CN218009941U - Plasma scalpel head and scalpel - Google Patents

Abstract

The utility model provides a plasma surgical knife head and scalpel relates to medical instrument technical field to solve among the prior art problem that drops after the easy long-time loss of head that arouses the electrode, this plasma surgical knife head is including arousing electrode and electrode holder, arouse the electrode and include plate electrode and a plurality of pin, it is a plurality of the pin connect in one side of plate electrode and with plate electrode formula structure as an organic whole the periphery of plate electrode is provided with a plurality of lugs that have the pointed angle and is in be provided with the fretwork hole that has the pointed angle on the plate electrode be provided with the mounting hole on the outer terminal surface of electrode holder, the plate electrode paste lean on in the outer terminal surface of electrode holder, the pin block in the mounting hole. The utility model discloses an excitation electrode joint strength of plasma surgical knife head is high, and the installation position is difficult for receiving the loss, avoids splitting in the use, receives to use longe-lived, increases the security of operation.

Description

Plasma scalpel head and scalpel

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to a plasma surgical knife head and scalpel are related to.

Background

The low-temperature plasma radio frequency technology is characterized in that a 100KHZ ultra-low frequency radio frequency energy excites a medium to generate plasma, electrolyte between a plasma cutter head and a tissue is converted into a plasma thin layer, charged particles in the plasma are accelerated by an electric field and then transfer energy to the tissue, molecular bonds forming cell components in a target tissue are dissociated and decomposed into small molecular gas, and therefore the tissue has multiple functions of cutting, punching, shrinking, hemostasis and the like.

The radio frequency plasma surgery system comprises a host machine, a surgery electrode, a foot controller and a flow controller. The radio frequency plasma operation electrode comprises a cable, a handle, an electrode rod, an excitation electrode and a loop electrode. The excitation electrode and the loop electrode are arranged at the far end of the electrode rod close to the target tissue, and the radio frequency energy is applied through the host machine to realize cutting, ablation, heating and solidification of the tissue. In the operation process, tissues and conductive liquid exist on the outer side of the electrode rod, current returns to the loop electrode from the excitation electrode through the conductive liquid and the tissues, and an electric field of 3000V/CM is generated between the excitation electrode and the loop electrode.

In the working process of the existing electrode rod head, because the discharge process of the excitation electrode easily generates loss at the sharp corner of the excitation electrode, the service life of the excitation electrode can not meet the requirement of some complex operations which need to work for a long time. During the operation, the weak position of excitation electrode root often can appear the disconnection condition, makes to arouse monopole and breaks away from ceramic seat, drops in the patient internal, is difficult for taking out, brings a great deal of inconvenience for the operation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a plasma surgical knife head and scalpel to solve the problem that drops after the easy long-time loss of head that arouses the electrode among the prior art, the utility model discloses a plasma surgical knife head arouses electrode joint strength height, and the installation position is difficult for receiving the loss, avoids splitting in the use, receives to use longe-lived, increases the security of operation.

The utility model provides a pair of plasma surgical knife head, including arousing electrode and electrode holder, arouse the electrode and include plate electrode and a plurality of pin, it is a plurality of the pin connect in one side of plate electrode and with plate electrode formula structure as an organic whole the periphery of electrode plate is provided with a plurality of lugs that have the pointed angle and is in be provided with the fretwork hole that has the pointed angle on the plate electrode be provided with the mounting hole on the outer terminal surface of electrode holder, the plate electrode paste lean on in on the outer terminal surface of electrode holder, the pin card in the mounting hole.

As a preferred scheme of the utility model, the pin with the junction of plate electrode is provided with the arc changeover portion, the pin passes through the arc changeover portion with the avris of plate electrode is connected.

As a preferred scheme of the utility model, a plurality of lugs are followed the periphery of electrode plate evenly sets up, the fretwork hole is polygonized structure.

As an optimized scheme of the utility model, the outer terminal surface of electrode holder is the inclined plane, the pin with contained angle between the plate electrode is beta, beta is more than or equal to 50 degrees and is less than or equal to 70 degrees, the width of pin is b, and 0.2mm is less than or equal to b and is less than or equal to 0.5mm.

