Infusion apparatus for chemotherapy
By introducing a receiving chamber and an absorbent block into the chemotherapy infusion set to collect overflowing fluid, filtering the fluid through a connecting filter tube, and using a light-shielding sleeve to prevent light exposure, the problem of fluid overflow during chemotherapy infusion is solved, improving safety and drug stability.
Patent Information
- Application Number
- CN202520225342.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-02-13
AI Technical Summary
During chemotherapy infusions, toxic fluids can easily spill out when the IV needle is inserted or removed, causing skin injuries to patients or medical staff.
An infusion set was designed, comprising an infusion tube body, an insertion needle, a filter connecting tube, and a receiving cavity. The overflowing liquid is collected through the receiving cavity and the absorption block, the liquid is filtered through the filter connecting tube, and the light-shielding sleeve prevents light exposure, thereby improving safety and purity.
It effectively prevents the leakage of toxic liquids, protects the health of patients and medical staff, reduces environmental hazards, and improves the safety and drug stability of chemotherapy infusions.
Smart Images

Figure CN223746774U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical instrument technical field especially, it is a kind of infusion apparatus for chemotherapy. BACKGROUND
[0002] Chemotherapy is the common means of treating tumor. Chemotherapy attacks cancer cells by means of chemical drugs (i.e. chemotherapy drugs) to achieve the purpose of killing cancer cells or inhibiting their division and growth. In actual chemotherapy operation process, intravenous administration is a common way, and ordinary infusion apparatus and filter infusion apparatus become common appliances for executing this administration process.
[0003] Chemotherapy drugs are mostly toxic liquids. Such liquids not only have special properties, but also have strong corrosiveness. The quality and stability of infusion apparatus are required very high in chemotherapy infusion process. Once the infusion apparatus for chemotherapy has the conditions of not being sealed tightly and pipeline being damaged, these toxic liquids can flow out. Once these toxic liquids flow out and contact the skin of patient or medical staff, serious harm will be caused.
[0004] Through observation and analysis of chemotherapy operation process, it is found that one of the most common scenarios of toxic liquid flowing out is that medical staff inserts or pulls out medicine needle into or from infusion bag. In this process, due to limited operation space, unreasonable connection structure design of medicine bottle and infusion bag and other factors, a small amount of toxic liquid can easily overflow and flow down along infusion tube. The flowing down toxic liquid can cause skin injury of patient or medical staff. UTILITY MODEL CONTENT
[0005] In view of the above analysis, the utility model aims to provide an infusion apparatus for chemotherapy to solve the technical problem of skin injury of patient or medical staff caused by toxic liquid flowing out in existing chemotherapy infusion apparatus.
[0006] The purpose of the utility model is mainly realized through the following technical solutions:
[0007] An infusion apparatus for chemotherapy, comprising an infusion tube body, a first insertion needle, a second insertion needle, a filter communication tube and a receiving cavity, the first insertion needle is fixedly arranged at one end of the infusion tube body to be inserted into infusion bag, the second insertion needle is fixedly arranged at the other end of the infusion tube body to be inserted into human body, the filter communication tube is connected with the infusion tube body in parallel, and the receiving cavity is fixedly arranged on the infusion tube body and close to the first insertion needle.
[0008] The receiving cavity comprises a receiving cavity wall, a receiving cavity ridge and a liquid containing cavity, the receiving cavity wall is fixedly sleeved on the infusion tube body and the two are sealingly connected, the receiving cavity ridge is arranged on the edge of the receiving cavity wall, the liquid containing cavity is formed between the receiving cavity wall and the infusion tube body, and the liquid containing cavity is used for containing the liquid flowing out from the infusion bag and / or the first insertion needle.
[0009] Further, the receiving cavity further comprises an absorbing block, the absorbing block is fixedly arranged in the liquid containing cavity to absorb the liquid.
[0010] Further, the absorbing block comprises a first absorbing block, the first absorbing block is sleeved on the infusion tube body to absorb the liquid.
[0011] Further, the absorbing block further comprises a second absorbing block, the second absorbing block is sleeved on the infusion tube body and is located below the first absorbing block to absorb the liquid.
[0012] Further, a first on-off valve is arranged on the infusion tube body.
