Novel catheter for radial artery approach liver cancer interventional operation

Abstract

The utility model relates to the technical field of liver cancer treatment, in particular to a novel catheter for radial artery approach liver cancer interventional operation, which comprises a catheter body, one end of the catheter body is connected with an injection head, the other end of the catheter body is connected with an insertion head, and a hollow interlayer is arranged inside the catheter wall of the catheter body. A hollow interlayer is arranged in the pipe wall of the pipe body, a gas injection pipe is arranged in the hollow interlayer, one side of the injection head is connected with a supporting pipe, the supporting pipe communicates with the gas injection pipe through a connecting hole, the hollow interlayer is arranged in the pipe wall of the pipe body, gas can be injected into the inner wall of the hollow interlayer through the gas injection pipe, and when gas is injected into the hollow interlayer, certain supporting force can be exerted on the pipe body; the problems that due to the fact that the tube body is excessively twisted or bent in the moving process in the blood vessel, resistance is increased when the tube body moves, and the moving speed is decreased are solved, and due to the fact that the density of air is small, the tube body still has a certain bendable space, and the tube body can conveniently move in the blood vessel.

Description

Technical Field

[0001] The utility model relates to the technical field of liver cancer treatment, in particular to a novel catheter used for liver cancer interventional surgery via radial artery access. Background Art

[0002] Transarterial chemoembolization (TACE) is a widely used treatment for liver cancer. This intervention involves selectively or superselectively inserting a slender catheter into the artery supplying the liver tumor. An appropriate amount of chemotherapy drugs and embolic agents are then injected through the catheter to cut off the tumor's blood supply and nutrients, causing ischemia and necrosis. Compared with traditional femoral artery approach interventional surgery for liver cancer, radial artery approach interventional surgery for liver cancer provides higher postoperative comfort for patients, who can get out of bed immediately and take care of themselves, thus avoiding bed rest and immobilization. Therefore, it is more easily accepted by liver cancer patients, and also reduces the risk of deep vein thrombosis and pulmonary embolism caused by bed rest. In dust removal, interventional treatment mainly uses a slender catheter to be selectively or super-selectively inserted into the liver tumor supplying artery. An appropriate amount of chemotherapy drugs and embolic agents are injected through the catheter to cut off the blood supply and nutrition of the tumor, causing the tumor to be ischemic and necrotic. Patients who undergo hepatic artery catheterization via radial artery puncture can get out of bed and move around immediately after surgery without the need for pressure bandages or prolonged immobilization, which can significantly improve the patient's intraoperative and postoperative experience. A catheter is required during radial artery approach interventional surgery for liver cancer.

[0003] Existing technologies such as publication number CN215083913U provide a new catheter for radial artery access liver cancer interventional surgery, which includes a tube body, a curved catheter, a first catheter at the head end, and a second catheter at the head end. The angle between the first catheter at the head end and the second catheter at the head end can be shaped and adjusted, and the surface of the catheter is coated with a hydrophilic coating. The utility model is suitable for angiography of the hepatic artery during radial artery access liver cancer interventional surgery, can improve the success rate of radial artery access liver artery interventional surgery, shorten the surgical operation time, reduce the surgeon's intraoperative X-ray radiation time and radiation dose, reduce damage to the patient's blood vessels, fill the gap in the clinical lack of a dedicated catheter specifically for radial artery access liver cancer interventional surgery, and has good promotion prospects.

[0004] In this approach, a hydrophilic coating is applied to the outside of the catheter to improve its smoothness once it enters the human blood vessels, minimizing damage to the vessels. However, since the catheter is made of a soft material, it may twist during insertion, resulting in poor insertion and a prolonged insertion time. Therefore, we propose a new catheter for radial artery access liver cancer interventional surgery. Utility Model Content

[0005] The purpose of the utility model is to provide a new catheter for interventional surgery for liver cancer via radial artery access. The new catheter for interventional surgery for liver cancer via radial artery access solves the problem that when the catheter is inserted into a blood vessel, the catheter may be twisted to a certain extent, resulting in unsmooth insertion of the tube body.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A new catheter for interventional liver cancer surgery via radial artery access includes a tube body, one end of the tube body is connected to an injection head, the other end of the tube body is connected to an insertion head, a hollow partition is opened inside the tube wall of the tube body, an air injection tube is arranged inside the hollow partition, one side of the injection head is connected to a support tube, and the support tube is connected to the air injection tube through a connecting hole.

[0008] Preferably, the inner wall of the hollow partition is connected with a partition ring for dividing the space inside the hollow partition.

[0009] Preferably, a reflux hole is provided on the inner wall of the spacer ring, a conical diaphragm is provided on the inner wall of the reflux hole, and the conical diaphragm is composed of three fan-shaped diaphragms spliced ​​together.

[0010] Preferably, a liquid injection hole is provided on the inner wall of the injection head, and a sealing cap is provided on the top of the injection head.

