Balloon angiography catheter

Abstract

The utility model relates to the field of medical treatment, in particular to a balloon angiography catheter which comprises a catheter body and a balloon arranged at the far end of the catheter body, the balloon is a compliant balloon, and a catheter body at the far end of the catheter body is arranged to be a moldable shaping section. The catheter comprises an outer tube and an inner tube, the outer tube and the inner tube are coaxially arranged, a through cavity is formed between the outer tube and the inner tube, the far-end tip of the through cavity is a closed surface, the balloon is arranged on the outer tube, and a balloon cavity of the balloon is communicated with the through cavity, so that when gas is introduced into the through cavity, the balloon expands the through cavity to be used for injecting liquid or introducing a guide wire; due to the fact that the angiographic catheter is provided with the plurality of angiographic holes, even if the angiographic catheter is not well fixed to an ideal aorta angiographic position, contrast agents can be normally conveyed, PDA development is facilitated, part of the side holes are located on the pulmonary artery side of the arterial catheter, the contrast agents flowing out of the pulmonary artery holes are not prone to interfering with PDA development, and the angiographic catheter is convenient to use. The angiographic catheter is beneficial to PDA development.

Description

Technical Field

[0001] The utility model relates to the medical field, in particular to a balloon angiography catheter. Background Art

[0002] As we all know, coronary angiography is a common and effective method for diagnosing coronary atherosclerotic heart disease (CHD). It is a relatively safe and reliable invasive diagnostic technology. It is now widely used in clinical practice and is considered the "gold standard" for diagnosing CHD. The angiography catheter is a key device for percutaneous angiography. It should have appropriate hardness, elasticity, softness and torque; it should have good X-ray transparency; it should have good shape memory, smooth tube wall, high angiography performance, and thrombosis performance should be controlled to the lowest range. The angiography catheter is a long rubber tube, and its main function is to provide a tube guide so that the contrast agent can be smoothly introduced into the blood vessel to produce an angiography effect. Therefore, an angiography catheter should have the following basic conditions: the inner tube is smooth and can produce high flow; the imaging performance is high; the non-traumatic head end must have extremely high prototype retention performance and is not easy to deform; it can allow the guide wire to pass easily, etc.

[0003] A Chinese patent discloses a vascular angiography catheter and angiography device (authorization announcement number CN 114699623B). The patented technology can facilitate the catheter body to bend in a circuitous manner in the blood vessel toward the side of the catheter end, reduce the impact on the blood vessel, reduce the patient's discomfort, and improve the efficiency of angiography. However, due to the problem that the distal end of the coronary sinus angiography balloon catheter has a single curved shape and the curved shape cannot be visualized in the body, the catheter is difficult to operate when used and cannot be applied to all patients, affecting the efficiency of the operation. In addition, the contrast agent flowing out from the pulmonary artery orifice is likely to interfere with the PDA development, making it difficult to see the specific shape and size of the PDA, and thus it is difficult to select a suitable model of PDA occluder.

[0004] Therefore, those skilled in the art provide a balloon angiography catheter to solve the problems raised in the above background technology. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a balloon angiography catheter, comprising a catheter and a balloon arranged at the distal end of the catheter, wherein the balloon is a compliant balloon, and the distal end tube body of the catheter is arranged as a plastic shaping section;

[0006] The catheter comprises an outer tube and an inner tube, the outer tube and the inner tube are coaxially arranged, a through cavity is arranged between the outer tube and the inner tube, the distal end of the through cavity is a closed surface, a balloon is arranged on the outer tube and the balloon cavity is connected with the through cavity, when gas is introduced into the through cavity, the balloon expands the through cavity for injecting liquid or passing a guide wire;

[0007] The interior of the catheter is provided with a contrast cavity, and the top of the contrast delivery cavity is provided with a plurality of second contrast holes;

[0008] The catheter is provided with two branches, namely a balloon filling end and an infusion end, and both the balloon filling end and the infusion end have through holes.

[0009] Preferably: the hardness of the proximal tube body of the catheter is greater than the hardness of the rest of the catheter body, so that the operator can adjust the direction of the shaping section by twisting the proximal tube body of the catheter. The hardness of the catheter body specifically decreases gradually from the proximal end of the catheter to the distal end of the catheter. The hardness of the proximal tube body of the catheter can be selected from a material of about 70D, such as Pebax (nylon elastomer) 72D, nylon, PU (polyurethane) 75D, etc.

[0010] Preferably: the distal end of the catheter is configured as a shaping segment, which allows the operator to adjust the curvature of the shaping segment according to the position and shape of the patient's coronary sinus ostium, thereby improving the adaptability of the catheter and enabling it to smoothly pass through the patient's coronary sinus ostium. The shaping segment is provided with development marks arranged at axial intervals along the shaping segment, so that the position of the balloon and the state of the shaping segment in the body can be observed by X-ray, thereby improving the efficiency of the operation.

