Noninvasive blood glucose monitoring patch
By providing a secondary reinforcement structure of the pressing plate, connecting tape, reinforcement ring and second adhesive layer outside the substrate of the non-invasive blood glucose monitoring plate, the problem of easy falling off of the plate is solved, and the stability and continuity of monitoring are improved.
Patent Information
- Application Number
- CN202421116868.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-05-21
AI Technical Summary
Existing non-invasive blood sugar monitoring patches are susceptible to external factors such as water stains, sweat, and dust, resulting in adhesive failure and patch falling off, affecting the continuity and accuracy of monitoring.
A pressing sheet, a connecting tape, a reinforcement ring and a second adhesive layer are provided outside the substrate to form a secondary reinforcement structure to enhance the adhesion between the substrate and the skin and prevent disengagement.
It significantly enhances the adhesion between the substrate and the skin, prevents the patch from falling off due to adhesive failure, and improves the stability and continuity of monitoring.
Smart Images
Figure CN222787741U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of blood sugar monitoring equipment, in particular to a non-invasive blood sugar monitoring patch. Background Art
[0002] A non-invasive blood glucose monitoring patch is a medical device used to continuously monitor glucose. It uses non-invasive technology to measure blood glucose through contact with the skin surface, without the need for finger prick sampling. It is mainly suitable for people with diabetes. Non-invasive blood glucose monitoring patches usually contain one or more sensors that can contact the interstitial fluid on the skin surface and estimate blood glucose levels by measuring the glucose content therein. The working principle of a non-invasive blood glucose monitoring patch may include electrochemical, optical or thermal methods. Among them, the electrochemical method is the most commonly used method, which uses the electrical signal generated by the reaction of glucose with the enzyme on the sensor to measure blood glucose levels.
[0003] The current non-invasive blood glucose monitoring patch can be directly attached to the skin surface, providing users with a convenient operation experience. However, in actual use, this connection method is easily interfered by various external factors such as water stains, sweat, and dust, resulting in adhesive failure, which causes the patch to fall off. This not only affects the continuity and accuracy of monitoring, but may also cause inconvenience to users, and even require frequent replacement of patches, increasing the cost of use. In view of this, we propose a non-invasive blood glucose monitoring patch. Utility Model Content
[0004] The utility model aims to solve one of the technical problems in the related art to at least a certain extent. To this end, one purpose of the utility model is to provide a non-invasive blood glucose monitoring patch, which has a secondary reinforcement effect on the outside of the substrate by means of a pressing sheet, a connecting belt, a reinforcement ring and a second adhesive layer arranged on the outside of the substrate, thereby preventing the substrate from being separated from the skin due to adhesive failure.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A non-invasive blood glucose monitoring patch, comprising a monitoring patch;
[0007] The monitoring patch comprises a substrate, a protrusion is coaxially fixed at the center of the bottom of the substrate, a gel layer is fixed at the center of the top surface of the substrate, a sweat sensor for reacting with glucose molecules in sweat to generate an electrical signal is arranged inside the gel layer, a central processing module for converting the electrical signal into a digital signal is arranged at one side above the sweat sensor, and a wireless transmission module for transmitting the electrical signal to the outside is arranged at one side of the central processing module; a first adhesive layer is arranged at the bottom of the substrate at the periphery of the gel layer, and a plurality of air permeable channels are opened on the first adhesive layer;
[0008] A pressing sheet is arranged above the base sheet, a through hole for plugging with the protrusion is opened at the center of the pressing sheet, a reinforcing ring is arranged around the pressing sheet, a plurality of connecting belts are fixed between the reinforcing ring and the pressing sheet, and a second adhesive layer is fixed at the bottom edge of the reinforcing ring.
[0009] In addition, the non-invasive blood glucose monitoring patch proposed in the application may also have the following additional technical features:
[0010] Specifically, the pressing sheet, the connecting belt and the reinforcing ring are an integrally formed structure, and the pressing sheet, the connecting belt and the reinforcing ring are all made of non-woven fabric.
[0011] Specifically, the cross-section of the second adhesive layer is ring-shaped, and the second adhesive layer is a medical pressure-sensitive adhesive.
[0012] Specifically, the cross-section of the gel layer is circular, and the gel layer is made of polyvinyl alcohol hydrogel material.
[0013] Specifically, the sweat sensor, the central processing module and the wireless transmission module are integrally cast with the gel layer.
