Transparent window structure and blood oxygen saturation probe

Abstract

Provided are a transparent window structure (100) and a blood oxygen saturation probe, wherein the transparent window structure (100) is configured for being arranged on a support member (200); the support member (200) is configured for being arranged at a part to be detected. The transparent window structure (100) comprises: a transparent window body (110), the transparent window body (110) having a window body bottom surface (111) facing an accommodation space (210) and a window body top surface (112) away from the accommodation space (210); and a sensor mounting position (120), the sensor mounting position (120) being arranged on the top surface (112) of the transparent window body (110) and being configured for the arrangement of an external sensor element, wherein an upper pressed surface (160) and a lower pressed surface (170) are arranged on the transparent window body (110), and the area of the upper pressed surface (160) is greater than that of the lower pressed surface (170); or / and a fixing portion (130) is arranged on the transparent window body (110).

Description

A transparent window structure and blood oxygen saturation probe

[0001] This application claims priority to a Chinese patent application filed with the Patent Office of China on March 21, 2024, with application number 202410327355.5 and invention name “A Transparent Window Structure and Blood Oxygen Saturation Probe”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present application relates to the technical field of blood oxygen saturation detection equipment, and in particular to a transparent window structure and a blood oxygen saturation probe. Background Art

[0003] A blood oxygen saturation probe (abbreviated as blood oxygen probe) is a sensor used to detect blood oxygen saturation and is widely used in fields such as first aid, disease diagnosis, and health monitoring. Existing blood oxygen probes mainly include a support and a sensor element. The sensor element is arranged inside the support, and the support is used to be mounted, clamped, or attached to the fingers, toes, forehead, or other test areas of the subject. The sensor element includes a light-emitting element (LED) and a photodiode (PD). The light-emitting element emits light of a specific wavelength, generally red light and infrared light, and the photodiode is used to receive the light emitted by the light-emitting element that passes through the subject's finger. The blood oxygen saturation meter can obtain the subject's blood oxygen saturation by analyzing the light signal received by the photodiode. In order to protect the sensor element, prevent moisture, salt, etc. generated by the finger from adversely affecting the sensor element, or prevent other foreign matter from entering, and to allow light emitted from the LED to enter the PD, a light-transmitting window made of a transparent material is also required between the sensor element and the finger.

[0004] For example, the patent application number 201310428452.5 discloses a structure of a blood oxygen sensor. As shown in FIG1 , the blood oxygen sensor includes an inner base (i.e., a support member 200), and a receiving space 210 for accommodating the finger of the subject is formed in the support member 200. The support member 200 is provided with two transparent window structures 100 positioned opposite to each other, respectively referred to as an upper transparent window structure and a lower transparent window structure.

[0005] Specifically, each transparent window structure 100 includes a window bottom surface 111 facing the accommodating space 210, a window top surface 112 away from the accommodating space 210, and a side wall 140; the window top surface 112 is provided with a sensor installation position 120 for installing a sensor element; the window bottom surface 111 includes a first bottom surface 111a and a second bottom surface 111b, the first bottom surface 111a is flush with the inner wall of the accommodating space 210, and the second bottom surface 111b is flush with the inner wall of the accommodating space 210. 0 forms a certain interval, thereby forming a step structure; the window top surface 112 includes a first top surface 112a and a second top surface 112b, the first top surface 112a is the bottom surface of the sensor mounting position 120, and the second top surface 112b is the upper surface of the side wall 140, and the first top surface 112a is lower than the second top surface 112b. Therefore, the sensor mounting position 120 is a recessed structure arranged on the side of the transparent window structure 100 away from the accommodating space 210.

[0006] A light-emitting element and a photosensitive element are respectively disposed within the sensor mounting position 120 of the upper transparent window structure 100 and the lower transparent window structure 100. During blood oxygen testing, in the upper transparent window structure 100 where the light-emitting element is located, light emitted by the light-emitting element disposed within the sensor mounting position 120 sequentially passes through the first top surface 112a and the first bottom surface 111a before reaching the part to be measured contained within the accommodating space 210. In the lower transparent window structure 100 where the photosensitive element is located, light emitted by the light-emitting element passes through the part to be measured, then sequentially passes through the first bottom surface 111a and the first top surface 112a of the lower transparent window structure 100 before being received by the photosensitive element disposed within the sensor mounting position 120 of the lower transparent window structure 100.

[0007] The blood oxygen sensor is made of silicone and is manufactured by injection molding or hot pressing. As shown in FIG2 , a transparent window structure 100 is first manufactured, and the prefabricated transparent window structure 100 is set in a mold 300. High-temperature liquid silicone is injected into the mold 300, and the structure of the blood oxygen sensor is obtained after cooling.

[0008] Specifically, the mold 300 includes an upper mold 310, an intermediate core pulling 320 and a lower mold 330. An upper pressure structure 311 is provided on the inner side of the upper mold 310, and a lower pressure structure 331 is provided on the inner side of the lower mold 330. During molding, the first bottom surfaces 111a of the two transparent window structures 100 are respectively abutted against the upper surface and lower surface of the intermediate core pulling 320, the first top surface 112a of the upper transparent window structure 100 is abutted against the upper pressure structure 311, and the first top surface 112a of the lower transparent window structure 100 is abutted against the lower pressure structure 331. Thus, a filling cavity 340 is formed between the upper mold 310, the intermediate core pulling 320, the lower mold 330 and the two transparent window structures 100. The shape of the filling cavity 340 is the same as the shape of the support member 200. High-temperature liquid silicone is injected into the filling cavity 340, and the structure of the blood oxygen probe can be obtained after the silicone cools.

[0009] Taking the transparent window structure 100 as an example, in order to fix the upper transparent window structure 100 during molding to prevent it from moving, the upper pressure structure 311 applies pressure to the first top surface 112a of the upper transparent window structure 100. The pressure applied by the upper pressure structure 311 is transmitted to the first bottom surface 111a of the upper transparent window structure. The first bottom surface 111a of the upper transparent window structure applies pressure to the middle core pull 320. This is equivalent to the upper pressure structure 311 and the middle core pull 320 clamping the upper transparent window structure 100 to prevent the upper transparent window structure 100 from deflecting. The first top surface 112a of the upper transparent window structure 100 is referred to as the upper pressure surface 160, and the first bottom surface 111a of the upper transparent window structure 100 is referred to as the lower pressure surface 170. The force conditions of the lower transparent window structure 100 are basically the same as those of the upper transparent window structure 100, and will not be repeated here.

[0010] In other prior arts, as shown in Figure 3, the first bottom surface 111a of the transparent window structure 100 is flush with the second bottom surface 111b, so that the first bottom surface 111a and the second bottom surface 111b are merged to form the same surface, that is, the window bottom surface 111 is no longer divided into the first bottom surface 111a and the second bottom surface 111b; therefore, during the molding process, the entire window bottom surface 111 is in contact with the middle core pulling 320, and the lower pressure surface 170 includes the entire window bottom surface 111.

[0011] In other prior arts, as shown in FIG4 , the upper pressure structure 311 and the lower pressure structure 331 abut not only the first top surface 112a but also abut part of the second top surface 112b , so that the upper pressure surface 160 includes the first top surface 112a and part of the second top surface 112b . Technical issues

[0012] However, during the molding process of the aforementioned prior art blood oxygen sensor structures, the high-temperature silicone material injected easily seeps into the bottom of the transparent window (i.e., the first bottom surface 111a or the window bottom surface 111), causing overflowing glue. This creates irregular shapes in the transparent window structure 100, hindering light transmission and resulting in a defective product. Figure 5(a) shows an unqualified product with overflowing glue during molding, while Figure 5(b) shows a qualified product without overflowing glue. A comparison shows that the overflowing glue partially obscures the upper left corner of the light-transmitting window in Figure 5(a).

