Blood oxygen probe and detection part fixing piece thereof

Abstract

The invention relates to a blood oxygen probe and a detection part fixing piece thereof, the detection part fixing piece is provided with a first connecting part and a second connecting part, the first connecting part is provided with a first flexible connecting part, or / and the second connecting part is provided with a second flexible connecting part; the transmitting assembly comprises a first light transmitting bundle and a transmitting part, the connecting end of the first light transmitting bundle is detachably connected with the first flexible connecting part, the receiving assembly comprises a second light transmitting bundle and a receiving part, and the connecting end of the second light transmitting bundle is detachably connected with the second flexible connecting part; the first connecting part and the second connecting part can define a detection cavity, so that the first flexible connecting part and the second flexible connecting part extend along a first direction and are oppositely arranged, and the first direction intersects with the extension direction of the detection part; the first light-transmitting bundle and the second light-transmitting bundle are repeatedly disassembled and assembled without influencing the fixed part of the detection part, and the blood oxygen probe is convenient to disassemble and assemble, so that the use experience of a user is favorably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of blood oxygen probes, and particularly to a blood oxygen probe and a fixing member for a detection site thereof. Background Art

[0002] Blood oxygen probes are applicable to various blood oxygen monitoring application scenarios, such as clinical medicine, oxygen therapy management, exercise physiology research, sleep apnea monitoring, and sports training. Through the application of blood oxygen probes, accurate, stable, and non-invasive monitoring of blood oxygen levels can be achieved, the effect of clinical monitoring and research evaluation can be improved, and more comprehensive health management and treatment guidance can be provided.

[0003] In the scenario of magnetic resonance imaging, due to the particularity of its application environment, an optical fiber blood oxygen probe must be used. The principle of detecting blood oxygen saturation by the optical fiber blood oxygen probe is as follows: The light emitted by the LED (light-emitting diode) of the blood oxygen probe is conducted to the detection site through a light guide beam. After the light passes through the detection site, it will be absorbed by hemoglobin. Oxyhemoglobin and deoxyhemoglobin in the blood have different absorption abilities for light of different wavelengths. The remaining light is conducted to the PD (photodiode) of the blood oxygen probe through the light guide beam. The PD converts the remaining light into an electrical signal and transmits it to the signal processing unit for subsequent calculation and analysis, so as to obtain the measurement result of blood oxygen saturation.

[0004] The cost of an optical fiber blood oxygen probe is much higher than that of an ordinary blood oxygen probe. Different fixing members for detection sites are usually configured to adapt to different user groups, so it is necessary to frequently replace the fixing members for detection sites connected to the optical fiber blood oxygen probe. The fixing members for detection sites are often configured as elastic claws. After repeated disassembly and assembly between the elastic claws and the light guide beam, the elastic force of the elastic claws gradually fails, which will affect the fixing effect of the fixing member for the detection site on the light guide beam and cause errors in the measurement result. Summary of the Invention

[0005] Therefore, it is necessary to provide a blood oxygen probe and a fixing member for a detection site thereof to solve the problem that the light guide beam is easily detached from the fixing member for the detection site after repeated disassembly and assembly between the existing fixing member for the detection site and the light guide beam.

[0006] To achieve the above object, the inventor provides a blood oxygen probe, including:

[0007] A fixing member for a detection site for fixing the detection site, the fixing member for the detection site is provided with a first connection portion and a second connection portion, and a first flexible connection portion is provided on the first connection portion, or / and a second flexible connection portion is provided on the second connection portion;

[0008] Detection mechanism, the detection mechanism includes a housing, a transmitting component and a receiving component. The transmitting component includes a first light guide beam and a transmitting part. The fixed end of the first light guide beam is fixedly connected to the transmitting part, and the connecting end of the first light guide beam is detachably connected to the first flexible connecting part. The receiving component includes a second light guide beam and a receiving part. The fixed end of the second light guide beam is fixedly connected to the receiving part, and the connecting end of the second light guide beam is detachably connected to the second flexible connecting part. The transmitting part and the receiving part are oppositely arranged in the housing;

[0009] The first connecting part and the second connecting part can enclose a detection cavity, such that the first flexible connecting part and the second flexible connecting part extend along a first direction and are oppositely arranged. The first direction intersects with the extending direction of the detection part;

[0010] When the detection part is located in the detection cavity, the first light guide beam is used to transmit the optical signal emitted by the transmitting part to the first flexible connecting part, the second light guide beam is used to transmit the optical signal received by the second flexible connecting part after passing through the detection part to the receiving part, and the receiving part is used to convert the optical signal into an electrical signal to detect the blood oxygen parameter.

[0011] Further, the connecting end of the first light guide beam and the first flexible connecting part are rotatably connected, or / and the connecting end of the second light guide beam and the second flexible connecting part are rotatably connected.

[0012] Further, when the connecting end of the first light guide beam and the first flexible connecting part are rotatably connected, at least part of the side wall of the connecting end of the first light guide beam is an arc surface structure, or / and at least part of the side wall of the first flexible connecting part is an arc surface structure. The connecting end of the first light guide beam and the first flexible connecting part are rotatably connected through the arc surface structure;

[0013] When the connecting end of the second light guide beam and the second flexible connecting part are rotatably connected, at least part of the side wall of the connecting end of the second light guide beam is an arc surface structure, or / and at least part of the side wall of the second flexible connecting part is an arc surface structure. The connecting end of the second light guide beam and the second flexible connecting part are rotatably connected through the arc surface structure.

[0014] Further, at least part of the cross-section of the first flexible connecting part is circular, gourd-shaped, dumbbell-shaped, oval or fan-shaped, and at least part of the cross-section of the second flexible connecting part is circular, gourd-shaped, dumbbell-shaped, oval or fan-shaped.

[0015] Further, the cross-section of the connecting end of the first light guide beam is circular, oval or fan-shaped, and the cross-section of the connecting end of the second light guide beam is circular, oval or fan-shaped.

[0016] Further, the first flexible connecting portion and the second flexible connecting portion are through-hole structures.

[0017] Further, the first flexible connecting portion is a cylindrical hole, and the connecting end of the first light guide beam is cylindrical; the second flexible connecting portion is a cylindrical hole, and the connecting end of the second light guide beam is cylindrical.

[0018] Further, the blood oxygen probe further includes a rigid housing, and the rigid housing is wrapped outside the detection site fixing member;

[0019] And the rigid housing is provided with a first housing through-hole at a position corresponding to the first flexible connecting portion, and the rigid housing is provided with a second housing through-hole at a position corresponding to the second flexible connecting portion.

[0020] Further, there is a clearance fit between the first housing through-hole and the connecting end of the first light guide beam, and there is a clearance fit between the second housing through-hole and the connecting end of the second light guide beam.

[0021] Further, the detection site fixing member is a sleeve-type fixing member, a clamping-type fixing member or a strap-type fixing member.

[0022] Further, when the detection site fixing member is a sleeve-type fixing member or a strap-type fixing member, the detection site fixing member is made of a flexible material;

[0023] When the detection site fixing member is a finger clip-type fixing member, the part of the detection site fixing member facing the detection cavity is made of a flexible material, and the part of the detection site fixing member facing outward is made of a flexible material or a rigid material.

[0024] Further, a limiting structure is provided between the connecting end of the first light guide beam and the first flexible connecting portion, and between the connecting end of the second light guide beam and the second flexible connecting portion.

[0025] Further, the number of the limiting structures is multiple, and the multiple limiting structures are arranged along a first direction.

[0026] Further, the limiting structure includes a protrusion and a groove, and the protrusion and the groove are respectively arranged on the connecting end of the first light guide beam and the first flexible connecting portion; and the protrusion and the groove are respectively arranged on the connecting end of the second light guide beam and the second flexible connecting portion.

[0027] Further, the protrusion is an annular structure, a sector ring structure or a convex point structure in an annular array.

[0028] Further, the limiting structure is a damping member.

[0029] Further, a first bending structure is provided at the connection end of the first light guide beam, and a second bending structure is provided at the connection end of the second light guide beam.

[0030] Further, both the first bending structure and the second bending structure are L-shaped structures.

[0031] Further, when the detection part is located in the detection cavity, the first direction is perpendicular to the extending direction of the detection part.

[0032] Further, the connection ends of both the first light guide beam and the second light guide beam are rigid structures.

[0033] The inventor also provides a fixing member for the detection part. The fixing member for the detection part is provided with a first connection part and a second connection part. A first flexible connection part is provided on the first connection part, and / or a second flexible connection part is provided on the second connection part;

[0034] The first connection part and the second connection part can enclose a detection cavity, such that the first flexible connection part and the second flexible connection part extend along a first direction and are oppositely arranged, and the first direction intersects with the extending direction of the detection part.

[0035] Further, at least part of the side wall of the connection end of the first light guide beam is an arc surface structure; at least part of the side wall of the connection end of the second light guide beam is an arc surface structure.

[0036] Further, at least part of the cross-section of the first flexible connection part is circular, gourd-shaped, dumbbell-shaped, oval or fan-shaped, and at least part of the cross-section of the second flexible connection part is circular, gourd-shaped, dumbbell-shaped, oval or fan-shaped.

[0037] Further, the first flexible connection part and the second flexible connection part are through-hole structures.

[0038] Further, the first flexible connection part and the second flexible connection part are cylindrical holes.

[0039] Further, the blood oxygen probe further includes a rigid outer shell, and the rigid outer shell is wrapped outside the fixing member for the detection part;

[0040] And the rigid outer shell is provided with a first outer shell through-hole corresponding to the position of the first flexible connection part, and the rigid outer shell is provided with a second outer shell through-hole corresponding to the position of the second flexible connection part.

[0041] Further, the fixing member for the detection part is a sleeve-type fixing member, a finger clip-type fixing member or a strap-type fixing member.

[0042] Further, when the detection site fixing member is a sleeve-type fixing member or a strap-type fixing member, the detection site fixing member is made of a flexible material;

[0043] When the detection site fixing member is a finger clip-type fixing member, the part of the detection site fixing member facing the inside of the detection cavity is made of a flexible material, and the part of the detection site fixing member facing the outside is made of a flexible material or a rigid material.

[0044] Further, a limiting structure is provided on both the first flexible connecting portion and the second flexible connecting portion.

[0045] Further, the number of the limiting structures is multiple, and the multiple limiting structures are arranged along a first direction.

[0046] Further, the limiting structure is a protruding portion, a groove or a damping member.

[0047] Further, the protruding portion is an annular structure, a sector-ring structure or a convex dot structure in an annular array.

[0048] Further, when the detection part is located in the detection cavity, the first direction is perpendicular to the extending direction of the detection site.

