A blood gas analyzer

Abstract

The application discloses a blood gas analyzer, which comprises a mainframe support, a blood gas measuring module, a blood oxygen measuring module and a reagent kit assembly. The mainframe support is internally provided with a reagent kit cavity. The reagent kit assembly comprises a reagent kit and a sample container. The outer wall of the reagent kit is provided with a concave groove. The sample container is connected to the reagent kit and located in the concave groove. The blood oxygen measuring module comprises an ultrasonic device and a light emitting device which are located outside the mainframe support. The ultrasonic device and the light emitting device have a separated state completely located outside the concave groove and a testing state partially extending into the concave groove and contacting the sample container during movement. The concave groove arranged on the outer wall of the reagent kit can reduce the additional volume of the sample container and protect the sample container. Meanwhile, the ultrasonic device and the light emitting device are movable. The sample container and the reagent kit are integrated as replaceable consumables, which facilitates the taking, placing and repairing of the reagent kit assembly.

Description

Technical Field

[0001] This application relates to the field of in vitro diagnostic equipment technology, specifically to a blood gas analyzer. Background Technology

[0002] A blood gas analyzer uses electrodes to react electrochemically with a blood sample, converting the chemical components in the blood into electrical signals to measure the partial pressure of oxygen (dissolved oxygen), pH value, partial pressure of carbon dioxide, electrolyte concentration, and other parameters. Current blood gas analyzers typically consist of three parts: a test card, a reagent kit, and the analyzer itself. The test card and reagent kit are removable consumables and need to be replaced frequently during actual use.

[0003] The analyzer main unit, test card, and reagent kit all have liquid paths. The test card contains multiple detection electrodes. After the test solution (usually a blood sample) enters the test card, it contacts the detection electrodes. The detection electrodes detect the parameters in the test solution and output an electrical signal, which is used to obtain the detected parameters. The reagent kit also has liquid paths, and it typically contains one or more liquid packets. The liquid in these packets can be conducted to the liquid paths of the test card.

[0004] Blood oxygenation measurement refers to measuring the oxygen saturation (different from oxygen partial pressure) in a blood sample, and it is generally performed using spectrophotometry. The principle of spectrophotometry can be summarized as follows: the blood sample to be tested is placed in a sample container. First, the blood cells in the blood sample are broken up by ultrasound, releasing hemoglobin. Then, detection light is emitted into the blood sample. Since hemoglobin absorbs light of different wavelengths differently, the proportion of hemoglobin in various blood samples can be calculated.

[0005] In related technologies, blood gas analyzers and pulse oximeters are two independent devices, requiring separate blood gas analysis and pulse oximetry measurements on different instruments. In some blood gas analyzers with pulse oximetry measurement capabilities, the sample container itself is not a periodically replaceable consumable. However, if the sample container becomes clogged or malfunctions, it is difficult to replace, making maintenance cumbersome. In other blood gas analyzers that use both reagent kits and sample containers as consumables, both need to be replaced separately during sample testing, making the operation more complicated. Utility Model Content

[0006] In view of this, the purpose of this application is to provide a blood gas analyzer that uses the entire reagent kit component with integrated sample container as a consumable and has high accuracy in measuring blood oxygen.

[0007] To solve the above-mentioned technical problems, the technical solution of this application is as follows: A blood gas analyzer includes a main unit support, a blood gas measurement module, a blood oxygen measurement module, and a reagent kit assembly. The reagent kit assembly includes a reagent kit and a sample container. The blood gas measurement module is configured to detect an input sample to obtain a blood gas signal, and the blood oxygen measurement module is configured to detect a sample input to the sample container to obtain a blood oxygen signal. The main unit support has a reagent kit chamber inside for housing the reagent kit components, and the reagent kit components are detachably disposed in the reagent kit chamber; the outer wall of the reagent kit has a groove, and the sample container is connected to the reagent kit and located in the groove; The blood oxygen measurement module includes a movable ultrasonic device and a light-emitting device. The ultrasonic device is used to emit ultrasonic waves to the sample container, and the light-emitting device is used to emit detection light to the sample container. During movement, the ultrasonic device and the light-emitting device have a separated state completely outside the groove and a test state partially inserted into the groove.

[0008] In some embodiments, the reagent kit includes an adjacent top cover and a side plate, the bottom wall of the groove being connected between the top cover and one of the side plates. The top cover has a notch forming a first opening of the groove, and the side plate has a notch forming a second opening of the groove. The sample container as a whole does not extend beyond the plane defined by the first opening and the plane defined by the second opening.

[0009] In some embodiments, the reagent kit has a reagent pack chamber for holding the reagent pack, the groove wall is located between the groove and the reagent pack chamber, one end of the sample container is connected to one sidewall of the groove, and the other end of the sample container is connected to another sidewall of the groove.

[0010] In some embodiments, the sample container includes a sample container body with a sample chamber inside for containing a sample. Liquid guide tubes communicating with the sample chamber are provided at both ends of the sample container body and extend into the interior of the reagent kit. The blood oxygen testing channel includes the sample chamber and a pair of liquid guide tubes. The reagent kit is equipped with a delivery pump and a connecting pipe, which communicates with the blood oxygen testing channel. When the reagent kit assembly is inserted into the reagent kit chamber, the delivery pump can drive liquid through the blood oxygen testing channel.

[0011] In some embodiments, the kit is further provided with a calibration solution reagent pack for containing calibration solution. When the kit components are loaded into the kit chamber, the calibration solution reagent pack is connected to the liquid guide tube of the sample container through the connecting tube, and the calibration solution reagent pack can provide calibration solution to the sample chamber in the main body of the sample container through the liquid guide tube.

[0012] In some embodiments, the host bracket is further provided with a test card mounting position for mounting the test card assembly, the test card assembly being able to be inserted into or removed from the test card mounting position; the reagent kit assembly has a test card mounting cavity on its exterior, when both the test card assembly and the reagent kit assembly are installed in the host bracket, the test card assembly is installed in the test card mounting cavity outside the reagent kit assembly, the blood gas testing channel inside the test card assembly can be connected to the connecting pipeline, the delivery pump can drive liquid to enter the blood gas testing channel and the blood oxygen testing channel in sequence, or the delivery pump can drive liquid to enter the blood gas testing channel and the blood oxygen testing channel respectively.

[0013] In some embodiments, flexible sleeves are connected to both ends of the sample container body, the groove sidewall is provided with mounting holes, the flexible sleeve is fixed in the mounting holes, and the liquid guide tube passes through the inner hole of the flexible sleeve.

[0014] In some embodiments, the diameter of the inner bore of the flexible sleeve is larger than the outer diameter of the liquid guide tube.

[0015] In some embodiments, the sample container body includes two generally parallel light-transmitting plates through which detection light passes, the sample chamber being formed between the two light-transmitting plates, the normal of the plate surface being inclined relative to the top cover and side plate of the reagent kit; and the first slot and the second slot being located on opposite sides of the light-transmitting plates.

[0016] In some embodiments, the angle between the normal of the surface of the light-transmitting plate and the top cover of the reagent kit is 30°-60°, and the angle between the normal of the surface of the light-transmitting plate and the side plate of the reagent kit is 30°-60°.

[0017] In some embodiments, the reagent kit chamber includes a sample container test chamber, and the main support has an opening for the sample container test chamber. When the reagent kit assembly is installed in the reagent kit chamber, the opening for the sample container test chamber is configured to expose the recess of the reagent kit. When the pulse oximetry module is in the separated state, the ultrasound device and the light-emitting device are located outside the main support. When the pulse oximetry module is in the test state, part or all of the ultrasound device and part or all of the light-emitting device are located inside the sample container test chamber of the main support, and the ultrasound device and the light-emitting device are in contact with the sample container.

[0018] In some embodiments, the host support includes an adjacent host support top plate and a host support side plate, and the sample container test chamber opening includes a top surface opening located on the host support top plate and a side surface opening located on the host support side plate; the first groove of the groove is aligned with and communicates with the top surface opening, and the second groove of the groove is aligned with and communicates with the side surface opening.

[0019] In some embodiments, the blood oxygen measurement module further includes a mounting bracket connected to the outside of the main unit bracket, the mounting bracket being provided with a drive source for driving the ultrasound device and the light-emitting device to move in opposite directions; The sample container has a first side and a second side arranged opposite to each other. The ultrasound device faces the first side of the sample container, and the light-emitting device faces the second side of the sample container. When the blood oxygen measurement module is in the test state, the ultrasound device is in contact with the first side of the sample container, and the light-emitting device is in contact with the second side of the sample container.

[0020] In some embodiments, the sample container has a first side and a second side facing away from each other, the ultrasound device faces the first side of the sample container, and the light-emitting device faces the second side of the sample container; the blood oxygen measurement module includes a drive actuator configured to drive the ultrasound device and the light-emitting device to move in opposite directions; the ultrasound device and the light-emitting device, driven by the drive actuator, can synchronously approach and approximately simultaneously contact the sample container in a straight line or synchronously move away from the sample container in a straight line. The drive actuator includes a mounting bracket, a drive motor, a main transmission assembly, and a synchronous transmission assembly; the mounting bracket is fixedly connected to the main support bracket, and the drive motor is mounted on one end of the mounting bracket; The mounting bracket has a semi-open cavity structure. The inner wall of the mounting bracket is provided with multiple first guide rails and multiple second guide rails. The guiding directions of the first guide rails and the second guide rails are parallel or approximately parallel. The ultrasonic device, the light-emitting device, and the synchronous transmission assembly are all located within the cavity structure of the mounting bracket. The ultrasonic device is slidably connected to multiple first guide rails, and the light-emitting device is slidably connected to multiple second guide rails. The main transmission assembly is driven between the drive motor and the ultrasonic device, and the synchronous transmission assembly is driven between the ultrasonic device and the light-emitting device. The drive motor drives the ultrasonic device to slide linearly along multiple first guide rails on the mounting bracket through the main transmission assembly, and the ultrasonic device drives the light-emitting device to slide linearly along multiple second guide rails through the synchronous transmission assembly, with the sliding directions of the ultrasonic device and the light-emitting device being opposite. The main transmission assembly includes a slider, a rigid force transmission component, and a first fixing pin. The slider can be driven by the drive motor to make linear motion. The first fixing pin is fixedly connected to the mounting bracket. The rigid force transmission component is rotatably arranged around the axis of the first fixing pin. The ultrasonic device includes an ultrasonic mounting bracket slidably connected to the mounting bracket and an ultrasonic transducer fixed on the ultrasonic mounting bracket, the ultrasonic transducer being used to emit ultrasonic waves to the sample container. The slider is provided with a first guide groove, the ultrasonic mounting bracket is provided with a second guide groove, and the rigid force transmission component is provided with a first transmission pin and a second transmission pin. The second transmission pin is located between the first transmission pin and the first fixed pin. The first transmission pin extends into the first guide groove and slides in cooperation with the first guide groove, and the second transmission pin extends into the second guide groove and slides in cooperation with the second guide groove. The synchronous transmission assembly includes a transmission rod and a second fixing pin, the second fixing pin being connected to the mounting bracket, and the transmission rod being rotatable about the axis of the second fixing pin; The light-emitting device includes a light source mounting bracket slidably connected to the mounting bracket and a light-emitting component fixed on the light source mounting bracket. The light-emitting component is used to emit detection light to the sample container. The ultrasonic mounting bracket is provided with a third guide groove, the light source mounting bracket is provided with a fourth guide groove, the transmission rod is connected with a third transmission pin and a fourth transmission pin, and the second fixing pin is located between the third transmission pin and the fourth transmission pin; the third transmission pin extends into the third guide groove and slides with the third guide groove, and the fourth transmission pin extends into the fourth guide groove and slides with the fourth guide groove; The first guide groove, the second guide groove, the third guide groove, and the fourth guide groove are strip-shaped grooves. The length direction of the first guide groove is set at an angle to the sliding direction of the slider. The length directions of the second guide groove, the third guide groove, and the fourth guide groove are approximately parallel to the length direction of the first guide groove. The guiding direction of the first guide rail, the vibration direction of the ultrasonic device, and the detection light emission direction of the light-emitting device are parallel or approximately parallel. The ultrasound device is equipped with an optical fiber. The detection light emitted by the light-emitting device passes through the sample container and illuminates the optical fiber. After receiving the detection light, the optical fiber guides the detection light into the spectrometer connected to the optical fiber. The main support frame is provided with a sample container test chamber opening, which is configured to expose the sample container; when the blood oxygen measurement module is in the separated state, the ultrasound device and the light-emitting device are located outside the main support frame; when the blood oxygen measurement module is in the test state, part or all of the ultrasound device and part or all of the light-emitting device are located inside the main support frame. The host support includes two adjacent host support top plates and host support side plates arranged at an angle. The sample container test chamber opening includes a top surface opening on the host support top plate and a side surface opening on the host support side plate. The first groove of the groove is aligned with and communicates with the top surface opening, and the second groove of the groove is aligned with and communicates with the side surface opening. The ultrasonic device extends into or out of the groove from the top surface opening, and the light-emitting device extends into or out of the groove from the side surface opening. The mounting bracket includes a first side and a second side arranged adjacent to each other at an angle. The first side is aligned with the top plate of the main unit bracket, and the second side is aligned with the side plate of the main unit bracket. The first side has a first side bracket opening that is aligned with and communicates with the top opening, and the second side has a second side bracket opening that is aligned with and communicates with the side opening. During movement, the ultrasonic device can extend into or out of the groove through the first side bracket opening and the top opening. During movement, the light-emitting device can extend into or out of the groove through the second side bracket opening and the side opening. The host bracket is also provided with a test card mounting position for installing the test card assembly. The reagent kit assembly has a delivery pump and a connecting pipe inside, and the connecting pipe is connected to the blood oxygen testing channel inside the sample container. When the test card assembly and the reagent kit assembly are installed in the host bracket, the blood gas testing channel inside the test card assembly is connected to the connecting pipe. The delivery pump can drive liquid to enter the blood gas testing channel and the blood oxygen testing channel in sequence, or the delivery pump can drive liquid to enter the blood gas testing channel and the blood oxygen testing channel respectively.

