Kit for blood gas analyzer and blood gas analyzer

Abstract

A kit (200) for a blood gas analyzer (1) and the blood gas analyzer (1). The kit (200) comprises a kit body (210), a gas valve assembly (220), and a switch assembly (230). The kit body (210) is provided with an accommodating chamber (211), and a liquid bag is arranged in the accommodating chamber (211); the gas valve assembly (220) is arranged in the kit body (210) and is provided with a first channel opening (221) and a second channel opening (222), the first channel opening (221) is used for gas intake, the second channel opening (222) is used for being communicated with a sample test card of the blood gas analyzer (1), and a gas channel (223) is formed between the first channel opening (221) and the second channel opening (222); and the switch assembly (230) comprises a movable member (231) and a stressed member (232), the movable member (231) is in linkage fit with the stressed member (232), the stressed member (232) is configured to move upon receiving an external force, and the movable member (231) is linked under the action of the stressed member (232) and controls the gas channel (223) to be either closed or communicated, thereby optimizing the gas valve-related structure of the blood gas analyzer (1).

Description

Reagent kits for blood gas analyzers and blood gas analyzers [Technical Field]

[0001] This application relates to the field of medical device technology, and in particular to reagent kits for blood gas analyzers and blood gas analyzers. [Background Technology]

[0002] A blood gas analyzer is an instrument that can measure relevant indicators such as pH, partial pressure of carbon dioxide (PCO2), and partial pressure of oxygen (PO2) in blood and other liquids in a short period of time using electrodes.

[0003] Current blood gas analyzers typically require air extraction during operation to clean the internal tubing connected to the liquid bag. Air intake is controlled by a valve assembly and an actuator inserted within the valve assembly. However, the actuator's design is complex due to its deep insertion into the valve assembly, and the valve assembly's structure is not entirely efficient.

[0004] [Summary of the Invention]

[0005] Embodiments of this application provide a blood gas analyzer and its reagent kit that optimizes the valve-related structure of the blood gas analyzer.

[0006] To address the aforementioned problems, this application provides a reagent kit for a blood gas analyzer. The kit includes a box body, a valve assembly, and a switch assembly. The box body has a receiving cavity containing a liquid bag. The valve assembly is located within the box body and has a first channel and a second channel. The first channel is for air intake, and the second channel is for connection to a sample test card of the blood gas analyzer, forming a gas channel between the first and second channels. The switch assembly includes a moving part and a force-receiving part, which are linked and cooperate. The force-receiving part is used to receive external force and move accordingly. The moving part is linked under the action of the force-receiving part, controlling the closure or opening of the gas channel.

[0007] To address the aforementioned problems, this application provides a blood gas analyzer, comprising a device body and a reagent kit, the reagent kit being connected to the device body of the blood gas analyzer. The reagent kit includes a cartridge body, a valve assembly, and a switch assembly. The cartridge body has a receiving cavity containing a liquid bag; the valve assembly is located on the cartridge body and has a first channel port and a second channel port. The first channel port is used for air intake, and the second channel port is used to connect to the sample test card of the blood gas analyzer, forming a gas channel between the first and second channel ports; the switch assembly includes a moving part and a force-receiving part, which are linked and cooperate; the force-receiving part is used to receive external force and move, and the moving part is linked under the action of the force-receiving part, controlling the closure or opening of the fluid channel.

[0008] The beneficial effects of this application are as follows: Unlike the prior art, this application designs a moving part and a force-bearing part that are linked and cooperate in the air valve assembly. Therefore, the external actuator that provides driving force can control the opening or closing of the gas passage in the air valve assembly through the force-bearing part. This simplifies the structure and design difficulty of the actuator, while optimizing the internal structure of the air valve assembly and better controlling whether gas enters the pipeline. [Attached Image Description]

[0009] Figure 1 is a structural schematic block diagram of an embodiment of the blood gas analyzer of this application;

[0010] Figure 2 is an exploded structural diagram of the blood gas analyzer embodiment shown in Figure 1;

[0011] Figure 3 is a schematic diagram of a reagent kit in an embodiment of the blood gas analyzer shown in Figure 2;

[0012] Figure 4 is an exploded structural diagram of the kit example shown in Figure 3;

[0013] Figure 5 is a structural schematic diagram of the valve assembly and switch assembly in the kit embodiment shown in Figure 3;

[0014] Figure 6 is a structural schematic diagram of the embodiment of the valve assembly and switch assembly shown in Figure 4 along section line AA;

[0015] Figure 7 is an exploded structural diagram of some components of the blood gas analyzer embodiment of this application;

[0016] Figure 8 is another structural schematic diagram of the embodiment of the valve assembly and switch assembly shown in Figure 4 along section line AA;

[0017] Figure 9 is an enlarged schematic diagram of a partial area B of the valve assembly and switch assembly shown in Figure 8;

[0018] Figure 10 is an exploded structural diagram of the valve assembly and switch assembly in the kit embodiment shown in Figure 3;

[0019] Figure 11 is another exploded view of the valve assembly and switch assembly in the kit example shown in Figure 3.

Detailed Implementation Methods

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0021] The inventors of this application have discovered that current blood gas analyzers typically require air extraction during use to clean the internal tubing connected to the liquid bag. Air intake is controlled by a valve assembly and an actuator inserted within the valve assembly. However, the actuator's design is complex due to its deep insertion into the valve assembly, and the valve assembly's structure is not ideal. To address these issues, this application proposes the following embodiments.

[0022] The following is an exemplary description of the blood gas analyzer in the embodiments of this application.

[0023] A blood gas analyzer is an instrument that can measure the pH, partial pressure of carbon dioxide (PCO2), and partial pressure of oxygen (PO2) of blood and other liquids in a short time using electrodes. It can also reflect the content of oxygen, carbon dioxide and other gases in the blood, as well as changes in blood pH and related indicators.

[0024] As shown in Figures 1 and 2, the blood gas analyzer 1 may include a device body 100 and a reagent kit 200. The reagent kit 200 is connected to the device body of the blood gas analyzer 1. Specifically, the reagent kit 200 is used to hold a liquid bag containing the liquid to be tested. The device body 100 can be connected to the reagent kit 200 to extract the liquid from the liquid bag in the reagent kit 200 for testing.

[0025] In some embodiments, as shown in Figures 3 to 6, the kit 200 may include a kit body 210, a valve assembly 220, and a switch assembly 230. Optionally, both the valve assembly 220 and the switch assembly 230 may be mounted on the kit body 210.

[0026] The box body 210 is provided with a receiving cavity 211, and a liquid-containing bag is provided inside the receiving cavity 211.

