Knee joint movement measurer

Abstract

The utility model discloses a knee joint activity measurer, relates to medical instrument field, including fixed ruler and movable ruler, fixed ruler and movable ruler hinge joint, fixed ruler and movable ruler outer side are both equipped with mounting groove, the inside of mounting groove is movably equipped with the adjusting subassembly, and the adjusting subassembly is equipped with the fixed ruler and movable ruler hinge joint. And a fixing assembly is movably mounted on the inner side of the adjusting assembly, the adjusting assembly comprises a sliding rod, the sliding rod is movably clamped in the mounting groove, and adjusting holes are formed in the sliding rod at equal intervals. According to the utility model, the fixed ruler and the movable ruler are arranged at the knee joint part of a patient, and the extending length of the adjusting assembly and the position of the fixed assembly are adjusted by operating the adjusting assembly along the mounting groove according to the posture characteristics of different patients; and therefore, patients with different leg lengths and different proportions can be flexibly adjusted and fixed, and the adaptability to different patients is improved.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a knee joint activity measuring device. Background Art

[0002] The knee joint is composed of the lower end of the femur, the upper end of the tibia and the patella. It is the largest and most complex joint in the human body and belongs to the trochlear joint. The patella is connected to the patellar surface of the femur, and the medial and lateral condyles of the femur are opposite to the medial and lateral condyles of the tibia respectively. The synovial layer of the knee joint is the widest and most complex joint in the whole body. It is attached to the periphery of the articular surface of each bone in the joint and covers all structures in the joint except the articular cartilage and meniscus. When the knee joint is damaged, bending movements are required during the rehabilitation process. In order to understand the angle changes during the movement of the knee joint, the range of motion of the knee joint needs to be tested frequently. The following problems exist in the existing technology:

[0003] Existing knee joint movement measuring devices usually measure by taking photos of knee joint movement in conjunction with a protractor. Due to the large differences in the overall leg length and the proportion of the thigh and calf between different patients, they cannot be well adapted to patients with different physical signs when used. Utility Model Content

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A knee joint activity measuring device comprises a fixed ruler and a movable ruler, wherein the fixed ruler and the movable ruler are hingedly connected, and mounting grooves are provided on the outer sides of the fixed ruler and the movable ruler, and an adjusting component is movably installed inside the mounting groove, and a fixed component is movably installed inside the adjusting component.

[0006] A further improvement of the technical solution of the utility model is that: the adjustment component includes a sliding rod, the sliding rod is movably clamped in the interior of the mounting groove, the interior of the sliding rod is equidistantly provided with adjustment holes, the internal threads of the adjustment holes are provided with hand-tightened bolts, the sliding rod is provided with a threaded hole at one end away from the mounting groove, the internal threads of the threaded hole are connected to an adjusting screw, and the fixing component is movably connected to the inner side of the adjusting screw.

[0007] A further improvement of the technical solution of the utility model is that the fixing component includes an arc-shaped plate, a strap is fixedly connected to the front side of the arc-shaped plate, a through opening corresponding to the strap is opened at the rear inside the arc-shaped plate, and a Velcro mother surface and a Velcro child surface are provided on the outer side of the strap.

[0008] A further improvement of the technical solution of the utility model is that: the fixed ruler and the movable ruler are connected by a pin shaft, a movable groove is provided on the inner side of the fixed ruler, a scale mark corresponding to the movable groove is provided on the outer side of the fixed ruler, a convex rod is fixedly connected to the outer side of the movable ruler, the convex rod is movably engaged in the movable groove, and an arrow is provided on the outer side of the convex rod.

[0009] A further improvement of the technical solution of the utility model is that: fixing holes corresponding to the hand-tightening bolts are provided inside the fixed ruler and the movable ruler, and the hand-tightening bolts penetrate the adjustment holes and are connected to the fixing holes.

[0010] A further improvement of the technical solution of the utility model is that: the Velcro sub-surface is arranged on the outer side of the Velcro main surface.

[0011] A further improvement of the technical solution of the utility model is that a soft pad is fixedly connected to the inner side of the arc-shaped plate.

[0012] A further improvement of the technical solution of the utility model is that: the arrow is arranged in the direction of the scale mark.

[0013] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0014] The utility model provides a knee joint activity measuring device, which arranges a fixed ruler and a movable ruler at the knee joint of a patient, and adjusts the extended length of the adjusting component and the position of the fixing component by operating the adjusting component along the installation groove according to the body characteristics of different patients, thereby flexibly adjusting and fixing the patient with different leg lengths and proportions, thereby improving the adaptability to different patients.

[0015] The utility model provides a knee joint activity measuring device, which can quickly measure the range of motion of the patient's knee joint by rotating the movable ruler along the fixed ruler when the patient moves the knee joint after wearing the device, so that medical staff can intuitively observe and record the range of motion of the patient's knee joint, effectively improve the detection efficiency of the range of motion of the knee joint, and ensure the accuracy of the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a knee joint activity measuring device of the present utility model;

[0017] Figure 2 It is a structural schematic diagram of the adjustment component of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the fixing assembly of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the scale mark of the utility model;

[0020] Figure 5 It is a schematic diagram of the connection structure of the fixed ruler and the movable ruler of the utility model.