[0013] Further, the filter communication pipe comprises a first filter pipe, a first filter membrane layer and a second on-off valve, the first filter membrane layer is fixedly arranged in the first filter pipe to filter the liquid flowing therethrough, the first filter pipe is connected in parallel with the infusion tube body, the inflow end and the outflow end of the first filter pipe are located on the two sides of the first on-off valve respectively, and the second on-off valve is arranged on the first filter pipe.
[0014] Further, the filter communication pipe comprises a second filter pipe, a second filter membrane layer and a third on-off valve, the second filter membrane layer is fixedly arranged in the second filter pipe to filter the liquid flowing therethrough, the second filter pipe is connected in parallel with the infusion tube body, the inflow end and the outflow end of the second filter pipe are located on the two sides of the first on-off valve respectively, and the third on-off valve is arranged on the second filter pipe.
[0015] Further, the infusion device for chemotherapy further comprises a drip cavity and a flow regulating valve, the drip cavity is communicated on the infusion tube body, the flow regulating valve is sleeved on the infusion tube body, and the flow regulating valve is located downstream of the drip cavity.
[0016] Further, the infusion device for chemotherapy further comprises a three-way pipe, a first end of the three-way pipe is communicated with the infusion tube body, a second end of the three-way pipe is communicated with the inflow end of the drip cavity, and a third end of the three-way pipe is closed by a latex plug.
[0017] Further, the infusion device for chemotherapy further comprises a light shielding sleeve, which is sleeved on the infusion tube body.
[0018] The technical scheme of the utility model at least can realize following effect one:
[0019] (1) the utility model discloses a infusion device for chemotherapy, including infusion tube body, first insert needle, second insert needle, filter communication pipe and receiving cavity, receiving cavity includes receiving cavity wall, receiving cavity stop along and liquid containing cavity, receiving cavity wall fixedly sleeved on infusion tube body, receiving cavity stop along sets up on the edge of receiving cavity wall, forms liquid containing cavity between receiving cavity wall and infusion tube body, and liquid containing cavity is used for receiving the liquid that flows from infusion bag and / or first insert needle, receiving cavity is fixedly arranged on infusion tube body, is used for receiving the liquid that flows from infusion bag and / or first insert needle to prevent liquid overflow, effectively avoid the liquid that flows from infusion bag and / or first insert needle and skin direct contact, can collect the liquid that flows due to improper operation or infusion bag breakage through the liquid containing cavity of receiving cavity, prevent liquid from contacting skin or clothes, reduce the harm to patient and medical staff, through the sealing connection of receiving cavity wall and infusion tube body, further reduce the risk of liquid extravasation.
[0020] (2) the utility model discloses a infusion device for chemotherapy, and the absorption block includes first absorption block, and first absorption block is sleeved on infusion tube body to absorb liquid, and first absorption block is conical structure, surrounds on infusion tube body, can effectively absorb and fix the liquid that flows, reduce the risk of liquid overflow, improve the safety and environmental protection of chemotherapy infusion, protect the health of patient and medical staff, reduce the potential harm to the environment.
[0021] (3) the utility model discloses a infusion device for chemotherapy, and the filter communication pipe includes first filter tube, first filter membrane layer and second on-off valve, can realize the filtration control of liquid, improves the purity of conveying liquid.
[0022] (4) the utility model discloses a infusion device for chemotherapy further includes light shielding sleeve, and the light shielding sleeve is sleeved on the infusion tube body, the light shielding sleeve can prevent light from directly irradiating the medicine in the infusion tube, avoid the photo degradation, oxidation and other reactions of medicine due to light, thereby, guarantee the curative effect of medicine.
[0023] In the utility model, the above technical schemes can be combined with each other to realize more preferred combination schemes. Other features and advantages of the utility model will be described in the subsequent specification, and some advantages can become apparent from the specification or be understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the contents specifically pointed out in the specification and drawings. BRIEF DESCRIPTION OF DRAWINGS
[0024] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and are used to explain the principles of the present application, but not limit the scope of the present application.
[0025] Figure 1 Structure diagram of the infusion apparatus for chemotherapy in the embodiments of the present application;
[0026] Figure 2 Structure diagram of the receiving cavity in the embodiments of the present application;
[0027] Figure 3 Structure diagram of the absorbing block in the embodiments of the present application;
[0028] Figure 4 Structure diagram of the filtering communication pipe in the embodiments of the present application.
