Posture and movement measuring device

Abstract

To provide a posture and motion measuring device that accurately measures angles regardless of the object being measured. [Solution] The device comprises a main measurement unit 11, a sub-measurement unit 13, a guide unit 12 positioned between the main measurement unit 11 and the sub-measurement unit 13 and formed to connect the main measurement unit 11 and the sub-measurement unit 13, and an angle notification unit for notifying the measurement result. The guide unit 12 has an extendable / retractable portion 121 that extends and retracts in at least a part of it. The angle notification unit sets a reference axis connecting a reference point where either the main measurement unit 11 or the sub-measurement unit 13 is located and a first measurement point where the other of the main measurement unit 11 or the sub-measurement unit 13 is located, and notifies the relative angle of the relative axis connecting the reference point where one of the units is located and the second measurement point where the other is located as the measurement result.

Description

[Technical Field]

[0001] The present invention relates to a posture motion measuring instrument. [Background Art]

[0002] In the medical field, evaluation of the range of joint motion based on measurement results of body joint angles is widely used in treatment planning for patients and the like. In many cases, measurement of joint angles is performed using a portable goniometer (angle measuring instrument) from the viewpoint of examination cost, examination time and the like.

[0003] Conventionally, as disclosed in, for example, Patent Document 1, a fixed-angle metal medical joint goniometer that measures a joint angle by bringing a pair of rotatable metal arms provided with angle scales into contact with a measurement site of a subject is known. [Prior Art Documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Utility Model Registration No. 3190067 [Summary of the Invention] [Problem to be Solved by the Invention]

[0005] In conventional joint angle measurement using a measuring instrument such as a goniometer, it was necessary to select a measuring instrument of an optimal size according to the joint to be measured in order to ensure measurement accuracy. In particular, large joints (such as shoulder, elbow, hip, knee, and ankle) and small joints (such as finger, toe, and temporomandibular joint) that are frequently used for range of motion evaluation differ greatly in the size of the measurement site (the distance between measurement points), so there has been a problem that it is difficult to perform high-accuracy measurement sharing the same measuring instrument.

[0006] The present invention has been made in consideration of such circumstances, and an object of the present invention is to provide a posture motion measuring instrument that can accurately measure angles regardless of the measurement object. [Means for Solving the Problem]

[0007] To achieve the above objectives, the present invention provides the following means. The posture motion measuring device of the present invention comprises a main measuring unit, a sub-measuring unit, a guidance unit disposed between the main measuring unit and the sub-measuring unit and formed to connect the main measuring unit and the sub-measuring unit, and an angle notification unit for notifying the measurement result. The guidance unit has at least a portion of an extendable / extendable section, and the angle notification unit sets a reference axis connecting a reference point on which either the main measuring unit or the sub-measuring unit is located and a first measuring point on which the other of the main measuring unit or the sub-measuring unit is located, and notifies the relative angle of the relative axis connecting the reference point on which one is located and the second measuring point on which the other is located as the measurement result. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a posture and motion measuring device that can accurately measure angles regardless of the object being measured. [Brief explanation of the drawing]

[0009] [Figure 1] This is a perspective view showing the posture and motion measuring device according to the present invention. [Figure 2] This is a perspective view showing the posture and motion measuring device according to the present invention with the upper part of the housing removed. [Figure 3] This is a plan view showing a posture and motion measuring device according to the present invention. [Figure 4] This figure shows the state in which relative angles are measured using the posture and motion measuring device according to the present invention. [Figure 5] This diagram shows the measurement flow using the posture and motion measuring device according to the present invention. [Figure 6] This figure shows the state in which the standard measurement procedure for large joints according to an embodiment of the present invention is being performed. [Figure 7] This figure shows the state in which the relative measurement procedure for major joints according to an embodiment of the present invention is being carried out. [Figure 8]This figure shows the state in which the standard measurement procedure for small joints according to a modified version of the present invention is being performed. [Figure 9] This figure shows the state in which the relative measurement procedure for small joints according to a modified version of the present invention is being performed. [Figure 10] This figure shows the results of comparing the performance of the posture and motion measuring device according to the present invention with that of a comparative example. [Modes for carrying out the invention]

[0010] In this embodiment, the drawings are schematic diagrams intended to clearly explain the configuration, and the dimensional ratios of each component may differ from those of the actual components.

[0011] [Embodiment] A posture and motion measuring device 1 according to an embodiment of the present invention will be described with reference to Figures 1-9. Figure 1 is a perspective view showing the posture and motion measuring device 1. Figure 2 is a perspective view showing the posture and motion measuring device 1 with the upper part of the housing removed. Figure 3 is a plan view of the posture and motion measuring device 1.

[0012] <Configuration of a posture and movement measurement device> As shown in Figure 1-3, the posture and motion measuring device 1 is a medical angle measuring device comprising a main measuring unit 11, a guidance unit 12, a sub-measuring unit 13, a housing unit 14, and a control unit (not shown). This posture and motion measuring device 1 measures the angle between measurement points 31 set on the body 3 of the person being measured when operated by the user 2 (see Figure 6).

[0013] <Main measurement section> The main measuring unit 11 is the part positioned on the measuring point 31 during measurement and corresponds to the stationary side (origin) in angle measurement. This main measuring unit 11 includes a main gripping unit (gripping part) 111 and a measuring switch 112.

[0014] The main gripping portion 111 is formed into an annular shape in a plan view from a material such as plastic, for example. The plan view is a state viewed from the gripping direction Z. The gripping direction Z is one direction orthogonal to the measurement axis direction X of the posture and motion measuring instrument 1. The measurement axis direction X is a direction connecting the measurement points 31, and is the direction in which the posture and motion measuring instrument 1 performs measurement. The space inside the main gripping portion 111 is formed in the shape of a through hole that is similar to and slightly larger than the shape of the first joint of a typical thumb. In addition, the front side (+Z side) of the main gripping portion 111 is curved with a predetermined radius of curvature so as to widen in the radial direction. The front side (+Z side) is the user 2 side when the user 2 inserts their thumb into the posture and motion measuring instrument 1 and holds it. The entire surface of the main gripping portion 111 is formed of a curved surface and has no corners. The user 2 is provided with a structure that allows the user 2 to grip the main measurement unit 11 by inserting a thumb through the main gripping portion 111 from the front side (+Z side).

