Plasma radio frequency ablation electrode

Abstract

The utility model discloses a plasma radiofrequency ablation electrode which comprises a connecting rod used for being placed in a human body and a handle used for installing the connecting rod, an electrode tip is arranged at the end of the connecting rod, the outer surface of the connecting rod is in sliding connection with a scraping knife tube, one end of the scraping knife tube is placed in the handle, and the handle can drive the scraping knife tube to slide in the axial direction. Meanwhile, the scraping knife tube rotates in the radial direction; when the scraping knife tube is located at the initial position, the scraping knife tube is far away from the electrode tip, so that the electrode tip is arranged outside the scraping knife tube; and when the scraping knife tube is driven to move to the electrode tip, the scraping knife tube covers and contacts with the electrode tip to remove human tissues adhered to the outer surface of the electrode tip. According to the electrode tip cleaning device, the scraping knife tube is controlled by the handle to move in the axial direction and rotate, when the scraping knife tube makes contact with the electrode tip, the outer surface of the electrode tip is cleaned by repeatedly driving the scraping knife tube to move, and an operator does not need to repeatedly take out the electrode tip from the human body, and ablation treatment can be conducted on human tissue for a long time.

Description

TECHNICAL FIELD

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

[0002] The plasma radiofrequency ablation electrode can heat the tissue to 40-70 DEG C through the action of radiofrequency current, makes the lesion region tissue cell freeze and necrosis, thereby realizes the ablation of pathological tissue, and the plasma radiofrequency ablation electrode is usually placed into the human body by the rod piece with small diameter, and the end part is provided with the electrode head to ablate the pathological tissue in the human body.

[0003] The existing plasma radiofrequency ablation electrode is easy to adhere to the electrode head in the actual operation process, which reduces the ablation effect of the electrode head, and the operator needs to take out or clean the adhered tissue of the electrode with the cooperation of other cleaning tools, which is also easy to contaminate the electrode head in the use process. To solve the technical problem that the electrode head of the plasma radiofrequency ablation electrode is easy to adhere in the ablation process, a kind of plasma radiofrequency ablation electrode is provided. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of plasma radiofrequency ablation electrodes to solve the technical problem that the electrode head of the plasma radiofrequency ablation electrode is easy to adhere in the ablation process and affect electrode output effect.

[0005] To achieve the above object, the utility model adopts the following technical scheme: a kind of plasma radiofrequency ablation electrode, including the connecting rod for being placed into human body and the handle for installing connecting rod, the end of the connecting rod is provided with electrode head, the outer surface of the connecting rod is slidably connected with the cutter tube, and one end of the cutter tube is placed into handle, wherein the cutter tube and handle are slidably arranged, handle can drive the axial sliding of cutter tube, simultaneously, cutter tube radially rotates;When cutter tube is in initial position, cutter tube is away from electrode head, so that electrode head is placed outside cutter tube;When driving cutter tube moves to electrode head, cutter tube removes the human tissue adhered to the outer surface of electrode head by covering and contacting.

[0006] Preferably, the second groove is provided on the outer surface of the handle along the long edge direction, the groove bottom of the second groove is provided with the second through hole penetrating through one side of the handle, and the sliding rod is installed in the second through hole;One end of the sliding rod is provided with a sliding block arranged in the second groove;The other end of the sliding rod is provided with a shaft sleeve movably arranged in the handle;The cutter tube is installed in the shaft sleeve, and the inside of the shaft sleeve is provided with a second protruding portion for limiting the axial movement of the cutter tube, so that the cutter tube rotates circumferentially in the shaft sleeve.

[0007] Preferably, the second protruding part is a bearing or a ring-shaped stopper, and the number of the second protruding part is at least one.

[0008] Preferably, the end of the shaft sleeve is further provided with a ring-shaped cover, and the cover is detachable, so that the second protruding part is convenient to install or detach, and the axial movement space of the second protruding part is limited.

[0009] Preferably, the handle is in a columnar structure, the end of the handle is provided with a first through hole, the first through hole penetrates through both ends of the handle, the inside of the handle is further provided with a first recess for placing the shaft sleeve, the diameter of the first recess is not less than the outer diameter of the shaft sleeve, one end of the handle is used for installing the cutter tube, and the other end is used for installing the guide wire.

