Disposable human arterial blood sample collector

Abstract

The invention relates to the technical field of blood sample collectors, and discloses a disposable human arterial blood sample collector, which comprises a sample storage device of a cylindrical hollow structure, and the sample storage device is configured to store a collected arterial blood sample; the breathable sealing cap is connected with one end of the sample storage device, the breathable sealing cap is provided with an expanding central pipe, an annular support frame, a gas filtering membrane and an exhaust groove, and the breathable sealing cap is configured to adjust gas flow in the sample storage device and isolate bacteria; the metal ball assembly is arranged at the bottom of the sample storage device, the metal ball assembly is provided with a metal ball, an anti-blocking bulge and a guide groove, and the metal ball assembly is configured to assist blood anticoagulation. The device effectively ensures smooth collection of arterial blood, effective discharge of gas, anticoagulation of blood samples, and prevention of backflow and blockage.

Description

Technical Field

[0001] This invention relates to the field of blood sample collection technology, and more specifically, to a disposable human arterial blood sample collector. Background Technology

[0002] Existing disposable arterial blood sampling devices are widely used in clinical testing. Their main function is to collect arterial blood samples and store them in a sealed container for subsequent blood gas analysis and related tests. However, traditional devices still have shortcomings in structure and function, often failing to simultaneously meet the comprehensive requirements of airtightness, air permeability, and sample stability, which can easily affect the quality of blood sample testing.

[0003] Currently, traditional arterial blood sampling devices typically use the sample reservoir as a simple blood storage chamber, lacking a design for regulating gas exchange. This can easily lead to internal pressure imbalances or residual air, affecting the safety and accuracy of sampling. Furthermore, conventional sealing caps are mostly single-layered or simply sealed, making it difficult to balance breathability and sterility. This poses a risk of bacterial invasion or impaired gas expulsion, negatively impacting both clinical operators and test results. In addition, blood samples are highly prone to coagulation after collection, leading to distorted blood gas analysis results. Existing anticoagulation measures mostly rely on pre-coating with anticoagulants, but the lack of effective mechanical support structures at the bottom of the sample reservoir means that localized blood deposition or coagulation remains, reducing sample preservation stability.

[0004] Therefore, how to simultaneously achieve good gas regulation, bacterial isolation, and anticoagulation assistance in the sample container has become a problem that needs to be solved by existing technologies. Summary of the Invention

[0005] In view of this, the present invention proposes a disposable human arterial blood sample collector, which aims to solve the problems in the current arterial blood sample collection device, such as the lack of gas regulation in the sample reservoir leading to uneven internal pressure, the difficulty in achieving both air permeability and sterility in the sealing cap, and the easy coagulation of blood samples and the lack of mechanical anti-coagulation structure.

[0006] This invention proposes a disposable human arterial blood sample collector, comprising: The sample reservoir is a cylindrical hollow structure configured to store collected arterial blood samples. A breathable sealing cap is connected to one end of the sample container. The breathable sealing cap is equipped with an enlarged central tube, an annular support frame, a gas filter membrane, and an exhaust groove. The breathable sealing cap is configured to regulate the gas flow inside the sample container and isolate bacteria. The metal ball assembly, located at the bottom of the sample reservoir, is equipped with a metal ball, an anti-clogging protrusion, and a guide groove. The metal ball assembly is configured to assist in blood anticoagulation.

[0007] Furthermore, the breathable sealing cap includes: An enlarged diameter center tube is located in the middle of the inner side of the ventilated sealing cap; An annular support frame is provided between the enlarged diameter central tube and the inner side of the ventilated sealing cap. One end of the annular support frame is connected to the inner wall of the ventilated sealing cap, and the other end of the annular support frame is connected to the enlarged diameter central tube. The annular support frame is configured to fix the enlarged diameter central tube inside the ventilated sealing cap. A gas filter membrane is disposed inside the expanded diameter central tube, and the gas filter membrane is connected to the inner wall of the expanded diameter central tube. The venting groove extends axially along the breathable sealing cap and is connected to the outside. The venting groove is used to allow gas to escape during blood sample collection and to prevent blood backflow and blockage.