[0015] The measurement switch 112 is a part such as a push-type physical button, for example, and is electrically connected to a control unit described later. This measurement switch 112 is arranged inside the main gripping portion 111, on the back side (-Z side), and on the main measurement side (+X side), that is, at a position on the side away from the sub measurement unit 13. The back side (-Z side) is the opposite side of the front side (+Z side) in the gripping direction Z. The main measurement side (+X side) is the main measurement unit 11 side in the measurement axis direction X. Further, the measurement switch 112 is provided so as to transmit a signal to the control unit when receiving an input from the outside. With the thumb inserted into the main gripping portion 111, the user 2 is provided to be able to operate the measurement switch 112 by the pressing force of the index finger and the thumb (an operation of sandwiching the measurement switch 112 between the thumb and the index finger).

[0016] Note that the shape, material and configuration of the main measurement unit 11 are not particularly limited as long as it can be arranged on the measurement point 31. For example, the main measurement unit 11 corresponds to the stationary side (origin) in angle measurement, but may also be used as the movable side. Furthermore, the main gripping portion 111 is formed in a shape that can be easily gripped with the thumb and is less likely to slip when gripped, but it may also be formed in a polygonal shape or in a rod shape that can be gripped by holding it. Furthermore, the measurement switch 112 is positioned in a location that allows for easy input by the thumb while gripping the main gripping part 111, but it may also be positioned at other locations on the main gripping part 111, or at other parts of the posture and motion measuring device 1. Furthermore, although the main gripping portion 111 is formed without corners so as to come into contact with the patient's body 3 during measurement, it may also have a shape that includes corners.

[0017] <Guidance part> The guidance section 12 is the part that guides the main measurement section 11 and the sub-measurement section 13 so that they are positioned parallel to and opposite each other in the measurement axis direction X, and corresponds to the arm portion of a conventional goniometer. This guidance section 12 is configured to be extendable and retractable. The guidance section 12 also includes an extendable section 121 and a housing section 122.

[0018] The telescopic section 121 is formed in a string-like shape extending in one direction, for example, from a material such as nylon. This telescopic section 121 is formed to extend and retract to a length of approximately 650 mm, which is sufficient for measuring the large joint 3a (see Figure 6). One end of the telescopic section 121 on the main measuring side (+X side) is connected to the housing section 122. The other end of the telescopic section 121 on the secondary measuring side (-X side) is connected to the secondary measuring section 13. The secondary measuring side (-X side) is the side of the secondary measuring section 13 in the measurement axis direction X.

[0019] The housing section 122 is a part equipped with a mechanism for automatically housing, for example, a string-shaped member such as a key reel. This housing section 122 is located on the sub-measurement side (-X side) of the main measurement section 11 and inside the housing section 14. The housing section 122 includes a housing casing 1221 formed in a cylindrical shape from a material such as plastic.

[0020] The housing 1221 has an internal storage space (not shown). Furthermore, the housing 1221 has a hole-like storage opening 1222 at its sub-measurement side (-X side), which is slightly larger than the cross-sectional shape of the expandable portion 121 formed along the measurement axis X. A spring reel (not shown) is positioned within the internal storage space of the housing 1221. The spring reel is a component in which the spring is biased to rotate in one direction relative to a rotatable axis, and corresponds to the automatic storage mechanism of a typical key reel. One end of the telescopic section 121 on the main measuring side (+X side) is inserted through the housing opening 1222 and connected to the rotation axis of the spring reel. The spring reel generates a contraction force that winds the telescopic section 121 onto the rotation axis, thereby housing the telescopic section 121 inside the housing casing 1221. This contraction force is set to be smaller than the external force generated when the user 2 removes the housed telescopic section 121.

[0021] The shape, material, and configuration of the guidance unit 12 are not particularly limited, as long as they guide the main measurement unit 11 and the sub-measurement unit 13 so that they are arranged parallel to and opposite each other in the measurement axis direction X, and can extend and retract in the measurement axis direction X. For example, the guide section 12 is formed entirely in a string shape and is provided so that its entire volume is housed in the housing section 122, but it may also be provided so that only a portion of it can be housed. Furthermore, although the guide section 12 is formed in the shape of a single string, it may also have multiple guide sections 12, similar to conventional goniometers. Furthermore, although the telescopic section 121 is extended and retracted by a spring reel, it may also be made of an expandable material such as rubber, or it may be made expandable and retractable by other means, such as a structure that changes the length of the arm by folding a rigid member. Furthermore, although the housing section 122 is located inside the housing section 14 to suppress deflection of the telescopic section 121, it may be formed integrally with the sub-measurement section 13, or it may be located at any position in the induction section 12. Furthermore, the measurement switch 112 is a physical button that can be easily operated while being held, but it may also be a sensor-type button or a voice-input type.

[0022] <Sub-measurement unit> The sub-measuring unit 13 is the part positioned on the measurement point 31 during measurement and corresponds to the movable side in angle measurement. This sub-measuring unit includes a sub-gripping unit (gripping part) 131 and a string connecting part 132. The sub-gripping unit 131 is located outside the housing unit 14 and on the sub-measuring side (-X side).

[0023] The secondary gripping portion 131 is formed in an annular shape in plan view, for example, from a material such as aluminum. The space inside this secondary gripping portion 131 is formed as a through-hole similar in shape to the first joint of a typical thumb, but slightly larger. Furthermore, the space inside the secondary gripping portion 131 is formed in substantially the same shape as the main gripping portion 111. Moreover, the entire surface of the secondary gripping portion 131 is curved and has no corners. User 2 is able to grasp the sub-measuring unit 13 by inserting their thumb through the sub-gripping unit 131 from the front side (+Z side).

[0024] The string connection portion 132 is a block-shaped part formed from a material such as aluminum. One end of the string connection portion 132 on the main measurement side (+X side) is integrally formed with the end of the telescopic portion 121 on the secondary measurement side (-X side). Furthermore, the secondary measurement side (-X side) of the string connection portion 132 has a through hole that is slightly larger than the cross-sectional shape of the secondary gripping portion 131, along the short side direction Y, and the secondary gripping portion 131 is detachably inserted through it. The short side direction Y is perpendicular to the measurement axis direction X and the gripping direction Z, and is the direction along the short side of the posture motion measuring instrument 1 in a plan view.

