Plasma scalpel head

Abstract

The utility model discloses a plasma scalpel head which comprises a handle, a water guide pipe arranged at one end of the handle, a liquid injection pipe, a cable and a suction pipe, the liquid injection pipe, the cable and the suction pipe are arranged in the handle and the water guide pipe, a scalpel head structure is fixed to the end of the water guide pipe, and the scalpel head structure comprises a working electrode, an insulation pipe body and a loop electrode; the loop electrode sleeves the outer side of the insulating pipe body and is positioned on the inner side of the water guide pipe; a liquid injection gap for injecting normal saline is formed between the water guide pipe and the loop electrode; the suction tube and the center hole of the insulating tube body form a suction passage; and the cable is electrically connected with the working electrode and the loop electrode. The plasma generator is reasonable in structural arrangement, plasma can be effectively, stably and efficiently generated, the operation efficiency can be improved, liquid injection and suction operation can be effectively achieved, the blocking condition can be prevented, corresponding operation is more convenient and effective, and the working efficiency is improved. The technical defects that in the prior art, plasma generated by a plasma scalpel is not uniform, and a suction tube is prone to being blocked are overcome.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and particularly relates to a plasma scalpel head. Background Art

[0002] The low-temperature plasma scalpel realizes the concentration of the electric field intensity through special designs such as the arrangement design and material design of the electrodes, and the cooperation of the applied waveforms, breaks down the gas film, and forms plasma. At the interface between the plasma and the physiological saline solution, a plasma sheath layer with a thickness of about 100 μm will be formed. The plasma sheath layer can accelerate ions, bombard the solution at the interface, and excite active groups such as H+, OH-, and Na+. The accelerating effect of the electric field on the active groups bombards the surface of the biological tissue, breaks the molecular chain, so that the tissue cells on the surgical wound surface are decomposed in units of molecules, and the formed biological tissue particles can be discharged through the physiological saline circulation, thereby realizing the flesh ablation, punching and cutting effects on the surgical wound surface. The plasma generated during the operation can also disinfect and sterilize the surgical wound surface. The temperature of the plasma generated during this surgical process is very low, and the temperature can be accurately controlled within the range of 40-70 degrees Celsius, which not only ensures that the helical structure of collagen molecules shrinks, but also maintains the vitality of cells, and has the functions of ablation, hemostasis and suction while removing lesions. Its action mode has a low energy level and a small range of damage to human tissues; the diseased tissue is cut and ablated by operating the electrode, and the cutting is fast and the wound is small. Compared with traditional surgery, the operation time and the postoperative recovery time are shortened.

[0003] Although the existing plasma scalpels can meet the usage requirements in general cases, they still have certain technical deficiencies. For example, the low-temperature plasma ablation technology uses the working electrode to excite the plasma to cut, ablate or coagulate and stop bleeding the tissue. However, most of the existing plasma scalpel electrodes are multi-electrode wire structures, and the electric field distortion generated by the multi-electrode wires may affect the generation of plasma, resulting in poor uniformity and unsatisfactory cutting effects.

[0004] Moreover, during low-temperature plasma ablation, due to the large contact area of the multi-electrode wire structure with the tissue, it is easier to cause tissue adhesion and affect the surgical efficiency.

[0005] Furthermore, the current electrode shapes are mostly parallel structures. When the physiological saline is transported to the end, it cannot ensure that the working electrode is covered to generate stable plasma. Most of the existing suction tubes are connected internally by using metal adapter tubes. If the insulation treatment is not sufficient, there is a risk of short circuit, which will affect the use of the plasma scalpel and even cause harm to the human body. Content of the Utility Model

[0006] The purpose of the present utility model is to provide a plasma scalpel head, aiming to solve the technical deficiencies in the prior art that the plasma generated by the plasma scalpel is uneven and the suction tube is prone to blockage.

