A fixation device for improving the accuracy of patellar axial X-ray film

Abstract

The utility model belongs to the technical field of fixing devices, and provides a fixing device for improving the accuracy of axial X-ray films of the patella, including a support plate and a bottom plate, wherein the support plate is fixedly connected with a first slide groove, the second slide plate is rotatably connected with a driving shaft, one end of the driving shaft is fixedly connected with a driving handle, and the end of the driving shaft away from the driving handle is fixedly connected with a threaded rod. In the utility model, the patient's lower limbs are fixed by a rubber semicircular ferrule and a pull rope to ensure that the knee joint is in a stable state, and then the angle and height of the connecting rod are driven by the adjusting rod, and the connecting rod drives the patella on the rubber semicircular ferrule to be in the best shooting position. Therefore, by such a fixing device, the shaking of the patient is avoided, so that the accuracy and standardization of the axial X-ray film of the patella can be improved, which is helpful to evaluate the positional relationship between the patient's patella and the condyle.

Description

Technical Field

[0001] The utility model relates to the technical field of fixing devices, and in particular to a fixing device for improving the accuracy of patellar axial X-ray films. Background Art

[0002] Patellar axial X-rays are clinically significant for evaluating the position between the patella and femoral condyle, patellar cartilage wear, and for evaluating the patellar trajectory after knee replacement surgery. However, there has always been a problem of poor patellar position photography in clinical practice. How to ensure that standard patellar axial films can be taken to provide data support for clinical diagnosis and treatment and scientific research has practical application value in clinical research. Observations have found that the main reasons for poor patellar axial display are deviation in the angle of the X-ray tube, changes in the patient's knee flexion angle during photography, abnormal patellar position, etc. Therefore, a fixation device is needed to improve the accuracy of patellar axial X-rays. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and proposes a fixing device for improving the accuracy of patellar axial X-ray films.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fixing device for improving the accuracy of patellar axial X-ray films, comprising a supporting plate and a base plate, the supporting plate is fixedly connected with a first slide groove, the second slide plate is rotatably connected with a driving shaft, one end of the driving shaft is fixedly connected with a driving handle, the end of the driving shaft away from the driving handle is fixedly connected with a threaded rod, the threaded rod is threadedly connected with a threaded block, the threaded block is slidably connected in the first slide groove, an adjusting connecting rod is hinged on the threaded block, the adjusting rod is hinged on the supporting plate, the end of the adjusting connecting rod away from the threaded block is hinged on the adjusting rod, the adjusting rod is fixedly connected with a connecting rod, both ends of the connecting rod are fixedly connected with mounting rods, the mounting rod is fixedly connected with a rubber semicircular ring, and the rubber semicircular ring is fixedly connected with a pull rope.

[0005] As a further description of the above technical solution:

[0006] The bottom plate is provided with a second slide groove, the second slide groove is slidably connected to the first slide plate, an active connecting rod is hinged on the first slide plate, the end of the active connecting rod away from the first slide plate is hinged on the second slide plate, a third slide groove is provided on the support plate, the second slide plate is slidably connected to the third slide groove, a driven connecting rod is hinged on the active connecting rod, both ends of the driven connecting rod are hinged to the support plate and the bottom plate, a cross bar is fixedly connected to the active connecting rod, a hydraulic rod is hinged on the bottom plate, a push rod is fixedly connected to the output end of the hydraulic rod, and the push rod is hinged on the cross bar at one end away from the hydraulic rod.

[0007] As a further description of the above technical solution:

[0008] A supporting leg is fixedly connected to the supporting plate, and a pad is fixedly connected to one end of the supporting leg away from the supporting plate.

[0009] As a further description of the above technical solution:

[0010] The draw cords are provided in a plurality of groups, and the draw cords in the plurality of groups are evenly distributed on the rubber semicircular ferrule.

[0011] As a further description of the above technical solution:

[0012] The support legs are provided in four groups, and the four groups of support legs are evenly distributed on the support plate and the pad.

[0013] As a further description of the above technical solution:

[0014] The active connecting rod and the driven connecting rod are provided with two groups, and the two groups of active connecting rods and the driven connecting rods are evenly distributed on the support plate and the bottom plate.

[0015] As a further description of the above technical solution:

[0016] The active connecting rod and the driven connecting rod cross each other to form an X shape.

[0017] The utility model has the following beneficial effects:

[0018] 1. In the utility model, the patient's lower limbs are fixed by a rubber semicircular ring and a pull rope to ensure that the knee joint is in a stable state, and then the adjusting rod drives the connecting rod to move the angle and height, and the connecting rod drives the patella on the rubber semicircular ring to be in the best shooting position. Therefore, through such a fixing device, the patient's shaking is avoided, thereby improving the accuracy and standardization of the axial X-ray of the patella, which is helpful to evaluate the positional relationship between the patient's patella and condyle.

