A blood collection tube premixing mechanism and a blood collection table having the same

Abstract

The present application relates to blood collection tube premixing technical field, especially a kind of blood collection tube premixing mechanism, including fixedly arranged screw pair, both ends of the screw pair are fixedly arranged, at least detachably mounted with a collector on the outer wall of the nut piece of the screw pair, at least one manual driving component is installed below the nut piece, the lower end of the manual driving component is suspendedly arranged, the upper end of the manual driving component is connected at the corresponding end face of the nut piece after being reversed by reverser and being horizontally shaped.The manual driving component of the present blood collection tube premixing mechanism opens up a new control mode by means of the ingenious combination of steel wire rope, reversing wheel and pedal ring.Nurses convert vertical force into horizontal screw driving force of nut piece by the coordinated operation of steel wire rope and reverser through pedaling action, realize the composite motion of blood collection tube translation and rotation.This innovative motion transmission mode significantly improves the premixing effect of blood sample.

Description

Technical Field

[0001] This invention relates to the field of blood collection tube premixing technology, and in particular to a blood collection tube premixing mechanism and a blood collection table having the mechanism. Background Technology

[0002] In modern medical testing procedures, the pretreatment of blood collection tube samples plays a crucial role in the accuracy of test results. After blood sample collection, it is necessary to mix the blood with the additives (such as anticoagulants and clotting agents) inside the blood collection tube as soon as possible to maintain sample stability and ensure the reliability of subsequent test indicators.

[0003] Traditional methods often rely on nurses manually shaking the blood collection tubes, which has several drawbacks. Firstly, manual operation makes it difficult to ensure consistency in the force, frequency, and duration of shaking each time, leading to inconsistent sample mixing and affecting the repeatability and accuracy of the test results.

[0004] For example, in a routine blood test, if the blood and anticoagulant are not mixed sufficiently, blood cells may aggregate, interfering with blood cell counting and morphological observation.

[0005] On the other hand, in the busy blood collection work in the hospital, nurses manually shaking the blood collection tubes is inefficient and consumes a lot of manpower and time. Especially during large-scale physical examinations or peak emergency periods, it can easily cause sample processing backlog and delay diagnosis and treatment.

[0006] There are some devices on the market for processing blood collection tubes, but most of them only focus on the delivery function of the blood collection tubes.

[0007] For example, the blood collection tube delivery mechanism disclosed in patent document CN212173432U is mainly dedicated to solving the problem of stable delivery of blood collection tubes during the delivery process, avoiding situations such as misdelivery, overdelivery, or underdelivery. It achieves orderly delivery of blood collection tubes by setting up a material separation mechanism and a material feeding mechanism, and by utilizing the specific structure of the channel partition.

[0008] However, the patent does not cover the premixing of blood collection tube samples, which fails to meet the clinical need for rapid and uniform mixing of blood samples after blood collection.

[0009] While some devices possess sample mixing capabilities, they are electrically powered, resulting in high energy consumption, large device size, and the need for specialized power supply adaptations. This makes them difficult to widely apply in remote temporary medical sites and emergency situations. Therefore, developing an efficient, convenient, and energy-saving premixing mechanism for blood collection tubes and a blood collection table incorporating this mechanism has become an urgent technical challenge. Summary of the Invention

[0010] To solve one of the above-mentioned technical problems, the present invention adopts the following technical solution: a blood collection tube premixing mechanism, comprising a fixedly arranged spiral pair, both ends of which are fixedly arranged, at least one collector is detachably installed on the outer wall of the nut of the spiral pair, at least one manually driven component is installed below the nut, the manually driven component is suspended below, and the upper end of the manually driven component is horizontally connected to the corresponding end face of the nut after being reversed by a reversing device.

[0011] Based on any of the above technical solutions, a further optimization is made: the helical pair is horizontally arranged and the nut on it performs a reciprocating helical motion in the horizontal direction.

[0012] Based on any of the above technical solutions, a further optimization is made as follows: the helical pair includes a horizontally arranged threaded rod, both ends of which are fixedly arranged, and the nut is threaded onto the outer wall of the threaded rod. The thread angle of the thread that mates with the nut is between 25° and 45° and includes the endpoint value.

