Balloon catheter suite for interventional radiography

Abstract

The invention discloses a balloon catheter suite for interventional radiography, and relates to the technical field of balloon catheters.The balloon catheter suite comprises a main body, a catheter is arranged at one end of the main body, a backflow pipe is arranged in the catheter, a first branch and a second branch are arranged at one end of the backflow pipe, and a balloon mechanism is installed at one end of the catheter; the balloon mechanism comprises a balloon which is an elastic film, and a sealing cover and a control mechanism are arranged on one side of the body. According to the balloon catheter kit for interventional radiography, liquid is utilized to extrude the liquid drainage ball through the micro hole, the rightward sliding speed of the liquid drainage ball is higher than that of the piston, the liquid enters the position between the piston and the base, air is discharged from the liquid drainage hole, the piston slides to the same position as the liquid drainage ball, and the size of the balloon is kept unchanged; the base is pushed leftwards to block the liquid drainage holes, so that the size of the balloon is stabilized, and the effect of accurately controlling the expansion size of the balloon is achieved.

Description

Technical Field

[0001] This invention relates to the field of balloon catheter technology, and more particularly to a balloon catheter kit for interventional radiology. Background Technology

[0002] Since its first application in interventional vascular treatment in the 1980s, balloon catheter technology has undergone significant development and innovation. Initially, balloon catheters were mainly used to dilate narrowed blood vessels, with simple technology and limited effectiveness. With the advancement of medical imaging and materials science, modern balloon catheters use more advanced polymer materials, possessing better pressure resistance and biocompatibility. The development of minimally invasive techniques has made balloon catheter insertion more convenient, greatly shortening patient recovery time. The application range of balloon catheters has also gradually expanded, and it is now used to treat a variety of diseases such as heart disease, aneurysm, and urinary tract obstruction.

[0003] Current balloon catheter technology still has some shortcomings in practical use. Particularly during the injection of fluid into the balloon using a syringe, doctors often cannot precisely control the balloon's expansion. This uncertainty can lead to excessively rapid or excessive inflation, potentially causing harm to the patient. Specifically, rapid inflation may damage the blood vessel wall, leading to internal bleeding or rupture, while excessive inflation may cause compression and damage to surrounding tissues, resulting in pain or functional impairment. Uneven inflation can also affect treatment effectiveness, increase the risk of restenosis, and fail to meet actual needs. Summary of the Invention

[0004] This invention discloses a balloon catheter kit for interventional radiology, which aims to solve the technical problem that doctors often cannot accurately control the inflation size of the balloon during the injection of liquid into the balloon using a syringe, thus causing potential damage to the patient's body.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A balloon catheter kit for interventional radiology includes a main body, one end of which is provided with a catheter, and the inside of the catheter is provided with a reflux tube, one end of which is provided with a first branch and a second branch respectively; One end of the catheter is equipped with a balloon mechanism, which includes a balloon, which is an elastic membrane. A sealing cap and a control mechanism are respectively provided on one side of the main body. The control mechanism is used to control the inflation of the balloon in the balloon mechanism. A connecting mechanism is installed at the other end of the main body, and a syringe is provided at the other end of the connecting mechanism. The syringe is filled with liquid, and the connecting mechanism is used to control the liquid to enter the main body.

[0006] The balloon mechanism also includes an installation cylinder at one end, one end of which is fixedly connected to the balloon, and the other end of the balloon is provided with a closed head. A support tube is provided inside the balloon.

[0007] The support tube has multiple liquid inlet holes at one end and multiple liquid outlet holes at the other end. The other end of the return tube is connected to the support tube.

[0008] The control mechanism includes a plastic screw threaded to one end of the mounting housing. One end of the plastic screw is rotatably connected to a knob, and the other end of the plastic screw is rotatably connected to a base. The base is slidably connected to the inner wall of the mounting housing. A spring is provided on one side of the base. A scale is provided on the outer wall of the mounting housing to record the position of the plastic screw extending into the mounting housing.

