Surface-mounted wireless monitoring equipment

Abstract

The invention relates to the technical field of medical monitoring equipment, and particularly discloses patch type wireless monitoring equipment. A patch type wireless monitoring device comprises an adhesion substrate, an optical assembly used for reflective photoplethysmography and a wireless electronic module, the adhesion substrate comprises a circumferential adhesion fixing ring and an optical bin located in the center, and the circumferential adhesion fixing ring is provided with a medical pressure-sensitive adhesive adhesion layer. A glue-free window structure is arranged in a corresponding area of the optical bin; the optical bin is connected with the circumferential adhesion fixing ring through an annular elastic buffer connecting part, so that shear displacement generated by the circumferential adhesion fixing ring relative to the skin is absorbed by elastic deformation of the annular elastic buffer connecting part; the equipment shades and stabilizes a light path through a non-glue window and a labyrinth, absorbs and shears through an annular elastic buffer connecting part to reduce motion artifacts, enhances attachment, resists upwarp and discharges sweat and water by combining a wedge-shaped outer edge and a segmented notch with a micro air channel, and is convenient to replace and ensures alignment by matching with a guide slide-in lock catch and fool-proof positioning.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical monitoring equipment, in particular to a patch type wireless monitoring equipment. BACKGROUND

[0002] The monitoring of vital signs such as blood oxygen saturation and heart rate is usually achieved by using a finger clip probe in cooperation with a monitor, which is usually connected by a long wire and is easily affected by pulling during nursing and patient activities. For patients with burns, postoperative dressings, or fingers / toes that cannot be clamped, finger clip probes are difficult to fix or cannot be used.

[0003] To improve applicability, patch type monitoring devices have appeared, which can be attached to any skin surface and communicate with the monitoring end through Bluetooth. However, the existing patches are prone to warping and falling off under conditions of sweating, curved surfaces, and limb movement, and changes in shear displacement, light leakage, or contact pressure can easily cause signal fluctuations, affecting continuous monitoring effects. SUMMARY

[0004] The purpose of the present application is to solve the problems existing in the prior art and provide a patch type wireless monitoring equipment.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme: A patch type wireless monitoring equipment, comprising an adhesive base, an optical assembly for reflective photoplethysmography, and a wireless electronic module, The adhesive base comprises a circumferential adhesive fixing ring and an optical chamber at the center, the circumferential adhesive fixing ring is provided with a medical pressure-sensitive adhesive layer, and the optical chamber is provided with a glue-free window structure in the corresponding area; The optical chamber is connected with the circumferential adhesive fixing ring through an annular elastic buffer connecting part, so that the shear displacement generated by the circumferential adhesive fixing ring relative to the skin is absorbed by the elastic deformation of the annular elastic buffer connecting part; The wireless electronic module is arranged in a detachable electronic cabin, the detachable electronic cabin is detachably connected with the optical chamber through a guide sliding type lock structure, and a foolproof positioning structure for optical assembly alignment is arranged between the detachable electronic cabin and the optical chamber, the foolproof positioning structure comprises a positioning key and a positioning hole.

[0006] Preferably, the side of the optical chamber facing the skin is provided with a light shielding skirt; The optical chamber further comprises an elastic compression ring arranged inside the light shielding skirt and a hard limiting structure matched with the elastic compression ring, so as to limit the maximum compression amount of the elastic compression ring in the direction of the skin.

[0007] Preferably, the annular elastic buffer connecting part is a corrugated ring structure, and is provided with continuous corrugated wrinkles in the circumferential direction.

[0008] Preferably, the light-shielding skirt comprises at least two coaxially arranged light-shielding lips, and a labyrinth light-shielding channel is formed between the two light-shielding lips. The light-shielding skirt and the elastic compression ring are integrally formed by an elastic body containing light-shielding filler, are coaxially arranged, and the light-shielding skirt is arranged on the outer circumferential side of the elastic compression ring.

[0009] Preferably, the hard limiting structure is an annular limiting step arranged on the optical chamber, and the annular limiting step abuts against the elastic compression ring to limit the maximum compression amount of the elastic compression ring.

