Ablation electrode needle and ablation electrode kit

Abstract

The utility model relates to the field of medical instruments, in particular to an ablation electrode needle and an ablation electrode kit. The ablation electrode needle comprises a needle head and a needle tube; the needle is connected with the needle tube; wherein the needle head is provided with an anchoring part, and the anchoring part is used for being clamped with human tissues. The ablation electrode needle is used for an electrode ablation system, the stability in the using process can be improved, displacement of the needle head caused by breathing or heartbeat of a patient is avoided, the ablation effect can be prevented from being affected by displacement of the needle head, the overall structure is simple, use is convenient, and the using cost can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, and in particular to an ablation electrode needle and an ablation electrode kit. Background Art

[0002] Steep pulse ablation is a new technology in the field of tumor ablation that uses a high-voltage steep pulse electric field to create permanent nano-scale perforations on the cell membrane, thereby causing cell apoptosis. In recent years, it has attracted more and more attention and has been used in clinical tumor treatment. When performing steep pulse ablation treatment, the electrode needle needs to be inserted into the lesion site of the human body. After the needle tip punctures the target tissue location, the electrode needle is very likely to shift due to the patient's breathing or heartbeat, thus affecting the ablation effect. Utility Model Content

[0003] The purpose of the utility model is to provide an ablation electrode needle and an ablation electrode kit, which can improve stability during use and avoid displacement of the needle due to the patient's breathing or heartbeat, thereby avoiding the ablation effect from being affected by the displacement of the needle. The overall structure is simple, easy to use, and can effectively reduce the cost of use.

[0004] The embodiment of the utility model is achieved as follows:

[0005] In a first aspect, the utility model provides an ablation electrode needle, the ablation electrode needle comprises a needle head and a needle tube; the needle head is connected to the needle tube;

[0006] The needle is provided with an anchoring portion, and the anchoring portion is used for engaging with human tissue.

[0007] In an optional embodiment, the distal end of the needle is configured with a puncture needle tip, and the puncture needle tip includes at least three beveled surfaces;

[0008] Wherein, along the axial direction of the needle, the anchoring portion and the puncture needle tip are spaced 1-2 mm apart.

[0009] In an optional embodiment, the anchoring portion includes an anchoring groove opened in the needle head.

[0010] In an alternative embodiment, the anchoring groove is arranged annularly around the axis of the needle.

[0011] In an optional embodiment, the anchoring groove includes a first section and a second section, and the first section and the second section are symmetrically arranged relative to the axis of the needle.

[0012] In an optional embodiment, the anchoring portion includes an anchoring platform disposed on the outer periphery of the needle; from the distal end to the proximal end of the needle, the distance from the outer periphery of the anchoring platform to the axis of the needle gradually increases.

[0013] In a second aspect, the utility model provides an ablation electrode kit, the ablation electrode kit comprising a connecting body, a first electrode docking portion, a second electrode docking portion and two of the above-mentioned ablation electrode needles;

[0014] The first electrode docking portion and the second electrode docking portion are both connected to the connection body, and the two ablation electrode needles are respectively connected to the first electrode docking portion and the second electrode docking portion, and the two ablation electrode needles are parallel;

[0015] At least one of the first electrode docking portion and the second electrode docking portion is movably connected to the connecting body to adjust the parallel spacing between the two ablation electrode needles.

[0016] In an optional embodiment, the first electrode docking portion is fixedly connected to the connecting body, the second electrode docking portion is rotatably connected to the connecting body, and the rotation axis of the second electrode docking portion relative to the connecting body is parallel to the axis of the ablation electrode needle;

[0017] The second electrode docking portion is bent so that there is a gap between one end of the second electrode docking portion connected to the ablation electrode needle and the rotation axis thereof relative to the connecting body.

[0018] In an optional embodiment, the first electrode docking portion is bent, and a distance of 5 mm is provided between one end of the first electrode docking portion connected to the ablation electrode needle and the second electrode docking portion relative to the rotation axis of the main body.

[0019] In an optional embodiment, a spacing of 10 mm is provided between one end of the second electrode docking portion connected to the ablation electrode needle and the end thereof relative to the rotation axis of the main body.

[0020] The beneficial effects of the embodiments of the utility model include:

[0021] The ablation electrode needle comprises a needle head and a needle tube; the needle head is connected to the needle tube; wherein the needle head is provided with an anchoring part, and the anchoring part is used for clamping with human tissue.

