A muscle oxygen collection device, a muscle oxygen sensor and a preparation method thereof

Abstract

The application relates to the technical field of medical equipment, and discloses a muscle oxygen collection device, a muscle oxygen sensor and a preparation method thereof. The muscle oxygen sensor comprises a main body layer, a photoelectric probe and a fabric top pad. The main body layer comprises a fabric bottom pad and a metal circuit. The fabric bottom pad has a first surface and a second surface. A flexible base material is embedded in the fabric aperture of the second surface. The metal circuit is formed on the second surface. The photoelectric probe is arranged on the fabric bottom pad and is electrically connected with the metal circuit. The fabric top pad is arranged on the second surface of the fabric bottom pad and wraps the metal circuit. The muscle oxygen sensor has good soft deformation capacity as a whole, can adaptively adjust the shape according to muscle movement, and always maintains the fitting state with the human skin. The problems of poor fitting degree, easy displacement and strong foreign body sensation of wearing of the traditional hard structure sensor are solved. The stability of muscle oxygen detection and the wearing comfort can be effectively improved, and the use requirement of long-time dynamic monitoring in the movement process can be met.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a muscle oxygen acquisition device, a muscle oxygen sensor and a method for preparing the same. Background Technology

[0002] Muscle oxygenation monitoring is based on near-infrared spectroscopy technology. It utilizes the difference in absorption of near-infrared light (wavelength 700-1000 nm) by oxyhemoglobin and deoxyhemoglobin in muscle tissue. By emitting near-infrared light of multiple wavelengths (common wavelengths: 735 nm, 805 nm, 850 nm, etc.), it detects the light intensity attenuation after penetrating the tissue, calculates muscle oxygen saturation and total hemoglobin concentration, and reflects the muscle oxygen metabolism status in real time. It is mainly used for exercise assessment and rehabilitation assessment.

[0003] Existing wearable muscle oxygen sensors mostly use rigid circuit boards to integrate circuits and components. The rigid structure has poor adhesion to human muscle tissue and is prone to displacement during exercise. This not only reduces the stability of the detection signal but also causes discomfort to the user. Summary of the Invention

[0004] This application discloses a muscle oxygen sensor that can adaptively adjust to muscle deformation, greatly improving its fit to human skin and reducing the probability of displacement during exercise. This not only improves the stability of the detection signal but also reduces the feeling of foreign objects when wearing it, thus enhancing the comfort of use.

[0005] To achieve the above objectives, this application discloses a muscle oxygen sensor, comprising: a main body layer, the main body layer including a fabric base pad and metal circuitry, the fabric base pad having a first surface and a second surface, a flexible substrate embedded in the fabric pores of the second surface, and the metal circuitry formed on the second surface; A photoelectric probe is disposed on the fabric base and electrically connected to the metal circuit. The photoelectric probe is capable of emitting and receiving detection signals for detecting muscle oxygen. A fabric top pad is disposed on the second surface of the fabric bottom pad and wraps around the metal circuit.

[0006] In this way, the first surface of the fabric base adheres to the surface of the human skin, and the photoelectric probe, together with the metal circuitry, can complete the acquisition of muscle oxygen signals. The fabric top pad is placed on the second surface and wraps around the metal circuitry, which can protect the metal circuitry from external friction, moisture, and other factors that may affect its lifespan and detection stability. At the same time, the fabric top pad also maintains the softness of the overall structure, without adding any foreign body sensation when worn. When human muscles deform during exercise, the entire muscle oxygen sensor can adaptively adjust its shape according to the deformation of the muscles, relying on the softness of the fabric base and top pads, as well as the flexible structure of the flexible substrate and metal circuitry, to always maintain a close fit to the human skin. This significantly reduces the probability of sensor displacement during exercise, avoiding signal fluctuations caused by displacement or insufficient fit, improving the stability and accuracy of muscle oxygen detection, and eliminating the foreign body discomfort caused by rigid structures, thus enhancing the comfort of wearing and using the device.

[0007] As an optional implementation, there are multiple main body layers, each of which is stacked along the direction from the first surface to the second surface, and an insulating film is disposed between two adjacent main body layers.