[0013] Therefore, the existing technology still needs to be improved and developed. Summary of the Invention

[0014] In view of the above-mentioned deficiencies in the prior art, the purpose of this application is to provide a transparent window structure and a blood oxygen saturation probe, which solves the problem in the prior art that the high-temperature silicone material injected easily penetrates into the bottom of the transparent window, causing glue overflow.

[0015] In one aspect, the present application provides a transparent window structure for being arranged on a support member, wherein the support member is arranged at a part to be measured, wherein the transparent window structure comprises:

[0016] A transparent window body, the transparent window body having a window bottom surface facing the part to be measured, a window top surface facing away from the part to be measured, and side walls;

[0017] The top surface of the window body includes a first top surface and a second top surface; the top surface of the window body surrounded by the inner surface of the side wall is divided into the first top surface; the upper surface of the side wall is the second top surface; the height from the first top surface to the second top surface is ≥0;

[0018] A sensor installation position, the sensor installation position is arranged on the top surface of the transparent window body, and is used to set a sensor element;

[0019] The fixing portion is arranged on the transparent window body and is used to cooperate with the mold to fix the side wall during molding to prevent it from moving.

[0020] In a second aspect, the present application provides a transparent window structure for being provided on a support member, wherein the support member is used to connect to a part to be measured, wherein the transparent window structure comprises:

[0021] A transparent window body, the transparent window body having a window bottom surface facing the part to be measured and a window top surface facing away from the part to be measured;

[0022] A sensor installation position, the sensor installation position is arranged on the top surface of the window body and is used to set a sensor element;

[0023] An upper pressure surface is provided on the top surface of the window body. During molding, the upper pressure surface is used to contact with the upper pressure structure of the mold and withstand the pressure applied thereto, or to contact with the lower pressure structure of the mold and withstand the pressure applied thereto;

[0024] A lower pressure surface is provided on the bottom surface of the window body. During molding, the lower pressure surface is used to abut against the middle core of the mold and withstand the pressure applied by the upper pressure structure or the lower pressure structure;

[0025] The area of ​​the upper pressure-bearing surface is greater than or equal to the area of ​​the lower pressure-bearing surface.

[0026] In a third aspect, the present application further proposes a blood oxygen saturation probe, comprising:

[0027] A support member, the support member being used to connect to a part to be measured;

[0028] a sensor element; and,

[0029] The transparent window structure as described above;

[0030] At least one transparent window structure is provided, and at least one transparent window structure is respectively provided on the supporting member, and the sensor element is provided in the transparent window structure.

[0031] Beneficial effects: A transparent window structure and a blood oxygen saturation probe in the present application can be provided with a fixing portion on the transparent window body. During molding, a matching positioning structure is also provided on the upper pressure structure of the molding mold. During the molding process, the positioning structure of the mold cooperates with the fixing portion to fix the transparent window body, thereby preventing the relative displacement between the bottom surface of the window and the middle core pulling caused by the impact of the high-pressure molding material, so as to avoid the relative displacement between the bottom surface of the window and the middle core pulling, which causes the molding material to enter the bottom surface of the window. In addition, the fixing portion also fixes the side wall of the sensor mounting position, which can prevent the molding material from penetrating into the fixing position of the sensor element. Alternatively, / or in combination with the transparent window structure, the upper pressure-bearing surface of the transparent window body is larger than the lower pressure-bearing surface. Thus, during the molding process, when the mold's compression structure applies pressure to the transparent window body, the bottom surface of the window body serves as the lower pressure-bearing surface. The pressure transmitted by the upper pressure-bearing surface causes the bottom surface of the window to be subjected to greater and more evenly distributed pressure, allowing the bottom surface of the transparent window body to fully adhere to the middle core-pulling surface of the mold. This effectively prevents molding material from penetrating the surface of the bottom surface of the window body and forming an irregular obstruction rubber after molding. Furthermore, by reducing the light-transmitting area of ​​the bottom surface of the window body, stray light interference can be reduced, thereby improving the accuracy of blood oxygen detection. Therefore, the above-mentioned solutions can effectively prevent molding material from entering the bottom surface of the window and forming an obstruction rubber. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG1 is a schematic structural diagram of a clamping structure of a blood oxygen saturation probe in the first prior art;

[0033] FIG2 is a cross-sectional view of the transparent window structure of the blood oxygen saturation probe in the first prior art during molding;

[0034] FIG3 is a cross-sectional view of the transparent window structure of the blood oxygen saturation probe in the second prior art during molding;

[0035] FIG4 is a cross-sectional view of the transparent window structure of the blood oxygen saturation probe in the third prior art during molding;

[0036] FIG5 is a diagram showing the actual effect of a transparent window structure in the prior art, wherein FIG5(a) shows a product with glue overflow, and FIG5(b) shows a product without glue overflow;

[0037] FIG6 is a schematic structural diagram of a transparent window structure according to the first embodiment of the present application;

[0038] FIG7 is a cross-sectional view of the transparent window structure of Example 1 of the present application;

[0039] FIG8 is a cross-sectional view of the transparent window structure during molding according to the first embodiment of the present application;

[0040] FIG9 is a schematic structural diagram of a transparent window structure according to a second embodiment of the present application;

[0041] FIG10 is a schematic structural diagram of a transparent window structure according to a third embodiment of the present application;

[0042] FIG11 is a cross-sectional view of a transparent window structure according to a third embodiment of the present application;

[0043] FIG12 is a cross-sectional view of the transparent window structure of Example 3 of the present application during molding;

[0044] FIG13 is a side view of the transparent window structure of the fourth embodiment of the present application;

[0045] FIG14 is a cross-sectional view of a transparent window structure according to a fourth embodiment of the present application;

[0046] FIG15 is a cross-sectional view of the transparent window structure of Example 4 of the present application during molding;

[0047] FIG16 is a schematic structural diagram of a transparent window structure according to a fifth embodiment of the present application;

[0048] FIG17 is a cross-sectional view of the transparent window structure of Example 5 of the present application during molding;

[0049] FIG18 is a schematic structural diagram of a transparent window structure according to a sixth embodiment of the present application;

[0050] FIG19 is a cross-sectional view of a transparent window structure according to a sixth embodiment of the present application;

[0051] FIG20 is a cross-sectional view of the transparent window structure of Example 6 of the present application during molding;

[0052] FIG21 is a cross-sectional view of the transparent window structure of Example 6 of the present application during molding;

[0053] FIG22 is a schematic structural diagram of a transparent window structure according to a seventh embodiment of the present application;

[0054] FIG23 is a cross-sectional view of another structure of the transparent window structure of Example 7 of the present application;

[0055] FIG24 is a cross-sectional view of another structure of the transparent window structure of Example 7 of the present application during molding;

[0056] FIG25 is a front view of the blood oxygen saturation probe according to the eighth embodiment of the present application;

[0057] FIG26 is a cross-sectional view of a blood oxygen saturation probe according to an eighth embodiment of the present application;

[0058] Figure 27 is a cross-sectional view of the blood oxygen saturation probe of Example 9 of the present application.

[0059] In the figure: 100, transparent window structure; 110, transparent window body; 111, window bottom surface; 111a, first bottom surface; 111b, second bottom surface; 112, window top surface; 112a, first top surface; 112b, second top surface; 120, sensor mounting position; 130, fixing portion; 131, bearing column; 132, fixing hole; 133, hole bottom surface; 135, fixing boss; 140, side wall; 141, side wall inner surface; 150, notch; 160, upper pressure surface; 170, lower pressure surface; 2 00. Support member; 210. Accommodating space; 220. First clamping portion; 221. First fixing groove; 230. Second clamping portion; 231. Second fixing groove; 240. Connecting portion; 250. Mounting opening; 260. Wire outlet; 270. Wire channel; 280. Attachment; 300. Mould; 310. Upper mould; 311. Upper pressure structure; 312. Upper positioning structure; 320. Middle core pulling; 330. Lower mould; 331. Lower pressure structure; 332. Lower positioning structure; 340. Filler cavity. DETAILED DESCRIPTION

[0060] To make the purpose, technical solutions and advantages of this application clearer and more explicit, the following further describes this application in detail with reference to the accompanying drawings and examples. It should be understood that the specific examples described herein are only used to explain this application and are not intended to limit this application.

