A plasma electrode with injection function

Abstract

The present invention discloses a plasma electrode with an injection function, comprising an injection part and an electrode part, wherein the electrode part comprises a positive electrode wire wound around one end of an electrode needle, an insulating head fixedly connected to one end of the electrode needle, and an outer pipe fixedly connected to one end of the insulating head away from the electrode needle, wherein an electrode negative wire is fixedly connected to one end of the outer pipe away from the electrode needle. The present invention injects physiological saline into the target tissue through the cooperation between the injection part and the electrode part, and when the target tissue bulges, the positive electrode wire and the electrode needle are connected to form a positive pole of the circuit, and the electrode negative wire and the outer pipe are connected to form a negative pole of the circuit, and the positive electrode wire is energized to excite the physiological saline of 50um around the electrode needle into plasma, and the plasma realizes the cutting of the target tissue, thereby facilitating the clean cutting of the target tissue, improving the surgical efficiency, shortening the surgical time, reducing the surgical cost, meeting the requirements of refined surgery, improving the surgical accuracy and reducing the surgical risk, and saving injection needles and instruments.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a plasma electrode with an injection function. Background Art

[0002] The clinical manifestations of bladder cancer are mainly painless macroscopic hematuria. When the lesion involves the bladder triangle, bladder irritation signs appear, namely frequent urination, urgency, and pain during urination. Radical resection is the first choice for the treatment of early bladder cancer. Systemic chemotherapy is the main treatment for patients with advanced or intolerant surgical treatment. The prognosis of patients with advanced muscle-invasive type is poor. Therefore, early diagnosis and improving the radical resection rate of patients are particularly important for bladder cancer patients.

[0003] The existing treatment method is to inject saline through an injection needle under endoscopy to pad the bladder tumor, then remove the injection needle, and then use electrodes to remove the raised tumor. However, the current electrodes are generally large in size and shape, and the required inner diameter is also large, and it is easy to cut into non-target areas, which is easy to incompletely remove the tumor and cut through the bladder, and cannot meet the requirements of refined surgery; on the other hand, after the tumor is padded by the injection needle, it takes a certain amount of time to pull out the injection needle and send the cutting electrode into the human body. During this time, due to the absorption of the injection solution by the human body, the effect of tumor padding is poor, and it may be necessary to repeat the injection operation, which increases the risk of surgery and prolongs the operation time. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a plasma electrode with injection function, which can stimulate physiological saline into plasma and cut tissue through the cooperation between the injection part and the electrode part.

[0005] In order to achieve the above object, the present invention is achieved through the following technical solutions:

[0006] A plasma electrode with injection function, composed of an injection part, a holding component, a Luer connector and a connecting plug component, including:

[0007] The injection part includes an electrode needle used to excite saline into plasma and inject saline, and an injection tube fixed to the end of the electrode needle. The other end of the injection tube is connected to the Luer connector to form an injection cavity.

[0008] The electrode part includes a positive electrode wire wound around one end of the electrode needle, an insulating head fixedly connected to one end of the electrode needle, and an outer tube fixedly connected to the end of the insulating head away from the electrode needle. A cavity is arranged inside the insulating head, and the diameter of the cavity close to the end of the electrode needle is larger than the diameter of the end away from the electrode needle. A first negative insulating layer is arranged on the outer tube, and a positive insulating layer is arranged at a position close to the positive electrode wire inside the outer tube. A negative electrode wire is fixedly connected to the end of the outer tube away from the electrode needle. The negative electrode wire and the outer tube are connected to form a negative pole of the circuit. A second negative insulating layer is arranged at the contact portion between the negative electrode wire and the outer tube. The positive electrode wire and the electrode needle are connected to form a positive pole of the circuit. When the positive electrode wire is energized, the physiological saline 50um around the electrode needle is excited into plasma to cut the tissue.

[0009] The holding assembly is arranged at the other end of the injection part, and is used for fixing the negative electrode wire and for holding the plasma electrode.

[0010] More preferably, the injection tube is provided with size scale markings.

[0011] More preferably, the positive electrode wire is wound around the electrode needle near the injection tube.

[0012] More preferably, the portion of the positive electrode wire not covered with the positive electrode insulation layer is entirely within the inner cavity of the insulation head.

[0013] Further preferably, the holding assembly is composed of a first clamping portion, a clamping portion and a second clamping portion, and the first clamping portion is clamped in the clamping portion.

[0014] More preferably, the second clamping portion includes:

[0015] The first tube cavity is arranged along the length direction at an end away from the first clamping portion and the clamping portion.

[0016] The second tube cavity is arranged inside the first clamping part and the clamping part along the length direction.

[0017] The clamping parts are respectively arranged inside the first clamping part and the clamping part at positions close to the first tube cavity.

