阅读说明：本技术 一种压力式肌电痛阈检测设备 (Pressure type myoelectricity pain threshold detection equipment ) 是由 刘伟超 盘强文 冯志强 于 2019-11-15 设计创作，主要内容包括：本申请公开一种压力式肌电痛阈检测装置,其包括控制显示模块A、加压检测模块B、肌电检测模块C,所述的控制显示模块A包括控制单元1、显示屏2以及按键3；所述的加压检测模块B包括气泵4、气压传感器5、通气管6、压痛刺激装置7、压痛刺激装置突出物8以及加压袖带9。通过压力刺激下,检测肌电动作电位,以产生屈反射的时的加压力值作为确定疼痛阈值,检测原理明确可靠,测量结果客观准确。(The application discloses a pressure type myoelectricity pain threshold detection device which comprises a control display module A, a pressurization detection module B and a myoelectricity detection module C, wherein the control display module A comprises a control unit 1, a display screen 2 and a key 3; the pressurization detection module B comprises an air pump 4, an air pressure sensor 5, an air pipe 6, a tenderness stimulation device 7, a tenderness stimulation device protrusion 8 and a pressurization cuff 9. The myoelectric action potential is detected under the stimulation of pressure, the pressure value when the flexion reflex is generated is used as the threshold value for determining pain, the detection principle is clear and reliable, and the measurement result is objective and accurate.)

1. A pressure-type myoelectric pain threshold detection apparatus, comprising: the myoelectricity muscle; the control display module (A) is connected with the air pump (4), and an air outlet of the air pump (4) is connected with the pressurizing cuff (9); when the pressurizing cuff (9) is expanded, the pressure pain stimulation device (7) is driven to move towards the skin; the myoelectricity detection module (C) is used for detecting and acquiring a myoelectricity signal; and the control display module (A) receives the electromyographic signals and outputs corresponding pain threshold values.

2. The pressure-type myoelectric pain threshold detection device according to claim 1, wherein the control display module (A) comprises a control unit, and the control unit is connected with a display; the pressurizing cuff (9) is connected with an air pressure sensor (5); the control unit is connected with the air pressure sensor (5); the air pressure sensor (5) is used for detecting air pressure in the pressurizing cuff (9), and the display is used for displaying air pressure information of the pressurizing cuff (9) and a pain threshold value.

3. The pressure-type myoelectric pain threshold detection device according to claim 1, wherein the pressure pain stimulation means (7) is provided on the inner side of the pressure cuff (9).

4. The pressure-type myoelectric pain threshold detection device according to claim 1, wherein the pressure pain stimulation device (7) comprises a base, and the base is provided with a protrusion (8).

5. The pressure-type myoelectric pain threshold test device according to claim 4, wherein the end of the protrusion is a hemisphere with a diameter of 5 mm.

6. A pressure-type myoelectric pain threshold test device as claimed in any one of claims 1-5, wherein the pressurizing cuff (9) comprises a wound band within which is located an inflatable pressurizing bladder.

7. A pressure-type myoelectric pain threshold test device according to any one of claims 1 to 5, wherein the pressure pain stimulation means (7) on the pressurizing cuff (9) is provided on the forearm or the curve of the lower leg of the test subject.

8. The pressure-type myoelectric pain threshold detection device according to claim 2, wherein the control display module (A) further comprises a key (3), and the control unit is connected with the key (3).

9. A pressure type myoelectric pain threshold detection device according to any one of claims 1-5, characterized in that the myoelectric detection module (C) comprises myoelectric electrodes and a pre-filter circuit.

Technical Field

The invention relates to the technical field of medical instruments, in particular to pressure type myoelectric pain threshold detection equipment.