[0008] In this way, the overlapping arrangement of multiple main body layers allows for the integration of more conductive lines with different functions without significantly increasing the lateral size of the sensor, meeting the needs of simultaneous detection of multiple parameters and realizing the integrated design of the sensor. The insulating film placed between adjacent main body layers provides insulation and isolation for the metal lines of different main body layers, preventing signal interference between different lines and ensuring the stability of signal transmission for each line. The insulating film can be a TPU film.

[0009] As an optional implementation, the conductive lines formed by the various metal lines are staggered along the direction from the first surface to the second surface.

[0010] In this way, staggered wiring can avoid the increase in local thickness caused by overlapping wiring in the same location, and can keep the overall thickness of the sensor uniform. This can avoid the foreign body sensation caused by uneven thickness, and will not reduce the fit due to local protrusions, thus further improving wearing comfort and detection stability.

[0011] As an optional implementation, the plurality of main body layers include: A first body layer, the first surface of the first body layer being for contact with skin, and the metal circuitry of the first body layer forming a muscle oxygenation monitoring circuit; The second main body layer has a pressure detection circuit formed by the metal lines of the second main body layer.

[0012] Thus, with the first main layer positioned close to the skin, the integrated muscle oxygen monitoring circuit can be closer to the detection location, shortening the signal transmission distance, reducing signal loss, and improving the stability of the muscle oxygen detection signal. The second main layer integrates a pressure detection circuit, which can simultaneously detect wearing pressure, facilitating adjustments to the tightness of the garment based on pressure parameters, further optimizing fit and wearing comfort. This also avoids increasing the lateral size of the sensor, enabling miniaturization and integration of the sensor design. Furthermore, since the metal circuitry in this embodiment is formed on the fabric backing, it possesses excellent flexibility. Even if the pressure detection circuit is not in close contact with the skin, it can effectively transmit pressure changes through the deformation of the fabric backing, ensuring accurate pressure detection and providing a reliable reference for adjusting the wearing condition. In addition, the muscle oxygen sensor in this embodiment not only places the muscle oxygen monitoring circuit on the fabric backing pad, which can fit snugly against the skin to ensure the transmission and reception of light signals by the photoelectric sensor and avoid external light interference, but also obtains wearing pressure parameters through the pressure detection circuit at the same time. This allows users to adjust the tightness of the fit according to their actual needs, avoiding both excessive pressure affecting local blood circulation and insufficient pressure causing sensor displacement, thereby further improving the wearing experience and detection stability.

[0013] As an optional implementation, the linewidth 'a' of each of the metal lines satisfies: 0.1mm ≤ a ≤ 0.35mm.

[0014] Therefore, if the line width is less than 0.1mm, it will significantly increase the processing difficulty, hinder production cost control, and increase the risk of line breakage. If the line width is greater than 0.35mm, it will increase the amount of material used in producing the metal circuit, increase the overall space occupied by the circuit, reduce the flexibility of the main body layer, and affect the overall deformation capability of the sensor. Controlling the line width within the above range can ensure that the metal circuit has appropriate resistance, guaranteeing the stability of signal transmission, while also controlling the space occupied by the circuit, maintaining the good flexibility and deformation capability of the main body layer, and avoiding excessive local thickness increase during layered wiring, thus balancing the needs of integrated design and wearing comfort.

[0015] As an optional implementation, the outer periphery of the main body layer is covered with a waterproof coating.

[0016] In this way, the waterproof coating can prevent sweat from penetrating the sensor, avoiding problems such as corrosion and short circuits in the metal circuitry caused by sweat. This effectively improves the stability of the muscle oxygen sensor, extends its service life, and also facilitates cleaning and disinfection of the sensor after use, enhancing the user experience. Specifically, after embedding the flexible substrate into the fabric backing, the main body layer is immersed in the hydrophobic coating, allowing the waterproof coating to completely cover the main body layer.

[0017] As an optional implementation, the muscle oxygen sensor further includes a hot-press adhesive layer disposed on the surface of the fabric top pad facing the fabric bottom pad, for bonding the fabric top pad and the fabric bottom pad together.

