WO2012068735A1

WO2012068735A1 - Surgical scalpel for electrosurgery and electrosurgical system

Info

Publication number: WO2012068735A1
Application number: PCT/CN2010/079139
Authority: WO
Inventors: 陈孝平; 李农; 肖震宇; 杨振坤
Original assignee: Chen Xiaoping; Li Nong; Xiao Zhenyu; Yang Zhenkun
Priority date: 2010-11-25
Filing date: 2010-11-25
Publication date: 2012-05-31

Abstract

A surgical scalpel for electrosurgery and an electrosurgical system.The surgical scalpel includes a scalpel handle (40) and a scalpel head (41) mounted on the scalpel handle (40) detachably. The scalpel head (41) includes an external conductor (413), an internal conductor (411), an insulating medium (410), a positive electrode (412) and a water supply pipe (419).An arch shaped notch (4132) is provided at the external end of the external conductor (413). An upper external electrode (4133) and a lower external electrode (4131) are provided at the two ends of the arch shaped notch (4132), respectively. The insulating medium (410) and the internal conductor (411) are fixedly mounted inside the external conductor (413). The insulating medium (410) is located between the external conductor (413) and the internal conductor (411).The positive electrode (412) is provided on the external conductor (413) or the internal conductor (411). The water supply pipe (419) is provided in the external conductor (413) or in the insulating medium (410).The invention makes use of the advantages of a radio frequency electrosurgical scalpel, a medical water jet scalpel, and a microwave surgical scalpel.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of medical devices, and in particular to a scalpel and an electrosurgical system for electrosurgery. BACKGROUND OF THE INVENTION Human tissue separation, cutting and hemostasis are eternal themes in surgical procedures. Due to the different working principles of electrosurgical instruments, scalpels for surgical operations mainly include: radio frequency electric knives, microwave scalpels, and medical waterjets. They only have an advantage in one of them, and combining them in a scalpel is the mainstream of today's surgical equipment field. Radiofrequency surgery is a non-invasive method of cutting soft tissue. The 4MHz radio frequency wave emitted by the surgical electrode generates resistance through the tissue, causing the contacted cells to heat themselves. The heat in the RF wave path causes the water molecules in the cell to oscillate to evaporate and decompose the cells, and the tissue is cut as a sharp blade to achieve a non-invasive cut of the tissue. Therefore, the superiority of the radio frequency electric knife is the non-invasive cutting of the tissue, and the non-invasive cutting makes the tissue heal without fiber shrinkage scar. Qibo belongs to the ultra-high frequency range of 300MHz~30,000MHz, and has outstanding coagulation and hemostasis effect when applied to surgery. The front end of the cutter head of the microwave scalpel can be directed to emit electromagnetic waves, which act on the dipole molecules between the tissues, so that the dipole molecules generate rotational oscillations, and the heat generated thereby can instantly denature and solidify the tissue proteins, and the denatured protein chains Adhesion forms a new hinged structure that closes the larger end of the blood vessel. The medical waterjet pump pumps the sterile physiological saline through a high-pressure pump and sprays it through a small nozzle on the handle. Due to the action of the high-pressure water jet, the gap of the human tissue structure expands, and the softer substantive tissue is under a lower pressure. It can be cut off, and under the same pressure, the tough tissue with blood vessels, secretory tubes, lymphatic vessels and nerves can be swept away and completely preserved or treated separately. By using the pressure difference between the two, by adjusting the water flow pressure, the different toughness and elastic structure can be selectively dissected. The biggest feature of the medical waterjet is that it can selectively cut the parenchyma to maximize the protection of specific tissues such as blood vessels, bile ducts, lymphatic vessels and nerves, and the surgical field is clear, which can shorten the operation time and reduce the amount of intraoperative blood loss. The waterjet does not generate heat, so it does not cause the surgery to produce Thermal damage to tissue. Therefore, the radio frequency electrosurgical knife and the medical water jet knife in the prior art have poor effect on the tissue hemostasis due to their special action principle, which makes it impossible to close the large blood vessel end, and the Qibo scalpel has good coagulation and hemostasis effect. However, there are problems with unsatisfactory surgical cutting. SUMMARY OF THE INVENTION The present invention is directed to a scalpel and electrosurgical system for electrosurgery to at least solve the problem that the prior art radio frequency electrosurgical knife and medical water jet cannot close the large blood vessel end, and the ultrasonic scalpel Unsatisfactory problems in surgical cutting. According to an aspect of the invention, a scalpel for electrosurgery is provided, comprising: a scalpel handle and a scalpel head detachably mounted on the scalpel handle; the