Easy-to-use knee digital image positioning instrument

Abstract

The invention discloses an easy-to-use knee digital image positioning instrument, which comprises a bottom plate, a telescopic rod inserted into the guide cylinder, and the upper end of the telescopic rod is connected to the upper end of the inner cavity of the guide cylinder through a second spring , the lower end of the telescopic rod is provided with a horizontal and right measuring rod, and the measuring rod is located above the support plate. The patient lies on the floor, the legs are placed on the support board, the baffle is wide and the bottom is thin, so that it can adapt to legs of different thicknesses. The two baffles are narrow on the left and wide on the right, which is suitable for the growth characteristics of the legs, so that they will not get stuck It is tighter, which ensures the angle and verticality at the same time. It is more accurate. At the same time, different heights and different leg lengths can be adjusted by turning the rotating rod to prevent the feet from standing on the bottom plate, causing the legs to be skewed and causing For measuring errors, the supporting plate can support the person's head, which is more comfortable. Pull out the pull block to adjust the inclination, and pull down the measuring rod to visually measure the person's straightness. Therefore, the overall use is very convenient.

Description

technical field [0001] The invention belongs to the technical field of photographic examination and relates to a knee positioner, in particular to an easy-to-use knee digital image positioner. Background technique [0002] At present, when the radiology department of each hospital performs knee joint lateral examination, the subject is lying on the imaging bed with the affected side on the lower side, the knee joint is flexed at an angle of 135°, the coronal plane is perpendicular to the bed plane, and the centerline of the tube ball is cephalad. Tilt 5-10°, and inject at the midpoint between the lower edge of the patella and the fold line of the popliteal fossa. The operator does not have an accurate body surface positioning point to complete the 135° angle of knee joint flexion during the positioning process, and the coronal plane is perpendicular to the bed surface, which lacks operability. At the same time, according to the patient's size, the center line is inclined to ...

AI Technical Summary

Problems solved by technology

In addition, the lower limb of the affected side cannot be perpendicular to the bed surface and the inclination angle of the center line is not appropriate, which will cause the medial and lateral femoral condyles to fail to coincide.

There are also auxiliary positioning instruments on the market, such as the patent with the announcement number CN 202005761 U. Although it can measure the angle, it needs to manually adjust the angle. For some elderly people, it is tiring to maintain an angle posture, and the same is true for children. Like to move, affect the test results, so it is inconvenient to use

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