[0061] According to the inventors' analysis and research, in the prior art, during the molding process of the blood oxygen saturation probe, the transparent window structure 100 is not effectively fixed, resulting in the high-temperature silicone material easily seeping into the bottom of the transparent window. The specific reasons are as follows:

[0062] On the one hand, the side wall 140 of the transparent window structure 100 deforms under the impact of the high temperature and high pressure molding material, thereby causing the entire transparent window structure 100 to deform and displace, causing the molding material to penetrate between the first bottom surface 111a and the middle core pull 320.

[0063] As shown in Figures 1 and 2, since the transparent window structure 100 is made of a flexible material and is easily deformed by impact, the inner side of the side wall 140 is only attached to the outer side of the upper positioning structure 311, and there is no stable fixed relationship between the contact surfaces of the two. During molding, when the high-pressure and high-viscosity silicone enters the filler cavity 340, the impact force will be directly applied to the side wall 140 of the transparent window structure 100, which can easily cause the side wall 140 to deform and move, thereby driving the entire transparent window structure 100 to deform and move, causing the molded silicone material to enter the edge of the contact surface between the first bottom surface 111a and the middle core pull 320, causing irregular shaped obstruction to the transparent window structure 100, resulting in unqualified products. Furthermore, to make the inner contour of the support member 200 match the shape of the finger, when its accommodating space 210 is configured as a curved surface that matches the shape of the finger, the first bottom surface 111a is also configured as a corresponding curved surface. This curved surface makes it more difficult for the first bottom surface 111a to fit tightly with the surface of the intermediate core pull 320, which can easily lead to glue overflow from the first bottom surface 111a, resulting in irregular edges. This not only affects the passage of light but also causes the silicone to become loosely bonded to the transparent window, leading to debonding. Furthermore, because the sidewalls 140 of the transparent window structure 100 and the corresponding upper pressure structure 311 cannot fit tightly together, the molding material can easily seep into the sensor mounting position 120 during the molding process, obstructing the sensor mounting position 120.

[0064] On the other hand, since the first bottom surface 111a is larger than the first top surface 112a, the pressure applied by the upper pressure structure 311a to the first top surface 112a is difficult to be effectively transmitted to the edge of the first bottom surface 111a. The edge of the first bottom surface 111a cannot fully fit with the middle core pulling 320, and the molding material can easily penetrate into the edge of the first bottom surface 111a.

[0065] As shown in Figures 1 and 2, the mold 300 specifically includes an upper mold 310, an intermediate core pulling 320 and a lower mold 330. The inner sides of the upper mold 310 and the lower mold 330 are respectively provided with an upper pressure structure 311 and a lower pressure structure 331; in the transparent window structure 100 above, the first bottom surface 111a abuts against the upper surface of the intermediate core pulling 320, and the first top surface 112a abuts against the corresponding upper pressure structure 311, and the upper pressure structure 311 and the intermediate core pulling 320 press the transparent window structure 100. Since the area of ​​the first bottom surface 111a is larger than the area of ​​the first top surface 112a, the pressure applied by the upper pressure structure 311 to the first top surface 112a cannot completely cover and be transmitted to the entire surface of the first bottom surface 111a. The pressure applied to the first bottom surface 111a of the transparent window structure 100 is uneven, the pressure at the center of the first bottom surface 111a is large, and the pressure at the edge is small, resulting in the edge portion of the first bottom surface 111a of the window body and the surface of the middle core pulling 320 not being fully fitted. During the molding process, high-temperature silicone fluid easily enters the edge portion of the first bottom surface 111a, resulting in a glue overflow product as shown in Figure 5(a).

[0066] The above cause analysis is only for the upper transparent window structure 100 . The cause of glue overflow in the lower transparent window structure 100 is the same and will not be repeated here.

[0067] Based on the above reasons, in order to make the transparent window structure 100 more stably fixed during the molding process without deformation and movement, the following structure is proposed:

[0068] This embodiment provides a transparent window structure 100 for being disposed on a support member 200 and for mounting at least one sensor element. The support member 200 is disposed on a portion to be measured. Blood oxygen measurement methods generally employ two detection methods, namely, reflective detection and transmissive detection. Therefore, the support member 200 can adopt two structures: as shown in FIG27 , for example, the support member 200 can directly employ an attachment 280 and be bonded to the portion to be measured (e.g., the forehead) for detection, forming an attached detection structure, which allows for reflective detection; or, as shown in FIG26 , the support member 200 can be enclosed within a receiving space 210, and the portion to be measured (e.g., a finger) is placed within the receiving space 210 for detection, forming a clamping detection structure, which allows for transmissive detection.

[0069] For the convenience of structural description, the present invention mainly describes the structure of the support member 200 enclosing the accommodating space 210. Specifically, the support member 200 is arranged along the front-to-back direction, and the part to be measured (such as a finger) extends from the back to the front into the accommodating space 210. The support member 200 can cover the finger to be measured in the up-down direction, with the finger width direction of the finger placed in the support member 200 as the left-right direction, and the transparent window structure 100 is located above or / and below the finger. The structures in this embodiment are all described with the above directions as reference directions. Moreover, when the transparent window structures 100 are arranged in the up-down direction of the accommodating space 210 of the support member 200, the present invention takes the transparent window structure 100 arranged at the top as an example for detailed structural description, and the transparent window structure 100 at the bottom is symmetrical with the transparent window structure 100 at the top. The specific structure can refer to the transparent window structure 100 at the top.

[0070] As shown in Figures 6 and 7, the transparent window structure 100 in this embodiment includes a transparent window body 110 and a sensor mounting position 120. The transparent window body 110 can be made of transparent silicone, transparent plastic, or other light-transmitting materials. The material can be flexible. If the transparent window body 110 is made of a flexible material, the transparent window body 110 can deform together with the connected support member 200, which can prevent the transparent window body 110 from falling off.

[0071] The transparent window body 110 has a bottom surface 111 facing the area to be measured and a top surface 112 facing away from the area to be measured. The bottom surface 111 and the top surface 112 are arranged in a vertically opposed relationship. A sensor mounting position 120 is disposed on the top surface 112 of the transparent window body 110. The transparent window body 110 includes a sidewall 140, which is located outside the sensor mounting position 120. The top surface 112 includes a first top surface 112a and a second top surface 112b. The portion enclosed by the inner surface 141 of the sidewall 140 is the first top surface 112a; the upper surface of the sidewall 140 is the second top surface 112b. The height from the first top surface 112a to the second top surface 112b is ≥ 0. In a specific structure, the bottom surface of the inner cavity of the sensor mounting position 120 is a first top surface 112a, the side wall 140 has a second top surface 112b, and the height from the first top surface 112a to the second top surface 112b is ≥ 0. As shown in FIG7 , when the height from the first top surface 112a to the second top surface 112b is greater than 0, the sensor mounting position 120 is configured as a mounting groove; as shown in FIG9 , when the height from the first top surface 112a to the second top surface 112b is equal to 0, the first top surface 112a and the second top surface 112b are flush, and the first top surface 112a directly represents a certain area on the entire plane of the window top surface 112. The sensor element can abut against the first top surface 112a, thereby being mounted on the transparent window body 110 by being installed in the sensor mounting position 120. Therefore, when the height is equal to 0, it can be understood that there are no side walls or that the four side surfaces of the transparent window body 110 are equivalent to side walls, which is equivalent to the first top surface 112a and the second top surface 112b being on a flat window top surface 112. The window bottom surface 111 includes a first bottom surface 111a and a second bottom surface 111b; the first bottom surface 111a and the second bottom surface 111b can be of different heights, as shown in Figures 11 and 14. During the molding process, the first bottom surface 111a is in contact with the middle core pull 320, while the second bottom surface 111b forms a certain distance from the middle core pull 320; the first bottom surface 111a and the second bottom surface 111b can also be flush, with the first bottom surface 111a and the second bottom surface 111b merging into a single surface, namely the window bottom surface 111. As shown in Figure 15, during the molding process, the entire window bottom surface 111 is in contact with the middle core pull 320.

