An automated device for quantitative extraction of physiological saline via puncture

Abstract

This utility model discloses an automatic puncture and quantitative extraction device for physiological saline. The device includes an internal chamber divided into two lateral cavities (Cavity 1 and Cavity 2) by partitions 1, 2, and 3. Partition 3 has multiple equidistant movable slots and corresponding syringe through-holes alternating vertically. Each movable slot penetrates a corresponding movable frame plate, and each movable frame plate is equipped with a syringe tail fin holder. Cavity 2 contains a movable valve, one end of which connects to the syringe tip, and the other end connects to a physiological saline bag. To the right of partition 1 is a movable needle holder corresponding to the syringe. A needle with a cap is engaged or disengaged between two needle holders. The syringe and valve automatically configure the physiological saline output. The syringe and capped needle are automatically engaged and secured. After the syringe and capped needle are safely closed and secured, the syringe springs back and disengages from the machine, achieving the purpose of automatically extracting a quantitative amount of liquid.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, specifically to an automatic puncture and quantitative extraction device for physiological saline. Background Technology

[0002] Indwelling intravenous catheters are a commonly used medical procedure that can alleviate prolonged pain for patients and provide more infusion routes. With the development of medical technology, the advantages of peripheral intravenous catheters have become increasingly apparent, and their application scope is expanding. Peripheral intravenous catheters require fewer venous punctures, allowing for longer insertion times, less pain for patients, high patient acceptance, and reduced workload for medical staff, making infusions more convenient and thus the preferred infusion therapy tool in clinical practice.

[0003] Currently, normal saline is widely used in clinical practice for flushing intravenous catheters before infusion, sealing them after infusion, and routine maintenance during infusion intervals. However, due to the high cost of disposable normal saline sealing solution, nurses currently manually extract saline from bags using 5ml syringes. With a large number of patients and numerous syringe extractions daily, and to ensure the extracted fluid is used within its expiration date, the extraction and expiration dates must be recorded after extraction, making management cumbersome, increasing nurses' workload and the risk of human error. Furthermore, the repeated manual punctures increase the risk of needlestick injuries and infection, raising occupational exposure risks. Moreover, the need for precise control of the extracted fluid dosage, requiring repeated needle punctures, may introduce insoluble particles, affecting the quality of the normal saline. Therefore, existing technology urgently needs improvement to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic puncture and quantitative extraction device for physiological saline, which has the advantages of automated quantitative extraction of physiological saline, reduced occupational exposure risk, improved efficiency and simplified expiration date management. To achieve the above objectives, this utility model provides the following technical solution: an automatic puncture and quantitative extraction device for physiological saline, comprising a device box, the interior of which is divided into two lateral cavities, inner cavity one and inner cavity two, by a partition one, a partition two, and a partition three. Inner cavity one is located to the left of partition one, and inner cavity two is located between partition one and partition two. Partition three has multiple equidistant movable slots one and multiple corresponding syringe through holes alternately arranged vertically. Each movable slot one penetrates a corresponding movable frame plate. Each movable frame plate is provided with a syringe tail wing holder for engaging the syringe tail wing. Inner cavity two is provided with a movable valve, one end of which is connected to the syringe head and the other end is connected to a physiological saline bag for extracting a quantitative amount of physiological saline by the syringe. On the right side of partition one, there is a movable needle clip corresponding to the syringe. A needle with a needle cap is engaged or disengaged between two needle clips for installing a needle with a needle cap onto the syringe head.

[0005] As a preferred technical solution of this utility model, the valve is engaged with the valve holder, and the rear of the valve holder is fixedly connected to the second pneumatic telescopic rod. The cylinder of the second pneumatic telescopic rod is located in the fixed cylinder, and a connecting frame is installed at the bottom of the fixed cylinder. The left side of the connecting frame is engaged with the rod of the first pneumatic telescopic rod, the cylinder of the first pneumatic telescopic rod is engaged with the movable frame, the movable frame is threadedly connected to the threaded rod, and the movable frame is slidably connected to the right side of the first partition. The top of the threaded rod passes through the equipment box and is fixedly connected to the output end of the DC motor. The connecting frame is slidably connected to the rear end of the second partition, in contact with or away from the movable frame.

[0006] By adopting the above technical solution, the docking of the valve with the syringes at different positions can be accurately controlled, avoiding liquid leakage or extraction errors caused by positional deviations. This enables the equipment to efficiently handle quantitative extraction operations of multiple syringes, significantly improving the operating efficiency per unit time while reducing the frequency of manual intervention.

[0007] As a preferred technical solution of this utility model, the inner cavity of the equipment box is provided with a support structure consisting of an inner upper frame, an inner lower rear frame, and an inner lower front frame. The front side of the inner upper frame is provided with symmetrically distributed through grooves one and two. The top of the equipment box is provided with insertion holes three, one, and two. The top of the high-pressure pump forms an upward passage through the connecting head and the lower pipe. The lower pipe passes through through groove one and insertion hole three in sequence and is connected to the saline tee interface. The interface is fixedly connected to the saline bag by a rubber plug. The valve is connected to one end of the connecting pipe. The connecting pipe passes through insertion hole one, insertion hole two, through groove two, and the right gap between the inner lower rear frame and the inner lower front frame in sequence and is connected to the rotating wheel. The rotating wheel is fixed to the inner cavity by a fixing rod. The bottom of the high-pressure pump is connected to the other end of the connecting pipe through the connecting head.

