Plasma electrode applied to hip arthroscopic surgery

Abstract

The utility model discloses a plasma electrode applied to hip joint arthroscopic surgery, belongs to the technical field of medical instruments, and aims to solve the technical problem that an electrode tip in the prior art is large in size and cannot enter a small-size arthroscope. The electrode comprises an electrode tip, an electrode stem and a handle which are sequentially connected, the electrode stem comprises an inert electrode and an outer insulating layer; the electrode tip comprises an insulator and an active electrode connected with the insulator; the insulator comprises an insulating head and an insulating pipeline; an inert electrode is sleeved outside the insulating pipeline; an outer insulating layer is sleeved outside the inert electrode; a cable connector and a liquid injection suction pipeline are further arranged at one end of the handle; and the cable connector and the liquid injection suction pipeline are connected with the electrode tip through the insulating pipeline. The plasma electrode applied to the hip joint arthroscopic surgery can be better applied to the hip joint arthroscopic surgery, and is high in safety, short in surgery time, small in trauma and short in postoperative recovery time.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and in particular to a plasma electrode used in hip arthroscopy surgery. Background Technology

[0002] Hip arthroscopy is a minimally invasive surgery that can treat intra-articular lesions and perform drilling decompression. It reduces the damage to joint blood supply and stability compared to any hip-preserving surgery, and plays a positive role in relieving pain, improving joint mobility, and delaying the time of joint replacement.

[0003] In recent years, low-temperature plasma surgical systems have been widely used in the treatment of orthopedics, spinal surgery, gynecology, anorectal diseases, etc., and the surgical temperature can be accurately controlled within the range of 40-70°C. It has the characteristics of high safety, short operation time, less trauma, and short postoperative recovery time. As an advanced treatment technology, plasma surgical electrodes are also used in hip arthroscopy.

[0004] Currently, for micro hip arthroscopy, it is expected that the wound caused by the surgery is smaller, which is conducive to the patient's later recovery and the aesthetics of the wound after healing. In view of this, a smaller diameter arthroscope (for example, 4mm) is used in hip arthroscopy. Therefore, a smaller plasma surgical electrode is required to smoothly enter the arthroscope for work.

[0005] The structure of a plasma electrode in the prior art can refer to the Chinese utility model patent with application number 202323019572.8, entitled "A safe and reliable radio frequency plasma surgical electrode". The electrode head is too large (greater than 5mm) and cannot enter the 4mm arthroscopy. Contents of utility model

[0006] The purpose of the utility model is to provide a plasma electrode for hip arthroscopy to solve the technical problem in the prior art that the electrode head is too large and cannot enter a small-sized arthroscopy.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] The utility model provides a plasma electrode for hip arthroscopy, comprising an electrode head, an electrode rod and a handle connected in sequence; the electrode rod comprises an outer insulating layer and an inert electrode;

[0009] The electrode head includes an insulator and an active electrode connected to the insulator; the insulator includes an insulating head and an insulating pipeline; the insulating pipeline is provided with the inert electrode on the outside; the inert electrode is provided with the outer insulating layer on the outside;

[0010] One end of the handle is also provided with a cable connector and a liquid injection and suction pipeline; the cable connector and the liquid injection and suction pipeline are connected to the electrode head through the insulating pipeline.

[0011] Optionally or preferably, the active electrode includes an electrode plate and an active electrode rod;

[0012] On one side end face of the electrode plate, a plurality of electrode bumps are uniformly arranged along the circumferential direction; an attraction hole is arranged at the center of the plurality of electrode bumps;

[0013] On the other side end face of the electrode plate, a plurality of electrode clamping blocks are arranged; the active electrode is clamped and connected to the insulating head through the plurality of electrode clamping blocks.

[0014] Optionally or preferably, the inside of the insulating head is arranged in an inverted L-shaped hollow, including a spherical part and a cylindrical part;

[0015] One end of the cylindrical part far from the spherical part is connected to the insulating pipeline;

[0016] A cutting part is formed on the spherical part, and the active electrode rod is connected to the insulating pipeline through the cutting part.

[0017] Optionally or preferably, the insulating pipeline includes a circuit connection pipeline and a suction pipeline;

[0018] An active electrode wire is arranged in the circuit connection pipeline, and the active electrode rod is connected to one end of the active electrode wire through the circuit connection pipeline; the other end of the active electrode wire is connected to a cable connection joint;

[0019] The end of the suction pipeline is communicated with a PEEK pipe, and the suction hole is communicated with the liquid injection and suction pipeline through the suction pipeline and the PEEK pipe.

[0020] Optionally or preferably, the inert electrode is a steel pipe, and the end of the inert electrode is connected to a wire.

[0021] Optionally or preferably, an exposed part is formed on one side of the outer insulating layer close to the active electrode; the exposed part is used to expose the inert electrode on one side close to the active electrode.

[0022] Optionally or preferably, the maximum radial dimension of the electrode head is φ, φ≤3.75mm.

