Forearm rotation angle measuring instrument

Abstract

The utility model provides a forearm rotation angle measuring instrument, which comprises a mounting shell and an indicating assembly, the indicating assembly comprises a pointer, a rotating shaft and a gravity hammer, the rotating shaft is rotatably mounted on the mounting shell, the pointer is fixedly connected with the rotating shaft, the pointer is provided with two ends, and the gravity hammer is fixedly connected to one end of the pointer; and in the rotating process of the mounting shell, the gravity hammer enables the pointer to be parallel to the vertical direction. The installation shell provides a grabbing position for a testee, the forearm of the testee rotates to drive the installation shell to rotate, in the rotation process of the installation shell, the pointer is kept vertical due to the acting force of the gravity hammer, and by measuring the rotation angle of the installation shell relative to the pointer, the measurement accuracy of the pointer is improved. And then the rotation angle of the forearm of the testee is measured.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring instruments, in particular to a forearm rotation angle measuring instrument. Background Art

[0002] The human forearm has the ability to rotate, and this rotation function enables the hand to flexibly perform grasping actions in various directions. The rotation movements of the forearm are mainly divided into pronation and supination. Under normal circumstances, the angle range of pronation is between 0° and 90°, while the angle range of supination is between 0° and 100°. The normal rotation function of the forearm depends on the intact connection of the ulna and radius and the normal contraction of the forearm rotation muscle group. However, in orthopedic diseases, such as congenital radio-ulnar synostosis, elbow joint stiffness, ulna and radius fractures, heterotopic ossification, etc., these diseases may cause the rotation function of the patient's forearm to be impaired or completely lost, thus affecting their daily self-care ability.

[0003] For these patients, doctors need to evaluate the rotation function of their forearms before and after treatment in order to formulate precise treatment and rehabilitation goals and evaluate the treatment effects. At present, the methods for clinically evaluating the rotation function of the forearm usually require the patient to flex both elbows at 90 degrees and close them to the trunk, hold a pen or other straight thin rod with both hands, and then perform pronation and supination actions under the guidance of a doctor. The doctor estimates the rotation angles of both forearms by observing the rotation angle of the object. However, this method has some problems, such as the visual evaluation results being relatively subjective, the estimation being rough and unable to provide precise numerical values, and the measurement efficiency being relatively low.

[0004] Therefore, in order to more accurately obtain the numerical value of the forearm rotation angle, we need a forearm rotation angle measuring instrument that can directly and precisely read the numerical value. This measuring instrument will greatly improve the accuracy and efficiency of forearm rotation function evaluation and provide more precise treatment and rehabilitation guidance for patients. Content of the Utility Model

[0005] In view of this, the purpose of the utility model is to overcome the deficiencies in the prior art and provide a forearm rotation angle measuring instrument.

[0006] The utility model provides the following technical solutions:

[0007] An embodiment of the present application provides a forearm rotation angle measuring instrument, including an installation housing and an indicating component. The indicating component includes a pointer, a rotating shaft, and a gravity hammer. The rotating shaft is rotatably installed on the installation housing. The pointer is fixedly connected to the rotating shaft. The pointer has two ends, and the gravity hammer is fixedly connected to one of the ends of the pointer. When the installation housing rotates, the gravity hammer keeps the pointer parallel to the vertical direction.

[0008] In one embodiment, the forearm rotation angle measuring instrument further includes a traction ring body, which is coaxially arranged with the rotating shaft on the mounting housing, and the gravity hammer and the pointer are located inside the ring body of the traction ring body; the traction ring body and the gravity hammer are made of magnetic materials, so that the traction ring body and the gravity hammer attract each other to reduce the reciprocating swing amplitude of the gravity hammer and the pointer.

[0009] In one embodiment, the gravity hammer includes a fixed housing and a first magnetic block. The fixed housing is fixedly connected to one end of the pointer, and a receiving chamber is formed in the fixed housing; the first magnetic block is fixedly installed in the receiving chamber, and the first magnetic block is magnetically connected to the traction ring body.

