A leg circumference measuring device

Abstract

The utility model discloses a kind of leg circumference measuring devices, effectively facilitate medical staff to measure the leg circumference of patient, including adjusting bin, the left and right sides of the adjusting bin are symmetrically fixedly connected with first storage box and second storage box, the inside of first storage box and second storage box is equipped with first measuring scale, the inside of adjusting bin is equipped with rotatable power sleeve, each the first measuring scale is wound in the outside of power sleeve, the end of each first measuring scale away from power sleeve is equipped with second measuring box, the inside of second measuring box is equipped with second measuring scale that can be collected and expanded. The utility model novel structure, ingenious, easy and simple to operate, make first measuring scale can automatically extend, facilitate medical staff to adjust the extension length of first measuring scale, make the storage of first measuring scale more smooth, increase the sealing performance of device whole.

Description

Technical Field

[0001] This utility model belongs to the field of medical and nursing device technology, and relates to a leg circumference measuring device. Background Technology

[0002] Deep vein thrombosis (DVT) in the lower extremities typically causes varying degrees of lower extremity swelling. Daily measurement of leg circumference is a crucial indicator for assessing the improvement of this swelling. The usual method involves using a soft measuring tape to measure and record the thigh and calf circumferences daily, 10-15 cm above and below the knee joint. The measurement data is then compared daily to determine the extent of swelling. The specific measurement location is determined by medical staff based on individual patient differences. Currently, in practice, medical staff first locate a reference point at the patella of the knee joint and mark it with a marker. Then, using this marked point as a reference, they measure 10-15 cm along the thigh or calf to determine the leg circumference measurement location and mark it. Subsequent measurements only require finding the marked point or line. However, this method is inconvenient due to the need for multiple measurements in daily practice. Therefore, a leg circumference measurement device that is easy for medical staff to operate is needed to solve this problem. Utility Model Content

[0003] To address the aforementioned problems, this invention proposes a leg circumference measuring device, which effectively solves the problems in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A leg circumference measuring device includes an adjustment chamber. A first storage box and a second storage box are symmetrically fixedly connected to the left and right sides of the adjustment chamber. A first measuring ruler is provided inside the first storage box and the second storage box. A rotatable power sleeve is provided inside the adjustment chamber. Each first measuring ruler is wound around the outside of the power sleeve. A second measuring box is provided at the end of each first measuring ruler away from the power sleeve. A retractable second measuring ruler is provided inside the second measuring box.

[0006] Preferably, the first measuring ruler is made of carbon steel and has a U-shaped cross-section in its natural state, and the second measuring ruler is a tape measure. Both the first and second measuring rulers are provided with measuring scales.

[0007] Preferably, a first fixing rod is fixedly connected inside the adjustment chamber, and the power sleeve is fitted on the outside of the first fixing rod. A first spring is symmetrically provided on the left and right sides of the outside of the first fixing rod. The end of each first spring away from the first fixing rod is fixedly connected to the inner side wall of the power sleeve. The winding direction of the first spring is opposite to the winding direction of the first measuring scale.

[0008] Preferably, plastic rings are fixedly connected to the inner sidewalls of the first storage box and the second storage box. Each plastic ring has a through hole in the middle. Each first measuring ruler passes through the through hole and is fixedly connected to the corresponding second measuring box. Each through hole has a rotating roller that is rotatably connected to the adjustment chamber.

[0009] Preferably, a second fixing rod is fixedly connected inside the second measuring box, a second spring is provided on the outside of the second fixing rod, a second sleeve is rotatably connected inside the second measuring box, the end of the second spring away from the second fixing rod is fixedly connected to the second sleeve, the second measuring ruler is wound around the outside of the second sleeve, the side of the second measuring ruler close to the second sleeve is fixedly connected to the second sleeve, and the end of the second measuring ruler away from the second sleeve passes through the side wall of the second measuring box and is fixedly connected to a measuring head.

[0010] Preferably, both the first and second storage boxes are provided with ratchet wheels that are fixedly connected to the power sleeve on the side near the adjustment chamber. Each ratchet wheel has ratchet teeth on both its upper and lower sides, and each ratchet tooth is rotatably connected to the power sleeve. Each ratchet tooth has a return spring on the side away from the ratchet wheel. Each of the upper and lower sides of the adjustment chamber is slidably connected with a pressing block, and the side of each pressing block near the ratchet tooth abuts against the ratchet tooth.

