A hip joint angle measuring instrument

Abstract

The present invention relates to a hip joint angle measuring instrument, which includes a motion conversion device and a recording device. The motion conversion device includes a first fixed seat, an extension piece and a paintbrush. The first fixed seat is provided with a binding component. The extension piece is used to connect the paintbrush and the first fixed seat, and the paintbrush extends upward to the patient's waist. The recording device includes a second fixed seat, drawing paper and a winding driving member. A buckle member is provided on the second fixed seat. The drawing paper has an externally disposed unfolding section and a free end, and the free end is clamped on the winding driving member. A window for leaking out the unfolding section is opened on the second fixed seat. The winding driving member winds and pulls the drawing paper, causing the paintbrush to draw a trajectory on the unfolding section. Compared with the prior art, this measuring instrument can be fitted to the patient's training status in real time and produce a joint angle curve that can reflect the training process, no longer requiring calculation and derivation in cooperation with an algorithm, and having the advantages of simple structural settings and low cost for use by rehabilitation therapists and patients.

Description

Technical Field

[0001] The present invention relates to the technical field of rehabilitation aids, and particularly relates to a hip joint angle measuring instrument. Background Art

[0002] At present, the methods for obtaining hip joint angle curves clinically mainly rely on some gait analysis systems. Commonly used gait analysis systems are roughly divided into two categories: one is a wearable intelligent gait analysis system, which uses electronic components such as high-precision angle sensors and surface electromyographs to collect limb angle data and transmit it to a computer, and outputs gait analysis data from the computer; the other is an optical three-dimensional motion capture system, which captures passive light-emitting marker points by using infrared high-speed cameras, constructs three-dimensional data of limb movement, and uses a computer for data processing and gait analysis. The above two devices collect data through electronic devices, convert analog signals into digital signals, and use a computer for digital signal processing and analysis. The system is relatively complex, the operation and use process are also relatively cumbersome, the professional technical level requirements for rehabilitation therapists are high, and the cost is expensive, and the use cost is too high. This makes it difficult for existing gait analysis systems to be popularized in hospitals, communities and families. Summary of the Invention

[0003] In view of the above technical problems, the present invention provides a hip joint angle measuring instrument, a hip joint angle curve measuring and drawing device with simple overall operation and low cost, for the use of rehabilitation therapists and patients.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A hip joint angle measuring instrument includes a motion conversion device and a recording device;

[0006] The motion conversion device includes a first fixing seat, an extension piece and a paintbrush. The first fixing seat is provided with a binding component for installing and fixing the first fixing seat on the patient's leg; the extension piece is used to connect the paintbrush and the first fixing seat, and the paintbrush extends upward to the patient's waist;

[0007] The recording device includes a second fixing seat, drawing paper and a winding driving member. The second fixing seat is provided with a buckling member for installing the second fixing seat on the patient's waistband; the drawing paper is wound and stored inside the second fixing seat. The drawing paper has an externally placed unfolding section and a free end, and the free end is clamped on the winding driving member. A window for leaking out the unfolding section is opened on the second fixing seat, and the window corresponds to the paintbrush. The winding driving member winds and pulls the drawing paper to cause the paintbrush to draw a trajectory on the unfolding section.

[0008] In one possible implementation manner, the second fixing seat is provided with a first mounting groove for winding and storing the drawing paper and a second mounting groove for storing the winding driving member;

[0009] The first installation slot is rotatably connected with a rotating shaft, and the drawing paper is wound and stored on the rotating shaft.

[0010] In one possible implementation manner, a pressing block is slidably connected to the first installation groove, and one side of the pressing block presses the rotating shaft tightly;

[0011] An elastic member is also disposed in the first installation groove, one end of the elastic member is connected to the pressing block, and the other end of the elastic member is connected to the first installation groove, and the elastic member is in a compressed state.

