Novel sweat patch
By adding conductive cloth and hydrophilic membrane to the sweat patch, the problem of poor strength of the sweat patch was solved, stable electrical conduction and siphon current were achieved, and the ease of use and efficiency were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2026-03-31
AI Technical Summary
Existing sweat patches have poor strength due to the direct bonding of medical double-sided adhesive to the central double-sided adhesive. When adjusting the position, they are prone to pulling and damaging the microchannels, which affects the effectiveness and efficiency of use.
A conductive cloth and a hydrophilic film are added to the sweat patch. The conductive cloth forms a stable electrical connection with the FPC circuit board, and the hydrophilic film, together with the PET film, holds and positions the double-sided adhesive in the middle, forming a closed channel and increasing the siphon effect, thereby improving the strength of the double-sided adhesive in the middle.
It improves the strength and siphon effect of sweat patches, avoids microchannel deformation, facilitates repositioning and re-application, reduces the frequency of patch replacement, and improves work efficiency.
Smart Images
Figure CN224055978U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sweat sensor accessory product technical field, especially a novel sweat patch suitable for sweat sensor. BACKGROUND
[0002] With the rapid development of intelligent technology products, wearable sweat sensor equipment can be closely combined with human skin and can monitor physiological signals of individuals in real time. Flexible sensors with multiple functions are combined with flexible printed circuits to make "smart bands" that can be worn on different parts of the body to monitor and analyze physiological information in real time, and analyze the real-time physiological state of the wearer. This is the main development direction of the new generation of wearable health monitoring field.
[0003] Wearable sensors can monitor human motion, electrophysiology, temperature and other signals in real time. With the support of Internet of Things, flexible sensors, big data and other technologies, wearable sensors are widely used in biomedical fields such as sports monitoring, precision medicine and chronic disease prevention. By integrating sensors into wearable products such as tattoos, patches, wristbands, watches and clothes, physical, biological and chemical signals of patients can be monitored in real time. At present, most wearable body fluid detection is through sweat, tears and urine for health monitoring. Sweat composition is stable, which can provide stable monitoring data source for health protection and has good diagnostic value. Therefore, wearable sweat detection is particularly attractive.
[0004] When the wearable sweat sensor is used, it is generally fixed on the human skin through a sweat patch, and the structure of the commonly used sweat patch on the market is as follows Figure 1As shown, the sweat patch 1 comprises a middle double-sided adhesive tape 11 having a micro flow channel 111 for flowing sweat, a medical double-sided adhesive tape 12 attached to the lower end surface of the middle double-sided adhesive tape 11 and used for attaching to the skin of the human body, a first release film 13 attached to the lower end surface of the medical double-sided adhesive tape 12, an FPC circuit board 14 inlaid in the middle double-sided adhesive tape 11 and connected to the micro flow channel 111, a PET film 15 attached to the upper end surface of the middle double-sided adhesive tape 11 and covering the FPC circuit board 14, a second double-sided adhesive tape 16 attached to the upper end surface of the PET film 15 and used for fixing the wearable sweat sensor, and a second release film 17 attached to the upper end surface of the second double-sided adhesive tape 16, the medical double-sided adhesive tape 12 is provided with a liquid inlet hole 121 connected to the micro flow channel 111, and the PET film 15 and the second double-sided adhesive tape 16 are respectively provided with a second through hole 151 and a third through hole 161 corresponding to the first contact 141 of the FPC circuit board 14; in use, the second release film 17 is torn off from the second double-sided adhesive tape 16, and the wearable sweat sensor 2 is fixed on the second double-sided adhesive tape 16, and the second contact 21 of the wearable sweat sensor 2 passes through the third through hole 161 and the second through hole 151 and is connected to the first contact 141 of the FPC circuit board 14; then the first release film 13 is torn off from the medical double-sided adhesive tape 12, and the wearable sweat sensor 2 is fixed on the skin of the human body through the medical double-sided adhesive tape 12; when sweat enters the micro flow channel 111 of the middle double-sided adhesive tape 11 through the liquid inlet hole 12 of the medical double-sided adhesive tape 12, the sweat is driven to the FPC circuit board 14 by capillary action of the micro flow channel 111, and then the sweat is transmitted to the wearable sweat sensor 2 by the first contact 141 of the FPC circuit board 14, thereby achieving the purpose of sweat detection.