[0027] The gas valve assembly 220 is disposed on the housing body 210 and may have a first channel port 221 and a second channel port 222. The first channel port 221 is used for air intake, and the second channel port 222 is used to connect to the sample test card of the blood gas analyzer 1. A gas channel 223 is formed between the first channel port 221 and the second channel port 222. The gas valve assembly 220 is used to allow air to enter the gas channel 223 to further enter the sample test card or pipeline for cleaning the sample test card. Alternatively, the gas valve assembly 220 can close the gas channel 223 to prevent air from entering the sample test card or pipeline.

[0028] Among them, the sample test card is a test card that can measure relevant indicators such as pH, partial pressure of carbon dioxide (PCO2), and partial pressure of oxygen (PO2) of liquids such as blood.

[0029] Specifically, the switch assembly 230 can be used to close or open the gas valve assembly 220. The switch assembly 230 may include a movable member 231 and a force-receiving member 232, which are linked together. The force-receiving member 232 can be used to receive external force and move, while the movable member 231 is linked under the action of the force-receiving member 232, thus controlling the closure or opening of the gas passage 223.

[0030] Specifically, the linkage between the movable part 231 and the force-receiving part 232 means that when the force-receiving part 232 moves, it triggers the movable part 231 to move, so that the position of the movable part 231 changes.

[0031] By placing the valve assembly 220 on the body 210 of the reagent kit 200 instead of on the blood gas analyzer 1, the structure of the blood gas analyzer 1 can be simplified, internal space can be saved, and disassembly and maintenance of the reagent kit 200 and the valve assembly 220 can be facilitated. Furthermore, by incorporating a switch assembly 230 in the reagent kit 200 to open or close the gas passage 223 in the valve assembly 220, the force-bearing component 232 in the switch assembly 230, under external force, drives the movable component 231 to close or open the gas passage 223, thereby opening or closing the valve assembly 220. Therefore, the external actuator (not shown) providing the driving force can control the opening or closing of the gas passage 223 in the valve assembly 220 through the force-bearing component 232, simplifying the structure and design of the actuator, optimizing the internal structure of the valve assembly 220, and better controlling whether gas enters the pipeline.

[0032] Optionally, the movable part 231 is configured to close the gas channel 223 when no external force is applied. That is, when the switching assembly 230 is not subjected to external force, the movable part 231 can close the gas channel 223. Therefore, the gas channel 223 of the blood gas analyzer 1 remains closed when no external force is applied, and can only be opened when an external force is applied. This configuration further ensures the state of the gas channel 223, keeping it closed when no one is operating it, thus reducing the possibility of the gas channel 223 being accidentally opened during handling or movement of the blood gas analyzer 1.

[0033] Optionally, the blood gas analyzer 1 may further include an actuator for providing external force to the force-receiving member 232, which in turn drives the movable member 231 based on the external force to close or open the gas passage 223. Optionally, the actuator may extend to the surface of the blood gas analyzer 1, allowing the user to apply external force to the force-receiving member 232 via the actuator, thereby driving the movable member 231 to close or open the gas passage 223. Therefore, the actuator configuration facilitates better user control of the switch assembly 230 and the valve assembly 220.

[0034] In some embodiments, the switch assembly 230 may further include a magnetic element (not shown), which may be disposed on a portion of the force-receiving element 232. Alternatively, a portion of the force-receiving element 232 may be a magnetic element (not shown), connected to another portion of the force-receiving element 232. The magnetic element is used to couple with the actuator of the blood gas analyzer 1 to move the movable element 231. Using a magnetic element to connect and couple the switch assembly 230 and the actuator facilitates installation and connection, as well as disassembly and maintenance of both components.

[0035] In some embodiments, as shown in FIG7, the blood gas analyzer 1 may further include a channel assembly 240, which may be disposed on the housing body 210. The channel assembly 240 is used to dock with the liquid bag, the second channel port 222, and the sample test card of the blood gas analyzer 1, respectively, to guide the liquid in the liquid bag to the sample test card of the blood gas analyzer 1. Optionally, the liquid bag may include a cleaning liquid bag or a reagent liquid bag. The cleaning liquid bag may contain cleaning fluid, and the reagent liquid bag may contain reagent liquids such as blood or calibration solution. Of course, in other embodiments, the liquid bag may also be a liquid bag containing liquids such as water.

[0036] Specifically, the channel assembly 240 may include a fluid channel 241. The fluid channel 241 may include a liquid channel 2411 communicating with the interior of the liquid bag, which guides the liquid in the liquid bag to the sample test card of the blood gas analyzer 1. The fluid channel 241 may also have a channel communicating with a gas channel 223, through which air in the gas channel 223 is guided to the sample test card of the blood gas analyzer 1.

[0037] By placing the channel component 240 on the reagent kit 200, the channel component 240 can avoid occupying space in the main body 100 of the blood gas analyzer 1, and the reagent kit 200 can be easily removed from the main body 100 for subsequent maintenance of the blood gas analyzer 1.

[0038] Optionally, the device body 100 may not have a fluid channel 241. Specifically, the reagent kit 200 and the sample test card can be mounted on the device body 100, and the fluid channel 241 in the channel assembly 240 on the reagent kit 200 is directly connected to the sample test card without passing through the device body 100. This configuration simplifies the internal structure of the device body 100, saves internal space, and further simplifies the structure of the blood gas analyzer 1. It also facilitates the installation and removal of the reagent kit 200 and the sample test card.

[0039] In some embodiments, as shown in Figures 4 and 7, the kit 200 may include a vent valve 250 and a plurality of liquid inlet valves 260. The liquid inlet valves 260 are respectively connected to the liquid bag and the channel assembly 240, and the vent valve 250 is connected to the channel assembly 240. The vent valve 250 and the plurality of liquid inlet valves 260 are respectively disposed on the kit body 210, and the vent valve 250 includes a valve assembly 220 and a switch assembly 230.

[0040] Optionally, multiple liquid valves 260 may be connected to the liquid passage 2411 of the fluid passage 241 in the passage assembly 240, and the vent valve 250 forms a gas passage 223 inside, and the vent valve 250 is connected to the passage in the fluid passage 241 for air to pass through.

[0041] The liquid valve 260 is provided with a liquid passage 2411 that can selectively connect or close, so as to selectively connect or close at least with the fluid passage 241 in the passage assembly 240.

[0042] By setting a vent valve 250 and multiple liquid valves 260 on the reagent kit 200 to control the flow of liquid and air, the blood gas analyzer 1 can be precisely controlled, thereby improving the accuracy of the blood gas analyzer 1.

