Novel concentration analyzer and connecting structure thereof

Abstract

The invention relates to the technical field of blood detection equipment, and discloses a novel concentration analyzer and a connecting structure thereof.The novel concentration analyzer comprises a protective shell, a liquid inlet is formed in the rear side of the protective shell, a liquid outlet is formed in one side of the liquid inlet, the liquid outlet is formed in the rear side of the protective shell, and the liquid inlet is connected with a detection cavity through a pipeline; the detection cavity is connected with a liquid outlet through a pipeline, a negative pressure pump is arranged in the detection cavity, and a sensor array is arranged in the detection cavity; the PLC module is installed in the protective shell and used for controlling cooperation between the modules and data transmission; the valve control module is installed in the protective shell and used for controlling opening and closing of the three-way valve and the pipeline switching state. By regularly extracting blood for concentration analysis, the drug dosage is adjusted in real time according to data, drug poisoning caused by continuous pump injection is avoided, blood concentration detection is automatically performed by setting different time intervals, the medication safety is ensured, and the treatment accuracy and efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of blood testing equipment, in particular to a novel concentration analyzer and a connection structure thereof. Background Art

[0002] In the medical field, especially in drug treatment, some drugs such as lidocaine, theophylline, digoxin, etc. have the characteristics of low therapeutic index and narrow safety range. If the dosage is not properly controlled, it may lead to drug poisoning or even life-threatening. Such drugs are particularly important in the management of high-risk patients. It is usually necessary to adjust the drug dosage by continuously monitoring the blood drug concentration to ensure the treatment effect and safety.

[0003] However, existing blood drug concentration monitoring technologies generally have problems such as poor real-time performance, complex operation, and inconvenient maintenance. Especially when blood collection is frequently required, it is difficult for the equipment to achieve continuous and accurate monitoring, which easily causes inconvenience in operation and waste of blood.

[0004] In addition, during the continuous blood drug concentration monitoring process, especially for drug management of high-risk patients, the existing equipment has a relatively complex pipeline design and blood return function, and cannot automatically keep the pipeline clean. This not only increases the workload of medical staff, but may also lead to inaccurate data, which in turn affects the diagnosis and treatment decisions for patients. The pipeline maintenance of traditional equipment requires frequent disassembly and cleaning, which also affects the overall service life and reliability of the equipment.

[0005] In addition, existing equipment connection structures generally lack convenient disassembly and assembly designs, and loose connections may cause liquid leakage, affecting the safety and operational efficiency of the equipment. Therefore, in actual use, the connection, disassembly and maintenance efficiency of the equipment is low, which increases the complexity of operation and the maintenance cost of the equipment, affecting the application and promotion of the equipment in clinical practice. Summary of the invention

[0006] In view of the deficiencies of the prior art, the present invention provides a novel concentration analyzer and a connection structure thereof, which solves the problem that the continuity and accuracy of monitoring will decrease when the device cannot perform frequent blood sampling.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A new type of concentration analyzer, comprising:

[0008] A protective shell, a liquid inlet is arranged at the rear side thereof, a plurality of liquid outlets are arranged on one side of the liquid inlet, the liquid outlets are arranged at the rear side of the protective shell, the liquid inlet is connected to the detection cavity through a pipeline, the detection cavity is connected to the liquid outlet through a pipeline, a negative pressure pump is arranged inside the detection cavity, and a sensor array is arranged inside the detection cavity;

[0009] PLC module, which is installed inside the protective shell and is used for coordination between control modules and data transmission;

[0010] The valve control module is installed inside the protective shell and is used to control the opening and closing of the three-way valve and the switching state of the pipeline;

[0011] A detection module is installed inside the protective shell and is used for electrically connecting the detection module to the sensor array;

[0012] An inlet and outlet liquid control module is installed inside the protective shell and is used to adjust the flow direction of the liquid entering the detection cavity, including the entry of blood and the entry of cleaning liquid;

[0013] A blood drawing mechanism, which is mounted on the protective shell through a liquid inlet and is used to draw blood from an artery in a patient's hand;

[0014] The waste liquid storage mechanism is installed on the protective shell through the liquid outlet and is used for storing blood after testing and liquid after flushing.

[0015] Preferably, the blood drawing mechanism comprises a connector, which is mounted on the protective shell through a liquid inlet, a delivery tube 1 is fixed to one end of the connector away from the liquid inlet, and a three-way valve is installed at one end of the delivery tube 1.

[0016] Preferably, a delivery tube 2 is installed at one end of the three-way valve away from the delivery tube 1, a puncture head is fixed to one end of the delivery tube 2 away from the three-way valve, and the delivery tube 2 is divided into two sections, and a medical tee is arranged between them.