[0010] In one embodiment, the forearm rotation angle measuring instrument further includes an angle detection component, which includes a controller, an angle detection unit and an output unit. The angle detection unit is electrically connected to the controller. The angle detection unit is used to detect the rotation angle of the mounting housing relative to the rotating shaft, and the angle detection unit converts the detection result into an electrical signal and sends it to the controller; the output unit is electrically connected to the controller. After receiving the detection signal of the angle detection unit, the controller sends it to the output unit, and the controller outputs the detection result through the output unit.

[0011] In one embodiment, the output unit includes a display, and the display is electrically connected to the controller. The controller transmits the received electrical signal to the display, so that the controller displays the detection result through the display.

[0012] In one embodiment, the output unit includes a speaker, and the speaker is electrically connected to the controller. The controller plays the received electrical signal through the speaker.

[0013] In one embodiment, the output unit includes a wireless transmission module, and the controller establishes a wireless communication connection with an external device through the wireless transmission module.

[0014] In one embodiment, the angle detection unit includes a circular capacitive grating angular displacement sensor, and the circular capacitive grating angular displacement sensor is electrically connected to the controller. The circular capacitive grating angular displacement sensor is used to detect the rotation angle of the mounting housing relative to the rotating shaft.

[0015] In one embodiment, the forearm rotation angle measuring instrument further includes a rear cover, which includes a cover body part and a grip part. The cover body part is installed on the side of the installation shell away from the pointer, and the grip part is installed on the side of the cover body part away from the installation shell. The grip part is an arc-shaped structure.

[0016] In one embodiment, the pointer is made of non-magnetic material.

[0017] In one embodiment, the rotating shaft is made of non-magnetic material.

[0018] The embodiments of the present utility model have the following advantages:

[0019] In the embodiment of the present application, the installation shell provided is used to provide a gripping position for the subject, which is convenient to use. When the forearm of the subject rotates, it drives the installation shell to rotate. During the rotation of the installation shell, the pointer is affected by the gravity hammer and keeps vertical. By measuring the rotation angle of the installation shell relative to the pointer, the rotation angle of the subject's forearm can be measured. Through the above settings, the rotation angle of the forearm can be accurately measured in this embodiment, and the measurement efficiency can be improved, which is convenient for quantitatively evaluating the rotation angle of the patient's forearm and avoiding numerical errors caused by rough visual estimation.

[0020] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 FIG. shows a schematic structural view of one perspective of one embodiment of a forearm rotation angle measuring instrument provided by the embodiment of the present application;

[0023] Figure 2 FIG. shows a schematic structural view of a second perspective of one embodiment of a forearm rotation angle measuring instrument provided by the embodiment of the present application;

[0024] Figure 3 FIG. shows a schematic structural view of a third perspective of one embodiment of a forearm rotation angle measuring instrument provided by the embodiment of the present application;

[0025] Figure 4Shows an exploded view of one embodiment of a forearm rotation angle measuring instrument provided by an embodiment of the present application;

[0026] Figure 5 Shows an exploded view of another embodiment of a forearm rotation angle measuring instrument provided by an embodiment of the present application;

[0027] Figure 6 Shows a schematic structural diagram of partial structures of four perspectives of one embodiment of a forearm rotation angle measuring instrument provided by an embodiment of the present application;

[0028] Figure 7 Shows a schematic structural diagram of five perspectives of another embodiment of a forearm rotation angle measuring instrument provided by an embodiment of the present application;

[0029] Figure 8 Shows a schematic structural diagram of six perspectives of yet another embodiment of a forearm rotation angle measuring instrument provided by an embodiment of the present application.

