Balloon puncture sheath
The expansion mechanism of the balloon puncture sheath is designed to effectively block the sclerogen, solving the problem of sclerogen entering the deep vein after radiofrequency ablation, simplifying the operation and improving the surgical efficiency.
Patent Information
- Application Number
- CN202422163995.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-04
AI Technical Summary
The prior art is difficult to effectively block blood vessels when the sclerotic agent is injected after radiofrequency ablation, which may cause the sclerotic agent to enter the deep vein and cause adverse effects. The traditional surgical methods are time-consuming and labor-intensive and have great damage.
A balloon puncture sheath is designed, including a sheath tube and an expansion mechanism, with multiple channels in the sheath tube and an inflatable balloon at the tail for vascular blockade, and the degree of expansion is controlled by inflation, providing an accurate channel for injection of a hardener.
Effective blockade of sclerants is achieved, the impact on the deep vein is reduced, the operation process is simplified, and the surgical efficiency and patient recovery effect are improved.
Smart Images
Figure CN223126617U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, and particularly relates to a balloon puncture sheath. Background Art
[0002] There are many surgical methods for great saphenous varicose veins. The traditional method is called high ligation of the great saphenous vein and stripping of the great saphenous vein. Since such surgeries are time-consuming, have a relatively large injury area, and a relatively large amount of bleeding, they are not recommended clinically and belong to relatively good classical treatment methods.
[0003] For great saphenous varicose veins, thermal ablation method and radiofrequency ablation are now popular. Radiofrequency ablation is a direction for minimally invasive treatment of varicose veins of the lower extremities. Its advantages are minimally invasive, patients can recover quickly after surgery, and patients suffer less pain during the whole treatment process, with a very good medical experience, and can also achieve good treatment effects. It closes the main trunk of the great saphenous vein above the knee through radiofrequency energy, and closes the main trunk and branches that cannot be closed below the knee with foam sclerosing agent. However, sometimes the ablated part of the main trunk may not be completely closed. When injecting the sclerosing agent, the sclerosing agent may enter the deep vein and have an adverse effect on the human body. In view of the above problems, the utility model provides a balloon puncture sheath with a simple structure, convenient use, and capable of playing a blocking role during sclerosing agent injection. Summary of the Utility Model
[0004] The technical problem to be solved by the utility model is to provide a balloon puncture sheath with a simple structure, convenient use, and capable of playing a blocking role during sclerosing agent injection.
[0005] To solve the above problems, the technical solution adopted by the utility model is:
[0006] A balloon puncture sheath includes a sheath tube. A first channel and a second channel are axially arranged in the sheath tube; a sheath tube seat is arranged at the head end of the sheath tube, and a first interface and a second interface are arranged on the sheath tube seat. The first interface is communicated with the first channel, and the second interface is communicated with the second channel; an expansion mechanism that expands outward and inward simultaneously after inflation is arranged at the tail end of the sheath tube, and the expansion mechanism is connected with the second channel; a plurality of through holes are formed on the side wall at the tail end of the sheath tube.
[0007] As an implementation manner of the utility model, the expansion mechanism includes a first balloon annularly arranged outside the tail end of the sheath tube and a second balloon annularly arranged inside the tail end of the sheath tube; a plurality of third channels are arranged between the outer wall of the tail end of the sheath tube and the second channel, and a plurality of fourth channels are arranged between the inner wall of the tail end of the sheath tube and the second channel. The first balloon is communicated with the second channel through the third channel, and the second balloon is communicated with the second channel through the fourth channel.
[0008] As an implementation manner of the present utility model, the expansion mechanism includes a third balloon disposed annularly at the end face of the distal end of the sheath tube. The outer edge of the third balloon is fixedly provided on the outer wall of the sheath tube, and the inner edge is fixedly provided on the inner wall of the sheath tube; the second channel penetrates to the distal end of the sheath tube and is directly communicated with the inside of the third balloon.
[0009] As an implementation manner of the present utility model, a sheath tube scale is provided on the side wall of the sheath tube from the distal end to the proximal end.
