Leg circumference combined measuring scale for pre-evaluating lower limb venous thrombosis

Abstract

The utility model discloses a leg circumference combined measuring scale for pre-evaluating venous thrombosis of lower limbs, which comprises a positioning component, a measuring component and a measuring component, the length measuring assembly comprises a rotating column and a length measuring ruler, the rotating column is fixedly arranged at the top of the positioning assembly in the vertical direction, and one end of the length measuring ruler is rotationally connected with the rotating column in a sleeving mode; the leg circumference measuring assembly comprises a sliding seat and a leg circumference measuring ruler, the sliding seat is in sliding connection with the length measuring ruler in the length direction of the length measuring ruler, one end of the leg circumference measuring ruler is connected with the sliding seat, and the extending direction of the leg circumference measuring ruler is perpendicular to the length direction of the length measuring ruler. The leg circumference combined measuring scale is simple in structure, convenient to operate and low in equipment cost.

Description

Technical Field

[0001] The utility model relates to medical tools, in particular to a leg circumference combined measuring ruler for pre - evaluating lower limb venous thrombosis. Background Art

[0002] Deep vein thrombosis is a disease in which blood flow in deep veins is slow after trauma or long - term bed rest, coagulation disorders form clots, block the venous lumen, and lead to venous return. The thrombus detachment forms pulmonary embolism and is fatal, which is a serious complication. Early detection and early treatment are the keys. Usually, a leg circumference combined measuring ruler is used to measure and record the leg circumference at the positions 10 - 15 cm above and below the patella of the patient every day. By comparing the data before and after, combined with ultrasound, etc., the occurrence of lower limb venous thrombosis can be early evaluated and predicted in time, providing a basis for clinical examination and diagnosis.

[0003] A leg circumference measuring ruler in the prior art fixes the detection ruler at the patient's knee through a knee positioning belt. Upper and lower ends of the knee positioning belt are respectively connected with a scale for determining the measured position of the patient's leg circumference. End parts of the two scales are respectively connected with a thigh circumference measuring device and a calf circumference measuring device for measuring the leg circumference. However, when medical staff measure the leg circumference of the patient, they also measure the measurement positions above and below the patella separately. The leg circumference measuring ruler is provided with two scales and two groups of leg circumference measuring devices, resulting in a complex structure of the measuring ruler, high equipment cost, and inconvenient operation when measuring the leg circumference. Summary of the Utility Model

[0004] In view of the above - mentioned defects or deficiencies in the prior art, it is expected to provide a leg circumference combined measuring ruler for pre - evaluating lower limb venous thrombosis, which has a simple structure, is convenient to operate, and has a low equipment cost.

[0005] A leg circumference combined measuring ruler for pre - evaluating lower limb venous thrombosis provided by the utility model includes:

[0006] A positioning component for fixing at the patella of the leg;

[0007] A length measuring component including a rotating column and a length measuring ruler. The rotating column is fixedly arranged at the top of the positioning component in the vertical direction, and one end of the length measuring ruler is rotatably sleeved with the rotating column;

[0008] A leg circumference measuring component including a sliding seat and a leg circumference measuring ruler. The sliding seat is slidably connected with the length measuring ruler along the length direction of the length measuring ruler. One end of the leg circumference measuring ruler is connected with the sliding seat, and the extending direction of the leg circumference measuring ruler is perpendicular to the length direction of the length measuring ruler.

[0009] Further, a rotating ring is provided at the end of the length measuring ruler sleeved on the rotating column. The rotating ring is rotatably sleeved on the rotating column. An arc-shaped limiting groove is formed in the side surface of the rotating column along its circumferential direction. A limiting block matching the arc-shaped limiting groove is convexly provided inwardly on the rotating ring;

[0010] The two ends of the arc-shaped limiting groove are respectively a first end and a second end. When the limiting block abuts against the first end of the arc-shaped limiting groove, the length measuring ruler is perpendicular to the positioning component along the first direction;

[0011] When the limiting block abuts against the second end of the arc-shaped limiting groove, the length measuring ruler is perpendicular to the positioning component along the second direction;

[0012] The included angle between the first direction and the second direction is 180°.

