Intravenous medication preparation waste liquid collecting device with needle stick injury preventing function

Abstract

The invention discloses an intravenous medicine preparation waste liquid collecting device with a needle stick injury preventing function, and belongs to the technical field of medical waste treatment. Non-contact fixing of an injector is achieved through the negative pressure adsorption effect of an injector fixing piece, medical staff can complete putting and recycling operation without holding the injector by hand, and direct contact with a needle head is avoided; meanwhile, through the synergistic effect of the cutting assembly, an electromagnet and an air pressure buffer, automatic cutting and separation of syringes and needles are achieved, the cut needles and syringes fall into an edge tool recycling bin in a classified mode, it is not needed to make contact with edge tools in the follow-up cleaning process, and the pain point that medical workers are prone to being punctured by needles in a traditional manual recycling mode is thoroughly solved; occupational exposure risks of medical staff are effectively reduced, occupational safety of the medical staff is guaranteed, waste liquid contact infection is avoided, and safety requirements of medical scenes are met.

Description

Technical Field

[0001] This invention relates to the field of medical waste treatment technology, and more specifically, to a collection device for intravenous medication preparation waste liquid with needlestick injury prevention function. Background Technology

[0002] In the medical field, intravenous medication preparation is a routine procedure in clinical treatment. During this process, healthcare professionals generate a significant amount of medical waste, primarily consisting of residual waste fluids and used syringes, needles, and other medical instruments. This type of medical waste possesses a degree of infectiousness and contamination; therefore, the proper and safe disposal of this waste directly impacts the occupational safety of healthcare workers and the hygiene and safety of the medical environment, making it a crucial aspect of medical quality management.

[0003] Currently, the recycling of waste fluids and sharps generated during intravenous medication preparation in clinical settings mostly adopts a separate recycling method. This involves setting up separate containers for waste fluids and sharps, with healthcare workers manually pouring waste fluids into the waste fluid container and manually placing used syringes and needles into the sharps container. This traditional recycling method has many drawbacks and safety hazards, failing to meet the safety, standardization, and convenience requirements of medical settings. First, healthcare workers directly handle sharps when manually disposing of syringes and needles, greatly increasing the risk of needlestick injuries. Used syringes and needles may carry various pathogens, and needlestick injuries can lead to infections among healthcare workers, seriously threatening their occupational safety and representing one of the main occupational exposure risks for clinical healthcare personnel. Second, the separate recycling method requires multiple recycling containers, occupying clinical operating space. Furthermore, in busy work environments, healthcare workers are prone to mixing waste fluids and sharps, leading to waste fluid contamination of the sharps container or sharps puncturing the waste fluid container, causing leakage and further contaminating the medical environment, increasing the risk of cross-infection.

[0004] Furthermore, traditional sharps recycling containers are mostly open or simply sealed, lacking effective leak-proof and odor-proof structures. Residual waste liquid on used syringes and needles can easily evaporate, producing odors and contaminating the clinical operating environment. At the same time, waste liquid may leak through container gaps, corroding surrounding equipment and increasing the workload of environmental cleanup. In addition, the design of the discharge port of traditional waste liquid recycling containers is unreasonable. When medical staff pour waste liquid in, it is easy to spill it, causing waste liquid to come into contact with the skin and causing infection risks. Moreover, after the waste liquid is recycled, it is difficult to deal with the residual waste liquid on the surface of the sharps, increasing the difficulty and cost of medical waste disposal. Summary of the Invention

[0005] The purpose of this invention is to provide a waste fluid collection device for intravenous medication preparation with needlestick injury prevention function, so as to solve the above-mentioned problems.

[0006] To achieve the above objectives, an embodiment of the present invention provides the following technical solution:

[0007] A waste fluid collection device for intravenous medication preparation with needlestick injury prevention function includes a collection box. The front end of the collection box is hinged with a matching door. A fixing frame is fixedly installed on the upper end of the collection box. An electric push rod is fixedly installed on the lower end of the fixing frame. A syringe fixing component is fixedly installed on the lower end of the electric push rod. The upper end of the collection box has a dispensing port corresponding to the syringe fixing component. A sharps collection compartment and a waste fluid collection compartment are fixedly installed from top to bottom in the inner cavity of the collection box. A waste fluid collection component corresponding to the waste fluid collection compartment is embedded in the upper end of the collection box. A support component is fixedly installed in the inner cavity of the collection box. The support component is located between the sharps collection compartment and the dispensing port. A cutting component corresponding to the support component is fixedly installed on the upper end of the sharps collection compartment.

[0008] As a further improvement of the present invention, the syringe fixing component includes a fixing cylinder, a sealing ring is fixedly installed at the lower end of the fixing cylinder, a hollow interlayer is formed inside the fixing cylinder, and multiple adsorption holes communicating with the hollow interlayer are formed on the inner wall of the fixing cylinder. Under normal conditions, the injection port is sealed by the sealing ring. During recycling, the syringe fixing component can be pulled up by an electric push rod to expose the injection port. Then the syringe can be inserted into the fixing cylinder, and the syringe is fixed by negative pressure adsorption. At this time, medical staff do not need to hold it to ensure safety. Finally, the electric push rod extends to push the syringe fixing component to reset. At this time, the syringe enters the recycling box and is completely isolated from the external environment.

[0009] As a further improvement of the present invention, an air pump is fixedly installed on the fixing frame. The air pump is connected to the hollow interlayer of the fixing cylinder through a silicone hose. The air pump forms a negative pressure adsorption effect to ensure the fixing effect of the syringe.

[0010] As a further improvement of the present invention, the waste liquid recovery assembly includes a recovery pipe, a solenoid valve is fixedly installed on the recovery pipe, a funnel is fixedly installed at the upper end of the recovery pipe, and a matching isolation cover is hinged to the upper end of the funnel. Medical personnel can pour waste liquid into the funnel through the isolation cover and then transport it to the waste liquid recovery chamber through the recovery pipe.