[0021] The technical solution of this application has the following advantages: a groove is provided on the outer wall of the reagent kit, the sample container is connected to the reagent kit and located in the groove, the sample container and the reagent kit together form the reagent kit assembly, and the reagent kit assembly is detachably installed in the reagent kit chamber of the main unit bracket; on the one hand, it can reduce the additional volume occupied by the sample container outside the reagent kit chamber, and on the other hand, it can avoid unnecessary collisions and scratches between the sample container and other devices in the blood gas analyzer through the groove, thus protecting the sample container; at the same time, the ultrasound device and the light emission device are made movable, and the sample container and the reagent kit are integrated as a replaceable consumable, which can avoid the sample container from obstructing the process of taking the reagent kit out and putting it in, so as to facilitate the taking out, putting in and maintaining the reagent kit assembly. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the blood gas analyzer in the embodiments of this application; Figure 2 This is a schematic diagram of the connection structure of the host support, reagent kit assembly, and drive actuator in an embodiment of this application; Figure 3 This is a schematic diagram of the connection structure between the mounting bracket and the main unit bracket in an embodiment of this application; Figure 4This is a schematic diagram of the main unit bracket in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the reagent kit components in the embodiments of this application; Figure 6 This is a schematic diagram showing the assembly relationship between the host support and the reagent kit components in an embodiment of this application; Figure 7 for Figure 2 A schematic diagram showing the structure of a bracket concealing a half-shell bracket to expose the ultrasonic and light-emitting devices within. Figure 8 This is a schematic diagram of the connection structure of the reagent kit top cover, the groove-shaped component, and the sample container in an embodiment of this application; Figure 9 This is a schematic diagram of the connection structure between the grooved component and the sample container in an embodiment of this application; Figure 10 This is a three-dimensional structural diagram of the sample container in an embodiment of this application; Figure 11 This is a cross-sectional view of the sample container in an embodiment of this application; Figure 12 This is an exploded view of the sample container in an embodiment of this application; Figure 13 This is a schematic diagram showing the positional relationship between the ultrasound device and the light-emitting device of the blood oxygen measurement module in the test state and the sample container in an embodiment of this application. Figure 14 This is a schematic diagram showing the positional relationship between the ultrasound device and the light-emitting device of the blood oxygen measurement module in this embodiment of the application and the sample container when they are in a separated state. Figure 15 This is a schematic diagram of the ultrasound device and light-emitting device of the blood oxygen measurement module in the test state in an embodiment of this application. Figure 16 This is a schematic diagram of the ultrasound device and the light-emitting device of the blood oxygen measurement module in an embodiment of this application when they are in a separated state. Figure 17 This is a three-dimensional structural diagram of the mounting bracket, ultrasonic device, luminescent device, and spectrometer in the embodiments of this application; Figure 18 This is a schematic diagram of the connection structure of the mounting bracket, ultrasonic device, luminescent device and spectrometer in an embodiment of this application; Figure 19 for Figure 17 A schematic diagram of the structure after a half-shell bracket is hidden in the mounting bracket; Figure 20 This is a schematic diagram showing the connection relationship between the drive motor, the active transmission component, and the ultrasonic device in the embodiments of this application; Figure 21 This is a schematic diagram showing the connection relationship between the slider, the rigid force transmission component, and the first fixing pin in an embodiment of this application. Figure 22 This is a schematic diagram showing the connection relationship between the drive motor, active transmission assembly, ultrasonic device, synchronous transmission assembly, and light-emitting device in an embodiment of this application. Figure 23 This is a schematic diagram showing the connection relationship between the transmission rod and the light source mounting bracket in an embodiment of this application; Figure 24 This is a schematic diagram of the mounting bracket and the spectrometer, ultrasonic device and luminescent device mounted on it in the embodiments of this application; Figure 25 This is a schematic diagram of the connection structure between the ultrasonic device and the spectrometer in the embodiments of this application; Figure 26 This is an exploded view of the ultrasonic device and spectrometer in the embodiments of this application; Figure 27 This is a schematic diagram of the structure of the optical fiber and ultrasonic transducer in the embodiments of this application; Figure 28 This is a cross-sectional view of the optical fiber and ultrasonic transducer of the ultrasonic device in the embodiments of this application; Figure 29 This is an exploded view of the optical fiber and ultrasonic transducer of the ultrasonic device in the embodiments of this application; Figure 30 This is an exploded view of the optical fiber in the embodiments of this application; Figure 31 This is a schematic diagram of the mounting bracket, ultrasonic device, and light-emitting device in an embodiment of this application; Figure 32 This is a schematic diagram of the structure of the light-emitting device in the embodiments of this application; Figure 33 This is an exploded view of the light-emitting device in the embodiments of this application; Figure 34 This is a cross-sectional view of the light-emitting device in an embodiment of this application; Figure 35 This is a schematic diagram of the structure of the light source component in the light-emitting device in the embodiments of this application; Figure 36 This is an exploded view of the light source component in the light-emitting device in the embodiments of this application; Figure 37 This is a schematic diagram of the structure of the light source circuit board in the light-emitting device in the embodiments of this application.

[0025] Explanation of reference numerals in the attached figures: 11. Main unit bracket; 111. Top plate of main unit bracket; 112. Side plate of main unit bracket; 111a. Top opening; 112a. Side opening; 11b. Test card mounting position; 11c. Reagent kit chamber; 12. Base; 13. Front shell of main unit; 131. Display screen; 132. Test card slot; 133. Sampling needle port; 134. Barcode scanning port; 14. Rear shell of main unit; 2. Drive actuator; 21. Mounting bracket; 21a. First side of the bracket; 21b. Second side of the bracket; 211. First guide rail; 212. Second guide rail; 213. Bracket step; 23. First fixing pin; 22. Drive motor; 24. Rigid force transmission component; 241. First transmission pin; 242. Second transmission pin; 25. Second fixing pin; 26. Transmission rod; 261. Third transmission pin; 262. Fourth transmission pin; 27. Stroke limit switch; 28. Slider; 28a. First guide groove; 3. Ultrasonic device; 31. Ultrasonic mounting bracket; 31a. Second guide groove; 31b. Third guide groove; 311. Transducer bracket; 312. Transducer mounting base; 312a. Cable passage; 313. Spectrometer connector; 3131. Connecting plate; 3132. Connecting arm; 315. Transducer mounting cover; 32. Ultrasonic transducer; 321. Cable passage; 322. Locking hole; 323. Mounting ring; 323a. Notch; 324. Vibration source; 325. First vibration... 325a, Light inlet channel; 326, Second vibrating body; 327, Electrode pair; 33, Optical fiber; 331, Optical fiber body; 331a, Optical receiving end; 331b, Optical output end; 331c, Light guide section; 331d, Receiving section; 332, Limiting sleeve; 3321, First protective tube; 3321a, Light transmission channel; 3322, Second protective tube; 3322a, Clearance channel; 35, First buffer component; 36, Position recognition component; 37, Second buffer component; 4. Light-emitting device; 41. Light source mounting bracket; 41a. Fourth guide groove; 42. Light source housing; 421. Light source housing base; 421a. Receiving cavity; 421b. Insertion hole; 421c. Positioning groove; 4221. Positioning post; 422. Light source housing cover plate; 422a. Opening; 43. Light source assembly; 431. Circuit board base; 4311. Limiting post; 432. Light source circuit board; 4321. Light-emitting unit; 433. Optical path assembly; 434. Spacer; 435. Top cover; 435a. Light emission hole; 435b. Light-emitting end; 4351. Cover body; 4352. Lampshade; 44. Elastic element; 45. Heating unit; 46. Heat dissipation substrate; 5. Reagent kit components; 51. Reagent kit; 51a. Reagent packaging chamber; 511. Groove; 511a. First groove; 511b. Second groove; 512. Reagent kit top cover; 513. Reagent kit side plate; 514. Groove-shaped component; 52. Sample container; 521. Sample container body; 521a. Positioning hole; 5211. Light-transmitting plate; 522. Liquid guide tube; 523. Flexible sleeve; 5231. Sleeve body; 5232. Sleeve connection; 5233. Sleeve limiting part; 53. Test card mounting cavity; 6. Spectrometer; 61. Spectrometer mounting bracket; 612. Extension arm. Detailed Implementation

[0026] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] Traditional blood gas analyzers include an analyzer main unit, reagent kit components, and test card components. Both the reagent kit components and test card components are consumables required for blood gas analysis measurements. Generally, the reagent kit components are single-use or reusable consumables, while the test card components are single-use or reusable consumables. In some implementations, the reagent kit component includes a reagent kit and components such as a delivery pump, reagent pack, waste liquid bag, and connecting tubing disposed within the kit. The reagent pack contains calibration solution, and the waste liquid bag is used to collect waste liquid after testing. When the reagent kit component and test card component are installed in the analyzer main unit, the connecting tubing within the reagent kit can connect to the blood gas testing channel inside the test card component.

[0030] In some implementations, before performing blood gas analysis on the test solution, the test card assembly is installed into the analyzer main unit. A calibration solution is drawn by a delivery pump and flows from the connecting tubing within the kit to the blood gas testing channel inside the test card assembly. The calibration solution is used to calibrate the detection electrodes in the test card assembly. After calibration, the calibration solution is returned to the waste bag inside the kit. Then, the test solution, located outside the analyzer main unit and inside a syringe or capillary, is drawn and flows through the connecting tubing within the kit to the blood gas testing channel inside the test card assembly. The detection electrodes in the test card assembly perform blood gas analysis on the test solution. After testing, the test solution is returned to the waste bag inside the kit. After testing, the cleaning solution within the kit is drawn and sequentially flows through the connecting tubing inside the kit and the blood gas testing channel inside the test card before returning to the waste bag, completing the cleaning of all tubing and preparing for the next use. Traditional blood gas analyzers can only perform blood gas analysis, and their functionality is relatively limited. In order to enable blood gas analyzers to measure blood oxygen parameters (such as blood oxygen saturation), this application provides a blood gas analyzer with blood oxygen parameter measurement function.

[0031] like Figure 1 and Figure 2 The blood gas analyzer shown, in some embodiments of this application, includes a main unit housing and a main unit bracket 11 disposed within the main unit housing, a blood gas measurement module (not shown), and a blood oxygen measurement module. The blood gas measurement module is configured to detect the input sample to obtain a blood gas signal, and the blood oxygen measurement module is configured to detect the blood oxygen of the input sample to obtain a blood oxygen signal.

[0032] In some embodiments, the analyzer host (not shown in the figure) is housed within the main unit casing. The term "analyrical host" in this document can be understood as any major structure in the blood gas analyzer other than the removable consumables and the blood oxygen measurement module. For example, the analyzer host may include a signal processing module, a human-computer interaction module, and a circuit module. The signal processing module converts the acquired electrical signals into clinically interpretable physiological parameters; the human-computer interaction module enables user operation, result viewing, and instrument settings; and the circuit module provides stable power supply and signal transmission for the entire host. The various modules of the analyzer host can be directly or indirectly fixedly mounted on the host bracket 11.

[0033] like Figure 1 and Figure 2As shown, in some embodiments of this application, the main unit housing includes a base 12 and a front housing 13 and a rear housing 14 connected to the base 12. A main unit bracket 11 is mounted on the base 12. The front housing 13 and the rear housing 14 are connected to form the outer housing of the blood gas analyzer. The main unit bracket 11, the blood gas measurement module, and the blood oxygen measurement module are all located within the space enclosed by the front housing 13 and the rear housing 14. The front housing 13 is equipped with a display screen 131, a test card slot 132, a sampling needle port 133, a barcode scanning port 134, etc. The test card slot 132 is used for inserting a test card assembly, and the sampling needle port 133 is used for inserting a syringe or capillary tube. The test fluid inside the syringe or capillary tube can enter the tubing inside the main unit housing through the sampling needle port 133. The blood gas analyzer also contains various components required to realize the blood gas analysis function and the measurement functions of indicators such as blood oxygen (blood oxygen saturation), including a power supply, a printer, and a main control board.

[0034] like Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments of this application, the blood gas analyzer includes a detachably mounted reagent kit assembly 5. The overall shape of the reagent kit assembly 5 matches the overall shape of the main unit bracket 11. The reagent kit assembly 5 includes a reagent kit 51 and a sample container 52. The reagent kit 51 is cubic in shape, and the sample container 52 is integrated onto the reagent kit 51 and protrudes from the outer surface of the reagent kit 51. The sample container 52 and the reagent kit 51 together constitute the reagent kit assembly 5. The reagent kit 51 has a reagent chamber 51a inside, which can hold one or more reagent kits required for testing. Furthermore, the reagent chamber 51a can also hold components required for blood gas analysis testing and blood oxygen parameter measurement, such as a delivery pump, connecting tubing, and control valves.

[0035] like Figure 4 , Figure 5 and Figure 6As shown, in some embodiments of this application, the sample container 52 has a blood oxygen testing channel inside, which is connected to the communicating tubing inside the reagent kit 51. The outer wall of the reagent kit 51 has a recessed groove 511, and the sample container 52 is connected to the reagent kit 51 and located within the groove 511. The structure of the sample container 52 being located within the groove 511 can, on the one hand, reduce the volume occupied by the sample container 52 outside the reagent kit chamber 11c, and on the other hand, prevent unnecessary collisions and scratches between the sample container 52 and other components inside the blood gas analyzer, thus protecting the sample container 52; it can also prevent the sample container 52 from obstructing the process of placing and removing the reagent kit 51, facilitating the placement, removal, and maintenance of the reagent kit 51. In a further embodiment, the groove wall of the groove 511 separates the groove 511 from the reagent kit chamber 51a, and the two ends of the sample container 52 are respectively connected to a pair of groove sidewalls of the groove 511.

[0036] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments of this application, the main unit support 11 is generally cubic in shape. The main unit support 11 includes a main unit support side plate 112 forming the side wall of the main unit support 11 and a main unit support side plate 112 forming the top wall of the main unit support 11. The main unit support 11 also has a test card mounting position 11b on its exterior for mounting a test card assembly. The test card assembly is replaceably inserted into the test card mounting position 11b as a consumable. The test card assembly has a blood gas testing channel inside. The reagent kit 51 also has a test card mounting cavity 53 on its exterior. When the reagent kit 51 is inserted into the reagent kit chamber 11c inside the main unit support 11, the test card mounting cavity 53 protrudes from the position of the test card mounting position 11b. When the external test card assembly is inserted into the blood gas analyzer, the test card assembly is inserted into the test card mounting cavity 53 and connected to the reagent kit 51, wherein the blood gas testing channel inside the test card assembly can communicate with the communicating tubing inside the reagent kit 51.

[0037] like Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, in some embodiments of this application, the main unit bracket 11 has a reagent chamber 11c for housing the reagent kit component 5. The reagent kit component 5 is inserted into the reagent chamber 11c as a consumable and can be inserted into or removed from the reagent chamber 11c through a reagent assembly port on one side of the reagent chamber 11c. When the reagent kit component 5 is installed in the main unit bracket 11, the sample container 52 is installed together with the reagent kit 51 into the reagent chamber 11c inside the main unit bracket 11, and the sample container 52 integrated on the reagent kit 51 is located precisely at the sample container test chamber position of the reagent chamber 11c. This arrangement not only facilitates the integrated replacement of the sample container 52 and the reagent kit 51, but also eliminates the need for additional space outside the main unit bracket 11 for inserting the sample container 52, which is beneficial for the miniaturization design of the main unit bracket 11 and the entire device.

[0038] like Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments of this application, the reagent kit 51 includes an adjacent top cover 513 and a side plate 513. The top cover 513 forms the top wall of the reagent kit 51, and the side plate 513 forms the side wall of the reagent kit 51. The bottom wall of the groove 511 connects the top cover 513 and one of the side plates 513. The groove 511 has a first opening 511a exposed in the top cover 513 and a second opening 511b exposed in the side plate 513. Specifically, the top cover 512 has a notch, and the notch of the top cover 512 forms the first opening 511a of the groove 511; the side plate 513 has a notch, and the notch of the side plate 513 forms the second opening 511b of the groove 511. The sample container 52 as a whole does not exceed the plane defined by the first opening 511a and the plane defined by the second opening 511b. This method of setting openings on the top and side walls of the reagent kit 51 not only minimizes the space occupied by the groove 511 inside the reagent kit 51, but also facilitates the insertion of the ultrasonic device 3 and the light-emitting device 4 outside the main support 11 into the groove 511 to contact the sample container 52.

[0039] like Figure 4 , Figure 5 and Figure 6As shown, in some embodiments of the groove 511, the groove 511 is formed on a separate groove member 514, which defines the groove 511 and connects between the reagent kit top cover 513 and the reagent kit side plate 513. The groove member 514 can be a detachable structure that is disassembled and installed on the reagent kit 51, or it can be a non-detachable structure that is fixedly installed on the reagent kit 51. The two ends of the sample container 52 are connected between a pair of groove sidewalls of the groove member 514. Each pair of groove sidewalls of the groove member 514 is provided with mounting holes, one end of the sample container 52 passes through the mounting hole on one groove sidewall, and the other end of the sample container 52 passes through the mounting hole on the other groove sidewall. In alternative embodiments of the groove 511, the groove 511 can also be integrally formed with the reagent kit top cover 513 or the reagent kit side plate 513.