[0023] Based on the above technical solutions, the utility model can at least produce the following technical effects:

[0024] The present utility model provides a plasma electrode applied to arthroscopic hip surgery. By improving the insulator structure and cooperating with the improvement of the structure of the active electrode and the distribution area of the inert electrode, while reducing the size of the electrode head to 3.75 mm, it can also ensure good insulation between the active electrode and the inert electrode and ensure that the electrode can withstand sufficient energy output, guaranteeing good cutting effect and safety in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 FIG. is a schematic diagram of the overall structure of the plasma electrode applied to arthroscopic hip surgery of the present utility model;

[0026] Figure 2 FIG. is a schematic diagram of the partial structure of the electrode head in the plasma electrode applied to arthroscopic hip surgery of the present utility model;

[0027] Figure 3 FIG. is a schematic diagram of the partial structure of the electrode head (omitting the electrode rod) in the plasma electrode applied to arthroscopic hip surgery of the present utility model;

[0028] Figure 4 FIG. is a schematic diagram of the structure of the active electrode in the plasma electrode applied to arthroscopic hip surgery of the present utility model Figure 1 ;

[0029] Figure 5 FIG. is a schematic diagram of the structure of the active electrode in the plasma electrode applied to arthroscopic hip surgery of the present utility model Figure 2 ;

[0030] Figure 6 FIG. is a schematic diagram of the structure of the insulator in the plasma electrode applied to arthroscopic hip surgery of the present utility model;

[0031] Figure 7 FIG. is a schematic diagram of the structure of the insulating head in the plasma electrode applied to arthroscopic hip surgery of the present utility model;

[0032] Figure 8 FIG. is a schematic diagram of the structure of the insulating pipeline in the plasma electrode applied to arthroscopic hip surgery of the present utility model.

[0033] In the figures: 1. Electrode head; 11. Active electrode; 111. Electrode plate; 1111. Electrode bump; 1112. Suction hole; 1113. Electrode clamping block; 112. Active electrode rod; 12. Insulator; 121. Insulating head; 1211. Spherical part; 1212. Cylindrical part; 122. Insulating pipeline; 1221. Circuit connection pipeline; 1222. Suction pipeline; 13. Inert electrode; 14. Outer insulating layer; 2. Electrode rod; 3. Handle; 31. PEEK tube; 4. Cable connector; 41. Active electrode wire; 5. Liquid injection and suction pipeline. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the protection scope of the present utility model.

[0035] Embodiment

[0036] Please refer to Figures 1 to 8 , a plasma electrode applied to arthroscopic hip surgery, which includes an electrode head 1, an electrode rod 2 and a handle 3 connected in sequence; a cable connector 4 and a liquid injection and aspiration pipeline 5 are respectively arranged at the end of the handle 3. In actual work, the cable connector 4 is connected to the main unit, and normal saline is injected into the electrode head 1 through the liquid injection and aspiration pipeline 5. The energy output is started (by stepping on the foot pedal or the energy excitation button on the handle 3), and uniform plasma is generated at the electrode head 1 for cutting human tissues.

[0037] Please refer to Figures 2 to 3 , the electrode head 1 includes an insulator 12 and an active electrode 11 that is snap-fitted to the insulator 12; the insulator 12 includes an insulating head 121 and an insulating pipeline 122, and the electrode rod 2 is sleeved outside the insulating pipeline 122; in this embodiment, the electrode rod 2 includes an inert electrode 13 and an outer insulating layer 14. Specifically, the inert electrode 13 is sleeved outside the insulating pipeline 122, and the insulating layer 14 is sleeved outside the inert electrode 13.

[0038] In this embodiment, the outer insulating layer 14 covers most of the area outside the inert electrode 13 and forms an exposed part on the side close to the active electrode 11, so that the inert electrode 13 is only exposed in the area near the active electrode 11. The inert electrode 13 is a steel pipe, which is joined to the outer surface end of the insulating head 121, and the end of the inert electrode 13 is connected to a wire.

[0039] Please refer to Figures 4 to 5 , in this embodiment, the above-mentioned active electrode 11 includes an electrode piece 111 and an active electrode rod 112; a plurality of electrode bumps 1111 are uniformly arranged along the circumference on one side surface of the electrode piece 111, and a suction hole 1112 is arranged at the center of the plurality of electrode bumps 1111, and the suction hole 1112 is communicated with the above-mentioned liquid injection and aspiration pipeline 5; a plurality of electrode blocks 1113 are arranged on the other end surface of the electrode piece 111, and the active electrode 11 is snap-fitted to the insulating head 121 through the plurality of electrode blocks 1113.