[0011] As a further improvement of the present invention, the sharps recovery chamber includes a chamber body, a partition fixedly installed at the inner end of the chamber body, the partition dividing the chamber body into a syringe recovery chamber and a needle recovery chamber, and a leakage screen fixedly installed at the bottom of the chamber body, so that waste liquid remaining in the syringe or needle in the chamber body can permeate into the waste liquid recovery chamber through the leakage screen.

[0012] As a further improvement of the present invention, the cutting assembly includes a pair of tracks, in which matching sliders are slidably mounted, and a push plate is fixedly mounted between the pair of sliders. A cutting blade is fixedly mounted on one end of the push plate near the support assembly. By sliding the sliders on the tracks, the push plate is pushed closer to the support assembly, and finally the cutting blade is used to cut the syringe and needle.

[0013] As a further improvement of the present invention, a permanent magnet is fixedly installed on the slider, an electromagnet is fixedly installed at the end of the track, and a pneumatic buffer is fixedly installed in the middle area of ​​the track. By using the magnetic attraction of the electromagnet to the permanent magnet, the magnetic field drives the cutting blade to obtain a larger acceleration and cutting force. The pneumatic buffer can be used to buffer the impact force.

[0014] As a further improvement of the present invention, the pneumatic buffer includes a positioning box fixedly installed on the track. An outer cylinder is fixedly installed on one end of the positioning box near the slider. A piston is slidably installed inside the outer cylinder. A connecting rod is fixedly installed between the piston and the track. A return spring is fixedly installed between the piston and the outer cylinder. The piston squeezes the gas in the outer cylinder to buffer the air, and the return spring can also further buffer the air and provide a reset function.

[0015] As a further improvement of the present invention, the support component includes a support semi-ring, an elastic airbag is embedded in the center of the inner side of the support semi-ring, and an air injection tube connected to the elastic airbag is fixedly installed on the back of the support semi-ring. The support semi-ring can provide unidirectional support for the syringe. After the cutting blade completes the cutting, the broken needle is forced to fall into the needle recovery chamber by inertia. The syringe can only fall into the syringe recovery chamber on the other side due to the obstruction of the support semi-ring. The cutting blade can use its elasticity to eject the syringe after the negative pressure adsorption effect of the syringe fixing component is removed, ensuring that it will fall into the syringe recovery chamber.

[0016] As a further improvement of the present invention, an air collecting pipe is fixedly installed on the air injection tube. The two ends of the air collecting pipe are fixedly connected to the positioning box and kept in communication. When the air pressure buffer is working, the compressed gas can be partially delivered to the elastic air bag to accumulate a large elastic potential energy, so as to ensure the ejection effect on the syringe.

[0017] Compared with the prior art, the advantages of this invention are:

[0018] (1) This device achieves contactless fixation of the syringe by using the negative pressure adsorption of the syringe fixing component. Medical staff can complete the insertion and retrieval operations without holding the syringe, avoiding direct contact with the needle. At the same time, through the synergistic effect of the cutting component, electromagnet, and pneumatic buffer, the syringe and needle are automatically cut and separated. The cut needle and syringe are classified and fall into the sharps recycling bin. There is no need to touch the sharps during subsequent cleaning. This completely solves the problem of medical staff being easily pricked by needles in the traditional manual recycling method, effectively reduces the occupational exposure risk of medical staff, ensures the occupational safety of medical staff, and avoids contact infection of waste liquid, which meets the safety requirements of the medical scene.

[0019] (2) This device separates the sharps recycling bin and the waste liquid recycling bin through the internal cavity of the recycling bin. The waste liquid is transported to the waste liquid recycling bin separately through the waste liquid recycling component. The syringes and needles are stored separately in the sharps recycling bin, so as to achieve thorough separation of waste liquid and sharps and avoid pollution caused by mixed storage. The leakage net at the bottom of the sharps recycling bin can discharge the residual waste liquid on the surface of the sharps to the waste liquid recycling bin, so as to achieve centralized treatment of residual waste liquid and avoid waste liquid accumulation and deterioration. At the same time, the recycling bin, the bin door, the syringe fixing parts and the waste liquid recycling component are all sealed, which can effectively prevent waste liquid leakage, odor diffusion and pollutant entry, avoid pollution of the medical environment, improve the standardization and environmental protection of medical waste recycling, and meet the industry standards for medical waste classification and treatment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the recycling bin of the present invention;

[0022] Figure 3 This is a schematic diagram of the waste liquid recovery component of the present invention.

[0023] Figure 4 This is a schematic diagram of the structure of the weapon recovery bin of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the fixing frame part of the present invention;

[0025] Figure 6 This is a schematic diagram of the syringe fixing component of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the cutting component and the support component of the present invention;

[0027] Figure 8 This is a schematic diagram of the disassembled structure of the pneumatic buffer of the present invention;

[0028] Figure 9This is a schematic diagram of the structure of the support component of the present invention.

[0029] Explanation of the labels in the diagram:

[0030] 1. Recycling bin; 2. Bin door; 3. Fixing frame; 4. Air pump; 5. Electric push rod; 6. Syringe fixing component; 601. Fixing cylinder; 602. Sealing ring; 603. Adsorption hole; 7. Waste liquid recycling assembly; 701. Recycling pipeline; 702. Solenoid valve; 703. Funnel; 704. Isolation cover; 8. Sharps recycling bin; 801. Bin body; 802. Partition; 803. Leakage screen; 9. Waste liquid recycling bin; 10. Cutting assembly ; 1001, Track; 1002, Slider; 1003, Push Plate; 1004, Cutting Blade; 1005, Permanent Magnet; 11, Support Assembly; 1101, Support Half Ring; 1102, Air Injection Pipe; 1103, Air Collection Pipe; 1104, Elastic Airbag; 12, Electromagnet; 13, Air Pressure Buffer; 1301, Positioning Box; 1302, Outer Cylinder; 1303, Piston; 1304, Return Spring; 1305, Connecting Rod. Detailed Implementation

[0031] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] Example 1:

