A leg circumference measuring tape

Abstract

The utility model discloses a leg circumference measuring scale relates to leg circumference measuring scale technical field. This kind of leg circumference measuring scale, including patella positioning plate, one side of patella positioning plate is provided with lower bearing shell, the inside of lower bearing shell is provided with measuring mechanism. This kind of leg circumference measuring scale uses, first patella positioning plate's top, is provided with the upper leg positioning plate of length 15 centimeters, the bottom of patella positioning plate is provided with the lower leg positioning plate of length 10 centimeters, and the width of upper leg positioning plate and lower leg positioning plate is 4 centimeters, and the upper leg positioning plate is set up on 14 centimeters away from patella positioning plate and is provided with upper bearing shell, and the lower leg positioning plate is set up on 9 centimeters away from patella positioning plate and is provided with lower bearing shell, and the inside of lower bearing shell and upper bearing shell is provided with measuring mechanism, and the leg circumference of patient is measured to be convenient for through setting measuring mechanism.

Description

Technical Field

[0001] This utility model belongs to the technical field of leg circumference measuring rulers, and specifically relates to a leg circumference measuring ruler. Background Technology

[0002] When measuring VTE (venous thromboembolism) in a hospital, measuring the calf and thigh dimensions is an important clinical assessment item, mainly used for screening and monitoring deep vein thrombosis.

[0003] Existing technologies lack a structure for precise measurement with a measuring ruler, resulting in hospitals still using the most conventional tape measure to measure VTE. Existing measuring tools can cause differences in leg circumference measurements due to variations in the tightness of the tape measure between individuals. Inaccurate positioning of the patella's midpoint can also lead to differences in leg circumference measurements, affecting doctors' judgment and consequently, treatment. Based on the shortcomings of existing technologies, this utility model designs a leg circumference measuring ruler. Utility Model Content

[0004] To address the aforementioned problems in the existing technology, this utility model provides a leg circumference measuring ruler, which features precise measurement positioning.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a leg circumference measuring ruler, including a patella positioning plate, a lower bearing shell is provided on one side of the patella positioning plate, and a measuring mechanism is provided inside the lower bearing shell;

[0006] The measuring mechanism includes a measuring scale body, a locking rod, a rotating shaft, a ratchet, a coil spring, a locking strip, a first spring, a slider, a positioning groove, a pressing rod, and a second spring. The measuring scale body is located inside the lower support shell. A locking rod is fixedly connected to one side of the measuring scale body. The rotating shaft is rotatably connected to the inside of the lower support shell. A ratchet is fixedly connected to one side of the rotating shaft. A coil spring is provided on one side of the rotating shaft. A locking strip is movably engaged on one side of the ratchet. A first spring is movably engaged on one side of the locking strip. A slider is provided on one side of the locking strip. A positioning groove is formed on the upper surface of the slider. A pressing rod is fixedly connected to one side of the slider. A second spring is movably engaged on one side of the slider.

[0007] As a preferred technical solution of the leg circumference measuring ruler of this utility model, the patella positioning plate is provided with an upper leg positioning plate at the top, a lower leg positioning plate at the bottom, a positioning band on one side, and an adhesive piece on one side.

[0008] As a preferred technical solution of the leg circumference measuring ruler of this utility model, the lower bearing shell is provided with an upper bearing shell at the top. The upper surface of the upper bearing shell is provided with a slot, the interior of the upper bearing shell is provided with a bearing groove, the interior of the upper bearing shell is provided with a sliding groove, a positioning rod is fixedly connected inside the sliding groove, and a pressing groove is provided on the upper surface of the sliding groove.

[0009] As a preferred technical solution of the leg circumference measuring ruler of this utility model, the main body of the measuring ruler is set inside the bearing groove, and the locking rod is movably locked inside the locking groove.

[0010] As a preferred technical solution of the leg circumference measuring ruler of this utility model, the rotating shaft is rotatably connected inside the bearing groove, and the ratchet is rotatably connected inside the bearing groove.