[0010] As an implementation manner of the present utility model, a hemostatic valve is provided on the sheath tube seat.
[0011] As an implementation manner of the present utility model, the second interface is connected to an inflation device through a connecting tube. The inflation device includes an inflation cylinder. An inflation cylinder scale is provided on the inflation cylinder from top to bottom, and / or a pressure gauge is provided at the lower end of the inflation cylinder.
[0012] As an implementation manner of the present utility model, the inflation cylinder is in a cylindrical shape. An inflation port connected to the connecting tube is provided at the lower end thereof. An adjusting ring is fixedly provided on the inner side of the upper part. Internal threads are provided on the inner wall of the adjusting ring; a rotating rod is provided inside the inflation cylinder. External threads adapted to the internal threads are provided on the outer wall of the rotating rod. A pressing block is slidably provided up and down below the adjusting ring inside the inflation cylinder. The lower end of the rotating rod is rotatably clamped inside the pressing block. A sealing plug adapted to the inner wall of the inflation cylinder is fixedly provided at the lower end of the pressing block.
[0013] As an implementation manner of the present utility model, an air pipe is communicated with the side wall at the lower end of the inflation cylinder, and the pressure gauge is provided on the air pipe.
[0014] As an implementation manner of the present utility model, a turning handle is fixedly provided at the upper end of the rotating rod.
[0015] As an implementation manner of the present utility model, the first channel is provided in the middle of the sheath tube, and the second channel is provided on one side of the first channel.
[0016] The beneficial effects of adopting the above technical solutions are as follows:
[0017] The balloon puncture sheath provided by the utility model has a simple structure and is convenient to use. By arranging a dilation mechanism at the tail end of the sheath tube, it can block blood vessels after inflation, which is beneficial to the injection of sclerosing agents after radiofrequency ablation. And when the dilation mechanism is in a contracted state, it does not affect the passage of the guide wire or dilation catheter. A sheath tube scale is arranged on the sheath tube, which is convenient to observe and compare the length of entering the blood vessel during insertion. An inflation cylinder scale is arranged on the inflation cylinder, or a pressure gauge is arranged at the lower end of the inflation cylinder. Inflation is carried out in advance, and the dilation degree of the dilation mechanism is recorded by observing the pressing distance of the sealing plug or observing the reading of the pressure gauge to form a comparison table. During actual use, the dilation mechanism is pressurized according to the comparison table, and the dilation degree of the dilation mechanism can be precisely controlled. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 FIG. is a schematic half-sectional structure view of the sheath tube in the utility model.
[0019] Figure 2 FIG. Figure 1 is a partially enlarged structural view of part A in FIG.
[0020] Figure 3 FIG. Figure 1 is another partially enlarged view of part A in FIG.
[0021] Figure 4 is a schematic structural view of the utility model.
[0022] Figure 5 is a schematic sectional structure view of the inflation cylinder in the utility model.
[0023] Wherein: 1 sheath tube, 2 first channel, 3 second channel, 4 through hole, 5 third channel, 6 fourth channel, 7 first balloon, 8 second balloon, 9 third balloon, 10 sheath tube scale, 11 sheath tube seat, 12 first interface, 13 second interface, 14 hemostatic valve, 15 inflation cylinder, 16 inflation port, 17 adjusting ring, 18 internal thread, 19 sealing plug, 20 pressing block, 21 rotating rod, 22 external thread, 23 rotating handle, 24 inflation cylinder scale, 25 ventilation pipe, 26 pressure gauge. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] To make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be clearly and completely described below in conjunction with specific embodiments.