[0040] Please refer to Figures 6 to 7, in this embodiment, the inside of the insulating head 121 is provided with an inverted L-shaped hollow, including a spherical part 1211 and a cylindrical part 1212, and the spherical part 1211 and the cylindrical part 1212 are integrally formed; wherein the inside of the insulating head 121 is provided with an inverted L-shaped hollow, and a cutting part is formed on the spherical part 1211, and the cutting part is to flatten the top of the spherical part 1211 and expose the internal hollow part; therefore, the active electrode rod 112 can extend into the exposed hollow part and be clamped with the insulating pipeline 122.

[0041] Figure 7 The direction of the arrow in the figure is the extending direction of the active electrode rod 112.

[0042] Please refer to Figure 3 and Figure 8 , in this embodiment, the insulating pipeline 122 includes a circuit connection pipeline 1221 and a suction pipeline 1222; wherein an active electrode wire 41 is arranged in the circuit connection pipeline 1221, the active electrode rod 112 is connected to one end of the active electrode wire 41 through the circuit connection pipeline 1221, and the other end of the active electrode wire 41 is connected to a cable connection joint 4.

[0043] The end of the suction pipeline 1222 is communicated with a PEEK tube 31, and the suction hole 1112 is communicated with the liquid injection and suction pipeline 5 through the suction pipeline 1222 and the PEEK tube.

[0044] In this embodiment, between each component (such as between the active electrode 11 and the insulating head 121, between the PEEK tube 31 and the suction pipeline 1222, etc.), it is further fixed by gluing to ensure the reliability of the connection.

[0045] During the operation, the plasma is concentratedly generated at the active electrode 11 and is used to perform the task of cutting tissues. The bubbles generated during the cutting process can be sucked away through the suction hole 1112 and the suction pipeline 1222, so as to ensure the clarity of the vision at the cutting position.

[0046] In order to ensure that the electrode head 1 can smoothly extend into the 4-mm arthroscope, in this embodiment, the maximum radial dimension of the electrode head 1 is φ, and φ ≤ 3.75 mm; that is, the maximum dimension of the entire electrode head 1 is controlled within 3.75 mm, so as to smoothly enter the 4-mm arthroscope.

[0047] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plasma electrode for hip arthroscopy, characterized in that: It comprises an electrode head (1), an electrode rod (2) and a handle (3) which are connected in sequence; the electrode rod (2) comprises an inert electrode (13) and an outer insulating layer (14); The electrode head (1) comprises an insulator (12) and an active electrode (11) connected to the insulator (12); the insulator (12) comprises an insulating head (121) and an insulating pipeline (122); the insulating pipeline (122) is sheathed with the inert electrode (13); the inert electrode (13) is sheathed with the outer insulating layer (14); One end of the handle (3) is also provided with a cable connector (4) and a liquid injection suction pipeline (5); the cable connector (4) and the liquid injection suction pipeline (5) are connected to the electrode head (1) via the insulating pipeline (122).

2. The plasma electrode for hip arthroscopy according to claim 1, characterized in that: The active electrode (11) comprises an electrode sheet (111) and an active electrode rod (112); A plurality of electrode protrusions (1111) are evenly arranged along the circumferential direction on one end surface of the electrode sheet (111); and a suction hole (1112) is arranged at the center of the plurality of electrode protrusions (1111); A plurality of electrode clamping blocks (1113) are arranged on the other end surface of the electrode sheet (111); the active electrode (11) is clamped and connected to the insulating head (121) via the plurality of electrode clamping blocks (1113).

3. The plasma electrode for hip arthroscopy according to claim 2, characterized in that: The interior of the insulating head (121) is hollow and in an inverted L shape, and comprises a spherical portion (1211) and a cylindrical portion (1212); One end of the cylindrical portion (1212) away from the spherical portion (1211) is connected to the insulating pipeline (122); A cutting portion is formed on the spherical portion (1211), and the active electrode rod (112) is connected to the insulating pipeline (122) via the cutting portion.

4. The plasma electrode for hip arthroscopy according to claim 3, characterized in that: The insulating pipeline (122) includes a circuit connection pipeline (1221) and a suction pipeline (1222); An active electrode wire (41) is arranged in the circuit connection pipeline (1221); the active electrode rod (112) is connected to one end of the active electrode wire (41) through the circuit connection pipeline (1221); the other end of the active electrode wire (41) is connected to a cable connection connector (4); The end of the suction pipeline (1222) is connected to a PEEK tube (31), and the suction hole (1112) is connected to the liquid injection suction pipeline (5) through the suction pipeline (1222) and the PEEK tube (31).

5. The plasma electrode for hip arthroscopy according to claim 1, characterized in that: The inert electrode (13) is a steel pipe, and the end of the inert electrode (13) is connected to a wire.

6. The plasma electrode for hip arthroscopy according to claim 1, characterized in that: A bare portion is formed on a side of the outer insulating layer (14) close to the active electrode (11); the bare portion is used to expose the inert electrode (13) on a side close to the active electrode (11).

7. The plasma electrode for hip arthroscopy according to claim 1, characterized in that: The maximum radial dimension of the electrode head (1) is φ, φ≤3.75 mm.

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