Leg circumference measurer
By designing a leg circumference measuring device with a closed ring measuring tape and support mechanism, the problem of large measurement error in lower limb leg circumference was solved, achieving fast, accurate and safe measurement results, which is suitable for the preliminary diagnosis of diseases such as sarcopenia.
Patent Information
- Application Number
- CN202422899110.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Existing technologies for measuring lower limb leg circumference have large errors, affecting the accurate assessment of treatment effects. In particular, measurements at the midpoint of the patella are inaccurate and cumbersome.
A leg circumference measuring device was designed, which includes a ring-shaped closed measuring tape and a support mechanism. It is equipped with upper and lower measuring components, a digital display screen and a patella positioning block. The tape measure is automatically wound up by a small motor and the value is displayed on the digital display screen. The support mechanism and adjustment mechanism are combined to adapt to different test subjects.
It improves the convenience and accuracy of measurement, reduces human error, and ensures consistency and safety in every measurement, making it particularly suitable for medical settings that require precise measurements.
Smart Images

Figure CN223715715U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical auxiliary technique field, concretely relates to a leg circumference measuring device. BACKGROUND
[0002] In the medical field, lower limb disease patients such as varicose veins or thrombus patients need to measure the lower limb leg circumference, and this process takes a long time and needs to be measured at multiple positions. Because there is a large error in the manual positioning of clinical medical staff, this affects the evaluation of the treatment effect. At present, medical staff in clinical work only use soft tape to measure, especially when measuring the positions 15 cm above and 10 cm below the patella midpoint, the error is large, and the main reasons include: inaccurate positioning (patella midpoint), different tightness of the tape and different patient positions. These error sources limit the accuracy of measurement and affect the accurate evaluation of the treatment effect, so the lower limb leg circumference measuring device in the file aims to solve these problems, and the fixed support and patella marking assembly are designed to improve the accuracy of measurement and reduce errors.
[0003] In the prior art, for example, a lower limb leg circumference measuring device is disclosed in Chinese utility model patent (authorized publication number CN221711942U), and its working principle is to use a fixed support, which is provided with a patella marking assembly, an upper measuring assembly and a lower measuring assembly. The patella marking assembly includes an arc-shaped silica gel limiting cover, a middle magic bracelet and a fixing belt, which is used to determine and mark the midpoint of the patient's patella, and the fixed support is fixed on the corresponding position of the patient's leg through the magic bracelet and the fixing belt. The upper measuring assembly and the lower measuring assembly are respectively located 15 cm above and 10 cm below the patella marking assembly, and they include an upper magic bracelet and a lower magic bracelet and corresponding measuring soft tape. By aligning the center point of the arc-shaped silica gel limiting cover on the fixed support with the actual midpoint of the patient's patella and buckling, with the help of the soft tape already fixed on the fixed support, the medical staff can accurately complete the measurement of the leg circumference 15 cm above and 10 cm below the midpoint of the patella. This design makes the measurement data error small, effectively reducing the treatment effect evaluation problem caused by errors.
[0004] The soft tape in the prior art still needs to be pulled out to measure the leg, and this process is simple but has room for improvement. Instead, the soft tape can be designed to enclose the leg in the initial state, which can measure the leg circumference more quickly, and further set an alarm device that will be triggered as long as it is below the set value. UTILITY MODEL CONTENTS
[0005] In view of the above problems, a leg circumference measuring device is provided, which improves the accuracy and convenience of measurement by setting a ring-shaped closed measuring tape and a supporting mechanism.
[0006] To solve the prior art problems, the utility model provides a leg circumference measurer, including measuring mechanism, the measuring mechanism includes upper measurement component and lower measurement component, upper measurement component includes the upper measurement tape that surrounds the upper leg, lower measurement component includes the lower measurement tape that surrounds the lower leg, upper measurement component and lower measurement component all are equipped with small motor and digital display screen.
[0007] Preferably, the digital display screen is provided with an alarm.
[0008] Preferably, the upper measurement component and the lower measurement component are provided with a patella positioning block.
[0009] Preferably, the leg circumference measurer comprises a supporting mechanism, the supporting mechanism comprises a stepping plate and a supporting rod, the stepping plate is arranged on the ground, and the supporting rod is connected with the measuring mechanism.
[0010] Preferably, the supporting rod is provided with an adjusting mechanism, the adjusting mechanism comprises a moving block and a moving rod, the moving block is fixedly connected with the patella positioning block, a limiting through hole is formed in the moving block, and the moving rod passes through the limiting through hole and is arranged in the moving block.
[0011] Preferably, the moving rod is provided with a limiting block, and the limiting block cannot pass through the limiting through hole.
[0012] Compared with the prior art, the leg circumference measurer has the beneficial effects that:
[0013] 1. The leg circumference measurer automatically winds the tape and reads the digital display screen, thereby significantly improving the convenience and accuracy of measurement.
[0014] 2. The upper measurement component, the lower measurement component and the patella positioning block are fixedly connected, so that each measurement can start from the same starting point, thereby ensuring the consistency of the measurement results.
