CN111921096A - A kind of electronic band-aid and preparation method thereof - Google Patents

Abstract

The invention belongs to the field of miniature electronic biomedical equipment, and specifically discloses an electronic Band-Aid, comprising a flexible base layer, a conductive layer and a flexible packaging layer, wherein the conductive layer is arranged between the flexible base layer and the flexible packaging layer; the conductive layer is a flexible circuit, A plurality of LED elements capable of emitting blue-violet light are arranged on the flexible circuit, and the flexible circuit is connected with a miniature battery and a control switch; an adhesive layer is arranged on the side surface of the flexible base layer in contact with the human skin. The flexible base layer, conductive layer and encapsulation layer can all be bent, folded and stretched to ensure that the Band-Aid fits the wound better. The electronic Band-Aid is small in size and easy to carry. After the LED element emits light, it can promote the growth of wound tissue and accelerate wound healing. Purpose. The invention also discloses a preparation method of the electronic band-aid, which is simple in preparation process and easy to popularize.

Description

A kind of electronic band-aid and preparation method thereof

technical field

The invention belongs to the field of miniature electronic biomedical equipment, in particular to an electronic band-aid and a preparation method thereof.

Background technique

Wound trauma is the most common type of injury in human beings engaged in production activities, and in medical treatment, surgery is also a common method in medical procedures. These activities can lead to the occurrence of wounds. Studies have shown that the blue-violet light generated by setting the wavelength of the LED at 380-460 nm, the peak value of about 410 nm and the power of about 40 mW can significantly improve the immunity of the body, thereby improving the ability of wound healing. Blue-violet light has been widely used in large medical equipment, but it is bulky and not easy to carry. The traditional wound healing process is generally through the natural healing of the skin. Severe wounds are healed through drug regulation, but the healing process takes a long time.

SUMMARY OF THE INVENTION

One of the objectives of the present invention is to provide an electronic Band-Aid, which solves the problems of long treatment period, low efficiency, and large size of the existing equipment, which is not easy to carry.

The second purpose of the present invention is to provide a preparation method of an electronic band-aid, and the preparation process is simple.

The present invention is achieved through the following technical solutions:

An electronic Band-Aid, comprising a flexible base layer, a conductive layer and a flexible packaging layer, and the conductive layer is arranged between the flexible base layer and the flexible packaging layer;

The conductive layer is a flexible circuit, a plurality of LED elements capable of emitting blue-violet light are arranged on the flexible circuit, and the flexible circuit is connected with a miniature battery and a control switch;

An adhesive layer is provided on the surface of one side of the flexible base layer in contact with the human skin.

Further, both the flexible base layer and the flexible encapsulation layer are flexible films prepared from flexible materials.

Further, the flexible material adopts Eco-flex, PDMS or PI.

Further, the conductive layer is prepared from metal foil, and the thickness of the metal foil is in the order of microns;

The conductive layer is adhered to the flexible substrate layer.

Further, the flexible circuit adopts a serpentine structure or an island bridge structure, and the LED element array is arranged on the flexible circuit.

Further, one end of the control switch is connected with the flexible circuit, and the other end is connected with the micro battery.

The invention also discloses the preparation method of the electronic Band-Aid, comprising the following steps:

S1. Spin coating a flexible material on the substrate to make a flexible base layer;

S2, making a conductive layer on the flexible base layer;

S3. Assemble LED components, control switches and miniature batteries on the conductive layer;

S4, encapsulate on the conductive layer with a flexible encapsulation layer;

S5, peeling off the flexible base layer from the substrate to obtain an electronic Band-Aid.

Further, step S1 is specifically as follows: using a glass slide as a substrate, spin-coating a flexible material on the glass slide, and drying to obtain a flexible base layer.

Further, step S2 is specifically as follows: drying the flexible base layer, then adhering the metal foil to the flexible base layer, and performing circuit processing by a laser cutting process or an etching process to obtain a flexible circuit.

Further, step S4 is specifically as follows: spin-coating a flexible material on the assembled flexible base layer and the conductive layer to obtain a flexible packaging layer.