[0030] Main element symbol description:

[0031] 100 - mounting housing; 150 - guide post;

[0032] 200 - pointer; 220 - rotating shaft; 240 - gravity hammer; 242 - fixed housing; 246 - first magnetic block; 260 - scale dial;

[0033] 300 - traction ring body;

[0034] 400 - display; 420 - moving grating; 440 - static grating;

[0035] 500 - rear cover; 520 - cover part; 540 - grip part. Detailed description of the specific implementation

[0036] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0037] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes.

[0038] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise clearly and specifically defined.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the specification of the template herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0041] As Figures 1 to 8 shown, an embodiment of the present application provides a forearm rotation angle measuring instrument, including an installation housing 100 and an indicating assembly.

[0042] The indicating assembly includes a pointer 200, a rotating shaft 220 and a gravity hammer 240. The rotating shaft 220 is rotatably installed on the installation housing 100. The pointer 200 is vertically and fixedly connected to the rotating shaft 220. The pointer 200 has two ends, and the two ends of the pointer 200 are respectively a first end and a second end. As Figure 1 shown, an arrow is provided on the first end of the pointer 200, and a gravity hammer 240 is fixedly connected to the second end of the pointer 200.

[0043] During the rotation of the mounting housing 100, the gravity hammer 240 keeps the pointer 200 parallel to the vertical direction.

[0044] Exemplarily, as Figure 1 shown, a scale dial 260 is provided on the mounting housing 100. The scale dial 260 is fixedly connected to the mounting housing 100 by means such as welding, gluing, snap connection or bolt connection. The rotation of the mounting housing 100 drives the rotation of the scale dial 260. Digital scales are provided on the scale dial 260, and the digital scales include 0° to 180° clockwise and 0° to 180° counterclockwise. Exemplarily, a groove is formed on the mounting housing 100, and the shape of the groove is adapted to the shape of the scale dial 260.

[0045] Exemplarily, a rotation through hole is provided on the scale dial 260, and the rotation shaft 220 passes through the mating through hole of the mounting housing and the rotation through hole of the scale dial.

[0046] During use, initially, as Figure 1 shown, the subject holds the mounting housing 100, and the subject's forearm rotates the mounting housing 100 to the state as Figure 7 shown. The pointer 200 remains vertical under the action of the gravity hammer 240, that is, under the action of the gravity hammer, the pointer 200 always remains parallel to the gravity direction, and the mounting housing 100 rotates relative to the pointer 200 and the gravity hammer 240. The rotation of the mounting housing 100 drives the rotation of the scale dial 260, and the pointer 200 can point to the numbers on the scale dial 260 to display the rotation angle.

[0047] Exemplarily, a mating through hole is provided on the mounting housing 100, and the rotation shaft 220 is rotatably mounted on the mounting housing 100 at the mating through hole. Exemplarily, a bearing is sleeved on the rotation shaft 220, and the bearing is mounted at the mating through hole to reduce the rotational friction of the rotation shaft 220.

[0048] Exemplarily, the shape of the scale dial 260 is not limited. Exemplarily, the scale dial 260 is circular or polygonal, etc.

[0049] In the embodiment of the present application, the provided mounting housing 100 provides a grasping position for the subject. The rotation of the subject's forearm drives the rotation of the mounting housing 100. During the rotation of the mounting housing 100, the pointer 200 is subjected to the acting force of the gravity hammer 240 to keep the pointer 200 vertical. By measuring the rotation angle of the mounting housing 100 relative to the pointer 200, the rotation angle of the subject's forearm is further measured.

[0050] In one embodiment, as Figure 1As shown, a guiding column 150 is fixedly arranged on the mounting housing 100. The guiding column 150 is fixedly mounted on the mounting housing 100 by means of welding, bolt connection, clamping, integral molding, gluing, etc., and the rotation of the mounting housing 100 drives the guiding column 150 to rotate. When the angle of rotation of the mounting housing 100 relative to the pointer 200 is 0°, the mounting housing 100 is in the initial position and the initial state. Among them, the guiding column 150 is in the uppermost position of the mounting housing 100; the tester can drive the guiding column 150 to rotate by rotating the mounting housing 100. The doctor can guide the tester to make the actions of pronation or supination of the forearm through the guiding column 150, and the guiding column 150 can provide a reference for the tester.

