Closed preparation device for chemotherapeutic drugs

Abstract

The utility model relates to the technical field of chemotherapeutic drug preparation, and discloses a closed chemotherapeutic drug preparation device, which comprises an installation cylinder, a powder bag and a liquid bottle are arranged in the installation cylinder, the powder bag and the liquid bottle are arranged up and down, a configuration structure is arranged in the installation cylinder, and the configuration structure comprises two partition plates fixed in the installation cylinder. Through the arrangement of the configuration structure, a worker puts a powder bag into the mounting cylinder, slides the powder bag into the corresponding partition plate to be clamped, inserts a first needle head into a connector of the powder bag, slides a second needle head into the partition plate above to be clamped, puts a liquid bottle into the mounting cylinder, penetrates the second needle head into the liquid bottle, and flows liquid into the powder bag through the needle heads and a conveying pipe; preliminarily mixing with the medicinal powder; then a motor is started to drive a cam to rotate and push a movable plate to lift in a reciprocating manner, vibration is applied to the powder bag under the action of a spring, dissolution and mixing of medicine powder and saline water are accelerated, rapid and uniform preparation is achieved, and the chemotherapeutic medicine preparation efficiency and effect are improved.

Description

Technical Field

[0001] This utility model relates to the field of chemotherapy drug preparation technology, and in particular to a closed preparation device for chemotherapy drugs. Background Technology

[0002] Chemotherapy drugs are used to treat tumors. These drugs can act on different stages of tumor cell growth and reproduction to inhibit or kill tumor cells. However, because chemotherapy drugs are toxic, they also affect the normal cells of medical staff. When chemotherapy drugs are prepared and used, improper operation often results in invisible particles escaping and forming aerosols or mists containing toxic particles in the air. The drugs enter the human body through the respiratory tract or skin, thus causing physical effects on medical staff.

[0003] An existing closed-loop chemotherapy drug preparation device (publication number: CN215138737U) has at least the following drawbacks: Although the above-mentioned device uses an electric infusion pump to input saline from the liquid bottle into the powder bottle for mixing, and then pumps the mixture of powder and liquid back into the liquid bottle, the device involves two pumping operations, which is cumbersome and easily leads to low efficiency in chemotherapy drug preparation, resulting in poor chemotherapy drug preparation effect. Therefore, we propose this utility model. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a closed-loop configuration device for chemotherapy drugs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A closed-loop dispensing device for chemotherapy drugs includes an installation cylinder. The installation cylinder contains a powder bag and a liquid bottle, arranged vertically. The installation cylinder also contains a dispensing structure, which includes two partitions fixed inside the cylinder. A connector of the powder bag is slidably disposed within the lower partition. A first needle is slidably disposed within the upper partition. A second needle is slidably inserted into the connector of the powder bag. A delivery tube is fixed between the first and second needles. The second needle penetrates the rubber stopper of the liquid bottle and is slidably inserted into the interior of the liquid bottle.

[0007] As a further embodiment of this utility model, a base is fixed to the bottom end of the mounting cylinder, and a mounting groove is opened on the top surface of the base. The mounting groove is located inside the mounting cylinder, and a movable plate is slidably arranged inside the mounting groove. The top surface of the movable plate is in contact with the bottom surface of the powder bag. Several springs are fixed to the bottom surface of the movable plate, and the bottom ends of the several springs are fixed to the bottom surface of the mounting groove. A motor is fixed to the outer circular wall of the base, and the output end of the motor passes through one side of the base and is fixed with a cam. The outer circular wall of the cam is in contact with the bottom surface of the movable plate.

[0008] As a further embodiment of this utility model, the outer circular wall of the second needle is connected and fixed with an air tube, and a filter membrane is fixed inside the air tube.

[0009] As a further embodiment of this invention, a flow valve is slidably provided on the outer circular wall surface of the conveying pipe.

[0010] As a further embodiment of this utility model, a sliding notch is provided on one side of each of the two partitions, the connector of the powder bag is slidably disposed inside the lower sliding notch, and the second needle is slidably disposed with the upper sliding notch.