[0013] Based on any of the above technical solutions, a further optimization is made as follows: the collector includes a plastic box, with several elastic collection chambers spaced apart on the top of the plastic box. Blood collection tubes are securely inserted into the corresponding elastic collection chambers, ensuring relative stability during premixing. The middle of one side wall of the plastic box is detachably fixed to the corresponding plane of the nut. The blood collection tubes inserted into the elastic collection chambers are held tightly, preventing them from being thrown out during premixing, thus ensuring both the effectiveness and safety of the premixing process.

[0014] Based on any of the above technical solutions, a further optimization is made as follows: the nut component includes a displacement nut that is helically fitted on the outer side wall of the threaded rod, the inner side wall of the inner cavity of the displacement nut is provided with an internal thread, a stepped annular groove is provided at the end face of at least one end of the displacement nut, and a pull tube that is movably sleeved on the outer side of the threaded rod is provided on one side of the displacement nut, the end of the pull tube being movably fitted into the interior of the stepped annular groove through a stepped shaft tube and the two being able to rotate relative to each other.

[0015] Based on any of the above technical solutions, a further optimization is made as follows: a stepped annular groove is provided at the end faces of both ends of the displacement nut, and a pull tube is provided on both sides of the displacement nut, which is movably sleeved on the outside of the threaded rod. The ends of the two pull tubes are respectively inserted into the stepped annular grooves at their corresponding positions through a stepped shaft tube, and the two can rotate relative to each other.

[0016] Based on any of the above technical solutions, a further optimization is made as follows: a round magnet block is fixedly installed in the blind hole of each outer side wall plane of the displacement nut, and the round magnet block is used to magnetically connect with the square iron plate fixed to the center of the back of the plastic box at the corresponding position; the back of the plastic box abuts against the side wall plane of the displacement nut.

[0017] Based on any of the above technical solutions, a further optimization is made as follows: the commutator includes a stand fixed to the end of the threaded rod, a commutator wheel is provided on the inner side of the stand, the two ends of the central wheel shaft of the commutator wheel are respectively movably sleeved on the corresponding connecting lugs, and the outer ends of each connecting lug are fixed on the inner side wall of the stand.

[0018] Based on any of the above technical solutions, a further optimization is made as follows: the human-powered drive component includes a steel wire rope, the upper part of which is horizontally arranged and the inner end is fixed on the pull tube of the corresponding nut component. The steel wire rope is used to horizontally pull the pull tube to move horizontally. The outer end of the steel wire rope passes around the commutator wheel and is set vertically downward. A foot ring is fixedly installed at the bottom of the steel wire rope.

[0019] The present invention also provides a blood collection table with a premixing mechanism for blood collection tubes, including the premixing mechanism for blood collection tubes as described above, and a horizontally arranged tabletop. The bottom of the tabletop is fixedly supported on the ground by legs. A central blood collection section is provided in the middle of the tabletop, and side blood collection sections are respectively provided on both sides of the central blood collection section. The bottom of the spiral pair of the premixing mechanism for blood collection tubes is fixedly installed on the top of the tabletop, and the space below the spiral pair forms the central blood collection section for the patient's arm to rest.

[0020] The lower end of each of the steel wire ropes moves through the through hole on the table and extends below it. A return spring is sleeved on the outer wall of the steel wire rope between the foot ring and the table. The top of the return spring abuts against the bottom of the table and the bottom abuts against the top of the foot ring.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. Traditional blood collection tube premixing equipment mostly uses motor drive, and the motion control is relatively simple. However, the human-driven component of this blood collection tube premixing mechanism opens up a new control mode by using a clever combination of steel wire rope, reversing wheel and pedal ring.

[0023] By stepping on the tube, the nurse, through the coordinated operation of the steel cable and the reversing device, converts the vertical force into a horizontal helical driving force of the nut, achieving a combined motion of translation and rotation of the blood collection tube. This innovative motion transmission method breaks the limitations of conventional driving methods, giving the blood collection tube a unique motion trajectory during the premixing process and significantly improving the premixing effect of blood samples.

[0024] 2. This device is manually operated; nurses can simply step on it to keep the premixing unit of the blood collection tube running continuously. Furthermore, the convenience and flexibility of manual operation are fully demonstrated in the confined space of a blood collection vehicle. Compared to larger electric equipment, it occupies less space and is easier to operate.

[0025] 3. During the procedure, nurses can precisely and in real-time adjust the premixing level of the blood collection tubes by sensing the pressure and frequency of their foot movements. This intuitive control method gives nurses greater operational autonomy, allowing them to flexibly adjust premixing parameters according to the characteristics of different samples and testing requirements. Compared with traditional pre-programmed electric equipment, this design achieves deep human-machine collaboration, significantly improving the professionalism and precision of blood collection work.