[0025] The shape, material, and configuration of the sub-measuring unit 13 are not particularly limited, as long as they can be placed on the measurement point 31. For example, the sub-measuring unit 13 corresponds to the movable side in angle measurement, but it may also be used as the immovable side (origin). Furthermore, since the sub-measuring unit 13 can measure the relative angle θ by moving between the measurement points 31, it is not necessary to have multiple sub-measuring units. However, a configuration in which two sub-measuring units measure without movement is also possible, similar to conventional goniometers. Furthermore, the secondary gripping portion 131 is formed in a shape that can be easily grasped with the thumb and is less likely to slip when gripped, but it may also be formed in a polygonal shape or in a rod shape that can be grasped by gripping it. Furthermore, although the sub-gripping portion 131 is connected to the guide portion 12 via the string connecting portion 132 to facilitate attachment and detachment, it may also be directly connected to the guide portion 12 and provided in a way that prevents attachment and detachment. Furthermore, the auxiliary gripping portion 131 is formed in a shape without corners so as to come into contact with the patient's body 3 during measurement, but it may also have a shape that includes corners.

[0026] <Housing> The housing 14 is the exterior part of the posture motion measuring instrument 1, formed from a material such as plastic. This housing 14 is located on the sub-measuring side (-X side) of the main measuring unit 11 and is formed integrally with the main measuring unit 11. The housing 14 is also formed in a box shape that encloses the housing 122 and a control unit (not shown) inside. The housing 14 is formed as a roughly rectangular shape that is long in the measurement axis direction X when viewed from above. The long side of the housing 14, including the main measuring unit 11, is formed to be approximately 100 mm, which is the length at which the small joint 3b (see Figure 8) can be measured. The housing 14 is also formed from a curved surface on all sides and has no corners. The housing 14 is equipped with a communication section 141, a guide section 142, a display monitor 143, a control switch 144, and a connection port 145.

[0027] The communication portion 141 is a through-hole formed on one of the surfaces of the housing portion 14 that is substantially parallel to the gripping direction Z, on the sub-measuring side (-X side). This communication portion 141 is formed to align with the measurement axis direction X, and the telescopic portion 121 is inserted through it. Furthermore, in a front view, the communication portion 141 is formed to be slightly larger than the cross-sectional shape of the telescopic portion 121 and smaller than the chord connection portion 132. The front view is the view from the measurement axis direction X. In the front view, the centers of the main measuring portion 11, the housing portion 122, the housing opening 1222, and the communication portion 141 are located at substantially the same position. With the telescopic section 121 retracted, the string connection section 132 is locked at the secondary measurement side (-X side) of the communication section 141.

[0028] The guide portion 142 is a part that slightly protrudes from the rear side (-Z side) of the housing portion 14 toward the secondary measurement side (-X side). In a plan view, the guide portion 142 has a convex guide groove 1421 formed along the measurement axis direction X. In a plan view, the guide portion 142 also has two uneven support grooves 1422 formed in the measurement axis direction X, extending at a predetermined angle from one end of the main measurement side (+X side) of the guide groove 1421 toward the other end. User 2 can confirm that the main measuring unit 11 and the sub-measuring unit 13 are facing each other along the measurement axis X when the guide unit 12 and the guide groove 1421 overlap in a front view. User 2 can also confirm the direction to be corrected based on the positional relationship between the guide unit 12 and the support groove 1422.

[0029] The display monitor 143 is the part that displays measurement results from the posture and motion measuring device 1, and is electrically connected to the display unit corresponding to the angle notification unit, which will be described later. This display monitor 143 is located on the front side (+Z side) of the housing unit 14. The content displayed by the display monitor 143 is controlled by the control unit. User 2 can easily view the display monitor 143 while gripping the main gripping part 111 and the sub-gripping part 131.

[0030] The control switch 144 is, for example, a physical button that can be pushed, and is electrically connected to the control unit. This control switch 144 is provided on the front side (+Z side) and at both ends in the short side direction Y of the housing 14. Multiple control switches 144 perform operations assigned by the settings of the control unit. The control switches 144 can be assigned any operation, such as performing a measurement, calibrating the measured value (compass calibration), and switching the display content of the display monitor 143. By assigning the measurement execution operation to the control switch 144, measurement can be easily performed even when the main gripping part 111 and the sub-gripping part 131 are not gripping. Furthermore, by assigning the calibration operation to the control switch 144, calibration related to the measurement coordinates can be performed, ensuring measurement accuracy. Additionally, by assigning the inversion of the display content to the control switch 144, the display monitor 143 can be changed to match the orientation of the posture motion measuring device 1 and the user 2, ensuring visibility.

[0031] The connection port 145 is a port provided to allow connection to an external device, for example, by inserting the end of a connection cable, and is electrically connected to the control unit. This connection port 145 is located on the front side (+Z side) of the communication section 141. The control unit is provided to enable data transmission and reception with an external device via the connection cable connected to the connection port 145. The connection port 145 is also electrically connected to a battery (not shown) via the connection cable. This battery supplies power to the control unit. The battery can receive power from an external device via the connection cable connected to the connection port 145 and store it internally. When no connection cable is connected, connection port 145 is sealed by a protective cover, such as a silicone cover, to ensure water and dust resistance.

[0032] The shape, material, and configuration of the housing 14 are not particularly limited, as long as it encloses the control unit and is equipped with an angle notification unit. For example, the housing portion 14 is formed integrally with the main measuring portion 11 to suppress deflection of the expandable portion 121, but it may also be formed as a separate component. In that case, the housing portion 14 may be connected to the main measuring portion 11 and the sub-measuring portion 13 via two guide portions 12. Furthermore, the housing 14 is equipped with a guide section 142 to confirm that the main measurement unit 11 and the sub-measurement unit 13 are facing each other along the measurement axis direction X, but other confirmation means may be provided instead of the guide section 142. For example, the housing 14 may be configured to notify that the main measurement unit 11 and the sub-measurement unit 13 are facing each other along the measurement axis direction X using a display monitor 143 or indicator lights. Furthermore, the housing 14 includes a display monitor 143 connected to the display unit as an angle notification unit, but it may also include other angle notification units. For example, it may be a means of transferring data to an external device. Furthermore, although the housing 14 is equipped with a control switch 144 to improve the operability of the posture and motion measuring device 1, it may also be configured without the control switch 144. Furthermore, although the housing portion 14 is formed without corners so as to come into contact with the patient's body 3 during measurement, it may also have a shape that includes corners. Furthermore, although the control unit is powered by electricity stored in the battery via the connection port 145 for improved convenience, it may also be configured to not have the connection port 145 and the battery, and power may be supplied from a battery or the like.

[0033] <Department Head> The control unit is a computer equipped with a processor such as a CPU and memory, capable of executing programs. This control unit comprises an execution unit, a recording unit, an arithmetic unit, a display unit, and a communication unit, each of which is configured to communicate with each other.