[0029] Reference signs:
[0030] 1-infusion pipe body, 11-first on-off valve, 12-droplet cavity, 121-three-way pipe, 13-flow regulating valve;
[0031] 2-first insertion needle;
[0032] 3-second insertion needle;
[0033] 4-filtering communication pipe, 41-first filtering pipe, 42-first filtering membrane layer, 43-second on-off valve, 44-second filtering pipe, 45-second filtering membrane layer, 46-third on-off valve;
[0034] 5-receiving cavity, 51-receiving cavity wall, 52-receiving cavity stopper, 53-liquid containing cavity, 54-absorbing block, 541-first absorbing block, 542-second absorbing block. DETAILED DESCRIPTION
[0035] The preferred embodiments of the present application will be described in detail below with reference to the drawings, wherein the drawings constitute a part of the present application and are used to explain the principles of the present application, but not limit the scope of the present application.
[0036] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific embodiments.
[0037] As Figure 1 and Figure 2As shown, the utility model embodiment provides a kind of infusion set for chemotherapy, including infusion tube body 1, first insertion needle 2, second insertion needle 3, filter communication pipe 4 and receiving cavity 5, first insertion needle 2 is fixedly arranged at one end of infusion tube body 1 to insert infusion bag, second insertion needle 3 is fixedly arranged at the other end of infusion tube body 1 to insert into human body, filter communication pipe 4 is parallel with infusion tube body 1, receiving cavity 5 is fixedly arranged on infusion tube body 1, and close to first insertion needle 2;Receiving cavity 5 includes receiving cavity wall 51, receiving cavity stop 52 and liquid containing cavity 53, receiving cavity wall 51 is fixedly sleeved on infusion tube body 1, and both sealing connection, receiving cavity stop 52 is arranged on the edge of receiving cavity wall 51, receiving cavity wall 51 and infusion tube body 1 form liquid containing cavity 53, liquid containing cavity 53 is used to hold the liquid that flows from infusion bag and / or first insertion needle 2.
[0038] Infusion tube body 1 as the main structure of entire infusion set, for connecting infusion bag and patient, provides infusion channel, so that drug can be delivered to human body, in addition, as main structure, infusion tube body 1 can also provide installation base for other components, for example, infusion tube body 1 adopts polyolefin material.
[0039] First insertion needle 2 is fixedly arranged at one end of infusion tube body 1, for inserting infusion bag, ensure that drug solution can flow from infusion bag into infusion tube body 1, specifically, first insertion needle 2 can adopt plastic material, first insertion needle 2 and infusion tube body 1 are connected by luer joint, the tail of first insertion needle 2 can be designed as luer male head, taper, and with external thread;One end of infusion tube body 1 is equipped with luer female head, the tapered inner hole, and with internal thread.
[0040] Second insertion needle 3 is fixedly arranged at the other end of infusion tube body, for inserting into patient's body (usually blood vessel), and infusing drug solution into patient's body, needle seat is arranged on second insertion needle 3 at the position away from needle tip, and needle seat is used to connect second insertion needle 3 with infusion tube body 1, and needle seat is used for medical staff to hold and operate;For example, needle seat can be connected together with infusion tube body 1 by injection molding or bonding process, and second insertion needle 3 can adopt stainless steel material.
[0041] The filter communication pipe 4 is connected in parallel with the infusion pipe body and is used for filtering the particulate impurities in the infusion. Generally, the chemotherapeutic drugs for treating cancer usually have strong toxicity and irritancy. In the embodiment, the filter communication pipe 4 is used for removing the particulate matter. The chemotherapeutic drugs may generate small particles during preparation and transmission. If the particles enter the blood circulation, the patient may be harmed. The filter communication pipe 4 can effectively intercept the particles and reduce the risk of complications. The filter communication pipe 4 is used for protecting the blood vessels. Since the chemotherapeutic drugs generally have irritancy, the intravenous wall may be damaged. By the filter communication pipe 4, the direct irritation of the drugs to the blood vessels can be reduced, so that the health of the veins of the patient is protected. The filter communication pipe 4 can improve the treatment effect. The filtration of the filter communication pipe 4 helps to maintain the stability and activity of the drugs, so that the treatment effect can be improved. The filter communication pipe 4 can prevent allergic reactions and other adverse reactions. The filter communication pipe 4 can help to reduce the by-products or impurities related to the drugs, which can reduce the allergic reactions or other adverse reactions of the patient.