[0033] Please see Figure 1 - Figure 6 A waste fluid collection device for intravenous medication preparation with needlestick injury prevention function includes a collection box 1. The front end of the collection box 1 is hinged with a matching box door 2. A fixing frame 3 is fixedly installed on the upper end of the collection box 1. An electric push rod 5 is fixedly installed on the lower end of the fixing frame 3. A syringe fixing component 6 is fixedly installed on the lower end of the electric push rod 5. The upper end of the collection box 1 has a dispensing port corresponding to the syringe fixing component 6. From top to bottom, a sharps collection chamber 8 and a waste fluid collection chamber 9 are fixedly installed in the inner cavity of the collection box 1. A waste fluid collection component 7 corresponding to the waste fluid collection chamber 9 is embedded in the upper end of the collection box 1. A support component 11 is fixedly installed in the inner cavity of the collection box 1. The support component 11 is located between the sharps collection chamber 8 and the dispensing port. A cutting component 10 corresponding to the support component 11 is fixedly installed on the upper end of the sharps collection chamber 8.

[0034] The syringe holder 6 includes a fixing cylinder 601, with a sealing ring 602 fixedly installed at the lower end of the fixing cylinder 601. A hollow interlayer is formed inside the fixing cylinder 601, and multiple adsorption holes 603 connected to the hollow interlayer are formed on the inner wall of the fixing cylinder 601. Under normal conditions, the injection port is sealed by the sealing ring 602. During recycling, the syringe holder 6 can be pulled up by the electric push rod 5 to expose the injection port. Then, the syringe can be inserted into the fixing cylinder 601, and the syringe is fixed by the negative pressure adsorption. At this time, medical staff do not need to hold it to ensure safety. Finally, the electric push rod 5 extends to push the syringe holder 6 to reset. At this time, the syringe enters the recycling box 1 and is completely isolated from the external environment.

[0035] The fixing cylinder 601 is made of medical-grade transparent plastic. The transparency allows medical personnel to observe the fixation of the syringe, ensuring that the syringe is accurately inserted and firmly adsorbed. The inner diameter of the fixing cylinder 601 is compatible with common syringe sizes, ensuring that the syringe can be inserted smoothly and fit tightly against the outer wall of the syringe, improving the adsorption effect. The length of the fixing cylinder 601 is reasonable, ensuring that the needle is completely inside the fixing cylinder 601 after the syringe is inserted, avoiding exposure and needlestick injury. The fixing cylinder 601 has a hollow interlayer, which is connected to the air pump 4 through a silicone tube, providing a channel for the transmission of negative pressure. The inner wall of the fixing cylinder 601 has multiple adsorption holes 603 that are connected to the hollow interlayer. The adsorption holes 603 are evenly distributed, ensuring that the adsorption force is evenly applied to the outer wall of the syringe, avoiding insufficient local adsorption force that could cause the syringe to fall off.

[0036] A sealing ring 602 is fixedly installed at the lower end of the fixed cylinder 601. The core function of the sealing ring 602 is to seal the dispensing port at the upper end of the recycling bin 1 after the syringe fixing component 6 is reset, preventing waste liquid vapor and odor from spreading to the outside of the recycling bin 1, and preventing external dust and pollutants from entering the recycling bin 1, thus protecting the internal environment. The sealing ring 602 is made of medical-grade silicone, which has excellent flexibility, sealing performance, and corrosion resistance. It can fit tightly to the edge of the dispensing port to ensure a good sealing effect. It is also non-toxic and odorless, meeting the safety standards for medical products. The size of the sealing ring 602 is precisely matched with the size of the dispensing port, ensuring that the dispensing port can be completely covered after the syringe fixing component 6 is reset, without any dead corners. The connection between the sealing ring 602 and the fixed cylinder 601 is an integrally molded design, which is firm and not easy to fall off, and is also easy to clean and disinfect, preventing bacterial growth.

[0037] Multiple adsorption holes 603, connected to the hollow interlayer, are formed on the inner wall of the fixed cylinder 601. The core function of the adsorption holes 603 is to transmit the negative pressure generated by the air pump 4, creating an adsorption force inside the fixed cylinder 601, thereby firmly fixing the inserted syringe. The diameter of the adsorption holes 603 is reasonable, ensuring smooth transmission of negative pressure and generating sufficient adsorption force, while preventing the outer wall of the syringe from being scratched by the adsorption holes 603. At the same time, it prevents waste liquid from entering the hollow interlayer through the adsorption holes 603, causing blockage and contamination. The adsorption holes 603 are evenly distributed on the inner wall of the fixed cylinder 601, ensuring that the adsorption force is evenly applied to all parts of the outer wall of the syringe, making the syringe fixed stably without displacement or shaking, providing stable conditions for the subsequent cutting and separation by the cutting component 10. The number of adsorption holes 603 is designed according to the length and inner diameter of the fixed cylinder 601 to ensure sufficient and uniform adsorption force, adapting to the recycling needs of syringes of different specifications.

[0038] An air pump 4 is fixedly installed on the mounting bracket 3. The air pump 4 is connected to the hollow interlayer of the mounting cylinder 601 through a silicone hose. The air pump 4 forms a negative pressure adsorption effect to ensure the fixation effect of the syringe.

[0039] The air pump 4 is a miniature medical-grade silent air pump with low operating noise, suitable for the quiet environment requirements of medical scenarios. It is also free of oil and odor, meeting the safety standards for medical supplies. The power of the air pump 4 is matched with the size of the fixed cylinder 601, which can generate stable negative pressure to ensure sufficient adsorption force. It can firmly fix the syringe without damaging the syringe due to excessive adsorption force, which facilitates subsequent cutting and separation. The air pump 4 is connected to the hollow sandwich of the fixed cylinder 601 through a silicone hose. The silicone hose has excellent flexibility, sealing and corrosion resistance. It can be bent at will and is not easily damaged. At the same time, it has good sealing performance to prevent negative pressure leakage and ensure stable adsorption effect. The length of the silicone hose is reasonable and does not affect the extension and retraction of the electric push rod 5, avoiding mutual interference.