[0051] Exemplarily, as Figure 1 shown, the mounting housing is configured as a gourd-shaped housing structure. In another embodiment, as Figure 8 shown, the mounting housing is configured as a cylindrical housing structure. During the rotation of the cylindrical housing of the mounting housing, the change in the center of gravity is small, and the interference of the gravity of the mounting housing on the forearm of the tester is small, and the test result is more accurate.

[0052] As Figure 4 and Figure 5 shown, in one embodiment, the forearm rotation angle measuring instrument further includes a traction ring body 300.

[0053] Exemplarily, the traction ring body 300 is a ring structure. The traction ring body 300 is fixedly connected to the dial 260 by means of welding, gluing, clamping or bolt connection, etc. The rotation of the mounting housing 100 drives the dial and the traction ring body 300 to rotate. In another embodiment, the traction ring body 300 is fixedly connected to the mounting housing 100 by means of welding, gluing, clamping or bolt connection, etc. The rotation of the mounting housing 100 drives the traction ring body 300 to rotate.

[0054] The traction ring body 300 and the rotating shaft 220 are coaxially arranged on the mounting housing 100. As Figure 1 shown, the gravity hammer 240 and the pointer 200 are located inside the ring body of the traction ring body 300.

[0055] The traction ring body 300 and the gravity hammer 240 are made of magnetic materials, so that the traction ring body 300 and the gravity hammer 240 attract each other to reduce the reciprocating swing amplitude of the gravity hammer 240 and the pointer 200 and improve the ability to resist external force interference.

[0056] As Figure 6 shown, in one embodiment, the gravity hammer 240 includes a fixed housing 242 and a first magnetic block 246.

[0057] The fixed housing 242 is fixedly connected to the second end of the pointer 200 by means of welding, gluing, bolt connection, clamping or integral molding, etc.

[0058] An accommodation chamber is provided in the fixed housing 242. The first magnetic block 246 is fixedly installed in the accommodation chamber, and the first magnetic block 246 is magnetically connected to the traction ring body 300, so that the first magnetic block and the traction ring body attract each other.

[0059] Exemplarily, the first magnetic block 246 is fixedly connected to the inner wall of the accommodation chamber by means of welding, gluing, bolt connection or snap connection.

[0060] Exemplarily, the fixed housing 242 is made of non-magnetic material.

[0061] Exemplarily, the first magnetic block 246 is a crescent-shaped block structure, and the accommodation chamber is configured as a cylindrical cavity or a crescent-shaped cylindrical cavity adapted to the first magnetic block 246. The first magnetic block 246 is configured as a crescent-shaped block structure, and the pointer 200 is fixedly connected to the middle position of the first magnetic block 246, which can make the resultant force direction of the traction force of the traction ring body 300 on the first magnetic block 246 parallel to the pointer 200, thereby maximizing the resultant force of the above-mentioned traction force, reducing the swing amplitude of the pointer 200 and shortening the stop time, and further improving the anti-external interference ability of the pointer 200 and the measurement efficiency.

[0062] In another embodiment, the first magnetic block 246 is a disc-shaped structure, and the accommodation chamber is configured as a cylindrical cavity.

[0063] In one embodiment, the forearm rotation angle measuring instrument further includes an angle detection component, and the angle detection component can detect the rotation angle of the installation housing 100 relative to the pointer 200.

[0064] The angle detection component includes a controller, an angle detection unit and an output unit.

[0065] The angle detection unit is electrically connected to the controller. The angle detection unit is used to detect the rotation angle of the installation housing 100 relative to the rotation shaft 220. The rotation angle of the installation housing relative to the rotation shaft is equal to the rotation angle of the installation housing relative to the pointer. The angle detection unit converts the detection result into an electrical signal and sends it to the controller.

