Liquid medicine transfer device and use method thereof

Abstract

The invention relates to a liquid medicine transfer device and a using method thereof, and relates to the technical field of liquid medicine transfer, the liquid medicine transfer device comprises a first puncture outfit, a second puncture outfit, an infusion tube, a filter and a power source, the first puncture outfit and the second puncture outfit each comprise a needle handle and a needle stem which are coaxially arranged, the second puncture outfit further comprises a needle seat integrally formed with the needle handle, and the needle seat is arranged in the needle handle. One end of a needle stem of the first puncture outfit is inserted into the needle handle, a needle stem of the second puncture outfit penetrates through the needle seat and is inserted into the needle handle, the end, away from the needle stem, of the needle handle is communicated with the infusion tube, and the power source is used for driving liquid in the infusion tube to flow between the first puncture outfit and the second puncture outfit. The filter is used for filtering liquid flowing from the power source to the second puncture outfit, a plurality of exhaust grooves are evenly formed in the outer side wall of the needle base in the circumferential direction of the filter, the exhaust grooves are formed in the axial direction of the needle base, and the outer wall of the infusion tube is sleeved with a pinch valve. The liquid medicine transfer device has the effects of adapting to different liquid medicine transfer requirements, avoiding bag expansion and guaranteeing liquid medicine cleanness.

Description

Technical Field

[0001] This application relates to the field of drug transfer technology, and in particular to a drug transfer device and its usage method. Background Technology

[0002] Currently, against the backdrop of continuous progress and development in the medical industry, drug transfer plays a crucial role in the medication preparation process. Its accuracy and safety have an undeniable impact on ensuring the effectiveness of medication and maintaining patients' health. As modern medical research continues to deepen, new diagnostic and treatment methods for various diseases are emerging, and clinical treatment needs are becoming increasingly diversified. At the same time, the rapid development of pharmaceutical technology has given rise to a large number of new drugs. These drugs differ significantly in chemical properties, physical characteristics, and usage requirements, undoubtedly posing more stringent challenges and requirements to drug transfer technology. For example, some new drugs have extremely high requirements for environmental stability; even slight carelessness during transfer can lead to drug deterioration and affect efficacy. Furthermore, some special drugs are highly corrosive or toxic, requiring drug transfer equipment to have excellent sealing and corrosion resistance to ensure the safety of operators.

[0003] Traditional drug transfer techniques primarily rely on simple hand tools and basic mechanical devices. One common method involves using a syringe for sequential extraction and injection. The operator manually inserts the syringe needle into the vial, draws a certain amount of medication, and then moves the syringe to the target container, such as a vial or pouch, to slowly inject the medication. Another common method uses basic tubing to connect the containers, utilizing the liquid's own gravity to transfer the medication. Specifically, one end of the tubing is inserted into the vial, and the other end is connected to the target container, such as a vial or pouch. The height difference between the vial and the target container allows the medication to flow naturally into the target container.

[0004] Regarding the aforementioned technologies, the use of syringes for sequential extraction and injection is complex and requires operators to maintain high concentration. Prolonged operation can easily lead to fatigue, increasing the probability of errors and causing dosage deviations that negatively impact treatment outcomes. Furthermore, inadequate sterilization of syringes during repeated use can easily cause cross-contamination of medications, posing potential health risks to patients. The method of using basic tubing to connect containers and transferring medication by gravity requires strict control over the container's position and height. If the container's placement is incorrect or the height difference is insufficient, medication transfer will be hindered, severely impacting efficiency. Additionally, traditional medication transfer methods typically use ordinary syringes without effective air vents. During medication injection, air cannot escape from the bag in time, leading to problems such as bag swelling and abnormal pressure. This not only affects the safety and effectiveness of medication transfer but may also cause the bag to rupture, resulting in medication waste and environmental pollution. Summary of the Invention

[0005] To meet different drug transfer needs, avoid bag bloating, and ensure drug cleanliness, this application provides a drug transfer device and its usage method.