[0010] In the present application, the "inner side reference surface of the elastic compression ring" refers to a theoretical reference plane formed by the end surface on the skin side of the elastic compression ring in the natural state when the assembly is completed and is not compressed by external force; the height of the light-transmitting flexible boss is compared with the reference plane as a comparison reference.

[0011] Preferably, the optical chamber is provided with a light-transmitting flexible boss, and the height of the light-transmitting flexible boss is 0.2-1.5 mm higher than the inner side reference surface of the elastic compression ring.

[0012] Preferably, the outer edge of the circumferential adhesive fixing ring has a wedge-shaped transition structure with an outer thin inner thick structure. The outer edge of the circumferential adhesive fixing ring is provided with 6-20 segmented compliant notches arranged at intervals in the circumferential direction to adapt to curved surface fitting and reduce lifting.

[0013] Preferably, the adhesive base is provided with a radial micro air duct in the circumferential adhesive fixing ring area, and the micro air duct is guided from inside to outside to the air permeable gap at the outer edge of the circumferential adhesive fixing ring to discharge sweat or water; wherein the air permeable gap is formed by the segmented compliant notches arranged at intervals in the circumferential direction of the outer edge.

[0014] Preferably, the guide sliding type lock structure is a dovetail guide rail structure, and comprises a spring buckle release mechanism.

[0015] The present application has the following beneficial effects: 1. The patch type wireless monitoring device avoids the adhesion of the medical pressure sensitive adhesive layer into the optical detection path and keeps the light transmission interface clean through the glue-free window structure, and the labyrinth light-shielding channel of the light-shielding skirt inhibits the entry of ambient light from the lateral gap into the detection area, cooperates with the flexible compression of the elastic compression ring and the light-transmitting flexible boss to form a stable light transmission contact interface, reduces the reflection loss caused by light leakage interference, baseline drift and air gap, so that the reflection type photoelectric plethysmography signal amplitude and morphology are more stable and have higher repeatability.

[0016] 2、The patch type wireless monitoring device provided by the application, the optical bin is connected with the circumferential adhesion fixing ring through the annular elastic buffer connecting part, so that the circumferential adhesion fixing ring is deformed elastically to absorb the shear displacement of the skin, reduce the transmission of shear force to the optical bin, and reduce the micro displacement and pressure fluctuation of the detection area, thereby reducing the motion artifacts caused by the actions such as arm lifting, wrist turning and fist clenching; at the same time, the hard limiting structure limits the maximum compression amount of the elastic compression ring, avoids overpressure caused by sleep compression, clothes extrusion or accidental pressing, and realizes stable contact and comfortable wearing.

[0017] 3、The patch type wireless monitoring device provided by the application, the outer thin and inner thick wedge-shaped transition structure at the outer edge of the circumferential adhesion fixing ring enhances the curved surface compliance and reduces the risk of lifting, edge curling and edge peeling, and the radial micro air duct guides the sweat or water to the outer edge ventilation gap (formed by the segmented compliant cutout) to reduce the adhesion caused by moisture; at the same time, the detachable electronic cabin is quickly and stably connected with the optical bin through the guide sliding type lock structure, and the foolproof positioning structure composed of the positioning key and the positioning hole ensures that the aligned optical assembly is assembled in place, thereby balancing the connection reliability, quick replacement and assembly consistency in long-term wearing. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a perspective view of the patch type wireless monitoring device provided by the application; Figure 2 It is a disassembly of the patch type wireless monitoring device provided by the application Figure 1 ; Figure 3 It is a disassembly of the patch type wireless monitoring device provided by the application Figure 2 ; Figure 4 It is a perspective view of the electronic cabin provided by the application; Figure 5 It is a bottom view of the patch type wireless monitoring device provided by the application.

[0019] In the figure: 1, adhesion base; 11, fixing ring; 12, optical bin; 2, annular elastic buffer connecting part; 9, electronic cabin; 91, guide sliding type lock structure; 92, foolproof positioning structure; 3, light shielding skirt; 4, elastic compression ring; 41, hard limiting structure; 31, light shielding lip; 5, light transmission flexible boss; 6, wedge-shaped transition structure; 7, radial micro air duct; 93, elastic buckle release mechanism. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments.