scalpel head comprising: an outer conductor, the outer The end is provided with an arc-shaped slit, and the two ends of the arc-shaped slit are an upper outer electrode and a lower outer electrode respectively; an insulating medium and an inner conductor which are sequentially fixed inside the outer conductor, wherein the insulating medium is located between the outer conductor and the inner conductor, The inner conductor is used for releasing the microwave signal for surgical hemostasis; and the positive electrode is disposed on the outer conductor or the inner conductor for releasing the radio frequency signal for surgical tissue cutting; wherein the outer conductor or the insulating medium is provided with a water pipe for water delivery The tube is used to output physiological saline for tissue separation and/or cooling. Further, the outer conductor is provided with a push-pull member for extending or retracting the positive electrode or the inner conductor of the scalpel head, and/or for controlling the output of the physiological saline. Further, the front end of the inner conductor is flat, the front end is an arc-shaped rigid metal material, and the outer layer is provided with an anti-blocking coating; the upper outer electrode, the lower outer electrode, and the front end of the inner conductor and the front end of the insulating medium 3 large separation is 0 ~ 9 mm. Further, the front section of the inner conductor and the outer conductor is inclined to one side at the same angle from the bottom end of the arcuate slit, and the angle b with the center line of the scalpel head is zero. Or 15. ~ 45. . Further, a finger switch is disposed on the surgical handle, wherein the fingerprint switch is used to control the output of the microwave signal, the radio frequency signal, and/or the physiological saline. Further, the tail of the surgical handle is provided with a joint, wherein the joint is electrically connected to the scalpel by a transmission line passing through the shank for inputting microwave signals and/or radio frequency signals to the scalpel. According to another aspect of the present invention, there is also provided an electrosurgical system comprising: Scalpel. Further, in the electrosurgical system described above, further comprising: an generating unit for generating a radio frequency signal, a microwave signal, a direct current signal, and/or a water pressure for driving the physiological saline required for the operation; and a control unit, It is electrically connected to the electrical signal generating unit, for information feedback of the electrosurgical system, and for controlling the output power of the radio frequency signal and the microwave signal and/or controlling the water pressure of the physiological saline; the synthesizer, the generating unit and the control The unit is electrically connected, and is configured to synthesize the radio frequency signal, the microwave signal, and/or the DC signal generated by the generating unit without interference, and transmit the synthesized signal to the scalpel through the transmission cable. Further, the generating unit comprises: an RF generator for generating a radio frequency signal; a microwave generator for generating a microwave signal; a DC generator for generating a DC signal; and a water pressure generator for generating a water pressure. Further, the synthesizer comprises: an RF branch electrically connected to the RF generator for transmitting the RF signal to the output port of the synthesizer; and a microwave branch electrically connected to the microwave generator for transmitting the microwave signal To the output port; a DC branch, which is electrically connected to the DC generator for transmitting a DC signal to the output port. In the present invention, the functions of the three scalpels are effectively integrated into a 4 bar scalpel by using the special working principle of the radio frequency electric knife, the medical water jet and the ultrasonic scalpel, and the medical water knife is realized. The function of tissue separation and cooling and the function of non-invasive tissue cutting of radio frequency electrosurgical instrument also realize the function of microwave scalpel to firmly close larger blood vessels and effectively solidify and hemostasis the tissue, and achieve the advantages of these three surgical instruments. Complementary effect. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawing:

2 is a cross-sectional view showing a scalpel head according to an embodiment of the present invention; FIG. 3 is a schematic structural view showing a front end of a scalpel head according to an embodiment of the present invention; FIG. 4 is a view showing an embodiment of the present invention; Schematic diagram of an electrosurgical system; Figure 5 is a block diagram showing the generation unit in the electrosurgical system according to a preferred embodiment of the present invention; Figure 6 is a circuit diagram of the synthesizer in the electrosurgical system of a preferred embodiment of the present invention; A circuit diagram of a synthesizer in an electrosurgical system in accordance with another preferred embodiment of the present invention is shown. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings in conjunction with the embodiments.