As a preferred scheme of the utility model, still include return circuit electrode and insulating skin, return circuit electrode be the pipe form and overlap in the outside of electrode holder, the outer end of electrode holder extends to the outside of return circuit electrode, insulating skin overlap in the outside of return circuit electrode, the outer end of return circuit electrode extends to insulating outer outside.

As a preferred scheme of the utility model, the outer terminal surface of return circuit electrode is the inclined plane, the outer terminal surface of electrode holder with the contained angle between the outer terminal surface of return circuit electrode is alpha, and alpha is less than or equal to 5.

As a preferred scheme of the utility model, the outer terminal surface of return circuit electrode with the outer terminal surface parallel arrangement of electrode holder be provided with the arch on the outer terminal surface of return circuit electrode, the arch for the length that the outer terminal surface of return circuit electrode extends to the outside is c, and 0.5mm is less than or equal to c and is less than or equal to 1.5mm.

As a preferred scheme of the utility model, still including attracting the pipe, attract the pipe set up in the inboard of return circuit electrode and be in attract the pipe with form interface channel between the return circuit electrode, the electrode holder install in attract the outer end of pipe and right interface channel's outer end is sealed, be provided with on the electrode holder with attract the inside passage hole that communicates of pipe, arouse on the electrode fretwork hole with the passage hole corresponds the setting, the pin passes the mounting hole extends to in the interface channel.

The utility model also provides a scalpel, include plasma operation tool bit, still include cable conductor, handle, drainage tube and electrode pole, the electrode pole be hollow structure and its one end with the other end is connected to plasma operation tool bit the handle is connected, the cable conductor with the drainage tube all with the handle is kept away from the one end of electrode pole is connected, just the cable conductor with pin and return circuit electrode are connected, the drainage tube with attract pipe UNICOM.

As a preferred scheme of the utility model, the handle includes the handle shell, handle main part and circuit board, the tail end of handle main part is provided with two connecting holes, the anterior segment of handle main part is provided with the holding chamber, the cable conductor with the drainage tube is respectively through two the connecting hole extends to in the holding chamber and pass through the strengthening rib in the holding intracavity is separated, the circuit board set up in the upside in holding chamber, the cable conductor the pin with return circuit electrode all with the circuit board is connected be provided with control button on the circuit board, the handle shell cover in the outside in holding chamber, the handle shell includes gentle shell and stereoplasm shell, gentle shell corresponds the top of circuit board install in on the stereoplasm shell, button correspondence on the gentle shell set up in control button's top.

Compared with the prior art, the utility model discloses there is following positive effect:

1. the utility model provides a plasma surgical knife head, through including arousing electrode and electrode holder, arouse the electrode and include plate electrode and a plurality of pin, a plurality of pins connect in one side of plate electrode and with plate electrode formula structure as an organic whole, be provided with a plurality of lugs that have the pointed angle and be provided with the fretwork hole that has the pointed angle on the plate electrode in the periphery of electrode plate, be provided with the mounting hole on the outer terminal surface of electrode holder, the plate electrode pastes and leans on the outer terminal surface of electrode holder, the pin card is in the mounting hole. The utility model discloses an excitation electrode of plasma surgical knife head makes the excitation electrode in the course of the work through setting up the lug that has the pointed angle and the fretwork hole that has the pointed angle, and the most strong point that the sharp angle on lug and the fretwork hole arouses as the plasma, loss at first to the pin of electrode is aroused in better protection, avoids the loss of pin department and causes its follow plate electrode fracture, prolongs the life of excitation electrode, increases the security of operation. In addition, the electrode plate and the pins are of an integrated structure, so that the electrode plate and the pins are connected with high strength, the connection strength of the electrode plate and the pins is further increased, the excitation electrode has high stability in the use process, and the requirement of long-time work in the operation process is met.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a plasma scalpel head according to the present invention;

FIG. 2 is an exploded view of the plasma scalpel head of the present invention;

FIG. 3 is a schematic view of the internal structure of the plasma scalpel head of the present invention;

FIG. 4 is a side view of the plasma scalpel head of the present invention;

fig. 5 is a schematic structural view of the excitation electrode of the present invention having triangular hollow holes;

fig. 6 is a schematic structural view of the excitation electrode of the present invention with irregular hollow holes;

fig. 7 is a schematic view illustrating a structure of the present invention in which a plurality of bumps are connected to each other;

fig. 8 is a side view of the excitation electrode of the present invention;

fig. 9 is a schematic structural view when the outer end surface of the electrode holder is parallel to the outer end surface of the loop electrode in the present invention;

fig. 10 is a schematic structural view of a scalpel in the present invention;

fig. 11 is an exploded view of the handle of the present invention.