[0021] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] Reference Figure 1 , Figure 2 A patch-type wireless monitoring device is designed for continuous monitoring by attaching to the surface of human skin. It includes an adhesive substrate 1, optical components for reflective photoplethysmography (PPG), and a wireless electronic module. The adhesive substrate 1 includes a circumferential adhesive ring 11 and a centrally located optical chamber 12. The circumferential adhesive ring 11 forms a ring-shaped structure for attachment and fixation, with a medical pressure-sensitive adhesive layer on the skin-facing side. The area of ​​the optical chamber 12 corresponding to the skin has an adhesive-free window structure, ensuring that the area corresponding to optical detection is not covered by the medical pressure-sensitive adhesive layer. Through this design, during actual wear, the medical pressure-sensitive adhesive layer provides stable adhesion and resists peeling forces caused by clothing friction, sweating, and daily movements, making the device less prone to detachment. Simultaneously, the adhesive-free window structure prevents the medical pressure-sensitive adhesive layer from entering the optical detection path or contaminating the light-transmitting interface, reducing light obstruction and reflection interference, thereby improving the stability and consistency of the reflective PPG signal.

[0023] Reference Figure 1 , Figure 2 The optical chamber 12 is connected to the circumferential adhesive fixing ring 11 via an annular elastic buffer connection 2. The annular elastic buffer connection 2 is located between the outer periphery of the optical chamber 12 and the inner periphery of the circumferential adhesive fixing ring 11, so that the shear displacement generated by the circumferential adhesive fixing ring 11 relative to the skin is absorbed by the elastic deformation of the annular elastic buffer connection 2. Preferably, the annular elastic buffer connection 2 is a corrugated ring structure, and has continuous corrugated folds along the circumferential direction. Through the above-mentioned connection, in actual use, when the wearer performs actions such as raising their arm, turning their wrist, clenching their fist, or twisting their body, causing the skin to stretch and undergo relative shear displacement, the shear displacement generated by the circumferential adhesive fixing ring 11 as it adheres to the skin is preferentially absorbed by the elastic release force of the annular elastic buffer connection 2. This reduces the degree to which the shear force is directly transmitted to the optical chamber 12, reduces the small displacement of the optical chamber 12 relative to the skin and the fluctuation of contact pressure, thereby reducing motion artifacts and increasing the effective signal ratio. Among these features, the continuous corrugated folds provide a larger compressible and stretchable deformation stroke, making it easier for the adhesive substrate 1 to adapt to curvature changes when it is attached to curved surfaces, further reducing local edge lifting and detection area disturbance caused by insufficient adhesion to curved surfaces.

[0024] ReferenceFigure 1 、 Figure 2 The wireless electronic module is arranged in the detachable electronic cabin 9, the detachable electronic cabin 9 is located on the side of the optical bin 12 away from the skin, and is detachably connected with the optical bin 12 through the guide sliding lock structure 91. Preferably, the guide sliding lock structure 91 is a dovetail guide rail structure, and includes a snap release mechanism 93. Through the above structure arrangement, the detachable electronic cabin 9 is guided to slide in a predetermined direction and is locked in place when assembled, the dovetail guide rail structure provides lateral limiting during sliding to enhance the stability of the connection, and the snap release mechanism 93 is used to release the lock and realize quick sliding out when disassembly is needed. In actual use, the above-mentioned guide sliding lock structure 91 makes the assembly path clear and the in-place relationship clear, which can reduce the probability of assembly deviation and assembly out of place, and reduce the risk of connection loosening caused by external force collision or clothing pulling during wearing; when maintenance or replacement is needed, quick disassembly can be realized through the snap release mechanism 93, reducing repeated tearing of the adhesive base 1, thereby reducing the interference to the skin and the adhesive interface and improving the convenience of repeated assembly and disassembly.

