Ablation catheter under bronchoscope

Abstract

The ablation catheter under the bronchoscope comprises a main catheter body, an operation handle is arranged at one end of the main catheter body, a treatment catheter body is arranged at the end, away from the operation handle, of the main catheter body, a plurality of limiting openings are formed in the outer side of the treatment catheter body at equal intervals, and folding belts are arranged at the limiting openings. A permanent magnet is arranged in the treatment catheter, an electromagnet is arranged in the treatment catheter, an electrode tip is arranged at the end, away from the main body catheter, of the treatment catheter, and a plurality of ablation electrodes are arranged on the outer side of the treatment catheter at equal intervals. According to the utility model, the large-area lesion position can be conveniently ablated, the ablation efficiency is improved, and the operation time is greatly shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a bronchoscopic ablation catheter. Background Art

[0002] Most catheter ablation procedures are minimally invasive surgeries that can treat arrhythmias that occur in daily life and also play an important role in the treatment of cancer. The procedure is performed under the monitoring of an X-ray angiography machine. The electrode catheter is inserted into the area that needs treatment by puncturing a blood vessel, and then a high-frequency current is released locally at that location to generate a very high temperature in a very small area. Through thermal efficiency, the moisture in the local tissue evaporates, and the tissue becomes dry and necrotic, achieving the purpose of treatment. In the prior art, ablation catheters are usually used for ablation treatment, and then a high-frequency current is released through the position of the ablation catheter with an electrode to treat the area that needs treatment. However, when ablating the lesion, the area that needs to be ablated may be larger or smaller. In order to facilitate treatment, the electrode head of the ablation catheter needs to be frequently replaced, which is very troublesome to use and the surgical efficiency is very slow. Utility Model Content

[0003] The utility model aims to provide a bronchoscopic ablation catheter, which can facilitate ablation of a lesion of a larger area, improve the efficiency of ablation, and greatly reduce the operation time.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A bronchoscopic ablation catheter comprises a main catheter, one end of which is provided with an operating handle, and an end of the main catheter away from the operating handle is provided with a treatment catheter, a plurality of equally spaced limit openings are provided on the outside of the treatment catheter, and a folding belt is provided at each limit opening, a permanent magnet is provided at one end of the treatment catheter near each limit opening, and an electromagnet matched with the permanent magnet is provided at the other end of the treatment catheter near each limit opening, and the electromagnet generates a repulsive force with the permanent magnet when energized, an electrode head is provided at one end of the treatment catheter away from the main catheter, and a plurality of ablation electrodes cross-arranged with the limit openings are provided at equal intervals on the outside of the treatment catheter.

[0006] By adopting the above technical solution, the treatment catheter is inserted into the human body, and then the treatment catheter is pushed to the position of the lesion through the main catheter, and the lesion position is treated by the control electrode head of the operating handle. When a large area needs ablation treatment, the electromagnet is energized by the operating handle. When the electromagnet is energized, the electromagnet generates a force that repels the permanent magnet, drives the limit opening to open, and the folding belt unfolds. Then the position of the treatment catheter becomes spiral, increasing the contact area with the lesion position, and then the ablation electrode on the treatment catheter is used to ablate the lesion position, which facilitates treatment, speeds up the ablation of the lesion position, and can greatly reduce the operation time. After the ablation is completed, the electromagnet is stopped from being energized, and the permanent magnet and the electromagnet are attracted to each other, which drives the feed catheter to return to its original state.

[0007] The utility model is further configured as follows: a temperature sensor and a magnetic navigation sensor are arranged on the outer side of the electrode head at one end away from the treatment catheter.

[0008] The utility model is further configured as follows: a plurality of water spray holes arranged at equal intervals are provided on the outer side of the electrode head; a water spray pipe passing through the interior of the treatment catheter and connected to the electrode head is provided inside the main catheter; a free end of the water spray pipe passes through the operating handle and is provided with a Luer connector.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] It can facilitate ablation treatment of lesions of different areas, improve ablation efficiency, and greatly reduce the time of surgery. By controlling the electromagnet to energize, the electromagnet and the permanent magnet generate a repulsive force, thereby driving the limit opening to expand. As the limit opening continues to open, the ablation catheter begins to bend from the electrode head to form a spiral shape, thereby facilitating ablation treatment of lesions of larger areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 It is a partial cross-sectional view of the utility model;

[0013] Figure 3 It is a therapeutic catheter showing the utility model;

[0014] Figure 4 The utility model is used to demonstrate the electrode head.

