A mixing device for an arterial blood sampler

Abstract

The utility model provides a kind of mixing device of arterial blood collector, including rotating shaft and the mixing assembly being fixed in its outside, and the side plate of polygon is respectively arranged in the two sides of rotating shaft and multiple bearing plates are fixed on side plate, the detachable blood gas needle loading plate is equipped on the bearing plate, and multiple detachable blood gas needle mounting clips are equipped on the blood gas needle loading plate;The blood gas needle mounting clip is detachably set on the bearing plate.By blood gas needle mounting clip detachably set on blood gas needle loading plate, and blood gas needle loading plate itself also detachably install in the design of bearing plate, effectively solve the core pain point of poor versatility of traditional mixing device.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a mixing device for an arterial blood collection device. Background Technology

[0002] Blood mainly consists of plasma, white blood cells, red blood cells, and platelets. Although their densities differ, the differences are very small. After centrifugation using density gradient centrifugation, the sample exhibits four layers. Due to the different densities of these components, the distribution of blood components becomes uneven after settling, requiring remixing of the sample to meet testing requirements. With the continuous advancement of medical diagnostic technology and the rapid development of testing methods, blood gas analysis is increasingly attracting the attention of clinicians. Currently, blood gas analysis requires arterial blood to analyze a patient's health status. Medical personnel collect samples using specialized arterial blood collection devices. Arterial blood collection is less convenient than venous blood collection and has stricter requirements, particularly regarding the thorough mixing of the collected sample. After collecting the arterial blood sample, the needle must be removed, the matching sealing cap screwed on, and the sample tube inverted to mix thoroughly, ensuring the anticoagulant (usually heparin sodium) is fully mixed with the blood sample to prevent blood clotting and affecting test results. This operation not only increases the workload of testing personnel, but also prolongs the reporting time because the blood sample needs to be mixed again before blood testing. Although there are currently motor-driven blood mixers, these mixers are usually rolling mixers because they are only fixed in the same direction as the roller. This method, because the blood sample tube is rolled horizontally, cannot meet the industry standard requirement of inverting the sample tube for mixing, resulting in unsatisfactory blood mixing effect. Utility Model Content

[0003] This invention proposes a mixing device for an arterial blood collection device, which solves the problem of poor versatility in the assembly of blood mixing devices with blood gas needles / blood collection tubes in the prior art.

[0004] The technical solution of this utility model is implemented as follows:

[0005] A mixing device for an arterial blood collection device includes a rotating shaft and a mixing assembly fixed to its exterior. Each side of the rotating shaft is provided with a polygonal side plate and a plurality of support plates fixed to the side plates. The support plates are provided with detachable blood gas needle loading plates and a plurality of detachable blood gas needle mounting clips. The blood gas needle mounting clips are detachably mounted on the support plates.

[0006] Furthermore, the carrier plate is provided with a magnetic suction component a, and the blood gas needle loading plate is provided with a magnetic suction component b. The magnetic suction components a and b attract each other through magnetic force to satisfy assembly or disassembly.

[0007] Furthermore, the blood gas needle mounting clip is provided with a magnetic suction component c, and the magnetic suction component a and the magnetic suction component c attract each other through magnetic force to satisfy assembly or disassembly; or the magnetic suction component c and the magnetic suction component b attract each other through magnetic force to satisfy assembly or disassembly.

[0008] Furthermore, a support groove is provided on the support plate, and the outer periphery of the blood gas needle loading plate is adapted to the support groove.

[0009] Furthermore, the blood gas needle loading plate is provided with handles on both sides.

[0010] Furthermore, the blood gas needle mounting clip is an elastic clip.

[0011] Furthermore, it also includes a drive assembly, which includes an L-shaped base plate, at least three support plates in the base plate, and the base plate is divided into a working area and a drive area; a motor is fixed in the drive area of ​​the base plate, and a belt is driven to the output end of the motor. The other side of the belt is sleeved on the outside of a rotating shaft that is fixed to the support plates on both sides of the working area by bearings at both ends, and the belt is driven to the rotating shaft.

[0012] Furthermore, a protective cover is attached to the adjacent support plate corresponding to the drive area, and a controller is provided on the protective cover, which is electrically connected to the motor.

[0013] Furthermore, the support plate has an arc-shaped design.

[0014] Furthermore, a cleaning port is provided at the L-shaped corner of the substrate corresponding to the working area, and there are at least two cleaning ports, each corresponding to one of the two corners of the working area.