[0012] In one possible implementation mode, a writing pad is provided on the window, the top of the writing pad is frame-shaped, and the bottom is a plane for laying drawing paper, both sides of the writing pad are provided with avoidance grooves for the drawing paper to pass through, the free end of the drawing paper passes through the two avoidance grooves and is clamped on the winding drive member, and the unfolding section is located on the bottom plane of the writing pad.

[0013] In one possible implementation manner, the top of the writing pad is in contact with the extension member, and the top of the writing pad is used to support the extension member under force.

[0014] In one possible implementation manner, two flip covers are disposed on the second fixing seat, wherein one of the flip covers is correspondingly disposed on the first mounting groove, and the other flip cover is correspondingly disposed on the second mounting groove.

[0015] In one possible implementation manner, the winding drive member includes a driving motor, a reducer and a rotating drum;

[0016] The second mounting groove is provided with a bearing by means of a first screw, and the inner ring of the bearing is fixedly connected to the second fixing seat and the driving motor;

[0017] The reducer is drivingly connected to the output shaft of the driving motor, the reducer is drivingly connected to the rotating drum, the rotating drum is fixed to the outer ring of the bearing, and a clamping member is provided on the rotating drum, and the clamping member is used to clamp the free end of the drawing paper.

[0018] In one possible implementation manner, the rotating drum includes a transmission member and a sleeve, the transmission member is transmission-connected to the reducer, the sleeve is sleeved on the transmission member, and the sleeve is transmission-connected to the transmission member via a key position.

[0019] In one of the feasible embodiments, one end of the clamping member is hinged to the end of the sleeve, the other end of the clamping member is snap-connected to the other end of the sleeve, and the middle section of the clamping member is used to clamp the free end of the drawing paper.

[0020] In one of the feasible embodiments, the elastic member is a spring.

[0021] Due to the adoption of the above technical solutions, the present invention has the following advantages:

[0022] When using this measuring instrument for assisted training, first install the recording device on the patient's waistband. Use the snap-fastening member to install and fix the second fixing seat as a whole on the patient's waistband. Then install and fix the motion conversion device on the patient's thigh. Use the restraint assembly to fix the first fixing seat on the thigh. During the installation process, it is necessary to pay attention to whether the positions of the window and the unfolded section of the drawing paper correspond to the paintbrush. Make the tip of the paintbrush contact the unfolded section of the drawing paper, and the paintbrush is located at the exact center of the window.

[0023] When starting the training, start the winding driving member. The rotation of the winding driving member will wind and pull the drawing paper. At this time, the paintbrush will start to leave a handwriting on the area of the unfolded section. As the training progresses, the paintbrush fixed on the thigh will swing synchronously according to the swinging amplitude of the thigh. With the winding of the drawing paper, the paintbrush will draw the joint angle curve of the hip joint in the sagittal plane on the drawing paper. Compared with the prior art, this measuring instrument can be closely fitted with the patient's training status in real time and produce a joint angle curve that can reflect the training process, no longer requiring calculation and derivation with the cooperation of algorithms, and has the advantages of simple structural setting and low cost for use by rehabilitation therapists and patients. Description of the Drawings

[0024] Figure 1 It is a specific structural schematic diagram of the hip joint angle measuring instrument in one embodiment of the present invention;

[0025] Figure 2 It is a specific structural schematic diagram of the recording device in one embodiment of the present invention;

[0026] Figure 3 It is a specific structural schematic diagram of the motion conversion device in one embodiment of the present invention;

[0027] Figure 4 It is a specific structural schematic diagram of the second fixing seat in one embodiment of the present invention;

[0028] Figure 5 It is a schematic diagram of the back structure of the second fixing seat in one embodiment of the present invention;

[0029] Figure 6 It is a specific structural schematic diagram of the pressing block in one embodiment of the present invention;

[0030] Figure 7 Schematic diagram of the specific structure of the drawing paper in an embodiment of the present invention;

[0031] Figure 8 Schematic diagram of the specific structure of the writing pad in an embodiment of the present invention;