[0022] The ablation electrode needle is used in the electrode ablation system, and its ablation principle will not be described in detail here; during the ablation process, the needle end of the ablation electrode needle needs to be inserted into the patient's body, and after the ablation electrode needle enters the target tissue position, it can be engaged with the human tissue at the target position through the anchoring part, so as to anchor the needle in this way, thereby avoiding displacement of the needle due to the patient's breathing or heartbeat during the ablation process, thereby improving the stability during use, thereby avoiding the ablation effect being affected by the displacement of the needle, and the overall structure is simple, easy to use, and can effectively reduce the cost of use.

[0023] Furthermore, the utility model provides an ablation electrode kit, which includes a connecting body, a first electrode docking part, a second electrode docking part and two ablation electrode needles. At least one of the first electrode docking part and the second electrode docking part is movably connected to the connecting body to adjust the parallel spacing between the two ablation electrode needles without the need for additional configuration of a complex navigation board device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a schematic diagram of the structure of the needle in the embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the ablation electrode needle in the embodiment of the utility model;

[0027] Figure 3 It is a structural schematic diagram of the first sub-section and the second sub-section in other embodiments of the utility model;

[0028] Figure 4 It is a structural schematic diagram of the annular table in other embodiments of the utility model;

[0029] Figure 5 It is a schematic diagram of the structure of the sub-platform in other embodiments of the utility model;

[0030] Figure 6 This is a schematic diagram of the structure of the ablation electrode kit in an embodiment of the utility model;

[0031] Figure 7 It is a structural schematic diagram of the connection body, the first electrode docking part and the second electrode docking part in the embodiment of the utility model;

[0032] Figure 8 It is a cross-sectional view of the connecting body, the first electrode docking portion and the second electrode docking portion in the embodiment of the utility model;

[0033] Fig. 9 It is a schematic structural diagram of the ablation electrode set in the embodiment of the utility model when the parallel distance between the two ablation electrode needles is the smallest;

[0034] Fig.10 It is a schematic structural diagram of the ablation electrode kit in the embodiment of the utility model when the parallel distance between the two ablation electrode needles is the largest.

[0035] Icons: 100-ablation electrode needle; 110-needle head; 120-needle tube; 130-anchoring part; 111-puncture needle tip; 112-beveled surface; 131-anchoring groove; 132-first subdivision; 133-second subdivision; 134-anchoring platform; 135-annular platform; 136-sub-platform; 200-ablation electrode kit; 210-connecting body; 220-first electrode docking part; 230-second electrode docking part. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] 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.

[0041] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Steep pulse ablation uses high-voltage steep pulse electric fields to create permanent nanoscale perforations in the cell membrane, thereby leading to cell apoptosis. This technology is a new technology in the field of tumor ablation. In recent years, it has attracted more and more attention and has been used in clinical tumor treatment.

[0043] During steep pulse ablation treatment, an electrode needle needs to be inserted into the lesion site of the human body. After the needle tip punctures the target tissue location, the electrode needle can easily shift due to the patient's breathing or heartbeat, thus affecting the ablation effect.

[0044] For the reasons above, please refer to Figure 1 and Figure 2 , this embodiment provides an ablation electrode needle 100, the ablation electrode needle 100 includes a needle head 110 and a needle tube 120; the needle head 110 is connected to the needle tube 120;

[0045] The needle 110 is provided with an anchoring portion 130, and the anchoring portion 130 is used for engaging with human tissue.

[0046] Please refer to Figure 1 and Figure 2 The working principle of the ablation electrode needle 100 is:

[0047] First, the ablation electrode needle 100 includes a needle head 110 and a needle tube 120 ; the needle head 110 is connected to the needle tube 120 ; wherein the needle head 110 is provided with an anchoring portion 130 , and the anchoring portion 130 is used to engage with human tissue.

[0048] The ablation electrode needle 100 is applied to the electrode ablation system, and its ablation principle is not described in detail here; during the ablation process, the needle 110 end of the ablation electrode needle 100 needs to be inserted into the patient's body, and after the ablation electrode needle 100 enters the target tissue position, it can be engaged with the human tissue at the target position through the anchoring part 130, so as to anchor the needle 110 in this way, thereby avoiding the displacement of the needle 110 due to the patient's breathing or heartbeat during the ablation process, thereby improving the stability during use, thereby avoiding the ablation effect from being affected by the displacement of the needle 110, and the overall structure is simple, easy to use, and can effectively reduce the cost of use.

