Blood gas analyzer, and kit for blood gas analyzer

Abstract

The present application relates to the field of analytical instruments, and especially relates to a blood gas analyzer, and a kit for a blood gas analyzer. The kit comprises: a kit body, which is provided with an accommodating cavity, wherein a liquid bag is provided in the accommodating cavity; a valve body assembly, which is disposed in the kit body and is provided with a first channel port and a second channel port, wherein the first channel port is configured to connect to the liquid bag, the second channel port is configured to input or output a fluid, and a fluid channel is formed between the first channel port and the second channel port; and a switch assembly, which comprises a movable member and a force-receiving member, wherein the movable member is in linkage cooperation with the force-receiving member, the movable member and the force-receiving member are both located outside the fluid channel, the force-receiving member is configured to receive an external force and move accordingly, and the movable member is driven by the force-receiving member to move in linkage and make at least part of the fluid channel deform, thereby closing or connecting the fluid channel. In this way, during the process of liquid being output from or input into the fluid channel, the liquid cannot come into contact with the movable member, so that the possibility of reactions between the liquid and the movable member is reduced, thereby reducing the impact thereof on the properties of the liquid.

Description

Blood gas analyzer and reagent kits for blood gas analyzer [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 uses electrodes to measure relevant indicators such as pH, partial pressure of carbon dioxide (PCO2), and partial pressure of oxygen (PO2) in blood and other liquids within a short period of time. In the process of using a blood gas analyzer to detect medical biochemical parameters, the reagent kit plays a crucial role as the reagent carrier. During sample testing, the reagent kit connects to the liquid bag via a docking component. When the docking component connects to the liquid bag, the inlet of the component aligns with the outlet of the bag to establish a connection. However, in related technologies, difficulties in connecting the inlet and outlet often arise, and problems such as poor connection and leakage are prone to occur, thus affecting equipment performance.

[0003] [Summary of the Invention]

[0004] The technical problem to be solved by this application is to provide a blood gas analyzer and a reagent kit for the blood gas analyzer to reduce the impact on the durability and stability of the device performance.

[0005] This application provides a reagent kit for a blood gas analyzer. The reagent kit includes: a box body with a receiving cavity containing a liquid bag; a valve assembly disposed on the box body and having a first channel port and a second channel port, the first channel port being for connecting to the liquid bag, and the second channel port being for inputting or outputting fluid, forming a fluid channel between the first channel port and the second channel port; and a switching assembly including a movable member and a force-receiving member, the movable member and the force-receiving member being linked and cooperating, both the movable member and the force-receiving member being located outside the fluid channel, the force-receiving member being used to receive external force and move, the movable member being linked under the action of the force-receiving member and causing at least a portion of the fluid channel to deform, thereby closing or opening the fluid channel.

[0006] In some embodiments, the valve body assembly includes: an isolator, at least a portion of which serves as a channel wall for the fluid passage, such that when the movable member is linked under the action of the force-bearing member, at least a portion of the isolator can move or deform to block or open one end of the second channel opening.

[0007] In some embodiments, the valve body assembly includes: a valve body, wherein a first channel opening is formed on one side of the bottom of the valve body, one end of the first channel opening is used to connect to the liquid bag, and the other end of the first channel opening extends to the second channel opening via the separator.

[0008] In some embodiments, the isolation member includes an isolation body disposed adjacent to the second channel opening; the isolation body has a receiving portion on the side facing the second channel opening, and at least a portion of the movable member at one end facing the second channel opening is capable of pushing or moving away from the receiving portion on the side opposite to the second channel opening, so that the receiving portion moves to block or open the second channel opening.

[0009] In some embodiments, at least a portion of the isolation body, the receiving portion, and at least a portion of the bottom of the valve body together form an accommodating space, which is spaced apart from the first channel opening; the movable member is disposed in the accommodating space, and when the movable member is linked under the action of the force member, the movable member can move in the accommodating space in a direction away from or close to the receiving portion, causing the receiving portion to move or deform.

[0010] In some embodiments, the movable member has an annular groove, and the receiving portion is recessed on the side opposite to the second channel opening to form a groove. The opening of the groove has a first protruding ring, which is embedded in the annular groove so that the groove covers one end of the movable member.

[0011] In some embodiments, the switch assembly includes: a first elastic member sleeved on the movable member, the first elastic member having a first elastic force that is always applied to the movable member; when the force-receiving member receives an external force, the first elastic member and the force-receiving member jointly drive the movable member to move toward the isolation body to abut against at least a portion of the isolation body; or when the force-receiving member receives an external force, the force-receiving member is used to overcome the first elastic force, and the movable member is linked under the action of the force-receiving member to move the movable member away from the isolation body.

[0012] In some embodiments, the switch assembly includes: a second elastic member sleeved on the movable member, the second elastic member having a second elastic force that is always applied to the movable member; when the force-receiving member receives an external force, the second elastic member and the force-receiving member jointly drive the movable member to move away from the isolation body; or when the force-receiving member receives an external force, the force-receiving member is used to overcome the second elastic force, and the movable member is linked under the action of the force-receiving member to move towards the isolation body to abut against at least a portion of the isolation body.

[0013] In some embodiments, the isolation member includes a protrusion disposed on the side of the isolation body facing the first channel opening, and the other end of the first channel opening extends to the second channel opening via the protrusion.

[0014] In some embodiments, the protrusion has a first through hole, one end of which is connected to the other end of the first channel opening, and the other end of which leads to the second channel opening.

[0015] In some embodiments, the radial dimension of the first through hole is equal to or greater than the radial dimension of the first channel opening.

[0016] In some embodiments, the switch assembly includes: a transmission member sleeved on the movable member and abutting against the force-receiving member, the transmission member being able to move together with the movable member within the accommodating space when the force-receiving member receives an external force, so as to drive the movable member to move in a direction away from or towards the receiving portion.

[0017] In some embodiments, the force-receiving member has a protrusion located on the side of the force-receiving member facing the transmission member, and the end of the protrusion abuts against the transmission member. When the force-receiving member receives an external force, the force-receiving member drives the transmission member to move within the active space through the protrusion.

[0018] In some embodiments, the number of protrusions is two, and the two protrusions are disposed on the same side of the force-bearing member and located on both sides of the center point of the force-bearing member.

[0019] In some embodiments, the two protrusions are offset from the first channel opening to avoid the first channel opening.

[0020] In some embodiments, the valve body assembly includes a support member located at least partially between the isolator and the bottom of the valve body, the support member at least covering the area of ​​the isolator corresponding to the fluid passage.

[0021] In some embodiments, the support member has a first mounting hole and a second mounting hole, the first mounting hole being correspondingly disposed to the first channel opening, and the second mounting hole being correspondingly disposed to the movable member, and the support member being sleeved on the body of the isolation member through the first mounting hole and the second mounting hole.

[0022] In some embodiments, the valve body assembly further includes: a bracket disposed within the valve body and covering the bottom of the valve body; a second channel opening is formed on one side of the bottom of the bracket.

[0023] In some embodiments, an annular groove is formed on one side of the bottom of the bracket, the annular groove surrounds the second channel opening, and the receiving part is at least partially accommodated in the annular groove.

[0024] In some embodiments, the bracket has a first receiving groove on the side opposite to the movable member, a portion of the force-bearing member is received in the first receiving groove, another portion of the force-bearing member passes through the bracket to abut against the transmission member, and the second channel opening is located at the bottom of the first receiving groove.

[0025] In some embodiments, the bottom of the first receiving groove is recessed to form a second receiving groove, the second channel opening is located at the bottom of the second receiving groove, a connector is embedded in the second receiving groove, the connector is provided with a second through hole, one end of the second through hole is connected to the other end of the second channel opening, and the other end of the second through hole is used for inputting or outputting fluid.

