Limb movement alarm bracelet

Abstract

The utility model discloses a limb movement alarm bracelet which comprises a shell, a bandage, an infrared sensing device, an iron ball, an electromagnet, a single chip microcomputer module, a control button, an alarm module, a network module and a power module. Wherein a mounting plate is arranged in the shell, and the shell is divided into an upper layer and a lower layer by the mounting plate; the bandage is arranged on the side wall of the shell and used for fixing the shell to the arm of a patient. A groove for placing an iron ball is formed in the center of the mounting plate; the infrared sensing device comprises an infrared emitter and an infrared receiver, and the infrared emitter and the infrared receiver are oppositely arranged on the two sides of the groove. The medical arm movement alarm device is worn on the arm of a patient, the patient cannot be restrained in the dialysis process, and when the arm of the patient moves substantially, the medical arm movement alarm device can give an alarm to remind the patient not to move substantially and inform medical staff to check the reason of the arm movement of the patient in time at the same time.

Description

Technical Field

[0001] This utility model relates to a wristband, and more particularly to a limb movement alarm wristband. Background Technology

[0002] Hemodialysis (HD) is a renal replacement therapy for patients with acute and chronic renal failure. It involves draining blood from the body and returning the purified blood to the body. Traditionally, during hemodialysis, the patient's arm is placed on the bed. However, because the entire dialysis process is very long, generally lasting more than four hours, the patient's arm cannot move significantly during the process. Excessive arm movement could cause the dialysis catheter to dislodge or the needle to shift, leading to needle detachment from the blood vessel or extravasation of blood, affecting normal hemodialysis. This not only increases the patient's suffering but also increases the difficulty for medical staff, and in severe cases, can cause medical accidents. While restraining the patient's arm during dialysis can prevent movement, it increases the patient's feeling of restriction and discomfort. Utility Model Content

[0003] To address the problems existing in the background technology, this utility model provides a limb movement alarm bracelet that is worn on the patient's arm. The patient will not be restricted during dialysis, and when the patient's arm moves significantly, an alarm will be triggered to remind the patient not to move too much and to inform medical staff to check the cause of the patient's arm movement in time.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A limb movement alarm wristband includes a shell, a strap, an infrared sensor, an iron ball, an electromagnet, a microcontroller module, a control button, an alarm module, a network module, and a power module. The shell contains a mounting plate that divides the shell into upper and lower layers. The strap is located on the side wall of the shell for securing it to the patient's arm. A groove for holding the iron ball is located at the center of the mounting plate. The infrared sensor includes an infrared transmitter and an infrared receiver, which are positioned opposite each other on either side of the groove. When the iron ball is in the groove, the infrared receiver cannot receive the signal. When the iron ball is not located in the groove, the infrared receiver can receive the infrared light emitted by the infrared transmitter. The infrared receiver is electrically connected to the microcontroller module. The electromagnet is set close to the groove on the lower surface of the mounting plate. The microcontroller module is electrically connected to the control button and the electromagnet respectively. The control button is used to control whether the electromagnet is conductive. The alarm module is electrically connected to the microcontroller module and is used to issue an alarm. The network module is electrically connected to the microcontroller module and communicates with the mobile terminal of the nurse station to send alarm information to the mobile terminal of the nurse station. The power supply module is used to provide the working voltage.

[0006] The beneficial effects of this utility model are:

[0007] The limb movement alarm bracelet provided by this utility model allows for the use of an electromagnet controlled by a control button. This causes an iron ball to be attracted into a groove. The outer casing is then secured to the patient's arm with straps, ensuring it is laid flat. The electromagnet is then de-conductive via another control button, releasing the iron ball. When the patient's arm moves significantly, the iron ball moves out of the groove. At this point, the infrared receiver receives the infrared radiation emitted by the infrared transmitter and sends the received infrared feedback to the microcontroller module. The microcontroller module then controls the alarm module to issue an alarm to remind the patient not to move their arm significantly. The alarm information is also sent to a mobile device at the nurses' station via a network module, alerting medical staff to the significant arm movement and allowing them to promptly investigate the cause of the movement and prevent accidents. Attached Figure Description

[0008] One or more embodiments of the present invention will now be described by way of example only with reference to the accompanying drawings, in which:

[0009] Figure 1 This is a schematic diagram of the external structure of an embodiment of the present utility model.

[0010] Figure 2 This is a structural diagram of the glass cover and the outer shell in the separated state according to an embodiment of the present invention.

[0011] Figure 3This is a schematic diagram of the structure of the iron ball in the groove state according to an embodiment of the present invention.

[0012] Figure 4 This is a schematic diagram of an embodiment of the present utility model.

[0013] Figure 5 This is a circuit diagram of an embodiment of the present invention.