[0025] To ensure the alignment of the optical assembly and avoid incorrect assembly, a foolproof positioning structure 92 for optical assembly alignment is arranged between the detachable electronic cabin 9 and the optical bin 12, the foolproof positioning structure 92 includes positioning keys and positioning holes, which form a unique matching relationship during assembly to limit incorrect direction or incorrect position assembly. Through the above arrangement, in actual use, after the detachable electronic cabin 9 is assembled in place, the wireless electronic module and the optical assembly can be kept accurately aligned relative to the glue-free window structure, reducing signal attenuation, baseline drift and fluctuation caused by eccentricity or misalignment, reducing the probability of incorrect assembly and rework, and improving the success rate of monitoring start and data consistency.

[0026] Referring to Figure 2 and Figure 3 The optical bin 12 is provided with a light shielding skirt 3 on the side facing the skin, the light shielding skirt 3 is arranged circumferentially around the glue-free window structure and forms a light shielding barrier close to the skin after being attached, so as to block the ambient light from entering the optical detection area from the lateral gap. Further preferably, the light shielding skirt 3 includes at least two circumferentially coaxial light shielding lips 31, and a return type labyrinth light shielding channel is formed between the two light shielding lips 31. Through the above arrangement, in actual use, the interference of stray light introduced by indoor strong light, outdoor sunlight or screen light source can be significantly suppressed, and the return type labyrinth light shielding channel makes the light leakage path attenuate multiple times, thereby reducing the drift and noise of the reflective photoelectric plethysmography signal, and improving the signal stability and repeatability.

[0027] Referring to Figure 3, the optical bin 12 further comprises a flexible compression ring 4 arranged inside the light-shielding skirt 3 and a hard limiting structure 41 matched with the flexible compression ring 4 to limit the maximum compression amount of the flexible compression ring 4 towards the skin. Preferably, the hard limiting structure 41 is an annular limiting step arranged on the optical bin 12, which abuts against the flexible compression ring 4 to limit the maximum compression amount of the flexible compression ring 4. Through the above arrangement, in actual wearing, the flexible compression ring 4 provides flexible fitting and moderate compression to stabilize the contact state of the detection area and reduce signal jump caused by small gaps; the annular limiting step forms a rigid stop to limit the maximum compression amount of the flexible compression ring 4 in the case of sleep compression, clothing extrusion or accidental pressing, thereby reducing the risk of pain, numbness or pressure marks and making the optical assembly in a more consistent contact working state, so as to balance the comfort and monitoring stability.

[0028] With reference to Figure 3 , the light-shielding skirt 3 and the flexible compression ring 4 are integrally formed by an elastomer containing light-shielding filler, coaxially arranged, and the light-shielding skirt 3 is arranged on the outer circumferential side of the flexible compression ring 4. Through integral forming, the splicing interface and gap are reduced, thereby reducing the probability of forming light leakage channels and liquid infiltration channels; the outer circumferential light-shielding skirt 3 preferentially blocks ambient light and forms an outer ring fitting, and the inner flexible compression ring 4 further stabilizes the contact pressure and fitting state, thereby simultaneously improving the anti-interference ability and wearing comfort in actual use.

[0029] With reference to Figure 3 , the optical bin 12 is provided with a light-transmitting flexible boss 5 located in the detection window area and protruding towards the skin, and the light-transmitting flexible boss 5 is 0.2-1.5 mm higher than the inner reference surface of the flexible compression ring 4. Through the above arrangement, after actual attachment, the light-transmitting flexible boss 5 preferentially forms a stable light-transmitting contact interface with the skin, which can reduce the reflection loss and scattering fluctuation caused by small air gaps in the detection area, make the reflection type photoplethysmography signal amplitude and morphology more stable, and improve the signal availability.

[0030] With reference to Figure 4 , the outer edge of the circumferential adhesive fixing ring 11 has a wedge-shaped transition structure 6 with thin outside and thick inside; the outer edge of the circumferential adhesive fixing ring 11 is arranged with 6-20 segmented compliant notches at intervals in the circumferential direction; through the above arrangement, the wedge-shaped transition structure 6 with thin outside and thick inside reduces the thickness and rigidity of the outer edge and reduces the warping moment, and the inner side maintains a certain thickness to maintain structural support and connection stability; the segmented compliant notches enable the outer edge to release the circumferential stress in segmented manner at curved surface parts and conform to bending. In actual use, when the device is attached to parts with large curvature variation such as wrist and upper arm, it is more conformable and the edge is less likely to be warped or rolled, thereby prolonging the effective wearing time and reducing the risk of monitoring interruption caused by edge peeling.