[0011] Preferably: the developing mark can be spread all over the shaping section, so that the shaping section can be fully observed, the developing marks are arranged at equal distances, and the spacing between two adjacent developing marks can be set according to clinical needs, the catheter is connected to a connector, and a plurality of first angiography holes are arranged at the top of the catheter, and the plurality of first angiography holes are evenly distributed in a circular shape, the developing mark is arranged on the tube body of the inner tube, which plays a developing role and can prevent the developing mark from falling off, but the utility model is not limited to this, the developing mark can also be embedded in the tube body of the outer tube, the shaping section is made of a high molecular polymer material, and by adjusting the curvature of the shaping section, the curvature can be adjusted to a certain extent according to the characteristics of the patient's coronary sinus, so that the product can enter the coronary sinus orifice more easily, and the filling end and the infusion end are Luer inner cone connectors, which can ensure that the guide wire can be inserted more conveniently.

[0012] Technical effects and advantages of the utility model:

[0013] 1. The utility model provides a plurality of angiography holes, so that even if the angiography catheter is not well fixed at the ideal aortic angiography position, the contrast agent can be normally delivered, thereby facilitating PDA development. Moreover, some side holes are located on the pulmonary artery side of the arterial catheter, and the contrast agent flowing out of the pulmonary artery hole is not easy to interfere with PDA development. The angiography catheter is conducive to PDA development.

[0014] 2. The utility model has the following advantages: it has a more adaptable reshapeable shaping section, which provides doctors with more curvature options. Doctors can adjust the curvature to a certain extent according to the characteristics of the patient's coronary sinus, making it easier for the product to enter the coronary sinus orifice. The equidistant development marks also have a certain measurement function, which is convenient for doctors to judge the depth of the catheter inserted into the coronary vein. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a balloon angiography catheter provided in an embodiment of the present application. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the structure of a balloon angiography catheter provided in an embodiment of the present application. Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the structure of a balloon angiography catheter provided in an embodiment of the present application. Figure 3 ;

[0018] Figure 4 It is a structural schematic diagram of a shaping section in a balloon angiography catheter provided in an embodiment of the present application;

[0019] Figure 5 A balloon angiography catheter provided in the embodiment of the present application Figure 4 The structural diagram at A in the middle;

[0020] Figure 6 A balloon angiography catheter provided in the embodiment of the present application Figure 3 Schematic diagram of the structure at B in the figure.

[0021] In the figure: 1. catheter; 2. balloon; 3. guide wire; 4. shaping section; 5. inner tube; 6. development mark; 7. through cavity; 8. connector; 9. filling end; 10. infusion end; 11. first angiography hole; 12. second angiography hole. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0023] Example 1

[0024] See also Figures 1 to 6In this embodiment, a balloon angiography catheter is provided, comprising a catheter 1 and a balloon 2 arranged at the distal end of the catheter 1, wherein the balloon 2 is a compliant balloon 2, the distal end tube body of the catheter 1 is configured as a plastic shaping section 4, the hardness of the proximal end tube body of the catheter 1 is greater than the hardness of the rest of the tube body of the catheter 1, so that the operator can adjust the direction of the shaping section 4 by twisting the proximal end tube body of the catheter 1, and the hardness of the tube body of the catheter 1 is specifically that the hardness gradually decreases from the proximal end of the catheter 1 toward the distal end of the catheter 1;

[0025] The hardness of the proximal tube body of the catheter 1 can be selected from a material of about 70D, such as Pebax (nylon elastomer) 72D, nylon, PU (polyurethane) 75D, etc.;

[0026] The distal end of the catheter 1 is set as a shaping section 4, so that the surgeon can adjust the curvature of the shaping section 4 according to the position and shape of the patient's coronary sinus ostium, thereby improving the adaptability of the catheter 1 and enabling it to smoothly pass through the patient's coronary sinus ostium. The shaping section 4 is provided with imaging marks 6 arranged at intervals along the axial direction of the shaping section 4, so that the position of the balloon and the state of the shaping section 4 in the body can be observed through X-rays, thereby improving the efficiency of the operation; specifically, the imaging marks 6 can be spread all over the shaping section 4, so that the shaping section 4 can be fully observed, the imaging marks 6 are arranged at equal intervals, and the spacing between two adjacent imaging marks 6 can be set according to clinical needs, the catheter 1 includes an outer tube and an inner tube 5, the outer tube and the inner tube 5 are coaxially arranged, a through cavity 7 is provided between the outer tube and the inner tube 5, the distal end of the through cavity 7 is a closed surface, the balloon 2 is arranged on the outer tube and the balloon cavity of the balloon 2 is connected to the through cavity 7, so that when gas is introduced into the through cavity 7, the balloon 2 expands the through cavity 7 for injecting liquid or passing a guide wire;

[0027] The catheter 1 is connected with a connector 8, and the top of the catheter 1 is provided with a plurality of first imaging holes 11, which are evenly distributed in a circular shape. The interior of the catheter 1 is provided with an imaging cavity, and the top of the imaging delivery cavity is provided with a plurality of second imaging holes 12;