[0026] 4. From a cost-effectiveness perspective, this manually driven component brings unexpected value. On the one hand, its simple structure, mainly composed of a steel wire rope, a reversing wheel, and a pedal ring, significantly reduces the manufacturing and maintenance costs of the equipment. On the other hand, it requires no electricity; furthermore, this design significantly improves work efficiency, allowing nurses to complete the pre-mixing of a large number of blood collection tubes in a short time, reducing patient waiting time and indirectly improving the service quality and operational efficiency of medical institutions. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, the elements or components are not necessarily drawn to scale.

[0028] Figure 1 This is a schematic diagram of the premixing mechanism for blood collection tubes according to Embodiment 1 of the present invention.

[0029] Figure 2 This is a three-dimensional structural diagram of the blood collection table in Embodiment 1 of the present invention from a first-view perspective.

[0030] Figure 3 This is a two-dimensional structural schematic diagram of the blood collection table of Embodiment 1 of the present invention from a second perspective.

[0031] Figure 4This is a schematic diagram of the premixing mechanism for blood collection tubes according to Embodiment 2 of the present invention.

[0032] Figure 5 This is a three-dimensional structural diagram of the blood collection table in Embodiment 2 of the present invention from a first-view perspective.

[0033] Figure 6 This is a partial three-dimensional structural schematic diagram of the blood collection table in Embodiment 2 of the present invention from a second perspective.

[0034] Figure 7 This is a side view of the blood collection table according to Embodiment 2 of the present invention.

[0035] Figure 8 This is a partial front view schematic diagram of the blood collection table according to Embodiment 2 of the present invention.

[0036] Figure 9 This is a structural schematic diagram of the connection part of the stepped shaft tube and the stepped annular groove of the present invention.

[0037] Figure 10 This is a three-dimensional structural diagram of the collector of the present invention.

[0038] In the diagram: 1. Threaded rod; 2. Plastic box; 3. Elastic collection chamber; 4. Displacement nut; 5. Pull-out tube; 6. Stepped shaft tube; 7. Stepped annular groove; 8. Storage table; 9. Central blood collection section; 10. Side blood collection section; 11. Round magnet block; 12. Square iron plate; 13. Stand; 14. Reversing wheel; 15. Connecting ear seat; 16. Steel wire rope; 17. Step ring; 18. Return spring. Detailed Implementation

[0039] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore merely examples and should not be used to limit the scope of protection of the present invention. The specific structure of the present invention is as follows: Figures 1-10 As shown in the image.

[0040] Example 1: A blood collection tube premixing mechanism includes a fixedly arranged spiral pair, both ends of which are fixedly arranged. At least one collector is detachably installed on the outer wall of the nut of the spiral pair. At least one manually driven component is installed below the nut. The manually driven component is suspended below and its upper end is horizontally connected to the corresponding end face of the nut after being reversed by a reversing device.

[0041] The collector can be detachably installed on the outer wall of the nut of the screw assembly, which allows nurses to quickly and easily fix the collector containing the blood collection tubes to the nut and facilitates disassembly after premixing. This detachable design shortens the installation and removal time of the collector, improves work efficiency, and also facilitates cleaning, disinfection, or replacement of the collector.

[0042] When the manually driven component operates, the power is converted into horizontal tension via a commutator and transmitted to the nut component, causing the nut component to perform a horizontal reciprocating helical motion on the screw pair. This motion of the nut component drives the blood collection tube collector and the blood collection tubes inside to rotate, achieving premixing of the blood within the blood collection tubes.

[0043] Because the manually driven components allow nurses to control the rotation speed and approximate number of turns of the nut by adjusting the force and amplitude according to different examination items, premixing can be achieved on demand, ensuring the targeted and accurate nature of the premixing effect.

[0044] The manually operated components require no electricity, reducing the equipment's dependence on power sources and lowering both purchase and operating costs. Furthermore, due to their relatively simple structure, maintenance costs are also lower.

[0045] Based on any of the above technical solutions, a further optimization is made: the helical pair is horizontally arranged and the nut on it performs a reciprocating helical motion in the horizontal direction.

[0046] Based on any of the above technical solutions, a further optimization is made as follows: the helical pair includes a horizontally arranged threaded rod 1, both ends of the threaded rod 1 are fixedly arranged, and the nut is threadedly engaged on the outer side wall of the threaded rod 1. The thread angle of the thread that mates with the nut is between 25° and 45° and includes the endpoint value.