[0011] As a further embodiment of this invention, the diameter of the base is larger than the diameter of the mounting cylinder.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This device, through its configuration structure, allows operators to place a powder bag into the mounting cylinder, where it slides into the corresponding partition and engages. A first needle is inserted into the connector of the powder bag, and a second needle slides into the upper partition and engages. A liquid bottle is then placed into the mounting cylinder, allowing the second needle to pierce the liquid bottle. Liquid flows through the needle and delivery tube into the powder bag, where it is initially mixed with the drug powder. Subsequently, a motor is activated, driving a cam to rotate and actuate a movable plate to move up and down repeatedly. Under the action of a spring, the powder bag vibrates, accelerating the dissolution and mixing of the drug powder and saline solution, achieving rapid and uniform preparation, and improving the efficiency and effectiveness of chemotherapy drug preparation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the closed-loop chemotherapy drug preparation device proposed in this utility model;

[0015] Figure 2 This is a schematic diagram showing the disassembled structure of the closed-loop chemotherapy drug preparation device proposed in this utility model.

[0016] Figure 3 This is a schematic diagram showing the disassembled structure of the delivery pipe of the closed chemotherapy drug preparation device proposed in this utility model.

[0017] Figure 4 This is a schematic diagram of the disassembled structure of the base of the closed chemotherapy drug configuration device proposed in this utility model.

[0018] In the diagram: 1. Mounting cylinder; 2. Powder bag; 201. Divider; 202. First needle; 203. Second needle; 204. Delivery pipe; 205. Base; 206. Mounting groove; 207. Movable plate; 208. Spring; 209. Cam; 3. Liquid bottle; 301. Vent pipe; 302. Filter membrane; 4. Flow valve; 5. Sliding notch. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Reference Figures 1-4 A closed-loop chemotherapy drug preparation device includes an installation cylinder 1. Inside the installation cylinder 1 are a powder bag 2 and a liquid bottle 3, arranged vertically. The installation cylinder 1 has a preparation structure, which includes two partitions 201 fixed inside the installation cylinder 1. The connector of the powder bag 2 is slidably disposed within the lower partition 201. A first needle 202 is slidably disposed within the upper partition 201. A second needle 203 is slidably inserted into the connector of the powder bag 2. A delivery tube 204 is fixed between the first needle 202 and the second needle 203. The second needle 203 penetrates the rubber stopper of the liquid bottle 3 and is slidably inserted into the interior of the liquid bottle 3. Both the first needle 202 and the second needle 203 are hollow needles, and the delivery tube 204 is a flexible tube.

[0023] In this embodiment, a base 205 is fixed to the bottom end of the mounting cylinder 1. A mounting groove 206 is formed on the top surface of the base 205, located inside the mounting cylinder 1. A movable plate 207 is slidably disposed inside the mounting groove 206. The top surface of the movable plate 207 is in contact with the bottom surface of the powder bag 2. Several springs 208 are fixed to the bottom surface of the movable plate 207, with their bottom ends fixed to the bottom surface of the mounting groove 206. A motor is fixed to the outer circular wall of the base 205. The output end of the motor passes through one side of the base 205 and is fixed with a cam 209. The outer circular wall of the cam 209 is in contact with the bottom surface of the movable plate 207. Through this configuration, the operator places the powder bag 2 into the mounting cylinder 1, causing the powder bag 2 to slide into the corresponding partition 201 for engagement. The needle 202 is inserted into the connector of the powder bag 2, and the second needle 203 is slid into the upper partition 201 and locked in place. Then, the liquid bottle 3 is placed into the mounting cylinder 1, so that the second needle 203 pierces into the liquid bottle 3. Under the action of gravity, the saline in the liquid bottle 3 enters the powder bag 2 through the second needle 203, the first needle 202 and the delivery tube 204, and is initially mixed with the powder in the powder bag. At the same time, the operator starts the motor, which drives the cam 209 to rotate. When the cam 209 rotates, it periodically pushes the movable plate 207. The movable plate 207 reciprocates under the elastic force of the spring 208, applying a vibration effect to the powder and saline in the powder bag 2, accelerating dissolution and uniform mixing, thereby enabling rapid preparation and mixing of chemotherapy drugs, improving the preparation effect and efficiency of chemotherapy drugs.

[0024] In this embodiment, the outer circular wall of the second needle 203 is connected to and fixed with a vent tube 301. A filter membrane 302 is fixed inside the vent tube 301. The filter membrane 302 is a hydrophobic filter membrane. When the salt water in the liquid bottle 3 enters the powder bag 2, a negative pressure is formed inside the liquid bottle 3. Outside air enters the liquid bottle 3 through the filter membrane 302 to balance the internal and external pressures. At the same time, the filter membrane 302 prevents the liquid in the liquid bottle 3 from leaking through the vent tube 301.

[0025] In this embodiment, a flow valve 4 is slidably installed on the outer circular wall of the delivery pipe 204. The flow valve 4 is existing technology, and the user can control the brine delivery speed through the flow valve 4.

