Radiofrequency plasma surgical knife

Abstract

The present invention provides a radio frequency plasma scalpel, comprising a dripping pipeline, a suction pipeline, a cable pipeline, and a handle, a handle connecting tube, a working part and a conductive connecting tube connected in sequence. The open end of the suction pipeline sequentially penetrates the handle and the handle connecting tube, and is accommodated in the loop electrode, and one end of the loop electrode extends to the inside of the handle through the open end of the handle connecting tube, which is conducive to forming a liquid guide channel between the handle connecting tube and the suction pipeline, and ensuring the normal operation of the radio frequency plasma scalpel; the radio frequency plasma scalpel also includes a conductive connecting tube, which is arranged at the open end of the suction pipeline, and makes the inside of the suction pipeline communicate with the middle through hole of the insulating seat, so as to be used as a crushing electrode, which is conducive to further assisting in crushing the tissue residues entering the inside of the radio frequency plasma scalpel, and sucking the crushed tissue residues out of the human body in a timely and effective manner.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a radio frequency plasma scalpel. Background Art

[0002] Radio frequency plasma scalpels can use ultra-low frequency electrical energy to stimulate sodium chloride molecules in blood, mucous membranes and soft tissues in human tissues to produce plasma states, break molecular bonds within the temperature range of 40-70°C for reversible protein denaturation, and directly crack biological macromolecules such as proteins into gases such as oxygen, carbon dioxide or nitrogen, completing multiple functions such as cutting, perforating, ablation, shrinking and hemostasis of tissues at the cost of "minimally invasive", so they have been widely used in clinical practice. For example, the utility model patent with announcement number CN203677241U discloses a plasma scalpel, which opens a water outlet on the side of a steel pipe connected to a ceramic head, or uses the gap between mutually nested pipes as a water outlet, so that the derived physiological saline contacts the electrode device to facilitate the generation of plasma.

[0003] However, due to the limitations of clinical applications, the plasma scalpel in the prior art is small and compact in structure. The tissue debris generated during the application process can easily block the water outlet or the nozzle of the suction channel, which is not conducive to timely and effectively sucking the tissue debris out of the human body.

[0004] Therefore, it is necessary to develop a novel radio frequency plasma scalpel to avoid the above-mentioned problems existing in the prior art. Summary of the invention

[0005] The purpose of the present invention is to provide a novel radio frequency plasma surgical knife, which can effectively and timely draw out tissue residues from the human body while ensuring normal operation.

[0006] To achieve the above-mentioned purpose, the radio frequency plasma scalpel provided by the present invention comprises a dripping pipeline, a suction pipeline, a cable pipeline, and a handle, a handle connecting tube and a working part connected in sequence, wherein the working part comprises an insulating seat with a central through hole and an emitter and a return electrode respectively arranged on two end surfaces of the insulating seat, and the radio frequency plasma scalpel also comprises a conductive connecting tube; the conductive connecting tube is arranged at the open end of the suction pipeline, and makes the interior of the suction pipeline communicate with the central through hole of the insulating seat, so as to be used as a crushing electrode; the open end of the suction pipeline sequentially passes through the handle and the handle connecting tube, and is accommodated in the return electrode, one end of the return electrode extends to the interior of the handle through the open end of the handle connecting tube, so as to form a liquid guide channel between the handle connecting tube and the suction pipeline; the dripping port of the dripping pipeline is connected to the liquid guide channel through the interior of the handle; one end of the cable pipeline is electrically connected to the return electrode and the emitter respectively through the handle.

[0007] The radio frequency plasma scalpel of the present invention has the following beneficial effects: the open end of the suction pipeline passes through the handle and the handle connecting tube in sequence and is accommodated in the loop electrode, and one end of the loop electrode extends to the inside of the handle through the open end of the handle connecting tube, which is conducive to forming a liquid guide channel between the handle connecting tube and the suction pipeline, thereby ensuring the normal operation of the radio frequency plasma scalpel; the radio frequency plasma scalpel also includes a conductive connecting tube, which is arranged at the open end of the suction pipeline and makes the inside of the suction pipeline communicate with the middle through hole of the insulating seat, so as to be used as a crushing electrode, which is conducive to further assisting in crushing the tissue residues entering the inside of the radio frequency plasma scalpel, and timely and effectively sucking the crushed tissue residues out of the human body.

