Replaceable sensor assembly smart ring based on tubular structure

Abstract

The smart ring 100 can include an open arc-shaped tubular housing 102 formed from a metal material and defining an interior space / cavity, a sensor assembly 104, a printed circuit board (PCB) inserted into the interior space / cavity through an opening of the open arc-shaped tubular housing 102, a lens 106 positioned above the PCB to cover at least a portion of the PCB within the open arc-shaped tubular housing 102, and a bottom cover 108 that can be manufactured, for example, by CNC machining, and can be connected to the opening of the open arc-shaped tubular housing 102 to enclose the PCB and the lens 106, thereby forming a body of the smart ring 100.

Description

Technical Field

[0001] This invention relates to the field of smart wearable devices, which integrate electronic components for functions such as health monitoring, activity tracking, and communication. More specifically, this invention relates to a smart ring employing a tubular structure design. Background Technology

[0002] The subject matter described in the Background section should not be considered prior art simply because it is mentioned therein. Similarly, issues mentioned in or related to the subject matter of the Background section should not be considered as already known in the prior art. The main content of the Background section represents only different solutions, which themselves may correspond to implementations of the claimed technology.

[0003] In recent years, wearable electronic devices have garnered significant attention for their convenient functions, including health monitoring, activity tracking, notification alerts, and communication with other connected devices. Smart rings, as compact and discreet wearable devices, are particularly popular; their small size allows for comfortable wear on the finger while housing various sensors and electronic components. However, designing a smart ring that is both small and robust, protecting the internal electronic components while maintaining ease of assembly and maintenance, may present technical challenges.

[0004] Traditional smart rings use a solid or molded plastic shell to completely enclose the internal electronic components. While a solid shell provides basic protection, it often limits the overall strength of the ring and makes it difficult to manage the heat generated by the internal electronics. This solid shell also complicates the assembly process, as internal electronic components such as printed circuit boards (PCBs) and sensors must be inserted and sealed within the ring body, sometimes requiring adhesives or soldering. This insertion method increases manufacturing time and cost, and makes it difficult to disassemble the ring for subsequent repairs or replacement of internal components, thus shortening the product's lifespan. Therefore, there is an urgent need for a smart ring structure that provides superior strength and durability while maintaining lightweight, easy maintenance, and comfortable wear. Summary of the Invention

[0005] This invention aims to describe aspects related to a smart ring based on a tubular structure and with replaceable sensor components, which will be further elaborated in the detailed description below. This invention is not intended to identify essential features of the claimed subject matter, nor is it intended to define or limit the scope of the claimed subject matter.

[0006] In one embodiment of this disclosure, a smart ring is disclosed. The smart ring includes an open arcuate tubular housing configured to form a portion of the body of the smart ring (100). The smart ring also includes a sensor assembly on a printed circuit board (PCB) configured to be inserted into an opening in the open arcuate tubular housing. The smart ring also includes a lens located above the sensor assembly, configured to form at least a portion of the inner circumference of the smart ring; and a bottom cover configured to connect to and cover the outer circumference of the open arcuate tubular housing to form the body of the smart ring, and configured to enclose the sensor assembly and the lens within the open arcuate tubular housing.

[0007] In one aspect of this disclosure, the lens comprises at least one transparent or translucent material, and the lens is configured to enable light transmission with the sensor assembly.

[0008] In one aspect of this disclosure, the sensor assembly includes one or more sensors selected from biometric sensors, temperature sensors, photoplethysmography (PPG) sensors, motion sensors, approximation sensors, bioimpedance sensors, capacitive sensors, vibration motors, heart rate sensors, blood oxygen (SpO2) sensors, electrical activity of skin (EDA) sensors, ambient light sensors, skin conductance response (GSR) sensors, ultraviolet (UV) sensors, and electrocardiogram (ECG) sensors, said one or more sensors being assembled on said printed circuit board (PCB) or on a separate module attached to said printed circuit board (PCB).