[0066] The output unit is electrically connected to the controller. After receiving the detection signal of the angle detection unit, the controller sends it to the output unit, and the controller outputs the detection result through the output unit.

[0067] Exemplarily, the angle detection unit is an angular displacement sensor, and the angular displacement sensor is one of the following: a resistive angular displacement sensor, a rotary differential transformer type angular displacement sensor, a circular capacitive grating angular displacement sensor or a capacitive angular displacement sensor, etc.

[0068] Exemplarily, the output unit can output the detection result to the outside world in one or more of the following ways: electrical signals, wireless signals, vibration signals, optical signals, motion signals, etc. Vibration signals include sound vibration signals and human touch vibration signals, etc. Optical signals include pattern identification diffuse reflection optical signals and light emitter optical signals, etc.

[0069] Exemplarily, the angle detection component further includes a circuit board, the controller is electrically connected to the circuit board, and the rest of the electrical components are directly or indirectly electrically connected to the circuit board. The controller controls other electrical components or conducts information transmission through the circuit board. The relevant content here is prior art and will not be elaborated further.

[0070] There is no limitation on the model of the controller. The circuit board can receive electrical energy from the outside world and then supply electrical energy to other electrical components. There is no limitation on the power supply method of the outside world to the circuit board, such as battery power supply, wireless charging, or mains socket power supply, etc.

[0071] As Figure 1 shown, in one embodiment, the output unit includes a display 400. The display 400 is electrically connected to the controller. The controller transmits the received electrical signal to the display 400, so that the controller displays the angle detection result through the display 400. Exemplarily, the display 400 is arranged on the installation housing. In another embodiment, the display is arranged on the dial.

[0072] Exemplarily, the controller can also display other parameters through the display 400, such as battery power, health status parameters further obtained based on the angle detection result, ambient temperature, body temperature of the subject, etc.

[0073] Exemplarily, the display is one of the following: liquid crystal display (LCD, Liquid Crystal Display), organic electroluminescent display (OLED, Organic Light-Emitting Diode), cathode ray tube (CRT) display, etc.

[0074] In one embodiment, the output unit includes a speaker. As Figure 2 or Figure 5 shown, through holes for the speaker to amplify sound are provided on the installation housing 100. The speaker is electrically connected to the controller. The controller plays the angle detection result through the speaker by transmitting the received electrical signal.

[0075] Exemplarily, the controller plays the detected angle value through the speaker.

[0076] In another embodiment, the controller can also determine whether the subject is healthy based on the angle detection value and play the health status through the speaker.

[0077] In one embodiment, the output unit includes a wireless transmission module. The controller establishes a wireless communication connection with an external device through the wireless transmission module, enabling the controller to control the external device to display the angle detection result through the wireless transmission module.

[0078] Exemplarily, the external device includes a computer or a mobile intelligent terminal, such as a mobile phone, etc.

[0079] Exemplarily, the wireless transmission module is at least one of the following: a Bluetooth module, a WiFi module, an LTE (Long Term Evolution) module, a Zigbee module, an NB-IoT module, a LoRa module, a TPUNB module, a GPRS module, a Wi-Fi+BLE combined module, etc.

[0080] In another embodiment, the output unit includes connection terminals, and the connection terminals can be electrically connected to a computer or a mobile intelligent terminal, such as a mobile phone, through a data cable.

[0081] In one embodiment, the angle detection unit includes a circular capacitive grating angular displacement sensor. The circular capacitive grating angular displacement sensor is electrically connected to the controller, and the circular capacitive grating angular displacement sensor is used to detect the rotation angle of the mounting housing 100 relative to the rotating shaft 220.

