Pipeline structure for chemotherapy
By designing a 6F vascular catheter sheath, dilator, and puncture needle, combined with medical-grade plastic and Seldinger catheterization technology, the pain and suturing issues associated with chemotherapy catheter structures during placement have been resolved, resulting in improved comfort and reduced costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUDAN UNIV SHANGHAI CANCER CENT
- Filing Date
- 2025-01-20
- Publication Date
- 2026-04-24
AI Technical Summary
Existing chemotherapy tubing structures cause pain and discomfort to patients during placement and are costly, especially the use of 14F biliary drainage tubes, which brings significant pain and difficulty in suturing the wound.
The design incorporates a 6F vascular catheter sheath, dilator, and puncture needle, combined with medical-grade plastic and Seldinger catheter placement technology to achieve minimally invasive procedures. It uses inexpensive polymer materials to ensure smooth and flexible catheter walls, reducing trauma and the need for sutures.
It significantly reduces patient pain and the need for wound suturing, improves comfort and lowers medical costs, and is suitable for minimally invasive procedures and chemotherapy drug delivery.
Smart Images
Figure CN224155735U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of chemotherapy equipment, specifically a chemotherapy tubing structure. Background Technology
[0002] A chemotherapy tubing structure is a medical device used in intraperitoneal hyperthermic perfusion chemotherapy, which ensures the precise delivery and continuous action of chemotherapy drugs, thereby contributing to patient recovery and prognosis.
[0003] In existing intraperitoneal hyperthermic chemotherapy, 14F biliary drainage tubes are mostly used. While 14F biliary drainage tubes have some application, their large diameter (approximately 4.6 mm) can easily cause significant pain and discomfort to patients during insertion. Furthermore, because an abdominal wall incision requires a scalpel, 14F biliary drainage tubes present numerous inconveniences in managing intraperitoneal fluid and in suturing the wound after removal, impacting postoperative recovery and quality of life for patients. Therefore, this invention provides a tubing structure for chemotherapy. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this invention provides a tubing structure for chemotherapy that offers advantages such as improved comfort and reduced medical costs, thus solving the problems of poor comfort and high medical costs.
[0006] (II) Technical Solution
[0007] To achieve the aforementioned goals of reducing pain, improving comfort, and lowering medical costs, this utility model provides the following technical solution:
[0008] A chemotherapy tubing structure includes a chemotherapy tubing bag, a 6F vascular catheter sheath, a dilator, and a puncture needle;
[0009] The chemotherapy tubing bag contains three independent components: a 6F vascular catheter sheath, a dilator, and a puncture needle. One end of the 6F vascular catheter sheath has a side arm, and the top end of the side arm has a catheter sheath connecting tube. The other end of the catheter sheath connecting tube has a three-way valve.
[0010] As a preferred embodiment of this utility model, one end of the expander is provided with a fixed seat, and one end of the fixed seat, located inside the expander, is provided with a traction rope.
[0011] As a preferred technical solution of this utility model, a delivery tube is provided at one end of the bottom of the puncture needle, and a puncture connection tube is provided at the other end of the delivery tube.
[0012] As a preferred embodiment of this utility model, the 6F vascular catheter sheath is made of medical-grade plastic material, and the diameter of the 6F vascular catheter sheath is approximately 2 mm.
[0013] As a preferred technical solution of this utility model, the 6F vascular catheter sheath adopts the Seldinger catheter placement technology, and the 6F vascular catheter sheath is provided with a guidewire inside, and the 6F vascular catheter sheath adopts a puncture hollow needle design inside.
[0014] As a preferred technical solution of this utility model, the inner wall of the 6F vascular catheter sheath is designed with a low-cost polymer material.
[0015] (III) Beneficial Effects
[0016] Compared with the prior art, this utility model provides a tubing structure for chemotherapy, which has the following beneficial effects:
[0017] This chemotherapy catheter structure, through the design of a 6F vascular catheter sheath, dilator, and puncture needle, improves clinical problems such as difficult catheter placement, significant pain, and the need for wound suturing after catheter removal during intraperitoneal hyperthermic chemotherapy. Furthermore, the 6F vascular catheter sheath, made of medical-grade plastic and incorporating Seldinger catheter placement technology and an internal hollow needle design, effectively solves the difficulties of difficult catheter placement, significant pain, and the need for suturing after catheter removal during intraperitoneal hyperthermic chemotherapy. Additionally, the inner wall of the 6F vascular catheter sheath is made of inexpensive polymer material, which not only makes the tube wall smooth and resilient, improving patient comfort and tolerance during placement, but also significantly reduces medical costs. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the top of the 6F vascular catheter sheath structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the 6F vascular catheter sheath Seldinger placement technique of this utility model.