[0006] In a first aspect, this application provides a drug transfer device, which adopts the following technical solution: A drug transfer device includes a first puncture device, a second puncture device, an infusion tube, a filter, and a power source. Both the first and second puncture devices include a needle handle and a needle shaft arranged coaxially. The second puncture device also includes a needle seat integrally formed with the needle handle. One end of the needle shaft of the first puncture device is inserted into the needle handle, and the needle shaft of the second puncture device passes through the needle seat and is inserted into the needle handle. The end of the needle handle away from the needle shaft is connected to the infusion tube. The power source is used to drive the liquid in the infusion tube to flow between the first and second puncture devices. The filter is used to filter the liquid flowing from the power source to the second puncture device. The outer wall of the needle seat has a plurality of venting grooves evenly distributed along its circumference. The venting grooves are opened along the axial direction of the needle seat. A clamping valve is fitted on the outer wall of the infusion tube.

[0007] By adopting the above technical solution, the first and second puncture devices employ a coaxial needle handle and needle shaft structure, facilitating connection with the infusion tubing and ensuring smooth drug delivery. The needle hub and needle handle of the second puncture device are integrally molded, ensuring structural stability. The needle shaft of the first puncture device is inserted into the needle handle, and the needle shaft of the second puncture device passes through the needle hub and is inserted into the needle handle, further enhancing the tightness of the connection and reducing the risk of drug leakage. The power source effectively drives the liquid in the infusion tubing to flow between the first and second puncture devices, realizing the transfer of drug. The filter can filter the liquid flowing from the power source to the second puncture device, improving the purity of the drug and preventing impurities from entering the target container. The clamp valve controls the opening and closing of the infusion tubing. The axial venting grooves evenly distributed circumferentially on the outer wall of the needle hub automatically open the internal and external air channels when the puncture device is inserted into the fluid bag or vial, allowing air to pass smoothly, playing a venting role, preventing the fluid bag from swelling, and ensuring the safety and stability of the drug transfer process.

[0008] Optionally, it also includes a mounting bracket, which is provided with a fixing component for fixing the needle handle. Both the power source and the clamp valve are fixedly connected to the mounting bracket. The fixing component is slidably connected to the mounting bracket along the axis of the needle handle. Two inserts are uniformly fixed on the outer wall of the needle handle in the circumferential direction. The fixing component includes a sliding seat and two sliding plates that slide towards each other on the sliding seat. One end of each of the two sliding plates is fixed with a rod for inserting into the insert.

[0009] By adopting the above technical solution, the fixing component on the mounting frame can firmly fix the needle handle, ensuring the stability of the first and second puncture devices during the drug transfer process and preventing shaking or displacement from affecting the drug transfer effect. The power source is fixedly connected to the mounting frame, making the installation of the power source more stable and able to stably drive the liquid in the infusion tube to flow between the first and second puncture devices. The fixing component can slide along the axis of the needle handle to the mounting frame, which facilitates the adjustment of the position of the first and second puncture devices so that they can be smoothly inserted into the drug bottle to be dispensed and the liquid bag to be filled. Two inserts evenly arranged circumferentially on the outer wall of the needle handle cooperate with the insert rod at the end of the slide plate in the fixing component. The insert rod is inserted into the insert, realizing the reliable fixation of the needle handle by the fixing component, further ensuring the stability and reliability of the entire drug transfer device during operation.

[0010] Optionally, the outer wall of the needle handle is uniformly fixed with a plurality of first limiting ribs along its circumference. The limiting ribs are located on the side of the insert away from the infusion tube. A socket is fixed at the end of the sliding seat near the insert rod. The part of the needle handle with the first limiting ribs is inserted into the socket.

[0011] By adopting the above technical solution, accurate installation and positioning of the needle handle on the sliding seat can be achieved, ensuring the accuracy and stability of the needle handle installation position. During subsequent drug transfer, the precision of the puncture device position can be guaranteed, avoiding inaccurate punctures due to unstable installation or positional deviations, thereby ensuring the smooth progress of the drug transfer process and improving the efficiency and safety of drug transfer. At the same time, this design makes the connection between the needle handle and the sliding seat more stable, better able to withstand the forces generated during puncture and drug flow, and extends the service life of the equipment.