[0008] Furthermore, the metal ball assembly includes: Metal spheres are placed inside the sample reservoir; The anti-blocking protrusion is fixed to the bottom of the inner side of the sample container. It has an arc structure and is evenly distributed along the circumference of the inner wall of the sample container. When the top of the anti-blocking protrusion contacts the surface of the metal ball, a gap is formed. The guide groove is formed on the inner wall of the sample container and is positioned opposite to the anti-blocking protrusion. The guide groove extends along the axial direction of the sample container and is connected to the outlet. The guide groove is used to guide the metal ball to move axially.

[0009] Furthermore, a ventilator cap is fixedly installed on the outside of the ventilator sealing cap, and an anticoagulant test paper is embedded on the inside of the ventilator cap. The anticoagulant test paper is fixed to the inner wall of the ventilator cap by adhesive.

[0010] Furthermore, the surface of the anticoagulant test paper is coated with a lithium heparin coating, the thickness of which is 0.1 mm to 0.2 mm.

[0011] Furthermore, an air vent is provided on the inner side of the vent cap at the position corresponding to the anticoagulant test paper side, and a hydrophobic and breathable membrane is embedded in the air vent.

[0012] Furthermore, several exhaust channels are provided, and these exhaust channels are evenly distributed along the inner circumference of the breathable sealing cap.

[0013] Furthermore, it also includes the push rod assembly and the tail connector; The push rod assembly includes a hollow tube, an elastic sealing ring, and a push plate, wherein, The outer diameter of the hollow tube body matches the inner diameter of the tube body, and its surface is provided with an annular groove for installing an elastic sealing ring. The elastic sealing ring is made of silicone rubber and is fixed in the annular groove; The pusher plate is fixed to one end of the hollow tube and forms an integral structure with the hollow tube through injection molding. The tail connector is fixed to the other end of the hollow tube by a threaded connection, and a one-way valve structure is installed inside it.

[0014] Furthermore, the width of the anticoagulant test paper is 2mm to 5mm.

[0015] Compared with existing technologies, the advantages of this invention are as follows: By installing an improved ventilated sealing cap at the end of the sample container, the device can effectively regulate the internal gas flow during use. The ventilated sealing cap is equipped with an enlarged central tube, which increases the stability of the gas channel, making the gas flow smoother during discharge and preventing turbulence or negative pressure from affecting the blood sample. Simultaneously, the exhaust groove extends axially and connects to the outside, quickly releasing residual air generated by pressure differences during collection, avoiding inaccurate sampling volume or air bubbles due to residual gas, thus ensuring the safety and accuracy of blood sample collection. While ensuring ventilability, a gas filter membrane is also embedded inside the ventilated sealing cap. This filter membrane not only allows one-way gas permeability, ensuring smooth gas discharge, but also effectively blocks the intrusion of external bacteria and particulate matter, forming a stable sterile barrier. This design allows the sample container to maintain excellent sealing while retaining ventilability, reducing the risk of cross-infection and ensuring the purity of the blood sample during storage, providing a reliable guarantee for subsequent clinical testing. Furthermore, this invention incorporates a metal ball assembly at the bottom of the sample reservoir. This assembly consists of a metal ball, an anti-clogging protrusion, and a guide groove. The metal ball, located within the effective range of the anti-clogging protrusion and guide groove, continuously rolls with the blood flow or slight movement during sampling and handling. This physical disturbance prevents blood from settling at the bottom, slows red blood cell aggregation and fibrin deposition, thus aiding in anticoagulation. Compared to relying solely on pre-coated anticoagulants, this design further enhances the uniformity and durability of anticoagulation, ensuring that the blood sample remains in a suitable testing state for an extended period. In summary, this invention, through structural optimization of the breathable sealing cap and the metal ball assembly, balances gas regulation, aseptic sealing, and anticoagulation functions. This design not only improves the safety and convenience of blood collection operations and reduces the risks to medical personnel, but also significantly improves the preservation stability and testing accuracy of blood samples, demonstrating high clinical application value. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the structure of a disposable human arterial blood sample collector provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the ventilation cap provided in an embodiment of the present invention; Among them, 1. Sample container; 2. Expanded diameter central tube; 3. Anti-clogging protrusion; 4. Metal ball; 5. Anticoagulant test paper; 6. Breathable sealing cap; 7. Filter element; 8. Vent cap. Detailed Implementation

[0017] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] like Figures 1-2 As shown in some embodiments of this application, this embodiment provides a disposable human arterial blood sample collector, including: a sample reservoir 1, a breathable sealing cap 6, and a metal ball assembly.