[0026] In some embodiments, the top of the force-bearing member has a third through hole, and the adapter of the reagent kit is inserted into the third through hole, the second through hole and the second channel opening are connected.

[0027] In some embodiments, the isolation element is a flexible element.

[0028] In some embodiments, a second protruding ring is provided around the periphery of the movable member, and the transmission member is located on the side of the second protruding ring facing the second channel opening.

[0029] In some embodiments, the linkage between the force-bearing component and the moving component includes magnetic attraction or mechanical transmission.

[0030] This application also provides a blood gas analyzer. The blood gas analyzer includes: a device body; a reagent kit, interchangeably dockable with the device body of the blood gas analyzer; the reagent kit includes: a box body with a receiving cavity, wherein a liquid bag is disposed in the receiving cavity; a first valve assembly disposed on the box body and having a first channel port and a second channel port, the first channel port being used to connect with the liquid bag, the second channel port being used to input or output fluid, and a fluid channel being formed between the first channel port and the second channel port; a switching assembly including a movable member and a force-receiving member, the movable member and the force-receiving member being linked and cooperating, both the movable member and the force-receiving member being located outside the fluid channel, the force-receiving member being used to receive external force and move, the movable member being linked under the action of the force-receiving member and causing at least a portion of the fluid channel to deform, thereby closing or opening the fluid channel.

[0031] In some embodiments, the kit further includes: a first infusion path disposed on the kit body, and a second channel port communicating with the first infusion path for introducing reagents into the test bag of the blood gas analyzer.

[0032] In some embodiments, the liquid bag includes: a reagent liquid bag or a cleaning liquid bag;

[0033] The kit further includes: a second valve body assembly and a second infusion line connected to each other, the second infusion line being disposed in the kit body, and the cleaning solution bag being fed into the docking groove of the kit via the second valve body assembly and the second infusion line.

[0034] In some embodiments, the kit further includes: a third valve assembly and a gas channel connected to each other, the gas channel being disposed in the kit body, the kit communicating with the external space via the third valve assembly and the gas channel, the third valve assembly being connected to the second channel port.

[0035] In some embodiments, the main body of the device does not have a liquid passage.

[0036] Unlike existing technologies, the reagent kit provided in this application has the following structural design: First, by placing the moving parts and the force-receiving parts outside the fluid channel, the liquid in the fluid channel will not come into contact with the moving parts during the liquid output or input process, thereby reducing the possibility of a reaction between the liquid in the fluid channel and the moving parts. This reduces the impact on the liquid composition in the fluid channel caused by the moving parts being located inside the liquid bag or in contact with the fluid in the fluid channel, thus reducing the impact on the liquid's performance and ensuring, to a certain extent, that the device's performance is not affected. Second, the fluid channel can be selectively closed or opened through the linkage between the moving parts and the force-receiving parts. In other words, when the force-receiving parts move due to external force, the moving parts can be simultaneously moved, causing at least a portion of the fluid channel to deform, selectively blocking or opening the second channel opening, thereby achieving selective closure or opening of the fluid channel. [Attached Image Description]

[0037] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0038] Figure 1 is a schematic diagram of the blood gas analyzer provided in an embodiment of this application.

[0039] Figure 2 is a three-dimensional exploded view of the blood gas analyzer in the embodiment shown in Figure 1.

[0040] Figure 3 is a schematic diagram of the structure of the reagent kit in the embodiment shown in Figure 2.

[0041] Figure 4 is a three-dimensional exploded view of the kit in the embodiment shown in Figure 2.

[0042] Figure 5 is a schematic diagram of the valve body assembly in the embodiment shown in Figure 3.

[0043] Figure 6 is a schematic diagram of the valve body assembly and the liquid bag in the docking state in the embodiment shown in Figure 5.

[0044] Figure 7 is a three-dimensional exploded view of the valve body assembly in the embodiment shown in Figure 5.

[0045] Figure 8 is a structural schematic diagram of some components in the valve body assembly shown in the embodiment of Figure 7.

[0046] Figure 9 is a structural schematic diagram of some components in the valve body assembly shown in Figure 8 from another perspective.

[0047] Figure 10 is a schematic cross-sectional view of the valve body assembly along line AA in the embodiment shown in Figure 5, showing the valve body assembly in the first state.

[0048] Figure 11 is a schematic cross-sectional view of the valve body assembly along line AA in the embodiment shown in Figure 5, showing the valve body assembly in the second state.

[0049] Figure 12 is a schematic diagram of the structure of the tank in the embodiment shown in Figure 7.

[0050] Figure 13 is a structural schematic diagram of the stressed component in the embodiment shown in Figure 7.

[0051] Figure 14 is a schematic diagram of the cross-sectional structure of the bracket along line AA in the embodiment shown in Figure 5.

Detailed Implementation Methods

[0052] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and not for limiting the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0053] The terms "first," "second," etc., used in this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "featured," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0054] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0055] In the process of medical biochemical parameter testing, reagent kits play a crucial role as reagent carriers in blood gas analysis. During sample testing using a blood gas analyzer, the kit connects to a liquid bag via a docking assembly. In the structural design of this docking assembly, a spring is typically placed inside the liquid bag to push a push rod and create a seal. Therefore, the spring inside the liquid bag is in constant contact with the reagents. Since the spring is made of metal, such as stainless steel, there is a possibility that the spring and the reagents in the liquid bag may react, affecting the reagent composition and consequently impacting its performance, thus affecting the performance of the equipment.

[0056] In order to improve or solve the above technical problems, this application proposes at least the following embodiments.

[0057] Please refer to Figures 1 to 7. Figure 1 is a structural schematic diagram of the blood gas analyzer provided in the embodiment of this application. Figure 2 is a three-dimensional exploded schematic diagram of the blood gas analyzer in the embodiment shown in Figure 1. Figure 3 is a structural schematic diagram of the reagent kit in the embodiment shown in Figure 2. Figure 4 is a three-dimensional exploded schematic diagram of the reagent kit in the embodiment shown in Figure 2. Figure 5 is a structural schematic diagram of the valve body assembly in the embodiment shown in Figure 3. Figure 6 is a structural schematic diagram of the valve body assembly and the liquid bag in the docking state in the embodiment shown in Figure 5. Figure 7 is a three-dimensional exploded schematic diagram of the valve body assembly in the embodiment shown in Figure 5.

[0058] In some embodiments, as shown in Figures 1 to 7, this application provides a blood gas analyzer 200. The blood gas analyzer 200 may include a device body 210 and a reagent kit 220. The reagent kit 220 is connected to the device body 210.

[0059] In some embodiments, the kit 220 includes a kit body 120, a first valve assembly 100, and a switch assembly. The kit body 120 has a receiving cavity 121, which may contain a liquid bag 300 (as shown in FIG. 6). Referring to FIG. 10, the first valve assembly 100 has a first channel port 201 and a second channel port 205. The first channel port 201 is used to connect to the liquid bag 300, and the second channel port 205 is used to input or output fluid, forming a fluid channel between the first channel port 201 and the second channel port 205. The switch assembly includes a movable member 31 and a force-receiving member 32 that are linked together. Both the movable member 31 and the force-receiving member 32 are located outside the fluid channel. The force-receiving member 32 is used to receive external force and move. The movable member 31 is linked under the action of the force-receiving member 32, causing at least a portion of the fluid channel to deform, thereby closing or opening the fluid channel.

[0060] Specifically, the linkage between the movable part 31 and the force-receiving part 32 means that when the force-receiving part 32 moves, it triggers the movable part 31 to move, so that the position of the movable part 31 changes.