[0014] The following components are labeled in the diagram: 1. Outer shell; 11. Glass cover; 12. Mounting plate; 121. Groove; 2. Strap; 21. Rectangular ring; 22. Pin buckle; 23. Through hole; 3. Iron ball; 4. Electromagnet; 5. Microcontroller module; 6. Control button; 7. Alarm module; 8. Network module; 9. Power supply module; 10. Infrared transmitter; 20. Infrared receiver; 30. Stop button. Detailed Implementation

[0015] The present invention will now be described in detail with reference to exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present invention may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of the present invention more complete and to fully convey the concept of the present invention to those skilled in the art.

[0016] like Figures 1 to 5 As shown, the limb movement alarm bracelet of this embodiment includes a shell 1, a strap 2, an infrared sensor, an iron ball 3, an electromagnet 4, a microcontroller module 5, a control button 6, an alarm module 7, a network module 8, and a power module 9.

[0017] The outer shell 1 has a hollow columnar structure, and a transparent glass cover 11 is provided on the upper surface of the outer shell 1. An installation plate 12 is provided inside the outer shell 1, which divides the outer shell 11 into upper and lower layers.

[0018] The strap 2 is provided on the side wall of the outer casing 1 and is used to fix the outer casing 1 to the patient's arm. In this embodiment, there are two straps 2. One end of each strap 2 is connected to the side wall of the outer casing 1. The other end of one strap 2 is provided with a rectangular ring 21 and a pin buckle 22. One short side of the rectangular ring 21 is hinged to the end of the strap 2, and the short side is also hinged to one end of the pin buckle 22. The other strap 2 has a plurality of through holes 23 arranged at intervals along its length. The pin buckle 22 is fastened into different through holes 23 to adjust the tightness of the strap 2. The outer casing 1 can be fixed to the arm by the straps 2.

[0019] A groove 121 for placing an iron ball 3 is provided at the center of the mounting plate 12. The iron ball 3 is made of hollow iron. The depth of the groove 121 should not be too deep to prevent the iron ball 3 from being unable to dislodge when the arm moves significantly; similarly, the depth of the groove 121 should not be too shallow to prevent the iron ball 3 from dislodging when the arm moves slightly. In this embodiment, the depth of the groove 121 can be set to 1mm to 2mm.

[0020] The infrared sensing device includes an infrared transmitter 10 and an infrared receiver 20, which are positioned opposite each other on both sides of a groove 121. When the iron ball 3 is located in the groove 121, it blocks the infrared transmitter 10 and receiver 20, preventing the receiver 20 from receiving the infrared light emitted by the transmitter 10. When the iron ball 3 is not located in the groove 121, the receiver 20 can receive the infrared light emitted by the transmitter 10. The receiver 20 is electrically connected to the microcontroller module 5. When the iron ball 3 leaves the groove 121, the receiver 20 can receive the infrared light and sends a feedback signal indicating that it has received the infrared light to the microcontroller module 5. In this embodiment, both the microcontroller module 5 and the power supply module 9 are located inside the housing 1 and below the mounting plate 12. The microcontroller module 5 uses an STM32F103C8T6 microcontroller as its core and contains corresponding computer programs. The power supply module 9 provides the operating voltage. Infrared transmitter 10 uses an IR333_H0 infrared emitting diode, represented by D10 in the circuit. Infrared receiver 20 uses an HS0038B chip, and the output terminal (DATE pin) of infrared receiver 20 is electrically connected to the input terminal (I / O pin) of microcontroller module 5.

[0021] Electromagnet 4 is mounted close to the groove 121 on the lower surface of mounting plate 12. Electromagnet 4 is represented by F in the circuit.

[0022] The microcontroller module 5 is electrically connected to the control button 6 and the electromagnet 4. The control button 6 is used to control whether the electromagnet 4 conducts electricity. In this embodiment, the control button 6 is located on the surface of the glass cover 11 of the outer casing 1. It includes two buttons, represented by K1 and K2 in the circuit. Button K1 controls the electromagnet 4 to conduct, and button K2 controls the electromagnet to de-conduct. Referring to the circuit diagram, when button K1 is pressed, the microcontroller module 5 outputs a high level to the base of transistor Q1, transistor Q1 conducts, relay KA1 conducts, and at this time, the electromagnet 4 conducts electricity and generates magnetic force. When button K2 is pressed, the microcontroller module 5 outputs a low level to transistor Q1, transistor Q1 de-conducts, relay KA1 de-conducts, and at this time, the electromagnet 4 does not conduct electricity and does not generate magnetic force.

[0023] The alarm module 7 is electrically connected to the microcontroller module 5 and is used to issue an alarm. In this embodiment, the alarm module 7 includes a signal indicator light and a speaker mounted on the surface of the housing 1. In the circuit, the signal indicator light is represented by D1, and the speaker is represented by SPEAK. A stop button 30, denoted by K3, is provided on the surface of the glass cover 11 to control the signal indicator light and speaker to stop working.