[0005] However, the sweat patch 1 has the following disadvantages: since the medical double-sided adhesive tape 12 is directly attached to the lower end surface of the middle double-sided adhesive tape 11, and both the medical double-sided adhesive tape 12 and the middle double-sided adhesive tape 11 are very soft and easy to deform, the strength of the entire sweat patch 1 is poor; when the sweat patch 1 is attached to the skin of the human body through the medical double-sided adhesive tape 12, it is found that the attachment effect is poor, and when the sweat patch 1 is torn off from the skin of the human body, adjusted and then attached to the skin of the human body again, it is very likely that the middle double-sided adhesive tape 11 is pulled and deformed due to the direct attachment of the medical double-sided adhesive tape 12 and the middle double-sided adhesive tape 11, which damages the micro flow channel 111, affects the effect of guiding sweat of the micro flow channel 111, and even causes the micro flow channel 111 to fail, resulting in damage of the entire sweat patch 1, and the wearable sweat sensor 2 needs to be replaced with a new sweat patch 1, which is very inconvenient to use, affects the efficiency, and causes great trouble to the user.
[0006] Therefore, the present inventors propose the following technical solutions. The utility model discloses a sweat patch and wearable sweat sensor.
[0007] The utility model discloses a novel sweat patch which overcomes the defects of the prior art.
[0008] In order to solve the above technical problems, the utility model adopts the following technical scheme: the novel sweat patch comprises: a middle double-sided adhesive with a microfluidic channel for circulating sweat, the middle double-sided adhesive is provided with an FPC circuit board connected with the microfluidic channel in the middle, the FPC circuit board has a first contact point; a PET film is fixedly attached to the lower end surface of the middle double-sided adhesive, and the PET film has a first liquid inlet hole connected with the microfluidic channel; a medical double-sided adhesive for attaching to the human skin is fixedly attached to the lower end surface of the PET film, and the medical double-sided adhesive has a second liquid inlet hole corresponding to the first liquid inlet hole of the PET film, and the lower end surface of the medical double-sided adhesive is further covered with a first release film; a hydrophilic film is fixedly attached to the upper end surface of the middle double-sided adhesive to hold and position the middle double-sided adhesive together with the PET film, and the hydrophilic film is provided with a plurality of conductive cloths corresponding to the first contact point of the FPC circuit board; an equipment double-sided adhesive for fixedly attaching to the sweat sensor is fixedly attached to the upper end surface of the hydrophilic film, and the equipment double-sided adhesive is provided with a plurality of first through holes corresponding to the conductive cloths; the upper end surface of the equipment double-sided adhesive is further provided with a second release film, and the second release film further covers the first through holes.
[0009] Further, in the above technical scheme, the middle double-sided adhesive is provided with a first window, the microfluidic channel is connected with the first window through a plurality of outlets, the FPC circuit board is embedded in the first window, the first contact point of the FPC circuit board is connected with the outlets of the microfluidic channel one by one, the hydrophilic film and the PET film hold and cover the FPC circuit board in a clamping manner, and the inlet of the microfluidic channel is connected with the first liquid inlet hole.
[0010] Further, in the above technical scheme, the hydrophilic film is provided with a plurality of second windows penetrating the upper and lower end surfaces, and the conductive cloths are embedded in the second windows one by one and in contact with the first contact point of the FPC circuit board.
[0011] Further, in the above technical scheme, the size of the hydrophilic film and the PET film is the same as that of the middle double-sided adhesive.
[0012] Further, in the above technical scheme, the outer side of the first release film is provided with a first lug.
[0013] Further, in the above technical scheme, the size of the equipment double-sided adhesive is smaller than that of the hydrophilic film, and the size of the equipment double-sided adhesive is the same as that of the lower end surface of the sweat sensor.
[0014] Further, in the above technical scheme, the size of the first through hole is larger than the outer size of the conductive cloth, so that the edge of the first through hole of the equipment double-sided adhesive is pressed against the outer edge of the conductive cloth.
