Chemotherapy drug preparation and infusion apparatus

Abstract

This invention relates to the field of medical solution preparation equipment, and more particularly to a chemotherapy drug preparation and infusion device. It includes: a drug container, a pusher, and a flow guide. The drug container has a solution preparation chamber and a receiving groove inside, and has a first connector and a second connector. The first connector communicates with the solution preparation chamber and has a flow state and a cut-off state. The pusher is disposed within the solution preparation chamber and the receiving groove, and partially extends out of the receiving groove. The pusher is capable of linear movement relative to the drug container and has a liquid channel communicating with the solution preparation chamber. The liquid channel is connected to the second connector via a conduit. The flow guide is rotatably connected to the drug container, located between the receiving groove and the second connector, and is capable of rotating relative to the drug container to a first flow guide position that blocks the second connector from the solution preparation chamber, or to a second flow guide position that connects the second connector to the solution preparation chamber.

Description

Technical Field

[0001] This invention relates to the field of medical solution preparation equipment, and more particularly to a chemotherapy drug preparation and infusion device. Background Technology

[0002] In the current clinical practice of preparing chemotherapy drugs, the first step is to use a syringe to draw a fixed amount of normal saline, such as 50 ml, from the infusion bag. Then, the normal saline is injected into the vial containing the chemotherapy drugs. To ensure that the chemotherapy drugs are completely dissolved in the normal saline, medical staff need to repeatedly draw the solution from the vial using a syringe. Then, the solution is instilled or flushed back into the saline bag to complete the infusion of the chemotherapy drugs. Although this operation can complete the preparation of the solution, the overall operation is too cumbersome and requires a lot of physical labor from medical staff.

[0003] To address this issue, automated dispensing equipment has been used in clinical practice for chemotherapy drug preparation. However, the purchase and maintenance costs of such equipment are high, making its widespread adoption difficult, especially in smaller hospitals. Therefore, the aforementioned problem remains a significant challenge in clinical practice.

[0004] Therefore, there is an urgent need for a chemotherapy drug preparation device that can simplify the preparation process, reduce the workload of medical staff, and be applicable to hospitals at all levels. Summary of the Invention

[0005] To address the aforementioned issues, this application discloses a chemotherapy drug preparation and infusion device, which allows medical personnel to dissolve chemotherapy drugs in saline solution with one hand during the drug preparation process, thereby reducing the physical labor of medical personnel during the drug preparation process.

[0006] To achieve the above objectives, this application adopts the following technical solution: A drug container has a liquid dispensing chamber and a receiving tank inside. The drug container also has a first connector and a second connector, wherein the first connector is connected to the liquid dispensing chamber and has a flow state and a stop state. A pusher is disposed in the liquid dispensing chamber and the receiving groove, and partially extends out of the receiving groove. The pusher is capable of linear movement relative to the drug container. The pusher has a liquid channel communicating with the liquid dispensing chamber and the liquid channel communicating with the second connector pipe. A flow guide is rotatably connected to the drug container, located between the receiving groove and the second connector, and is rotatable relative to the drug container to a first flow guide position that blocks the second connector from the dispensing chamber, or to a second flow guide position that connects the second connector to the dispensing chamber; In the flow state, when the guide member is rotated to the first guide position, the pusher member is pushed to move towards the second connector, which can draw the liquid medicine from the first connector into the liquid dispensing chamber; In the cut-off state, when the guide member is rotated to the second guide position, the pusher member is pushed to move towards the first connector, so that the liquid in the dispensing chamber can be output from the second connector after passing through the liquid channel and the pipeline. Alternatively, pushing the pusher member towards the second connector can cause the liquid to be drawn into the dispensing chamber through the second connector.

[0007] In one illustrative embodiment of the chemotherapy drug preparation and infusion device, it further includes: A puncture needle is connected to the first connector. The puncture needle includes a communicating needle body and a connector end. A connecting groove is formed in the connector end. The connector end can move from a first installation position to a second installation position in the axial direction of the first connector. When the connector end is in the first installation position, the first connector is in the flow state. A blocking ball, disposed within the connecting groove, moves from the first installation position to the second installation position at the connector end. The blocking ball abuts against the first connector and slides along the inner wall of the connecting groove until it seals the connection between the connecting groove and the needle body, thereby changing the first connector from the flow state to the stop state.

