Plasma radio frequency ablation electrode

Abstract

The utility model discloses a plasma radiofrequency ablation electrode which comprises an ablation portion of a tubular structure and a holding portion used for installing the ablation portion, the holding portion has a negative pressure extraction function, one end of the ablation portion is provided with an electrode disc and an electrode base used for fixing the electrode disc, the electrode base is of a tubular structure, and the electrode base is provided with a negative pressure extraction function. An electrode catheter with a conductive function is integrally connected to the middle of the electrode disc, an electrode wire is further fixed to the curved surface of the electrode catheter, and the electrode disc is fixed to the end of the ablation part through glue injection between the electrode catheter and the electrode base. Wherein the electrode catheter conveys tissue fluid in a human body and ablates fallen tissues through the electrode disc. The electrode wire is fixed on the electrode catheter, the electrode catheter and the electrode disc are integrally connected, the firmness of the electrode disc is further improved under the fixation of the electrode holder and the electrode wire, and meanwhile, the phenomenon that ablated tissue adheres to the surface of the electrode disc is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electrode, specifically, relates to a plasma radio frequency ablation electrode. BACKGROUND

[0002] The radio frequency plasma ablation electrode forms a plasma sheath layer on the electrode surface through specific frequency alternating current. + - + The radio frequency plasma ablation electrode can realize the treatment of the granules of the human body tissue falling and the treatment of the tissue fluid and foreign matter.

[0003] The electrode wire is often exposed on the outer surface of the electrode disc, and the electrode wire exposed on the surface of the electrode disc is easy to cause the electrode disc with the negative pressure extraction function to be blocked. TECHNICAL PROBLEM

[0004] The utility model discloses a kind of plasma radio frequency ablation electrodes to solve the technical problem that electrode disc is easy to fall off in the ablation process of prior art plasma radio frequency ablation electrode.

[0005] To achieve the above object, the utility model adopts the following technical scheme: a kind of plasma radio frequency ablation electrode, including the ablation part of tubular structure and the holding part for installing ablation part, the holding part has negative pressure extraction function, the ablation part one end is provided with electrode disc and the electrode seat for fixing electrode disc, wherein electrode seat is tubular structure, the middle part of the electrode disc is integrally connected with the electrode catheter with the electric function, electrode wire is also fixed on the outer curved surface of the electrode catheter, the electrode catheter and electrode seat are fixed in the end of ablation part by injection glue between electrode disc, wherein electrode catheter is conveyed into the tissue fluid and ablation fallen tissue in human body through electrode disc.

[0006] ​​Preferably, one end of the ablation part is provided with an inclined plane, and the other end is inserted into and fixed from one end of the holding part; the end of the ablation part is increased in area by the inclined plane, and the phenomenon of adhesion of the ablation part is reduced.

[0007] Preferably, a first through hole is arranged on the electrode disc, and a second through hole is arranged on one end of the electrode guide tube, wherein the first through hole and the second through hole are in communication with each other, so that the electrode disc has a conveying function.

[0008] Preferably, the outer diameter of the electrode guide tube is smaller than the inner diameter of the electrode seat, so that the electrode disc, the electrode seat and the electrode guide tube form a glue injection cavity, and the electrode guide tube is fixed on the electrode seat by glue injection in the glue injection cavity.

[0009] Preferably, the electrode wire is fixed between the electrode guide tube and the electrode seat, and the electrode wire is arranged close to the electrode disc, so that the glue injection depth of the electrode wire is increased.

[0010] Preferably, the outer surface of the electrode guide tube is sleeved with a second suction tube, and the fixed end of the electrode wire is located at the end of the second suction tube; wherein the two ends of the electrode seat can be glued to fix the electrode wire and the second suction tube between the electrode guide tube and the electrode seat.

[0011] Preferably, one end of the electrode seat is provided with a second protruding part, the outer diameter of the second protruding part is smaller than the outer diameter of the electrode seat, and the second protruding part of the electrode seat is inserted and fixed in the end of the ablation part.