2 shows a cross-sectional view of a scalpel head according to an embodiment of the present invention, and FIG. 3 shows a schematic structural view of a front end of a scalpel head according to an embodiment of the present invention. As shown in FIG. 1, the scalpel includes: a scalpel handle 40 and a scalpel head 41 detachably mounted on the scalpel handle 40. In practice, the scalpel head 41 can be removably mounted over the scalpel handle 40 by a lock nut 415. Wherein, as shown in FIG. 2 and FIG. 3, the scalpel head 41 further includes: an outer conductor 413, an insulating medium 410, an inner conductor 411, and a positive electrode 412, and the following connections to the various components in the scalpel head 41 The relationship and function are described in detail. As shown in FIG. 2 and FIG. 3, the outer conductor 413 extends along the longitudinal direction of the cutter head 41 in an elongated cylindrical shape, and the outer end thereof is provided with an arc-shaped slit 4132, and the two ends of the arc-shaped slit 4132 are respectively upper and outer electrodes. 4133 and the fourth electrode 4131; the upper electrode 4133 and the fourth electrode 4131 form a start-up emission field between the inner conductor 411 and the inner conductor 411. The insulating medium 410 and the inner conductor 411 are sequentially fixed inside the outer conductor 413, wherein the insulating medium 410 is located between the inner conductor 411 and the outer conductor 413, the inner conductor 411 is used for releasing microwave signals for surgical hemostasis; and the positive electrode 412 is disposed at the outer conductor 413 or the inner conductor 411, and the positive electrode 412 is used for releasing the radio frequency signal for surgical tissue cutting; wherein the insulating medium 410 or the outer conductor 413 is provided with a water pipe 419 for outputting a pressure of 0 ~ 10 MPa. The saline is subjected to tissue separation and/or cooling. The outer conductor 413 and the inner conductor 411 may form an electrical circuit during actual surgical implementation. In the embodiment of the scalpel as shown in FIGS. 1 and 2, the water delivery pipe 419 is disposed outside the outer conductor 413, and similarly, the water delivery pipe 419 may be disposed inside the outer conductor 413. In addition, in practical applications, the water delivery pipe 419 may be metallic or non-metallic. Thus, in the scalpel of the embodiment shown in FIGS. 1 to 3, the functions of the three types of scalpels are effectively integrated into one handle by using the special working principle of the radio frequency electric knife, the medical water jet and the ultrasonic scalpel. In the operation knife, the function of tissue separation and cooling of the medical waterjet and the function of the non-invasive tissue cutting of the radio frequency electrosurgical knife are realized, and the microwave scalpel can firmly close the large blood vessel and effectively solidify the tissue to stop bleeding. The function achieves the complementary effect of the advantages of these three surgical instruments. Therefore, the scalpel of this embodiment solves the problem that the prior art radio frequency electric knife and the medical water knife cannot close the large blood vessel broken end, and the ultrasonic wave scalpel is not ideal in surgical cutting. As shown in FIGS. 1 to 3, the outer conductor 413 is provided with a push-pull member 414 for allowing the positive electrode 412 to extend or retract into the outer conductor 413 or the inner conductor 411. In practical applications, the push-pull member 414 may be non- Metal push-pull ring. The tail end of the positive electrode 412 (specifically, the RF needle) is fixed in the push-pull member 414. Thus, the user can conveniently move back and forth by the operation 4 of the dancing member 414 when the positive electrode 412 is needed, and the positive electrode 412 is used. 4 The outer conductor 413 or the inner conductor 411 is danced, and when the positive electrode 412 is not required to be used, it is retracted into the outer conductor 413 or the inner conductor 411. In practical applications, the positive electrode 412 on the scalpel head 41 in the scalpel as shown in FIGS. 1 and 2 may be a tetra-electrode (also referred to as radio frequency 40), which can quickly achieve tissue cutting and Minimize tissue damage. Thus, when a scalpel is used, since the inner conductor on the scalpel head is used to emit a microwave signal, the needle electrode is used to emit a radio frequency signal, and the push-pull switch is used to control