Radiofrequency plasma surgical electrode head

Abstract

The present invention discloses a radio frequency plasma surgical electrode blade head, comprising a blade rod, a handle, a drip tube, a cable plug and a suction tube, wherein the blade rod is connected to the front end of the handle, and the drip tube, the cable plug and the suction tube are connected to the rear end of the handle; the device penetrates a suction hole and introduces an electrode wire into the penetrated suction hole, so that one end of the front electrode sheet is blocked by a large area. When suction is temporarily impossible, the back side can continue to suction, and at the same time, the electrode wire in the suction hole will cut and fragment tissue, thereby improving the suction efficiency and expanding the suction range. By arranging the drip tube hole on the end face of the ceramic head, the drip tube hole is directly connected to the drip tube, and a medium such as physiological saline can directly, quickly and stably wrap the electrode sheet, thereby generating plasma, which can solve the problems in the prior art of slow suction and easy clogging of biological tissue after cutting, and slow and unstable contact between the electrode sheet and physiological saline.

Description

Technical Field

[0001] The present invention relates to medical equipment, in particular to a radio frequency plasma surgical electrode head. Background Art

[0002] The radiofrequency plasma surgical system is a new generation of low-temperature plasma surgical system that can be used for soft tissue dissection, resection, ablation, hemostasis and desiccation in surgical operations. It can be used in conjunction with an endoscope system for intracavitary surgery or with an imaging system for interventional treatment.

[0003] The low-temperature plasma surgery system uses a 100kHz radio frequency electric field to excite the electrolyte (physiological saline) to form a thin plasma layer with a thickness of 100μm-200μm around the electrode. The plasma layer is composed of a large number of charged particles, which generate sufficient energy (electron volts·Tesla) to open the molecular bonds that make up the target tissue cells at a relatively low temperature, causing the tissue to quickly decompose into low-molecular-weight molecules and atoms, thereby achieving efficient tissue ablation, cutting, and coagulation effects at a relatively low temperature. Low-temperature plasma surgery has many advantages such as simple operation method, low operating temperature, small surgical trauma, fast postoperative recovery, and high cure rate, and has outstanding performance in minimally invasive surgery.

[0004] During the use of existing radio frequency plasma surgical electrodes, the suction holes of the ceramic head are easily clogged, the suction flow rate is not large enough, and the physiological saline cannot contact the electrode well to generate plasma.

[0005] Chinese patent document CN201320748757 describes a plasma scalpel that addresses the operational complexity associated with large-scale equipment by simplifying its structure, allowing for easier operation while easily draining waste tissue and fluids during surgery. However, it suffers from several drawbacks: After prolonged operation, the electrode pads and suction holes can become clogged with biological tissue. This prevents rapid suction of excised tissue during complex joint surgeries, and during ENT surgeries, the instilled saline solution cannot quickly and stably contact the electrode pads to generate plasma.

[0006] In view of the defects of the existing technology, the purpose of this application is to provide a radio frequency plasma surgical electrode blade that can solve the problems in the existing technology of slow absorption of biological tissue after cutting, easy clogging, and slow and unstable contact between the electrode and physiological saline. Summary of the Invention

[0007] The purpose of the present invention is to provide a radio frequency plasma surgical electrode head to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] The radiofrequency plasma surgical electrode blade includes a blade rod, a handle, a drip tube, a cable plug and a suction tube. The blade rod is connected to the front end of the handle, and the drip tube, cable plug and suction tube are connected to the rear end of the handle; the cable plug is connected to the body to enable the blade to generate a thin layer of plasma, the drip tube is connected to the physiological saline supply device for introducing physiological saline during surgery, and the suction tube is connected to the negative pressure suction device for aspirating the fragmented tissue after cutting during surgery.

[0010] The knife rod includes an end cap, a ceramic head, an electrode sheet, an insulating layer, a metal tube, an insulating protective layer, an instillation inner tube, an aspiration inner tube, an electrode wire insulating protection tube and an electrode wire. The insulating layer is located at the outermost layer and is sleeved on the outside of the metal tube. The insulating protective layer is located on the inner side of the metal tube and is arranged in a fit with the metal tube. The aspiration inner tube, the instillation inner tube and the electrode wire insulating protection tube are all located on the inner side of the insulating protective layer. The electrode wire is located in the electrode wire insulating protection tube. The end cap is fixed at the front end of the metal tube. The ceramic head is located at the front end of the metal tube and is inserted into the end cap. An electrode sheet is provided on the top of the ceramic head. The suction inner tube, the instillation inner tube and the electrode wire insulating protection tube are all extended into the ceramic head, and the electrode wire and the electrode sheet are in contact and electrically connected. The front ends of the suction inner tube and the instillation inner tube are located on the electrode sheet.

