阅读说明：本技术 一种基于液态金属的柔性电热疗贴 (Flexible electric heat therapy paste based on liquid metal ) 是由 梁书婷 李洁 黄孟军 谢志刚 于 2019-10-18 设计创作，主要内容包括：本发明提供了一种基于液态金属的柔性电热疗贴,它是由柔性基底(1)、液态金属(2)、封装层(3)、导线(4)、开关(5)、电源(6)组成。所述柔性基底(1)上开有凹槽(11),所述液态金属(2)充满所述凹槽(11),所述封装层(3)在所述凹槽(11)上方；所述开关(5)、电源(6)、导线(4)与液态金属(2)组成一个闭合回路；所述凹槽为“H”形(111)、“干”字形(112)、“士”字形(113)以及“X”形(114)组成的组合图形。本发明提供的电热疗贴可以重复使用、更柔软、可折叠、与人体贴合度更好、发热更均匀；性价比更高、使用领域更广。(The invention provides a flexible electric heat therapy paste based on liquid metal, which consists of a flexible substrate (1), liquid metal (2), a packaging layer (3), a lead (4), a switch (5) and a power supply (6). A groove (11) is formed in the flexible substrate (1), the groove (11) is filled with the liquid metal (2), and the packaging layer (3) is arranged above the groove (11); the switch (5), the power supply (6), the lead (4) and the liquid metal (2) form a closed loop; the groove is a combined pattern consisting of an H shape (111), a dry shape (112), a Chinese character 'shi' shape (113) and an X shape (114). The electric heat therapy patch provided by the invention can be repeatedly used, is softer and foldable, has better fit degree with a human body, and generates heat more uniformly; the cost performance is higher, and the application field is wider.)

1. The utility model provides a paste is treated to flexible electric heat based on liquid metal which characterized in that: the packaging structure comprises a flexible substrate (1), liquid metal (2), a packaging layer (3), a lead (4), a switch (5) and a power supply (6); the flexible substrate (1) is provided with grooves (11), the liquid metal (2) is uniformly distributed in the grooves (11) and fills the grooves (11), the grooves (11) are continuous, and the packaging layer (3) is arranged above the grooves (11); the number of the leads (4) is two, one end of each lead is respectively connected with the liquid metal (2) in the groove (11), the other end of each lead is connected with the switch (5) and the power supply (6), and the switch (5), the power supply (6), the leads (4) and the liquid metal (2) form a closed loop;

the groove (11) is a combined graph on the flexible substrate (1), the middle position of the combined graph is in an H shape (111) which is connected with each other, the upper part of the middle point of the transverse line of the H shape (111) is connected with a dry shape (112), the lower part of the middle point of the transverse line is connected with a Chinese character 'ji' shape (113), and the two transverse lines of the dry shape (112) and the Chinese character 'ji' shape (113) are shorter than the transverse line of the H shape (111); two end points of a transverse line at the upper end of the dry-shaped part (112) and two end points of a transverse line at the lower end of the Chinese character 'ji' (113) are respectively connected with an end point of an X-shaped part (114); the upper and lower part patterns of the groove (11) are symmetrical about the transverse line of the H-shaped groove (111).

2. The flexible electric heat therapy patch based on liquid metal as claimed in claim 1, wherein: the wire (4) is connected to the liquid metal (2) in the end of the "X" shape (114), and the end of the "X" shape (114) is not connected to the "Chinese character' shi" (113) or the "dry" shape (112).

3. The flexible electric heat therapy patch based on liquid metal as claimed in claim 2, characterized in that: the liquid metal (2) is prepared by uniformly mixing gallium, indium, tin and bismuth, and the mass ratio of the liquid metal to the liquid metal is 62-68: 23-25: 5-8: 3-6.

4. The flexible electric heat therapy patch based on liquid metal as claimed in claim 3, characterized in that: the flexible substrate (1) is a composition of the crosslinking agent and the crosslinking agent, and the mass ratio of the crosslinking agent to the flexible substrate is 1-2: 10-1; the agent is one of PDMS, PVC and silica gel.

5. The flexible electric heat therapy patch based on liquid metal as claimed in claim 4, wherein: the packaging layer (3) is a composition of packaging glue and a cross-linking agent, and the mass ratio of the packaging glue to the cross-linking agent is 3-5: 1-1.5; the packaging adhesive is one of epoxy resin and polyacrylate.

6. The flexible electric heat therapy patch based on liquid metal as claimed in claim 5, wherein: the groove (11) is carved by adopting a laser carving technology.