[0032] Figure 9 Schematic diagram of the specific structure of the winding drive in an embodiment of the present invention;

[0033] Figure 10 Schematic diagram of the specific structure of the paintbrush in an embodiment of the present invention;

[0034] Reference numerals:

[0035] 1, recording device;

[0036] 101, second fixing seat; 1011, first installation groove; 1012, third installation groove; 1013, fourth installation groove; 1014, second installation groove; 1015, battery slot; 1016, bracket; 1017, mounting post; 1018, T-shaped groove;

[0037] 102, lower flip cover; 103, upper flip cover; 104, battery cover; 105, buckle member;

[0038] 106, drawing paper; 1061, rotating shaft;

[0039] 107, writing pad; 1071, front and rear borders; 1072, left and right borders; 1073, plane; 1074, arc hole;

[0040] 108, pressing block; 1081, sliding part; 1082, felt sheet; 1083, elastic member;

[0041] 109, winding drive; 1091, drive motor; 1092, reducer; 1093, transmission shaft; 1094, motor mounting seat; 1095, countersunk head screw; 1096, first screw; 1097, bearing; 1098, transmission member; 1099, second screw; 10910, sleeve;

[0042] 110, control circuit board; 111, battery assembly;

[0043] 2, action conversion device; 201, first fixing seat; 202, restraint assembly; 203, extension member; 204, nut; 3, paintbrush; 4, remote control. Detailed implementation manners

[0044] To make the objectives, technical solutions and advantages of the present invention more clear, the technical solutions in the present invention will be described clearly and completely below. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the protection scope of the present invention.

[0045] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the ordinary meanings understood by those of ordinary skill in the art to which the present invention pertains. The "first", "second", "third", "fourth" and similar terms used in the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "comprising" or "including" mean that the elements or items appearing before this term cover the elements or items listed after this term and their equivalents, without excluding other elements or items. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0046] Currently, the methods for obtaining hip joint angle curves clinically mainly rely on some gait analysis systems. Commonly used gait analysis systems are roughly divided into two categories: one is a wearable intelligent gait analysis system, which uses electronic components such as high-precision angle sensors and surface electromyographs to collect limb angle data and transmit it to a computer, and outputs gait analysis data from the computer; the other is an optical three-dimensional motion capture system, which captures passively luminous marker points by using infrared high-speed cameras, constructs three-dimensional data of limb movement, and uses a computer for data processing and gait analysis. The above two devices collect data through electronic devices, convert analog signals into digital signals, and use a computer for digital signal processing and analysis. The system is relatively complex, the operation and use process are also rather cumbersome, the professional technical level requirements for rehabilitation therapists are high, and the cost is expensive and the usage cost is too high. This makes it difficult for existing gait analysis systems to be popularized in hospitals, communities and families. To solve the above technical problems, the present invention provides a hip joint angle measuring instrument, which is a hip joint angle curve measuring and drawing device with simple operation and low cost for use by rehabilitation therapists and patients. The technical solutions of the present invention will be described in detail below with specific examples.

[0047] Refer to Figure 1 、 Figure 2 and Figure 3 As shown, a hip joint angle measuring instrument involved in the present invention includes a motion conversion device 2 and a recording device 1.

[0048] The motion conversion device 2 includes a first fixing seat 201, an extension piece 203 and a paintbrush 3. The first fixing seat 201 is provided with a binding assembly 202, and the binding assembly 202 is used to install and fix the first fixing seat 201 on the patient's leg. The extension piece 203 is used to connect the paintbrush 3 with the first fixing seat 201, and the paintbrush 3 extends upward to the patient's waist. Specifically, the extension piece 203 is connected to the first fixing seat 201 by a fixing screw.

