CN215018380U - a pressure band - Google Patents

Abstract

The utility model discloses a tourniquet belt, relating to the technical field of medical instruments. This pressure arteries and veins area includes: the flexible film, the serpentine piezoresistive sensor, the signal processing module, the magic tape and the pressure sensor; the sensor comprises a flexible film, a snake-shaped piezoresistive sensor, a magic tape, a pressure sensor and a signal processing module, wherein the snake-shaped piezoresistive sensor is arranged on the flexible film and is connected with the signal processing module, the magic tape is arranged on two sides of the flexible film, the pressure sensor is arranged on the magic tape, and the pressure sensor is connected with the signal processing module. The tourniquet prevents the overexertion of the buckle in the use process of the tourniquet through the serpentine piezoresistive sensor, prevents the use time of the tourniquet from exceeding 1 minute through the counter, and avoids the harm caused by overlong use time and the overexertion of the tourniquet.

Description

Pulse pressing belt

Technical Field

The utility model relates to the technical field of medical equipment, specifically relate to a vein pressing belt.

Background

The existing tourniquet is mostly provided with latex tubes, but the tourniquet is too long or too tight in use time, so that blood backflow is easily blocked, blood vessels swell, the working pressure of blood in the capillaries is expanded, the blood volume is reduced, and liquid outflow is caused. And high pressure is continuously applied to the vein, the moisture and electrolyte solution are reduced, and the concentration value of the protein and protein conjugate is increased; when blood is blocked, the specificity of free fatty acid is improved; the body cells are metabolized again to improve the metabolism substance lactic acid bacteria, and the like.

Typically, the tourniquet is released by the medical practitioner immediately after the needle is inserted into the blood vessel. However, if the tourniquet is loosened through the experience of the medical staff, the tourniquet still can be used for too long or too tight.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model provides a vein pressing belt, this vein pressing belt prevent through serpentine shape piezoresistive sensor that the tension of pressing in the use is taken and is detained excessively tightly, prevents through the counter that the live time of pressing the vein area is no longer than 1 minute, avoids pressing the harm that vein area live time overlength and tension brought.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a tourniquet comprising: the flexible film, the serpentine piezoresistive sensor, the signal processing module, the magic tape and the pressure sensor; the sensor comprises a flexible film, a snake-shaped piezoresistive sensor, a magic tape, a pressure sensor and a signal processing module, wherein the snake-shaped piezoresistive sensor is arranged on the flexible film and is connected with the signal processing module, the magic tape is arranged on two sides of the flexible film, the pressure sensor is arranged on the magic tape, and the pressure sensor is connected with the signal processing module.

Further, the flexible film is a polydimethylsiloxane film.

Further, the serpentine piezoresistive sensor is a serpentine structure formed by staggered copper nanowires.

Further, the copper nanowires are cast in polydimethylsiloxane.

Further, the serpentine piezoresistive sensor is arranged in the center of the flexible film.

Further, the length of the serpentine piezoresistive sensor does not exceed 3 cm.

Furthermore, a Bluetooth sending module is arranged on the pressure sensor.

Further, the signal processing module includes: the system comprises a timer, a central processing unit, an alarm and a Bluetooth receiving module; the timer is connected with a first I/O port of the central processing unit, and a second I/O port of the central processing unit is connected with the alarm; the Bluetooth receiving module is connected with a third I/O port of the central processing unit.

Furthermore, a fourth I/O interface of the central processing unit is connected with the serpentine piezoresistive sensor.

Compared with the prior art, the utility model discloses following beneficial effect has: the tourniquet can acquire the stretching signal of the flexible film through the serpentine piezoresistive sensor and transmit the stretching signal to the central processing unit, when the stretching force exceeds the threshold value, the alarm sends out an alarm signal, and medical personnel can adjust the tightness of the tourniquet in time to prevent the tourniquet buckle from being too tight; the utility model discloses a tourniquet passes through pressure sensor and triggers the time-recorder timing, when it times 50s, gives central processing unit with timing signal transmission, and central processing unit control alarm sends alarm signal, and medical personnel can in time untie tourniquet. The utility model has the characteristics of convenient use.

Drawings

Fig. 1 is a schematic structural view of the tourniquet of the present invention;

fig. 2 is a schematic structural diagram of the signal processing module of the present invention;