[0008] In one illustrative embodiment of a chemotherapy drug preparation and infusion device, the first connector includes: A connecting pipe is provided, which is connected to the liquid dispensing chamber, and a support frame is also provided on the inner side of the connecting pipe; A hollow tube, which is coaxial with the connecting tube and connected to the support frame; The connecting groove includes a connecting section and a tapered section, wherein the connector end is installed to the connecting pipe through the connecting section, and the diameter of the tapered section gradually decreases in the direction away from the connecting section; When the connector end moves from the first installation position to the second installation position, the sealing ball abuts against the end of the connecting tube, slides from the surface of the connecting section to the surface of the tapered section, and moves towards the axis of the needle body under the restriction of the tapered section until the center of the sealing ball coincides with the axis of the needle body.

[0009] In one illustrative embodiment of the chemotherapy drug preparation and infusion device, it further includes: a spring, the spring being disposed around the pusher in the solution preparation chamber, with one end of the spring abutting against the inner wall of the solution preparation chamber and the other end of the spring abutting against the pusher, so that the pusher always moves toward the first connector.

[0010] In one illustrative embodiment of a chemotherapy drug preparation and infusion device, the dispensing chamber has an abutment wall away from the first connector in the direction of movement of the pusher. An abutting protrusion is provided around the outer surface of the pusher, wherein one end of the spring abuts against the abutting wall, and the other end of the spring abuts against the abutting protrusion.

[0011] In one illustrative embodiment of a chemotherapy drug preparation and infusion device, the drug container further includes: a connecting channel located between the receiving groove and the second connector, the tubing communicating with the second connector via the connecting channel; and The mounting slot is located on one side of the connecting channel and communicates with the connecting channel. The mounting slot has an assembly port formed on the outer surface of the drug container, and the guide member is installed into the mounting slot through the assembly port.

[0012] In one illustrative embodiment of a chemotherapy drug preparation and infusion device, the flow guide has a through hole. In the first flow guide position, the through hole is offset from the connecting channel to isolate the second connector from the solution preparation chamber. In the second flow guide position, the through hole is coaxial with the connecting channel to allow the second connector to communicate with the solution preparation chamber.

[0013] In one illustrative embodiment of the chemotherapy drug preparation and infusion device, the drug container further includes: A handle is attached to the outer surface of the drug container and located between the receiving groove and the second connector; The pusher also includes a force-applying handle, wherein the force-applying handle is disposed at one end of the pusher located within the receiving groove and extends out of the receiving groove.

[0014] In one illustrative embodiment of a chemotherapy drug preparation and infusion device, the assembly port is located above one side of the handle on the outer surface of the drug container along the length extension direction of the handle.

[0015] The preferred embodiments will be described below in a clear and easy-to-understand manner, with reference to the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of the chemotherapy drug preparation and infusion device. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic diagram illustrating an embodiment of a chemotherapy drug preparation and infusion device.

[0017] Figure 2 Used to explain Figure 1 Schematic cross-sectional view along the AA direction.

[0018] Figure 3 This is a structural diagram illustrating the first connector in the closed state.

[0019] Figure 4 This is a schematic diagram illustrating the connection between the liquid preparation chamber and the second connector.

[0020] Figure 5 This is a schematic diagram illustrating the internal structure of the first connector in a flowing state.

[0021] Figure 6 This is a schematic diagram illustrating the internal structure of the first connector in the closed state.

[0022] Figure 7 This is a schematic diagram illustrating the specific structure inside the liquid preparation chamber.

[0023] Figure 8 This is a schematic diagram illustrating the structure of the pusher and the liquid dispensing chamber.

[0024] Figure 9 This is a schematic diagram illustrating the structure between the force-applying handle and the gripping handle.

[0025] Figure 10 This diagram illustrates the direction of movement of the force-applying handle.

[0026] Figure 11 This diagram illustrates the positional relationship between the flow guide and the drug container.

[0027] Figure 12 This is a schematic diagram illustrating the structure of the guide element at the first guide position.