[0012] Preferably, the outer side of the second suction tube is provided with an insulating tube, and the insulating tube is used for mounting the electrode wire.

[0013] Preferably, the other end of the holding part is further provided with a cable and a first suction tube for connecting the electrode wire; the first suction tube and the second suction tube are in communication with each other.

[0014] Beneficial effects: the electrode disc and the electrode guide tube arranged at the end of the ablation part of the application are integrally connected, the electrode guide tube is inserted into the ablation part, the electrode seat is arranged between the ablation part and the electrode disc, the electrode guide tube is fixed in the ablation part by glue injection through the electrode seat, and the electrode wire is further fixed and connected on the outer curved surface of the electrode guide tube, so that the electrode wire and the electrode seat firmly fix the electrode disc at the end of the ablation part, avoid the electrode wire from being pulled out of the electrode disc, and reduce the adhesion of the ablated tissue on the surface of the electrode disc. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A rear view of the plasma radio frequency ablation electrode is provided for the utility model;

[0016] Figure 2 A formal view of the plasma radio frequency ablation electrode is provided for the utility model;

[0017] Figure 3 is a sectional view of A-A of Figure 2

[0018] Figure 4 is a local hidden schematic view of the plasma radio frequency ablation electrode according to the present application;

[0019] Figure 5 is a sectional view of B-B of Figure 3

[0020] Figure 6 is a sectional view of C-C of Figure 4

[0021] Legend:

[0022] 1, holding part; 11, first protruding part; 2, first suction tube; 3, cable; 4, ablation part; 5, second suction tube; 601, first through hole; 602, second through hole; 61, electrode disc; 62, electrode catheter; 63, electrode wire; 7, insulating tube; 8, electrode base; 80, glue injection cavity; 81, second protruding part. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application; the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] Reference​​​Figures 1-6 The utility model provides an embodiment, a kind of plasma radiofrequency ablation electrode, including the ablation part 4 of tubular structure and the holding part 1 for installing ablation part 4, the holding part 1 have negative pressure extraction function;

[0026] The one end of the ablation part 4 is provided with electrode disc 61 and electrode holder 8 for fixing electrode disc 61, the electrode holder 8 is tubular structure;Wherein the middle part of electrode disc 61 is integrally connected with the electrode catheter 62 with the electrically conductive function, the outer curved surface of the electrode catheter 62 is also fixed with electrode wire 63, the electrode catheter 62 and electrode holder 8 are fixed in the end of ablation part 4 by glue injection between electrode disc 61, wherein electrode catheter 62 is transported into the tissue fluid and ablation shedded tissue in human body via electrode disc 61.

[0027] In prior art, electrode wire 63 is often threaded from electrode disc 61 and electrode disc 61 is fixed, electrode wire 63 is exposed on the surface of electrode disc 61 and can easily cause the phenomenon of clogging of electrode disc 61 with negative pressure extraction function, and the adhesion of ablation tissue to electrode wire 63 can affect the ablation effect of electrode disc 61.In the present application, electrode wire 63 is placed in the interior of electrode holder 8 or ablation part 4, and electrode wire 63 is fixed on electrode catheter 62, wherein electrode catheter 62 and electrode disc 61 are integrally connected, so that the energy of electrode wire 63 is transmitted to electrode disc 61, and electrode wire 63 is prevented from being threaded from electrode disc 61, thereby reducing the adhesion of ablation tissue to the surface of electrode disc 61;Meanwhile, electrode wire 63 and electrode holder 8 fix electrode disc 61.Wherein the outer diameter of electrode catheter 62 is smaller than the inner diameter of electrode holder 8, so that electrode disc 61, electrode holder 8 and electrode catheter 62 form glue injection cavity 80, and electrode catheter 62 is fixed on electrode holder 8 by glue injection in glue injection cavity 80, and electrode holder 8 is fixed on ablation part 4, and electrode catheter 62 and electrode disc 61 are integrally connected in the present embodiment, so that the firmness of electrode disc 61 is further improved.In the present embodiment, electrode disc 61 is obliquely arranged to effectively increase the contact area of electrode disc 61, and reduce the clogging phenomenon of electrode disc 61.In the present embodiment, electrode wire 63 can be fixed on electrode catheter 62 by welding, bending and pressing, bending part or circumferential winding.In the present embodiment, electrode holder 8 is located between electrode disc 61 and ablation part 4.