7. The flexible electric heat therapy patch based on liquid metal as claimed in claim 6, wherein: the power supply (6) is a fixed power supply or a mobile power supply.

Technical Field

The invention relates to the technical field of physiotherapy, in particular to a flexible electric heat therapy patch based on liquid metal.

Background

At present, the demand for continuous low temperature heating is increasing. Women, for example, who have symptoms of dysmenorrhea during their physiological period and who need to relieve the pain by a physical method of continuous low-temperature heating, generally choose a warming patch. The heating material of the baby warmer mainly comprises iron powder, activated carbon, vermiculite, water, salt and the like. The heating principle is that iron powder is naturally oxidized and releases heat. The bag material is special because the reaction can not occur before the use, and consists of a raw material layer, a gelatin layer and a non-woven bag. The non-woven bag is made of microporous permeable membrane, and has a conventional air-impermeable outer bag. When in use, the outer bag is removed, the inner bag (non-woven bag) is exposed in the air, and oxygen in the air enters the inner bag through the air-permeable film. The time and temperature of heat release are controlled by the oxygen permeation rate of the breathable film, if the oxygen permeation is too fast, the heat can be dissipated in a short time, and the skin can be scalded; if the oxygen permeation is too slow, the heating effect is not achieved.

Meanwhile, the number of elderly people, sedentary office workers, and postoperative patients is also increasing, and there is a great demand for a physical method of sustaining low temperature. Such as: for the old people with increasingly poor physique, knees and waist are fragile in winter, so certain protection is needed, such as wearing waist support and knee pads which can generate heat; for long-sitting office workers, the neck, shoulder, waist and back of the office workers continuously maintain a firm posture, and intervertebral discs and interspinous ligaments are in an important opposite condition for a long time, so that the neck, shoulder, waist and back of the office workers are hard to feel sore and hard to pitch back. Because prolonged sedentary, recurrent remission of blood, and prolonged cardiac arrest, cardiac atrophy, sustained heating is required to alleviate this pain; for postoperative patients, the tissue parts such as joints and skin and the like after the operation may cause cell activity reduction and slow tissue recovery due to low temperature, and the temperature of postoperative wounds needs to be improved by a low-temperature heating method, so that the tissue activity of the human body can be quickly recovered, and the wound healing speed is accelerated.

However, the existing protective patches for low-temperature heating, such as the warmer and the like, have the defects of unreusable property, insufficient softness, poor attaching effect and the like, cannot be perfectly attached when contacting with hard parts, such as knees, waist, cervical vertebra and the like, cause a large amount of heat to be dissipated, and have no economical efficiency and wide applicability.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a flexible electric heat therapy paste based on liquid metal, which has good fitness with a human body and can keep good fitness with skin even if the paste is used at hard joints such as knees, cervical vertebra and the like; meanwhile, the invention has the advantages of uniform heating, repeated utilization and wide application field.

The purpose of the invention is realized by the following technical scheme:

The utility model provides a paste is treated to flexible electric heat based on liquid metal which characterized in that: the packaging structure comprises a flexible substrate, liquid metal, a packaging layer, a lead, a switch and a power supply; the flexible substrate is provided with grooves, the liquid metal is uniformly distributed in the grooves and fills the grooves, the grooves are continuous, and the packaging layer is arranged above the grooves and used for sealing the liquid metal; the two wires are provided, one end of each wire is respectively connected with the liquid metal in the groove, the other end of each wire is connected with the switch and the power supply, and the switch, the power supply, the wires and the liquid metal form a closed loop;

The groove is a combined graph on the flexible substrate, the middle position of the combined graph is in an H shape which is mutually connected, the upper part of the middle point of the transverse line of the H shape is connected with a dry shape, the lower part of the middle point of the transverse line is connected with a Chinese character 'ji', and the two transverse lines of the dry shape and the Chinese character 'ji' are both shorter than the transverse line of the H shape; two end points of the transverse line of the upper end of the 'dry' shape and two end points of the transverse line of the lower end of the's' shape are respectively connected with an X-shaped end point; the upper and lower part patterns of the groove are symmetrical about the transverse line of the H shape.

when the electric heat therapy paste is contacted with hard joints such as hard joints of knees, cervical vertebrae and the like, the flexible substrate of the electric heat therapy paste is inevitably bent and folded; due to the influence of bending and folding, the liquid metal in the groove flows, so that the flexible substrate is bent or the folding salient points have the phenomena of break points containing little or no liquid metal, circuit break or uneven temperature of the electric heat therapy paste, and further certain parts are overheated or overcooled to influence the normal use of the electric heat therapy paste, or even damage the skin of a human body. The groove of the invention adopts the structural combination of H shape, dry shape, Chinese character 'shi' shape and X shape, so as to prevent the phenomenon of breaking point caused by the convergence of liquid metal at one point or a plurality of points due to the deformation of the flexible substrate when bending and folding, ensure the temperature uniformity of the electric heat therapy paste under various conditions of plane, bending, folding and the like, and simultaneously ensure the bonding degree and heat productivity of the electric heat therapy paste and a human body.