[0007] The technical solution for achieving the purpose of the present utility model is a plasma scalpel head, which includes a handle, a water guide tube arranged at one end of the handle, and a liquid injection tube, a cable and a suction tube arranged in the handle and the water guide tube. The end of the water guide tube is fixed with a blade head structure, and the blade head structure includes a working electrode, an insulating tube body and a loop electrode;

[0008] The end face of the insulating tube body is a limiting plane. The middle part of the working electrode is attached to the limiting plane, and the other end of the working electrode extends out of the end of the insulating tube body;

[0009] The loop electrode is sleeved outside the insulating tube body and is inside the water guide tube. The loop electrode and the working electrode are isolated by the insulating tube body;

[0010] A liquid injection gap for injecting physiological saline is arranged between the water guide tube and the loop electrode;

[0011] The suction tube is at the center of the loop electrode and is connected to the end of the insulating tube body. The suction tube and the central hole of the insulating tube body form a suction passage;

[0012] The cable is electrically connected to the working electrode and the loop electrode.

[0013] Further preferably: at least one wire hole is arranged on the side wall of the insulating tube body. One end of the insulating tube body is integrally formed with a connecting tube. An external thread is arranged on the outer wall of the connecting tube, and an internal thread is arranged on the inner wall of the insulating tube;

[0014] The suction tube is threadedly connected to the external thread of the connecting tube, and the working electrode is threadedly connected to the internal thread of the insulating tube;

[0015] The cable of the working electrode is arranged in the wire hole.

[0016] Further preferably: the working electrode includes a central part, and several blades with external threads integrally formed on the edge of the central part. A semi-circular sheet body is integrally formed at the end of the blade, and the height of the semi-circular sheet body is greater than the height of the blade;

[0017] The blade is threadedly connected in the insulating tube, and the limiting plane abuts against the end face of the semi-circular sheet body.

[0018] Further preferably: the working electrode is a cross-shaped electrode, an X-shaped electrode or a rice-shaped electrode.

[0019] More preferably, the thickness of the edge of the semi-circular sheet gradually and uniformly decreases with the increasing distance from the insulating tube body, forming a blade shape.

[0020] More preferably, the insulating tube body is a ceramic tube body, an alumina tube body or a zirconia tube body.

[0021] More preferably, the working electrode is a tungsten electrode, a platinum-iridium alloy electrode, a titanium electrode or a molybdenum electrode.

[0022] The utility model has positive effects: the structure of the utility model is reasonably arranged. Through the cooperation of the working electrode, the loop electrode and the insulating tube body, it can not only effectively, stably and efficiently generate plasma, which is beneficial to improving the surgical efficiency, but also there is a liquid injection gap for injecting physiological saline between the water guide tube and the loop electrode; the suction tube and the central hole of the insulating tube body form a suction passage, and it can also effectively realize the liquid injection and suction operations, prevent blockage, the overall structure is simple, the use is safe and reliable, the corresponding operation is more convenient and effective, solve the technical deficiencies that the plasma generated by the plasma scalpel in the prior art is uneven and the suction tube is easy to be blocked, and has strong applicability;

[0023] The working electrode includes a central part, and a plurality of blades with external threads integrally formed on the edge of the central part. A semi-circular sheet is integrally formed at the end of the blade. The use of the semi-circular sheet is also beneficial to the drainage effect, can make the physiological saline more accurately and effectively transported to the tip of the working electrode, and improve the drainage effectiveness and smoothness;

[0024] And the middle part of the working electrode is attached to the limiting plane, and the other end of the working electrode extends out of the end of the insulating tube body, which not only does not occupy the space of the suction tube, but also can perform secondary ablation on the inhaled tissue, prevent the suction tube from being blocked by larger tissues, improve the drainage effectiveness and smoothness, and the arc-shaped electrode side will not cause scratches due to touching tissues during the operation;

[0025] Moreover, the thickness of the edge of the semi-circular sheet gradually and uniformly decreases with the increasing distance from the insulating tube body, forming a blade shape, which is beneficial to reducing the area of contact with tissues, not easily adhering to tissues and affecting the surgical efficiency, and has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to make the content of the utility model easier to be clearly understood, the following further details the utility model according to specific embodiments and in conjunction with the drawings, wherein:

[0027] Figure 1 is a structural schematic diagram of the utility model;

[0028] Figure 2 is a specific structural schematic diagram of the tool head structure of the utility model;

[0029] Figure 3 is Figure 2 a sectional structure schematic diagram;

[0030] Figure 4 is a specific structure schematic diagram of the insulating tube body in the present utility model;

[0031] Figure 5 is a first structure schematic diagram of the working electrode in the present utility model;

[0032] Figure 6 is Figure 5 a structure diagram from another perspective of

[0033] Figure 7 is a second structure schematic diagram of the working electrode in the present utility model;

[0034] Figure 8 is a third structure schematic diagram of the working electrode in the present utility model.