[0011] Specifically, the front of the end cap has a through end cap hole, and the tail of the end cap has an open port for docking with the inside of the metal tube. The main body of the ceramic head is cylindrical, and the ceramic head has a ceramic mounting hole, a suction hole, a drip water outlet, a drip tube hole, a suction tube hole, a drip water trough and an electrode wire mounting groove; the ceramic mounting hole and the drip water trough are located on the end face of the ceramic head, the drip tube hole and the suction tube hole are located on the side of the ceramic head facing the metal tube, the suction hole is opened at the upper and lower ends of the ceramic head, the drip water outlet is located on the upper part of the side of the ceramic head facing the metal tube, the electrode wire mounting groove is located on the bottom surface of the ceramic head, the suction tube hole is docked and connected with the suction hole, and the drip tube hole and the drip water trough are docked and connected; an electrode sheet mounting hole is opened on the electrode sheet, and an electrode sheet bent foot is provided at the bottom of the electrode sheet to be inserted into the drip water trough, and an open hole corresponding to the suction hole and the drip water trough is also opened on the electrode sheet; there are multiple ceramic mounting holes and electrode sheet mounting holes and they are arranged in one-to-one correspondence.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the device penetrates the suction hole and introduces an electrode wire into the penetrated suction hole, so that one end of the front electrode sheet is blocked by a large area. When suction is temporarily impossible, the back side can continue to suction. At the same time, the electrode wire in the suction hole will cut and fragment the tissue, thereby improving the suction efficiency and expanding the suction range. By opening the drip tube hole on the end face of the ceramic head, the drip tube hole is directly connected to the drip tube, and media such as physiological saline can directly and quickly stabilize and wrap the electrode sheet, thereby generating plasma. This can solve the problems in the prior art of slow suction and easy clogging of biological tissue after cutting, and slow and unstable contact between the electrode sheet and physiological saline. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the overall structural diagram of the present invention.

[0014] Figure 2 for Figure 1 Explosion structure diagram at point A in the middle.

[0015] Figure 3 for Figure 1 Cross-sectional view at point A in the middle.

[0016] Figure 4 It is an enlarged view of the end cap in the present invention.

[0017] Figure 5 It is an enlarged view of the ceramic head in the present invention.

[0018] Figure 6 This is a bottom-up view of the ceramic head of the present invention.

[0019] Figure 7 It is an enlarged view of the electrode sheet in the present invention.

[0020] In the figure, 1- knife rod, 2- handle, 3- drip tube, 4- cable plug, 5- suction tube, 6- end cap, 7- ceramic head, 8- electrode sheet, 9- insulation layer, 10- metal tube, 11- insulation protective layer, 12- drip inner tube, 13- suction inner tube, 14- electrode wire insulation protection tube, 15- electrode wire, 61- end cap hole, 62- port, 71- ceramic mounting hole, 72- suction hole, 73- drip water outlet, 74- drip tube hole, 75- suction tube hole, 76- drip water trough, 77- electrode wire mounting slot, 81- electrode sheet mounting hole, 82- electrode sheet bent foot. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0022] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0024] See also Figure 1 In an embodiment of the present invention, a radio frequency plasma surgical electrode blade head includes a blade rod 1, a handle 2, a drip tube 3, a cable plug 4 and a suction tube 5. The blade rod 1 is connected to the front end of the handle 2, and the drip tube 3, cable plug 4 and suction tube 5 are connected to the rear end of the handle 2. During operation, the handle 2 is held, and the blade body is installed through the blade rod 1 for surgery. The cable plug 4 is connected to the body to enable the blade body to generate a thin plasma layer. The drip tube 3 is connected to a physiological saline supply device for introducing physiological saline during surgery. The suction tube 5 is connected to a negative pressure suction device for aspirating the fragmented tissue after cutting during surgery.