[0061] In the structural design of the reagent kit 220 provided in this application embodiment, on the one hand, by placing the movable member 31 and the force-receiving member 32 outside the fluid channel, the liquid in the fluid channel will not come into contact with the movable member 31 during the liquid output or input process of the fluid channel, thereby reducing the possibility of reaction between the liquid in the fluid channel and the movable member 31. This reduces the impact on the liquid composition in the fluid channel caused by the movable member 31 being located inside the liquid bag 300 or by the movable member 31 coming into contact with the fluid in the fluid channel, thereby reducing the impact on the liquid's performance and ensuring, to a certain extent, that the device's performance is not affected. On the other hand, the linkage between the movable member 31 and the force-receiving member 32 allows for selective closure or connection of the fluid channel. In other words, when the force-receiving member 32 moves under external force, it simultaneously drives the movable member 31 to deform at least part of the fluid channel, selectively blocking or opening the second channel opening 205, thereby achieving selective closure or connection of the fluid channel. For example, when the first valve body assembly 100 is in the working state, an external force can be applied to cause the force-receiving member 32 and the moving member 31 to engage in a linkage, causing at least a portion of the fluid passage to deform, and simultaneously causing the second passage port 205 to open, that is, the fluid passage is in a connected state. When the first valve body assembly 100 is in the non-working state, an external force can be applied to cause the force-receiving member 32 and the moving member 31 to engage in a linkage, causing at least a portion of the fluid passage to deform, and simultaneously causing the second passage port 205 to close, that is, the fluid passage is in a closed state.

[0062] It should be noted that regardless of whether the first valve assembly is in the working or non-working state, the movable part 31 is always outside the fluid channel and will not come into contact with the liquid in the fluid channel or the liquid bag 300. This achieves separation of the movable part 31 from the liquid, reducing the possibility of reaction between the movable part 31 and the liquid. The working state of the first valve assembly can include the use of the liquid bag 300, such as the process of discharging fluid, passing the liquid (e.g., calibration solution, test solution, etc.) from the liquid bag 300 into the test card of the blood gas analyzer 200, or discharging the liquid (e.g., cleaning solution) from the liquid bag 300 into the docking slot of the reagent kit 220; or the process of inputting fluid, inputting liquid into the liquid bag 300 through a filling device. In this case, since the movable part 31 is located outside the fluid channel, it is directly isolated from the fluid. Therefore, whether discharging or inputting fluid, the movable part 31 will not come into contact with the fluid in the fluid channel, thereby reducing the possibility of reaction between the movable part 31 and the fluid in the fluid channel. The non-working state of the first valve assembly can include the production process and transportation process of the liquid bag 300. At this time, the fluid channel is closed, so the moving part 31 will not come into contact with the liquid in the liquid bag 300. In other words, during the production, transportation and use of the liquid bag 300, the moving part 31 will not come into contact with the liquid inside the liquid bag 300 and react chemically.

[0063] It is understood that the fluid output or input through the fluid channel may include the liquid in the liquid bag 300, such as cleaning fluid, reagents, etc.

[0064] In some embodiments, the reagent kit 220 further includes: a first infusion path disposed in the kit body 120, and a second channel port 205 connected to the first infusion path for introducing reagents into the test bag of the blood gas analyzer 200.

[0065] In some embodiments, the liquid bag 300 includes a reagent liquid bag 300 or a cleaning liquid bag 300. The kit 220 also includes a second valve assembly 110 and a second infusion path connected to each other. The second infusion path is disposed in the kit body 120, and the cleaning liquid bag 300 introduces cleaning solution into the docking groove of the kit 220 via the second valve assembly 110 and the second infusion path.

[0066] In some embodiments, the kit 220 further includes a third valve assembly 130 and a gas channel connected to each other. The gas channel is located in the kit body 120. The kit 220 communicates with the outside space via the third valve assembly 130 and the gas channel. The third valve assembly 130 is connected to the second channel port 205.

[0067] In other words, in the structural design of the blood gas analyzer 200 provided in this application embodiment, the first and second infusion lines of the blood gas analyzer 200 are integrated into the reagent kit 220, while the main body of the device 210 does not have a fluid channel. That is, by providing an independent fluid channel on the reagent kit 220, fluids (e.g., reagents, cleaning solutions, etc.) can flow directly through the independent fluid channel on the reagent kit 220 without passing through the blood gas analyzer 200. Therefore, this structural design achieves the following technical effects: since there is no need to provide a fluid channel on the blood gas analyzer 200, the structure of the blood gas analyzer 200 is simplified, effectively reducing the maintenance cost of the blood gas analyzer 200, and also reducing the risk of damage to the main body of the device 210 due to breakage of the reagent kit 220 or leakage of the fluid lines. Alternatively, in some embodiments, the first and second infusion lines and the gas channel can all be integrated into the reagent kit 220. In this case, the main body of the device 210 does not have either a fluid channel or a gas channel.

[0068] It should be noted that, in some embodiments, the liquid in the reagent bag 300 may include reagents such as calibration solution and test solution. The liquid in the cleaning solution bag 300 may include cleaning solution.

[0069] It should be noted that in some embodiments, the first and second infusion lines may also be located in the device body 210. That is, when one end of the second channel port 205 of the reagent kit 220 is connected to the first infusion line of the device body 210, the reagent can be introduced into the test card through the sampling component. When the second valve assembly of the reagent kit 220 is connected to the second infusion line of the device body 210, cleaning solution can be introduced into the docking groove of the reagent kit 220.

[0070] In some embodiments, the actuator of the blood gas analyzer 200 can be mounted on the replaceable reagent kit 220. Further, the actuator mounted on the reagent kit 220 can be powered by an energy storage device such as a battery, or connected to the main body 210 via electrical contacts, wires, or other components. The actuator can include one of a solenoid valve, an electric actuator, a multi-way valve, etc. It should be noted that the actuator can also be other driving structures, as long as they can provide external force to cause the linkage between the force-receiving member 32 and the moving member 31, achieving at least partial deformation of the fluid channel, so that the fluid channel is in a closed or open state.

[0071] In some embodiments, the actuator can also be mounted on the device body 210, and the actuator can be used to provide external force applied to the force-bearing member 32 so that the movable member 31 can be linked and cooperate with it. The actuator mounted on the device body 210 can be reused, and even if the old reagent kit 220 is replaced with a new reagent kit 220, the actuator can still perform the work of driving the movable member 31 normally. Optionally, the power source for the actuator mounted on the device body 210 can be provided by the circuitry of the blood gas analyzer 200.

[0072] The valve body assembly of reagent kit 220 is described in detail below. It should be noted that the first valve body assembly 100 described above may include the valve body assembly and switch assembly provided in the embodiments below.

[0073] Please refer to Figures 8 to 14, and in conjunction with Figures 5 to 7. Figure 8 is a structural schematic diagram of some components in the valve body assembly of the embodiment shown in Figure 7. Figure 9 is a structural schematic diagram of some components in the valve body assembly of the embodiment shown in Figure 8 from another perspective. Figure 10 is a cross-sectional structural schematic diagram of the valve body assembly along line AA in the embodiment shown in Figure 5, showing the valve body assembly in a first state. Figure 11 is a cross-sectional structural schematic diagram of the valve body assembly along line AA in the embodiment shown in Figure 5, showing the valve body assembly in a second state. Figure 12 is a structural schematic diagram of the groove in the embodiment shown in Figure 7. Figure 13 is a structural schematic diagram of the force-bearing component in the embodiment shown in Figure 7. Figure 14 is a cross-sectional structural schematic diagram of the bracket along line AA in the embodiment shown in Figure 5.

