Improved protractor

Abstract

The utility model relates to the technical field of medical instruments, and discloses an improved protractor, which comprises a first measuring scale, a protractor is fixedly mounted at one end of the first measuring scale, a first mounting plate is fixedly mounted on the inner wall of the protractor, and inner teeth are fixedly mounted on the inner wall of the first mounting plate. According to the improved protractor, through the arrangement of inner teeth, a clamping block, a clamping spring and a rotating shaft, a medical worker pokes a pointer to pull out the second measuring scale from the first measuring scale when using the improved protractor; meanwhile, a clamping block compresses a clamping spring, so that the clamping block is clamped to the corresponding position of the inner teeth through the clamping spring according to the angle between the first measuring scale and the second measuring scale, and the second measuring scale is limited and fixed; the second measuring scale is fixed through meshing of the clamping blocks and the inner teeth, and the situation that the second measuring scale knocks the medical staff due to random swing, and consequently skin swelling is caused is avoided.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an improved protractor. Background Technology

[0002] An orthopedic goniometer is a medical device used to measure joint angles and assess range of motion, commonly found in orthopedics and rehabilitation medicine. It typically consists of two adjustable arms that can be fixed at the joint to measure changes in angle. Using an orthopedic goniometer helps doctors better assess a patient's joint function, monitor rehabilitation progress, and develop appropriate treatment plans.

[0003] However, existing improved protractors have the following drawbacks:

[0004] When needed, medical staff need to tighten the fixing bolts to secure the measuring tape, which is a rather cumbersome process.

[0005] Therefore, this utility model provides an improved protractor. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] The technical problem solved by the utility model is to provide an improved protractor that is highly practical, easy to operate, and has a simple structure. This solves the problem mentioned in the background art, where medical personnel need to constantly tighten the fixing bolts to fix the measuring ruler when needed, which is a rather cumbersome process.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model is implemented through the following technical solution: an improved protractor, comprising a first measuring ruler, a protractor fixedly mounted on one end of the first measuring ruler, a first mounting plate fixedly mounted on the inner wall of the protractor, internal teeth fixedly mounted on the inner wall of the first mounting plate, a locking block engaged on one side of the internal teeth, and a locking spring fixedly mounted on one end of the locking block.

[0010] Optionally, a rotating shaft is fixedly installed at one end of the snap-fit ​​spring, and a second mounting plate is fixedly installed on one side of the rotating shaft. The second mounting plate serves to install the rotating shaft and thus the snap-fit ​​spring.

[0011] Optionally, a pointer is fixedly mounted on one end of the second mounting plate, and a second measuring scale is fixedly mounted on the other end of the second mounting plate. The second measuring scale facilitates the measurement of the angle of the patient's lower limb.

[0012] Optionally, a first scale line is provided on one side of the first measuring ruler, which facilitates the measurement of the patient's thigh length.

[0013] Optionally, a second scale line is provided on one side of the second measuring ruler, which facilitates the measurement of the patient's lower leg length.

[0014] Optionally, a third scale line is provided on one side of the protractor, which serves to measure the bending angle between the patient's lower leg and thigh.

[0015] (III) Beneficial Effects

[0016] This utility model provides an improved protractor, which has the following advantages:

[0017] This improved protractor, through the design of internal teeth, a locking block, a locking spring, and a rotating shaft, allows medical personnel to pull the pointer out of the first measuring scale during use. Simultaneously, the locking block compresses the locking spring, which, based on the angle between the first and second measuring scales, engages with the locking block at the corresponding position of the internal teeth, thus limiting and fixing the second measuring scale. After use, the second measuring scale can be stored back into the first measuring scale, and the engagement of the locking block with the internal teeth further secures the second measuring scale, preventing it from swinging randomly and potentially bumping into medical personnel, thus avoiding skin swelling. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal tooth structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the rotating shaft structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the snap-fit ​​spring structure of this utility model.