In the figure: 1. an excitation electrode; 11. an electrode plate; 111. hollowing out holes; 112. a bump; 113. an arc transition section; 12. a pin; 2. an electrode holder; 21. mounting holes; 22. a passage hole; 3. a return electrode; 31. a protrusion; 4. an insulating outer layer; 5. a suction tube; 51. a connecting channel; 6. an electrode rod; 7. a handle; 71. a handle housing; 711. a hard shell; 712. a soft shell; 7121. a button; 72. a handle body; 721. connecting holes; 722. an accommodating cavity; 723. reinforcing ribs; 73. a circuit board; 731. a control key; 8. a cable wire; 9. a drainage tube.

Detailed Description

In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "front", "rear", "head", "tail", and the like refer to orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely for convenience and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Example 1:

the plasma scalpel head provided in this embodiment, as shown in fig. 1-2, includes an excitation electrode 1 and an electrode holder 2, the excitation electrode 1 includes an electrode plate 11 and a plurality of pins 12, the plurality of pins 12 are connected to one side of the electrode plate 11 and integrated with the electrode plate 11, a plurality of protrusions 112 with sharp corners are disposed on the periphery of the electrode plate 11, a hollow hole 111 with sharp corners is disposed on the electrode plate 11, a mounting hole 21 is disposed on an outer end surface of the electrode holder 2, the electrode plate 11 is attached to an outer end surface of the electrode holder, and the pins 12 are clamped in the mounting hole 21. The excitation electrode 1 is formed by cutting an integrated plate, and the pin is formed by bending a strip-shaped plate towards one side of the electrode plate 11.

When the plasma surgical knife head is used, the excitation electrode 1 is placed at a surgical site, the excitation electrode 1 is conducted with the loop electrode by generating voltage on the excitation electrode and taking tissue fluid or physiological saline as a conductive medium, and a plasma layer is formed around the excitation electrode and acts on the surgical site to perform surgical operations such as ablation and cutting. Wherein, the ionic strength that sharp corner department arouses on the excitation electrode 1 is the biggest, the easiest loss, excitation electrode 1 of this embodiment is through setting up lug 112 and the fretwork hole 111 that has the sharp corner, make excitation electrode 1 in the course of the work, the sharp corner on lug 112 and the fretwork hole 111 is as the strongest point that plasma arouses, the first loss, thereby the pin 12 of better protection excitation electrode, avoid the loss of pin 12 department to cause its fracture from plate electrode 11, the life of extension excitation electrode 1, the security of the operation is increased. In addition, the electrode plate 11 and the pins 12 are of an integrated structure, so that the connection between the electrode plate 11 and the pins 12 has high strength, the connection strength between the electrode plate 11 and the pins 12 is further increased, the excitation electrode 1 has high stability in the use process, and the requirement of long-time work in the operation process is met.

Preferably, as shown in fig. 3, an arc transition section 113 is disposed at a connection portion between the pin 12 and the electrode plate 11, the pin 12 is connected to a side of the electrode plate 11 through the arc transition section, which is beneficial to increasing connection strength between the pin 12 and the electrode plate 11, the arc transition section 113 generates a stable plasma layer, the loss degree is small, and the electrode plate 11 is prevented from falling off from the pin 12. And the excitation electrode 1 is made of high-melting-point metal such as tungsten, molybdenum, platinum-iridium alloy and the like, and has better stability in the using process.

Preferably, as shown in fig. 7, the plurality of bumps 112 are uniformly disposed along the circumference of the electrode plate 11. The bumps 112 are connected in a zigzag manner, so that a plurality of sharp corners are formed on the periphery of the electrode plate 11, and high-intensity plasma is released at the sharp corners. The hollow holes 111 are polygonal. As shown in fig. 5, the hollow-out holes 111 are triangular or quadrangular. In addition, the hollow hole 111 may also be a star-shaped structure, or as shown in fig. 6, the hollow hole 111 is a windmill-shaped structure, and the hollow hole 111 has a plurality of sharp corners, so that a strong plasma is formed at the sharp corners, and the cutting effect is good.

