Ankle joint intraoperative perspective precise angle control body position fixing device

Abstract

The utility model relates to a kind of precise angle control body position fixing device of intraoperative ankle fluoroscopy, it is related to medical instrument technical field, including support panel, the opposite end of support panel is equipped with installation slot, two installation slots are equipped with operation side body position fixing assembly and healthy side body position fixing assembly respectively;Healthy side body position fixing assembly includes the fixed U-shaped frame of detachable connection with support panel, mobile U-shaped plate and sliding U-shaped plate are horizontally slidably arranged in fixed U-shaped frame, lifting frame is vertically arranged in mobile U-shaped plate, adaptive plate is rotatably arranged on the top of lifting frame at both sides, sliding U-shaped plate top rotatably arranged with follow-up plate;When lifting frame moves upward, healthy side knee joint flexion, adaptive plate and follow-up plate downward rotate, mobile U-shaped plate and sliding U-shaped plate slide to the direction of hip portion.The utility model solves the problem that standard body position is difficult to obtain and maintain when existing intraoperative ankle fluoroscopy.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a device for precise fluoroscopic angle control and body positioning during ankle joint surgery. Background Technology

[0002] The ankle joint is an important weight-bearing joint of the lower limb, formed by the distal ends of the tibia and fibula and the talus. Its complex structure and frequent movement make it susceptible to injury due to trauma or degeneration. In modern orthopedic treatment, ankle surgery has become a common approach to addressing such problems, including fracture reduction and internal fixation, minimally invasive surgery, and deformity correction. In these procedures, intraoperative fluoroscopy using a C-arm X-ray machine is a very common and necessary operation. This mobile and rotating X-ray machine can acquire clear images of the bones, joints, and implants during surgery. During the operation, the patient lies supine on the operating table, and the surgeon uses the C-arm X-ray machine to obtain anteroposterior, lateral, and mortise views of the ankle joint to accurately assess the quality of reduction, the position of implants, and joint alignment, thereby effectively guiding the surgical procedure and ensuring the final outcome.

[0003] The existing C-arm X-ray machine for intraoperative fluoroscopy has the following shortcomings:

[0004] Achieving and maintaining the standard patient position is difficult. Specifically, the standard imaging position requires the patient's feet to be separated (the horizontal and vertical projections of the feet are separated by a certain distance), with the sole of the foot on the side being examined perpendicular to the operating table and the toes pointing upwards. In this position, anteroposterior and lateral images of the ankle joint on the surgical side are obtained. Then, the foot on the surgical side is internally rotated 20° to obtain images of the ankle mortise. However, during the procedure, because the patient is under anesthesia and cannot actively control the position of their limbs, medical staff need to continuously stabilize the non-surgical lower limb to avoid interference with the imaging and surgical procedures on the surgical side. Simultaneously, the surgical ankle joint also requires medical staff assistance to adjust the angle and maintain the position to ensure image quality. Therefore, achieving and maintaining the standard position is difficult, increasing the complexity of the intraoperative procedure.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the present invention aims to provide a precise fluoroscopic angle control and positioning device for ankle joint surgery. This device enables the patient's foot on the operated side to maintain a standard separation from the non-operated side, and allows for precise adjustment and maintenance of the imaging angle of the operated foot in a standard position, thereby facilitating imaging of the operated ankle joint and effectively reducing the difficulty of intraoperative procedures.

[0007] To address the above problems, the present invention provides the following technical solution:

[0008] An intraoperative fluoroscopic precise angle control and positioning fixation device for ankle joint surgery includes a support panel, with mounting grooves at opposite ends of the support panel, and a surgical side positioning fixation component and a healthy side positioning fixation component respectively disposed in the two mounting grooves.

[0009] The healthy side positioning fixation component includes a fixed U-shaped frame that is detachably connected to the support panel. The fixed U-shaped frame has a horizontally sliding movable U-shaped plate and a sliding U-shaped plate inside. The movable U-shaped plate has a vertically lifting frame inside. The top of the lifting frame is rotatably provided on both sides. The top of the sliding U-shaped plate is rotatably provided with a follower plate.

[0010] When the lifting frame moves upward, the healthy knee joint flexes, the adaptive plate and the follower plate rotate downward, and the moving U-shaped plate and the sliding U-shaped plate slide towards the hip.