[0009] In one aspect of this disclosure, the PCB further includes a communication module configured to communicate wirelessly with an external device.

[0010] In one aspect of this disclosure, the open-type arcuate tubular housing defines an internal space / cavity, the dimensions of which are designed to securely assemble the PCB in any orientation and to securely position the PCB during use to prevent movement or vibration.

[0011] In one aspect of this disclosure, the bottom cover is removable to facilitate access to the PCB, battery, sensor assembly, and lens during repair, replacement, or maintenance.

[0012] In one aspect of this disclosure, the open-ended arcuate tubular housing and the bottom cover are designed to form a continuous outer surface when assembled.

[0013] In one aspect of this disclosure, the PCB is flexible.

[0014] In one embodiment of this disclosure, a method of manufacturing a smart ring includes: forming a metal tube into an open arcuate tubular housing to define an open internal space / cavity with an opening sized to accommodate internal components. The method further includes: manufacturing a printed circuit board (PCB) having a sensor assembly, the PCB being sized to be mounted within the open arcuate tubular housing such that the PCB is completely enclosed within the cavity formed by the arcuate tube, or partially enclosed within a cavity extending from or through the cavity and from one end of the arcuate tube to the other. The method further includes: manufacturing a lens sized to cover at least a portion of the PCB when the lens is placed in a gap formed by the opening end of the open arcuate tubular housing. The method further includes: manufacturing a bottom cover configured to fit into the opening of the open arcuate tubular housing. The method further includes: inserting the PCB into the opening of the open arcuate tubular housing. The method further includes: placing the lens above the sensor assembly within the gap of the open arcuate tubular housing. The method further includes fixing the bottom cover to the opening of the open arc-shaped tubular shell to seal the PCB and the lens, thereby forming the outer diameter of the main body of the smart ring.

[0015] In one aspect of this disclosure, the lens comprises at least one transparent or translucent material, and the lens is configured to enable light transmission with the sensor assembly.

[0016] In one aspect of this disclosure, the sensor assembly includes one or more sensors selected from biometric sensors, temperature sensors, photoplethysmography (PPG) sensors, motion sensors, approximation sensors, bioimpedance sensors, capacitive sensors, vibration motors, heart rate sensors, blood oxygen (SpO2) sensors, electrical activity of skin (EDA) sensors, ambient light sensors, skin conductance response (GSR) sensors, ultraviolet (UV) sensors, and electrocardiogram (ECG) sensors, said one or more sensors being assembled on said printed circuit board (PCB) or on a separate module attached to said printed circuit board (PCB).

[0017] In one aspect of this disclosure, the PCB further includes a communication module configured to communicate wirelessly with an external device.

[0018] In one aspect of this disclosure, the open-type arcuate tubular housing defines an internal space / cavity, the dimensions of which are designed to securely position the PCB board during use to prevent movement or vibration.

[0019] In one aspect of this disclosure, the bottom cover is removable to facilitate access to the PCB, battery, sensor assembly, and lens during repair, replacement, or maintenance.

[0020] In one aspect of this disclosure, the dimensions of the open-ended arcuate housing and the bottom cover are designed to form a continuous outer surface after assembly.

[0021] In one aspect of this disclosure, the internal space formed by assembling the open arcuate tubular housing, the lens, and the bottom cover is completely or partially filled with epoxy resin or a similar encapsulation material to enhance the level of protection.