[0015] 3. The supporting mechanism and the adjusting mechanism improve the adaptability and safety of measurement. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a three-dimensional schematic view of a leg circumference measurer.
[0017] Figure 2is Figure 1 A local enlarged view at middle A.
[0018] Figure 3 is a front view of a leg circumference measuring device.
[0019] Figure 4 is a side view of a leg circumference measuring device.
[0020] Figure 5 is an exploded view of a leg circumference measuring device.
[0021] Figure 6 is a perspective view of a measuring mechanism of a leg circumference measuring device.
[0022] The figure is marked: 1, measuring mechanism; 11, upper measuring assembly; 111, upper measuring tape; 12, lower measuring assembly; 121, lower measuring tape; 2, digital display screen; 3, patella positioning block; 4, supporting mechanism; 41, stepping plate; 42, supporting rod; 5, adjusting mechanism; 51, moving rod; 52, moving block; 521, limiting through hole; 6, limiting block. DETAILED DESCRIPTION
[0023] In order to further understand the characteristics, technical means and specific purposes and functions achieved by the present application, the present application will be described in further detail below in combination with the drawings and specific embodiments.
[0024] Referring to Figures 1-6 The figure is marked: a leg circumference measuring device, comprising a measuring mechanism 1, the measuring mechanism 1 comprising an upper measuring assembly 11 and a lower measuring assembly 12, the upper measuring assembly 11 comprising an upper measuring tape 111 around the thigh, the lower measuring assembly 12 comprising a lower measuring tape 121 around the calf, and the upper measuring assembly 11 and the lower measuring assembly 12 both being provided with a small motor and a digital display screen 2.
[0025] In the prior art, the tape needs to be pulled out and then wrapped around the leg for one circle to be measured, and since the human eye needs to be observed, the read-out values are all estimated values, and there is a certain error. In view of this, in the present application, the upper measuring tape 111 and the lower measuring tape 121 are in a ring shape in the initial state, and the inner ring size of the ring is larger than the leg size of the person to be measured. When the leg of the person to be measured needs to be measured, the person to be measured's foot is put through the ring-shaped inner circle of the upper measuring tape 111, and then taken out from the ring-shaped inner circle of the lower measuring tape 121. The upper measuring assembly 11 and the lower measuring assembly 12 are provided with a small motor, which is used for winding the upper measuring tape 111 and the lower measuring tape 121, and the upper measuring assembly 11 and the lower measuring assembly 12 are provided with a digital display screen 2, which is used to display the measured leg circumference value of the upper measuring tape 111 and the lower measuring tape 121.
[0026] Referring toFigure 1 and Figure 2 As shown in FIG. 2, the digital display screen 2 is provided with an alarm.
[0027] When the value displayed on the digital display screen 2 is less than a certain value, the alarm will be triggered to prompt the doctor or nurse, and the value can be adjusted. For example, for sarcopenia, the target user is an elderly person over 60 years old, when the test object is a male, the lower measuring tape 121 alarm value is set to 34 cm, and when the value displayed on the digital display screen 2 is less than 34 cm, it can be preliminarily determined that the male has sarcopenia. When the test object is a female, the lower measuring tape 121 alarm value is set to 33 cm, and when the value displayed on the digital display screen 2 is less than 33 cm, it can be preliminarily determined that the female has sarcopenia.
[0028] Referring to Figure 6 As shown in FIG. 1, a patella positioning block 3 is arranged between the upper measuring assembly 11 and the lower measuring assembly 12.
[0029] The patella positioning block 3 is used to position the patella. Since the corresponding positions of the leg measured by the thigh circumference and the calf circumference are both started from the patella, it is only necessary to first determine the distance between the thigh and the calf and the patella, set the patella positioning block 3 at the patella, set the upper measuring assembly 11 at the thigh circumference measurement position, and set the lower measuring assembly 12 at the calf circumference measurement position, and then fixedly connect the three. When measuring, only the patella position is positioned by the patella positioning block 3, and the thigh circumference and the calf circumference can be accurately measured.
[0030] Referring to Figures 1-5 As shown in FIG. 1, the measuring mechanism 1 comprises a supporting mechanism 4, the supporting mechanism 4 comprises a stepping plate 41 and a supporting rod 42, the stepping plate 41 is arranged on the ground, and the supporting rod 42 is connected with the measuring mechanism 1.
[0031] The stepping plate 41 is arranged on the ground, providing a stable standing point for the person to be measured. The person to be measured only needs to put his feet through the inner ring of the upper measuring tape 111 and the lower measuring tape 121 and step on the stepping plate 41, and the measuring mechanism 1 can measure the thigh circumference and the calf circumference, thereby simplifying the measurement process and accelerating the measurement speed.
[0032] Referring to Figures 1-5 As shown in FIG. 1, the supporting rod 42 is provided with an adjusting mechanism 5, the adjusting mechanism 5 comprises a moving block 52 and a moving rod 51, the moving block 52 is fixedly connected with the patella positioning block 3, a limiting through hole 521 is arranged on the moving block 52, and the moving rod 51 is arranged in the moving block 52 through the limiting through hole 521.