[0049] Different from the prior art, in the above technical solution, the detection site fixing member is detachably connected to the first light guide beam through the first flexible connecting portion and detachably connected to the second light guide beam through the second flexible connecting portion. Due to the flexible characteristics of the first flexible connecting portion and the second flexible connecting portion, during the disassembly and assembly process of the first light guide beam and the second light guide beam, the first flexible connecting portion and the second flexible connecting portion will undergo flexible deformation. Even if the first light guide beam and the second light guide beam are repeatedly disassembled and assembled, it will not affect the detection site fixing member, and the detection site fixing member can still maintain the holding force with the first light guide beam and the second light guide beam. The first light guide beam is disassembled and assembled from the first flexible connecting portion along the first direction, and the second light guide beam is disassembled and assembled from the second flexible connecting portion along the first direction. During the disassembly and assembly process, the first light guide beam and the second light guide beam are not likely to interfere with the detection site, which is not only convenient for disassembly and assembly but also beneficial to improving the user experience. Description of the Drawings

[0050] Figure 1 Schematic diagram of a blood oxygen probe according to this embodiment;

[0051] Figure 2 Schematic diagram of a detection mechanism of a blood oxygen probe according to this embodiment;

[0052] Figure 3 Front view of a detection site fixing member according to this embodiment;

[0053] Figure 4 For Figure 3Cross-sectional view at A-A in [the figure];

[0054] Figure 5 Schematic diagram of the connection of a fixing member for a detection part, a first light guide beam, and a second light guide beam in this embodiment;

[0055] Figure 6 Connection state diagram of a fixing member for a detection part, a first light guide beam, and a second light guide beam in this embodiment;

[0056] Figure 7 Schematic diagram of a fixing member for a detection part fixed to a detection part in this embodiment;

[0057] Figure 8 Schematic diagram of a fixing member for a detection part being a clamping type fixing member in this embodiment;

[0058] Figure 9 Schematic diagram of a fixing member for a detection part being a strap type fixing member in this embodiment.

[0059] Explanation of reference numerals:

[0060] a, first direction;

[0061] 01, blood oxygen probe;

[0062] 10, fixing member for detection part;

[0063] 111, first connection part;

[0064] 1111, first flexible connection part;

[0065] 112, second connection part;

[0066] 1121, second flexible connection part;

[0067] 113, detection cavity;

[0068] 12, rigid housing;

[0069] 121, first housing through hole;

[0070] 122, second housing through hole;

[0071] 20, detection mechanism;

[0072] 21, housing;

[0073] 221, first light guide beam;

[0074] 2211, fixed end of the first light guide beam;

[0075] 2212, connection end of the first light guide beam;

[0076] 2213. The first bending structure;

[0077] 222. The emitting part;

[0078] 231. The second light guide beam;

[0079] 2311. The fixed end of the second light guide beam;

[0080] 2312. The connecting end of the second light guide beam;

[0081] 2313. The second bending structure;

[0082] 232. The receiving part;

[0083] 30. The limiting structure;

[0084] 31. The protruding part;

[0085] 32. The groove;

[0086] 40. The detection part. Detailed implementation manners

[0087] To describe in detail the possible application scenarios, technical principles, specific implementable solutions, achievable purposes and effects of the present application, etc., the following will be described in detail with reference to the specific examples listed and in conjunction with the accompanying drawings. The examples described herein are only used to more clearly illustrate the technical solutions of the present application, so they are only examples and cannot be used to limit the protection scope of the present application.

[0088] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of the present application. The term "embodiment" appearing in various positions in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form the corresponding implementable technical solutions.

[0089] Unless otherwise defined, the meanings of the technical terms used herein are the same as those generally understood by those skilled in the technical field to which the present application belongs; the use of the relevant terms herein is only for describing specific embodiments and is not intended to limit the present application.

[0090] In the description of the present application, the phrase "and / or" is an expression used to describe the logical relationship between objects, indicating that there can be three relationships. For example, A and / or B means: there is A, there is B, and there is both A and B at the same time. In addition, the character " / " herein generally represents an "or" logical relationship between the associated objects before and after.

[0091] In this application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantitative, primary-secondary, or sequential relationships between these entities or operations.

[0092] Without further limitation, in this application, the expressions "comprising", "including", "having", or other similar expressions used in a statement are intended to cover non-exclusive inclusion. These expressions do not exclude the possibility that there may be additional elements in the process, method, or product that includes the said elements. Thus, in a process, method, or product that includes a series of elements, it may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such process, method, or product.

[0093] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceeding", etc. are understood not to include the recited number; expressions such as "above", "below", "within", etc. are understood to include the recited number. In addition, in the description of the embodiments of this application, the meaning of "a plurality of" is two or more (including two). Similar expressions related to "many", such as "multiple groups", "multiple times", etc., are understood in this way, unless otherwise specifically defined.

[0094] In the description of the embodiments of this application, the spatially-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiment or the drawings. This is only for the convenience of describing the specific embodiments of this application or for the reader's understanding, and does not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation on the embodiments of this application.

[0095] Unless otherwise clearly specified or limited, in the description of the embodiments of this application, the terms "installed", "connected", "joined", "fixed", "set", etc. should be understood in a broad sense. For example, the said "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art to which this application pertains, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

[0096] Blood oxygen probes are widely used in non-invasive blood oxygen monitoring. This non-invasive technology can provide real-time, painless, and rapid blood oxygen measurement, and is widely used in medical, sports, sleep and other fields, providing important information for clinical monitoring and personal health management. In the MRI (Magnetic Resonance Imaging) scenario, the strong magnetic environment will interfere with the electrical signals in the transmission line. Therefore, conventional blood oxygen probes cannot be applied to the MRI scenario. Instead, optical signals are transmitted through a light guide beam to the detection site to complete the detection, thereby reducing the impact of the strong magnetic environment on the detection results. However, the cost of the light guide beam is relatively high, and the fixing parts of the detection site connected to the light guide beam need to be replaced repeatedly to be suitable for different users. To maintain the connection stability between the light guide beam and the fixing parts of the detection site, the present invention provides a flexible connection structure on the fixing parts of the detection site. During the process of disassembling and assembling the light guide beam and the fixing parts of the detection site, the flexible connection structure on the fixing parts of the detection site will undergo flexible deformation, and its connection stability with the light guide beam can still be maintained after repeated disassembly and assembly. The present invention also designs a first flexible connection part and a second flexible connection part extending along the first direction to achieve the convenience of disassembly and assembly.

[0097] Based on the above inventive concept, this application provides multiple embodiments, specifically introducing the corresponding structures of the blood oxygen probe and the fixing parts of the detection site, in order to achieve the purpose of this application.

[0098] Please refer to Figures 1 to 4 , a blood oxygen probe 01 in this embodiment includes:

[0099] A fixing part 10 of the detection site for fixing the detection site 40. The fixing part 10 of the detection site is provided with a first connection part 111 and a second connection part 112. A first flexible connection part 1111 is provided on the first connection part 111, and / or a second flexible connection part 1121 is provided on the second connection part 112;

[0100] A detection mechanism 20, the detection mechanism 20 includes a housing 21, a transmitting component and a receiving component. The transmitting component includes a first light guide beam 221 and a transmitting part 222. The fixed end 2211 of the first light guide beam is fixedly connected to the transmitting part 222, and the connecting end 2212 of the first light guide beam is detachably connected to the first flexible connection part 1111. The receiving component includes a second light guide beam 231 and a receiving part 232. The fixed end 2311 of the second light guide beam is fixedly connected to the receiving part 232, and the connecting end 2312 of the second light guide beam is detachably connected to the second flexible connection part 1121; the transmitting part 222 and the receiving part 232 are oppositely arranged in the housing 21;

[0101] The first connecting portion 111 and the second connecting portion 112 can enclose a detection cavity 113, such that the first flexible connecting portion 1111 and the second flexible connecting portion 1121 extend along a first direction and are disposed opposite to each other, and the first direction intersects with the extending direction of the detection portion 40.

[0102] When the detection portion 40 is placed in the detection cavity 113, the first light guide beam 221 is configured to transmit the optical signal emitted by the emitting portion 222 to the first flexible connecting portion 1111, and the second light guide beam 231 is configured to transmit the optical signal received by the second flexible connecting portion 1121 after passing through the detection portion 40 to the receiving portion 232, and the receiving portion 232 is configured to convert the optical signal into an electrical signal to detect blood oxygen parameters.

[0103] The skin on the finger is relatively thin, the blood vessels at the finger tip are abundant, and the temperature is relatively stable. Therefore, the detection site fixing member 10 is usually worn at the finger tip to detect the blood oxygen parameters of the human body, such as detecting the blood oxygen saturation of the human body. To meet the diverse uses of the blood oxygen probe 01, the detection site fixing member 10 can also be used on parts such as toes or the feet of infants. The detection site fixing member 10 being worn on the foot of an infant specifically means that the detection site fixing member 10 is looped around the instep and sole of the infant's foot to form a wrap around the foot, thereby fixing the infant's foot within the detection site fixing member 10 to complete the detection of blood oxygen parameters.

[0104] The detection site fixing member 10 is fixed outside the detection portion 40, and the detection site fixing member 10 is adapted to the detection portion 40, so that the detection site fixing member 10 fits onto the detection portion 40 to prevent the detection site fixing member 10 from detaching from the detection portion 40.

[0105] Preferably, a first flexible connection part 1111 is provided on the first connection part 111, and a second flexible connection part 1121 is provided on the second connection part 112. The first light guide beam 221 and the second light guide beam 231 can be detachably connected to and disconnected from the detection part fixing member 10, and the detection part fixing member 10 can be replaced to adapt to the usage requirements of different users. A first flexible connection part 1111 is provided on the first connection part 111. The first light guide beam 221 is detachably connected to the first connection part 111, realizing the detachable connection between the first light guide beam 221 and the first flexible connection part 1111, that is, realizing the detachable connection between the first light guide beam 221 and the detection part fixing member 10. The first light guide beam 221 and the first flexible connection part 1111 are repeatedly disassembled and assembled for use. The flexible characteristic of the first flexible connection part 1111 can maintain the connection strength between the first light guide beam 221 and the first flexible connection part 1111, maintain the holding force of the first flexible connection part 1111 on the first light guide beam 221, and the flexible characteristic of the first flexible connection part 1111 also helps to enhance the wrapping property of the first flexible connection part 1111 on the connection end 2212 of the first light guide beam 221, enhancing the connection reliability between the two. Or a second flexible connection part 1121 is provided on the second connection part 112. The second light guide beam 231 is detachably connected to the second connection part 112, realizing the detachable connection between the second light guide beam 231 and the second flexible connection part 1121, that is, realizing the detachable connection between the second light guide beam 231 and the detection part fixing member 10. The second light guide beam 231 and the second flexible connection part 1121 are repeatedly disassembled and assembled for use. The flexible characteristic of the second flexible connection part 1121 can maintain the connection strength between the second light guide beam 231 and the second flexible connection part 1121, maintain the holding force of the second flexible connection part 1121 on the second light guide beam 231, and the flexible characteristic of the second flexible connection part 1121 also helps to enhance the wrapping property of the second flexible connection part 1121 on the connection end 2312 of the second light guide beam 231, enhancing the connection reliability between the two.