[0022] Other aspects and advantages of the invention will become apparent from the following description taken in conjunction with the accompanying drawings, which illustrate the principles of the invention by way of example. Attached Figure Description

[0023] The accompanying drawings form part of this specification and are used to provide a further understanding of the invention. These drawings illustrate embodiments of the invention and serve to explain the principles of the invention. The embodiments shown in the drawings are merely illustrative and not intended to limit the invention, wherein the same reference numerals denote similar elements. It should be noted that the terms "a" or "an" embodiment mentioned in this invention do not necessarily refer to the same embodiment, but rather mean at least one. In the drawings: Figure 1 An exploded view of a smart ring based on a tubular structure design according to an embodiment of the present invention is shown; Figure 2 An assembly view of a smart ring according to an embodiment of the present invention is shown; Figure 3 A three-dimensional exploded view of a smart ring with a sealing gasket according to another embodiment of the present invention is shown; Figure 4 An exploded three-dimensional view of a smart ring with contact pads according to another embodiment of the present invention is shown; Figure 5 An exploded three-dimensional view of a smart ring according to another embodiment of the present invention is shown; Figure 6 An exploded 3D view of a smart ring according to another embodiment of the present invention is shown; and Figure 7 A method for manufacturing a smart ring according to an embodiment of the present invention is shown.

[0024] The invention and its embodiments can be more fully understood by referring to the following description and accompanying drawings. Detailed Implementation

[0025] Exemplary embodiments will now be described with reference to the accompanying drawings. However, this disclosure may be embodied in many different forms and should not be construed as limited to the embodiments described herein; these embodiments are provided to make this disclosure thorough and complete, and to fully convey its scope of protection to those skilled in the art. The terminology used in the detailed description of the specific exemplary embodiments shown in the drawings is not intended to be limiting. In the drawings, the same reference numerals denote the same elements.

[0026] It should be noted that the reference numerals used in this document are only illustrative of typical embodiments of the subject matter and should not be construed as limiting its scope, as the subject matter may include other equally effective embodiments.

[0027] The detailed description includes specific details to provide a full understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without these specific details.

[0028] This invention addresses the structural and integration challenges associated with compact wearable electronic devices by providing a smart ring structure capable of housing modern electronic components. As smart wearable devices continue to protect more functionality in smaller volumes, there is a pressing need for configurations that allow for precise installation of sensitive components such as circuit boards, lenses, and connectors within confined spaces, while also facilitating replacement and maintenance. The smart ring can be manufactured using conventional machining, forming, and assembly processes, and is suitable for producing compact metal casings, precision-fitting cover plates, and component positioning structures.

[0029] The smart ring can comprise four components: an open, curved tubular housing, a printed circuit board (PCB), a lens, and a base. These components together form a compact, modular, and robust wearable device suitable for continuous wear on a user's finger.

[0030] Figure 1 and Figure 2 Exploded and assembled views of a smart ring 100 employing a tubular structure design according to an embodiment of the present invention are shown. The smart ring 100 may include an open-ended, arcuate tubular housing 102, which may be made of at least one metal, preferably a biocompatible material, including but not limited to commercially pure titanium (e.g., Grade 1) and titanium alloys. Titanium provides the smart ring 100 with a high strength-to-weight ratio, corrosion resistance, and suitability for prolonged skin contact—ideal properties for wearable electronic devices. In one embodiment, the open-ended, arcuate tubular housing 102 may be U-shaped.

[0031] In one embodiment, the open-circuit tubular housing 102 can be made of a non-metallic material, such as a high-strength polymer, composite material, or ceramic. For example, the housing can be made of an engineered polymer, such as polyetheretherketone (PEEK) or polycarbonate, to achieve a balance between lightweight construction, durability, and user comfort. In another embodiment, the housing can be made of a fiber-reinforced composite material, providing additional rigidity while maintaining a low profile. In some embodiments, a ceramic material can be selected, which not only possesses scratch resistance and a superior surface finish but also biocompatibility, making it suitable for prolonged skin contact.

[0032] The open-ended, arc-shaped tubular housing 102 can be a hollow structure, defining an internal space / cavity extending along its length. The dimensions of this internal space / cavity are designed to securely accommodate and position a printed circuit board (PCB) within the body of the smart ring 100. In one embodiment, the PCB can be flexible.