[0019] Specifically, the sample reservoir 1 is a cylindrical hollow structure, configured to store collected arterial blood samples; the ventilated sealing cap 6 is connected to one end of the sample reservoir 1, and the ventilated sealing cap 6 is equipped with an enlarged central tube 2, an annular support frame, a gas filter membrane and an exhaust groove, and is configured to regulate the gas flow inside the sample reservoir 1 and isolate bacteria; the metal ball assembly is located at the bottom of the sample reservoir 1, and the metal ball assembly is equipped with a metal ball 4, an anti-clogging protrusion 3 and a guide groove, and is configured to assist in blood anticoagulation.

[0020] Specifically, the breathable sealing cap 6 includes: an enlarged diameter central tube 2 disposed in the middle of the inner side of the breathable sealing cap 6; an annular support frame disposed between the enlarged diameter central tube 2 and the inner side of the breathable sealing cap 6, one end of the annular support frame being connected to the inner wall of the breathable sealing cap 6, and the other end of the annular support frame being connected to the enlarged diameter central tube 2, the annular support frame being configured to fix the enlarged diameter central tube 2 inside the breathable sealing cap 6; a gas filter membrane disposed inside the enlarged diameter central tube 2, the gas filter membrane being connected to the inner wall of the enlarged diameter central tube 2; and an exhaust groove extending axially along the breathable sealing cap 6, the exhaust groove communicating with the outside, the exhaust groove being used to allow gas to be discharged during blood sample collection and to prevent blood backflow and blockage.

[0021] Specifically, the ventilated sealing cap 6 utilizes an enlarged central tube 2 located in the center of its inner side, forming the core channel for gas flow within the sample reservoir 1. Compared to traditional designs, the enlarged central tube 2 increases the channel diameter, allowing for smoother gas discharge, preventing blood backflow or air bubble residue, and improving the cap's compatibility with different sample reservoir models 1. A ring-shaped support frame securely connects the enlarged central tube 2 to the inside of the ventilated sealing cap 6, ensuring it does not move or deviate from its axis during use, thus maintaining the stability of the gas discharge channel. Through the ring-shaped support frame, the entire structure can withstand pressure changes during blood collection without deformation, ensuring smooth venting. An embedded gas filter membrane in the enlarged central tube 2 filters the gas discharged from the sample reservoir 1 while blocking external bacteria or particulate matter from entering, creating a sterile environment. This design ensures both the permeability of the sample reservoir 1 and enhances the safety and purity of the blood sample. The venting groove extends axially along the breathable sealing cap 6 and communicates with the outside, allowing for rapid exhaust of internal gas when blood enters the sample reservoir 1, while preventing blood backflow and blockage of the channel. Through the combination of the enlarged central tube 2, the gas filter membrane, and the venting groove, the breathable sealing cap 6 achieves smooth gas discharge, sterile isolation, and anti-blocking functions during blood collection, ensuring efficient and safe blood sample collection.

[0022] Specifically, the metal ball assembly includes: a metal ball 4 disposed inside the sample reservoir 1; an anti-blocking protrusion 3 fixed to the bottom inner side of the sample reservoir 1, having an arc-shaped structure and being evenly distributed circumferentially along the inner wall of the sample reservoir 1, with a gap formed when the top of the anti-blocking protrusion 3 contacts the surface of the metal ball 4; and a guide groove opened on the inner wall of the sample reservoir 1 and positioned opposite to the anti-blocking protrusion 3, extending axially along the sample reservoir 1 and communicating with the outlet, the guide groove being used to guide the metal ball 4 to move axially.