[0043] In some embodiments, as shown in FIG6, the kit 200 further includes a masking member 270 disposed on the kit body 210. The masking member 270 forms a masking space 271. A force-bearing member 232 is disposed within the masking space 271, or the force-bearing member 232 and the movable member 231 are disposed within the masking space 271.

[0044] Optionally, in this embodiment, both the force-receiving component 232 and the movable component 231 can be disposed within the shielding space 271, and the movable component 231 and the force-receiving component 232 can cooperate in conjunction within the shielding space 271. Therefore, the shielding component 270 can shield the force-receiving component 232 and further shield the cooperation between the movable component 231 and the force-receiving component 232, thereby ensuring that the force-receiving component 232 is not easily interfered with by other factors, thereby further reducing the phenomenon of accidental activation and improving the accuracy of the linkage between the movable component 231 and the force-receiving component 232.

[0045] Of course, in other embodiments, the force-bearing member 232 can also be disposed inside the concealing space 271 while the movable member 231 can be disposed outside the concealing space 271, and the force-bearing member 232 and the movable member 231 can work together outside the concealing space 271.

[0046] In some embodiments, as shown in FIG8, the gas channel 223 may include at least a first gas sub-channel 2231 and a second gas sub-channel 2232. The first end of the first gas sub-channel 2231 is connected to the second channel opening 222, the second end of the first gas sub-channel 2231 is connected to the first end of the second gas sub-channel 2232, and the second end of the second gas sub-channel 2232 is connected to the first channel opening 221.

[0047] Optionally, as shown in Figures 6 and 8, the valve assembly 220 may include a docking body 228, a valve body 224, and a sealing part 225.

[0048] Specifically, the docking body 228 can form an accommodating space 2241 with an opening. The shielding member 270 can include the docking body 228, and the force-bearing member 232 and the movable member 231 are both disposed within the accommodating space 2241.

[0049] Optionally, as shown in Figure 6, the valve assembly 220 further includes an end cap 226, which covers the opening of the accommodating space 2241. The end cap 226 is spaced apart from the force-bearing member 232, and a portion of the force-bearing member 232 is located between the end cap 226 and the valve body 224. In other words, the end cap 226 and the docking body 228 can be combined to form a shielding space 271. The force-bearing member 232, the movable member 231, and the valve body 224 are all located within the shielding space 271 and are thus shielded and protected by the end cap 226 and the docking body 228. This reduces the amount of dust and impurities falling into the shielding space 271 and also reduces the risk of accidental contact with the force-bearing member 232, which could lead to accidental triggering of the linkage with the movable member 231 and accidental opening of the gas passage 223.

[0050] Furthermore, the valve body 224 can be disposed within the accommodating space 2241 to form the first gas sub-channel 2231. The sealing part 225 can be disposed between the valve body 224 and the docking body 228.

[0051] A second gas sub-channel 2232 is formed between the sealing part 225 and the valve body 224. The movable member 231 is used to deform the sealing part 225, thereby deforming the second gas sub-channel 2232. Alternatively, the movable member 231 is used to move at least a portion of the sealing part 225 relative to the valve body 224, thereby closing or opening the gas channel 223. The sealing part 225 may be a deformable soft rubber tube, flexible rubber cap, etc.

[0052] Specifically, the sealing part 225 can block the second end of the first gas sub-channel 2231 under the action of the movable member 231, so that the first end of the second gas sub-channel 2232 cannot communicate with the second end of the first gas sub-channel 2231, and the gas channel 223 is in a closed state. At least a portion of the sealing part 225 can also move relative to the valve body 224 under the action of the movable member 231, thereby enabling the first end of the second gas sub-channel 2232 to communicate with the second end of the first gas sub-channel 2231, and the gas channel 223 is in a connected state.

[0053] By placing both the valve body 224 and the sealing part 225 within the accommodating space 2241 of the docking body 228, the integration of the valve assembly 220 can be improved, making its structure more compact and stable, and reducing the space occupied by the valve assembly 220. Furthermore, by utilizing the cooperation of the docking body 228, the valve body 224, and the sealing part 225 to form a gas channel 223, and by linking the sealing part 225 with the moving part 231, the reagent kit 200 can achieve the closing or opening of the gas channel 223 with a simple structure, thereby simplifying the structure of the reagent kit 200.

[0054] In some embodiments, as shown in FIG6, the movable member 231 and the sealing part 225 may be disposed on the side of the valve body 224 away from the open end of the docking body 228, and a part of the force-receiving member 232 may be disposed on the side of the valve body 224 near the open end of the docking body 228, with the other part of the force-receiving member 232 engaging with the movable member 231. Optionally, pressure may be applied to a part of the force-receiving member 232 disposed on the side of the valve body 224 near the open end of the docking body 228, thereby causing the other part of the force-receiving member 232 engaging with the movable member 231 to move, thereby driving the movable member 231 and the sealing part 225 to move, thereby closing or opening the gas passage 223.

[0055] As shown in Figures 6 and 8, when the sealing part 225 blocks the second end of the first gas sub-channel 2231, the positional relationship between the sealing part 225 and the docking body is shown in Figure 6. When the sealing part 225 opens the second end of the first gas sub-channel 2231, the positional relationship between the sealing part 225 and the docking body is shown in Figure 8.

[0056] Therefore, by placing the part of the force-bearing component 232 that receives external force and the part that is linked and cooperates with the movable component 231 on both sides of the valve body 224, it is possible not only for the force-bearing component 232 to easily drive the movable component 231, but also for the force-bearing component 232 to be less likely to be affected by the force received by other parts and drive the movable component 231 to move, thereby further reducing the phenomenon of the force-bearing component 232 being accidentally touched and causing the gas channel 223 to be connected.

[0057] In some embodiments, as shown in Figures 9 and 10, the valve body 224 may be provided with a first recess 227 spaced apart from the second channel opening 222, the first end of the first gas sub-channel 2231 is connected to the second channel opening 222, and the second end of the first gas sub-channel 2231 is disposed in the first recess 227.

[0058] Further, as shown in Figures 9 to 11, the sealing portion 225 may include a plugging member 2251, which may include a central body portion 2252 and a connecting portion 2253. The central body portion 2252 is connected to the movable member 231 and movably engages with the first recessed portion 227 to enclose and form the second gas sub-channel 2232. The connecting portion 2253 may surround the outer edge of the central body portion 2252 and connect to it, and the connecting portion 2253 is connected to the peripheral area of ​​the first recessed portion 227. Optionally, the plugging member 2251 may be an elastic colloid, capable of possessing a certain degree of elasticity.