[0106] The first light guide beam 221 and the second light guide beam 231 are usually set as flexible structures. The first light guide beam 221 and the second light guide beam 231 include an optical fiber outer sheath and an optical fiber body. The optical fiber outer sheath is usually a hollow tubular structure made of silica gel or rubber. The optical fiber outer sheath made of silica gel or rubber can facilitate adjustment, storage and connection. The optical fiber body is arranged in the optical fiber outer sheath and extends along the length direction of the optical fiber outer sheath. The optical fiber outer sheath can protect the optical fiber, has the functions of waterproofing, dustproofing, resisting external physical damage and tensile force, and can improve the reliability and service life of the optical fiber body.

[0107] The connection end 2212 of the first light guide beam and the first flexible connection part 1111 can be connected in one or more of the following forms: plug-in connection, snap connection, magnetic attraction connection, or screw connection. Similarly, the connection end 2312 of the second light guide beam and the second flexible connection part 1121 can also be connected in one or more of the following forms: plug-in connection, snap connection, magnetic attraction connection, or screw connection.

[0108] The emitting part 222 is usually selected as an LED (light emitting diode), and of course, it can also be a laser diode or a white light source; the receiving part 232 is usually selected as a PD (photodiode), and of course, it can also be a photoresistor, an optical fiber sensor, or a phototube.

[0109] The first connection part 111 and the second connection part 112 can be integrally formed into a finger sleeve structure with one end open; or the first connection part 111 and the second connection part 112 can be integrally formed into a finger clip structure with a U-shaped cross-section; or one end of the first connection part 111 is hinged to one end of the second connection part 112, and the other end of the first connection part 111 and the other end of the second connection part 112 extend in the same direction to form an openable and closable finger clip structure; or the first connection part 111 and the second connection part 112 are arranged on the same plane to form a strap structure. When the first connection part 111 and the second connection part 112 enclose the detection cavity 113, the first connection part 111 and the second connection part 112 are arranged opposite to each other, and the first flexible connection part 1111 and the second flexible connection part 1121 are arranged opposite to each other, so that the optical signal of the first flexible connection part 1111 passes through the detection part 40 and then reaches the second flexible connection part 1121.

[0110] The first direction intersects with the extending direction of the detection part 40, that is, the first direction is not parallel to the extending direction of the detection part 40. If the detection part 40 is a finger or a toe, the extending direction of the detection part 40 is the extending direction of the length of the finger or the toe, and the first direction intersects with the extending direction of the length of the finger or the toe; if the detection part 40 is a baby's foot, the extending direction of the detection part 40 is the extending direction of the sole of the foot, and the first direction intersects with the extending direction of the sole of the foot.

[0111] The first flexible connection part 1111 and the second flexible connection part 1121 are arranged opposite to each other on both sides of the detection cavity 113, so that the optical signal received by the first flexible connection part 1111 can be received by the second flexible connection part 1121 after passing through the detection part 40.

[0112] Taking the finger as an example of the detection part 40, the first flexible connection part 1111 extends along the first direction, so that the connection end 2212 of the first light guide beam is also extended along the first direction when accessing the first flexible connection part 1111. Then the access direction of the connection end 2212 of the first light guide beam is not consistent with the extension direction of the finger length, avoiding interference between the connection end 2212 of the first light guide beam and the detection part fixing member 10 or the detection part 40 during the access process, or interference between the connection end 2212 of the first light guide beam and the detection part fixing member 10 or the detection part 40 during the use process after access. Similarly, the second flexible connection part 1121 extends along the first direction, so that the connection end 2312 of the second light guide beam is also extended along the first direction when accessing the second flexible connection part 1121. Then the access direction of the connection end 2312 of the second light guide beam is not consistent with the extension direction of the finger length, avoiding interference between the connection end 2312 of the second light guide beam and the detection part fixing member 10 or the detection part 40 during the access process, or interference between the connection end 2312 of the second light guide beam and the detection part fixing member 10 or the detection part 40 during the use process after access.

[0113] In the above technical solution, the detection part fixing member 10 is detachably connected to the first light guide beam 221 through the first flexible connection part 1111 and detachably connected to the second light guide beam 231 through the second flexible connection part 1121. Due to the flexible characteristics of the first flexible connection part 1111 and the second flexible connection part 1121, the first flexible connection part 1111 and the second flexible connection part 1121 will undergo flexible deformation during the disassembly and assembly process of the first light guide beam 221 and the second light guide beam 231. Even if the first light guide beam 221 and the second light guide beam 231 are repeatedly disassembled and assembled, it will not affect the detection part fixing member 10. The detection part fixing member 10 can still maintain the holding force between the first light guide beam 221 and the second light guide beam 231, making the fixation more reliable. The first light guide beam 221 is disassembled and assembled from the first flexible connection part 1111 along the first direction, and the second light guide beam 231 is disassembled and assembled from the second flexible connection part 1121 along the first direction. During the disassembly and assembly process, the first light guide beam 221 and the second light guide beam 231 are not likely to interfere with the detection part 40, which is not only convenient for disassembly and assembly but also beneficial to improving the user experience.

[0114] In some embodiments, the connecting end 2212 of the first light guide beam and the first flexible connecting portion 1111 are rotatably connected, and / or the connecting end 2312 of the second light guide beam and the second flexible connecting portion 1121 are rotatably connected. After the connecting end 2212 of the first light guide beam is connected to the first flexible connecting portion 1111, the connecting end 2212 of the first light guide beam can rotate around the first flexible connecting portion 1111. The connecting end 2212 of the first light guide beam is connected to the first flexible connecting portion 1111 along a first direction, and the first direction intersects with the extending direction of the detection part 40, so that the connecting end 2212 of the first light guide beam is not likely to interfere with the detection part 40 even during the rotation process, and a certain degree of angle adjustment can be achieved. Especially in the MRI scenario, the rotatable connection between the connecting end 2212 of the first light guide beam and the detection part fixing member 10 can flexibly adapt to this usage scenario. No matter which direction the detection part 40 of the user faces, after the detection part 40 of the user wears the detection part fixing member 10, the angle between the connecting end 2212 of the first light guide beam and the first flexible connecting portion 1111 can be adjusted to obtain a comfortable wearing experience, and by adjusting the angle between the connecting end 2212 of the first light guide beam and the first flexible connecting portion 1111, the bending and curling of the first light guide beam 221 can be reduced, effectively protecting the optical fiber body in the first light guide beam 221 and prolonging the service life of the optical fiber body. Similarly, after the connecting end 2312 of the second light guide beam is connected to the second flexible connecting portion 1121, the connecting end 2312 of the second light guide beam can rotate around the second flexible connecting portion 1121. The connecting end 2312 of the second light guide beam is connected to the second flexible connecting portion 1121 along a first direction, and the first direction intersects with the extending direction of the detection part 40, so that the connecting end 2312 of the second light guide beam is not likely to interfere with the detection part 40 even during the rotation process, and a certain degree of angle adjustment can be achieved. Especially in the MRI scenario, the rotatable connection between the connecting end 2312 of the second light guide beam and the detection part fixing member 10 can flexibly adapt to this usage scenario. No matter which direction the detection part 40 of the user faces, after the detection part 40 of the user wears the detection part fixing member 10, the angle between the connecting end 2312 of the second light guide beam and the second flexible connecting portion 1121 can be adjusted to obtain a comfortable wearing experience, and by adjusting the angle between the connecting end 2312 of the second light guide beam and the second flexible connecting portion 1121, the bending and curling of the second light guide beam 231 can be reduced, effectively protecting the optical fiber body in the second light guide beam 231 and prolonging the service life of the optical fiber body. The connecting end 2212 of the first light guide beam and the first flexible connecting portion 1111 are rotatably connected, and the connecting end 2312 of the second light guide beam and the second flexible connecting portion 1121 are rotatably connected. After the detection part 40 is worn in the detection cavity 113, the orientation of the light guide beam on the detection part fixing member 10 can be rotationally adjusted at two opposite positions of the detection cavity 113, which is more flexible and comfortable.

[0115] In some more preferred embodiments, when the connecting end 2212 of the first light guiding beam is rotatably connected to the first flexible connecting portion 1111, at least a part of the side wall of the connecting end 2212 of the first light guiding beam is an arc surface structure, and / or at least a part of the side wall of the first flexible connecting portion 1111 is an arc surface structure, and the connecting end 2212 of the first light guiding beam and the first flexible connecting portion 1111 are rotatably connected through the arc surface structure.

[0116] To achieve the rotatable connection between the connecting end 2212 of the first light guiding beam and the first flexible connecting portion 1111, it only needs to set a part of the arc surface structure on the contact surfaces of the two. It should be noted here that the arc surface structure refers to a structure with a curved surface shape, and its surface presents characteristics of being curved and smooth. The arc surface structure can be a part of a circular arc surface or an elliptical arc surface, or it can also be a part of other curved surface shapes. The purpose of setting the arc surface structure is to enable the connecting end 2212 of the first light guiding beam and the first flexible connecting portion 1111 to be continuous and smooth during the rotation process. The arc surface structure can be set on the connecting end 2212 of the first light guiding beam, and the first flexible connecting portion 1111 rotates along the arc surface structure on the connecting end 2212 of the first light guiding beam; or the arc surface structure is set on the first flexible connecting portion 1111, and the connecting end 2212 of the first light guiding beam rotates along the arc surface structure on the first flexible connecting portion 1111; or arc surface structures are set on both the connecting end 2212 of the first light guiding beam and the first flexible connecting portion 1111, and the arc surface structures of the two are attached and move relative to each other to achieve the rotation of the two.

[0117] When the connecting end 2312 of the second light guiding beam is rotatably connected to the second flexible connecting portion 1121, at least a part of the side wall of the connecting end 2312 of the second light guiding beam is an arc surface structure, and / or at least a part of the side wall of the second flexible connecting portion 1121 is an arc surface structure, and the connecting end 2312 of the second light guiding beam and the second flexible connecting portion 1121 are rotatably connected through the arc surface structure.

[0118] To achieve the rotatable structure between the connecting end 2312 of the second light guide beam and the second flexible connecting portion 1121, it only needs to have a partial arc surface structure on the contact surfaces of the two. Here, it should be noted that the arc surface structure refers to a structure with a curved surface shape, and its surface presents a curved and smooth feature. The arc surface structure can be a part of a circular arc surface or an elliptical arc surface, or a part of other curved surface shapes. The purpose of setting the arc surface structure is to enable the connecting end 2312 of the second light guide beam and the second flexible connecting portion 1121 to be continuous and smooth during the rotation process. The arc surface structure can be set on the connecting end 2312 of the second light guide beam, and the second flexible connecting portion 1121 rotates along the arc surface structure on the connecting end 2312 of the second light guide beam; or the arc surface structure is set on the second flexible connecting portion 1121, and the connecting end 2312 of the second light guide beam rotates along the arc surface structure on the second flexible connecting portion 1121; or arc surface structures are set on both the connecting end 2312 of the second light guide beam and the second flexible connecting portion 1121, and the arc surface structures of the two are in contact and move relative to each other to achieve the rotation of the two.

