Plasma surgical equipment, plasma surgical devices and electrode needle structure

Abstract

This utility model relates to a plasma surgical device, a plasma surgical apparatus, and an electrode needle structure. A conductive needle tip is inserted into a cystic tumor or cystic tissue containing internal fluid. The internal fluid is sequentially drawn out through a hollow channel composed of a connecting channel and a conductive channel. Then, external fluids such as plasma water are sequentially injected into the drained tumor or tissue through the connecting and conductive channels. The main unit supplies power to the inner and outer needle tubes, allowing the inner needle tube and conductive needle tip to act as one of the input and output poles, and the outer needle tube to act as the other. This ionizes the external fluids such as plasma water to ablate the tumor or tissue. Because both the internal fluid and the external fluids such as plasma water are transported through relatively large-diameter connecting and conductive channels, blockages are less likely to occur during the procedure, ensuring the smooth progress of the surgery.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a plasma surgical device, a plasma surgical apparatus, and an electrode needle structure. Background Technology

[0002] During plasma ablation surgery, an electrode needle is used to apply an electric current to lesions such as tumors for ablation. During the ablation process, plasma solution needs to be injected into the vicinity of the target tissue through a channel inside the electrode needle. Traditional electrode needle structures use the gap between the inner and outer needle tubes as the injection channel, with an outlet hole on the outer needle tube communicating with this channel. Because the gap between the inner and outer needle tubes is very small, blockage is prone to occur during use, affecting the normal progress of the surgery; furthermore, the traditional electrode needle structure is unsuitable for treating cystic tumors or other lesions. Utility Model Content

[0003] Therefore, it is necessary to provide a plasma surgical device, a plasma surgical apparatus, and an electrode needle structure to address the technical problem of easy clogging.

[0004] The technical solution is as follows:

[0005] On the one hand, an electrode needle structure is provided, comprising:

[0006] The inner needle tube is provided with a conductive channel extending along the axial direction;

[0007] A conductive needle tip, electrically connected to the front end of the inner needle tube, and the conductive needle tip having a through channel extending along the axial direction, the through channel corresponding to and communicating with the conductive channel; and

[0008] An outer needle tube is sleeved on a portion of the outer periphery of the inner needle tube and is insulated from the inner needle tube. The front end of the outer needle tube and the rear end of the conductive needle tip are spaced apart by a first preset distance.

[0009] The technical solution will be further explained below:

[0010] In one embodiment, the electrode needle structure further includes a first insulating sleeve, which is sleeved on the outer periphery of the inner needle tube and located between the front end of the outer needle tube and the rear end of the conductive needle tip.

[0011] In one embodiment, the electrode needle structure further includes a second insulating sleeve, which is sleeved on the outer periphery of the outer needle tube, and the front end of the second insulating sleeve is spaced apart from the front end of the outer needle tube by a second preset distance.

[0012] In one embodiment, the outer diameter of the conductive needle tip is greater than or equal to the outer diameter of the second insulating sleeve.

[0013] In one embodiment, the electrode needle structure further includes a third insulating sleeve, which is sleeved on the outer periphery of the inner needle tube and located inside the outer needle tube, and the front end of the third insulating sleeve is positioned closer to the conductive needle tip than the front end of the outer needle tube.

[0014] In one embodiment, the front end of the third insulating sleeve extends to be flush with the rear end of the conductive needle tip.

[0015] In one embodiment, the front side of the conductive needle tip is provided with an insertion bevel, and the communication channel extends through the insertion bevel.

[0016] In one embodiment, the two opposite sides of the insertion bevel are respectively provided with a first cutting edge bevel and a second cutting edge bevel.

[0017] On the other hand, a plasma surgical device is provided, including a handle and the aforementioned electrode needle structure, wherein the rear end of the inner needle tube and the rear end of the outer needle tube are both connected to the handle.

[0018] On another front, a plasma surgical device is provided, comprising an energy source, a pump, and a suction device, wherein the energy source is electrically connected to the inner needle tube and the outer needle tube, the pump is connected to the inner needle tube to supply plasma liquid, and the suction device is connected to the inner needle tube to create a suction negative pressure inside the inner needle tube.