[0008] As a preferred technical solution of this utility model, the right side of the partition is provided with a movable frame with a rubber limiting plate, and the front side of the partition is provided with equally spaced syringe tip through holes; each through part is respectively equipped with a fixing plug one and a fixing plug two, and the top of the equipment box is provided with a saline filling key that is linked to the saline three-way interface.

[0009] By adopting the above technical solution, the saline filling button is a pressure-triggered switch on the top of the equipment box. The pressing action triggers the flow control of the physiological saline three-way interface, forming a single quantitative filling operation command and one-button quantitative filling control.

[0010] As a preferred technical solution of this utility model, a miniature pneumatic telescopic rod corresponding to the syringe is provided on the right side of the partition. The top of the miniature pneumatic telescopic rod is provided with a connecting block, and a double-headed pneumatic telescopic rod is provided on the connecting block. A needle clip is provided on the rod body of the double-headed pneumatic telescopic rod. A needle holder is provided on the right side of the syringe through hole. The needle holder engages with the side of the corresponding needle with a needle cap. The syringe head passes through the corresponding syringe head through hole. A needle with a needle cap is provided on the left side of the syringe.

[0011] By adopting the above technical solution, fully automated and precise docking of the capped needle with the syringe can be achieved, eliminating the risk of needle slippage during manual installation. At the same time, the closed operation process effectively isolates the operator from contact with sharp parts, significantly reducing the risk of occupational exposure.

[0012] As a preferred technical solution of this utility model, the front side of the equipment box is provided with a display control module and an operation control module; the display control module includes a horizontally arranged milliliter display screen, a count display screen, and an alarm display screen, each equipped with a corresponding switch key one, switch key two, and switch key three. Switch key one is connected to the count display screen, switch key two is connected to the chip placement rack at the top of the inner cavity two, and switch key three is connected to the alarm display screen. Each display screen is connected to the equipment box; the operation control module includes a linearly arranged power switch one, power switch two, power switch three, and power switch four, which are respectively connected to pneumatic telescopic rod one, pneumatic telescopic rod two, miniature pneumatic telescopic rod one, and miniature pneumatic telescopic rod two; the chip placement rack is connected to the equipment box, the alarm display screen, and switch key two through embedded wiring.

[0013] By adopting the above technical solution, the number of times nurses manually puncture and extract saline solution each day is effectively reduced. The chip placement and alarm display screen settings automatically generate and alert the expiration date of the sealing solution, eliminating human error.

[0014] As a preferred technical solution of this utility model, the syringe tip through holes are either in contact with or away from the sealing plate inside the inner cavity 2. The front side of the sealing plate is provided with a miniature pneumatic telescopic rod 2, which is fixed inside the equipment box. The rear part of the partition 2 is provided with a box frame, and the inside of the box frame is provided with multiple equidistant nozzles, which are connected to the pump through a pipe. The pump is provided with a switch valve and is connected to the disinfection box. The disinfection box is installed on the top of the equipment box. The left side of the box frame is provided with a filter screen, which is in contact with the valve and valve holder.

[0015] By adopting the above technical solution, the equidistant layout of the nozzle array ensures that the disinfectant evenly covers the valve surface, eliminating cleaning dead spots that may exist in traditional manual wiping.

[0016] As a preferred technical solution of this utility model, the right side of the equipment box is provided with a side door, the side door has a second movable slot corresponding to the first movable slot, and passes through the corresponding movable frame plate. The four corners on the left side of the side door are provided with locking rods, which are respectively engaged with the corresponding locking slots. Each locking slot is provided with a fixing block, which is respectively set on the left side of the side door on the equipment box. The side door is provided with a handle for engaging or disengaging the side door inside the right side of the equipment box. The front side of the equipment box is provided with a transparent front door.

[0017] By adopting the above technical solution, the transparent front-opening door provides a continuous status monitoring window, avoiding internal contamination caused by frequent opening.

[0018] As a preferred technical solution of this utility model, the second partition is provided with visual sensors in sequence on the side close to the syringe, the rear side of the third partition is provided with multiple equidistant through slots, each through slot is provided with a controller, each controller is provided with an electromagnet on the side close to the side door, the tail of the syringe tail wing holder is provided with a magnet frame, and each magnet frame is provided with a magnet on the side of the controller.

[0019] By adopting the above technical solution, the problems of low efficiency and occupational exposure caused by manual disassembly after quantitative extraction of syringes are solved, ensuring that operators can complete syringe replacement in a non-contact manner, reducing the risk of infection and improving the continuous operation capability of the equipment.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] First, by cooperating with a DC motor, pneumatic telescopic rod one, and pneumatic telescopic rod two, the valve and syringe head are connected. A high-pressure pump draws saline from the bag connected to the lower tube and introduces it into the connected syringe through the valve. After a certain amount is drawn, the milliliter display shows the result, realizing the automatic disengagement function when the syringe is full. This ensures that the operator can change the syringe without contact, reducing the risk of infection and improving the continuous operation capability of the equipment. It also effectively reduces the workload of nurses and avoids the risk of needlestick injuries and occupational exposure for medical staff from the source.

[0022] Secondly, a pump draws disinfectant liquid from the disinfection tank and disinfects the valves before each operation using multiple nozzles, avoiding the increased occupational exposure risk associated with puncture and extraction. This disinfection process ensures hygienic operation and reduces the risk of contamination.

