Movable elbow support for ultrasonic image

Abstract

The invention relates to the technical field of elbow supports, in particular to a movable elbow support for ultrasonic images. The linear base body extends in the direction of the handrail and is fixed to the upper surface of the handrail, and the fan-shaped base body is located above the base body and can be driven by a linear reciprocating driving assembly to do linear reciprocating motion along the linear base body. The small arm supporting base body is located above the fan-shaped base body and can be driven by a rotating angle adjusting assembly to do reciprocating rotating angle motion in the radian direction of the fan-shaped base body, and the grip is located at the front end of the small arm supporting base body and can be driven by the rotating adjusting assembly to rotate. The posture of the arm of the human body is adjusted by controlling the movement of the linear reciprocating driving assembly, the rotation angle adjusting assembly and the rotation adjusting assembly, and the posture of the arm of the human body is adjusted by pulling the palm of the human body to drive the palm to do various movements in the ultrasonic inspection process. Therefore, a doctor can conveniently and quickly adjust the arm posture of the patient.

Description

Technical Field

[0001] The invention relates to the technical field of elbow supports, in particular to a mobile elbow support for ultrasonic imaging. Background Art

[0002] Ultrasound imaging of the arm is mainly used to evaluate the internal structure and functional status of the arm, including muscles, tendons, joints, nerves and blood vessels. Through the examination, the doctor can understand whether there are abnormalities in the arm, such as injury, inflammation, tumor, etc., and provide important basis for subsequent treatment. The doctor uses a high-frequency sound wave scanner (ultrasound probe) to scan the arm and capture the image. During the scanning process, the doctor may adjust the position and angle of the probe as needed to obtain a clearer image. During the doctor's scanning of the arm, the patient needs to cooperate with the doctor to adjust the arm posture in real time. Common arm postures are: 1. The arm is naturally straight or slightly bent, and the elbow joint is extended (the process also includes the palm facing up or down); 2. The arm is bent, and the angle between the upper arm and the forearm is approximately 90 degrees (the process also includes the palm facing up or down), and 3. The forearm is internally rotated, making a posture similar to Superman or chest beating (the process also includes the palm facing up or down). When the palm faces up or down in the adjustment of the above three types of postures, the twisting angle between the forearm and the upper arm will be different.

[0003] However, there is no good auxiliary device for adjusting arm posture during the existing arm ultrasound examination. Patients can only adjust their posture under the doctor's warning and guidance. Doctors have to face many patients every day. Repeated guidance on posture adjustment during ultrasound examination is not only inefficient, but also makes doctors feel bored. Based on the above situation, it is necessary to design a mobile elbow support for ultrasound imaging to assist patients in adjusting their posture. Summary of the invention

[0004] The present invention provides a mobile elbow support for ultrasonic imaging, which can adjust the posture of the human arm by pulling the human palm to drive the palm to perform various movements during ultrasonic examination, so as to facilitate doctors to quickly adjust the arm posture of patients.

[0005] The technical problem solved by the present invention is achieved by adopting the following technical solutions: The present invention provides a movable elbow support for ultrasonic imaging, which is fixed on the armrest of a swivel chair and comprises a straight base extending along the armrest and fixed to the upper surface of the armrest, a fan-shaped base located above the base and capable of being driven by a straight reciprocating drive component to make straight reciprocating motion along the straight base, a forearm support base located above the fan-shaped base and capable of being driven by a rotation angle adjustment component to make reciprocating angular motion along the arc direction of the fan-shaped base, and a grip located at the front end of the forearm support base and capable of being driven by a rotation adjustment component to rotate. When in use, a human body's forearm is placed on the forearm support base and a hand is held on the grip, and the posture adjustment of the human body's arm is achieved by controlling the movements of the straight reciprocating drive component, the rotation angle adjustment component and the rotation adjustment component.

