A disposable visual flexible microwave ablation needle

Abstract

This utility model relates to the field of ablation needle technology, specifically to a disposable, visual, flexible microwave ablation needle, comprising: an endoscope body; a flexible tube connected to the endoscope body, the flexible tube having multiple first through holes and one second through hole; and an ablation catheter connected to the endoscope body and angled relative to the endoscope body, the ablation catheter being fitted with a slidable ablation component, the ablation component extending to the outside of the endoscope body through the second through hole for ablation. In this utility model, the ablation needle is located within the flexible tube and the endoscope body, making full use of the space inside the flexible tube, achieving a compact and reasonable distribution within a limited space. Furthermore, the design of the first and second through holes satisfies both the need to determine the location of the lesion tissue and ensures the smooth extension of the ablation needle for ablation, eliminating the need for repeated confirmation of the lesion location.

Description

Technical Field

[0001] This utility model relates to the field of ablation needle technology, and in particular to a disposable, visual, flexible microwave ablation needle. Background Technology

[0002] In the current medical field, microwave ablation, as a minimally invasive and highly effective treatment for tumors, has been widely used. Microwave ablation uses microwave energy to generate high temperatures in tumor tissue, thereby achieving coagulative necrosis of tumor cells and achieving the therapeutic goal. However, a significant problem exists in existing microwave ablation procedures: the lack of visibility into the ablation process.

[0003] Traditional microwave ablation needles, once inserted into tumor tissue, ablate the tumor within the tissue itself, making it impossible for doctors to directly observe the specific location and extent of the ablation. To ensure accuracy and effectiveness, doctors typically require multiple CT scans to determine the needle's position and whether the ablation area covers the entire lesion. This process not only increases the procedure's time and complexity but also raises the patient's risk of radiation exposure.

[0004] Furthermore, because tissue temperature changes during microwave ablation are dynamic and influenced by various factors, such as tissue thermal conductivity and blood flow velocity, it is difficult to accurately monitor the ablation progress in real time using only CT scans. This can lead to incomplete or excessive ablation, affecting the treatment outcome.

[0005] Therefore, this application develops a disposable, visual, flexible microwave ablation needle to solve the problems existing in the prior art. Utility Model Content

[0006] The purpose of this invention is to provide a disposable, visual, flexible microwave ablation needle to solve the problem that existing technologies cannot visualize microwave ablation processes.

[0007] The technical solution of this utility model is: a disposable, visual, flexible microwave ablation needle, comprising:

[0008] Endoscope body;

[0009] A flexible tube is connected to the endoscope body, and the flexible tube has multiple first through holes and one second through hole;

[0010] An ablation catheter is connected to the endoscope body and is set at an angle relative to the endoscope body. A slidable ablation component is fitted on the ablation catheter. The ablation component extends to the outside of the endoscope body through the second through hole to perform ablation.

[0011] Preferably, the ablation assembly includes a guide rail, an ablation needle, and a slider. The guide rail is sleeved on the outer wall of the ablation catheter, the slider is slidably disposed on the guide rail, the ablation needle is located inside the ablation catheter, and the tail end of the ablation needle is connected to the slider, with the tip disposed along the direction of the second through hole. The ablation needle moves within the second through hole as the slider slides, so that the ablation needle extends from the second through hole out of the ablation catheter to the outside of the endoscope body.

[0012] Preferably, the guide rail includes two arc-shaped plates symmetrical along the guide rail axis, and there is a distance between the two arc-shaped plates to form a sliding space for the slider.

[0013] Preferably, the slider is provided with a knob, and the sliding position of the slider is controlled by rotating the knob.

[0014] Preferably, when the slider is located at the end of the guide rail away from the endoscope body, the tip of the ablation needle is located inside the tubing.

[0015] Preferably, there are three first through holes, which are symmetrically arranged around the second through hole, and the line connecting the center of the first through hole and the center of the second through hole coincides with the radial direction of the hose.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] (1) The ablation needle is located inside the tubing and endoscope body, making full use of the space inside the tubing and achieving a compact and reasonable distribution in a limited space. Through the design of the first and second through holes, it not only satisfies the determination of the location of the lesion tissue, but also ensures the smooth extension of the ablation needle and the ablation operation, without having to repeatedly confirm the location of the lesion.

