Goniometer for detecting tibia torsion

Abstract

The utility model discloses a kind of angle meters for detecting tibia torsion, belong to orthopedics medical detection instrument technical field.The angle meter includes mounting seat, symmetrically arranged measuring claw and angle disc assembly.Measuring claw is linked by engaging tooth, adjustable spacing to adapt to different tibia size;Angle disc integrates level and pointer, and realizes non-radiation, high-precision in-situ measurement in combination with laser pointer.Through medial and lateral reference points of ankle joint, torsion angle is quickly positioned and read, solve the problem of traditional X-ray radiation risk and mechanical tool positioning inaccuracy.The utility model compact structure, convenient operation is applicable to the quick detection of clinical tibia torsion angle.

Description

Technical Field

[0001] This utility model relates to the field of orthopedic medical testing device technology, specifically a radiation-free tibial torsion angle measuring device that combines a mechanical linkage structure with laser positioning, suitable for rapid clinical assessment of tibial torsion deformity. Background Technology

[0002] In existing technologies, clinical measurement of tibial torsion angle mainly relies on X-ray imaging technology, which requires radiation exposure to the patient's lower limbs, posing potential health risks, especially to children or patients who require multiple measurements. In addition, X-ray equipment is expensive and requires professional operation, limiting its application in primary healthcare settings.

[0003] While existing mechanical measuring tools (such as caliper-type angle gauges) can avoid radiation, they generally suffer from the following drawbacks: poor symmetry of the measuring jaws, leading to easy shifting during clamping and resulting in reference point positioning errors; lack of dynamic adjustment mechanisms, making it difficult to adapt to different patients' tibial dimensions; and the lack of horizontal calibration function in the reading device, making it susceptible to operator technique and resulting in low data reliability. The lack of positioning benchmarks and adaptive structures easily leads to measurement errors, especially when the ankle joint is swollen or anatomical landmarks are unclear, making accurate positioning difficult.

[0004] To address the aforementioned problems, this invention proposes an angle measuring instrument that integrates laser positioning, meshing linkage measuring claws, and a horizontal calibration component. Through its mechanical structure, it achieves radiation-free, high-precision measurement, significantly improving the convenience and safety of clinical operations. Utility Model Content

[0005] The purpose of this invention is to provide an angle measuring instrument for detecting tibial torsion, which can solve the problems of high radiation risk and inaccurate positioning of mechanical tools in traditional methods.

[0006] The technical solution of this utility model:

[0007] An angle measuring device for detecting tibial torsion includes:

[0008] The mounting base has an internal mounting cavity;

[0009] Two symmetrically arranged measuring jaws are rotatably connected to a fixed shaft in the mounting cavity via bearings, with their lower ends extending to the bottom of the mounting base. A finger operation hole is opened in the middle of the measuring jaws, and meshing teeth are provided at the top.

[0010] Angle plate assembly, embedded in a placement slot on the front side of the mounting base, includes a mounting plate, a pointer with a level, scales, and a transparent cover;

[0011] The laser pointer is located at the bottom of the mounting cavity, with a cross-shaped beam extending to the bottom of the mounting base.

[0012] Furthermore, the measuring claw has a protrusion on the inner side of the middle part in the opposite direction and a depression on the inner side of the lower end in the opposite direction, forming a tibial clamping space.

[0013] Furthermore, a rotating groove is provided at the bottom of the mounting base to allow the measuring claws to rotate synchronously and adjust the spacing.

[0014] Furthermore, the crosshair of the laser indicator coincides with the clamping line of the two measuring claws, which is used to replace manual marking for positioning.

[0015] Furthermore, the level of the pointer is a bubble-type structure used to calibrate the verticality of the mounting base.

[0016] Furthermore, the mounting base is provided with a switch for turning the laser pointer on or off.

[0017] Furthermore, it also includes a battery for powering the laser pointer; the battery has a charging interface for charging the battery; and the top of the mounting cavity has a through hole for accommodating the charging interface.