[0040] The waste liquid recovery assembly 7 includes a recovery pipe 701, a solenoid valve 702 fixedly installed on the recovery pipe 701, a funnel 703 fixedly installed at the upper end of the recovery pipe 701, and a matching isolation cover 704 hinged to the upper end of the funnel 703. Medical personnel can pour waste liquid into the funnel 703 through the isolation cover 704, and then transport it to the waste liquid recovery chamber 9 through the recovery pipe 701.

[0041] The core function of the recycling pipe 701 is to connect the funnel 703 and the waste liquid recycling chamber 9, providing a channel for the transport of waste liquid and ensuring that the waste liquid flows smoothly and steadily into the waste liquid recycling chamber 9 without leakage or residue. The recycling pipe 701 is made of medical-grade corrosion-resistant transparent plastic tubing. The transparent material allows medical personnel to observe the transport of waste liquid and promptly detect abnormalities such as pipe blockage. At the same time, it has excellent corrosion resistance and can resist the erosion of various intravenous drug waste liquids, and is not prone to deformation, aging, or damage. The inner diameter of the recycling pipe 701 is reasonable to ensure smooth transport of waste liquid without stagnation or blockage. At the same time, the length is adapted to the height of the recycling box 1 to avoid waste liquid residue due to excessive pipe length or spillage due to excessively short pipe length. The upper end of the recycling pipe 701 is fixedly connected to the funnel 703, and the lower end extends into the waste liquid recycling chamber 9. The connection part adopts a sealing design to ensure a tight seal and prevent waste liquid leakage.

[0042] A solenoid valve 702 is fixedly installed on the recycling pipe 701. As a control component for waste liquid transportation, the solenoid valve 702's core function is to control the opening and closing of the recycling pipe 701. It opens when waste liquid is added and closes after addition, preventing the evaporation of waste liquid and the spread of odors in the waste liquid recycling chamber 9, while also preventing backflow and avoiding contamination of the funnel 703 and the external environment. The solenoid valve 702 is a medical-grade explosion-proof solenoid valve, meeting the safety requirements of medical scenarios. It operates stably, provides precise control, and can quickly open and close the pipe with a fast response speed. The material of the solenoid valve 702 has excellent corrosion resistance, resisting the erosion of waste liquid and disinfectants, and is not prone to failure. As an electrical component, the solenoid valve 702 is linked to the device's PLC control system, enabling both automated and manual control. It is easy to operate and equipped with a sealing structure to ensure a tight seal after closure, preventing waste liquid leakage.

[0043] The funnel 703 expands the receiving area of ​​waste liquid, making it easier for medical staff to pour the waste liquid generated during the preparation of intravenous medications, preventing it from spilling outside the recycling bin 1 and causing pollution and safety hazards. The funnel 703 is made of medical-grade corrosion-resistant transparent plastic, allowing medical staff to observe the pouring process and adjust the angle in time to avoid spillage. The upper opening of the funnel 703 is funnel-shaped to expand the receiving area, and the lower opening precisely connects to the recycling pipe 701, ensuring that all waste liquid flows into the recycling pipe 701 without residue. The inner wall of the funnel 703 is smoothed to reduce waste liquid residue and facilitate cleaning and disinfection, while the rounded corners prevent scratches to medical staff.

[0044] The upper end of the funnel 703 is hinged with a matching isolation cover 704. The core function of the isolation cover 704 is to seal the upper opening of the funnel 703, preventing the diffusion of odors and waste liquid vapors from the waste liquid recovery chamber 9 when no waste liquid is being added. It also prevents external dust and contaminants from entering the funnel 703 and the recovery pipe 701, thus preventing contamination and blockage. The isolation cover 704 is made of the same medical-grade transparent plastic material as the funnel 703, making it lightweight, easy to open and close, and with flexible hinges for easy opening and closing by medical personnel. The size of the isolation cover 704 precisely matches the upper opening of the funnel 703, completely covering it when closed, providing a good seal. The surface of the isolation cover 704 has a non-slip treatment for easy gripping and opening by medical personnel, and a snap-lock mechanism ensures it is securely fixed when closed, preventing accidental opening and contamination.

[0045] The sharps recovery chamber 8 includes a chamber body 801. A partition 802 is fixedly installed at the inner end of the chamber body 801. The partition 802 divides the chamber body 801 into a syringe recovery chamber and a needle recovery chamber. A leakage screen 803 is fixedly installed at the bottom of the chamber body 801. Waste liquid remaining in the syringe or needle in the chamber body 801 can permeate into the waste liquid recovery chamber 9 through the leakage screen 803.

[0046] The container 801, serving as a storage carrier for sharps, is made of medical-grade corrosion-resistant plastic material. Its structural strength is sufficient to withstand the weight and impact of the sharps inside, preventing damage. The volume of container 801 is designed based on the amount of waste generated in medical settings, ensuring it can hold a certain amount of syringes and needles, reducing cleaning frequency. The upper end of container 801 corresponds to the cutting component 10, with a pre-reserved channel for needles and syringes to fall through. A drain net 803 is fixedly installed at the lower end for easy removal of residual waste liquid. Container 801 is bolted into the inner cavity of the recycling bin 1, ensuring a secure and stable installation while facilitating disassembly and cleaning. The inner wall of container 801 is smoothed to reduce sharps residue and facilitate cleaning and disinfection.

[0047] The core function of partition 802 is to divide the compartment 801 into a syringe collection chamber and a needle collection chamber, enabling the separate storage of syringes and needles and preventing needle exposure due to mixed storage, which could lead to needlestick injuries during subsequent cleaning. It also facilitates separate centralized processing, meeting the requirements for medical waste classification and recycling. Partition 802 is made of medical-grade corrosion-resistant plastic, with sufficient structural strength, making it resistant to scratches and damage from sharp objects. The height of partition 802 is matched to the height of compartment 801, ensuring complete separation of the two collection chambers and preventing the mixing of sharp objects. The position of partition 802 precisely corresponds to the support component 11 and the cutting component 10, ensuring that cut needles and syringes fall into their respective collection chambers accurately.

