Plasma ablation electrodes

Abstract

The utility model discloses a plasma ablation surgical electrode, comprising a first catheter, a hard conductive tube, an insulating member and an emitter. A first cavity and a second cavity extending axially and separated from each other are provided inside the first catheter. The hard conductive tube is coaxially arranged at one end of the first catheter. The insulating member is coaxially arranged at one end of the hard conductive tube away from the first catheter. The emitter comprises an emitter head and an electrode wire, wherein the emitter head is arranged at one end of the insulating member away from the hard conductive tube, and the electrode wire is arranged in the first cavity and one end is led out from the first cavity and connected to the emitter head. Among them, the second cavity is closed at one end close to the hard conductive tube, and the first catheter is provided with a circumferentially penetrating water injection port at one end close to the hard conductive tube, and the water injection port is connected to the second cavity. The plasma ablation surgical electrode in the embodiment of the utility model injects physiological saline into the human tissue around the emitter head and the hard conductive tube through the second cavity of the first catheter, thereby improving the stability of the plasma ablation surgical electrode.

Description

Technical Field

[0001] The utility model belongs to the technical field of surgical instruments, and in particular relates to a plasma ablation surgical electrode. Background Art

[0002] The basic principle of plasma ablation is low-temperature ablation, which uses the energy of low-temperature plasma radio frequency to generate strong plasma. The high-speed plasma ions break the peptide bonds in the soft tissue and use lower temperatures to vaporize and ablate the tissue to achieve the effect of eradicating lesions, alleviating symptoms and treating diseases.

[0003] The existing plasma ablation device sets a conductor device around the emitter head of the emitter, the emitter head is connected to any one of the positive and negative poles of the host circuit, and the conductor device is connected to the other corresponding pole of the host circuit, and the electrical connection between the emitter head and the conductor device is realized by human tissue. However, this method often causes the physiological saline between the emitter head and the conductor device to dry up due to power on, and plasma cannot be generated and human tissue cannot be ablated, resulting in delays in surgery. In addition, the angle of the emitter head of the existing plasma ablation device is fixed and cannot be adjusted, which limits the application range of the plasma ablation device.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The utility model aims to provide a plasma ablation surgery electrode, which can inject physiological saline into the human tissue around the emission head and the hard conductive tube through the second cavity of the first catheter, thereby improving the stability of the plasma ablation surgery electrode.

[0006] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides a plasma ablation surgical electrode, including a first catheter, a hard conductive tube, an insulating member and an emitter. The first catheter is provided with a first cavity and a second cavity extending axially and separated from each other. The hard conductive tube is coaxially arranged at one end of the first catheter. The insulating member is coaxially arranged at an end of the hard conductive tube away from the first catheter. The emitter includes a transmitter head and an electrode wire, the transmitter head is arranged at an end of the insulating member away from the hard conductive tube, and the electrode wire is arranged in the first cavity and one end is led out from the first cavity and connected to the transmitter head. Among them, the second cavity is closed at one end close to the hard conductive tube, and the first catheter is provided with a circumferentially penetrating water injection port at one end close to the hard conductive tube, and the water injection port is connected to the second cavity.

[0007] In one or more embodiments of the utility model, the plasma ablation surgical electrode also includes a handle and a water injection tube. A cavity is provided inside the handle. The end of the first catheter away from the transmitting head extends into the handle. The end of the second cavity away from the transmitting head is closed. One end of the water injection tube is located in the handle and connected to the second cavity, and the other end is led out from the handle.

[0008] In one or more embodiments of the utility model, the water injection pipe includes a thin pipe section and a thick pipe section, one end of the thin pipe section is connected to the thick pipe section, and the other end is connected to the second cavity, and a flow controller is provided on the thick pipe section.

[0009] In one or more embodiments of the present invention, a water injection joint is provided at the end of the water injection pipe away from the first conduit.

[0010] In one or more embodiments of the present invention, the first catheter is a soft tube, and the plasma ablation surgical electrode also includes a first traction wire and a second traction wire. The first traction wire is arranged in the first cavity and one end is connected to the hard conductive tube. The second traction wire is arranged in the second cavity and one end is connected to the hard conductive tube.

[0011] In one or more embodiments of the present invention, the first traction wire and the second traction wire are made of a conductive material, and the plasma ablation surgical electrode further includes a first insulating layer, and the first insulating layer is sleeved on the second traction wire.

[0012] In one or more embodiments of the present invention, the plasma ablation surgical electrode further includes a second insulating layer sleeved on the electrode wire.

[0013] In one or more embodiments of the utility model, the plasma ablation surgical electrode further includes a second catheter sleeved on the first catheter, the second catheter is a hard tube, and one end of the first catheter close to the transmitting head is led out from the second catheter.