[0011] As a preferred technical solution of the leg circumference measuring ruler of this utility model, the spring is movably engaged inside the slider, and the slider is slidably connected inside the groove.

[0012] As a preferred technical solution of the leg circumference measuring ruler of this utility model, the slider is slidably sleeved on the outer surface of the positioning rod, the pressing rod is slidably connected inside the pressing groove, and the spring is movably engaged inside the sliding groove.

[0013] As a preferred technical solution of the leg circumference measuring ruler of this utility model, the upper bearing shell is disposed on one side of the upper leg positioning plate, and the lower bearing shell is disposed on one side of the lower leg positioning plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In use, this utility model, by setting the main body of the measuring ruler, when it is necessary to measure the circumference of the patient's thigh and calf, firstly locate the midpoint of the patella and attach the patella positioning plate to it. After attaching, attach one end of the positioning band to the left adhesive piece. Then, wrap the positioning band around the leg and fix the other end to the right adhesive piece, thereby fixing the patella positioning plate, upper leg positioning plate and lower leg positioning plate to the patient's leg. At this time, the upper bearing shell at the top of the upper leg positioning plate is 14 cm away from the patella, and the lower bearing shell at the bottom of the lower leg positioning plate is 9 cm away from the patella. Finally, pull the upper and lower sets of locking rods at the same time to pull the main body of the measuring ruler out and wrap it around the thigh and calf. Then, insert the locking rod into the locking groove and lock it. Then, press the upper and lower pressing rods at the same time to disengage the locking strip from the ratchet and cause the coil spring to rebound and pull the main body of the measuring ruler back and tighten it. Then, read the scale. This device is convenient for measuring the circumference of the patient's thigh and calf. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the patellar positioning plate structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the upper leg positioning plate structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the lower leg positioning plate structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the lower supporting shell structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the measuring mechanism structure of this utility model.

[0022] In the diagram: 1. Patellar positioning plate; 101. Upper leg positioning plate; 102. Lower leg positioning plate; 103. Positioning belt; 104. Adhesive piece; 2. Lower support shell; 201. Upper support shell; 202. Slot; 203. Support groove; 204. Slide groove; 205. Positioning rod; 206. Pressing groove; 3. Measuring mechanism; 301. Measuring ruler body; 302. Locking rod; 303. Rotating shaft; 304. Ratchet; 305. Coil spring; 306. Locking strip; 307. Spring one; 308. Slider; 309. Positioning groove; 310. Pressing rod; 311. Spring two. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] Please see Figure 1-5 The present invention provides the following technical solution: a leg circumference measuring ruler, including a patella positioning plate 1, a lower bearing shell 2 is provided on one side of the patella positioning plate 1, and a measuring mechanism 3 is provided inside the lower bearing shell 2;

[0026] The patellar positioning plate 1 has an upper leg positioning plate 101 at the top, a lower leg positioning plate 102 at the bottom, a positioning band 103 on one side, and an adhesive patch 104 on one side.

[0027] Further explanation is needed: the patellar positioning plate 1 has an upper leg positioning plate 101 with a length of 15 cm at the top and a lower leg positioning plate 102 with a length of 10 cm at the bottom. The width of both the upper leg positioning plate 101 and the lower leg positioning plate 102 is 4 cm.

[0028] Example 2

[0029] Please see Figure 3-5 The present invention provides the following technical solution:

[0030] The measuring mechanism 3 includes a measuring ruler body 301, a locking rod 302, a rotating shaft 303, a ratchet 304, a coil spring 305, a locking strip 306, a first spring 307, a slider 308, a positioning groove 309, a pressing rod 310, and a second spring 311. The measuring ruler body 301 is located inside the lower bearing shell 2. The locking rod 302 is fixedly connected to one side of the measuring ruler body 301. The rotating shaft 303 is rotatably connected to the inside of the lower bearing shell 2. The ratchet 304 is fixedly connected to one side of the rotating shaft 303. A coil spring 305 is provided on one side of the rotating shaft 303. A locking strip 306 is movably engaged on one side of the ratchet 304. A first spring 307 is movably engaged on one side of the locking strip 306. A slider 308 is provided on one side of the locking strip 306. A positioning groove 309 is provided on the upper surface of the slider 308. A pressing rod 310 is fixedly connected to one side of the slider 308. A second spring 311 is movably engaged on one side of the slider 308.