[0006] Preferably, a controller is further included, and the linear reciprocating drive component, the angle adjustment component and the rotation adjustment component are all operated under the control of the controller.

[0007] Preferably, the linear reciprocating drive component, the angle adjustment component and the rotation adjustment component all use motors as power suppliers, and an angle sensor for monitoring the rotation angle of the motor is provided on the output end of the motor. The controller can always know the current posture of the human arm based on the signal of the angle sensor.

[0008] Preferably, a speed sensor for monitoring the rotation speed of the motor and a torque sensor for monitoring the torque at the output end of the motor are also provided on the output end of the motor. The output ends of the speed sensor and the torque sensor are connected to the input end of the controller to provide the controller with the speed signal and torque signal of the motor. When the controller determines that the current motor speed and / or torque is abnormal, the controller controls the motor to stop running.

[0009] Preferably, the rotation adjustment assembly includes a first motor fixed at the front end of the forearm support base and a turntable at the output end of the first motor, and the handle is fixed on the turntable.

[0010] Preferably, the rotation angle adjustment assembly includes a second motor fixed on the fan-shaped base, and the output end of the second motor is fixed to the bottom of the forearm support base.

[0011] Preferably, the rotation angle adjustment assembly further comprises a guide rail provided at the edge of the fan-shaped base and a support column fixed below the forearm support base and extending into the guide rail, wherein the bottom end of the support column contacts the surface of the guide rail via a ball bearing.

[0012] Preferably, the linear reciprocating drive assembly includes a third motor at one end of the linear base, a screw at the output end of the third motor, a drive block fixed to the bottom of the fan-shaped base and a guide groove for guiding the moving direction of the drive block, and the drive block and the screw are threadedly matched.

[0013] The beneficial effects of the present invention are as follows: by providing a movable elbow support to support the human body's arm, it can ensure that the patient maintains a stable posture for a long time during the ultrasonic examination. At the same time, through the traction movement of the palm, the arm posture switching of the human body in a sitting state is achieved, thereby improving the efficiency of posture switching during the ultrasonic examination. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the implementation scheme of the present invention or the technical scheme in the prior art, the drawings required for use in the implementation scheme or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation schemes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 This is a schematic diagram of the structure of the present invention installed on a swivel chair from a first perspective; Figure 2 A schematic diagram of the second viewing angle structure of the present invention installed on a swivel chair; Figure 3 It is a cross-sectional schematic diagram of the present invention installed on a swivel chair; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at A in the middle; Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at B in the middle; Figure 6 It is a schematic diagram of the structure of the present invention in the first state; Figure 7 It is a schematic diagram of the structure of the present invention in the second state; Figure 8 It is a schematic diagram of the disassembled structure of the present invention; Fig. 9 It is a schematic diagram of the structure of installing a sensor on the motor of the present invention.