Preferably, as shown in fig. 1 and 8, the outer end surface of the electrode holder 2 is an inclined surface, and the included angle between the pin 12 and the electrode plate 11 is β, which is greater than or equal to 50 ° and less than or equal to 70 °, so as to facilitate surgical operation on a focus site.

Specifically, the width of the pin 12 is b, and b is not less than 0.2mm and not more than 0.5mm. As shown in fig. 1, when the arc transition section 113 is disposed on the excitation electrode 1, the width b of the pin 12 is 0.2mm; as shown in fig. 5 to 7, when the arc-shaped transition section 113 is not provided on the excitation electrode 1, the width b of the lead 12 is increased to 0.4mm to 0.5mm to increase the connection strength of the lead 12 and the electrode plate 11.

Preferably, as shown in fig. 1, the plasma surgical knife head of this embodiment further includes a loop electrode 3 and an insulating outer layer 4, the loop electrode 3 is in a circular tube shape and is sleeved outside the electrode holder 2, and the outer end of the electrode holder 2 extends to the outer side of the loop electrode 3. A voltage is generated at the excitation electrode 1, the excitation electrode and the return electrode 3 are conducted through the conductive medium, and the return electrode 3 receives plasma. The insulating outer layer 4 is sleeved on the outer side of the loop electrode 3, the outer end of the loop electrode 3 extends to the outer side of the insulating outer layer 4, and the insulating outer layer 4 forms insulating protection on the outer side of the loop electrode 3.

Preferably, the electrode holder 2 is made of high-temperature-resistant alumina ceramic material, and has good insulating property.

Preferably, the outer end surface of the loop electrode 3 is an inclined surface, and an included angle between the outer end surface of the electrode holder 2 and the outer end surface of the loop electrode 3 is α, where α is not more than 5 °. The outer end of the loop electrode 3 is bent according to the focus position, and the plasma intensity is influenced by the distance between the loop electrode and the excitation electrode, so that the plasma intensity at the shortest end of the distance between the loop electrode and the excitation electrode is enhanced, and the excitation electrode is most rapidly worn. The angle α between the outer end face of the electrode holder 2 and the outer end face of the return electrode 3 determines the shortest path between the electrode plate 11 and the return electrode 3.

As shown in fig. 4, the angle α between the outer end surface of the electrode holder 2 and the outer end surface of the return electrode 3 is 5 °, and the strongest point of plasma is at the lowest end of the electrode plate 11, so that the connection between the pin 12 and the electrode plate 11 can be avoided from the strongest point of plasma on the electrode plate 11 according to the angle between the outer end surface of the electrode holder 2 and the outer end surface of the return electrode 3, and the sharp corner of the bump 112 at the lower side of the electrode plate 11 extends to the lower side of the connection between the pin 12 and the electrode plate 11.

Specifically, as shown in fig. 2, three pins 12 are provided, three pins 12 are connected to the periphery of the electrode plate 11, and two protrusions 112 extending upward and having a peak shape are provided on the upper side of the electrode plate 11. The two pins 12 on the upper side are connected to the lower side of the peak-shaped bump 112, so that the peak-shaped bump 112 protects the pins 12.

In another embodiment, as shown in fig. 9, the outer end surface of the loop electrode 3 is parallel to the outer end surface of the electrode holder 2, a protrusion 31 is provided on the outer end surface of the loop electrode 3, the protrusion 31 has a length c extending outward from the outer end surface of the loop electrode 3, where c is 0.5mm or more and 1.5mm or less, so that different loop electrodes 3 and electrode holders 2 are used according to the focal position, and the side of the electrode plate 11 closest to the protrusion 31 has the highest plasma intensity.

Preferably, the plasma surgical knife head of the embodiment further includes a suction tube 5, the suction tube 5 is disposed inside the loop electrode 3 and forms a connection channel 51 between the suction tube 5 and the loop electrode 3, the electrode holder 2 is mounted at the outer end of the suction tube 5 and seals the outer end of the connection channel 51, a channel hole 22 communicating with the inside of the suction tube 5 is disposed on the electrode holder 2, the hollow hole 111 on the excitation electrode 1 is disposed corresponding to the channel hole 22, and the pin 12 extends into the connection channel 51 through the mounting hole 21. The pins 12 are connected to wires, which are arranged through the connection channels 51.