[0012] Optionally, a sheath is provided on the outer side of the end of the needle shaft away from the infusion tube, and the part of the needle handle with the first limiting rib is inserted into the sheath. Several second limiting ribs corresponding one-to-one with the first limiting ribs are fixed along the circumferential direction on the inner wall of the sheath. The second limiting ribs are used to restrict the rotation of the first limiting ribs.

[0013] By adopting the above technical solution, the sheath can protect the needle shaft and prevent it from being damaged or contaminated. The second limiting rib on the inner wall of the sheath can restrict the rotation of the first limiting rib, making the connection between the sheath and the needle handle more secure. This prevents the sheath from rotating and falling off due to vibration or impact before handling, storage, or use, thus avoiding accidental detachment from the needle handle. It ensures that the needle shaft is in a safe and clean state, ensuring the reliability and safety of the drug transfer device in subsequent use.

[0014] Optionally, the needle holder has two through holes arranged along its own axis, and the through holes are formed on one of the venting grooves.

[0015] By adopting the above technical solution, the through hole on the needle holder is set on the venting groove. During the injection molding process, the venting groove and the through hole can be used to clamp and fix the needle shaft, effectively ensuring that the needle shaft will not be displaced during injection molding, which can meet the requirements of mass production.

[0016] Optionally, a multi-way valve is provided between the first puncture device and the second puncture device.

[0017] By adopting the above technical solutions, the drug transfer device can achieve one-to-many, many-to-one, or many-to-many drug transfer, which can flexibly adapt to different drug preparation needs, and can be connected to an external power source to assist in drug transfer.

[0018] Optionally, there is one first puncture device and several second puncture devices, with a multi-port valve located between one first puncture device and several second puncture devices.

[0019] By adopting the above technical solution, the medicine solution can be transferred from one container to multiple containers to meet specific medicine solution distribution needs. It can also be used in conjunction with a filter to filter the medicine solution and use a multi-way valve to connect to an external power source to achieve medicine solution transfer.

[0020] Optionally, there are several first puncture devices and several second puncture devices, and a multi-way valve is located between several first puncture devices and several second puncture devices.

[0021] By adopting the above technical solution, the function of transferring multiple medicines can be realized, which can meet the needs of transferring medicines from multiple medicine bottles to multiple liquid bags simultaneously or separately. Combined with a multi-port valve, the medicine transfer path can be flexibly adjusted.

[0022] Optionally, there are several first puncture devices and one second puncture device, with a multi-way valve located between the several first puncture devices and one second puncture device.

[0023] By adopting the above technical solution, the liquid medicine in multiple medicine bottles can be transferred simultaneously or sequentially to a liquid bag. The multi-way valve can realize the multi-to-one liquid medicine transfer mode, meet different medicine preparation needs, improve the liquid medicine transfer efficiency, and can be used with a filter to filter the liquid medicine.

[0024] Secondly, this application provides a method of using a drug transfer device, comprising the following steps: S1, Remove the sheath from the first puncture device and the second puncture device respectively; S2, the first trocar and the second trocar are fixed in place using fixing components respectively; S3, the fixing component of the first puncture device is slidably fixed so that the needle shaft of the first puncture device is inserted into the medicine bottle to be taken out; S4, the fixing component of the second puncture device is slidably fixed so that the needle shaft of the second puncture device is inserted into the liquid bag to be infused with the drug; S5, start the power source to deliver the liquid in the medicine bottle to the infusion bag through the infusion tube; S6. After the liquid in the medicine bottle is completely delivered, turn off the power source, replace it with a new medicine bottle, and turn the power source back on. Repeat this process until the liquid bag is full.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a needle holder with an exhaust groove, the internal and external air channels are automatically opened, avoiding problems such as bag swelling and abnormal pressure, thereby improving the safety and effectiveness of drug transfer; 2. The drug transfer device can be equipped with a multi-way valve to achieve various configurations such as one-to-one, one-to-many, many-to-one, and many-to-many, to meet different drug transfer needs; 3. The filter can filter the medication solution, avoiding cross-contamination between drugs and ensuring patient medication safety. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a drug transfer device.

[0027] Figure 2 This is a schematic diagram of the first puncture device.

[0028] Figure 3 This is a schematic diagram of the second puncture device.