[0015] The beneficial effects of the technical solution provided in this application are as follows:

[0016] 1. The mixing device of this arterial blood collection device is detachably mounted on the blood gas needle loading plate via a blood gas needle mounting clip, and the blood gas needle loading plate itself is also detachably mounted on the support plate. This design effectively solves the core pain point of poor versatility of traditional mixing devices. This hierarchical detachable structure significantly improves the flexibility and adaptability of the device, allowing users to quickly and accurately fix various blood sample tubes by simply replacing or matching specific blood gas needle mounting clips or the entire blood gas needle loading plate, depending on the brand, model, or specification of the arterial blood collection device they are using, without having to replace the entire mixing device or make complex modifications.

[0017] 2. The mixing device of this arterial blood collection device allows operators to easily adapt to various blood collection device sizes by selecting and installing the corresponding blood gas needle mounting clip on the same mixing device body, or by directly replacing the blood gas needle loading plate with a pre-installed specific clip. This not only significantly expands the application range of the device, making it compatible with various mainstream arterial blood collection devices on the market, but also significantly reduces the additional equipment investment costs incurred by users due to changes in blood collection device models.

[0018] 3. The mixing device of this arterial blood collection device is designed with high-speed and low-speed motors. The motor speed is controlled by a switch. High-speed rotation is used to quickly invert and mix the sample before testing. After mixing, low-speed rotation is used to mix other samples to be tested while the sample is being tested, preventing other samples from separating due to waiting. Low-speed rotation simulates the inverting and mixing operation of the blood collection device, achieving the purpose of thoroughly mixing blood and anticoagulant. The sample can be removed without stopping the machine, ensuring the timeliness and accuracy of test results. When the sample volume is ≥1 sample, it can significantly improve the testing speed, reduce the labor intensity of operators, save time for other testing operations, and improve the work efficiency of laboratory personnel. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the mixing device of the arterial blood collection device of this utility model;

[0021] Figure 2 This is an exploded view of the mixing device of the arterial blood collection device of this utility model;

[0022] Figure 3 This is a schematic diagram of the drive component of this utility model;

[0023] Figure 4 This is an exploded view of the mixing component of this utility model.

[0024] In the diagram: 10 Rotating shaft, 11 Side plate; 20 Mixing assembly, 21 Bearing plate, 22 Blood gas needle loading plate, 23 Blood gas needle mounting clip, 24 Magnetic component a, 25 Magnetic component b, 26 Magnetic component c, 27 Bearing groove, 28 Handle, 29 Partition; 30 Drive assembly, 31 Base plate, 32 Support plate, 33 Motor, 34 Belt, 35 Controller, 36 Protective cover, 37 Cleaning port. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Reference Figure 1-4 This embodiment discloses a mixing device for an arterial blood collection device, including a rotating shaft 10 and a mixing assembly 20 fixed externally thereon. Each side of the rotating shaft 10 has a polygonal side plate 11 and multiple support plates 21 fixed on the side plate 11. Each support plate 21 has a detachable blood gas needle loading plate 22, and each blood gas needle loading plate 22 has multiple detachable blood gas needle mounting clips 23. The blood gas needle mounting clips 23 are detachably mounted on the support plate 21. When the rotating shaft 10 drives the mixing assembly 20 to rotate, the polygonal structure causes the blood gas needle loading plates 22 and mounting clips 23 on each support plate 21 to exhibit differentiated movement trajectories. For example, at the same time, some blood collection tubes are in an upward state, while others are in a downward state, thus automatically achieving multi-angle reciprocating inversion in a single rotation. When the rotating shaft 10 drives the polygonal side plates 11 to rotate, due to the non-concentricity of the side plate's angular structure, the blood gas needle mounting clips 23 on each support plate 21 are forced to periodically change their spatial orientation during movement. For example, when the apex of the side plate turns to a higher point, the blood collection tube on the corresponding support plate 21 is inverted; when it turns to a lower point, it returns to an upright position. This continuous spatial pose switching simulates the core action of manual "reciprocating inversion and mixing," allowing the blood and anticoagulant to be fully mixed under the combined action of gravity and centrifugal force, strictly meeting industry standard requirements.

[0027] The detachable mechanism of the support plate 21 and the magnetic suction component b25 is a magnetic attraction mechanism. Specifically, the support plate 21 has a magnetic suction component a24, and the blood gas needle loading plate 22 has a magnetic suction component b25. Magnetic suction components a24 and b25 attract each other magnetically to facilitate assembly or disassembly. This magnetic coupling design between magnetic suction components a24 and b25 effectively addresses the dynamic replacement requirement of blood gas needles during mixing. Through this magnetic instant-detachment feature, operators can quickly remove the already mixed blood gas needle loading plate 22 while the device is continuously mixing other samples at low speed, and simultaneously replace it with the loading plate for the new sample to be mixed. This design directly avoids the drawback of traditional fixed structures requiring machine downtime for replacement, achieving parallel "mixing-replacement" operations and significantly improving continuous testing efficiency. Once the sample on a loading plate 22 is mixed, a vertical pulling force is applied to overcome the magnetic attraction threshold, and the blood gas needle loading plate 22 can be separated without damage. The new blood gas needle loading plate 22 is then placed close to the support plate 21, and the magnetic components automatically adsorb and reset, completing the installation within 1 second.