[0024] Network module 8 is electrically connected to microcontroller module 5 and communicates with the mobile terminal at the nurse station to send alarm information to the mobile terminal. In this embodiment, network module 8 is a GSM module, specifically the GSM_SIM800A module. It integrates a GSM RF chip, baseband processing chip, memory, power amplifier, etc., onto a single circuit board. It has an independent operating system, GSM RF processing, baseband processing, and provides standard interfaces. The GSM module has all the basic functions for communication based on the GSM network, such as sending SMS messages, making voice calls, and transmitting GPRS data. The RXD and TXD pins of the GSM module are electrically connected to the PA3 and PA4 pins of the microcontroller module 5, respectively, for transmitting alarm information. A GSM network is established between the network module 8 and the mobile terminal at the nurse station. A SIM card slot is provided on the surface of the housing 1. After inserting a SIM card with GSM network enabled, the network module 8 can communicate with the GSM network. The alarm information is sent from the output of the microcontroller module 5 to the GSM module, and then sent from the radio frequency chip of the GSM module and the GSM network to the mobile terminal at the nurse station, thereby alerting medical staff that the patient's arm has moved significantly.

[0025] In use, the electromagnet 4 is made conductive by the control button 6, allowing the iron ball 3 to be attracted into the groove 121 (after the electromagnet 4 becomes conductive, the outer casing 1 needs to be shaken by hand to move the iron ball 3 into the groove 121). Then, the outer casing 1 is fixed to the patient's arm with the strap 2 and placed in a flat position. The electromagnet 4 is then deconductive by the control button 6, and the iron ball 3 is not fixed. When the patient's arm moves significantly, the iron ball 3 will move out of the groove 121 due to inertia. At this time, the infrared receiver 20 can receive the infrared rays emitted by the infrared transmitter 10 and send the feedback information of receiving the infrared rays to the microcontroller module 5. The microcontroller module 5 controls the alarm module 7 to issue an alarm (the speaker sounds an alarm) to remind the patient not to move their arm significantly. The alarm information is also sent to the mobile terminal of the nurse station through the network module 8 to remind medical staff that the patient's arm has moved significantly, so that they can check the cause of the patient's arm movement in time and avoid accidents. After the medical staff arrived at the patient's side, they pressed the stop button 30 to stop the speaker from alarming.

[0026] This invention primarily serves as a warning system, as patients need to consciously avoid large arm movements during dialysis. It also helps medical staff to promptly detect any arm movement. In practice, for patients with poor compliance, restraint devices may be necessary to stabilize their arms. For patients with good compliance and who prioritize comfort, the limb movement alarm bracelet of this invention can be used.

Claims

1. A limb movement alarm bracelet, characterized in that: It includes a casing, straps, infrared sensor, iron ball, electromagnet, microcontroller module, control buttons, alarm module, network module, and power supply module; among which, An installation plate is installed inside the outer shell, which divides the outer shell into upper and lower layers; The straps are located on the side wall of the shell and are used to secure the shell to the patient's arm; The mounting plate has a groove in the center for placing an iron ball; The infrared sensing device includes an infrared transmitter and an infrared receiver, which are arranged opposite each other on both sides of a groove. When the iron ball is in the groove, the infrared receiver cannot receive the infrared light emitted by the infrared transmitter. When the iron ball is not in the groove, the infrared receiver can receive the infrared light emitted by the infrared transmitter. The infrared receiver is electrically connected to the microcontroller module. The electromagnet is mounted close to the groove on the lower surface of the mounting plate; The microcontroller module is electrically connected to the control button and the electromagnet respectively. The control button is used to control whether the electromagnet conducts electricity. The alarm module is electrically connected to the microcontroller module and is used to issue an alarm. The network module is electrically connected to the microcontroller module and communicates with the mobile terminal of the nurse station to send alarm information to the mobile terminal of the nurse station. The power module is used to provide the operating voltage.

2. The limb movement alarm bracelet according to claim 1, characterized in that: The alarm module includes a speaker mounted on the surface of the housing.

3. The limb movement alarm bracelet according to claim 1, characterized in that: The straps are provided in two parts, one end of each strap is connected to the side wall of the outer shell, and the other end of one strap is provided with a rectangular ring and a pin buckle. One short side of the rectangular ring is hinged to the end of the strap, and the short side is also hinged to one end of the pin buckle. The other strap has multiple through holes arranged at intervals along its length. The pin buckle is fastened into different through holes to adjust the tightness of the strap.

4. The limb movement alarm bracelet according to claim 1, characterized in that: The network module is a GSM module.

5. The limb movement alarm bracelet according to claim 1, characterized in that: The upper surface of the outer casing is provided with a transparent glass cover.

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