[0018] The beneficial effects of this utility model are:

[0019] (1) By using meshing teeth to link the measuring claw, clamping stability and symmetry are achieved, thereby improving measurement accuracy.

[0020] (2) The cross laser is directly projected onto the tibial surface, eliminating the need for manual marking, shortening the detection time, and positioning is achieved directly through the laser-guided light.

[0021] (3) The level is used to calibrate the verticality of the mounting base to avoid reading deviations caused by tilting.

[0022] (4) The radiation-free design reduces the health risks to patients and medical staff and is suitable for repeated testing scenarios. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the angle measuring instrument;

[0024] Figure 2 This is a frontal view of the angle meter (without a transparent cover);

[0025] Figure 3 This is a schematic diagram of the internal structure of the mounting cavity (including measuring claws);

[0026] Figure 4 yes Figure 3 A frontal view diagram;

[0027] Figure 5 This is a schematic diagram of the placement slot;

[0028] Figure 6This is a structural diagram of the angle plate assembly;

[0029] Figure 7 This is a schematic diagram of cross-shaped laser projection positioning. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings.

[0031] Please see Figures 1 to 7 This utility model provides a first embodiment of an angle measuring instrument for detecting tibial torsion, comprising:

[0032] Mounting base 2 has an internal mounting cavity 21 for mounting various components;

[0033] Two symmetrically arranged measuring claws 3 are used to clamp the medial and lateral condyles of the tibia 100. They are rotatably connected to a fixed shaft 33 in the mounting cavity 21 via bearings 32, with their lower ends extending below the mounting base 2. A finger operation hole 31 is provided in the middle of the measuring claw 3 to allow adjustment of the spacing by rotating the measuring claw 3 with a finger during tibia 100 testing. This facilitates clamping of the tibia 100 and can accommodate tibias 100 of different sizes. The top is provided with interlocking teeth 34, ensuring that the opening or closing angle of the two measuring claws 3 is consistent, guaranteeing synchronous movement of the two claws, resulting in accurate measurements and stable rotation of the measuring claws 3 when adjusting the spacing.

[0034] An angle disc assembly, embedded in the placement slot 23 on the front side of the mounting base 2, includes a mounting disc 25, a pointer 26 with a level 28, scale markings, and a transparent cover 27. The angle disc assembly includes a mounting disc 25 with a mounting slot 24 on its front side for mounting the pointer 26. The pointer 26 with a level 28 is installed in the mounting slot 24. The rear inner wall of the mounting slot 24 has scale markings in angles, which, together with the pointer 26, can measure the torsional angle of the tibia 100. The front side of the mounting disc 25 has a transparent cover 27, which protects the components in the mounting slot 24 and allows the pointer 26 to be seen through the transparent cover 27.

[0035] Laser pointer 4 is located at the bottom of mounting cavity 21. The laser beam is cross-shaped, and the cross-shaped laser assists in rapid positioning, reducing errors caused by manual marking. The bottom extends below mounting base 2. The cross-shaped laser beam of laser pointer 4 is directly projected onto the surface of tibia 100, eliminating the need for manual marking, shortening detection time, and allowing positioning directly through the laser beam.

[0036] The working principle of this embodiment is as follows: turn on the laser indicator 4 and project the cross laser onto the patient's tibial surface, aligning the horizontal axis with the target measurement position; insert your finger into the operation hole 31 of the measuring claw 3 and adjust the clamping distance to fit the medial and lateral condyles of the tibia; observe the level 28 and adjust the position of the mounting base 2 so that the bubble in the level 28 is centered to ensure vertical positioning; read the scale value pointed to by the pointer 26, which is the tibial torsion angle.

[0037] Based on the first embodiment, this utility model provides a second embodiment of an angle measuring instrument for detecting tibial torsion, wherein the inner side 35 of the middle part of the measuring claw 3 protrudes in the opposite direction to enhance clamping stability; the inner side 36 of the lower end is recessed in the opposite direction to form a tibial clamping space.