[0119] In some preferred embodiments, at least a part of the cross-section of the first flexible connecting portion 1111 is circular, gourd-shaped, dumbbell-shaped, elliptical or fan-shaped. The first flexible connecting portion 1111 with a cross-section of circular, gourd-shaped, dumbbell-shaped, elliptical or fan-shaped has an arc surface structure, that is, the first flexible connecting portion 1111 with an arc surface structure has a cross-section of circular, gourd-shaped, dumbbell-shaped, elliptical or fan-shaped. After the first light guide beam 221 is connected to the first flexible connecting portion 1111, the rotation between the two is achieved through the part of the first flexible connecting portion 1111 with a cross-section of circular, gourd-shaped, dumbbell-shaped, elliptical or fan-shaped. In certain embodiments, along the first direction, the cross-section of other parts of the first flexible connecting portion 1111 can be other shapes, and these other parts can guide the first light guide beam 221, and the rotation function is achieved by the part with a cross-section of circular, gourd-shaped, dumbbell-shaped, elliptical or fan-shaped.

[0120] At least a part of the cross-section of the second flexible connecting portion 1121 is circular, gourd-shaped, dumbbell-shaped, elliptical or fan-shaped. The second flexible connecting portion 1121 with a cross-section of circular, gourd-shaped, dumbbell-shaped, elliptical or fan-shaped has an arc surface structure, that is, the second flexible connecting portion 1121 with an arc surface structure has a cross-section of circular, gourd-shaped, dumbbell-shaped, elliptical or fan-shaped. After the second light guide beam 231 is connected to the second flexible connecting portion 1121, the rotation between the two is achieved through the part of the second flexible connecting portion 1121 with a cross-section of circular, gourd-shaped, dumbbell-shaped, elliptical or fan-shaped. In certain embodiments, along the first direction, the cross-section of other parts of the second flexible connecting portion 1121 can be other shapes, and these other parts can guide the second light guide beam 231, and the rotation function is achieved by the part with a cross-section of circular, gourd-shaped, dumbbell-shaped, elliptical or fan-shaped.

[0121] In some preferred embodiments, the cross-section of the connecting end 2212 of the first light guide beam is circular, elliptical or fan-shaped. The first light guide beam 221 with a circular, elliptical or fan-shaped cross-section has an arc surface structure, that is, the first light guide beam 221 has an arc surface structure with a circular, elliptical or fan-shaped cross-section. After the first light guide beam 221 is connected to the first flexible connecting portion 1111, rotation between the two is achieved through the portion of the first light guide beam 221 with a circular, elliptical or fan-shaped cross-section. The cross-section of the connecting end 2312 of the second light guide beam is circular, elliptical or fan-shaped. The second light guide beam 231 with a circular, elliptical or fan-shaped cross-section has an arc surface structure, that is, the second light guide beam 231 has an arc surface structure with a circular, elliptical or fan-shaped cross-section. After the second light guide beam 231 is connected to the second flexible connecting portion 1121, rotation between the two is achieved through the portion of the second light guide beam 231 with a circular, elliptical or fan-shaped cross-section.

[0122] In some embodiments, the first flexible connecting portion 1111 and the second flexible connecting portion 1121 are through-hole structures. After the first connecting portion 111 and the second connecting portion 112 can enclose a detection cavity 113, both the first flexible connecting portion 1111 and the second flexible connecting portion 1121 are in communication with the detection cavity 113. The central axis directions of the first flexible connecting portion 1111 and the second flexible connecting portion 1121 extend along the first direction. The first light guide beam 221 is inserted into the first flexible connecting portion 1111 along the first direction, and the first light guide beam 221 is in communication with the detection cavity 113. The second light guide beam 231 is inserted into the second flexible connecting portion 1121 along the first direction, and the second light guide beam 231 is in communication with the detection cavity 113. The optical signal conducted by the first light guide beam 221 is input into the detection cavity 113 from the first flexible connecting portion 1111, and the optical signal after passing through the detection portion 40 is output from the second light guide beam 231. In some embodiments, in order to improve the comfort of the detection portion 40 in the detection cavity 113, a light-transmitting film is provided at one end of the first flexible connecting portion 1111 facing the detection cavity 113. Similarly, a light-transmitting film is provided at one end of the second flexible connecting portion 1121 facing the detection cavity 113, which will form a complete inner wall of the detection cavity 113 and improve the wearing comfort of the detection portion fixing member. In addition, the provided light-transmitting film can also limit the insertion depth of the first light guide beam 221 and the second light guide beam 231 to prevent the first light guide beam 221 and the second light guide beam 231 from being inserted into the detection cavity 113.

[0123] In some preferred embodiments, the first flexible connection portion 1111 is a cylindrical hole, the connection end 2212 of the first light guide beam is cylindrical, the central axis of the first flexible connection portion 1111 extends along the first direction. After the first light guide beam 221 is inserted into the first flexible connection portion 1111, the central axis of the first light guide beam 221 also extends along the first direction. The connection end 2212 of the first light guide beam should be adapted to the first flexible connection portion 1111. A tight fit exists between the first flexible connection portion 1111 and the first light guide beam 221, and the tight fit relationship therebetween is achieved through the flexible characteristic of the first flexible connection portion 1111, that is, when the first light guide beam 221 is inserted into the first flexible connection portion 1111, the first flexible connection portion 1111 will deform to tightly wrap around the outside of the connection end 2212 of the first light guide beam, and the connection is fixed reliably. The second flexible connection portion 1121 is a cylindrical hole, the connection end 2312 of the second light guide beam is cylindrical, the central axis of the second flexible connection portion 1121 extends along the first direction. After the second light guide beam 231 is inserted into the second flexible connection portion 1121, the central axis of the second light guide beam 231 also extends along the first direction. The connection end 2312 of the second light guide beam should be adapted to the second flexible connection portion 1121. A tight fit exists between the second flexible connection portion 1121 and the second light guide beam 231, and the tight fit relationship therebetween is achieved through the flexible characteristic of the second flexible connection portion 1121, that is, when the second light guide beam 231 is inserted into the second flexible connection portion 1121, the second flexible connection portion 1121 will deform to tightly wrap around the outside of the connection end 2312 of the second light guide beam, and the connection is fixed reliably.

[0124] Such as Figure 8As shown, in some embodiments, the blood oxygen probe 01 further includes a rigid housing 12. The rigid housing 12 is wrapped outside the detection site fixing member 10. And at the position corresponding to the first flexible connection portion 1111, the rigid housing 12 is provided with a first housing through hole 121. At the position corresponding to the second flexible connection portion 1121, the rigid housing 12 is provided with a second housing through hole 122. The rigidity of the rigid housing 12 should be defined as that the material for making the rigid housing 12 has higher strength and hardness relative to the material for making the detection site fixing member 10, and has stronger mechanical properties such as tensile strength, compressive strength and hardness. Or the rigidity of the rigid housing 12 should be defined as that the material for making the rigid housing 12 has higher strength and hardness relative to the materials for making the first flexible connection portion 1111 and the second flexible connection portion 1121, and has stronger mechanical properties such as tensile strength, compressive strength and hardness. Specifically, the rigid housing 12 can be made of one or more of hard glue, metal or plastic. The first light guide beam 221 passes through the first housing through hole 121 on the rigid housing 12 and then is connected to the first flexible connection portion 1111. The second light guide beam 231 passes through the second housing through hole 122 on the rigid housing 12 and then is connected to the second flexible connection portion 1121. The cross-sectional shapes of the first housing through hole 121 and the second housing through hole 122 can specifically be circular, oval, polygonal, or other regular or irregular shapes.

[0125] In some preferred embodiments, there is a clearance fit between the connection end 2212 of the first housing through hole 121 and the first light guide beam, and there is a clearance fit between the connection end 2312 of the second housing through hole 122 and the second light guide beam. That is, the cross-sectional area of the first housing through hole 121 is larger than the cross-sectional area of the connection end 2212 of the first light guide beam. Specifically, if the cross-sections of the first housing through hole 121 and the connection end 2212 of the first light guide beam are both circular, then the diameter of the cross-section of the first housing through hole 121 is larger than the diameter of the cross-section of the connection end 2212 of the first light guide beam, so that the connection end 2212 of the first light guide beam can pass through the first housing through hole 121 smoothly and be connected to the first flexible connection portion 1111. Similarly, the cross-sectional area of the second housing through hole 122 is larger than the cross-sectional area of the connection end 2312 of the second light guide beam. Specifically, if the cross-sections of the second housing through hole 122 and the connection end 2312 of the second light guide beam are both circular, then the diameter of the cross-section of the second housing through hole 122 is larger than the diameter of the cross-section of the connection end 2312 of the second light guide beam, so that the connection end 2312 of the second light guide beam can pass through the second housing through hole 122 smoothly and be connected to the second flexible connection portion 1121.

[0126] In some embodiments, the detection site fixing member 10 is a sleeve-type fixing member, a clamping-type fixing member or a strap-type fixing member. Such as Figures 5 - 7As shown, when the detection site fixing member 10 is a sleeve-type fixing member, the first connection portion 111 and the second connection portion 112 correspondingly are two relatively arranged portions of the sleeve-type fixing member, and the detection cavity 113 is the inner cavity of the sleeve. The sleeve-type fixing member can be directly sleeved outside the detection site 40, which is convenient to use and simple to operate. As Figure 8 shown, when the detection site fixing member 10 is a clamping-type fixing member, the first connection portion 111 and the second connection portion 112 correspondingly are the clip pieces of the clamping-type fixing member arranged oppositely, and the detection cavity 113 is the space between the two relatively arranged clip pieces. The clamping-type fixing member can be fixed quickly and adjusted flexibly. As Figure 9 shown, when the detection site fixing member 10 is a strap-type fixing member, the first connection portion 111 and the second connection portion 112 correspondingly are different positions in the extending direction of the strap length. After the first connection portion 111 and the second connection portion 112 are enclosed, they are arranged oppositely and form the detection cavity 113. The strap-type fixing member has strong adjustability and can be applied to more detection sites 40.

[0127] In some preferred embodiments, when the detection site fixing member 10 is a sleeve-type fixing member or a strap-type fixing member, the detection site fixing member 10 is made of a flexible material. Specifically, the detection site fixing member 10 can be an integrally formed soft rubber sleeve, or the detection site 40 includes an integrally formed hard rubber in the inner layer and an integrally formed soft rubber in the outer layer; the fixing member can be made of materials such as silica gel or rubber. When the detection site fixing member 10 made of a gelatinous material is in use, it can provide good tightness, adaptability and adhesion during the connection with the first light guide beam 221 and the second light guide beam 231, and improve the connection reliability between the detection site fixing member 10 and the first light guide beam 221 and the second light guide beam 231. When the detection site fixing member 10 is a strap-type fixing member, the detection site fixing member 10 can also be made of nylon, polyester fiber, polypropylene, polyamide or fabric, and is configured with a first flexible connection portion 1111 and a second flexible connection portion 1121 made of an acute angle or rubber material.

