A pain identifier

Abstract

The utility model discloses a kind of pain recognizers, including controller, controller is connected with detector by wire, voltage sensor is equipped in detector;The detector includes upper shell and lower shell;The lower shell below is equipped with notched, contact block is slidably connected in notched, and contact block upper end is symmetrically provided with guide strip, and guide strip is formed between the placement groove;The inside both sides of lower shell are equipped with sliding slot, and sliding slot is slidably connected with guide strip;The sliding slot in one side is equipped with resistance block, and voltage sensor is connected in resistance block both sides;The placement groove is equipped with conducting rod, and conducting rod is contacted with resistance block;The inside upper side of contact block is symmetrically provided with spring, and the upper end of spring is contacted with upper shell.The utility model can show the contraction degree of muscle when pain through the voltage change caused by resistance change, so as to assist medical staff to understand the pain grade of patient, facilitate accurate treatment.

Description

Technical Field

[0001] This utility model relates to a pain recognition device, belonging to the field of medical device technology. Background Technology

[0002] In today's medical environment, the number of patients with advanced cancer is on the rise, and their pain problems are becoming increasingly prominent. Currently, pain assessment for conscious patients mainly uses a numerical rating scale, where patients rate themselves on a scale of 0-10, with higher scores indicating more severe pain. However, this method has significant drawbacks in practical application. Many patients experience transient pain, not true cancer pain, yet they request morphine injections as soon as they feel pain. Furthermore, their self-reported pain scores do not match the pain levels shown in their facial expressions, leading to significant assessment biases and hindering precise treatment. Utility Model Content

[0003] The purpose of this invention is to provide a pain recognition device. This invention can display the degree of muscle contraction during pain by using voltage changes caused by changes in resistance, thereby assisting medical personnel in understanding the patient's pain level and facilitating precise treatment.

[0004] The technical solution of this utility model is as follows: A pain recognition device includes a controller, which is connected to a detector via a wire. The detector contains a voltage sensor. The detector includes an upper shell and a lower shell. The lower shell has a slot at its bottom, and a contact block is slidably connected in the slot. Guide strips are symmetrically arranged on the upper end of the contact block, and a placement groove is formed between the guide strips. Sliding grooves are provided on both sides of the interior of the lower shell, and the sliding grooves are slidably connected to the guide strips. A resistor block is provided in one of the sliding grooves, and the voltage sensor is connected in parallel on both sides of the resistor block. A conductive rod is provided in the placement groove, and the conductive rod is in contact with the resistor block. Springs are symmetrically arranged on the upper part of the contact block, and the upper end of the spring abuts against the upper shell.

[0005] The aforementioned pain detector has a cross-shaped cloth on the upper shell, and adhesive tape on the four corners of the cross-shaped cloth.

[0006] The aforementioned pain recognition device has two detectors; the front end of the controller is connected to a Y-shaped cable, and the controller is connected to the two detectors respectively via the Y-shaped cable.

[0007] In the aforementioned pain detector, the slot is circular; the contact block includes a cylindrical portion, and a protruding ring is provided on the upper side of the cylindrical portion.

[0008] The aforementioned pain detector has an upper and lower shell made of plastic; the upper and lower shells are square in shape.

[0009] The aforementioned pain detector has multiple electrode pads located below the lower shell.

[0010] Compared with existing technologies, this invention has the following advantages: In this invention, the detector is attached to the area of ​​the patient requiring testing. When the body feels pain, the muscles contract accordingly. Under the action of the spring, the lower end of the contact block always contacts the skin. After muscle contraction, the contact block moves outward, thereby increasing the resistance value of the resistor block connected to the circuit and increasing the voltage across the resistor block. That is, the greater the pain, the greater the muscle contraction, and the greater the voltage across the resistor block. Then, the information is sent to the control board through the voltage sensor. After processing, the control board displays the patient's pain level on the screen, thus assisting medical staff in understanding the patient's pain status. At the same time, the electrical signals in the muscles also change accordingly during pain. This is detected by the electrode pads and a signal is sent to the control board, thus preventing interference from skin fluctuations caused by normal breathing. Therefore, this invention achieves the effect of assisting medical staff in understanding the patient's pain level and has the advantages of simple operation and practicality. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the bottom structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the detector's structure;

[0014] Figure 4 This is a structural diagram of the lower shell;

[0015] Figure 5 This is a circuit diagram of the present invention.