[0031] With reference to Figure 5, the adhesive base 1 is provided with radial micro air channels 7 in the circumferential adhesive fixing ring 11 area, which are directed to the outer edge air gap (formed by segmented compliant cutouts) to discharge sweat or water. Through the above setting, in actual use, sweat, condensed water or external moisture can be guided along the radial micro air channels 7 from the inside to the outside to the outer edge air gap (formed by segmented compliant cutouts) to discharge, reduce the decrease of adhesion caused by the retention of water vapor at the interface between the medical pressure-sensitive adhesive layer and the skin and the discomfort of skin immersion, and reduce the probability of edge lifting under humid conditions, thereby improving the reliability of long-term continuous monitoring.

[0032] Working principle: The device is attached to the surface of the human skin, and the circumferential adhesive fixing ring 11 provides the main attachment and fixing force to the skin side of the medical pressure-sensitive adhesive layer, and resists the peeling force caused by clothing friction, sweating and daily activities, so that the whole patch remains stable and is not easy to fall off. The optical bin 12 sets up a glue-free window structure corresponding to the skin area, so that the optical detection corresponding area is not covered by the medical pressure-sensitive adhesive layer, thereby avoiding the glue layer entering the optical detection path or contaminating the light transmission interface, ensuring that the optical components for reflective photoplethysmography and the skin form a clean and stable light transmission detection interface. At the same time, the optical bin 12 is connected with the circumferential adhesive fixing ring 11 through the annular elastic buffer connecting part 2. When the wearer's action causes the skin to stretch or relative shear displacement, the circumferential adhesive fixing ring 11 generates shear displacement with the skin attachment, which is absorbed by the elastic deformation of the annular elastic buffer connecting part 2, thereby reducing the shear force transmission to the optical bin 12 and reducing the detection area micro-displacement and contact pressure fluctuation, thereby reducing the motion artifact and improving the effective signal ratio. The wireless electronic module is arranged in the detachable electronic cabin 9, and the detachable electronic cabin 9 is detachably connected with the optical bin 12 through the guiding sliding type lock structure 91. In the assembly process, the positioning key and the positioning hole of the fool-proof positioning structure 92 form a unique matching relationship to ensure that the optical components are accurately aligned relative to the glue-free window structure after the detachable electronic cabin 9 is in place, thereby reducing the signal attenuation and baseline drift caused by eccentricity or misalignment and improving the success rate of assembly and replacement. In order to suppress environmental light interference and stabilize skin contact, the optical bin 12 is provided with a light shielding skirt 3 on the side facing the skin. The light shielding skirt 3 surrounds the glue-free window structure in the circumferential direction and is close to the skin to form a light shielding enclosure. Preferably, at least two light shielding lips 31 are formed to form a labyrinth light shielding channel to weaken the stray light entering the detection area. The inner side of the light shielding skirt 3 is provided with an elastic pressure ring 4 to provide flexible compression and stable contact. The hard limiting structure 41 limits the maximum compression amount of the elastic pressure ring 4 towards the skin to avoid overpressure. At the same time, the light transmission flexible boss 5 is 0.2-1.5mm higher than the inner side reference surface of the elastic pressure ring 4 and preferentially forms a stable light transmission contact interface with the skin to reduce the reflection loss and scattering fluctuation caused by air gap, thereby making the reflective photoplethysmography signal amplitude and morphology more stable. In addition, the outer thin inner thick wedge-shaped transition structure 6 at the outer edge of the circumferential adhesive fixing ring 11 and the 6-20 segmented compliant notches arranged in the circumferential direction improve the curved surface fitting compliance and reduce the risk of lifting. The radial micro-air duct 7 arranged in the circumferential adhesive fixing ring 11 area of the adhesive base 1 guides the sweat or water to the outer edge of the air gap (formed by the segmented compliant notches) to discharge to reduce the decrease of adhesion caused by water vapor retention and skin immersion discomfort. Finally, the wireless electronic module processes the reflective photoplethysmography signal collected by the optical components and transmits it wirelessly, achieving stable attachment, anti-light leakage interference, anti-motion artifact and convenient disassembly and maintenance in complex scenes such as daily activities and sweating.