[0048] The core function of the drain screen 803 is to filter and drain the waste liquid remaining in the syringe or needle inside the chamber 801, allowing the waste liquid to permeate through the drain screen 803 into the waste liquid recovery chamber 9 below, achieving complete separation of waste liquid and sharps, and preventing the waste liquid from accumulating and deteriorating in the sharps recovery chamber 8, causing pollution and odor. The drain screen 803 is made of medical-grade stainless steel. Stainless steel has excellent corrosion resistance, wear resistance, and structural strength, resisting the erosion of waste liquid and sharps, and is not prone to rust or damage. The pore size of the drain screen 803 is reasonable, ensuring smooth permeation of waste liquid while preventing small parts of the needle and syringe from falling into the waste liquid recovery chamber 9, and is not prone to clogging. The drain screen 803 is fixedly connected to the bottom of the chamber 801, with a tight and seamless connection, ensuring that all residual waste liquid can be discharged through the drain screen 803 without residue.

[0049] Example 2:

[0050] Please see Figures 7-9 Based on embodiment 1, the cutting assembly 10 includes a pair of tracks 1001, with matching sliders 1002 slidably installed in the tracks 1001. A push plate 1003 is fixedly installed between the pair of sliders 1002. A cutting blade 1004 is fixedly installed on one end of the push plate 1003 near the support assembly 11. By sliding the sliders 1002 on the tracks 1001, the push plate 1003 is pushed to move closer to the support assembly 11, and finally the cutting blade 1004 is used to cut the syringe and needle.

[0051] A permanent magnet 1005 is fixedly installed on the slider 1002, an electromagnet 12 is fixedly installed at the end of the track 1001, and a pneumatic buffer 13 is fixedly installed in the middle area of ​​the track 1001. By using the magnetic attraction of the electromagnet 12 to the permanent magnet 1005, the cutting blade 1004 is driven by the magnetic field to obtain a larger acceleration and cutting force. The pneumatic buffer 13 can be used to buffer the impact force.

[0052] The track 1001 is made of medical-grade stainless steel, possessing excellent structural strength, wear resistance, and corrosion resistance. It can withstand the friction of the slider 1002 during sliding and the impact of cutting, and is not prone to deformation, rust, or damage. The track 1001 is fixedly installed on the upper end of the sharps collection bin 8, ensuring a secure and stable installation. The length of the track 1001 is matched with the cutting stroke of the cutter 1004, ensuring that the cutter 1004 can completely cut the syringe and needle. At the same time, the groove of the track 1001 is smoothed to reduce the friction between it and the slider 1002, ensuring that the slider 1002 slides smoothly. An electromagnet 12 is fixedly installed at the end of the track 1001, and a pneumatic buffer 13 is fixedly installed in the middle area. The layout is reasonable and does not interfere with each other.

[0053] Under the magnetic attraction of electromagnet 12, a large acceleration and impact force are obtained, ensuring that the cutting blade 1004 can quickly and accurately cut the syringe and needle. The slider 1002 is made of medical-grade stainless steel, with sufficient structural strength and high wear resistance. It can withstand the friction between itself and the track 1001 and is not prone to wear or jamming. The shape of the slider 1002 is precisely matched with the groove of the track 1001, and the sliding is smooth without loosening or deviation, ensuring that the push plate 1003 and the cutting blade 1004 move smoothly. A permanent magnet 1005 is fixedly installed on the slider 1002, which cooperates with the electromagnet 12 at the end of the track 1001 to provide sliding power. At the same time, the slider 1002 is fixedly connected to the push plate 1003, and the connection is firm, ensuring that the push plate 1003 and the cutting blade 1004 can move synchronously.

[0054] The push plate 1003 is used to fix and install the cutting blade 1004, and at the same time connects the two sliders 1002 into one unit, ensuring that the two sliders 1002 slide synchronously, driving the cutting blade 1004 to move smoothly and avoiding deviation of the cutting blade 1004, thus ensuring precise cutting. The push plate 1003 is made of medical-grade stainless steel, with sufficient structural strength to withstand the impact force during cutting and is not easily deformed or damaged. The length of the push plate 1003 is adapted to the spacing of the track 1001 to ensure that the two sliders 1002 move synchronously without interfering with each other. The end of the push plate 1003 near the support component 11 is fixedly connected to the cutting blade 1004, and the connection part adopts a reinforced design to ensure that the cutting blade 1004 does not fall off or shake during cutting, thus ensuring cutting safety and effectiveness.

[0055] The pneumatic buffer 13 includes a positioning box 1301 fixedly installed on the track 1001. An outer cylinder 1302 is fixedly installed on one end of the positioning box 1301 near the slider 1002. A piston 1303 is slidably installed inside the outer cylinder 1302. A connecting rod 1305 is fixedly installed between the piston 1303 and the track 1001. A return spring 1304 is fixedly installed between the piston 1303 and the outer cylinder 1302. The piston 1303 squeezes the gas in the outer cylinder 1302 to buffer the air, and the return spring 1304 can also further buffer the air and provide a reset function.

[0056] The support assembly 11 includes a support semi-ring 1101. An elastic airbag 1104 is embedded in the center of the inner side of the support semi-ring 1101. An air injection tube 1102 connected to the elastic airbag 1104 is fixedly installed on the back of the support semi-ring 1101. The support semi-ring 1101 can provide unidirectional support for the syringe. After the cutting blade 1004 completes the cutting, the broken needle is forced to fall into the needle recovery chamber by inertia. The syringe can only fall into the syringe recovery chamber on the other side due to the blocking effect of the support semi-ring 1101. The cutting blade 1004 can use its elasticity to eject the syringe after the negative pressure adsorption effect of the syringe fixing part 6 is removed, ensuring that it will fall into the syringe recovery chamber.

[0057] An air collecting tube 1103 is fixedly installed on the air injection tube 1102. Both ends of the air collecting tube 1103 are fixedly connected to the positioning box 1301 and kept in communication. When the air pressure buffer 13 is working, the compressed gas can be delivered to the elastic air bag 1104 to accumulate a large elastic potential energy and ensure the ejection effect of the syringe.