[0014] In one or more embodiments of the present invention, the plasma ablation surgical electrode further includes an insulating tube sleeved on the second catheter, and one end of the second catheter close to the emission head is led out from the insulating tube.

[0015] In one or more embodiments of the present invention, the plasma ablation surgical electrode also includes a rotating wheel, and the first traction wire and the second traction wire are connected to the rotating wheel at one end away from the transmitting head. In the axial perspective of the rotating wheel, the first traction wire and the second traction wire are connected to different parts of the rotating wheel.

[0016] Compared with the prior art, the plasma ablation surgical electrode of the utility model can inject physiological saline into the human tissue around the transmitting head and the hard conductive tube through the second cavity of the first catheter, thereby improving the conductivity of the surrounding human tissue, ensuring the stability of the electrical connection between the transmitting head, human tissue and the hard conductive tube, and improving the stability of the plasma ablation surgical electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only some implementations recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a three-dimensional structural diagram of a plasma ablation surgical electrode in one embodiment of the utility model;

[0019] Figure 2 This is a diagram of the internal structure of the handle in one embodiment of the utility model;

[0020] Figure 3 This is a partial structural diagram of the interior of the handle in one embodiment of the utility model;

[0021] Figure 4 for Figure 3 A partial enlarged view of part A;

[0022] Figure 5 It is a cross-sectional structural diagram of the first conduit and the water injection pipe in one embodiment of the utility model;

[0023] Figure 6 It is a cross-sectional structural diagram of the first conduit, the second conduit and the hard conductive tube in one embodiment of the utility model.

[0024] Explanation of main figure marks: 1. first conduit, 101. first cavity, 102. second cavity, 103. water injection port, 2. hard conductive tube, 3. insulating part, 4. emitter, 401. emitter head, 402. electrode wire, 5. handle, 6. water injection pipe, 601. thin tube section, 602. thick tube section, 7. flow controller, 8. water injection joint, 9. first traction wire, 10. second traction wire, 11. first insulating layer, 12. second insulating layer, 13. second conduit, 14. insulating tube, 15. rotor, 16. connecting wire, 17. first output cable, 18. second output cable. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the implementation of the present invention will be clearly and completely described below in conjunction with the drawings in the implementation of the present invention. Obviously, the described implementation is only a part of the implementation of the present invention, not all of the implementations. Based on the implementation of the present invention, all other implementations obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0026] like Figures 1 to 6 As shown, a plasma ablation surgical electrode in one embodiment of the utility model comprises a first catheter 1, a hard conductive tube 2, an insulating member 3 and an emitter 4. A first cavity 101 and a second cavity 102 extending axially and separated from each other are provided inside the first catheter 1. The hard conductive tube 2 is coaxially arranged at one end of the first catheter 1. The insulating member 3 is coaxially arranged at one end of the hard conductive tube 2 away from the first catheter 1. The emitter 4 comprises a transmitter head 401 and an electrode wire 402, wherein the transmitter head 401 is arranged at one end of the insulating member 3 away from the hard conductive tube 2, the electrode wire 402 is arranged in the first cavity 101 and one end is led out from the first cavity 101, the end of the electrode wire 402 passes through the hard conductive tube 2 and the insulating member 3 in sequence and is connected to the transmitter head 401, and the other end of the electrode wire 402 is connected to an external host, which is used to provide radio frequency current to the emitter 4, so that the transmitter head 401 of the emitter 4 generates radio frequency energy to cut the human tissue around the transmitter head 401. One end of the second cavity 102 close to the hard conductive tube 2 is closed, and one end of the first conduit 1 close to the hard conductive tube 2 is provided with a circumferentially penetrating water inlet 103 , which is communicated with the second cavity 102 .

[0027] According to the above structural design, during the operation, physiological saline can be injected into the second cavity 102 of the first catheter 1. The physiological saline flows out of the second cavity 102 through the water injection port 103 and diffuses into the surrounding human tissue, thereby improving the conductivity of the surrounding human tissue and ensuring the stability of the electrical connection between the transmitter 401, the human tissue and the hard conductive tube 2. This allows the transmitter 401 to always maintain a stable working state during the operation, reducing the probability of it failing to conduct with the hard conductive tube 2.

[0028] In one embodiment, the first conduit 1 is provided with an axially extending partition, which divides the internal space of the first conduit 1 into a first cavity 101 and a second cavity 102 that are not connected to each other. In other embodiments, the first cavity 101 and the second cavity 102 may be formed in other ways, for example, the first conduit 1 may be formed by splicing two pipes, and the internal spaces of the two pipes respectively form the first cavity 101 and the second cavity 102 of the first conduit 1.