[0016] In the figure, 1, swivel chair; 2, armrest; 3, forearm support base; 301, support column; 302, ball bearing; 4, first motor; 5, handle; 6, fan-shaped base; 601, guide rail; 7, second motor; 8, linear base; 9, third motor; 10, guide groove; 11, lead screw; 12, drive block; 13, controller; 14, angle sensor; 15, Hall speed sensor; 16, gear signal plate; 17, torque sensor. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0018] In order to enable those skilled in the art to know the inventive point of the present invention, the existing arm ultrasound examination process is first introduced. When performing ultrasound examination on the human arm, the patient needs to adjust a variety of arm postures, and the tissues at different positions on the arm have been fully and meticulously examined by ultrasound. Especially for the arm examination of the attachments of the elbow joint, more arm postures need to be adjusted. Common arm postures include: 1. The arm is naturally straight or slightly bent, that is, the forearm and the upper arm are basically in a straight line, and the elbow joint is extended; 2. The arm is bent, and the angle between the upper arm and the forearm is approximately 90 degrees; 3. The forearm is internally rotated, and a posture similar to Superman or chest beating is performed, etc. There are other arm posture adjustments that need to be performed, which will not be elaborated here. When ultrasound is performed near the elbow joint, the clarity of tissue observation is also closely related to the bending and twisting angles of the elbow joint. The elbow joint is a composite joint, which is composed of the lower end of the humerus, the olecranon fossa of the ulna, the head of the radius, the joint capsule, and the ligament. It mainly includes three joints: the humero-ulnar joint, the humeroradial joint, and the proximal radioulnar joint. These joints work together to allow the elbow to flex and extend over a wide range: the humero-ulnar joint: composed of the humeral trochlea and the olecranon fossa, it is the main flexion and extension joint of the elbow; the humeroradial joint: composed of the capitulum of the humerus and the articular fossa of the radial head, it is mainly involved in the rotation of the forearm; the proximal radioulnar joint: composed of the annular articular surface of the radial head and the radial notch of the ulna, it also participates in the rotation of the forearm. Therefore, in order to clearly know where the human elbow joint has lesions, it is necessary to perform ultrasonic examinations of the elbow joint at different bending and twisting angles. At present, in clinical practice, patients often adjust their arm posture under the guidance of a doctor. Doctors have to face many patients every day. Repeatedly guiding posture adjustment during ultrasound examinations is not only inefficient, but also makes doctors feel bored.

[0019] In order to facilitate the rapid assistance of patients in posture adjustment during arm ultrasound examination, the present invention provides a mobile elbow support for ultrasound imaging, which is installed on a patient's swivel chair 1 for use, and its movement is controlled by a controller 13, that is, the doctor issues corresponding instructions to the controller 13, and the controller 13 controls the mobile elbow support to move. Specifically, it drives the elbow joint to bend and twist by pulling the palm of the human body, thereby adjusting the posture of the human arm. At the same time, when pulling the palm of the human body, it also plays a role of lifting the forearm of the human body to reduce the load on the human arm in the process of maintaining a specific posture. Specifically, the mobile elbow support for ultrasound imaging provided by the present invention includes a straight base 8 extending along the direction of the armrest 2 and fixed to the upper surface of the armrest 2, a fan-shaped base 6 located above the base and capable of being driven by a straight reciprocating drive component to make a straight reciprocating motion along the straight base 8, and a forearm support base located above the fan-shaped base 6 and capable of being driven by an angle adjustment component to make a reciprocating angular motion along the arc direction of the fan-shaped base 6. The arm support base 3 is a base body 3, and a handle 5 is located at the front end of the forearm support base 3 and can be driven to rotate by a rotation adjustment component. When in use, the human forearm is placed on the forearm support base 3 and the hand is held on the handle 5. The posture of the human arm is adjusted by controlling the movement of the linear reciprocating drive component, the angle adjustment component and the rotation adjustment component. Specifically, no matter the movement of the linear reciprocating drive component, the angle adjustment component or the rotation adjustment component, the handle 5 will be driven to move. During the displacement of the handle 5, the palm of the human body will be pulled to move, and the palm will drive the human forearm to move during the movement. Therefore, during the arm ultrasound examination, the patient only needs to sit on the swivel chair 1 with the body stable and motionless in a relaxed state. The movement position of the palm can be controlled by the linear reciprocating drive component, the angle adjustment component and the rotation adjustment component to adjust the arm posture. Specifically, the linear reciprocating drive component is mainly used to control the elbow joint of the human body to be in a bent or straight state, the angle adjustment component is mainly used to control the internal rotation of the forearm, and the rotation adjustment component is mainly used to control the twisting angle of the elbow joint. It should be further explained that there are many ways to implement the linear reciprocating drive component mentioned above, such as the common hydraulic telescopic rod drive, electric telescopic rod drive or motor screw 11 drive, which can drive the fan-shaped base 6 above the linear base 8 to perform linear motion relative to the linear base 8. Similarly, there are many structures that can realize the functions of the rotation adjustment component and the angle adjustment component. In order to enable technical personnel in this field to know the specific implementation method of the present invention, a common linear reciprocating drive component, angle adjustment component and rotation adjustment component will be listed below to help technical personnel in this field know the specific implementation method of the present invention.