the extension and retraction of the needle electrode. When the RF signal is needed to cut the tissue, the user can use the needle electrode to cut the tissue using the tip of the needle electrode. When the tissue needs to be hemostasis, the needle electrode can be indented to stop the blood using the microwave signal. Moreover, when the needle electrode is used to cut the tissue, the output microwave output can also be controlled to achieve simultaneous cutting and hemostasis. Referring to Figures 1 to 3, in order for the doctor to have a better field of view and reduce the retention of solidified tissue between the inner and outer conductors, the insulating medium 410 and the arcuate slits 4132 on both sides of the outer conductor 413 are also designed as U-shaped arcs. Surface structure. As shown in FIG. 3, the tip line of the upper electrode 4133 and the fourth electrode 4131 forms an angle a with the vertical plane of the center line of the scalpel head, and the angle of a is 0 to 60. . The front section of the upper and outer electrodes is shorter than the inner conductor. Referring to Figures 1 to 3, the front portion of the inner conductor 411 is flat and has a curved front end of a rigid metallic material (also referred to as a front end blade) which can be used to cut tissue. The outer layer of the inner conductor 411 is provided with an anti-blocking coating to prevent tissue from sticking to the inner conductor 411. The inner conductor 411 can maximize the release signal. In addition, a rear end blade 4131 may be provided on the outer conductor 413 of the scalpel head 41. Thus, the user can flexibly select the curved rigid metal material or the trailing end blade 4131 using the front end of the inner conductor for tissue separation and cutting. As shown in FIG. 2, in the above scalpel, since the water delivery pipe 419 on the scalpel head 41 has a hollow structure, it is obvious that the front end thereof is provided with a water outlet hole 4192 (also referred to as a water outlet;), and the rear end is provided with a water inlet hole. 4190 (also called inlet), the water pipeline is connected to the inlet hole 4190 and the outlet hole (also called the outlet) 4192. In use, a sterile physiological saline having a pressure of 0 to 10 MPa can be introduced into the water inlet hole 4190 through a high-pressure hose, and ejected from the water outlet hole 4192 via a water delivery pipe to locally generate a sufficient pressure to thereby cut the tissue. purpose. The ejection pressure of the sprayed physiological saline can be artificially controlled, and the sterile physiological saline is a medium that produces a cutting action. Pressure saline has the following two functions. One is the separation function, which separates the interface between the tumor and the surrounding structure. It is mostly used for the hard tissue of the tumor. The water flow points to the interface between the tumor and the surrounding structure, or slightly to the tumor side. Or the separation of the force reflected by the water flow; the second is to reduce the tissue damage function. Under the microwave working state, the physiological saline drops reduce the temperature of the solidified tissue, avoid the crusting of the tissue, and can effectively reduce the tissue damage. Thus, as shown in Figures 1 and 2, the push-pull member 414 provided on the outer conductor 413 may have another function, when a combination of microwave signal is used alone for tissue hemostasis separation and tissue cooling using low water pressure, surgery The water inlet pipe on the rear water inlet hole 4190 of the water pipe 419 on the cutter head 41 is designed as a hose, so that the user can simply move through the front and rear movement of the push-pull ring 414 through the physical deformation of the water inlet hose. The output and the cut-off output of the physiological saline of the water outlet 4192 of the water delivery pipe 419 are controlled, and complicated electrical connection control is not required, which reduces the cost of the scalpel. As shown in FIG. 3, in order to allow the doctor to have a better field of view during the operation of the surgery, the front ends of the inner conductor 411 and the outer conductor 413 may be inclined to one side at the same angle from the bottom end of the above-mentioned arcuate slit. The angle b between the center line of the scalpel head and the scalpel head can be zero. Or 15. ~ 45. . The size of the angle of inclination needs to be determined according to the characteristics of the surgery required and the surgeon's surgical habits.