[0015] In the figure: 1. main catheter; 2. operating handle; 3. treatment catheter; 4. limit port; 5. folding belt; 6. permanent magnet; 7. electromagnet; 8. electrode head; 9. water spray hole; 10. water spray pipe; 11. Luer connector; 12. temperature sensor; 13. magnetic navigation sensor; 14. ablation electrode. DETAILED DESCRIPTION

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0017] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0018] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0019] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Example, see Figure 1-4 A bronchoscopic ablation catheter comprises a main catheter 1, an operating handle 2 is arranged at the rear end of the main catheter 1, a main material catheter is arranged at the rear end of the main catheter 1, a plurality of equally spaced limit openings 4 are opened on the outside of a treatment catheter 3, each limit opening is provided with a circle of folding belt 5, a permanent magnet 6 is arranged at the front end of each limit opening 4 inside the treatment catheter 3, an electromagnet 7 is arranged at the rear end of each limit opening 4 inside the treatment catheter 3, each electromagnet 7 generates a repulsive force with the corresponding permanent magnet 6 when energized, a plurality of ablation electrodes 14 are arranged at equal intervals on the outside of the treatment catheter 3 and are cross-arranged with the limit openings 4, when encountering a large area of ​​lesions, the treatment catheter 3 can become spiral, so as to facilitate ablation of large area of ​​lesions.

[0021] An electrode head 8 is arranged at the front end of the treatment catheter 3. A temperature sensor 12 and a magnetic navigation sensor 13 are arranged at the front end of the electrode head 8, which are convenient for detecting the temperature and confirming the position of the electrode head 8 entering the human body. A plurality of water spray holes 9 arranged at equal intervals are opened on the outside of the electrode head 8. A water spray pipe 10 is arranged inside the catheter and passes through the treatment catheter 3 and is connected to the electrode head 8. A Luer connector 11 is arranged at the rear end of the water spray pipe 10 and passes through the operating handle 2.

[0022] Usage: insert the treatment catheter 3 into the human body, and then push the treatment catheter 3 to the position of the lesion through the main catheter 1, and treat the lesion position by controlling the electrode head 8 through the operating handle 2. The magnetic navigation sensor 13 can easily determine the position of the electrode head 8. When encountering a large area that needs ablation treatment, the electromagnet 7 is energized by the operating handle. When the electromagnet 7 is energized, the electromagnet 7 generates a repulsive force with the permanent magnet 6, driving the limit port 4 to open, and the folding belt 5 is unfolded. Then the position of the treatment catheter 3 will become spiral, increasing the contact area with the lesion position, and then through The ablation electrode 14 on the treatment catheter 3 performs ablation treatment on the location of the lesion, which facilitates the treatment and speeds up the ablation of the lesion location, and can greatly reduce the operation time. After the ablation is completed, the electromagnet 7 is powered off, the permanent magnet 6 and the electromagnet are attracted to each other, and the treatment catheter 3 is driven to return to its original state. The temperature sensor 12 can detect the temperature of the ablation location. When the temperature of the lesion location is too high due to ablation, the Luer connector 11 is connected to a container filled with saline, and the saline is injected into the water spray pipe 10, and then flows out through the water spray port on the electrode head 8 to cool down and prevent damage to the human body.

[0023] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A bronchoscopic ablation catheter, comprising a main catheter (1), characterized in that: An operating handle (2) is provided at one end of the main catheter (1), and a treatment catheter (3) is provided at the end of the main catheter (1) away from the operating handle (2). A plurality of equally spaced limiting openings (4) are provided on the outer side of the treatment catheter (3), and a folding belt (5) is provided at each limiting opening (4). A permanent magnet (6) is provided at one end of the treatment catheter (3) near each limiting opening (4), and an electromagnet (7) matched with the permanent magnet (6) is provided at the other end of the treatment catheter (3) near each limiting opening (4). When the electromagnet (7) is energized, a repulsive force is generated with the permanent magnet (6). An electrode head (8) is provided at the end of the treatment catheter (3) away from the main catheter (1), and a plurality of ablation electrodes (14) are provided at equal intervals on the outer side of the treatment catheter (3) and are arranged crosswise with the limiting openings (4).

2. The bronchoscopic ablation catheter according to claim 1, characterized in that: A temperature sensor (12) and a magnetic navigation sensor (13) are provided on the outer side of the electrode head (8) at one end away from the treatment catheter (3).

3. The bronchoscopic ablation catheter according to claim 1, characterized in that: The outer side of the electrode head (8) is provided with a plurality of water spray holes (9) arranged at equal intervals, and the interior of the main catheter (1) is provided with a water spray pipe (10) which passes through the interior of the treatment catheter (3) and is connected to the electrode head (8), and the free end of the water spray pipe (10) passes through the operating handle (2) and is provided with a Luer connector (11).

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