[0047] The 25°-45° thread angle allows the horizontal tension of the manually driven component, converted by the commutator, to be more efficiently transformed into the rotational force of the nut. In daily work, nurses only need to apply a small amount of tension to make the nut rotate the blood collection tube container, thus premixing the blood. During peak blood collection periods, when a large number of blood collection tubes need to be processed, this significantly reduces the workload of nurses, enabling them to perform the premixing of blood collection tubes more efficiently.

[0048] In addition, when using manually driven components for premixed blood collection tubes, there are the following characteristics that make it difficult for electrically driven equipment to respond quickly:

[0049] First, nurses can adjust the rotation speed of the nut by flexibly changing the force and rhythm of pedaling the manually driven component, based on past experience and the specific requirements of different testing items. Different blood samples have varying viscosity and composition, and their premixing requirements also differ; this manual pedaling method allows nurses to flexibly adjust the pedaling force and frequency according to the actual situation to meet diverse premixing needs. In contrast, with electrically driven equipment, once the parameters are set, the adjustment process is relatively cumbersome, making it difficult to achieve such real-time and precise dynamic adjustment.

[0050] Secondly, in some remote areas where manual blood donation or emergency rescue operations are conducted, the power supply is often unstable or even nonexistent. In such cases, the premixed blood collection tube method driven by foot pedals has a clear advantage.

[0051] Third, blood collection often requires coordination with other procedures. The manually operated pedal-driven mechanism frees nurses' hands during the procedure, allowing them to simultaneously perform tasks such as sample recording and tube preparation. This multitasking approach significantly improves overall efficiency. In contrast, operating electrically powered equipment typically requires both hands, limiting nurses' other actions during the process.

[0052] Fourth, various unforeseen circumstances may arise during blood collection, such as the urgent addition of testing items, which places new demands on the premixing of blood collection tubes. Nurses using manually operated pedal-driven devices can quickly respond to these changes, adjusting the pedaling motion to alter the movement of the nut and meet the new premixing requirements. Electrically operated devices, due to limitations in their programmed settings, struggle to make effective adjustments in a short time.

[0053] After the blood collection tubes are attached, the collector can be quickly placed on the nut using a fast magnetic attachment or other detachable fixing method, resulting in short installation and removal times. The nurse simply needs to bring the collector with the blood collection tubes close to the nut; the strong magnetic force quickly and firmly attracts the two, completing the installation. For removal, simply apply appropriate external force to overcome the magnetic force to easily separate the collector from the nut. This process is simple and extremely time-efficient, significantly reducing installation and removal time and greatly improving work efficiency. Furthermore, the strong magnetic attachment ensures that the collector will not accidentally fall off during high-speed rotation, guaranteeing operational safety and stability.

[0054] Based on any of the above technical solutions, a further optimization is made as follows: the collector includes a plastic box 2, with several elastic collection cavities 3 spaced apart on the top of the plastic box 2. Blood collection tubes are securely inserted into the corresponding elastic collection cavities 3, ensuring relative stability during premixing with the elastic collection cavities 3. The middle portion of one side wall of the plastic box 2 is detachably fixed to the corresponding plane of the nut. The blood collection tubes inserted into the elastic collection cavities 3 are held tightly, ensuring they are not thrown out during premixing with rotation, thus guaranteeing the premixing effect and safety.

[0055] The elastic collection chamber 3 effectively holds the blood collection tube in place, preventing it from being thrown out during high-speed rotation. This reduces the safety risks of tube rupture and blood splatter, creating a safe working environment for nurses and preventing cross-infection and other accidents caused by accidental sample ejection. Furthermore, the plastic box 2 is detachably fixed to the nut on one side wall, allowing nurses to easily install and remove the collector. Before blood collection, the collector containing the blood collection tube can be quickly installed onto the nut; after premixing, it can be easily removed for subsequent processing, significantly saving operation time and improving work efficiency.

[0056] The top of the plastic box 2 is equipped with multiple elastic collection chambers 3 at intervals, which can accommodate multiple blood collection tubes at the same time. When the nut drives the collector to rotate, multiple blood collection tubes are premixed simultaneously, which greatly improves the premixing efficiency and meets the needs of batch blood sample processing. It is especially suitable for scenarios with large sample volumes, such as large hospitals and physical examination centers.