[0021] In the diagram: 1. Chemotherapy tubing bag; 2. 6F vascular catheter sheath; 3. Dilator; 4. Puncture needle; 5. Side arm; 6. Catheter sheath connecting tube; 7. Three-way valve; 8. Fixation seat; 9. Traction rope; 10. Delivery tube; 11. Puncture connecting tube; 12. Guide wire. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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.
[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.
[0025] Please see Figure 1-3 ,
[0026] Example 1: A chemotherapy tubing structure includes a chemotherapy tubing bag 1, a 6F vascular catheter sheath 2, a dilator 3, and a puncture needle 4. The chemotherapy tubing bag 1 stores the tubing used for chemotherapy. Inside the chemotherapy tubing bag 1 are three independent components: the 6F vascular catheter sheath 2, the dilator 3, and the puncture needle 4. The 6F vascular catheter sheath 2 serves as the main catheter channel for delivering drugs or other therapeutic substances into the patient's body, particularly into blood vessels or body cavities. The dilator 3 is used to dilate tissue or blood vessels before inserting the 6F vascular catheter sheath to facilitate insertion. The puncture needle 4 is used to deliver drugs... The 6F vascular catheter sheath 2 is directly injected into the patient's body or connected to other infusion devices via a puncture connection tube. One end of the 6F vascular catheter sheath 2 is equipped with a side arm 5, which is located outside the patient and is used to connect additional tubing or devices. One end of the side arm 5 is equipped with a catheter sheath connection tube 6, which is used to connect the 6F vascular catheter sheath to other devices such as three-way valves, infusion bags, etc., to facilitate the delivery of drugs or fluids. The other end of the catheter sheath connection tube 6 is equipped with a three-way valve 7, which is used to control the flow of drugs or fluids and can be connected to multiple tubing to achieve the switching and mixing of different fluids or drugs.
[0027] In this embodiment, one end of the dilator 3 is provided with a fixing seat 8, which is used to fix the dilator and ensure that the dilator maintains a stable position during the dilation process. One end of the fixing seat 8, which is located inside the dilator 3, is provided with a traction rope 9, which is used to pull the dilator when needed so that the 6F vascular catheter sheath can be inserted more easily.
[0028] In this embodiment, a delivery tube 10 is provided at one end of the bottom of the puncture needle 4. This tube serves as a channel for delivering media, such as drugs, contrast agents, or other liquids from external devices into the patient's body, or for draining fluids (such as blood) from the body. The other end of the delivery tube 10 is provided with a puncture connection tube 11. The puncture connection tube 11 provides a reliable connection interface, enabling the delivery tube to be safely and securely connected to other medical devices (such as syringes, infusion pumps, pressure monitors, etc.), thereby ensuring the smooth progress of treatment.
[0029] In this embodiment, the 6F vascular catheter sheath 2 is made of medical-grade plastic material, which has thin walls and excellent flexibility. The diameter of the 6F vascular catheter sheath 2 is about 2mm, which is thinner than the existing 14F biliary drainage tube, making it more suitable for minimally invasive operations.
[0030] In this embodiment, the 6F vascular catheter sheath 2 is made of medical-grade plastic material. This material not only ensures the biocompatibility and safety of the product, but also gives the 6F vascular catheter sheath 2 a thin-walled design and excellent flexibility. This thin-walled design not only reduces the burden on the patient, but also improves the flexibility of the catheter, making it easier to pass through complex vascular structures, reducing the difficulty of operation and the patient's pain. The diameter of the 6F vascular catheter sheath 2 is about 2mm, which is smaller than the diameter of the existing 14F biliary drainage tube. This improvement makes the 6F vascular catheter sheath 2 more advantageous in minimally invasive operations, because it can pass through narrow vascular channels more easily, while reducing damage to surrounding tissues and the risk of bleeding.
[0031] In this embodiment, the 6F vascular catheter sheath 2 adopts the Seldinger placement technique, which eliminates the need for a second abdominal wall incision with a blade. The 6F vascular catheter sheath 2 is directly inserted into the abdominal cavity, significantly reducing the patient's pain and discomfort. The 6F vascular catheter sheath 2 is equipped with a guide wire 12, which serves as a guide for subsequent insertion of the 6F vascular catheter sheath. The 6F vascular catheter sheath 2 uses a hollow needle design, which allows for safe and effective insertion into the abdominal cavity regardless of whether there is fluid accumulation. This avoids the cumbersome procedure of performing artificial ascites infusion and removing the catheter again.
[0032] It should be noted that the Seedinger catheter placement technique involves gently inserting the guidewire 12 into a blood vessel or body cavity. After confirming that the guidewire 12 is correctly positioned and stable, the 6F vascular catheter sheath 2 is inserted. During insertion, the 6F vascular catheter sheath 2 is slowly and smoothly inserted into the blood vessel or body cavity along the guidewire 12. During the insertion process, it is necessary to ensure that the 6F vascular catheter sheath fits tightly with the guidewire to avoid guidewire slippage or 6F vascular catheter sheath twisting. Once the 6F vascular catheter sheath is successfully inserted and fixed, the guidewire 12 is gently withdrawn. At this point, the 6F vascular catheter sheath has become a channel for drug delivery or monitoring.