[0072] Based on the above structure, the following embodiments are specifically proposed:

[0073] Example 1

[0074] As shown in Figures 6 and 7, in this embodiment, a sensor mounting position 120 is formed by providing a mounting groove on the window top surface 112. Specifically, the transparent window body 110 is provided with a sidewall inner surface 141. The sidewall inner surface 141 and the first top surface 112a enclose the sensor mounting position 120. The sensor mounting position 120 is a cavity structure with an upper opening. The first top surface 112a is the bottom surface of the cavity structure, and the sidewall inner surface 141 is the side surface of the cavity structure. A sidewall 140 is formed outside the sensor mounting position 120. The upper surface of the sidewall 140 is the second top surface 112b, and the inner side surface of the sidewall 140 is the aforementioned sidewall inner surface 141. Due to the above structure, the height from the first top surface 112a to the second top surface 112b is greater than 0. The sensor mounting position 120 serves as a slot for mounting the sensor element, thereby facilitating the installation of the sensor element.

[0075] As shown in Figures 6 and 7, the transparent window structure 100 in this embodiment further includes a fixing portion 130, which is disposed on the transparent window body 110 and is used to cooperate with the mold 300 to fix the sidewall 140 of the transparent window body 110. The fixing portion 130 can be configured in various structures, such as a groove, a hole, or a boss. Due to the fixing portion 130 disposed on the transparent window body 110, during molding, a matching positioning structure 312 is also provided on the molding mold 300. During the molding process, the positioning structure 312 can cooperate with the fixing portion 130 to fix the sidewall 140 of the transparent window body 110.

[0076] The fixing portion 130 in this embodiment includes a fixing hole 132, which can be provided on the second top surface 112b of the side wall 140. There can be one or more fixing holes 132. To enhance stability, multiple fixing holes 132 in this embodiment can be provided. Multiple fixing holes 132 are provided on the second top surface 112b and surround the sensor mounting position 120.

[0077] As shown in FIG8 , during molding, the upper pressure structure 311 abuts against the first top surface 112a, the first bottom surface 111a abuts against the middle core pull 320, and the fixing hole 132 is used to fix the side wall 140 by embedding the positioning structure 312 on the mold 300. By providing the fixing hole 132 to cooperate with the positioning structure 312 on the upper pressure structure 311, when the upper pressure structure 311 is pressed into the sensor mounting position 120, the positioning structure 312 is also pressed into the fixing hole 132, so that at least the outer wall of the positioning structure 312 abuts against the inner wall of the fixing hole 132 for support. The positioning structure 312 can support the side wall 140 to prevent the side wall 140 from being deformed by impact, thereby preventing the entire transparent window structure 100 from being deformed and moving due to the deformation of the side wall 140, thereby preventing the molding material from seeping into the space between the first bottom surface 111a and the middle core pull 320 of the mold and causing glue overflow.

[0078] Specifically, the positioning structure 312 is cylindrical, and the fixing hole 132 is a circular hole that matches the positioning structure 312. The outer wall of the positioning structure 312 abuts the inner wall of the fixing hole 132, exerting a lateral restraining force on the sidewall 140 to prevent the sidewall 140 from shifting laterally. The outer wall of the positioning structure 312 and the inner wall of the fixing hole 132 can also generate friction, with the friction force being directed along the radial direction of the fixing hole 132. This friction force thus forms a longitudinal restraining force on the sidewall 140 to prevent the sidewall 140 from shifting longitudinally. In addition, the end of the positioning structure 312 can also abut the bottom of the fixing hole 132, thereby also exerting a longitudinal restraining force on the sidewall 140 to prevent the sidewall 140 from shifting longitudinally. By cooperating with multiple positioning structures 312 and multiple fixing holes 132, multiple positions on the sidewall 140 can be fixed, and rotational movement or twisting deformation of the sidewall 140 can also be prevented.

[0079] In addition, under the action of the fixing portion 130, the side wall 140 of the transparent window body 110 can fit tightly with the corresponding upper pressure structure 311 or the lower pressure structure 331. During the molding process, the molding material can be prevented from penetrating into the sensor mounting position 120, thereby avoiding obstruction of the sensor mounting position 120.

[0080] Example 2

[0081] As shown in FIG9 , this embodiment differs from the first embodiment in that the height from the first top surface 112a to the second top surface 112b is zero. As a result, the first top surface 112a and the second top surface 112b are integrated into a single plane. That is, the window top surface 112 is a single, integrated surface, comprising the first top surface 112a and the second top surface 112b surrounding the first top surface 112a. The first top surface 112a forms a sensor mounting position 120 for mounting a sensor element, while the second top surface 112b is used to provide a fixing hole 132.

[0082] The fixing holes 132 can be one or more. To enhance stability, multiple fixing holes 132 can be provided in this embodiment. The multiple fixing holes 132 are evenly distributed along the edge of the second top surface 112b, for example, respectively provided at the four corners of the second top surface 112b. By providing the fixing holes 132 and cooperating with the positioning structure 312, when the upper pressure structure 311 is pressed against the window top surface 112, the positioning structure 312 is also pressed into the fixing holes 132, so that at least the outer wall of the positioning structure 312 abuts against the inner wall of the fixing holes 132 for support. Since the fixing holes 132 are located at the edge of the window top surface 112, the positioning structure can support the edge of the transparent window body 110, preventing the edge of the transparent window body 110 from being deformed by impact.

[0083] Example 3

[0084] As shown in Figures 10, 11, and 12, based on the first embodiment, the fixing portion 130 further includes: a plurality of supporting columns 131, the supporting columns 131 being arranged on the top surface 112 of the window body, the fixing holes 132 being provided on the supporting columns 131, and the plurality of supporting columns 131 being arranged corresponding to the plurality of fixing holes 132. In the specific structure, the supporting columns 131 are located in the sensor mounting position 120 and connected to the first top surface 112a and the inner surface 141 of the side wall, thereby occupying a certain amount of space in the sensor mounting position 120. The supporting columns 131 provide opening positions for the fixing holes 132, so that a larger fixing hole 132 can be provided. The larger fixing hole 132 can increase the contact area with the positioning structure 312, thereby improving the stability of the fixation, while also not affecting the structural strength of the side wall 140. The positioning structure 312 on the upper pressure structure 311 can be a positioning pin, which matches the fixing hole 132. Four supporting columns 131 are provided, which are respectively provided at the four corners of the sensor mounting position 120, so that each side has two upper positioning pins to fix the position of the side wall 140, and the four corners are fixed by matching the fixing holes 132 and the positioning structure 312, which makes it more stable. The opening direction of the fixing hole 132 is consistent with the opening direction of the sensor mounting position 120 to facilitate the insertion and removal of the positioning pin. The fixing hole 132 can specifically be a circular hole, a slotted hole or other polygonal hole. The supporting column 131 can also be provided on the outside of the side wall 140 and connected to the second top surface 112b and the outer surface of the side wall. Accordingly, the fixing hole 132 is also located on the supporting column 131 and matches the positioning pin of the positioning structure 312 to fix the side wall 140.