[0033] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A patch-type wireless monitoring device, comprising an adhesive substrate (1), an optical component for reflective photoplethysmography, and a wireless electronic module, characterized in that: The adhesive substrate (1) includes a circumferential adhesive fixing ring (11) and an optical chamber (12) located in the center. The circumferential adhesive fixing ring (11) is provided with a medical pressure-sensitive adhesive layer, and the optical chamber (12) is provided with an adhesive-free window structure in the corresponding area. The optical chamber (12) is connected to the circumferential adhesive fixing ring (11) through the annular elastic buffer connection (2) so that the shear displacement generated by the circumferential adhesive fixing ring (11) relative to the skin is absorbed by the elastic deformation of the annular elastic buffer connection (2). The wireless electronic module is housed in a detachable electronic compartment (9), which is detachably connected to the optical compartment (12) via a guide sliding locking structure (91). A foolproof positioning structure (92) for aligning optical components is provided between the detachable electronic compartment (9) and the optical compartment (12). The foolproof positioning structure (92) includes a positioning key and a positioning hole.

2. The patch-type wireless monitoring device according to claim 1, characterized in that: The optical chamber (12) is provided with a light-blocking skirt (3) on the side facing the skin; The optical chamber (12) also includes an elastic pressure ring (4) disposed inside the light-shielding skirt (3) and a hard limiting structure (41) that cooperates with the elastic pressure ring (4) to limit the maximum compression of the elastic pressure ring (4) toward the skin.

3. The patch-type wireless monitoring device according to claim 1, characterized in that: The annular elastic buffer connection (2) is a corrugated ring structure and has continuous corrugated folds along the circumference.

4. The patch-type wireless monitoring device according to claim 1, characterized in that: The light-blocking skirt (3) includes at least two light-blocking lips (31) arranged coaxially in the circumferential direction, and a folded maze light-blocking channel is formed between the two light-blocking lips (31); The light-shielding skirt (3) and the elastic pressure ring (4) are integrally formed from an elastomer containing light-shielding filler, and are coaxially arranged. The light-shielding skirt (3) is located on the outer periphery of the elastic pressure ring (4).

5. A patch-type wireless monitoring device according to claim 1, characterized in that: The hard limiting structure (41) is an annular limiting step set on the optical chamber (12), and the annular limiting step abuts against the elastic pressure ring (4) to limit the maximum compression of the elastic pressure ring (4).

6. A patch-type wireless monitoring device according to claim 1, characterized in that: The optical chamber (12) is provided with a light-transmitting flexible boss (5), which is 0.2 to 1.5 mm higher than the inner reference surface of the elastic pressure ring (4).

7. A patch-type wireless monitoring device according to claim 1, characterized in that: The outer edge of the circumferential adhesion fixing ring (11) has a wedge-shaped transition structure (6) that is thin on the outside and thick on the inside. The outer edge of the circumferential adhesion fixing ring (11) is provided with 6 to 20 segmented conforming cuts at intervals along the circumferential direction to adapt to curved surface adhesion and reduce lifting.

8. A patch-type wireless monitoring device according to claim 7, characterized in that: The adhesive substrate (1) provides radial micro-air channels (7) in the area of ​​the circumferential adhesive fixing ring (11). The radial micro-air channels (7) extend from the inside out and are guided to the air-permeable gap at the outer edge of the circumferential adhesive fixing ring (11) to expel sweat or water. The air-permeable gap is formed by segmented conformal cuts spaced circumferentially along the outer edge.

9. A patch-type wireless monitoring device according to claim 8, characterized in that: The guide slide-in locking structure (91) is a dovetail guide rail structure and includes a spring release mechanism (93).

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