[0034] The execution unit receives operation commands from the measurement switch 112 or the control switch 144 and executes a pre-set measurement execution program.

[0035] The recording unit is the part that records the programs executed by the execution unit. The recording unit also records data such as the three-dimensional coordinates obtained by the measurement program executed by the execution unit, the time the measurement was performed, and the results of calculations performed by the calculation unit.

[0036] As shown in Figure 4, the calculation unit is the part that calculates the relative angle θ based on the three-dimensional coordinates obtained by the measurement program recorded by the recording unit and the pre-set calculation program. Figure 4 shows the state in which the relative angle θ is measured using the posture motion measuring device 1. The calculation unit's processing involves, for example, referencing two consecutive sets of three-dimensional coordinates recorded by the recording unit, and setting the measurement axis X in the first recorded three-dimensional coordinate as the reference axis. Subsequently, using the later recorded three-dimensional coordinate as the relative axis, it calculates the tilt angle and rotation angle, which are relative angles θ, as measurement results.

[0037] The display unit controls the display monitor 143 and corresponds to the angle notification unit, which displays measurement results calculated by the calculation unit. The display unit is also designed to display information such as the battery level, communication status with external devices, and time.

[0038] The communication unit is the part that communicates with external devices, for example, via wireless communication. The recording unit receives programs from the outside through this communication unit. Conversely, the recording unit outputs recorded information to the outside through this communication unit.

[0039] Furthermore, the configuration of the control unit is not particularly limited as long as it is capable of calculating the measurement results. For example, the recording unit records three-dimensional coordinates for high-precision measurement, but it may also be configured to record two-dimensional coordinates, similar to conventional goniometers. Furthermore, the calculation unit refers to three-dimensional coordinates for high-precision measurement and calculates the tilt angle and rotation angle, which are relative angles θ, as measurement results. This allows for the measurement of angles related to body posture and displacements related to movements other than joints, in addition to joint angles. However, it may also be configured to refer to two-dimensional coordinates and calculate a single relative angle θ as a measurement result, similar to conventional goniometers. Furthermore, although the communication unit is provided to enable wireless communication for improved operability, it may also be wired, and it may be configured in a way that does not provide means for communication with external devices and instead performs data transfer via a storage medium.

[0040] <Measurement flow of the embodiment> The posture and motion measuring device 1 constructed in this manner can perform angle measurements according to the flow shown in Figure 5. Figure 5 shows the measurement flow using the posture and motion measuring device 1. Figure 6 shows the state in which the reference measurement procedure S6 of the major joint 3a is performed. Figure 7 shows the state in which the relative measurement procedure S10 of the major joint 3a is performed.

[0041] The starting procedure S1 is a procedure to confirm the plan for measuring the angle of the major joint 3a of the patient's body 3, as shown in Figure 6. User 2 defines the first measurement point 311, which is the reference point 310 that serves as the origin and one of the measurement points 31 that forms the reference axis, as the three measurement points 31 set on the major joint 3a. The other measurement point 31 that forms the relative axis is defined as the second measurement point 312. After the start procedure S1 is completed, the process proceeds to the gripping procedure S2.

[0042] Gripping procedure S2 is the procedure for gripping the posture and motion measuring device 1. User 2 inserts one thumb of their hand into the main gripping part 111 and grips the main measuring part 11. User 2 also inserts the other thumb into the secondary gripping part 131 and grips the secondary measuring part 13. After the gripping procedure S2 is completed, the process moves on to the reference placement procedure S3.

[0043] Reference positioning procedure S3 is a procedure for aligning the reference point 310. User 2 positions the main measuring unit 11 directly above the reference point 310. After completing the standard placement procedure S3, proceed to the first placement procedure S4.

[0044] The first positioning procedure S4 is a procedure for aligning the first measurement point 311. With the main measurement unit 11 positioned directly above the reference point 310, the user 2 positions the sub-measurement unit 13 directly above the first measurement point 311. At this time, the user 2 performs an action to separate the sub-measurement unit 13 from the main measurement unit 11 along the measurement axis direction X. Due to the external force associated with this action, the telescopic unit 121 housed in the housing unit 122 is pulled out of the housing unit 122 and extends. When the sub-measurement unit 13 is positioned directly above the first measurement point 311, the guide unit 12 connects the main measurement unit 11 and the sub-measurement unit 13 in a straight line without bending due to the contraction force of the spring reel. After the completion of the first placement procedure S4, the process proceeds to the placement confirmation procedure S5.

[0045] The position confirmation procedure S5 is a procedure for confirming and adjusting the positions of the main measurement unit 11 and the sub-measurement unit 13. User 2 adjusts the positions of the main measurement unit 11 and the sub-measurement unit 13 so that the guide unit 12 and the guide groove 1421 overlap when viewed from the front. After completing the placement confirmation procedure S5, proceed to the reference measurement procedure S6.

[0046] The reference measurement procedure S6 is a procedure for measuring reference coordinates. User 2 inputs the measurement switch 112 of the main gripping part 111 using the thumb and index finger. Upon input, the measurement switch 112 transmits an operation command to the execution unit. The execution unit, upon receiving the operation command, executes the measurement program and acquires the current three-dimensional coordinate data of the posture and motion measuring device 1. After the completion of the reference measurement procedure S6, the process proceeds to the reference calculation procedure S7.

[0047] The reference calculation procedure S7 is the procedure in which the calculation unit sets the reference coordinates. The recording unit records the three-dimensional coordinate data acquired by the measurement switch 112 program. The calculation unit refers to the three-dimensional coordinate data acquired by the recording unit and sets it as the reference axis connecting the reference point 310 and the first measurement point 311. The display unit notifies the display monitor 143 that the setting of the reference axis is complete. After the completion of the reference calculation procedure S7, the process proceeds to the relative placement procedure S8.

[0048] Relative positioning procedure S8 is a procedure for aligning the second measurement point 312, as shown in Figure 7. After confirming the notification on the display monitor 143, user 2 positions the main measurement unit 11 directly above the reference point 310, and then moves the sub-measurement unit 13 from directly above the first measurement point 311 to directly above the second measurement point 312. When the sub-measurement unit 13 is positioned directly above the second measurement point 312, the guide unit 12 connects the second measurement point 312 and the sub-measurement unit 13 in a straight line without bending due to the contraction force of the spring reel. After the relative placement procedure S8 is completed, the process proceeds to the placement confirmation procedure S9.