[0085] Example 4

[0086] In the first or third embodiment, the window bottom surface 111 includes a first bottom surface 111a and a second bottom surface 111b, and there is a height difference between the second bottom surface 111b and the first bottom surface 111a, thereby forming a limiting step. However, in the prior art, the window bottom surface 111 may be a single surface without a step, so the height difference between the second bottom surface 111b and the first bottom surface 111a is zero, and the second bottom surface 111b and the first bottom surface 111a are integrated into a single body, namely the window bottom surface 111, thus forming a large bottom surface. During molding, as shown in FIG15, if the technology of matching the fixing hole 132 with the positioning pin of the positioning structure 312 in the first or third embodiment is also used to fix the side wall 140, glue overflow can also be prevented.

[0087] Example 5

[0088] As shown in Figures 16 and 17 , this embodiment, based on the first, second, third, or fourth embodiments, utilizes an alternative fixing portion 130 structure. Specifically, the fixing portion 130 includes a fixing boss 135 protruding from the surface of the support column 131 or the second top surface 112b of the transparent window body 110. Accordingly, the positioning structure 312 on the mold 300 is provided with a groove structure. The fixing boss 135 is used to secure the sidewall 140 by fitting within the groove structure of the positioning structure 312 on the mold 300. By fitting the positioning structure 312 on the mold 300 over the fixing boss 135, the outer surface of the fixing boss 135 abuts against the inner wall of the groove structure of the positioning structure 312. This allows the positioning structure 312 to provide structural reinforcement to the transparent window body 110, including the sidewall 140, and secure the sidewall 140 during the molding process.

[0089] Example 6

[0090] As shown in Figures 18 and 19, the transparent window structure 100 in this embodiment includes a transparent window body 110 and a sensor mounting position 120. The transparent window body 110 has a window bottom surface 111 facing the part to be measured and a window top surface 112 facing away from the part to be measured. The sensor mounting position 120 is arranged on the window top surface 112. The window top surface 112 and the window bottom surface 111 are further provided with an upper pressure surface 160 and a lower pressure surface 170, respectively. The area of ​​the upper pressure surface 160 is greater than or equal to the area of ​​the lower pressure surface 170. During the molding process, the upper pressure surface 160 is used to contact the upper pressure structure 311 or the lower pressure structure 331 of the mold 300 and withstand the pressure applied thereto, and the lower pressure surface 170 is used to abut against the middle core pulling 320 and withstand the pressure applied by the upper pressure structure 311 or the lower pressure structure 331.

[0091] In this embodiment, as shown in Figures 19 and 20, the window top surface 112 includes a first top surface 112a, which serves as the bottom surface of the sensor mounting position 120. The upper pressure-bearing surface 160 includes the first top surface 112a. The window bottom surface 111 includes a first bottom surface 111a, which serves as the lower pressure-bearing surface 170. Thus, the area of ​​the first bottom surface 111a is less than or equal to the area of ​​the first top surface 112a. The orthographic projection of the first bottom surface 111a on the first top surface 112a is located within the area of ​​the first top surface 112a, thereby ensuring that the range of the first top surface 112a completely covers the first bottom surface 111a. When the first top surface 112a is subjected to force, the force-applying area completely covers the first bottom surface 111a, thereby ensuring a more even distribution of force on the first bottom surface 111a and pressing the edge of the first bottom surface 111a against the middle core pull 320 to prevent glue overflow.

[0092] In other embodiments, the upper pressure surface 160 may also include other surfaces on the window top surface 112 that receive the pressure structure of the mold for extrusion; as shown in Figure 21, the transparent window body 110 also includes a side wall 140 located on the side away from the part to be measured, and the window top surface 112 also includes a second top surface 112b, which is the upper surface of the side wall 140, and the upper pressure surface 160 also includes at least a portion of the second top surface 112b.

[0093] As shown in Figures 19 and 26, in addition, the window bottom surface 111 also includes a second bottom surface 111b; the second bottom surface 111b is arranged around the outer side of the first bottom surface 111a, and there is a height difference between the second bottom surface 111b and the first bottom surface 111a, thereby forming a limiting step, so that the formed support member 200 cooperates with the limiting step to ensure a more secure connection with the transparent window body 110.

[0094] As shown in Figures 19 and 20 , when using the transparent window structure 100 of this embodiment, during the manufacture of the blood oxygen sensor of this embodiment, the fabricated transparent window body 110 is first placed within the mold 300. The upper pressure-bearing surface 160 of the upper transparent window structure 100 abuts against the upper pressure-applying structure 311 of the mold 300 and receives the pressure therefrom. The upper pressure-bearing surface 160 of the lower transparent window structure 100 abuts against the lower pressure-applying structure 331 of the mold 300 and receives the pressure therefrom. The lower pressure-bearing surface 170 of each transparent window structure 100 abuts against the central core 320 of the mold 300. The pressure applied by the upper pressure-applying structure 311 to the upper pressure-bearing surface 160 of the upper transparent window structure 100 is transmitted to the lower pressure-bearing surface 170 of the upper transparent window structure 100, and the pressure applied by the lower pressure-applying structure 331 to the upper pressure-bearing surface 160 of the lower transparent window structure 100 is transmitted to the lower pressure-bearing surface 170 of the lower transparent window structure 100. Each lower pressure surface 170 indirectly receives pressure from the upper pressure structure 311 or the lower pressure structure 331, resulting in a tight compression between each lower pressure surface 170 and the middle core pull 320. Therefore, the transparent window structure 100 is fixed within the mold 300 and is not easily displaced. From another perspective, the pressure on the lower pressure surface 170 can also be considered to be applied by the middle core pull 320. The upper pressure structure 311 and the middle core pull 320 clamp the transparent window structure 100 located above, while the lower pressure structure 331 and the middle core pull 320 clamp the transparent window structure 100 located below. Thus, the upper mold 310, the upper pressure structure 311, the middle core pull 320, the lower mold 330, and the lower pressure structure 331 enclose a filling cavity 340 that conforms to the shape of the support member 200 of the desired blood oxygen sensor. A high-temperature non-transparent molding material is injected into this filling cavity 340, and after cooling, the blood oxygen sensor of the present invention is obtained.

[0095] In this embodiment, the area of ​​the upper pressure surface 160 is greater than or equal to the area of ​​the lower pressure surface 170, so that the sensor mounting position 120 can accommodate an upper pressure structure 311 or a lower pressure structure 331 that is larger than the area of ​​the lower pressure surface 170. The pressure exerted by the upper pressure structure 311 on the lower pressure surface 170 is large and uniform, so that the edge position of the lower pressure surface 170 is also within the range of pressure exerted by the upper pressure structure 311, so that the edge of the first bottom surface 111a also has sufficient pressure to resist the impact force during the molding process without deformation, thereby effectively preventing the molding material from penetrating into the first bottom surface 111a during the molding process, thereby forming a product without glue overflow similar to that shown in Figure 5(b).

[0096] In addition, when performing blood oxygen detection, the lower pressure surface 170 also serves as a light passage. On the transparent window structure 100 on the side where the light-emitting element is located, the light emitted by the light-emitting element passes through the first top surface 112a and the lower pressure surface 170 in sequence before reaching the part to be measured. On the transparent window structure 100 on the side where the photosensitive element is located, the light emitted by the light-emitting element passes through the part to be measured, and then passes through the lower pressure surface 170 and the first top surface 112a in sequence before reaching the photosensitive element. Therefore, if the area of ​​the lower pressure surface 170 is large, then when performing blood oxygen detection, external stray light can easily enter from the edge of the lower pressure surface 170, causing the blood oxygen saturation probe to be easily interfered with by external stray light. In this embodiment, the area of ​​the lower pressure surface 170 is reduced. After molding is completed, not only can the risk of glue overflow be greatly reduced, but also external stray light is not easily entered from the edge of the lower pressure surface 170, thereby reducing stray light interference and improving the accuracy of blood oxygen detection.

[0097] As shown in Figure 19 , in this embodiment, the center point of the orthographic projection of the first bottom surface 111a onto the plane of the first top surface 112a coincides with the center point of the first top surface 112a. Aligning these centers creates symmetry in the forces acting on the side edges of the first bottom surface 111a. This structural solution not only minimizes deformation during molding but also maximizes contact with the surface of the intermediate core pull 320, ensuring stable positioning of the transparent window body 110 within the mold 300. Furthermore, once the blood oxygen saturation sensor is formed, it effectively avoids stray light interference.