[0025] Such as Figures 1 - 3A balloon puncture sheath as shown, which includes a sheath tube 1. A first channel 2 and a second channel 3 are axially arranged in the sheath tube 1; a sheath base 11 is provided at the head end of the sheath tube 1, a first interface 12 and a second interface 13 are provided on the sheath base 11, the first interface 12 is communicated with the first channel 2, and the second interface 13 is communicated with the second channel 3; an expansion mechanism that expands outward and inward simultaneously after inflation is provided at the tail end of the sheath tube 1. The expansion mechanism expands inward to complete the blocking of the internal space of the sheath tube 1, and expands outward to complete the blocking of the space between the sheath tube 1 and the blood vessel. The expansion mechanism is connected to the second channel 3; a plurality of through holes 4 are opened on the side wall at the tail end of the sheath tube 1. The first channel 2 is arranged in the middle of the sheath tube 1, and the second channel 3 is arranged on one side of the first channel 2. When performing sclerosing agent injection after radiofrequency ablation, first insert the sheath tube 1 through a guide wire, and then inflate the expansion mechanism to complete the temporary blocking of the ablated part and the unablated part of the great saphenous vein trunk. Inject the sclerosing agent into the first channel 2 through the first interface 12, and the sclerosing agent enters the blood vessel through the through hole 4.
[0026] The balloon puncture sheath provided by the present utility model has a simple structure and is convenient to use. By providing an expansion mechanism at the tail end of the sheath tube 1, it can block the blood vessel after inflation, which is beneficial to the injection of the sclerosing agent after radiofrequency ablation. And when the expansion mechanism is in a contracted state, it does not affect the passage of the guide wire or the dilation catheter.
[0027] As Figure 2 shown, as an implementation manner, the expansion mechanism includes a first balloon 7 arranged in a ring shape on the outer side of the tail end of the sheath tube 1 and a second balloon 8 arranged in a ring shape on the inner side of the tail end of the sheath tube 1; a plurality of third channels 5 are arranged between the outer wall of the tail end of the sheath tube 1 and the second channel 3, and a plurality of fourth channels 6 are arranged between the inner wall of the tail end of the sheath tube 1 and the second channel 3. The first balloon 7 is communicated with the second channel 3 through the third channel 5, and the second balloon 8 is communicated with the second channel 3 through the fourth channel 6.
[0028] As Figure 3 shown, as another implementation manner, the expansion mechanism includes a third balloon 9 arranged in a ring shape at the end face of the tail end of the sheath tube 1. The outer edge of the third balloon 9 is fixed on the outer wall of the sheath tube 1, and the inner edge is fixed on the inner wall of the sheath tube 1; the second channel 3 penetrates to the tail end of the sheath tube 1 and is directly communicated with the inside of the third balloon 9.
[0029] In this embodiment, a sheath scale 10 is arranged on the side wall of the sheath tube 1 from the tail end to the head end. The sheath tube 1 is provided with a sheath scale 10, which is convenient to observe and compare the length of entering the blood vessel during insertion. A hemostatic valve 14 is provided on the sheath base 11.
[0030] As Figure 4As shown, the second interface 13 is connected to an inflation device through a connecting pipe. The inflation device includes an inflation cylinder 15. An inflation cylinder scale 24 is arranged on the inflation cylinder 15 from top to bottom, and / or a pressure gauge 26 is arranged at the lower end of the inflation cylinder 15. By providing the inflation cylinder scale 24 and / or the pressure gauge 26, inflation is carried out beforehand. By observing the pressing distance of the sealing plug 19 or observing the reading of the pressure gauge 26, the degree of expansion of the expansion mechanism (i.e., the expansion diameter of the balloon) is recorded to form a comparison table. During actual use, the expansion mechanism is pressurized according to the comparison table, and the degree of expansion of the expansion mechanism (i.e., the expansion diameter of the balloon) can be precisely controlled. In addition, water or a contrast agent can be used to replace air in the inflation cylinder 15.