[0049] For further information, please refer to Figure 1 and Figure 2 In the present embodiment, in order to facilitate the insertion of the needle 110 into the patient's body, and after being inserted into the patient's body, the anchoring position of the anchoring portion 130 can correspond to the position of the target tissue, therefore, the distal end of the needle 110 is provided with a puncture needle tip 111, and the puncture needle tip 111 includes at least three beveled surfaces 112, so that the needle 110 can be conveniently inserted into the patient's body, and along the axial direction of the needle 110, the anchoring portion 130 is spaced 1-2 mm from the puncture needle tip 111, and thus, through such a setting, the anchoring position of the anchoring portion 130 can be adjacent to the target tissue and anchored at the target tissue, so as to facilitate subsequent work.

[0050] For further information, please refer to Figure 1-Figure 5 In this embodiment, when configuring the aforementioned anchoring portion 130, its function is to maintain the relative position of the needle body with respect to the target tissue. Based on this, there are multiple configuration methods when configuring the anchoring portion 130, and during use, the needle 110 with different configuration methods can be selected according to the specific usage scenario;

[0051] For details, please refer to Figure 2 In this embodiment, the anchoring portion 130 includes an anchoring groove 131 provided on the needle 110, and the anchoring groove 131 is provided in an annular shape around the axis of the needle 110. That is, the anchoring portion 130 in this embodiment is an annular groove provided on the needle 110 around the axis of the needle 110, and the annular groove is 2 mm away from the puncture needle tip 111.

[0052] In addition, in other embodiments of the present invention, please refer to Figure 3 When the anchoring portion 130 is set as the structural style of the anchoring groove 131, the anchoring groove 131 may also include a first sub-portion 132 and a second sub-portion 133, and the first sub-portion 132 and the second sub-portion 133 are symmetrically arranged relative to the axis of the needle 110. That is, around the axis direction of the needle 110, the anchoring groove 131 is alternately arranged into the first sub-portion 132 and the second sub-portion 133, and the first sub-portion 132 and the second sub-portion 133 are symmetrically arranged. In this arrangement, the anchoring state can be adjusted by rotating the needle 110, so as to facilitate its removal.

[0053] Different from the above-mentioned method of setting the anchoring portion 130 as the anchoring groove 131, in other embodiments of the present invention, the anchoring portion 130 can also be set as the anchoring platform 134. For details, please refer to Figure 4 and Figure 5 The anchoring portion 130 includes an anchoring platform 134 disposed on the outer periphery of the needle 110 .

[0054] When configuring the anchoring platform 134, in order to enable the anchoring platform 134 to be aligned with the tissue after being inserted into the human tissue and to prevent the needle body from shifting, the distance between the outer peripheral surface of the anchoring platform 134 and the axis of the needle 110 gradually increases from the distal end to the proximal end of the needle 110, thereby forming an anti-retraction effect; and when configuring the anchoring platform 134, please refer to Figure 4 , the anchoring platform 134 may include an annular platform 135 disposed around the axis of the needle 110; please refer to Figure 5 The anchoring platform 134 may also include a plurality of sub-platforms 136 distributed around the axis of the needle 110 .

[0055] In the prior art, steep pulse ablation treatment requires a high-voltage steep pulse electric field generating device and multiple electrode needles, which are inserted into the lesion site of the human body. In actual use, two electrode needles are used as positive and negative electrodes in one discharge process, and a navigation board is also required when inserting the needles to ensure that the electrode needles are parallel. Once the electrode needles are not parallel, the electric field will be concentrated at the closer end, which will greatly reduce the ablation area and affect the treatment effect. Therefore, this type of electrode needle brings great inconvenience to the surgical operation, and it is not easy to adjust the distance between the electrodes, which limits the scope of use.

[0056] For the above reasons, please refer to Figure 1-Figure 10 This embodiment further provides an ablation electrode kit 200 based on the above-mentioned ablation electrode needle 100. The ablation electrode kit 200 includes a connecting body 210, a first electrode docking portion 220, a second electrode docking portion 230 and the two above-mentioned ablation electrode needles 100; the first electrode docking portion 220 and the second electrode docking portion 230 are both connected to the connecting body 210, and the two ablation electrode needles 100 are respectively connected to the first electrode docking portion 220 and the second electrode docking portion 230, and the two ablation electrode needles 100 are parallel; wherein, at least one of the first electrode docking portion 220 and the second electrode docking portion 230 is movably connected to the connecting body 210 to adjust the parallel spacing of the two ablation electrode needles 100.