[0015] Further, in the above technical solution, the second side of the second release film is provided with a second lug.
[0016] After the above technical scheme is adopted, the present application has the following beneficial effects compared with the prior art: the conductive cloth is added to the present application, so that the second contact of the sweat sensor and the first contact of the FPC circuit board form stable electrical conduction; the hydrophilic film is added to the present application, and the hydrophilic film is fixed on the upper end face of the middle double-sided adhesive tape to cooperate with the PET film to clamp and position the middle double-sided adhesive tape, which can not only close the upper and lower ports of the micro flow channel to form a closed channel, but also increase the siphon effect, thereby increasing the siphon effect of the sweat, and the hydrophilic film and the PET film can play a good supporting role to increase the strength of the middle double-sided adhesive tape; even if the present application is found to have poor fitting effect and needs to be torn away from the human skin, adjusted and reattached to the human skin, the present application can only pull the medical double-sided adhesive tape and the PET film, but not directly pull the middle double-sided adhesive tape, effectively avoiding the deformation of the micro flow channel of the middle double-sided adhesive tape, thereby enabling the present application to be reattached to the same human skin after being torn away from the human skin and adjusted, which is extremely convenient to use, and the sweat sensor does not need to be replaced with a new sweat patch, and the working efficiency is extremely high. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is a structural diagram of a sweat sensor;
[0018] Figure 2 is a structural exploded view of a sweat patch in the prior art;
[0019] Figure 3 is a structural exploded view of the present application. DETAILED DESCRIPTION
[0020] The present application will be further described below in conjunction with specific embodiments and drawings.
[0021] See Figure 1 and Figure 3As shown, it is a new type of sweat patch, which comprises: a middle double-sided adhesive tape 3 with a microfluidic channel 31 for passing sweat, the middle double-sided adhesive tape 3 is provided with an FPC circuit board 4 which is connected with the microfluidic channel 31, and the FPC circuit board 4 has a first contact 41; a PET film 5 is fixedly attached to the lower end surface of the middle double-sided adhesive tape 3, and the PET film 5 has a first liquid inlet hole 51 which is communicated with the microfluidic channel 31; a medical double-sided adhesive tape 6 for attaching to the human skin is fixedly attached to the lower end surface of the PET film 5, and the medical double-sided adhesive tape 6 has a second liquid inlet hole 61 which corresponds to the first liquid inlet hole 51 of the PET film 5, and the lower end surface of the medical double-sided adhesive tape 6 is further covered with a first release film 62; a hydrophilic film 7 is fixedly attached to the upper end surface of the middle double-sided adhesive tape 3 to hold and position the middle double-sided adhesive tape 3 between the PET film 5, and the hydrophilic film 7 is provided with a plurality of conductive cloths 71 which correspond to the first contact 41 of the FPC circuit board 4; a device double-sided adhesive tape 8 for attaching the sweat sensor 2 is fixedly attached to the upper end surface of the hydrophilic film 7, and the device double-sided adhesive tape 8 is provided with a plurality of first through holes 81 which correspond to the conductive cloths 71; the upper end surface of the device double-sided adhesive tape 8 is further provided with a second release film 82 which covers the first through holes 81. In use, the second release film 82 is torn off from the device double-sided adhesive tape 8 to expose the device double-sided adhesive tape 8, and the sweat sensor 2 is fixedly attached to the device double-sided adhesive tape 8, at this time, the second contact 21 of the sweat sensor 2 contacts the conductive cloth 71 through the first through hole 81 of the device double-sided adhesive tape 8, and the conductive cloth 71 is added to make the second contact 21 of the sweat sensor 2 and the first contact 41 of the FPC circuit board 4 form stable electrical conduction; then, the first release film 62 is torn off from the medical double-sided adhesive tape 6 to expose the medical double-sided adhesive tape 6, and the medical double-sided adhesive tape 6 is pasted and fixed to the human skin, thereby ensuring that the sweat sensor 2 fixed by the utility model is stably positioned on the human skin, so that the sweat on the human skin in the later period can smoothly enter the microfluidic channel 31 of the middle double-sided adhesive tape 3 through the second liquid inlet hole 61 of the medical double-sided adhesive tape 6 and the first liquid inlet hole 51 of the PET film 5, at this time, the sweat flows into the FPC circuit board 4 by the capillary action of the microfluidic channel 31, and the signal is transmitted to the sweat sensor 2 through the first contact 41, so as to achieve the purpose of sweat detection. In the later period, people can monitor the composition of sweat through the equipment to analyze the electrolyte imbalance degree, lactic acid index, sweat glucose level, dehydration condition, potential disease and calorie burning value of the human body, and then analyze the vital sign state of the human body.