[0042] The receiving cavity 5 is fixedly arranged on the infusion pipe body and is used for containing the liquid flowing out from the infusion bag and / or the first insertion needle 2 to prevent the liquid from overflowing. The receiving cavity 5 can effectively avoid the direct contact of the liquid flowing out from the infusion bag and / or the first insertion needle 2 with the skin. The liquid containing cavity 53 of the receiving cavity 5 can collect the liquid flowing out due to improper operation or damage of the infusion bag, so as to prevent the liquid from contacting the skin or clothes and reduce the harm to the patient and medical staff. The sealing connection of the receiving cavity wall 51 and the infusion pipe body 1 can further reduce the risk of liquid extravasation. Thus, the technical problem of skin injury of the patient or medical staff caused by the flowing out of the toxic liquid is solved.
[0043] In a preferred embodiment of the utility model, as shown in Figure 3 The receiving cavity 5 further includes the absorbing block 54. The absorbing block 54 is fixedly arranged in the liquid containing cavity 53 to absorb the liquid. The absorbing block 54 is fixedly arranged in the liquid containing cavity 53 and is used for absorbing the collected liquid. Thus, the absorbing block 54 can further reduce the risk of liquid overflow and reduce the accumulation of the liquid in the containing cavity. The absorbing block 54 can further improve the safety and make the liquid in the liquid containing cavity 53 easy to handle.
[0044] In a preferred embodiment of the utility model, as shown in Figure 3As shown, the absorption block 54 includes a first absorption block 541 sleeved on the infusion tube body 1 to absorb liquid, wherein the first absorption block 541 is made of activated carbon or bentonite material, and specifically, the first absorption block 541 is a conical structure surrounding the infusion tube body 1. By using activated carbon or bentonite material and designing the first absorption block 541 as a conical structure, the first absorption block 541 can effectively absorb and fix the inflowing liquid, reduce the risk of liquid overflow, improve the safety and environmental protection of chemotherapy infusion, protect the health of patients and medical staff, and reduce the potential harm to the environment.
[0045] On this basis, as shown in Figure 3 the absorption block 54 further includes a second absorption block 542 sleeved on the infusion tube body 1 and located below the first absorption block 541 to absorb liquid. The second absorption block 542 is a circular ring structure with a thickness and can also be made of activated carbon or bentonite material. The inner ring of the second absorption block 542 is sleeved on the infusion tube body 1, the outer ring of the second absorption block 542 is located outside the first absorption block 541, the upper surface of the second absorption block 542 is close to the first absorption block 541, and the lower surface of the second absorption block 542 is in abutment with the bottom of the receiving cavity wall 51. The second absorption block 542 cooperates with the first absorption block 541 to further enhance the adsorption capacity of the absorption block 54 for leaked liquid. The circular ring structure of the second absorption block 542 enables it to uniformly surround the infusion tube body 1, preventing the liquid from spreading downward along the outer wall of the infusion tube, thereby reducing the risk of the liquid contacting the skin or clothes. The second absorption block 542 is located below the first absorption block 541 for secondary adsorption. Even if the first absorption block 541 fails to completely absorb the leaked liquid, the second absorption block 542 can further intercept the liquid, reducing the risk of overflow.
[0046] In a preferred embodiment of the present application, as shown in Figure 1 the infusion tube body 1 is provided with a first on-off valve 11 for controlling the flow of liquid in the infusion tube body 1 through switching operation. When it is necessary to stop infusion, closing the first on-off valve 11 can cut off the liquid passage to prevent the liquid from continuing to flow.
[0047] On this basis, as shown in Figure 4 the filter communication pipe 4 includes a first filter pipe 41, a first filter membrane layer 42, and a second on-off valve 43. The first filter membrane layer 42 is fixedly arranged in the first filter pipe 41 to filter the flowing liquid. The filter pore size of the first filter membrane layer 42 is 5 μm. The first filter pipe 41 is connected in parallel to the infusion tube body 1, and the inflow end and outflow end of the first filter pipe 41 are located on the two sides of the first on-off valve 11, respectively. The second on-off valve 43 is arranged on the first filter pipe 41.