[0020] Specifically, the linear reciprocating drive assembly mentioned above may include a third motor 9 at one end of the linear base 8, a screw rod 11 at the output end of the third motor 9, a drive block 12 fixed at the bottom of the fan-shaped base 6, and a guide groove 10 for guiding the moving direction of the drive block 12. The drive block 12 and the screw rod 11 are threadedly matched. When the third motor 9 rotates, the third motor 9 drives the screw rod 11 to rotate. When the screw rod 11 rotates, it drives the drive block 12 threadedly matched with it to move. The drive block 12 drives the fan-shaped base 6 to perform linear motion. By controlling the rotation direction of the third motor 9, the linear motion direction of the fan-shaped base 6 can be adjusted. When the fan-shaped base 6 performs linear motion, the forearm support base 3 and the handle 5 perform linear motion synchronously.

[0021] Specifically, the angle adjustment component can be realized by a second motor 7 fixed on the fan-shaped base 6, and the output end of the second motor 7 is fixed to the bottom of the forearm support base 3. When the output end of the second motor 7 rotates, the forearm support base 3 rotates along the axis of the output end of the second motor 7, thereby realizing the angle adjustment of the handle 5, thereby driving the forearm to rotate inward. In order to make the forearm support base 3 have a more stable support effect on the forearm and ensure the smoothness of the rotation of the forearm support base 3 relative to the fan-shaped base 6, a guide rail 601 is opened at the edge of the fan-shaped base 6, and a support column 301 extending to the inside of the guide rail 601 is fixedly arranged under the forearm support base 3, and the bottom end of the support column 301 contacts the surface of the guide rail 601 through the ball 302, thereby ensuring the support stability and smoothness of the rotation of the forearm support base 3.

[0022] Specifically, the rotation adjustment component can be realized by a first motor 4 fixed at the front end of the forearm support base 3. A turntable is fixed at the output end of the first motor 4, and the handle 5 is fixed on the turntable. When a person's palm is held on the handle 5, the rotation of the first motor 4 can drive the person's palm and forearm to twist relative to the upper arm.

[0023] Further implementation methods of the above-mentioned linear reciprocating drive component, angle adjustment component and rotation adjustment component have the advantages of simple structure and are all powered by motors to facilitate control by the controller 13. In order to ensure that the controller 13 can know the current posture of the human body's arm in real time, by arranging angle sensors 14 at the output ends of the above-mentioned first motor 4, second motor 7 and third motor 9, the number of revolutions and angles of the current first motor 4, second motor 7 and third motor 9 can be known in real time, thereby obtaining the approximate posture of the current human body's arm.

[0024] Furthermore, in order to ensure the safety of the first motor 4, the second motor 7 and the third motor 9 during operation, a speed sensor and a torque sensor 17 are further provided at the output ends of the first motor 4, the second motor 7 and the third motor 9. The speed sensor is used to monitor the speed information of each motor, and the torque sensor 17 is used to monitor the torque information of each motor. The output ends of the speed sensor and the torque sensor 17 are connected to the input end of the controller 13 to provide the controller 13 with the speed signal and the torque signal of the motor. When the controller 13 determines that the current motor speed and / or torque is abnormal, the controller 13 controls the motor to stop running. In order for technicians in this field to know the installation position of the sensors on each motor, take the first motor 4 as an example, refer to Fig. 9 A gear signal disk 16 and a Hall speed sensor 15 are installed at the output end of the first motor 4. When the first motor 4 rotates, the teeth of the gear signal disk 16 rotate, and the Hall sensor detects the fluctuation of the signal, thereby obtaining the rotation angle and number of revolutions of the first motor 4. The speed sensor is an existing speed sensor and will not be elaborated here. Similarly, the torque sensor 17 and the angle sensor 14 are also existing sensors and will not be elaborated here.