[0022] In the diagram: 1. First measuring scale; 2. Protractor; 3. First mounting plate; 4. Internal gear; 5. Clamping block; 6. Clamping spring; 7. Rotating shaft; 8. Second mounting plate; 9. Pointer; 10. Second measuring scale; 11. First graduation line; 12. Second graduation line; 13. Third graduation line. 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] Please see Figures 1 to 4 This utility model provides a technical solution: an improved protractor, including a first measuring scale 1, a protractor 2 fixedly mounted at one end of the first measuring scale 1, a first mounting plate 3 fixedly mounted on the inner wall of the protractor 2, internal teeth 4 fixedly mounted on the inner wall of the first mounting plate 3, a locking block 5 engaged on one side of the internal teeth 4, and a locking spring 6 fixedly mounted at one end of the locking block 5. Through the arrangement of the internal teeth 4, the locking block 5, the locking spring 6, and the rotating shaft 7, medical personnel can adjust the second measuring scale by moving the pointer 9 during use. Ruler 10 is pulled out from the first measuring ruler 1. At the same time, the locking block 5 compresses the locking spring 6, so that according to the angle between the first measuring ruler 1 and the second measuring ruler 10, the locking spring 6 locks the locking block 5 into the corresponding position of the internal tooth 4, thereby limiting and fixing the second measuring ruler 10. After use, the second measuring ruler 10 can be stored in the first measuring ruler 1, and the second measuring ruler 10 is fixed by the engagement of the locking block 5 and the internal tooth 4, so as to prevent the second measuring ruler 10 from swinging randomly and bumping into medical staff, thus causing skin swelling.

[0025] A rotating shaft 7 is fixedly installed at one end of the snap-fit ​​spring 6, and a second mounting plate 8 is fixedly installed on one side of the rotating shaft 7. The second mounting plate 8 serves to install the rotating shaft 7 and thus install the snap-fit ​​spring 6.

[0026] A pointer 9 is fixedly installed at one end of the second mounting plate 8, and a second measuring scale 10 is fixedly installed at the other end of the second mounting plate 8. The setting of the second measuring scale 10 facilitates the measurement of the angle of the patient's lower limb.

[0027] The first measuring ruler 1 has a first scale line 11 on one side, which facilitates the measurement of the patient's thigh length.

[0028] The second measuring ruler 10 has a second scale line 12 on one side, which facilitates the measurement of the patient's lower leg length.

[0029] The protractor 2 has a third scale line 13 on one side, which is used to measure the bending angle between the patient's lower leg and thigh.

[0030] In this invention, the working steps of the device are as follows:

[0031] First step: When using the device, the medical staff first moves the pointer 9 to pull the second measuring scale 10 out of the first measuring scale 1. At the same time, the locking block 5 compresses the locking spring 6, so that according to the angle between the first measuring scale 1 and the second measuring scale 10, the locking spring 6 locks the locking block 5 into the corresponding position of the internal teeth 4, thereby limiting and fixing the second measuring scale 10.

[0032] The second step: After use, the second measuring scale 10 can be stored in the first measuring scale 1, and the second measuring scale 10 can be fixed by the engagement of the locking block 5 and the internal teeth 4 to prevent the second measuring scale 10 from swinging randomly and bumping into medical staff, which could cause skin swelling.

[0033] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0034] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An improved protractor, comprising a first measuring scale (1), characterized in that: A protractor (2) is fixedly installed at one end of the first measuring ruler (1). A first mounting plate (3) is fixedly installed on the inner wall of the protractor (2). An internal tooth (4) is fixedly installed on the inner wall of the first mounting plate (3). A locking block (5) is engaged with one side of the internal tooth (4). A locking spring (6) is fixedly installed at one end of the locking block (5).

2. The improved protractor according to claim 1, characterized in that: One end of the snap-fit ​​spring (6) is fixedly mounted with a rotating shaft (7), and a second mounting plate (8) is fixedly mounted on one side of the rotating shaft (7).

3. The improved protractor according to claim 2, characterized in that: A pointer (9) is fixedly mounted on one end of the second mounting plate (8), and a second measuring scale (10) is fixedly mounted on the other end of the second mounting plate (8).

4. The improved protractor according to claim 1, characterized in that: The first scale line (11) is provided on one side of the first measuring ruler (1).

5. An improved protractor according to claim 3, characterized in that: The second measuring scale (10) has a second scale line (12) on one side.

6. The improved protractor according to claim 1, characterized in that: The protractor (2) has a third scale line (13) on one side.

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