[0025] See Figure 2-7 The knife rod 1 includes an end cap 6, a ceramic head 7, an electrode sheet 8, an insulating layer 9, a metal tube 10, an insulating protective layer 11, an instillation inner tube 12, a suction inner tube 13, an electrode wire insulating protection tube 14 and an electrode wire 15. The insulating layer 9 is located at the outermost layer and is sleeved on the outside of the metal tube 10. The insulating protective layer 11 is located on the inner side of the metal tube 10 and is arranged in a fit with the metal tube 10. The suction inner tube 13, the instillation inner tube 12 and the electrode wire insulating protection tube 14 are all located on the inner side of the insulating protective layer 11. The electrode wire 15 is located in the electrode wire insulating protection tube 14. The end cap 6 is fixed at the front end of the metal tube 10. The ceramic head 7 is located at the front end of the metal tube 10 and is inserted into the end cap 6. The top of the ceramic head 7 is provided with an electrode sheet 8. The suction inner tube 13, the instillation inner tube 12 and the electrode wire insulating protection tube 14 all extend into the ceramic head 7, and the electrode wire 15 is in contact with and electrically connected to the electrode sheet 8. The front ends of the suction inner tube 13 and the instillation inner tube 12 are located on the electrode sheet 8.

[0026] Specifically, the front of the end cap 6 has a through end cap hole 61, and the rear of the end cap 6 has an open port 62 for docking with the inside of the metal tube 10. The main body of the ceramic head 7 is cylindrical, and the ceramic head 7 has a ceramic mounting hole 71, a suction hole 72, a drip water outlet 73, a drip pipe hole 75, a suction pipe hole 75, a drip water groove 76 and an electrode wire mounting groove 77; the ceramic mounting hole 71 and the drip water groove 76 are located on the end face of the ceramic head 7, and the drip pipe hole 75 and the suction pipe hole 75 are located on the side of the ceramic head 7 facing the metal tube 10 The suction hole 72 is opened at the upper and lower ends of the ceramic head 7, the drip water outlet 73 is located at the upper part of the ceramic head 7 facing the metal tube 10, the electrode wire mounting groove 77 is located on the bottom surface of the ceramic head 7, the suction pipe hole 75 is connected to the suction hole 72, and the drip pipe hole 75 is connected to the drip water groove 76; the electrode sheet 8 is provided with an electrode sheet mounting hole 81, and an electrode sheet bent foot 82 is provided at the bottom of the electrode sheet 8 to be inserted into the drip water groove 76. The electrode sheet 8 is also provided with open holes corresponding to the suction hole 72 and the drip water groove 76.

[0027] There are multiple ceramic mounting holes 71 and electrode sheet mounting holes 81, which are arranged in a one-to-one correspondence.

[0028] The ceramic mounting hole 71 is used to insert the electrode wire 15, the suction hole 72 is convenient for sucking the cut and shredded tissue, the drip tube hole 75 is used to assemble the drip inner tube 12, the drip water outlet 73 is convenient for the discharge of physiological saline to wrap the electrode wire 15 along the ceramic surface, the drip water tank 76 is used to store physiological saline, and the electrode wire mounting groove 77 is convenient for the electrode wire 15 to be buried therein; the electrode sheet 8 is provided with an electrode wire 15 mounting hole, and the electrode sheet bent foot 82 can prevent the drip water tank 76 from being blocked.

[0029] First, the ceramic head 7 is assembled in the end cap hole 61 of the end cap 6, then the electrode wire 15 passes through the electrode sheet mounting hole 81, and then passes through the ceramic mounting hole 71 of the ceramic head 7. The electrode wire 15 is bent and placed in the electrode wire mounting groove 77 of the ceramic head 7, and then one end of the drip inner tube 12 is connected to the drip tube hole 75 and the other end is connected to the drip tube 3, one end of the suction inner tube 13 is connected to the suction tube hole 75 and the other end is connected to the suction tube 5, finally, one end of the metal tube 10 is connected to the port 62 of the end cap 6, the metal tube 10 is wrapped with an insulating layer 9, and the other end of the metal tube 10 located inside the handle 2 is connected to one wire core of the cable plug 4, and the electrode wire 15 is connected to the other wire core of the cable plug 4.