[0011] As an optimized solution, the surgical side positioning fixation component includes two fixed L-shaped plates that are detachably connected to the support panel. A rotating U-shaped frame is rotatably provided between the two fixed L-shaped plates. The rotating U-shaped frame has a fixed frame and a sliding frame inside. Fixed plates are fixed on both sides of the top of the sliding frame. A foot adjustment plate is rotatably provided on the top of the fixed frame.

[0012] As an optimized solution, the top of both the adaptive plate and the fixed plate is provided with a leg receiving groove, and the top of both the follower plate and the foot adjustment plate is provided with a foot receiving groove.

[0013] As an optimized solution, the bottom of the adaptive plate is fixedly provided with several first arc-shaped rods, one end of which passes through the lifting frame and is slidably connected to it. The bottom of the follower plate is fixedly provided with a second arc-shaped rod, one end of which passes through the sliding U-shaped plate and is slidably connected to it. The outer walls of the first and second arc-shaped rods are both fitted with arc-shaped compression springs, and the bottom ends of the first and second arc-shaped rods are both fixed with stop balls.

[0014] As an optimized solution, each of the opposite ends of the rotating U-shaped frame is fixed with a connecting shaft, which is rotatably connected to the fixed L-shaped plate. One end of the connecting shaft passes through the fixed L-shaped plate and is fixed with a handwheel. A fixing block is fixed on the outer wall of the connecting shaft. Two stop blocks are fixed on the end of the fixed L-shaped plate. A plug rod is slidably inserted through the end of the handwheel. Several slots are provided on the end of the fixed L-shaped plate.

[0015] As an optimized solution, the support panel is provided with two clearance grooves at its end.

[0016] As an optimized solution, a lifting telescopic cylinder is fixedly provided at the bottom of the movable U-shaped plate, and the telescopic end of the lifting telescopic cylinder passes through the movable U-shaped plate and is fixedly connected to the lifting frame.

[0017] As an optimized solution, a drive telescopic cylinder is hinged to the top of the fixed frame, and the telescopic end of the drive telescopic cylinder is hinged to the foot adjustment plate.

[0018] As an optimized solution, the inner wall of the fixed U-shaped frame is fixedly provided with two sliding rods, the inner wall of the rotating U-shaped frame is fixedly provided with two guide rods, the movable U-shaped plate and the sliding U-shaped plate are both slidably connected to the sliding rods, and the sliding frame is slidably connected to the guide rods.

[0019] As an optimized solution, handles are fixedly provided at the opposite ends of the movable U-shaped plate, the sliding U-shaped plate, and the sliding frame.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The entire device is placed on the operating table. The patient's foot on the operating side and the foot on the unaffected side are placed in the foot receiving slots of the foot adjustment plate and the follower plate, respectively. Medical staff manually adjust the position of the moving U-shaped plate and the sliding frame so that the legs on both sides of the unaffected knee joint are respectively located in the leg receiving slots of the two adaptive plates, and the legs on both sides of the operating knee joint are respectively located in the leg receiving slots of the two fixed plates. During intraoperative fluoroscopy, the lifting frame is moved upward and the unaffected knee joint is flexed. At the same time, the adaptive plates rotate downward as the legs on both sides of the unaffected knee joint bend, and the follower plate rotates downward as the unaffected foot moves. Because the two adaptive plates are restricted to the unaffected knee joint, and the unaffected foot is located in the foot receiving slot of the follower plate, when the unaffected knee joint is flexed, the moving U-shaped plate and the sliding U-shaped plate slide towards the buttocks. The above process can be understood as the knee flexion process of a normal leg when lying flat. Through the above operation... The patient's healthy foot and the operated foot are separated. The telescopic cylinder is driven to rotate the foot adjustment plate until the operated foot is at 90° with the support panel. At this point, the operated foot is in the first standard position. The X-ray machine accurately captures the anteroposterior and lateral views of the patient's operated ankle joint. Then, the insert rod is pulled out to release the handwheel restriction. The medical staff rotates the handwheel to internally rotate the patient's operated leg and foot until the fixing block and the stop block abut. At this point, the operated leg and foot are internally rotated 20°. The insert rod is inserted back into the slot to limit the handwheel. At this point, the operated foot is in the second standard position. The X-ray machine accurately captures the ankle acupoints of the patient's operated ankle joint. This positioning device can keep the patient's operated and unoperated feet in a standard separation state. The imaging angle of the operated foot can be accurately adjusted and maintained in a standard position, which facilitates the imaging of the operated ankle joint and effectively reduces the difficulty of the operation during surgery.