[0019] 2. In the utility model, the rotation of the active connecting rod and the driven connecting rod drives the rubber semicircular ring on the support plate to rise and fall, so that the height of the fixing device can be adjusted according to the patient's comfort level to ensure the patient's comfort during medical treatment, thereby improving the practicality of the fixing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A structural diagram of a fixing device for improving the accuracy of patellar axial X-ray films proposed by the utility model Figure 1 ;

[0021] Figure 2A structural diagram of a fixing device for improving the accuracy of patellar axial X-ray films proposed by the utility model Figure 2 ;

[0022] Figure 3 A structural diagram of a fixing device for improving the accuracy of patellar axial X-ray films proposed by the utility model Figure 3 ;

[0023] Figure 4 A structural diagram of a fixing device for improving the accuracy of patellar axial X-ray films proposed by the utility model Figure 4 .

[0024] Legend:

[0025] 1. Support plate; 2. First slide groove; 3. Driving shaft; 4. Driving handle; 5. Threaded rod; 6. Threaded block; 7. Adjusting connecting rod; 8. Adjusting rod; 9. Connecting rod; 10. Mounting rod; 11. Rubber semicircular ring; 12. Pull rope; 13. Bottom plate; 14. Active connecting rod; 15. Second slide groove; 16. First slide plate; 17. Cross bar; 18. Hydraulic rod; 19. Push rod; 20. Driven connecting rod; 21. Third slide groove; 22. Second slide plate; 23. Support leg; 24. Pad. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Reference Figure 1-Figure 4The utility model provides an embodiment: a fixing device for improving the accuracy of patellar axial X-ray film, including a support plate 1 and a bottom plate 13, the support plate 1 is fixedly connected with a first slide groove 2, the second slide plate 22 is rotatably connected with a driving shaft 3, one end of the driving shaft 3 is fixedly connected with a driving handle 4, the end of the driving shaft 3 away from the driving handle 4 is fixedly connected with a threaded rod 5, the threaded rod 5 is threadedly connected with a threaded block 6, the threaded block 6 is slidably connected in the first slide groove 2, the threaded block 6 is hinged with an adjusting connecting rod 7, the support plate 1 is hinged with an adjusting rod 8, and the adjusting connecting rod 8 is hinged on the support plate 1. One end of the rod 7 away from the threaded block 6 is hinged on the adjusting rod 8, the adjusting rod 8 is fixedly connected with a connecting rod 9, both ends of the connecting rod 9 are fixedly connected with mounting rods 10, the mounting rod 10 is fixedly connected with a rubber semicircular ring 11, and the rubber semicircular ring 11 is fixedly connected with a pull rope 12. The rubber semicircular ring 11 and the pull rope 12 can fix the patient's lower limbs to ensure that the knee joint is in a stable state. The adjusting rod 8 drives the connecting rod 9 to adjust the angle and height, and the connecting rod 9 drives the patella on the rubber semicircular ring 11 to be in the best shooting position, thereby improving the accuracy of the axial X-ray of the patella.

[0028] A second slide 15 is provided on the bottom plate 13, and a first slide 16 is slidably connected to the second slide 15. An active link 14 is hinged on the first slide 16, and one end of the active link 14 away from the first slide 16 is hinged on the second slide 22. A third slide 21 is provided on the support plate 1, and the second slide 22 is slidably connected to the third slide 21. A driven link 20 is hinged on the active link 14, and both ends of the driven link 20 are hinged on the support plate 1 and the bottom plate 13. A cross bar 17 is fixedly connected to the active link 14, and a hydraulic rod 18 is hinged on the bottom plate 13. A push rod 19 is fixedly connected to the output end of the hydraulic rod 18, and one end of the push rod 19 away from the hydraulic rod 18 is hinged on the cross bar 17. The rotation of the active link 14 and the driven link 20 drives the support plate 1 to rotate. The rubber semicircular ring 11 on the support plate 1 is raised and lowered, so that the height of the fixing device can be adjusted according to the patient's comfort level to ensure the patient's comfort during medical treatment, thereby improving the practicality of the fixing device. A supporting leg 23 is fixedly connected to the supporting plate 1, and a pad 24 is fixedly connected to the end of the supporting leg 23 away from the supporting plate 1. There are several groups of pull ropes 12, and several groups of pull ropes 12 are evenly distributed on the rubber semicircular ring 11. There are four groups of supporting legs 23, and the four groups of supporting legs 23 are evenly distributed on the supporting plate 1 and the pad 24. There are two groups of active connecting rods 14 and driven connecting rods 20, and the two groups of active connecting rods 14 and driven connecting rods 20 are evenly distributed on the supporting plate 1 and the bottom plate 13. The active connecting rod 14 and the driven connecting rod 20 are crossed with each other in an X shape.