[0013] Further, a through hole is formed in the rotating ring, and a fixing screw penetrates through the through hole. First threaded holes and second threaded holes are symmetrically formed in the rotating column along its circumferential direction;

[0014] When the limiting block abuts against the first end of the arc-shaped limiting groove, the fixing screw is threadedly connected to the first threaded hole;

[0015] When the limiting block abuts against the second end of the arc-shaped limiting groove, the fixing screw is threadedly connected to the second threaded hole.

[0016] Further, the positioning component includes a positioning block and a first elastic band. The rotating column is arranged on the top of the positioning block;

[0017] One end of the first elastic band is fixedly connected to the positioning block, and the other end is uniformly provided with a plurality of button holes along its length direction. A button matching the button holes is provided at one end of the positioning block away from the first elastic band through a first connecting band.

[0018] Further, two buttons are provided.

[0019] Further, a fixing component is provided at one end of the length measuring ruler away from the positioning component. The fixing component includes a fixing block and a second elastic band. One end of the second elastic band is fixedly connected to the fixing block, and the other end is uniformly provided with a plurality of button holes along its length direction. A button matching the button holes is provided at one end of the fixing block away from the second elastic band through a second connecting band.

[0020] Further, silica gel pads are provided at the bottoms of the positioning block and the fixing block.

[0021] Further, a sliding groove is formed in the sliding seat, and the length measuring ruler is arranged in the sliding groove and is slidably connected with the sliding groove.

[0022] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0023] The present utility model includes a positioning component, a length measuring component and a leg circumference measuring component. When measuring the leg circumference of a patient, first fix the positioning component at the patella of the patient's leg to prevent the measuring ruler from shaking during subsequent measurements. Then rotate the length measuring ruler so that the length measuring ruler is perpendicular to the positioning component. Subsequently, drive the leg circumference measuring ruler to the measuring position above the patella through the sliding seat, and measure the thigh circumference of the patient through the leg circumference measuring ruler. The positioning component facilitates the positioning and fixation of the patella position, avoiding the problem that inaccurate measurement results are caused by the shaking of the patient's leg. With the help of the length measuring ruler, it is convenient to determine the leg circumference measuring position, and ensure that the measurement is carried out at the same position during multiple measurements. After the measurement is completed, rotate the length measuring ruler by 180°, move the sliding seat, drive the leg circumference measuring ruler to the measuring position below the patella, and measure the calf circumference of the patient through the leg circumference measuring ruler. The measurement of the upper and lower leg circumferences of the patient's patella can be completed by a set of length measuring rulers and a set of leg circumference measuring rulers. The device has a simple structure, is convenient to operate, and has a low cost.

[0024] It should be understood that the content described in the utility model content part is not intended to limit the key or important features of the embodiments of the present utility model, nor is it used to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objects and advantages of the present utility model will become more obvious:

[0026] Figure 1 is a structural schematic diagram of the present utility model;

[0027] Figure 2 is Figure 1 a cross-sectional view at A in

[0028] Figure 3 is a structural schematic diagram of the length measuring ruler perpendicular to the positioning component along the second direction;

[0029] Figure 4 is a structural schematic diagram of the rotating column;

[0030] Figure 5 is a cross-sectional view of the rotating column;

[0031] Figure 6 is a structural schematic diagram of the leg circumference measuring component;

[0032] Reference numerals in the figure: 1, positioning component; 2, length measuring component; 3, leg circumference measuring component; 4, fixing component; 5, silicone pad;

[0033] 11, positioning block; 12, first elastic band;

[0034] 21, rotating column; 22, length measuring ruler;

[0035] 31, sliding seat; 32, leg circumference measuring ruler;

[0036] 41, fixing block; 42, second elastic band;

[0037] 211, arc-shaped limiting groove; 212, first threaded hole; 213, second threaded hole;

[0038] 221, limiting block; 222, fixing screw;

[0039] 2111, first end; 2112, second end;

[0040] a, first direction; b, second direction. Detailed implementation manners

[0041] The following further elaborates on the present utility model in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are merely used to explain the relevant utility model and do not limit the utility model. Additionally, it should be noted that for the convenience of description, only the parts related to the utility model are shown in the drawings.