[0017] Preferably, a delivery pipe 3 is installed at the middle port of the three-way valve, and a saline bottle is installed at one end of the delivery pipe 3 away from the three-way valve.

[0018] Preferably, the waste liquid storage mechanism includes a plurality of support frames, each of which is mounted on the rear side of the protective shell and wraps the liquid outlet, and a waste liquid bottle is mounted at one end of the liquid outlet, and the waste liquid bottle passes through the support frame and extends to the interior.

[0019] Preferably, the PLC module includes a central processing unit, a memory, a connection unit and a communication unit;

[0020] The central processing unit is the core of the PLC module and is used to process and execute instructions;

[0021] The memory is used to store the logic program and data of the system operation, and record the device status and operation process;

[0022] The connection unit is used to connect with the detection module, the valve control module, and the inlet and outlet liquid control module to realize signal collection and control;

[0023] The communication unit is used to realize the communication between the PLC and external devices, and supports remote monitoring and data transmission.

[0024] Preferably, the valve control module includes a three-way valve control unit and a valve drive unit;

[0025] The three-way valve control unit is used to control the opening and closing state of the three-way valve;

[0026] The valve driving unit drives the three-way valve to switch through a motor or a solenoid valve to ensure that the fluid flows in a set direction.

[0027] Preferably, the inlet and outlet liquid control module includes a pressure regulating unit, a liquid flow control unit and a waste liquid discharge unit;

[0028] The pressure regulating unit adjusts the pressure of the liquid entering the device through a pressure sensor and a controller;

[0029] The liquid flow control unit is used to control the amount of blood entering the detection chamber and the amount of waste liquid discharged;

[0030] The waste liquid discharge unit is used to control the waste liquid to flow into the waste liquid storage mechanism through the pipeline, and realizes the automatic discharge of the waste liquid through a pump or a valve.

[0031] Preferably, a connection structure includes a docking ring, which is fixed on the side of the connecting head close to the liquid inlet, and the docking ring is embedded in the liquid inlet. A sealing rubber ring is fixed on the inner wall of the docking ring, and the sealing rubber ring is fitted between the liquid inlet. The docking ring is provided with locking components distributed in a ring array.

[0032] Preferably, the locking assembly includes a fixing column, the fixing column is fixed inside the docking ring, the outer wall of the fixing column is sleeved with a spring, one end of the spring is fixed inside the connecting head, the other end of the spring is fixed with a slider, a ball bearing is provided on the side of the slider away from the spring, a limiting block is fixed on the outer wall of the slider, a fixing rod is fixed inside the docking ring, the limiting block slides through the fixing rod, and a magnetic block is fixed on the outer wall of the fixing rod, and the magnetic block and the limiting block are magnetically attracted to each other.