[0029] In order to facilitate the injection of physiological saline into the second cavity 102, Figures 1 to 3 As shown, the plasma ablation surgical electrode in this embodiment is also provided with a handle 5 and a water injection tube 6. A cavity is provided inside the handle 5. The end of the first catheter 1 away from the transmitting head 401 extends into the handle 5. The handle 5 is used to fix the position of the first catheter 1, and the end of the second cavity 102 away from the transmitting head 401 is closed. One end of the water injection tube 6 is located in the handle 5 and is connected to the first catheter 1, and is connected to the second cavity 102, and the other end is led out from the handle 5.

[0030] Furthermore, considering that the first conduit 1 is relatively thin in actual application, the water injection pipe 6 also needs to use a small-sized pipe to match the first conduit 1. The thin pipe is not conducive to connection with a conventional flow controller 7, and a relatively high water pressure is required for water injection.

[0031] To solve the above problems, Figure 2 and Figure 3 As shown, the water injection pipe 6 is constructed into a thin pipe section 601 and a thick pipe section 602 . One end of the thin pipe section 601 is connected to the thick pipe section 602 , and the other end is connected to the second cavity 102 . A flow controller 7 is installed on the thick pipe section 602 .

[0032] The thin tube section 601 and the thick tube section 602 can be integrally formed by injection molding or the like, or can be formed by splicing two tubes with different diameters.

[0033] like Figure 2 As shown, a water injection connector 8 is provided at the end of the water injection pipe 6 away from the first catheter 1, and the water injection connector 8 is used to connect to an infusion system or the like.

[0034] In one embodiment, in order to adjust the angle of the transmitter 401, the first catheter 1 is a soft tube, such as a plastic tube, and a first traction wire 9 and a second traction wire 10 are arranged in the first catheter 1. Specifically, the first traction wire 9 is arranged in the first cavity 101 and one end is connected to the hard conductive tube 2, and the second traction wire 10 is arranged in the second cavity 102 and one end is connected to the hard conductive tube 2.

[0035] According to the above structural design, by pulling the first traction wire 9 or the second traction wire 10 from the end away from the transmitting head 401, one side of the transmitting head 401 is bent by the force, and the position of the transmitting head 401 is changed, thereby realizing flexible adjustment of the angle of the transmitting head 401.

[0036] Furthermore, in order to save the internal space of the first catheter 1 and reduce unnecessary devices inside the first catheter 1, the first traction wire 9 and the second traction wire 10 can be used as devices to electrically connect the hard conductive tube 2 to the external host. Specifically, the first traction wire 9 and the second traction wire 10 are made of a conductive material, such as a steel wire. In addition, a first insulating layer 11 made of an insulating material is sleeved on the second traction wire 10 to isolate the second traction wire 10 from the saline in the second cavity 102 to prevent a short circuit.

[0037] In other embodiments, the device may be connected to an external host only through the first traction wire 9 or the second traction wire 10. When the device is connected to an external host only through the first traction wire 9, the second traction wire 10 may be made of a non-conductive material, and the first insulating layer 11 does not need to be provided on its surface.

[0038] When the first traction wire 9 is made of a conductive material, since the first traction wire 9 and the electrode wire 402 are disposed together in the first cavity 101, in order to prevent the two from short-circuiting after contact, in one embodiment, Figure 6 As shown, a second insulating layer 12 made of insulating material is sleeved on the electrode wire 402.

[0039] In one embodiment, on the basis of ensuring that the soft first catheter 1 can be bent together with the transmitting head 401, in order to enable the transmitting head 401 to smoothly enter the designated part of the human body, a hard second catheter 13 is sleeved on the first catheter 1, and one end of the first catheter 1 close to the transmitting head 401 is led out from the second catheter 13 to bend together with the transmitting head 401.

[0040] Furthermore, the plasma ablation surgery electrode also includes an insulating tube 14 sleeved on the second catheter 13, and one end of the second catheter 13 close to the transmitter 401 is led out from the insulating tube 14. The insulating tube 14 is made of insulating material to improve the insulation of the plasma ablation surgery electrode to avoid short circuits, accidental electric shocks, etc. during surgery.

[0041] In one embodiment, the plasma ablation surgical electrode further includes a rotating wheel 15, and the ends of the first traction wire 9 and the second traction wire 10 away from the transmitting head 401 are connected to the rotating wheel 15, and in the axial view of the rotating wheel 15, the first traction wire 9 and the second traction wire 10 are connected to different parts of the rotating wheel 15. To ensure the insulation of the plasma ablation surgical electrode, the rotating wheel 15 can be installed in the handle 5. In other cases, for example, the first traction wire 9 and the second traction wire 10 are insulated, and the rotating wheel 15 can also be installed outside the handle 5.