Specifically, attract pipe 5 and electric suction machine to be connected, form the negative pressure in attracting pipe 5, make plasma operation tool bit can attract the operation waste liquid through attracting pipe 5 through hollow hole 111 on excitation electrode 1 in the operation process outside, form a good operation fluid's circulation system, the effectual field of vision definition and the definition of scope that has improved among the operation process, a superior operation environment is brought for the operation doctor, avoid bringing the maloperation because of the field of vision is unclear, the reciprocal operation time that shifts out external washing mirror of scope among the operation process that has significantly reduced simultaneously, the efficiency of operation has been shown to be promoted, the operation risk has been reduced.

Example 2

The embodiment provides a scalpel, including the plasma scalpel head in embodiment 1, still include cable conductor 8, handle 7, drainage tube 9 and electrode rod 6, electrode rod 6 is hollow structure and its one end is connected other end handle 7 with the plasma scalpel head and is connected, and cable conductor 8 and drainage tube 9 all are kept away from the one end of electrode rod 6 with handle 7 and are connected, and cable conductor 8 is connected with pin 12 and return circuit electrode 3, and drainage tube 9 and suction tube 5 UNICOM. The pin 12 and the return electrode 3 extend through the electrode shaft 6 into the handle 7 by means of wires.

When the scalpel of this embodiment is using, handheld handle 7 sends into the focus position with the plasma tool bit through electrode rod 6, carries out the operation, and convenient to use improves operation efficiency.

Preferably, the handle 7 comprises a handle housing 71, a handle body 72 and a circuit board 73, two connecting holes 721 are provided at the tail end of the handle body 72, a receiving cavity 722 is provided at the front section of the handle body 72, and the cable 8 and the drainage tube 9 respectively extend into the receiving cavity 722 through the two connecting holes 721 and are separated by a reinforcing rib 723 in the receiving cavity 722, so as to facilitate installation. The circuit board 73 is arranged on the upper side of the accommodating cavity 722, the cable 8, the pin 12 and the loop electrode 3 are all connected with the circuit board 73, a control key 731 is arranged on the circuit board 73, the handle shell 71 is sleeved on the outer side of the accommodating cavity 722, the handle shell 71 comprises a flexible shell 712 and a hard shell 711, the flexible shell 712 is arranged on the hard shell 711 corresponding to the upper part of the circuit board 73, and a button 7121 on the flexible shell 712 is correspondingly arranged above the control key 731. Both the pin 12 and the return electrode 3 are connected to the circuit board 73 by wires passing through the connecting channel 51 and the inside of the electrode rod 6.

Specifically, be provided with three button 7121 on the flexible shell 712, flexible shell 712 adopts monolithic structure, prevents inside outside liquid gets into the handle, and flexible shell 712's the position of setting accords with ergonomic design, convenient operation avoids the spurious triggering. Pressing button 7121 deforms button 7121 to activate control keys 731 on corresponding circuit board 73. The button 7121 has three functions of cutting, coagulating and gear adjusting, when the button is pressed, the circuit board is conducted to send a signal to the host, the radio-frequency voltage of the host forms radio-frequency current between the exciting electrode and the return electrode through the conductive liquid, plasma is generated on the exciting electrode, and the cutting and coagulating are carried out on the focus position. The button 7121 surface of the flexible shell 712 is printed with different colors, yellow for cutting function, blue for coagulation function, white for shifting function, and the color of the flexible shell 712 is black. The flexible shell 712 and the hard shell 711 are connected in a snap-fit manner and are integrally assembled. The button 7121 arranged on the handle enables an operator to control the operation mode of the scalpel through the hand, so that the operation of a doctor is facilitated, the control is faster, and the operation efficiency of the operation is improved.

The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can make several modifications and improvements without departing from the inventive concept, and all shall be covered by the protection scope of the present invention.

Claims (10)

1. The utility model provides a plasma surgical knife head, its characterized in that, includes excitation electrode (1) and electrode holder (2), excitation electrode (1) includes electrode board (11) and a plurality of pin (12), and is a plurality of pin (12) connect in one side of electrode board (11) and with electrode board (11) formula structure as an organic whole the periphery of electrode board (11) is provided with a plurality of lugs (112) that have the pointed angle and is in be provided with fretwork hole (111) that have the pointed angle on electrode board (11) be provided with mounting hole (21) on the outer terminal surface of electrode holder (2), electrode board (11) paste lean on in on the outer terminal surface of electrode holder, pin (12) block in mounting hole (21).