[0033] Working principle: When the patient is anesthetized, the puncture head is inserted into the patient's artery through the delivery tube 2. At this time, the PLC module starts the operation of the entire equipment. First, it controls the negative pressure pump to generate negative pressure. Under the action of negative pressure, the arterial blood enters the three-way valve through the delivery tube 2, and then is transported to the liquid inlet through the delivery tube 1, and finally enters the detection chamber. After entering the detection chamber, the blood is electrically connected to the sensor array by the internal detection module to monitor the blood drug concentration in real time. The PLC module can automatically start the detection module to perform a blood test according to the set time interval, such as once every 1 minute, to ensure that the blood concentration data is accurately obtained during the continuous monitoring process. After the test is completed, the negative pressure pump is controlled to open and close through the PLC module, which controls the negative pressure When the pump is reflux pressurizing, the blood in the detection cavity together with the delivery tube 1 and the delivery tube 2 will flow back into the patient's body through the puncture head. Then the PLC module controls the valve control module to drive the three-way valve to change the flow path and switch to the cleaning mode. The negative pressure pump continues to run to re-deliver the residual blood in the delivery tubes 1 and 2 back to the patient's body to prevent waste. At the same time, after the three-way valve is switched, the PLC module controls the saline solution in the saline bottle to enter the delivery tube 1 through the delivery tube 3, and then enter the detection cavity to comprehensively clean the detection cavity and the pipeline. The mixed liquid after cleaning is discharged into the waste liquid bottle through the liquid outlet by the negative pressure pump to store the waste liquid, so as to achieve the safe discharge of the waste liquid. Then, the PLC module controls the three-way valve to switch again to make the saline solution The blood flows into the puncture head through the delivery tube 2 to clean the residual blood in the pipeline and the puncture head, ensuring the cleanliness of the pipeline and the normal use of the equipment. Before drawing blood for testing again, it is necessary to pre-draw some blood. This part of blood is not used for testing, but is used to take the delivery tubes 1 and 2 together with the residual saline in the detection chamber away from the equipment for monitoring. The blood with a small amount of saline will finally be transported to two waste liquid bottles, and there is no waste liquid bottle for storing flushing liquid. After the test is completed, the outlet valve at the waste liquid bottle where the non-flushing liquid is stored will be opened, and then it will flow back into the patient's body together with the test blood in the detection chamber under the action of the negative pressure pump. During the entire operation of the equipment, the PLC module serves as the core control unit to coordinate all components It uses stored program logic to accurately control the start and stop of the negative pressure pump, the opening and closing of the three-way valve, the scheduling of blood and cleaning fluid by the inlet and outlet liquid control module, and the timed start and data collection of the detection module. The various pathways and cleaning processes of the equipment are automatically adjusted by the PLC module to ensure that the equipment can remain clean during continuous monitoring and perform multiple blood tests at set time intervals, thereby achieving accurate and continuous monitoring of blood drug concentrations. At the same time, the PLC module supports remote monitoring and data transmission, which is convenient for doctors and operators to track and adjust the status of the equipment in real time, further improving the intelligence and automation level of the system. When convenient movement is required, it can be moved through the recessed grippers on both sides of the protective shell.The pipe connected to the corresponding connector position can be pulled manually and vigorously, so that the docking ring is separated from the liquid inlet. At this time, the sealing rubber ring is no longer in contact with the liquid inlet and is separated and no longer sealed. When the docking ring is separated, the ball will be acted upon by force, thereby exerting an extrusion force on the spring, so that the space occupied by the spring will be compressed. At the same time, when it hits the fixed column, the ball is just immersed in the docking ring, which does not affect the separation. At the same time, the limit block will slide along the fixed rod and will no longer be magnetically attracted to the magnetic block. During installation, the ball will be squeezed by force before the docking ring is connected to the liquid inlet, but when the docking ring reaches the connection position, the ball is aligned with the reserved groove in the liquid inlet. At this time, the spring will release the elastic potential energy through its own restorability, so that it pushes the slider to drive the limit block to slide on the fixed rod. At the same time, the limit block will be magnetically attracted to the magnetic block again, so that the ball is engaged in the corresponding groove under the double force.

[0034] The present invention provides a novel concentration analyzer and its connection structure, which has the following beneficial effects:

[0035] 1. The present invention draws blood regularly for concentration analysis and adjusts the drug dosage in real time according to the data to avoid drug poisoning caused by continuous pumping. In addition, the blood drug concentration is automatically tested at different time intervals to ensure the safety of medication, adjust the dosage in time, and improve the accuracy and efficiency of treatment.

[0036] 2. The present invention uses a two-way pipeline design connected to the artery to automatically complete the extraction, analysis and return of arterial blood without wasting extra blood. At the same time, the physiological saline cleaning function of the pipeline is realized through the three-way valve control to automatically keep the pipeline clean. The equipment automatically cleans the pipeline after each test to ensure stable system operation and data accuracy, greatly reducing the complexity of operation and improving the durability of the equipment and the safety of long-term use.

[0037] 3. The present invention adopts the interlocking design of the docking ring and the liquid inlet, and is provided with a sealing rubber ring and a locking assembly inside, so as to ensure the firm connection between the connector and the device and effectively prevent liquid leakage. At the same time, the spring and ball structure of the locking assembly ensure the safety and stability during operation and prevent the connection from loosening or falling off. More importantly, the connection structure supports quick disassembly and assembly, and the user can easily separate the connection parts when the device needs to be moved or maintained, which greatly reduces the complexity of operation and improves the convenience of use and maintenance efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A perspective view of the present invention;

[0039] Figure 2 It is a three-dimensional rear view of the present invention;

[0040] Figure 3 This is a distribution diagram of the internal structure of the protective shell of the present invention;

[0041] Figure 4 It is a schematic diagram of the connection structure of the present invention;

[0042] Figure 5 It is a schematic diagram of the internal structure of the docking ring of the present invention;

[0043] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0044] Figure 7 It is a schematic diagram of a PLC module of the present invention;

[0045] Figure 8 It is a schematic diagram of a valve control module of the present invention;

[0046] Fig. 9 It is a schematic diagram of the liquid inlet and outlet control module of the present invention;

[0047] Fig.10 It is a flow chart of the cleaning pipeline of the present invention.