[0057] Based on any of the above technical solutions, a further optimization is made as follows: the nut component includes a displacement nut 4 that is helically fitted on the outer side wall of the threaded rod 1. The inner side wall of the inner cavity of the displacement nut 4 is provided with an internal thread. A stepped annular groove 7 is provided at the end face of at least one end of the displacement nut 4. A pull tube 5 that is movably sleeved on the outer side of the threaded rod 1 is provided on one side of the displacement nut 4. The end of the pull tube 5 is movably fitted into the interior of the stepped annular groove 7 through a stepped shaft tube 6, and the two can rotate relative to each other.

[0058] When the pull tube 5 is pulled horizontally, it can move the displacement nut 4 along with it. At this time, the displacement nut 4 moves and rotates at the same time. Due to the movable fit between the stepped shaft tube 6 and the stepped annular groove 7, the spiral motion of the moving nut will not be affected.

[0059] The displacement nut 4 is made with a butt-welded structure, which is disassembled into two relatively simple half-structures, and then welded together. This method makes the installation of the stepped shaft tube 6 and the stepped annular groove 7 simpler. The operator only needs to align the stepped shaft tube 6 of the pull tube 5 with the stepped annular groove 7 on the displacement nut 4 for installation, without having to operate in narrow or complex spaces, reducing installation difficulty, shortening installation time, and improving production efficiency.

[0060] The pull tube 5 and the displacement nut 4 are connected by a stepped shaft tube 6 and a stepped annular groove 7. When the pull tube 5 is pulled horizontally, it can drive the displacement nut 4 to move synchronously. This not only realizes the translation of the displacement nut 4, but also utilizes the helical engagement between the threaded rod 1 and the displacement nut 4 to allow the displacement nut 4 to rotate during the movement.

[0061] The present invention also provides a blood collection table with a premixing mechanism for blood collection tubes, including the aforementioned premixing mechanism for blood collection tubes, and a horizontally arranged tabletop 8. The bottom of the tabletop 8 is fixedly supported on the ground by legs. A central blood collection section 9 is provided in the middle of the tabletop 8, and a side blood collection section 10 is provided on one side of the central blood collection section 9. The bottom of the spiral pair of the premixing mechanism for blood collection tubes is fixedly installed on the top of the tabletop 8, and the space below the spiral pair forms the central blood collection section 9 for the patient's arm to rest.

[0062] The lower ends of each of the steel wire ropes 16 are movably passed through the through holes on the tabletop 8 and extend below it. A return spring 18 is sleeved on the outer wall of the steel wire rope 16 between the foot ring 17 and the tabletop 8. The top of the return spring 18 abuts against the bottom of the tabletop 8 and the bottom abuts against the top of the foot ring 17.

[0063] The design of the central blood collection section 9 and the side blood collection sections 10 can meet the needs of single-person multi-site blood collection and also facilitate simultaneous blood collection for multiple people, increasing the flexibility and applicability of blood collection. The overall structure is compact and rationally laid out, reducing the interference of surrounding equipment and components on patients during the blood collection process, allowing patients to be more relaxed during blood collection.

[0064] Example 2: Compared with Example 1, this example also includes the following technical features:

[0065] Based on any of the above technical solutions, a further optimization is made as follows: a stepped annular groove 7 is provided at the end faces of both ends of the displacement nut 4, and a pull tube 5 is provided on both sides of the displacement nut 4, which is movably sleeved on the outside of the threaded rod 1. The ends of the two pull tubes 5 are respectively inserted into the stepped annular groove 7 at their corresponding positions through a stepped shaft tube 6, and the two can rotate relative to each other.

[0066] The shift nut 4 is equipped with pull tubes 5 at both ends. Nurses can flexibly choose to drive the pull tubes 5 from the left or right side according to the actual work scenario, and quickly control the movement direction of the shift nut 4. For example, on a blood collection table with limited space, nurses can choose the more convenient side to operate according to their own position, which greatly improves the convenience of operation and reduces the difficulty of work caused by limited operating space.

[0067] During blood premixing, different tests require different rotation speeds and displacements of the blood collection tubes. Nurses simultaneously operate both sides of the pull tube 5, precisely adjusting the pulling force and speed to achieve rapid reciprocating premixing. This allows for precise control of the movement of the shift nut 4, ensuring optimal premixing of the blood within the collection tube and improving the accuracy of the test results.