[0059] The central body 2252 is configured to be movable relative to the valve body 224, so that at least part of the central body 2252 blocks or opens the second end of the first gas sub-channel 2231.

[0060] Specifically, under the drive of the force-bearing component 232, the movable component 231 drives the central main body 2252 to move away from or closer to the first recess 227, so that the central main body 2252 and the first recess 227 move and cooperate, thereby causing the second gas sub-channel 2232 to deform and block or open the second end of the first gas sub-channel 2231.

[0061] By using the sealing element 2251 to seal or open the second end of the first gas sub-channel 2231, the reagent kit 200 can achieve the opening and connection of the gas channel 223 with simple component matching, thereby simplifying the internal structure of the reagent kit 200 and making the connection within the reagent kit 200 tighter.

[0062] Optionally, as shown in Figures 9 to 11, the bottom of the first recessed portion 227 can be recessed to form a first groove 2271, and the second end of the first gas sub-channel 2231 is disposed in the first groove 2271. The sealing member 2251 may include a convex top structure 2254 protruding relative to the central main body portion 2252. The convex top structure 2254 is movably engaged with the first groove 2271, and the convex top structure 2254 is connected to the movable member 231 for moving relative to the valve body 224 under the drive of the movable member 231 to block or open the second end of the first gas sub-channel 2231.

[0063] Optionally, as shown in Figure 9, the second end of the first gas sub-channel 2231 is disposed on the bottom wall of the first groove 2271. Specifically, when the sealing member 2251 seals the second end of the first gas sub-channel 2231, the convex top structure 2254 is fitted into the first groove 2271 and seals the second end of the first gas sub-channel 2231. The central body portion 2252 can abut against the edge of the first groove 2271 away from the first gas sub-channel 2231, so as to further seal the first groove 2271 together with the convex top structure 2254, thereby further sealing the second end of the first gas sub-channel 2231. The sealing element 2251 is configured in this way to further ensure the sealing effect of the sealing element 2251 on the second end of the first gas sub-channel 2231, thereby achieving a double sealing of the second end of the first gas sub-channel 2231. This reduces the phenomenon of air leakage at the second end of the first gas sub-channel 2231 when the gas channel 223 is in a closed state, thereby enhancing the structural tightness of the valve assembly 220.

[0064] Optionally, as shown in Figure 10, the connecting part 2253 may be provided with multiple locking holes 2255, and the valve body 224 may be provided with multiple locking buckles 2258. The locking buckles 2258 cooperate with the locking holes 2255 to connect the connecting part 2253 to the valve body 224.

[0065] Specifically, the connecting portion 2253 of the sealing member 2251 is connected to the valve body 224, and the central main body portion 2252 of the sealing member 2251 is connected to the movable member 231. When the movable member 231 moves the central main body portion 2252 away from the valve body 224, the sealing member 2251 will undergo a certain deformation because the connecting portion 2253 of the sealing member 2251 is fixed on the valve body 224. This allows the central main body portion 2252 and the convex structure 2254 to have a certain gap relative to the first recess 227, thereby connecting the second end of the first gas sub-channel 2231 with the second gas sub-channel 2232, thus connecting the gas channel 223.

[0066] Furthermore, fixing the connecting part 2253 to the valve body 224 not only prevents the sealing part 2251 from falling off the valve body 224 or being misplaced, but also allows the central body part 2252 to cooperate with the outer edge of the central body part 2252 to seal the first recess 227, thereby strengthening the sealing effect of the sealing part 2251.

[0067] In some embodiments, as shown in FIG10, the valve body 224 may also be provided with an annular flange 2259 surrounding the first recess 227 and protruding relative to the first recess 227. The annular flange 2259 abuts against the connecting portion 2253, and the abutting area between the annular flange 2259 and the connecting portion 2253 is located between the buckle 2258 and the central body portion 2252.

[0068] Specifically, when the central body portion 2252 blocks the first recess portion 227 to block the second end of the first gas sub-channel 2231, the annular flange 2259 can support the connecting portion 2253, thereby making the connecting portion 2253 less likely to be damaged in the pulling between the buckle 2258 and the central body portion 2252.

[0069] Optionally, as shown in Figure 10, the annular flange 2259 may be provided with a gas guide groove 2201, which can connect the second gas sub-channel 2232 and the first channel opening 221. The gas guide groove 2201 allows the second end of the first gas sub-channel 2231 to connect with the second gas sub-channel 2232 and the first channel opening 221 when the central main body 2252 moves away from the first gas sub-channel 2231 along with the movable part 231 without blocking the first recess 227. This minimizes the possibility of the connecting part 2253 sticking to the valve body 224, preventing the second end of the first gas sub-channel 2231 from connecting with the second gas sub-channel 2232.

[0070] In some embodiments, as shown in Figures 10 and 11, the force-bearing member 232 may include a plate 2321 and an extension support strip 2322. The extension support strip 2322 may extend from the plate 2321 toward the movable member 231 for linkage and cooperation with the movable member 231. The air valve assembly 220 is at least partially located in the space between the plate 2321 and the movable member 231.

[0071] Specifically, when the force-bearing component 232 is subjected to external force, the plate 2321 and the extension support strip 2322 can move towards the movable component 231, thereby engaging with the movable component 231. Positioning the valve assembly 220 at least partially within the space between the plate 2321 and the movable component 231 not only facilitates the movable component 231 in driving the sealing part 225 to block the first sub-gas passage 223 in the valve assembly 220, but also further restricts the movement of the plate 2321, thereby further limiting the movement range of the force-bearing component 232. This protects the force-bearing component 232 and reduces the likelihood of deformation or damage to the movable component 231 under external force.

[0072] In some embodiments, as shown in Figures 10 and 11, a portion of the force-bearing member 232 may include a plate 2321, and another portion of the force-bearing member 232 may include at least two extension support bars 2322. The plate 2321 may be disposed between the at least two extension support bars 2322. The extension support bars 2322 are used to link with the movable member 231, and the plate 2321 is used to receive external force so that the extension support bars 2322 drive the movable member 231 to move.

[0073] Optionally, as shown in Figures 10 and 11, there can be two extension support strips 2322. The two extension support strips 2322 are located at both ends of the plate 2321, and the other ends of the two extension support strips 2322 can respectively link with the movable component 231. This arrangement allows the plate 2321 to receive external forces, with the two extension supports at both ends supporting the plate 2321, making it less prone to deformation under external forces. Furthermore, when the two extension support strips 2322 drive the movable component 231, the movable component 231 is also subjected to forces from both ends, thus preventing deformation and damage. Therefore, this arrangement of the force-bearing component 232 makes the structure of the switch assembly 230 more stable and also enhances the service life of the reagent kit 200.