[0048] Among them, 1. protective shell; 2. liquid inlet; 3. detection chamber; 4. negative pressure pump; 5. PLC module; 6. valve control module; 7. detection module; 8. liquid inlet and outlet control module; 9. liquid outlet; 10. support frame; 11. waste liquid bottle; 12. connector; 13. delivery tube one; 14. three-way valve; 15. delivery tube two; 16. puncture head; 17. delivery tube three; 18. saline bottle; 19. docking ring; 20. sealing rubber ring; 21. fixing column; 22. spring; 23. slider; 24. ball; 25. fixing rod; 26. limit block; 27. magnetic block; 28. insulation chamber. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] Embodiment 1:

[0051] Please refer to the attached Figure 1 -Attached Figure 3 , an embodiment of the present invention provides a new type of concentration analyzer, comprising:

[0052] A protective shell 1 is provided with a liquid inlet 2 at its rear side, a plurality of liquid outlets 9 are provided on one side of the liquid inlet 2, the liquid outlets 9 are provided at the rear side of the protective shell 1, the liquid inlet 2 is connected to a detection chamber 3 through a pipeline, the detection chamber 3 is connected to the liquid outlet 9 through a pipeline, a negative pressure pump 4 is provided inside the detection chamber 3, and a sensor array is provided inside the detection chamber 3;

[0053] A PLC module 5, which is installed inside the protective shell 1 and is used for coordination between control modules and data transmission;

[0054] The valve control module 6 is installed inside the protective shell 1 and is used to control the opening and closing of the three-way valve 14 and the switching state of the pipeline;

[0055] A detection module 7 is installed inside the protective shell 1 and is used for electrically connecting the detection module 7 to the sensor array;

[0056] The inlet and outlet liquid control module 8 is installed inside the protective shell 1 and is used to adjust the flow direction of the liquid entering the detection cavity 3, including the entry of blood and the entry of cleaning liquid;

[0057] A blood drawing mechanism, which is mounted on the protective shell 1 through the liquid inlet 2 and is used to draw blood from the artery of the patient's hand;

[0058] The waste liquid storage mechanism is installed on the protective shell 1 through the liquid outlet 9 and is used to store blood after testing and liquid after flushing.

[0059] Specifically, a liquid inlet 2 is provided on the rear side of the protective shell 1 for conveying blood or cleaning fluid to the inside of the device for processing. A liquid outlet 9 is also provided on one side of the liquid inlet 2. The liquid outlet 9 is also installed on the rear side of the protective shell 1, and is interconnected with the liquid inlet 2 and the detection chamber 3 to form a closed loop of liquid flow. The liquid inlet 2 is connected to the detection chamber 3 through a pipeline to ensure that blood can directly flow into the detection chamber 3 for subsequent detection operations. A negative pressure pump 4 is installed inside the detection chamber 3. The negative pressure pump 4 is often used in the medical puncture process in the medical blood drawing system, and uses an air bag or a negative pressure device to produce blood in the blood vessel. Negative pressure is generated, thereby prompting blood to enter the blood drawing device. In the 2020 issue of "Medical Engineering and Clinical Research", volume 35 titled "Application and Development of Negative Pressure Blood Drawing System in Arterial Puncture", negative pressure pumps are widely used in medical blood drawing equipment, especially in continuous monitoring and automatic blood collection. It plays an important role, so the negative pressure pump 4 is very suitable here. The negative pressure pump 4 controls the flow of liquid to ensure that the blood can smoothly enter the detection chamber 3 and be discharged after the detection is completed. The detection chamber 3 is also equipped with a sensor array for collecting blood parameters to ensure detection. The PLC module 5 is installed inside the protective shell 1 and is the core control unit of the device. It manages the operation of various parts of the device through preset programs, including starting the detection module 7, controlling the direction of liquid flow, and coordinating the cleaning process. The module can automatically control the operation of the device according to the set time interval, such as every few minutes, to ensure continuous monitoring during long-term operation. The valve control module 6 is also installed inside the protective shell 1 and is responsible for controlling the opening and closing of the three-way valve 14, thereby switching the flow path of blood and cleaning liquid, and controlling the blood drawing, blood transfusion and cleaning path of the device. Through the cooperation of the valve control module 6 and the negative pressure pump 4, the liquid flow process becomes more efficient and controllable; the detection module 7 is directly connected to the sensor array to collect and process the detection data in the blood. This module analyzes the blood concentration information obtained by the sensor and transmits the results to the PLC module 5 for further processing. At the same time, the inlet and outlet liquid control module 8 is responsible for adjusting the direction and pressure of the liquid flowing into the detection chamber 3, including the input of blood and the injection of cleaning liquid, to ensure that the detection chamber 3 can be thoroughly cleaned after each use;The blood drawing mechanism is connected to the protective shell 1 through the liquid inlet 2, and is mainly used to draw blood from the patient's artery. The blood is transported to the detection chamber 3 for detection. After the detection is completed, it returns to the detection chamber 3, which is set as a sterile environment. Regarding the consideration of the sterile environment, compared with the US patent application 20200057086, it describes an automated sample collection and testing device, which includes a sample processing module that can perform optical measurements in the fluid path to ensure the sterility of the detection process, so as to ensure that the sterility of the internal environment required for continuous monitoring in the present invention can be guaranteed. In this way, the blood detected in the detection chamber 3 can also be refluxed through the negative pressure pump 4, and the uncontaminated blood is synchronously transported back to the patient's body through the transported passage to prevent multiple blood draws and tests. Patients cannot adapt, so keeping the blood reflux can ensure the number and frequency of detection. In terms of continuous blood extraction and detection, although a handheld optical fluid blood analyzer is disclosed in the 2023 issue of Optoelectronics Science, it can be very portable, but it still cannot achieve the effect of continuous monitoring. ;