[0019] The plasma surgical device, plasma surgical apparatus, and electrode needle structure described in the above embodiments, during the treatment of cystic tumors or tissues, involve inserting a conductive needle tip into the cystic tumor or cystic tissue containing internal fluid. The internal fluid is sequentially drawn out through a hollow channel composed of a connecting channel and a conductive channel. After the internal fluid is completely or nearly completely drawn out, external liquids such as plasma water are sequentially injected into the drained tumor or tissue through the conductive channel and the connecting channel. An energy source supplies power to the inner and outer needle tubes, allowing the inner needle tube and conductive needle tip to act as one of the input and output poles, and the outer needle tube to act as the other. This ionizes the external liquids such as plasma water to ablate the tumor or tissue. Because both the internal fluid and external liquids such as plasma water are transported through relatively large-diameter conductive and connecting channels, blockages are less likely to occur during the procedure, ensuring the smooth progress of the surgery. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the structure of a plasma surgical device according to one embodiment;

[0023] Figure 2 for Figure 1 A schematic diagram of the structure of the electrode needle of the plasma surgical device, which is inserted into a cystic tumor or cystic tissue containing fluid to aspirate the internal fluid.

[0024] Figure 3 for Figure 1 A schematic diagram of the structure of the electrode needle of the plasma surgical device, which is inserted into a cystic tumor or cystic tissue whose internal fluid has been sucked out, to inject external fluids such as plasma water.

[0025] Figure 4 for Figure 1 A schematic diagram of the conductive needle tip of the electrode needle structure in a plasma surgical device.

[0026] Explanation of reference numerals in the attached figures:

[0027] 10. Plasma surgical device; 100. Handle; 200. Electrode needle structure; 210. Inner needle tube; 211. Conductive channel; 220. Conductive needle tip; 221. Connecting channel; 222. Insertion bevel; 223. First blade bevel; 224. Second blade bevel; 225. Tip; 230. Outer needle tube; 240. First insulating sleeve; 250. Second insulating sleeve; 260. Third insulating sleeve. Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0029] In one embodiment, a plasma surgical device is provided, including an energy source (not shown), a plasma surgical apparatus 10, a pump, and a suction device. The energy source is electrically connected to the plasma surgical apparatus 10 to provide electrical energy. The pump is connected to an inner needle tube 210 of the plasma surgical apparatus 10 to supply plasma liquid when the energy source ablates target tissue. The suction device is also connected to the inner needle tube 210 of the plasma surgical apparatus 10 to aspirate internal fluid from cystic tumors or cystic tissue in aspiration mode.

[0030] The plasma surgical devices of each embodiment can be used to aspirate the internal fluid of cystic tissue or cystic tumors, and can also be used to ablate the target tissue using plasma ablation mode when treating solid tumors or solid tissues (with solid interiors), or to ablate after aspirating the internal fluid of cystic tissues. Compared with existing plasma surgical devices, this adds the function of treating cystic tissues / cystic tumors.

[0031] It should be noted that the energy source can be any existing device capable of providing electrical energy for tissue ablation; since it can be an existing device, it will not be elaborated further here. Control valves can be provided between the pump and the inner needle tube 210, and between the aspiration device and the inner needle tube 210, so that one of the pump or aspiration device can be connected to the inner needle tube 210 under different surgical procedures.

[0032] It should be emphasized that the suction device may include a negative pressure source, and waste liquid such as cyst fluid can be discharged by setting a waste liquid cylinder between the negative pressure source and the inner needle tube; and the pump may be a peristaltic pump. The suction device and pump are existing devices and will not be described in detail here.

[0033] like Figure 1 As shown, in one embodiment, a plasma surgical device 10 is provided, including a handle 100 and an electrode needle structure 200. The handle 100 is connected to the electrode needle structure 200, allowing the electrode needle structure 200 to be inserted into a cystic tumor or cystic tissue containing fluid during surgery to extract the fluid, or to be inserted into target tissue for ablation. Furthermore, the electrode needle structure 200 is less prone to blockage during surgery, ensuring the normal progress of the procedure.