[0049] The recording device 1 includes a second fixing seat 101, drawing paper 106 and a winding drive 109. A buckle 105 is provided on the second fixing seat 101, and the buckle 105 is used to install the second fixing seat 101 on the patient's belt. The drawing paper 106 is wound and stored inside the second fixing seat 101. The drawing paper 106 has an external unfolding section and a free end. The free end is clamped on the winding drive 109. A window for leaking the unfolding section is opened on the second fixing seat 101. The window corresponds to the paintbrush 3. The winding drive 109 winds and pulls the drawing paper 106, prompting the paintbrush 3 to draw a track on the unfolding section.

[0050] For example, when using the measuring instrument for auxiliary training, the recording device 1 is first installed on the patient's belt, and the second fixing seat 101 is installed and fixed on the patient's belt as a whole using the fastener 105. Then the motion conversion device 2 is installed and fixed on the patient's thigh, and the first fixing seat 201 is fixed on the thigh using the restraining component 202. During the installation process, it is necessary to pay attention to whether the position of the window and the unfolded section of the drawing paper 106 corresponds to the brush 3, so that the tip of the brush 3 is in contact with the unfolded section of the drawing paper 106, and the brush 3 is located in the center of the window.

[0051] When training begins, the winding drive 109 is started, and the rotation of the winding drive 109 will wind up and pull the drawing paper 106. At this time, the brush 3 will begin to leave traces on the area of ​​the unfolded section. As the training progresses, the brush 3 fixed on the thigh will swing synchronously according to the swing amplitude of the thigh. In conjunction with the winding of the drawing paper 106, the brush 3 will draw a joint angle curve of the hip joint in the sagittal plane on the drawing paper 106. Compared with the prior art, the measuring instrument can be adapted to the patient's training status in real time, and output a joint angle curve that can reflect the training process. It no longer needs to be calculated and derived with an algorithm. It has the advantages of simple structural setting and low cost for use by rehabilitation therapists and patients.

[0052] In some embodiments, a remote controller 4 can be extended to be provided. The remote controller 4 is wirelessly connected to the winding drive 109. The remote controller 4 has a start and stop button, and the winding drive 109 is started and stopped by remote control, so that the operator can control it.

[0053] Reference Figure 4, Figure 5 As shown, in one embodiment, the overall structure of the second fixing base 101 is further refined. The second fixing base 101 is provided with a first installation groove 1011 for winding and storing the drawing paper 106 and a second installation groove 1014 for storing the winding driving member 109. A rotating shaft 1061 is rotatably connected to the first installation groove 1011, and the drawing paper 106 is wound and stored on the rotating shaft 1061. A third installation groove 1012 for the cushion writing member 107 to sink into and be stored is provided between the first installation groove 1011 and the second installation groove 1014.

[0054] Specifically, brackets 1016 for positioning and supporting the rotating shaft 1061 are provided on both sides of the first installation groove 1011. In addition, the rotating shaft 1061 includes guard plates on both sides thereof, and the guard plates protect the drawing paper 106 therein.

[0055] Refer to Figure 4 and Figure 6 and Figure 7 As shown, in this embodiment, preferably, in order to further improve the use stability of this measuring instrument, a pressing block 108 is slidably connected to the first installation groove 1011. The pressing block 108 is slidably connected to the first installation groove 1011 through a T-shaped groove 1018, and one side of the pressing block 108 tightly presses the rotating shaft 1061. In addition, an elastic member 1083 is further provided in the first installation groove 1011. One end of the elastic member 1083 is connected to the pressing block 108, and the other end is connected to the first installation groove 1011. The elastic member 1083 is in a compressed state. Specifically, the elastic member 1083 is a spring, and an installation post 1017 for installing the spring is provided in the first installation groove 1011.

[0056] It should be noted that the elastic force of the elastic member 1083 will cause the pressing block 108 to continuously tightly press on the rotating shaft 1061. Whether the winding driving member 109 drives the drawing paper 106 to wind or not, the whole drawing paper 106 can also have tension, making the writing effect of the paintbrush 3 smoother.

[0057] Among them, in order to protect the rotating shaft 1061, the pressing block 108 specifically includes a sliding portion 1081 and a felt sheet 1082, and the felt sheet 1082 is used to directly contact the rotating shaft 1061.