[0060] Please see attached Figure 1 -Attached Figure 2 The blood drawing mechanism includes a connector 12, which is installed on the protective shell 1 through the liquid inlet 2. A delivery tube 13 is fixed to the end of the connector 12 away from the liquid inlet 2, a three-way valve 14 is installed at one end of the delivery tube 13, a delivery tube 2 15 is installed at the end of the three-way valve 14 away from the delivery tube 1 13, a puncture head 16 is fixed to the end of the delivery tube 2 15 away from the three-way valve 14, the delivery tube 2 15 is divided into two sections, and a medical three-way is arranged between them, a delivery tube 3 17 is installed at the middle port of the three-way valve 14, and a saline bottle 18 is installed at the end of the delivery tube 3 17 away from the three-way valve 14.

[0061] Specifically, the blood drawing mechanism includes a connector 12, which is fixedly mounted on the protective shell 1 through the liquid inlet 2, and serves to connect the external blood drawing device with the fluid processing system inside the equipment. The other end of the connector 12 is connected to the delivery tube 13, and the delivery tube 13 is responsible for introducing the blood from the connector 12 into the liquid passage inside the system. A three-way valve 14 is installed at one end of the delivery tube 13. The three-way valve 14 is a flow path switching device for the entire system. It was mentioned in Volume 42 of "Fluid Control and Application" published in 2021 that each port can be independently closed or switched to form a new circuit, so that the flow path of the blood and the cleaning fluid can be controlled. The other end of the three-way valve 14 is connected to the delivery tube 2 15, and the end of the delivery tube 2 15 is fixed with a puncture head 16, which is used to directly pierce the patient's artery for blood drawing to ensure that the blood can smoothly enter the equipment for testing. Through the delivery tube 2 15, the arterial blood first flows into the three-way valve 14, and then enters the detection cavity 3 through the delivery tube 13;In addition, the interface in the middle of the three-way valve 14 is connected to the delivery tube three 17, and the delivery tube three 17 leads to the saline bottle 18, which is used to provide cleaning liquid. When the equipment needs to be cleaned, the three-way valve 14 can switch to the saline flow path, so that the physiological saline flows into the three-way valve 14 through the delivery tube three 17, and then enters the delivery tube one 13, and finally is injected into the detection cavity 3 or cleans other pipelines. In the system, the key role of the three-way valve 14 is to realize the switching of the flow path through the control of the PLC module 5 to ensure that blood drawing, blood transfusion and cleaning can enter the equipment along the corresponding paths respectively. Generally speaking, when the equipment needs to be cleaned, it can be roughly divided into two steps. First, the blood After the blood is tested in the detection chamber 3, we can use the negative pressure pump 4 to make the blood pass through the connecting head 12, the delivery tube 1 13 and the delivery tube 2 15 from the position of the liquid inlet 2, and finally inject it into the patient's body through the puncture head 16. The blood flowing back into the patient's body is heated by the heating rod in the insulation chamber 28 in the detection chamber 3 to maintain room temperature, that is, the blood flows back at a temperature that is not a blood coagulation temperature. This avoids the patient's discomfort caused by the temperature difference of the blood due to multiple blood draws and transfusions. When the blood reflux is completed, the valve port of the three-way valve 14 can be switched to close the valve port position connecting the delivery tube 2 15 and the three-way valve 14. At this time, the three-way valve 14 will be connected The two valve ports connecting the delivery tube 1 13 and the delivery tube 3 17 are opened, so that the negative pressure pump 4 can suck the physiological saline in the saline bottle 18 into the pipeline, so that it enters the position of the delivery tube 1 13, and at the same time, the blood remaining in the pipeline position of the delivery tube 13 is brought into the detection chamber 3 position in the protective shell 1 for synchronous flushing. At the same time, the valve at the position of the liquid inlet 2 is controlled again, and the physiological saline flushed into the detection chamber 3 in the protective shell 1 will all enter the waste liquid bottle 11 for waste liquid storage after flushing, and then start the second step. At this time, the valve passage at the position of the three-way valve 14 is changed, the connection port of the delivery tube 3 17 and the three-way valve 14 is closed, and the delivery tube 1 13 and the delivery tube 2 15 are connected again. The three-way valve 14 is connected. At this time, the pressure of the negative pressure pump 4 is applied, so that the physiological saline remaining in the delivery tube 13 that has not entered the detection chamber 3 can pass through the position of the delivery tube 2 15 to output the blood remaining in the delivery tube 2 15 and the puncture head 16 from the puncture head 16; this can ensure that the equipment can operate efficiently when performing blood collection, testing and cleaning tasks. At the same time, the saline bottle 18 can be hung or placed on a flat surface during actual use. The overall suction through negative pressure will not affect its normal use. The specific situation is freely selected according to the actual use process. The medical three-way provided between the delivery tube 2 15 can facilitate the user to query blood gas. ;