[0018] The handle lumen is vertically arranged at a position between the first clamping portion and the clamping portion close to the second lumen.

[0019] The third lumen is arranged at a position where the first clamping portion and the clamping portion are far away from the first lumen.

[0020] More preferably, one end of the outer tube is clamped in the first tube cavity.

[0021] Compared with the prior art, the present invention has the following advantages: by setting up a holding component, it is easy to operate during surgery, and through the cooperation between the injection part and the electrode part, physiological saline is injected into the target tissue. When the target tissue bulges, the positive electrode wire and the electrode needle are connected to form the positive pole of the circuit, and the negative electrode wire and the external pipe are connected to form the negative pole of the circuit. The positive electrode wire is energized to excite the physiological saline 50um around the electrode needle into plasma, and the plasma realizes the cutting of the target tissue, thereby facilitating the clean cutting of the target tissue, improving the surgical efficiency, shortening the operation time, reducing the operation cost, meeting the requirements of refined surgery, improving the surgical accuracy and reducing the surgical risk, and saving injection needles and instruments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of this embodiment;

[0023] Figure 2 This is a schematic diagram of the electrode needle connection structure of this embodiment;

[0024] Figure 3 This is a schematic diagram of the insulating head structure of this embodiment;

[0025] Figure 4 Schematic diagram of the electrode needle structure of this embodiment;

[0026] Figure 5 It is a cross-sectional schematic diagram of the connection structure of the electrode needle head and the insulating head of this embodiment;

[0027] Figure 6 This is a schematic diagram of the outer pipeline structure of this embodiment;

[0028] Figure 7 This is a schematic diagram of the electrode negative wire installation structure of this embodiment;

[0029] Figure 8 This is a schematic structural diagram of the first clamping portion of this embodiment;

[0030] Fig. 9 Schematic diagram of the structure of the second clamping portion of this embodiment.

[0031] Figure markings: 1. injection part; 11. electrode needle; 12. injection tube; 13. size scale mark; 2. holding assembly; 20. first clamping part; 21. clamping part; 211. first tube cavity; 212. second tube cavity; 213. clamping piece; 214. handle tube cavity; 215. third tube cavity; 22. second clamping part; 3. electrode part; 311. positive electrode wire; 312. insulating head; 313. outer pipe; 314. first negative insulation layer; 315. positive insulation layer; 316. electrode negative wire; 317. second negative insulation layer; 4. Luer connector; 5. connecting plug assembly. DETAILED DESCRIPTION

[0032] The following is combined with Figures 1 to 9 The present invention is further described in detail.

[0033] A plasma electrode with injection function, such as Figure 1 As shown, it is composed of an injection part 1, a holding component 2, a Luer connector 4 and a connecting plug component 5, including:

[0034] The injection part 1 includes an electrode needle 11 for exciting saline into plasma and injecting saline, and an injection tube 12 fixedly connected to the end of the electrode needle 11. The other end of the injection tube 12 is connected to the Luer connector 4 to form an injection cavity.

[0035] The electrode part 3 includes a positive electrode wire 311 wound around one end of the electrode needle 11, an insulating head 312 fixedly connected to one end of the electrode needle 11, and an outer tube 313 fixedly connected to the end of the insulating head 312 away from the electrode needle 11, a first negative electrode insulating layer 314 is arranged on the outer tube 313, a positive electrode insulating layer 315 is arranged at a position near the positive electrode wire 311 inside the outer tube 313, a negative electrode wire 316 is fixedly connected to the end of the outer tube 313 away from the electrode needle 11, the negative electrode wire 316 and the outer tube 313 are connected to form a negative electrode of the circuit, a second negative electrode insulating layer 317 is arranged at the contact portion between the negative electrode wire 316 and the outer tube 313, the positive electrode wire 311 and the electrode needle 11 are connected to form a positive electrode of the circuit, and the positive electrode wire 311 is energized to excite 50um of saline around the electrode needle 11 into plasma to cut tissue.

[0036] The holding assembly 2 is arranged at the other end of the injection part 1, and is used to fix the electrode negative wire 316 and to hold the plasma electrode.

[0037] Embodiment 1

[0038] The electrode needle 11 and the insulating head 312 are fixedly connected by glue. Further, as Figure 4 As shown, the electrode needle 11 has small cut surfaces on both sides of the needle tip, and the end of the electrode needle 11 is an inclined surface, and a needle tube inner hole is provided in the inclined surface for injecting physiological saline. Furthermore, the insulating head 312 and the outer pipe 313 are fixedly connected by glue to achieve the purpose of sealing.