[0028] As a further improved embodiment, the one end of the ablation part 4 is provided with an inclined plane, and the other end is inserted and fixed from one end of the holding part 1.In the present embodiment, the end of ablation part 4 increases the area of ablation part 4 by arranging an inclined plane, and the contact area of the inclined plane of ablation part can also be controlled, so that ablation part 4 has a stripping function, thereby realizing the cleaning of ablation tissue in the body;Meanwhile, the adhesion phenomenon of ablation part 4 is also reduced.

[0029] As a further improved embodiment, the electrode disc 61 is provided with a first through hole 601, and the electrode conduit 62 is provided with a second through hole 602 at one end, wherein the first through hole 601 and the second through hole 602 are in communication with each other, and the axial section of the second through hole 602 is in the shape of a rectangle or an isosceles trapezoid. When the axial section of the second through hole 602 is in the shape of an isosceles trapezoid, the small-diameter end of the second through hole 602 is located on the electrode disc 61, thereby reducing the clogging of the electrode conduit 62. Further improvement of the present embodiment is that the end of the first through hole 601 is rounded.

[0030] As a further improved embodiment, the electrode wire 63 is fixed between the electrode conduit 62 and the electrode seat 8, and the electrode wire 63 is arranged close to the electrode disc 61, so that the glue injection depth of the electrode wire 63 is increased, thereby improving the firmness of the electrode wire 63. By tensioning one end of the electrode wire 63, the electrode disc 61 can also be effectively fixed.

[0031] As a further improved embodiment, the outer surface of the electrode conduit 62 is sleeved with a second suction pipe 5, and the fixed end of the electrode wire 63 is located at the end of the second suction pipe 5. Both ends of the electrode seat 8 can be glued to fix the electrode wire 63 and the second suction pipe 5 between the electrode conduit 62 and the electrode seat 8, thereby improving the glue injection fullness of the electrode seat 8 and the electrode conduit 62. At the same time, the electrode disc 61 blocks the glue injection cavity 80, the glue injected into the glue injection cavity 80 fixes the electrode disc 61, and the electrode disc 61 prevents the glue in the glue injection cavity 80 from overflowing.

[0032] As a further improved embodiment, one end of the electrode seat 8 is provided with a second protruding part 81, and the outer diameter of the second protruding part 81 is smaller than that of the electrode seat 8. The second protruding part 81 of the electrode seat 8 is inserted into the end of the ablation part 4, so that the electrode seat 8 and the ablation part 4 are fixed to each other. Glue injection can improve the firmness of the electrode seat 8 and the ablation part 4.

[0033] As a further improved embodiment, the second suction pipe 5 is a hard pipe, and preferably a stainless steel pipe or a plastic pipe. In the present embodiment, the second suction pipe 5 is a hard pipe, which can avoid bending of the second suction pipe 5 and effectively support the electrode disc 61, so that the electrode disc 61 can accurately perform ablation operation.

[0034] As a further improved embodiment, the outer side of the second suction pipe 5 is provided with an insulating pipe 7, and the insulating pipe 7 is used to install the electrode wire 63.

[0035] The insulating tube 7 can be inserted into the electrode seat 8, wherein the number of the insulating tube 7 is at least one. In the embodiment, the safety of the ablation part 4 is improved by arranging the insulating tube 7 between the ablation part 4 and the second suction tube 5 for mounting the electrode wire 63. The second suction tube 5 is a hard tube, so the insulating tube 7 is easy to straighten, thus the electrode wire 63 can assist the electrode catheter 62 to be fixed.