[0010] Preferably, the curved surface of the handle is provided with a detachable guide rod, one end of the guide rod is a torque receiving part, and the other end is inserted into the pipe wall of the cutter tube, the curved surface of the cutter tube placed in the handle is provided with a guide groove, the guide groove is used for installing the guide rod, and when the slide rod drives the cutter tube to move axially, the cutter tube is rotated radially under the limiting cooperation of the guide groove and the guide rod.

[0011] Preferably, the first recess in the handle is provided with a guide groove, and the outer surface of the cutter tube is provided with a guide rod, and when the slide rod drives the cutter tube to move axially, the guide rod on the cutter tube is rotated radially under the limiting of the guide groove.

[0012] Preferably, the guide rod is further provided with a jack rod, the guide rod and the jack rod are integrally connected, and the jack rod is used for being inserted into the guide groove.

[0013] Preferably, the connecting rod comprises a guide pipe made of hard material, the inside of the guide pipe is provided with a second isolation pipe, the outside of the guide pipe is provided with a first isolation pipe, the inside of the second isolation pipe is provided with an electrode wire, and the electrode wire is used for connecting the electrode head.

[0014] Preferably, one end of the cutter tube is provided with a tapered cutting part, and the cutting part is close to the electrode head.

[0015] Beneficial effects: the cutter tube is provided, the cutter tube is controlled by the handle to move along the axial direction and rotate, when the cutter tube contacts the electrode head, the surface of the electrode head is cleaned by repeatedly driving the cutter tube to move, and the operator can ablate the human tissue for a long time; the cleaning effect of the surface of the electrode head is improved by rotating the cutter tube, the electrode head is prevented from being adhered, and the energy output of the electrode head is avoided from being affected. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1This is a stereoscopic diagram of a plasma radiofrequency ablation electrode proposed in the present invention;

[0017] Figure 2 This is a front view of the plasma radiofrequency ablation electrode proposed by the present invention;

[0018] Figure 3 This is a left side view of the plasma radiofrequency ablation electrode proposed by the present invention;

[0019] Figure 4 for Figure 2 AA cross-sectional view;

[0020] Figure 5 for Figure 4 Enlarged view of point B;

[0021] Figure 6 for Figure 4 Enlarged view of point C.

[0022] Legend:

[0023] 1. Handle; 101. First groove; 102. First through hole; 11. Second groove; 111. Second through hole; 12. Grip; 13. First protrusion; 2. Slider; 21. Slide rod; 22. Bushing; 220. Third groove; 23. Cover; 3. Picking knife tube; 31. Bending portion; 32. Picking portion; 33. Guide groove; 4. Wire; 5. Electrode head; 51. Electrode wire; 61. Insulating tube; 62. Conduit; 7. Second protrusion; 8. Guide rod; 81. Push rod; 91. First isolation tube; 92. Second isolation tube. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. It is obvious that the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] In the description of the utility model, it is necessary to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as the limitation of the utility model, the term "first", "second", "third" is only used for the purpose of description, and cannot be understood as indicating or implying relative importance, in addition, unless otherwise explicitly specified and limited, the term "installation", "connection", "connection" should be understood in a broad sense, for example, it can be fixed connection, can also be detachable connection, or integrated connection, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside 2 elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0026] Referring to Figures 1-6 The utility model provides a kind of embodiment, a kind of radiofrequency ablation electrode, including for human body inside connecting rod and for installing connecting rod handle 1, the end of the connecting rod is provided with electrode head 5, by being provided with electrode head 5 in the end of connecting rod, make connecting rod have ablation function;The outer surface of the connecting rod is slidably connected with cutter tube 3, and one end of cutter tube 3 is placed into handle 1, wherein cutter tube 3 and handle 1 are slidably arranged, handle 1 can drive cutter tube 3 axial sliding, simultaneously, cutter tube 3 radially rotates;When cutter tube 3 is in initial position, cutter tube 3 is away from electrode head 5, so that electrode head 5 is placed outside cutter tube 3;When driving cutter tube 3 moves towards electrode head 5, cutter tube 3 removes the human tissue adhered to the outer surface thereof by covering and contacting electrode head 5.