[0011] Preferably, an operating ring is fixedly fitted in the middle of the power sleeve, and multiple anti-slip protrusions are fixedly connected to the outer side of the operating ring. Sealing rubber is provided on both the left and right sides of the operating ring.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model has a first measuring ruler and a second measuring ruler. The first measuring ruler is used to locate the distance of 10-15cm between the upper and lower sides of the patient's patella, and the second measuring ruler is used to measure the leg circumference at two specific locations, which is convenient for medical staff to operate.

[0014] 2. This utility model has a first storage box, a second storage box, and a second measuring box, which can store the first measuring ruler and the second measuring ruler, making it convenient for medical staff to carry with them to measure the leg circumference of patients. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram showing the position of the first fixing rod in this utility model.

[0017] Figure 3 This is a schematic diagram showing the position of the first spring in this utility model.

[0018] Figure 4 This utility model Figure 2 A magnified view of a portion of region A in the middle.

[0019] Figure 5 This utility model Figure 3 A magnified view of a portion of region B in the middle.

[0020] In the diagram: 1. Adjustment chamber; 2. First storage box; 3. Second storage box; 4. First measuring scale; 5. Power sleeve; 6. Second measuring box; 7. Second measuring scale; 8. First fixing rod; 9. First mainspring; 10. Plastic ring; 11. Through hole; 12. Rotating roller; 13. Second fixing rod; 14. Second mainspring; 15. Second sleeve; 16. Measuring head; 17. Ratchet; 18. Ratchet tooth; 19. Return spring; 20. Pressing block; 21. Operating ring; 22. Anti-slip protrusion; 23. Sealing rubber. Detailed Implementation

[0021] 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.

[0022] The following is in conjunction with the appendix Figures 1 to 5 The specific embodiments of this utility model will be described in further detail.

[0023] Depend on Figures 1 to 5 As shown, this utility model includes an adjustment chamber 1. To facilitate the measurement of the patient's leg circumference, a first storage box 2 and a second storage box 3 are symmetrically fixedly connected to the left and right sides of the adjustment chamber 1. A first measuring ruler 4 is provided inside the first storage box 2 and the second storage box 3. A rotatable power sleeve 5 is provided inside the adjustment chamber 1. Each first measuring ruler 4 is wrapped around the outside of the power sleeve 5. A second measuring box 6 is provided at the end of each first measuring ruler 4 away from the power sleeve 5. A retractable second measuring ruler 7 is provided inside the second measuring box 6.

[0024] Furthermore, by Figures 1 to 5 As shown, in order to enable the first measuring ruler 4 to extend automatically, the first measuring ruler 4 is made of carbon steel and its cross-section is U-shaped in its natural state. The second measuring ruler 7 is a tape measure. Both the first measuring ruler 4 and the second measuring ruler 7 are provided with measuring scales. The length of the first measuring ruler 4 is 20cm. When needed, the extension length of the first measuring ruler 4 can be reduced by rotating the power sleeve 5. The measuring scales on the two first measuring rulers 4 are "0, 5cm, 10cm, 15cm" and the measuring scales on the two second measuring rulers 7 are "0cm, 5cm, 10cm, 15cm, 20cm, 25cm, 30cm, 35cm, 40cm, 45cm, 50cm, 55cm, 60cm".

[0025] When in use, in the non-use state, the two first measuring rulers 4 are respectively stored inside the first storage box 2 and the second storage box 3, and the second measuring ruler 7 is stored inside the second measuring box 6. The side walls of the first storage box 2 and the second storage box 3 are provided with U-shaped holes that are adapted to the U-shaped cross-section of the first measuring ruler 4. The ends of the two first measuring rulers 4 away from the power sleeve 5 pass through the corresponding U-shaped holes and are fixedly connected to the corresponding second measuring box 6.

[0026] When it is necessary to measure the patient's leg circumference, the medical staff can rotate the power sleeve 5, which drives each second measuring ruler 7 to rotate. At this time, the rotation direction of the power sleeve 5 is opposite to the winding direction of the first measuring ruler 4. Under the pushing action of the power sleeve 5, the first measuring ruler 4 will continuously pass through the U-shaped hole. Due to the shape design of the U-shaped hole, the first measuring ruler 4 can remain straight after being extended, supporting the second measuring box 6. Then, the second measuring ruler 7 can be pulled out from the second measuring box 6 to measure the patient's leg circumference.

[0027] Furthermore, by Figures 1 to 5 As shown, in order to facilitate operation by medical staff, a first fixed rod 8 is fixedly connected inside the adjustment chamber 1. The power sleeve 5 is fitted on the outside of the first fixed rod 8. A first spring 9 is provided symmetrically on the left and right sides of the outside of the first fixed rod 8. The end of each first spring 9 away from the first fixed rod 8 is fixedly connected to the inner side wall of the power sleeve 5. The winding direction of the first spring 9 is opposite to the winding direction of the first measuring ruler 4.