[0034] It should be noted that the handle 100 can be an existing structure that is easy to hold, and since it can be an existing structure, it will not be described in detail here.

[0035] like Figures 2 to 4 As shown, in one embodiment, an electrode needle structure 200 is provided, including an inner needle tube 210, a conductive needle tip 220, and an outer needle tube 230.

[0036] The inner needle tube 210 is provided with a axially extending guide channel 211.

[0037] The inner needle tube 210 is electrically connected to the energy source.

[0038] The rear end of the inner needle tube 210 is connected to the handle 100 for assembly and fixation.

[0039] The conductive needle tip 220 is electrically connected to the front end of the inner needle tube 210, thereby enabling the inner needle tube 210 and the conductive needle tip 220 to serve as either an input or output electrode. Furthermore, the conductive needle tip 220 is provided with a connecting channel 221 extending through the conductive needle tip 220 along the axial direction, and the connecting channel 221 is correspondingly connected to the conductive channel 211. (See also...) Figure 2 , Figure 3 The conductive channel 211 and the connecting channel 221 are used to construct a hollow channel with a through front end. This hollow channel can be used for aspiration of cystic fluid in cystic tumors or tissues, and also to provide a path for plasma to reach the surgical site.

[0040] The conductive needle tip 220 can be made of a conductive material. The conductive needle tip 220 has a pointed tip 225.

[0041] The outer needle tube 230 is sleeved on a portion of the outer periphery of the inner needle tube 210 and is insulated from the inner needle tube 210 to prevent a direct short circuit between the outer needle tube 230 and the inner needle tube 210. Furthermore, the front end of the outer needle tube 230 and the rear end of the conductive needle tip 220 are spaced apart by a first preset distance to prevent a direct short circuit between the outer needle tube 230 and the conductive needle tip 220.

[0042] It should be noted that the actual length of the first preset spacing can be flexibly adjusted or set according to the actual insulation requirements, and there are no restrictions here.

[0043] The outer needle tube 230 is electrically connected to the energy source, thereby enabling the outer needle tube 230 to become the other pole among the input and output poles.

[0044] The rear end of the outer needle tube 230 is connected to the handle 100 for assembly and fixation.

[0045] It should be noted that, in the embodiments of this application, the front end or front side refers to one end or one side close to the tip 225 of the conductive needle tip 220, and correspondingly, the rear end or rear side refers to one end or one side away from the tip 225 of the conductive needle tip 220.

[0046] In the above embodiment, the electrode needle structure 200, during surgery to treat cystic tumors or tissues, inserts a conductive needle tip 220 into the cystic tumor or cystic tissue containing internal fluid, and sequentially draws out the internal fluid through a hollow channel composed of a connecting channel 221 and a conductive channel 211 (e.g., Figure 2 As shown), after the internal fluid is completely or nearly completely aspirated, external fluids such as plasma water are injected sequentially into the tumor or tissue whose internal fluid has been drained through the conductive channel 211 and the connecting channel 221 (e.g., Figure 3 As shown, an energy source powers the inner needle tube 210 and the outer needle tube 230, enabling the inner needle tube 210 and the conductive needle tip 220 to serve as one of the input and output poles, and the outer needle tube 230 to serve as the other. This allows for the ionization of external liquids such as plasma water to ablate tumors or tissues. Since both the internal liquid and the external liquids such as plasma water are transported through the relatively large-diameter conductive channel 211 and connecting channel 221, blockages are less likely to occur during the procedure, ensuring the normal progress of the surgery.

[0047] Compared to the traditional method of using the gap between the inner needle tube 210 and the outer needle tube 230 as a delivery channel, the method of delivering liquids through the conductive channel 211 within the inner needle tube 210 and the connecting channel 221 of the conductive needle tip 220 is less prone to blockage by tissue. Furthermore, the conductive channel 211 within the inner needle tube 210 and the connecting channel 221 of the conductive needle tip 220 can be used not only for the delivery of plasma solutions but also for other applications, making it suitable not only for the treatment of solid tissues but also for the treatment of cystic tissues / tumors.