[0098] It should be noted that the purpose of the upper pressure surface 160 being greater than or equal to the lower pressure surface 170 is to enable the upper pressure surface 160 to cover the edge portion of the lower pressure surface 170. As a result, the pressure applied by the upper pressure structure 311 or the lower pressure structure 331 to the upper pressure surface 160 can be effectively transmitted to the edge portion of the lower pressure surface 170, thereby pressing the edge portion of the lower pressure surface 170 and the middle core pull 320 tightly, thereby preventing the molding material from seeping into the edge of the lower pressure surface 170 during the molding process and causing product failure. It can be seen from this that as long as the edge of the lower pressure surface 170 is pressed tightly, the molding material cannot seep into the edge of the lower pressure surface 170, and even more so, it cannot seep into the central area of ​​the lower pressure surface 170.

[0099] Sometimes, the contact surface between the upper pressure structure 311 and the lower pressure structure 331 and the first top surface 112 is designed to be a hollow structure. For example, the contact surface between the upper pressure structure 311 and the lower pressure structure 331 is in the shape of a "mouth", that is, there is a groove in the middle of the upper pressure structure 311 and the lower pressure structure 331, and the groove does not contact the first top surface 112, and only the surrounding parts are in contact with the first top surface 112. Therefore, during the molding process, only the edge portion of the upper pressure surface 160 contacts the "mouth"-shaped contact surface of the upper pressure structure 311, and the middle portion of the upper pressure surface 160 corresponds to the hollow portion of the upper pressure structure 311 or the lower pressure structure 331 but does not contact the upper pressure structure 311 or the lower pressure structure 331. In this case, although the actual contact area of ​​the upper pressure surface 160 is smaller than the area surrounded by the "mouth"-shaped contact surface of the upper pressure structure 311 or the lower pressure structure 331, the transmitted clamping force has already compressed the surrounding areas of the lower pressure surface 170, and can also play a certain role in fixing the transparent window body 110, but the fixing effect is smaller than the effect when the upper pressure structure 311 or the lower pressure structure 331 is solid. However, in this case, the area of ​​the upper pressure surface 160 is still the area surrounded by the contact surface of the upper pressure structure 311 or the lower pressure structure 331 , and is not affected by the hollow structure to reduce the area of ​​the upper pressure surface 160 .

[0100] When the upper pressure structure 311 and the lower pressure structure 331 are solid structures, the shapes of the upper pressure structure 311 and the lower pressure structure 331 are consistent with the upper pressure surface 160, and the area of ​​the upper pressure surface 160 is equal to the area on the window top surface 112 that contacts the upper pressure structure 311 or the lower pressure structure 331.

[0101] If the upper pressure structure 311 and the lower pressure structure 331 are notch structures, such as the contact surface shape of the upper pressure structure 311 and the lower pressure structure 331 is C-shaped, such an implementation does not deviate from the inventive concept of the present invention, and the variation of the technical solution of the above-mentioned upper pressure structure 311 and the lower pressure structure 331 being notch structures will still fall within the scope of protection of the present invention.

[0102] Example 7

[0103] As shown in Figures 22 and 23, the solution of setting the fixing part 130 in the above embodiment can be combined with the solution of the area of ​​the upper pressure surface 160 being greater than or equal to the area of ​​the lower pressure surface 170, which can better solve the problems existing in the prior art.

[0104] As shown in Figures 22 and 23, the solutions of Example 1 and Example 6 are combined to form a new solution of this embodiment. The transparent window structure 100 in this embodiment not only makes the area of ​​the upper pressure-bearing surface 160 larger than the area of ​​the lower pressure-bearing surface 170, but also provides a fixing portion 130. This not only makes the area of ​​the first bottom surface 111a smaller than the area of ​​the first top surface 112a, but also provides the fixing portion 130 to fix the side wall 140 outside the sensor mounting position 120. The combination of the two aforementioned solutions not only achieves greater and more evenly distributed pressure on the window bottom surface 111a, allowing the window bottom surface (first bottom surface 111a) of the transparent window body 110 to fully fit the surface of the middle core pull 320 of the mold 300, but also secures the side wall 140, preventing it from moving and deforming when impacted during the molding process.

[0105] As shown in FIG24 , the solutions of Example 3 and Example 6 are combined. When the area of ​​the first bottom surface 111a is smaller than the area of ​​the first top surface 112a, the fixing hole 132 is engaged by the positioning structure 312 on the mold 300. The positioning structure 312 can not only abut against the inner wall of the fixing hole 132, but also abut and squeeze against the bottom surface 133 of the fixing hole 132, thereby achieving a more stable fixation of the side wall 140 of the transparent window body 110. Because the positioning structure 312 abuts and squeezes the bottom surface 133 of the fixing hole 132, the upper pressure surface 160 includes not only the first top surface 112a, but also the bottom surface 133 of the fixing hole 132. It should be noted that, based on the above, the upper pressure surface 160 can also include the second top surface 112b to maximize the pressure area of ​​the upper pressure surface 160.

[0106] As shown in Figure 24, in the specific structure, when the fixing part 130 formed by the supporting column 131 and the fixing hole 132 is used in conjunction with the first top surface 112a, the upper pressure surface 160 includes the first top surface 112a and the bottom surface 133 of the fixing hole 132, and the inner bottom surface of the fixing hole 132 covers the top corner edge of the first bottom surface 111a. By setting the fixing hole 132, when the positioning structure 312 on the mold 300 is inserted into the fixing hole 132, not only the side of the fixing hole 132 is positioned, but also the bottom surface 133 of the fixing hole 132 is squeezed to a certain extent. This is equivalent to increasing the extrusion force area above, thereby expanding the coverage range of the upper pressure surface 160, and substantially reducing the ratio of the area of ​​the lower pressure surface 170 to the area of ​​the upper pressure surface 160. Moreover, since the bearing column 131 can be set at the corner in the sensor mounting position 120, the edge line of the first bottom surface 111a can be located in the area covered by the bottom surface 133 of the fixing hole 132, so that the bottom surface 133 of the fixing hole 132 is squeezed by the positioning structure 312, so that the positioning structure 312 also puts pressure on the edge of the first bottom surface 111a, so that the edge of the first bottom surface 111a is not easily impacted and separated from the surface of the middle core pulling 320, further improving the connection stability, and improving the glue overflow problem during the molding process more significantly. When the positioning portion 130 adopts the structure of the fixed boss 135 , the principle is the same as above and will not be described in detail.

[0107] Therefore, by providing the fixing portion 130, not only is the coverage of the upper pressure surface 160 expanded, but the first bottom surface 111a is more comprehensively covered by the pressure area surrounded by the multiple fixing holes 132 or the fixing bosses 135. The multiple fixing holes 132 or the fixing bosses apply force to the first bottom surface 111a at multiple points, so that the side wall 140 of the transparent window body 110 will not shift during molding.

[0108] Example 8

[0109] As shown in Figures 25 and 26 , this embodiment further provides a blood oxygen saturation probe, comprising: a support member 200 for placement on a portion to be measured, at least one sensor element (not shown), and the transparent window structure 100 described above (see the transparent window structure 100 in Example 7). At least one transparent window structure 100 is provided, with at least one transparent window structure 100 disposed on the support member 200, and at least one sensor element disposed within the at least one transparent window structure 100. A blood oxygen saturation probe formed using the transparent window structure 100 described above avoids the problem of glue overflow during the molding process.