[0014] Specifically, the air permeable channels are distributed in a circular shape with equal intervals, and the number of the air permeable channels is 5-10.
[0015] Compared with the prior art, the utility model has the following beneficial effects:
[0016] The pressure sheet, connecting belt, reinforcement ring and second adhesive layer arranged outside the substrate provide a secondary reinforcement effect on the outside of the substrate, thereby preventing the substrate from being separated from the skin due to adhesive failure. This design not only significantly enhances the adhesion between the substrate and the skin, but also effectively prevents the substrate from being separated from the skin due to adhesive failure. This reinforcement structure not only improves the stability of the non-invasive blood glucose monitoring patch, but also ensures the continuity of monitoring. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0018] Figure 2 It is a schematic diagram of the overall explosion structure of the utility model;
[0019] Figure 3 It is a schematic diagram of the structure of the substrate in the utility model;
[0020] Figure 4 This is one of the partial structural cross-sectional views in the utility model;
[0021] Figure 5 This is the second partial structural cross-sectional view of the utility model;
[0022] Figure 6 It is a partial structural schematic diagram of the utility model.
[0023] In the figure:
[0024] 1. Monitoring patch; 10. Base sheet; 101. Protrusion; 11. First adhesive layer; 111. Breathable channel; 12. Gel layer; 13. Central processing module; 14. Wireless transmission module; 15. Sweat sensor; 16. Reinforcement ring; 17. Second adhesive layer; 18. Connecting belt; 19. Pressing sheet; 191. Through hole. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] This embodiment provides a technical solution:
[0027] See also Figure 1-Figure 6 , a non-invasive blood glucose monitoring patch, including a monitoring patch 1. The monitoring patch 1 comprises a substrate 10, a protrusion 101 is coaxially fixed at the bottom center of the substrate 10, a gel layer 12 is fixed at the top center of the substrate 10, a sweat sensor 15 for reacting with glucose molecules in sweat to generate an electrical signal is arranged inside the gel layer 12, a central processing module 13 for converting the electrical signal into a digital signal is arranged at one side above the sweat sensor 15, and a wireless transmission module 14 for transmitting the electrical signal to the outside is arranged at one side of the central processing module 13; a first adhesive layer 11 is arranged at the bottom of the substrate 10 at the periphery of the gel layer 12, and a plurality of air permeable channels 111 are provided on the first adhesive layer 11; a pressing sheet 19 is arranged above the substrate 10, a through hole 191 for plugging and matching with the protrusion 101 is arranged at the center of the pressing sheet 19, a reinforcing ring 16 is arranged at the periphery of the pressing sheet 19, a plurality of connecting belts 18 are fixed between the reinforcing ring 16 and the pressing sheet 19, and a second adhesive layer 17 is fixed at the bottom edge of the reinforcing ring 16.
[0028] Specifically, the pressing sheet 19, the connecting belt 18 and the reinforcing ring 16 are an integrally formed structure, and the pressing sheet 19, the connecting belt 18 and the reinforcing ring 16 are all made of non-woven fabric. The integrally formed structure not only enhances the connection strength between the pressing sheet 19, the connecting belt 18 and the reinforcing ring 16, but also simplifies the production process and improves the stability of the overall structure. The woven fabric material has good air permeability and biocompatibility, which can ensure the user's comfort during use while reducing skin irritation.
[0029] Specifically, the cross-sectional shape of the second adhesive layer 17 is annular, and the second adhesive layer 17 is a medical pressure-sensitive adhesive. The annular design not only increases the bonding area of the second adhesive layer 17, but also improves the uniformity and stability of the bonding, effectively preventing the patch from falling off. The medical pressure-sensitive adhesive has the effects of stable bonding and is not easy to irritate the skin.
[0030] Specifically, the cross-section of the gel layer 12 is circular, and the gel layer 12 is made of polyvinyl alcohol hydrogel material. The polyvinyl alcohol hydrogel material has good hygroscopicity, and the material can absorb sweat on the skin surface for detection by the sweat sensor 15.
[0031] Specifically, the sweat sensor 15, the central processing module 13 and the wireless transmission module 14 are integrally cast with the gel layer 12. This design eliminates the connection gaps between the components, improves the sealing and stability of the overall structure, and increases the service life of the sweat sensor 15, the central processing module 13 and the wireless transmission module 14.