[0049] The position confirmation procedure S9 is a procedure for confirming and adjusting the positions of the main measurement unit 11 and the sub-measurement unit 13. User 2 adjusts the positions of the main measurement unit 11 and the sub-measurement unit 13 so that the guide unit 12 and the guide groove 1421 overlap when viewed from the front. After completing the placement confirmation procedure S9, the process proceeds to the relative measurement procedure S10.

[0050] Relative measurement procedure S10 is a procedure for measuring relative coordinates. User 2 inputs the measurement switch 112 of the main gripping part 111 using the thumb and index finger. Upon input, the measurement switch 112 transmits an operation command to the execution unit. The execution unit, upon receiving the operation command, executes the measurement program and acquires the current three-dimensional coordinate data of the posture and motion measuring device 1. After the relative measurement procedure S10 is completed, the process proceeds to the relative calculation procedure S11.

[0051] The relative calculation procedure S11 is the procedure in which the calculation unit calculates relative coordinates. The recording unit records the three-dimensional coordinate data acquired by the measurement program. The calculation unit refers to the three-dimensional coordinate data acquired by the recording unit and sets it as the relative axis connecting the reference point 310 and the second measurement point 312. Then, it calculates the inclination angle and rotation angle, which are the relative angles θ of the relative axis with respect to the reference axis, as measurement results. The display unit displays the inclination angle and rotation angle as measurement results on the display monitor 143. After the relative calculation procedure S11 is completed, the process proceeds to the evaluation procedure S12.

[0052] Evaluation procedure S12 is a procedure for evaluating the measurement results. User 2 can evaluate the range of motion of the joint based on the measurement results displayed on the display monitor 143 and reflect this in the treatment plan for the patient.

[0053] Furthermore, the measurement procedure and content of the posture and motion measuring device 1 are not limited to those described above, and may also measure angles related to body posture or displacements other than those related to joints. For example, the posture and movement measuring device 1 may measure the tilt (distortion) of body parts 3 other than joints, such as the shoulders, neck, and pelvis. In this case, the posture and movement measuring device 1 can be widely used in patient treatment planning, etc., by performing an evaluation related to postural movement of body parts 3 in addition to evaluating joint range of motion. This evaluation of joint range of motion and postural movement may be performed individually or in combination. Furthermore, since the posture and motion measuring device 1 has the functions of both an angle measuring device and an inclination measuring device, and can be widely used, it does not particularly limit the objects of measurement. For example, it may be used for measuring angles to horizontally position equipment and facilities installed in medical facilities. In that case, medical facilities do not need to have multiple measuring devices for different purposes.

[0054] <Effects of the Embodiment> According to the posture motion measuring instrument 1 of this embodiment, the main measurement unit 11 is the part positioned on the measurement point 31 during measurement and corresponds to the stationary side (origin) in angle measurement. The sub-measurement unit 13 is the part positioned on the measurement point 31 during measurement and corresponds to the movable side in angle measurement. The guidance unit 12 is the part that guides the main measurement unit 11 and the sub-measurement unit 13 so that they are positioned parallel to and opposite the measurement axis direction X, and corresponds to the arm portion in conventional posture motion measuring instruments. The display monitor 143 connected to the display unit corresponds to the angle notification unit that displays the measurement results etc. from the posture motion measuring instrument 1, and is a monitor electrically connected to the control unit. The telescopic unit 121 is configured to extend and retract. One end of the telescopic unit 121 on the main measurement side (+X side) is connected to the housing unit 122. The other end of the telescopic unit 121 on the sub-measurement side (-X side) is connected to the sub-measurement unit 13. Therefore, the posture and motion measuring device 1 can accurately measure angles regardless of the object being measured, as it sets the optimal length by extending or retracting the guidance unit 12 according to the object being measured.

[0055] According to the posture motion measuring device 1 of this embodiment, the guidance unit 12 is formed in the shape of a single string extending in one direction. The calculation unit can calculate the relative angle θ by moving the sub-measurement unit 13 from directly above the first measurement point 311 to directly above the second measurement point 312, with the main measurement unit 11 positioned directly above the reference point 310, after the recording unit has recorded the coordinates of the reference axis. Therefore, since the posture and motion measuring device 1 calculates relative coordinates based on reference coordinates in its calculation unit, it does not require multiple guidance units 12, resulting in excellent portability and ease of operation.

[0056] According to the posture motion measuring instrument 1 of this embodiment, the housing section 122 is a part equipped with a mechanism for automatically housing a string-shaped member, such as a key reel. The spring reel generates a contraction force that winds the telescopic section 121 around the rotation axis, housing the telescopic section 121 inside the housing casing 1221. The user 2 performs an action that separates the sub-measuring section 13 from the main measuring section 11 along the measurement axis direction X. Due to the external force associated with this action, the telescopic section 121 housed in the housing section 122 is pulled out of the housing section 122 and extends. Therefore, the posture and motion measuring device 1 is highly portable because the guidance unit 12 is housed when not in use, and extends to the optimal length by the external force of the user 2 when in use.

[0057] According to the posture and motion measuring device 1 of this embodiment, the main gripping portion 111 and the sub-gripping portion 131 are formed in an annular shape in plan view. Furthermore, the internal space of the main gripping portion 111 and the sub-gripping portion 131 is formed in the shape of a through-hole that is similar to and slightly larger than the shape of the first joint of a typical thumb. Therefore, the posture and movement measuring device 1 can be easily and securely gripped by the user 2 by inserting their thumbs into the main gripping part 111 and the sub-gripping part 131, resulting in high operability and good measurement efficiency.

[0058] According to the posture and motion measuring device 1 of this embodiment, the recording unit records data such as three-dimensional coordinates obtained by the measurement program executed by the execution unit, the time the measurement was performed, and the results of calculations performed by the calculation unit. The calculation unit calculates the relative angle θ based on the three-dimensional coordinates obtained by the measurement program recorded by the recording unit and a preset calculation program. Therefore, the posture and motion measuring device 1 has higher measurement accuracy because the control unit accurately calculates the relative angle θ as a measurement result and displays it on the display monitor 143.