[0026] In this embodiment, a sliding notch 5 is provided on one side of each of the two partitions 201. The connector of the powder bag 2 is slidably disposed inside the lower sliding notch 5, and the second needle 203 is slidably disposed with the upper sliding notch 5. The second needle 203 and the liquid bag 2 can be slidably engaged through the sliding notch 5, which makes it convenient for the user to take the powder bag 2 and facilitates operation.

[0027] In this embodiment, the diameter of the base 205 is larger than the diameter of the mounting cylinder 1, and the base 205 can provide stable support for the device.

[0028] Working principle: In use, the operator places the powder bag 2 into the installation cylinder 1, allowing the powder bag 2 to slide into the corresponding partition 201 for engagement. The first needle 202 is inserted into the connector of the powder bag 2, and the second needle 203 is slid into the upper partition 201 for engagement. Then, the liquid bottle 3 is placed into the installation cylinder 1, allowing the second needle 203 to pierce into the liquid bottle 3. Under the action of gravity, the saline solution in the liquid bottle 3 passes through the second needle 203, the first needle 202, and the delivery tube 204 into the powder bag 2, where it undergoes preliminary mixing with the powder in the powder bag. Simultaneously, the operator starts the motor, which drives the cam 209 to rotate. As the cam 209 rotates, it periodically pushes the movable plate 20. 7. The movable plate 207 reciprocates under the elastic force of the spring 208, applying vibration to the powder and saline in the powder bag 2 to accelerate dissolution and uniform mixing. When the saline in the liquid bottle 3 enters the powder bag 2, a negative pressure is formed in the liquid bottle 3. Outside air enters the liquid bottle 3 through the filter membrane 302 to balance the internal and external pressure. At the same time, the filter membrane 302 prevents the liquid in the liquid bottle 3 from leaking through the vent pipe 301. The user can control the saline delivery speed through the flow valve 4. The second needle 203 and the liquid bag 2 can be slidably engaged through the sliding notch 5, making it easy for the user to pick up the powder bag 2 and operate. The base 205 can provide stable support for the device.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A closed-loop preparation device for chemotherapy drugs, comprising a mounting cylinder (1), characterized in that: The installation cylinder (1) is provided with a powder bag (2) and a liquid bottle (3) inside. The powder bag (2) and the liquid bottle (3) are arranged vertically. The installation cylinder (1) is provided with a configuration structure, which includes two partitions (201) fixed inside the installation cylinder (1). The connector of the powder bag (2) is slidably arranged inside the lower partition (201). The first needle (202) is slidably arranged inside the upper partition (201). The second needle (203) is slidably inserted into the connector of the powder bag (2). A delivery tube (204) is fixed between the first needle (202) and the second needle (203). The second needle (203) passes through the rubber stopper of the liquid bottle (3) and is slidably inserted into the interior of the liquid bottle (3).

2. The closed preparation device for chemotherapy drugs according to claim 1, characterized in that, The bottom end of the mounting cylinder (1) is fixed with a base (205). The top surface of the base (205) is provided with a mounting groove (206). The mounting groove (206) is located inside the mounting cylinder (1). A movable plate (207) is slidably arranged inside the mounting groove (206). The top surface of the movable plate (207) is in contact with the bottom surface of the powder bag (2). Several springs (208) are fixed on the bottom surface of the movable plate (207). The bottom ends of the several springs (208) are fixed to the bottom surface of the mounting groove (206). A motor is fixed on the outer circular wall of the base (205). The output end of the motor passes through one side of the base (205) and is fixed with a cam (209). The outer circular wall of the cam (209) is in contact with the bottom surface of the movable plate (207).

3. The closed-loop preparation device for chemotherapy drugs according to claim 2, characterized in that, The outer circular wall of the second needle (203) is connected to and fixed with an air tube (301), and a filter membrane (302) is fixed inside the air tube (301).

4. The closed-loop preparation device for chemotherapy drugs according to claim 3, characterized in that, A flow valve (4) is slidably installed on the outer circular wall of the conveying pipe (204).

5. The closed-loop preparation device for chemotherapy drugs according to claim 4, characterized in that, Each of the two partitions (201) has a sliding notch (5) on one side. The connector of the powder bag (2) is slidably disposed inside the lower sliding notch (5), and the second needle (203) is slidably disposed with the upper sliding notch (5).

6. The closed-loop preparation device for chemotherapy drugs according to claim 5, characterized in that, The diameter of the base (205) is larger than the diameter of the mounting cylinder (1).

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