[0074] As shown in Figures 2 to 7, in some embodiments, the reagent kit 220 includes a kit body 120, a valve assembly, and a switch assembly. The kit body 120 has a receiving cavity, which may contain a liquid bag 300. The valve assembly has a first channel port 201 and a second channel port 205. The first channel port 201 is used to connect to the liquid bag 300, and the second channel port 205 is used to input or output fluid, forming a fluid channel between the first channel port 201 and the second channel port 205. The switch assembly includes a movable member 31 and a force-receiving member 32 that are linked together. Both the movable member 31 and the force-receiving member 32 are located outside the fluid channel. The force-receiving member 32 is used to receive external force and move. The movable member 31 is linked under the action of the force-receiving member 32, causing at least a portion of the fluid channel to deform, thereby closing or opening the fluid channel.

[0075] In the structural design of the reagent kit 220 provided in this application embodiment, on the one hand, by placing the movable member 31 and the force-receiving member 32 outside the fluid channel, the liquid in the fluid channel will not come into contact with the movable member 31 during the liquid output or input process of the fluid channel, thereby reducing the possibility of reaction between the liquid in the fluid channel and the movable member 31. This reduces the impact on the liquid composition in the fluid channel caused by the movable member 31 being located inside the liquid bag 300 or by the movable member 31 coming into contact with the fluid in the fluid channel, thereby reducing the impact on the liquid's performance and ensuring, to a certain extent, that the device's performance is not affected. On the other hand, the linkage between the movable member 31 and the force-receiving member 32 allows for selective closure or connection of the fluid channel. In other words, when the force-receiving member 32 moves under external force, it simultaneously drives the movable member 31 to deform at least part of the fluid channel, selectively blocking or opening the second channel opening 205, thereby achieving selective closure or connection of the fluid channel. For example, when the valve body assembly is in the working state, an external force can be applied to cause the force-receiving member 32 and the moving member 31 to engage in a linkage, causing at least a portion of the fluid passage to deform, and simultaneously causing the second passage port 205 to open, that is, the fluid passage is in a connected state. When the valve body assembly is in the non-working state, an external force can be applied to cause the force-receiving member 32 and the moving member 31 to engage in a linkage, causing at least a portion of the fluid passage to deform, and simultaneously causing the second passage port 205 to close, that is, the fluid passage is in a closed state.

[0076] It should be noted that regardless of whether the first valve assembly is in the working or non-working state, the movable part 31 is always outside the fluid channel and will not come into contact with the liquid in the fluid channel or the liquid bag 300. This achieves separation of the movable part 31 from the liquid, reducing the possibility of reaction between the movable part 31 and the liquid. The working state of the first valve assembly can include the use of the liquid bag 300, such as the process of discharging fluid, passing the liquid (e.g., calibration solution, test solution, etc.) from the liquid bag 300 into the test card of the blood gas analyzer 200, or discharging the liquid (e.g., cleaning solution) from the liquid bag 300 into the docking slot of the reagent kit 220; or the process of inputting fluid, inputting liquid into the liquid bag 300 through a filling device. In this case, since the movable part 31 is located outside the fluid channel, it is directly isolated from the fluid. Therefore, whether discharging or inputting fluid, the movable part 31 will not come into contact with the fluid in the fluid channel, thereby reducing the possibility of reaction between the movable part 31 and the fluid in the fluid channel. The non-working state of the first valve assembly can include the production process and transportation process of the liquid bag 300. At this time, the fluid channel is closed, so the moving part 31 will not come into contact with the liquid in the liquid bag 300. In other words, during the production, transportation and use of the liquid bag 300, the moving part 31 will not come into contact with the liquid inside the liquid bag 300 and react chemically.

[0077] In some embodiments, the valve body assembly further includes an isolator 33. At least a portion of the isolator 33 serves as a channel wall for the fluid passage, allowing at least a portion of the isolator 33 to move or deform when the movable member 31 is activated by the force-bearing member 32, thereby blocking or opening one end of the second channel port 205.

[0078] Specifically, in some embodiments, the isolating member 33 can be a rigid rubber pad. Through the linkage between the movable member 31 and the force-receiving member 32, at least part of the isolating member 33 can be driven to move, for example, towards or away from the end of the second channel opening 205. The corresponding channel wall formed therein will also deform. The deformed channel wall can block or open one end of the second channel opening 205, thus realizing the closure or connection of the fluid channel.

[0079] In some embodiments, the isolator 33 can also be a flexible element, such as a flexible rubber pad. Therefore, the isolator 33 has good flexibility and elasticity. Through the linkage between the movable element 31 and the force-bearing element 32, when the isolator 33 is subjected to a certain force, at least a portion of the isolator 33 will deform, and the corresponding channel wall will also deform accordingly. This allows for selective blocking or opening of one end of the second channel opening 205. In other words, by changing the active state or deforming at least a portion of the isolator 33, which serves as the fluid channel wall, the fluid channel can be blocked or opened.

[0080] In some embodiments, the valve body assembly further includes a valve body, with a first channel port 201 formed on one side of the bottom of the valve body. One end of the first channel port 201 is used to connect to the liquid bag 300, and the other end of the first channel port 201 connects to a second channel port 205 via a separator 33. That is, the separator 33 can serve as a hub connecting the first channel port 201 and the second channel port 205. Thus, through the linkage between the force-bearing member 32 and the moving member 31, the separator 33 can be controlled to move or deform at least partially, thereby selectively controlling the communication state between the first channel port 201 and the second channel port 205.

[0081] In some embodiments, the isolation member 33 may include an isolation body 331 disposed adjacent to the second channel opening 205. The isolation body 331 has a receiving portion 332 on the side facing the second channel opening 205, and at least a portion of the end of the movable member 31 facing the second channel opening 205 is capable of pushing or moving away from the side of the receiving portion 332 opposite to the second channel opening 205, so that the receiving portion 332 moves to block or open the second channel opening 205.

[0082] Specifically, the side of the receiving part 332 facing the second channel opening 205 can serve as the channel wall of the fluid channel. At least a portion of the end of the movable member 31 facing the second channel opening 205 is defined as the first end of the movable member 31, and the end of the movable member 31 away from the second channel opening 205 is defined as the second end of the movable member 31. The side of the receiving part 332 facing away from the second channel opening 205 is defined as the first side of the receiving part 332, and the side of the receiving part 332 facing the second channel opening 205 is defined as the second side of the receiving part 332. An external force with a direction along the second end of the movable member 31 towards the first end of the movable member 31 is defined as a first external force. An external force with a direction along the first end of the movable member 31 towards the second end of the movable member 31 is defined as a second external force. That is, the direction of the first external force is opposite to the direction of the second external force.

[0083] In some embodiments, when the force-receiving member 32 is subjected to a first external force, due to the linkage between the force-receiving member 32 and the movable member 31, the first end of the movable member 31 can move towards the first side of the receiving portion 332, thereby pushing the first side of the receiving portion 332 towards the second channel opening 205. Simultaneously, the second side of the receiving portion 332 also moves towards the second channel opening 205 (i.e., along the direction of the first external force) until the second channel opening 205 is blocked. That is, the first end of the movable member 31 applies a first force to the first test point of the receiving portion 332, causing the second side of the receiving portion 332 to also receive a second force in the same direction as the first force, thereby pressing against the second channel opening 205. In some embodiments, when the receiving portion 332 is a flexible member, such as a flexible rubber pad, the second side of the receiving portion 332 will also deform due to the second force, and the deformed receiving portion 332 can press against the second channel opening 205, thereby blocking the second channel opening 205.