[0009] The bottom of the mounting shell is provided with multiple drainage holes. A piston is slidably connected inside the mounting shell. A pressure-bearing groove is provided on one side of the piston, and a sliding groove is provided on the other side of the piston. A drainage ball is provided inside the sliding groove. The drainage ball is fixedly connected to one end of a spring. The drainage ball slides inside the sliding groove, and the spring supports the drainage ball.

[0010] The pressure-bearing groove has micro-holes inside, and two sealing grooves are provided on the outer wall of the piston. The side wall of the pressure-bearing groove is inclined at 45 degrees. The inclination of the side wall of the pressure-bearing groove is conducive to the outward expansion of the piston edge, so as to contact the inner wall of the mounting shell. The diameter of the micro-hole is one-tenth of a millimeter.

[0011] When the sidewall of the pressure-bearing groove is subjected to pressure, the side of the piston facing the pressure-bearing groove will deform and squeeze the inner wall of the mounting shell, increasing the friction between the piston and the inner wall of the mounting shell.

[0012] In a preferred embodiment, the connecting mechanism includes a valve located at the other end of the main body, one end of which is provided with an external thread.

[0013] The other end of the main body has an internal thread, and a ball valve is rotatably connected inside the valve. The ball valve has a flow guide channel inside. When the flow guide channel is parallel to the valve, the ball valve is in the open state. When the flow guide channel is perpendicular to the valve, the ball valve is in the closed state.

[0014] As can be seen from the above, the balloon catheter kit for interventional radiology provided by the present invention has the following technical effects.

[0015] Firstly, the piston deforms under pressure through the pressure-bearing groove on one side, increasing the friction between the piston and the inner wall of the mounting housing. Therefore, under the pressure of the liquid, the piston slides slowly to the right, while the liquid squeezes the drainage ball through the micro-holes. The drainage ball slides to the right faster than the piston, so the liquid enters between the piston and the base, and the air is discharged from the drainage hole. The piston slides to the same position as the drainage ball, and the size of the balloon remains unchanged. By pushing the base to the left to block multiple drainage holes, the size of the balloon is stabilized, thus achieving the effect of precisely controlling the inflation size of the balloon.

[0016] Secondly, if the size of the balloon needs to be changed, the base and piston can be pushed to the left by turning the knob and plastic screw. The size of the balloon can be slightly changed according to the relative position of the base and piston, which achieves the effect of fine-tuning the size of the balloon.

[0017] Thirdly: If it is necessary to slowly drain the liquid, by turning the knob and the plastic screw, the base is pushed to the right, exposing multiple drainage holes. As a result, the spring loses its support, and the liquid is slowly drained through the micro-holes and drainage holes, gradually reducing the volume of the balloon until the piston slowly slides to the right, and the liquid is directly discharged from the drainage holes, so that the liquid is completely discharged from the balloon, achieving the effect of slowly draining the liquid inside the balloon. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the isometric structure proposed in this invention.

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure proposed in this invention.

[0020] Figure 3 This is a schematic diagram of a partial structure proposed in this invention.

[0021] Figure 4 This is a schematic diagram of the balloon inflation structure proposed in this invention.

[0022] Figure 5 This is a side view schematic diagram of the structure proposed in this invention.

[0023] Figure 6 This is a schematic diagram of the mounting shell structure proposed in this invention.

[0024] Figure 7 This is a schematic diagram of the base structure proposed in this invention.

[0025] Figure 8 This is a schematic diagram of the piston structure proposed in this invention.