[0062] Please see attached Figure 2The waste liquid storage mechanism includes a plurality of support frames 10, each of which is mounted on the rear side of the protective shell 1 and wraps the liquid outlet 9. A waste liquid bottle 11 is mounted at one end of the liquid outlet 9, and the waste liquid bottle 11 penetrates the support frame 10 and extends to the interior.

[0063] Specifically, the waste liquid storage mechanism includes a support frame 10, which is installed on the rear side of the protective shell 1, and is used to stabilize and support the waste liquid treatment system, while wrapping the liquid outlet 9 to ensure the safety of the waste liquid flow. A waste liquid bottle 11 is connected to one end of the liquid outlet 9. Two waste liquid bottles 11 are provided. One waste liquid bottle 11 is used to collect and store waste liquid with residual blood after cleaning with saline after detection, and the other waste liquid bottle 11 is used to store the blood return liquid that needs to be drawn in advance to take away the residual saline in the delivery tube 1 13 and the delivery tube 2 15 and the detection chamber 3 when sampling again. This part of the stored liquid can be returned to the patient's body along the passage together with the blood in the detection chamber 3 through the action of the negative pressure pump 4 after the detection is completed.

[0064] Please see attached Figure 7 -Attached Fig. 9 , the PLC module 5 includes a central processing unit, a memory, a connection unit and a communication unit;

[0065] The central processing unit is the core of the PLC module 5 and is used to process and execute instructions;

[0066] The memory is used to store the logic program and data of system operation, and record the equipment status and operation process;

[0067] The connection unit is used to connect with the detection module 7, the valve control module 6, and the inlet and outlet liquid control module 8 to realize signal collection and control;

[0068] The communication unit is used to realize the communication between the PLC module 5 and external devices, and supports remote monitoring and data transmission;

[0069] The valve control module 6 includes a three-way valve control unit and a valve drive unit;

[0070] The three-way valve control unit is used to control the opening and closing state of the three-way valve 14;

[0071] The valve drive unit drives the three-way valve 14 to switch through a motor or a solenoid valve to ensure that the fluid flows in the set direction;

[0072] The inlet and outlet liquid control module 8 includes a pressure regulating unit, a liquid flow control unit and a waste liquid discharge unit;

[0073] The pressure regulating unit adjusts the pressure of the liquid entering the device through a pressure sensor and a controller;

[0074] The liquid flow control unit is used to control the amount of blood entering the detection chamber 3 and the amount of waste liquid discharged;

[0075] The waste liquid discharge unit is used to control the waste liquid to flow into the waste liquid storage mechanism through the pipeline, and realize the automatic discharge of the waste liquid through a pump or a valve.

[0076] Specifically, the PLC module 5 is the core control unit of the entire device, including a central processing unit, a memory, a connection unit and a communication unit. The central processing unit is responsible for processing and executing all instructions of the device to ensure that each operation step is accurate. The memory is used to store the operating logic and programs of the system, and record the operating status and operation process of the device. The connection unit ensures that the PLC module 5 is connected with the detection module 7, the valve control module 6 and the inlet and outlet liquid control module 8 to realize the signal acquisition and control functions inside the device, and the communication unit supports the communication between the PLC module 5 and external devices, which is convenient for remote monitoring and data transmission, and enhances the intelligent management capabilities of the equipment; the valve control module 6 is composed of a three-way valve control unit and a valve drive unit. The three-way valve control unit is mainly responsible for controlling the opening and closing state of the three-way valve 14, and accurately controls the switching of the fluid path through electrical signal instructions. The valve drive unit drives the switching of the three-way valve 14 through a motor or solenoid valve to ensure the liquid The blood or cleaning fluid flows in the set direction so that the blood or cleaning fluid flows as needed under different operation modes; the inlet and outlet liquid control module 8 is responsible for regulating the flow and pressure control of the liquid. Its pressure regulating unit adjusts the liquid pressure entering the device in real time through a pressure sensor and a controller to ensure that the liquid flow inside the device remains in an ideal state. The liquid flow control unit is used to control the amount of blood entering the detection chamber 3, and after the detection is completed, it can allow the blood to flow smoothly back into the patient's body, and the waste liquid used for cleaning can flow into the waste liquid storage mechanism through the pipeline, and then the waste liquid discharge unit controls the pump or valve to automatically discharge the waste liquid, ensuring that the entire system can quickly clean up the waste liquid after the detection is completed, ensuring the efficient operation and continuous use of the equipment; through the coordinated work of the above modules, the equipment realizes fully automated operation from blood collection, detection, to waste liquid treatment; at the same time, the PLC module 5 further improves the operating efficiency and data management capabilities of the equipment through logic programs and remote monitoring functions.