[0023] Specifically, the metal ball assembly is located at the bottom of the sample reservoir 1 and includes a metal ball 4, an anti-clogging protrusion 3, and a guide groove. During blood entry and operation, the metal ball 4 rolls along the inner wall of the sample reservoir 1, using its own weight and the impact force of the blood to generate micro-disturbances, thereby reducing blood deposition at the bottom, helping to prevent local coagulation and improving the anticoagulation effect. The anti-clogging protrusion 3 is fixed to the inner bottom of the sample reservoir 1, has an arc-shaped structure, and is evenly distributed circumferentially along the inner wall, with its top forming a gap with the surface of the metal ball 4. This design ensures that the metal ball 4 remains active during rolling, preventing it from blocking the outlet due to positional shift, and also enhances local fluidity when impacting blood, further promoting the anticoagulation effect. The guide groove extends axially along the sample reservoir 1 and communicates with the outlet, its position corresponding to the anti-clogging protrusion 3. Guided by the guide groove, the metal ball 4 moves axially, ensuring unobstructed outlet flow and preventing blood or the metal ball 4 from blocking the outlet during blood collection. The combination of the guide groove and the anti-clogging protrusion 3 makes the movement trajectory of the metal ball 4 controllable, achieving the dual functions of continuous auxiliary anticoagulation and unobstructed outlet flow.

[0024] Specifically, it also includes a push rod assembly and a tail connector; the push rod assembly includes a hollow tube, an elastic sealing ring, and a push plate, wherein the outer diameter of the hollow tube matches the inner diameter of the tube, and its surface is provided with an annular groove for installing the elastic sealing ring; the elastic sealing ring is made of silicone rubber and is fixed in the annular groove; the push plate is fixed to one end of the hollow tube and forms an integral structure with the hollow tube through an injection molding process; the tail connector is fixed to the other end of the hollow tube by a threaded connection, and its interior is provided with a one-way valve structure.

[0025] Specifically, the pusher assembly includes a hollow tube, an elastic sealing ring, and a pusher plate. The outer diameter of the hollow tube matches its inner diameter, and its surface has an annular groove for installing the elastic sealing ring. The elastic sealing ring is made of flexible silicone rubber, which forms a tight seal with the tube, ensuring that blood does not leak from the tube gaps during the push operation. The pusher plate is fixed to one end of the hollow tube and formed an integral structure with the tube through injection molding, achieving stable transmission of the push action. When the user pushes the pusher plate, the force is evenly applied to the blood inside the tube, ensuring that the blood flows smoothly along the tube without backflow. The tail connector is fixed to the other end of the hollow tube by a threaded connection and has a one-way valve structure inside. The one-way valve ensures that the blood flows in only one direction during the push process, preventing backflow and improving blood collection safety and operational reliability. The cooperation between the pusher assembly and the tail connector enables the entire blood collection device to achieve sealed and efficient blood delivery while also ensuring ease of operation and sample safety.