[0059] According to the posture motion measuring device 1 of this embodiment, the calculation processing of the calculation unit refers to two consecutive sets of three-dimensional coordinates recorded by the recording unit, sets the measurement axis direction X in the first recorded three-dimensional coordinate as the reference axis, and then uses the second recorded three-dimensional coordinate as the relative axis to calculate the tilt angle and rotation angle, which are relative angles θ, as measurement results. Therefore, since the posture and motion measuring device 1 calculates the tilt angle and rotation angle, which are relative angles θ, as measurement results, it is possible to perform measurements with even greater reliability. Furthermore, since the posture and motion measuring device 1 has the functions of both an angle measuring device and an inclination measuring device, it is possible to evaluate not only the range of motion of joints but also the postural movements of the body 3 other than the joints, and it can be widely used in patient treatment planning, etc.

[0060] According to the posture and motion measuring device 1 of this embodiment, the display unit is provided to display information such as the remaining battery level, the communication status with external devices, and the time. The communication unit is the part that communicates with external devices via wireless communication. The recording unit outputs the information recorded externally via the communication unit. Therefore, since the posture and motion measuring device 1 notifies and outputs the measurement results via its display unit and communication unit, it is easy to confirm, collect, and utilize the measurement results.

[0061] According to the posture and motion measuring device 1 of this embodiment, the housing portion 14 is positioned on the sub-measuring side (-X side) of the main measuring portion 11 and is formed integrally with the main measuring portion 11. The communication portion 141 is a through hole formed on one of the surfaces of the housing portion 14 that is substantially parallel to the gripping direction Z, on the sub-measuring side (-X side). The housing casing 1221 has a hole-shaped housing opening 1222 formed at the end of the sub-measuring side (-X side), which is slightly larger than the cross-sectional shape of the expandable portion 121. When viewed from the front, the centers of the main measuring portion 11, the housing portion 122, the housing opening 1222, and the communication portion 141 are positioned at substantially the same location. Therefore, since the user 2 can easily position the main measurement unit 11 and the sub-measurement unit 13 in a direction along the measurement axis X by the guide unit 12 housed along the measurement axis X, the operability is further improved and the measurement accuracy is also high.

[0062] According to the posture and motion measuring device 1 of this embodiment, the measurement switch 112 is positioned on the inner surface of the main gripping portion 111, on the back side (-Z side) and the main measurement side (+X side). The user 2 is able to operate the measurement switch 112 by pressing with their index finger and thumb (the action of pinching the measurement switch 112 between the thumb and index finger) while inserting their thumb into the main gripping portion 111. Therefore, the posture and motion measuring device 1 allows the user to input the measurement switch 112 while holding the main measurement unit 11 and the sub-measurement unit 13, which further enhances operability and measurement accuracy.

[0063] According to the posture and motion measuring device 1 of this embodiment, the housing portion 14 is formed as a substantially rectangular shape that is long in the measurement axis direction X when viewed from above. Furthermore, the long side of the housing portion 14, which includes the main measuring unit 11, is formed to be approximately 100 mm, which is sufficient to measure the small joints 3b (see Figure 7). Therefore, since the posture and motion measuring device 1 is smaller than conventional posture and motion measuring devices, it is even more portable.

[0064] Although embodiments of the present invention have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments, and design modifications and the like are also included within the scope of the gist of the present invention. Furthermore, the components shown in the above-described embodiments and the following modifications can be combined as appropriate. In the following explanation, components that are common to those already explained will be denoted with the same symbols, and redundant explanations will be omitted.

[0065] <Variation> In this embodiment, the posture and movement measuring device 1 measures the major joints 3a of the patient's body 3, but the use of the posture and movement measuring device 1 is not limited to this. The posture and movement measuring device 1 may also be used to measure the minor joints 3b of the patient's body 3, as shown in Figure 8-9.

[0066] A modified posture and motion measuring device 1 will be described with reference to Figures 5 and 8-9. Figure 8 shows the posture and motion measuring device 1 in the state of performing the reference measurement procedure S6 for the small joint 3b. Figure 9 shows the state of performing the relative measurement procedure S10 for the small joint 3b. The modified posture and motion measuring device 1 can perform measurements in the same way as the posture and motion measuring device 1 of the embodiment, following the flow shown in Figure 5. The modified posture and motion measuring device 1 has the same material, shape, and configuration as the posture and motion measuring device 1 of the embodiment.

[0067] <Measurement flow for modified examples> The starting procedure S1 is a procedure to confirm the plan for measuring the angles of the patient's body 3 small joints 3b, as shown in Figure 8. User 2 defines the first measurement point 311 as the reference point 310, which is the origin, and one of the measurement points 31 that forms the reference axis, among the three measurement points 31 set on the small joints 3b. The other measurement point 31 that forms the relative axis is defined as the second measurement point 312. After the start procedure S1 is completed, the process proceeds to the gripping procedure S2.

[0068] Gripping procedure S2 is the procedure for gripping the posture and motion measuring device 1. User 2 grips the housing portion 14 of the posture and motion measuring device 1 without using the main gripping portion 111 and the sub-gripping portion 131. After the gripping procedure S2 is completed, the process moves on to the reference placement procedure S3.

[0069] Reference positioning procedure S3 is a procedure for aligning the reference point 310. User 2 positions the main measuring unit 11 (the main measuring side (+X side) of the housing unit 14) adjacent to the reference point 310. After completing the standard placement procedure S3, proceed to the first placement procedure S4.

[0070] The first positioning procedure S4 is a procedure for aligning the first measurement point 311. With the main measurement unit 11 adjacent to the reference point 310, the user 2 positions the secondary measurement side (-X side) of the housing unit 14 adjacent to the first measurement point 311. At this time, the guidance unit 12 is housed in the housing unit 122. The secondary measurement unit 13 may be detached from the posture motion measuring device 1, or it may be stored in the housing unit 14. After the completion of the first placement procedure S4, the process proceeds to the placement confirmation procedure S5.

[0071] The position confirmation procedure S5 is a procedure for confirming and adjusting the position of the posture and motion measuring device 1. User 2 adjusts the position of the posture and motion measuring device 1 so that the straight line connecting the reference point 310 and the first measurement point 311 is parallel to the guide groove 1421 when viewed from the front. After completing the placement confirmation procedure S5, proceed to the reference measurement procedure S6.

[0072] Reference measurement procedure S6 is a procedure for measuring reference coordinates. User 2 inputs the control switch 144 of the housing unit 14. Upon input, the control switch 144 transmits an operation command to the execution unit. Upon receiving the operation command, the execution unit executes the measurement program and acquires the current three-dimensional coordinate data of the posture and motion measuring device 1. After the completion of the reference measurement procedure S6, the process proceeds to the reference calculation procedure S7.