[0068] During peak blood collection periods, nurses can use the two-sided pull tube 5 to operate alternately. When one side of the pull tube 5 reaches its limit, they can quickly switch to the other side to continue pulling, avoiding waiting time and greatly improving the efficiency of premixing blood collection tubes to meet the processing needs of a large number of samples.

[0069] Based on any of the above technical solutions, a further optimization is made as follows: a round magnet block 11 is fixedly installed in the blind holes of each outer side wall plane of the displacement nut 4, and the round magnet block 11 is used to magnetically connect with the square iron plate 12 fixed at the center of the back of the plastic box 2 at the corresponding position; the back of the plastic box 2 abuts against the side wall plane of the displacement nut 4.

[0070] The circular magnet 11 fixed inside the blind hole on the outer wall of the displacement nut 4 attracts the square iron plate 12 at the center of the back of the plastic box 2. When installing the collector, the nurse only needs to bring the plastic box 2 close to the displacement nut 4, and the attraction of the magnet can guide the collector to be quickly and accurately aligned, eliminating the need for complicated alignment operations, greatly saving installation time and improving work efficiency. In situations with heavy blood collection tasks, this advantage allows nurses to quickly complete the premixing preparation of blood collection tubes.

[0071] The magnetic connection allows nurses to install the collection device with one hand. In actual blood collection work, nurses sometimes need to handle multiple instruments simultaneously, and the one-handed operation feature greatly improves the convenience of the operation, making the nurse's work more relaxed and efficient.

[0072] Based on any of the above technical solutions, a further optimization is made as follows: the commutator includes a stand 13 fixed to the end of the threaded rod 1, a commutator wheel 14 is provided on the inner side of the stand 13, the two ends of the central wheel axle of the commutator wheel 14 are respectively movably sleeved on the corresponding connecting lugs 15, and the outer ends of each connecting lug 15 are fixed on the inner side wall of the stand 13.

[0073] The reversing wheel 14, with its movable connection between the central axle and the connecting lug 15, can flexibly change the direction of force transmission. When a manually driven component (such as a steel wire rope 16) drives the reversing wheel 14 to rotate, it can accurately convert the input force into a force in the required direction, driving the pull tube 5 of the nut component to move horizontally, thereby realizing the premixing and delivery of the blood collection tube.

[0074] Based on any of the above technical solutions, a further optimization is made as follows: the human-powered drive component includes a steel wire rope 16, the upper part of the steel wire rope 16 is horizontally arranged and the inner end is fixed on the pull tube 5 of the corresponding nut component, the steel wire rope 16 is used to horizontally pull the pull tube 5 to move horizontally, the outer end of the steel wire rope 16 passes around the reversing wheel 14 of the reversing device and is set vertically downward, and a foot pedal ring 17 is fixedly installed at the bottom of the steel wire rope 16.

[0075] One end of the steel wire rope 16 is fixed to the pull tube 5, and the other end passes over the reversing wheel 14 of the reversing device and connects to the foot pedal ring 17. This design uses the reversing wheel 14 to change the direction of movement of the steel wire rope 16, efficiently converting the vertical force generated by the nurse stepping on the foot pedal ring 17 into the horizontal pulling force required by the pull tube 5, driving the pull tube 5 to move the nut horizontally, realizing the premixed delivery of the blood collection tube. The entire force transmission process is simple and efficient.

[0076] The steel wire rope 16 has high strength and low flexibility loss. During the force transmission process, it can minimize energy loss and ensure that the energy generated by the nurse's footsteps is effectively applied to the pull tube 5, thereby improving the driving efficiency.

[0077] Nurses control the movement of the transfer tube 5 by stepping on the foot pedal ring 17. This method of operation conforms to human movement habits and is easier to master and implement compared to other complex methods. During long blood collection sessions, nurses can operate in a more relaxed state, reducing work fatigue. Nurses can precisely adjust the movement speed and displacement of the transfer tube 5 by controlling the force and frequency of stepping. To meet the diverse premixing requirements of different testing items, the operation can be flexibly adjusted to achieve on-demand premixing and ensure the accuracy of test results.

[0078] Compared to electric drives, manually operated components do not involve electrical equipment, avoiding safety hazards such as electrical faults and leakage, and providing a safer working environment for nurses and patients. Furthermore, the steel wire rope 16 has high strength and durability, capable of withstanding significant tensile forces, ensuring the reliability of the drive process.