[0026] In the diagram: 1. Main body; 2. Guide tube; 3. Balloon; 4. Knob; 5. Sealing cap; 6. Syringe; 7. Valve; 8. Ball valve; 9. Return tube; 10. Internal thread; 11. Switch; 12. Inlet port; 13. Support tube; 14. Sealing head; 15. Outlet port; 16. Mounting cylinder; 17. First branch; 18. Mounting shell; 19. Second branch; 20. Plastic screw; 21. Drain port; 22. Spring; 23. Drain ball; 24. Scale; 25. Piston; 26. Base; 27. Sealing groove; 28. Micro-hole; 29. ​​Pressure groove; 30. Sliding groove. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Reference Figure 1 — Figure 8 A balloon catheter kit for interventional radiology includes a main body 1, a catheter 2 is provided at one end of the main body 1, a reflux tube 9 is provided inside the catheter 2, and a first branch 17 and a second branch 19 are respectively provided at one end of the reflux tube 9. One end of the catheter 2 is equipped with a balloon mechanism, which includes a balloon 3, which is an elastic membrane; A sealing cap 5 and a control mechanism are respectively provided on one side of the main body 1. The control mechanism is used to control the inflation of the balloon 3 in the balloon mechanism. A connecting mechanism is installed at the other end of the main body 1, and a syringe 6 is provided at the other end of the connecting mechanism. Liquid is provided inside the syringe 6, and the connecting mechanism is used to control the liquid to enter the main body 1.

[0029] The balloon mechanism also includes an installation cylinder 16 at one end, one end of which is fixedly connected to the balloon 3, and the other end of the balloon 3 is provided with a sealing head 14, and the inside of the balloon 3 is provided with a support tube 13.

[0030] One end of the support tube 13 is provided with multiple liquid inlet holes 12, and the other end of the support tube 13 is provided with multiple liquid outlet holes 15. The other end of the return tube 9 is connected to the support tube 13.

[0031] The control mechanism includes a plastic screw 20 threaded to one end of the mounting housing 18, a knob 4 rotatably connected to one end of the plastic screw 20, and a base 26 rotatably connected to the other end of the plastic screw 20. The base 26 is slidably connected to the inner wall of the mounting housing 18. A spring 22 is provided on one side of the base 26, and a scale 24 is provided on the outer wall of the mounting housing 18.

[0032] The bottom of the mounting shell 18 is provided with multiple drainage holes 21. A piston 25 is slidably connected inside the mounting shell 18. A pressure-bearing groove 29 is provided on one side of the piston 25, and a sliding groove 30 is provided on the other side of the piston 25. A drainage ball 23 is provided inside the sliding groove 30, and the drainage ball 23 is fixedly connected to one end of the spring 22.

[0033] The pressure-bearing groove 29 has micro-holes 28 inside, and the piston 25 has two sealing grooves 27 on its outer wall. The side wall of the pressure-bearing groove 29 is inclined at 45 degrees.

[0034] When the side wall of the pressure groove 29 is subjected to pressure, the side of the piston 25 facing the pressure groove 29 will deform and squeeze the inner wall of the mounting shell 18, increasing the friction between the piston 25 and the inner wall of the mounting shell 18.

[0035] In this embodiment, by rotating the knob 4 and the plastic screw 20, the base 26 is pushed to the left. After the balloon 3 expands, the sealing cap 5 is removed. The liquid inside the balloon 3 flows out through the liquid outlet 15, the support tube 13, the return tube 9, and the second branch 19, indicating that the device is working normally without leakage.

[0036] Furthermore, based on the actual size of the angiography site, liquid is injected into the balloon 3 through the syringe 6 to inflate the balloon 3 to a size similar to the actual size of the angiography site. The rotary switch 11 closes the flow channel for the liquid entering the balloon 3. At this time, the liquid enters the interior of the mounting shell 18 through the return tube 9 and the first branch 17.

[0037] Specifically, the pressure-bearing groove 29 on one side of the piston 25 deforms under pressure, increasing the friction between the piston 25 and the inner wall of the mounting shell 18. Therefore, under the pressure of the liquid, the piston 25 slides slowly to the right. The liquid squeezes the drain ball 23 through the micro-hole 28. The drain ball 23 slides to the right faster than the piston 25, so the liquid enters between the piston 25 and the base 26, and the air is discharged from the drain hole 21. Until the piston 25 is no longer compressed, the piston 25 slides to the same position as the drain ball 23, and the liquid can no longer flow out. At this time, the size of the balloon 3 remains unchanged. Since the diameter of the micro-hole 28 is one-tenth of a millimeter, very little liquid flows out through the micro-hole 28 during this period. The position of the base 26 is remembered by the scale 24. By rotating the knob 4 and the plastic screw 20, the base 26 is pushed to the left to block multiple drain holes 21, sealing the inside of the mounting shell 18, thereby stabilizing the size of the balloon 3 and achieving the effect of precisely controlling the expansion size of the balloon 3.