[0057] Therefore, during the use of the ablation electrode kit 200, the two ablation electrode needles 100 are connected to the first electrode docking part 220 and the second electrode docking part 230 respectively, and then the parallel spacing of the two ablation electrode needles 100 can be adjusted by the movement of at least one of the first electrode docking part 220 and the second electrode docking part 230 relative to the connecting body 210, and the parallel spacing of the two ablation electrode needles 100 can be adaptively adjusted according to the needs of use, so that the parallel state of the two ablation electrode needles 100 can be ensured without relying on other navigation structures, and the parallel spacing between the two ablation electrode needles 100 can be adaptively adjusted, thereby ensuring the treatment effect of the ablation area, simplifying the operating steps, improving the flexibility of use, and expanding the scope of use.

[0058] It should be noted that, in the present embodiment, when configuring the above-mentioned first electrode docking portion 220 and second electrode docking portion 230, one or both of the first electrode docking portion 220 and the second electrode docking portion 230 can be movably connected to the connecting body 210. The purpose is to adjust the parallel spacing between the two ablation electrode needles 100 respectively connected to the first electrode docking portion 220 and the second electrode docking portion 230 through the movement of one or both of the first electrode docking portion 220 and the second electrode docking portion 230 relative to the connecting body 210, that is, before or after one or both of the first electrode docking portion 220 and the second electrode docking portion 230 moves relative to the connecting body 210, the two ablation electrode needles 100 respectively connected to the first electrode docking portion 220 and the second electrode docking portion 230 remain in a parallel state.

[0059] On the basis of the above contents, there are many ways to realize that one or both of the first electrode docking part 220 and the second electrode docking part 230 are movably connected to the connecting body 210, and the present embodiment adopts a method in which the first electrode docking part 220 is fixedly connected to the connecting body 210, the second electrode docking part 230 is rotatably connected to the connecting body 210, and the rotation axis of the second electrode docking part 230 relative to the connecting body 210 is parallel to the axis of the ablation electrode needle 100;

[0060] On this basis, in order to enable the rotation of the second electrode docking part 230 relative to the connection body 210 to adjust the parallel spacing between the two ablation electrode needles 100 respectively connected to the first electrode docking part 220 and the second electrode docking part 230, based on this, the second electrode docking part 230 is bent in this embodiment, so that there is a gap between the end of the second electrode docking part 230 connected to the ablation electrode needle 100 and its rotation axis relative to the connection body 210, so that the second electrode docking part 230 has a certain rotation radius when rotating relative to the connection body 210. This embodiment is explained by taking the example that the interval between the end of the second electrode docking part 230 connected to the ablation electrode needle 100 and its rotation axis relative to the connection body 210 is 10 mm, that is, the rotation radius of the second electrode docking part 230 relative to the connection body 210 is 10 mm, and in other embodiments of the utility model, the second electrode docking part 230 can also be adjusted according to the needs of use, so that its rotation radius is other values. It should be noted that in the embodiments of the present invention, since the first electrode docking part 220 and the second electrode docking part 230 can also be rotatably connected to the connecting body 210 at the same time, when the first electrode docking part 220 and the second electrode docking part 230 are both rotatably connected to the connecting body 210, the structural setting principle of the first electrode docking part 220 can be the same as the setting principle of the above-mentioned second electrode docking part 230, which will not be repeated here.

[0061] It can be seen from the above content that the first electrode docking portion 220 of the present embodiment is fixedly connected to the connecting body 210, the second electrode docking portion 230 is rotatably connected to the connecting body 210, and the rotation radius of the second electrode docking portion 230 relative to the connecting body 210 is 10mm. Based on this, the first electrode docking portion 220 of the present embodiment is bent, and the end of the first electrode docking portion 220 connected to the ablation electrode needle 100 is 5mm away from the rotation axis of the second electrode docking portion 230 relative to the connecting body 210, that is, when the second electrode docking portion 230 is rotated, the minimum parallel spacing between the two ablation electrode needles 100 is 5mm (such as Fig. 9 The maximum parallel distance between the two ablation electrode needles 100 is 25 mm (as shown in FIG. Fig.10 As shown), by rotating the second electrode docking portion 230 relative to the connecting body 210, the parallel spacing between the two ablation electrode needles 100 can be adjusted between 5-25mm; based on the foregoing, the minimum parallel spacing between the two can be adjusted by adjusting the structure of the first electrode docking portion 220, and the rotation radius of the second electrode docking portion 230 can be adjusted by adjusting the structure of the second pair of connectors to adapt to different usage requirements.