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

The invention discloses an electronic Band-Aid, comprising a flexible base layer, a conductive layer, an LED element, a miniature battery, a control switch and an encapsulation layer, the flexible base layer is in contact with human skin, the conductive layer is a flexible circuit, the flexible base layer, the conductive layer and the The encapsulation layer is flexible and can be bent, folded and stretched to ensure that the Band-Aid fits the wound better. The electronic Band-Aid is small in size and easy to carry; when in use, the on-off of the flexible circuit is controlled by the control switch to control the light-emitting of the LED element , The operation is simple, and the LED element can promote the growth of wound tissue after emitting light to achieve the purpose of accelerating wound healing.

Further, the flexible material can be Eco-flex, PDMS or PI, all of which are environmentally friendly materials, degradable, have good biocompatibility, and will not have allergic reactions.

Further, the conductive layer is made of a metal foil with a thickness of micrometers, which has stretchable and bendable properties.

Further, the flexible circuit adopts a serpentine structure or an island bridge structure, which can ensure a certain range of stretching and folding under the condition of satisfying the electrical conductivity, without restricting the movement of the human body.

The invention also discloses a preparation method of the electronic Band-Aid. First, a flexible base layer is prepared, then a conductive layer is made on the flexible base layer, LED elements, a control switch and a miniature battery are assembled on the conductive layer, then packaged and finally peeled off. , obtain the electronic Band-Aid of the present invention. The preparation process is simple and easy to popularize.

Description of drawings

Fig. 1 is the structural representation of the electronic Band-Aid of the present invention;

Fig. 2 is the preparation flow chart of the electronic Band-Aid of the present invention.

Among them, 1 is a flexible base layer, 2 is a conductive layer, 3 is an LED element, 4 is a micro battery, 5 is a control switch, and 6 is a flexible packaging layer.

Detailed ways

The present invention will be further described in detail below in conjunction with specific embodiments, which are to explain rather than limit the present invention.

As shown in FIG. 1, the present invention discloses an electronic Band-Aid, comprising a flexible base layer 1, a conductive layer 2 and a flexible packaging layer 6, the conductive layer 2 is arranged between the flexible base layer 1 and the flexible packaging layer 6; the conductive layer 2 As a flexible circuit, a plurality of LED elements 3 capable of emitting blue-violet light are arranged on the flexible circuit, and a micro battery 4 and a control switch 5 are connected to the flexible circuit.

The side surface of the flexible base layer 1 in contact with the human skin is provided with an adhesive layer, and the adhesive layer is the same as the adhesive layer on the part of the traditional Band-Aid that is attached to the human body, which is convenient for sticking to the skin.

The flexible base layer 1 and the flexible encapsulation layer 6 are both flexible films made of degradable flexible materials, which are flexible and have stretchability, which is more conducive to fit the skin.

The flexible material can be Eco-flex, PDMS (polydimethylsiloxane) or PI (polyimide). All are environmentally friendly materials, degradable.

The micro-battery 4 is the power source for the device to work, and provides a permanent power supply for the flexible circuit, and its model is CR1220.

The control switch 5 is a small push switch that controls the energization of the flexible circuit. One end of the control switch 5 is connected to the flexible circuit, and the other end is connected to the micro battery 4 . The model of the control switch 5 is HD-25.

The conductive layer 2 is a flexible circuit prepared from a metal foil layer with a thickness of micrometers. The conductive structure of the flexible circuit is a serpentine structure or an island bridge structure. The conductive layer 2 utilizes the adhesion of the flexible base layer 1 under specific conditions. to connect.

More preferably, the LED elements 3 are connected in series in the flexible circuit, and the LED elements 3 are arranged in an array on the flexible circuit, which can uniformly emit blue-violet light with a wavelength of 380-460 nm, a peak value of about 410 nm and a power of about 40 mW, covering The wound area is large and the healing effect is good.

More preferably, the flexible base layer 1 and the flexible encapsulation layer 6 encapsulate the connected circuits, and the encapsulation film itself is transparent, so that light waves can better pass through and irradiate the wound site.

As shown in Figure 2, the preparation method of the electronic Band-Aid of the present invention specifically comprises the following steps:

(1) Spin-coating a flexible material on a substrate to make a flexible base layer 1;

(2) making the conductive layer 2 on the flexible base layer 1;

(3) assembling the LED element 3, the control switch 5 and the miniature battery 4 on the fabricated conductive layer 2;

(4) The flexible base layer 1 and the conductive layer 2 after the assembly is completed are flexibly packaged;

(5) Peeling off the packaged flexible base layer 1 from the substrate to obtain an electronic Band-Aid, and the preparation is completed.