[0011] Preferably, an air bag is provided at one end of the air injection tube, and a fastening ring is provided on the threaded sleeve on the outer wall of the air injection tube for fixing the air bag.

[0012] Preferably, a needle-shaped membrane is connected to the top of the insertion head, and the needle-shaped membrane is filled with solid metal alloy.

[0013] Preferably, an accommodating cavity is formed on the inner wall of the insertion head, and the accommodating cavity is connected with the interior of the needle-shaped membrane through a through hole.

[0014] By means of the above technical solution, the present invention provides a new catheter for radial artery access liver cancer interventional surgery, which has at least the following beneficial effects:

[0015] 1. The utility model provides a hollow partition inside the tube wall of the tube body, and gas can be injected into the inner wall of the hollow partition through the gas injection tube. When gas is injected into the hollow partition, a certain supporting force is exerted on the tube body to prevent the tube body from being excessively twisted or bent during movement in the blood vessel, which would increase the resistance to movement of the tube body and reduce the movement speed. In addition, since the density of air itself is relatively low, the tube body still has a certain amount of flexible space to facilitate movement in the blood vessel.

[0016] Second, the present invention facilitates insertion of the insertion head by filling the needle-shaped membrane with solid metal graft. After insertion, due to the low melting point of the solid metal graft, the human body temperature can melt it, causing the needle-shaped membrane to lose support and soften, thus preventing the needle-shaped membrane from scratching the blood vessel wall. In addition, the melted metal graft liquid will be squeezed into the accommodating cavity, thus preventing the metal graft liquid from remaining inside the needle-shaped membrane, causing the insertion head to become larger and affecting its movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0018] Figure 1 This is a diagram showing the overall structure and appearance of the utility model;

[0019] Figure 2 It is a partial cross-sectional view of the tube body in the utility model;

[0020] Figure 3 For this utility model Figure 2 A magnified view of point A;

[0021] Figure 4 It is a partial cross-sectional view of the injection head in the utility model;

[0022] Figure 5 It is a partial cross-sectional view of the insertion head in the present invention.

[0023] In the figure: 1. Tube body; 11. Hollow partition; 12. Spacer ring; 13. Support tube; 14. Reflux hole; 141. Conical diaphragm; 2. Injection head; 21. Liquid injection hole; 22. Sealing cap; 23. Air injection pipe; 24. Fastening ring; 25. Connecting hole; 3. Insertion head; 31. Needle-shaped membrane; 32. Accommodating cavity; 33. Through hole; 4. Airbag. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Example 1

[0026] A new catheter for radial artery access liver cancer interventional surgery, such as Figure 1-Figure 2As shown, it includes a tube body 1, one end of the tube body 1 is connected to an injection head 2, the other end of the tube body 1 is connected to an insertion head 3, a hollow partition 11 is opened inside the tube wall of the tube body 1, and an air injection pipe 23 is arranged inside the hollow partition 11. One side of the injection head 2 is connected to a support tube 13, and the support tube 13 is connected to the air injection pipe 23 through a connecting hole 25.

[0027] In this embodiment, a hollow partition 11 is provided inside the tube wall of the tube body 1, and gas can be injected into the inner wall of the hollow partition 11 through the gas injection tube 23. When gas is injected into the hollow partition 11, a certain supporting force will be exerted on the tube body 1 to prevent the tube body 1 from being excessively twisted or bent during movement in the blood vessel, which would cause the resistance of the tube body 1 to increase and the movement speed to decrease. Moreover, since the density of air itself is relatively low, the tube body 1 still has a certain amount of flexible space to facilitate movement in the blood vessel.

[0028] Example 2

[0029] like Figure 2 As shown, based on Example 1, preferably, the inner wall of the hollow partition 11 is connected with a partition ring 12 for dividing the space inside the hollow partition 11.

[0030] In this embodiment, by providing a spacer ring 12 in the hollow spacer 11, the space inside the hollow spacer 11 can be divided, and through the connection of the spacer ring 12, it is difficult for the inner and outer walls of the tube body 1 to produce a large displacement, thereby providing a certain stability for the overall structure of the tube body 1.

[0031] Example 3

[0032] like Figure 1 、 Figure 2 、 Figure 3 As shown, on the basis of Example 1, preferably, a reflux hole 14 is provided on the inner wall of the spacer ring 12, a conical diaphragm 141 is provided on the inner wall of the reflux hole 14, and the conical diaphragm 141 is composed of three fan-shaped diaphragms spliced ​​together, an injection hole 21 is provided on the inner wall of the injection head 2, and a sealing cap 22 is provided on the top of the injection head 2 to seal the injection hole 21 without using it to prevent contamination, an air bag 4 is provided at one end of the air injection tube 23, and a fastening ring 24 is provided on the outer wall thread of the air injection tube 23 for fixing the air bag 4.