[0033] The PCB includes a sensor assembly 104. Sensor assembly 104 includes one or more sensors selected from biometric sensors, temperature sensors, photoplethysmography (PPG) sensors, motion sensors, approximation sensors, bioimpedance sensors, capacitive sensors, vibration motors, heart rate sensors, blood oxygen (SpO2) sensors, electrical activity of the skin (EDA) sensors, ambient light sensors, skin conductance response (GSR) sensors, ultraviolet (UV) sensors, and electrocardiogram (ECG) sensors. One or more sensors are assembled on the printed circuit board (PCB) or on a separate module attached to the printed circuit board (PCB). Furthermore, the PCB may include a communication module configured to establish a wireless connection with external devices such as smartphones, tablets, or computers. Figure 1 As shown, the sensor assembly 104 is configured to be inserted through an opening in the open arcuate tubular housing 102. The PCB is sized to slide into or press into the internal space / cavity so that it fits snugly and remains stable during normal use.

[0034] The lens 106 is located above the sensor assembly 104 and is configured to cover at least a portion of the printed circuit board (PCB) and form at least a portion of the inner circumference of the smart ring 100 once assembled inside the open arcuate tubular housing 102. The lens 106 may be made of transparent or translucent materials, including but not limited to polycarbonate and tempered glass, providing a protective barrier while allowing optical components on the PCB (such as LEDs, photodiodes, or display indicators) to interact with the external environment. The lens 106 may be sized to snap into the opening of the open arcuate tubular housing 104, resulting in a smooth outer surface after assembly.

[0035] After the sensor assembly 104 and lens 106 are located within the open arcuate tubular housing 102, the opening of the open arcuate tubular housing 102 is closed by a bottom cover 108. Figure 1 As shown, the bottom cover 108 is configured to be securely connected to the open, arc-shaped tubular housing 102, thereby encapsulating the internal components to complete the body of the smart ring. The bottom cover 108 may be made of high-grade materials, including but not limited to Grade 5 titanium alloy.

[0036] The bottom cover 108 can be precision-machined using computer numerical control (CNC) technology to achieve stringent tolerance requirements and precisely fit with the open, curved tubular outer shell 102. In other embodiments, the bottom cover 108 can be formed using additive manufacturing methods, such as metal 3D printing, direct metal laser sintering (DMLS), selective laser melting (SLM), or binder jetting technology. These methods can integrate complex internal features or lightweight grid structures into the bottom cover design. In some embodiments, the bottom cover 108 can be produced using a combination of subtractive and additive manufacturing, for example, obtaining a near-net-shape blank through 3D printing, followed by CNC machining to achieve the final tolerances and surface quality. In other embodiments, the bottom cover 108 can be manufactured using precision casting, metal injection molding (MIM), or hybrid molding processes, depending on the production scale and required material properties.

[0037] The bottom cover 108 can be connected to the open arc-shaped tubular housing 102 via a snap-fit ​​design, mechanical snap-fit, or other suitable interlocking structure. This structure ensures a secure and reliable connection while still allowing for disassembly when necessary. The modular connection between the bottom cover and the open arc-shaped tubular housing 102 allows users or technicians to easily access the PCB and lens 106 for maintenance, upgrades, or replacement without damaging the overall structure of the smart ring 100.

[0038] like Figure 2 In the assembly view shown, the smart ring 100 is in a fully enclosed state, with the bottom cover 108 fitting snugly against the open, curved tubular housing 102, completely enclosing the sensor assembly 104 and the lens 106. The dimensions and shape of the outer surface of the bottom cover 108 can be designed to seamlessly connect with the outer surface of the open, curved tubular housing 102 to form a smooth, continuous outer contour, thereby enhancing wearer comfort while protecting the internal electronic components from dust, moisture, or accidental impacts.