[0048] like Figure 2 and Figure 3 As shown, in one embodiment, the electrode needle structure 200 further includes a first insulating sleeve 240, which is sleeved on the outer periphery of the inner needle tube 210 and located between the front end of the outer needle tube 230 and the rear end of the conductive needle tip 220. Thus, the first insulating sleeve 240 isolates the front end of the outer needle tube 230 from the rear end of the conductive needle tip 220, improving insulation performance and preventing direct short circuits.

[0049] like Figure 2 As shown, further, the outer diameter of the first insulating sleeve 240 is equal to the outer diameter of the outer needle tube 230, so that the outer side wall of the first insulating sleeve 240 is flush with the outer side wall of the outer needle tube 230, which is beneficial for installation and positioning.

[0050] like Figure 2 and Figure 3As shown, in one embodiment, the electrode needle structure 200 further includes a second insulating sleeve 250, which is sleeved on the outer periphery of the outer needle tube 230, thereby preventing accidental short circuits and avoiding safety accidents or damage to normal tissue. Furthermore, the front end of the second insulating sleeve 250 is spaced apart from the front end of the outer needle tube 230 by a second preset distance, allowing a portion of the front end of the outer needle tube 230 to be exposed and able to contact the target tissue for ablation upon electrical current application.

[0051] It should be noted that the actual length of the second preset spacing can be flexibly adjusted or set according to the actual ablation requirements, and there are no restrictions here.

[0052] Furthermore, the outer diameter of the conductive needle tip 220 (e.g. Figure 2 As shown in D1) is greater than or equal to the outer diameter of the second insulating sleeve 250 (e.g. Figure 2 (As shown in D2). This makes the entire electrode needle structure 200 appear thicker at the front end and relatively thinner at the rear end, or the front and rear ends are of uniform thickness. This avoids obstacles such as step surfaces during puncture insertion, ensuring smooth puncture and preventing additional damage to normal tissue.

[0053] Specifically, the outer diameter of the conductive needle tip 220 and the outer diameter of the second insulating sleeve 250 can be flexibly adjusted and designed according to the actual puncture requirements, and no restrictions are imposed here.

[0054] like Figure 2 and Figure 3 As shown, in one embodiment, the electrode needle structure 200 further includes a third insulating sleeve 260, which is sleeved on the outer periphery of the inner needle tube 210 and located inside the outer needle tube 230. Furthermore, the front end of the third insulating sleeve 260 is positioned closer to the conductive needle tip 220 than the front end of the outer needle tube 230. This ensures that the inner needle tube 210 and the outer needle tube 230 will not short-circuit, guaranteeing the normal operation of ionization ablation.

[0055] like Figure 2 and Figure 3 As shown, further, the front end of the third insulating sleeve 260 extends to be flush with the rear end of the conductive needle tip 220. This ensures sufficient insulation between the inner needle tube 210 and the outer needle tube 230, effectively preventing short circuits between them.

[0056] like Figures 2 to 4As shown, in one embodiment, the conductive needle tip 220 has an insertion bevel 222 on its front side, and the connecting channel 221 extends through the insertion bevel 222. This improves the sharpness of the puncture, ensures that external liquids such as plasma water can reach the drained tumor or tissue for ablation, and prevents blockage.

[0057] like Figure 4 As shown, furthermore, the two opposite sides of the insertion bevel 222 are respectively provided with a first cutting edge bevel 223 and a second cutting edge bevel 224. In this way, the front end of the entire conductive needle tip 220 presents a triangular pyramid-like structure, which helps to improve the sharpness of the conductive needle tip 220.

[0058] It is worth mentioning that the plasma surgical device or plasma surgical equipment with the electrode needle structure described in the above embodiments can be applied to thyroid tumor tissue, and plasma ablation of other tissues is not excluded.