[0058] The supporting semi-ring 1101 provides unidirectional support for the syringe, offering a stable support point to the syringe during the cutting assembly 10's cutting of the syringe and needle, preventing syringe wobbling and ensuring precise cutting. Simultaneously, after cutting, its unidirectional support structure forces the broken needle into the needle recovery chamber, while the syringe, propelled by the elastic airbag 1104, falls to the other side into the syringe recovery chamber, achieving separation. The supporting semi-ring 1101 is made of medical-grade stainless steel, possessing sufficient structural strength to withstand the cutting impact of the cutting assembly 10, while also exhibiting strong corrosion resistance, preventing rust, deformation, and damage. The curvature of the supporting semi-ring 1101 precisely matches the outer wall of the syringe, ensuring a tight fit and stable support without damaging the syringe. The installation position of the supporting semi-ring 1101 precisely corresponds to the dispensing port, the cutting assembly 10, and the partition 802, ensuring accurate separation and disposal of the cut needle and syringe.

[0059] After the cutting assembly 10 completes the cutting, the elastic airbag 1104 uses its accumulated elastic potential energy to propel the syringe towards the syringe recovery chamber, ensuring that the syringe falls smoothly into the recovery chamber and preventing it from getting stuck on the support half-ring 1101. Simultaneously, the elastic airbag 1104 provides cushioning, preventing the support half-ring 1101 from scratching the syringe's outer wall while supporting the syringe. The elastic airbag 1104 is made of medical-grade silicone, possessing excellent elasticity, sealing properties, and corrosion resistance. It can be repeatedly inflated and deflated without easily breaking, and is non-toxic and odorless, meeting medical safety standards. The size of the elastic airbag 1104 precisely matches the inner side of the support half-ring 1101, and after installation, it is not exposed, avoiding interference with the cutting assembly 10. The elastic airbag 1104 is connected to the air injection tube 1102, which receives compressed gas from the pressure buffer 13, accumulating elastic potential energy to ensure sufficient ejection effect.

[0060] The air injection tube 1102 provides a channel for the delivery of compressed gas, conveying the compressed gas generated during the buffering process of the air pressure buffer 13 to the elastic airbag 1104, causing the elastic airbag 1104 to expand and accumulate elastic potential energy, providing power for the subsequent ejection action. The air injection tube 1102 is made of medical-grade silicone tubing, which has excellent flexibility, sealing performance, and corrosion resistance. It can be bent at will and is not easily damaged. At the same time, it has good sealing performance to prevent compressed gas leakage and ensure that the elastic airbag 1104 can be smoothly inflated with gas. The two ends of the air injection tube 1102 are respectively sealed and connected to the elastic airbag 1104 and the air collection tube 1103, respectively. The connection is firm and not easy to fall off. At the same time, the length is reasonable and does not affect the normal operation of the support component 11 and the air pressure buffer 13.

[0061] The gas collecting tube 1103 collects the compressed gas generated during the buffering process of the air pressure buffer 13, and centrally transports it to the injection tube 1102, which then delivers it to the elastic airbag 1104. This achieves linkage between the air pressure buffer 13 and the elastic airbag 1104, making full use of the compressed gas during buffering, improving energy efficiency, and ensuring that the elastic airbag 1104 can accumulate sufficient elastic potential energy to guarantee the ejection effect. The gas collecting tube 1103 is made of medical-grade stainless steel, with sufficient structural strength and good sealing performance. It can withstand the pressure of compressed gas and is not prone to leakage, deformation, or damage. Both ends of the gas collecting tube 1103 are fixedly connected to the positioning box 1301 and remain connected to ensure smooth collection of the compressed gas generated by the air pressure buffer 13. At the same time, the gas collecting tube 1103 and the injection tube 1102 are sealed to ensure that all gas is delivered to the elastic airbag 1104 without leakage.

[0062] It is worth noting that the electrical components of this device include an electric push rod 5, an air pump 4, a solenoid valve 702, and an electromagnet 12. The power supply uses a medical-grade power supply system, adapted to the power supply standards of medical settings, ensuring stable voltage. It is also equipped with independent power protection devices for overload, short circuit, undervoltage, and leakage protection, effectively protecting all electrical components and preventing damage or leakage caused by abnormal power supply, thus ensuring safe operation. The power supply lines use medical-grade explosion-proof and corrosion-resistant cables, with concealed and sealed wiring to prevent corrosion from waste vapors, disinfectants, and dust, avoiding short circuits and leakage. The wiring is also reinforced to prevent damage. The device can be equipped with a backup power supply, which automatically activates in the event of a power outage, ensuring the device can complete the current recycling operation and preventing pollution and safety hazards caused by waste residue.

[0063] The control method for the electrical components employs a PLC control system with interconnected linkage. The PLC control system is electrically connected to each electrical component, enabling both automated and manual control modes. This provides convenient operation, precise control, and suitability for medical scenarios. In automated mode, medical personnel only need to start the device. The PLC control system then sequentially controls actions such as raising the electric push rod 5, activating the air pump 4 to generate negative pressure, lowering the electric push rod 5, energizing the electromagnet 12 to drive cutting, and switching the solenoid valve 702, all according to a preset program. No manual intervention is required throughout the process; medical personnel only need to dispose of syringes and waste fluid, minimizing the risk of needlestick injuries. In manual mode, medical personnel can manually control the start, stop, and operation of each electrical component via the control panel. This allows for flexible recycling operations based on actual operating conditions. The control panel displays the operating status of each component and the amount of waste stored, facilitating real-time monitoring and timely detection and handling of abnormalities. The PLC control system also features a fault alarm function. When a fault occurs in an electrical component, the control panel will issue an alarm signal and display the location of the fault, enabling rapid troubleshooting and repair by medical personnel to ensure the normal operation of the device.