[0110] Furthermore, the support member 200 in this embodiment specifically includes a first clamping portion 220, a second clamping portion 230, and a connecting portion 240 connecting the first clamping portion 220 and the second clamping portion 230. The upper and lower ends of the connecting portion 240 connect the front ends of the first clamping portion 220 and the second clamping portion 230, respectively. The first clamping portion 220, the second clamping portion 230, and the connecting portion 240 enclose a receiving space 210. The first clamping portion 220, the second clamping portion 230, and the connecting portion 240 are integrally molded from a flexible material, such as silicone or rubber. This improves wearing comfort and simplifies the clamping structure, making the blood oxygen sensor easier to assemble. Because flexible materials lack inherent rigidity and elasticity, they cannot securely clamp to a subject's finger on their own. Therefore, additional fixing components are required. These fixing components are provided on the first clamping portion 220 and the second clamping portion 230.

[0111] Furthermore, a first fixing groove 221 is provided at one end of the first clamping portion 220 away from the connecting portion 240, and a second fixing groove 231 is provided at one end of the second clamping portion 230 away from the connecting portion 240. The first fixing groove 221 and the second fixing groove 231 both extend in the front-to-back direction and are arranged correspondingly at the upper and lower positions; the fixing assembly includes a fixing belt wrapped around the first fixing groove 221 and the second fixing groove 231, and the fixing belt can be medical tape, rubber band, Velcro, etc.

[0112] In other embodiments, the first clamping portion 220 and the second clamping portion 230 may be made of a hard material, and the connecting portion 240 may include a pin and a spring. The first clamping portion 220 and the second clamping portion 230 are movably connected via the pin, and the two ends of the spring are respectively connected to the first clamping portion 220 and the second clamping portion 230. The spring is used to apply a closing force to the first clamping portion 220 and the second clamping portion 230. In this way, the first clamping portion 220 and the second clamping portion 230 can be opened and clamped on the finger to secure them without the need for additional fixing parts.

[0113] In other embodiments, the support member 200 may also be a finger sleeve with an open rear end, and the light emitting element and the light sensing element are disposed in the finger sleeve.

[0114] As shown in Figure 26 , the transparent window structure 100 further comprises two components. The transparent window body 110 of each transparent window structure 100 is embedded within a support member 200. A mounting opening 250 is provided on the side of the support member 200 facing the sensor mounting position 120. The length and width of the mounting opening 250 are both smaller than the area of ​​the window top surface 112 of the transparent window body 110. The provision of the mounting opening 250 allows for the upper and lower pressure structures 331 to be accommodated during the molding process, and facilitates the installation of the sensor element on the sensor mounting position 120. The mounting opening 250 communicates vertically with the sensor mounting position 120.

[0115] In some prior arts, as shown in Figures 1 and 2, the size of the mounting opening 250 is smaller than the size of the sensor mounting position 120, which makes it difficult to remove the upper pressure structure 311 and the lower pressure structure 311 after molding, and also results in too little operating space for installing the sensor element. As shown in Figure 26, in order to solve the above technical problems, the size of the mounting opening 250 in this solution can be consistent with the size of the sensor mounting position 120. On the one hand, the size of the mounting opening 250 is large enough to facilitate the removal of the upper pressure structure 311 and the lower pressure structure 331 after molding and to facilitate the installation of the sensor element; on the other hand, the outer edge portion of the mounting opening 250 can cover the top surface of the side wall 140 of the transparent window body 110, so that the transparent window body 110 is fixed more firmly.

[0116] As shown in Figure 26, the inner wall of the accommodating space 210 is a curved surface, and the window bottom surface 111 is a curved surface that smoothly connects with the inner wall of the accommodating space 210. To enhance wearing comfort, the inner wall of the accommodating space 210 is a curved surface that matches the shape of the finger. The bottom surface 111 of the transparent window body 110 is also a curved surface, and they smoothly connect at the connection. This curved surface matches the shape of the finger, improving wearing comfort. In addition, the inner sides of the first clamping portion 220 and the second clamping portion 230 are curved surfaces that match the shape of the finger.

[0117] The sensor elements of a blood oxygen sensor include a light-emitting element and a photosensitive element. Depending on the optical path, blood oxygen sensors can be classified as either transmissive or reflective. In a transmissive blood oxygen sensor, the light-emitting element and photosensitive element are located on opposite sides of the finger. Light of a specific wavelength emitted by the light-emitting element penetrates the subject's finger and reaches the photosensitive element. In contrast, in a reflective blood oxygen sensor, the light-emitting element and photosensitive element are positioned adjacent to each other. Light of a specific wavelength emitted by the light-emitting element strikes the subject's finger, with some of the light reflected back to the photosensitive element. Transmissive blood oxygen sensors offer higher accuracy than reflective ones. Therefore, two transparent window structures 100 are provided in this embodiment, one on each of the first clamping portion 220 and the other on the second clamping portion 230. Thus, during blood oxygen testing, the light-emitting element and photosensitive element are located on opposite sides of the user's finger, forming a transmissive optical path. It should be noted that in other embodiments, a reflective structure can also be used.

[0118] As shown in Figures 25 and 26, the support member 200 further includes a wire outlet 260 and a wire channel 270. The wire outlet 260 is located at an end of the first clamping portion 220 away from the connecting portion 240. The wire channel 270 is located within the first clamping portion 220 and the second clamping portion 230 and is used to pass the wires connecting the two sensor elements. The wire channel 270 is used to connect the sensor mounting position 120 with the wire outlet 260 and is used to lead out the wires connecting the sensor elements. In a specific structure, if the blood oxygen saturation probe and the monitoring device are connected by wires, the wire outlet 260 and the wire channel 270 are provided to facilitate the arrangement of the wires. The wire outlet 260 is located at the rear end of the first clamping portion 220, and the wire channel 270 is located within the first clamping portion 220, the connecting portion 240, and the second clamping portion 230. The wires connecting the light-emitting element and the light-receiving element are routed through the wire channel 270 and can be passed through the wire outlet 260 to connect to the external monitoring device.

[0119] As shown in Figure 26, to facilitate the passage of wires, a notch 150 is provided on the side of the sensor mounting position 120, where it communicates with the wire channel 270. In other embodiments, notch 150 may be omitted, allowing the wires to enter from above the sensor mounting position 120; or notches 150 may be provided on both sides of the sensor mounting position 120. In other embodiments, the light-emitting element, light-sensing element, and external monitoring equipment may be connected via a wireless communication module, or the blood oxygen monitoring circuit may be directly mounted on the blood oxygen sensor.

[0120] In the above-described embodiment, blood oxygen detection on the fingers of the subject is used as an example for explanation, but the application of the application scheme is not limited to detection on the fingers of the subject. After adjusting the shape of the accommodating space 210, it can also be applied to blood oxygen detection on other parts to be tested, such as toes, earlobes, etc.

[0121] Example 9

[0122] As shown in Figure 27, this embodiment differs from the eighth embodiment in the specific structure of the support member 200. The support member 200 in this embodiment includes an attachment 280, which is attached to the area to be measured. During use, it is attached to the area to be measured via the adhesive surface. A transparent window structure 100 (refer to the transparent window structure 100 in the seventh embodiment) is disposed within the attachment 280 and located on one side of the area to be measured. The sensor element is disposed within the transparent window structure 100. Therefore, the light-emitting element and the photosensitive element are disposed adjacent to each other through the transparent window structure 100. Light of a specific wavelength emitted by the light-emitting element is irradiated onto the subject's finger, and some of the light is reflected by the photosensitive element, thereby achieving reflective blood oxygen concentration detection. In this embodiment, a single transparent window structure 100 can be provided, with the light-emitting element and the photosensitive element disposed within the same transparent window structure 100. Alternatively, two adjacent transparent window structures 100 can be provided, with the light-emitting element and the photosensitive element disposed within each transparent window structure 100.