[0128] When the detection site fixing member 10 is a finger clip type fixing member, the part of the detection site fixing member 10 facing the inside of the detection cavity 113 is made of a flexible material, and the part of the detection site fixing member 10 facing the outside is made of a flexible material or a rigid material. That is, the detection site fixing member 10 includes an inner layer of the detection site fixing member 10 and an outer layer of the detection site fixing member 10. The hardness of the outer layer of the detection site fixing member 10 should be greater than that of the inner layer of the detection site fixing member 10. The inner layer of the detection site fixing member 10 is used to contact the detection site 40, and the inner layer of the detection site fixing member 10 made of soft rubber can improve the use comfort. The first flexible connection portion 1111 and the second flexible connection portion 1121 are arranged on the inner layer of the detection site fixing member 10; when the outer layer of the detection site fixing member 10 is also made of a flexible material, the first flexible connection portion 1111 and the second flexible connection portion 1121 are arranged on the inner layer and the outer layer of the detection site fixing member 10.

[0129] As Figures 5 to 9 shown, in some embodiments, a limiting structure 30 is provided between the connection end 2212 of the first light guide beam and the first flexible connection portion 1111, and between the connection end 2312 of the second light guide beam and the second flexible connection portion 1121. By providing the limiting structure 30 between the connection end 2212 of the first light guide beam and the first flexible connection portion 1111, the installation position of the first light guide beam 221 on the first flexible connection portion 1111 can be effectively controlled and limited, and the connection stability between the two can be maintained; similarly, by providing the limiting structure 30 between the connection end 2312 of the second light guide beam and the second flexible connection portion 1121, the installation position of the second light guide beam 231 on the second flexible connection portion 1121 can be effectively controlled and limited, and the connection stability between the two can be maintained.

[0130] In some preferred embodiments, the number of the limiting structures 30 is multiple, and the multiple limiting structures 30 are arranged along the first direction. When the limiting structure 30 is disposed on the first flexible connecting portion 1111, the multiple limiting structures 30 are arranged along the extending direction of the first flexible connecting portion 1111. When the limiting structure 30 is disposed on the connecting end 2212 of the first light guide beam, the multiple limiting structures 30 are arranged on the connecting end 2212 of the first light guide beam along the first direction, or the limiting structure 30 is arranged on the first flexible connecting portion 1111 and the connecting end 2212 of the first light guide beam in the above form. The limiting structures 30 are equidistantly arranged. Arranging multiple limiting structures 30 can enhance the connection stability between the connecting end 2212 of the first light guide beam and the first flexible connecting portion 1111. Similarly, when the limiting structure 30 is disposed on the second flexible connecting portion 1121, the multiple limiting structures 30 are arranged along the extending direction of the second flexible connecting portion 1121. When the limiting structure 30 is disposed on the connecting end 2312 of the second light guide beam, the multiple limiting structures 30 are arranged on the connecting end 2312 of the second light guide beam along the first direction, or the limiting structure 30 is arranged on the second flexible connecting portion 1121 and the connecting end 2312 of the second light guide beam in the above form. The limiting structures 30 are equidistantly arranged. Arranging multiple limiting structures 30 can enhance the connection stability between the connecting end 2312 of the second light guide beam and the second flexible connecting portion 1121.

[0131] As Figures 5 to 9 shown, in some preferred embodiments, the limiting structure 30 includes a protrusion 31 and a groove 32. The protrusion 31 and the groove 32 are respectively disposed on the connecting end 2212 of the first light guide beam and the first flexible connecting portion 1111. Specifically, the protrusion 31 can be disposed on the connecting end 2212 of the first light guide beam, and the groove 32 can be disposed on the first flexible connecting portion 1111, or the protrusion 31 can be disposed on the first flexible connecting portion 1111, and the groove 32 can be disposed on the connecting end 2212 of the first light guide beam. The first light guide beam 221 is connected to the first flexible connecting portion 1111, and the protrusion 31 is snapped into the groove 32 to realize the connection limit between the first light guide beam 221 and the first flexible connecting portion 1111. Similarly, the protrusion 31 and the groove 32 are respectively disposed on the connecting end 2312 of the second light guide beam and the second flexible connecting portion 1121. Specifically, the protrusion 31 can be disposed on the connecting end 2312 of the second light guide beam, and the groove 32 can be disposed on the second flexible connecting portion 1121, or the protrusion 31 can be disposed on the second flexible connecting portion 1121, and the groove 32 can be disposed on the connecting end 2312 of the second light guide beam. The second light guide beam 231 is connected to the second flexible connecting portion 1121, and the protrusion 31 is snapped into the groove 32 to realize the connection limit between the second light guide beam 231 and the second flexible connecting portion 1121.

[0132] In some preferred embodiments, the protrusion 31 is an annular structure, a sector-annular structure, or a bump structure in an annular array. After the annular structure is divided by two straight lines passing through its center, two sector-annular structures can be obtained, that is, the sector-annular structure is a part of the annular structure, specifically, it can be a semi-annular shape or a quarter-annular shape. The bump structure can specifically be a spherical bump, a hemispherical bump, a cylindrical bump, a conical bump, or a bump structure with any shape. The annular structure, the sector-annular structure, or the bump structure in the annular array protrudes outside the hole wall of the first flexible connection portion 1111 / the connection end 2212 of the first light guide beam; similarly, the annular structure, the sector-annular structure, or the bump structure in the annular array protrudes outside the hole wall of the second flexible connection portion 1121 / the connection end 2312 of the second light guide beam.

[0133] In some preferred embodiments, the limiting structure 30 is a damping member. The damping member is independently arranged from the connection end 2212 of the first light guide beam, the first flexible connection portion 1111, the connection end 2312 of the second light guide beam, and the second flexible connection portion 1121. The damping member can specifically be a rubber ring, a silica gel ring, a plastic ring, or the like, which can enhance the friction between the connection end 2212 of the first light guide beam and the first flexible connection portion 1111, or enhance the friction between the connection end 2312 of the second light guide beam and the second flexible connection portion 1121.

[0134] As Figures 5 to 9 shown, in some embodiments, the connection end 2212 of the first light guide beam is provided with a first bending structure 2213, and the connection end 2312 of the second light guide beam is provided with a second bending structure 2313. By changing the direction of the end of the connection end 2212 of the first light guide beam through the first bending structure 2213, that is, the direction of the end of the connection end 2212 of the first light guide beam can be made different from the length extension direction of the first light guide beam 221. The end of the connection end 2212 of the first light guide beam is used to access the first flexible connection portion 1111 from the first direction, which can reduce the size of the assembled blood oxygen probe 01 in the first direction, and also make the first light guide beam 221 in an extended state in its length extension direction, avoiding bending of the first light guide beam 221 in its length extension direction. Similarly, by changing the direction of the end of the connection end 2312 of the second light guide beam through the second bending structure 2313, that is, the direction of the end of the connection end 2312 of the second light guide beam can be made different from the length extension direction of the second light guide beam 231. The end of the connection end 2312 of the second light guide beam is used to access the second flexible connection portion 1121 from the first direction, which can reduce the size of the assembled blood oxygen probe 01 in the first direction, and also make the second light guide beam 231 in an extended state in its length extension direction, avoiding bending of the second light guide beam 231 in its length extension direction.

[0135] In some preferred embodiments, both the first bending structure 2213 and the second bending structure 2313 are L-shaped structures, that is, the two bent portions of the first bending structure 2213 are perpendicular to each other, and the two bent portions of the second bending structure 2313 are perpendicular to each other. When the connection end 2212 of the first light guide beam is inserted into the through-hole-shaped first flexible connection portion 1111, the L-shaped first bending structure 2213 facilitates the user to apply force for insertion and extraction; similarly, when the connection end 2312 of the second light guide beam is inserted into the through-hole-shaped second flexible connection portion 1121, the L-shaped second bending structure 2313 facilitates the user to apply force for insertion and extraction.

[0136] In some preferred embodiments, when the detection part 40 is placed in the detection cavity 113, the first direction is perpendicular to the extension direction of the detection part 40. That is, the connection end 2212 of the first light guide beam is vertically inserted into the first flexible connection portion 1111. If the first flexible connection portion 1111 is a through-hole structure, the connection end 2212 of the first light guide beam is vertically inserted into the first flexible connection portion 1111, and the connection end 2312 of the second light guide beam is vertically inserted into the second flexible connection portion 1121. If the second flexible connection portion 1121 is a through-hole structure, the connection end 2312 of the second light guide beam is vertically inserted into the second flexible connection portion 1121. The optical signal of the first light guide beam 221 will vertically pass through the detection part 40 and then vertically output from the second flexible connection portion 1121 to the second light guide beam 231. The insertion depth of the connection end 2212 of the first light guide beam and the connection end 2312 of the second light guide beam does not affect the transmission of the optical signal, which helps to improve the detection accuracy of blood oxygen parameters; and allowing the optical signal to vertically pass through the detection part 40 can enable most of the optical signals to pass through the detection part 40 and be received by the second light guide beam 231, effectively reducing light loss and also improving the detection accuracy of blood oxygen parameters. In the embodiment provided with the L-shaped first bending structure 2213, one of the bent portions (the end of the connection end 2212 of the first light guide beam) is vertically inserted into the first flexible connection portion 1111, and the other bent portion extends along the length extension direction of the first light guide beam 221 to avoid bending damage. Similarly, in the embodiment provided with the L-shaped second bending structure 2313, one of the bent portions (the end of the connection end 2312 of the second light guide beam) is vertically inserted into the second flexible connection portion 1121, and the other bent portion extends along the length extension direction of the second light guide beam 231 to avoid bending damage.

[0137] In some embodiments, the connecting ends 2212 of the first light guiding beam and the connecting ends 2312 of the second light guiding beam are both rigid structures. The material used to make the connecting ends 2212 of the first light guiding beam has higher strength and hardness compared to the materials used to make the first flexible connecting portion 1111 and other parts of the first light guiding beam 221, and has stronger mechanical properties such as tensile strength, compressive strength, and hardness. For example, it can be made of one or more materials such as hard glue, metal, or plastic. During the process of disassembling and assembling the first light guiding beam 221, the user holds the connecting end 2212 of the first light guiding beam and applies an outward force along the first direction to separate the connecting end 2212, which is convenient for disassembly and assembly. The material used to make the connecting ends 2312 of the second light guiding beam has higher strength and hardness compared to the materials used to make the second flexible connecting portion 1121 and other parts of the second light guiding beam 231, and has stronger mechanical properties such as tensile strength, compressive strength, and hardness. For example, it can be made of one or more materials such as hard glue, metal, or plastic. During the process of disassembling and assembling the second light guiding beam 231, the user holds the connecting end 2312 of the second light guiding beam and applies an outward force along the first direction to separate the connecting end 2312, which is convenient for disassembly and assembly.

[0138] The inventor also provides a detection site fixing member 10, which is provided with a first connecting portion 111 and a second connecting portion 112. A first flexible connecting portion 1111 is provided on the first connecting portion 111, and / or a second flexible connecting portion 1121 is provided on the second connecting portion 112;

[0139] The first connecting portion 111 and the second connecting portion 112 can enclose a detection cavity 113, such that the first flexible connecting portion 1111 and the second flexible connecting portion 1121 extend along a first direction and are oppositely arranged, and the first direction intersects with the extending direction of the detection site 40.