[0082] Exemplarily, as Figure 4 and Figure 5 shown, the moving grating 420 of the circular capacitive grating angular displacement sensor is fixedly arranged on the rotating shaft 220, the static grating 440 of the circular capacitive grating angular displacement sensor is installed on the mounting housing 100, and the rotation of the mounting housing 100 drives the static grating 440 to rotate, causing the static grating 440 to rotate relative to the moving grating 420, thereby detecting the rotation angle of the mounting housing 100 relative to the rotating shaft 220 and the pointer 200.

[0083] In another embodiment, the static grating 440 of the circular capacitive grating angular displacement sensor is arranged on the rotating shaft 220, and the moving grating 420 of the circular capacitive grating angular displacement sensor is installed on the mounting housing 100.

[0084] The forearm rotation angle measurement in the embodiments of the present application uses an angular displacement sensor, adopts a digital display design and wireless transmission, has high measurement sensitivity, and is more objective and efficient for reading and recording numerical values. Moreover, the structure of the embodiments of the present application is ingenious and simple, easy to manufacture, can provide objective and accurate data for clinical diagnosis and treatment, and can better quantitatively evaluate the patient's condition and rehabilitation situation.

[0085] As Figure 2 and Figure 3As shown, in one embodiment, the forearm rotation angle measuring instrument further includes a rear cover 500. The rear cover 500 includes a cover body portion 520 and a grip portion 540. The cover body portion 520 is fixedly installed on the installation housing 100 by means such as welding, gluing, snap connection or bolt connection, and the cover body portion is located on the side of the installation housing away from the pointer 200, that is, the cover body is arranged opposite to the pointer. The grip portion 540 is fixedly installed on the side of the cover body portion 520 away from the installation housing 100 by means such as welding, gluing, snap connection, integral molding or bolt connection. The grip portion 540 is of an arc-shaped structure. The subject holds the grip portion 540 by hand. The rotation of the subject's forearm drives the grip portion 540 to rotate. The rotation of the grip portion 540 drives the cover body portion 520 and the installation housing 100 to rotate relative to the rotation axis 220 and the pointer 200.

[0086] In one embodiment, the pointer 200 is made of non-magnetic material.

[0087] In one embodiment, the rotation axis 220 is made of non-magnetic material.

[0088] The forearm rotation angle measuring instrument provided by the embodiments of the present application has at least the following implementation application scenarios:

[0089] Implementation scenario for measuring the absolute value of forearm rotation: The patient takes a standing or sitting position, bends the elbow at 90° and presses it tightly against the trunk. The patient holds a forearm rotation angle measuring instrument in each hand, grasps the grip portion of the forearm rotation angle measuring instrument tightly with the palm, and makes the rotation guide column face upward. At this time, it is the neutral position of the forearm, and the display prompts the angle to be 0°. Then the measurement of the forearm rotation angle can be started. The doctor prompts the patient to rotate the guide column outward to the maximum amplitude, and the angle prompted by the display is the bilateral forearm supination angle. After recording, the patient is instructed to return to the neutral position. The doctor prompts the patient to rotate the guide column inward to the maximum amplitude, and the angle prompted by the display is the bilateral forearm pronation angle.

[0090] Implementation scenario for measuring the upper limb rotation angle with shoulder and elbow joint compensation: The patient takes a standing or sitting position, with both elbows in a straight position. The patient holds a forearm rotation angle measuring instrument in each hand, grasps the grip portion of the forearm rotation angle measuring instrument tightly with the palm, and makes the guide column face upward. The display prompts the angle to be 0°. Then the measurement of the upper limb rotation angle can be started. The doctor prompts the patient to rotate the guide column outward to the maximum amplitude, and the angle prompted by the display is the upper limb pronation angle after shoulder and elbow joint compensation. After recording, the patient is instructed to return to the neutral position. The doctor prompts the patient to rotate the guide column inward to the maximum amplitude, and the angle prompted by the display is the upper limb supination angle after shoulder and elbow joint compensation.