[0028] Figure 13 This is a schematic diagram illustrating the structure of the guide element at the second guide position.

[0029] Figure 14 This is a schematic diagram illustrating the position and structure of the locking groove on the drug container.

[0030] Figure 15Used to explain Figure 14 Cross-sectional view along the CC direction.

[0031] Figure 16 Used to explain Figure 14 Schematic cross-sectional view along the DD direction.

[0032] Label Explanation 1. Drug container; 11. Dispensing chamber; 111. Spring; 12. Receiving groove; 121. Locking groove; 13. First connector; 131. Connecting pipe; 132. Hollowed-out pipe; 14. Second connector; 15. Pushing element; 151. Liquid channel; 152. Abutment protrusion; 153. Sealing element; 154. Force application handle; 1541. Limiting slide groove; 1542. Locking rod; 16. Pipeline; 17. Holding handle; 18. Mounting groove; 181. Assembly port; 19. Connecting channel; 2. Puncture needle; 21. Needle body; 22. Connector end; 221. Connecting groove; 2211. Connecting section; 2212. Conical section; 23. Sealing ball; 3. Flow guide; 31. Through hole; 32. Blocking protrusion. Detailed Implementation

[0033] To provide a clearer understanding of the technical features, objectives, and effects of this application, specific embodiments of this application are now described with reference to the accompanying drawings. In the drawings, the same reference numerals indicate components with the same or similar structures but the same function.

[0034] In this document, “illustrative” means “serving as an example, illustration or description”, and any illustration or implementation described herein as “illustrative” should not be construed as a more preferred or advantageous technical solution.

[0035] Figure 1 A schematic diagram illustrating an embodiment of a chemotherapy drug preparation and infusion device. Figure 2 Used to explain Figure 1 Schematic cross-sectional view along the AA direction. Figure 3 This is a structural diagram illustrating the first connector in the closed state. Figure 4 This is a schematic diagram illustrating the connection between the liquid preparation chamber and the second connector. (Combined with...) Figure 1-4 This chemotherapy drug preparation and infusion device includes: a drug container 1, a propulsion component 15, and a flow guide 3, such as... Figure 1 , Figure 2As shown, the drug container 1 has a dispensing chamber 11 and a receiving groove 12 inside. Along the length of the drug container 1, it also has a first connector 13 and a second connector 14 arranged opposite to each other. The first connector 13 communicates with the dispensing chamber 11. Under normal conditions, the first connector 13 is in a flowing state a1, allowing the drug solution to flow into the dispensing chamber 11 through the first connector 13. The first connector 13 can also form a blocking state a2, preventing the drug solution from entering the dispensing chamber 11 through the first connector 13. Referring to the figure, it can be seen that the first connector 13 and the second connector 14 are respectively equipped with puncture needles 2. The first connector 13 is connected to an infusion bag containing saline solution through the corresponding puncture needle 2, and the second connector 14 is connected to a vial containing chemotherapy drugs through the corresponding puncture needle 2.

[0036] Combination Figure 2-3 One end of the pusher 15 is located in the dispensing chamber 11, and the other end is located in the receiving groove 12, partially extending out of the receiving groove 12. The pusher 15 is capable of linear movement relative to the drug container 1. Figure 2 Along the length of the pusher 15, a liquid channel 151 is provided through the interior of the pusher 15, and the liquid channel 151 communicates with the liquid dispensing chamber 11. The liquid channel 151 is connected to the second connector 14 through the pipe 16. Specifically, a sealing element 153 is provided at one end of the pusher 15 located in the liquid dispensing tank (see reference). Figure 8 The outer circumferential surface of the seal 153 is in sealing contact with the inner wall of the liquid dispensing chamber 11, thereby ensuring the sealing performance of the liquid dispensing chamber 11.

[0037] Combination Figure 3-4 The flow guide 3 is rotatably connected to the drug container 1 and is located between the receiving groove 12 and the second connector 14. It can rotate relative to the drug container 1 to a first flow guide position b1 that blocks the second connector 14 from the dispensing chamber 11 (e.g., Figure 3 (as shown), or, as Figure 4 As shown, rotate to the second guide position b2, which connects the second connector 14 to the liquid dispensing chamber 11.