[0074] Of course, in other embodiments, the number of extension support strips 2322 can also be other values, such as three, four, five, etc. Alternatively, the force-bearing member 232 can be of other shapes, such as the extension support strip 2322 receiving external force, while the plate 2321 is linked with the movable member 231, etc. This embodiment will not be listed in detail here.

[0075] In some embodiments, the movable component 231 may include a movable rod 2311, one end of which is linked to the central main body 2252, and the other end of which is movably engaged with the docking body 228. The axial direction of the movable rod 2311 is parallel to the direction of the external force. The direction of the external force may be as shown by arrow C in Figure 8. The switch assembly 230 may also include a switch plate 233, which is linked to the movable rod 2311. Two extension brackets 2322 respectively abut against or connect to both ends of the switch plate 233. The sealing component 2251 is located in the space between the two extension brackets, the plate 2321, and the switch plate 233.

[0076] Optionally, the sealing member 2251 can be fixed to one end of the movable member 231, and the switch plate 233 can also be fixed to the movable rod 2311. When an external force is applied to the force-bearing member 232, causing the two extended support bars 2322 to push the switch plate 233 away from the first recess 227, the switch plate 233 can drive the movable rod 2311 to further drive the sealing member 2251 away from the first recess 227 along the axial direction of the movable rod 2311, thereby making the second end of the first gas sub-channel 2231 in the first recess 227 connected to the second gas sub-channel 2232.

[0077] Specifically, by placing the sealing element 2251 in the space between the two extended support strips 2322, the plate 2321 and the switch pressure plate 233, the switch assembly 230 can easily drive the sealing element 2251 to block or open the second end of the first gas sub-channel 2231 by translation. This simplifies the movement path of the sealing element 2251 and also simplifies the structural cooperation between the gas valve assembly 220 and the switch assembly 230. As a result, the reagent kit 200 can control the gas channel 223 to close or open with a simple design.

[0078] In some embodiments, as shown in FIG8, the bottom wall of the docking body 228 is provided with a second recess 2242, and the first recess 227 is disposed opposite to the second recess 2242 to form an active space 2243, in which the switch pressure plate 233, the movable rod 2311 and the central body part 2252 are all located within the active space 2243.

[0079] Specifically, the switch plate 233, one end of the movable rod 2311, and the sealing member 2251 can move within the movable space 2243. As the switch plate 233, movable rod 2311, and sealing member 2251 move away from the first recess 227, the movable space 2243 connects to the second gas sub-channel 2232, thus connecting to the first gas sub-channel 2231. The design of the movable space 2243 facilitates the retraction of the switch plate 233, movable rod 2311, and central body 2252 (away from the first recess 227), and also allows the second gas sub-channel 2232 to connect to a larger space, thereby enhancing the airflow in the first gas sub-channel 2231 and subsequent channel assembly 240. Furthermore, by placing the other end of the movable rod 2311 within the second recess 2242 instead of entirely within the movable space 2243, the volume occupied by the movable space 2243 is reduced, further reducing the space occupied by the valve assembly 220.

[0080] Optionally, the first channel opening 221 is disposed on the bottom wall of the docking body 228, and the first channel opening 221 is spaced apart from the second recess 2242.

[0081] The active space 2243 is connected to the first channel port 221, so that the second gas sub-channel 2232 can be connected to the first channel port 221 through the active space 2243, so that air can pass through the first channel port 221 and then sequentially through the second gas sub-channel 2232, the first gas sub-channel 2231 and the second channel port 222, and then be transmitted to the sample test card of the blood gas analyzer 1 through the second channel port 222.

[0082] Furthermore, by spacing the first channel opening 221 and the second recess 2242 apart, the second recess 2242 is less likely to affect the airflow in the first channel opening 221, the activity space 2243, and the second gas sub-channel 2232.

[0083] In some embodiments, as shown in FIG8, the second recess 2242 may include a first movable groove 2244 and a second movable groove 2245 that are interconnected. The second movable groove 2245 may be disposed at the bottom of the first movable groove 2244. The switch pressure plate 233 may be movably disposed in the first movable groove 2244, and a portion of the movable rod 2311 may be movably disposed in the second movable groove 2245.

[0084] Specifically, the first movable groove 2244 is closer to the first recessed area than the second movable groove 2245. One end of the switch plate 233 and the movable rod 2311 can move in the first movable groove 2244, while the other end of the movable rod 2311 can move in the second movable groove 2245. The second movable groove 2245 extends along the axial direction of the movable rod 2311, restricting its movement so that it can move along its axial direction, thereby causing the sealing member 2251 to seal the first recessed area or move away from it along the axial direction of the movable rod 2311. This arrangement prevents the movable rod 2311 and the sealing member 2251 from erroneously shifting during movement, ensuring that the gas passage 223 can be smoothly closed or opened by the switch assembly 230.

[0085] In some embodiments, as shown in Figures 8 and 10, the movable member 231 may be provided with an abutment portion 2312, and the switch assembly 230 further includes an elastic member 234. One end of the elastic member 234 may abut against the abutment portion 2312, and the other end of the elastic member 234 may abut against the docking body 228. The elastic member 234 is used to provide elastic force to the movable member 231 so that the movable member 231 controls the gas passage 223 to close.

[0086] Specifically, when the force-bearing member 232 is subjected to an external force, pushing the movable member 231 to move away from the first recess 227, the second end of the first gas sub-channel 2231 connects with the second gas sub-channel 2232. The elastic member 234 is compressed by the abutment portion 2312 of the movable member 231, undergoing elastic deformation and possessing a certain elastic restoring force. After the external force acting on the force-bearing member 232 disappears, the movable member 231 is pushed by the elastic restoring force of the elastic member 234 to move towards the first recess 227. The movable member 231 then drives the sealing member 2251 to seal the first recess 227, thereby sealing the second end of the first gas sub-channel 2231.

[0087] Among them, the elastic element 234 can be a spring, sheet, or other elastic component.

[0088] By setting the elastic element 234, the movable element 231 can move without the action of external force to block the second end of the first gas sub-channel 2231, so that the switch assembly 230 can close the gas channel 223, and also make the internal structure of the reagent kit 200 more compact.