[0032] Specifically, the air permeable channels 111 are distributed in an annular shape with equal spacing, and the number of the air permeable channels 111 is 5 to 10. The preferred number of the air permeable channels 111 is 6. The arrangement of the air permeable channels 111 not only ensures the air permeability of the skin, but also avoids the intrusion of dust and water stains, thereby extending the service life of the patch.
[0033] It can be understood that the inner diameter of the reinforcement ring 16 in this embodiment is larger than the diameter of the substrate 10. When the reinforcement ring 16 is bonded to the outside of the substrate 10, the second adhesive layer 17 will not contact the substrate 10. When the second adhesive layer 17 is not firmly bonded at a later stage, the external reinforcement ring 16, connecting tape 18 and pressing sheet 19 can be replaced, and tearing off the second adhesive layer 17 will not cause the substrate 10 to be torn off, thereby ensuring the normal use of the substrate 10; at the same time, the gaps between the multiple connecting tapes 18 are mainly used to improve the air permeability at the substrate 10 and improve the comfort of use.
[0034] It should be added that when the glucose molecules in the sweat react with the glucose oxidase on the sensor, hydrogen peroxide is generated. An electrical signal is generated during the reaction. The strength of the electrical signal is proportional to the concentration of glucose. The electrical signal will be amplified and processed by the circuit inside the sensor and converted into a readable digital signal. The digital signal can be transmitted to mobile phones, computers and other devices wirelessly or wired for display and analysis. Through specific algorithms and software, this digital signal can be converted into a numerical value of blood sugar concentration, thereby realizing non-invasive monitoring of blood sugar. The above are all existing conventional technologies and will not be repeated here.
[0035] During specific use, the user first aligns the first adhesive layer 11 at the bottom of the base sheet 10 with the implantation site on the skin and sticks it down. The first adhesive layer 11 is then adhered and fixed to the skin. Then the user aligns the through hole 191 with the protrusion 101 and inserts it, and aligns the second adhesive layer 17 with the skin and sticks it down. At this time, the pressing sheet 19 and multiple connecting belts 18 are pressed tightly against the outside of the base sheet 10 to reinforce the base sheet 10.
[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. A non-invasive blood glucose monitoring patch, comprising a monitoring patch (1), characterized in that: The monitoring patch (1) comprises a substrate (10), a protrusion (101) is coaxially fixed at the center of the bottom of the substrate (10), a gel layer (12) is fixed at the center of the top surface of the substrate (10), a sweat sensor (15) for reacting with glucose molecules in sweat to generate an electrical signal is arranged inside the gel layer (12), a central processing module (13) for converting the electrical signal into a digital signal is arranged at one side above the sweat sensor (15), and a wireless transmission module (14) for transmitting the electrical signal to the outside is arranged at one side of the central processing module (13); a first adhesive layer (11) is arranged at the bottom of the substrate (10) and located around the gel layer (12), and a plurality of air permeable channels (111) are opened on the first adhesive layer (11); A pressing sheet (19) is provided above the base sheet (10), a through hole (191) for plugging and cooperating with the protruding portion (101) is provided at the center of the pressing sheet (19), a reinforcing ring (16) is provided on the circumference of the pressing sheet (19), a plurality of connecting strips (18) are fixed between the reinforcing ring (16) and the pressing sheet (19), and a second adhesive layer (17) is fixed at the bottom edge of the reinforcing ring (16).
2. The non-invasive blood glucose monitoring patch according to claim 1, characterized in that: The pressing sheet (19), the connecting belt (18) and the reinforcing ring (16) are an integrally formed structure, and the pressing sheet (19), the connecting belt (18) and the reinforcing ring (16) are all manufactured products made of non-woven fabric.
3. The non-invasive blood glucose monitoring patch according to claim 1, characterized in that: The cross-sectional shape of the second adhesive layer (17) is annular, and the second adhesive layer (17) is a medical pressure-sensitive adhesive.
4. The non-invasive blood glucose monitoring patch according to claim 1, characterized in that: The cross-sectional shape of the gel layer (12) is circular, and the gel layer (12) is a product made of polyvinyl alcohol hydrogel material.
5. The non-invasive blood glucose monitoring patch according to claim 1, characterized in that: The sweat sensor (15), the central processing module (13) and the wireless transmission module (14) are integrally cast with the gel layer (12).
6. The non-invasive blood glucose monitoring patch according to claim 1, characterized in that: The air permeable channels (111) are distributed in a circular shape with equal intervals, and the number of the air permeable channels (111) is 5-10.