[0031] As Figure 5 shown, the inflation cylinder 15 is cylindrical. An inflation port 16 connected to the connecting pipe is arranged at its lower end. An adjusting ring 17 is fixedly arranged on the inner side of the upper part. An internal thread 18 is arranged on the inner wall of the adjusting ring 17. A rotating rod 21 is arranged in the inflation cylinder 15. An external thread 22 adapted to the internal thread 18 is arranged on the outer wall of the rotating rod 21. A pressing block 20 is arranged in the inflation cylinder 15 below the adjusting ring 17 and can slide up and down. The lower end of the rotating rod 21 is rotatably clamped in the pressing block 20. A sealing plug 19 adapted to the inner wall of the inflation cylinder 15 is fixedly arranged at the lower end of the pressing block 20. By rotating the rotating rod 21, the sealing plug 19 can be driven to move in the inflation cylinder 15, and the moving distance of the sealing plug 19 can be accurately controlled through thread cooperation.
[0032] A ventilation pipe 25 is communicated with the side wall at the lower end of the inflation cylinder 15. The pressure gauge 26 is arranged on the ventilation pipe 25. A turning handle 23 is fixedly arranged at the upper end of the rotating rod 21.
[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A balloon puncture sheath, characterized in that: It includes a sheath tube, and a first channel and a second channel are axially arranged in the sheath tube; a sheath tube seat is arranged at the head end of the sheath tube, a first interface and a second interface are arranged on the sheath tube seat, the first interface is communicated with the first channel, and the second interface is communicated with the second channel; an expansion mechanism that expands outward and inward simultaneously after inflation is arranged at the tail end of the sheath tube, and the expansion mechanism is connected with the second channel; a plurality of through holes are formed in the side wall of the tail end of the sheath tube.
2. The balloon puncture sheath according to claim 1, characterized in that: The expansion mechanism includes a first balloon arranged in a ring shape outside the tail end of the sheath tube and a second balloon arranged in a ring shape inside the tail end of the sheath tube; a plurality of third channels are arranged between the outer wall of the tail end of the sheath tube and the second channel, and a plurality of fourth channels are arranged between the inner wall of the tail end of the sheath tube and the second channel. The first balloon is communicated with the second channel through the third channel, and the second balloon is communicated with the second channel through the fourth channel.
3. The balloon puncture sheath according to claim 1, wherein: The expansion mechanism includes a third balloon arranged in a ring shape at the end face of the tail end of the sheath tube. The outer edge of the third balloon is fixedly arranged on the outer wall of the sheath tube, and the inner edge is fixedly arranged on the inner wall of the sheath tube; the second channel penetrates to the tail end of the sheath tube and is directly communicated with the inside of the third balloon.
4. A balloon puncture sheath according to claim 1, characterized in that: Sheath tube scales are arranged on the side wall of the sheath tube from the tail end to the head end.
5. A balloon puncture sheath according to claim 4, characterized in that: A hemostatic valve is arranged on the sheath tube seat.
6. A balloon puncture sheath according to any one of claims 1-5, characterized in that: The second interface is connected with an inflation device through a connecting pipe. The inflation device includes an inflation cylinder. Inflation cylinder scales are arranged on the inflation cylinder from top to bottom, and / or a pressure gauge is arranged at the lower end of the inflation cylinder.
7. A balloon puncture sheath according to claim 6, characterized in that: The inflation cylinder is in a cylindrical shape. An inflation port connected with the connecting pipe is arranged at the lower end of the inflation cylinder. An adjusting ring is fixedly arranged inside the upper part. Internal threads are arranged on the inner wall of the adjusting ring; a rotating rod is arranged inside the inflation cylinder. External threads adapted to the internal threads are arranged on the outer wall of the rotating rod. A pressing block that can slide up and down is arranged below the adjusting ring inside the inflation cylinder. The lower end of the rotating rod is rotatably clamped in the pressing block. A sealing plug adapted to the inner wall of the inflation cylinder is fixedly arranged at the lower end of the pressing block.
8. A balloon puncture sheath according to claim 7, characterized in that: An air vent pipe is communicated with the side wall at the lower end of the inflation cylinder, and the pressure gauge is arranged on the air vent pipe.
9. A balloon puncture sheath according to claim 8, characterized in that: A turning handle is fixedly arranged at the upper end of the rotating rod.
10. A balloon puncture sheath according to claim 1, characterized in that: The first channel is arranged in the middle of the sheath tube, and the second channel is arranged on one side of the first channel.