[0025] It should be further explained that the controller 13 can be a computer, that is, a computer that displays ultrasound images. The computer can send operating instructions to the first motor 4, the second motor 7 and the third motor 9 to facilitate the doctor to control each motor, thereby adjusting the arm posture of the human body.

[0026] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A mobile elbow support for ultrasound imaging, fixed to an armrest (2) of a swivel chair (1), characterized in that: The invention comprises a linear base (8) extending in the direction of the armrest (2) and fixed to the upper surface of the armrest (2), a fan-shaped base (6) located above the base and capable of being driven by a linear reciprocating drive component to make linear reciprocating motion along the linear base (8), a forearm support base (3) located above the fan-shaped base (6) and capable of being driven by a rotation angle adjustment component to make reciprocating angular motion along the arc direction of the fan-shaped base (6), and a grip (5) located at the front end of the forearm support base (3) and capable of being driven by a rotation adjustment component to rotate. When in use, the forearm of a human body is placed on the forearm support base (3) and the hand is held on the grip (5), and the posture adjustment of the human arm is achieved by controlling the movement of the linear reciprocating drive component, the rotation angle adjustment component and the rotation adjustment component.

2. The mobile elbow support for ultrasonic imaging according to claim 1, characterized in that: It also includes a controller (13), and the linear reciprocating drive component, the rotation angle adjustment component and the rotation adjustment component are all operated under the control of the controller (13).

3. A mobile elbow support for ultrasonic imaging according to claim 1 or 2, characterized in that: The linear reciprocating drive component, the rotation angle adjustment component and the rotation adjustment component all use a motor as a power supply component, and an angle sensor (14) for monitoring the rotation angle of the motor is provided at the output end of the motor. The controller (13) can always know the current posture of the human arm based on the signal of the angle sensor (14).

4. The mobile elbow support for ultrasonic imaging according to claim 3, characterized in that: The output end of the motor is also provided with a rotation speed sensor for monitoring the rotation speed of the motor and a torque sensor (17) for monitoring the torque at the output end of the motor. The output ends of the rotation speed sensor and the torque sensor (17) are both connected to the input end of the controller (13) and are used to provide the controller (13) with a rotation speed signal and a torque signal of the motor. When the controller (13) determines that the current motor rotation speed and / or torque is abnormal, the controller (13) controls the motor to stop running.

5. The mobile elbow support for ultrasonic imaging according to claim 1, characterized in that: The rotation adjustment assembly comprises a first motor (4) fixed to the front end of the forearm support base (3) and a turntable at the output end of the first motor (4), and the handle (5) is fixed on the turntable.

6. The mobile elbow support for ultrasonic imaging according to claim 1, characterized in that: The rotation angle adjustment assembly comprises a second motor (7) fixed on a fan-shaped base (6), and an output end of the second motor (7) is fixed to the bottom of the forearm support base (3).

7. The mobile elbow support for ultrasonic imaging according to claim 6, characterized in that: The rotation angle adjustment assembly further comprises a guide rail (601) provided at the edge of the fan-shaped base (6) and a support column (301) fixed below the forearm support base (3) and extending into the interior of the guide rail (601), wherein the bottom end of the support column (301) contacts the surface of the guide rail (601) via a ball bearing (302).

8. The mobile elbow support for ultrasonic imaging according to claim 1, characterized in that: The linear reciprocating drive assembly comprises a third motor (9) at one end of a linear base (8), a lead screw (11) at an output end of the third motor (9), a drive block (12) fixed at the bottom of a fan-shaped base (6), and a guide groove (10) for guiding the moving direction of the drive block (12), wherein the drive block (12) and the lead screw (11) are threadedly matched.

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