[0140] The skin on the finger is relatively thin, the blood vessels at the finger tip are rich, and the temperature is relatively stable. Therefore, the detection site fixing member 10 is usually worn on the finger tip to detect the blood oxygen parameters of the human body, such as detecting the blood oxygen saturation of the human body. To meet the diverse uses of the blood oxygen probe 01, the detection site fixing member 10 can also be used on other parts such as the toes or the feet of infants. When the detection site fixing member 10 is worn on the feet of an infant, it specifically means that the detection site fixing member 10 is looped around the instep and sole of the infant's foot to form a wrap around the foot, thereby fixing the infant's foot within the detection site fixing member 10 to complete the detection of blood oxygen parameters.

[0141] The detection site fixing member 10 is fixed outside the detection site 40, and the detection site fixing member 10 is adapted to the detection site 40, so that the detection site fixing member 10 fits onto the detection site 40 to prevent the detection site fixing member 10 from detaching from the detection site 40.

[0142] Preferably, a first flexible connecting portion 1111 is provided on the first connecting portion 111, and a second flexible connecting portion 1121 is provided on the second connecting portion 112. The first light guide beam 221 and the second light guide beam 231 can be repeatedly disassembled and assembled with the detection site fixing member 10, and the detection site fixing member 10 can be replaced to adapt to the usage requirements of different users. A first flexible connecting portion 1111 is provided on the first connecting portion 111. The first light guide beam 221 is detachably connected to the first connecting portion 111, realizing the detachable connection between the first light guide beam 221 and the first flexible connecting portion 1111, that is, realizing the detachable connection between the first light guide beam 221 and the detection site fixing member 10. The first light guide beam 221 and the first flexible connecting portion 1111 are repeatedly disassembled and assembled for use. The flexible characteristic of the first flexible connecting portion 1111 can maintain the connection strength between the first light guide beam 221 and the first flexible connecting portion 1111, maintain the holding force of the first flexible connecting portion 1111 on the first light guide beam 221, and the flexible characteristic of the first flexible connecting portion 1111 also helps to enhance the wrapping property of the first flexible connecting portion 1111 on the connecting end 2212 of the first light guide beam, enhancing the connection reliability between the two. Or a second flexible connecting portion 1121 is provided on the second connecting portion 112. The second light guide beam 231 is detachably connected to the second connecting portion 112, realizing the detachable connection between the second light guide beam 231 and the second flexible connecting portion 1121, that is, realizing the detachable connection between the second light guide beam 231 and the detection site fixing member 10. The second light guide beam 231 and the second flexible connecting portion 1121 are repeatedly disassembled and assembled for use. The flexible characteristic of the second flexible connecting portion 1121 can maintain the connection strength between the second light guide beam 231 and the second flexible connecting portion 1121, maintain the holding force of the second flexible connecting portion 1121 on the second light guide beam 231, and the flexible characteristic of the second flexible connecting portion 1121 also helps to enhance the wrapping property of the second flexible connecting portion 1121 on the connecting end 2312 of the second light guide beam, enhancing the connection reliability between the two.

[0143] The first connecting portion 111 and the second connecting portion 112 can be integrally formed into a finger sleeve structure with one end open; or the first connecting portion 111 and the second connecting portion 112 can be integrally formed into a finger clip structure with a U-shaped cross-section; or one end of the first connecting portion 111 is hinged to one end of the second connecting portion 112, and the other end of the first connecting portion 111 and the other end of the second connecting portion 112 extend in the same direction to form an openable and closable finger clip structure; or the first connecting portion 111 and the second connecting portion 112 are arranged on the same plane to form a strap structure. When the first connecting portion 111 and the second connecting portion 112 enclose the detection cavity 113, the first connecting portion 111 and the second connecting portion 112 are arranged opposite to each other, and the first flexible connecting portion 1111 and the second flexible connecting portion 1121 are arranged opposite to each other, so that the optical signal of the first flexible connecting portion 1111 reaches the second flexible connecting portion 1121 after passing through the detection site 40.

[0144] The first direction intersects with the extending direction of the detection part 40, that is, the first direction is not parallel to the extending direction of the detection part 40. When the detection part 40 is a finger or a toe, the extending direction of the detection part 40 is the extending direction of the length of the finger or toe, and the first direction intersects with the extending direction of the length of the finger or toe; when the detection part 40 is a baby's foot, the extending direction of the detection part 40 is the extending direction of the sole of the foot, and the first direction intersects with the extending direction of the sole of the foot.

[0145] The first flexible connecting part 1111 and the second flexible connecting part 1121 are oppositely arranged on both sides of the detection cavity 113, so that the optical signal received by the first flexible connecting part 1111 can be received by the second flexible connecting part 1121 after passing through the detection part 40.

[0146] Taking the detection part 40 as a finger as an example, the first flexible connecting part 1111 extends along the first direction, so that the direction in which the connecting end 2212 of the first light guide beam is connected to the first flexible connecting part 1111 also extends along the first direction. Then, the direction in which the connecting end 2212 of the first light guide beam is connected will not be consistent with the extending direction of the finger length, avoiding interference between the connecting end 2212 of the first light guide beam and the detection part fixing member 10 or the detection part 40 during the connection process, or interference between the connecting end 2212 of the first light guide beam and the detection part fixing member 10 or the detection part 40 during the subsequent use process. Similarly, the second flexible connecting part 1121 extends along the first direction, so that the direction in which the connecting end 2312 of the second light guide beam is connected to the second flexible connecting part 1121 also extends along the first direction. Then, the direction in which the connecting end 2312 of the second light guide beam is connected will not be consistent with the extending direction of the finger length, avoiding interference between the connecting end 2312 of the second light guide beam and the detection part fixing member 10 or the detection part 40 during the connection process, or interference between the connecting end 2312 of the second light guide beam and the detection part fixing member 10 or the detection part 40 during the subsequent use process.

[0147] In the above technical solution, the detection site fixing member 10 is detachably connected to the first light guide beam 221 through the first flexible connection portion 1111 and is detachably connected to the second light guide beam 231 through the second flexible connection portion 1121. Due to the flexible characteristics of the first flexible connection portion 1111 and the second flexible connection portion 1121, during the disassembly and assembly process of the first light guide beam 221 and the second light guide beam 231, the first flexible connection portion 1111 and the second flexible connection portion 1121 will undergo flexible deformation. Even if the first light guide beam 221 and the second light guide beam 231 are repeatedly disassembled and assembled, it will not affect the detection site fixing member 10. The detection site fixing member 10 can still maintain the holding force between it and the first light guide beam 221 and the second light guide beam 231. The detection site fixing member 10 provided by this solution has the advantages of reliable connection and not being easily damaged. The first light guide beam 221 is disassembled and assembled from the first flexible connection portion 1111 along the first direction, and the second light guide beam 231 is disassembled and assembled from the second flexible connection portion 1121 along the first direction. During the disassembly and assembly process, the first light guide beam 221 and the second light guide beam 231 are not easily interfered with the detection site 40, which is not only convenient for disassembly and assembly but also beneficial to improving the user experience.

[0148] In some embodiments, at least a part of the side wall of the connecting end 2212 of the first light guide beam is an arc surface structure; at least a part of the side wall of the connecting end 2312 of the second light guide beam is an arc surface structure.

[0149] To achieve the rotatable structure between the connecting end 2212 of the first light guide beam and the first flexible connection portion 1111, it only needs to have a partial arc surface structure on the contact surfaces of the two. Here, it should be noted that the arc surface structure refers to a curved surface structure, whose surface presents a curved and smooth feature. The arc surface structure can be a part of a circular arc surface or an elliptical arc surface, or a part of other curved surface shapes. The purpose of setting the arc surface structure is to enable the connecting end 2212 of the first light guide beam and the first flexible connection portion 1111 to be continuous and smooth during the rotation process. The arc surface structure is provided on the first flexible connection portion 1111, and the connecting end 2212 of the first light guide beam rotates along the arc surface structure on the first flexible connection portion 1111. Similarly, to achieve the rotatable structure between the connecting end 2312 of the second light guide beam and the second flexible connection portion 1121, it only needs to have a partial arc surface structure on the contact surfaces of the two. Here, it should be noted that the arc surface structure refers to a curved surface structure, whose surface presents a curved and smooth feature. The arc surface structure can be a part of a circular arc surface or an elliptical arc surface, or a part of other curved surface shapes. The purpose of setting the arc surface structure is to enable the connecting end 2312 of the second light guide beam and the second flexible connection portion 1121 to be continuous and smooth during the rotation process. The arc surface structure is provided on the second flexible connection portion 1121, and the connecting end 2312 of the second light guide beam rotates along the arc surface structure on the second flexible connection portion 1121.

[0150] In a preferred embodiment, at least a part of the cross-section of the first flexible connecting portion 1111 is circular, calabash-shaped, dumbbell-shaped, oval or fan-shaped. The first flexible connecting portion 1111 with a cross-section being circular, calabash-shaped, dumbbell-shaped, oval or fan-shaped has an arc surface structure, that is, the first flexible connecting portion 1111 having an arc surface structure has a cross-section being circular, calabash-shaped, dumbbell-shaped, oval or fan-shaped. After the first light guide beam 221 is connected to the first flexible connecting portion 1111, rotation therebetween is achieved through the portion of the first flexible connecting portion 1111 with a cross-section being circular, calabash-shaped, dumbbell-shaped, oval or fan-shaped. In some embodiments, along the first direction, the cross-section of other parts of the first flexible connecting portion 1111 may be other shapes, and these other parts can guide the first light guide beam 221, and the rotation function is achieved by the portion with a cross-section being circular, calabash-shaped, dumbbell-shaped, oval or fan-shaped. At least a part of the cross-section of the second flexible connecting portion 1121 is circular, calabash-shaped, dumbbell-shaped, oval or fan-shaped. The second flexible connecting portion 1121 with a cross-section being circular, calabash-shaped, dumbbell-shaped, oval or fan-shaped has an arc surface structure, that is, the second flexible connecting portion 1121 having an arc surface structure has a cross-section being circular, calabash-shaped, dumbbell-shaped, oval or fan-shaped. After the second light guide beam 231 is connected to the second flexible connecting portion 1121, rotation therebetween is achieved through the portion of the second flexible connecting portion 1121 with a cross-section being circular, calabash-shaped, dumbbell-shaped, oval or fan-shaped. In some embodiments, along the first direction, the cross-section of other parts of the second flexible connecting portion 1121 may be other shapes, and these other parts can guide the second light guide beam 231, and the rotation function is achieved by the portion with a cross-section being circular, calabash-shaped, dumbbell-shaped, oval or fan-shaped.