[0064] Working principle:

[0065] When medical staff generate waste liquid during the preparation of intravenous medication, the waste liquid can be recycled through the waste liquid recycling component 7. The entire operation is convenient and contactless, avoiding waste liquid leakage and pollution. Medical staff manually open the isolation cover 704 at the top of the funnel 703. At this time, the PLC control system receives a signal and automatically controls the solenoid valve 702 to open, making the recycling pipe 701 connected. Then, the medical staff slowly pours the waste liquid into the funnel 703. The funnel 703 expands the receiving area to prevent the waste liquid from spilling. The waste liquid flows into the recycling pipe 701 through the funnel 703 and is steadily transported to the waste liquid recycling chamber 9 under the action of gravity, realizing the centralized storage of waste liquid. After the waste liquid is poured in, the medical staff closes the isolation cover 704. The PLC control system detects the closed signal of the isolation cover 704 and automatically controls the solenoid valve 702 to close, sealing the recycling pipe 701 and preventing the waste liquid in the waste liquid recycling chamber 9 from evaporating, spreading odors, and flowing back, thus avoiding contamination of the funnel 703 and the external environment. If manual control of waste liquid recycling is required, the medical staff can manually control the opening and closing of the solenoid valve 702 through the control panel to flexibly complete the waste liquid pouring and adapt to different usage scenarios.

[0066] When used syringes need to be recycled, the device uses the coordinated action of the electric push rod 5, the air pump 4, and the syringe holder 6 to achieve contactless fixation and transport of the syringes, eliminating the risk of needlestick injuries. When medical personnel activate the syringe recycling function, the PLC control system automatically sends a control signal to power on the electric push rod 5. The electric push rod 5 retracts, causing the syringe holder 6 to move upwards, exposing the drop-out port at the top of the recycling box 1. After the electric push rod 5 stops retracting, the PLC control system powers on the air pump 4, which then delivers negative pressure through a silicone tube to the hollow interlayer of the fixing cylinder 601, creating a stable suction force in the suction holes 603 on the inner wall of the fixing cylinder 601. At this point, medical personnel do not need to hold the syringe; they simply insert the used syringe needle-down into the fixing cylinder 601, and the suction holes 603 generate... The suction force firmly fixes the syringe, ensuring that it does not fall off or shake. Medical staff can quickly release their grip to avoid contact with the needle, eliminating the risk of needlestick injury from the source. After the syringe is fixed, the PLC control system detects that the syringe is fixed and automatically controls the air pump 4 to maintain a negative pressure state. At the same time, it controls the electric push rod 5 to extend, driving the syringe fixing part 6 and the fixed syringe to move downwards until the sealing ring 602 of the syringe fixing part 6 re-seals the delivery port. At this time, the syringe is completely inside the cavity of the recycling box 1, completely isolated from the external environment, avoiding the safety hazard caused by the exposed needle. The electric push rod 5 stops extending, waiting for the subsequent cutting and separation operation.

[0067] After the syringe is delivered to the inner cavity of the recycling bin 1, the syringe and needle are cut and separated through the coordinated action of the support component 11, the cutting component 10, and the air pressure buffer 13, and the two are sorted and stored at the same time, which further improves safety. After the electric push rod 5 stops extending, the lower end of the syringe is exactly in contact with the support half-ring 1101 of the support assembly 11. The support half-ring 1101 provides unidirectional support for the syringe, providing a stable support point for the cutting operation. The PLC control system automatically sends a control signal to control the electromagnet 12 to start. The electromagnet 12 generates a magnetic field, which generates an attraction force between the opposite magnetic poles of the permanent magnet 1005 on the slider 1002. Driven by the magnetic attraction force, the slider 1002 slides quickly along the track 1001 towards the support assembly 11. The slider 1002 drives the push plate 1003 and the cutting blade 1004 to move synchronously. The cutting blade 1004 obtains a large acceleration and cutting force. As the slider 1002 slides, the cutting blade 1004 gradually approaches the syringe, accurately aligns with the connection between the syringe and the needle, and quickly cuts off the connection between the two, realizing the separation of the syringe and the needle. The cutting process is fast and precise, and does not produce debris pollution.

[0068] As the cutting is completed, the slider 1002 impacts the connecting rod 1305, causing the connecting rod 1305 and the piston 1303 to slide along the outer cylinder 1302 towards the positioning box 1301. The piston 1303 compresses the gas inside the outer cylinder 1302, generating compressed gas. The compressed gas is transported through the positioning box 1301 to the gas collecting pipe 1103, and then through the gas injection pipe 1102 to the elastic airbag 1104, causing the elastic airbag 1104 to expand and accumulate elastic potential energy. At the same time, the piston 1303 compresses the return spring 1304, causing the return spring 1304 to undergo elastic deformation and accumulate return potential energy. The air pressure buffer 13 buffers the impact force of the slider 1002 through gas compression and the elastic deformation of the return spring 1304, preventing excessive impact force from damaging the track 1001, slider 1002, and cutting blade 1004, thus protecting the safety of each component. After cutting, the PLC control system de-energizes the electromagnet 12, the magnetic field disappears, and the reset spring 1304 releases its reset potential energy, pushing the piston 1303, connecting rod 1305, and slider 1002 to slide in the opposite direction along the track 1001. This causes the push plate 1003 and the cutting blade 1004 to reset synchronously, returning to their initial positions, ready for the next cutting operation. At the same time, the PLC control system stops the air pump 4, the negative pressure adsorption effect is released, and the elastic airbag 1104 releases its accumulated elastic potential energy, ejecting it towards the syringe recovery chamber. This pushes the syringe supported on the supporting semi-ring 1101 towards the syringe recovery chamber, ensuring that the syringe falls smoothly into the syringe recovery chamber separated by the partition 802 inside the chamber 801. The cut and separated needles, under the action of the cutting impact force and their own inertia, fall towards the needle recovery chamber, eventually falling into the needle recovery chamber inside the chamber 801. This achieves thorough classification and storage of syringes and needles, avoiding the risk of needlestick injuries during subsequent cleaning.