[0077] Embodiment 2:

[0078] Please see attached Figure 4 -Attached Figure 6A connection structure includes a docking ring 19, which is fixed on the side of the connector 12 close to the liquid inlet 2, and the docking ring 19 is embedded in the liquid inlet 2. A sealing rubber ring 20 is fixed on the inner wall of the docking ring 19, and the sealing rubber ring 20 fits the liquid inlet 2. A locking assembly distributed in a ring array is arranged inside the docking ring 19, and the locking assembly includes a fixing column 21, which is fixed inside the docking ring 19, and a spring 22 is sleeved on the outer wall of the fixing column 21. One end of the spring 22 is fixed inside the connector 12, and a slider 23 is fixed on the other end of the spring 22. A ball 24 is arranged on the side of the slider 23 away from the spring 22, and a limit block 26 is fixed on the outer wall of the slider 23. A fixing rod 25 is fixed inside the docking ring 19, and the limit block 26 slides through the fixing rod 25. A magnetic block 27 is fixed on the outer wall of the fixing rod 25, and the magnetic block 27 and the limit block 26 are magnetically attracted to each other.

[0079] Specifically, when the device needs to be moved, the device can be easily moved by grasping the recessed gripping positions on both sides of the protective shell 1. The connection between the connector 12 and the device can be achieved by pulling the pipeline with force, so that the docking ring 19 is separated from the liquid inlet 2. During the pulling process, the docking ring 19 embedded in the liquid inlet 2 will be disengaged from the liquid inlet 2, causing the sealing rubber ring 20 inside the docking ring 19 to also lose its close contact with the liquid inlet 2, thereby releasing the sealing effect. At the same time, when the docking ring 19 is disengaged, the ball 24 located inside the docking ring 19 will compress the spring 22 under the action of external force, so that the space of the spring 22 is compressed, and then the ball 24 is retracted into the inner wall of the docking ring 19, which will not hinder the disengagement process; the sliding mechanism between the limit block 26 and the fixed rod 25 also plays a role in this process. The limit block 26 slides along the fixed rod 25 to release the magnetic attraction with the magnetic attraction block 27 The effect makes the connection process smoother. When reinstalling, the docking ring 19 needs to be aligned with the liquid inlet 2 first. During the docking process, the ball 24 will be squeezed from the liquid inlet 2 again, and the spring 22 will also be compressed. However, when the docking ring 19 is fully in place and the connector 12 is aligned with the liquid inlet 2, the ball 24 will be aligned with the reserved slot in the liquid inlet 2. At this time, the spring 22 will use its own elastic recovery to release the accumulated elastic potential energy, push the slider 23 to reset, and drive the limit block 26 to slide along the fixing rod 25 to the correct position. Finally, the limit block 26 will be magnetically attracted to the magnetic block 27 again to ensure that the docking ring 19 is firmly fixed, and the ball 24 is firmly engaged in the groove of the liquid inlet 2 to complete the entire connection process. This design makes the connection structure of the equipment not only easy to disassemble and maintain, but also ensures the stability and sealing performance of the connection.

[0080] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of concentration analyzer, characterized in that: include: A protective shell (1) is provided with a liquid inlet (2) at its rear side, a plurality of liquid outlets (9) are provided on one side of the liquid inlet (2), the liquid outlets (9) are provided at the rear side of the protective shell (1), the liquid inlet (2) is connected to a detection chamber (3) via a pipeline, the detection chamber (3) is connected to the liquid outlet (9) via a pipeline, a negative pressure pump (4) is provided inside the detection chamber (3), and a sensor array is provided inside the detection chamber (3); A PLC module (5), which is installed inside the protective shell and is used for coordination between control modules and data transmission; A valve control module (6), which is installed inside the protective shell (1) and is used to control the opening and closing of the three-way valve (14) and the switching state of the pipeline; A detection module (7) is installed inside the protective shell (1) and is used for electrically connecting the detection module (7) to the sensor array; An inlet and outlet liquid control module (8), which is installed inside the protective shell (1) and is used to adjust the flow direction of liquid entering the detection cavity, including the entry of blood and the entry of cleaning liquid; A heat-insulating cavity (28) is arranged outside the detection cavity (3) and is used to heat the detection cavity through a built-in heating rod to evaporate and disinfect the residual salt water; A blood drawing mechanism, which is mounted on the protective shell (1) via a liquid inlet (2) and is used to draw blood from an artery in a patient's hand; The waste liquid storage mechanism is installed on the protective shell (1) through the liquid outlet (9) and is used to store blood after testing and liquid after flushing.