[0151] In some embodiments, the first flexible connection portion 1111 and the second flexible connection portion 1121 are through-hole structures. After the first connection portion 111 and the second connection portion 112 can enclose a detection cavity 113, both the first flexible connection portion 1111 and the second flexible connection portion 1121 are in communication with the detection cavity 113. The central axis directions of the first flexible connection portion 1111 and the second flexible connection portion 1121 extend along a first direction. The first light guide beam 221 is inserted into the first flexible connection portion 1111 along the first direction. The first light guide beam 221 is in communication with the detection cavity 113. The second light guide beam 231 is inserted into the second flexible connection portion 1121 along the first direction. The second light guide beam 231 is in communication with the detection cavity 113. The optical signal conducted by the first light guide beam 221 is input into the detection cavity 113 from the first flexible connection portion 1111, and the optical signal after passing through the detection part 40 is output from the second light guide beam 231. In some embodiments, in order to improve the comfort of the detection part 40 in the detection cavity 113, a light-transmitting film is provided at one end of the first flexible connection portion 1111 facing the detection cavity 113. Similarly, a light-transmitting film is provided at one end of the second flexible connection portion 1121 facing the detection cavity 113, which will form a complete inner wall of the detection cavity 113 and improve the wearing comfort of the detection part fixing member. In addition, the provided light-transmitting film can also limit the insertion depth of the first light guide beam 221 and the second light guide beam 231, preventing the first light guide beam 221 and the second light guide beam 231 from being inserted into the detection cavity 113.

[0152] In some preferred embodiments, both the first flexible connection portion 1111 and the second flexible connection portion 1121 are cylindrical holes. The first flexible connection portion 1111 is a cylindrical hole, the connection end 2212 of the first light guide beam is cylindrical, the central axis of the first flexible connection portion 1111 extends along the first direction. After the first light guide beam 221 is inserted into the first flexible connection portion 1111, the central axis of the first light guide beam 221 also extends along the first direction. The connection end 2212 of the first light guide beam should be adapted to the first flexible connection portion 1111. There is an interference fit between the first flexible connection portion 1111 and the first light guide beam 221, and the interference fit relationship between the two is achieved through the flexible characteristics of the first flexible connection portion 1111, that is, when the first light guide beam 221 is inserted into the first flexible connection portion 1111, the first flexible connection portion 1111 will deform to tightly wrap around the outside of the connection end 2212 of the first light guide beam, and the connection is fixed reliably. The second flexible connection portion 1121 is a cylindrical hole, the connection end 2312 of the second light guide beam is cylindrical, the central axis of the second flexible connection portion 1121 extends along the first direction. After the second light guide beam 231 is inserted into the second flexible connection portion 1121, the central axis of the second light guide beam 231 also extends along the first direction. The connection end 2312 of the second light guide beam should be adapted to the second flexible connection portion 1121. There is an interference fit between the second flexible connection portion 1121 and the second light guide beam 231, and the interference fit relationship between the two is achieved through the flexible characteristics of the second flexible connection portion 1121, that is, when the second light guide beam 231 is inserted into the second flexible connection portion 1121, the second flexible connection portion 1121 will deform to tightly wrap around the outside of the connection end 2312 of the second light guide beam, and the connection is fixed reliably.

[0153] Such as Figure 8As shown, in some embodiments, the blood oxygen probe 01 further includes a rigid housing 12, which is wrapped around the detection site fixing member 10; and the rigid housing 12 is provided with a first housing through hole 121 corresponding to the position of the first flexible connection portion 1111, and the rigid housing 12 is provided with a second housing through hole 122 corresponding to the position of the second flexible connection portion 1121. The rigidity of the rigid housing 12 should be defined as that the material for making the rigid housing 12 has higher strength and hardness relative to the material for making the detection site fixing member 10, and has stronger mechanical properties such as tensile strength, compressive strength and hardness. Or the rigidity of the rigid housing 12 should be defined as that the material for making the rigid housing 12 has higher strength and hardness relative to the materials for making the first flexible connection portion 1111 and the second flexible connection portion 1121, and has stronger mechanical properties such as tensile strength, compressive strength and hardness. Specifically, the rigid housing 12 can be made of one or more of hard glue, metal or plastic. The first light guide beam 221 passes through the first housing through hole 121 on the rigid housing 12 and then is connected to the first flexible connection portion 1111, and the second light guide beam 231 passes through the second housing through hole 122 on the rigid housing 12 and then is connected to the second flexible connection portion 1121. The cross-sectional shapes of the first housing through hole 121 and the second housing through hole 122 can specifically be circular, oval, polygonal, or other regular or irregular shapes.

[0154] In some embodiments, the detection site fixing member 10 is a sleeve-type fixing member, a finger clip-type fixing member or a strap-type fixing member. As Figures 5 - 7 shown, when the detection site fixing member 10 is a sleeve-type fixing member, the first connection portion 111 and the second connection portion 112 correspond to two relatively arranged parts of the sleeve-type fixing member, and the detection cavity 113 is the sleeve inner cavity. The sleeve-type fixing member can be directly sleeved outside the detection site 40, which is convenient to use and simple to operate. As Figure 8 shown, when the detection site fixing member 10 is a clamping-type fixing member, the first connection portion 111 and the second connection portion 112 correspond to the two relatively arranged clip pieces of the clamping-type fixing member, and the detection cavity 113 is the space between the two relatively arranged clip pieces. The clamping-type fixing member can be quickly fixed and is flexible to adjust. As Figure 9 shown, when the detection site fixing member 10 is a strap-type fixing member, the first connection portion 111 and the second connection portion 112 correspond to different positions in the length extension direction of the strap. After the first connection portion 111 and the second connection portion 112 are enclosed, they are relatively arranged and form the detection cavity 113. The strap-type fixing member has strong adjustability and can be applied to more detection sites 40.

[0155] In some preferred embodiments, when the detection site fixing member 10 is a sleeve-type fixing member or a strap-type fixing member, the detection site fixing member 10 is made of a flexible material; specifically, the detection site fixing member 10 can be an integrally formed soft rubber sleeve, or the detection site 40 includes an integrally formed hard rubber on the inner layer and an integrally formed soft rubber on the outer layer; the fixing member can be made of materials such as silica gel or rubber. When the detection site fixing member 10 made of a gummy material is in use, it can provide good tightness, adaptability, and adhesion during the connection process with the first light guide beam 221 and the second light guide beam 231, improving the connection reliability between the detection site fixing member 10 and the first light guide beam 221 and the second light guide beam 231. When the detection site fixing member 10 is a strap-type fixing member, the detection site fixing member 10 can also be made of nylon, polyester fiber, polypropylene, polyamide, or fabric, and is configured with a first flexible connection portion 1111 and a second flexible connection portion 1121 made of an acute angle or rubber material.

[0156] When the detection site fixing member 10 is a finger clip-type fixing member, the portion of the detection site fixing member 10 facing the detection cavity 113 is made of a flexible material, and the portion of the detection site fixing member 10 facing outward is made of a flexible material or a rigid material. That is, the detection site fixing member 10 includes an inner layer of the detection site fixing member 10 and an outer layer of the detection site fixing member 10. The hardness of the outer layer of the detection site fixing member 10 should be greater than that of the inner layer of the detection site fixing member 10. The inner layer of the detection site fixing member 10 is used to contact the detection site 40, and the inner layer of the detection site fixing member 10 made of soft rubber can improve the use comfort. The first flexible connection portion 1111 and the second flexible connection portion 1121 are disposed on the inner layer of the detection site fixing member 10; when the outer layer of the detection site fixing member 10 is also made of a flexible material, the first flexible connection portion 1111 and the second flexible connection portion 1121 are disposed on the inner layer and the outer layer of the detection site fixing member 10.

[0157] In some embodiments, a limiting structure 30 is provided on both the first flexible connection portion 1111 and the second flexible connection portion 1121. By providing the limiting structure 30 on the first flexible connection portion 1111, the installation position of the first light guide beam 221 on the first flexible connection portion 1111 can be effectively controlled and limited, and the connection stability between the two can be maintained; similarly, by providing the limiting structure 30 on the second flexible connection portion 1121, the installation position of the second light guide beam 231 on the second flexible connection portion 1121 can be effectively controlled and limited, and the connection stability between the two can be maintained.

[0158] In some embodiments, the number of the limiting structures 30 is plural, and the plural limiting structures 30 are arranged along a first direction. The plural limiting structures 30 are arranged along the extending direction of the first flexible connecting portion 1111, and the spacing between adjacent limiting structures 30 is equal. Arranging the plural limiting structures 30 can enhance the connection stability between the connecting end 2212 of the first light guide beam and the first flexible connecting portion 1111. Similarly, the plural limiting structures 30 are arranged along the extending direction of the second flexible connecting portion 1121, and the spacing between adjacent limiting structures 30 is equal. Arranging the plural limiting structures 30 can enhance the connection stability between the connecting end 2312 of the second light guide beam and the second flexible connecting portion 1121.

[0159] In some embodiments, the limiting structure 30 is a protrusion 31, a groove 32 or a damping member. Specifically, the protrusion 31 can be disposed on the connecting end 2212 of the first light guide beam, and the groove 32 can be disposed on the first flexible connecting portion 1111, or the protrusion 31 can be disposed on the first flexible connecting portion 1111, and the groove 32 can be disposed on the connecting end 2212 of the first light guide beam. When the first light guide beam 221 is inserted into the first flexible connecting portion 1111, the protrusion 31 is snapped into the groove 32 to realize the connection limit between the first light guide beam 221 and the first flexible connecting portion 1111. Similarly, the protrusion 31 and the groove 32 are respectively disposed on the connecting end 2312 of the second light guide beam and the second flexible connecting portion 1121. Specifically, the protrusion 31 can be disposed on the connecting end 2312 of the second light guide beam, and the groove 32 can be disposed on the second flexible connecting portion 1121, or the protrusion 31 can be disposed on the second flexible connecting portion 1121, and the groove 32 can be disposed on the connecting end 2312 of the second light guide beam. When the second light guide beam 231 is inserted into the second flexible connecting portion 1121, the protrusion 31 is snapped into the groove 32 to realize the connection limit between the second light guide beam 231 and the second flexible connecting portion 1121. The damping member is disposed independently of the first flexible connecting portion 1111 and the second flexible connecting portion 1121. The damping member can be a rubber ring, a silica gel ring or a plastic ring, etc., which can enhance the friction between the connecting end 2212 of the first light guide beam and the first flexible connecting portion 1111, or enhance the friction between the connecting end 2312 of the second light guide beam and the second flexible connecting portion 1121.

[0160] In some embodiments, the protrusion 31 is a ring structure, a sector ring structure, or a bump structure in an annular array. After the ring structure is divided by two straight lines passing through its center, two sector ring structures can be obtained, that is, the sector ring structure is a part of the ring structure, specifically, it can be a semi-circular ring or a quarter-circular ring. The bump structure can specifically be a spherical bump, a hemispherical bump, a cylindrical bump, a conical bump, or a bump structure of any shape. The ring structure, the sector ring structure, or the bump structure in the annular array protrudes outside the hole wall of the first flexible connection part 1111 / the connection end 2212 of the first light guide beam; similarly, the ring structure, the sector ring structure, or the bump structure in the annular array protrudes outside the hole wall of the second flexible connection part 1121 / the connection end 2312 of the second light guide beam.