[0033] Because of the differences between people, the length of the legs are also different, resulting in different distances from the patella to the ground, so the adjusting mechanism 5 is needed, by adjusting the position of the moving block 52 on the moving rod 51, the position of the patella limiting block 6 can be adjusted, so that the patella limiting block 6 corresponds to the position of the patella, so that the thigh circumference and the calf circumference can be accurately measured.
[0034] Referring to Figures 1-5 As shown: the moving rod 51 is provided with a limiting block 6, and the limiting block 6 cannot pass through the limiting through hole 521.
[0035] The limiting block 6 cannot pass through the limiting through hole 521, so when the limiting block 6 moves up and down along the moving rod 51, it will not accidentally slip off the moving rod 51.
[0036] The leg circumference measuring device is composed of an upper measuring assembly 11 and a lower measuring assembly 12. Both the upper measuring assembly 11 and the lower measuring assembly 12 are equipped with a tape measure, which is in a ring shape in the initial state, and the size of the ring is sufficient to accommodate the leg of the person to be measured. The upper measuring assembly 11 is used to measure the thigh circumference, and the lower measuring assembly 12 is used to measure the calf circumference. The person to be measured only needs to put his foot through the inner ring of the upper measuring tape 111, and then take it out from the inner ring of the lower measuring tape 121, and then the small motor will automatically wind the tape measure, and the digital display screen 2 will display the measurement value of the leg circumference in real time.
[0037] In order to ensure the accuracy of the measurement, the measuring device is equipped with a patella positioning block 3, which is used to accurately position the patella position, because the measurement of the thigh circumference and the calf circumference is based on the patella. By fixedly connecting the upper measuring assembly 11 at the thigh circumference measurement position, the lower measuring assembly 12 at the calf circumference measurement position and the patella positioning block 3, the consistency and accuracy of each measurement can be ensured.
[0038] Considering the different heights of the persons to be measured, the measuring device also includes a supporting mechanism 4 composed of a stepping plate 41 and a supporting rod 42. The stepping plate 41 is fixed to the ground to provide a stable standing point for the person to be measured. The supporting rod 42 is connected to the measuring mechanism 1 to ensure stability during measurement. In order to adapt to the different leg lengths of the persons to be measured, the supporting rod 42 is also provided with an adjusting mechanism 5, which can adjust the position of the patella positioning block 3 through the cooperation of the moving block 52 and the moving rod 51, to ensure the accuracy of the measurement.
[0039] In addition, the digital display screen 2 is also provided with an alarm, which will be triggered when the measurement value is lower than the preset warning value, reminding the doctor or nurse to pay attention. This function is particularly useful for preliminary diagnosis of diseases such as sarcopenia. For example, for people over 60 years old, different warning values can be set according to gender, and when the measurement result is lower than these values, it can be preliminarily judged that the person to be measured may have sarcopenia.
[0040] In order to ensure the stability of the adjusting mechanism 5, the limiting block 6 is arranged on the moving rod 51, and the size of the limiting block 6 is greater than that of the limiting through hole 521, so that the limiting block 6 can be prevented from sliding out accidentally in the use process, and the safety and reliability of the measuring device are ensured.Through the design, the leg circumference measuring device not only improves the convenience and accuracy of measurement, but also increases the safety and adaptability of use, so that it becomes a practical medical auxiliary tool.
[0041] The above embodiment only expresses one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.
Claims
1. A leg circumference measuring device, comprising a measuring mechanism (1), characterized in that, The measuring mechanism (1) includes an upper measuring component (11) and a lower measuring component (12). The upper measuring component (11) includes an upper measuring tape (111) that wraps around the thigh, and the lower measuring component (12) includes a lower measuring tape (121) that wraps around the calf. Both the upper measuring component (11) and the lower measuring component (12) are equipped with a small motor and a digital display screen (2).
2. The leg circumference measuring device according to claim 1, characterized in that, An alarm is installed inside the digital display screen (2).
3. A leg circumference measuring device according to claim 1, characterized in that, A patellar positioning block (3) is provided between the upper measuring component (11) and the lower measuring component (12).
4. A leg circumference measuring device according to claim 3, characterized in that, It includes a support mechanism (4), which includes a foot pedal (41) and a support rod (42). The foot pedal (41) is located on the ground, and the support rod (42) is connected to the measuring mechanism (1).
5. A leg circumference measuring device according to claim 4, characterized in that, The support rod (42) is provided with an adjustment mechanism (5), which includes a moving block (52) and a moving rod (51). The moving block (52) is fixedly connected to the patella positioning block (3). A limiting through hole (521) is opened on the moving block (52), and the moving rod (51) passes through the limiting through hole (521) into the moving block (52).
6. A leg circumference measuring device according to claim 5, characterized in that, The moving rod (51) is provided with a limiting block (6), which cannot pass through the limiting through hole (521).
Citation Information
Patent Citations
Lower limb leg circumference measurer
CN221711942U