As shown in FIG. 1 to FIG. 3, the distance between the front end of the upper electrode 4133, the fourth electrode 4131, and the inner conductor 411 and the front end of the insulating medium 410 may be 0 to 9 mm. The distance is determined according to the output frequency of the microwave signal released by the surgical blade 41, the standing wave ratio at the time of microwave signal output, the diameter of the scalpel head, and the doctor's requirement for the hemostasis of the scalpel head. The thinner the diameter of the cutter head, the shorter the distance, and the requirement of the standing wave ratio at the time of microwave signal output. When the distance is 0, the intermediate insulating medium 410 can be changed to a ceramic structure. Therefore, the upper outer electrode 4133, the ceramic insulating medium 410, the inner conductor 411, and the lower outer electrode 4131 can be integrally processed into a curved blade shape. In this way, rapid cutting, separation and hemostasis can be achieved for surgery that does not require high hemostasis. As shown in FIG. 1, a shank 418 (also referred to as a signal adapter) for outputting a microwave signal and/or a radio frequency signal to the scalpel head 41 is disposed on the tail of the scalpel handle 40, and the joint 418 is worn through The transmission line through the scalpel 40 is electrically connected to the scalpel head 41. Obviously, the connector 418 can be connected by a cable or the like to a device that can generate the microwave signal and/or radio frequency signal described above to provide the desired microwave signal and/or radio frequency signal to the scalpel head. In addition, as shown in FIG. 1, a finger switch 417 can also be disposed on the surgical handle 40, which can be used to control the output of microwave signals and/or radio frequency signals and/or medical saline. The user can conveniently control the output or stop the output of the microwave signal and/or the radio frequency signal and/or the medical saline output through the operation of the fingerprint switch 417 according to his own needs. 4 shows a block diagram of an electrosurgical system including the above-described scalpel 4 as shown in FIGS. 1 to 3 in accordance with an embodiment of the present invention, so that radio frequency signals can be simultaneously used without Damaged tissue cutting, tissue coagulation and hemostasis using microwave signals, and tissue separation and/or cooling using sterile physiological saline, thereby achieving the complementary advantages of the three surgical instruments of radio frequency electrosurgical knife, medical water jet and wave scalpel. As shown in FIG. 4, the electrosurgical system may further include: an generating unit 1, a control unit 2, and a synthesizer 3, wherein: the generating unit 1 is configured to generate a radio frequency signal, a microwave signal, and a radio signal required for the operation. a DC signal and/or a water pressure of a physiological saline used to drive the output of the scalpel; a control unit 2 electrically coupled to the generating unit 1 for information feedback of the electrosurgical system and for controlling radio frequency signals and/or microwave signals Output power and/or magnitude of water pressure for controlling water pressure physiological saline; synthesizer 3 electrically coupled to generating unit 1 and control unit 2 for use in generating radio frequency signals, microwave signals, and/or direct current generated by generating unit 1. The signals are synthesized without interference, and the synthesized signals are transmitted through a transmission cable to the scalpel 4 as shown in FIGS. 1 to 3. In the present embodiment, the radio frequency signal and/or the microwave signal generated by the generating unit 1 are transmitted to the scalpel through the synthesizer, so that the scalpel can use the radio frequency signal for rapid cutting and/or use. The Qibo signal is used for coagulation and hemostasis. At the same time, it can also use the RF signal and the oscillating signal to cut and stop the blood. This can reduce the blood loss and blood transfusion of the patient while shortening the operation time. Thereby, the possibility of complications and the cost of surgery are reduced, and the effect of quick cutting speed, good hemostasis effect, safe and convenient operation is achieved. With the electrosurgical system of this embodiment, the prior art radio frequency electrosurgical knife and medical water jet can not close the large blood vessel end, and the ultrasonic wave scalpel is not ideal for surgical cutting. Obviously, the scalpel as shown in FIGS. 1 to 3 is electrically connected to the output port of the synthesizer 3 through its interface 418 through a transmission cable, so that the synthesizer can input the synthesized signal to the scalpel 4 The cutter head 41. As shown in FIG. 5, in practical applications, in the above electrosurgical system, the generating unit 1 may include: a radio frequency generator 11 for generating a radio frequency signal; a microwave generator 12 for generating a microwave signal; a DC generator 13 for generating a DC signal; and a water pressure generator 14 for generating the above water pressure. In addition to J3⁄4, in practical applications, the output power and/or control of the RF signal and/or microwave signal output by the above control unit 2 can be controlled by means of a (έρ step) switch 5 as shown in FIG. 4 or a manual switch mode. The on and off of the physiological saline output to achieve the effects of tissue separation, hemostasis, and cutting. Wherein, in practical application, the water pressure generator 14 can be a high pressure pump. In practical applications, the finger switch 417 on the scalpel 40 can also be used to control the operating state of the water pressure generator 14, and when the scalpel head is required to output sterile saline, the finger switch 417 is operated. The water pressure generator 14 is caused to operate, and conversely, when the scalpel head is not required to output sterile physiological saline, the finger switch 417 is operated to stop the water pressure generator 14 from operating. The working principle of the water pressure generator 14 is: a high-pressure pump driven by a motor pumps the sterile physiological saline at a pressure of 0 to 10 MPa, and is input through a high-pressure hose to a small nozzle on the scalpel head (ie, the scalpel head). The water outlet hole 4192 of the water delivery pipe 419 is sprayed to generate a sufficient pressure locally to achieve the purpose of cutting the structure and the suspected temperature. The ejection pressure of the nozzle on the scalpel head can be artificially controlled, and the sterile physiological saline is the medium that produces the cutting action. Pressure saline has the following two functions. One is the separation function, which separates the interface between the tumor and the surrounding structure. It is mostly used for the hard tissue of the tumor. The water flow points to the interface between the tumor and the surrounding structure, or slightly to the tumor side. Or the separation of the force reflected by the water flow, and the second is to reduce the tissue damage function. Under the microwave working state, the saline dripping drops the temperature of the suspected tissue, avoiding tissue scarring, and effectively reducing tissue damage. 6 is a schematic view of a synthesizer in an electrosurgical system according to a preferred embodiment of the present invention. As shown in FIG. 6, due to the action of the oscillating transmission belts Z3 and Z4, the microwave signal can only pass through the capacitor C1. The output of the synthesizer is transmitted; after the RF signal passes through the capacitor C2, it is blocked by the magnetic beads B1 and C1, and can only be transmitted to the output of the synthesizer; the DC DC signal is blocked by the capacitors Cl, C2, C3, and only It can be transmitted to the output of the synthesizer; therefore, the synthesized output of each of the three signals can be realized without interfering with each other. As shown in Figure 6, it is also possible to replace the capacitor with a series resonance of capacitor C1' and inductor L1'.