[0029] Figure 4 yes Figure 3 Enlarged diagram of point A in the middle.

[0030] Figure 5 This is a schematic diagram of the structure of the first puncture device and the fixation assembly.

[0031] Figure 6 This is a structural diagram of the needle handle and sheath.

[0032] Figure 7 This is a schematic diagram of a structure that uses multiple power sources to achieve one-to-one transfer of the medicine.

[0033] Figure 8 This is a schematic diagram of a multi-channel peristaltic pump that enables multiple drug transfers with a single rotation.

[0034] Figure 9 This is a schematic diagram of a multi-port peristaltic pump that enables multi-rotation of the drug solution.

[0035] Figure 10 This is a schematic diagram of a multi-channel peristaltic pump that enables multiple rotations and transfers of the drug solution.

[0036] Explanation of reference numerals in the attached drawings: 1. First puncture device; 11. Needle handle; 111. Insertion tube; 112. First limiting rib; 12. Needle shaft; 13. Sheath; 131. Second limiting rib; 2. Second puncture device; 21. Needle seat; 211. Air vent; 212. Through hole; 3. Infusion tube; 4. Filter; 5. Power source; 6. Pinch valve; 7. Mounting bracket; 8. Fixing assembly; 81. Sliding seat; 82. Slide plate; 83. Insertion rod; 84. Socket; 9. Multi-port valve. Detailed Implementation

[0037] The present application will be further described in detail below with reference to all the accompanying drawings.

[0038] In a first aspect, embodiments of this application disclose a drug transfer device.

[0039] Reference Figure 1A drug transfer device includes a first puncture device 1, a second puncture device 2, an infusion tube 3, a filter 4, and a power source 5. Both the first puncture device 1 and the second puncture device 2 are connected to the infusion tube 3. The power source 5 effectively drives the flow of liquid within the infusion tube 3 between the first puncture device 1 and the second puncture device 2, achieving drug transfer. The filter 4 filters the liquid flowing from the power source 5 to the second puncture device 2, achieving effective drug transfer and filtration, improving drug purity, preventing impurities from entering the target container, avoiding liquid contamination, and improving the safety of drug transfer. The combined use of the first puncture device 1, the second puncture device 2, the infusion tube 3, the filter 4, and the power source 5 is not limited to drug dispensing machines, but can also be used in other liquid delivery devices.

[0040] Reference Figure 2 and Figure 3 Both the first puncture device 1 and the second puncture device 2 include a needle handle 11 and a needle shaft 12 arranged coaxially. The needle handle 11 is usually made of high-strength plastic, which has a certain degree of toughness and corrosion resistance, ensuring its durability. The needle shaft 12 is generally made of stainless steel, which is sharp and convenient for puncturing medicine bottles or liquid bags.

[0041] Reference Figure 2 and Figure 3 The needle shaft 12 of the first puncture device 1 is inserted into the needle handle 11. The needle shaft 12 and the needle handle 11 are integrally molded by injection molding to ensure the sealing and stability of the connection. At the same time, it avoids the possibility that the adhesive used to connect the needle shaft 12 and the needle handle 11 with the adhesive may react with the drug solution when they come into contact during drug preparation, which may lead to drug solution contamination.

[0042] Reference Figure 2 and Figure 3 The second puncture device 2 also includes a needle hub 21 integrally formed with the needle handle 11. The needle shaft 12 of the second puncture device 2 passes through the needle hub 21 and is inserted into the needle handle 11. The needle hub 21 and the needle handle 11 are manufactured using injection molding and integrally formed with the needle shaft 12, making the structure more stable. At the same time, it avoids the possibility that the adhesive used to connect the needle shaft 12 and the needle handle 11 with adhesive may react with the drug solution during drug preparation, which could lead to drug solution contamination.

[0043] Reference Figure 1 The needle handles 11 of both the first puncture device 1 and the second puncture device 2 are connected to the infusion tube 3 at the end away from the needle shaft 12. The infusion tube 3 is generally made of medical-grade soft tubing, such as silicone tubing or PVC tubing, which has good flexibility and chemical resistance.