[0021] In the figure: 1. fixed ruler; 11. movable groove; 12. scale mark; 2. movable ruler; 21. convex rod; 22. arrow; 3. mounting groove; 4. adjustment assembly; 41. sliding rod; 42. adjustment hole; 43. hand screw; 44. threaded hole; 45. adjustment screw; 5. fixed assembly; 51. arc plate; 52. strap; 53. through port; 54. cushion; 55. Velcro mother surface; 56. Velcro sub surface. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below:

[0023] like Figures 1 to 5 As shown, the utility model provides a knee joint activity measuring device, comprising a fixed ruler 1 and a movable ruler 2, the fixed ruler 1 and the movable ruler 2 are hingedly connected, the outer sides of the fixed ruler 1 and the movable ruler 2 are provided with mounting grooves 3, the interior of the mounting grooves 3 is movably installed with an adjusting component 4, and the inner side of the adjusting component 4 is movably installed with a fixed component 5.

[0024] By arranging the fixed ruler 1 and the movable ruler 2 at the knee joint of the patient, and by operating the adjustment component 4 along the installation groove 3 according to the body characteristics of different patients to adjust the extended length of the adjustment component 4 and the position of the fixed component 5, it is convenient to flexibly adjust and fix patients with different leg lengths and proportions, thereby improving the adaptability to different patients. At the same time, by hinged arrangement between the fixed ruler 1 and the movable ruler 2, the patient moves the knee joint after wearing it, and the movable ruler 2 is rotated along the fixed ruler 1 to quickly measure the angle, which is convenient for medical staff to intuitively observe and record the range of motion of the patient's knee joint, effectively improving the detection efficiency of the range of motion of the knee joint, and ensuring the accuracy of the detection result.

[0025] like Figure 2 and Figure 3 As shown, the adjustment component 4 includes a sliding rod 41, which is movably clamped in the interior of the mounting groove 3. Adjustment holes 42 are equidistantly provided inside the sliding rod 41, and hand bolts 43 are installed on the internal threads of the adjustment holes 42. A threaded hole 44 is provided at one end of the sliding rod 41 away from the mounting groove 3, and an adjustment screw 45 is connected to the internal threads of the threaded hole 44. The fixing component 5 is movably connected to the inner side of the adjustment screw 45.

[0026] The fixing assembly 5 includes an arc plate 51 , a strap 52 is fixedly connected to the front side of the arc plate 51 , a through hole 53 corresponding to the strap 52 is opened at the rear inside the arc plate 51 , and a Velcro mother surface 55 and a Velcro sub-surface 56 are provided on the outer side of the strap 52 .

[0027] According to the patient's body characteristics, the hand-tightening bolt 43 is removed and the sliding rod 41 is slid outward along the installation groove 3 to drive the fixing assembly 5 to extend outward so as to be adjusted to a suitable patient's leg. The connection between the fixed ruler 1 and the movable ruler 2 is set on the outside of the knee joint, and the adjusting screw 45 is rotated to move inward and outward along the threaded hole 44, and the fixing assembly 5 is driven to move by the adjusting screw 45. The arc plates 51 on the fixed ruler 1 and the movable ruler 2 are respectively fitted to the thigh and calf of the patient, and the strap 52 is wrapped around the patient's leg and passed through the through hole 53, so that the strap 52 is folded and the Velcro sub-surface 56 is bonded to the Velcro mother surface 55 to fix the patient's leg, thereby facilitating flexible adjustment according to patients with different leg lengths and proportions, thereby improving the adaptability to different patients.

[0028] like Figure 4 and Figure 5 As shown, the fixed ruler 1 and the movable ruler 2 are connected by a pin shaft, a movable groove 11 is provided on the inner side of the fixed ruler 1, and a scale mark 12 corresponding to the movable groove 11 is provided on the outer side of the fixed ruler 1. A convex rod 21 is fixedly connected to the outer side of the movable ruler 2, and the convex rod 21 is movably engaged in the movable groove 11, and an arrow 22 is provided on the outer side of the convex rod 21.

[0029] By rotating the movable ruler 2 along the fixed ruler 1, the convex rod 21 and the arrow 22 are driven to rotate along the movable groove 11, and the knee joint movement angle is known by the position of the scale mark 12 pointed by the arrow 22, so that the medical staff can intuitively observe and record the patient's knee joint movement, effectively improve the detection efficiency of the knee joint movement, and ensure the accuracy of the detection result.

[0030] like Figure 2 As shown, the interiors of the fixed ruler 1 and the movable ruler 2 are both provided with fixing holes corresponding to the hand-tightening bolts 43 , and the hand-tightening bolts 43 penetrate the adjustment holes 42 and are connected to the fixing holes.