[0039] By setting up the holding component 2, it is easy to operate during surgery, and through the cooperation of the injection part 1 and the electrode part 3, physiological saline is injected into the target tissue. When the target tissue bulges, the positive electrode wire 311 and the electrode needle 11 are connected to form the positive pole of the circuit, and the negative electrode wire 316 and the outer pipe 313 are connected to form the negative pole of the circuit. The positive electrode wire 311 is energized to excite 50um of physiological saline around the electrode needle 11 into plasma, and the plasma realizes the cutting of the target tissue, thereby facilitating the clean cutting of the target tissue, improving the operation efficiency, shortening the operation time, reducing the operation cost, meeting the requirements of refined surgery, improving the operation accuracy and reducing the operation risk, and saving injection needles and instruments.

[0040] Specifically, Figure 2 As shown, the injection tube 12 is provided with a size scale mark 13 .

[0041] Furthermore, during use, medical personnel can observe the size scale mark 13 to clearly know the insertion degree of the electrode needle 11, and isolate the charged conductor through the first negative electrode insulating layer 314 to prevent current leakage and short circuit.

[0042] Specifically, Figure 3 As shown, a cavity is provided inside the insulating head 312 , and the diameter of the cavity at one end close to the electrode needle head 11 is larger than the diameter at one end away from the electrode needle head 11 .

[0043] Specifically, Figure 5 As shown, the positive electrode wire 311 is wound around the electrode needle 11 near the injection tube 12 .

[0044] Embodiment 2

[0045] like Figure 5 and Figure 6 As shown, the outer pipe 313 is composed of a first tube body with an expanded and deformed mouth, a second tube body with ports approaching each other and gradually narrowing and expanding, a horizontal third tube body, an inclined fourth tube body and a straight fifth tube body. Furthermore, the positive electrode wire 311, the positive insulating layer 315 and the injection tube 12 extend out from the other end of the inner cavity of the outer pipe 313.

[0046] Specifically, Figure 5 As shown, the portion of the positive electrode wire 311 not covered with the positive electrode insulation layer 315 is entirely within the inner cavity of the insulation head 312 .

[0047] Embodiment 3

[0048] like Figure 5 and Figure 7As shown, the first negative electrode insulating layer 314 and one end of the first tube body of the outer pipe 313 are at a certain distance, so that a part of the outer pipe 313 is exposed to the outside. Furthermore, the second negative electrode insulating layer 317 is at a certain distance from the tail end of the outer pipe 313.

[0049] Furthermore, the positive electrode wire 311 and the negative electrode wire 316 are both in physiological saline, and the positive electrode wire 311 and the negative electrode wire 316 are insulated and non-connected. When power is turned on, there is a voltage difference between the positive electrode wire 311 and the negative electrode wire 316, and the physiological saline is conductive. Current is formed between the positive electrode wire 311 and the negative electrode wire 316 to form an electric field, and the positive electrode wire 311 excites the physiological saline of 50um around the electrode needle 11 into plasma, and the plasma moves at high speed in the electric field to generate kinetic energy. When the electrode needle 11 is close to the tissue, the kinetic energy of the plasma in the electric field hits the target tissue, causing the tissue to decompose.

[0050] Specifically, Figure 1 , Figure 7 and Figure 8 As shown, the holding assembly 2 is composed of a first clamping portion 20, a clamping portion 21 and a second clamping portion 22, and the first clamping portion 20 is clamped in the clamping portion 21. Further, the first clamping portion 20 and the second clamping portion 22 can be assembled.

[0051] Specifically, Fig. 9 As shown, the second clamping portion 22 includes:

[0052] The first tube cavity 211 is arranged at an end away from the first clamping portion 20 and the clamping portion 21 along the length direction.

[0053] The second tube cavity 212 is arranged inside the first clamping portion 20 and the clamping portion 21 along the length direction.

[0054] The clamping member 213 is respectively disposed inside the first clamping portion 20 and the clamping portion 21 at a position close to the first tube cavity 211 .

[0055] The handle lumen 214 is vertically arranged at a position between the first clamping portion 20 and the clamping portion 21 close to the second lumen 212 .

[0056] The third lumen 215 is disposed at a position where the first clamping portion 20 and the clamping portion 21 are away from the first lumen 211 .

[0057] Embodiment 4

[0058] like Figure 7As shown, the fifth tube body of the outer tube 313 is located in the first tube cavity 211 of the first clamping part 20 and the second clamping part 22, and the end of the second negative electrode insulating layer 317 of the outer tube 313 is located at the boundary between the first tube cavity 211 and the second tube cavity 212 of the first clamping part 20 and the second clamping part 22.

[0059] Furthermore, when in use, the first clamping portion 20 can be clamped in the second clamping portion 22. Specifically, the first clamping portion 20 is clamped in the second clamping portion 22 via the clamping member 213, thereby improving the stability of the connection between the first clamping portion 20 and the second clamping portion 22.