[0038] Combination Figure 2-4 Specifically, when the first connector 13 is in a flowing state and the guide member 3 is rotated to the first guide position, the second connector 14 is blocked from the solution preparation chamber 11. The solution preparation chamber is connected to the outside through the first connector 13. Then, the push member 15 is moved towards the second connector 14. At this time, a negative pressure is generated in the solution preparation chamber 11, and the saline solution in the infusion bag is drawn into the solution preparation chamber 11.

[0039] Then, the first connector 13 is adjusted to the cut-off state, and the guide 3 is rotated to the second guide position. At this time, the first connector 13 is closed, and the second connector 14 is connected to the solution preparation chamber 11. The pusher 15 is moved towards the first connector 13. Under the pressure of the pusher 15, a positive pressure is generated in the solution preparation chamber 11, so that the saline solution in the solution preparation chamber 11 is injected into the vial through the liquid channel 151 and the tubing 16. Then, the pusher 15 is moved towards the second connector 14. Since the first connector 13 is closed, a negative pressure is generated in the solution preparation chamber 11. The saline solution containing chemotherapy drugs in the vial is drawn into the solution preparation chamber 11. This process is repeated until the chemotherapy drugs are completely dissolved in the saline solution. Finally, the prepared drug solution is injected into the infusion bag through the second connector 14 for drip infusion to the patient, or connected to the patient's indwelling catheter device for infusion into the body cavity or bladder.

[0040] Figure 5 This is a schematic diagram illustrating the internal structure of the first connector in a flowing state. Figure 6 This is a schematic diagram illustrating the internal structure of the first connector in the closed state.

[0041] To enable the first connector 13 to switch between the connected state and the disconnected state, as follows: Figure 5 The first connector 13 is equipped with a puncture needle 2. During use, the puncture needle 2 can be inserted into the rubber stopper of the infusion bag to draw saline solution into the drug preparation chamber via the first connector 13. Figure 5-6 In the axial direction of the first connector 13, the puncture needle 2 can move from the first installation position to the second installation position relative to the first connector 13. In the first installation position, the puncture needle 2 is in a flowing state, and at this time, saline can enter the drug preparation chamber through the puncture needle 2 and the first connector 13. In the second installation position, the puncture needle 2 is in a closed state, and saline cannot pass through the puncture needle 2.

[0042] like Figure 5 As shown, specifically, the puncture needle 2 includes: a needle body 21 and a connector end 22 connected together. The connector end 22 is provided with a connecting groove 221. The connecting groove 221 includes: a connecting section 2211 and a tapered section 2212. The diameter of the tapered section 2212 gradually decreases in the direction away from the connecting section 2211.

[0043] The first connector 13 includes a connecting tube 131 and a perforated tube 132. The connecting tube 131 is connected to the solution preparation chamber 11. The connector end 22 is connected to the connecting tube 131 via a connecting section 2211, for example, by a threaded connection, to allow the puncture needle 2 to be installed onto the first connector 13. In this configuration, for example, by turning the connector end 22 clockwise, the puncture needle 2 can be moved from a first installation position to a second installation position; correspondingly, by turning the connector end 22 counterclockwise, the puncture needle 2 can be moved from a second installation position to a first installation position. This configuration allows medical personnel to quickly close the first connector 13 and simultaneously rotate the guide member 3 to the second guide position, thereby injecting the saline solution in the solution preparation chamber 11 into the vial. A support frame is also provided inside the connecting tube 131. The perforated tube 132 is coaxial with the connecting tube 131 and connected to the support frame.

[0044] Combination Figure 5-6 The sealing ball 23 is placed in the connecting groove 221, as shown in Figure 5. When the puncture needle 2 is in the first installation position, during the process of the liquid entering the liquid preparation chamber 11 through the puncture needle 2 and the first connector 13, the sealing ball 23 moves towards the first connector 13 under the impact of the saline. At this time, the hollow tube 132 can prevent the sealing ball 23 from entering the connecting tube 131, so as to ensure that the saline normally flows into the drug preparation chamber.