[0035] Reference numerals: handle 1, water guide tube 2, liquid injection tube 3, cable 4, suction tube 5, cutter head structure 6, working electrode 61, central part 611, blade 612, semi-circular sheet body 613, insulating tube body 62, loop electrode 63, clamping groove 7, liquid injection gap 8, wire hole 9, connecting tube 10. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described 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 of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0037] Embodiment 1

[0038] As shown in Figures 1 to 6 , a plasma cutter head includes a handle 1, a water guide tube 2 provided at one end of the handle, and a liquid injection tube 3, a cable 4 and a suction tube 5 provided in the handle and the water guide tube. In this embodiment, the above structures are all conventional structures of the prior art and are only simply applied.

[0039] In this embodiment, a cutter head structure 6 is fixed to the end of the water guide tube. The cutter head structure includes a working electrode 61, an insulating tube body 62 and a loop electrode 63. In this embodiment, the insulating tube body is a ceramic tube body, an alumina tube body or a zirconia tube body. The working electrode is a tungsten electrode, a platinum-iridium alloy electrode, a titanium electrode or a molybdenum electrode.

[0040] Moreover, in this embodiment, the end face of the insulating tube body is a limiting plane 7, the middle part of the working electrode is attached to the limiting plane, and the other end of the working electrode extends out of the end of the insulating tube body; through the above structure, it does not occupy the space of the suction tube, and can perform secondary ablation on the sucked tissue, further preventing the suction tube from being blocked by larger tissue. Moreover, the loop electrode is sleeved on the outside of the insulating tube body and on the inside of the water conduit, and the loop electrode and the working electrode are isolated by the insulating tube body; an injection gap 8 for injecting saline is provided between the water conduit and the loop electrode; it is convenient for the injection of saline, improves safety and is easy to install.

[0041] Moreover, the suction tube is located at the center of the loop electrode and connected to the end of the insulating tube body, and the suction tube and the central hole of the insulating tube body form a suction passage; the cable is electrically connected to the working electrode and the loop electrode. The above structure is also conducive to achieving suction operation and avoiding blockage.

[0042] In this embodiment, at least one wire hole 9 is provided on the side wall of the insulating tube body, a connecting tube 10 is integrally formed at one end of the insulating tube body, an external thread is provided on the outer wall of the connecting tube, and an internal thread is provided on the inner wall of the insulating tube; the suction tube is threadedly connected to the external thread of the connecting tube, and the working electrode is threadedly connected to the internal thread of the insulating tube; through the above structure, the convenience and effectiveness of assembly are improved.

[0043] At the same time, the cable of the working electrode is passed through the wire hole. In addition, in the present embodiment, the working electrode includes a central portion 611, and a plurality of blades 612 with external threads are integrally formed at the edge of the central portion. The end of the blade is integrally formed with a semicircular sheet 613, and the height of the semicircular sheet is greater than the height of the blade; the blade is threadedly connected in the insulating tube, and the limiting plane is positioned against the end face of the semicircular sheet. The working electrode is a cross-shaped electrode. The use of a cross-shaped electrode can generate plasma more stably, improve surgical efficiency, and the plasma generated by the plasma scalpel is uniform and effective.

[0044] Moreover, the edge thickness of the semicircular sheet gradually decreases and forms a blade shape as the distance from the insulating tube increases. The above structure can reduce the area of ​​contact with tissue, and is not easy to adhere to tissue and affect the surgical efficiency, and has strong applicability.

[0045] The utility model has positive effects: the structure of the utility model is reasonably arranged. By means of the working electrode, the loop electrode and the insulating tube body, it can not only effectively, stably and efficiently generate plasma, which is beneficial to improving the surgical efficiency, but also there is a liquid injection gap for injecting physiological saline between the water guide tube and the loop electrode; the suction tube and the central hole of the insulating tube body form a suction path, and it can also effectively realize the liquid injection and suction operations, prevent blockage, the overall structure is simple, the use is safe and reliable, the corresponding operation is more convenient and effective, solve the technical deficiencies of uneven plasma generation and easy blockage of the suction tube in the prior art, and has strong applicability;