[0028] When in use, the power sleeve 5 can be automatically rotated by the power stored in the first spring 9.

[0029] Furthermore, by Figures 1 to 5As shown, in order to make the storage of the first measuring ruler 4 smoother, a plastic ring 10 is fixedly connected to the inner side wall of the first storage box 2 and the second storage box 3. The plastic ring 10 is made of polyetheretherketone material and has good self-lubricating properties. Each plastic ring 10 has a through hole 11 in the middle. Each first measuring ruler 4 passes through the through hole 11 and is fixedly connected to the corresponding second measuring box 6. Each through hole 11 has a rotating roller 12 inside that is rotatably connected to the adjustment chamber 1.

[0030] In use, the rotating roller 12 is used to make the U-shaped design of the first measuring scale 4 after passing through the through hole 11 become rectangular when storing the first measuring scale 4, so that it can be bent and stored on the outside of the power sleeve 5.

[0031] Furthermore, by Figures 1 to 5 As shown, in order to facilitate the measurement of the patient's leg circumference, a second fixed rod 13 is fixedly connected inside the second measuring box 6, and a second spring 14 is provided on the outside of the second fixed rod 13. A second sleeve 15 is rotatably connected inside the second measuring box 6. The end of the second spring 14 away from the second fixed rod 13 is fixedly connected to the second sleeve 15. A second measuring ruler 7 is wound around the outside of the second sleeve 15. The side of the second measuring ruler 7 close to the second sleeve 15 is fixedly connected to the second sleeve 15. A measuring head 16 is fixedly connected through the side wall of the second measuring box 6 at the end of the second measuring ruler 7 away from the second sleeve 15.

[0032] When in use, the patient's leg circumference can be measured through the measuring head 16 and the measuring scale. When the second measuring ruler 7 is pulled out, the second spring 14 is charged so that the second measuring ruler 7 can be automatically retracted when not in use.

[0033] Furthermore, by Figures 1 to 5 As shown, in order to facilitate operation by medical staff, the first storage box 2 and the second storage box 3 are each provided with a ratchet 17 fixedly connected to the power sleeve 5 on the side near the adjustment chamber 1. Each ratchet 17 has a ratchet tooth 18 on both the upper and lower sides. Each ratchet tooth 18 is rotatably connected to the power sleeve 5. Each ratchet tooth 18 is provided with a return spring 19 on the side away from the ratchet 17. Each of the upper and lower sides of the adjustment chamber 1 is slidably connected with a pressing block 20. Each pressing block 20 abuts against the ratchet tooth 18 on the side near the ratchet tooth 18.

[0034] Furthermore, by Figures 1 to 5 As shown, in order to increase the overall sealing performance of the device, an operating ring 21 is fixedly installed in the middle of the power sleeve 5. Multiple anti-slip protrusions 22 are fixedly connected to the outer side of the operating ring 21. Sealing rubber 23 is provided on both the left and right sides of the operating ring 21. A sliding groove is opened on the upper and lower sides of the adjustment chamber 1. Each pressing block 20 slides up and down in the corresponding sliding groove.

[0035] In use, when the first measuring scale 4 needs to be extended, the pressing block 20 can be pressed. The pressing block 20 drives the ratchet 18 to rotate, causing each ratchet 18 to disengage from the ratchet 17. At this time, under the action of the first spring 9, the first spring 9 will drive the power sleeve 5 to rotate, thereby allowing the first measuring scale 4 to extend. When the length of the first measuring scale 4 needs to be adjusted or the first measuring scale 4 needs to be retracted after measurement, the operating ring 21 can be manually rotated through the anti-slip protrusion 22. The operating ring 21 drives the power sleeve 5 and each ratchet 17 to rotate, causing the first spring 9 to store power. At this time, under the action of the pawl and the return spring 19, the power sleeve 5 and the operating ring 21 will not rotate in the opposite direction, causing the first spring 9 to unload until the first measuring scale 4 is retracted into the corresponding first storage box 2 or second storage box 3. Since the pressing block 20 is located on the outside of the adjustment chamber 1, the sealing rubber 23 can reduce the gap caused by the contact between the pressing block 20 and the ratchet 18.

[0036] It should be noted that the second measuring box 6, the second fixing rod 13, the second spring 14, and the second sleeve 15 are all made of plastic, and their overall weight, plus the second measuring ruler 7, is also relatively light. With the first measuring ruler 4, which has a U-shaped cross-section design and is made of carbon steel, in a straight position, it can support the second measuring box 6 and its internal components.