[0045] Combination Figure 6 When the puncture needle 2 moves from the first installation position to the second installation position, the sealing ball 23 will move towards the first connector 13 due to the friction between it and the inner surface of the connecting section 2211, and abut against the port of the connecting tube 131. At this time, the sealing ball 23 moves with the puncture needle 2 and slides from the inner surface of the connecting section 2211 to the inner surface of the tapered section 2212. Since the inner surface of the tapered section 2212 is inclined, the sealing ball 23 will move towards the axis of the puncture needle 2 under the restriction of the tapered section 2212 until the communication position between the connecting groove 221 and the needle body 21 is blocked (i.e., the puncture needle 2 moves to the second installation position). The sealing ball 23 is locked in position by the cooperation of the connecting tube 131, the hollow tube 132 and the tapered section 2212, thereby making the first connector 13 form a cut-off state. This setup ensures that the extraction speed is not affected when drawing saline solution, while also quickly sealing the puncture needle 2. In conjunction with the rotation of the guide 3, it can quickly change the connection between the solution preparation chamber 11 and the first connector 13 and the second connector 14, so that medical personnel can inject saline solution into the vial. It also facilitates the reciprocating aspiration of the medication in the vial.

[0046] In the current clinical medication preparation process, medical staff need to hold syringes with both hands and repeatedly inject saline solution into vials, which places a heavy physical burden on medical staff.

[0047] Figure 7 This is a schematic diagram illustrating the specific structure inside the liquid preparation chamber. Figure 8 This is a schematic diagram illustrating the structure of the actuating component and the liquid dispensing chamber. (Combined with...) Figure 7-8 The device further includes a spring 111, which is disposed within the dispensing chamber 11 around the pusher 15. One end of the spring 111 abuts against the inner wall of the dispensing chamber 11, and the other end of the spring 111 abuts against the pusher 15, so that the pusher 15 always moves towards the first connector 13. Referring to the figure, in the direction of movement of the pusher 15, the dispensing chamber 11 has an abutting wall away from the first connector. An abutting protrusion 152 is provided on the outer surface of the pusher 15, which is circumferentially arranged around the axis of the pusher 15. One end of the spring 111 abuts against the abutting wall, and the other end of the spring 111 abuts against the abutting protrusion 152. Figure 2-3 , Figure 7-8 In actual use, the first connector 13 is in the flow-through state, the guide member 3 is in the first guide position, and the medical staff holds the drug container 1 and pushes the member 15 towards the second connector 14. At this time, the spring 111 is compressed to draw the saline solution into the dispensing chamber. Then, the first connector 13 is switched to the cut-off state, and the guide member 3 is rotated to the second guide position. At this time, the pusher 15 is released, the spring 111 opens, and under the action of the spring 111, the pusher 15 moves towards the second connector 14 to draw the saline solution into the dispensing chamber. Saline solution is injected into the vial. As those skilled in the art will understand, since the first connector 13 is closed, the reciprocating motion of the push rod can repeatedly inject and draw the drug solution into and from the vial until the chemotherapy drug is completely dissolved in the saline solution. Thus, in this configuration, the operator can complete the reciprocating motion of the push rod 15 by only applying intermittent force, thereby achieving the reciprocating transfer of the drug solution between the dispensing chamber 11 and the vial, which reduces the operator's physical labor in the drug preparation process.

[0048] Figure 9 This is a schematic diagram illustrating the structure between the force-applying handle and the gripping handle. Figure 10 This diagram illustrates the direction of movement of the force-applying handle. To further reduce the workload of medical staff, combined with... Figure 8-10 The drug container 1 also includes a handle 17 disposed between the receiving groove 12 and the second connector 14, and the pusher 15 also includes a force-applying handle 154, wherein the force-applying handle 154 is disposed at one end of the pusher 15 located within the receiving groove 12 and extends out of the receiving groove 12, such as... Figure 9-10As shown, in actual use, medical personnel can hold the drug container 1 with one hand by holding the handle 17 and the force-applying handle 154, and then apply force to the force-applying handle 154 to make the pushing member 15 move relative to the drug container 1, thereby performing the drug dispensing operation. For example, when the pushing member 15 is pushed towards the second connector 14 by the force-applying handle 154, the spring 111 is compressed, and the drug solution can be drawn into the dispensing chamber 11 from the first connector 13 or the second connector 14. When the external force is stopped applied to the force-applying handle 154, the spring 111 opens to push the drug solution from the dispensing chamber 11 into the vial. Compared with the current method of repeatedly drawing and pushing the syringe with both hands to dispense the drug, the setting of this application allows the operator to complete the repeated pushing and drawing of the drug solution into the vial with one hand.