[0033] In this embodiment, the airbag 4 is squeezed by hand, so that the air inside the airbag 4 is injected into the hollow partition 11 through the air injection tube 23, the connecting hole 25 and then the support tube 13. Since the partition ring 12 divides the space inside the hollow partition 11, the support tube 13 is filled in sequence from the space close to the insertion head 3. When the air in each space is saturated, the air will squeeze the fan-shaped diaphragm of the conical diaphragm 141 to open it to form a passage, filling the next space.

[0034] Example 4

[0035] like Figure 5 As shown, based on Example 1, preferably, a needle-shaped membrane 31 is connected to the top of the insertion head 3, and the needle-shaped membrane 31 is filled with solid metal graft, and an accommodating cavity 32 is opened on the inner wall of the insertion head 3, and the accommodating cavity 32 is connected to the interior of the needle-shaped membrane 31 through a through hole 33.

[0036] In this embodiment, solid metal graft is filled inside the needle-shaped membrane 31 to facilitate insertion of the insertion head 3. After insertion, due to the low melting point of the solid metal graft, the human body temperature can melt it. After melting, the needle-shaped membrane 31 loses its support and softens, preventing the needle-shaped membrane 31 from scratching the blood vessel wall. In addition, the melted metal graft liquid will be squeezed into the accommodating cavity 32, preventing the metal graft liquid from remaining inside the needle-shaped membrane 31, causing the insertion head 3 to become larger and affecting its movement.

[0037] The utility model is a new catheter for radial artery access liver cancer interventional surgery. When in use, the insertion head 3 is inserted into the blood vessel at the designated position. Since the interior of the needle-shaped membrane 31 is filled with solid metal graft, the insertion of the insertion head 3 is facilitated. After insertion, due to the low melting point of the solid metal graft, the temperature of the human body can melt it, and the needle-shaped membrane 31 loses its support and softens after melting, preventing the needle-shaped membrane 31 from scratching the blood vessel wall. The melted metal graft liquid will be squeezed into the accommodating cavity 32, preventing the metal graft liquid from remaining inside the needle-shaped membrane 31, causing the insertion head 3 to become larger and affecting the movement. When the tube body 1 moves, the air bag 4 can be squeezed by hand, so that the air inside the air bag 4 is injected through the air injection tube 23, the connecting hole 25 and then through the support tube 13. Inside the hollow partition 11, since the partition ring 12 divides the internal space of the hollow partition 11, the support tube 13 is filled in sequence from the space near the insertion head 3. When the air in each space is saturated, the air will squeeze the fan-shaped diaphragm of the conical diaphragm 141 to open it to form a passage and fill the next space. When the hollow partition 11 is injected with gas, it will provide a certain supporting force to the tube body 1 to avoid excessive twisting or bending of the tube body 1 during movement in the blood vessel, resulting in increased resistance when the tube body 1 moves, resulting in a decrease in movement speed. Moreover, since the density of the air itself is relatively low, the tube body 1 still has a certain flexible space to facilitate continued movement in the blood vessel. After moving to the designated position, the required liquid medicine can be injected through the injection hole 21.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new catheter for radial artery access liver cancer interventional surgery, comprising a tube body (1), characterized in that: One end of the tube body (1) is connected to an injection head (2), and the other end of the tube body (1) is connected to an insertion head (3). A hollow partition (11) is provided inside the tube wall of the tube body (1), and an air injection pipe (23) is provided inside the hollow partition (11). One side of the injection head (2) is connected to a support pipe (13), and the support pipe (13) is communicated with the air injection pipe (23) through a connecting hole (25).

2. The novel catheter for radial artery access liver cancer interventional surgery according to claim 1, characterized in that: The inner wall of the hollow partition (11) is connected with a partition ring (12) for dividing the space inside the hollow partition (11).

3. The novel catheter for radial artery access liver cancer interventional surgery according to claim 2, characterized in that: The inner wall of the spacer ring (12) is provided with a reflux hole (14), the inner wall of the reflux hole (14) is provided with a conical diaphragm (141), and the conical diaphragm (141) is composed of three fan-shaped diaphragms spliced ​​together.

4. The novel catheter for radial artery access liver cancer interventional surgery according to claim 3, characterized in that: The inner wall of the injection head (2) is provided with a liquid injection hole (21), and the top of the injection head (2) is sleeved with a sealing cap (22).

5. The novel catheter for radial artery access liver cancer interventional surgery according to claim 4, characterized in that: An air bag (4) is provided at one end of the air injection tube (23), and a fastening ring (24) is provided on the outer wall thread sleeve of the air injection tube (23) for fixing the air bag (4).

6. The novel catheter for radial artery access liver cancer interventional surgery according to claim 1, characterized in that: A needle-shaped membrane (31) is connected to the top of the insertion head (3), and the needle-shaped membrane (31) is filled with solid metal alloy.

7. The novel catheter for radial artery access liver cancer interventional surgery according to claim 6, characterized in that: An accommodating cavity (32) is provided on the inner wall of the insertion head (3), and the accommodating cavity (32) is communicated with the interior of the needle-shaped membrane (31) through a through hole (33).

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