[0027] The axial cross section of the electrode head 5 in the application is a right trapezoid, a rectangle, a square or a waist shape. When the axial cross section of the electrode head 5 is a right trapezoid, a rectangle or a square, the electrode head 5 is provided with a chamfer close to one end of the electrode head 5, which facilitates the sleeve connection of the electrode head 5 and the cutter tube 3 and the rotary removal of the human tissue adhered to the contact surface of the electrode head 5 and the cutter tube 3. The electrode head 5 is easy to be affected by the human tissue adhered to the surface thereof during the ablation of the human tissue, and needs to be repeatedly driven from the human body for cleaning or replacement. The cleaning of the electrode head 5 is easy to be polluted by other instruments. The technical scheme is provided with the cutter tube 3, and the cutter tube 3 is controlled by the handle 1 to move along the axial direction and rotate. When the cutter tube 3 contacts the electrode head 5, the cleaning of the outer surface of the electrode head 5 is realized by repeatedly driving the cutter tube 3 to move. The operator can directly clean and remove the adhered tissue in the human body, or can take out and directly remove the foreign matter on the surface of the electrode head 5, so as to prevent the pollution of the electrode head 5 by other instruments. The rotation of the cutter tube 3 significantly improves the cleaning effect of the surface of the electrode head 5. The connecting rod in the embodiment is fixed at a specified position by the handle 1.

[0028] As a further improved embodiment, the outer surface of the handle 1 in the long edge direction is provided with a second groove 11 close to the electrode head 5, that is, the second groove 11 is arranged at one end of the handle 1 and at the side end of the handle 1. The long edge direction of the second groove 11 and the axial direction of the cutter tube 3 are arranged in parallel to each other.

[0029] The groove bottom of the second groove 11 is provided with a second through hole 111 penetrating through one side of the handle 1. The second through hole 111 is provided with a sliding rod 21. The diameter of the sliding rod 21 is matched with the width of the second through hole 111, so that the sliding rod 21 can smoothly slide along the long edge of the second through hole 111. The opening of the second through hole 111 in the embodiment is a rectangle or a waist shape.

[0030] One end of the sliding rod 21 is provided with a sliding block 2. The sliding block 2 is arranged in the second groove 11. The sliding block 2 in the embodiment can be locked at the initial position by pressing the groove bottom of the second groove 11, or can be locked in the second groove 11 by arranging a buckle member, or can be locked in position by arranging end face ratchet teeth on the lower end surface of the sliding block 2 and the groove bottom of the second groove 11. The other end of the sliding rod 21 is provided with a shaft sleeve 22 movably arranged in the handle 1. The cutter tube 3 is arranged in the shaft sleeve 22. The inside of the shaft sleeve 22 is provided with a second protruding portion 7 for limiting the axial movement of the cutter tube 3. The second protruding portion 7 makes the cutter tube 3 rotate circumferentially in the shaft sleeve 22. The sliding rod 21 is reciprocally moved in the second through hole 111 by manually pushing the sliding block 2, and simultaneously drives the cutter tube 3 to axially move and radially rotate in the handle 1.

[0031] The second protruding part 7 has two connection modes in the application. One is that the second protruding part 7 and the shaft sleeve 22 are fixedly connected or integrally formed, and the die cutter tube 3 is provided with a recess for mounting the second protruding part 7. The slide rod 21 drives the die cutter tube 3 to move axially through the second protruding part 7. The die cutter tube 3 rotates radially under the limitation of the handle 1 while moving axially. The other is that the second protruding part 7 is fixed on the die cutter tube 3. The second protruding part 7 and the die cutter tube 3 are fixedly connected or integrally formed. The shaft sleeve 22 is further provided with a third groove 220 for placing the second protruding part 7. The slide rod 21 limits the axial movement of the second protruding part 7 through the third groove 220. The die cutter tube 3 rotates radially under the limitation of the handle 1 while moving axially under the drive of the second protruding part 7.

[0032] As a further improved embodiment, the second protruding part 7 is a bearing or an annular stopper, and the number of the second protruding part 7 is at least one. The number of the second protruding part 7 is increased to improve the rotation stability of the die cutter tube 3. The die cutter tube 3 placed in the handle 1 is filled with lubricant to facilitate the rotation of the die cutter tube 3. The die cutter tube 3 placed in the handle 1 can also be increased in diameter to facilitate the radial rotation of the die cutter tube 3 when moving axially in the handle 1.

[0033] As a further improved embodiment, the end of the shaft sleeve 22 is further provided with an annular cover 23. The second protruding part 7 is easily mounted or dismounted through the detachable cover 23, and the axial movement space of the second protruding part 7 is limited.