[0028] Similarly, the blood gas needle mounting clip 23 is equipped with a magnetic suction component c26. Magnetic suction components a24 and c26 attract each other magnetically to facilitate assembly or disassembly; or magnetic suction components c26 and b25 attract each other magnetically to facilitate assembly or disassembly. The direct magnetic connection design between magnetic suction component c26 and magnetic suction components b25 and a24 significantly expands the device's small sample adaptability. When the sample volume is small, such as for single-tube testing, the blood gas needle mounting clip 23 can be directly attached to magnetic suction component a24 on the support plate 21 via magnetic suction component c26, eliminating the intermediate layer of the loading plate 22. When the sample volume is large, the blood gas needle mounting clip 23 can be attached to magnetic suction component b25 on the blood gas needle loading plate 22 via magnetic suction component c26. The blood gas needle loading plate 22 integrates multiple mounting clips 23 to handle large batches of samples. In addition, when the single clip is directly connected, the rotating shaft 10 drives the carrier plate 21 to drive the mounting clip 23 to perform the same reciprocating mixing with the same effect, and can be independently disassembled and replaced - the single clip that has been mixed can be directly removed, and the new single clip can be used immediately after adsorption, without affecting the mixing process of adjacent samples.

[0029] It should be noted that the magnetic attraction force of the magnetic component is sufficient to resist the centrifugal force generated by the high-speed rotation of the rotating shaft 10, thus eliminating the risk of magnetic component detachment due to rotation speed from a physical perspective and ensuring the continuous stability of the mixing action.

[0030] In addition, a partition 29 is provided on one side of the support plate 21, which is mainly used to separate the blood gas needles / blood collection tubes on each blood gas needle loading plate 22 to avoid mutual interference.

[0031] Figure 4 In this design, a support groove 27 is formed on the support plate 21, and the outer periphery of the blood gas needle loading plate 22 is adapted to the support groove 27. The contour adaptation design of the support groove 27 and the blood gas needle loading plate 22 effectively enhances the dynamic stability and positioning accuracy of the mixing process. In addition, the polygonal side plate 11 drives the support plate 21 to tilt back and forth, and the mechanical contact surfaces of the support groove 27 and the side of the loading plate 22 share the rotational torque, preventing the magnetic suction component from detaching due to inertial force.

[0032] To improve the operability of the blood gas needle loading plate 22, handles 28 are provided on both sides of the blood gas needle loading plate 22. These handles mainly provide leverage points during the loading and unloading of the blood gas needle loading plate 22, making it convenient for the operator to remove the blood gas needle loading plate 22 from the support plate 21 or assemble the blood gas needle loading plate 22 onto the support plate 21.

[0033] In addition, when blood gas needles / blood collection tubes need to be installed or removed, the blood gas needle mounting clip 23 is set as an elastic clip. When clamping, the blood gas needle is aligned with the opening of the blood gas needle mounting clip 23. Pressing the blood gas needle / blood collection tube causes the opening arm of the elastic clip to deform and expand the clamping opening. After the blood gas needle / blood collection tube is inserted, the pressure is released, and the elastic restoring force forces the clamp arm to adhere tightly to the tube wall. When disassembling, pulling the blood gas needle / blood collection tube upward causes the opening of the elastic clip to be deformed by pressure and expand, making it easier for the blood gas needle / blood collection tube to detach from the opening of the elastic clip.

[0034] Furthermore, it also includes a drive assembly 30, which includes an L-shaped base plate 31. At least three support plates 32 are provided on the base plate 31, dividing the base plate 31 into a working area and a drive area. A motor 33 is fixed in the drive area of ​​the base plate 31, and a belt 34 is driven to the output end of the motor 33. The other side of the belt 34 is sleeved on the outside of a rotating shaft 10, which is fixed at both ends to the support plates 32 on both sides of the working area by bearings. The belt 34 is driven to the rotating shaft 10. The belt 34 drive design of the drive assembly 30 achieves high stability of the mixing action and adaptive load adjustment. The rotating shaft 10 is driven by the output end of the motor 33 via the belt 34. It should be noted that the belt 34 can specifically be a toothed belt, and gears are provided on the output shaft of the motor 33 and the rotating shaft 10 on both sides of the belt to mesh with the toothed belt, thereby increasing the power stability of the transmission. The gear meshing completely eliminates the risk of belt slippage, ensuring that the rotational speed of the rotating shaft 10 remains constant under the eccentric load of the polygonal side plate 11. Furthermore, the spacing of multiple support plates 32 on the substrate 31 ensures that the reciprocating mixing of samples in the working area and the operation of the motor 33 in the driving area do not interfere with each other. Further, a protective cover 36 is fitted onto adjacent support plates 32 corresponding to the driving area. A controller 35 is mounted on the protective cover 36, and the controller 35 is electrically connected to the motor 33. This means that they are connected via wires, circuit board traces, or other conductive media to transmit control signals, power, or both. The design of the protective cover 36 serves both to provide aesthetic protection and to increase safety and noise isolation.