[0023] Third, through the synergistic effect of the internal structure of the equipment box, movable valves, and automated control with visual sensors, the quantitative extraction of physiological saline and the self-disinfection function of the equipment are realized, effectively reducing manual operation steps and errors, reducing occupational exposure risks, and improving the standardization of medical operations. Attached Figure Description

[0024] Figure 1 This is a front perspective view of the present invention;

[0025] Figure 2 This is a side view of the internal structure of this utility model;

[0026] Figure 3 This is a right-side view of the present invention;

[0027] Figure 4 This is a diagram showing the internal right-side structure of this utility model;

[0028] Figure 5 This is a diagram showing the internal structure of the first and second cavities of this utility model;

[0029] Figure 6 This is a diagram showing the internal structure of the inner cavity of this utility model;

[0030] Figure 7 This is an exploded view of the structure of this utility model;

[0031] Figure 8 This is a schematic diagram of the structure of the vision sensor of this utility model;

[0032] Figure 9 This utility model Figure 8 A magnified view of part A in the diagram.

[0033] In the diagram: 1. Equipment box; 2. Inner cavity one; 3. Partition one; 4. Inner cavity two; 5. Partition two; 6. Partition three; 7. Inner upper frame; 8. Inner lower rear frame; 9. Inner lower front frame; 10. Through groove one; 11. Through groove two; 12. Lower pipe; 13. High-pressure pump; 14. Connecting top head; 15. Connecting bottom head; 16. Fixing rod; 17. Rotary wheel; 18. Fixing plug two; 19. Connecting pipeline; 20. Valve; 21. Valve holder; 22. Pneumatic telescopic rod two; 3. Fixed cylinder; 24. Connecting frame; 25. Pneumatic telescopic rod one; 26. Movable frame; 27. Threaded rod; 28. Rubber limiting plate; 29. ​​DC motor; 30. Miniature pneumatic telescopic rod one; 31. Connecting block; 32. Double-headed pneumatic telescopic rod; 33. Needle with needle cap; 34. Syringe head through hole; 35. Syringe through hole; 36. Syringe; 37. Side opening door; 38. Movable slot one; 39. Movable slot two; 40. Movable frame plate; 41. Syringe tail fin holder ; 42. Fixing block; 43. Slot; 44. Locking rod; 45. Handle; 46. Sealing plate; 47. Miniature pneumatic telescopic rod II; 48. Box frame; 49. Nozzle; 50. Filter screen; 51. Pipe; 52. Pump; 53. Switch valve; 54. Disinfection box; 55. Chip holder; 56. Saline bag; 57. Rubber stopper; 58. Saline tee interface; 59. Milliliter display screen; 60. Frequency display screen; 61. Alarm display screen; 62. Open Key 1; 63. Switch 2; 64. Switch 3; 65. Switch 4; 66. Transparent front door; 67. Fixing plug 1; 68. Switch 1; 69. Switch 2; 70. Switch 3; 71. Salt water filling button; 72. Needle holder; 73. Needle clip; 74. Socket 1; 75. Socket 2; 76. Socket 3; 77. Vision sensor; 78. Controller; 79. Electromagnet; 80. Magnet; 81. Through slot; 82. Magnet holder. Detailed Implementation

[0034] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. 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 of ordinary skill in the art without creative effort are within the protection scope of this utility model. Example 1

[0035] like Figure 1 and Figure 2 As shown, an automatic puncture and quantitative extraction device for physiological saline includes a device box 1. The interior of the device box 1 is divided into two lumens, namely, inner cavity 1 2 and inner cavity 2 4, by partition 1 3, partition 2 5 and partition 3 6. Inner cavity 1 2 is located to the left of partition 1 3, and inner cavity 2 4 is located between partition 1 3 and partition 2 5.

[0036] like Figure 7 As shown, the partition 36 has multiple equidistant movable slots 38 and multiple corresponding syringe through holes 35 alternately opened on its upper and lower sides. Each movable slot 38 penetrates the corresponding movable frame plate 40. Each movable frame plate 40 is equipped with a syringe tail fin holder 41 for engaging the tail fin of the syringe 36. Figure 6 and Figure 7 As shown, a movable valve 20 is provided inside the inner cavity 4. One end of the valve 20 is connected to the head of the syringe 36, and the other end is connected to the saline bag 56, for drawing a quantitative amount of saline solution from the syringe 36. Figure 6 and Figure 7 As shown, valve 20 is engaged with valve holder 21. A pneumatic telescopic rod 22 is fixedly connected to the rear of valve holder 21. The cylinder of pneumatic telescopic rod 22 is located in fixed cylinder 23. A connecting frame 24 is installed at the bottom of fixed cylinder 23. The left side of connecting frame 24 engages with the rod body of pneumatic telescopic rod 25. The cylinder of pneumatic telescopic rod 25 engages with movable frame 26. Movable frame 26 is threadedly connected to threaded rod 27. Movable frame 26 is slidably connected to the right side of partition 3. The top of threaded rod 27 penetrates equipment box 1 and is fixedly connected to the output end of DC motor 29. Threaded rod 27 is a mechanical device that converts rotational motion into linear motion. Specifically, it can be achieved by using a trapezoidal threaded rod and a sliding nut. Precise displacement control is achieved by driving DC motor 29. Movable frame 26 supports pneumatic telescopic rod 25 and connecting frame 24 and ensures the accuracy of the motion trajectory. When the docking position of valve 20 needs to be adjusted, DC motor 29 drives threaded rod 27 to rotate, causing movable frame 26 to move vertically to the target height. The pneumatic telescopic rod 25 pushes the connecting frame 24 to move horizontally, so that the fixed cylinder 23 and the pneumatic telescopic rod 22 reach the predetermined horizontal position. The pneumatic telescopic rod 22 then drives the valve holder 21 to perform back-and-forth telescopic movement, and finally precisely aligns the valve 20 with the head of the corresponding syringe 36.