[0039] Now submitting documents Figure 3The image shows an exploded three-dimensional view of the smart ring 100. One or more silicon (Si) gaskets 110 may be disposed circumferentially between the inner surface of the open arcuate tubular housing 102 and the sensor assembly 104. The silicon gasket 110 serves both a mechanical cushioning function—absorbing vibrations and reducing stress on electronic components—and an environmental sealant—blocking the intrusion of moisture, dust, and particulate contaminants. In some embodiments, the silicon gasket 110 may also be integrated around specific sub-assemblies such as a battery or sensor cavity to achieve localized sealing. The internal space formed by assembling the open arcuate tubular housing 102, lens 106, and bottom cover 108 may be wholly or partially filled with epoxy resin or a similar encapsulation material to enhance the level of protection.

[0040] See Figure 4 The contact pad 112 is disposed on the bottom surface of the sensor assembly 104 and is exposed through a designated hole or recess in the bottom cover 108. The contact pad 112 can perform multiple functions, including but not limited to providing electrical connectivity for charging, firmware flashing, diagnostic testing, or data transfer. In one embodiment, the contact pad 112 can be configured to connect to a spring-loaded connector or a magnetic charging dock.

[0041] To ensure reliable operation, the contact pad 112 may be surrounded by a local sealing pad structure or an overmolded insulating barrier to electrically isolate it from adjacent components and prevent liquid ingress.

[0042] Figure 5 and Figure 6 An exploded 3D view of the smart ring 100 excluding the PCB is shown.

[0043] Figure 7 A flowchart of a method 700 for manufacturing a smart ring (such as smart ring 100) according to an embodiment of the present invention is shown. Here, each block may represent a module, segment, or portion containing code, including one or more code units with executable instructions for implementing a specified logical function. It should be noted that in some alternatives, the functions marked in the blocks may differ in order from those marked in the figures.

[0044] For example, Figure 7 The two boxes shown sequentially in the flowchart can actually be executed substantially simultaneously, or sometimes these boxes may be executed in reverse order depending on the functions involved. Any process description or box in the flowchart should be understood as representing a module, segment, or portion of code containing one or more executable instructions for implementing a specific logical function or step in the process. Alternative implementations are included within the scope of this exemplary embodiment, wherein functions may be executed in a manner different from the order shown or discussed, including substantially parallel or reverse execution depending on the functions involved. Furthermore, process descriptions or boxes in the flowchart should be understood as representing decisions made by hardware structures such as state machines.

[0045] The order in which methods are described should not be interpreted as a limitation; any number of method description boxes can be combined in any order to implement the method. Furthermore, individual boxes may be removed from a method without departing from the scope of the subject matter described herein.

[0046] Furthermore, this method can be implemented using any suitable hardware, software, firmware, or a combination thereof. Additionally, the above method can be implemented using suitable hardware, computer-readable instructions, or a combination thereof. The steps of this method can be executed by a system that follows machine-executable instructions stored on a non-transitory computer-readable medium; or by dedicated hardware circuitry, a microcontroller, or logic circuitry. Method 700 may include the following steps: Step 702: The metal tube is formed into an open arc-shaped tubular shell to define an open internal space / cavity with an opening, the size of which is designed to accommodate internal components.

[0047] Step 704: Fabricate a printed circuit board (PCB) with sensor components, the PCB being sized to fit within the open arcuate tubular housing such that the PCB is completely enclosed within the cavity formed by the arcuate tube, or partially enclosed within a cavity extending from or through the cavity and from one end of the arcuate tube to the other.

[0048] Step 706: Manufacture a lens, the lens being sized to cover at least a portion of the PCB when placed within the gap formed by the opening of the open, curved tubular housing. The lens may be made of transparent or translucent materials, including but not limited to polycarbonate and tempered glass, serving as a protective barrier while ensuring the proper functioning of optical components on the PCB.

[0049] Step 708: Manufacture a bottom cover, which is configured to fit and close the opening of the open arcuate tubular housing.

[0050] Step 710: Insert the PCB into the opening of the open arc-shaped tubular shell.

[0051] Step 712: Place the lens above the sensor assembly within the gap of the open arcuate tubular housing.