[0048] Specifically, the first filter tube 41 is a component of the filter communication tube 4, used to accommodate and fix the first filter membrane layer 42, and provide a flow channel for the liquid in addition to the infusion tube body 1, the first filter tube 41 is connected in parallel with the infusion tube body 1, when the liquid needs to be filtered through the first filter tube 41, the second on-off valve 43 is opened, and the first on-off valve 11 is closed, the liquid from the infusion tube body 1 flows into the first filter tube 41, and is filtered by flowing through the first filter membrane layer 42; the first filter membrane layer 42 is fixedly arranged in the first filter tube 41, and the filter pore size thereof is 5 μm, the filter membrane layer with the pore size of 5 μm can effectively remove larger particulate impurities; through the cooperation of the first filter tube 41, the first filter membrane layer 42 and the second on-off valve 43, the filtering control of the liquid is realized, and the purity of the delivered liquid is improved.
[0049] Further, the filter communication tube 4 comprises a second filter tube 44, a second filter membrane layer 45 and a third on-off valve 46, the second filter membrane layer 45 is fixedly arranged in the second filter tube 44 to filter the liquid flowing therethrough, the filter pore size of the second filter membrane layer 45 is 0.22 μm, the second filter tube 44 is connected in parallel with the infusion tube body 1, and the inflow end and the outflow end of the second filter tube 44 are located on the two sides of the first on-off valve 11 respectively, and the third on-off valve 46 is arranged on the second filter tube 44.
[0050] Specifically, the second filter tube 44 is used to accommodate and fix the second filter membrane layer 45, and provide another flow channel for the delivered liquid, the second filter tube 44 is connected in parallel with the infusion tube body 1, so that the liquid can be filtered through the second filter tube 44, the second filter membrane layer 45 is fixedly arranged in the second filter tube 44, and is used to filter the liquid flowing therethrough, the filter pore size of the second filter membrane layer 45 is 0.22 μm, which belongs to the ultrafiltration or bacteria removal filtration level, and can effectively remove impurities such as bacteria, viruses and tiny particles in the liquid, for example, in the infusion of chemotherapy drugs, the filter membrane with the pore size of 0.22 μm is often used for bacteria removal filtration, to ensure the sterility of the infusion; the third on-off valve 46 is arranged on the second filter tube 44, and is used to control the flow of the delivered liquid in the second filter tube 44, when the sterile filtration operation is needed, the third on-off valve 46 is opened, the second on-off valve 43 and the first on-off valve 11 are closed, the liquid flows into the second filter tube 44 and is filtered by the second filter membrane layer 45, when no filtration is needed, the third on-off valve 46 is closed, and the liquid flows through the infusion tube body 1 or the second filter tube 44.
[0051] In the preferred embodiment of the utility model, as shown in Figure 1As shown, the infusion device for chemotherapy also includes a drip chamber 12 and a flow regulating valve 13, the drip chamber 12 is communicated on the infusion tube body 1, the flow regulating valve 13 is sleeved on the infusion tube body 1, and the flow regulating valve 13 is located downstream of the drip chamber 12; the drip chamber 12 is a functional component for observing the infusion speed and the liquid flow state in the infusion device, located in the middle section of the infusion tube body 1, the drip chamber 12 is of transparent material, such as pvc, medical staff can observe the dripping condition of the liquid, and can estimate the infusion speed according to the dripping condition, the flow regulating valve 13 is a functional component for controlling the infusion speed, located downstream of the drip chamber 12, but not limited to this, the flow regulating valve 13 can also be arranged upstream of the drip chamber 12 in the embodiment, the drip chamber 12 can obtain the infusion state through intuitive drip observation, and the flow regulating valve 13 ensures the safety and effectiveness of drug infusion by controlling the infusion speed.
[0052] On this basis, as shown, Figure 1 As shown, the infusion device for chemotherapy also includes a three-way pipe 121, a first end of the three-way pipe 121 is communicated with the infusion tube body 1, a second end of the three-way pipe 121 is communicated with an inflow end of the drip chamber 12, and a third end of the three-way pipe 121 is closed by a latex plug; the third end serves as a spare port or a reserved port, when needed, the latex plug can be removed, and other equipment or pipelines can be connected, for example, the third end can be connected with a syringe, for adding drugs or injecting other liquids during the infusion process; the third end can be connected with other infusion tubes, for simultaneously infusing multiple drugs or liquids.