[0062] Based on the above content, the above-mentioned ablation electrode needle 100 and ablation electrode kit 200 are both used in an electrode ablation system, and the electrode ablation system also includes a pulse generating device, which is electrically connected to the ablation electrode needle 100. The electrode ablation system transmits pulse energy to the ablation electrode through the pulse generating device, and then transmits it to the target tissue through the ablation electrode needle 100, thereby ablating the target tissue. In this process, due to the structural setting of the anchoring portion 130 on the above-mentioned ablation electrode needle 100, it can be anchored in the patient's body, and because the anchoring portion 130 and the puncture needle tip 111 are spaced 1-2mm apart, therefore, when performing an ablation operation, the anchoring portion 130 can be anchored to the target tissue in the patient's body, so as to ensure the ablation effect in this way; and by connecting the two ablation electrode needles 100 to the first electrode docking portion 220 and the second electrode docking portion 111, respectively. 230 connection, and then the parallel distance between the two ablation electrode needles 100 can be adjusted by the movement of at least one of the first electrode docking portion 220 and the second electrode docking portion 230 relative to the connecting body 210, and then the parallel distance between the two ablation electrode needles 100 can be adaptively adjusted according to the needs of use, so that the parallel state between the two ablation electrode needles 100 can be ensured without relying on other navigation structures, and the parallel distance between the two ablation electrode needles 100 can be adaptively adjusted, thereby ensuring the treatment effect of the ablation area, simplifying the operating steps, improving the flexibility of use, and expanding the scope of use.

[0063] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An ablation electrode needle, characterized in that: The ablation electrode needle comprises a needle head and a needle tube; the needle head is connected to the needle tube; Wherein, the needle head is provided with an anchoring portion, and the anchoring portion is used for engaging with human tissue.

2. The ablation electrode needle according to claim 1, characterized in that: The distal end of the needle is provided with a puncture needle tip, and the puncture needle tip includes at least three beveled surfaces; Wherein, along the axial direction of the needle head, the anchoring portion is spaced 1-2 mm from the puncture needle tip.

3. The ablation electrode needle according to claim 2, characterized in that: The anchoring portion includes an anchoring groove formed in the needle head.

4. The ablation electrode needle according to claim 3, characterized in that: The anchoring groove is arranged in an annular manner around the axis of the needle.

5. The ablation electrode needle according to claim 3, characterized in that: The anchoring groove includes a first sub-portion and a second sub-portion, and the first sub-portion and the second sub-portion are symmetrically arranged relative to the axis of the needle.

6. The ablation electrode needle according to claim 2, characterized in that: The anchoring portion includes an anchoring platform disposed on the outer periphery of the needle; From the distal end to the proximal end of the needle, the distance between the outer peripheral surface of the anchoring platform and the axis of the needle gradually increases.

7. An ablation electrode kit, characterized in that: The ablation electrode kit comprises a connecting body, a first electrode docking portion, a second electrode docking portion, and two ablation electrode needles according to any one of claims 1 to 6; The first electrode docking portion and the second electrode docking portion are both connected to the connecting body, the two ablation electrode needles are respectively connected to the first electrode docking portion and the second electrode docking portion, and the two ablation electrode needles are parallel; Wherein, at least one of the first electrode docking portion and the second electrode docking portion is movably connected to the connecting body to adjust the parallel spacing between the two ablation electrode needles.

8. The ablation electrode kit according to claim 7, characterized in that: The first electrode docking portion is fixedly connected to the connecting body, the second electrode docking portion is rotatably connected to the connecting body, and the rotation axis of the second electrode docking portion relative to the connecting body is parallel to the axis of the ablation electrode needle; The second electrode docking portion is bent so that there is a gap between one end of the second electrode docking portion connected to the ablation electrode needle and the rotation axis relative to the connecting body.

9. The ablation electrode kit according to claim 8, characterized in that: The first electrode docking portion is bent, and a distance of 5 mm is between one end of the first electrode docking portion connected to the ablation electrode needle and the second electrode docking portion relative to the rotation axis of the main body.

10. The ablation electrode kit according to claim 8, characterized in that: The distance between the end of the second electrode docking portion connected to the ablation electrode needle and the end thereof relative to the rotation axis of the main body is 10 mm.

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