C1, the resonant frequency of the series resonance is the frequency of the microwave signal, when resonance occurs, the capacitance The impedance of CI' and the inductor LI' in series is zero. At this time, only the microwave signal can pass, and the RF signal cannot propagate in the direction of the microwave input. As shown in FIG. 6, the capacitor C1 can also be replaced by a parallel resonance composed of a capacitor C1" and an inductor L1". The resonant frequency of the parallel resonance is the frequency of the radio frequency signal. When resonance occurs, the capacitor C1" and the inductor L1" The impedance of the parallel connection is infinite, which can block the transmission of the RF signal to the direction of the microwave input. Figure 7 is a schematic view of a synthesizer in an electrosurgical system of another preferred embodiment of the present invention. Since the branch consisting of inductance and capacitance between point M and point N, the signal of the start-up wave is at M. The point can only be transmitted to the output of the synthesizer; after passing through the capacitor C6, the RF signal is blocked by the inductor L6 and the capacitor C1 and can only be transmitted to the output of the synthesizer; the DC DC signal is blocked by the capacitors C7, C6, C3. It can also only be transmitted to the output of the synthesizer. Therefore, it is also possible to realize the respective composite outputs of the signals without interfering with each other. In the electrosurgical system described above, the method further includes: a feedback tissue negative electrode placed on the body of the patient, the feedback tissue negative electrode and the positive electrode 412 on the scalpel head 41 can pass through the scalpel head 41 The conductor 411 and the outer conductor 413, the transmission line, the synthesizer 3, and the radio frequency signal generator 11 form an electrical circuit. The DC signal from the DC generator 13 and passing through the combiner 3 detects the impedance of the body tissue and feeds back the detected impedance information to the control unit 2, thus ensuring the safe use of the system. In the scalpel and electrosurgical system of the above embodiment, the scalpel head 41 can measure the impedance of the human body tissue under the microwave working state by the DC signal established between the inner conductor 411, the outer conductor 413 and the human body tissue. information. It is worth noting here that in the scalpel and electrosurgical system of the above embodiment, the RF signal may range from 100K to 100MHz, more preferably 470KHz and 4MHz; ^ The range of the signal can be The values are 300M to 10GHz, and more preferred values are 433MHz, 915MHz and 2450MHz. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