[0052] Step 714: Fix the bottom cover to the opening of the open arc-shaped tubular shell to seal the PCB and the lens, and form a complete smart ring body.

[0053] Technological advantages and economic significance The smart ring based on a tubular structure with replaceable sensor components disclosed in this invention has the following advantages compared with the prior art: - The open-arched tubular shell design allows for precise internal PCB positioning while maintaining structural integrity, and features a compact, wearable form factor.

[0054] Modular assembly configuration simplifies the insertion, encapsulation, and disassembly of internal components, avoiding damage to the outer casing.

[0055] - The use of titanium alloy materials combines a high strength-to-weight ratio with biocompatibility for long-term skin contact.

[0056] - CNC machining of the bottom cover enables high-precision fitting and repeatable locking with the tubular outer shell, reducing assembly errors.

[0057] - The open channel structure avoids a fully enclosed shell design, simplifies internal operation and thermal management, and improves manufacturability.

[0058] - Compared to a one-piece ring casing, the modular structure and material efficiency significantly reduce waste and rework costs during the production process.

[0059] - The compact, layered design allows for the integration of advanced sensors and communication modules within a minimal physical space.

[0060] The specification mentions "one", "another", "a certain" or "several" embodiments in many places.

[0061] This does not necessarily mean that every such reference points to the same embodiment, nor does it mean that the feature applies only to a single embodiment. Individual features from different embodiments can also be combined to form other embodiments.

[0062] The terms “or” and “and / or” as used herein should be interpreted as inclusive or to mean any single or arbitrary combination. Therefore, “A, B, or C” or “A, B, and / or C” means “any of the following: A; B; C; A and B; A and C; B and C; A, B, and C”. Exceptions to this definition are limited to combinations of elements, functions, steps, or behaviors that are inherently mutually exclusive to some extent.

[0063] Unless otherwise expressly stated, the singular forms used in this specification include the plural forms. Further understanding is that the terms "comprising," "including," "including but not limited to," and / or "included in" as used in this specification expressly specify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and combinations thereof. When an element is described as being "connected" or "coupled" to another element, it can be understood as a direct connection or coupling, and there may be intermediate elements. Furthermore, "connected" or "coupled" in this specification also includes functional connections or couplings. The term "and / or" as used herein includes any combination and arrangement of the listed items.

[0064] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the meaning generally understood by those skilled in the art. Further, terms such as those defined in common dictionaries shall be interpreted as having meaning consistent with their meaning in the relevant technical field context, and shall not be interpreted in an idealized or overly formalized manner unless expressly stated herein.

[0065] Although specific embodiments of a tubular-based smart ring with replaceable sensor assemblies have been described using language specific to structural features and / or methods, it should be understood that the appended claims are not necessarily limited to the specific features or methods described. Rather, these specific features and methods are disclosed only as embodiments of a tubular-based smart ring with replaceable sensor assemblies.

[0066] The present invention has been described with reference to the various embodiments and specific examples described above. Based on the detailed description above, those skilled in the art can derive many variations. All such obvious variations are included within the full scope of protection of the appended claims.

Claims

1. A smart ring (100), comprising: An open-type arcuate tubular shell (102) is configured to form part of the main body of the smart ring (100); The sensor assembly (104), disposed on a printed circuit board, is configured to be inserted into the opening of the open arcuate tubular housing (102); The lens (106), located above the sensor assembly (104), is configured to form at least a portion of the inner circumference of the smart ring (100); and The bottom cover (108) is configured to connect to and cover the outer perimeter of the open arcuate tubular housing (102) to form the body of the smart ring (100), and is configured to enclose the sensor assembly (104) and the lens (106) within the open arcuate tubular housing (102).

2. The smart ring (100) as described in claim 1, characterized in that, The lens (106) comprises at least one transparent or translucent material and is configured to enable light transmission with the sensor assembly (104).