[0037] This application can accurately control the docking status of valve 20 with syringes 36 at different positions, avoid liquid leakage or extraction error caused by position deviation, enable the equipment to efficiently handle quantitative extraction operations of multiple syringes 36, significantly improve the operating efficiency per unit time, and reduce the frequency of manual intervention.

[0038] like Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, the inner cavity 1 2 of the equipment box 1 is provided with a support structure consisting of an inner upper frame 7, an inner lower rear frame 8 and an inner lower front frame 9. The inner upper frame 7 is provided with symmetrically distributed through slots 10 and 11. The top of the equipment box 1 is provided with socket 3 76, socket 1 74 and socket 2 75.

[0039] A high-pressure pump 13 is installed inside the inner cavity 2. The top of the high-pressure pump 13 forms an upward passage through the connecting head 14 and the lower pipe 12. The lower pipe 12 passes through the through groove 10 and the insertion hole 76 in sequence and connects to the saline tee interface 58. The interface is fixedly connected to the saline bag 56 by a rubber plug 57. The valve 20 connects to one end of the connecting pipe 19. The connecting pipe 19 passes through the insertion hole 74, the insertion hole 75, the through groove 11 and the right gap between the inner lower rear frame 8 and the inner lower front frame 9 in sequence and connects to the rotating wheel 17. The rotating wheel 17 is fixed to the inner cavity 2 by a fixing rod 16. The bottom of the high-pressure pump 13 is connected to the other end of the connecting pipe 19 through the connecting head 15.

[0040] like Figure 3 , Figure 5 and Figure 7 As shown, the right side of partition 1 3 is equipped with a movable frame 26 with a rubber limiting plate 28, and the front side of partition 2 5 is equipped with equidistantly distributed syringe tip through holes 34. The rubber limiting plate 28 refers to an elastic positioning component set in the moving path of the movable frame 26. Specifically, it can be implemented using polyurethane rubber blocks. The elastic deformation buffers the impact force when the movable frame 26 moves into place, avoiding displacement deviation caused by hard collisions between components. Each through part is equipped with a fixing plug 1 67 and a fixing plug 2 18, and the top of the equipment box 1 is equipped with a saline filling key 71 that is linked to the saline three-way interface 58. The through groove 1 10 facilitates the engagement or disengagement of the lower tube 12, and the through groove 2 11 facilitates the engagement or disengagement of the connecting pipe 19. The fixing plug 2 18 fixes the lower tube 12 engaged in the through groove 1 10, and the fixing plug 1 67 fixes the connecting pipe 19 engaged in the through groove 2 11. The saline filling button 71 is a pressure-triggered switch on the top of the equipment box 1. Specifically, it can be a combination of a micro switch and a spring reset structure. By pressing the button, the flow control module of the saline three-way interface 58 is triggered. After the operator presses the saline filling button 71, the saline is controlled to enter the syringe 36 through the connecting tube 19 at a preset flow rate, forming a one-button quantitative filling control.

[0041] like Figure 5 As shown, the right side of the spacer 3 is equipped with a movable needle clip 73 corresponding to the syringe 36. A needle 33 with a needle cap is engaged or disengaged between the two needle clips 73 for attaching the needle 33 to the head of the syringe 36. The right side of the spacer 3 is also equipped with a miniature pneumatic telescopic rod 30 corresponding to the syringe 36. Each miniature pneumatic telescopic rod 30 has a connecting block 31 at its top, and each connecting block 31 has a double-headed pneumatic telescopic rod 32. Each double-headed pneumatic telescopic rod 32 has a needle clip 73 on its body. The miniature pneumatic telescopic rod 30 is an actuator that achieves linear motion driven by compressed air. Specifically, it can be implemented using a cylinder in conjunction with a solenoid valve to control the stroke. The double-headed pneumatic telescopic rod 32 is a pneumatic device with bidirectional synchronous telescopic function, specifically implemented using a cylinder structure with double piston rods, used to simultaneously control the clamping action of the needle clips 73 on both sides. Each syringe through-hole 35 has a needle holder 72 on its right side, which engages with the side of the corresponding capped needle 33. The syringe head of the syringe 36 passes through the corresponding syringe head through-hole 34, and each syringe 36 has a capped needle 33 on its left side. Compared with existing technologies, traditional manual needle installation requires nurses to operate the syringe 36 and needle with both hands, which carries the risk of connection failure due to alignment deviation. This solution enables fully automatic and precise docking of capped needles with the syringe 36, eliminating the risk of needle slippage during manual installation. Simultaneously, the closed-loop operation effectively isolates the operator from contact with sharp parts, significantly reducing occupational exposure risks. The combination of fixing the needle holder 72 and synchronous movement of the double-headed pneumatic telescopic rod 32 ensures that the needle maintains a stable posture during installation, improving installation success rate and operational efficiency.

[0042] like Figure 3 As shown, the front of the equipment box 1 is equipped with a display control module and an operation control module. The display control module includes a horizontally arranged milliliter display screen 59, a count display screen 60, and an alarm display screen 61, each configured with a corresponding switch key 1 68, switch key 2 69, and switch key 3 70. Switch key 1 68 is connected to the count display screen 60, switch key 2 69 is connected to the chip placement rack 55 at the top of the inner cavity 2 4, and switch key 3 70 is connected to the alarm display screen 61. Each display screen is connected to the equipment box 1.