[0123] In summary, this application proposes a transparent window and a blood oxygen saturation probe, which have the following advantages:

[0124] (1) A fixing portion is provided for fixing the side wall of the transparent window body. During the molding process, the fixing portion can prevent the side wall of the transparent window body from being deformed due to the impact of the molding material, thereby preventing the transparent window body from being displaced and preventing the molding material from penetrating into the bottom surface of the window body. On the other hand, the fixing portion can also make the side wall fit tightly with the corresponding upper pressure structure or lower pressure structure to prevent the molding material from penetrating into the sensor installation position.

[0125] (2) The upper pressure surface of the transparent window body is larger than the lower pressure surface. Therefore, during the molding process, when the transparent window body is pressurized by the pressure structure of the mold, the pressure transmitted by the upper pressure surface causes the bottom surface of the window to be subjected to greater pressure and is more evenly distributed, so that the bottom surface of the window of the transparent window body can be fully fitted with the middle core-pulling surface of the mold, effectively preventing the molding material from penetrating into the surface of the bottom surface of the window of the transparent window body and causing irregular obstruction. In addition, by reducing the area of ​​the bottom surface of the window of the window body, stray light interference can be reduced, thereby improving the accuracy of blood oxygen detection.

[0126] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A transparent window structure (100) for being arranged on a support member (200), wherein the support member (200) is arranged at a part to be measured, wherein: The transparent window structure (100) comprises: A transparent window body (110), the transparent window body (110) having a window bottom surface (111) facing the part to be measured, a window top surface (112) facing away from the part to be measured, and a side wall (140); The window top surface (112) includes a first top surface (112a) and a second top surface (112b); the portion of the window top surface (112) surrounded by the inner surface (141) of the side wall (140) is the first top surface (112a); the upper surface of the side wall (140) is the second top surface (112b); the height from the first top surface (112a) to the second top surface (112b) is ≥0; A sensor installation position (120), the sensor installation position (120) being arranged on the window top surface (112) of the transparent window body (110) and being used for arranging at least one sensor element; At least one fixing portion (130) is provided on the transparent window body (110) and is used to cooperate with the mold (300) to fix the side wall (140) to prevent it from moving when the support member is formed.

2. The transparent window structure (100) according to claim 1, wherein: The fixing portion (130) comprises at least one fixing hole (132), and the fixing hole (132) is used to fix the side wall (140) by embedding a positioning structure (312) on the mold (300).

3. The transparent window structure (100) according to claim 2, wherein: A plurality of fixing holes (132) are provided.

4. The transparent window structure (100) according to claim 3, wherein: The plurality of fixing holes (132) are symmetrically distributed around the center of the sensor installation position (120).

5. The transparent window structure (100) according to claim 2, wherein: The fixing portion (130) further comprises: at least one bearing column (131), the bearing column (131) being arranged on the top surface (112) of the window body and connected to the side wall (140), and the fixing hole (132) being provided on the bearing column (131).

6. The transparent window structure (100) according to claim 1, wherein: The fixing portion (130) includes a fixing boss (135) connected to the side wall (140), and the fixing boss (135) is used to fix the side wall (140) by being sleeved with a positioning structure (312) on the mold (300).

7. The transparent window structure (100) according to claim 1, wherein: The fixing portion (130) includes: a bearing column (131) arranged on the top surface (112) of the window body and connected to the side wall (140); and a fixing boss (135) arranged on the bearing column (131) and used to fix the side wall (140) by being sleeved with a positioning structure (312) on the mold (300).

8. A transparent window structure (100) for being arranged on a support member (200), wherein the support member (200) is arranged at a part to be measured, wherein: The transparent window structure (100) comprises: A transparent window body (110), the transparent window body (110) having a window bottom surface (111) facing the part to be measured and a window top surface (112) facing away from the part to be measured; a sensor installation position (120), the sensor installation position (120) being arranged on the top surface (112) of the window body and being used for arranging a sensor element; An upper pressure-bearing surface (160) is provided on the top surface (112) of the window body. When forming the support member, the upper pressure-bearing surface (160) is used to contact with the upper pressure-applying structure (311) of the mold (300) and withstand the pressure applied thereto, or to contact with the lower pressure-applying structure (331) of the mold (300) and withstand the pressure applied thereto; A lower pressure surface (170) is provided on the bottom surface (111) of the window body. When forming the support member, the lower pressure surface (170) is used to abut against the middle core pulling (320) of the mold (300) and withstand the pressure applied by the upper pressure structure (311) or the lower pressure structure (331); The area of ​​the upper pressure-bearing surface (160) is greater than or equal to the area of ​​the lower pressure-bearing surface (170).

9. The transparent window structure (100) according to claim 8, wherein: The upper pressure-bearing surface (160) includes a first top surface (112a), and the first top surface (112a) is the bottom surface of the sensor installation position (120).

10. The transparent window structure (100) according to claim 9, wherein: The window bottom surface (111) includes a first bottom surface (111a), and the first bottom surface (111a) is the lower pressure surface (170); The area of ​​the first bottom surface (111a) is smaller than or equal to the area of ​​the first top surface (112a), and the orthographic projection of the first bottom surface (111a) on the first top surface (112a) is located within the area of ​​the first top surface (112a).

11. The transparent window structure (100) according to claim 10, wherein: The window bottom surface (111) further includes a second bottom surface (111b); The second bottom surface (111b) is arranged around the outer side of the first bottom surface (111a); There is a height difference between the second bottom surface (111b) and the first bottom surface (111a), and the first bottom surface (111a) protrudes from the second bottom surface (111b).

12. The transparent window structure (100) according to claim 10, wherein: The center point of the orthographic projection of the first bottom surface (111a) on the plane of the first top surface (112a) coincides with the center point of the first top surface (112a).

13. The transparent window structure (100) according to claim 9, wherein: The transparent window body (110) further comprises a side wall (140) located on a side thereof away from the part to be measured, the upper surface of the side wall (140) being a second top surface (112b), and the upper pressure surface (160) further comprising at least a portion of the second top surface (112b).

14. A blood oxygen saturation probe, wherein: include: A support member (200), the support member (200) being used for being arranged at a part to be measured; multiple sensor elements; as well as, The transparent window structure (100) according to any one of claims 1 to 13; At least one transparent window structure (100) is provided, at least one transparent window structure (100) is provided on the support member (200), and at least one sensor element is provided in the transparent window structure (100).

15. The blood oxygen saturation probe according to claim 14, wherein: The support member (200) has an accommodating space (210), and the accommodating space (210) is used to accommodate a part to be measured.

16. The blood oxygen saturation probe according to claim 15, wherein: The inner wall of the accommodating space (210) is a curved surface that fits the shape of the part to be measured, and the bottom surface (111) of the window is a curved surface that smoothly connects with the inner wall of the accommodating space (210).

17. The blood oxygen saturation probe according to claim 15, wherein: The support member (200) comprises: a first clamping portion (220), a second clamping portion (230), and a connecting portion (240) connecting the first clamping portion (220) and the second clamping portion (230); the first clamping portion (220), the second clamping portion (230), and the connecting portion (240) enclose the accommodating space (210); Two transparent window structures (100) are provided, and the two transparent window structures (100) are respectively provided on the first clamping portion (220) and the second clamping portion (230); The sensor element comprises a light emitting element and a light sensing element, which are respectively arranged at the sensor mounting positions (120) of the two transparent window structures (100).

18. The blood oxygen saturation probe according to claim 17, wherein: The support member (200) further comprises a wire outlet (260) and a wire channel (270), wherein the wire outlet (260) is arranged at the outer end portion of the first clamping portion (220), and the wire channel (270) is arranged inside the first clamping portion (220) and inside the second clamping portion (230) and is used to pass a wire connecting the two sensor elements, and the wire channel (270) is used to connect the sensor mounting position (120) with the wire outlet (260).

19. The blood oxygen saturation probe according to claim 14, wherein: The support member (200) comprises: an attachment member (280), the attachment member (280) being used to be attached to a part to be tested; The transparent window structure (100) is arranged in the attachment (280) and is located on one side of the part to be tested.

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