Leg circumference measuring ruler used for deep venous thrombosis judgment

Abstract

The invention provides a leg circumference measuring ruler used for deep venous thrombosis judgment. The leg circumference measuring ruler comprises a flexible ruler and a ruler head; the ruler head comprises an upper cover plate, a frame and a lower cover plate; the upper cover plate is combined on the upper side of the frame, and the lower cover plate is combined on the lower side of the frame;a notch is formed in the middle of the left end of the frame; a sliding block is mounted in the ruler head; the left end of the sliding block is connected with the right end of the flexible ruler, andthe left end of the flexible ruler extends from the notch to the exterior; one or more springs are mounted in the ruler head, the left ends of the springs are connected to the right end of the sliding block, and the right ends of the springs are connected to the inner side of the right end of the frame; the upper cover plate is formed to be transparent, and a first scale line is formed on the upper face of the upper cover plate; a second scale line is formed on the sliding block; and every time the leg circumference is measured, the first scale line is aligned with the second scale line. By arranging the springs in the ruler head, tightening force or tension applied to the flexible ruler during leg circumference measuring is reflected by extension and retraction of the springs, thus the degree of tightening a leg by the flexible ruler is reflected, and consistency of multiple times of measurement is ensured.

Description

technical field [0001] The application relates to a medical device, in particular to a leg measurement ruler for judging deep vein thrombosis. Background technique [0002] Deep vein thrombosis of the lower extremities usually causes swelling of the lower extremities, as described in "Research Progress in Nursing Care of Deep Vein Thrombosis of Lower Extremities" by Zhou Yating et al. One method for judging the deep vein thrombosis of the lower extremities of a patient is to measure the leg circumferences of both legs of the patient for comparison. Specifically, for each leg, the leg circumference at 15 cm from the upper edge of the patella and the leg circumference at 10 cm from the lower edge of the patella were measured. [0003] At present, a soft ruler is generally used to measure leg circumference. The measurer uses a tape measure to surround and cling to the patient's leg, thereby measuring the patient's leg circumference. However, when measuring, each person stick...

AI Technical Summary

Problems solved by technology

However, each person sticks the tape measure to the patient's leg differently when measuring, and even for the same measurer, in different measurements, the sticking degree of the tape measure to the leg is different each time

The muscles and tissues of the legs are elastic. If the degree of tightness is different each time, the degrees of tightening of the tissues or muscles of the legs are also different, which will greatly affect the measurement results

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