[0016] The labels in the attached diagram are as follows: 1-Controller, 2-Display screen, 3-Y-type cable, 4-Detector, 5-Voltage sensor, 6-Upper shell, 7-Lower shell, 8-Slot, 9-Contact block, 10-Conductor strip, 11-Placement slot, 12-Sliding slot, 13-Resistor block, 14-Conductive rod, 15-Spring, 16-Cross cloth, 17-Adhesive, 18-Operating button, 19-Cylindrical part, 20-Protruding ring, 21-Electrode sheet. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0018] Example: A pain recognition device, configured as follows Figure 1-4As shown, the device includes a controller 1, which houses a control board and a battery. The battery provides power for the operation of the identifier. The controller 1 has a display screen 2. The control board is a PCBA board, integrating a processor and electronic components such as capacitors and resistors. The processor can be an MCU. Since the control board is a common component in this field and is commercially available, its specific structure and circuit connections will not be described here. The controller 1 is connected to a detector 4 via wires. The detector 4 contains a voltage sensor 5, which is commercially available. In this embodiment, a voltage sensor manufactured by TELESKY is used, with a voltage detection range of DC 0.02445V-25V. The detector 4 includes an upper shell 6 and a lower shell 7, both made of plastic. The upper shell 6 and lower shell 7 are square-shaped. A slot 8 is located at the bottom of the lower shell 7, within which a contact block 9 is slidably connected. Guide strips 10 are symmetrically arranged at the upper ends of the contact blocks 9, forming a placement groove 11 between the guide strips 10. Sliding grooves 12 are provided on both sides of the interior of the lower shell 7, slidably connected to the guide strips 10. A resistor block 13 is located in one side of the sliding groove 12, with a voltage sensor 5 connected in parallel on both sides of the resistor block 13. A conductive rod 14 is located in the placement groove 11, with its outer end protruding from one side of the guide strip 10 and contacting the resistor block 13. Springs 15 are symmetrically arranged above the interior of the contact blocks 9, with the upper ends of the springs 15 abutting against the upper shell 6. When a part of the human body is subjected to harmful stimulation and experiences pain, muscle contraction is a natural response of the body to pain. When the muscle contracts, under the elastic action of spring 15, contact block 9 moves outward with the muscle contraction, increasing the effective length of resistor block 13 connected to the circuit. According to the resistance calculation formula:

[0019]

[0020] Where R1 is the resistance of resistor block 13, ρ is the resistivity of resistor block 13, L is the connection length of resistor block 13, and S is the cross-sectional area of ​​resistor block 13; when the resistivity ρ and the cross-sectional area S remain unchanged, the resistance value R1 will increase as the connection length L of resistor block 13 increases.

[0021] As the resistance of resistor 13 increases in the circuit, according to Ohm's law:

[0022]

[0023] Where I is the current, U is the power supply voltage, R1 is the resistance of resistor block 13, and R2 is the resistance of the remaining components in the circuit; in the entire circuit, if the power supply voltage remains constant and the resistance increases, the current in the circuit will decrease accordingly. Furthermore, according to the voltage divider principle of series circuits:

[0024]

[0025] In this circuit, U1 represents the voltage across resistor 13, U is the power supply voltage, R1 is the resistance of resistor 13, and R2 is the resistance of the other components. The voltage across resistor 13 increases with the effective length of resistor 13 connected to the circuit. Voltage sensor 5 monitors the voltage across resistor 13 and converts it into an electrical signal, which is then output to the control board. The control board processes this signal and converts it into data that directly reflects the patient's pain level. By analyzing and interpreting this data, medical staff can more accurately understand the patient's pain level.

[0026] Preferably, such as Figure 1 and 2 As shown, a cross-shaped cloth 16 is provided on the upper shell 6, and adhesive tape 17 is provided on the four corners of the cross-shaped cloth 16. The middle part of the cross-shaped cloth 16 is placed on the upper shell 6, and then the adhesive tape 17 on the four corners of the cross-shaped cloth 16 is attached to the patient's skin, so that the detector 4 is fixedly connected to the patient.