[0089] In some embodiments, a connecting structure 2202 may be provided on the side of the valve body 224 facing the bottom wall. The bottom wall may be provided with a through hole 2246, which can connect the accommodating space 2241 and the outside of the docking body 228, and the through hole 2246 and the first channel opening 221 are spaced apart. The reagent kit 200 may further include a connecting component 280, a portion of which abuts against the bottom wall, and another portion of which can pass through the through hole 2246 and connect to the connecting structure 2202.

[0090] Optionally, the connecting component 280 may include screws, nuts, and other components, and the valve body 224 and the docking body 228 can be fixed to each other by screws and nuts. Of course, the connecting component 280 may also be a component connected by a snap-fit ​​2258, which will not be specifically listed here in this embodiment.

[0091] The above settings allow the valve body 224 and the docking body 228 to be fixed together, making the internal structure of the reagent kit 200 more stable.

[0092] In some embodiments, as shown in FIG10, the end cap 226 may be provided with a through hole 2261, and a portion of the force-receiving member 232 is disposed opposite to the through hole 2261, so that the actuator of the blood gas analyzer 1 can pass through the through hole 2261 and abut against a portion of the force-receiving member 232. The user can apply an external force to the force-receiving member 232 through the actuator, so that the force-receiving member 232 can move under the action of the external force.

[0093] In some embodiments, the through hole 2261 can be provided on the end wall of the end cap 226 and the valve body 224 opposite to each other. The plate 2321 of the force-bearing member 232 can be disposed between the end cap 226 and the valve body 224. Part of the surface of the plate 2321 can be exposed in the through hole 2261. The actuating component can connect to the exposed portion of the plate 2321 through the through hole 2261, thereby connecting the force-bearing member 232 and the actuating component. By connecting the force-bearing member 232 and the actuating component through a through hole 2261, while other parts of the force-bearing member 232 are covered by the end cap 226 and the docking body 228, the possibility of accidental activation of the force-bearing member 232, resulting in the incorrect closure of the moving part 231 or the connection of the gas passage 223, can be reduced.

[0094] Optionally, the ratio of the area of ​​the through hole 2261 to the total area of ​​the end face of the end wall can be less than or equal to 0.2. That is, the ratio of the area of ​​the force-bearing member 232 exposed through the through hole 2261 to receive external forces to the total area of ​​the end face of the end cap member 226 is between 0.1 and 0.4.

[0095] For example, the ratio of the area of ​​the through hole 2261 to the total area of ​​the end face of the end wall can be equal to values ​​such as 0.38, 0.3, 0.22, 0.13, etc.

[0096] If the ratio of the area of ​​the through hole 2261 to the total area of ​​the end face of the end wall is greater than 0.4, the force-bearing component 232 will have a large area exposed on the end face of the end wall, thus increasing the risk of accidental activation of the force-bearing component 232. If the ratio of the area of ​​the through hole 2261 to the total area of ​​the end face of the end wall is less than 0.1, it will be difficult for the force-bearing component 232 to connect with the actuator. Therefore, setting a smaller ratio of the through hole 2261 to the end face of the end wall can reduce the area of ​​the force-bearing component 232 exposed on the end face, thereby reducing the risk of accidental activation of the force-bearing component 232.

[0097] In some embodiments, as shown in FIG8, a portion of the force-bearing member 232 may be spaced apart from the end wall at a preset interval along the direction of the external force C.

[0098] Optionally, in the direction C of the external force, a portion of the force-receiving component 232 can be positioned between the end wall and the valve body 224. Therefore, by positioning a portion of the force-receiving component 232 at a predetermined distance from the end wall, the portion of the force-receiving component 232 positioned between the end wall and the valve body 224 can have a certain movement path between the end wall and the valve body 224. This allows the force-receiving component 232 to move between the end cover 226 and the valve body 224 under the action of the external force, thereby smoothly driving the movable component 231 to move, thus realizing the closure and connection of the gas channel 223.

[0099] Optionally, the channel assembly 240 may be located at least partially in the space between a portion of the force-bearing member 232 and the valve body 224, and the channel assembly 240 is used to dock with the second channel port 222, the liquid bag, and the sample test card of the blood gas analyzer 1, respectively.

[0100] This configuration allows for the channel assembly 240 to be installed first during reagent kit 200 assembly, ensuring that the channel assembly 240 is connected to the second channel port 222, the liquid bag, and the sample test card of the blood gas analyzer 1 before installing the force-bearing component 232. Since the movable component 231 is designed to close the gas channel 223 when not under external force, and the movable component 231 is activated by the force-bearing component 232 to open the gas channel 223, the gas channel 223 will remain closed if the adapter pipe 2412 is installed before the force-bearing component 232, thus reducing the risk of air leakage during reagent kit 200 assembly. Furthermore, it prevents accidental activation of the force-bearing component 232 during adapter pipe 2412 installation. If the force-bearing component 232 is installed before the adapter pipe 2412, the adapter pipe 2412, or other tools or hands, may compress the force-bearing component 232, leading to accidental activation of the gas channel 223.

[0101] In some embodiments, as shown in FIG7, the channel assembly 240 includes an interconnectable adapter 2412 and a conduit 2413. The adapter 2412 is used to mate with the second channel opening 222 to connect the conduit 2413 and the second channel opening 222. A portion of the adapter 2412 is located in the space between a portion of the force-bearing member 232 and the valve body 224. Optionally, a portion of the adapter 2412 may be located in the space between the force-bearing member 232 and the movable member 231.

[0102] Optionally, if the plate 2321 of the force-bearing component 232 is located between the valve body 224 and the end cap 226, then a portion of the adapter pipe 2412 is located in the space between the plate 2321 and the valve body 224, and the adapter pipe 2412 is connected to the second channel port 222 and communicates with the first gas sub-channel 2231.

[0103] Similarly, with this configuration, during the assembly of the reagent kit 200, the adapter 2412 can be installed first, allowing it to connect with the second channel port 222 before the force-bearing component 232 is installed. Since the movable component 231 is designed to close the gas channel 223 when not under external force, and the gas channel 223 is opened by the force-bearing component 232, the gas channel 223 will remain closed when the adapter 2412 is installed first but the force-bearing component 232 is not installed. This reduces the risk of air leakage during the assembly of the reagent kit 200.