[0044] Reference Figure 3 and Figure 4The outer wall of the needle seat 21 of the second puncture device 2 is evenly provided with several venting grooves 211 along its circumference. The venting grooves 211 are opened along the axial direction of the needle seat 21. When the second puncture device 2 is inserted into a liquid bag or vial, the venting grooves 211 can provide an air passage, balance the internal and external air pressure, prevent the bag from swelling, and ensure the safety and stability of the drug transfer process. The end of the venting groove 211 away from the needle handle 11 is through-hole, and the end of the needle seat 21 away from the needle handle 11 is chamfered. The needle shaft 12 and the needle seat 21 are smoothly transitioned, so that when the needle shaft 12 is inserted into the container, the needle seat 21 will also enter the container. The length of the venting groove 211 is greater than the height of the container, and the end of the venting groove 211 near the needle handle 11 is located on the outside of the container, thereby achieving the balance of air pressure inside and outside the container.

[0045] Reference Figure 3 and Figure 4 The needle holder 21 has two through holes 212 arranged along its own axis. The through holes 212 are opened on one of the venting grooves 211. During the injection molding process, the venting groove 211 and the through holes 212 can be used to clamp and fix the needle rod 12, effectively ensuring that the needle rod 12 will not be displaced during injection molding, which can meet the requirements of mass production.

[0046] Reference Figure 1 The medication transfer device also includes a mounting frame 7, which has a fixing component 8 for securing the needle handle 11. This ensures the stability of the first puncture device 1 and the second puncture device 2 during medication transfer, preventing shaking or displacement that could affect the transfer effect. The power source 5 is fixedly connected to the mounting frame 7, facilitating overall installation and operation, and ensuring a stable power supply from the power source 5. The fixing component 8 is slidably connected to the mounting frame 7 along the axis of the needle handle 11, allowing for easy adjustment of the positions of the first puncture device 1 and the second puncture device 2 to accommodate medication bottles and liquid bags of different heights, and to facilitate the smooth insertion or detachment of the first puncture device 1 and the second puncture device 2 into the medication bottle to be dispensed and the liquid bag to be filled with medication.

[0047] Reference Figure 2 and Figure 3Two inserts 111 are uniformly fixed along the circumference of the outer wall of the needle handle 11. The inserts 111 are generally made of plastic and are integrally molded with the needle handle 11 through injection molding. The fixing component 8 includes a sliding seat 81 and two sliding plates 82 that slide towards each other on the sliding seat 81. The sliding seat 81 is usually made of metal or plastic and has a certain strength and wear resistance. Each of the two sliding plates 82 has a rod 83 fixed at one end for insertion into the insert 111. The size of the rod 83 is adapted to the insert 111. By inserting the rod 83 into the insert 111, the fixing component 8 reliably fixes the needle handle 11, further ensuring the stability and reliability of the entire liquid transfer device during operation. The sliding plates 82 can slide on the sliding seat 81 via guide rails or grooves. By setting a bidirectional lead screw and a motor, the two sliding plates 82 slide towards each other on the sliding seat 81, thereby driving the rod 83 to move in and out of the insert 111. The inlet of the insert 111 is chamfered to facilitate the insertion of the insert rod 83 into the insert 111.

[0048] Reference Figure 1 The fixing component 8 is slidably connected to the mounting bracket 7 along the axis of the needle handle 11 by means of a linear guide or a motor screw structure to drive the sliding seat 81 to slide.

[0049] Reference Figure 1 and Figure 5 To prevent the needle handle 11 from rotating along the axis of the insertion rod 83, ensuring the accuracy of the puncture device's position and avoiding inaccurate punctures due to unstable installation or positional deviations, thereby ensuring the smooth progress of the drug transfer process and improving the efficiency and safety of drug transfer, several first limiting ribs 112 are uniformly fixed along the circumference of the outer wall of the needle handle 11. Typically, four ribs are present. The limiting ribs are located on the side of the insertion tube 111 away from the infusion tube 3. A socket 84 is fixed to the end of the sliding seat 81 near the insertion rod 83. The portion of the needle handle 11 with the first limiting ribs 112 is inserted into the socket 84. This design further enhances the fixing effect of the needle handle 11, preventing it from rotating or shaking during use. It can better withstand the forces generated during puncture and drug flow, extending the service life of the equipment. Simultaneously, the end of the first limiting rib 112 away from the needle handle 11 has a chamfer, facilitating insertion into the socket 84.