[0058] Refer to Figure 4 and Figure 8As shown, in this embodiment, preferably, a writing pad 107 is provided on the window. The top of the writing pad 107 is arranged in a frame shape, including left and right side frames 1072 and front and rear side frames 1071. The bottom is a plane 1073 for laying the drawing paper 106. Avoidance grooves for the drawing paper 106 to pass through are provided on the front and rear side frames 1071. The free end of the drawing paper 106 passes through the two avoidance grooves and is clamped on the winding drive member 109, and the unfolded section is located on the bottom plane 1073 of the writing pad 107.

[0059] Exemplarily, the setting of the writing pad 107 optimizes the force on the drawing paper 106 and further optimizes the writing smoothness of the paintbrush 3.

[0060] In this embodiment, preferably, the top of the writing pad 107 is in contact with the extension member 203, and the top of the writing pad 107 is used to support the extension member 203 under force. After the installation of the measuring instrument is completed, the top of the writing pad 107 can also play a role in supporting the extension member 203 under force.

[0061] In this embodiment, the overall structure of the second fixed seat 101 is further refined. Two flip covers are provided on the second fixed seat 101. One flip cover correspondingly covers the first installation groove 1011, and the other flip cover correspondingly covers the second installation groove 1014. The two flip covers are respectively the upper flip cover 103 and the lower flip cover 102.

[0062] Among them, in order to facilitate the positioning and fixing of the two flip covers, the flip covers are respectively located on both sides of the writing pad 107, and the movable edges of the flip covers and the side parts of the writing pad 107 are provided with snap fits. When the flip covers are in the closed state, they are positioned and fixed. In addition, two arc holes 1074 for facilitating the operation of the flip covers are also provided on the writing pad 107, which is convenient for the operator to lift the flip covers.

[0063] Among them, a control circuit board 110 is installed in the middle of the second fixed seat 101. The control circuit board 110 is control-connected to the winding drive member 109. A battery slot 1015 for installing a battery assembly 111 for power supply is opened on the back of the second fixed seat 101, and a battery cover 104 is covered on the battery slot 1015. In addition, inside the second fixed seat 101, specifically at the bottom of the third installation groove 1012, a fourth installation groove 1013 for accommodating the control circuit board 110 is provided.

[0064] Referring to Figure 9 As shown, in an embodiment, the overall structure of the winding drive member 109 is further refined. The winding drive member 109 includes a drive motor 1091, a speed reducer 1092, and a rotating cylinder.

[0065] The second mounting groove 1014 is provided with a bearing 1097 mounted by a first screw 1096. The inner ring of the bearing 1097 is fixed to the second fixing seat 101 by the first screw 1096, while the driving motor 1091 is fixed to the inner ring through a motor mounting seat 1094. The motor mounting seat 1094 and the driving motor 1091 are connected by a countersunk head screw 1095.

[0066] The speed reducer 1092 is in transmission connection with the output shaft of the driving motor 1091. A rotating cylinder is in transmission connection on the transmission shaft 1093 of the speed reducer 1092. The rotating cylinder is fixed to the outer ring of the bearing 1097. A clamping member is provided on the rotating cylinder for clamping the free end of the drawing paper 106.

[0067] In this embodiment, specifically, the rotating cylinder includes a transmission member 1098 and a sleeve 10910. The transmission member 1098 is fixedly connected in transmission with the speed reducer 1092 by a second screw 1099. The sleeve 10910 is sleeved on the transmission member 1098 and is in transmission connection with the transmission member 1098 through a keyway.

[0068] In this embodiment, the specific structure of the clamping member is further refined. One end of the clamping member is hinged to the end of the sleeve 10910, and the other end of the clamping member is snap-connected to the other end of the sleeve 10910. The middle section of the clamping member is used to clamp the free end of the drawing paper 106.