[0018] In this way, the fabric top pad and fabric bottom pad are connected and fixed by hot-pressing the adhesive layer. The connection method is simple and reliable, and can meet the connection requirements of the flexible fabric structure. No additional rigid connectors are required, and the overall softness of the sensor is not damaged. At the same time, the hot-pressing adhesive layer can also fill the tiny gaps between the fabric top pad and fabric bottom pad, further improving the overall structure and enhancing the protection of metal circuits.

[0019] As an optional implementation, the muscle oxygen sensor further includes: a host interface disposed on the fabric top pad; The fabric top pad is provided with a groove, which corresponds to the host interface, and the host interface is electrically connected to each of the metal lines.

[0020] Thus, the host interface is used to transmit the muscle oxygen detection signal and pressure detection signal collected by the metal circuit to the external detection host for signal processing and analysis. The slot provides clearance for the installation and placement of the interface, making it easy for the host plug to be aligned and connected with the host interface. At the same time, it can also ensure the flatness of the structure after connection, and will not have any extra protrusions that affect the wearing experience.

[0021] This application also discloses a muscle oxygen acquisition device, including: a host and the aforementioned muscle oxygen sensor, wherein the muscle oxygen sensor is electrically connected to the host.

[0022] In this way, the muscle oxygen collection device can be electrically connected to the muscle oxygen sensor through the host interface. The muscle oxygen sensor can adaptively adjust its shape according to the deformation of the muscles during human movement, making it less prone to displacement and falling off. The detection signal is stable and accurate, and the wearing experience is minimal, which can improve the user experience for patients.

[0023] This application also discloses a method for fabricating a muscle oxygen sensor, the method comprising: printing metal lines on a flexible substrate; The flexible substrate is embedded in the fabric gaps of the fabric base pad through a hot pressing process, so that the metal circuit is transferred to the fabric base pad.

[0024] In this way, metal circuits are pre-printed on a flexible substrate, eliminating the need for direct printing on a pre-formed flexible fabric surface. Printing metal circuits on a flat flexible substrate provides sufficient support during printing, resulting in higher printing accuracy and ensuring that the formed dimensions of the metal circuits meet design requirements, effectively improving processing yield. Furthermore, it avoids the influence of the fabric's texture and deformation characteristics on printing accuracy, reducing processing difficulty and improving the forming precision of the metal circuits, thus effectively increasing product yield and reducing manufacturing costs. After the transfer printing is completed, a photoelectric probe is installed at the corresponding position on the fabric base pad, electrically connecting the photoelectric probe to the metal circuit. Then, a hot-press adhesive layer is applied to the second surface of the fabric base pad, and the fabric top pad is placed over the second surface. Hot pressing cures the adhesive layer, bonding the fabric top pad and fabric base pad together to complete the metal circuit encapsulation. Finally, corresponding slots are machined to install the host interface, completing the fabrication of the muscle oxygen sensor. The overall process is simple and suitable for mass production.

[0025] Compared with the prior art, the beneficial effects of this application are: The muscle oxygen sensor provided in this application embodiment uses a fabric base layer combined with a flexible substrate embedded in the fabric pores to support metal circuitry. The overall structure has both good flexibility and structural stability, and can adaptively adjust its shape according to muscle deformation, always maintaining a close fit with human skin. This significantly reduces the probability of sensor displacement during exercise, avoiding signal fluctuations caused by displacement or insufficient fit, effectively improving the stability and accuracy of muscle oxygen detection. It also eliminates the discomfort caused by foreign objects in traditional rigid circuit board structures, improving the comfort of wearing and using the sensor. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the muscle oxygen sensor disclosed in the embodiments of this application; Figure 2 This is an exploded view of the muscle oxygen sensor disclosed in the embodiments of this application; Figure 3 This is a schematic diagram of the muscle oxygen sensor from another angle, as disclosed in an embodiment of this application. Figure 4 This is a schematic diagram of the muscle oxygen sensor from another angle, as disclosed in an embodiment of this application. Figure 5 This is a schematic diagram of the structure of a muscle oxygen sensor from another angle, as disclosed in an embodiment of this application. Figure 6 This is a schematic flowchart of the method for preparing the muscle oxygen sensor disclosed in the embodiments of this application.