the device comprises a flexible film 1, a serpentine piezoresistive sensor 2, asignal processing module 3, a magic tape 4, apressure sensor 5, atimer 31, acentral processing unit 32, analarm 33 and a Bluetoothreceiving module 34.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, the structure of the tourniquet of the present invention is schematically illustrated, and the tourniquet includes: the sensor comprises a flexible film 1, a serpentine piezoresistive sensor 2, asignal processing module 3, a magic tape 4 and apressure sensor 5; the serpentine piezoresistive sensor 2 is arranged on the flexible film 1, the flexible film adopted by the utility model is polydimethylsiloxane which is formed by curing dimethylsiloxane and curing agent according to the mass ratio of 10:1, and the polydimethylsiloxane has the characteristic of good flexibility, can be completely fitted with the skin, and can not generate uncomfortable feeling to the skin in the using process. The utility model provides a serpentine piezoresistive sensor 2 forms the serpentine structure by copper nano wire staggered arrangement, and the copper nano wire is poured into a mould in polydimethylsiloxane, has greatly promoted the sensing ability of copper nano wire on the one hand, and on the other hand has increased the life of copper nano wire. The serpentine piezoresistive sensor 2 is arranged in the center of the flexible film 1, the length of the serpentine piezoresistive sensor 2 is not more than 3cm, and is not more than 3cm, so that the serpentine piezoresistive sensor 2 is positioned below an arm in the use process, and the serpentine piezoresistive sensor 2 only acquires piezoresistive signals when the flexible film 1 is stretched; if the length of the serpentine piezoresistive sensor 2 is too long, the serpentine piezoresistive sensor 2 extends to the side surface of the arm when the tourniquet is in use, and the serpentine piezoresistive sensor 2 deforms on the side surface of the arm to generate a piezoresistive signal, so that the amount of deformation of the tourniquet acquired by the serpentine piezoresistive sensor 2 is inaccurate. Snake pattern piezoresistive sensor 2 is connected withsignal processing module 3, and magic subsides 4 set up on flexible film 1's both sides, the magic is pasted and is equipped withpressure sensor 5 on 4, andpressure sensor 5 is connected withsignal processing module 3, is equipped with bluetooth sending module onpressure sensor 5, pastes 4 when pasting tightly when medical personnel will press the magic on the arteries and veins area, andpressure sensor 5 gathers pressure signal to give bluetooth emission module with pressure signal.

As fig. 2 is the schematic structural diagram of thesignal processing module 3 of the present invention, thesignal processing module 3 includes: atimer 31, acentral processing unit 32, analarm 33 and a Bluetoothreceiving module 34; thebluetooth receiving module 34 is connected to the third I/O port of thecentral processing unit 32, and thebluetooth receiving module 34 is configured to receive the pressure signal transmitted by the bluetooth transmitting module and transmit the pressure signal to thecentral processing unit 32; thetimer 31 is connected with a first I/O port of thecentral processing unit 32, the central processing unit controls thetimer 31 to start timing, when thetimer 31 counts 50s, a timing signal is transmitted to thecentral processing unit 32, a second I/O port of thecentral processing unit 32 is connected with thealarm 33, thealarm 33 is controlled to give an alarm, and at the moment, the medical staff loosens the tourniquet; the fourth I/O interface of thecentral processing unit 32 is connected to the serpentine piezoresistive sensor 2, when the tourniquet is in use, the piezoresistive signal of the serpentine piezoresistive sensor 2 is transmitted to thecentral processing unit 32, when the piezoresistive signal is increased by 80% relative to the piezoresistive signal in the state of not using the tourniquet, thecentral processing unit 32 controls thealarm 33 to alarm, and at this time, the medical staff adjusts the tightness degree of the tourniquet.

The utility model discloses a press arteries and veins area can effectively avoid pressing arteries and veins area live time overlength and the harm that the arm brought excessively tightly in the use, and has greatly promoted the use travelling comfort in pressing arteries and veins area.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, a plurality of modifications and decorations without departing from the principle of the present invention should be considered as the protection scope of the present invention.

Claims (9)

1. A tourniquet comprising: the flexible film (1), the serpentine piezoresistive sensor (2), the signal processing module (3), the magic tape (4) and the pressure sensor (5); the sensor is characterized in that the serpentine piezoresistive sensor (2) is arranged on the flexible film (1), the serpentine piezoresistive sensor (2) is connected with the signal processing module (3), the magic tapes (4) are arranged on two sides of the flexible film (1), the magic tapes (4) are provided with pressure sensors (5), and the pressure sensors (5) are connected with the signal processing module (3).

2. Tourniquet according to claim 1, characterized in that the flexible film (1) is a polydimethylsiloxane film.

3. The tourniquet of claim 1 wherein the serpentine piezoresistive sensor (2) is a serpentine structure formed by a staggered arrangement of copper nanowires.

4. The tourniquet of claim 3 wherein the copper nanowires are cast in polydimethylsiloxane.

5. Tourniquet according to claim 1, characterized in that the serpentine piezoresistive sensor (2) is arranged in the centre of the flexible membrane (1).

6. Tourniquet according to claim 1, characterized in that the length of the serpentine piezoresistive sensor (2) does not exceed 3 cm.

7. The tourniquet according to claim 1, wherein the pressure sensor (5) is provided with a bluetooth transmission module.

8. Tourniquet according to claim 1, characterized in that the signal processing module (3) comprises: the device comprises a timer (31), a central processing unit (32), an alarm (33) and a Bluetooth receiving module (34); the timer (31) is connected with a first I/O port of the central processing unit (32), and a second I/O port of the central processing unit (32) is connected with the alarm (33); the Bluetooth receiving module (34) is connected with a third I/O port of the central processing unit (32).

9. Tourniquet according to claim 8, characterized in that the fourth I/O interface of the central processor (32) is connected to a serpentine piezoresistive sensor (2).

Images