[0049] Figure 11 This diagram illustrates the positional relationship between the flow guide and the drug container. Figure 12 This is a schematic diagram illustrating the structure of the guide element at the first guide position. Figure 13 This is a schematic diagram illustrating the structure of the guide member at the second guide position. The drug container 1 also includes a mounting groove 18 and a connecting channel 19. The mounting groove 18 has an assembly port 181 formed on its outer surface, through which the guide member 3 is installed into the mounting groove 18. The connecting channel 19 is located inside the drug container 1, between the receiving groove 12 and the second connector 14, and passes through the mounting groove 18. The pipeline 16 communicates with the second connector through the connecting channel 19, such as... Figure 11 As shown, the flow guide 3 is cylindrical and is mounted into the mounting groove 18 via a shaft. The flow guide 3 also has a through hole 31. Figure 3 , 12 As shown, when the guide member 3 rotates to the first guide position, the axis of the through hole 31 deviates from the axis of the connecting channel 19, causing the connecting channel 19 to be blocked by other positions of the guide member 3. At this time, the liquid dispensing chamber 11 will not be able to communicate with the second connector 14; as Figure 4 , 13 As shown, when the guide member 3 is rotated to the second position, the axis of the through hole 31 coincides with the axis of the connecting channel 19. At this time, the liquid dispensing chamber 11 is connected to the second connector 14, so that the liquid can flow from the liquid dispensing chamber 11 to the second connector 14, or from the second connector 14 to the liquid dispensing chamber 11. With this setting, the operator can quickly switch the connection relationship between the liquid dispensing chamber 11 and the second connector 14.

[0050] Combination Figure 11-13 Specifically, the outer circumferential surface of the guide member 3 is provided with an arc-shaped blocking protrusion 32. The two ends of the blocking protrusion 32 in the length direction are respectively the first contact wall and the second contact wall. In use, it is combined with... Figure 12-13 For example, rotating the guide 3 clockwise causes the first contact wall to abut against the outer wall of the drug container 1. At this time, the axis of the through hole 31 is misaligned with the axis of the connecting channel 19, causing the connecting channel 19 to be blocked by the guide 3. Correspondingly, rotating the guide 3 counterclockwise causes the second contact wall to abut against the outer wall of the drug container 1. At this time, the axis of the through hole 31 coincides with the axis of the connecting channel 19, allowing the connecting channel 19 to flow.

[0051] Specifically, sealing gaskets are provided at both ends of the guide member 3 in the axial direction, so that when the guide member 3 rotates, the liquid medicine will not seep out into the slit between the guide member 3 and the mounting groove 18.

[0052] At the same time, combined Figure 2 , Figure 11 The mounting opening 181 of the mounting groove 18 is located above the handle 17 on the outer surface of the drug container 1, so that the guide 3 is also located in the same position. When the operator holds the handle 17, his thumb can press on the circumferential outer surface of the guide 3. In this configuration, the operator holds the drug container 1 with one hand by holding the handle 17 and the force application handle 154. By applying external force to the force application handle 154, the liquid medicine is drawn from the first connector 13 into the dispensing chamber 11 through the puncture needle 2. The operator then rotates the puncture needle 2 with his other hand to close the position of the first connector 13. The thumb of the operator holding the drug container 1 can drive the guide 3 to rotate, so that the dispensing chamber 11 is connected to the second connector 14. After the operation is completed, the operator stops applying force to the pusher 15, allowing the pusher 15 to gradually move towards the first connector 13 under the action of the spring 111, so as to inject the drug solution into the vial connected to the second connector 14. In this state, the pusher 15 is applied intermittently, and in conjunction with the compression and opening of the spring 111, the drug solution can be repeatedly pushed and drawn into the vial. This ultimately forms a drug preparation device that allows the operator to repeatedly push and draw the drug solution with one hand. Compared with the traditional operation of using a syringe for drug preparation, it can speed up the preparation process, save the operator's physical strength, ensure the continuity of the preparation of chemotherapy drugs, and reduce the chance of the operator coming into contact with the chemotherapy drugs.