[0073] The reference calculation procedure S7 is the procedure in which the calculation unit sets the reference coordinates. The recording unit records the three-dimensional coordinate data acquired by the measurement program. The calculation unit refers to the three-dimensional coordinate data acquired by the recording unit and sets it as the reference axis connecting the reference point 310 and the first measurement point 311. The display unit notifies the display monitor 143 that the setting of the reference axis is complete. After the completion of the reference calculation procedure S7, the process proceeds to the relative placement procedure S8.

[0074] The relative positioning procedure S8 is a procedure for aligning the second measurement point 312, as shown in Figure 9. After confirming the notification on the display monitor 143, the user 2 places the posture and movement measuring device 1 against the patient's small joint 3b and prompts the patient to move the small joint 3b. Here, the second measurement point 312 is set on the movable side of the small joint 3b after the movement. After the relative placement procedure S8 is completed, the process proceeds to the placement confirmation procedure S9.

[0075] The position confirmation procedure S9 is a procedure for confirming and adjusting the position of the posture and motion measuring device 1. User 2 adjusts the position of the posture and motion measuring device 1 so that the straight line connecting the reference point 310 and the second measurement point 312 is parallel to the guide groove 1421 when viewed from the front. After completing the placement confirmation procedure S9, the process proceeds to the relative measurement procedure S10.

[0076] Relative measurement procedure S10 is a procedure for measuring relative coordinates. User 2 inputs the control switch 144 of the housing unit 14. Upon input, the control switch 144 transmits an operation command to the execution unit. Upon receiving the operation command, the execution unit executes the measurement program and acquires the current three-dimensional coordinate data of the posture and motion measuring device 1. After the relative measurement procedure S10 is completed, the process proceeds to the relative calculation procedure S11.

[0077] The relative calculation procedure S11 is the procedure in which the calculation unit calculates the relative angle θ. The recording unit records the three-dimensional coordinate data acquired by the measurement program. The calculation unit refers to the three-dimensional coordinate data acquired by the recording unit and sets it as the relative axis connecting the reference point 310 and the second measurement point 312. Then, it calculates the tilt angle and rotation angle, which are the relative angles θ of the relative axis with respect to the reference axis, as measurement results. The display unit displays the tilt angle and rotation angle as measurement results on the display monitor 143. After the relative calculation procedure S11 is completed, the process proceeds to the evaluation procedure S12.

[0078] Evaluation procedure S12 is a procedure for evaluating the measurement results. User 2 can evaluate the range of motion of the joint based on the measurement results displayed on the display monitor 143 and reflect this in the treatment plan for the patient.

[0079] <Effects of the modified example> According to the modified posture and motion measuring device 1, during measurement, the main measurement side (+X side) of the housing 14 is positioned adjacent to the reference point 310. Furthermore, with the main measurement unit 11 positioned near the reference point 310, the secondary measurement side (-X side) of the housing 14 is positioned adjacent to the first measurement point 311. Therefore, when measuring the small joint 3b, the posture and motion measuring device 1 can house the guidance unit 12 and use the housing unit 14 to perform the measurement. As a result, the angles of the large joint 3a and small joint 3b, which have different measurement area sizes, can be accurately measured using the same posture and motion measuring device 1. [Examples]

[0080] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to the following examples.

[0081] The posture and motion measuring device 1 of the present invention was compared with a conventional angle measuring device. The following comparison assumes operation under the same conditions. Figure 10 shows the results of comparing the performance of the posture and motion measuring device 1 of the present invention with comparative examples 1-3.

[0082] Example 1 is the posture and motion measuring device 1 described in the present invention. Comparative Example 1 is a simple, analog-type medical angle measuring instrument made of plastic. Comparative Example 2 is a metal ruler-type analog medical angle measuring instrument. Comparative Example 3 is a metal ruler-type digital medical angle measuring instrument.

[0083] Regarding the measurable angle, as shown in Figure 10, Comparative Example 1 displays the measurement results in 5-degree increments. Comparative Examples 2-3 display the measurement results in 1-degree increments. On the other hand, Example 1 allows the measurable angle to be set to a maximum of 0.1 degrees as needed, demonstrating excellent performance.

[0084] Regarding portability, Comparative Examples 1-3 are large and heavy because they lack a function to extend and retract the measuring arm. On the other hand, in Example 1, the guide unit 12 is housed when carried, resulting in a smaller size when transported. Furthermore, since the guide unit 12 corresponding to the measuring arm is a single unit and is formed in a string shape, it is lightweight and exhibits excellent performance.

[0085] Regarding the use of different devices, Comparative Examples 1-2 require multiple sizes because the optimal measurement length varies depending on the arm being measured. Comparative Example 3 can be applied to a certain range of measurement lengths, but its large size makes it difficult to measure small joints. On the other hand, Example 1 demonstrates excellent performance because it can be suitably applied to both small and large joints.

[0086] Regarding the visualization and estimation of measurement points, Comparative Examples 1 and 3 require accurate visual confirmation and positioning of the measurement points. Comparative Example 2 requires accurate visual confirmation and positioning in a three-dimensional joint measurement situation where the measuring arm cannot be in contact with the patient's body. On the other hand, Example 1 has only one guide unit 12 corresponding to the measurement arm, and since it can measure three-dimensional coordinates, visual alignment of the measurement point is unnecessary in any situation, demonstrating superior performance.

[0087] Regarding considerations for contact with the subject, Comparative Examples 1-3 have measuring arms and housings with corners, so care must be taken when bringing them into contact with the patient's body. On the other hand, Example 1 has no corners in the main measuring unit 11, sub-measuring unit 13, and housing unit 14, so it does not cause discomfort to the patient during use and exhibits excellent performance.

[0088] Regarding the necessity of horizontal viewing of the axis, Comparative Examples 1-3 require horizontal viewing because they use multiple measuring arms to perform measurements, and therefore need to be positioned parallel to the measurement plane. On the other hand, Example 1 demonstrates superior performance because it performs measurements using a single guide unit 12, thus eliminating the need for horizontal viewing of the axis in most situations.

[0089] Regarding the visibility of data reading, Comparative Examples 1-2 have poor visibility due to their analog display. On the other hand, Comparative Example 3 and Example 1, being digital displays, exhibit high visibility and superior performance.

[0090] Regarding data recording and transmission, Comparative Examples 1-2 are analog and therefore lack means for recording data. Comparative Example 3 is equipped to output measurement data via memory. On the other hand, Example 1 is capable of transferring data to external devices via wireless communication and demonstrates excellent performance.