[0043] The operation control module includes linearly arranged switches 62, 63, 64, and 65, which are respectively connected to pneumatic telescopic rods 25, 22, 30, and 47. Switch 62 switches pneumatic telescopic rod 25, switch 63 switches pneumatic telescopic rod 22, switch 64 switches miniature pneumatic telescopic rod 30, and switch 65 switches miniature pneumatic telescopic rod 47. The chip placement rack 55 is connected to the device box 1, the alarm display screen 61, and the switch key 69 via embedded wiring. The chip inside the chip holder 55 can print the expiration date and validity period labels of the saline solution in real time. Five minutes before the 24-hour validity period expires, the machine will alert the user via the alarm display 61, indicating impending expiration. The milliliter display 59 shows the volume of fluid drawn, and the number of draws display 60 shows the number of draws. Label printing is done in real time, and the number of prints follows the number of syringes used for saline extraction. Manual printing is also possible, allowing manual application to syringes filled with saline. Switch key 1 68 switches the number of draws, switch key 2 69 switches the label printing, and switch key 3 70 switches the timer, displaying the start time and triggering an alarm after the preset time. Current clinical procedures rely on nurses manually recording the number of draws and validity period information, requiring repeated physical record book operations and handwritten label affixing. This application effectively reduces the number of times nurses manually draw saline solution daily, streamlining the workflow. The chip placement and alarm display 61 automatically generate and alert the user to the validity period of the saline solution, eliminating human error. The real-time feedback function of the display control module reduces the need for repeated confirmation of equipment status during operation, improving work efficiency.

[0044] like Figure 1 , Figure 6 and Figure 7 As shown, the right side of the equipment box 1 is provided with a side door 37. The side door 37 has a second movable slot 39 corresponding to the first movable slot 38 and passes through the corresponding movable shelf plate 40. The four corners on the left side of the side door 37 are provided with locking rods 44, which are engaged with the corresponding locking slots 43. Each locking slot 43 is provided with a fixing block 42, which is respectively set on the equipment box 1 on the left side of the side door 37. The side door 37 is provided with a handle 45 for locking or moving the side door 37 away from the inside right side of the equipment box 1. The front side of the equipment box 1 is provided with a transparent front door 66, which provides a continuous status monitoring window to avoid internal contamination caused by frequent opening.

[0045] Manually open the side door 37, and fix the required number of syringes 36 onto the syringe 36 tail fin holder on the movable frame 26 plate. Insert the syringes into the syringe through holes 35 to await the extraction of saline. Multiple syringes 36 can be pre-loaded at one time, and multiple syringes 36 can be pushed in simultaneously for saline extraction. The valve 20 and the valve 20 holder that fixes the valve 20 extend and retract horizontally via the pneumatic telescopic rod 22. The pneumatic telescopic rod 22 is driven by the pneumatic telescopic rod 25 via the connecting frame 24 to approach multiple syringe head through holes 34, so that the valve 20 is connected to the syringe 36. The pneumatic telescopic rod 25 is equipped with a movable frame 26. The DC motor 29 drives the threaded rod 27 to rotate. The movable frame 26 on the threaded rod 27 moves vertically to the right side of the partition 3, moving the valve 20 to the corresponding syringe head through hole 34. The rubber limit plate 28 provides positioning for the movable frame 26 to move up and down to the corresponding syringe head through hole 34. After valve 20 moves to the corresponding syringe tip through-hole 34, it connects with the syringe tip 36 to be drawn from on the right side of syringe tip through-hole 34. When valve 20 connects with syringe 36, high-pressure pump 13 draws saline from saline bag 56 through lower tube 12. The saline tee port 58 of saline bag 56 connects to tubing of different diameters and connecting tubing 19. The saline flows through connecting tubing 19 and valve 20 into the connected syringe 36. After the amount is drawn, the milliliter display screen 59 displays the value. After extraction, the pneumatic telescopic rod 25 drives the valve 20 to separate from the syringe 36. Then, the miniature pneumatic telescopic rod 30 drives the double-headed pneumatic telescopic rod 32 on the connecting block 31 and the needles with caps fixed by the needle clips 73 on both sides to approach the syringe head through-hole 34. After the needles with caps pass through the corresponding syringe head through-hole 34 and are fixed to the syringe 36, the double-headed pneumatic telescopic rod 32 drives the needle clips 73 to release the needles. The needle holder 72 then stabilizes the needles by pressing against the side of the capped needles. Afterward, the valve 20 is driven by the DC motor 29 to move up and down along the threaded rod 27 to other syringe 36 positions for saline extraction. After syringe 36 is filled with saline solution, manually open the side door 37 and push the syringe 36, which is fixed by the tail fin holder on the movable frame 26, into the syringe through hole 35 to await filling. The tail fin holder of syringe 36 must lock and fix syringe 36 in place before it can align with and pass through the syringe through hole 35. Multiple syringes 36 can be pre-loaded and pushed in simultaneously for batch filling. After the vision sensor 77 detects that the syringe 36 is full of liquid, it sends a signal to the controller 78. The controller 78 energizes the electromagnet 79, and the magnet 80 on the magnet 80 holder generates a repulsive magnetic force with the electromagnet 79, causing the syringe 36 to automatically eject. For manual operation, after the syringe 36 is filled, pull open the side door 37 to remove the syringe 36. The movable frame 26 plate will simultaneously detach from the movable slot, ultimately achieving the function of automatic quantitative liquid extraction.