[0040] like Figure 2 and Figure 7 As shown, the blood oxygen measurement module includes an ultrasonic device 3, a light-emitting device 4, and a spectrometer 6. The module also includes a mounting bracket 21 installed outside the main unit bracket 11. The ultrasonic device 3, light-emitting device 4, and spectrometer 6 are directly or indirectly mounted on the mounting bracket 21. The ultrasonic device 3 emits ultrasonic waves to the sample container 52 at the sample container test chamber location, acting on the test liquid inside the sample container 52. Further, the ultrasonic waves emitted by the ultrasonic device 3 are used to break up blood cells in the test liquid within the blood oxygen testing channel of the sample container 52, releasing hemoglobin from the blood cells. The detection light emitted by the light-emitting device 4 can pass through the blood oxygen testing channel of the sample container 52 at the sample container test chamber location. The detection light emitted from the sample container 52 is then received by an optical fiber 33. After receiving the detection light, the optical fiber 33 guides it to the spectrometer 6 connected to the optical fiber 33. The spectrometer 6 analyzes the intensity of the received detection light and converts it into an electrical signal, which is then transmitted to the analyzer main unit. The analyzer main unit analyzes this electrical signal to calculate blood oxygen saturation and other blood oxygen parameters. The analyzer host is also used to output blood oxygen saturation and other blood oxygen parameters of the test solution. The blood gas analyzer shown in this application can simultaneously measure blood gas parameters and blood oxygen parameters of the test solution on a single host device, and can complete the measurement of more parameters of the test solution and output test results, thus having enhanced functionality.

[0041] In some embodiments of this application, the ultrasonic device 3 and the light-emitting device 4 can move along a direction close to the sample container 52, and also along a direction away from the sample container 52. Further, the ultrasonic device 3 can move to contact the sample container 52, and the light-emitting device 4 can also move to contact the sample container 52, with the ultrasonic device 3 and the light-emitting device 4 located on opposite sides of the sample container 52. When the ultrasonic device 3 and the light-emitting device 4 move to contact the sample container 52, they can fix the sample container 52 in place, ensuring that their positions are essentially the same for each test, thus reducing measurement errors. When the ultrasonic device 3 and the light-emitting device 4 are spaced apart from the sample container 52, the sample container 52 will not rub against the ultrasonic device 3 and the light-emitting device 4 during insertion and removal, avoiding the risk of damage to the sample container 52. Simultaneously, the ultrasonic device 3 and the light-emitting device 4 will not obstruct the insertion and removal of the reagent kit 5.

[0042] In some embodiments of this application, the ultrasound device 3 can be partially or completely moved into the groove 511 and contact the sample container 52, and the ultrasound device 3 as a whole can be moved out of the groove 511. The light-emitting device 4 can be partially or completely moved into the groove 511 and contact the sample container 52, and the light-emitting device 4 as a whole can be moved out of the groove 511. Further, when the ultrasound device 3 and the light-emitting device 4 are both moved out of the groove 511, one of the ultrasound device 3 and the light-emitting device 4 is located above the top wall of the reagent kit 51, and the other is located outside the side wall of the reagent kit 51. For example, the ultrasound device 3 is located above the top wall of the reagent kit 51, and the light-emitting device 4 is located outside the side wall of the reagent kit 51.

[0043] like Figures 8 to 12 As shown, in some embodiments, the sample container 52 includes a sample container body 521, the interior of which has a sample chamber for containing a sample. Both ends of the sample container body 521 are provided with liquid guide tubes 522 communicating with the sample chamber. One end of the liquid guide tube 522 communicates with the sample chamber, and the other end is located inside the reagent kit 51. In this embodiment, the blood oxygen testing channel includes the sample chamber of the sample container body 521 and the tubing of the liquid guide tube 522. The reagent kit 51 has a connecting tube that can communicate with the two liquid guide tubes 522 of the sample container 52. The reagent pack in the reagent kit 51 can provide test solution to the sample chamber inside the sample container body 521 through the connecting tube and the liquid guide tube 522.

[0044] like Figures 8 to 12As shown, in some embodiments, flexible sleeves 523 are connected to both ends of the sample container body 521. The flexible sleeves 523 are used to connect the sample container body 521 to the reagent kit 51. A liquid guide tube 522 passes through the flexible sleeve 523. The flexible sleeve 523 refers to a sleeve that can undergo elastic deformation when subjected to a certain limit of external force, that is, it deforms when subjected to a certain limit of external force and can recover its deformation after the external force is removed. When the sample container body 521 is not moved, the flexible sleeve 523 can be fixedly connected to the sample container body 521 and the box wall of the reagent kit 51, so that the sample container body 521 is fixedly connected to the reagent kit 51. When the sample container body 521 is moved by external force, the flexible sleeve 523 allows the sample container body 521 and the liquid guide tube 522 to move through its own elastic deformation. The flexible sleeve 523 can prevent direct contact between the liquid guide tube 522 and the top cover 512 of the reagent kit. The flexible sleeve 523 can deform to a certain extent, maintaining a stable connection between the sample container 52 and the reagent kit 51 while allowing the sample container 52 and the liquid guide tube 522 to move within a limited range. This can minimize the resistance encountered by the liquid guide tube 522 and the sample container body 521 when they need to move, and prevent the liquid guide tube 522 and the reagent kit 51 from separating due to pressure on the sample container body 521.

[0045] like Figures 8 to 12 As shown, in some embodiments, the sample container body 521 includes two parallel light-transmitting plates 5211 through which detection light can pass. The detection light is incident and emitted perpendicularly to the surface of the light-transmitting plate 511. The normal of the surface of the light-transmitting plate 5211 is inclined relative to both the reagent kit top cover 512 and the reagent kit side plate 513, and the reagent kit top cover 512 and the reagent kit side plate 513 are located on opposite sides of the light-transmitting plate 5211. In some embodiments, the normal of the surface of the light-transmitting plate 5211 is the same as the direction of movement of the light-emitting device 4. The bottom wall of the groove 511 is parallel to the normal of the surface of the light-transmitting plate 5211, and there is a gap between the bottom wall of the groove 511 and the sample container 52. This reduces the space occupied by the groove 511 on the reagent kit 51 without substantially affecting the movement of the ultrasound device 3 and the light-emitting device 4 into the groove 511. With the ultrasound device 3 and the light-emitting device 4 not in contact with the sample container 52, the ultrasound device 3 is located above the top wall of the reagent kit 51, and the light-emitting device 4 is located outside the side wall of the reagent kit 51.

[0046] like Figure 5 , Figure 9 and Figure 10As shown, in some embodiments, the angle between the bottom wall of the groove 511 and the top cover 513 of the reagent kit is 30°-60°, and the angle between the bottom wall of the groove 511 and the side plate 513 of the reagent kit is 30°-60°. The normal of the light-transmitting plate 5211 of the sample container 52 is approximately parallel to the bottom wall of the groove 511. "Approximately parallel" can be understood as the acute angle between the normal of the light-transmitting plate 5211 and the bottom wall of the groove 511 being less than 10°. More preferably, the angle between the normal of the surface of the light-transmitting plate 5211 of the sample container 52 and the top cover 513 of the reagent kit is 45°, and the angle between the normal of the surface of the light-transmitting plate 5211 and the side plate 513 of the reagent kit is also 45°. This arrangement reduces the overall volume occupied by the ultrasound device 4 and the light-emitting device 3 while preventing the movement of the ultrasound device 4 and the light-emitting device 3 from affecting the internal structure of the reagent kit 51.

[0047] like Figures 8 to 12 As shown, in some embodiments, the flexible cannula 523 includes a cannula body portion 5231 and a cannula connecting portion 5232. The cannula body portion 5231 is connected to the cannula connecting portion 5232, which is sleeved on the end of the sample container body 521. The cannula body portion 5231 is used to connect to the reagent kit 51. The inner wall surface of the cannula connecting portion 5232 contacts the outer wall surface of the sample container body 521 to fix the sample container body 521. Further, a liquid guide tube 522 passes through the internal channel of the cannula body portion 5231. The inner wall surface of the cannula body portion 5231 is not in contact with the outer wall surface of the liquid guide tube 522, so that the liquid guide tube 522 can move within the cannula body portion 5231. The cross-sectional dimension of the cannula body portion 5231 is smaller than the cross-sectional dimension of the cannula connecting portion 5232, and the axial length of the cannula body portion 5231 is greater than the axial length of the cannula connecting portion 5232. The sleeve connection portion 5232 can support the sleeve body portion 5231 to reduce the contact between the sleeve body portion 5231 and the liquid guide tube 522, thereby forming a space for the liquid guide tube 522 to move.

[0048] like Figures 8 to 12 As shown, in some embodiments, the flexible sleeve 523 further includes a sleeve limiting portion 5233, which and the sleeve connecting portion 5232 are respectively connected to the two axial ends of the sleeve body portion 5231; the cross-sectional dimension of the sleeve limiting portion 5233 is larger than the cross-sectional dimension of the sleeve body portion 5231. The sleeve limiting portion 5233 is used to limit the range of movement of the sleeve body portion 5231 along its axial direction, thereby preventing the flexible sleeve 523 from falling off the reagent kit 51. It can be understood that the side of the sleeve limiting portion 5233 facing the sleeve connecting portion 5232 is used to abut against the wall of the reagent kit 51.

[0049] like Figures 8 to 12As shown, in some embodiments, the sample container body 521 is provided with a positioning hole 521a, which is used to cooperate with the positioning post in the light-emitting device 4 so that the sample container body 521 and the light-emitting device 4 can be aligned as much as possible. Here, "cooperate" means that the positioning post in the light-emitting device 4 can be inserted into the positioning hole 521a.

[0050] In one embodiment of this application, the testing process and principle of the blood gas analyzer comprising a sample container 52 and a reagent kit 51 integrated into a reagent kit assembly 5 are as follows: After the test card assembly and the reagent kit assembly 5 are installed in the main unit bracket 11, during the calibration process before testing, the delivery pump drives the calibration solution to first flow into the blood gas testing channel within the test card assembly for blood gas parameter calibration, then through the blood oxygen testing channel within the sample container 52, and finally back into the waste liquid bag inside the reagent kit 51. During the testing process after calibration, the test solution inside the syringe or capillary at the sampling needle port 133 is drawn into the connecting tubing within the reagent kit 51. The test solution first flows into the blood gas testing channel within the test card assembly for blood gas parameter measurement, then flows into the blood oxygen testing channel within the sample container 52 for blood oxygen parameter measurement, and finally back into the waste liquid bag inside the reagent kit 51. During the cleaning process after testing, the cleaning solution in reagent kit 51 flows back to the waste bag through the connecting tubing inside reagent kit 51, the blood gas testing channel in the test card, and the blood oxygen testing channel in sample container 52, completing the cleaning of all tubing and preparing for the next use. The detection electrodes in the test card assembly can measure parameters such as oxygen partial pressure (dissolved oxygen in blood), pH value, carbon dioxide partial pressure, and electrolyte concentration in the calibration solution or test solution, and transmit the blood gas parameter measurement results to the analyzer host; the blood oxygen measurement module can measure blood oxygen saturation (different from oxygen partial pressure) and other indicators in the test solution in sample container 52, and transmit the blood oxygen parameter measurement results to the analyzer host. It can be understood that the order in which the calibration solution or test solution enters the test card assembly for blood gas parameter measurement and enters the sample container 52 for blood oxygen parameter measurement can be reversed. The test solution can also enter the test card assembly and the sample container 52 through independent tubing to complete the blood gas parameter measurement and blood oxygen parameter measurement respectively.

[0051] During blood oxygenation measurement, on the one hand, the ultrasonic device 3 needs to transmit vibrations more effectively to the test liquid in the sample container 52 to fully break down blood cells in the test liquid, and on the other hand, the optical fiber 33 needs to be as close as possible to the sample container 52 to better receive the detection light. Therefore, the ultrasonic device 3 should be in contact with the sample container 52 as much as possible during blood oxygenation measurement. On the other hand, to avoid the intensity and optical path instability of the detection light entering the sample container 52 affecting the accuracy of the blood oxygenation measurement results, the light-emitting device 4 should also be in contact with the sample container 52 as much as possible. Therefore, the gap between the ultrasonic device 3 and the light-emitting device 4 during the test needs to be designed to be very small, almost equal to the thickness of the sample container 52. In some related technologies, the sample container 52, the ultrasonic device 3, and the light-emitting device 4 are usually fixed inside the main unit of the blood gas analyzer and cannot be moved. Once the sample container 52 malfunctions, it needs to be returned to the factory for repair, which is a troublesome and time-consuming process. In some other related technologies, the sample container 52 is replaceably positioned between the ultrasound device 3 and the light-emitting device 4. Since the gap can only be designed to be very small, the sample container 52 will be worn during insertion and removal. The damage marks on the surface of the sample container 52 will scatter the light, affecting the accuracy and precision of the blood oxygen parameter measurement.

[0052] To address the aforementioned technical problems, this application further proposes a blood gas analyzer in which the sample container 52 and reagent kit 51 are used as a whole as consumables, and the ultrasound device 3 and luminescence device 4 are movable. Figure 13 and Figure 14 As shown, the sample container 52 has a first side and a second side arranged opposite to each other, and the ultrasonic device 3 and the light-emitting device 4 have a testing state and a separation state during the movement. Figure 13 This is a schematic diagram showing the positional relationship between the ultrasonic device 3 and the light-emitting device 4 and the sample container 52 when they are in the testing state. Figure 14 This diagram illustrates the positional relationship between the ultrasonic device 3 and the light-emitting device 4 and the sample container 52 when they are separated. When the ultrasonic device 3 and the light-emitting device 4 are in the testing state, the ultrasonic device 3 is in contact with the first side of the sample container 52, and the light-emitting device 4 is in contact with the second side of the sample container 52. When the ultrasonic device 3 and the light-emitting device 4 are separated, the ultrasonic device 3 is spaced apart from the first side of the sample container 52, and the light-emitting device 4 is spaced apart from the second side of the sample container 52. Figure 14In this diagram, a three-dimensional coordinate system is established with the wide side of the mounting bracket 21 as the X-axis, the long side of the mounting bracket 21 as the Y-axis, and the height of the mounting bracket 21 as the Z-axis. Direction a represents the insertion direction of the reagent kit component 5, which is in the same direction as the opposite of the X-axis. The removal direction of the reagent kit component 5 is the same as the positive direction of the X-axis. Direction b represents the direction of motion of the ultrasound device 3 as it moves away from the sample container 52 in a straight line. Direction c represents the direction of motion of the luminescent device 4 as it moves away from the sample container 52 in a straight line. Directions c and b are on the same straight line and in opposite directions, and both directions c and b are perpendicular to direction a.