[0042] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The following will detail the present utility model with reference to the drawings and embodiments.

[0043] Please refer to Figure 1, an embodiment of the present utility model provides a leg circumference combined measuring ruler for pre-evaluating lower limb venous thrombosis, which is used to measure the leg circumferences 15 cm above the upper edge of the patient's patella and 10 cm below the lower edge of the patella. This application includes a positioning component 1, a length measuring component 2, and a leg circumference measuring component 3. Among them, the positioning component 1 is used to be fixed at the middle position of the patient's patella on the leg, which facilitates the fixation of the measuring ruler, avoids inaccurate measurement results caused by the shaking of the patient's leg during measurement, and also facilitates the subsequent positioning of the patella by medical staff without having to re-determine the patella position every time; the length measuring component 2 includes a rotating column 21 and a length measuring ruler 22. The rotating column 21 is fixedly arranged vertically at the top of the positioning component 1. One end of the length measuring ruler 22 is rotatably sleeved on the rotating column 21. The length measuring ruler 22 is selected as a rigid scale, which is convenient for medical staff to determine the measurement positions (15 cm above the upper edge of the patella, 10 cm below the lower edge of the patella), ensuring that multiple measurements can be carried out at the same position on the leg; the leg circumference measuring component 3 includes a sliding seat 31 and a leg circumference measuring ruler 32. The sliding seat 31 is slidably connected to the length measuring ruler 22 along the length direction of the length measuring ruler 22. One end of the leg circumference measuring ruler 32 is connected to the sliding seat 31. The extending direction of the leg circumference measuring ruler 32 is perpendicular to the length direction of the length measuring ruler 22. The length range of the length measuring ruler 22 can be set to 20 - 30 cm, and the sliding seat 31 is slidably connected to the length measuring ruler 22, which is convenient for adjusting the measurement position of the leg circumference according to the needs of the patient; when measuring the leg circumference of the patient, first fix the positioning component 1 at the middle position of the patient's patella, then rotate the length measuring ruler 22 so that the length measuring ruler 22 is located on the patient's thigh and is perpendicular to the positioning component 1. Through the length measuring ruler 22, find the leg circumference measurement position (15 cm above the upper edge of the patella) on the patient's thigh. Adjust the leg circumference measuring ruler 32 to the thigh leg circumference measurement position through the sliding seat 31, and pull one end of the leg circumference measuring ruler 32 to measure and record the thigh leg circumference of the patient. After measuring the thigh leg circumference above the patient's patella, rotate the length measuring ruler 22, and the length measuring ruler 22 rotates 180 degrees around the rotating column. Determine the calf measurement position (10 cm below the lower edge of the patella) through the length measuring ruler 22. Move the leg circumference measuring ruler 32 to the calf leg circumference measurement position below the patella through the sliding seat 31, and measure and record the calf leg circumference below the patella; this application can complete the measurement of the leg circumferences above and below the patient's patella with a set of length measuring rulers 22 and a set of leg circumference measuring rulers 32. The device has a simple structure, is convenient to operate, and has a low cost.

[0044] As Figures 2 to 5 shown, preferably, a rotating ring is provided at the end of the length measuring ruler 22 sleeved on the rotating column 21. The rotating ring is rotatably sleeved on the rotating column 21. An arc-shaped limiting groove 211 is formed on the side surface of the rotating column 21 along its circumferential direction. The rotating ring protrudes inwardly with a limiting block 221 that matches the arc-shaped limiting groove 211;

[0045] The two ends of the arc-shaped limiting groove 211 are divided into a first end portion 2111 and a second end portion 2112. When the limiting block 221 abuts against the first end portion 2111 of the arc-shaped limiting groove 211, the length measuring ruler 22 is perpendicular to the positioning assembly 1 along the first direction;

[0046] When the limiting block 221 abuts against the second end portion 2112 of the arc-shaped limiting groove 211, the length measuring ruler 22 is perpendicular to the positioning assembly 1 along the second direction;

[0047] The included angle between the first direction and the second direction is 180°.