[0060] How it works

[0061] When in use, the electrode needle 11 is inserted into the target tissue position, and the Luer connector 4 and the connecting plug assembly 5 are connected to the injection part 1 and the holding assembly 2, wherein the electrode needle 11 is connected to a wire, and the other end of the wire is connected to the connecting plug assembly 5 to form a positive electrode, the holding assembly 2 is connected to the negative wire, and the negative wire is connected to the connecting plug assembly 5 to form a negative electrode, and the physiological saline is transported to the position of the positive electrode wire 311 in the internal cavity of the insulating head 312 through the injection tube 12, and the physiological saline is injected into the target tissue through the electrode needle 11 to make the target tissue bulge, and then the electrode needle 11 is pulled out of the tissue and the positive electrode wire 311 and the electrode negative wire 316 are energized, and the positive electrode wire 311 excites the physiological saline 50um around the electrode needle 11 into plasma, and the plasma moves at high speed in the electric field to generate kinetic energy. When the electrode needle 11 approaches the tissue, the kinetic energy of the plasma in the electric field hits the target tissue to decompose the tissue.

[0062] This specific embodiment is merely an explanation of the invention and is not a limitation of the invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as they are within the scope of protection of the invention, they are protected by patent law.

Claims

1. A plasma electrode with injection function, comprising an injection portion (1), a holding component (2), a Luer connector (4) and a connecting plug component (5), It is characterized in that include: An injection section (1), the injection section (1) comprising an electrode needle (11) for exciting saline solution into plasma and injecting saline solution, and an injection tube (12) fixedly connected to the end of the electrode needle (11), the other end of the injection tube (12) being connected to a Luer connector (4) to form an injection cavity; The electrode part (3) comprises a positive electrode wire (311) wound around one end of the electrode needle (11), an insulating head (312) fixedly connected to one end of the electrode needle (11), and an outer pipe (313) fixedly connected to the insulating head (312) at one end away from the electrode needle (11), wherein a cavity is arranged inside the insulating head (312), and the diameter of the cavity at one end close to the electrode needle (11) is larger than the diameter of the cavity at one end away from the electrode needle (11), a first negative electrode insulating layer (314) is arranged on the outer pipe (313), and the inner part of the outer pipe (313) close to the positive electrode wire ( A positive electrode insulating layer (315) is provided at the position of the outer tube (313), an electrode negative electrode wire (316) is fixedly connected to one end of the outer tube (313) away from the electrode needle (11), the electrode negative electrode wire (316) and the outer tube (313) are connected to form a circuit negative electrode, a second negative electrode insulating layer (317) is provided at the contact portion between the electrode negative electrode wire (316) and the outer tube (313), the positive electrode wire (311) and the electrode needle (11) are connected to form a circuit positive electrode, and the positive electrode wire (311) is energized to excite 50 um of physiological saline around the electrode needle (11) into plasma, thereby cutting tissue; A holding component (2) is arranged at the other end of the injection part (1), and the holding component (2) is used to fix the electrode cathode wire (316) and to hold the plasma electrode.

2. The plasma electrode according to claim 1, It is characterized in that The injection tube (12) is provided with a size scale mark (13).

3. The plasma electrode according to claim 1, It is characterized in that The positive electrode wire (311) is wound around the electrode needle (11) at a position close to the injection tube (12).

4. The plasma electrode according to claim 1, It is characterized in that The portion of the positive electrode wire (311) not covered with the positive electrode insulating layer (315) is entirely within the inner cavity of the insulating head (312).

5. The plasma electrode according to claim 1, It is characterized in that The holding assembly (2) is composed of a first clamping portion (20), a clamping portion (21), and a second clamping portion (22), and the first clamping portion (20) is clamped in the clamping portion (21).

6. The plasma electrode according to claim 5, It is characterized in that The second clamping portion (22) comprises: A first tubular cavity (211) is arranged along the length direction at an end away from the first clamping portion (20) and the clamping portion (21); A second tube cavity (212) is arranged inside the first clamping portion (20) and the clamping portion (21) along the length direction; A clamping member (213) is respectively arranged inside the first clamping portion (20) and the clamping portion (21) at a position close to the first tube cavity (211); A handle lumen (214) is vertically arranged at a position of the first clamping portion (20) and the clamping portion (21) close to the second lumen (212); The third tube cavity (215) is arranged at a position where the first clamping portion (20) and the clamping portion (21) are far away from the first tube cavity (211).

7. The plasma electrode according to claim 6, It is characterized in that One end of the outer tube (313) is clamped in the first tube cavity (211).

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