[0053] The embodiment of this application employs a movable structure design for the ultrasonic device 3 and the light-emitting device 4. Before the sample container 52 needs to be loaded or removed, the ultrasonic device 3 and the light-emitting device 4 are moved to a separated state. At this time, the ultrasonic device 3 and the light-emitting device 4 will not obstruct the loading or removal of the sample container 52. The sample container 52 will not be damaged due to friction caused by contact with the ultrasonic device 3 or the light-emitting device 4 during the assembly and disassembly process, thereby avoiding the scattering of light by the surface wear of the sample container 52, which would affect the measurement accuracy of blood oxygen saturation and other blood oxygen parameters. During the measurement of blood oxygen saturation and other blood oxygen parameters, the ultrasonic device 3 and the light-emitting device 4 are moved to contact the sample container 52 under external force. The ultrasonic device 3 contacts the sample container 52 from the first side, and the light-emitting device 4 contacts the sample container 52 from the second side. At this time, the gap between the ultrasonic device 3 and the light-emitting device 4 is equal to or almost equal to the thickness of the sample container 52. When the ultrasonic device 3 and the sample container 52 are in contact, the ultrasonic device 3 can effectively transmit vibrations to the test liquid inside the sample container 52, improving the disruption effect of blood cells in the test liquid. Because the optical fiber 33 is very close to the sample container 52, it can better receive the detection light transmitted through the sample container 52. Furthermore, with both the ultrasonic device 3 and the light-emitting device 4 in contact with the sample container 52, even if there is a slight deviation in the position of the sample container 52 itself, the relative positional relationship between the ultrasonic device 3, the light-emitting device 4, and the sample container 52 remains fixed or substantially fixed. This ensures that the measurement accuracy and precision are kept as consistent as possible for each measurement. Based on the premise that the sample container 52 can be used as a replaceable consumable, this application reduces surface wear on the sample container 52 by making the ultrasonic device 3 and the light-emitting device 4 movable structures, while ensuring sufficient contact between the ultrasonic device 3 and the sample container 52, and between the light-emitting device 4 and the sample container 52 during testing, thus guaranteeing the consistency of blood oxygen parameter measurement results.

[0054] like Figure 13 and Figure 14As shown, in some embodiments, the ultrasonic device 3 and the light-emitting device 4 can synchronously approach or move away from the sample container 52 at the sample container test chamber under external force. That is, the movement of the ultrasonic device 3 and the movement of the light-emitting device 4 are synchronized. When the ultrasonic device 3 moves to a position contacting the first side of the sample container 52, the light-emitting device 4 synchronously moves to a position contacting the second side of the sample container 52. Since the sample container 52 is small and connected to the reagent kit 51, the simultaneous contact of the ultrasonic device 3 and the light-emitting device 4 with the sample container 52 can avoid the problem of excessive displacement and local damage to the sample container 52 caused by one of the ultrasonic device 3 and the light-emitting device 4 contacting the sample container 52 first. In an alternative embodiment, the ultrasonic device 3 and the light-emitting device 4 can approach or move away from the sample container 52 at the sample container test chamber in stages under external force. For example, during the process of the ultrasonic device 3 and the light-emitting device 4 approaching the sample container 52, the ultrasonic device 3 first approaches and contacts the first side of the sample container 52 under external force, and then the light-emitting device 4 approaches and contacts the second side of the sample container 52 under external force. Of course, the movement sequence of the ultrasonic device 3 and the light-emitting device 4 can also be reversed. In this case, it is necessary to precisely control the movement distance of the ultrasonic device 3 and the light-emitting device 4 to avoid collisions with the sample container 52 or excessive gaps between them. The control precision requirements are relatively high, and the risk of damage to the sample container 52 is also greater. The ultrasonic device 3 and the light-emitting device 4 can be driven by a drive motor, or they can be driven manually.

[0055] like Figure 13 and Figure 14As shown, in some embodiments, the ultrasonic device 3 faces the first side of the sample container 52, and the light-emitting device 4 faces the second side of the sample container 52. Driven by an external force, the ultrasonic device 3 moves in a straight line, approaching or moving away from the sample container 52 at the sample container's test chamber. The light-emitting device 4 also moves in a straight line, approaching or moving away from the sample container 52 at the sample container's test chamber. Further, the ultrasonic device 3 and the light-emitting device 4 move in the same straight line. When both the ultrasonic device 3 and the light-emitting device 4 move towards the sample container 52, their directions of movement are opposite. With this arrangement, when both the ultrasonic device 3 and the light-emitting device 4 reach a position in contact with the sample container 52, the forces on both sides of the sample container 52 are opposite and more evenly distributed, thereby preventing the sample container 52 from deflecting or breaking when clamped by the ultrasonic device 3 and the light-emitting device 4. In alternative embodiments, the ultrasonic device 3 and the light-emitting device 4 may not always be located on opposite sides of the sample container test chamber, but can move to opposite sides of the sample container test chamber by means of rotation, etc.; for example, the ultrasonic device 3 is connected to a rotatable swing arm, and the light-emitting device 4 is connected to another rotatable swing arm. During the swinging process, the ultrasonic device 3 can rotate to one side of the sample container 52 or rotate out from one side of the sample container 52, and the light-emitting device 4 can rotate to the other side of the sample container 52 or rotate out from the other side of the sample container 52. It is understood here that the operation mode of the ultrasonic device 3 and the light-emitting device 4 is not limited to the above-mentioned linear or rotational movement mode, but can also be a combination of linear and rotational movement. Any movement mode in which the ultrasonic device 3 and the light-emitting device 4 can move to both sides of the sample container 52 and move away from both sides of the sample container 52 is within the protection scope of this application.

[0056] like Figure 3 , Figure 15 and Figure 16As shown, in some embodiments, the main unit support 11 is provided with a sample container test chamber opening, which is configured to expose the sample container 52 at the sample container test chamber. The sample container test chamber opening includes a top surface opening 111a located on the top plate 111 of the main unit support and a side surface opening 112a located on the side plate 112 of the main unit support. The mounting bracket 21 includes a first side surface 21a and a second side surface 21b of the bracket arranged adjacent to each other at an angle. The first side surface 21a is aligned with the top plate 111 of the main unit support, and the second side surface 21b is aligned with the side plate 112 of the main unit support. The first side surface 21a of the bracket forms a first side support opening that is aligned with and communicates with the top surface opening 111a, and the second side surface 21b of the bracket forms a second side support opening that is aligned with and communicates with the side surface opening 112a. During movement, the ultrasound device 3 can extend into or out of the groove 511 through the first side support opening and the top surface opening 111a; the light-emitting device 4 can extend into or out of the groove 511 through the second side support opening and the side surface opening 112a during movement.

[0057] like Figure 7 , Figures 17 to 23 As shown, in some embodiments of this application, the blood oxygen measurement module includes a drive actuator 2. The drive actuator 2 includes a mounting bracket 21 and a drive motor 22. The ultrasound device 3 and the light-emitting device 4 are driven by the same drive motor 22 to move the sample container 52 near or away from the sample container test chamber. Using only a single drive motor 22 to simultaneously drive both the ultrasound device 3 and the light-emitting device 4 reduces the number of drive motors 22, achieving a compact design of the overall structure. Furthermore, the simultaneous driving of both the ultrasound device 3 and the light-emitting device 4 by a single drive motor 22 also simplifies the synchronous start and stop of the ultrasound device 3 and the light-emitting device 4. In an alternative embodiment, two drive motors can be mounted on the mounting bracket 21. One drive motor drives the ultrasound device 3 to move near or away from the sample container test chamber, and the other drive motor drives the light-emitting device 4 to move near or away from the sample container test chamber.

[0058] like Figures 17 to 23As shown, in some embodiments of this application, the mounting bracket 21 is fixed to the outside of the main unit bracket 11, and the mounting bracket 21 has a semi-open cavity structure. Further, the mounting bracket 21 includes two half-shell brackets, which enclose the mounting bracket 21, and the cavity structure is located between the two half-shell brackets. In some embodiments, the drive motor 22 is mounted at one end of the mounting bracket 21, and the ultrasonic device 3 and the light-emitting device 4 are both partially or entirely located within the cavity structure enclosed by the mounting bracket 21. The ultrasonic device 3 and the light-emitting device 4 are slidably connected to the mounting bracket 21 along the same straight line direction, and can slide in opposite directions on the mounting bracket 21 under the drive of the drive motor 22. With this configuration, the mounting bracket 21 with the cavity structure can constrain the ultrasonic device 3 and the light-emitting device 4 within itself. Compared to using only a single plate for the ultrasonic device 3 and the light-emitting device 4 to slide on, this improves the stability of the ultrasonic device 3 and the light-emitting device 4 during the sliding process, thereby improving the positional movement accuracy of the ultrasonic device 3 and the light-emitting device 4.

[0059] like Figures 17 to 23 As shown, in some embodiments, the inner wall of the mounting bracket 21 is provided with a guide, and both the ultrasonic device 3 and the light-emitting device 4 can reciprocate along the guide direction of the guide under the drive of the drive motor 22. In some embodiments of the guide, the guide can specifically be a first guide rail 211 and a second guide rail 212 provided on the inner wall of the mounting bracket 21, and the guide directions of the first guide rail 211 and the second guide rail 212 are collinear or approximately parallel. "Approximately parallel" means that the acute angle formed by the guide directions of the first guide rail 211 and the second guide rail 212 is less than 10°. There are multiple first guide rails 211 and second guide rails 212. Each half-shell bracket of the mounting bracket 21 is provided with at least two first guide rails 211 and at least two second guide rails 212. Multiple first guide rails 211 are parallel and located at the four corners or four sides of the long quadrangular prism space, and multiple second guide rails 212 are parallel and located at the four corners or four sides of the long quadrangular prism space. The ultrasonic device 3 is slidably connected between multiple first guide rails 211, and the light-emitting device 4 is slidably connected between multiple second guide rails 212. The ultrasonic device 3 and the light-emitting device 4 move within the cavity structure of the mounting bracket 21. The arrangement of multiple first guide rails 211 and multiple second guide rails 212 can further improve the stability of the ultrasonic device 3 and the light-emitting device 4 during the sliding process. In other embodiments of the guide, the guide can also be a guide groove structure provided on the inner wall of the mounting bracket 21, or multiple guide rods fixed inside the mounting bracket 21, as long as the guide can guide the ultrasonic device 3 and the light-emitting device 4 to reciprocate in a linear direction.

[0060] like Figures 17 to 23As shown, in some embodiments, the ultrasonic device 3 includes an ultrasonic mounting bracket 31 and an ultrasonic transducer 32 fixed on the ultrasonic mounting bracket 31. The ultrasonic mounting bracket 31 is slidably disposed on the mounting bracket 21. Further, the ultrasonic mounting bracket 31 is slidably connected to multiple first guide rails 211 of the mounting bracket 21. The ultrasonic transducer 32 is used to emit ultrasonic waves. The light-emitting device 4 includes a light source mounting bracket 41 and a light-emitting component fixed on the light source mounting bracket 41. The light source mounting bracket 41 is slidably disposed on the mounting bracket 21. Further, the light source mounting bracket 41 is slidably connected to four second guide rails 212 of the mounting bracket 21, and the light-emitting component is used to emit detection light. Preferably, the guiding direction of the first guide rail 211, the vibration direction of the ultrasonic transducer 32, and the emission direction of the detection light from the light-emitting component are collinear or substantially parallel; wherein substantially parallel means that the angle between the two directions is less than 10°.

[0061] like Figures 17 to 23 As shown, since the overall length of the light source mounting bracket 41 is relatively long, the second guide rail 212 is provided with multiple sections on the mounting bracket 21. Different sections of the light source mounting bracket 41 slide on different sections of the second guide rail 212, so that the long light source mounting bracket 41 can still maintain a stable linear motion.

[0062] like Figures 17 to 23 As shown, in some embodiments, the drive actuator 2 includes a main drive assembly and a synchronous drive assembly. The main drive assembly is driven between the drive motor 22 and the ultrasonic device 3, or between the drive motor 22 and the light-emitting device 4, and the synchronous drive assembly is driven between the ultrasonic device 3 and the light-emitting device 4. The synchronous drive assembly is located within the cavity structure of the mounting bracket 21. When one of the ultrasonic device 3 and the light-emitting device 4 slides under the drive of the drive motor 22, the synchronous drive assembly drives the other of the ultrasonic device 3 and the light-emitting device 4 to slide in the opposite direction. This arrangement allows the synchronous drive assembly to enable the ultrasonic device 3 and the light-emitting device 4 to move synchronously, and to simultaneously contact the sample container 52. In an alternative embodiment, the drive actuator 2 includes a main drive assembly, with both the ultrasonic device 3 and the light-emitting device 4 directly driven to the main drive assembly, and the drive motor simultaneously drives the ultrasonic device 3 and the light-emitting device 4 to slide in opposite directions via the main drive assembly.

[0063] like Figures 17 to 23As shown, the main transmission assembly specifically includes a lead screw transmission assembly connected between the drive motor 22 and the ultrasonic device 3. The lead screw transmission assembly includes a slider 28 that moves linearly within the mounting bracket 21. The lead screw transmission assembly is used to convert the rotational motion of the drive motor 22 into the linear reciprocating motion of the slider 28. The main transmission assembly also includes a rigid force transmission member 24 and a first fixing pin 23. The first fixing pin 23 is fixedly connected to the mounting bracket 21, passes through the rigid force transmission member 24, and the rigid force transmission member 24 can rotate around the first fixing pin 23.

[0064] Reference Figure 20 As shown, in some embodiments, the slider 28 is provided with a first guide groove 28a, and the ultrasonic mounting bracket 31 is provided with a second guide groove 31a. The main transmission assembly includes a first transmission pin 241 and a second transmission pin 242. The first transmission pin 241 is disposed in the first guide groove 28a and can slide along the first guide groove 28a, and the second transmission pin 242 is disposed in the second guide groove 31a and can slide along the second guide groove 31a. The rigid force transmission member 24 is fixedly connected to the first transmission pin 241 and the second transmission pin 242. Further, the first transmission pin 241, the second transmission pin 242 and the first fixed pin 23 are spaced apart, and the second transmission pin 242 is located between the first transmission pin 241 and the first fixed pin 23. It can be understood that the rigid force transmission member 24 can rotate around the first fixed pin 23, and when the rigid force transmission member 24 rotates, the first transmission pin 241 and the second transmission pin 242 also move along an arc around the first fixed pin 23.

[0065] In some further embodiments, the slider 28 has first guide grooves 28a on both sides, and the ultrasonic mounting bracket 31 has second guide grooves 31a on both sides. The rigid force transmission member 24 is located in the space between the pair of first guide grooves 28a and the pair of second guide grooves 31a. The two ends of the first transmission pin 241 extend into the two first guide grooves 28a respectively and are slidably engaged with the two first guide grooves 28a. The two ends of the second transmission pin 242 extend into the two second guide grooves 31a respectively and are slidably engaged with the two second guide grooves 31a. The first guide grooves 28a and the second guide grooves 31a are both strip-shaped grooves. The length direction of the first guide groove 28a intersects the sliding direction of the slider 28, and the length direction of the second guide groove 31a is approximately parallel to the length direction of the first guide groove 28a, where approximately parallel means that the included angle between the two directions is less than 10°.

[0066] It can be understood that when the slider 28 moves in a straight line, it pushes the first transmission pin 241 to move through the first guide groove 28a. The first transmission pin 241 further drives the rigid force transmission member 24 to rotate around the axis of the first fixed pin 23. The first guide groove 28a allows the first transmission pin 241 to move along an arc. The rotation of the rigid force transmission member 24 drives the second transmission pin 242 to move along an arc. Similarly, the second guide groove 31a allows the second transmission pin 242 to move along an arc. The second transmission pin 242 then drives the ultrasonic mounting bracket 31 and the ultrasonic transducer 32 to slide on the mounting bracket 21 through the second guide groove 31a.