[0048] In this embodiment, taking the positioning assembly 1 as the reference point, the first direction a is the direction in which the length measuring ruler 22 extends downward, the second direction b is the direction in which the length measuring ruler 22 extends upward, and the included angle between the first direction a and the second direction b is 180 degrees;

[0049] The rotating column 21 is provided with an arc-shaped limiting groove 211 along its circumferential direction. The two end portions of the arc-shaped limiting groove 211 are divided into a first end portion 2111 and a second end portion 2112. The included angle between the first end portion 2111 and the second end portion 2112 is 180°. As Figure 2 shown, the first end portion 2111 is the left end of the arc-shaped limiting groove 21, and the second end portion 2112 is the right end of the arc-shaped limiting groove 21;

[0050] When measuring the thigh circumference, rotate the length measuring ruler 22 until the limiting block 221 on the length measuring ruler 22 abuts against the first end portion 2111 on the arc-shaped limiting groove 211. At this time, the length measuring ruler 22 rotates to the thigh, and the length measuring ruler 22 is perpendicular to the positioning assembly 1 along the first direction a, ensuring that the distance from the measurement position to the patella is accurate. Take 15 cm above the upper edge of the patella as the measurement position, and measure the thigh circumference of the patient at this position; after measuring the thigh circumference, rotate the length measuring ruler 22, and the limiting block 221 slides in the arc-shaped limiting groove 211 until the limiting block 221 abuts against the second end portion 2112 in the arc-shaped limiting groove 211. At this time, the length measuring ruler 22 rotates to the calf, and the length measuring ruler 22 is perpendicular to the positioning assembly 1 along the second direction b. Take 10 cm below the lower edge of the patella as the measurement position, and measure the calf circumference of the patient at this position. Through the setting of the limiting block 221 and the arc-shaped limiting groove 211, it is convenient to limit the rotation angle of the length measuring ruler 22, so that the length measuring ruler 22 accurately rotates to a position perpendicular to the positioning assembly 1, avoiding deviation of the leg circumference measurement position caused by the angle deviation of the length measuring ruler 22, ensuring that the measurement position is the same position during multiple measurements, and improving the measurement accuracy.

[0051] As Figure 2 and Figure 3As shown, preferably, through holes are formed in the rotating ring, and fixing screws 222 penetrate through the through holes. First threaded holes 212 and second threaded holes 213 are symmetrically formed in the circumferential direction of the rotating column 21.

[0052] When the limiting block 221 abuts against the first end 2111 of the arc-shaped limiting groove 211, the fixing screw 222 is threadedly connected to the first threaded hole 212.

[0053] When the limiting block 221 abuts against the second end 2112 of the arc-shaped limiting groove 211, the fixing screw 222 is threadedly connected to the second threaded hole 213.

[0054] In this embodiment, both the first threaded hole 212 and the second threaded hole 213 are arranged above the arc-shaped limiting groove 211, and the first threaded hole 212 and the second threaded hole 213 are symmetrically arranged.

[0055] When the limiting block 211 abuts against one end of the arc-shaped limiting groove 211, the fixing screw 22 passes through the through hole and is threadedly connected to the first threaded hole 212 or the second threaded hole 213, fixing the length measuring ruler 22 and the rotating column 21 to prevent the length measuring ruler from shaking when measuring the thigh circumference.

[0056] As Figure 1 shown, preferably, the positioning assembly 1 includes a positioning block 11 and a first elastic band 12, and the rotating column 21 is arranged on the top of the positioning block 11.

[0057] One end of the first elastic band 12 is fixedly connected to the positioning block 11, and a plurality of buttonholes are evenly arranged at the other end along its length direction. A button matching the buttonholes is arranged at one end of the positioning block 11 away from the first elastic band 12 through a first connecting band.