[0069] After syringes and needles fall into the sharps recovery chamber 8, the residual waste liquid on their surface will, under the influence of gravity, seep through the drain screen 803 at the bottom of the chamber 801 and fall into the waste liquid recovery chamber 9 below. This allows for centralized storage of the waste liquid transported by the waste liquid recovery component 7, achieving complete separation of waste liquid and sharps, preventing the waste liquid from accumulating and deteriorating in the sharps recovery chamber 8, thus avoiding pollution and odor. When medical personnel observe through the transparent part of the door 2 that the amount of syringes and needles in the sharps recovery chamber 8 has reached a preset value, or that the waste liquid in the waste liquid recovery chamber 9 has reached a preset level, the waste disposal operation can be performed. During cleaning, first turn off the main power supply of the device to ensure that the electrical components are completely de-energized and to ensure operational safety. Then, open the sealing buckle of the box door 2, turn the hinge to open the box door 2, first pull out the waste liquid recovery chamber 9, open the sealing cover of its discharge port, and discharge the internal waste liquid into the designated medical waste liquid treatment container. After discharge, clean the waste liquid recovery chamber 9, close the sealing cover and reset it. Then take out the sharps recovery chamber 8, collect the syringes and needles inside into the corresponding medical sharps treatment containers, clean the chamber body 801 and the leakage screen 803, and ensure that there is no residue or blockage. Then reset and install the sharps recovery chamber 8. After cleaning, close the box door 2, fasten the sealing buckle to ensure that the recovery box 1 is tightly sealed, and complete the waste cleaning operation.

[0070] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and not restrictive.

[0071] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A venous drug preparation waste liquid collecting device with a needle stick injury prevention function, characterized in that: The system includes a recycling bin (1), with a matching door (2) hinged to the front end of the recycling bin (1). A fixing frame (3) is fixedly installed on the upper end of the recycling bin (1). An electric push rod (5) is fixedly installed on the lower end of the fixing frame (3). A syringe fixing component (6) is fixedly installed on the lower end of the electric push rod (5). A dispensing port corresponding to the syringe fixing component (6) is opened on the upper end of the recycling bin (1). A sharps recycling chamber (8) and a waste liquid recycling chamber (9) are fixedly installed in the inner cavity of the recycling bin (1) from top to bottom. A waste liquid recycling component (7) corresponding to the waste liquid recycling chamber (9) is embedded in the upper end of the recycling bin (1). A support component (11) is fixedly installed in the inner cavity of the recycling bin (1). The support component (11) is located between the sharps recycling chamber (8) and the dispensing port. A cutting component (10) corresponding to the support component (11) is fixedly installed on the upper end of the sharps recycling chamber (8).

2. The intravenous drug preparation and waste collecting device with a needle stick injury prevention function according to claim 1, characterized in that: The syringe fixing component (6) includes a fixing cylinder (601), a sealing ring (602) is fixedly installed at the lower end of the fixing cylinder (601), a hollow interlayer is provided inside the fixing cylinder (601), and a plurality of adsorption holes (603) communicating with the hollow interlayer are provided on the inner wall of the fixing cylinder (601).

3. The intravenous drug preparation and waste collecting device with needle stick injury prevention function according to claim 2, characterized in that: An air pump (4) is fixedly installed on the fixed frame (3), and the air pump (4) is connected to the hollow interlayer of the fixed cylinder (601) through a silicone hose.

4. The intravenous medication preparation waste collection device with anti-needlestick injury function according to claim 3, characterized in that: The waste liquid recovery assembly (7) includes a recovery pipe (701), a solenoid valve (702) is fixedly installed on the recovery pipe (701), a funnel (703) is fixedly installed at the upper end of the recovery pipe (701), and a matching isolation cover (704) is hinged to the upper end of the funnel (703).

5. A waste liquid collection device for intravenous medication preparation with anti-needlestick injury function according to claim 4, characterized in that: The sharps recovery chamber (8) includes a chamber body (801), a partition (802) is fixedly installed at the inner end of the chamber body (801), the partition (802) divides the chamber body (801) into a syringe recovery chamber and a needle recovery chamber, and a leakage net (803) is fixedly installed at the bottom of the chamber body (801).

6. The intravenous medication preparation waste collection device with needlestick injury prevention function according to claim 5, characterized in that: The cutting assembly (10) includes a pair of tracks (1001), in which a matching slider (1002) is slidably installed, and a push plate (1003) is fixedly installed between the pair of sliders (1002). A cutting blade (1004) is fixedly installed on one end of the push plate (1003) near the support assembly (11).

7. A waste liquid collection device for intravenous medication preparation with anti-needlestick injury function according to claim 6, characterized in that: A permanent magnet (1005) is fixedly installed on the slider (1002), an electromagnet (12) is fixedly installed at the end of the track (1001), and a pneumatic buffer (13) is fixedly installed in the middle area of ​​the track (1001).

8. A waste liquid collection device for intravenous medication preparation with anti-needlestick injury function according to claim 7, characterized in that: The pneumatic buffer (13) includes a positioning box (1301) fixedly installed on the track (1001). An outer cylinder (1302) is fixedly installed on one end of the positioning box (1301) near the slider (1002). A piston (1303) is slidably installed inside the outer cylinder (1302). A connecting rod (1305) is fixedly installed between the piston (1303) and the track (1001). A return spring (1304) is fixedly installed between the piston (1303) and the outer cylinder (1302).

9. A waste liquid collection device for intravenous medication preparation with anti-needlestick injury function according to claim 8, characterized in that: The support assembly (11) includes a support half-ring (1101), an elastic airbag (1104) is embedded in the center of the inner side of the support half-ring (1101), and an air injection tube (1102) connected to the elastic airbag (1104) is fixedly installed on the back of the support half-ring (1101).

10. A waste liquid collection device for intravenous medication preparation with anti-needlestick injury function according to claim 9, characterized in that: An air collecting pipe (1103) is fixedly installed on the air injection pipe (1102), and both ends of the air collecting pipe (1103) are fixedly connected to the positioning box (1301) and kept in communication.

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