[0104] In other embodiments, the docking body 228 may be disposed in the reagent kit 200. Specifically, the reagent kit 200 includes the docking body 228, which forms an accommodating space 2241 with an opening. The valve assembly 220 includes a valve body 224 and a sealing portion 225. The valve body 224 is disposed within the accommodating space 2241 to form a first gas sub-channel 2231. The sealing portion 225 is disposed between the valve body 224 and the docking body 228. A second gas sub-channel 2232 is formed between the sealing portion 225 and the valve body 224, and a movable member 231 is used to deform the sealing portion 225 to deform the second gas sub-channel 2232. Alternatively, the movable member 231 is used to move at least a portion of the sealing portion 225 relative to the valve body 224 to close or open the gas channel 223. The shielding component 270 includes a docking body 228, a force-bearing component 232, and a movable component 231, all of which are located within the accommodating space 2241.

[0105] In some embodiments, the end cap 226 may also be disposed on the reagent kit 200. Specifically, the reagent kit 200 further includes the end cap 226, which covers the opening of the accommodating space 2241. The end cap 226 is spaced apart from the force-receiving member 232, and a portion of the force-receiving member 232 is located between the end cap 226 and the valve body 224.

[0106] In summary, by placing the valve assembly 220 on the body 210 of the reagent kit 200 instead of on the blood gas analyzer 1, this application simplifies the structure of the blood gas analyzer 1, saves internal space, and facilitates the disassembly and maintenance of the reagent kit 200 and the valve assembly 220. Furthermore, by incorporating a switch assembly 230 within the reagent kit 200 to open or close the gas passage 223 in the valve assembly 220, the force-bearing component 232 in the switch assembly 230, under external force, drives the movable component 231 to close or open the gas passage 223, thereby opening or closing the valve assembly 220. This optimizes the structure of the valve assembly 220 and the actuator, and the end cap 226 further reduces the likelihood of the valve assembly 220 being accidentally opened.

[0107] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A kit for use in a blood gas analyzer, characterized in that, The kit comprises: a box body provided with a containing cavity, wherein a liquid bag is arranged in the containing cavity; a gas valve assembly arranged in the box body and provided with a first passage opening and a second passage opening, the first passage opening being used for air inlet, the second passage opening being used for connecting to a sample test card of a blood gas analyzer, and a gas passage being formed between the first passage opening and the second passage opening; a switch assembly comprising a movable member and a force receiving member, the movable member and the force receiving member being linked and matched, the force receiving member being used for receiving external force to move, and the movable member being linked and matched under the action of the force receiving member and being used for controlling the gas passage to be closed or connected.

2. The kit of claim 1, wherein The kit further comprises a shielding member arranged in the box body, the shielding member being formed with a shielding space, and the force receiving member being arranged in the shielding space or the force receiving member and the movable member being arranged in the shielding space.

3. The kit of claim 2, wherein The gas passage at least comprises a first gas sub-passage and a second gas sub-passage, a first end of the first gas sub-passage being connected to the second passage opening, a second end of the first gas sub-passage being connected to a first end of the second gas sub-passage, a second end of the second gas sub-passage being connected to the first passage opening, and the gas valve assembly comprising: a connecting main body formed with a containing space with an opening; a gas valve main body arranged in the containing space and used for forming the first gas sub-passage; a sealing part arranged between the gas valve main body and the connecting main body, the sealing part and the gas valve main body forming the second gas sub-passage, the movable member being used for deforming the sealing part to deform the second gas sub-passage, or the movable member being used for moving at least part of the sealing part relative to the gas valve main body to make the gas passage closed or connected; wherein the shielding member comprises the connecting main body, and the force receiving member and the movable member are arranged in the containing space.

4. The kit of claim 3, wherein The movable member and the sealing part are arranged on one side of the gas valve main body away from the opening end of the connecting main body, part of the force receiving member is arranged on one side of the gas valve main body close to the opening end of the connecting main body, and the other part of the force receiving member is linked and matched with the movable member.

5. The kit of claim 4, wherein The gas valve main body is provided with a first recess part spaced apart from the second passage opening, the first end of the first gas sub-passage is connected to the second passage opening, and the second end of the first gas sub-passage is arranged in the first recess part; The sealing part comprises a blocking member, the blocking member comprising: a central main part connected with the movable member and linked and matched with the first recess part to surround and form the second gas sub-passage; a connecting part surrounding an outer edge of the central main part and connected with the central main part, the connecting part being connected with a peripheral area of the first recess part; wherein the central main part is arranged to be movable relative to the gas valve main body to make at least part of the central main part block or open the second end of the first gas sub-passage.

6. The kit of claim 5, wherein The bottom of the first recess is recessed to form a first groove, the second end of the first gas sub-channel is arranged in the first groove, the sealing member comprises a convex top structure protruding relative to the central main body, the convex top structure is movably matched with the first groove, and the convex top structure is linked with the movable member, so as to move relative to the gas valve body under the driving of the movable member, so as to seal or open the second end of the first gas sub-channel.

7. The kit of claim 5, wherein The connecting portion is provided with a plurality of clamping holes, the gas valve body is provided with a plurality of buckles, the buckles are matched with the clamping holes, so that the connecting portion is connected with the gas valve body.

8. The kit of claim 7, wherein The gas valve body is further provided with an annular flange arranged around the first recess and protruding relative to the first recess, the annular flange abuts against the connecting portion, and the abutting area of the annular flange and the connecting portion is located between the buckle and the central main body.

9. The kit of claim 8, wherein The annular flange is provided with a gas guide groove, and the gas guide groove communicates the second gas sub-channel and the first channel opening.

10. The kit of claim 5, wherein The part of the force receiving member comprises a plate, and the other part of the force receiving member comprises at least two extension support strips, the plate is arranged between the at least two extension support strips, the extension support strips are used to abut against the movable member, and the plate is used to receive external force, so that the extension support strips drive the movable member to move.

11. The kit of claim 10, wherein The movable member comprises a movable rod, one end of the movable rod is linked with the central main body, and the other end of the movable rod is movably matched with the docking body, the axial direction of the movable rod is parallel to the action direction of the external force, the switch assembly further comprises a switch pressing piece, the switch pressing piece is linked with the movable rod, the two extension support strips abut against or are connected with two ends of the switch pressing piece, and the sealing member is located in the space between the two extension support strips, the plate and the switch pressing piece.

12. The kit of claim 11, wherein The bottom wall of the docking body is provided with a second recess, the first recess and the second recess are arranged opposite to each other to form a movable space, and the switch pressing piece, the movable rod and the central main body are located in the movable space.

13. The kit of claim 12, wherein The first channel opening is arranged on the bottom wall of the docking body, and the first channel opening is arranged in a spaced manner with the second recess.

14. The kit of claim 12, wherein The second recess comprises a first movable groove and a second movable groove which are communicated with each other, the second movable groove is arranged at the bottom of the first movable groove, the switch pressing piece is movably arranged in the first movable groove, and a part of the movable rod is movably arranged in the second movable groove.