[0038] Furthermore, if it is necessary to change the size of the balloon 3, by turning the knob 4 and the plastic screw 20, the base 26 and the piston 25 are pushed to the left. According to the relative position of the base 26 and the scale 24, the size of the balloon 3 is slightly changed, which achieves the effect of fine-tuning the size of the balloon 3.

[0039] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 In a preferred embodiment, the connecting mechanism includes a valve 7 disposed at the other end of the main body 1. One end of the valve 7 is provided with an external thread, and the inner wall of the other end of the main body 1 is provided with an internal thread 10. A ball valve 8 is rotatably connected inside the valve 7. A flow guide channel is provided inside the ball valve 8. A switch 11 is fixedly connected to the top of the ball valve 8. A syringe 6 is inserted into the other end of the valve 7.

[0040] In this embodiment, if it is necessary to slowly drain the liquid, the base 26 is pushed to the right by rotating the knob 4 and the plastic screw 20, exposing multiple drainage holes 21. As a result, the spring 22 loses its support, and the liquid is slowly drained through the micro-hole 28 and the drainage holes 21, gradually reducing the volume of the balloon 3 until the piston 25 slowly slides to the right, and the liquid is directly discharged from the drainage holes 21, so that the liquid is completely discharged from the balloon 3, achieving the effect of slowly draining the liquid inside the balloon 3.