[0026] Understandably, the sample reservoir 1 of this device adopts a cylindrical hollow structure to store collected arterial blood samples. During blood collection, blood flows into the sample reservoir 1 through the lancet. The cylindrical structure of the sample reservoir 1 not only provides sufficient volume for blood storage but also ensures the stability of the internal blood flow, providing a spatial basis for the function of subsequent auxiliary structures. Secondly, the ventilated sealing cap 6, connected to one end of the sample reservoir 1, regulates the gas flow inside the sample reservoir 1 and isolates it from external bacteria. The enlarged diameter central tube 2 is located in the middle of the inner side of the ventilated sealing cap 6 and is fixed by a ring support frame, keeping the central tube in a stable position inside the ventilated sealing cap 6. A gas filter membrane is embedded inside the enlarged diameter central tube 2 to filter the discharged gas and prevent external contaminants from entering the sample reservoir 1. The exhaust groove extends axially along the ventilated sealing cap 6 and communicates with the outside, allowing the gas generated when blood enters the sample reservoir 1 to be discharged smoothly, avoiding blockages caused by gas residue or backflow, thereby ensuring the smooth progress of the blood collection process. Secondly, the metal ball assembly is located at the bottom of the sample reservoir 1 and consists of a metal ball 4, an anti-clogging protrusion 3, and a guide groove. During blood inflow and vibration, the metal ball 4 rolls along the inner wall of the sample reservoir 1. The anti-clogging protrusion 3 forms a gap with the metal ball 4, ensuring that the metal ball 4 remains active and preventing outlet blockage. The guide groove extends axially along the sample reservoir 1 and connects to the outlet, guiding the metal ball 4 to move axially, further ensuring smooth blood flow. The micro-disturbance generated by the rolling of the metal ball 4 reduces blood deposition at the bottom, aiding in anticoagulation and thus improving the preservation stability and detection accuracy of the blood sample. Finally, the pusher assembly and tail connector enable convenient operation and one-way blood transfusion. The hollow tube body and elastic sealing ring cooperate to form a sealing system, and the pusher is integrally connected to the tube body through injection molding, achieving stable transmission of the pushing action. The one-way valve structure inside the tail connector ensures that blood will not flow back during sampling and operation, further ensuring the safety and integrity of sample collection.

[0027] In a specific embodiment of this application, the above steps are implemented as follows: First, in practical applications, the sample reservoir 1 is a cylindrical hollow structure that can hold a certain volume of arterial blood sample. When medical personnel use the device to collect blood, the blood enters the sample reservoir 1 through the snipping needle. The cylindrical structure provides a stable storage space and ensures that the blood is evenly distributed during the sampling process, providing effective conditions for the auxiliary anticoagulation function of the subsequent metal ball assembly.

[0028] Secondly, the ventilated sealing cap 6 plays a crucial role in actual use. The enlarged central tube 2 is located in the middle of the inner side of the ventilated sealing cap 6, allowing gas in the sample reservoir 1 to escape smoothly, preventing blood backflow or air bubble residue. The annular support frame fixes the enlarged central tube 2 inside the ventilated sealing cap 6, ensuring the stability of the exhaust channel during blood collection. A gas filter membrane is embedded in the inner wall of the enlarged central tube 2, filtering impurities in the exhaust gas and isolating bacteria, ensuring a safe and sterile blood sample environment. The exhaust groove extends axially and connects to the outside, allowing gas to escape smoothly during blood flow, preventing blood blockage or abnormal pressure, thus ensuring smooth blood collection.

[0029] After blood collection, the metal ball assembly plays an auxiliary role in anticoagulation. The metal ball 4 is located at the bottom of the sample reservoir 1 and rolls along the inner wall during blood inflow and agitation, generating micro-disturbances that effectively prevent blood from settling at the bottom. The anti-clogging protrusions 3 have an arc-shaped structure and are evenly distributed along the inner wall of the sample reservoir 1, ensuring that the metal ball 4 remains active during rolling and does not clog the outlet due to improper positioning. The guide groove extends axially along the sample reservoir 1 and communicates with the outlet, guiding the metal ball 4 to move axially, keeping the outlet unobstructed, and further promoting blood mixing and anticoagulation through impact.

[0030] Finally, the pusher assembly and tail connector enable convenient blood delivery and unidirectional control during actual operation. The hollow tube body uses an annular groove to fix an elastic sealing ring, forming a seal with the blood contact surface to ensure no leakage during delivery. The integrated design of the pusher and hollow tube body ensures operational stability. The unidirectional valve inside the tail connector ensures that blood flows in only one direction, preventing backflow and ensuring a safe and reliable collection process. Through this series of structural combinations, medical personnel can safely and efficiently complete arterial blood sample collection, ensuring the integrity of the blood sample and its anticoagulant effect.

[0031] The above scenarios are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0032] Specifically, a ventilated cap 8 is fixedly installed on the outside of the ventilated sealing cap 6, and an anticoagulant test paper 5 is embedded in the inside of the ventilated cap 8. The anticoagulant test paper 5 is fixed to the inner wall of the ventilated cap 8 by adhesive bonding.