[0053] As will be understood by those skilled in the art, Figure 1 As shown, the second connector 14 is also connected to a puncture needle 2. In use, the vial can be pre-installed onto the second connector 14 through the puncture needle 2.

[0054] Figure 14 This is a schematic diagram illustrating the position and structure of the locking groove on the drug container. Figure 15 Used to explain Figure 14 Cross-sectional view along the CC direction. Figure 16 Used to explain Figure 14Cross-sectional view along the DD direction. (Combined with...) Figure 14 The outer surface of the drug container 1 is also provided with three locking grooves 121, which are arranged at intervals along the length of the drug container 1, in combination with... Figure 14 , Figure 15 The force-applying handle 154 also has a limiting groove 1541, in which a locking rod 1542 is slidably disposed, such as Figure 15 As shown, the locking lever 1542 can slide relative to the force-applying handle 154 in a direction perpendicular to the length of the drug container 1, so as to extend into a locking groove 121, thereby fixing the relative position between the pusher 15 and the drug container 1. Specifically, the outer wall of the drug container 1 is also provided with scale markings, wherein the scale markings correspond to the dispensing chamber 11. When the locking lever 1542 extends into different locking grooves 121, the amount of drug entering the dispensing chamber 11 is different. For example, the three locking grooves 121 correspond to 20ml, 35ml and 50ml respectively. In actual use, for example, Figure 15 , Figure 16 As shown, when 35ml of saline solution is needed to prepare chemotherapy drugs, firstly, the pusher 15 is moved relative to the drug container 1 (during this process, the spring 111 is compressed), and the drug solution enters the preparation chamber from the first connector position. When the volume of the inhaled drug solution is determined by the scale markings, the locking rod 1542 corresponds to the locking groove 121 in the middle position. Then, the medical staff pushes the locking rod 1542 with their little finger or ring finger, allowing the locking rod 1542 to extend into the corresponding locking groove 121. At this time, the spring 111 can provide a pushing force to the pusher 15 towards the first connector 13, while pulling the locking rod 1542 tightly against the inner wall of the locking groove 121, so that the locking rod 1542 will not come out of the locking groove 121, that is, the pusher 15 will not move under the action of the spring 111. At this time, the medical staff can switch the first connector 13 to the cut-off state and rotate the guide 3 to the second guide position (in conjunction with...). Figure 4 The process involves attaching the vial to the second connector 14. Correspondingly, applying force to the end of the locking rod 1542 that extends into the locking groove 121 causes the locking rod 1542 to disengage from the locking groove 121, the spring 111 unfolds, and the pusher 15, pushed by the spring 111, dispenses the medication from the second connector 14 into the vial. This configuration eliminates the need for medical personnel to constantly hold the force-applying handle 154 when changing the medication flow path, thus reducing the workload on their hands and ensuring the convenience of medication dispensing operations.

[0055] Specifically, the locking rod 1542 has an elongated hole through it, and the port where the pusher 15 connects to the pipe 16 is located inside the elongated hole. In this way, when the locking rod 1542 moves, it can avoid affecting the pipe 16.

[0056] To keep the drawings concise, only the parts relevant to this application are shown schematically in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, only one of the components with the same structure or function is shown schematically, or only one of them is labeled.

[0057] It should be understood that although this specification describes various embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0058] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of this application and are not intended to limit the scope of protection of this application. All equivalent implementations or modifications made without departing from the spirit of the art of this application, such as combinations, divisions or repetitions of features, should be included within the scope of protection of this application.