[0069] Refer to Figure 10 As shown, in one embodiment, a threaded section is provided on the outer edge of the paintbrush 3. The paintbrush 3 is threadedly connected to the extension member 203, and a nut 204 is threadedly connected to the threaded section to lock the paintbrush 3.

[0070] Through the setting of this structure, the height of the paintbrush 3 can be adjusted according to the actual situation for the operator to install before use.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. However, such modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hip joint angle measuring instrument, characterized in that, It includes a motion conversion device and a recording device; The motion conversion device comprises a first fixing seat, an extension piece and a paintbrush, wherein the first fixing seat is provided with a binding assembly, and the binding assembly is used to install and fix the first fixing seat on the patient's leg; the extension piece is used to connect the paintbrush with the first fixing seat, and the paintbrush extends upward to the patient's waist; The recording device includes a second fixing seat, drawing paper and a winding drive member, wherein a buckle is provided on the second fixing seat, and the buckle is used to mount the second fixing seat on the patient's belt; the drawing paper is wound and stored inside the second fixing seat, and the drawing paper has an external unfolding section and a free end, and the free end is clamped on the winding drive member, and a window for leaking the unfolding section is opened on the second fixing seat, and the window corresponds to the drawing brush, and the winding drive member winds and pulls the drawing paper to prompt the drawing brush to draw a track on the unfolding section.

2. The hip joint angle measuring instrument according to claim 1, wherein, The second fixing seat is provided with a first mounting groove for winding and storing the drawing paper and a second mounting groove for storing the winding driving member; The first installation slot is rotatably connected with a rotating shaft, and the drawing paper is wound and stored on the rotating shaft.

3. The hip joint angle measuring instrument according to claim 2, characterized in that, A pressing block is slidably connected to the first mounting groove, and one side of the pressing block presses the rotating shaft tightly; An elastic member is also disposed in the first installation groove, one end of the elastic member is connected to the pressing block, and the other end of the elastic member is connected to the first installation groove, and the elastic member is in a compressed state.

4. The hip joint angle measuring instrument according to claim 2, characterized in that, A writing pad is provided on the window, the top of the writing pad is frame-shaped, and the bottom is a plane for laying drawing paper. Avoidance grooves for the drawing paper to pass through are provided on both sides of the writing pad. The free end of the drawing paper passes through the two avoidance grooves and is clamped on the winding drive member. The unfolding section is located on the bottom plane of the writing pad.

5. The hip joint angle measuring instrument according to claim 4, characterized in that, The top of the writing pad is in contact with the extension piece, and the top of the writing pad is used to support the extension piece under force.

6. The hip joint angle measuring instrument according to claim 4, wherein, Two flip covers are arranged on the second fixing seat, wherein one of the flip covers is correspondingly arranged on the first mounting groove, and the other flip cover is correspondingly arranged on the second mounting groove.

7. The hip joint angle measuring instrument according to claim 2, characterized in that, The winding drive component includes a driving motor, a reducer and a rotating drum; The second mounting groove is provided with a bearing by means of a first screw, and the inner ring of the bearing is fixedly connected to the second fixing seat and the driving motor; The reducer is drivingly connected to the output shaft of the driving motor, the reducer is drivingly connected to the rotating drum, the rotating drum is fixed to the outer ring of the bearing, and a clamping member is provided on the rotating drum, and the clamping member is used to clamp the free end of the drawing paper.

8. The hip joint angle measuring instrument according to claim 7, characterized in that, The rotating drum includes a transmission member and a sleeve, the transmission member is transmission-connected to the reducer, the sleeve is sleeved on the transmission member, and the sleeve is transmission-connected to the transmission member via a key position.

9. The hip joint angle measuring instrument according to claim 8, characterized in that, One end of the clamping member is hinged to the end of the sleeve, and the other end of the clamping member is snap-connected to the other end of the sleeve. The middle section of the clamping member is used to clamp the free end of the drawing paper.

10. The hip joint angle measuring instrument according to claim 3, characterized in that The elastic member is a spring.

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