[0033] Specifically, the surface of the anticoagulant test paper 5 is coated with a lithium heparin coating, the thickness of which is 0.1 mm to 0.2 mm.

[0034] Specifically, the width of the anticoagulant test paper 5 is 2mm to 5mm.

[0035] Specifically, a vent hole is provided on the inner side of the vent cap 8 at the position corresponding to one side of the anticoagulant test paper 5, and a hydrophobic and breathable membrane is embedded in the vent hole.

[0036] Understandably, the ventilation cap 8 is located outside the ventilated sealing cap 6, and its main function is to provide auxiliary functions for blood anticoagulation while ensuring the sealing of the sample container 1. An anticoagulant test strip 5 is embedded inside the ventilation cap 8 and fixed to the inner wall of the cap 8 by adhesive bonding. This fixing method ensures that the anticoagulant test strip 5 will not shift during use and allows the blood to fully exert its anticoagulant effect when in contact with the test strip surface. Secondly, the structural design of the anticoagulant test strip 5 is the core of achieving the anticoagulant function. The surface of the test strip is coated with a heparin lithium coating, with the coating thickness controlled within the range of 0.1 mm to 0.2 mm. This ensures the stability of heparin lithium release while avoiding excessive coating thickness that could lead to drug waste or insufficient blood contact. The width of the anticoagulant test strip 5 is designed to be 2 mm to 5 mm, matching the internal space of the ventilation cap 8 and covering the key channels through which blood flows, thereby effectively enhancing the blood anticoagulant effect. Finally, the design of the vent and the hydrophobic breathable membrane ensures gas discharge and liquid barrier functions. A vent is located inside the vent cap 8 on the side corresponding to the anticoagulant test strip 5. A hydrophobic and breathable membrane is embedded in the vent, allowing gas inside the sample reservoir 1 to escape smoothly while preventing blood from seeping into the vent cap 8 and contacting areas outside the anticoagulant test strip 5. This structural design ensures the stable operation of the anticoagulant test strip 5, while preventing blood backflow or contamination, thus guaranteeing the safety of the blood collection process and the integrity of the blood sample.

[0037] In a specific embodiment of this application, the above steps are implemented as follows: In practical applications, the ventilation cap 8 is fixed to the outside of the breathable sealing cap 6, forming an outer auxiliary structure for achieving the dual functions of blood anticoagulation and gas expulsion. When medical personnel use this disposable human arterial blood sample collector, the blood flows into the sample reservoir 1 and comes into contact with the anticoagulant test paper 5 inside the ventilation cap 8, thereby exerting an anticoagulant effect. The anticoagulant test paper 5 is fixed to the inner wall of the ventilation cap 8 by adhesive bonding, ensuring that the test paper will not loosen or fall off during blood collection and transportation. The specific size and coating thickness of the anticoagulant test paper 5 are key to ensuring its function. In this example, the anticoagulant test paper 5 is 2mm to 5mm wide, which can cover the key areas through which the blood flows, allowing the blood to fully contact the heparin lithium coating. The coating thickness is controlled between 0.1mm and 0.2mm to ensure that the heparin lithium can be gradually released after contact with the blood, ensuring both the anticoagulant effect and avoiding drug waste or coating detachment. Meanwhile, the vent and hydrophobic breathable membrane ensure smooth gas discharge and liquid barrier function in this example. The vent is located inside the vent cap 8, corresponding to the position of the anticoagulant test strip 5. The embedded hydrophobic breathable membrane allows gas generated during blood sample collection to escape while preventing blood from seeping into the vent cap 8, thus avoiding contamination of the anticoagulant test strip 5 or external components. This design ensures both effective blood anticoagulation and the safety and integrity of the blood collection process in practical use.

[0038] The above scenarios are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0039] Specifically, there are several exhaust channels, and these exhaust channels are evenly distributed along the inner circumference of the ventilated sealing cap 6.