Claims

1. A chemotherapy drug preparation and infusion device, characterized in that, It includes, A drug container has a liquid dispensing chamber and a receiving tank inside. The drug container also has a first connector and a second connector, wherein the first connector is connected to the liquid dispensing chamber and has a flow state and a stop state. A pusher is disposed in the liquid dispensing chamber and the receiving groove, and partially extends out of the receiving groove. The pusher is capable of linear movement relative to the drug container. The pusher has a liquid channel communicating with the liquid dispensing chamber and the liquid channel communicating with the second connector pipe. A flow guide is rotatably connected to the drug container, located between the receiving groove and the second connector, and is rotatable relative to the drug container to a first flow guide position that blocks the second connector from the dispensing chamber, or to a second flow guide position that connects the second connector to the dispensing chamber; In the direction of movement of the pusher, the liquid dispensing chamber has an abutment wall away from the first connector; an abutment protrusion is provided around the outer surface of the pusher; and a spring is also included, one end of which abuts against the abutment wall and the other end of which abuts against the abutment protrusion. The drug container also includes a handle connected to the outer surface of the drug container; the pusher also includes a force-applying handle disposed at one end of the pusher and extending out of the receiving groove; the outer surface of the drug container is also provided with a locking groove, and the force-applying handle is provided with a locking rod that can extend into the locking groove, so that the relative position between the pusher and the drug container is fixed. In the flow state, when the guide member is rotated to the first guide position, the pusher member is pushed to move towards the second connector, which can draw the liquid medicine from the first connector into the liquid dispensing chamber; In the cut-off state, when the guide member is rotated to the second guide position, the pusher member is pushed to move towards the first connector, so that the liquid in the dispensing chamber can be output from the second connector after passing through the liquid channel and the pipeline. Alternatively, pushing the pusher member towards the second connector can cause the liquid to be drawn into the dispensing chamber through the second connector.

2. The chemotherapy drug preparation and infusion device as described in claim 1, characterized in that, Also includes: A puncture needle is connected to the first connector. The puncture needle includes a communicating needle body and a connector end. A connecting groove is formed in the connector end. The connector end can move from a first installation position to a second installation position in the axial direction of the first connector. When the connector end is in the first installation position, the first connector is in the flow state. A blocking ball, disposed within the connecting groove, moves from the first installation position to the second installation position at the connector end. The blocking ball abuts against the first connector and slides along the inner wall of the connecting groove until it seals the connection between the connecting groove and the needle body, thereby changing the first connector from the flow state to the stop state.

3. The chemotherapy drug preparation and infusion device as described in claim 2, characterized in that, The first connector includes: A connecting pipe, which is connected to the liquid dispensing chamber; A hollow tube, which is coaxial with the connecting tube, wherein the end of the hollow tube opposite to the puncture needle is connected to the inner surface of the connecting tube; The connecting groove includes a connecting section and a tapered section, wherein the connector end is installed to the connecting pipe through the connecting section, and the diameter of the tapered section gradually decreases in the direction away from the connecting section; When the connector end moves from the first installation position to the second installation position, the sealing ball abuts against the end of the connecting tube, slides from the surface of the connecting section to the surface of the tapered section, and moves towards the axis of the needle body under the restriction of the tapered section until the center of the sealing ball coincides with the axis of the needle body.

4. The chemotherapy drug preparation and infusion device as described in claim 1, characterized in that, The drug container further includes: a connecting channel located between the receiving groove and the second connector, wherein the tubing is connected to the second connector via the connecting channel; and The mounting slot is located on one side of the connecting channel and communicates with the connecting channel. The mounting slot has an assembly port formed on the outer surface of the drug container, and the guide member is installed into the mounting slot through the assembly port.

5. The chemotherapy drug preparation and infusion device as described in claim 4, characterized in that, The flow guide has a through hole. In the first flow guide position, the through hole is offset from the connecting channel to isolate the second connector from the liquid dispensing chamber. In the second flow guide position, the through hole is coaxial with the connecting channel to allow the second connector to communicate with the liquid dispensing chamber.

6. The chemotherapy drug preparation and infusion device as described in claim 4, characterized in that, The outer circumferential surface of the flow guide is provided with an arc-shaped blocking protrusion.

7. The chemotherapy drug preparation and infusion device as described in claim 4, characterized in that, In the length extension direction of the handle, the fitting port is located above one side of the handle on the outer surface of the drug container.

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