[0028] Explanation of reference numerals in the attached figures: 100-Main body layer; 11-Fabric base pad; 111-First surface; 112-Second surface; 113-Flexible substrate; 114-Probe window; 115-Main interface; 12-Metal circuit; 200-Photoelectric probe; 300-Fabric top pad; 31-Slot; 400-Hook and loop fastener side; 500-Hook and loop fastener side. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will now be clearly and completely described with reference to the accompanying drawings. The described embodiments are only a part of this application, and not all of them. Other embodiments that can be obtained by those skilled in the art without creative effort based on the content of this application are all within the protection scope of this application.

[0030] The directional or positional terms used in this application, such as "upper," "lower," "inner," and "outer," are based on the directions shown in the accompanying drawings and are used only for descriptive purposes, not to limit the actual location or structure. Some terms may have other meanings in different contexts, and those skilled in the art should understand them according to the specific context.

[0031] The terms "installation," "setup," and "connection" should be interpreted broadly, including but not limited to fixed or detachable, mechanical or electrical, direct or indirect connection methods. The terms "first," "second," etc., are used only to distinguish objects and do not indicate importance or order.

[0032] Muscle oxygenation monitoring is based on near-infrared spectroscopy technology. It utilizes the difference in absorption of near-infrared light (wavelength 700-1000 nm) by oxyhemoglobin and deoxyhemoglobin in muscle tissue. By emitting multi-wavelength near-infrared light (common wavelengths: 735 nm, 805 nm, 850 nm, etc.), it detects the light intensity attenuation after penetrating the tissue, calculates muscle oxygen saturation and total hemoglobin concentration, and reflects the real-time state of muscle oxygen metabolism. It is mainly used for exercise assessment and rehabilitation assessment. Existing wearable muscle oxygenation sensors mostly use rigid circuit boards to integrate circuits and components. The rigid structure has poor adhesion to human muscle tissue and is prone to displacement during exercise, which not only reduces the stability of the detection signal but also causes discomfort to the user.

[0033] Based on this, this application discloses a muscle oxygen sensor, including a main structure made of a flexible fabric substrate. The main structure has good flexibility and deformation capability, and can adaptively adjust its shape according to muscle movement, always maintaining a close fit with human skin. This solves the problems of poor fit, easy displacement, and strong foreign body sensation of traditional rigid structure sensors, and can effectively improve the stability and wearing comfort of muscle oxygen detection, meeting the needs of long-term dynamic monitoring during exercise.

[0034] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0035] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of the muscle oxygen sensor disclosed in an embodiment of this application. This application discloses a muscle oxygen sensor, including: a main body layer 100, a photodetector 200, and a fabric top pad 300. The main body layer 100 includes a fabric bottom pad 11 and a metal circuit 12. The fabric bottom pad 11 has a first surface 111 and a second surface 112. A flexible substrate 113 is embedded in the fabric pores of the second surface 112. The metal circuit 12 is formed on the second surface 112. The photodetector 200 is disposed on the fabric bottom pad 11 and electrically connected to the metal circuit 12. The photodetector 200 is capable of emitting and receiving detection signals for detecting muscle oxygen. The fabric top pad 300 is disposed on the second surface 112 of the fabric bottom pad 11 and wraps around the metal circuit 12.

[0036] Combination Figure 2 , Figure 2 This is an exploded view of the muscle oxygen sensor disclosed in an embodiment of this application. In some embodiments, the muscle oxygen sensor may include a main body layer 100, which integrates conductive circuitry required for muscle oxygen detection. The main body layer 100 may include a fabric base 11 and metal circuitry 12. The fabric base 11 is made of fabric, which has good softness and deformability, and can undergo synchronous bending and stretching deformation with muscle deformation, unlike rigid circuit boards which limit the overall deformation capability of the sensor. At the same time, a flexible substrate 113 is embedded in the fabric pores of the second surface 112 of the fabric base 11. The flexible substrate 113 can fill the pores, providing a stable support for the metal circuitry 12 and ensuring the stability of the metal circuitry 12 layout, without significantly sacrificing the overall softness. Moreover, the combination of the fabric and the flexible substrate 113 can also ensure the strength of the overall structure and avoid the problem of the metal circuitry 12 breaking or falling off after long-term deformation.