[0067] like Figure 21 and Figure 22 As shown, in some embodiments, the rigid force transmission member 24 can be a rigid plate with a through hole in the middle, through which the optical fiber 33 can be routed. One end of the rigid plate can rotate around the first fixing pin 23, and a first transmission pin 241 and a second transmission pin 242 are fixed to the side of the rigid plate facing the mounting bracket 21. In an alternative embodiment, the rigid force transmission member 24 can also include a pair of rigid rods, through which the optical fiber 33 can be routed. One end of the pair of rigid rods can rotate around the first fixing pin 23, and a first transmission pin 241 and a second transmission pin 242 are fixed to the side of each rigid rod facing the mounting bracket 21.

[0068] like Figures 17 to 23 As shown, in some embodiments, the ultrasonic mounting bracket 31 is provided with a third guide groove 31b, and the light source mounting bracket 41 includes a bracket plate, on which the light-emitting component is fixedly mounted. The bracket plate is provided with a fourth guide groove 41a. The synchronous transmission assembly includes a second fixing pin 25 and a transmission rod 26. The second fixing pin 25 is fixedly mounted on the mounting bracket 21 and passes through the transmission rod 26, allowing the transmission rod 26 to rotate around the second fixing pin 25. The synchronous transmission assembly includes a third transmission pin 261 and a fourth transmission pin 262. The third transmission pin 261 passes through and slidably engages with the third guide groove 31b, and the fourth transmission pin 262 passes through and slidably engages with the fourth guide groove 41a. When the transmission rod 26 rotates around the second fixing pin 25, the third transmission pin 261 and the fourth transmission pin 262 also rotate around the second fixing pin 25.

[0069] Reference Figure 22 and Figure 23As shown, in some embodiments, the ultrasonic mounting bracket 31 has a third guide groove 31b on both sides. The light source mounting bracket 41 includes a pair of bracket plates, and the light-emitting component is installed between the pair of bracket plates. Each pair of bracket plates has a fourth guide groove 41a. The synchronous transmission assembly includes a pair of second fixing pins 25 and a pair of transmission rods 26. One second fixing pin 25 is fixedly connected to one half-shell bracket of the mounting bracket 21, and the other second fixing pin 25 is fixedly connected to the other half-shell bracket of the mounting bracket 21. Each second fixing pin 25 has a transmission rod 26, and the transmission rod 26 is rotatably arranged around the axis of the second fixing pin 25. The pair of transmission rods 26 are located on opposite sides of the ultrasonic mounting bracket 31. The transmission rod 26 has a third transmission pin 261 and a fourth transmission pin 262. The third transmission pin 261 extends into the third guide groove 31b and is slidably engaged with the third guide groove 31b. The fourth transmission pin 262 extends into the fourth guide groove 41a and is slidably engaged with the fourth guide groove 41a. Both the third guide groove 31b and the fourth guide groove 41a are strip-shaped grooves. The length directions of the third guide groove 31b and the fourth guide groove 41a are approximately parallel to the length direction of the first guide groove 28a; where approximately parallel means that the angle between their directions is less than 10°. When the ultrasonic mounting bracket 31 moves in a straight line, the ultrasonic mounting bracket 31 pushes the third transmission pin 261 to move through the third guide groove 31b. The third transmission pin 261 drives the transmission rod 26 and the fourth transmission pin 262 to rotate around the axis of the second fixed pin 25. The fourth transmission pin 262 drives the light source mounting bracket 41 and the light-emitting device 4 to slide along the second guide rail 212 through the fourth guide groove 41a. The third guide groove 31b is used to allow the third transmission pin 261 to move along an arc, and the fourth guide groove 41a is used to allow the fourth transmission pin 262 to move along an arc.

[0070] This drive actuator 2, composed of a drive motor 22, a lead screw drive assembly, a rigid force transmission component 24, a first fixing pin 23, a transmission rod 26, and a second fixing pin 25, forms a linkage transmission mechanism with the slider 28 of the lead screw drive assembly, the rigid force transmission component 24, and the ultrasonic mounting bracket 31. Similarly, the ultrasonic mounting bracket 31, the transmission rod 26, and the light source mounting bracket 41 also form a linkage transmission mechanism. The entire drive actuator 2's transmission mechanism is primarily assembled using linkages. Compared to other transmission mechanisms such as gears, this avoids backlash and collisions between gears during reverse movement. Furthermore, it is easier to process and assemble, resulting in relatively low manufacturing costs and suitability for mass production. Moreover, the key to using a linkage mechanism is that the length and connection method of each link can be rationally designed, easily converting rotational motion into reciprocating linear motion of the ultrasonic transducer 32 and the light-emitting component. Compared to gear or chain drives, it does not require external lubrication, resulting in lower maintenance costs and contributing to maintaining the cleanliness of the blood gas analyzer's working environment.

[0071] like Figures 17 to 23 As shown, the second transmission pin 242 is located between the first transmission pin 241 and the first fixed pin 23. This arrangement ensures that the travel distance of the second transmission pin 242 is less than that of the first transmission pin 241, and the travel distance error of the second transmission pin 242 is also less than that of the first transmission pin 241, thus improving the accuracy of travel distance control for the ultrasonic mounting bracket 31 and the ultrasonic transducer 32. The second fixed pin 25 is located between the third transmission pin 261 and the fourth transmission pin 262. The transmission rod 26 effectively forms a transmission lever that rotates around the second fixed pin 25. The two lever arms of the transmission rod 26 are respectively connected to the ultrasonic mounting bracket 31 and the light source mounting bracket 41. When the ultrasonic mounting bracket 31 moves forward, the transmission rod 26 rotates around the second fixed pin 25, and the two lever arms of the transmission rod 26 rotate in opposite directions. Therefore, the movement direction of the light-emitting device 4 is opposite to that of the ultrasonic device 3, realizing the relative movement or back-to-back movement of the light-emitting device 4 and the ultrasonic device 3. This transmission method facilitates the design of the lengths of the two lever arms of the transmission rod 26, enabling flexible control of the relative movement distance between the ultrasonic device 3 and the light-emitting device 4. For example, if the two lever arms of the transmission rod 26 are of equal length, then the moving distances of the ultrasonic device 3 and the light-emitting device 4 are equal. However, if the two lever arms of the transmission rod 26 are of unequal length, the ratio of the moving distances of the ultrasonic device 3 and the light-emitting device 4 will also change accordingly. Furthermore, the length of the lever arms is very easy to adjust; this characteristic of the transmission rod 26 is not found in other transmission structures such as gears.

[0072] like Figures 17 to 23 As shown, in some embodiments, the length direction of the first guide groove 28a is perpendicular to the sliding direction of the slider 28, and the length directions of the second guide groove 31a, the third guide groove 31b and the fourth guide groove 41a are all parallel to the length direction of the first guide groove 28a.

[0073] like Figures 18 to 20 As shown, in some embodiments, a travel limit switch assembly 27 is fixed on the mounting bracket 21. The travel limit switch assembly 27 includes a travel limit switch. The ultrasonic mounting bracket 31 is provided with a position recognition component 36 that moves synchronously with the ultrasonic mounting bracket 31. When the position recognition component 36 moves to the position sensed by the travel limit switch, the travel limit switch sends a control signal to the motor controller of the drive motor 22 to stop the drive motor 22. Specifically, the travel limit switch can be an optocoupler switch. The setting of the travel limit switch can further control the movement accuracy of the ultrasonic device 3 and avoid the phenomenon that the ultrasonic device 3 moves too far and hits or pushes the sample container 52.

[0074] In some alternative embodiments, the output shaft of the drive motor is connected to a main transmission assembly, which includes a drive gear. The ultrasonic device 3 and the light-emitting device 4 are both connected to the drive gear via gear meshing. The ultrasonic device 3 and the light-emitting device 4 are respectively meshed at the two ends of the drive gear that are furthest apart, so that the ultrasonic device 3 and the light-emitting device 4 can move in opposite directions.

[0075] In some alternative embodiments, the synchronous transmission assembly includes a driven transmission gear, with the ultrasonic device 3 and the light-emitting device 4 meshing at the farthest ends of the driven transmission gear, so that the ultrasonic device 3 and the light-emitting device 4 can move in opposite directions. The drive motor 22 drives one of the ultrasonic device 3 and the light-emitting device 4 through the main transmission assembly, and drives the other of the ultrasonic device 3 and the light-emitting device 4 through the driven transmission gear, thereby achieving synchronous movement of the ultrasonic device 3 and the light-emitting device 4.

[0076] This blood gas analyzer integrates a reagent kit assembly 5 (containing a sample container 52) and a test card assembly into the analyzer host. When measuring blood gas parameters, the detection electrodes in the test card assembly measure parameters such as oxygen partial pressure (dissolved oxygen in blood), pH value, carbon dioxide partial pressure, and electrolyte concentration, and output electrical signals to the analyzer host. When measuring blood oxygen parameters, the sample is introduced into the sample container 52 via the reagent kit assembly 5. The ultrasonic device 3 and the light-emitting device 4 move to contact both sides of the sample container 52. The ultrasonic waves emitted by the ultrasonic device 3 act on the sample inside the sample container 52, and the detection light emitted by the light-emitting device 4 passes through the sample container 52 at the test chamber and then illuminates the optical fiber 33 inside the ultrasonic device 3. The optical fiber 33 receives the detection light and guides it to a spectrometer 6 connected to it. The spectrometer 6 analyzes the intensity of the received detection light and converts it into an electrical signal, which is then transmitted to the analyzer host. The analyzer host also outputs the blood gas and blood oxygen measurement parameters of the sample. When reagent kit component 5 is used in conjunction with ultrasound device 3 and light-emitting device 4 to measure blood oxygen parameters, ultrasound device 3 and light-emitting device 4 have separate and testing states during movement. When ultrasound device 3 and light-emitting device 4 are in the separated state, both ultrasound device 3 and light-emitting device 4 are completely outside the groove 511, so that reagent kit component 5 can be normally placed and removed without interference from ultrasound device 3 and light-emitting device 4. When ultrasound device 3 and light-emitting device 4 are in the testing state, ultrasound device 3 and light-emitting device 4 are partially located inside the groove 511 and respectively in contact with both sides of sample container 52 to perform blood oxygen parameter measurement.

[0077] like Figures 17 to 23As shown, the spectrometer 6 is fixedly connected to the ultrasonic mounting bracket 31 via the spectrometer mounting bracket 61. In actual use, not only will the optical fiber 33 move with the ultrasonic mounting bracket 31, but the spectrometer 6 will also move with the ultrasonic mounting bracket 31. This ensures that the optical fiber 33 can move synchronously with the spectrometer 6 and remain relatively stationary. Therefore, it can improve or eliminate the deformation and stress problems of the optical fiber 33 and ensure that the optical fiber 33 has a long service life.

[0078] like Figures 24 to 30 As shown, the ultrasonic device 3 includes an ultrasonic mounting bracket 31, an ultrasonic transducer 32, and an optical fiber 33. The ultrasonic transducer 32 is mounted on the ultrasonic mounting bracket 31 and has a wiring channel 321. The ultrasonic transducer 32 is connected to the ultrasonic mounting bracket 31 and can move under the action of the ultrasonic mounting bracket 31. The spectrometer 6 is fixedly connected to the ultrasonic mounting bracket 31. The optical receiving end 331a of the optical fiber 33 is located in the wiring channel 321, and the optical output end 331b of the optical fiber 33 is connected to the spectrometer 6. The optical fiber 33 is used to guide the optical signal into the spectrometer 6, and the spectrometer 6 is used to analyze the optical signal and send the analysis results to the analyzer host.

[0079] like Figures 24 to 30 As shown, the ultrasonic device 3 includes an ultrasonic mounting bracket 31, an ultrasonic transducer 32, and an optical fiber 33. The ultrasonic transducer 32 is mounted on the ultrasonic mounting bracket 31 and has a wiring channel 321. The ultrasonic transducer 32 is connected to the ultrasonic mounting bracket 31 and can move under the influence of the ultrasonic mounting bracket 31. The spectrometer 6 is fixedly connected to the ultrasonic mounting bracket 31. The optical receiving end 331a of the optical fiber 33 is disposed in the wiring channel 321, and the optical output end 331b of the optical fiber 33 is connected to the spectrometer 6. The optical fiber 33 is used to guide the optical signal into the spectrometer 6, and the spectrometer 6 is used to analyze the optical signal and send the analysis results to the analyzer host.

[0080] In some embodiments, the ultrasonic mounting bracket 31 may include several components, mainly used to support the ultrasonic transducer 32, the spectrometer 6, and the optical fiber 33, etc. The specific structure of the ultrasonic mounting bracket 31 is not limited here.

[0081] In some embodiments, the optical receiving end 331a of the optical fiber 33 is the end of the optical fiber 33 used to receive light. The optical receiving end 331a of the optical fiber 33 is inserted into the cable passage 321. This can be understood as at least the optical receiving end 331a of the optical fiber 33 is inserted into the cable passage 321. Either a portion of the optical receiving end 331a of the optical fiber 33 can be installed in the cable passage 321, or the entire optical fiber 33 can be installed in the cable passage 321. There is no limitation here.

[0082] It is understood that in this application, the optical fiber 33 is placed in the wiring channel 321 of the ultrasonic transducer 32, and the spectrometer 6 is mounted on the ultrasonic mounting bracket 31. The optical fiber 33 and the spectrometer 6 can move synchronously with the ultrasonic transducer 32. That is to say, during use, not only will the optical fiber 33 move with the ultrasonic mounting bracket 31 and the ultrasonic transducer 32, but the spectrometer 6 will also move with the ultrasonic mounting bracket 31. This ensures that the optical fiber 33 can move synchronously with the spectrometer 6 and remain relatively stationary. Therefore, it can improve or eliminate the deformation and stress problems of the optical fiber 33 and ensure that the optical fiber 33 has a long service life.

[0083] In some implementations, refer to Figures 24 to 29 The ultrasonic device 3 may also include a locking element (not shown in the figure). The ultrasonic transducer 32 is provided with a locking hole 322 that communicates with the wire channel 321. The locking element is inserted into the locking hole 322 and pressed against the optical fiber 33. The locking element is used to restrict the rotation of the optical fiber 33 in its radial direction. This can prevent the optical fiber 33 from rotating relative to the ultrasonic transducer 32, further reduce the offset of the optical fiber 33 or the degree of stress damage, and further improve the service life of the optical fiber 33.

[0084] In some implementation methods, the main reference is... Figure 30 and Figure 31 The threading channel 321 extends along a first direction, and the locking hole 322 extends along a second direction. The first direction can be the length direction of the ultrasonic transducer 32, and the second direction intersects with the first direction. Alternatively, the locking hole 322 can be positioned in other directions, as long as it can restrict the radial movement of the optical fiber 33.

[0085] In some implementations, refer to Figures 25 to 31 The ultrasonic mounting bracket 31 includes a transducer bracket 311, a transducer mounting base 312, and a spectrometer connector 313. An ultrasonic transducer 32 is fixedly connected to the transducer mounting base 312, with one end of the ultrasonic transducer 32 protruding from the transducer mounting base 312. The transducer bracket 311 has a cavity, and the transducer mounting base 312 is installed within the cavity of the transducer bracket 311. The spectrometer 6 is mounted on the spectrometer mounting frame 61; specifically, the transducer bracket 311 and the spectrometer mounting frame 61 are connected via the spectrometer connector 313. This facilitates the installation of the ultrasonic transducer 32 and the spectrometer 6, and improves the structural compactness of the ultrasonic device. Part of the ultrasonic transducer 32 is located inside the transducer mounting base 312, while another part of the ultrasonic transducer 32 protrudes from the transducer mounting base 312 to facilitate contact with the sample container 52. This allows for easy installation of the ultrasonic transducer 32 and the spectrometer 6, and also improves the structural compactness of the ultrasonic device.