[0091] The embodiments of the present application are user-friendly to patients. When in use, it is comfortable to hold and portable to operate. The patient only needs to hold the grip portion with both hands and rotate this measuring instrument to measure the forearm pronation or supination angle. It is not restricted by the patient's height and sitting or standing positions, and has a relatively high degree of freedom of use.

[0092] In all the examples shown and described herein, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0093] It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0094] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model.

Claims

1. A forearm rotation angle measuring instrument, characterized in that: include: Installing the housing (100); An indication component, the indication component comprising a pointer (200), a rotating shaft (220) and a gravity hammer (240), the rotating shaft (220) being rotatably mounted on the mounting housing (100), the pointer (200) being fixedly connected to the rotating shaft (220), the pointer (200) having two ends, and the gravity hammer (240) being fixedly connected to one end of the pointer (200); During the rotation of the mounting housing (100), the gravity hammer (240) keeps the pointer (200) parallel to the vertical direction.

2. The forearm rotation angle measuring instrument according to claim 1, characterized in that: Also includes: A traction ring body (300), wherein the traction ring body (300) and the rotating shaft (220) are coaxially arranged on the mounting housing (100), and the gravity hammer (240) and the pointer (200) are located inside the traction ring body (300); The traction ring body (300) and the gravity hammer (240) are made of magnetic materials, so that the traction ring body (300) and the gravity hammer (240) attract each other to reduce the reciprocating swing amplitude of the gravity hammer (240) and the pointer (200).

3. The forearm rotation angle measuring instrument according to claim 2, characterized in that: The gravity hammer (240) comprises: A fixed shell (242), the fixed shell (242) being fixedly connected to one end of the pointer (200), and a receiving chamber being provided in the fixed shell (242); A first magnetic block (246), wherein the first magnetic block (246) is fixedly installed in the accommodating chamber, and the first magnetic block (246) is magnetically connected to the traction ring (300).

4. The forearm rotation angle measuring instrument according to claim 1, characterized in that: Also includes: An angle detection component, the angle detection component comprising: Controller; an angle detection unit, the angle detection unit being electrically connected to the controller, the angle detection unit being used to detect the rotation angle of the mounting housing (100) relative to the rotation axis (220), the angle detection unit converting the detection result into an electrical signal and sending it to the controller; An output unit, wherein the output unit is electrically connected to the controller, and the controller sends the detection signal received from the angle detection unit to the output unit, and the controller outputs the detection result through the output unit.

5. The forearm rotation angle measuring instrument according to claim 4, characterized in that: The output unit comprises: A display (400) is electrically connected to the controller, and the controller transmits the received electrical signal to the display (400), so that the controller displays the detection result through the display (400).

6. The forearm rotation angle measuring instrument according to claim 4, characterized in that: The output unit comprises: A speaker is electrically connected to the controller, and the controller plays the received electrical signal through the speaker.

7. The forearm rotation angle measuring instrument according to claim 4, characterized in that: The output unit comprises: A wireless transmission module, through which the controller and the external device establish a wireless communication connection.

8. The forearm rotation angle measuring instrument according to claim 4, characterized in that: The angle detection unit comprises: A circular capacitive grating angular displacement sensor, the circular capacitive grating angular displacement sensor is electrically connected to the controller, and the circular capacitive grating angular displacement sensor is used to detect the rotation angle of the mounting housing (100) relative to the rotation axis (220).

9. The forearm rotation angle measuring instrument according to claim 1, characterized in that: Also includes: A back cover (500), wherein the back cover (500) includes a cover body (520) and a handle (540), wherein the cover body (520) is mounted on a side of the mounting shell (100) away from the pointer (200), and the handle (540) is mounted on a side of the cover body (520) away from the mounting shell (100), and the handle (540) is an arc-shaped structure.

10. The forearm rotation angle measuring instrument according to claim 1, characterized in that: The pointer (200) is made of a non-magnetic material; And / or, the rotating shaft (220) is made of a non-magnetic material.

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