[0037] Combination Figure 2In some embodiments, the metal lines 12 are directly formed on the second surface 112 where the flexible substrate 113 is embedded, and can be directly used as conductive lines, eliminating the need for an additional rigid circuit board structure and further ensuring the overall flexibility of the sensor. The metal lines 12 are directly formed on the second surface 112 where the flexible substrate 113 is embedded, replacing the rigid wiring structure of the traditional rigid circuit board, and further improving the flexibility of the overall structure.

[0038] In some embodiments, the flexible substrate 113 may be a silicone substrate or a plastic film substrate. Specifically, the silicone substrate may be TPU (Thermoplastic Polyurethane).

[0039] In some embodiments, the metal circuit 12 can be made of silver paste. The circuit after silver paste printing has low resistance and good conductivity. At the same time, it also has a certain degree of flexibility and can deform together with the fabric base pad 11. It is not easy to have the problem of embrittlement and breakage, and its service life is also longer.

[0040] In some embodiments, the metal circuit 12 can be transferred to the fabric base pad 11 by printing silver paste onto a flexible substrate 113 and then embedding the flexible substrate 113 with the metal circuit 12 onto the fabric base pad 11 through a hot pressing process. This preparation method is simple and efficient, eliminating the need for direct printing on the soft fabric surface, reducing processing difficulty, improving the molding accuracy and yield of the metal circuit 12, ensuring the bonding stability between the metal circuit 12 and the fabric base pad 11, and reducing production costs.

[0041] Combination Figure 2 In some embodiments, the fabric top pad 300 is disposed on the second surface 112 of the fabric bottom pad 11 and encloses the metal circuit 12. This serves two purposes: firstly, it isolates and protects the metal circuit 12, preventing it from being directly exposed to friction and moisture corrosion, thus extending its lifespan; secondly, it further integrates the overall structure, improving structural integrity. Simultaneously, the fabric top pad 300 maintains its overall softness, ensuring good adhesion between the sensor and the skin. Furthermore, a Velcro hook surface 400 (e.g., ...) can be provided on the first surface 111 of the fabric bottom pad 11. Figure 3 As shown, Figure 3 (This is a schematic diagram of the structure of a muscle oxygen sensor from another angle disclosed in an embodiment of this application), a Velcro surface 500 is provided on the outer surface of the fabric top pad 300 (e.g., Figure 4 As shown, Figure 4 (This is a schematic diagram of the structure of the muscle oxygen sensor disclosed in another aspect of the embodiments of this application), so that the muscle oxygen sensor can be attached to both ends with Velcro, making it convenient for users to wear and remove.

[0042] Combination Figure 5 , Figure 5 This is a schematic diagram of the structure of a muscle oxygen sensor from another angle disclosed in an embodiment of this application. In actual use, the first surface 111 of the fabric base pad 11 is attached to the surface of human skin, and the photoelectric probe 200, together with the metal circuit 12, can complete the acquisition of muscle oxygen signals. The fabric top pad 300 is disposed on the second surface 112 and wraps around the metal circuit 12, which can protect the metal circuit 12 and prevent the metal circuit 12 from being affected by external friction, moisture and other factors, thus affecting its service life and detection stability. At the same time, the fabric top pad 300 also maintains the softness of the overall structure and will not add any extra foreign body sensation when wearing it. When human muscles deform during movement, the entire muscle oxygen sensor can adapt its shape to the muscle deformation by relying on the soft properties of the fabric base pad 11 and fabric top pad 300, as well as the flexible structure of the flexible substrate 113 and metal circuit 12. It always maintains a close fit with the human skin, which greatly reduces the probability of sensor displacement during exercise. This can avoid fluctuations in detection signals due to displacement or insufficient fit, improve the stability and accuracy of muscle oxygen detection, and eliminate the discomfort caused by rigid structures, thus improving the comfort of wearing and using the sensor.