[0046] Workflow:

[0047] In use, medical staff manually open the side door 37 and fix the required number of syringes 36 onto the syringe 36 tail fin holder on the movable frame 26 plate, inserting them into the syringe through-hole 35 to await the extraction of saline. Multiple syringes 36 can be pre-loaded at one time, for example, five syringes 36 can be pre-loaded and pushed in simultaneously for saline extraction. The valve 20 and valve 20 holder extend and retract horizontally via the pneumatic telescopic rod 22. The pneumatic telescopic rod 22, through the connecting frame 24, is driven by the pneumatic telescopic rod 25 to approach multiple syringe head through-holes 34, connecting the valve 20 to the syringes 36. The pneumatic telescopic rod 25 has a movable frame 26. The DC motor 29 drives the threaded rod 27 to rotate. The movable frame 26 on the threaded rod 27 moves vertically to the right side of the partition 3, moving the valve 20 to the corresponding syringe head through-hole 34. The rubber limit plate 28 provides positioning for the movable frame 26 to move vertically to the corresponding syringe head through-hole 34. After valve 20 moves to the corresponding syringe tip through-hole 34, it connects with the syringe tip 36 to be drawn from on the right side of syringe tip through-hole 34. When valve 20 connects with syringe 36, high-pressure pump 13 draws saline from saline bag 56 through lower tube 12. The saline tee port 58 of saline bag 56 connects to tubing of different diameters and connecting tubing 19. The saline flows through connecting tubing 19 and valve 20 into the connected syringe 36. After the amount is drawn, the milliliter display screen 59 displays the value. After the syringe 36 finishes drawing fluid, the pneumatic telescopic rod 25 drives the valve 20 to separate from the syringe 36. Then, the pneumatic telescopic rod 25 drives the double-headed pneumatic telescopic rod 32 on the connecting block 31 and the needles with caps fixed by the needle clips 73 on both sides to approach the syringe head through-hole 34. After the needles with caps pass through the corresponding syringe head through-hole 34 and are fixed to the syringe 36, the double-headed pneumatic telescopic rod 32 drives the needle clips 73 to release the needles. The needle clamp bracket 72 stabilizes the syringe by pressing against the side of the needle with cap. Afterwards, the valve 20, driven by the DC motor 29, moves up and down along the threaded rod 27 to another syringe 36 position to draw saline solution. After the syringe 36 completes the saline solution drawing, medical staff manually open the side door 37 to remove the syringe 36. Simultaneously, the movable bracket 26 disengages from the movable slot, ultimately achieving the function of automatic quantitative fluid extraction.

[0048] Example 2

[0049] Based on Example 1, to ensure that the syringe 36 automatically detaches after being filled with physiological saline, making it convenient for medical staff to use immediately. For example... Figure 8 and Figure 9As shown, visual sensors 77 are sequentially arranged on the side of the second partition 5 closest to the syringe 36. Multiple equidistant slots 81 are provided on the rear side of the third partition 6, each slot 81 containing a controller 78. Each controller 78 has an electromagnet 79 on the side near the side door 37. A magnet frame 82 is provided at the tail of each syringe tail wing holder 41, with a magnet 80 on the side of the magnet frame 82 located near the controller 78. By combining optical detection by the visual sensors 77 with magnetic drive, the syringe 36 automatically detaches after being fully filled, eliminating manual intervention and solving the problems of low efficiency and occupational exposure caused by manual disassembly after quantitative extraction of the syringe 36. This automated detachment mechanism ensures that operators can replace the syringe 36 without contact, reducing the risk of infection and improving the continuous operation capability of the equipment.

[0050] Based on the workflow of Example 1, the syringe 36 automatically ejects. After the vision sensor 77 detects that the syringe 36 is full of liquid, it sends a signal to the controller 78. The controller 78 controls the electromagnet 79 to be energized. The magnet 80 set on the magnet 80 frame generates a repulsive magnetic force with the electromagnet 79, which causes the magnet frame 82 to drive the syringe tail wing clip 41 to automatically eject the syringe 36, thus realizing the function of automatic quantitative extraction of liquid.

[0051] Example 3

[0052] Based on Example 1 or Example 2, in order to disinfect the valve, such as Figure 6 As shown, the syringe tip through-holes 34 are either in contact with or away from the sealing plate 46 inside the inner cavity 4. A miniature pneumatic telescopic rod 47 is located on the front side of the sealing plate 46 and is fixed inside the equipment box 1. A frame 48 is located at the rear of the partition 5. Multiple equidistant nozzles 49 are installed inside the frame 48 and are connected to a pump 52 via a connecting pipe 51. The pump 52 is equipped with a switch valve 53 connected to a sterilization box 54, which is installed on top of the equipment box 1. A filter screen 50 is located on the left side of the frame 48, all contacting the valve 20 and valve holder 21. A connecting frame 24 is slidably connected to the rear end of the partition 5, either in contact with or away from the movable frame 26. The equidistantly distributed nozzle array combined with the dynamic sealing structure of the sealing plate 46 effectively blocks direct contact between the syringe 36 interface and the internal environment of the equipment, preventing liquid residue from causing bacterial growth. The equidistant arrangement of the 49 nozzle array ensures that the disinfectant evenly covers the surface of the valve 20 component, eliminating cleaning dead spots that may exist in traditional manual wiping. The dual purification function of the filter 50 avoids the risk of secondary contamination caused by repeated use of disinfectant, ensuring the continuity of disinfection effect.