[0050] Reference Figure 6When the first puncture device 1 and the second puncture device 2 are installed on the mounting bracket 7, the needle stem 12 is covered with a sheath 13. The end of the needle stem 12 away from the infusion tube 3 is located inside the sheath 13. The sheath 13 is generally made of plastic and can protect the needle stem 12 from damage and contamination. The part of the needle handle 11 with the first limiting rib 112 is inserted into the sheath 13. The inner wall of the sheath 13 is fixed with a number of second limiting ribs 131 that correspond one-to-one with the first limiting rib 112. The arrangement order of the first limiting ribs 112 and the second limiting ribs 131 is that every two first limiting ribs 112 and two second limiting ribs 131 are arranged in sequence. The first limiting ribs 112 and the second limiting ribs 131 are interference fit. The second limiting ribs 131 are used to restrict the rotation of the first limiting ribs 112, thereby ensuring that the sheath 13 can be accurately installed on the needle handle 11. This prevents the sheath 13 from rotating off due to vibration or impact before handling, storage or use, which could lead to accidental detachment from the needle handle 11. This ensures that the needle shaft 12 is in a safe and clean state, and ensures the reliability and safety of the drug transfer device in subsequent use.

[0051] Reference Figure 7 , Figure 8 , Figure 9 and Figure 10 A multi-way valve 9 is provided between the first puncture device 1 and the second puncture device 2. The multi-way valve 9 can flexibly control the on / off state and flow distribution between multiple first puncture devices 1 and second puncture devices 2 to meet different drug transfer requirements. The multi-way valve 9 has multiple interfaces, enabling different combinations of drug transfer paths. The multi-way valve 9 allows for various configurations of the drug transfer device, suitable for different drug transfer needs. For example, when there is one first puncture device 1 and several second puncture devices 2, the multi-way valve 9 is located between one first puncture device 1 and several second puncture devices 2, enabling the simultaneous or sequential transfer of medication from a vial to multiple liquid bags, achieving one-to-many medication transfer. When there are several first puncture devices 1 and several second puncture devices 2, the multi-way valve 9 is located between several first puncture devices 1 and several second puncture devices 2, enabling the simultaneous or separate transfer of medication from multiple vials to multiple liquid bags, achieving many-to-many medication transfer. When there are several first puncture devices 1 and one second puncture device 2, the multi-way valve 9 is located between several first puncture devices 1 and one second puncture device 2, enabling the simultaneous aspiration of medication from multiple vials and the centralized transfer of these medications to one liquid bag, achieving many-to-one medication transfer. Each port of the multi-way valve 9 is connected to an infusion tube 3, which is connected to the first puncture device 1 and the second puncture device 2 respectively. The infusion tube 3 is fixed to the mounting bracket 7 by a clamp valve 6 fitted on its outer wall. The clamp valve 6 can be controlled by a signal to open or close the infusion tube 3. When the fixing component 8 drives the first puncture device 1 and the second puncture device 2 to insert or pull out the corresponding container, the clamp valve 6 will loosen or clamp the infusion tube 3 to open or close the infusion tube 3.

[0052] Regarding the provision of power source 5, besides connecting an external power source 5 to the multi-way valve 9, the external power source 5 can be a pressure pump or flow pump, or a peristaltic pump can be connected to the outer wall of the hose to provide power. A peristaltic pump generally consists of a pump head, motor, and controller. The pump head pushes the liquid flow by squeezing the hose. This partial alternative solution can also achieve drug transfer, and in some cases, the control of the peristaltic pump is more precise, allowing adjustment of the liquid's flow rate and volume according to actual needs. Using a peristaltic pump as power source 5 avoids the complexity and instability that may arise from connecting an external power source 5. The peristaltic pump pushes the liquid flow by squeezing the hose, avoiding direct contact with the liquid and reducing the risk of contamination. Simultaneously, the peristaltic pump can precisely control the liquid's flow rate and volume through the controller, better meeting the needs of different drug transfers, improving the accuracy and stability of drug transfer, and further enhancing the performance and practicality of the drug transfer device.