[0040] Understandably, firstly, the number of venting channels indicates that the vented sealing cap 6 contains multiple venting channels, forming a gas discharge channel. This multi-venting channel design allows for rapid and uniform air discharge during blood flow into the sample reservoir 1, preventing blood backflow or air bubbles from forming inside the reservoir 1 and ensuring smooth blood collection. Secondly, the venting channels are evenly distributed circumferentially along the inner side of the vented sealing cap 6, ensuring a ring-shaped gas discharge channel throughout the entire vented sealing cap 6. This prevents gas discharge from concentrating at a single point, avoiding excessively high or low local pressure. This uniform distribution design effectively regulates gas flow within the sample reservoir 1, maintaining internal pressure balance and reducing the risk of blood splashing or backflow due to uneven pressure during blood collection. Furthermore, the venting channels are connected to the outside environment, and combined with the design of the expanded diameter central tube 2 and the gas filter membrane, the discharged gas is filtered, preventing external impurities and bacteria from entering the sample reservoir 1, thus ensuring the sterility and safety of the blood sample. The structure of the multi-ventilation groove also improves the air permeability, ensuring that the sample container 1 can be vented in time when blood flows in rapidly, avoiding blood coagulation or sampling errors.

[0041] In a specific embodiment of this application, the above steps are implemented as follows: In practical applications, the ventilated sealing cap 6 is provided with several venting grooves, such as three or more, which form multiple gas discharge channels inside the ventilated sealing cap 6. When blood flows into the sample reservoir 1 through the blood collection needle, the air inside the sample reservoir 1 is quickly discharged through these venting grooves, thereby ensuring that the blood smoothly fills the sample reservoir 1 without backflow or blood splashing due to gas retention. At the same time, these venting grooves are evenly distributed circumferentially along the inner side of the ventilated sealing cap 6. In this example, the venting grooves can be understood as being arranged in a ring or at equal intervals. This layout ensures that air is evenly discharged from different positions in the sample reservoir 1, avoiding excessively high or low local air pressure, maintaining the internal pressure balance of the sample reservoir 1, and improving the safety and stability of blood collection. In addition, the venting grooves are connected to the outside and are used in conjunction with the design of the expanded diameter central tube 2 and the gas filter membrane. In this example, when blood flows into the sample reservoir 1, air is discharged through the exhaust channel and filtered through the gas filter membrane to prevent dust or bacteria from entering the sample reservoir 1, thus ensuring the sterility of the blood sample and the accuracy of the test.

[0042] The above scenarios are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0043] In the above embodiments, by installing an improved ventilated sealing cap 6 at the end of the sample reservoir 1, the device can effectively regulate the internal gas flow during use. The ventilated sealing cap 6 is equipped with an enlarged central tube 2, which increases the stability of the gas channel, making the gas flow smoother during discharge and preventing turbulence or negative pressure from affecting the blood sample. Simultaneously, the exhaust groove extends axially and connects to the outside, quickly releasing residual air generated by pressure differences during collection, avoiding inaccurate sampling volume or air bubbles due to residual gas, thus ensuring the safety and accuracy of blood sample collection. In addition to its ventilated performance, the ventilated sealing cap 6 also incorporates a gas filter membrane. This filter membrane not only allows unidirectional gas permeation, ensuring smooth gas discharge, but also effectively blocks the intrusion of external bacteria and particulate matter, forming a stable sterile barrier. This design allows the sample reservoir 1 to maintain both ventilability and excellent sealing, reducing the risk of cross-infection and ensuring the purity of the blood sample during storage, providing a reliable guarantee for subsequent clinical testing. Furthermore, this invention adds a metal ball assembly to the bottom of the sample reservoir 1. This assembly consists of a metal ball 4, an anti-clogging protrusion 3, and a guide groove. The metal ball 4 is located within the effective range of the anti-clogging protrusion 3 and the guide groove, and continuously rolls with the blood flow or slight shaking during sampling and handling. This physical disturbance prevents blood from settling at the bottom, slows down red blood cell aggregation and fibrin deposition, thereby aiding in anticoagulation. Compared to simply relying on pre-coated anticoagulants, this design further improves the uniformity and durability of anticoagulation, ensuring that the blood sample remains in a suitable testing state for a longer period of time. In summary, this invention, through structural optimization of the breathable sealing cap 6 and the metal ball assembly, balances gas regulation, aseptic sealing, and anticoagulation functions. This design not only improves the safety and convenience of blood collection operations and reduces the risks to medical personnel, but also significantly improves the preservation stability and testing accuracy of blood samples, possessing high clinical application value.