[0058] In this embodiment, the bottom of the positioning block 11 is set to be U-shaped, which can well fit the patient's leg and fix the positioning block 11 at the middle position of the patient's patella. Pull the free end of the first elastic band 12, wind the first elastic band 12 around the leg in a circle, and fix it through the button and the buttonholes. The arrangement of a plurality of buttons is convenient for patients with different thigh circumferences, and the first elastic band 12 has elasticity, making the positioning block more stable.

[0059] As Figure 1 shown, preferably, two buttons are provided to improve the stability after the first elastic band 12 is wound.

[0060] As Figure 1As shown, preferably, a fixing component 4 is provided at one end of the length measuring ruler 22 away from the positioning component 1. The fixing component 4 includes a fixing block 41 and a second elastic band 42. One end of the second elastic band 42 is fixedly connected to the fixing block 41, and the other end is provided with a plurality of buttonholes evenly along its length direction. A button matching the buttonholes is provided at one end of the fixing block 41 away from the second elastic band 42 through a second connecting band.

[0061] In this embodiment, the bottom of the fixing block 41 is also U-shaped, so that the fixing block 41 can fit well with the patient's leg. When measuring the thigh circumference of the patient, the fixing block 41 is fixed on the thigh through the second elastic band 42. When measuring the calf circumference of the patient, the fixing block 41 is fixed on the calf through the second elastic band 42. Through the cooperation between the fixing component 4 and the positioning component 1, the stability of the length measuring ruler 22 fixed on the patient's leg can be improved, and the deflection of the length measuring ruler 22 caused by the patient's shaking can be avoided.

[0062] As Figure 1 shown, preferably, silicone pads 5 are provided at the bottoms of the positioning block 11 and the fixing block 41. To avoid the edges of the positioning block 11 and the fixing block 41 from cutting the patient's skin.

[0063] As Figure 6 shown, preferably, a sliding groove is formed in the sliding seat 31, and the length measuring ruler 22 is arranged in the sliding groove and is slidably connected to the sliding groove. The bottom of the sliding seat 31 is U-shaped and can fit well with the patient's leg. The leg circumference measuring ruler 32 connected to one end of the sliding seat 31 is a flexible ruler, which is convenient for measuring the thigh and calf circumferences of the patient.

[0064] Working process:

[0065] When measuring the leg circumference of a patient, first place the positioning block 11 at the middle position of the patient's patella, then fix the positioning block 11 with the first elastic band 12. Then rotate the length measuring ruler 22 so that the length measuring ruler 22 is located on the patient's thigh and is perpendicular to the positioning component 1. Fix the length measuring ruler 22 and the rotating column 21 with the fixing screw 222. Then fix the other end of the length measuring ruler 22 with the second elastic band 42. After the length measuring ruler 22 is fixed, find the leg circumference measurement position (15 cm above the patella) on the patient's thigh through the scale of the length measuring ruler 22. Pull the sliding seat 31 to move and adjust the leg circumference measuring ruler 32 to the thigh leg circumference measurement position, and pull the free end of the leg circumference measuring ruler 32 to wind around the thigh measurement position of the patient for one circle to make a measurement record. After measuring the thigh leg circumference above the patient's patella, remove the fixing screw 222, loosen the second elastic band 42, and rotate the length measuring ruler 22. The length measuring ruler 22 rotates 180 degrees around the rotating column, and the length measuring ruler 22 rotates above the calf. Fix the length measuring ruler 22 and the rotating column 21 again through the fixing screw 222, and fix the other end of the length measuring ruler 22 with the second elastic band 42 again. Then determine the calf measurement position (10 cm below the patella) below the patella through the scale on the length measuring ruler 22. Move the leg circumference measuring ruler 32 to the calf leg circumference measurement position below the patella through the sliding seat 31, and measure and record the calf leg circumference below the patella; with a set of length measuring rulers 22 and a set of leg circumference measuring rulers 32 in this application, the measurement of the leg circumferences above and below the patient's patella can be completed. The device has a simple structure, is convenient to operate, and has a low cost.