[0053] Based on the workflow of Example 1 or Example 2, during disinfection, the switch valve 53 is opened, and the pump 52 draws liquid for disinfecting the valve 20 from the disinfection tank 54. The liquid is then sprayed through multiple nozzles 49. During spraying, the liquid is filtered once by the filter screen 50. The valve 20 is disinfected before each operation. At this time, the sealing plate 46 is driven by the miniature pneumatic telescopic rod 47 to block multiple syringe tip holes 34, which facilitates the disinfection of the valve 20. The sealing plate 46 is moved away from the multiple syringe tip holes 34 by the miniature pneumatic telescopic rod 47, which facilitates the engagement of the needle 33 with the needle cap with the syringe 36.

[0054] It should be noted that a method for using an automated puncture and quantitative extraction device for physiological saline includes the following steps:

[0055] S1. Manually open the side door 37, and then fix the required number of syringes 36 onto the syringe tail wing holder 41 on the movable frame plate 40. Insert them into the syringe through hole 35 and wait to draw saline. Five syringes 36 are pre-set at a time, and five syringes 36 can be pushed in at the same time to draw saline.

[0056] S2. Start the DC motor 29 to drive the threaded rod 27 to rotate. The movable bracket 26 on the threaded rod 27 will move up and down on the right side of the spacer 3, moving the valve 20 to the corresponding syringe head through hole 34.

[0057] S3. The valve holder 21 is extended and retracted back and forth by the pneumatic telescopic rod 22. The pneumatic telescopic rod 22 is driven by the pneumatic telescopic rod 25 through the installed connecting bracket 24 to approach the syringe head through hole 34. The valve 20 is connected to the syringe head 36 waiting on the right side of the syringe head through hole 34. Through the mutual force from left and right, the front part of the syringe 36 is inserted into the right interface of the valve 20.

[0058] S4. When valve 20 is connected to syringe 36, high pressure pump 13 draws saline from saline bag 56 connected to lower tube 12. Saline bag 56 has three openings of different sizes on saline tee port 58. The saline is then connected to syringe 36 via connecting tube 19 and valve 20. After the amount is drawn, milliliters are displayed on display screen 59.

[0059] S5. After the extraction is completed, the pneumatic telescopic rod 25 drives the valve 20 away from the syringe 36. Then, the micro pneumatic telescopic rod 30 drives the double-headed pneumatic telescopic rod 32 on the connecting block 31 and the needle clips 73 on both sides to bring the capped needle 33 close to the syringe head through hole 34. After the needle clips 73 on both sides hold the capped needle 33 through the corresponding syringe head through hole 34 and dock with the syringe 36, the double-headed pneumatic telescopic rod 32 drives the needle clips 73 on both sides to release the capped needle 33. The needle clip bracket 72 can fix and hold the capped needle 33 against the side for stability. Then, the valve 20 is driven by the DC motor 29 and the threaded rod 27 moves the valve 20 up and down to the position of other syringes 36 to extract saline.

[0060] S6. After the syringe 36 is filled with saline, the vision sensor 77 senses that the syringe 36 is filled with a specified amount of liquid and sends a signal to the controller 78. The controller 78 controls the electromagnet 79 to be energized. The magnetic force of the electromagnet 79 after being energized repels the magnet 80, so that the entire syringe 36 is automatically ejected, thereby achieving the purpose of automatically extracting a quantitative amount of liquid.

[0061] S7. During disinfection, open the switch valve 53. The pump 52 draws the disinfectant liquid from the disinfection tank 54 and sprays it through multiple nozzles 49. During spraying, the liquid is filtered once by the filter screen 50. The valve 20 is disinfected before each operation. At this time, the sealing plate 46 is driven by the miniature pneumatic telescopic rod 47 to block the multiple syringe tip holes 34, which facilitates the disinfection of the valve 20. After disinfection, the sealing plate 46 is moved away from the multiple syringe tip holes 34 by the miniature pneumatic telescopic rod 47, so that the needle with the needle cap 33 can be engaged with the syringe 36.

[0062] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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.

Claims

1. An automatic puncture and quantitative extraction device for physiological saline, comprising a device box (1), characterized in that: The interior of the equipment box (1) is divided into two cavities, namely, inner cavity one (2) and inner cavity two (4), by partition one (3), partition two (5) and partition three (6). The inner cavity one (2) is located to the left of partition one (3), and the inner cavity two (4) is located between partition one (3) and partition two (5). The partition three (6) has multiple equidistant movable slots (38) and multiple corresponding syringe through holes (35) alternately opened on the top and bottom. The movable slots (38) all penetrate the corresponding movable frame plate (40). The movable frame plate (40) is provided with a syringe tail wing holder (41) for locking the tail wing of the syringe (36). The inner cavity two (4) is provided with a movable valve (20). One end of the valve (20) is connected to the syringe (36), and the other end is connected to the saline bag (56) for the syringe (36) to draw a quantitative amount of saline. The right side of the partition one (3) is provided with a movable needle clip (73) corresponding to the syringe (36). A needle with a needle cap (33) is locked between the two needle clips (73) for installing a needle with a needle cap (33) on the head of the syringe (36).

2. The quantitative saline extraction device according to claim 1, characterized in that: The valve (20) is engaged with the valve holder (21). The rear of the valve holder (21) is fixedly connected to the second pneumatic telescopic rod (22). The cylinder of the second pneumatic telescopic rod (22) is located in the fixed cylinder (23). A connecting frame (24) is installed at the bottom of the fixed cylinder (23). The left side of the connecting frame (24) is engaged with the rod of the first pneumatic telescopic rod (25). The cylinder of the first pneumatic telescopic rod (25) is engaged with the movable frame (26). The movable frame (26) is threadedly connected to the threaded rod (27). The movable frame (26) is slidably connected to the right side of the first partition (3). The top of the threaded rod (27) passes through the equipment box (1) and is fixedly connected to the output end of the DC motor (29). The connecting frame (24) is slidably connected to the rear end of the second partition (5) and is in contact with or away from the movable frame (26).