Background

With increasing emphasis on pain, the measurement of pain threshold becomes an important component of pain research. Pain is a subjective experience, and the accuracy of pain threshold measurement directly affects the accuracy of pain threshold judgment. In clinical and scientific research works, the judgment of pain is related to the disease diagnosis grading, the treatment effect evaluation and related pain neurophysiological research work of patients. Generally, clinicians rely on the patients 'descriptions of pain or subjective filling of pain scoring sheets to obtain the patients' pain perception, and there is no objective basis for judgment.

At present, no mature and reliable pain threshold detection equipment exists clinically, and the main pain threshold measurement method is to fill a pain score scale through subjective description or subjective filling of patients. The pain threshold cannot be objectively determined due to the great difference between subjective judgment and expression of patients. Furthermore, the pain measuring equipment on the market at present is large in size and inconvenient to operate and move, physiological damage is caused to users by invasive methods of partial equipment, and psychological fear is brought to partial users by pain threshold measurement of an electrical stimulation method.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides pressure type myoelectric pain threshold detection equipment, which solves the problem that the existing pain threshold measurement result is subjectively inaccurate. In order to achieve the purpose, the invention adopts the following technical scheme: a pressure-type myoelectric pain threshold detection apparatus comprising: the system comprises a pressurization detection module, a control display module and a myoelectricity detection module, wherein the pressurization detection module comprises an air pump, a pressurization sleeve belt and a pressure pain stimulation device arranged on the pressurization sleeve belt; the control display module is connected with the air pump, and an air outlet of the air pump is connected with the pressurizing cuff; when the pressurizing cuff is expanded, the pressure pain stimulation device is driven to move towards the skin; the electromyography detection module is used for detecting and acquiring electromyography signals; and the control display module receives the electromyographic signals and then outputs corresponding pain threshold values.

Furthermore, the control display module comprises a control unit, and the control unit is connected with a display; the pressurizing cuff is connected with an air pressure sensor; the control unit is connected with the air pressure sensor; the air pressure sensor is used for detecting air pressure in the compression sleeve belt, and the display is used for displaying air pressure information of the compression sleeve belt and the pain threshold value.

Further, the tenderness stimulation device is provided on an inner side surface of the compression cuff.

Furthermore, the tenderness stimulation device comprises a base, and a bulge is arranged on the base.

Furthermore, the tail end of the bulge is in a hemispherical shape, and the diameter of the hemispherical shape is 5 mm.

Furthermore, the pressurizing cuff comprises a winding belt, and an inflating and pressurizing air bag is arranged in the winding belt.

Furthermore, the pressure pain stimulation device on the pressure cuff is arranged on the lower arm or the curved side of the lower leg of the detection object; preferably, the distance between the midline of the tenderness stimulation device and the transverse crease of the wrist is 10 CM.

Furthermore, the control display module further comprises a key, and the control unit is connected with the key.

Furthermore, the myoelectricity detection module comprises a myoelectricity electrode and a pre-filter circuit.

Furthermore, the control display module comprises a control circuit board, and the control circuit board is connected with a display screen and a key; the control end of the air pump and the air pressure sensor are connected to the control circuit board.

Compared with the prior art, the invention has the following beneficial effects:

according to the pressure type myoelectricity pain threshold detection device, pain is generated through physical pressurization stimulation, the surface myoelectricity signal of the flexor reflex is detected, the pressurizing value inducing the flexor reflex is used as the pain threshold value, the detection principle is clear and reliable, the influences of subjective pain reporting and psychological fear of a subject are avoided, the measurement method is noninvasive and rapid, a user has no psychological burden, and the result is objective and accurate.

The pressure type myoelectricity pain threshold detection device has the advantages of small size, portability, simple structure, convenience and rapidness in operation, noninvasive safety and no psychological burden on a user, and is suitable for clinical and scientific research pain threshold examination and research.

