medical staff to perform surgery.

[0048] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. An orthopedic surgical angle positioning device, characterized in that, include: A base plate (101) has two fixed blocks (120) fixedly connected to the top of its outer surface. Connecting strips (119) are movably connected to the outer surfaces of the two fixed blocks (120) near their tops. Fixed blocks (124) are fixedly connected to the top of the outer surfaces of the two connecting strips (119). Limit grooves (121) are formed on the outer surfaces of the two connecting strips (119) near the two fixed blocks (124). Second threaded rods (123) are movably embedded on the top of the outer surfaces of the two connecting strips (119) away from the fixed blocks (124). One end of each of the two second threaded rods (123) is rotatably connected to a movable block (122) via a bearing. The two movable blocks (122) are slidably connected to the two limit grooves. Inside the slot (121), two hydraulic cylinders (102) are fixedly connected to the top of the outer surface of the base plate (101). A top plate (103) is fixedly connected to the top of the outer surface of the two hydraulic cylinders (102). A support plate (125) is fixedly connected to one side of the outer surface of the top plate (103). A plurality of third threaded rods (127) are rotatably connected to the top of the outer surface of the support plate (125) through bearings. The plurality of third threaded rods (127) are divided into three groups. Semicircular strips (126) are movably sleeved on the outer surface of the three groups of third threaded rods (127). Cotton strips (128) are fixedly connected to the bottom of the outer surface of the plurality of semicircular strips (126). The plurality of third threaded rods (127) are movably connected to the top of the outer surface of the support plate (125). The top plate (103) is movably fitted with a first threaded rod (105), one end of which is movably fitted into the inner wall of the top plate (103), and one end of which is fixedly connected to a rotating shaft (104). The top plate (103) is fixedly connected to the inner part of the first threaded rod (105) with a limiting rod (107). The outer surface of the first threaded rod (105) is movably sleeved with a moving strip (106), which is movably sleeved on the outer surface of the limiting rod (107). The top of the moving bar (106) near the outer surface of the limiting rod (107) is fixedly connected to an L-shaped rod (108), and the inner wall of the L-shaped rod (108) near its top is fixedly connected to a motor (109), and the output end of the motor (109) is fixedly connected to a U-shaped movable block (111). An electric push rod (110) is movably connected to the top of the outer surface of the U-shaped movable block (111), and a U-shaped clamping block (112) is movably connected to the outer surface of the U-shaped movable block (111). The electric push rod (110) is movably connected to the top of the outer surface of the U-shaped clamping block (112), and a sliding groove (114) is provided on the inner wall of the U-shaped clamping block (112) near its top. The U-shaped clamp (112) has a rotating rod (113) movably embedded on its outer surface near its top. One end of the rotating rod (113) is fixedly connected to a gear (115), and a locking block (116) is slidably connected inside the slide groove (114). A rack (117) is fixedly connected to the top of the outer surface of the block (116), the rack (117) is meshed with the outer surface of the gear (115), and a spring (118) is fixedly connected to the outer surface of the block (116). One end of the spring (118) is fixedly connected to the outer surface of the U-shaped clamp (112), and the locking block (116) is movably connected to the outer surface of the U-shaped clamp (112).

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