[0031] The lower support shell 2 is provided with an upper support shell 201 at the top. The upper surface of the upper support shell 201 is provided with a slot 202. The interior of the upper support shell 201 is provided with a support groove 203 and a sliding groove 204. A positioning rod 205 is fixedly connected inside the sliding groove 204. The upper surface of the sliding groove 204 is provided with a pressing groove 206.

[0032] The measuring ruler body 301 is set inside the bearing groove 203, and the locking rod 302 is movably locked inside the locking groove 202.

[0033] The rotating shaft 303 is rotatably connected inside the bearing groove 203, and the ratchet 304 is rotatably connected inside the bearing groove 203.

[0034] Spring 307 is movable and snapped into the inside of slider 308, and slider 308 is slidably connected to the inside of slide groove 204.

[0035] The slider 308 is slidably sleeved on the outer surface of the positioning rod 205, the pressing rod 310 is slidably connected to the inside of the pressing groove 206, and the spring 311 is movably engaged in the inside of the sliding groove 204.

[0036] The upper bearing shell 201 is disposed on one side of the upper leg positioning plate 101, and the lower bearing shell 2 is disposed on one side of the lower leg positioning plate 102.

[0037] Further explanation is needed: the lower support shell 2 is positioned on the lower leg positioning plate 102 at a distance of 9 cm from the patella positioning plate 1, and the upper support shell 201 is positioned on the upper leg positioning plate 101 at a distance of 14 cm from the patella positioning plate 1. First, the midpoint of the patella is located and the patella positioning plate 1 is attached to it. After attachment, one end of the positioning strap 103 is attached to the left adhesive piece 104. Then, the positioning strap 103 is wrapped around the leg and the other end is fixed to the right adhesive piece 104, thereby aligning the patella positioning plate 1, the upper leg positioning plate 101, and the lower leg positioning plate. 102 is fixed to the patient's leg. At this time, the upper support shell 201 at the top of the upper leg positioning plate 101 is 14 cm away from the patella, while the lower support shell 2 at the bottom of the lower leg positioning plate 102 is 9 cm away from the patella. Finally, pull the upper and lower sets of locking rods 302 at the same time to release the measuring ruler body 301 and wrap it around the thigh and calf. Then, insert the locking rod 302 into the locking slot 202 and lock it. Then, press the upper and lower pressing rods 310 at the same time to disengage the locking strip 306 from the ratchet 304 and cause the coil spring 305 to rebound and pull the measuring ruler body 301 back to tighten it before reading the scale.

[0038] Working principle: When a leg circumference measuring ruler is used, firstly, an upper leg positioning plate 101 with a length of 15 cm is set at the top of the patella positioning plate 1, and a lower leg positioning plate 102 with a length of 10 cm is set at the bottom of the patella positioning plate 1. The width of the upper leg positioning plate 101 and the lower leg positioning plate 102 is 4 cm. An upper support shell 201 is set on the upper leg positioning plate 101 at a distance of 14 cm away from the patella positioning plate 1, and a lower support shell 2 is set on the lower leg positioning plate 102 at a distance of 9 cm away from the patella positioning plate 1. A measuring mechanism 3 is set inside both the lower support shell 2 and the upper support shell 201. The measurement mechanism 3 facilitates the measurement of the patient's leg circumference.