[0079] Unrestricted by power supply, it can be used normally in medical points in remote areas or in temporary blood collection sites, as long as there is enough operating space, greatly improving the applicability and flexibility of the premixed delivery system for blood collection tubes.

[0080] When the workload of blood collection fluctuates greatly, the manual drive unit can flexibly adjust the operating frequency according to actual needs. It can handle the processing of a large number of samples during peak blood collection periods, and can also reasonably control the intensity of operation when the sample volume is small, so as to achieve effective utilization of resources.

[0081] The present invention also provides a blood collection table with a premixing mechanism for blood collection tubes, including the aforementioned premixing mechanism for blood collection tubes, and a horizontally arranged tabletop 8. The bottom of the tabletop 8 is fixedly supported on the ground by legs. A central blood collection section 9 is provided in the middle of the tabletop 8, and a side blood collection section 10 is provided on one side of the central blood collection section 9. The bottom of the spiral pair of the premixing mechanism for blood collection tubes is fixedly installed on the top of the tabletop 8, and the space below the spiral pair forms the central blood collection section 9 for the patient's arm to rest.

[0082] The lower ends of each of the steel wire ropes 16 are movably passed through the through holes on the tabletop 8 and extend below it. A return spring 18 is sleeved on the outer wall of the steel wire rope 16 between the foot ring 17 and the tabletop 8. The top of the return spring 18 abuts against the bottom of the tabletop 8 and the bottom abuts against the top of the foot ring 17.

[0083] The tabletop 8 is divided into a central blood collection section 9 and a side blood collection section 10, which effectively utilizes the table space and allows multiple blood collection tubes to be placed at the same time to meet different blood collection needs and improve blood collection efficiency.

[0084] The bottom of the spiral joint is fixed to the top of the tabletop 8, and the space below it serves as a patient arm placement area, making full use of the vertical space and making the overall structure more compact without wasting space.

[0085] The components of the blood collection tube premix delivery mechanism are tightly integrated with the blood collection table, allowing nurses to easily operate the foot pedal ring 17 to premix the blood collection tubes during the blood collection process without additional movement or complicated operations, saving time and effort.

[0086] The design of the central blood collection section 9 and the side blood collection sections 10 can meet the needs of single-person multi-site blood collection and also facilitate simultaneous blood collection for multiple people, increasing the flexibility and applicability of blood collection. The overall structure is compact and rationally laid out, reducing the interference of surrounding equipment and components on patients during the blood collection process, allowing patients to be more relaxed during blood collection.

[0087] Furthermore, when the nurse presses down on the foot pedal ring 17, the return spring 18 provides a counter-force, helping the foot pedal ring 17 quickly return to its initial position so the nurse can perform the next pressing operation. This saves the nurse time and effort from manual reset, improving work efficiency. Additionally, the spring force of the return spring 18 can, to some extent, counteract the weight of the foot pedal ring 17 and the steel cable 16, making it easier for the nurse to press down, especially during prolonged, high-frequency operations. This effectively reduces nurse fatigue and workload. It also prevents the foot pedal ring 17 from failing to reset promptly or from shaking or jamming during reset, ensuring the stability and smoothness of the entire operation and contributing to improved premixing effect and quality of the blood collection tubes.

[0088] Blood collection and premixing process:

[0089] Blood collection preparation and procedure: At the blood collection table, the patient places their arm in the central blood collection section 9, below the spiral joint in the middle of the tabletop 8, or in the side blood collection section 10 (which can meet the needs of single-person multi-site blood collection or multiple people blood collection at the same time). The nurse prepares the blood collection equipment, performs the blood collection procedure on the patient, and injects the collected blood into the blood collection tube.

[0090] Blood collection tube placement and collector installation: After blood collection, the nurse securely inserts the blood collection tubes one by one into the elastic collection chambers 3 at the top of the plastic box 2 of the collector. These elastic collection chambers 3 tightly hold the blood collection tubes to prevent them from being thrown out during subsequent premixing. Next, the nurse magnetically connects the plastic box 2 to the round magnet block 11 in the blind hole on the outer wall of the displacement nut 4 via the square iron plate 12 fixed at the center of its back, quickly and accurately installing the collector onto the displacement nut 4.