[0041] Working principle: During use, the doctor makes an incision in the patient through minimally invasive surgery. One end of the balloon mechanism with the closed head 14 is inserted into the incision. Utilizing the length of the catheter 2, it extends to the location requiring imaging. The main body 1 is connected to the valve 7, and the syringe 6 is connected to the valve 7. Liquid inside the syringe 6 is forced into the main body 1. The liquid then enters the balloon 3 through the catheter 2 and the inlet port 12. As the liquid enters the balloon 3, the internal pressure increases, causing the balloon 3 to inflate. The inflated balloon 3 supports the location requiring imaging within the patient's body. The size of the imaging location is determined by the actual CT scan. The size is adjusted by rotating the knob 4 and the plastic screw according to the actual size of the imaging location. 20, thus pushing the base 26 to the left, and removing the sealing cap 5 after the balloon 3 inflates. The liquid inside the balloon 3 flows out through the outlet hole 15, support tube 13, return tube 9 and second branch 19, indicating that the device is working normally without leakage. According to the actual size of the angiography position, inject liquid into the balloon 3 through the syringe 6 to inflate the balloon 3 to a size similar to the actual size of the angiography position. Rotate the switch 11 to close the liquid inlet channel of the balloon 3. At this time, the liquid enters the interior of the mounting shell 18 through the return tube 9 and the first branch 17. The pressure groove 29 on one side of the piston 25 is deformed by pressure, and the friction between the piston 25 and the inner wall of the mounting shell 18 increases. Therefore, under the push of the liquid pressure, the piston 25 slides slowly to the right, and the liquid passes through the micro The orifice 28 compresses the drainage ball 23, which in turn compresses the spring 22 to the right. The drainage ball 23 slides to the right faster than the piston 25, allowing liquid to enter between the piston 25 and the base 26. Air is expelled from the drainage hole 21. This continues until the piston 25 is no longer compressed and slides to the same position as the drainage ball 23, preventing further liquid flow. At this point, the size of the balloon 3 remains constant. Because the diameter of the micro-orifice 28 is only one-tenth of a millimeter, very little liquid flows out during this period. The position of the base 26 is recorded using the scale 24. By rotating the knob 4 and the plastic screw 20, the base 26 is pushed to the left, blocking multiple drainage holes 21 and sealing the interior of the mounting shell 18. This stabilizes the size of the balloon 3, achieving precise control of the balloon. 3. Regarding the effect of expanding the size: If it is necessary to change the size of balloon 3, by rotating knob 4 and plastic screw 20, the base 26 and piston 25 are pushed to the left, slightly changing the size of balloon 3, which achieves the effect of fine-tuning the size of balloon 3. After the operation is completed, it is necessary to drain the fluid inside balloon 3. If it is necessary to drain the fluid slowly, by rotating knob 4 and plastic screw 20, the base 26 is pushed to the right, exposing multiple drainage holes 21. As a result, spring 22 loses its support, and the fluid is slowly drained through micro-holes 28 and drainage holes 21, slowly reducing the volume of balloon 3 until piston 25 slowly slides to the right, and the fluid is directly drained from drainage holes 21, so that the fluid is completely drained from balloon 3, achieving the effect of slowly draining the fluid inside balloon 3.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A balloon catheter kit for interventional radiology, comprising a main body (1), characterized in that, One end of the main body (1) is provided with a conduit (2), and the inside of the conduit (2) is provided with a return pipe (9). One end of the return pipe (9) is provided with a first branch (17) and a second branch (19). One end of the catheter (2) is equipped with a balloon mechanism, which includes a balloon (3). The balloon (3) is an elastic membrane. The balloon mechanism also includes an installation cylinder (16) at one end. One end of the installation cylinder (16) is fixedly connected to the balloon (3). The other end of the balloon (3) is provided with a sealing head (14). The balloon (3) is provided with a support tube (13) inside. One end of the support tube (13) is provided with multiple inlet holes (12). The other end of the support tube (13) is provided with multiple outlet holes (15). The other end of the return tube (9) is connected to the support tube (13). A sealing cap (5) and a control mechanism are respectively provided on one side of the main body (1). The control mechanism is used to control the inflation of the balloon (3) in the balloon mechanism. The control mechanism includes a plastic screw (20) threaded to one end of the mounting shell (18). A knob (4) is rotatably connected to one end of the plastic screw (20). A base (26) is rotatably connected to the other end of the plastic screw (20). The base (26) is slidably connected to the inner wall of the mounting shell (18). A sealing cap (5) and a control mechanism are respectively provided on one side of the base (26). There is a spring (22), and a scale (24) is provided on the outer wall of the mounting shell (18). The bottom of the mounting shell (18) is provided with multiple drainage holes (21). A piston (25) is slidably connected inside the mounting shell (18). A pressure-bearing groove (29) is provided on one side of the piston (25), and a sliding groove (30) is provided on the other side of the piston (25). A drainage ball (23) is provided inside the sliding groove (30), and the drainage ball (23) is fixedly connected to one end of the spring (22). A connecting mechanism is installed at the other end of the main body (1), and a syringe (6) is provided at the other end of the connecting mechanism. Liquid is provided inside the syringe (6), and the connecting mechanism is used to control the liquid to enter the main body (1).

2. The balloon catheter kit for interventional radiology according to claim 1, characterized in that, The pressure-bearing groove (29) has micro-holes (28) inside, and two sealing grooves (27) are provided on the outer wall of the piston (25). The side wall of the pressure-bearing groove (29) is inclined at 45 degrees.

3. A balloon catheter kit for interventional radiology according to claim 2, characterized in that, When the side wall of the pressure groove (29) is subjected to pressure, the piston (25) will deform and squeeze the inner wall of the mounting shell (18) on the side facing the pressure groove (29), increasing the friction between the piston (25) and the inner wall of the mounting shell (18).

4. A balloon catheter kit for interventional radiology according to claim 3, characterized in that, The connecting mechanism includes a valve (7) located at the other end of the main body (1), and one end of the valve (7) is provided with an external thread.

5. A balloon catheter kit for interventional radiology according to claim 4, characterized in that, The inner wall of the other end of the main body (1) is provided with an internal thread (10), and the valve (7) is rotatably connected to a ball valve (8), and the ball valve (8) is provided with a flow guide channel inside.

6. A balloon catheter kit for interventional radiology according to claim 5, characterized in that, A switch (11) is fixedly connected to the top of the ball valve (8), and the syringe (6) is inserted into the other end of the valve (7).

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