[0028] The developing mark 6 is arranged on the tube body of the inner tube 5, which plays a developing role and can prevent the developing mark 6 from falling off, but the utility model is not limited to this. The developing mark 6 can also be embedded in the tube body of the outer tube. The shaping section 4 is made of a high molecular polymer material. By adjusting the curvature of the shaping section 4, the curvature can be adjusted to a certain extent according to the characteristics of the patient's coronary sinus, so that the product is easier to enter the coronary sinus orifice;

[0029] The catheter 1 is provided with two branches, namely a balloon filling end 9 and an infusion end 10, both of which have through holes. In the present utility model, the filling end 9 and the infusion end 10 are Luer inner cone connectors, which can ensure that the guide wire can be more convenient to operate;

[0030] When in use, the guide wire 3 extends into the inner tube 5 and extends out from the end of the inner tube 5. The space between the inner tube 5 and the balloon 2 forms a pressurized channel. The pressurized liquid can directly enter the space between the balloon cavity and the inner tube 5, thereby completing the expansion of the balloon 2.

[0031] The angiography catheter 1 is provided with a plurality of angiography holes, so that even if the angiography catheter 1 is not well fixed at the ideal aortic angiography position, the contrast agent can be normally delivered, thereby facilitating PDA imaging. Moreover, some side holes are located on the pulmonary artery side of the arterial catheter 1, and the contrast agent flowing out of the pulmonary artery holes is not easy to interfere with PDA imaging, so the angiography catheter 1 is conducive to PDA imaging.

[0032] The utility model has the following advantages: it has a more applicable reshapeable shaping section, which provides doctors with more curvature options. Doctors can adjust the curvature to a certain extent according to the characteristics of the patient's coronary sinus, making it easier for the product to enter the coronary sinus orifice. The equidistant development marks also have a certain measurement function, which is convenient for doctors to judge the depth of insertion of the catheter 1 into the coronary vein.

[0033] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A balloon angiography catheter, comprising a catheter (1) and a balloon (2) disposed at the distal end of the catheter (1), characterized in that: in, The balloon (2) is a compliant balloon (2), and the distal tube body of the catheter (1) is configured as a shapeable shaping section (4); The catheter (1) comprises an outer tube and an inner tube (5), the outer tube and the inner tube (5) are coaxially arranged, a through cavity (7) is arranged between the outer tube and the inner tube (5), the distal end of the through cavity (7) is a closed surface, a balloon (2) is arranged on the outer tube and the cavity of the balloon (2) is connected to the through cavity (7), when gas is introduced into the through cavity (7), the balloon (2) expands the through cavity (7) for injecting liquid or passing a guide wire; The catheter (1) is provided with a contrast cavity inside, and a plurality of second contrast holes (12) are provided at the top of the contrast delivery cavity; The catheter (1) is provided with two branches, namely a balloon filling end (9) and an infusion end (10), and both the balloon filling end (9) and the infusion end (10) have through holes.

2. A balloon angiography catheter according to claim 1, characterized in that: The hardness of the proximal tube body of the catheter (1) is greater than the hardness of the rest of the tube body of the catheter (1), so that the operator can adjust the direction of the shaping section (4) by twisting the proximal tube body of the catheter (1). Specifically, the hardness of the tube body of the catheter (1) gradually decreases from the proximal end of the catheter (1) toward the distal end of the catheter (1).

3. A balloon angiography catheter according to claim 2, characterized in that: The hardness of the proximal tube body of the catheter (1) is selected to be a material of about 70D.

4. A balloon angiography catheter according to claim 3, characterized in that: The distal end of the catheter (1) is provided as a shaping section (4), which allows the operator to adjust the curvature of the shaping section (4) according to the position and shape of the patient's coronary sinus ostium, thereby improving the adaptability of the catheter (1) and enabling it to smoothly pass through the patient's coronary sinus ostium. The shaping section (4) is provided with imaging marks (6) arranged at intervals along the axial direction of the shaping section (4).

5. A balloon angiography catheter according to claim 4, characterized in that: The imaging marks (6) can be spread all over the shaping section (4), and the imaging marks (6) are arranged at equal intervals, and the distance between two adjacent imaging marks (6) can be set according to clinical needs.

6. A balloon angiography catheter according to claim 1, characterized in that: The catheter (1) is connected to a connector (8), and a plurality of first angiography holes (11) are arranged at the top end of the catheter (1), and the plurality of first angiography holes (11) are evenly distributed in a circular shape.

7. A balloon angiography catheter according to claim 4, characterized in that: The developing mark (6) is arranged on the tube body of the inner tube (5), and the developing mark (6) can also be embedded in the tube body of the outer tube. The shaping section (4) is made of high molecular polymer material.

8. A balloon angiography catheter according to claim 1, characterized in that: The filling end (9) and the infusion end (10) are Luer inner cone connectors.

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