[0084] Similarly, when the force-receiving member 32 is subjected to a second external force, due to the linkage between the force-receiving member 32 and the movable member 31, the first end of the movable member 31 can move away from the first side of the receiving part 332 until it leaves the first side of the receiving part 332, or the first end of the movable member 31 does not apply force to the first side of the receiving part. At the same time, because the second side of the receiving part 332 is not subjected to the force applied by the first end of the movable member 31, the second side of the receiving part 332 cannot or has difficulty pressing against the second channel opening 205, thus creating a gap between the receiving part 332 and the second channel opening 205. That is, the second channel opening 205 also opens at this time. Similarly, when the receiving part 332 is a flexible member, the second side of the receiving part 332 will deform accordingly, and the deformed receiving part 332 can make the second channel opening 205 open.

[0085] Therefore, through the linkage between the movable part 31 and the force-receiving part 32, and by selectively applying two opposing external forces, the first end of the movable part 31 can selectively push the first side of the receiving part 332 toward the direction of approaching or leaving the second channel opening 205, so that one side of the receiving part 332 moves toward the direction of approaching or leaving the second channel opening 205, or the second side of the receiving part 332 can deform accordingly to block or open the second channel opening 205.

[0086] In other words, since the second side of the receiving part 332 always faces away from the first end of the movable member 31, the movable member 31 applies force to the first side of the receiving part 332, thereby indirectly pushing or moving away from the second side of the receiving part 332. Furthermore, the first side of the receiving part 332 does not constitute a fluid channel, while at least a portion of the second side of the receiving part 332 can serve as a channel wall for the fluid channel. Therefore, during the process of the first end of the movable member 31 pushing or moving away from the first side of the receiving part 332, both a portion and the entire movable member 31 are always in contact with the first side of the receiving part 332, and not with the second side. In this way, the fluid in the fluid channel can be isolated from the movable member 31, and the selective connection or closure of the fluid channel can be achieved by the first end of the movable member 31 acting on the first side of the receiving part 332.

[0087] In some embodiments, at least a portion of the isolating body 331, the receiving portion 332, and at least a portion of the bottom of the valve body together form a receiving space 202, which is spaced apart from the first channel opening 201. A movable member 31 is disposed in the receiving space 202. When the movable member 31 is activated by the force-bearing member 32, it can move within the receiving space 202 in a direction away from or towards the receiving portion 332, causing the receiving portion 332 to move or deform. That is, the first side of the receiving portion 332 is located within the receiving space 202, and the second side of the receiving portion 332 is located outside the receiving space 202. Therefore, when the movable member 31 moves within the receiving space 202, it still applies a force to the first side of the receiving portion 332 and does not come into contact with the second side of the receiving portion 332. This still allows the movable member 31 to be separated from the fluid in the fluid channel.

[0088] Therefore, when the force-receiving component 32 is subjected to a first external force or a second external force, the movable component 31 can move within the accommodating space 202 to push or move away from the first side of the receiving part 332, thereby causing the second side of the receiving part 332 to move or deform towards or away from the second channel opening 205, thereby blocking or opening the second channel opening 205. Furthermore, since the accommodating space 202 is spaced apart from the first channel opening 201, it is also located outside the fluid channel. In other words, the accommodating space 202, formed by at least a portion of the isolation body 331, the first side of the receiving part 332, and at least a portion of the bottom of the valve body, cannot come into contact with the liquid in the fluid channel or the liquid bag 300. This cuts off the possibility of the movable component 31 coming into contact with the liquid, achieving complete separation of the movable component 31 from the liquid. Simultaneously, the linkage between the movable component 31 and the force-receiving component 32 can also achieve the connection or closure of the fluid channel, effectively improving the utilization rate of the device. In other words, the movement of the moving part 31 and the force-bearing part 32 can be used to achieve at least partial deformation of the fluid channel, and the moving part 31 can be separated from the liquid phase in the fluid channel.

[0089] In some embodiments, the movable member 31 has an annular groove 301, for example, an annular groove 301 is provided at the first end of the movable member 31. A groove 332a is recessed on the first side of the receiving portion 332, and the opening of the groove 332a has a first protruding ring 332b. The first protruding ring 332b is embedded in the annular groove 301 so that the groove 332a encloses the first end of the movable member 31. That is, through the embedded structure of the annular groove 301 and the first protruding ring 332b, a snap-fit ​​structure can be formed between the first end of the movable member 31 and the second side of the receiving portion 332. During the movement of the movable member 31, the receiving portion 332 can move as a whole along with the first end of the movable member in a direction closer to or further away from the second channel opening 205, so as to selectively block or open the second channel opening 205. At this time, the first end of the movable member 31 is always enclosed in the groove 332a of the receiving portion 332, and when the force-bearing member 32 receives an external force, the entire receiving portion 332 will move with the first end of the movable member 31. Thus, the second side of the receiving portion 332 also moves accordingly.

[0090] It is understood that in some embodiments, the annular groove 301 of the movable member 31 may also be omitted. That is, when the movable member 31 leaves the first side of the receiving part 332, the first end of the movable member 31 may also partially or completely move out of the groove 332a of the receiving part 332. At this time, the second side of the receiving part 332 can be configured as a recessed structure. That is, when the second channel opening 205 is in the open state, there is a gap between the second side of the receiving part 332 and one end of the second channel opening 205, so that when the fluid in the fluid channel flows through the second side of the receiving part 332, it can enter the second channel opening 205 or the first channel opening 201 through the gap. The size of the gap can be designed according to the actual application, as long as it can ensure that the fluid can enter or exit in the fluid channel. When it is necessary to block the second channel opening 205, a sufficiently large first external force can be applied to press the second side of the receiving part 332 against the second channel opening 205. At this time, the size of the first external force can be set according to the size of the gap.

[0091] In some embodiments, the elastic element 34 can be sleeved on the movable element 31 and cooperate with the force-bearing element 32, which can not only separate the movable element 31 from the fluid phase, but also separate the elastic element 34 from the fluid phase. At the same time, it can also selectively block or open the second channel port 205. Optionally, the elastic element 34 can be a first elastic element or a second elastic element, as described below.

[0092] In some embodiments, the switch assembly includes a first elastic member sleeved on the movable member 31, the first elastic member having a first elastic force that is always applied to the movable member 31. When the force-receiving member 32 receives an external force, the first elastic member and the force-receiving member 32 jointly drive the movable member 31 to move toward the isolation body 331 to resist at least a portion of the isolation body 331. Alternatively, when the force-receiving member 32 receives an external force, the force-receiving member 32 overcomes the first elastic force, and the movable member 31 is linked under the action of the force-receiving member 32 to move away from the isolation body 331.

[0093] Specifically, the first elastic element can be a compression spring, in which case the direction of the first elastic force is the same as the direction of the first external force. At this time, the first elastic force applied to the movable element 31 can, to a certain extent, drive the first end of the movable element 31 to move towards the first side closer to the receiving portion 332, thereby also pushing the second side of the receiving portion 332. If the first elastic force is large at this time, a small first external force can be applied to make the second side of the receiving portion 332 press against the second channel opening 205. Alternatively, in some embodiments, it is not necessary to apply an additional first external force; the first elastic force alone is sufficient to make the first end of the movable element 31 abut against the first side of the receiving portion 332, so that the second side of the receiving portion 332 presses against the second channel opening 205. At this time, the first elastic force can act as the first external force, causing the second channel opening 205 to be in a closed state. That is to say, the first elastic force and the first external force can both drive the first end of the movable element 31 to move towards the receiving portion 332 to abut against the first side of the receiving portion 332, thereby pressing against the second channel opening 205. The first elastic force can also drive the first end of the movable member 31 to move toward the receiving part 332 to abut against the first side of the receiving part 332.