3. The quantitative saline extraction device according to claim 1, characterized in that: The inner cavity (2) of the equipment box (1) is provided with a support structure consisting of an inner upper frame (7), an inner lower rear frame (8) and an inner lower front frame (9). The inner upper frame (7) has symmetrically distributed through slots one (10) and two through slots two (11) on its front side. The top of the equipment box (1) has three sockets (76), one socket (74) and two sockets (75). The inner cavity (2) is equipped with a high-pressure pump (13). The top of the high-pressure pump (13) forms an upward passage through the connecting head (14) and the lower pipe (12). The lower pipe (12) passes through the through groove (10) and the insertion hole (76) in sequence and is connected to the saline three-way interface (58). The interface is fixedly connected to the saline bag (56) through the rubber plug (57). The valve (20) is connected to one end of the connecting pipe (19). The connecting pipe (19) passes through the insertion hole (74), the insertion hole (75), the through groove (11) and the right side gap between the inner lower rear frame and the inner lower front frame (9) in sequence and is connected to the rotating wheel (17). The rotating wheel (17) is fixed to the inner cavity (2) by the fixing rod (16). The bottom of the high-pressure pump (13) is connected to the other end of the connecting pipe (19) through the connecting head (15).

4. The quantitative saline extraction device according to claim 3, characterized in that: The right side of the first partition (3) is provided with a movable frame (26) with a rubber limiting plate (28). The front side of the second partition (5) is provided with syringe tip through holes (34) distributed at equal intervals. Each through part is provided with a fixing plug (67) and a fixing plug (18). The top of the equipment box (1) is provided with a saline filling key (71) that is linked to the saline three-way interface (58).

5. The quantitative saline extraction device according to claim 4, characterized in that: The right side of the partition (3) is provided with a miniature pneumatic telescopic rod (30) corresponding to the syringe (36). The top of the miniature pneumatic telescopic rod (30) is provided with a connecting block (31). The connecting block (31) is provided with a double-headed pneumatic telescopic rod (32). The rod of the double-headed pneumatic telescopic rod (32) is provided with a needle clip (73). The right side of each syringe through hole (35) is provided with a needle holder (72), which engages with the side of the corresponding needle (33) with a needle cap. The head of each syringe (36) passes through the corresponding syringe head through hole (34), and the left side of each syringe (36) is provided with a needle (33) with a needle cap.

6. The quantitative saline extraction device according to claim 5, characterized in that: The front side of the equipment box (1) is provided with a display control module and an operation control module; The display control module includes a milliliter display screen (59), a count display screen (60), and an alarm display screen (61) arranged horizontally, and is respectively equipped with a corresponding switch key one (68), switch key two (69), and switch key three (70). The switch key one (68) is connected to the count display screen (60), the switch key two (69) is connected to the chip placement rack (55) at the top of the inner cavity two (4), and the switch key three (70) is connected to the alarm display screen (61). Each display screen is connected to the equipment box (1). The operation control module includes a linearly arranged switch one (62), switch two (63), switch three (64) and switch four (65), which are respectively connected to pneumatic telescopic rod one (25), pneumatic telescopic rod two (22), miniature pneumatic telescopic rod one (30) and miniature pneumatic telescopic rod two (47). The chip placement rack (55) is connected to the device box (1), the alarm display screen (61) and the switch key (69) respectively via embedded wiring.

7. The quantitative saline extraction device according to claim 4, characterized in that: The syringe tip through hole (34) is either in contact with or away from the sealing plate (46) located in the inner cavity (4). The front side of the sealing plate (46) is provided with a miniature pneumatic telescopic rod (47), which is fixed in the equipment box (1). The rear part of the partition (5) is provided with a box frame (48). The box frame (48) is provided with multiple equidistant nozzles (49), which are connected to the pump (52) through the through pipe (51). The pump (52) is provided with a switch valve (53) connected to the disinfection box (54). The disinfection box (54) is installed on the top of the equipment box (1). The left side of the box frame (48) is provided with a filter screen (50), which is in contact with the valve (20) and the valve holder (21).

8. The quantitative saline extraction device according to claim 7, characterized in that: The equipment box (1) has a side door (37) on the right side. The side door (37) has a second movable slot (39) corresponding to the first movable slot and passes through the corresponding movable shelf (40). The four corners of the left side of the side door (37) are provided with locking rods (44). The locking rods (44) engage with the corresponding slots (43). The slots (43) are provided with fixing blocks (42). The fixing blocks (42) are respectively located on the equipment box (1) on the left side of the side door (37). The side door (37) is provided with a handle (45) for engaging or disengaging the side door (37) on the right side inside the equipment box (1). The front side of the equipment box (1) is provided with a transparent front door (66).

9. The device for quantitative extraction of physiological saline according to claim 1, characterized in that: The second partition (5) is provided with visual sensors (77) in sequence on the side close to the syringe (36). The rear side of the third partition is provided with multiple equidistant through slots (81). The inside of each through slot (81) is provided with a controller (78). Each controller (78) is provided with an electromagnet (79) on the side close to the side door (37). The tail of each syringe tail wing holder (41) is provided with a magnet holder (82). Each magnet holder (82) is provided with a magnet (80) on the side of the controller (78).

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