A scalpel for electrosurgery, comprising:

a surgical handle (40) and a surgical head (41) removably mounted on the surgical handle (40);

The scalpel head (41) includes:

The outer conductor (413) has an outer end provided with an arcuate slit (4132), and the two ends of the arcuate slit (4132) are divided into an outer electrode (4133) and an outer electrode (4131);

An insulating medium (410) and an inner conductor (411) fixed in sequence inside the outer conductor (413), wherein the insulating medium is located between the outer conductor and the inner conductor, the inner conductor ( 411) for releasing the start signal for surgical hemostasis;

a positive electrode (412) disposed on the outer conductor (413) or the inner conductor (411) for releasing radio frequency signals for surgical tissue cutting;

Wherein, the water pipe (419) is disposed on the outer conductor (413) or the insulating medium (410), and the water pipe (419) is used for outputting physiological saline for tissue separation and/or cooling.

The scalpel according to claim 1, wherein the outer conductor (413) is provided with four dancing members (414), and the four dancing members (414) are for making the positive electrode (412) extending or retracting the outer conductor (413) or the inner conductor of the scalpel head (41)

(411), and/or for controlling the output of the physiological saline.

3. The scalpel according to claim 1, wherein

The front end of the inner conductor (411) is flat, the front end of which is a curved rigid metal material, and the outer layer is provided with an anti-blocking coating;

The front ends of the upper outer electrode (4133), the lower outer electrode (4131), and the inner conductor (411) are separated from the front end of the insulating medium (410) by 0 to 9 mm.

4. The scalpel according to claim 1, wherein the inner conductor (411) and the front portion of the outer conductor (413) are oriented at the same angle from the bottom end of the curved slit. The side is inclined, and the angle b formed by the center line of the scalpel head is zero. Or 15. ~45. .

The scalpel according to claim 1, wherein the scalpel (40) is provided with a finger switch (417), wherein the finger switch (417) is used for controlling the The microwave signal, the radio frequency signal, and/or the output of the physiological saline.

The scalpel according to claim 1, wherein the tail of the surgical handle (40) is provided with a joint (418), wherein the joint (418) passes through the surgical handle ( A transmission line of 40) is electrically coupled to the scalpel head (41) for inputting the microwave signal and/or the radio frequency signal to the scalpel head (41).

7. An electrosurgical system, comprising: a scalpel according to any of claims 1-6.

8. The electrosurgical system of claim 7, further comprising:

An generating unit for generating a radio frequency signal, a microwave signal, a direct current signal, and/or a water pressure for driving the physiological saline required for surgery;

a control unit electrically coupled to the electrical signal generating unit, for information feedback of the electrosurgical system, and for controlling output power of the radio frequency signal and the microwave signal and/or controlling the physiological saline The magnitude of the water pressure;

a synthesizer electrically connected to the generating unit and the control unit, configured to synthesize the radio frequency signal, the microwave signal, and/or the direct current signal generated by the generating unit without interfering with each other And transmitting the synthesized signal to the scalpel via a transmission cable.

9. The electrosurgical system according to claim 8, wherein the generating unit comprises:

An RF generator for generating the RF signal;

a microwave generator for generating the microwave signal;

a DC generator for generating the DC signal;

A water pressure generator for generating the water pressure.

10. The electrosurgical system of claim 9, wherein the synthesizer comprises:

An RF branch electrically coupled to the RF generator for transmitting the RF signal to an output port of the synthesizer; a microwave branch electrically connected to the microwave generator for transmitting the microwave signal to the output port;

A DC branch electrically coupled to the DC generator for transmitting the DC signal to the output port.