[0094] When it is necessary to drive the first end of the movable member 31 away from the first side of the receiving part 332, the second external force applied to the force-bearing member 32 not only needs to overcome the first elastic force, but also needs to drive the first end of the movable member 31 to move away from the first side of the receiving part 332, or drive the first end of the movable member 31 and the receiving part 332 to move away from the second channel opening 205 as a whole, so as to open the second channel opening 205.

[0095] It is understandable that the first elastic element is fitted onto the movable element 31, and both are located outside the liquid channel. Therefore, neither of them will come into contact with the liquid in the liquid channel. The first elastic element used in the reagent kit 220 is usually made of metal. If the first elastic element is located inside the liquid bag 300, or if the first elastic element comes into contact with the liquid in the liquid channel, it will also cause the first elastic element to react with the liquid. Therefore, when the switch assembly of the reagent kit 220 is equipped with a first elastic element, it is also necessary to separate the first elastic element from the liquid. Precisely considering that the first elastic element will react with the liquid, fitting the first elastic element onto the movable element 31 and placing it outside the liquid channel, as well as having the first elastic element and the movable element 31 move together in the accommodating space 202, can both achieve the separation of the first elastic element and the movable element 31 from the liquid.

[0096] Furthermore, when the first valve assembly is in a non-operating state, since the first elastic member always provides the moving member 31 with a first elastic force in the same direction as the first external force, the second side of the receiving part 332 presses against the second channel opening 205, forming a sealing structure. Therefore, the possibility of a cavity forming between the liquid bag 300 and the liquid path in the fluid channel during the sealing process can be reduced. In this way, the volume change during the activation of the first valve assembly can be reduced, thus minimizing the change in air pressure within the liquid path and facilitating bubble control.

[0097] In some embodiments, the switch assembly includes: a second elastic member sleeved on the movable member 31, the second elastic member having a second elastic force that is always applied to the movable member 31; when the force-receiving member 32 receives an external force, the second elastic member and the force-receiving member 32 jointly drive the movable member 31 to move away from the isolation body 331; or when the force-receiving member 32 receives an external force, the force-receiving member 32 is used to overcome the second elastic force, and the movable member 31 is linked under the action of the force-receiving member 32 so that the movable member 31 moves towards the isolation body 331 to abut against at least a portion of the isolation body 331.

[0098] Specifically, the second elastic element can be a tension spring, in which case the direction of the second elastic force is the same as the direction of the second external force. At this time, the second elastic force applied to the movable member 31 can, to a certain extent, drive the first end of the movable member 31 to move away from the first side of the receiving portion 332, thereby also moving away from the second side of the receiving portion 332, so that the second channel opening 205 opens. If the second elastic force is large at this time, a smaller second external force can be applied to open the second channel opening 205. Alternatively, in some embodiments, no additional second external force is required; the second elastic force alone is sufficient to move the first end of the movable member 31 away from the first side of the receiving portion 332, thus opening the second channel opening 205. In this case, the second elastic force can act as the second external force, causing the second channel opening 205 to be in an open state. That is, the second elastic force can both drive the first end of the movable member 31 to move away from the receiving portion 332 in conjunction with the second external force, moving away from the first side of the receiving portion 332. The first elastic force can also drive the first end of the movable member 31 to move closer to the receiving portion 332 alone, to abut against the first side of the receiving portion 332.

[0099] When it is necessary to drive the first end of the movable member 31 to approach the first side of the receiving part 332 to press the first channel opening 201, the second external force applied to the force-bearing member 32 not only needs to overcome the second elastic force, but also needs to drive the first end of the movable member 31 to move towards the first side of the receiving part 332, or drive the first end of the movable member 31 and the snap-fit ​​structure formed by the receiving part 332 to approach the second channel opening 205, so that the second side of the receiving part 332 presses the second channel opening 205 to close the second channel opening 205.

[0100] Similar to the structure in which the first elastic element is fitted onto the movable element 31, the reagent kit 220 structure provided in this application can also separate either the second elastic element or the movable element 31 from the liquid phase. For details, please refer to the relevant description of the first elastic element.

[0101] Therefore, in the structure of the reagent kit 220 provided in this application embodiment, on the one hand, the movable member 31 can be separated from the liquid in the fluid channel or the liquid phase in the liquid bag 300, reducing the possibility of the movable member 31 reacting with the liquid upon contact. On the other hand, when the switch assembly is also provided with an elastic member, such as a first elastic member or a second elastic member, the first elastic member or the second elastic member is sleeved on the movable member 31. In this way, while separating the movable member 31 from the liquid in the fluid channel or the liquid phase in the liquid bag 300, the first elastic member or the second elastic member can also be separated from the liquid in the fluid channel or the liquid bag 300, reducing the possibility of either the movable member 31 or the elastic member 34 reacting with the liquid upon contact.

[0102] In some embodiments, the isolator 33 further includes a protrusion 333. The protrusion 333 is disposed on the side of the isolator body 331 facing the first channel opening 201, and the other end of the first channel opening 201 extends to the second channel opening 205 via the protrusion 333. That is, the inner side of the protrusion 333 can constitute a portion of the fluid channel. Therefore, the fluid channel formed between the first channel opening 201 and the second channel opening 205 can at least include the first channel opening 201, the inner side of the protrusion 333, the second side of the receiving portion 332, and the second channel opening 205.

[0103] In some embodiments, the protrusion 333 has a first through hole 333a, one end of which is connected to the other end of the first channel opening 201, and the other end of which is connected to the second channel opening 205.

[0104] In some embodiments, the radial dimension of the first through hole 333a is equal to or greater than the radial dimension of the first channel opening 201. It is understood that the radial dimensions of the first through hole 333a and the second channel opening 205 can be designed according to actual application requirements; their radial dimensions can be equal, or one can be larger than the other. This application does not impose specific limitations, as long as the liquid can be input or output in the fluid channel.

[0105] In some embodiments, the switch assembly further includes a transmission member 35, sleeved on the movable member 31 and abutting against the force-receiving member 32. The transmission member 35 is configured to move together with the movable member 31 within the accommodating space 202 when the force-receiving member 32 receives an external force, thereby driving the movable member 31 to move away from or towards the receiving portion 332. Specifically, when the force-receiving member 32 receives a first external force, the transmission member 35 drives the movable member 31 to move towards a first side closer to the receiving portion 332 until it abuts against the first side of the receiving portion 332, so that the second side of the receiving portion 332 presses against the second channel opening 205. When the force-receiving member 32 receives a second external force, the transmission member 35 drives the movable member 31 to move away from the first side of the receiving portion 332 until it leaves the first side of the receiving portion 332, so that the second side of the receiving portion 332 no longer presses against the second channel opening 205. At this time, the second channel opening 205 is in an open state.

[0106] Specifically, the transmission component 35 is roughly fitted onto the movable component 31 near its first end. Positioning the transmission component 35 near the first end of the movable component 31 serves two purposes: firstly, to reduce the internal space occupied by the valve body; and secondly, to prevent the distance between the force-bearing component 32 and the transmission component 35 from being too large. If the distance is too large, a larger first or second external force is required for the transmission component 35 to drive the movable component 31 to move together within the accommodating space 202.

[0107] In some embodiments, the connection between the transmission member 35 and the force-receiving member 32 can be either indirect or direct. A direct connection may involve the transmission member 35 being fixedly connected to the force-receiving member 32 with screws. In this case, the transmission member 35 and the force-receiving member 32 can also be used together as the force-receiving member 32, with the transmission member 35 serving as the transmission part of the force-receiving member 32. An indirect connection may involve the end of the force-receiving member 32 abutting against the transmission member 35, and when the force-receiving member 32 is subjected to an external force, the transmission member 35 can drive the movable member 31 to move within the accommodating space 202. The force-receiving member 32 can also be connected to the transmission member 35 via magnetic attraction. The connection method is not specifically limited, as long as the transmission member 35 and the movable member 31 can form a linkage when the force-receiving member 32 is subjected to an external force.