Drawings

FIG. 1 is a schematic view of the apparatus of the present invention;

FIG. 2 is a block diagram of the apparatus of the present invention;

FIG. 3 is a schematic view of the apparatus of the present invention in use at the arm;

FIG. 4 is a schematic view of the device of the present invention in use on a lower limb;

reference numbers in the drawings: the myoelectric muscle control and stimulation device comprises a control display module A, a pressurization detection module B, a myoelectric detection module C, a control unit 1, a display screen 2, a key 3, an air pump 4, an air pressure sensor 5, an air pipe 6, a tenderness stimulation device 7, a probe protrusion 8, a pressurization cuff 9, a front circuit 10, a first myoelectric electrode 11, a second myoelectric electrode 12 and a reference electrode 13.

Detailed Description

The scheme will now be further described with reference to the accompanying drawings.

EXAMPLE 1

As shown in fig. 1, the pressure-type myoelectricity pain threshold detection device comprises a control display module a, a pressurization detection module B and a myoelectricity detection module C, wherein the control display module a comprises a control unit 1, a display screen 2 and a key 3; the pressurizing detection module B comprises an air pump 4, an air pressure sensor 5, an air pipe 6, a pressing pain stimulation device 7, a pressing pain stimulation device protrusion 8 and a pressurizing cuff 9, an inflating and pressurizing air bag is arranged in the pressurizing cuff 9, and nylon yarn hasps are arranged at two ends of the pressurizing cuff 9, so that the pressurizing detection module B is conveniently fixed on the stimulating position of the arm or the lower leg.

The air pump 4 is connected with the air pressure sensor 5 and the pressurizing cuff 9 through the air pipe 6, and the air pipe 6 is communicated with the inflating and pressurizing air bag; the tenderness stimulation device 7 is adhered to the inner side surface of the compression cuff 9; the myoelectricity detection module C comprises a front circuit 10 and a recording electrode 11, wherein a first myoelectricity electrode 11, a second myoelectricity electrode 12 and a reference electrode 13 are connected with the front circuit 10; the pressurization detection module B is connected with the control display module A, the control display module A controls the inflation pressurization of the air pump 4 to be opened and closed, and the air pressure sensor 5 sends an air pressure value to the control unit 1 to be displayed on the display screen 2. The control unit preferably adopts an STM32F407 chip, and the display screen is 3.12 inches, preferably an OLED screen.

As shown in fig. 2, one or more, preferably three, electrodes of the tenderness stimulation device 7 can be selected and attached to the inner side of the compression cuff 9 in a transverse arrangement; the tenderness stimulation device 7 is a round base, and a protrusion for generating tenderness is arranged in the middle. The tail end of the bulge is hemispherical, and the diameter of the hemisphere is 5 mm; the pressurizing cuff 9 is bound with the stimulation position of the arm or the lower leg, and the bulge stimulates the bent side of the lower arm or the lower leg through expansion to generate measuring pain sensation; the pain sense can be objectively evaluated in the muscle recovery test and the surgical recovery of the patient. The influence of subjective pain reporting and psychological fear of the testee is avoided, the measuring method is noninvasive and rapid, the psychological burden of the user is avoided, and the result is more objective and accurate.

As shown in figures 1 and 3, the tenderness stimulation device 7 is placed on the curved side of the lower arm, the center of which is 10cm away from the transverse striation of the wrist and is placed along the median nerve. The myoelectricity detection module C is connected with the control display module A for communication, the front-end circuit 10 filters and amplifies myoelectricity signals collected from the myoelectricity electrodes 11, 12 and 13, the myoelectricity signals are transmitted to the control unit 1 after analog-to-digital conversion, and the recording electrode is a patch electrode and comprises a first myoelectricity electrode 11, a second myoelectricity electrode 12 and a reference electrode 13; the first myoelectric electrode 11 is placed at the highest position of the biceps brachii muscle abdomen, the second myoelectric electrode 12 is placed at the biceps brachii muscle abdomen which is 20mm away from the first myoelectric electrode, and the reference electrode 13 is placed at the biceps brachii muscle tendon. The air pump adopts a 3V micro air pump PM1401, the no-load flow is larger than 1.2LPM, and the pressure sensor is preferably a capacitance sensor.