[0035] In the entire drive assembly 30, to ensure its functionality and usability, the base plate 31 is designed in an L-shape; the support plate 32 connects the two sides of the L-shape of the base plate 31, forming a mutually fixed structure to achieve overall frame balance. The support plate 32 also features a rounded corner design. This rounded design allows the operator to quickly access the area of ​​the drive assembly 30 to operate the blood gas needle loading plate 22, preventing excessive contact and interference during operation.

[0036] In this embodiment, a cleaning port 37 is provided at the L-shaped corner of the substrate 31 corresponding to the working area, and there are at least two cleaning ports 37, each corresponding to one of the two corners of the working area. That is, the cleaning port 37 is not a through-hole type. First, the non-through-hole design ensures that there is at least one support point in the middle to prevent the L-shaped substrate 31 from being cut, thus ensuring the stability of the foundation. In addition, the non-through-hole design divides the work area into two cleaning ports 37 distributed on both sides, which is intended to facilitate subsequent cleaning work and avoid the difficulty of cleaning due to the dead corners of the working area.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mixing device for an arterial blood collection device, characterized in that, It includes a rotating shaft (10) and a mixing assembly (20) fixed to its exterior. Each side of the rotating shaft (10) is provided with a polygonal side plate (11) and a plurality of bearing plates (21) fixed on the side plate (11). The bearing plate (21) is provided with a detachable blood gas needle loading plate (22). The blood gas needle loading plate (22) is provided with a plurality of detachable blood gas needle mounting clips (23). The blood gas needle mounting clips (23) are detachably mounted on the bearing plate (21).

2. The mixing device for the arterial blood collection device as described in claim 1, characterized in that, The support plate (21) is provided with a magnetic suction component a (24), and the blood gas needle loading plate (22) is provided with a magnetic suction component b (25). The magnetic suction component a (24) and the magnetic suction component b (25) attract each other through magnetic force to satisfy assembly or disassembly.

3. The mixing device for the arterial blood collection device as described in claim 2, characterized in that, The blood gas needle mounting clip (23) is provided with a magnetic suction component c (26). The magnetic suction component a (24) and the magnetic suction component c (26) attract each other through magnetic force to satisfy assembly or disassembly; or the magnetic suction component c (26) and the magnetic suction component b (25) attract each other through magnetic force to satisfy assembly or disassembly.

4. The mixing device for the arterial blood collection device as described in claim 1, characterized in that, The support plate (21) has a support groove (27), and the outer periphery of the blood gas needle loading plate (22) is adapted to the support groove (27).

5. The mixing device for the arterial blood collection device as described in claim 1, characterized in that, The blood gas needle loading plate (22) is provided with handles (28) on both sides.

6. The mixing device for the arterial blood collection device as described in claim 1, characterized in that, The blood gas needle mounting clip (23) is an elastic clip.

7. The mixing device for the arterial blood collection device as described in claim 1, characterized in that, It also includes a drive assembly (30), which includes an L-shaped base plate (31), at least three support plates (32) in the base plate (31) and divides the base plate (31) into a working area and a drive area; a motor (33) is fixed in the drive area of ​​the base plate (31), and a belt (34) is driven to the output end of the motor (33). The other side of the belt (34) is sleeved on the outside of the rotating shaft (10) which is fixed at both ends to the support plates (32) on both sides of the working area by bearings, and the belt (34) is driven to the rotating shaft (10).

8. The mixing device for the arterial blood collection device as described in claim 7, characterized in that, A protective cover (36) is attached to the adjacent support plate (32) corresponding to the drive area. A controller (35) is provided on the protective cover (36), and the controller (35) is electrically connected to the motor (33).

9. The mixing device for the arterial blood collection device as described in claim 7, characterized in that, The support plate (32) has an arc-shaped design.

10. The mixing device for the arterial blood collection device as described in claim 7, characterized in that, A cleaning port (37) is provided at the L-shaped corner of the substrate (31) corresponding to the working area, and there are at least two cleaning ports (37) corresponding to the two corners of the working area respectively.

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