[0039] When it is necessary to measure the circumference of the patient's thigh and calf, first locate the midpoint of the patella and attach the patella positioning plate 1 to it. After attachment, attach one end of the positioning band 103 to the left adhesive patch 104. Then, wrap the positioning band 103 around the leg and fix the other end to the right adhesive patch 104. This fixes the patella positioning plate 1, the upper leg positioning plate 101, and the lower leg positioning plate 102 to the patient's leg. At this time, the upper bearing shell 201 at the top of the upper leg positioning plate 101 is 14 cm away from the patella. The lower support shell 2 at the bottom of the lower leg positioning plate 102 is 9 cm away from the patella. Finally, pull the upper and lower sets of locking rods 302 simultaneously to release the measuring ruler body 301 and wrap it around the thigh and calf. Then, insert the locking rods 302 into the locking slots 202 to lock them. Then, press the upper and lower pressing rods 310 simultaneously to disengage the locking strip 306 from the ratchet 304 and cause the coil spring 305 to rebound and pull the measuring ruler body 301 back to tighten it. The scale can then be read. This device is convenient for measuring the circumference of the patient's thigh and calf.

[0040] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A girth measuring tape comprising a patella positioning plate (1), characterized in that: A lower support shell (2) is provided on one side of the patella positioning plate (1), and a measuring mechanism (3) is provided inside the lower support shell (2). The measuring mechanism (3) includes a measuring scale body (301), a locking rod (302), a rotating shaft (303), a ratchet (304), a coil spring (305), a locking strip (306), a spring one (307), a slider (308), a positioning groove (309), a pressing rod (310), and a spring two (311). The measuring scale body (301) is located inside the lower bearing shell (2). A locking rod (302) is fixedly connected to one side of the measuring scale body (301). The rotating shaft (303) is rotatably connected inside the lower bearing shell (2). A ratchet (304) is fixedly connected to one side of the shaft (303), a coil spring (305) is provided on one side of the shaft (303), a locking bar (306) is movably engaged on one side of the ratchet (304), a spring (307) is movably engaged on one side of the locking bar (306), a slider (308) is provided on one side of the locking bar (306), a positioning groove (309) is provided on the upper surface of the slider (308), a pressing rod (310) is fixedly connected to one side of the slider (308), and a spring (311) is movably engaged on one side of the slider (308).

2. A leg circumference measuring tape according to claim 1, wherein: The patellar positioning plate (1) has an upper leg positioning plate (101) at its top, a lower leg positioning plate (102) at its bottom, a positioning band (103) on one side, and an adhesive patch (104) on one side.

3. A leg circumference measuring tape according to claim 1, wherein: The lower support shell (2) is provided with an upper support shell (201) at the top. The upper surface of the upper support shell (201) is provided with a slot (202). The interior of the upper support shell (201) is provided with a support groove (203). The interior of the upper support shell (201) is provided with a sliding groove (204). A positioning rod (205) is fixedly connected inside the sliding groove (204). The upper surface of the sliding groove (204) is provided with a pressing groove (206).

4. A leg circumference measuring tape according to claim 1, wherein: The measuring ruler body (301) is set inside the bearing groove (203), and the locking rod (302) is movably locked inside the locking groove (202).

5. A leg circumference measuring tape according to claim 1, wherein: The rotating shaft (303) is rotatably connected inside the bearing groove (203), and the ratchet (304) is rotatably connected inside the bearing groove (203).

6. A leg circumference measuring tape according to claim 1, wherein: The spring (307) is movably engaged inside the slider (308), and the slider (308) is slidably connected inside the groove (204).

7. A leg circumference measuring tape according to claim 1, wherein: The slider (308) is slidably sleeved on the outer surface of the positioning rod (205), the pressing rod (310) is slidably connected to the inside of the pressing groove (206), and the second spring (311) is movably engaged in the inside of the sliding groove (204).

8. A leg circumference measuring tape according to claim 3, wherein: The upper support shell (201) is disposed on one side of the upper leg positioning plate (101), and the lower support shell (2) is disposed on one side of the lower leg positioning plate (102).

Images