Further, in order to further ensure that no break point occurs and the temperature uniformity of the electrotherapy paste is ensured, the width of the groove is 500 um-2 mm, and the depth is 20 um-1 mm.

Further, in order to ensure the highest utilization efficiency of liquid metal and guarantee the heat productivity, the conducting wire is connected with the liquid metal in the X-shaped end point, and the X-shaped end point is not connected with the Chinese character ' shi ' or the dry ' shape.

Further, in order to ensure the heating efficiency and the temperature uniformity of the electrotherapy paste, the liquid metal is formed by uniformly mixing gallium, indium, tin and bismuth, and the mass ratio of the liquid metal is 62-68: 23-25: 5-8: 3-6.

Furthermore, in order to ensure the flexibility of the flexible substrate and further ensure the fitness of the electrotherapy paste and a human body, the flexible substrate adopts a composition of the self-crosslinking agent and the crosslinking agent, and the mass ratio of the self-crosslinking agent to the crosslinking agent is 1-2: 10-1; the agent is one of PDMS, PVC and silica gel.

Further, in order to ensure the sealing performance of the package and ensure that liquid metal does not flow out, the package layer is made of a composition of package glue and a cross-linking agent, and the mass ratio of the package glue to the cross-linking agent is 3-5: 1-1.5; the packaging adhesive is one of epoxy resin and polyacrylate.

Further, the groove is carved by adopting a laser carving technology.

Further, the power supply is a fixed power supply or a mobile power supply.

the invention has the following technical effects:

According to the invention, by combining the flexible substrate, the liquid metal and the packaging layer, the electric heat therapy paste is widely applied, and the good attaching degree of the electric heat therapy paste to a human body is ensured; due to the characteristics of the liquid metal, the continuous low-temperature heating and the reutilization of the electric heat therapy paste are ensured, and the practicability and the economical efficiency of the electric heat therapy paste are ensured. Simultaneously, through the ratio of liquid metal and the design of groove structure, ensure the homogeneity of electrotherapy subsides temperature, prevent that the electrotherapy from pasting the bending, when folding, because of the breakpoint appears in the recess influences the electrotherapy and pastes the phenomenon that generates heat or the temperature is uneven, and then ensure the stability of electrotherapy subsides function, have more the security.

Drawings

Fig. 1 is a schematic structural view of an electrothermal therapy patch in an embodiment of the present invention.

3 fig. 3 2 3 is 3 an 3 enlarged 3 sectional 3 view 3 taken 3 along 3 line 3 a 3- 3 a 3 of 3 fig. 3 1 3. 3

Fig. 3 is a schematic structural diagram of the shape of the groove in the embodiment of the invention.

Wherein, 1, a flexible substrate; 11. a groove; 111. an "H" shape; 112. a shape like a Chinese character 'gan'; 113. a Chinese character 'shi' shape; 114. an "X" shape; 2. a liquid metal; 3. a packaging layer; 4. a wire; 5. a switch; 6. a power source.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments, but not all embodiments, of the present invention.

As shown in fig. 1-3, a flexible electric heat therapy paste based on liquid metal is characterized in that: the packaging structure comprises a flexible substrate 1, liquid metal 2, a packaging layer 3, a lead 4, a switch 5 and a power supply 6; open flutedly 11 on the flexible base 1, in order to further guarantee that breakpoint and electrotherapy paste the homogeneity of temperature not appear, recess 11 width is 500um ~ 2mm, the degree of depth is 20um ~ 1 mm. The liquid metal 2 is uniformly distributed in the groove 11 and fills the groove 11, the groove 11 is continuous, and the packaging layer 3 is arranged above the groove 11 and used for sealing the liquid metal 2; the two wires 4 are provided, one ends of the two wires are respectively connected with the liquid metal 2 in the groove 11, the other ends of the two wires are connected with the switch 5 and the power supply 6, and the switch 5, the power supply 6, the wires 4 and the liquid metal 2 form a closed loop; the power supply 6 is a fixed power supply or a mobile power supply. In order to ensure the maximum utilization efficiency of the liquid metal and to guarantee the heat generation, the conducting wire 4 is connected with the liquid metal 2 in the end of the X-shaped part 114, and the end of the X-shaped part 114 is not connected with the Chinese character ' ji ' 113 or the dry ' 112. The grooves 11 are engraved by laser engraving.