[0031] By setting the fixing hole, the hand-tightened bolt 43 is operated to pass through the adjustment hole 42 and is located in the fixing hole, so that the extended length of the sliding rod 41 can be adjusted to improve the adaptability to different patients.

[0032] like Figure 3 As shown, the Velcro sub-surface 56 is arranged on the outer side of the Velcro main surface 55.

[0033] The strap 52 is located outside the patient's leg and passes through the through hole 53 to fold the strap 52 and adhere the Velcro sub-surface 56 to the Velcro sub-surface 56, so as to facilitate fixing the fixing component 5 to the patient's calf and thigh.

[0034] like Figure 3 As shown, a cushion 54 is fixedly connected to the inner side of the arc plate 51 .

[0035] The soft pad 54 reduces the discomfort caused by the contact between the curved plate 51 and the patient's legs.

[0036] like Figure 5 As shown, the arrow 22 is arranged in the direction of the scale mark 12 .

[0037] The arrow 22 is arranged toward the scale mark 12 , and the arrow 22 is driven to move by the protruding rod 21 , so that measurement and recording can be performed according to the pointing position of the arrow 22 on the scale mark 12 .

[0038] The working principle of the knee joint activity measuring device will be described in detail below.

[0039] like Figures 1 to 5 As shown, according to the patient's body characteristics, the hand-tightened bolt 43 is removed and the sliding rod 41 is slid outward along the installation groove 3 to drive the fixing assembly 5 to extend outward so as to be adjusted to a suitable patient's leg. The connection between the fixed ruler 1 and the movable ruler 2 is set at the outside of the knee joint, and the adjusting screw 45 is rotated to move inward and outward along the threaded hole 44, and the fixing assembly 5 is moved by the adjusting screw 45. The arc plates 51 on the fixed ruler 1 and the movable ruler 2 are respectively fitted to the thigh and calf of the patient, and the strap 52 is wrapped around the patient's leg and passed through the through hole 53, so that the strap 52 is folded and the Velcro sub-surface 56 is bonded to the Velcro mother surface 55, and firmly fixed to the patient's leg. The patient's knee joint is bent to drive the movable ruler 2 to rotate clockwise along the fixed ruler 1, and the convex rod 21 is driven by the movable ruler 2 to slide along the movable groove 11, and the measurement data is obtained by observing the position where the arrow 22 points to the scale mark 12 and reading.

[0040] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A knee joint activity measuring device, comprising a fixed ruler (1) and a movable ruler (2), characterized in that: The fixed ruler (1) and the movable ruler (2) are hingedly connected. The outer sides of the fixed ruler (1) and the movable ruler (2) are both provided with mounting grooves (3). An adjusting component (4) is movably installed inside the mounting groove (3). A fixed component (5) is movably installed inside the adjusting component (4). The adjusting component (4) comprises a sliding rod (41). The sliding rod (41) is movably clamped inside the mounting groove (3). Adjustment holes (42) are equidistantly provided inside the sliding rod (41). Hand-tightening bolts (43) are installed on the inner threads of the adjustment holes (42). A threaded hole (44) is provided at one end of the sliding rod (41) away from the mounting groove (3); an adjusting screw (45) is connected to the internal thread of the threaded hole (44); the fixing assembly (5) is movably connected to the inner side of the adjusting screw (45); the fixing assembly (5) comprises an arc plate (51); a strap (52) is fixedly connected to the front side of the arc plate (51); a through hole (53) corresponding to the strap (52) is provided at the rear inside the arc plate (51); and a Velcro mother surface (55) and a Velcro child surface (56) are provided on the outer side of the strap (52).

2. A knee joint activity measuring device according to claim 1, characterized in that: The fixed ruler (1) and the movable ruler (2) are connected via a pin shaft; a movable groove (11) is provided on the inner side of the fixed ruler (1); a scale mark (12) corresponding to the movable groove (11) is provided on the outer side of the fixed ruler (1); a convex rod (21) is fixedly connected to the outer side of the movable ruler (2); the convex rod (21) is movably engaged in the movable groove (11); and an arrow (22) is provided on the outer side of the convex rod (21).

3. A knee joint activity measuring device according to claim 1, characterized in that: The fixed ruler (1) and the movable ruler (2) are both provided with fixing holes corresponding to the hand-tightening bolts (43), and the hand-tightening bolts (43) penetrate the adjustment holes (42) and are connected to the fixing holes.

4. A knee joint activity measuring device according to claim 1, characterized in that: The Velcro sub-surface (56) is arranged on the outer side of the Velcro main surface (55).

5. A knee joint activity measuring device according to claim 1, characterized in that: A soft pad (54) is fixedly connected to the inner side of the arc-shaped plate (51).

6. A knee joint activity measuring device according to claim 2, characterized in that: The arrow (22) is arranged in the direction of the scale mark (12).

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