[0022] The hydrophilic film 7 is fixed to the upper end face of the middle double-sided adhesive tape 3, so as to clamp and position the middle double-sided adhesive tape 3 in cooperation with the PET film 5, which can not only close the upper and lower ports of the micro flow channel 31 to form a closed channel, but also increase the siphon effect, thereby increasing the siphon effect of the sweat, and the hydrophilic film 7 and the PET film 5 can play a good supporting role to increase the strength of the middle double-sided adhesive tape 3. Even if the utility model is found to have poor fitting effect in the later stage and needs to be torn away from the skin of a person, adjusted and then reattached to the skin of the same person, the utility model can clamp and position the middle double-sided adhesive tape 3 in cooperation with the PET film 5, so that only the medical double-sided adhesive tape and the PET film 5 are pulled, and the middle double-sided adhesive tape 3 is not directly pulled, thereby effectively avoiding the deformation of the micro flow channel 31 of the middle double-sided adhesive tape 3, and the utility model can be reattached to the skin of the same person after being adjusted again after being torn away from the skin of a person, which is very convenient to use, and the sweat sensor does not need to be replaced with a new sweat patch, and the working efficiency is very high.
[0023] The first window 32 is arranged in the middle double-sided adhesive tape 3, the micro flow channel 31 is communicated with the first window 32 through a plurality of outlets 311, the FPC circuit board 4 is embedded in the first window 32, and the hydrophilic film 7 and the PET film 5 clamp and position the middle double-sided adhesive tape 3 in cooperation with the PET film 5, thereby stably positioning the FPC circuit board 4 in the middle double-sided adhesive tape 3. The first contact 41 of the FPC circuit board 4 is in one-to-one correspondence with the outlet 311 of the micro flow channel 31, the hydrophilic film 7 and the PET film 5 clamp and cover the FPC circuit board 4 in a clamping manner from top to bottom, and the inlet 312 of the micro flow channel 31 is communicated with the first liquid inlet hole 51.
[0024] The hydrophilic film 7 is provided with a plurality of second windows 72 penetrating the upper and lower end faces, the conductive cloth 71 is inlaid in the second window 72 in one-to-one correspondence and in contact with the first contact 41 of the FPC circuit board 4. The size of the first through hole 81 is greater than the outer size of the conductive cloth 71, so that the edge of the first through hole 81 of the equipment double-sided adhesive tape 8 packs and presses the outer edge of the conductive cloth 71, thereby stably positioning the conductive cloth 71 in the second window 72 of the hydrophilic film 7.
[0025] The size of the hydrophilic film 7 and the PET film 5 is the same as that of the middle double-sided adhesive tape 3, which ensures that the three are stably attached and assembled, not only the assembly structure is stable and firm, but also the appearance is beautiful.
[0026] The first lug 621 is arranged on the outer side of the first release film 62, which is convenient for tearing.
[0027] The size of the equipment double-sided adhesive tape 8 is smaller than that of the hydrophilic film 7, and the size of the equipment double-sided adhesive tape 8 is the same as that of the lower end face of the sweat sensor 2.
[0028] The outer side of the second release film 82 is provided with a second lug 821, which facilitates tearing off.