[0044] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program goods. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program goods embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0045] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program goods according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0046] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0047] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A disposable human arterial blood sample collector, characterized in that, include: The sample reservoir is a cylindrical hollow structure configured to store collected arterial blood samples. A breathable sealing cap is connected to one end of the sample container. The breathable sealing cap is equipped with an enlarged central tube, an annular support frame, a gas filter membrane, and an exhaust groove. The breathable sealing cap is configured to regulate the gas flow inside the sample container and isolate bacteria. The metal ball assembly, located at the bottom of the sample reservoir, is equipped with a metal ball, an anti-clogging protrusion, and a guide groove. The metal ball assembly is configured to assist in blood anticoagulation.

2. The disposable human arterial blood sample collector as described in claim 1, characterized in that, The breathable sealing cap includes: An enlarged diameter center tube is located in the middle of the inner side of the ventilated sealing cap; An annular support frame is provided between the enlarged diameter central tube and the inner side of the ventilated sealing cap. One end of the annular support frame is connected to the inner wall of the ventilated sealing cap, and the other end of the annular support frame is connected to the enlarged diameter central tube. The annular support frame is configured to fix the enlarged diameter central tube inside the ventilated sealing cap. A gas filter membrane is disposed inside the expanded diameter central tube, and the gas filter membrane is connected to the inner wall of the expanded diameter central tube. The venting groove extends axially along the breathable sealing cap and is connected to the outside. The venting groove is used to allow gas to escape during blood sample collection and to prevent blood backflow and blockage.

3. The disposable human arterial blood sample collector as described in claim 2, characterized in that, The metal ball assembly includes: Metal spheres are placed inside the sample reservoir; The anti-blocking protrusion is fixed to the bottom of the inner side of the sample container. It has an arc structure and is evenly distributed along the circumference of the inner wall of the sample container. When the top of the anti-blocking protrusion contacts the surface of the metal ball, a gap is formed. The guide groove is formed on the inner wall of the sample container and is positioned opposite to the anti-blocking protrusion. The guide groove extends along the axial direction of the sample container and is connected to the outlet. The guide groove is used to guide the metal ball to move axially.

4. The disposable human arterial blood sample collector as described in claim 3, characterized in that, A ventilated cap is also fixedly installed on the outside of the ventilated sealing cap. An anticoagulant test paper is embedded inside the ventilated cap and is fixed to the inner wall of the ventilated cap by adhesive.

5. The disposable human arterial blood sample collector as described in claim 4, characterized in that, The surface of the anticoagulant test paper is coated with a lithium heparin coating, the thickness of which is 0.1 mm to 0.2 mm.

6. The disposable human arterial blood sample collector as described in claim 5, characterized in that, A vent hole is provided on the inside of the vent cap at the position corresponding to the anticoagulant test paper, and a hydrophobic and breathable membrane is embedded in the vent hole.

7. The disposable human arterial blood sample collector as described in claim 2, characterized in that, Several exhaust channels are provided, and the exhaust channels are evenly distributed along the inner circumference of the breathable sealing cap.

8. The disposable human arterial blood sample collector as described in claim 1, characterized in that, It also includes the push rod assembly and the tail connector; The push rod assembly includes a hollow tube, an elastic sealing ring, and a push plate, wherein, The outer diameter of the hollow tube body matches the inner diameter of the tube body, and its surface is provided with an annular groove for installing an elastic sealing ring. The elastic sealing ring is made of silicone rubber and is fixed in the annular groove; The pusher plate is fixed to one end of the hollow tube and forms an integral structure with the hollow tube through injection molding. The tail connector is fixed to the other end of the hollow tube by a threaded connection, and a one-way valve structure is installed inside it.

9. The disposable human arterial blood sample collector as described in claim 5, characterized in that, The width of the anticoagulant test paper is 2mm to 5mm.

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