[0059] It should be noted that "a certain body" or "a certain part" can be a portion of the corresponding "component," meaning that "a certain body" or "a certain part" is integrally formed and manufactured with the "other parts of the component"; or it can be an independent component that can be separated from the "other parts of the component," meaning that "a certain body" or "a certain part" can be manufactured independently and then combined with the "other parts of the component" to form a whole. The expression of "a certain body" or "a certain part" in this application is only one embodiment for ease of reading, and is not intended to limit the scope of protection of this application. Any technical solution that includes the above features and has the same function should be understood as an equivalent technical solution of this application.

[0060] It should be noted that the components included in the terms "unit," "component," "mechanism," and "device" of this application can be flexibly combined, enabling modular production according to actual needs and facilitating modular assembly. The division of the above-mentioned components in this application is merely one embodiment for ease of reading and is not intended to limit the scope of protection of this application. Any solution that includes the above-mentioned components and has the same function should be understood as an equivalent technical solution of this application.

[0061] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more of the related listed items.

[0062] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0064] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0065] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component. Furthermore, when a component is considered to be "fixed transmission connection" to another component, the two can be fixed in a detachable or non-detachable manner, as long as power transmission can be achieved, such as sleeve, snap-fit, integral molding, welding, etc., which can be achieved in the prior art and will not be elaborated here. When a component is perpendicular or approximately perpendicular to another component, it means that the two are ideally perpendicular, but due to the influence of manufacturing and assembly, there may be a certain degree of perpendicularity error. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0066] It should also be understood that, in interpreting the connection or positional relationships of components, although not explicitly described, connection and positional relationships are interpreted to include a range of error, which should be within the acceptable deviation range of a specific value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0067] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An electrode needle structure, characterized in that, include: The inner needle tube is provided with a conductive channel extending along the axial direction; A conductive needle tip, electrically connected to the front end of the inner needle tube, and the conductive needle tip having a through channel extending along the axial direction, the through channel corresponding to and communicating with the conductive channel; and An outer needle tube is sleeved on a portion of the outer periphery of the inner needle tube and is insulated from the inner needle tube. The front end of the outer needle tube and the rear end of the conductive needle tip are spaced apart by a first preset distance.

2. The electrode needle structure according to claim 1, characterized in that, The electrode needle structure also includes a first insulating sleeve, which is sleeved on the outer periphery of the inner needle tube and located between the front end of the outer needle tube and the rear end of the conductive needle tip.

3. The electrode needle structure according to claim 1, characterized in that, The electrode needle structure also includes a second insulating sleeve, which is sleeved on the outer periphery of the outer needle tube, and the front end of the second insulating sleeve is spaced apart from the front end of the outer needle tube by a second preset distance.

4. The electrode needle structure according to claim 3, characterized in that, The outer diameter of the conductive needle tip is greater than or equal to the outer diameter of the second insulating sleeve.

5. The electrode needle structure according to claim 1, characterized in that, The electrode needle structure also includes a third insulating sleeve, which is sleeved on the outer periphery of the inner needle tube and located inside the outer needle tube, and the front end of the third insulating sleeve is positioned closer to the conductive needle tip than the front end of the outer needle tube.

6. The electrode needle structure according to claim 5, characterized in that, The front end of the third insulating sleeve extends to be flush with the rear end of the conductive needle tip.

7. The electrode needle structure according to any one of claims 1 to 6, characterized in that, The front side of the conductive needle tip is provided with an insertion bevel, and the connecting channel extends through the insertion bevel.

8. The electrode needle structure according to claim 7, characterized in that, The two sides opposite to each other of the insertion inclined surface are respectively provided with a first cutting edge inclined surface and a second cutting edge inclined surface.

9. A plasma surgical device, characterized in that, The device includes a handle and an electrode needle structure as described in any one of claims 1 to 8, wherein the rear end of the inner needle tube and the rear end of the outer needle tube are both connected to the handle.

10. A plasma surgical device, characterized in that, The device includes an energy source, a pump, and a suction device, as well as the plasma surgical apparatus as described in claim 9. The energy source is electrically connected to the inner needle tube and the outer needle tube. The pump can be connected to the inner needle tube to supply plasma liquid, and the suction device can be connected to the inner needle tube to create a suction negative pressure inside the inner needle tube.

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