3. The smart ring (100) as described in claim 1, characterized in that, The sensor assembly (104) includes one or more sensors selected from biometric sensors, temperature sensors, photoplethysmography sensors, motion sensors, approximation sensors, bioimpedance sensors, capacitance sensors, vibration motors, heart rate sensors, blood oxygen sensors, skin conductance sensors, ambient light sensors, skin conductance response sensors, ultraviolet sensors, and electrocardiogram sensors, wherein the one or more sensors are assembled on the printed circuit board or on a separate module attached to the printed circuit board.

4. The smart ring (100) as described in claim 1, characterized in that, The PCB also includes a communication module configured to communicate wirelessly with external devices.

5. The smart ring (100) of claim 1, wherein the open arcuate tubular housing (102) defines an internal space / cavity, the dimensions of which are designed to securely assemble the printed circuit board in any orientation and to securely position the printed circuit board during use to prevent movement or vibration.

6. The smart ring (100) as described in claim 1, characterized in that, The bottom cover (108) is removable to facilitate access to the printed circuit board, battery, sensor assembly (104) and lens (106) during repair, replacement or maintenance.

7. The smart ring (100) as described in claim 1, characterized in that, The open-ended arcuate tubular shell (102) and the bottom cover (108) are designed to form a continuous outer surface when assembled.

8. The smart ring (100) as described in claim 1, characterized in that, The printed circuit board is flexible.

9. A method (700) for manufacturing a smart ring, comprising: The metal tube is formed into an open, arc-shaped tubular shell to define an open internal space / cavity with openings sized to accommodate internal components. A printed circuit board with sensor components is manufactured, the printed circuit board being sized to fit within the open arcuate tubular housing such that the printed circuit board is completely enclosed within the cavity formed by the arcuate tube, or partially enclosed within a cavity extending from or through the cavity and from one end of the arcuate tube to the other. A lens is manufactured such that it covers at least a portion of the printed circuit board when placed in the gap formed by the open end of the open arcuate tubular housing. Manufacture a bottom cover, the bottom cover being configured to fit an opening of the open arcuate tubular housing; The printed circuit board is inserted into the opening of the open arc-shaped tubular housing; The lens is placed above the sensor assembly within the gap of the open arc-shaped tubular housing; The bottom cover is fixed to the opening of the open arc-shaped tubular shell to seal the printed circuit board and the lens, thereby forming the outer perimeter of the main body of the smart ring.

10. The method (700) as described in claim 9, characterized in that, The lens comprises at least one transparent or translucent material and is configured to enable light transmission with the sensor assembly.

11. The method (700) as described in claim 9, characterized in that, The sensor assembly includes one or more sensors selected from biometric sensors, temperature sensors, photoplethysmography sensors, motion sensors, approximation sensors, bioimpedance sensors, capacitive sensors, vibration motors, heart rate sensors, blood oxygen sensors, skin conductance sensors, ambient light sensors, skin conductance response sensors, ultraviolet sensors, and electrocardiogram sensors, wherein the one or more sensors are assembled on the printed circuit board or on a separate module attached to the printed circuit board.

12. The method (700) as described in claim 9, characterized in that, The printed circuit board also includes a communication module configured to communicate wirelessly with external devices.

13. The method (700) as described in claim 9, characterized in that, The open, arc-shaped tubular housing defines an internal space / cavity, the dimensions of which are designed to securely position the printed circuit board to prevent movement or vibration during use.

14. The method (700) as described in claim 9, characterized in that, The bottom cover is removable to facilitate access to the printed circuit board, battery, sensor assembly, and lens during repair, replacement, or maintenance.

15. The method (700) as described in claim 9, characterized in that, The dimensions of the open-ended arcuate shell and the bottom cover are designed to form a continuous outer surface after assembly.

16. The method (700) as claimed in claim 9, characterized in that, The internal space formed by assembling the open arc-shaped tubular shell (102), the lens (106), and the bottom cover (108) is completely or partially filled with epoxy resin or a similar encapsulation material to improve the protection level.

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