[0043] According to an embodiment of the present invention, the main body layer 100 adopts a fabric base pad 11 combined with a flexible substrate 113 embedded in the fabric pores to support the metal circuit 12. The overall structure has both good softness and structural stability, and can adaptively adjust its shape according to muscle deformation, always maintaining a close fit with human skin. This greatly reduces the probability of sensor displacement during exercise, which can avoid fluctuations in detection signal due to displacement or insufficient fit, effectively improving the stability and accuracy of muscle oxygen detection. It can also eliminate the foreign body discomfort caused by traditional rigid circuit board structures, improving the comfort of wearing and using the sensor.

[0044] In some embodiments, the number of main body layers 100 is multiple (not shown in the figure), and each main body layer 100 is disposed in an overlapping manner along the direction from the first surface 111 to the second surface 112, and an insulating film is disposed between two adjacent main body layers 100.

[0045] Specifically, the number of main body layers 100 can be one, with various circuits arranged side by side, or the number of main body layers 100 can be set to multiple. Multiple overlapping main body layers 100 can integrate more conductive lines with different functions without significantly increasing the lateral size of the sensor, meeting the needs of multi-parameter synchronous detection and realizing the integrated design of the sensor. An insulating film is placed between adjacent main body layers 100 to insulate and isolate the metal lines 12 of different main body layers 100, preventing signal interference between different lines and ensuring the stability of signal transmission for each line. The insulating film can be a TPU film.

[0046] In some embodiments, the conductive lines formed by the various metal lines 12 are staggered along the direction from the first surface 111 to the second surface 112 (not shown in the figure).

[0047] Specifically, the various metal lines 12 can be interlaced, overlapped, or staggered. Staggered wires can avoid the local increase in thickness caused by overlapping wires in the same location, and can keep the overall thickness of the sensor uniform. This avoids the foreign body sensation caused by uneven thickness and prevents the fit from decreasing due to local protrusions, thereby further improving wearing comfort and detection stability.

[0048] In some embodiments, the plurality of body layers 100 include: a first body layer 100 and a second body layer 100, wherein the first surface 111 of the first body layer 100 is for contact with skin, and the metal lines 12 of the first body layer 100 form a muscle oxygenation monitoring circuit; and the metal lines 12 of the second body layer 100 form a pressure detection circuit.

[0049] Specifically, the first main body layer 100 is positioned close to the skin, allowing the integrated muscle oxygen monitoring circuit to be closer to the detection location, shortening the signal transmission distance, reducing signal loss, and improving the stability of the muscle oxygen detection signal. The second main body layer 100 integrates a pressure detection circuit, which can simultaneously detect wearing pressure, facilitating adjustments to the tightness of the garment based on pressure parameters, further optimizing fit and wearing comfort. This also avoids increasing the lateral size of the sensor, enabling miniaturization and integration of the sensor design. Furthermore, since the metal circuitry 12 in this embodiment is formed on the fabric backing 11, it possesses good flexibility. Even if the pressure detection circuit is not in close contact with the skin, it can effectively transmit pressure changes through the deformation of the fabric backing 11, ensuring accurate pressure detection and providing a reliable reference for adjusting the wearing status. In addition, the muscle oxygen sensor in this embodiment not only places the muscle oxygen monitoring circuit on the fabric base pad 11, which can fit snugly against the skin to ensure the transmission and reception of light signals by the photoelectric sensor and avoid external light interference, but also obtains wearing pressure parameters through the pressure detection circuit at the same time, so that users can adjust the tightness of wearing according to actual needs. This can avoid excessive pressure affecting local blood circulation and also avoid insufficient pressure causing sensor displacement, thereby further improving the wearing experience and detection stability.

[0050] Combination Figure 2 In some embodiments, the line width a of each of the metal lines 12 satisfies: 0.1mm ≤ a ≤ 0.35mm.

[0051] Specifically, if the line width is less than 0.1mm, it will significantly increase the processing difficulty, hinder production cost control, and increase the risk of line breakage. If the line width is greater than 0.35mm, it will increase the material used in producing the metal line 12, increase the overall space occupied by the line, reduce the flexibility of the main body layer 100, and affect the overall deformation capability of the sensor. Controlling the line width within the above range can ensure that the metal line 12 has appropriate resistance, guaranteeing the stability of signal transmission, while also controlling the space occupied by the line, maintaining the good flexibility and deformation capability of the main body layer 100, and avoiding excessive local thickness increase during layered wiring, thus balancing the needs of integrated design and wearing comfort.