[0066] In the description of this specification, terms such as "connection", "installation", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0067] In the description of this specification, the description of terms such as "one embodiment", "some embodiments", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0068] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A leg circumference combined measuring ruler for pre-evaluation of lower extremity venous thrombosis, characterized in that: include: A positioning component (1) is used for fixing at the patella of the leg; A length measuring assembly (2) comprises a rotating column (21) and a length measuring ruler (22), wherein the rotating column (21) is fixedly arranged on the top of the positioning assembly (1) in a vertical direction, and one end of the length measuring ruler (22) is rotatably sleeved with the rotating column (21); The leg circumference measuring assembly (3) comprises a sliding seat (31) and a leg circumference measuring ruler (32), wherein the sliding seat (31) is slidably connected to the length measuring ruler (22) along the length direction of the length measuring ruler (22), one end of the leg circumference measuring ruler (32) is connected to the sliding seat (31), and the extension direction of the leg circumference measuring ruler (32) is perpendicular to the length direction of the length measuring ruler (22).

2. A leg circumference combined measuring ruler for predicting lower extremity venous thrombosis according to claim 1, characterized in that: The length measuring ruler (22) is sleeved on the end of the rotating column (21) and is provided with a rotating ring, the rotating ring is rotatably sleeved with the rotating column (21), the side surface of the rotating column (21) is provided with an arc-shaped limiting groove (211) along its circumference, and the rotating ring is provided with a limiting block (221) protruding inwardly and matching the arc-shaped limiting groove (211); The two ends of the arc-shaped limiting groove (211) are divided into a first end (2111) and a second end (2112); when the limiting block (221) abuts against the first end (2111) of the arc-shaped limiting groove (211), the length measuring ruler (22) is perpendicular to the positioning assembly (1) along a first direction; When the limiting block (221) abuts against the second end (2112) of the arc-shaped limiting groove (211), the length measuring ruler (22) is perpendicular to the positioning assembly (1) along the second direction; The angle between the first direction and the second direction is 180°.

3. The leg circumference combined measuring ruler for predicting lower extremity venous thrombosis according to claim 2, characterized in that: The rotating ring is provided with a through hole, a fixing screw (222) passes through the through hole, and the rotating column (21) is provided with a first threaded hole (212) and a second threaded hole (213) symmetrically along its circumference; When the limiting block (221) abuts against the first end (2111) of the arc-shaped limiting groove (211), the fixing screw (222) is threadedly connected in the first threaded hole (212); When the limiting block (221) abuts against the second end (2112) of the arc-shaped limiting groove (211), the fixing screw (222) is threadedly connected in the second threaded hole (213).

4. The leg circumference combined measuring ruler for predicting lower extremity venous thrombosis according to claim 1, characterized in that: The positioning assembly (1) comprises a positioning block (11) and a first elastic band (12), and the rotating column (21) is arranged on the top of the positioning block (11); One end of the first elastic band (12) is fixedly connected to the positioning block (11), and the other end is evenly provided with a plurality of button holes along its length direction; and the end of the positioning block (11) away from the first elastic band (12) is provided with buttons matching the button holes via a first connecting band.

5. The leg circumference combined measuring ruler for predicting lower extremity venous thrombosis according to claim 4, characterized in that: There are two buttons.

6. The leg circumference combined measuring ruler for predicting lower extremity venous thrombosis according to claim 4, characterized in that: A fixing assembly (4) is arranged at one end of the length measuring ruler (22) away from the positioning assembly (1), the fixing assembly (4) comprising a fixing block (41) and a second elastic band (42), one end of the second elastic band (42) being fixedly connected to the fixing block (41), and the other end of the second elastic band (42) being evenly arranged with a plurality of button holes along its length direction, and buttons matching the button holes are arranged at one end of the fixing block (41) away from the second elastic band (42) via a second connecting band.

7. The leg circumference combined measuring ruler for predicting lower extremity venous thrombosis according to claim 6, characterized in that: The bottoms of the positioning block (11) and the fixing block (41) are both provided with silicone pads (5).

8. The leg circumference combined measuring ruler for predicting lower extremity venous thrombosis according to claim 1, characterized in that: A sliding groove is provided in the sliding seat (31), and the length measuring ruler (22) is arranged in the sliding groove and is slidably connected to the sliding groove.

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