[0161] In some embodiments, when the detection part 40 is placed in the detection cavity 113, the first direction is perpendicular to the extension direction of the detection part 40. That is, the connection end 2212 of the first light guide beam vertically accesses the first flexible connection part 1111. If the first flexible connection part 1111 is a through-hole structure, the connection end 2212 of the first light guide beam is vertically inserted into the first flexible connection part 1111. The connection end 2312 of the second light guide beam vertically accesses the second flexible connection part 1121. If the second flexible connection part 1121 is a through-hole structure, the connection end 2312 of the second light guide beam is vertically inserted into the second flexible connection part 1121. The optical signal of the first light guide beam 221 will vertically pass through the detection part 40 and then be vertically output from the second flexible connection part 1121 to the second light guide beam 231. The insertion depth of the connection end 2212 of the first light guide beam and the connection end 2312 of the second light guide beam does not affect the transmission of the optical signal, which helps to improve the detection accuracy of blood oxygen parameters; and making the optical signal vertically pass through the detection part 40 can enable most of the optical signals to pass through the detection part 40 and be received by the second light guide beam 231, effectively reducing light loss and also improving the detection accuracy of blood oxygen parameters. In the embodiment with the L-shaped first bending structure 2213, one of the bending parts (the end of the connection end 2212 of the first light guide beam) is vertically inserted into the first flexible connection part 1111, and the other bending part extends along the length extension direction of the first light guide beam 221 to avoid bending damage. Similarly, in the embodiment with the L-shaped second bending structure 2313, one of the bending parts (the end of the connection end 2312 of the second light guide beam) is vertically inserted into the second flexible connection part 1121, and the other bending part extends along the length extension direction of the second light guide beam 231 to avoid bending damage.

[0162] For other features of the first light guide beam 221 and the second light guide beam 231 in this embodiment, reference can also be made to the specific embodiments of the above-mentioned blood oxygen probe 01.

[0163] Finally, it should be noted that although the above embodiments have been described in the text and drawings of the specification of this application, the patent protection scope of this application cannot be limited thereby. Any technical solutions obtained by equivalent structure or equivalent process substitution or modification based on the substantial concept of this application and using the content recorded in the text and drawings of the specification of this application, as well as those directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are all included in the patent protection scope of this application.

Claims

1. A blood oxygen probe, characterized in that, Comprising: A detection site fixing member for fixing the detection site, on which a first connection portion and a second connection portion are provided, a first flexible connection portion is provided on the first connection portion, and / or a second flexible connection portion is provided on the second connection portion; A detection mechanism, the detection mechanism includes a housing, a transmitting component and a receiving component, the transmitting component includes a first light guide beam and a transmitting portion, the fixed end of the first light guide beam is fixedly connected to the transmitting portion, the connecting end of the first light guide beam is detachably connected to the first flexible connection portion, the receiving component includes a second light guide beam and a receiving portion, the fixed end of the second light guide beam is fixedly connected to the receiving portion, the connecting end of the second light guide beam is detachably connected to the second flexible connection portion; the transmitting portion and the receiving portion are oppositely arranged in the housing; The first connection portion and the second connection portion can enclose a detection cavity, so that the first flexible connection portion and the second flexible connection portion extend along a first direction and are oppositely arranged, and the first direction intersects with the extending direction of the detection site; When the detection portion is located in the detection cavity, the first light guide beam is used to transmit the optical signal emitted by the transmitting portion to the first flexible connection portion, the second light guide beam is used to transmit the optical signal received by the second flexible connection portion after passing through the detection portion to the receiving portion, and the receiving portion is used to convert the optical signal into an electrical signal to detect the blood oxygen parameter.

2. The blood oxygen probe according to claim 1, characterized in that: The connecting end of the first light guide beam and the first flexible connection portion are rotatably connected, and / or the connecting end of the second light guide beam and the second flexible connection portion are rotatably connected.

3. The blood oxygen probe according to claim 2, wherein: When the connecting end of the first light guide beam and the first flexible connection portion are rotatably connected, at least part of the side wall of the connecting end of the first light guide beam is an arc surface structure, and / or at least part of the side wall of the first flexible connection portion is an arc surface structure, and the connecting end of the first light guide beam and the first flexible connection portion are rotatably connected through the arc surface structure; When the connecting end of the second light guide beam and the second flexible connection portion are rotatably connected, at least part of the side wall of the connecting end of the second light guide beam is an arc surface structure, and / or at least part of the side wall of the second flexible connection portion is an arc surface structure, and the connecting end of the second light guide beam and the second flexible connection portion are rotatably connected through the arc surface structure.

4. The blood oxygen probe according to claim 2 or 3, characterized in that: At least part of the cross-section of the first flexible connection portion is circular, gourd-shaped, dumbbell-shaped, oval or fan-shaped, and at least part of the cross-section of the second flexible connection portion is circular, gourd-shaped, dumbbell-shaped, oval or fan-shaped.

5. The blood oxygen probe according to claim 2 or 3, characterized in that: The cross-section of the connecting end of the first light guide beam is circular, oval or fan-shaped, and the cross-section of the connecting end of the second light guide beam is circular, oval or fan-shaped.

6. The blood oxygen probe according to claim 1 or 2 or 3, characterized in that: The first flexible connection portion and the second flexible connection portion are through-hole structures.

7. The blood oxygen probe according to claim 2 or 3, characterized in that: The first flexible connection portion is a cylindrical hole, and the connecting end of the first light guide beam is cylindrical; the second flexible connection portion is a cylindrical hole, and the connecting end of the second light guide beam is cylindrical.

8. The blood oxygen probe according to claim 1, characterized in that: The blood oxygen probe further includes a rigid outer shell, and the rigid outer shell covers the detection site fixing member; And the rigid housing is provided with a first housing through hole corresponding to the position of the first flexible connection part, and the rigid housing is provided with a second housing through hole corresponding to the position of the second flexible connection part.

9. The blood oxygen probe according to claim 8, wherein: A clearance fit is provided between the first housing through hole and the connection end of the first light guide beam, and a clearance fit is provided between the second housing through hole and the connection end of the second light guide beam.

10. The blood oxygen probe according to claim 1 or 8, characterized in that: The detection part fixing member is a sleeve type fixing member, a clamping type fixing member or a strap type fixing member.

11. The blood oxygen probe according to claim 10, characterized in that: When the detection part fixing member is a sleeve type fixing member or a strap type fixing member, the detection part fixing member is made of a flexible material; When the detection part fixing member is a finger clip type fixing member, the part of the detection part fixing member facing the detection cavity is made of a flexible material, and the part of the detection part fixing member facing outwards is made of a flexible material or a rigid material.

12. The blood oxygen probe according to claim 1, wherein: A limiting structure is provided between the connection end of the first light guide beam and the first flexible connection part, and between the connection end of the second light guide beam and the second flexible connection part.

13. The blood oxygen probe according to claim 12, wherein: The number of the limiting structures is multiple, and the multiple limiting structures are arranged along a first direction.

14. The blood oxygen probe according to claim 12 or 13, characterized in that: The limiting structure includes a protruding part and a groove, and the protruding part and the groove are respectively arranged on the connection end of the first light guide beam and the first flexible connection part; and the protruding part and the groove are respectively arranged on the connection end of the second light guide beam and the second flexible connection part.

15. The blood oxygen probe according to claim 14, characterized in that: The protruding part is an annular structure, a sector ring structure or a convex point structure in an annular array.

16. The blood oxygen probe according to claim 12 or 13, characterized in that: The limiting structure is a damping member.

17. The blood oxygen probe according to claim 1, characterized in that: The connection end of the first light guide beam is provided with a first bending structure, and the connection end of the second light guide beam is provided with a second bending structure.

18. The blood oxygen probe according to claim 17, wherein: Both the first bending structure and the second bending structure are L-shaped structures.

19. The blood oxygen probe according to claim 1 or 17 or 18, characterized in that: When the detection part is located in the detection cavity, the first direction is perpendicular to the extending direction of the detection part.

20. The blood oxygen probe according to claim 1, wherein: The connection end of the first light guide beam and the connection end of the second light guide beam are both rigid structures.

21. A detection site fixing member, characterized in that, The detection part fixing member is provided with a first connection part and a second connection part, and a first flexible connection part is arranged on the first connection part, or / and a second flexible connection part is arranged on the second connection part; The first connection part and the second connection part can enclose a detection cavity, so that the first flexible connection part and the second flexible connection part extend along the first direction and are oppositely arranged, and the first direction intersects with the extending direction of the detection part.

22. The detection site fixing member according to claim 21, wherein: At least part of the side wall of the connection end of the first light guide beam is an arc surface structure; at least part of the side wall of the connection end of the second light guide beam is an arc surface structure.

23. The detection site fixing member according to claim 22, characterized in that: At least part of the cross section of the first flexible connection part is circular, gourd-shaped, dumbbell-shaped, oval or fan-shaped, and at least part of the cross section of the second flexible connection part is circular, gourd-shaped, dumbbell-shaped, oval or fan-shaped.

24. The detection site fixing member according to claim 21 or 22 or 23, characterized in that: The first flexible connection part and the second flexible connection part are through hole structures.

25. The detection site fixing member according to claim 22 or 23, characterized in that: The first flexible connection part and the second flexible connection part are cylindrical holes.

26. The detection site fixing member according to claim 21, wherein: The blood oxygen probe further includes a rigid housing, and the rigid housing is coated outside the detection part fixing member; And the rigid housing is provided with a first housing through hole corresponding to the position of the first flexible connection part, and the rigid housing is provided with a second housing through hole corresponding to the position of the second flexible connection part.

27. The detection site fixing member according to claim 21 or 26, characterized in that: The detection site fixing member is a sleeve-type fixing member, a finger clip-type fixing member or a strap-type fixing member.

28. The detection site fixing member according to claim 27, wherein: When the detection site fixing member is a sleeve-type fixing member or a strap-type fixing member, the detection site fixing member is made of a flexible material; When the detection site fixing member is a finger clip-type fixing member, the part of the detection site fixing member facing the inside of the detection cavity is made of a flexible material, and the part of the detection site fixing member facing the outside is made of a flexible material or a rigid material.

29. The detection site fixing member according to claim 22, characterized in that: Limit structures are provided on both the first flexible connection part and the second flexible connection part.

30. The blood oxygen probe according to claim 29, wherein: The number of the limit structures is multiple, and the multiple limit structures are arranged along a first direction.

31. The blood oxygen probe according to claim 29 or 30, characterized in that: The limit structure is a protrusion, a groove or a damping member.

32. The blood oxygen probe according to claim 31, wherein: The protrusion is an annular structure, a sector-annular structure or a bump structure in an annular array.

33. The blood oxygen probe according to claim 21, wherein: When the detection part is located in the detection cavity, the first direction is perpendicular to the extending direction of the detection site.

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