[0053] In a preferred embodiment of the utility model, the infusion device for chemotherapy also includes a light-shielding sleeve, the light-shielding sleeve is sleeved on the infusion tube body 1; the main function of the light-shielding sleeve is to prevent light from directly irradiating the drugs in the infusion tube, to avoid the drugs from being subjected to photo-degradation, oxidation and other reactions due to light irradiation, to cause the change of drug components, to reduce drug efficacy or to produce toxicity, for example, certain chemotherapy drugs will decompose or deteriorate under light irradiation, affecting the treatment effect.
[0054] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.
Claims
1. An infusion set for use in chemotherapy, characterized in that The infusion tube body (1), the first insertion needle (2), the second insertion needle (3), the filter communication tube (4) and the receiving cavity (5), the first insertion needle (2) is fixedly arranged at one end of the infusion tube body (1) to be inserted into the infusion bag, the second insertion needle (3) is fixedly arranged at the other end of the infusion tube body (1) to be inserted into the human body, the filter communication tube (4) is parallel to the infusion tube body (1), and the receiving cavity (5) is fixedly arranged on the infusion tube body (1) and close to the first insertion needle (2); The receiving cavity (5) includes a receiving cavity wall (51), a receiving cavity stop edge (52) and a liquid containing cavity (53), the receiving cavity wall (51) is fixedly sleeved on the infusion tube body (1) and is in sealed connection with the infusion tube body (1), the receiving cavity stop edge (52) is arranged on the edge of the receiving cavity wall (51), the liquid containing cavity (53) is formed between the receiving cavity wall (51) and the infusion tube body (1), and the liquid containing cavity (53) is used for containing the liquid flowing out from the infusion bag and / or the first insertion needle (2).
2. The infusion set for chemotherapy according to claim 1, wherein The receiving cavity (5) further includes an absorbing block (54), and the absorbing block (54) is fixedly arranged in the liquid containing cavity (53) to absorb the liquid.
3. The infusion set for chemotherapy according to claim 2, wherein The absorbing block (54) includes a first absorbing block (541), and the first absorbing block (541) is sleeved on the infusion tube body (1) to absorb the liquid.
4. The infusion set for chemotherapy according to claim 3, wherein The absorbing block (54) further includes a second absorbing block (542), and the second absorbing block (542) is sleeved on the infusion tube body (1) and located below the first absorbing block (541) to absorb the liquid.
5. The infusion set for chemotherapy according to claim 1, wherein A first on-off valve (11) is arranged on the infusion tube body (1).
6. The infusion set for chemotherapy according to claim 5, wherein The filter communication tube (4) includes a first filter tube (41), a first filter membrane layer (42) and a second on-off valve (43), the first filter membrane layer (42) is fixedly arranged in the first filter tube (41) to filter the liquid flowing through, the first filter tube (41) is parallel to the infusion tube body (1), the inflow end and the outflow end of the first filter tube (41) are located on the two sides of the first on-off valve (11) respectively, and the second on-off valve (43) is arranged on the first filter tube (41).
7. The infusion set for chemotherapy according to claim 6, characterized in that, The filter communication tube (4) includes a second filter tube (44), a second filter membrane layer (45) and a third on-off valve (46), the second filter membrane layer (45) is fixedly arranged in the second filter tube (44) to filter the liquid flowing through, the second filter tube (44) is parallel to the infusion tube body (1), the inflow end and the outflow end of the second filter tube (44) are located on the two sides of the first on-off valve (11) respectively, and the third on-off valve (46) is arranged on the second filter tube (44).
8. The infusion set for chemotherapy according to claim 1, wherein The infusion apparatus for chemotherapy further comprises a drip chamber (12) communicated on the infusion tube body (1) and a flow regulating valve (13) sleeved on the infusion tube body (1), and the flow regulating valve (13) is located downstream of the drip chamber (12).
9. The infusion set for chemotherapy according to claim 8, characterized in that, The infusion apparatus for chemotherapy further comprises a three-way pipe (121), a first end of the three-way pipe (121) is communicated with the infusion tube body (1), a second end of the three-way pipe (121) is communicated with an inflow end of the drip chamber (12), and a third end of the three-way pipe (121) is closed by a latex plug.
10. The infusion set for chemotherapy according to claim 1, wherein The infusion apparatus for chemotherapy further comprises a light shielding sleeve sleeved on the infusion tube body (1).