15. The kit of claim 12, wherein The gas valve body is provided with a connecting structure on the side facing the bottom wall, the bottom wall is provided with a through hole, the through hole communicates the accommodation space with the outside of the docking body, the through hole is arranged in a spaced manner with the first channel opening, and the kit further comprises a connecting assembly, one part of the connecting assembly abuts against the bottom wall, and the other part of the connecting assembly passes through the through hole and is connected with the connecting structure.

16. The kit of claim 4, wherein The gas valve assembly further comprises an end cover member, the end cover member covers the opening of the accommodating space, the end cover member is arranged in a spaced manner with the force receiving member, and the part of the force receiving member is located between the end cover member and the gas valve body.

17. The kit of claim 16, wherein The switch assembly further comprises a magnetic member, the magnetic member is arranged on the part of the force receiving member; or the part of the force receiving member is a magnetic member, the magnetic member is connected with the other part of the force receiving member; wherein the magnetic member is used for coupling with the execution assembly of the blood gas analyzer to drive the movable member to move.

18. The kit of claim 16, wherein The end cover member is provided with a through hole, and the part of the force receiving member is arranged opposite to the through hole, so that the execution assembly of the blood gas analyzer can pass through the through hole and abut against the part of the force receiving member.

19. The kit of claim 18, wherein The through hole is arranged on the end wall of the end cover member and the gas valve body arranged opposite to each other; along the direction of the external force, the part of the force receiving member and the end wall are arranged in a spaced manner with a preset interval distance.

20. The kit of claim 16, wherein The blood gas analyzer further comprises a channel assembly, the channel assembly is arranged on the cartridge body, and the channel assembly is at least partially located in the space between the part of the force receiving member and the gas valve body, and the channel assembly is used for respectively abutting against the second channel port, the liquid bag and the sample test card of the blood gas analyzer.

21. The kit of claim 20, wherein, The channel assembly comprises an adapter pipe member and a catheter member in communication with each other, the adapter pipe member is used for abutting against the second channel port to connect the catheter member with the second channel port, and the adapter pipe member is located in the space between the part of the force receiving member and the gas valve body.

22. The kit of claim 1, wherein Without external force, the movable member is arranged to close the gas channel.

23. The kit of claim 22, wherein The movable member is provided with an abutting portion, the switch assembly further comprises a resilient member, one end of the resilient member abuts against the abutting portion, and the other end of the resilient member abuts against the abutting body, the resilient member is used for providing elastic force for the movable member, so that the movable member controls the gas channel to be closed.

24. The kit of claim 1, wherein The blood gas analyzer further comprises a channel assembly, the channel assembly is arranged on the cartridge body, and the channel assembly is at least partially located in the space between the force receiving member and the movable member, and the channel assembly is used for respectively abutting against the second channel port, the liquid bag and the sample test card of the blood gas analyzer.

25. The kit of claim 24, wherein The channel assembly comprises an adapter pipe member and a catheter member in communication with each other, the adapter pipe member is used for abutting against the second channel port to connect the catheter member with the second channel port, and the adapter pipe member is located in the space between the force receiving member and the movable member.

26. The kit of claim 1, wherein The gas channel at least comprises a first gas sub-channel and a second gas sub-channel, a first end of the first gas sub-channel abuts against the second channel port, a second end of the first gas sub-channel abuts against a first end of the second gas sub-channel, and a second end of the second gas sub-channel abuts against the first channel port, and the kit comprises: An abutting body forms an accommodating space with an opening; The gas valve assembly comprises: A gas valve body is arranged in the accommodating space and used to form the first gas sub-channel; A sealing part is arranged between the gas valve body and the docking body; the sealing part and the gas valve body form the second gas sub-channel, the movable part is used to deform the sealing part to deform the second gas sub-channel; or the movable part is used to move at least part of the sealing part relative to the gas valve body to close or connect the gas channel; The cover part includes the docking body, the force receiving part and the movable part are arranged in the accommodating space.

27. The kit of claim 26, wherein The movable part and the sealing part are arranged on the side of the opening end of the gas valve body away from the docking body, part of the force receiving part is arranged on the side of the opening end of the gas valve body close to the docking body, and the other part of the force receiving part is in linkage with the movable part.

28. The kit of claim 27, wherein The kit further includes an end cover part arranged on the opening of the accommodating space, the end cover part is arranged in space with the force receiving part, and the part of the force receiving part is located between the end cover part and the gas valve body.

29. The kit of claim 1, wherein The force receiving part includes a plate part and an extension support strip extending from the plate part to the side of the movable part, used to link with the movable part, and the gas valve assembly is at least partially located in the space between the plate part and the movable part.

30. A blood gas analyzer comprising: The kit includes: A device body; A kit is docked with the device body of the blood gas analyzer; The kit includes: A box body provided with an accommodating cavity, the accommodating cavity is provided with a liquid bag; A gas valve assembly is arranged in the box body and provided with a first channel port and a second channel port, the first channel port is used for gas inlet, the second channel port is used for connecting to the sample test card of the blood gas analyzer, and the first channel port and the second channel port form a gas channel; A switch assembly includes a movable part and a force receiving part, the movable part and the force receiving part are in linkage; the force receiving part is used to receive external force to move, and the movable part is in linkage under the action of the force receiving part and controls the gas channel to close or connect.

31. The blood gas analyzer of claim 30, wherein, The blood gas analyzer further includes an execution assembly for providing external force to the force receiving part, and the force receiving part is used to drive the movable part based on the external force to close or connect the gas channel.

32. The blood gas analyzer of claim 30, wherein, The kit includes a channel assembly arranged in the box body, the channel assembly is used to dock with the liquid bag, the second channel port and the sample test card of the blood gas analyzer respectively to guide the liquid of the liquid bag to the sample test card of the blood gas analyzer.

33. The blood gas analyzer of claim 32, wherein, The kit includes a gas valve and a plurality of liquid valves, the liquid valves are respectively docked with the liquid bag and the channel assembly, the gas valve is docked with the channel assembly, the gas valve and the plurality of liquid valves are respectively arranged in the box body, and the gas valve includes the gas valve assembly and the switch assembly; wherein the liquid valve is provided with a selective liquid channel to selectively connect or close the liquid channel at least with the fluid channel in the channel assembly.

34. The blood gas analyzer of any of claims 30-33, wherein, The liquid bag includes a washing liquid bag or a reagent liquid bag, and the device body is not provided with a fluid channel.

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