[0052] In some embodiments, the outer periphery of the main body layer 100 is covered with a waterproof coating (not shown in the figure).

[0053] Specifically, sweat is often produced during human exercise. The waterproof coating can prevent sweat from penetrating the sensor, avoiding problems such as corrosion and short circuits in the metal circuitry 12 caused by sweat. This effectively improves the stability of the muscle oxygen sensor, extends its service life, and also facilitates cleaning and disinfection of the sensor after use, enhancing the user experience. Specifically, after embedding the flexible substrate 113 into the fabric base pad 11, the main body layer 100 can be completely immersed in the hydrophobic coating, allowing the waterproof coating to cover the main body layer 100.

[0054] In some embodiments, the muscle oxygen sensor further includes a hot-press adhesive layer (not shown in the figure), which is disposed on the surface of the fabric top pad 300 facing the fabric bottom pad 11 for bonding the fabric top pad 300 and the fabric bottom pad 11.

[0055] Specifically, the fabric top pad 300 and the fabric bottom pad 11 can be connected by sewing, welding, fastening, etc. In this embodiment, the fabric top pad 300 and the fabric bottom pad 11 are connected and fixed by hot-pressing adhesive layer. The connection method is simple and reliable, and can meet the connection requirements of the flexible fabric structure. No additional rigid connectors are required, and the overall softness of the sensor will not be damaged. At the same time, the hot-pressing adhesive layer can also fill the tiny gap between the fabric top pad 300 and the fabric bottom pad 11, further improving the overall structure and the protection effect on the metal line 12.

[0056] Combination Figure 2 In some embodiments, the fabric base pad 11 is provided with a probe window 114, which corresponds to the photoelectric probe 200.

[0057] Specifically, the photoelectric probe 200 is positioned at the probe window 114. The probe window 114 provides clearance for the photoelectric probe 200, preventing it from being blocked by the fabric backing pad 11. This ensures that the photoelectric probe 200 can successfully transmit and receive detection light signals, thus ensuring the smooth execution of muscle oxygenation detection.

[0058] Combination Figure 2 In some embodiments, the muscle oxygen sensor further includes: a host interface 115 disposed on the fabric top pad 300; the fabric top pad 300 is provided with a slot 31 corresponding to the host interface 115, and the host interface 115 is electrically connected to each of the metal lines 12.

[0059] Specifically, the host interface 115 is used to transmit the muscle oxygen detection signal and pressure detection signal collected by the metal line 12 to the external detection host for signal processing and analysis. The slot 31 provides clearance for the installation and placement of the interface, making it easy for the host plug to be aligned and connected with the host interface 115. At the same time, it can also ensure the flatness of the structure after connection and will not have any extra protrusions that affect the wearing experience.

[0060] This application also discloses a muscle oxygen acquisition device, including: a host (not shown in the figure) and the aforementioned muscle oxygen sensor, wherein the muscle oxygen sensor is electrically connected to the host.

[0061] Specifically, the muscle oxygen collection device can be electrically connected to the muscle oxygen sensor through the host interface. The muscle oxygen sensor can adaptively adjust its shape according to the deformation of the muscles during human movement, making it less prone to displacement and falling off. The detection signal is stable and accurate, and the wearing experience is minimal, which can improve the user experience for patients.

[0062] Combination Figure 6 , Figure 6 This is a schematic flowchart illustrating the fabrication method of the muscle oxygen sensor disclosed in this application. This application also discloses a fabrication method for a muscle oxygen sensor, the method comprising: printing metal lines 12 on a flexible substrate 113; and embedding the flexible substrate 113 into the fabric gaps of a fabric base pad 11 using a hot-pressing process, so that the metal lines 12 are transferred to the fabric base pad 11.