[0038] Based on any of the above embodiments, this utility model provides a third embodiment of an angle measuring instrument for detecting tibial torsion, wherein a rotating groove 22 is provided at the bottom of the mounting base 2 for the measuring claw 3 to rotate synchronously to adjust the spacing.

[0039] Based on any of the above embodiments, this utility model provides a fourth embodiment of an angle measuring instrument for detecting tibial torsion, wherein the cross laser horizontal axis of the laser indicator 4 coincides with the clamping line of the two measuring claws 3, which is used to replace manual marking for positioning.

[0040] Based on any of the above embodiments, this utility model provides a fifth embodiment of an angle measuring instrument for detecting tibial torsion, wherein the level 28 of the pointer 26 has a bubble-type structure and is used to calibrate the verticality of the mounting base 2.

[0041] Based on any of the above embodiments, the present invention provides a sixth embodiment of an angle measuring instrument for detecting tibial torsion, wherein the mounting base 2 is provided with a switch 5 for turning the laser indicator 4 on or off.

[0042] Based on any of the above embodiments, this utility model provides a seventh embodiment of an angle measuring instrument for detecting tibial torsion, which further includes a battery 6 for powering the laser pointer 4; the battery 6 has a charging interface 7 for charging the battery 6; the top of the mounting cavity 21 has a through hole for accommodating the charging interface 7. This allows the battery 6 to be charged directly through the charging interface 7 without replacing the battery.

[0043] The laser pointer, level, and battery in this utility model are all existing technologies, which are already well understood by those skilled in the art, and will not be described in detail here. Moreover, this utility model protects the structural features of an angle measuring instrument for detecting tibial torsion.

[0044] The above description is only a preferred embodiment of the present utility model and should not be construed as a limitation of this application. All equivalent changes and modifications made within the scope of the patent application of the present utility model should be included in the scope of the present utility model.

Claims

1. An angle measuring instrument for detecting tibial torsion, characterized in that, include: Mounting base (2), which has a mounting cavity (21) inside; Two symmetrically arranged measuring claws (3) are rotatably connected to a fixed shaft (33) in the mounting cavity (21) via a bearing (32). The lower end extends to the bottom of the mounting base (2). A finger operation hole (31) is opened in the middle of the measuring claw (3), and meshing teeth (34) are provided on the top. Angle plate assembly, embedded in the placement slot (23) on the front side of the mounting base (2), includes a mounting plate (25), a pointer (26) with a level (28), scale and transparent cover (27); A laser pointer (4) is located at the bottom of the mounting cavity (21), with a cross-shaped beam extending to the bottom of the mounting base (2).

2. The angle measuring instrument for detecting tibial torsion according to claim 1, characterized in that, The measuring claw (3) has a protrusion on the inner side (35) of the middle part in the opposite direction and a depression on the inner side (36) of the lower end in the opposite direction, forming a tibial clamping space.

3. The angle measuring instrument for detecting tibial torsion according to claim 1, characterized in that, The mounting base (2) has a rotating groove (22) at the bottom for the measuring claw (3) to rotate synchronously to adjust the spacing.

4. The angle measuring instrument for detecting tibial torsion according to claim 1, characterized in that, The cross laser axis of the laser indicator (4) coincides with the clamping line of the two measuring claws (3), which is used to replace manual marking for positioning.

5. The angle measuring instrument for detecting tibial torsion according to claim 1, characterized in that, The level (28) of the pointer (26) has a bubble structure and is used to calibrate the verticality of the mounting base (2).

6. The angle measuring instrument for detecting tibial torsion according to claim 1, characterized in that, The mounting base (2) is provided with a switch (5) for turning the laser pointer (4) on or off.

7. The angle measuring instrument for detecting tibial torsion according to claim 1, characterized in that, It also includes a battery (6) for powering the laser pointer (4); the battery (6) has a charging interface (7) for charging the battery (6); the top of the mounting cavity (21) has a through hole for accommodating the charging interface (7).

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