[0046] The working electrode includes a central part, and several blades with external threads integrally formed on the edge of the central part. A semi-circular sheet is integrally formed at the end of the blade. The use of the semi-circular sheet is also beneficial to the drainage effect, can make the physiological saline more accurately and effectively transported to the tip of the working electrode, improve the drainage effectiveness and smoothness, and during the operation, the arc-shaped side of the electrode will not cause scratches due to touching the tissue;

[0047] And the middle part of the working electrode is attached to the limiting plane, and the other end of the working electrode extends out of the end of the insulating tube body, which neither occupies the space of the suction tube nor can perform secondary ablation on the inhaled tissue, can prevent the suction tube from being blocked by larger tissues, and improve the drainage effectiveness and smoothness;

[0048] Moreover, the edge thickness of the semi-circular sheet gradually and uniformly decreases with the increase of the distance from the insulating tube body and forms a blade shape, which is beneficial to reducing the area of contact with the tissue, not easily adhering to the tissue and affecting the surgical efficiency, and has strong applicability.

[0049] Embodiment 2

[0050] See Figures 1 to 4 And Figure 7 As shown, this embodiment is basically the same as Embodiment 1, the difference is that: the working electrode is an X-shaped electrode.

[0051] Embodiment 3

[0052] See Figures 1 to 4 And Figure 8 As shown, this embodiment is basically the same as Embodiment 1, the difference is that: the working electrode is a cross-shaped electrode.

[0053] The standard parts used in this embodiment can be directly purchased from the market, and the non-standard structural components described in the specification can also be directly processed according to the existing technical knowledge without any doubt. At the same time, the connection methods of each component adopt the mature conventional means in the prior art, and the machines, parts and equipment all adopt the conventional models in the prior art, so no specific description will be made here.

[0054] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And these obvious changes or modifications derived from the essential spirit of the present utility model still fall within the protection scope of the present utility model.

Claims

1. A plasma surgical blade, comprising a handle, a water conduit disposed at one end of the handle, and an injection tube, a cable and a suction tube disposed in the handle and the water conduit, wherein a blade structure is fixed at the end of the water conduit, characterized in that: The cutter head structure includes a working electrode, an insulating tube body and a return electrode; The end surface of the insulating tube body is a limiting plane, the middle part of the working electrode is attached to the limiting plane, and the other end of the working electrode extends out of the end of the insulating tube body; The loop electrode is sleeved on the outside of the insulating tube and is located on the inside of the water conduit, and the loop electrode and the working electrode are isolated by the insulating tube; An injection gap for injecting physiological saline is provided between the water conduit and the loop electrode; The suction tube is located at the center of the loop electrode and connected to the end of the insulating tube body, and the suction tube and the central hole of the insulating tube body form a suction passage; The cable is electrically connected to the working electrode and the loop electrode.

2. A plasma surgical knife head according to claim 1, characterized in that: At least one wire hole is provided on the side wall of the insulating tube body, a connecting tube is integrally formed at one end of the insulating tube body, an external thread is provided on the outer wall of the connecting tube, and an internal thread is provided on the inner wall of the insulating tube; The suction tube is threadedly connected to the external thread of the connecting tube, and the working electrode is threadedly connected to the internal thread of the insulating tube; The cable of the working electrode is inserted into the wire hole.

3. A plasma surgical knife head according to claim 2, characterized in that: The working electrode comprises a central portion, a plurality of blades with external threads integrally formed at the edge of the central portion, and a semicircular sheet body integrally formed at the end of the blade, and the height of the semicircular sheet body is greater than the height of the blade; The blade is threadedly connected in the insulating tube, and the limiting plane is positioned against the end surface of the semicircular sheet body.

4. A plasma surgical knife head according to claim 3, characterized in that: The working electrode is in the form of a cross electrode, an X-shaped electrode or a rice-shaped electrode.

5. The plasma surgical knife head according to claim 3, characterized in that: The edge thickness of the semicircular sheet body gradually and evenly decreases as the distance from the insulating tube body increases, and forms a blade shape.

6. The plasma surgical knife head according to claim 1, characterized in that: The insulating tube body is a ceramic tube body, an aluminum oxide tube body or a zirconium oxide tube body.

7. The plasma surgical knife head according to claim 1, characterized in that: The working electrode is a tungsten electrode, a platinum-iridium alloy electrode, a titanium electrode or a molybdenum electrode.

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