[0030] This device penetrates the suction hole 72 and introduces an electrode wire 15 into the penetrated suction hole 72, so that one end of the front electrode sheet 8 is blocked by a large area. When suction is temporarily unable to be drawn, the back side can continue to draw suction. At the same time, the electrode wire 15 in the suction hole 72 will cut and fragment the tissue, thereby improving the suction efficiency and expanding the suction range. By opening the drip tube hole 75 on the end face of the ceramic head 7, the drip tube hole 75 is directly connected to the drip tube 3, and a medium such as physiological saline can directly and quickly stably wrap the electrode sheet 8, thereby generating plasma. This can solve the problems in the prior art of slow suction and easy clogging of biological tissue after cutting, and slow and unstable contact between the electrode sheet 8 and physiological saline.

[0031] It will be apparent 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 invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0032] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method 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 embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A radiofrequency plasma surgical electrode blade, comprising a blade rod (1), a handle (2), a drip tube (3), a cable plug (4) and a suction tube (5), wherein the blade rod (1) is connected to the front end of the handle (2), and the drip tube (3), the cable plug (4) and the suction tube (5) are connected to the rear end of the handle (2); the cable plug (4) is connected to the body to enable the blade body to generate a plasma thin layer, the drip tube (3) is connected to a physiological saline supply device to introduce physiological saline during surgery, and the suction tube (5) is connected to a negative pressure suction device to aspirate the fragmented tissue after cutting during surgery; characterized in that The knife rod (1) comprises an end cap (6), a ceramic head (7), an electrode sheet (8), an insulating layer (9), a metal tube (10), an insulating protective layer (11), an instillation inner tube (12), an aspiration inner tube (13) and an electrode wire (15), wherein the insulating layer (9) is located at the outermost layer and is sleeved on the outside of the metal tube (10), the insulating protective layer (11) is located on the inner side of the metal tube (10) and is arranged in contact with the metal tube (10), and the aspiration inner tube (13) and the instillation inner tube (12) are both located at the insulating protective layer. The inner side of the layer (11), the end cap (6) is fixed to the front end of the metal tube (10), the ceramic head (7) is located at the front end of the metal tube (10) and is inserted into the end cap (6), the top of the ceramic head (7) is provided with an electrode sheet (8), the suction inner tube (13), the dripping inner tube (12) and the electrode wire insulation protection tube (14) are all extended into the ceramic head (7), and the electrode wire (15) and the electrode sheet (8) are in contact and electrically connected, and the front ends of the suction inner tube (13) and the dripping inner tube (12) are located on the electrode sheet (8); The front of the end cap (6) has a through end cap hole (61), and the rear of the end cap (6) has an open port (62) for connecting to the inside of the metal tube (10). The main body of the ceramic head (7) is cylindrical, and the ceramic head (7) has a ceramic mounting hole (71), a suction hole (72), a drip water outlet (73), a drip pipe hole (75), a suction pipe hole (75) and a drip water tank (76); the ceramic mounting hole (71) and the drip water tank (76) are connected to each other. 6) is located on the end face of the ceramic head (7), the dripping tube hole (75) and the suction tube hole (75) are located on the side of the ceramic head (7) facing the metal tube (10), the suction hole (72) is opened through the upper and lower ends of the ceramic head (7), the dripping water outlet (73) is located on the upper part of the side of the ceramic head (7) facing the metal tube (10), the suction tube hole (75) and the suction hole (72) are connected to each other, and the dripping tube hole (75) and the dripping water tank (76) are connected to each other.

2. The radio frequency plasma surgical electrode head according to claim 1, characterized in that: The electrode sheet (8) is provided with an electrode sheet mounting hole (81), and an electrode sheet bent foot (82) is provided at the bottom of the electrode sheet (8) for inserting into the dripping water trough (76). The electrode sheet (8) is also provided with an open hole corresponding to the suction hole (72) and the dripping water trough (76).

3. The radio frequency plasma surgical electrode head according to claim 1, characterized in that: The inner side of the insulating protective layer (11) is also provided with an electrode wire insulating protection tube (14), and the electrode wire (15) is located in the electrode wire insulating protection tube (14).

4. The radiofrequency plasma surgical electrode head according to claim 3, characterized in that: The bottom surface of the ceramic head (7) is also provided with an electrode wire installation groove (77) for clamping and fixing the electrode wire insulation protection tube (14).

5. The radio frequency plasma surgical electrode head according to claim 2, characterized in that: There are multiple ceramic mounting holes (71) and electrode sheet mounting holes (81), which are arranged in a one-to-one correspondence.

Images