[0063] Specifically, metal lines 12 are pre-printed on the flexible substrate 113, eliminating the need for direct printing on the already formed soft fabric surface. Printing metal lines 12 on the flat surface of the flexible substrate 113 provides sufficient support during printing, resulting in higher printing accuracy and ensuring that the forming dimensions of the metal lines 12 meet the design requirements, thus effectively improving the processing yield. Moreover, it can avoid the influence of the fabric's texture and deformation characteristics on the printing accuracy, which reduces the processing difficulty and improves the forming accuracy of the metal circuit 12, effectively improving the product yield and reducing the production cost. After the transfer is completed, the photoelectric probe 200 is installed at the corresponding position on the fabric base pad 11, so that the photoelectric probe 200 is electrically connected to the metal circuit 12. Then, a hot-press adhesive layer is laid on the second surface 112 of the fabric base pad 11, and the fabric top pad 300 is covered on the second surface 112. The hot-press adhesive layer is cured by hot pressing, and the fabric top pad 300 and the fabric base pad 11 are bonded together to complete the wrapping of the metal circuit 12. Finally, the corresponding slot 31 is processed to install the host interface 115, and the preparation of the muscle oxygen sensor can be completed. The overall process steps are simple and suitable for mass production.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and do not constitute a limitation. The embodiments can be freely combined without conflict. Although each embodiment has been described in detail, those skilled in the art should understand that modifications can still be made to the technical solutions or equivalent substitutions can be made to the technical features, and all such modifications or substitutions should be covered within the scope of the technical solutions of this application.

Claims

1. A muscle oxygen sensor, characterized in that, include: The main body layer (100) includes a fabric base pad (11) and a metal circuit (12). The fabric base pad (11) has a first surface (111) and a second surface (112). A flexible substrate (113) is embedded in the fabric pores of the second surface (112). The metal circuit (12) is formed on the second surface (112). A photoelectric probe (200) is disposed on the fabric base pad (11) and electrically connected to the metal circuit (12). The photoelectric probe (200) is capable of transmitting and receiving detection signals for detecting muscle oxygen. A fabric top pad (300) is disposed on the second surface (112) of the fabric bottom pad (11) and wraps the metal circuit (12).

2. The muscle oxygen sensor according to claim 1, characterized in that, There are multiple main body layers (100), and each main body layer (100) is arranged to overlap along the direction from the first surface (111) to the second surface (112), and an insulating film is provided between two adjacent main body layers (100).

3. The muscle oxygen sensor according to claim 2, characterized in that, The conductive lines formed by each of the metal lines (12) are staggered along the direction from the first surface (111) to the second surface (112).

4. The muscle oxygen sensor according to claim 2, characterized in that, The plurality of main body layers (100) include: A first body layer (100), the first surface (111) of the first body layer (100) is for contact with skin, and the metal lines (12) of the first body layer (100) form a muscle oxygenation monitoring circuit. The second main body layer (100) has a pressure detection circuit formed on the metal lines (12) of the second main body layer (100).

5. The muscle oxygen sensor according to claim 1, characterized in that, The line width a of each of the metal lines (12) satisfies: 0.1mm≤a≤0.35mm.

6. The muscle oxygen sensor according to claim 1, characterized in that, The outer periphery of the main body layer (100) is covered with a waterproof coating.

7. The muscle oxygen sensor according to claim 1, characterized in that, The muscle oxygen sensor further includes a hot-press adhesive layer disposed on the surface of the fabric top pad (300) facing the fabric bottom pad (11) for bonding and connecting the fabric top pad (300) and the fabric bottom pad (11).

8. The muscle oxygen sensor according to claim 1, characterized in that, The muscle oxygen sensor also includes a host interface (115) disposed on the fabric top pad (300); The fabric top pad (300) is provided with a slot (31), the slot (31) corresponds to the host interface (115), and the host interface (115) is electrically connected to each of the metal lines (12).

9. A muscle oxygen harvesting device, characterized in that, include: The host and the muscle oxygen sensor as described in any one of claims 1-8; The muscle oxygen sensor is electrically connected to the host computer.

10. A method for preparing a muscle oxygen sensor, characterized in that, The preparation method includes: Metal lines (12) are printed on a flexible substrate (113); The flexible substrate (113) is embedded in the fabric gaps of the fabric base pad (11) by hot pressing, so that the metal circuit (12) is transferred to the fabric base pad (11).

Images