[0053] The implementation principle of a drug transfer device according to an embodiment of this application is as follows: The first puncture device 1 and the second puncture device 2 adopt a coaxial needle handle 11 and needle shaft 12 structure, which facilitates connection with the infusion tube 3 and ensures smooth drug transfer. The needle seat 21 of the second puncture device 2 is integrally formed with the needle handle 11, ensuring structural stability. The needle shaft 12 of the first puncture device 1 is inserted into the needle handle 11, and the needle shaft 12 of the second puncture device 2 passes through the needle seat 21 and is inserted into the needle handle 11, further enhancing the tightness of the connection and reducing the risk of drug leakage. The power source 5 can effectively drive the liquid in the infusion tube 3 to flow between the first puncture device 1 and the second puncture device 2, realizing the transfer of drug. The filter 4 can filter the liquid flowing from the power source 5 to the second puncture device 2, improving the purity of the drug and preventing impurities from entering the target container. The axial venting grooves 211 evenly distributed along the circumference of the outer wall of the needle hub 21 can automatically open the internal and external air channels when the puncture device is inserted into the liquid bag or vial, allowing air to pass through smoothly, playing a role in venting, preventing the liquid bag from swelling, and ensuring the safety and stability of the drug transfer process.

[0054] On the other hand, this application discloses a method of using a drug transfer device, including the following steps: S1, remove the sheath 13 from the first puncture device 1 and the second puncture device 2 respectively to avoid obstructing the puncture operation and ensure a smooth puncture process. When removing the sheath 13, handle it gently to avoid damaging the needle shaft 12. Generally, you can hold the edge of the sheath 13 with your hand and pull it off the needle handle 11 smoothly.

[0055] S2, the fixing component 8 is used to fix the first puncture device 1 and the second puncture device 2 respectively, so that the puncture devices remain stable during operation and prevent shaking or displacement from affecting the drug transfer effect. First, the first limiting rib 112 is inserted into the socket 84, and then the sliding plate 82 is driven to slide, inserting the insertion rod 83 into the insertion cylinder 111, so as to realize the fixing component 8 to fix the first puncture device 1 and the second puncture device 2.

[0056] S3, the fixing assembly 8 of the first puncture device 1 is slidably fixed so that the needle shaft 12 of the first puncture device 1 is inserted into the medicine bottle to be dispensed. During operation, the sliding seat 81 is slowly pushed along the sliding track on the mounting bracket 7 so that the needle shaft 12 of the first puncture device 1 is accurately inserted into the rubber stopper of the medicine bottle.

[0057] S4, the fixing assembly 8 of the second puncture device 2 is slidably fixed to insert the needle shaft 12 of the second puncture device 2 into the liquid bag to be infused. Similarly, the sliding seat 81 is moved along the sliding track to allow the needle shaft 12 of the second puncture device 2 to be smoothly inserted into the interface of the liquid bag.

[0058] S5, start power source 5 to transfer the liquid in the medicine bottle to the liquid bag through infusion tube 3. If an external power source 5 is used, turn on the corresponding power equipment; if a peristaltic pump is used, start the peristaltic pump motor, adjust the flow rate and flow rate to start the transfer of medicine.

[0059] S6, after the liquid in the vial is completely transferred, turn off power source 5, replace with a new vial, and restart power source 5, repeating the cycle until the IV bag is full. Once the liquid transfer in the vial is complete, promptly turn off power source 5 to prevent air from entering the IV tubing 3. When replacing with a new vial, ensure it is sealed and clean, then restart power source 5 to continue transferring the medication. A rotating turntable with grooves for holding vials can be used. After the liquid in one vial is completely transferred, the turntable rotates to position the next vial at the first puncture device 1.