[0036] As a further improved embodiment, the other end of the holding part 1 is further provided with the cable 3 and the first suction tube 2; the first suction tube 2 and the second suction tube 5 are communicated with each other, and the first suction tube 2 has a negative pressure extraction function for the electrode catheter 62 by an external negative pressure pump.

[0037] As a further improved embodiment, the holding part 1 is further provided with the first protruding part 11 for fixing the cable 3 and the first suction tube 2, and the cable 3 and the first suction tube 2 are arranged in the first protruding part 11, the cable 3 is used for connecting the electrode wire 63, and the first suction tube 2 is used for connecting the second suction tube 5.

[0038] Finally, it should be noted that the above only for the preferred embodiments of the present application, and not for the limitation of the present application, although the foregoing detailed description of the present application, for the skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of the present application.

Claims

1. A radiofrequency ablation electrode of the type comprising an ablation portion (4) in the form of a tubular structure and a grip portion (1) for mounting the ablation portion (4), said grip portion (1) having a negative pressure extraction function, characterized in that: One end of the ablation part (4) is provided with an electrode disc (61) and an electrode seat (8) for fixing the electrode disc (61), wherein the electrode seat (8) is in a tubular structure, the middle part of the electrode disc (61) is integrally connected with an electrode catheter (62) having a conductive function, the outer curved surface of the electrode catheter (62) is further fixed with an electrode wire (63), the electrode disc (61) is fixed at the end of the ablation part (4) by glue injection between the electrode catheter (62) and the electrode seat (8), and the electrode catheter (62) delivers tissue fluid and ablated tissue into the human body through the electrode disc (61).

2. The radiofrequency ablation electrode according to claim 1, characterized in that: One end of the ablation part (4) is provided with an inclined plane, and the other end is inserted and fixed from one end of the holding part (1).

3. The radiofrequency ablation electrode according to claim 1, wherein: The electrode disc (61) is provided with a first through hole (601), and the electrode catheter (62) is provided with a second through hole (602), wherein the first through hole (601) and the second through hole (602) are in communication with each other.

4. The radiofrequency ablation electrode according to claim 3, wherein: The outer diameter of the electrode catheter (62) is smaller than the inner diameter of the electrode seat (8), so that the electrode disc (61), the electrode seat (8) and the electrode catheter (62) form a glue injection cavity (80), and the electrode catheter (62) is fixed on the electrode seat (8) by glue injection in the glue injection cavity (80).

5. The radiofrequency ablation electrode according to claim 4, wherein: The electrode wire (63) is fixed between the electrode catheter (62) and the electrode seat (8), and the electrode wire (63) is arranged close to the electrode disc (61), so that the glue injection depth of the electrode wire (63) is increased.

6. The radiofrequency ablation electrode according to claim 5, wherein: The outer surface of the electrode catheter (62) is sleeved with a second suction tube (5), and the fixed end of the electrode wire (63) is located at the end of the second suction tube (5); wherein the two ends of the electrode seat (8) can be glued to fix the electrode wire (63) and the second suction tube (5) between the electrode catheter (62) and the electrode seat (8).

7. The radiofrequency ablation electrode according to claim 5, wherein: One end of the electrode seat (8) is provided with a second protruding part (81), the outer diameter of the second protruding part (81) is smaller than the outer diameter of the electrode seat (8), and the second protruding part (81) of the electrode seat (8) is inserted and fixed in the end of the ablation part (4).

8. The radiofrequency ablation electrode according to claim 6, wherein: The outer side of the second suction tube (5) is provided with an insulating tube (7), and the insulating tube (7) is used for installing the electrode wire (63).

9. The radiofrequency ablation electrode according to claim 6, wherein: The second suction tube (5) is a plastic tube.

10. The radiofrequency ablation electrode according to claim 6, wherein: The other end of the holding part (1) is further provided with a cable (3) for connecting the electrode wire (63) and a first suction tube (2); the first suction tube (2) and the second suction tube (5) are in communication with each other.

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