In step (1), the specific method for making the flexible base layer 1 is as follows: using a glass slide as the substrate layer, placing the slide glass in a vacuum dispenser, dropping liquid flexible materials, and setting certain parameters to carry out Spin coating to obtain a flexible substrate with certain tensile properties. Ensure that there are no air bubbles and impurities during the preparation process.

In step (2), the specific method for preparing the conductive layer 2 on the flexible base layer 1 is as follows: drying the flexible base layer 1 obtained in step 1 in an oven or drying at room temperature to obtain a surface with a certain viscosity , and then cover the metal foil on the surface, and can use a laser cutting process or an etching process for circuit processing. The circuit design can be an island bridge structure or a serpentine structure.

The specific steps of step (3) are: placing the stretchable circuit obtained in step (2) in a dust-free closed space, and assembling the LED element 3, the control switch 5 and the micro battery 4 by using a micro holder.

The specific steps of step (4) are: placing the assembled flexible base layer 1 and conductive layer 2 on a vacuum dispenser table, dropping liquid flexible material, and spin coating to obtain a flexible packaging layer 6 . Alternatively, the natural high-protein molecular layer is used as the flexible encapsulation layer 6 for encapsulation. The natural high-protein molecular layer is a thin film separated from animal and plant tissues, and can be directly encapsulated without spin coating.

Claims (10)

1. The electronic band-aid is characterized by comprising a flexible substrate layer (1), a conductive layer (2) and a flexible packaging layer (6), wherein the conductive layer (2) is arranged between the flexible substrate layer (1) and the flexible packaging layer (6);

the conducting layer (2) is a flexible circuit, a plurality of LED elements (3) capable of emitting blue and violet light are arranged on the flexible circuit, and the flexible circuit is connected with a micro battery (4) and a control switch (5);

the surface of one side of the flexible substrate layer (1) which is contacted with the skin of a human body is provided with an adhesive layer.

2. The electronic band-aid according to claim 1, characterized in that the flexible substrate layer (1) and the flexible packaging layer (6) are both flexible films made of flexible materials.

3. The electronic band-aid according to claim 2, wherein the flexible material is Eco-flex, PDMS or PI.

4. The electronic band-aid according to claim 1, characterized in that the conductive layer (2) is made of metal foil, the thickness of which is in the micron order;

the conductive layer (2) is adhered to the flexible substrate layer (1).

5. The electronic band-aid according to claim 1, characterized in that the flexible circuit is in a serpentine structure or an island bridge structure, and the array of LED elements (3) is arranged on the flexible circuit.

6. The electronic adhesive bandage according to claim 1, characterized in that the control switch (5) is connected to the flexible circuit at one end and to the micro battery (4) at the other end.

7. The preparation method of the electronic adhesive bandage of any one of claims 1 to 6, characterized by comprising the following steps:

s1, spin-coating a flexible material on the substrate to manufacture a flexible base layer (1);

s2, manufacturing a conductive layer (2) on the flexible substrate layer (1);

s3, assembling an LED element (3), a control switch (5) and a micro battery (4) on the conducting layer (2);

s4, packaging the conductive layer (2) by using a flexible packaging layer (6);

and S5, peeling the flexible base layer (1) from the substrate to obtain the electronic band-aid.

8. The method for preparing the electronic adhesive bandage of claim 7, wherein the step S1 is specifically as follows: a glass slide is used as a substrate, a flexible material is spin-coated on the glass slide, and the flexible substrate layer (1) is obtained after drying.

9. The method for preparing the electronic adhesive bandage of claim 7, wherein the step S2 is specifically as follows: and drying the flexible substrate layer (1), then adhering the metal foil to the flexible substrate layer (1), and performing circuit processing by adopting a laser cutting process or an etching process to obtain the flexible circuit.

10. The method for preparing the electronic adhesive bandage of claim 7, wherein the step S4 is specifically as follows: and (3) spin-coating a flexible material on the assembled flexible substrate layer (1) and the assembled conductive layer (2) to obtain a flexible packaging layer (6).

Images