[0022] 2. The position of the surgical side varies among different patients. When the position of the surgical side changes, the U-shaped fixation frame and L-shaped fixation plate will be disassembled and their positions swapped. At this time, the positions of the corresponding components on the surgical side and the healthy side will be interchanged. The change process is as follows: Figure 8 As shown, the sliding U-shaped plate and sliding frame can be adapted to patients with different leg lengths, which improves the applicability of the device. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the healthy side positioning fixation component of the present invention;

[0026] Figure 3 This is a schematic diagram of the surgical side positioning fixation component of the present invention;

[0027] Figure 4 This is a schematic diagram of the leg receiving groove and foot receiving groove of the present invention;

[0028] Figure 5 This is a schematic diagram of the resetting method of the adaptive board and the follower board of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure for fixing the end of the L-shaped plate according to the present invention;

[0030] Figure 7 This is a schematic diagram of the connection between the adaptive plate and the lifting frame of the present invention;

[0031] Figure 8 This is a schematic diagram illustrating the positional interchange of the surgical and healthy components of the present invention.

[0032] In the diagram: 1-Support panel; 2-Unaffected side positioning fixation component; 3-Mounting slot; 4-Avoidance slot; 5-Operated side positioning fixation component; 6-Fixed U-shaped frame; 7-Lifting frame; 8-Leg receiving slot; 9-Adaptive plate; 10-Foot receiving slot; 11-Follow-up plate; 12-Sliding U-shaped plate; 13-Slide rod; 14-Moving U-shaped plate; 15-Handle; 16-Connecting rod; 17-First arc-shaped rod; 18-Second arc-shaped rod; 19-Arch-shaped compression spring; 20-Stop ball; 21-Lifting telescopic cylinder; 22-Fixed L-shaped plate; 23-Fixed plate; 24-Sliding frame; 25-Foot adjustment plate; 26-Drive telescopic cylinder; 27-Connecting shaft; 28-Handwheel; 29-Insertion rod; 30-Fixed frame; 31-Guide rod; 32-Rotating U-shaped frame; 33-Slot; 34-Stop block; 35-Fixed block. Detailed Implementation

[0033] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0034] like Figures 1 to 8 As shown, an intraoperative fluoroscopic precise angle control and body position fixation device for ankle joint surgery includes a support panel 1. Each end of the support panel 1 is provided with a mounting groove 3. The two mounting grooves 3 are respectively provided with a surgical side body position fixation component 5 and a healthy side body position fixation component 2.

[0035] The healthy side position fixation component 2 includes a fixed U-shaped frame 6 that is detachably connected to the support panel 1. The fixed U-shaped frame 6 has a movable U-shaped plate 14 and a sliding U-shaped plate 12 that are horizontally slidably provided inside. The movable U-shaped plate 14 has a lifting frame 7 that is vertically lifted and lowered inside. The top of the lifting frame 7 is rotatably provided with adaptive plates 9 on both sides. The top of the sliding U-shaped plate 12 is rotatably provided with a follower plate 11.

[0036] When the lifting frame 7 moves upward, the healthy knee joint flexes, the adaptive plate 9 and the follower plate 11 rotate downward, and the moving U-shaped plate 14 and the sliding U-shaped plate 12 slide towards the hip.

[0037] The surgical side positioning fixation component 5 includes two fixed L-shaped plates 22 that are detachably connected to the support panel 1. A rotating U-shaped frame 32 is rotatably provided between the two fixed L-shaped plates 22. The rotating U-shaped frame 32 has a fixed frame 30 and a sliding frame 24 inside. Fixed plates 23 are fixedly provided on both sides of the top of the sliding frame 24. A foot adjustment plate 25 is rotatably provided on the top of the fixed frame 30.

[0038] The top of the adaptive plate 9 and the fixed plate 23 are both provided with leg receiving grooves 8, and the top of the follower plate 11 and the foot adjustment plate 25 are both provided with foot receiving grooves 10.

[0039] Several first arc-shaped rods 17 are fixedly provided at the bottom of the adaptive plate 9. One end of the first arc-shaped rod 17 passes through the lifting frame 7 and is slidably connected to it. A second arc-shaped rod 18 is fixedly provided at the bottom of the follower plate 11. One end of the second arc-shaped rod 18 passes through the sliding U-shaped plate 12 and is slidably connected to it. Arc-shaped compression springs 19 are sleeved on the outer walls of the first arc-shaped rod 17 and the second arc-shaped rod 18. A stop ball 20 is fixedly connected to the bottom end of the first arc-shaped rod 17 and the second arc-shaped rod 18.