[0108] In some embodiments, a second protruding ring 311 is provided around the periphery of the movable member 31, and a transmission member 35 is disposed on the side of the second protruding ring 311 facing the second channel opening 205. The side of the second protruding ring 311 facing the second channel opening 205 is defined as the first side of the second protruding ring 311. That is, the range of motion of the transmission member 35 within the accommodating space 202 includes the range between the first side of the second protruding ring 311 and the first end of the movable member 31.

[0109] In some embodiments, the force-receiving member 32 has a protrusion 321, which is located on the side of the force-receiving member 32 facing the transmission member 35. The end of the protrusion 321 abuts against the transmission member 35. When the force-receiving member 32 receives an external force, the force-receiving member 32 drives the transmission member 35 to move within the active space through the protrusion 321.

[0110] In some embodiments, there are two protrusions 321, which are located on the same side of the force-receiving member 32 and on both sides of the center point of the force-receiving member 32. That is, the two protrusions 321 can be arranged diagonally along the center point of the force-receiving member 32. This allows the accommodating space 202 for the movement of the transmission member 35 and the movable member 31 to be offset from the first channel opening 201.

[0111] In some embodiments, the two protrusions 321 are offset from the first channel opening 201 to avoid the first channel opening 201. That is, the accommodating space 202 is offset from the first channel opening 201 to avoid interference with the first channel opening 201 and / or the protrusion 333 of the isolating member 33 when the transmission member 35 and the movable member 31 move together in the accommodating space 202.

[0112] In some embodiments, the valve body assembly further includes a support 23, at least partially located between the isolator 33 and the bottom of the valve body. The support 23 at least covers the area of ​​the isolated body 331 corresponding to the fluid passage. When the isolator 33 is a flexible element, placing the support 23 between the isolator 33 and the bottom of the valve body can provide some support for the isolator 33.

[0113] Optionally, the support member 23 can be made of a rigid material, such as rubber.

[0114] In some embodiments, the support member 23 has a first mounting hole 231 and a second mounting hole 233. The first mounting hole 231 is correspondingly provided with the first channel opening 201, and the second mounting hole 233 is correspondingly provided with the movable member 31. The support member 23 is sleeved on the body of the isolator 33 through the first mounting hole 231 and the second mounting hole 233. That is, the support member 23 allows the movable member 31 to pass through and is located between the bottom of the valve body and the isolator 33.

[0115] In some embodiments, the valve body assembly further includes a bracket 25 disposed within the valve body and covering the bottom of the valve body. That is, the bracket 25 can extend across the bottom of the valve body 21, and the spacer 33 can be disposed between the bracket 25 and the bottom of the valve body 21. Further, a second channel opening 205 is formed on one side of the bottom of the bracket 25.

[0116] In some embodiments, an annular groove 251 is formed on one side of the bottom of the bracket 25, and the annular groove 251 surrounds the second channel opening 205. That is, the center of the annular groove 251 may coincide with the center of the second channel opening 205, and their cross-sectional shapes are concentric circles. The receiving portion 332 is at least partially accommodated in the annular groove 251. That is, the second side of the receiving portion 332 may cover the second channel opening 205, and the portion outside the second channel opening 205 may be accommodated in the annular groove 251. Specifically, the outer periphery of the second channel opening 205 protrudes from the bottom of the annular groove 251. That is, a protrusion 252 may be formed on the outer periphery of the second channel opening 205 within the annular groove 251. By providing a protrusion 252 on the outer peripheral edge of the second channel opening 205, when the receiving part 332 presses the second channel opening 205 against the second side, it can be ensured that the edge of the second channel opening 205 is pressed against the second side of the receiving part 332, thereby ensuring that the second channel opening 205 is in a closed state, and at the same time, the sealing between the second channel opening 205 and the second side of the receiving part 332 can be improved.

[0117] In some embodiments, the bracket 25 has a first receiving groove 253 on the side opposite to the movable member 31, a portion of the force-bearing member 32 is received in the first receiving groove 253, another portion of the force-bearing member 32 passes through the bracket 25 to abut against the transmission member 35, and a second channel opening 205 is located at the bottom of the first receiving groove 253.

[0118] In some embodiments, the bottom of the first receiving groove 253 is recessed to form a second receiving groove 255, the second channel opening 205 is located at the bottom of the second receiving groove 255, a connector 27 is embedded in the second receiving groove 255, the connector 27 is provided with a second through hole 207, one end of the second through hole 207 is connected to the other end of the second channel opening 205, and the other end of the second through hole 207 is used for inputting or outputting fluid.

[0119] In some embodiments, the top of the force-bearing member 32 has a third through hole 320, and the adapter of the reagent kit 220 is inserted into the third through hole 320, the second through hole 207 and the second channel opening 205 for connection. The adapter can be a steel needle.

[0120] In some embodiments, the linkage between the force-receiving member 32 and the moving member 31 includes a magnetic attraction method or a mechanical transmission method. For example, the magnetic attraction method can be the magnetic attraction method of an electromagnet.

[0121] In the structural design of the reagent kit 220 provided in this application embodiment, on the one hand, by placing the movable member 31 and the force-receiving member 32 outside the fluid channel, the liquid in the fluid channel will not come into contact with the movable member 31 during the liquid output or input process of the fluid channel, thereby reducing the possibility of reaction between the liquid in the fluid channel and the movable member 31. This reduces the impact on the liquid composition in the fluid channel caused by the movable member 31 being located inside the liquid bag 300 or by the movable member 31 coming into contact with the fluid in the fluid channel, thereby reducing the impact on the liquid's performance and ensuring, to a certain extent, that the device's performance is not affected. On the other hand, the linkage between the movable member 31 and the force-receiving member 32 allows for selective closure or connection of the fluid channel. In other words, when the force-receiving member 32 moves under external force, it simultaneously drives the movable member 31 to deform at least part of the fluid channel, selectively blocking or opening the second channel opening 205, thereby achieving selective closure or connection of the fluid channel. For example, when the valve body assembly is in the working state, an external force can be applied to cause the force-receiving member 32 and the moving member 31 to engage in a linkage, causing at least a portion of the fluid passage to deform, and simultaneously causing the second passage port 205 to open, that is, the fluid passage is in a connected state. When the valve body assembly is in the non-working state, an external force can be applied to cause the force-receiving member 32 and the moving member 31 to engage in a linkage, causing at least a portion of the fluid passage to deform, and simultaneously causing the second passage port 205 to close, that is, the fluid passage is in a closed state.

[0122] Furthermore, since the movable part 31 is located outside the fluid channel, it is directly isolated from the fluid. Therefore, whether it is an output or input fluid, the movable part 31 will not come into contact with the fluid in the fluid channel, thereby reducing the possibility of a reaction between the movable part 31 and the fluid in the fluid channel. The non-operating state of the first valve assembly may include the production process and transportation process of the liquid bag 300. At this time, the fluid channel is closed, so the movable part 31 will not come into contact with the liquid in the liquid bag 300. That is to say, during the production, transportation and use of the liquid bag 300, the movable part 31 will not come into contact with the liquid inside the liquid bag 300 and chemically react, reducing the possibility of the movable part 31 reacting with the reagent, thereby reducing the impact on equipment performance.