[0091] Premixing procedure for blood collection tubes: The nurse stands beside the blood collection table and steps on the foot pedal ring 17. The foot pedal ring 17 moves downward, driving the connected steel wire rope 16. The steel wire rope 16 passes around the reversing wheel 14 of the reversing device, converting the vertical force into a horizontal tension. This tension is transmitted to the transfer tube 5. Since the transfer tube 5 is movably inserted into the stepped annular groove 7 of the displacement nut 4 through the stepped shaft tube 6, it can drive the displacement nut 4 to move on the threaded rod 1. Because of the threaded engagement between the threaded rod 1 and the displacement nut 4, the displacement nut 4 rotates while moving, thereby driving the collector and the blood collection tubes inside to rotate, achieving premixing of the blood in the blood collection tubes. The nurse can adjust the rotation speed and approximate number of turns of the displacement nut 4 by controlling the force, amplitude, and frequency of stepping on the foot according to different examination items, achieving on-demand premixing.

[0092] Reset and Repeat Operation: When the nurse releases the foot pedal ring 17, the elastic force of the reset spring 18 causes the foot pedal ring 17 to quickly return to its initial position, preparing for the next foot pedal operation. The nurse can repeat the above premixing operation as needed to ensure that the blood in the blood collection tube is fully premixed.

[0093] Blood collection tube disassembly and subsequent processing: After premixing, the nurse applies appropriate external force to overcome the magnetic attraction and removes the plastic box 2 from the displacement nut 4, completing the disassembly of the blood collection tube. The premixed blood collection tube is then processed further, such as sent for testing.

[0094] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention. For those skilled in the art, any alternative improvements or transformations made to the implementation of the present invention fall within the protection scope of the present invention.

[0095] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A premixing mechanism for blood collection tubes, characterized in that: The device includes a fixed helical pair, both ends of which are fixedly installed. At least one collector is detachably installed on the outer wall of the nut of the helical pair. Two sets of manually driven components are installed below the nut. The manually driven components are suspended below and their upper ends are horizontally connected to the corresponding end face of the nut after being reversed by a commutator. The helical pair includes a horizontally arranged threaded rod; The nut component includes a displacement nut that is screwed onto the outer wall of the threaded rod. An internal thread is provided on the inner wall of the middle part of the inner cavity of the displacement nut. A stepped annular groove is provided at the end face of both ends of the displacement nut. Pull-out tubes that are movably sleeved on the outer side of the threaded rod are provided on both sides of the displacement nut. The ends of the two pull-out tubes are respectively movably inserted into the stepped annular grooves at their corresponding positions through stepped shaft tubes and can rotate relative to each other. The commutator includes a stand fixed to the end of the threaded rod, and a commutator wheel is provided on the inner side of the stand. The two ends of the central wheel shaft of the commutator wheel are respectively movably sleeved on the corresponding connecting lugs. The outer ends of each connecting lug are fixed to the inner side wall of the stand. The human-powered drive component includes a steel wire rope. The upper part of the steel wire rope is horizontally arranged and the inner end is fixed to the pull tube of the corresponding nut component. The steel wire rope is used to horizontally pull the pull tube to move horizontally. The outer end of the steel wire rope passes around the commutator wheel and is set vertically downward. A foot ring is fixedly installed at the bottom of the steel wire rope.

2. The blood collection tube premixing mechanism according to claim 1, characterized in that: Both ends of the threaded rod are fixedly installed, and the nut is threaded onto the outer wall of the threaded rod. The thread angle of the threaded rod and the nut is between 25° and 45° and includes the endpoint value.

3. The blood collection tube premixing mechanism according to claim 2, characterized in that: The collector includes a plastic box with several elastic collection chambers spaced apart on the top of the plastic box. The blood collection tube is securely inserted into the corresponding elastic collection chamber and can ensure that the two remain relatively stable when premixing with the elastic collection chamber. The middle part of one side wall of the plastic box is detachably fixed to the plane part corresponding to the nut.

4. A blood collection table with a premixing mechanism for blood collection tubes, characterized in that: The blood collection tube premixing mechanism as described in claim 3 further includes a horizontally arranged table, the bottom of which is fixedly supported on the ground by legs. A central blood collection section is provided in the middle of the table, and side blood collection sections are provided on both sides of the central blood collection section. The bottom of the spiral pair of the blood collection tube premixing mechanism is fixedly installed on the top of the table, and the space below the spiral pair forms the central blood collection section for the patient's arm to rest. The lower end of each of the steel wire ropes moves through the through hole on the table and extends below it. A return spring is sleeved on the outer wall of the steel wire rope between the foot ring and the table. The top of the return spring abuts against the bottom of the table and the bottom abuts against the top of the foot ring.

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