2. The plasma surgical cutter according to claim 1, wherein the connection between the pin (12) and the electrode plate (11) is provided with an arc-shaped transition section (113), and the pin (12) is connected with the side of the electrode plate (11) through the arc-shaped transition section.

3. The plasma surgical knife head according to claim 1, characterized in that a plurality of projections (112) are uniformly arranged along the periphery of the electrode plate (11), and the hollow-out holes (111) are polygonal.

4. The plasma surgical knife head according to claim 1, characterized in that the outer end surface of the electrode holder (2) is an inclined surface, the included angle between the pin (12) and the electrode plate (11) is β, β is greater than or equal to 50 ° and less than or equal to 70 °, the width of the pin (12) is b, and b is greater than or equal to 0.2mm and less than or equal to 0.5mm.

5. The plasma surgical knife head according to claim 1, characterized by further comprising a loop electrode (3) and an insulating outer layer (4), wherein the loop electrode (3) is in a circular tube shape and is sleeved outside the electrode holder (2), the outer end of the electrode holder (2) extends to the outer side of the loop electrode (3), the insulating outer layer (4) is sleeved outside the loop electrode (3), and the outer end of the loop electrode (3) extends to the outer side of the insulating outer layer (4).

6. The plasma surgical knife head according to claim 5, characterized in that the outer end surface of the loop electrode (3) is an inclined surface, the included angle between the outer end surface of the electrode seat (2) and the outer end surface of the loop electrode (3) is α, and α is less than or equal to 5 °.

7. The plasma surgical knife head according to claim 5, characterized in that the outer end face of the loop electrode (3) is arranged in parallel with the outer end face of the electrode holder (2), a protrusion (31) is arranged on the outer end face of the loop electrode (3), the protrusion (31) extends outwards relative to the outer end face of the loop electrode (3) for a length c, and c is greater than or equal to 0.5mm and less than or equal to 1.5mm.

8. The plasma surgical knife head according to claim 5, characterized by further comprising a suction tube (5), wherein the suction tube (5) is arranged inside the loop electrode (3) and forms a connection channel (51) between the suction tube (5) and the loop electrode (3), the electrode holder (2) is mounted at the outer end of the suction tube (5) and seals the outer end of the connection channel (51), a channel hole (22) communicated with the inside of the suction tube (5) is arranged on the electrode holder (2), the hollowed-out hole (111) on the excitation electrode (1) is arranged corresponding to the channel hole (22), and the pin (12) extends into the connection channel (51) through the mounting hole (21).

9. A scalpel, characterized in that, includes the plasma scalpel head of any one of claims 1-8, still includes cable conductor (8), handle (7), drainage tube (9) and electrode pole (6), electrode pole (6) be hollow structure and its one end with the other end is connected to the plasma scalpel head handle (7) are connected, cable conductor (8) with drainage tube (9) all with handle (7) are kept away from the one end of electrode pole (6) is connected, just cable conductor (8) with pin (12) and return circuit electrode (3) are connected, drainage tube (9) with attract pipe (5) UNICOM.

10. A scalpel as claimed in claim 9, wherein the handle (7) comprises a handle housing (71), a handle body (72) and a circuit board (73), the handle body (72) is provided with two connecting holes (721) at the rear end, the handle body (72) is provided with a receiving cavity (722) at the front section, the cable (8) and the drainage tube (9) extend into the receiving cavity (722) through the two connecting holes (721) and are separated by a reinforcing rib (723) in the receiving cavity (722), the circuit board (73) is disposed at the upper side of the receiving cavity (722), the cable (8), the pin (12) and the return electrode (3) are all connected to the circuit board (73), a control button (731) is disposed on the circuit board (73), the handle housing (71) is sleeved outside the receiving cavity (722), the handle housing (71) comprises a flexible shell (712) and a hard shell (711), the flexible shell (712) is mounted on the circuit board (73) above the button (731), and the control button (71 (21) is disposed above the flexible shell (711).

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