[0029] In summary, the conductive cloth 71 is added to the utility model, so that the second contact 21 of the sweat sensor 2 and the first contact 41 of the FPC circuit board 4 form stable electrical conduction; the hydrophilic film 7 is added to the utility model, which is fixed on the upper end face of the middle double-sided adhesive tape 3, so as to clamp and position the middle double-sided adhesive tape 3 on the PET film 5, which not only can close the upper and lower ports of the micro flow channel 31 to form a closed channel, but also can increase the siphon effect, thereby increasing the siphon effect of the sweat, and the hydrophilic film 7 and the PET film 5 can play a good supporting role to increase the strength of the middle double-sided adhesive tape 3. Even if the utility model is found to have poor fitting effect later and needs to be torn off from the human skin, adjusted and reattached to the human skin, the utility model can only pull the medical double-sided adhesive tape and the PET film 5, but not directly pull the middle double-sided adhesive tape 3, effectively avoiding the deformation of the micro flow channel 31 of the middle double-sided adhesive tape 3, thereby enabling the utility model to be reattached to the same human skin after being torn off from the human skin and adjusted in position, which is extremely convenient to use, without the need to replace the sweat sensor with a new sweat patch, and the working efficiency is extremely high. In addition, the utility model has the advantages of simple structure, low cost, easy implementation, and convenient use for consumers.
[0030] Of course, the above only describes specific embodiments of the utility model, and does not limit the scope of the utility model. Any equivalent changes or modifications made according to the structure, features and principles described in the utility model patent application scope should be included in the utility model patent application scope.
Claims
1. A novel sweat patch, characterized by: It comprises: The middle double-sided adhesive (3) is provided with a first window (32), the micro flow channel (31) is communicated with the first window (32) through a plurality of outlets (311), the FPC circuit board (4) is embedded in the first window (32), and the first contact (41) of the FPC circuit board (4) is in one-to-one correspondence with the outlet (311) of the micro flow channel (31). The hydrophilic film (7) is provided with a plurality of second windows (72) penetrating the upper and lower end faces, and the conductive cloth (71) is inlaid in the second window (72) in one-to-one correspondence and in contact with the first contact (41) of the FPC circuit board (4). The size of the first release film (62) is the same as that of the middle double-sided adhesive (3). The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71). The outer side of the second release film (82) is provided with a second lug (821).
2. A novel sweat patch according to claim 1, characterized by: The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71).
3. A novel sweat patch according to claim 2, characterized by: The outer side of the second release film (82) is provided with a second lug (821).
4. A novel sweat patch according to any one of claims 1-3, characterized in that: The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71).
5. A novel sweat patch according to claim 4, characterized by: The outer side of the second release film (82) is provided with a second lug (821).
6. A novel sweat patch according to claim 4, characterized by: The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71).
7. A novel sweat patch according to claim 6, characterized by: The outer side of the second release film (82) is provided with a second lug (821).
8. A novel sweat patch according to claim 4, characterized by: The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71). The outer side of the second release film (82) is provided with a second lug (821). The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71). The outer side of the second release film (82) is provided with a second lug (821). The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71). The outer side of the second release film (82) is provided with a second lug (821). The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71). The outer side of the second release film (82) is provided with a second lug (821). The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71). The outer side of the second release film (82) is provided with a second lug (821). The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71). The outer side of the second release film (82) is provided with a second lug (821). The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71). The outer side of the second release film (82) is provided with a second lug (821). The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71). The outer side of the second release film (82) is provided with a second lug (821). The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71). The outer side of the second release film (82) is provided with a second lug (821). The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71). The outer side of the second release film (82) is provided with a second lug (821). The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71). The outer side of the second release film (82) is provided with a second lug (821). The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71). The outer side of the second release film (82) is provided with a second lug (821). The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71). The outer side of the second release film (82) is provided with a second lug (821). The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71). The outer side of the second release film (82) is provided with a second lug (821). The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71). The outer side of the second release film (82) is provided with a second lug (821). The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71). The outer side of the second release film (82) is provided with a second lug (821). The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71). The outer side of the second release film (82) is provided with a second lug (821). The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71). The outer side of the second release film (82) is provided with a second lug (821). The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71). The outer side of the second release film (82) is provided with a second lug (821). The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81) of the equipment double-sided adhesive (8) edge compresses the outer edge of the conductive cloth (71). The outer side of the second release film (82) is provided with a second lug (821). The size of the first through hole (81) is larger than the outer size of the conductive cloth (71), so that the first through hole (81)