[0034] As a further improved embodiment, the handle 1 is in a columnar structure. The handle 1 is provided with a first through hole 102 at the end, and the first through hole 102 penetrates through both ends of the handle 1. The handle 1 is further provided with a first groove 101 for placing the shaft sleeve 22. The diameter of the first groove 101 is not less than the outer diameter of the shaft sleeve 22.

[0035] One end of the handle 1 is used for mounting the die cutter tube 3, and the other end is used for mounting the wire 4. The other end in the embodiment is not limited to the end of the handle 1. The wire 4 can also be arranged on the side close to the end of the handle 1. The wire 4 in the embodiment is used for fixedly connecting the connecting rod and connecting the electrode head 5.

[0036] As a further improved embodiment, the handle 1 is provided with a detachable guide rod 8 on the curved surface. One end of the guide rod 8 is a torque receiving part, and the other end is inserted into the wall of the die cutter tube 3. The end of the guide rod 8 abuts against the connecting rod, or the end of the guide rod 8 does not contact the connecting rod.

[0037] The curved surface of the cutter tube 3 inside the handle 1 is provided with a guide groove 33, wherein the guide groove 33 is used to install a guide rod 8, and when the slide rod 21 drives the cutter tube 3 to move axially, the guide rod 8 on the cutter tube 3 is limited by the guide groove 33 to make the cutter tube 3 rotate radially.

[0038] As another improved embodiment, the difference between this embodiment and the above embodiment is that the first groove 101 inside the handle 1 is provided with a guide groove 33, and the outer surface of the cutter tube 3 is provided with a guide rod 8, and when the slide rod 21 drives the cutter tube 3 to move axially, the guide rod 8 on the cutter tube 3 is limited by the guide groove 33 to make the cutter tube 3 rotate radially.

[0039] As a further improved embodiment, the guide rod 8 is further provided with a top rod 81, wherein the guide rod 8 and the top rod 81 are integrally connected, and the top rod 81 is used to be placed in the guide groove 33. The end of the top rod 81 is designed by rounding to improve the cooperation effect of the top rod 81 and the guide groove 33.

[0040] As a further improved embodiment, the connecting rod includes a hard material guide tube 62, the inside of the guide tube 62 is provided with a second isolation tube 92, and the outside of the guide tube 62 is provided with a first isolation tube 91, wherein the inside of the second isolation tube 92 is provided with an electrode wire 51, and the electrode wire 51 is used to connect the electrode head 5. In this embodiment, the second isolation tube 92 is arranged between the electrode wire 51 and the guide tube 62 to prevent the output of the electrode wire 51 from being disturbed, thereby ensuring the ablation effect of the electrode head 5, and preventing the phenomenon of electric shock damage to human tissue.

[0041] As a further improved embodiment, the second isolation tube 92 and the guide tube 62 are provided with an insulating tube 61, and the lengths of the second isolation tube 92, the guide tube 62, the insulating tube 61, the first isolation tube 91 and the electrode wire 51 are all greater than the length of the cutter tube 3. In this embodiment, the insulating tube 61 is arranged between the second isolation tube 92 and the guide tube 62 to further improve the anti-interference ability of the electrode wire 51 and avoid the phenomenon of electric shock, thereby significantly improving the safety of the connecting rod. In this embodiment, the electrode wire 51 and the lead wire 4 are fixedly arranged.

[0042] As a further improved embodiment, one end of the cutter tube 3 is provided with a tapered cutting portion 32, and the cutting portion 32 is arranged close to the electrode head 5. The end of the cutting portion 32 is prevented from sticking.

[0043] As a further improved embodiment, the cutter tube 3 is further provided with a bending portion 31, wherein the bending portion 31 is arranged close to the electrode head 5, and the bending portion 31 is used to facilitate real-time observation when the electrode head 5 is used to ablate tissue in the human body.

[0044] As a further improved embodiment, the end of the handle 1 is provided with a first protrusion 13, and the first protrusion 13 is arranged close to the electrode head 5; by arranging the first protrusion 13, the stability of the axial movement of the cutter tube 3 is improved. The curved surface of the handle 1 is further provided with a holding portion 12, wherein the holding portion 12 is arranged in a recessed manner.

[0045] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for those 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 within the scope of the present application.