[0060] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A liquid medicine transfer device, characterized in that: The device includes a first puncture device (1), a second puncture device (2), an infusion tube (3), a filter (4), and a power source (5). Both the first puncture device (1) and the second puncture device (2) include a needle handle (11) and a needle shaft (12) arranged coaxially. The second puncture device (2) also includes a needle seat (21) integrally formed with the needle handle (11). One end of the needle shaft (12) of the first puncture device (1) is inserted into the needle handle (11), and the needle shaft (12) of the second puncture device (2) passes through the needle seat (21) and is inserted into the needle handle (11). Inside the infusion tube (3), the end of the needle handle (11) away from the needle shaft (12) is connected to the infusion tube (3). The power source (5) is used to drive the liquid in the infusion tube (3) to flow between the first puncture device (1) and the second puncture device (2). The filter (4) is used to filter the liquid flowing from the power source (5) to the second puncture device (2). Several exhaust grooves (211) are evenly opened on the outer wall of the needle seat (21) along its circumference. The exhaust grooves (211) are opened along the axial direction of the needle seat (21). The outer wall of the infusion tube (3) is fitted with a clamp valve (6).

2. The drug transfer device according to claim 1, characterized in that: It also includes a mounting bracket (7), which is provided with a fixing component (8) for fixing the needle handle (11). The power source (5) and the clamp valve (6) are both fixedly connected to the mounting bracket (7). The fixing component (8) is slidably connected to the mounting bracket (7) along the axial direction of the needle handle (11). Two inserts (111) are uniformly fixed on the outer wall of the needle handle (11) in the circumferential direction. The fixing component (8) includes a sliding seat (81) and two sliding plates (82) that slide towards each other on the sliding seat (81). The opposite ends of the two sliding plates (82) are fixed with insert rods (83) for inserting into the inserts (111).

3. A liquid medicine transfer device according to claim 2, characterized in that: The outer wall of the needle handle (11) is uniformly provided with a number of first limiting ribs (112) along its circumference. The limiting ribs are located on the side of the insert (111) away from the infusion tube (3). The sliding seat (81) is provided with a socket (84) at one end near the insert rod (83). The part of the needle handle (11) with the first limiting ribs (112) is inserted into the socket (84).

4. A liquid medicine transfer device according to claim 3, characterized in that: The needle shaft (12) is fitted with a sheath (13) on the outer side of the end away from the infusion tube (3). The part of the needle handle (11) with the first limiting rib (112) is inserted into the sheath (13). Several second limiting ribs (131) corresponding one-to-one with the first limiting rib (112) are fixed along the circumferential direction on the inner wall of the sheath (13). The second limiting ribs (131) are used to restrict the rotation of the first limiting rib (112).

5. A liquid medicine transfer device according to claim 4, characterized in that: The needle holder (21) has two through holes (212) arranged along its own axis, and the through holes (212) are opened on one of the venting grooves (211).

6. A liquid medicine transfer device according to claim 4, characterized in that: A multi-way valve (9) is provided between the first puncture device (1) and the second puncture device (2).

7. A liquid medicine transfer device according to claim 6, characterized in that: There is one first puncture device (1) and several second puncture devices (2). A multi-way valve (9) is located between one first puncture device (1) and several second puncture devices (2).

8. A liquid medicine transfer device according to claim 6, characterized in that: There are several first puncture devices (1) and several second puncture devices (2). A multi-way valve (9) is located between several first puncture devices (1) and several second puncture devices (2).

9. A liquid medicine transfer device according to claim 6, characterized in that: There are several first puncture devices (1) and one second puncture device (2). A multi-way valve (9) is located between several first puncture devices (1) and one second puncture device (2).

10. A method of using a drug transfer device, applied to a drug transfer device as described in any one of claims 4-9, characterized in that, The steps include: S1, remove the sheath (13) from the first puncture device (1) and the second puncture device (2) respectively; S2, the first puncture device (1) and the second puncture device (2) are fixed using the fixing component (8); S3, the fixing component (8) of the first puncture device (1) is slidably fixed to insert the needle shaft (12) of the first puncture device (1) into the medicine bottle to be taken; S4, the fixing component (8) of the second puncture device (2) is slidably fixed to insert the needle shaft (12) of the second puncture device (2) into the liquid bag to be infused; S5, start the power source (5) to transport the liquid in the medicine bottle to the liquid bag through the infusion tube (3); S6. After the liquid in the medicine bottle is delivered, turn off the power source (5), replace the medicine bottle, and turn on the power source (5) again. Repeat the operation until the liquid bag is full.

Images