[0027] Preferably, such as Figure 1 As shown, there are two detectors 4; the front end of the controller 1 is connected to a Y-type cable 3, and the controller 1 is connected to the two detectors 4 respectively via the Y-type cable 3. The controller 1 is provided with multiple operation buttons 18, including power on / off buttons, calibration buttons, etc.

[0028] Preferably, such as Figure 3 and 4 As shown, the slot 8 is circular; the contact block 9 includes a cylindrical part 19, and a protruding ring 20 is provided on the upper side of the cylindrical part 19. The protruding ring 20 is used to prevent the contact block 9 from separating from the lower shell 7 when it moves outward under the action of the spring 15, and to limit the contact block 9.

[0029] Preferably, such as Figure 2 and 3 As shown, four electrode pads 21 are provided below the lower shell 7. Four wire holes are also provided below the lower shell 7, allowing the wiring inside the Y-shaped cable 3 to pass through these holes and connect to the electrode pads 21. During pain, the electrical signals within the muscles change accordingly, which are detected by the electrode pads 21 and sent to the control board, thus preventing interference from normal breathing-induced skin movement on the instrument's detection.

[0030] Working principle:

[0031] The detector 4 is attached to the area to be tested by the adhesive 17 on the cross-shaped cloth 16. The switch button is pressed, and the calibration button is used to calibrate the circuit so that the resistance value of the resistor block 13 corresponds to a pain level of 0. When the body feels pain, the muscles will contract accordingly. Under the action of the spring 15, the lower end of the contact block 9 will always be in contact with the skin. After the muscles contract, the contact block 9 will move outward, thereby increasing the resistance value of the part of the resistor block 13 connected to the circuit, and the voltage across the resistor block 13 will also increase. Figure 5 As shown, the greater the pain, the greater the muscle contraction, and the greater the voltage across resistor 13. This information is then sent to the control board via voltage sensor 5. The control board processes this information and displays the patient's pain level on display screen 2, thus assisting medical staff in understanding the patient's pain condition. Simultaneously, the electrical signals within the muscles change accordingly during pain, which are detected by electrode pad 21 and sent to the control board, preventing interference from normal breathing-induced skin movement that could affect the instrument's detection.

Claims

1. A pain recognition device, comprising a controller (1), wherein the controller (1) is connected to a detector (4) via a wire, and the detector (4) contains a voltage sensor (5); characterized in that: The detector (4) includes an upper shell (6) and a lower shell (7); a slot (8) is provided below the lower shell (7), and a contact block (9) is slidably connected in the slot (8). A guide bar (10) is symmetrically arranged on the upper end of the contact block (9), and a placement groove (11) is formed between the guide bars (10); a sliding groove (12) is provided on both sides of the interior of the lower shell (7), and the sliding groove (12) is slidably connected to the guide bar (10); a resistor block (13) is provided in one side of the sliding groove (12), and a voltage sensor (5) is connected in parallel on both sides of the resistor block (13); a conductive rod (14) is provided in the placement groove (11), and the conductive rod (14) is in contact with the resistor block (13); a spring (15) is symmetrically arranged above the interior of the contact block (9), and the upper end of the spring (15) abuts against the upper shell (6).

2. The pain recognition device according to claim 1, characterized in that: A cross-shaped cloth (16) is provided on the upper shell (6), and adhesive (17) is provided on the four corners of the cross-shaped cloth (16).

3. The pain recognition device according to claim 1, characterized in that: Two detectors (4) are provided; the front end of the controller (1) is connected to a Y-type cable (3), and the controller (1) is connected to the two detectors (4) respectively via the Y-type cable (3).

4. The pain recognition device according to claim 1, characterized in that: The slot (8) is circular; the contact block (9) includes a cylindrical part (19), and a protruding ring (20) is provided on the upper side of the cylindrical part (19).

5. The pain recognition device according to claim 1, characterized in that: The upper shell (6) and lower shell (7) are made of plastic; the upper shell (6) and lower shell (7) are square.

6. The pain recognition device according to claim 1, characterized in that: Multiple electrode plates (21) are provided below the lower shell (7).

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