[0086] To avoid damaging the sample container 52 and to allow the ultrasound device 3 to better contact the surface of the sample container 52, thereby improving the accuracy of blood oxygen detection, in some embodiments, refer to... Figures 24 to 27 The ultrasonic device 3 also includes a first buffer 35. The spectrometer connector 313 includes a connecting plate 3131 and two connecting arms 3132 connected to the connecting plate 3131. The spectrometer mounting bracket 61 is provided with an extension arm 612. The connecting arm 3132 is connected to the extension arm 612. The connecting plate 3131 is connected to the transducer bracket 311. The first buffer 35 is located between the connecting plate 3131 and the transducer fixing seat 312. The opposite ends of the transducer fixing seat 312 respectively contact the cavity wall of the first buffer 35 and the transducer bracket 311. The first buffer 35 is used to absorb the impact force when the ultrasonic transducer 32 contacts the sample container 52, and to provide the ultrasonic transducer 32 with the clamping force to press it onto the sample container 52, and to absorb the vibration energy generated by the ultrasonic transducer 32 during operation to reduce vibration.

[0087] In some embodiments, the spectrometer connector 313 includes two connecting arms 3132, and the spectrometer mounting bracket 61 is provided with two extension arms 612, with the two connecting arms 3132 connected to the two extension arms 612 one-to-one.

[0088] In some embodiments, the first buffer 35 may be a spring or an elastic silicone body, etc., which is not limited here.

[0089] During operation, the two ends of the first buffer 35 can be compressed under the pressure of the spectrometer connector 313 and the transducer mounting base 312. When the transducer bracket 311 moves, it can drive the spectrometer connector 313 to move as well. The spectrometer connector 313 drives the spectrometer 6 to move, and simultaneously, through the first buffer 35, it pushes the ultrasonic transducer 32 to move. When the ultrasonic transducer 32 moves to the position of contacting the sample container 52, it is blocked by the sample container 52. The first buffer 35 is compressed under pressure, and then applies a reverse elastic force to the ultrasonic transducer 32, ensuring that the ultrasonic transducer 32 fully contacts the sample container 52. Furthermore, the buffering effect of the first buffer 35 effectively reduces the impact force from the ultrasonic transducer 32 on the sample container 52, thereby preventing damage to the sample container 52. Furthermore, since the first buffer 35 is located between the transducer mounting base 312 of the ultrasonic transducer 32 and the spectrometer connector 313, the first buffer 35 can also buffer the vibration from the ultrasonic transducer 32 at the same time, reduce the impact of the vibration of the ultrasonic transducer 32 on the spectrometer 6, and thus effectively prevent the spectrometer 6 from vibrating at high frequency along with the ultrasonic transducer 32.

[0090] In some implementations, refer to Figure 24 and Figure 27The ultrasonic device 3 may also include a position detection component for determining the position of the transducer support 311. When the transducer support is determined to be located at a preset detection point, the transducer support can be controlled to stop moving. It is understood that placing the position detection component on the transducer support 311 rather than directly on the ultrasonic transducer 32 is primarily to control the position of the transducer support 311 so that the ultrasonic transducer 32 can fully contact the sample container 52, which is beneficial for the transmission of ultrasonic waves and the reception of light, and further prevents the ultrasonic transducer 32 from crushing the sample container 52.

[0091] In some embodiments, when the ultrasonic transducer 32 is in a test state, it is located in a first position; when the ultrasonic transducer 32 is in a disengaged state, it is located in a second position. The transducer support 311 has a first detection position and a second detection position, and the distance between the first detection position and the second detection position is greater than the distance between the first position and the second position. When the position detection component detects that the transducer support 311 is located in the first detection position or the second detection position, the transducer support 311 is controlled to stop moving. That is, when the transducer support 311 moves from the second detection position to the first detection position, or from the first detection position to the second detection position, the transducer support 311 is controlled to stop moving.

[0092] To improve the accuracy of position detection, the position detection component can employ optical coupling detection. (Refer to...) Figure 26 As shown, in some embodiments, the position detection component includes a position identification component 36, which includes a first light-shielding plate and a second light-shielding plate. For example, the first light-shielding plate is used to identify a first detection position, and the second light-shielding plate is used to identify a second detection position. The first light-shielding plate is used for detection by a first optocoupler to determine that the transducer support 311 is located at the first detection position, and the second light-shielding plate is used for detection by a second optocoupler to determine that the transducer support 311 is located at the second detection position. When the first optocoupler detects the passing of the first light-shielding plate, it can determine that the transducer support 311 has reached the first detection position; when the second optocoupler detects the passing of the second light-shielding plate, it can determine that the transducer support 311 has reached the second detection position.

[0093] In some embodiments, the distance between the ultrasonic transducer 32 and the sample container 52 when the transducer 32 is in the separated state is less than the distance between the first detection position and the second detection position of the position marking component 36. Let a be the distance between the first and second detection positions, b be the distance between the ultrasonic transducer 32 and the sample container 52 when the transducer 32 is in the separated state, and c be the maximum elastic compression of the first buffer 35, satisfying the following relationship: ab ≤ c.

[0094] This embodiment uses the above-mentioned method of detecting the position of transducer support 311 instead of directly detecting the position of ultrasonic transducer 32. This allows the movable distance of transducer support 311 to be greater than that of ultrasonic transducer 32, providing a certain space for compression of the first buffer 35. This is beneficial to further improve the adequacy of ultrasonic transducer 32 contact with sample container 52, thereby improving the accuracy of blood oxygen detection.

[0095] In some implementations, refer to Figures 25 to 29 The ultrasonic mounting bracket 31 may further include a transducer fixing cover 315 and a second buffer 37. A mounting ring 323 may be provided on the outer peripheral wall of the ultrasonic transducer 32, and the mounting ring 323 is sandwiched between the transducer fixing cover 315 and the transducer fixing seat 312. The second buffer 37 is sandwiched between the transducer fixing cover 315 and the mounting ring 323 and is used to absorb the vibration energy generated by the ultrasonic transducer 32 during operation and reduce wear on the mounting ring 323. The transducer fixing seat 312 is sleeved on the outer periphery of the ultrasonic transducer 32, and the mounting ring 323 abuts against the end of the transducer fixing seat 312. The transducer fixing cover 315 covers the end of the transducer fixing seat 312. In some embodiments, an opening may be provided at the front end of the transducer mounting cover 315 (i.e., the end furthest from the spectrometer connector 313), and an opening may be provided at the rear end of the transducer mounting base 312 (i.e., the end closest to the spectrometer connector 313). The ultrasonic transducer 32 passes through these two openings so that both ends of the ultrasonic transducer 32 are exposed.

[0096] In some embodiments, the second buffer 37 may be a rubber pad or the like, but is not limited here.

[0097] It is understandable that, since the mounting ring 323 is clamped by the transducer mounting base 312 and the transducer mounting cover 315, the ultrasonic transducer 32 is thus fixed in place by the transducer mounting base 312 and the transducer mounting cover 315. The ultrasonic transducer 32 generates high-frequency vibrations during operation. The rubber pad can buffer the vibrations from the transducer, reducing noise and minimizing wear on the contact points of the mounting ring 323 caused by the vibrations of the ultrasonic transducer 32, thus ensuring its service life.

[0098] In some embodiments, the second buffer 37 is provided only on one side of the mounting ring 323, while the other side of the mounting ring 323 is not provided with the second buffer 37, resulting in a non-buffered contact between the mounting ring 323 and the transducer mounting base 312. Its function is to ensure that the ultrasonic waves emitted by the ultrasonic transducer 32 still have sufficient power to break up the blood cells in the sample container 52. It should be noted that if the second buffer 37 is provided on both sides, the energy of the ultrasonic transducer 32 will be significantly attenuated, thereby affecting the effect of the ultrasonic transducer 32 on breaking up blood cells.

[0099] In some implementations, refer to Figure 28 The mounting ring 323 has a non-rotationally symmetric structure. For example, the mounting ring 323 is circular with a notch 323a. The transducer mounting base 312 is provided with a receiving groove that fits the mounting ring 323. The mounting ring 323 is received in the receiving groove. The receiving groove and the notch 323a are used to restrict the rotation of the ultrasonic transducer 32.

[0100] In some embodiments, the mounting ring 323 is a non-rotationally symmetric structure, and the shape of the receiving groove is basically the same as that of the mounting ring 323. This can effectively prevent the ultrasonic transducer 32 from rotating on the transducer mounting base 312, thereby preventing the optical fiber 33 inside the ultrasonic transducer 32 from rotating as well, which helps to further improve the service life of the optical fiber 33.

[0101] In some implementations, refer to Figures 25 to 29 The ultrasonic transducer 32 may include a vibration source 324, a first vibrator 325, a second vibrator 326, and an electrode pair 327. The electrode pair 327 is electrically connected to the vibration source 324 and is used to connect to an external circuit. The first vibrator 325 and the second vibrator 326 are respectively disposed on both sides of the vibration source 324 and fixed by bolts. The mounting ring 323 is disposed close to the first vibrator 325 or the second vibrator 326 and is in contact with the vibration source 324.

[0102] In some embodiments, the vibration source 324 may be a piezoelectric ceramic or the like. The vibration source 324 may include one or more piezoelectric ceramics; in some embodiments, there may be two. The electrode pair 327 is mainly used to connect to an external circuit and apply an electric field to the piezoelectric ceramic to cause it to perform axial extension and contraction. The first vibrator 325 and the second vibrator 326 are respectively disposed on both sides of the vibration source 324. The first vibrator 325 and the second vibrator 326 are made of stainless steel or other metallic materials, and their main function is to adjust the overall vibration frequency of the ultrasonic transducer 32, enhance vibration stability, and improve energy conversion efficiency. The end face of the first vibrator 325 facing away from the second vibrator 326 is used to contact the sample container 52 during operation.

[0103] In some embodiments, the mounting ring 323 is positioned close to the piezoelectric ceramic in the ultrasonic transducer 32, where the amplitude is small. The amplitude of the transducer mounting cover 315 is also small, which helps to reduce the impact of vibration on the transducer bracket 311, the spectrometer connector 313, and the spectrometer 6.

[0104] In some embodiments, to facilitate the arrangement of wires, the transducer mounting base 312 may be provided with a wire passage 312a, which allows the wires connected to the electrode pair 327 to pass through.

[0105] In some embodiments, the ultrasonic transducer 32 is disposed through the transducer mounting base 312 and the transducer mounting cover 315, which exposes the second vibrator 326, thereby facilitating its full contact with the sample container 52, further improving the effect of the ultrasonic transducer 32 on breaking up blood cells, while also reducing the volume of the transducer mounting base 312 and the transducer mounting cover 315, which helps to save costs.

[0106] One end of the optical fiber 33 is located inside the ultrasonic transducer 32 of the ultrasonic device 3. When the ultrasonic device 3 is in use, it needs to move between the working position and the separation position, which will inevitably cause the optical fiber 33 to move accordingly. This will cause the optical fiber 33 to be deviated or damaged by stress inside the transducer, affecting the service life of the optical fiber 33.

[0107] In this regard, this application also makes improvements to the fiber optic mounting structure of the ultrasonic device 4, as follows: Reference Figure 25 , Figures 27 to 30 The ultrasonic transducer 32 is provided with a threading channel 321. The main function of the ultrasonic transducer 32 is to apply ultrasonic waves to cuvettes to break up blood cells in sample containers such as cuvettes. The optical fiber 33 includes an optical fiber body 331, on which a limiting sleeve 332 is provided. The optical fiber body 331 has a light receiving end 331a, a light output end 331b, and a light guiding section 331c located between the light receiving end 331a and the light output end 331b. The light output end 331b is suitable for connection to the spectrometer 6. The limiting sleeve 332 is sleeved on the outer periphery of the light receiving end 331a and part of the light guiding section 331c and inserted into the threading channel 321. The limiting sleeve 332 is used to restrict the movement of the light receiving end 331a along the axial direction of the optical fiber body 331.

[0108] During operation, the detection light emitted by the light-emitting device 4 of the blood gas analyzer passes through the sample container 52 and is emitted to the ultrasound device 4. It is received by the light receiving end 331a of the optical fiber 33 integrated in the ultrasound device 4, and then the detection light is transmitted to the spectrometer 6 through the light output end 331b via the light guide section 331c.

[0109] In some embodiments, the optical fiber body 331 may be a single-mode optical fiber 33 or a dual-mode optical fiber 33, etc., which is not limited here.

[0110] In some embodiments, the limiting sleeve 332 may be made of metal or plastic, preferably stainless steel, but this is not limited here.

[0111] It is understood that this application improves the fiber structure of the ultrasonic device 4. By setting a limiting sleeve 332 on the fiber body 331, the displacement or stress damage of the fiber 33 during the movement of the ultrasonic transducer 32 is reduced, and the service life of the fiber 33 is effectively improved.

[0112] To further reduce the offset or stress damage of optical fiber 33, in some embodiments, reference is made to... Figures 27 to 30 The optical fiber body 331 may further include a receiving section 331d connected to the light guide section 331c. The optical receiving end 331a is located at the end of the receiving section 331d opposite to the light guide section 331c, and the radial dimension of the receiving section 331d is larger than the radial dimension of the light guide section 331c. The limiting sleeve 332 includes a first protective tube 3321 and a second protective tube 3322 connected to the first protective tube 3321. The first protective tube 3321 is sleeved on the outer periphery of the receiving section 331d, and the receiving section 331d is disposed within the first protective tube 3321. The second protective tube 3322 is sleeved on the outer periphery of the portion of the light guide section 331c connected to the receiving section 331d, and the second protective tube 3322 is used to confine the optical receiving end 331a within the first protective tube 3321. Therefore, the receiving segment 331d cannot enter the second protective tube 3322, and the second protective tube 3322 can confine the receiving segment 331d inside the first protective tube 3321, thereby preventing the optical fiber 33 from shifting axially. This structure can better adapt to the structure of the receiving segment 331d of the optical fiber body 331, thereby improving the protection and limiting effect on the optical fiber 33.

[0113] Since the light output end 331b of the light guiding section 331c of the optical fiber 33 is usually pre-fixed to the spectrometer 6, and the cross-sectional size of the receiving section 331d of the optical fiber 33 is relatively large, how to better install the optical fiber 33 into the limiting sleeve 332 also needs to be considered and solved. Further, referring to... Figure 30 The second protective tube 3322 is provided with a clearance channel 3322a extending along its length. The clearance channel 3322a penetrates the entire sidewall of the second protective tube 3322 along its axial direction. The width of the clearance channel 3322a is greater than the radial dimension of the light guide segment 331c. The clearance channel 3322a is used to allow the light guide segment 331c to enter into the second protective tube 3322 during assembly. This helps to further improve the ease of assembly between the limiting sleeve 332 and the optical fiber body 331.

[0114] During assembly, the receiving segment 331d of the optical fiber 33 can be first assembled into the first protective tube 3321, and the light guiding segment 331c enters the second protective tube 3322 through the clearance channel 3322a on the side of the limiting sleeve 332. Then, the second protective tube 3322 is fixedly connected to the first protective tube 3321. In some embodiments, the second protective tube 3322 and the first protective tube 3321 can be connected by threads. The second protective tube 3322 can press the receiving segment 331d of the optical fiber 33 against the inner wall of the first protective tube 3321, so that the receiving segment 331d cannot move.