Claims

1. A radiofrequency ablation electrode, comprising a connecting rod for placement inside the human body and a handle (1) for mounting the connecting rod, the end of the connecting rod being provided with an electrode tip (5), characterized in that: The outer surface of the connecting rod is slidably connected with a cutter tube (3), and one end of the cutter tube (3) is arranged in the handle (1), wherein the handle (1) can drive the cutter tube (3) to axially slide, and the cutter tube (3) is radially rotated; when the cutter tube (3) is in an initial position, the cutter tube (3) is away from the electrode head (5), so that the electrode head (5) is arranged outside the cutter tube (3); when the cutter tube (3) is driven to move towards the electrode head (5), the cutter tube (3) removes the human tissue adhered to the outer surface of the electrode head (5) by covering and contacting the electrode head (5).

2. The radiofrequency ablation electrode according to claim 1, characterized in that: The outer surface of the handle (1) is provided with a second groove (11) close to the electrode head (5) along the long edge direction, the groove bottom of the second groove (11) is provided with a second through hole (111) penetrating through one side of the handle (1), and a sliding rod (21) is arranged in the second through hole (111); one end of the sliding rod (21) is provided with a sliding block (2) arranged in the second groove (11); the other end of the sliding rod (21) is provided with a shaft sleeve (22) movably arranged in the handle (1); the cutter tube (3) is arranged in the shaft sleeve (22), and the inner portion of the shaft sleeve (22) is provided with a second protruding portion (7) for limiting the axial movement of the cutter tube (3), so that the cutter tube (3) is circumferentially rotated in the shaft sleeve (22) through the second protruding portion (7).

3. The radiofrequency ablation electrode according to claim 2, wherein: The second protruding portion (7) is a bearing or an annular stop block, and the number of the second protruding portion (7) is at least one.

4. The radiofrequency ablation electrode according to claim 2, wherein: The end portion of the shaft sleeve (22) is further provided with an annular cover body (23), so that the second protruding portion (7) is convenient to install or disassemble, and the axial movement space of the second protruding portion (7) is limited.

5. The radiofrequency ablation electrode according to claim 2, wherein: The handle (1) is in a columnar structure, the end portion of the handle (1) is provided with a first through hole (102) penetrating through both ends of the handle (1); the inner portion of the handle (1) is further provided with a first groove (101) for placing the shaft sleeve (22), and the diameter of the first groove (101) is not less than the outer diameter of the shaft sleeve (22); one end of the handle (1) is used for arranging the cutter tube (3), and the other end is used for arranging the lead wire (4).

6. The radiofrequency ablation electrode according to claim 5, wherein: The curved surface of the handle (1) is provided with a detachable guide rod (8), one end of the guide rod (8) is a torque receiving portion, and the other end is inserted into the pipe wall of the cutter tube (3); the curved surface of the cutter tube (3) arranged in the handle (1) is provided with a guide groove (33), wherein the guide groove (33) is used for arranging the guide rod (8), and when the sliding rod (21) drives the cutter tube (3) to axially move, the cutter tube (3) is radially rotated under the limiting cooperation of the guide groove (33) and the guide rod (8).

7. The radiofrequency ablation electrode according to claim 5, wherein: The first groove (101) in the handle (1) is provided with a guide groove (33), and the outer surface of the cutter tube (3) is provided with a guide rod (8), and when the sliding rod (21) drives the cutter tube (3) to axially move, the cutter tube (3) is radially rotated under the limiting of the guide rod (8) on the cutter tube (3) in the guide groove (33).

8. The radiofrequency ablation electrode according to claim 6 or 7, characterized in that: The guide rod (8) is further provided with a top rod (81), wherein the guide rod (8) and the top rod (81) are integrally connected, and the top rod (81) is used for being placed into the guide groove (33).

9. The radiofrequency ablation electrode according to claim 8, wherein: The connecting rod comprises a guide pipe (62) made of hard material, the inside of the guide pipe (62) is provided with a second isolation pipe (92), the outside of the guide pipe (62) is sleeved with a first isolation pipe (91), the inside of the second isolation pipe (92) is provided with an electrode wire (51), and the electrode wire (51) is used for connecting the electrode head (5).

10. The radiofrequency ablation electrode according to claim 1, wherein: One end of the ejector pipe (3) is provided with a tapered ejecting part (32), and the ejecting part (32) is arranged close to the electrode head (5).

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