The groove 11 is a combined graph on the flexible substrate 1, the middle position of the combined graph is in an H shape 111 which is connected with each other, the upper part of the middle point of the transverse line of the H shape 111 is connected with a dry shape 112, the lower part of the middle point of the transverse line is connected with a Chinese character 'ji' shape 113, and the two transverse lines of the dry shape 112 and the Chinese character 'ji' shape 113 are shorter than the transverse line of the H shape 111; two end points of the transverse line at the upper end of the dry-shaped figure 112 and two end points of the transverse line at the lower end of the Chinese character 'ji' shaped figure 113 are respectively connected with an end point of an X-shaped figure 114; the upper and lower patterns of the groove 11 are symmetrical about the transverse line of the "H" shape 111. As shown in FIG. 3, the middle position of the groove 11 is composed of two mutually connected H-shaped 111, the upper part of the middle point of the horizontal line of the H-shaped 111 is connected with two dry-shaped 112, the lower part of the middle point of the horizontal line is connected with two fly-shaped 113, the horizontal line of the upper end of each dry-shaped 112 is respectively connected with two X-shaped 114, and the horizontal line of the lower end of each fly-shaped 113 is respectively connected with two X-shaped 114.

In order to ensure the heating efficiency and the temperature uniformity of the electrotherapy paste, the liquid metal 2 is formed by uniformly mixing gallium, indium, tin and bismuth, and the mass ratio of the liquid metal is 62-68: 23-25: 5-8: 3-6, preferably 65:24:7: 4. The preparation method of the liquid metal comprises the following steps: placing the prepared liquid metal in a proper beaker, placing the beaker in a water bath kettle, setting the temperature of the water bath kettle to be 70 ℃, heating the liquid metal in a water bath at 70 ℃, and heating to enable the prepared metals to reach a molten state; then a magnetic stirring bar is added into the beaker, and the metal which is already in a molten state is magnetically stirred for 1 hour at the temperature of below 70 ℃ to obtain the liquid metal 2 which is uniformly mixed.

in order to ensure the flexibility of the flexible substrate 1 and further ensure the fitness of the electrotherapy paste and a human body, the flexible substrate 1 adopts a composition of the agent and a cross-linking agent, and the mass ratio of the agent to the cross-linking agent is 1-2: 10-1, and the optimal ratio is 1: 10; the agent is one of PDMS, PVC and silica gel, and PDMS is preferred. The preparation method of the flexible substrate 1 comprises the following steps: the preparation and the cross-linking agent are mixed and stirred uniformly by a glass rod, and the uniformly stirred composition is slowly poured into a culture dish after 10min (the thickness of the colloid in the culture dish is controlled to be about 2-4 mm). The poured colloid is inclined left and right to make the colloid evenly spread; and observing whether the colloid in the culture dish has bubbles, if so, blowing off the bubbles by using a disposable rubber-tipped dropper, and if not, lightly shaking the culture medium until the bubbles are removed. Finally, the culture dish is placed at an ultraviolet ray for irradiation, and the required flexible substrate 1 is obtained after 48 hours.

In order to ensure the sealing performance of the package and ensure that the liquid metal 2 does not flow outwards, the package layer 3 is a composition of package glue and a cross-linking agent, the mass ratio of the package glue to the cross-linking agent is 3-5: 1-1.5, and the preferable ratio is 3: 1; the packaging adhesive is one of epoxy resin and polyacrylate, and preferably the epoxy resin. The preparation method of the packaging layer 3 comprises the following steps: mixing the packaging adhesive and the cross-linking agent, and uniformly stirring for 5 min.

The electric heat therapy patch provided by the invention can be repeatedly used, is softer and foldable, has better fit degree with a human body, and generates heat more uniformly; the cost performance is higher, the application field is wider, and the knee-pad and waist-pad thermal-insulation medical instrument can be used for wearing knee pads and waist pads of the old in winter, waist soreness and pain links of sedentary people, thermal insulation and recovery of wounds of patients after operation and the like.