[0115] To enable the optical fiber 33 to receive as much detection light as possible and improve the accuracy of spectral analysis, in some embodiments, the end face of the first protective tube 3321 facing the light receiving end 331a is provided with a light transmission channel 3321a, and the radial dimension of the light transmission channel 3321a is smaller than the radial dimension of the light receiving end 331a, so as to confine the optical fiber 33 inside the first protective tube 3321. The light transmission channel 3321a communicates with the light input channel 325a of the ultrasonic transducer 32. The light transmission channel 3321a and the light input channel 325a can be coaxially arranged to ensure that the light is transmitted to the spectrometer 6 more effectively.

[0116] In some embodiments, the radial dimension of the light-transmitting channel 3321a is smaller than the radial dimension of the wire-threading channel 321. This arrangement allows for more efficient reception of light entering through the light-entry channel 325a, which helps improve the accuracy of blood oxygen detection.

[0117] In some implementations, refer to Figure 28 The optical fiber 33 may also include an optical fiber buffer (not shown in the figure), which is filled between the inner wall of the second protective tube 3322 and the outer wall of the light guide section 331c. The optical fiber buffer is used to limit the radial movement of the light guide section 331c and absorb impact force. This arrangement can further reduce the offset or stress damage to the optical fiber 33 during the movement of the ultrasonic transducer 32, and can significantly improve the service life of the optical fiber 33.

[0118] In some embodiments, the fiber optic buffer can be made of buffering material such as buffer cotton, which is filled between the outer peripheral wall of the light guide segment 331c and the inner wall of the second protective tube 3322. On the one hand, it can play a certain role in fixing the light guide segment 331c and reducing its movement in the second protective tube 3322; on the other hand, it can also play a buffering role, reducing friction between the light guide segment 331c and the second protective tube 3322 and preventing wear of the optical fiber 33.

[0119] In some implementations, refer to Figure 28 The ultrasonic transducer 32 is provided with a locking hole 322 communicating with the threading channel 321. A locking member is inserted into the locking hole 322 and pressed against the limiting sleeve 332 of the optical fiber 33. The locking member is used to restrict the movement of the optical fiber 33 along its radial direction. This can prevent the optical fiber 33 from rotating relative to the ultrasonic transducer 32, further reducing the offset of the optical fiber 33 or the degree of stress damage, and further improving the service life of the optical fiber 33. In some embodiments, the threading channel 321 extends along a first direction, and the locking hole 322 extends along a second direction; wherein, the first direction may be the length direction of the ultrasonic body, and the second direction intersects with the first direction.

[0120] In this embodiment, the locking component, combined with the aforementioned limiting sleeve 332 structure, prevents the optical fiber 33 from moving along the axial direction or rotating around the axial direction, thereby achieving complete locking of the optical fiber 33. Furthermore, since the locking component acts on the limiting sleeve 332, the optical fiber body 331 will not be directly subjected to force and thus will not be damaged, which is beneficial to further improving the service life of the optical fiber 33.

[0121] In some implementations, refer to Figures 26 to 30 The ultrasonic transducer 32 may include a vibration source 324, a first vibrator 325, a second vibrator 326, and an electrode pair 327. The electrode pair 327 is electrically connected to the vibration source 324 and is used to connect to an external circuit. The first vibrator 325 and the second vibrator 326 are respectively disposed on both sides of the vibration source 324 and fixed with bolts. The end face of the first vibrator 325 is provided with the aforementioned light inlet channel 325a, which is suitable for contacting the sample container 52 during operation. The light inlet channel 325a is connected to the light receiving end 331a of the optical fiber 33. In this way, while realizing the ultrasonic function, it also helps to further expand the light receiving range of the optical fiber 33.

[0122] Bolts are primarily used to fix the first vibrator 325, the second vibrator 326, and the vibration source 324 axially. Bolts are generally made of metal. To prevent short circuits between electrodes caused by the bolts, insulating washers are sometimes provided in some embodiments to insulate the bolts and electrodes.

[0123] During operation, the ultrasonic transducer 32 as a whole will generate axial vibration, and the high-frequency vibration of the end face of the first vibrator 325 is used to emit high-frequency sound waves toward the sample container 52.

[0124] Reference Figures 31 to 34 In some embodiments of this application, the light-emitting device 4 includes a light source mounting bracket 41 and a light-emitting component. The light-emitting component includes a light source housing 42, a light source assembly 43, and an elastic member 44. The light source housing 42 and the light source mounting bracket 41 are fixedly connected, and the light source mounting bracket 41 is adapted to be driven by an external force to move. The light source assembly 43 is movably disposed within the light source housing 42. The elastic member 44 is disposed between the light source assembly 43 and the inner wall of the light source housing 42. The elastic member 44 can be compressed and deformed to provide cushioning when the light-emitting end 435b of the light source assembly 43 contacts and is blocked by the sample container 52. When compressed, the elastic member 44 can press the light-emitting end 435b of the light source assembly 43 onto the sample container 52, so that the light source assembly 43 and the sample container 52 come into contact. The elastic member 44 can also drive the light source assembly 43 to reset after the light-emitting end 435b of the light source assembly 43 separates from the sample container 52.

[0125] In some embodiments, the light source housing 42 can be mounted on the second guide rail 212 of the mounting bracket 21 via the light source mounting bracket 41. The light source assembly 43 is driven to move by the drive motor 22, thereby achieving contact and separation between the light source assembly 43 and the sample container 52. This arrangement not only avoids friction between the light source assembly 43 and the sample container 52 during disassembly or assembly, but also ensures a fixed relative position between them during measurement. It can be understood that when the light source assembly 43 contacts the sample container 52, it is essentially unable to move due to the obstruction of the sample container 52. As the light source housing 42 continues to move, it compresses the elastic element 44, which applies a spring force to the light source assembly 43, allowing it to fully contact the sample container 52. This ensures that the relative position between the light source assembly 43 and the sample container 52 remains essentially fixed during each test, thus guaranteeing the accuracy and stability of the test results. Furthermore, due to the buffering effect of the elastic element 44, the pressure exerted by the light source assembly 43 on the sample container 52 will not be excessive, preventing the sample container 52 from being broken by impact.

[0126] In some embodiments, the light source assembly 43 can be movably connected to the light source housing 42 via a guide post or guide structure, thereby cooperating with the elastic element 44 to achieve a better buffering effect when in contact with the sample container 52 and to make the light source assembly 43 fit more tightly with the sample container.

[0127] In some embodiments, the elastic element 44 may be a spring, an elastic cushioning pad or block, or other cushioning component or structure that can provide a cushioning effect, and is not limited thereto.

[0128] It is understood that this application improves the structure of the light-emitting device 4 by movably mounting the light source assembly 43 inside the light source housing 42 and providing a buffer elastic member 44 between the light source assembly 43 and the light source housing 42, effectively preventing the light-emitting device 4 from damaging the sample container 52 during movement. Furthermore, by providing the elastic member 44, the light-emitting end 435b of the light source assembly 43 can be fully attached to the sample container 52, which is beneficial for the propagation of light and heat conduction, thereby effectively improving the accuracy of blood oxygen detection.

[0129] In some implementations, such as Figures 32 to 34 As shown, the light source housing 42 may have a receiving cavity 421a with an opening 422a. Part of the light source assembly 43 is installed in the receiving cavity 421a, and the light-emitting end 435b of the light source assembly 43 extends outside the opening 422a. In this way, the light-emitting end 435b of the light source assembly 43 can better contact the surface of the sample container 52, and the fit is more complete, which further improves the effect of light propagation and heat conduction, and improves the accuracy of blood oxygen detection.

[0130] In some embodiments, the shape and size of the opening 422a can be adapted to the shape and size of the light-emitting end 435b of the light source assembly 43 at that location. It can be circular, elliptical, square or irregular in shape, and the size of the opening 422a is smaller than the size of the portion of the light source assembly 43 located in the receiving cavity 421a. This allows the light-emitting end of the light source assembly 43 to extend while effectively limiting the radial displacement of the light source assembly 43.

[0131] To enable the light source assembly 43 to move relative to the light source housing 42 to approach or move away from the elastic member 44, and to improve assembly convenience, in some embodiments, such as Figures 32 to 37 As shown, the light source assembly 43 may include a circuit board base 431 and a light source circuit board 432 and an optical path assembly 433 disposed on the circuit board base 431. The optical path assembly 433 is located on the light emission path of the light-emitting side of the light source circuit board 432. A limiting post 4311 is provided on the side of the circuit board base 431 facing away from the light source circuit board 432. The cavity wall of the accommodating cavity 421a is provided with an insertion hole 421b that is adapted to be movably inserted into the limiting post 4311. An elastic member 44 is sleeved on the limiting post 4311. The axis of the limiting post 4311 is approximately parallel to the illumination direction of the detection light emitted by the light source assembly 43.

[0132] In some embodiments, the light source assembly 43 can move along the axial direction of the limiting post 4311, and the moving direction of the light source assembly 43 is the axial direction of the elastic member 44, so as to compress or release the elastic member 44. This can make the force on the light source assembly 43 more uniform, provide better buffering for the light source assembly 43, and make the contact between the light-emitting end 435b of the light source assembly 43 and the sample container 52 more sufficient and effective.

[0133] In some implementations, such as Figures 34 to 36 As shown, the light source housing 42 may include a light source housing base 421 and a light source housing cover plate 422. The light source housing cover plate 422 covers the light source housing base 421, and the light source housing cover plate 422 and the light source housing base 421 together form a receiving cavity 421a, with an opening 422a formed on the light source housing cover plate 422. A socket 421b is formed on the light source housing base 421. This improves the convenience of assembling the light source assembly 43 and the elastic member 44, reduces the number of parts, and helps save costs.

[0134] In some implementations, such as Figure 32 As shown, heat dissipation vents are provided on the outer peripheral wall of the light source housing 42 corresponding to the circuit board and other components of the light source assembly 43, to prevent heat from accumulating on the light source assembly 43 for a long time, so as to ensure that the light source assembly 43 can work normally for a long time.

[0135] To further improve the structural compactness of the light-emitting device 4 and to prevent the light source assembly 43 from moving radially along the elastic member 44, causing uneven force on itself, or even causing it to fall out of the installation position and deviate from the predetermined path of the emitted light, in some embodiments, the cavity wall of the receiving cavity 421a is provided with a positioning groove 421c that communicates with the insertion hole 421b. Part of the light source assembly 43 is housed in the positioning groove 421c so that the light source assembly 43 has a fixed orientation. In conjunction with the elastic member 44, the buffering effect can be further improved.

[0136] In some embodiments, the shape and size of the positioning groove 421c may be adapted to the light source assembly 43, but there should be no interference between them that would affect the movement of the light source assembly 43.

[0137] In some implementations, such as Figure 32 As shown, a positioning post 4221 can be provided on the side of the light source housing cover plate 422 facing away from the light source housing base 421. The positioning post 4221 is suitable for insertion into the positioning hole 521a of the sample container 52. In this way, the contact between the light-emitting device 4 and the sample container 52 can be more sufficient, and the accuracy of the contact position can be guaranteed, which is conducive to further improving the accuracy of blood oxygen detection.

[0138] In some embodiments, the length of the positioning post 4221 may be greater than the length by which the light-emitting end 435b of the light source assembly 43 (i.e., the end face of the end from which the light path assembly 433 emits light to the sample container) protrudes beyond the cover plate 422 of the light source housing. By setting a reasonable length for the positioning post 4221, the positioning post 4221 can be inserted into the positioning hole 521a of the sample container 52 when the light-emitting end 435b of the light source assembly 43 contacts the sample container 52, thereby ensuring that the positioning post 4221 has a limiting function. This can effectively prevent the light-emitting device 4 from excessively squeezing the sample container 52 and damaging it, and can further improve the sufficiency and accuracy of the contact between the light-emitting device 4 and the sample container 52.

[0139] In some related technologies, temperature is a significant factor affecting the measurement results when performing optical measurements on samples in sample container 52. Therefore, a heating structure is usually required to heat the blood sample and maintain its temperature. In the blood gas analyzers of related technologies, the heating component is located in the preheating position to preheat the blood sample. This requires a certain amount of space in the main unit to house the heating component. Furthermore, because the preheating position and the detection position are different, the actual blood sample temperature during detection will deviate from the expected temperature.

[0140] In this regard, the embodiments of this application also make improvements to the light source assembly 43, as follows: Reference Figures 32 to 37In some embodiments of this application, the light source assembly 43 includes a housing assembly, a light source circuit board 432, and a heating unit 45. The housing assembly is adapted to contact the sample container 52 when the light source assembly 43 is working, and its function is to conduct heat to the sample container 52. The light source circuit board 432 is disposed inside the housing assembly, and a light-emitting unit 4321 for emitting light toward the sample container 52 is disposed on the light source circuit board 432. The heating unit 45 is disposed inside the housing assembly, and the heating unit 45 is integrated with the light source circuit board 432 or electrically connected to the light source circuit board 432 through wires. The heating unit 45 is used to generate heat, and the heat generated by the heating unit 45 can be conducted to the sample container 52 through the housing assembly.

[0141] In some embodiments, the housing assembly of the light source assembly 43 may consist of two or more housing components, one for supporting the light source circuit board 432 and the other for allowing light to pass through and to contact the sample container 52 during operation; no specific limitation is made here.

[0142] In some embodiments, to minimize the overall size of the light source assembly 43 and facilitate assembly, the heating unit 45 is preferably a heating circuit integrated on the light source circuit board 432. Of course, the heating unit 45 can also be a heating device independently disposed on the light source circuit board 432 or disposed outside the light source circuit board 432. The heating device is connected to the light source circuit board 432 through wires. The heating device can be an electric heating wire, mesh, rod, plate or disc, or a combination of the above devices, and is not limited here.

[0143] It is understood that the embodiments of this application improve the structure of the light source assembly 43. By setting up the heating unit 45 to generate heat and conduct it to the sample container 52 through the housing assembly, the consistency between the temperature during blood oxygenation testing and the expected temperature is ensured, improving the testing accuracy. At the same time, it eliminates the need to reserve space in the blood gas analyzer's main unit to install the heating assembly, saving space in the main unit of the blood gas analyzer. In addition, it can also achieve simultaneous heating of the sample in the sample container during sample testing, making the sample temperature more accurate and stable during testing.

[0144] To improve the ease of installation of the light source circuit board 432 and light guide components, further reduce the size of the light source assembly 43, and enable the heat generated by the heating unit 45 to be quickly and effectively conducted to the sample container 52, in some embodiments, such as Figures 34 to 36As shown, the light source assembly 43 may further include an optical path assembly 433, and the housing assembly includes the aforementioned circuit board base 431 and top cover 435. The top cover 435 is disposed on the circuit board base 431, and the top cover 435 and the circuit board base 431 enclose an installation space for mounting the light source circuit board 432 and the optical path assembly 433. The top cover 435 is in direct or indirect contact with the circuit board base 431. The top cover 435 passes through the opening 422a, and a portion of the top cover 435 is located outside the opening 422a. The light-emitting end of the light source assembly 43 is the side of the top cover 435 facing away from the circuit board base 431.

[0145] In some embodiments, the housing assembly further includes a spacer 434, which is disposed within the mounting space and separates the light source circuit board 432 and the optical path assembly 433. The spacer 434 also serves to prevent heat conduction to the optical path assembly 433, thus avoiding thermal deformation of the optical path assembly 433 during operation and ensuring the accuracy of light detection.