[0033] In this embodiment, the inner wall of the 6F vascular catheter sheath 2 is designed with a low-cost polymer material, making the 6F vascular catheter sheath 2 wall smooth and tough. During indwelling, the patient tolerates it better, with no obvious foreign body sensation, improving the comfort and experience of treatment. After treatment, the 6F vascular catheter sheath 2 can be removed without suturing the wound. Only a medical dressing needs to be applied, reducing the hassle of suturing and suture removal. Furthermore, the price of the 6F vascular catheter sheath 2 is lower, saving patients money and demonstrating good economic and social benefits.
[0034] It should be noted that during chemotherapy, the puncture site should first be thoroughly disinfected to reduce the risk of infection. A puncture needle (4) is used to make a skin puncture to establish a channel to the blood vessel. If necessary, the puncture site can be pre-dilated using a dilator (3) to facilitate the smooth entry of the 6F vascular catheter sheath (2) into the blood vessel. The fixation seat (8) and traction rope (9) of the dilator (3) help stabilize and control the operation of the dilator. Next, the 6F vascular catheter sheath (2) can be inserted. The 6F vascular catheter sheath (2) uses a Seldier... The Nger catheterization technique involves inserting a 6F vascular catheter sheath 2 into the blood vessel along the guidewire 12. The thin wall and flexibility of the 6F vascular catheter sheath 2 allow it to pass more easily through the bends in the blood vessel, reducing trauma and discomfort to the patient. After insertion, it is connected to a three-way valve 7 via the side arm 5 and the catheter sheath connecting tube 6 for subsequent drug delivery and monitoring. The three-way valve 7 is opened to deliver the drug into the patient's body through the 6F vascular catheter sheath 2. During delivery, blood return can be checked periodically through the three-way valve 7 to ensure the 6F vascular catheter sheath 2 remains unobstructed. After the chemotherapy drug delivery is complete, the three-way valve 7 is closed, and the 6F vascular catheter sheath 2 is carefully removed. A medical dressing is applied to the puncture site to reduce the risk of bleeding and infection. Due to the thin wall and flexibility of the 6F vascular catheter sheath 2, the patient usually experiences less pain when it is removed, and there is no need to suture the wound.
[0035] The beneficial effects of the above embodiments are as follows:
[0036] This chemotherapy catheter structure, through the design of a 6F vascular catheter sheath 2, dilator 3, and puncture needle 4, improves clinical problems such as difficult catheter placement, significant pain, and the need for wound suturing after catheter removal during intraperitoneal hyperthermic perfusion chemotherapy. At the same time, the 6F vascular catheter sheath 2, made of medical-grade plastic and combined with the Seldinger catheter placement technology and internal hollow needle design, effectively solves the problems of difficult catheter placement, significant pain, and the need for suturing after catheter removal during intraperitoneal hyperthermic perfusion chemotherapy. In addition, the inner wall of the 6F vascular catheter sheath 2 is made of inexpensive polymer material, which not only makes the tube wall smooth and tough, improving the patient's comfort and tolerance during indwelling, but also significantly reduces medical costs.
[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A chemotherapy tubing structure, comprising a chemotherapy tubing bag (1), a 6F vascular catheter sheath (2), a dilator (3), and a puncture needle (4); characterized in that The chemotherapy tubing bag (1) contains three independent components: a 6F vascular catheter sheath (2), a dilator (3), and a puncture needle (4). One end of the 6F vascular catheter sheath (2) is provided with a side arm (5), and one end of the top of the side arm (5) is provided with a catheter sheath connecting tube (6). The other end of the catheter sheath connecting tube (6) is provided with a three-way valve (7).
2. The tube structure for chemotherapy according to claim 1, wherein: One end of the expander (3) is provided with a fixing seat (8), and one end of the fixing seat (8) and inside the expander (3) is provided with a traction rope (9).
3. The conduit structure for chemotherapy according to claim 1, wherein: The puncture needle (4) has a delivery tube (10) at one end of its bottom and a puncture connection tube (11) at the other end of its delivery tube (10).
4. The tubing structure for chemotherapy according to claim 1, wherein: The 6F vascular catheter sheath (2) is made of medical-grade plastic material and has a diameter of approximately 2 mm.
5. The conduit structure for chemotherapy according to claim 1, wherein: The 6F vascular catheter sheath (2) adopts the Seldinger catheter placement technique, and the 6F vascular catheter sheath (2) is equipped with a guidewire (12) inside. The 6F vascular catheter sheath (2) adopts a puncture hollow needle design inside.
6. The tubing set for chemotherapy according to claim 1, wherein: The inner wall of the 6F vascular catheter sheath (2) is designed with inexpensive polymer materials.