[0037] When this utility model is in use, in the non-use state, the two first measuring rulers 4 are respectively stored inside the first storage box 2 and the second storage box 3, and the second measuring ruler 7 is stored inside the second measuring box 6. The side walls of the first storage box 2 and the second storage box 3 are provided with U-shaped holes that are adapted to the U-shaped cross-section of the first measuring ruler 4. The ends of the two first measuring rulers 4 away from the power sleeve 5 pass through the corresponding U-shaped holes and are fixedly connected to the corresponding second measuring box 6.

[0038] When it is necessary to measure the patient's leg circumference, medical staff can rotate the operating ring 21 to rotate the power sleeve 5. The power sleeve 5 drives each second measuring ruler 7 to rotate. At this time, the rotation direction of the power sleeve 5 is opposite to the winding direction of the first measuring ruler 4. Under the pushing action of the power sleeve 5, the first measuring ruler 4 will continuously pass through the U-shaped hole. Due to the shape design of the U-shaped hole, the first measuring ruler 4 can remain straight after being extended, supporting the second measuring box 6. Then, the second measuring ruler 7 can be pulled out from the second measuring box 6 to measure the patient's leg circumference.

[0039] This utility model has a novel structure, ingenious design, and simple and convenient operation. This design effectively facilitates the measurement of patients' leg circumference, allowing the first measuring ruler 4 to extend automatically, which is convenient for medical staff to operate and adjust. It also makes the retraction of the first measuring ruler 4 smoother and increases the overall sealing performance of the device.

[0040] Although the present invention 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 the present invention should be included within the protection scope of the present invention.

Claims

1. A leg circumference measuring device, comprising an adjustment chamber, characterized in that: The left and right sides of the adjustment chamber are symmetrically and fixedly connected with a first storage box and a second storage box. The first storage box and the second storage box are each equipped with a first measuring ruler. The adjustment chamber is equipped with a rotatable power sleeve. Each first measuring ruler is wrapped around the outside of the power sleeve. Each first measuring ruler is equipped with a second measuring box at the end away from the power sleeve. The second measuring box is equipped with a retractable second measuring ruler.

2. The leg circumference measuring device according to claim 1, characterized in that: The first measuring ruler is made of carbon steel and has a U-shaped cross-section in its natural state. The second measuring ruler is a tape measure. Both the first and second measuring rulers are equipped with measuring scales.

3. The leg circumference measuring device according to claim 1, characterized in that: The adjustment chamber is fixedly connected to a first fixed rod. The power sleeve is fitted on the outside of the first fixed rod. The outside of the first fixed rod is symmetrically provided with a first spring on each side. The end of each first spring away from the first fixed rod is fixedly connected to the inner side wall of the power sleeve. The winding direction of the first spring is opposite to the winding direction of the first measuring scale.

4. The leg circumference measuring device according to claim 1, characterized in that: The inner walls of the first and second storage boxes are fixedly connected with plastic rings. Each plastic ring has a through hole in the middle. Each first measuring ruler passes through the through hole and is fixedly connected to the corresponding second measuring box. Each through hole has a rotating roller that is rotatably connected to the adjustment chamber.

5. The leg circumference measuring device according to claim 1, characterized in that: The second measuring box has a second fixed rod fixedly connected inside, and a second spring is provided on the outside of the second fixed rod. The second measuring box has a second sleeve rotatably connected inside, and the end of the second spring away from the second fixed rod is fixedly connected to the second sleeve. The second measuring ruler is wound around the outside of the second sleeve, and the side of the second measuring ruler close to the second sleeve is fixedly connected to the second sleeve. The end of the second measuring ruler away from the second sleeve passes through the side wall of the second measuring box and is fixedly connected to a measuring head.

6. The leg circumference measuring device according to claim 1, characterized in that: Both the first and second storage boxes have ratchet wheels fixedly connected to the power sleeve on the side near the adjustment chamber. Each ratchet wheel has ratchet teeth on both its upper and lower sides, and each ratchet tooth is rotatably connected to the power sleeve. Each ratchet tooth has a return spring on the side away from the ratchet wheel. Each adjustment chamber has a pressing block slidably connected to its upper and lower sides, and each pressing block abuts against the ratchet tooth on the side near the ratchet tooth.

7. A leg circumference measuring device according to claim 6, characterized in that: An operating ring is fixedly fitted in the middle of the power sleeve. Multiple anti-slip protrusions are fixedly connected to the outer side of the operating ring. Sealing rubber is provided on both the left and right sides of the operating ring.

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