[0091] Regarding the use of vertical and horizontal lines, Comparative Example 1-2 cannot be configured to use vertical and horizontal lines to measure the relative angles of two-dimensional coordinates. On the other hand, Comparative Example 3 and Example 1 can use vertical and horizontal lines to calculate the relative angles of three-dimensional coordinates and demonstrate excellent performance.

[0092] Regarding the measurement of rotation (torsion) angle, Comparative Example 1-2 cannot measure the rotation angle because it measures the relative angle in two-dimensional coordinates. On the other hand, Comparative Example 3 and Example 1 are capable of measuring rotation angles in order to calculate relative angles in three-dimensional coordinates, and demonstrate excellent performance.

[0093] Regarding the measurement procedure, Comparative Examples 1-3 use two measuring arms, resulting in a longer measurement procedure and longer measurement time. On the other hand, in Example 1, measurement is performed with a single guide unit 12, and the measurement switch 112 can be input while the object is being held, resulting in a shorter measurement procedure and measurement time, and demonstrating excellent performance.

[0094] Regarding the burden on the patient, Comparative Examples 1-3 have multiple corners, which may cause discomfort when they come into contact with the patient's body. Comparative Example 2, in particular, has a sharp metal measuring arm, which poses a high risk of contact. On the other hand, Example 1, lacking corners, is less likely to cause discomfort when it comes into contact with the patient's body, demonstrating superior performance.

[0095] Regarding the accuracy of the measurements, Comparative Example 1 has low measurement accuracy because it performs a simple measurement. Comparative Examples 2 and 3 have a certain degree of measurement accuracy when used appropriately, but the measurement accuracy varies depending on various conditions such as the user's skill level and the size of the object being measured. On the other hand, Example 1 exhibits excellent performance because it is easy to operate and does not depend on the user's skill level, and can measure accurately regardless of the size of the object being measured. [Explanation of symbols]

[0096] 1. Posture and movement measuring device 11 Main measurement section 12 Guidance part 13 Sub-measurement unit 14. Enclosure 111 Main grip part (grip part) 112 Measuring switch 121 Telescopic part 122 Storage Unit 131 Deputy Control Department (Control Department) 141 Connecting Parts 144 control スイッチ 310 benchmark point 311 First measuring point 312 Second measuring point X Measurement axis direction Z controls the direction θ opposite angle

Claims

1. Main measurement unit, Sub-measurement unit, An induction unit is positioned between the main measurement unit and the sub-measurement unit and formed to connect the main measurement unit and the sub-measurement unit, It includes an angle notification unit that notifies the measurement result, The aforementioned guide portion has at least a portion that expands and contracts, The angle notification unit, A reference axis is set connecting a reference point where either the main measurement unit or the sub-measurement unit is located, and a first measurement point where the other of the main measurement unit or the sub-measurement unit is located. The relative angle of the relative axis connecting the reference point on which one of the aforementioned components is located and the second measurement point on which the other component is located is notified as the measurement result. Posture and movement measuring device.

2. The main measurement unit, the sub-measurement unit, and the induction unit are each provided in one unit. The angle notification unit notifies the relative angle of the relative axis with respect to the reference axis as the measurement result when the other object, which is positioned at the first measurement point, moves to the second measurement point after the reference axis has been set. The posture and motion measuring device according to claim 1.

3. The aforementioned expandable portion is formed by an expandable member. The posture and motion measuring device according to claim 1.

4. The guide portion includes a housing portion that houses the extendable portion so as to retract it into the interior. The aforementioned expandable portion is It shrinks when housed in the aforementioned housing section, It extends when removed from the aforementioned housing section. The posture and motion measuring device according to claim 2.

5. The housing section is equipped with a spring reel that is biased in a state that generates a contraction force that pulls the telescopic section inward. The aforementioned expandable portion is It contracts due to the contraction force of the spring reel, The main measuring unit and the sub-measuring unit are stretched by an external force that separates them. The posture and motion measuring device according to claim 4.

6. The main measuring unit and the sub-measuring unit are each equipped with a gripping portion that is formed in an annular shape and faces the gripping direction, which is a direction perpendicular to the measuring axis. The posture and motion measuring device according to claim 2.

7. The inner space of the annular part of the gripping portion is formed in a shape similar to and slightly larger than the first joint of the thumb. The posture and motion measuring device according to claim 6.

8. The system includes a control unit that records, calculates, and outputs the measurement results, The control unit, An execution unit that receives operation commands and executes a measurement program, A recording unit that records the coordinates while the aforementioned measurement program is being executed, The system includes a calculation unit that calculates the measurement result based on the coordinates recorded by the recording unit, The posture and motion measuring device according to claim 6.

9. The control unit includes a display unit that displays the measurement results calculated by the calculation unit, The angle notification unit is the display unit, The posture and motion measuring device according to claim 8.

10. The control unit includes a communication unit that is provided to communicate with external devices, The communication unit is provided so as to be able to transmit the coordinates recorded by the recording unit and the measurement results calculated by the calculation unit to the external device. The angle notification unit is the communication unit, The posture and motion measuring device according to claim 8.

11. It comprises a housing that encloses the aforementioned housing, The aforementioned housing portion is Formed integrally with the main measuring unit, The aforementioned expandable portion is inserted through a through-hole-shaped communication portion formed along the measurement axis direction that connects the main measurement unit and the sub-measurement unit, In a front view from the direction of the measurement axis, the main measurement unit, the housing unit, and the communication unit are arranged so that their centers are at the same position. The posture and motion measuring device according to claim 4.

12. The control unit is equipped with a measuring switch that is electrically connected to the control unit, The measurement switch, upon receiving an input from an external source, transmits the operation command to the execution unit. The posture and motion measuring device according to claim 8.

13. The aforementioned measuring switch is It is a physical button that requires pressure to be pressed. In a plan view from the gripping direction, the following are arranged on the inside of the substantially ring-shaped gripping portion and on the side separated from the sub-measuring portion: The posture and motion measuring device according to claim 12.

14. The recording unit records the coordinates of the reference axis and the relative axis, respectively. The calculation unit calculates the relative angle of the relative axis with respect to the reference axis as the measurement result. The posture and motion measuring device according to claim 8.

15. The recording unit records the coordinates in three-dimensional coordinates, The calculation unit calculates the tilt angle and the rotation angle as the relative angles of the relative axis with respect to the reference axis, respectively, as the measurement results. The posture and motion measuring device according to claim 14.

16. The housing portion is formed to be 100 mm or less in the direction of the measurement axis. The posture and motion measuring device according to claim 11.

Images