[0146] In some embodiments, the circuit board base 431 and the top cover 435 constitute the housing of the light source assembly 43. Openings can be provided on both sides of the housing, which are connected to the heat dissipation vents mentioned above. This can play a certain role in heat dissipation, which helps to reduce the temperature of the light source circuit board 432 during operation and ensure that the light source circuit board 432 can continue to work normally. At the same time, this open design also reduces the amount of material used, making the overall weight of the light source assembly 43 lighter and the cost lower.

[0147] In some embodiments, the light source circuit board 432 is abutted against one side surface of the circuit board base 431, and the other side surface of the circuit board base 431 can be fixed to the light source housing base 421 of the light-emitting device 4. A limiting post 4311 can be provided on this side of the circuit board base 431, and the limiting post 4311 is fitted with an elastic element 44 such as a spring. The two ends of the elastic element 44 abut against the circuit board base 431 and the light source housing base 421, respectively. This ensures that the elastic force of the elastic element 44 always faces the light source assembly 43. Simultaneously, the limiting post 4311 can further maintain the orientation of the light source assembly 43, ensuring that the light emitted by the light source assembly 43 also has a fixed orientation, which helps to further improve the accuracy of blood oxygen detection.

[0148] In some embodiments, to further improve the efficiency and effect of heat conduction, the circuit board base 431 may be made of a material with excellent thermal conductivity, such as metal, and the top cover 435 may be made of a material with excellent thermal conductivity, such as metal, and there are no limitations here.

[0149] To improve the uniformity of heat transfer in the light source assembly 43 and make the sample container 52 more evenly heated, in some embodiments, the following is mainly referred to Figure 34The light source assembly 43 may further include a heat-spreading substrate 46, which is disposed on the side surface of the light source circuit board 432 opposite to the light-emitting unit 4321 and is in direct contact with the light source circuit board 432. The heat-spreading substrate 46 is located between the circuit board base 431 and the light source circuit board 432 and is used to uniformly diffuse heat to the circuit board base 431. The light source circuit board 432 includes the heat-spreading substrate 46, an insulating layer, and a light-emitting circuit. The light-emitting circuit is used to supply power to the light-emitting unit. The heating unit 45 is a heating circuit integrated on the light source circuit board 432. The insulating layer is disposed on the heat-spreading substrate 46, and the heating unit 45 and the light-emitting circuit are disposed on the side of the insulating layer opposite to the heat-spreading substrate 46. The heat-spreading substrate 46 is used to conduct heat to the circuit board base 431.

[0150] In some embodiments, the heat spreader substrate 46 may be made of metal or other materials with excellent thermal conductivity. For example, the heat spreader substrate may be a copper plate. Furthermore, the thickness of the heat spreader substrate is 0.5 mm to 2.5 mm to have a high heat capacity and ensure uniform heat diffusion.

[0151] In some embodiments, a thermally conductive layer (not shown) may be provided between the heat-spreading substrate 46 and the circuit board base 431. The thermally conductive layer is used to accelerate the heat conduction speed between the heat-spreading substrate 46 and the circuit board base 431. The thermally conductive layer may be a flexible thermally conductive material such as thermal grease.

[0152] In some embodiments, the spacer 434 may be provided with a light channel for allowing light emitted from the light source circuit board 432 to pass through the optical path assembly 433. The top cover 435 is adapted to rest against the target object when the light source assembly 43 is operating, and the top cover 435 is provided with a light exit hole 435a for allowing light emitted from the optical path assembly 433 to pass through to the sample container 52. In this way, heat can be transferred to the sample container 52 while ensuring that the detection light emitted by the light-emitting unit 4321 can reach the sample container 52, which helps to improve the accuracy of blood oxygen detection. In addition, this arrangement also helps to improve the structural compactness of the light source assembly 43.

[0153] In some embodiments, the top cover 435 includes a cover body 4351 and a lampshade 4352 protruding from the cover body 4351. The side of the cover body 4351 is abutted against the side of the circuit board base 431, and the lampshade 4352 covers the side of the optical path assembly 433 facing away from the circuit board base 431. A light-emitting hole 435a is provided on the lampshade 4352, and the outer end face of the lampshade 4352 is a heat-conducting surface suitable for contact with the sample container 52. This arrangement allows for better adaptation to the sample container 52, thereby further improving the uniformity and efficiency of heat transfer.

[0154] In some implementations, the heat-conducting surface should be adapted to the surface shape of the contact area with the sample container, which can be a flat surface, a curved surface, or an irregular surface, etc., and is not limited here.

[0155] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this application.

Claims

1. A blood gas analyzer, characterized in that, The blood gas analyzer includes a main unit bracket, a blood gas measurement module, a blood oxygen measurement module, and a reagent kit assembly. The reagent kit assembly includes a reagent kit and a sample container. The blood gas measurement module is configured to detect the input sample to obtain a blood gas signal, and the blood oxygen measurement module is configured to detect the sample input into the sample container to obtain a blood oxygen signal. The main unit support has a reagent kit chamber inside for housing the reagent kit components, and the reagent kit components are detachably disposed in the reagent kit chamber; the outer wall of the reagent kit has a groove, and the sample container is connected to the reagent kit and located in the groove; The blood oxygen measurement module includes a movable ultrasonic device and a light-emitting device. The ultrasonic device is used to emit ultrasonic waves to the sample container, and the light-emitting device is used to emit detection light to the sample container. During movement, the ultrasonic device and the light-emitting device have a separated state completely outside the groove and a test state partially inserted into the groove.

2. The blood gas analyzer according to claim 1, characterized in that, The reagent kit includes an adjacent top cover and a side plate. The bottom wall of the groove is connected between the top cover and one of the side plates. The top cover has a notch, which forms a first opening of the groove. The side plate has a notch, which forms a second opening of the groove. The sample container as a whole does not extend beyond the surfaces defined by the first and second openings.

3. The blood gas analyzer according to claim 1, characterized in that, The reagent kit has a reagent pack chamber for placing the reagent pack inside. The groove wall is located between the groove and the reagent pack chamber. One end of the sample container is connected to one side wall of the groove, and the other end of the sample container is connected to the other side wall of the groove.

4. The blood gas analyzer according to claim 2, characterized in that, The sample container includes a sample container body, the interior of which has a sample chamber for containing the sample. Liquid guide tubes communicating with the sample chamber are provided at both ends of the sample container body and extend into the interior of the reagent kit. The blood oxygen testing channel includes the sample chamber and a pair of liquid guide tubes. The reagent kit is equipped with a delivery pump and a connecting pipe, which communicates with the blood oxygen testing channel. When the reagent kit assembly is inserted into the reagent kit chamber, the delivery pump can drive liquid through the blood oxygen testing channel.

5. The blood gas analyzer according to claim 4, characterized in that, The host bracket is also provided with a test card mounting position for installing the test card assembly. The test card assembly can be installed into or removed from the test card mounting position. The reagent kit assembly has a test card mounting cavity on its exterior. When the test card assembly and the reagent kit assembly are installed in the host bracket, the test card assembly is installed in the test card mounting cavity outside the reagent kit assembly. The blood gas testing channel inside the test card assembly is connected to the connecting pipeline. The delivery pump can drive liquid to enter the blood gas testing channel and the blood oxygen testing channel in sequence, or the delivery pump can drive liquid to enter the blood gas testing channel and the blood oxygen testing channel respectively.

6. The blood gas analyzer according to claim 4, characterized in that, Flexible sleeves are connected to both ends of the main body of the sample container. The groove sidewall is provided with an installation hole. The flexible sleeve is fixed in the installation hole, and the liquid guide tube passes through the inner hole of the flexible sleeve.

7. The blood gas analyzer according to claim 6, characterized in that, The inner diameter of the flexible sleeve is larger than the outer diameter of the liquid guiding tube.

8. The blood gas analyzer according to claim 4, characterized in that, The sample container body includes two generally parallel light-transmitting plates through which detection light passes. The sample chamber is formed between the two light-transmitting plates. The normal of the surface of the light-transmitting plate is inclined relative to the top cover and side plate of the reagent kit. The first slot and the second slot are located on opposite sides of the light-transmitting plates, respectively.

9. The blood gas analyzer according to claim 8, characterized in that, The angle between the normal of the light-transmitting plate and the top cover of the reagent kit is 30°-60°, and the angle between the normal of the light-transmitting plate and the side plate of the reagent kit is 30°-60°.

10. The blood gas analyzer according to any one of claims 1 to 9, characterized in that, The reagent kit chamber includes a sample container testing chamber, and the main unit bracket is provided with a sample container testing chamber opening. When the reagent kit assembly is installed in the reagent kit chamber, the sample container testing chamber opening is configured to expose the recess of the reagent kit. When the blood oxygen measurement module is in the separated state, the ultrasound device and the light-emitting device are located outside the main support frame; when the blood oxygen measurement module is in the test state, part or all of the ultrasound device and part or all of the light-emitting device are located inside the sample container test chamber of the main support frame, and the ultrasound device and the light-emitting device are in contact with the sample container.

11. The blood gas analyzer according to claim 10, characterized in that, The host support includes an adjacent host support top plate and a host support side plate. The sample container test chamber opening includes a top surface opening on the host support top plate and a side surface opening on the host support side plate. The first groove of the groove is aligned with and communicates with the top surface opening, and the second groove of the groove is aligned with and communicates with the side surface opening.

12. The blood gas analyzer according to any one of claims 1 to 9, characterized in that, The blood oxygen measurement module also includes a mounting bracket connected to the outside of the main unit bracket. The mounting bracket is equipped with a drive source, which is used to drive the ultrasound device and the light-emitting device to move in opposite directions. The sample container has a first side and a second side arranged opposite to each other. The ultrasound device faces the first side of the sample container, and the light-emitting device faces the second side of the sample container. When the blood oxygen measurement module is in the test state, the ultrasound device is in contact with the first side of the sample container, and the light-emitting device is in contact with the second side of the sample container.

13. The blood gas analyzer according to claim 1, characterized in that, The sample container has a first side and a second side arranged opposite to each other. The ultrasound device faces the first side of the sample container, and the light-emitting device faces the second side of the sample container. The blood oxygen measurement module includes a drive actuator, which is configured to drive the ultrasound device and the light-emitting device to move in opposite directions. Under the drive of the drive actuator, the ultrasound device and the light-emitting device can synchronously approach and approximately simultaneously contact the sample container or synchronously move away from the sample container in a straight line. The drive actuator includes a mounting bracket, a drive motor, a main transmission assembly, and a synchronous transmission assembly; the mounting bracket is fixedly connected to the main support bracket, and the drive motor is mounted on one end of the mounting bracket; The mounting bracket has a semi-open cavity structure. The inner wall of the mounting bracket is provided with multiple first guide rails and multiple second guide rails. The guiding directions of the first guide rails and the second guide rails are parallel or approximately parallel. The ultrasonic device, the light-emitting device, and the synchronous transmission assembly are located within the cavity structure of the mounting bracket. The ultrasonic device is slidably connected to multiple first guide rails, and the light-emitting device is slidably connected to multiple second guide rails. The main transmission assembly is driven between the drive motor and the ultrasonic device, and the synchronous transmission assembly is driven between the ultrasonic device and the light-emitting device. The drive motor drives the ultrasonic device to slide linearly along multiple first guide rails on the mounting bracket through the main transmission assembly, and the ultrasonic device drives the light-emitting device to slide linearly along multiple second guide rails through the synchronous transmission assembly, with the sliding directions of the ultrasonic device and the light-emitting device being opposite. The main transmission assembly includes a slider, a rigid force transmission component, and a first fixing pin. The slider can be driven by the drive motor to make linear motion. The first fixing pin is fixedly connected to the mounting bracket. The rigid force transmission component is rotatably arranged around the axis of the first fixing pin. The ultrasonic device includes an ultrasonic mounting bracket slidably connected to the mounting bracket and an ultrasonic transducer fixed on the ultrasonic mounting bracket, the ultrasonic transducer being used to emit ultrasonic waves to the sample container. The slider is provided with a first guide groove, the ultrasonic mounting bracket is provided with a second guide groove, and the rigid force transmission component is provided with a first transmission pin and a second transmission pin. The second transmission pin is located between the first transmission pin and the first fixed pin. The first transmission pin extends into the first guide groove and slides in cooperation with the first guide groove, and the second transmission pin extends into the second guide groove and slides in cooperation with the second guide groove. The synchronous transmission assembly includes a transmission rod and a second fixing pin, the second fixing pin being connected to the mounting bracket, and the transmission rod being rotatable about the axis of the second fixing pin; The light-emitting device includes a light source mounting bracket slidably connected to the mounting bracket and a light-emitting component fixed on the light source mounting bracket. The light-emitting component is used to emit detection light to the sample container. The ultrasonic mounting bracket is provided with a third guide groove, the light source mounting bracket is provided with a fourth guide groove, the transmission rod is connected with a third transmission pin and a fourth transmission pin, and the second fixing pin is located between the third transmission pin and the fourth transmission pin; the third transmission pin extends into the third guide groove and slides with the third guide groove, and the fourth transmission pin extends into the fourth guide groove and slides with the fourth guide groove; The first guide groove, the second guide groove, the third guide groove, and the fourth guide groove are strip-shaped grooves. The length direction of the first guide groove is set at an angle to the sliding direction of the slider. The length directions of the second guide groove, the third guide groove, and the fourth guide groove are approximately parallel to the length direction of the first guide groove. The guiding direction of the first guide rail, the vibration direction of the ultrasonic device, and the detection light emission direction of the light-emitting device are parallel or approximately parallel. The ultrasound device is equipped with an optical fiber. The detection light emitted by the light-emitting device passes through the sample container and illuminates the optical fiber. After receiving the detection light, the optical fiber guides the detection light into the spectrometer connected to the optical fiber. The host support is provided with a sample container test chamber opening, which is configured to expose the sample container. When the blood oxygen measurement module is in the separated state, the entire ultrasound device and the entire light-emitting device are located outside the main support frame; when the blood oxygen measurement module is in the test state, part or all of the ultrasound device and part or all of the light-emitting device are located inside the main support frame. The host support includes two adjacent host support top plates and host support side plates arranged at an angle. The sample container test chamber opening includes a top surface opening on the host support top plate and a side surface opening on the host support side plate. The first groove of the groove is aligned with and communicates with the top surface opening, and the second groove of the groove is aligned with and communicates with the side surface opening. The ultrasonic device extends into or out of the groove from the top surface opening, and the light-emitting device extends into or out of the groove from the side surface opening. The mounting bracket includes a first side and a second side arranged adjacent to each other at an angle. The first side is aligned with the top plate of the main unit bracket, and the second side is aligned with the side plate of the main unit bracket. The first side has a first side bracket opening that is aligned with and communicates with the top opening, and the second side has a second side bracket opening that is aligned with and communicates with the side opening. During movement, the ultrasonic device can extend into or out of the groove through the first side bracket opening and the top opening. During movement, the light-emitting device can extend into or out of the groove through the second side bracket opening and the side opening. The host bracket is also provided with a test card mounting position for installing the test card assembly. The reagent kit assembly has a delivery pump and a connecting pipe inside, and the connecting pipe is connected to the blood oxygen testing channel inside the sample container. When the test card assembly and the reagent kit assembly are installed in the host bracket, the blood gas testing channel inside the test card assembly is connected to the connecting pipe. The delivery pump can drive liquid to enter the blood gas testing channel and the blood oxygen testing channel in sequence, or the delivery pump can drive liquid to enter the blood gas testing channel and the blood oxygen testing channel respectively.

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