[0123] 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 valve body assembly arranged in the box body and provided with a first channel port and a second channel port, the first channel port being used for connecting with the liquid bag, the second channel port being used for inputting or outputting fluid, and a fluid channel being formed between the first channel port and the second channel port; 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 movable member and the force receiving member being located outside the fluid channel, the force receiving member being used for receiving external force to move, the movable member being linked and matched under the action of the force receiving member, at least part of the fluid channel being deformed under the action of the movable member, so as to close or connect the fluid channel.

2. The kit of claim 1, wherein The valve body assembly comprises a separation member, at least part of the separation member serving as a channel wall of the fluid channel, at least part of the separation member being able to move or deform under the action of the movable member linked and matched by the force receiving member, so as to block or open one end of the second channel port.

3. The kit of claim 2, wherein The valve body assembly comprises a valve body, one side of the bottom of the valve body forming the first channel port, one end of the first channel port being used for abutting against the liquid bag, and the other end of the first channel port leading to the second channel port through the separation member.

4. The kit of claim 3, wherein The separation member comprises a separation main body, the separation main body being arranged adjacent to the second channel port; the separation main body being provided with a receiving portion on one side facing the second channel port, at least part of one end of the movable member facing the second channel port being able to push or move away from one side of the receiving portion facing away from the second channel port, so as to move the receiving portion to block or open the second channel port.

5. The kit of claim 4, wherein At least part of the separation main body, the receiving portion and at least part of the bottom of the valve body jointly form a containing space, the containing space being spaced apart from the first channel port; the movable member being arranged in the containing space, the movable member being able to move in the containing space in a direction away from or close to the receiving portion under the action of the movable member linked and matched by the force receiving member, so as to move or deform the receiving portion.

6. The kit of claim 5, wherein The movable member has a ring groove, one side of the receiving portion facing away from the second channel port is recessed to form a recess, an opening of the recess has a first convex ring, and the first convex ring is embedded in the ring groove, so that the recess wraps one end of the movable member.

7. The kit of claim 5, wherein The switch assembly comprises a first elastic member sleeved on the movable member, the first elastic member having a first elastic force always applied to the movable member; when the force receiving member receives external force, the first elastic member and the force receiving member jointly drive the movable member to move in a direction close to the separation main body, so as to abut against at least part of the separation main body; or when the force receiving member receives external force, the force receiving member is used for overcoming the first elastic force, the movable member is linked and matched under the action of the force receiving member, so that the movable member moves in a direction away from the separation main body.

8. The kit of claim 5, wherein The switch assembly comprises a second elastic member sleeved on the movable member, the second elastic member having a second elastic force always applied to the movable member. When the force receiving member receives external force, the second elastic member and the force receiving member jointly drive the movable member to move away from the isolation main body; or When the force receiving member receives external force, the force receiving member is used to overcome the second elastic force, and the movable member is linked to move in the direction of approaching the isolation main body under the action of the force receiving member, so as to resist at least part of the isolation main body.

9. The kit according to any one of claims 5-8, characterized in that, The isolation member comprises a protruding part arranged on one side of the isolation main body facing the first passage opening, and the other end of the first passage opening is connected to the second passage opening through the protruding part.

10. The kit of claim 9, wherein The protruding part has a first through hole, one end of the first through hole is communicated with the other end of the first passage opening, and the other end of the first through hole is connected to the second passage opening.

11. The kit of any one of claims 5-8, wherein, The switch assembly comprises a transmission member sleeved on the movable member and abutting against the force receiving member, and the transmission member is used to jointly move with the movable member in the accommodation space when the force receiving member receives external force, so as to drive the movable member to move away from or close to the receiving part.

12. The kit of claim 11, wherein The force receiving member has a protruding column arranged on one side of the force receiving member facing the transmission member, and the end of the protruding column abuts against the transmission member, and the force receiving member drives the transmission member to move in the movable space through the protruding column when the force receiving member receives external force.

13. The kit of claim 12, wherein The number of the protruding columns is two, and the two protruding columns are arranged on the same side of the force receiving member and located on both sides of the center point of the force receiving member.

14. The kit of claim 13, wherein The two protruding columns are arranged in a staggered manner to avoid the first passage opening.

15. The kit according to any one of claims 5 to 8, characterized in that, The valve body assembly comprises a support member located at least partially between the isolation member and the valve body bottom, and the support member covers at least the area of the isolation main body corresponding to the fluid passage.

16. The kit of claim 15, wherein The support member has a first mounting hole and a second mounting hole, the first mounting hole is arranged corresponding to the first passage opening, and the second mounting hole is arranged corresponding to the movable member, and the support member is sleeved on the isolation member main body through the first mounting hole and the second mounting hole.

17. The kit of claim 11, wherein The valve body assembly further comprises a bracket arranged in the valve body and covering the valve body bottom. One side of the bracket bottom forms the second passage opening.

18. The kit of claim 17, wherein One side of the bracket bottom forms an annular groove surrounding the second passage opening, and the receiving part is at least partially accommodated in the annular groove.

19. The kit of claim 17, wherein The side of the bracket opposite to the movable member has a first accommodation groove, a part of the force receiving member is accommodated in the first accommodation groove, and the other part of the force receiving member passes through the bracket to abut against the transmission member, and the second passage opening is located at the bottom of the first accommodation groove.

20. The kit of claim 19, wherein The bottom of the first accommodation groove is recessed to form a second accommodation groove, the second passage opening is located at the bottom of the second accommodation groove, a connecting member is embedded in the second accommodation groove, the connecting member has a second through hole, one end of the second through hole is communicated with the other end of the second passage opening, and the other end of the second through hole is used for inputting or outputting fluid.

21. The kit of claim 20, wherein, The force receiving member has a third through hole, and the adapter pipe of the kit is inserted into the third through hole and connected with the second through hole and the second channel port.

22. The kit of any one of claims 5-8, wherein, The isolation member is a flexible member.

23. The kit of claim 11, wherein The movable member is provided with a second convex ring on the side thereof, and the transmission member is arranged on the side of the second convex ring facing the second channel port.

24. The kit of any one of claims 5-8, wherein, The linkage between the force receiving member and the movable member includes magnetic attraction or mechanical transmission.

25. A blood gas analyzer comprising: The device body comprises: a device body; a kit connected with the device body of the blood gas analyzer; The kit comprises: a box body provided with a containing cavity, and a liquid bag arranged in the containing cavity; a first valve body assembly arranged in the box body and provided with a first channel port and a second channel port, the first channel port being used for connecting with the liquid bag, the second channel port being used for inputting or outputting fluid, and a fluid channel being formed between the first channel port and the second channel port; 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 movable member and the force receiving member being arranged outside the fluid channel, the force receiving member being used for being moved by external force, the movable member being linked and matched under the action of the force receiving member, and at least part of the fluid channel being deformed, so as to make the fluid channel closed or communicated.

26. The blood gas analyzer of claim 25, wherein, The kit further comprises a first liquid delivery path arranged in the box body, and the second channel port is communicated with the first liquid delivery path to input reagent into the test card of the blood gas analyzer.

27. The blood gas analyzer of claim 25, wherein, The liquid bag comprises a reagent liquid bag or a cleaning liquid bag. The kit further comprises a second valve body assembly and a second liquid delivery path connected with each other, the second liquid delivery path being arranged in the box body, and the cleaning liquid bag inputting cleaning liquid into the connecting groove of the kit through the second valve body assembly and the second liquid delivery path.

28. The blood gas analyzer of claim 25, wherein, The kit further comprises a third valve body assembly and a gas channel connected with each other, the gas channel being arranged in the box body, and the kit being communicated with the outside space through the third valve body assembly and the gas channel, and the third valve body assembly being connected with the second channel port.

29. The blood gas analyzer of claim 25, wherein, The device body is not provided with a liquid path.

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