[0040] The opposite ends of the rotating U-shaped frame 32 are fixed with connecting shafts 27. The connecting shafts 27 are rotatably connected to the fixed L-shaped plate 22. One end of the connecting shaft 27 passes through the fixed L-shaped plate 22 and is fixed with a handwheel 28. A fixing block 35 is fixed on the outer wall of the connecting shaft 27. Two stop blocks 34 are fixed on the end of the fixed L-shaped plate 22. A plug rod 29 is slidably inserted through the end of the handwheel 28. Several slots 33 are provided on the end of the fixed L-shaped plate 22.

[0041] The support panel 1 has two clearance grooves 4 at its end.

[0042] The two adaptive plates 9 are rotatably connected to the lifting frame 7 via connecting rods 16.

[0043] A lifting telescopic cylinder 21 is fixedly installed at the bottom of the movable U-shaped plate 14. The telescopic end of the lifting telescopic cylinder 21 passes through the movable U-shaped plate 14 and is fixedly connected to the lifting frame 7.

[0044] A drive telescopic cylinder 26 is hinged to the top of the fixed frame 30, and the telescopic end of the drive telescopic cylinder 26 is hinged to the foot adjustment plate 25.

[0045] Two slide rods 13 are fixedly provided on the inner wall of the fixed U-shaped frame 6, and two guide rods 31 are fixedly provided on the inner wall of the rotating U-shaped frame 32. The movable U-shaped plate 14 and the sliding U-shaped plate 12 are both slidably connected to the slide rods 13, and the sliding frame 24 is slidably connected to the guide rods 31.

[0046] Handles 15 are fixedly provided at the opposite ends of the movable U-shaped plate 14, the sliding U-shaped plate 12 and the sliding frame 24.

[0047] The working principle of this device is as follows:

[0048] The entire device is placed on the operating table. The patient sits on the support panel 1, with the foot on the operated side and the foot on the unaffected side positioned in the foot adjustment plate 25 and the foot receiving groove 10 of the follower plate 11, respectively. The patient then lies flat on the support panel 1. Medical staff manually adjust the positions of the movable U-shaped plate 14 and the sliding frame 24 so that the legs on both sides of the unaffected knee are respectively positioned in the leg receiving grooves 8 of the two adaptive plates 9, and the legs on both sides of the operated knee are respectively positioned in the leg receiving grooves 8 of the two fixed plates 23. During intraoperative fluoroscopy, the lifting frame 7 is moved upwards, flexing the unaffected knee. Simultaneously, the adaptive plates 9 rotate downwards as the legs on both sides of the unaffected knee bend, and the follower plate 11 rotates downwards with the unaffected foot. Because the two adaptive plates 9 are confined to the unaffected knee, and the unaffected foot is located in the foot receiving groove 10 of the follower plate 11, when the unaffected knee is flexed, the movable U-shaped plate 14 and the sliding U-shaped plate 12 slide towards the buttocks. This process can be understood as normal movement when lying flat. During the knee flexion process, the patient's healthy foot and the operated foot are separated through the above operation. The telescopic cylinder 26 drives the foot adjustment plate 25 to rotate until the operated foot is at 90° with the support panel 1. At this time, the operated foot is in the first standard position. The X-ray machine accurately takes pictures of the patient's operated ankle joint in the anteroposterior and lateral positions. Then, the insertion rod 29 is pulled out to release the restriction of the handwheel 28. The medical staff rotates the handwheel 28 to internally rotate the patient's operated leg and foot until the fixing block 35 abuts against the stop block 34. At this time, the operated leg and foot are internally rotated by 20°. The insertion rod 29 is inserted into the slot 33 again to limit the handwheel 28. At this time, the operated foot is in the second standard position. The X-ray machine accurately takes pictures of the patient's ankle joint and ankle acupoints. This positioning fixation device can keep the patient's operated and non-operated feet in a standard separation state. The imaging angle of the operated foot can be accurately adjusted and maintained in a standard position, which facilitates the imaging of the operated ankle joint and effectively reduces the difficulty of the operation during surgery.