[0018] (2) By sliding the slider on the guide rail, the position and angle of the ablation needle can be precisely controlled, and the lesion tissue can be accurately ablated. The knob design allows doctors to easily fix or adjust the position of the ablation needle, improving the accuracy of ablation treatment.

[0019] (3) When the slider is located at the end of the guide rail away from the endoscope body, the tip of the ablation needle is stored inside the tubing, which effectively protects the tip of the ablation needle from collision or damage from external objects, reduces interference with the surgical field of vision, and allows doctors to observe the surgical area more clearly. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a schematic diagram of the structure of a disposable, visual, flexible microwave ablation needle according to the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the ablation component described in this utility model;

[0023] Figure 3 This is a cross-sectional view of the hose described in this utility model.

[0024] The components include: 1. Endoscope body; 2. Tube; 21. First through hole; 22. Second through hole; 3. Ablation catheter; 4. Ablation assembly; 41. Guide rail; 411. Arc plate; 42. Ablation needle; 43. Slider; 44. Knob. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to specific embodiments:

[0026] like Figures 1-3 As shown, a disposable, flexible, visualized microwave ablation needle includes an endoscope body 1, a flexible tube 2, and an ablation catheter 3. One end of the flexible tube 2 is tightly connected to the endoscope body 1, serving as a flexible connection channel between the ablation needle 42 and the endoscope. The flexible tube 2 has multiple first through holes 21 and one second through hole 22. The first through holes 21 are used for auxiliary observation or the introduction of other auxiliary equipment (such as irrigation fluid, gas, etc.), while the second through hole 22 is specifically designed for the passage of the ablation component 4, ensuring that the ablation component 4 can smoothly extend to the outside of the endoscope body 1 for ablation. The ablation procedure is performed by connecting the ablation catheter 3 to the endoscope body 1 and setting it at a certain angle relative to the endoscope body 1 to facilitate the operation by the doctor during the procedure. A sliding ablation component 4 is fitted onto the ablation catheter 3. This component extends to the outside of the endoscope body 1 through the second through hole 22. During the procedure, the doctor can easily adjust the position and angle of the ablation component 4 as needed. The location of the lesion tissue can be determined through the first through hole 21 and the second through hole 22, and the lesion tissue can be ablated without repeatedly confirming the location of the lesion.

[0027] In this embodiment, as Figure 3 As shown, there are three first through holes 21, which are symmetrically arranged around the second through hole 22. The center line connecting the first through hole 21 and the second through hole 22 coincides with the radial direction of the hose 2, making full use of the space around the hose 2. This allows the ablation needle 42 to be compactly and reasonably distributed in a limited space, avoiding the problem of the ablation needle 42 being unable to be installed or being too crowded after installation due to insufficient space. This improves the space utilization rate and allows the ablation needle 42 to be installed inside the hose 2 without increasing the diameter of the hose 2.

[0028] To further explain, when the ablation catheter 3 is integrated into the rear section of the endoscope body 1, the limited space in the flexible tube 2 prevents the distribution of the signal and energy lines of the ablation needle 42 within the endoscope body 1. Forcibly placing these lines within the endoscope body 1 would easily lead to mutual interference between the signal and energy lines. This interference directly affects the working accuracy of the ablation needle 42, preventing it from achieving the required precision and consequently impacting the effectiveness and accuracy of the entire medical procedure.

[0029] Specifically, such as Figures 1-2 As shown, the ablation assembly 4 consists of a guide rail 41, an ablation needle 42, and a slider 43. The guide rail 41 is fitted onto the outer wall of the ablation catheter 3, providing a stable and slidable track foundation for the slider 43. The slider 43 is slidably mounted on the guide rail 41 and can move freely along the length of the guide rail 41. The ablation needle 42 is placed in the internal space of the ablation catheter 3, and its tail end is firmly connected to the slider 43, so that the movement of the slider 43 can be accurately transmitted to the ablation needle 42. The tip of the ablation needle 42 faces the direction of the second through hole 22. When the slider 43 slides along the guide rail 41, it will drive the ablation needle 42 to move synchronously. Under the traction of the slider 43, the ablation needle 42 will adjust its position in the second through hole 22 and finally extend smoothly out of the ablation catheter 3 from the second through hole 22 until it reaches the external space of the endoscope body 1 and reaches a specific position outside the endoscope body 1 to achieve precise ablation of the lesion tissue.