[0042] like Figure 3As shown, in order to conduct the first traction wire 9 with the second traction wire 10, in one embodiment, the plasma ablation surgery electrode further includes a connecting wire 16, and the two ends of the connecting wire 16 are respectively connected to one end of the first traction wire 9 away from the transmitter 401 and one end of the second traction wire 10 away from the transmitter 401. At the same time, a first output cable 17 is also provided, one end of the first output cable 17 extends into the handle 5 and is connected to any one of the first traction wire 9, the second traction wire 10 and the connecting wire 16, and the other end is led out of the handle 5 to be connected to an external host.

[0043] Furthermore, a second output cable 18 is provided to connect the electrode wire 402 to an external host. One end of the second output cable 18 extends into the handle 5 to be connected to the electrode wire 402 , and the other end is led out of the handle 5 to be connected to the external host.

[0044] It should be noted that the use of the plasma ablation surgical electrode in the embodiment of the utility model is not limited to minimally invasive surgery for intervertebral disc herniation, but can also be applied to other radiofrequency ablation surgeries.

[0045] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0046] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A plasma ablation surgical electrode, characterized in that: include: A first conduit (1) having a first cavity (101) and a second cavity (102) extending axially and separated from each other; A hard conductive tube (2) coaxially arranged at one end of the first conduit (1); an insulating member (3) coaxially disposed on an end of the hard conductive tube (2) away from the first conduit (1); and An emitter (4), comprising an emitter head (401) and an electrode wire (402), wherein the emitter head (401) is arranged at one end of the insulating member (3) away from the hard conductive tube (2), and the electrode wire (402) is arranged in the first cavity (101) and one end of the electrode wire (402) is led out from the first cavity (101) and connected to the emitter head (401); The second cavity (102) is closed at one end close to the hard conductive tube (2), and the first conduit (1) is provided with a circumferentially penetrating water injection port (103) at one end close to the hard conductive tube (2), and the water injection port (103) is connected to the second cavity (102).

2. The plasma ablation surgical electrode according to claim 1, characterized in that: The plasma ablation surgical electrode further comprises a handle (5) and a water injection tube (6); a cavity is provided inside the handle (5); one end of the first catheter (1) away from the transmitting head (401) extends into the handle (5); one end of the second cavity (102) away from the transmitting head (401) is closed; one end of the water injection tube (6) is located in the handle (5) and is connected to the second cavity (102); and the other end is led out from the handle (5).

3. The plasma ablation surgical electrode according to claim 2, characterized in that: The water injection pipe (6) comprises a thin pipe section (601) and a thick pipe section (602); one end of the thin pipe section (601) is connected to the thick pipe section (602), and the other end is communicated with the second cavity (102); a flow controller (7) is provided on the thick pipe section (602).

4. The plasma ablation surgical electrode according to claim 2, characterized in that: The end of the water injection pipe (6) away from the first conduit (1) is provided with a water injection joint (8).

5. The plasma ablation surgical electrode according to claim 1, characterized in that: The first catheter (1) is a soft tube, and the plasma ablation surgical electrode also includes a first traction wire (9) and a second traction wire (10), the first traction wire (9) is arranged in the first cavity (101) and one end of which is connected to the hard conductive tube (2), and the second traction wire (10) is arranged in the second cavity (102) and one end of which is connected to the hard conductive tube (2).

6. The plasma ablation surgical electrode according to claim 5, characterized in that: The first traction wire (9) and the second traction wire (10) are made of conductive materials, and the plasma ablation surgical electrode further comprises a first insulating layer (11), and the first insulating layer (11) is sleeved on the second traction wire (10).

7. The plasma ablation surgical electrode according to claim 6, characterized in that: The plasma ablation surgical electrode further comprises a second insulating layer (12) sleeved on the electrode wire (402).

8. The plasma ablation surgical electrode according to claim 5, characterized in that: The plasma ablation surgical electrode further comprises a second catheter (13) sleeved on the first catheter (1); the second catheter (13) is a hard tube; an end of the first catheter (1) close to the transmitting head (401) is led out from the second catheter (13).

9. The plasma ablation surgical electrode according to claim 8, characterized in that: The plasma ablation surgical electrode further comprises an insulating tube (14) sleeved on the second catheter (13), and one end of the second catheter (13) close to the transmitting head (401) is led out from the insulating tube (14).

10. The plasma ablation surgical electrode according to claim 5, characterized in that: The plasma ablation surgical electrode also includes a rotating wheel (15), and the first traction wire (9) and the second traction wire (10) are connected to the rotating wheel (15) at one end away from the transmitting head (401), and in the axial perspective of the rotating wheel (15), the first traction wire (9) and the second traction wire (10) are connected to different parts of the rotating wheel (15).

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