[0049] The position of the surgical side varies among different patients. When the position of the surgical side changes, the U-shaped fixation frame 6 and the L-shaped fixation plate 22 are disassembled and their positions are swapped. At this time, the positions of the corresponding components on the surgical side and the healthy side are swapped. The change process is as follows: Figure 8 As shown, the sliding U-shaped plate 14 and sliding frame 24 can be adapted to patients with different leg lengths, and the above configuration improves the applicability of the device;

[0050] The device can be used directly on the operating table without sterilization.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A device for precise fluoroscopic angle control and position fixation during ankle joint surgery, characterized in that: Includes a support panel (1), and each of the opposite ends of the support panel (1) is provided with a mounting groove (3). The two mounting grooves (3) are respectively provided with a surgical side positioning fixation component (5) and a healthy side positioning fixation component (2). The healthy side positioning fixation component (2) includes a fixed U-shaped frame (6) that is detachably connected to the support panel (1). The fixed U-shaped frame (6) has a horizontally sliding movable U-shaped plate (14) and a sliding U-shaped plate (12) inside. The movable U-shaped plate (14) has a vertically lifting frame (7) inside. The top of the lifting frame (7) is rotatably provided with adaptive plates (9) on both sides. The top of the sliding U-shaped plate (12) is rotatably provided with a follower plate (11). When the lifting frame (7) moves upward, the healthy knee joint flexes, the adaptive plate (9) and the follower plate (11) rotate downward, and the moving U-shaped plate (14) and the sliding U-shaped plate (12) slide towards the buttocks; The surgical side positioning fixation component (5) includes two fixed L-shaped plates (22) that are detachably connected to the support panel (1). A rotating U-shaped frame (32) is rotatably provided between the two fixed L-shaped plates (22). The rotating U-shaped frame (32) is provided with a fixed frame (30) and a sliding frame (24) inside. Fixed plates (23) are fixedly provided on both sides of the top of the sliding frame (24). A foot adjustment plate (25) is rotatably provided on the top of the fixed frame (30). The adaptive plate (9) is fixedly provided with a plurality of first arc rods (17) at the bottom. One end of the first arc rod (17) passes through the lifting frame (7) and is slidably connected to it. The follower plate (11) is fixedly provided with a second arc rod (18) at the bottom. One end of the second arc rod (18) passes through the sliding U-shaped plate (12) and is slidably connected to it. The outer walls of the first arc rod (17) and the second arc rod (18) are both fitted with arc compression springs (19). The bottom ends of the first arc rod (17) and the second arc rod (18) are both fixed with stop balls (20). The bottom of the movable U-shaped plate (14) is fixedly provided with a lifting telescopic cylinder (21), and the telescopic end of the lifting telescopic cylinder (21) passes through the movable U-shaped plate (14) and is fixedly connected to the lifting frame (7); The top of the fixed frame (30) is hinged with a drive telescopic cylinder (26), and the telescopic end of the drive telescopic cylinder (26) is hinged to the foot adjustment plate (25).

2. The ankle joint surgery fluoroscopic precision angle control and body positioning fixation device according to claim 1, characterized in that: The top of the adaptive plate (9) and the fixed plate (23) are provided with leg receiving grooves (8), and the top of the follower plate (11) and the foot adjustment plate (25) are provided with foot receiving grooves (10).

3. The ankle joint surgery fluoroscopic precision angle control and body positioning fixation device according to claim 1, characterized in that: The opposite ends of the rotating U-shaped frame (32) are all fixed with connecting shafts (27). The connecting shafts (27) are rotatably connected to the fixed L-shaped plate (22). One end of the connecting shaft (27) passes through the fixed L-shaped plate (22) and is fixed with a handwheel (28). A fixing block (35) is fixed on the outer wall of the connecting shaft (27). Two stop blocks (34) are fixed on the end of the fixed L-shaped plate (22). A plug rod (29) is slidably passed through the end of the handwheel (28). Several slots (33) are provided on the end of the fixed L-shaped plate (22).

4. The ankle joint surgery fluoroscopic precision angle control and positioning fixation device according to claim 3, characterized in that: The support panel (1) has two clearance grooves (4) at its end.

5. The ankle joint surgery fluoroscopic precision angle control and positioning fixation device according to claim 1, characterized in that: The inner wall of the fixed U-shaped frame (6) is fixed with two sliding rods (13), the inner wall of the rotating U-shaped frame (32) is fixed with two guide rods (31), the movable U-shaped plate (14) and the sliding U-shaped plate (12) are both slidably connected to the sliding rods (13), and the sliding frame (24) is slidably connected to the guide rods (31).

6. The ankle joint surgery fluoroscopic precision angle control and body positioning fixation device according to claim 1, characterized in that: Handles (15) are fixedly provided at the opposite ends of the movable U-shaped plate (14), the sliding U-shaped plate (12) and the sliding frame (24).

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