[0029] Working principle: first, the patient lies on the examination bed with his abdomen against the pad 24, and then the calf is placed on the rubber semicircular ring 11 and the rubber semicircular ring 11 is fixed to the patient's calf with a pull rope 12, and then the driving handle 4 can be turned by hand, and the rotation of the driving handle 4 drives the driving shaft 3 to rotate, and the rotation of the driving shaft 3 drives the threaded rod 5 to rotate, and the rotation of the threaded rod 5 drives the threaded block 6 to rotate, and the rotation of the threaded block 6 drives the adjusting connecting rod 7 to rotate, and the rotation of the adjusting connecting rod 7 drives the adjusting rod 8 to rotate, and the rotation of the adjusting rod 8 drives the connecting rod 9 to adjust the angle, and the connecting rod 9 drives the rubber semicircular ring 11 on the mounting rod 10 to adjust the angle. The rubber semicircular collar 11 drives the patient's calf to adjust the angle, so that the knee joint can be ensured to be in a stable state and the patella on the rubber semicircular collar 11 is in the best shooting position. Therefore, through such a fixing device, the patient's shaking is avoided, thereby improving the accuracy of the axial X-ray of the patella. Then the height of the fixing device can be adjusted according to the patient's comfort. First, by starting the hydraulic rod 18, the hydraulic rod 18 drives the push rod 19 to extend and retract, and the extension and retraction of the push rod 19 drives the active connecting rod 14 on the cross bar 17 to rotate. The rotation of the active connecting rod 14 drives the first slide 16 to slide on the second slide groove 15, and the second slide groove 22 to slide on the third slide groove 21. The rotation of the active connecting rod 14 drives the driven connecting rod 20 to rotate. Therefore, the rotation of the active connecting rod 14 and the driven connecting rod 20 can drive the support plate 1 to rise and fall, and the lifting of the support plate 1 drives the rubber semicircular collar 11 to rise and fall. In this way, the height of the fixing device can be adjusted according to the patient's comfort level to ensure the patient's comfort during medical treatment, thereby improving the practicality of the fixing device.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fixing device for improving the accuracy of patellar axial X-ray film, comprising a support plate (1) and a base plate (13), characterized in that: The support plate (1) is fixedly connected with a first slide groove (2), a driving shaft (3) is rotatably connected to the first slide groove (2), one end of the driving shaft (3) is fixedly connected with a driving handle (4), one end of the driving shaft (3) away from the driving handle (4) is fixedly connected with a threaded rod (5), a threaded block (6) is threadedly connected to the threaded rod (5), the threaded block (6) is slidably connected in the first slide groove (2), an adjusting link (7) is hinged on the threaded block (6), an adjusting rod (8) is hinged on the support plate (1), one end of the adjusting link (7) away from the threaded block (6) is hinged on the adjusting rod (8), a connecting rod (9) is fixedly connected to the adjusting rod (8), both ends of the connecting rod (9) are fixedly connected with mounting rods (10), a rubber semicircular ferrule (11) is fixedly connected to the mounting rod (10), and a pull rope (12) is fixedly connected to the rubber semicircular ferrule (11).

2. A fixing device for improving the accuracy of axial X-rays of the patella according to claim 1, characterized in that: The bottom plate (13) is provided with a second slide groove (15), the second slide groove (15) is slidably connected to a first slide plate (16), an active connecting rod (14) is hinged to the first slide plate (16), one end of the active connecting rod (14) away from the first slide plate (16) is hinged to the second slide plate (22), the support plate (1) is provided with a third slide groove (21), the second slide plate (22) is slidably connected to the third slide groove (21), the A driven connecting rod (20) is hinged on the active connecting rod (14), and both ends of the driven connecting rod (20) are hinged on the support plate (1) and the base plate (13). A cross bar (17) is fixedly connected to the active connecting rod (14), and a hydraulic rod (18) is hinged on the base plate (13). A push rod (19) is fixedly connected to the output end of the hydraulic rod (18), and one end of the push rod (19) away from the hydraulic rod (18) is hinged on the cross bar (17).

3. A fixing device for improving the accuracy of axial X-rays of the patella according to claim 1, characterized in that: A support leg (23) is fixedly connected to the support plate (1), and a pad (24) is fixedly connected to one end of the support leg (23) away from the support plate (1).

4. A fixing device for improving the accuracy of axial X-rays of the patella according to claim 1, characterized in that: The pull ropes (12) are provided in a plurality of groups, and the plurality of groups of pull ropes (12) are evenly distributed on the rubber semicircular ring (11).

5. A fixing device for improving the accuracy of axial X-rays of the patella according to claim 3, characterized in that: The support legs (23) are provided in four groups, and the four groups of support legs (23) are evenly distributed on the support plate (1) and the pad (24).

6. A fixing device for improving the accuracy of axial X-rays of the patella according to claim 2, characterized in that: The active connecting rod (14) and the driven connecting rod (20) are provided in two groups, and the two groups of the active connecting rod (14) and the driven connecting rod (20) are evenly distributed on the support plate (1) and the bottom plate (13).

7. A fixation device for improving the accuracy of axial X-rays of the patella according to claim 2, characterized in that: The active connecting rod (14) and the driven connecting rod (20) cross each other to form an X shape.

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