[0030] Furthermore, the guide rail 41 in the ablation component 4 is composed of two arc-shaped plates 411. The two arc-shaped plates 411 are symmetrically distributed along the axial direction of the guide rail 41 and maintain a certain distance from each other, thus forming a space for the slider 43 to slide. This allows the slider 43 to slide freely along the axial direction of the guide rail 41. A knob 44 is provided on the slider 43. The doctor can fix the ablation needle 42 in a certain position by rotating this knob 44 or loosen the knob 44 to allow the slider 43 to slide, thereby precisely controlling the sliding position of the slider 43 and thus accurately controlling the position of the ablation needle 42. This can greatly improve the accuracy of ablation treatment and reduce damage to surrounding normal tissues.

[0031] When the slider 43 is located at the end of the guide rail 41 away from the endoscope body 1, the tip of the ablation needle 42 is stored inside the tubing 2, effectively protecting the tip of the ablation needle 42 from collision or damage by external objects when it is not in use. During the surgical preparation stage or when the ablation needle 42 is not needed temporarily, storing the tip of the ablation needle 42 inside the tubing 2 can reduce interference with the surgical field of vision, allowing the doctor to observe the surgical area more clearly. Since the tip of the ablation needle 42 can only extend out of the tubing 2 to perform ablation operations when needed, the doctor can more accurately control the position and depth of the ablation needle 42, ensuring that the ablation energy is accurately applied to the target tissue, and improving the accuracy and effect of the surgery.

[0032] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A disposable visualizing flexible microwave ablation needle, characterized in that, include: Endoscope body (1); A flexible tube (2) is connected to the endoscope body (1), and the flexible tube (2) has a plurality of first through holes (21) and a second through hole (22); The ablation catheter (3) is connected to the endoscope body (1) and is set at an angle relative to the endoscope body (1). A slidable ablation component (4) is sleeved on the ablation catheter (3). The ablation component (4) extends to the outside of the endoscope body (1) through the second through hole (22) to perform ablation.

2. The disposable visualizing flexible microwave ablation needle of claim 1, wherein: The ablation assembly (4) includes a guide rail (41), an ablation needle (42), and a slider (43). The guide rail (41) is sleeved on the outer wall of the ablation catheter (3). The slider (43) is slidably disposed on the guide rail (41). The ablation needle (42) is located inside the ablation catheter (3), and the tail end of the ablation needle (42) is connected to the slider (43). The tip is disposed along the direction of the second through hole (22). The ablation needle (42) moves in the second through hole (22) as the slider (43) slides, so that the ablation needle (42) extends from the second through hole (22) out of the ablation catheter (3) to the outside of the endoscope body (1).

3. The disposable visualizing flexible microwave ablation needle of claim 2, wherein: The guide rail (41) includes two arc-shaped plates (411) symmetrical along the axial direction of the guide rail (41), and there is a distance between the two arc-shaped plates (411) to form a sliding space for the slider (43).

4. The disposable visualizing flexible microwave ablation needle of claim 2, wherein: The slider (43) is provided with a knob (44), and the sliding position of the slider (43) is controlled by rotating the knob (44).

5. The disposable, visual, flexible microwave ablation needle according to claim 2, characterized in that: When the slider (43) is located at one end of the guide rail (41) away from the endoscope body (1), the tip of the ablation needle (42) is located inside the tubing (2).

6. The disposable visualizing flexible microwave ablation needle of claim 1, wherein: The first through hole (21) is provided in three parts, and the three first through holes (21) are symmetrically arranged around the second through hole (22), and the center line connecting the first through hole (21) and the second through hole (22) coincides with the radial direction of the hose (2).

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