2. A novel concentration analyzer according to claim 1, characterized in that: The blood drawing mechanism comprises a connector (12), wherein the connector (12) is mounted on the protective shell (1) via a liquid inlet (2), a delivery tube (13) is fixed to one end of the connector (12) away from the liquid inlet (2), and a three-way valve (14) is mounted at one end of the delivery tube (13).

3. A novel concentration analyzer according to claim 2, characterized in that: A delivery tube 2 (15) is installed at one end of the three-way valve (14) away from the delivery tube 1 (13), a puncture head (16) is fixed at one end of the delivery tube 2 (15) away from the three-way valve (14), and the delivery tube 2 (15) is divided into two sections, and a medical three-way connection is arranged between them.

4. A novel concentration analyzer according to claim 2, characterized in that: A delivery pipe 3 (17) is installed at the middle port of the three-way valve (14), and a saline bottle (18) is installed at one end of the delivery pipe 3 (17) away from the three-way valve (14).

5. A novel concentration analyzer according to claim 1, characterized in that: The waste liquid storage mechanism comprises a plurality of support frames (10), each of which is mounted on the rear side of the protective shell (1) and wraps around the liquid outlet (9), and each of which is mounted with a waste liquid bottle (11) at one end of the liquid outlet (9), and the waste liquid bottle (11) passes through the support frame (10) and extends to the interior.

6. A novel concentration analyzer according to claim 1, characterized in that: The PLC module includes a central processing unit, a memory, a connection unit and a communication unit; The central processing unit is the core of the PLC module and is used to process and execute instructions; The memory is used to store the logic program and data of the system operation, and record the device status and operation process; The connection unit is used to connect with the detection module, the valve control module, and the inlet and outlet liquid control module to realize signal collection and control; The communication unit is used to realize the communication between the PLC and external devices, and supports remote monitoring and data transmission.

7. A novel concentration analyzer according to claim 1, characterized in that: The valve control module includes a three-way valve control unit and a valve drive unit; The three-way valve control unit is used to control the opening and closing state of the three-way valve (14); The valve driving unit drives the three-way valve (14) to switch via a motor or a solenoid valve, thereby ensuring that the fluid flows in a set direction.

8. A novel concentration analyzer according to claim 1, characterized in that: The inlet and outlet liquid control module includes a pressure regulating unit, a liquid flow control unit and a waste liquid discharge unit; The pressure regulating unit adjusts the pressure of the liquid entering the device through a pressure sensor and a controller; The liquid flow control unit is used to control the amount of blood entering the detection chamber and the amount of waste liquid discharged; The waste liquid discharge unit is used to control the waste liquid to flow into the waste liquid storage mechanism through the pipeline, and realizes the automatic discharge of the waste liquid through a pump or a valve.

9. A connection structure, according to a novel concentration analyzer as claimed in any one of claims 1 to 8, comprising a docking ring (19), characterized in that: The docking ring (19) is fixed to a side of the connector (12) close to the liquid inlet (2), the docking ring (19) is engaged and connected inside the liquid inlet (2), a sealing rubber ring (20) is fixed to the inner wall of the docking ring (19), the sealing rubber ring (20) is in close contact with the liquid inlet (2), and locking components distributed in a ring array are arranged inside the docking ring (19).

10. A connection structure according to claim 9, characterized in that: The lock assembly comprises a fixing column (21), wherein the fixing column (21) is fixed inside the docking ring (19), a spring (22) is sleeved on the outer wall of the fixing column (21), one end of the spring (22) is fixed inside the connector (12), a slider (23) is fixed on the other end of the spring (22), a ball (24) is arranged on the side of the slider (23) away from the spring (22), a limit block (26) is fixed on the outer wall of the slider (23), a fixing rod (25) is fixed inside the docking ring (19), the limit block (26) slides through the fixing rod (25), a magnetic block (27) is fixed on the outer wall of the fixing rod (25), and the magnetic block (27) and the limit block (26) are magnetically attracted to each other.

Images