[0008] Preferably, the inner diameter of the conductive connection tube is smaller than the inner diameter of the suction pipeline, so as to increase the suction force of the suction pipeline.

[0009] Preferably, the inner wall of the handle connecting tube does not fit the outer wall of the loop electrode, so that the liquid guide channel is formed between the inner wall of the handle connecting tube and the outer wall of the loop electrode, which is conducive to full coverage of the exposed part of the working part.

[0010] Preferably, the portion where the handle connecting tube contacts the loop electrode is fitted to form the liquid conduction channel between the inner wall of the loop electrode and the outer wall of the suction pipeline, and the exposed portion of the loop electrode is provided with a plurality of liquid conduction through holes, and the plurality of liquid conduction through holes are arranged around the outer wall of the loop electrode to facilitate full coverage of the exposed portion of the working part for instillation.

[0011] Preferably, at least a portion of the suction pipeline is an elastic hose to effectively reduce electrode vibration during the suction process.

[0012] Preferably, the conductive connection tube is mainly composed of high temperature resistant conductive material. Its beneficial effect is that it is conducive to the function of crushing the target tissue.

[0013] Further preferably, the high temperature resistant conductive material is a high temperature resistant metal material.

[0014] Further preferably, the high temperature resistant metal material is mainly composed of any one or both of molybdenum and tungsten.

[0015] Preferably, the cable pipeline includes a first connecting wire and a second connecting wire, wherein the first connecting wire is electrically connected to the return electrode, and the second connecting wire is electrically connected to the conductive connection tube and the emitter. The beneficial effect is that while the emitter performs the cutting function, the conductive connection tube can crush tissue fragments that may be sucked into the radio frequency plasma scalpel, thereby preventing tissue fragments from clogging the inside of the radio frequency plasma scalpel.

[0016] More preferably, it further includes a crimping tube, and the second connecting tube is electrically connected to the conductive connection tube and the emitter through the crimping tube.

[0017] Further preferably, the built-in portion of the emitter and the conductive connection tube are accommodated in the portion of the return electrode located in the handle connecting tube.

[0018] Further preferably, an insulating tube is included, in which the built-in part of the emitter and the conductive connecting tube are accommodated, so that the built-in part of the emitter and the conductive connecting tube are not in electrical contact with the return pole.

[0019] Preferably, a secondary crushing electrode is further included, and the secondary crushing electrode is arranged between the emitter and the middle through hole of the insulating seat to work synchronously with the emitter. Its beneficial effect is that when the emitter performs the cutting function, the tissue fragments that may be generated can be crushed by the secondary crushing electrode before entering the interior of the radio frequency plasma scalpel, thereby avoiding the tissue fragments from clogging the interior of the radio frequency plasma scalpel.

[0020] Preferably, the emitter includes an electrode sheet, a hollow area is provided on the surface of the electrode sheet, the hollow area spans the middle through hole of the insulating seat, and is arranged opposite to the middle through hole of the insulating seat, and the area of ​​the hollow area along the radial direction is not less than the area of ​​the middle through hole of the insulating seat along the radial direction. The beneficial effect is that it is conducive to increasing the suction force, and the tissue residues are sucked out of the human body in a timely and effective manner while exerting the function of crushing tissue. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the radio frequency plasma surgical knife of the present invention;

[0022] Figure 2a for Figure 1 A schematic diagram of an assembly structure between the working part and the handle connecting pipe shown;

[0023] Figure 2b for Figure 2a A schematic diagram of the assembly structure between the return pole and the handle connecting tube shown;

[0024] Figure 3 for Figure 1 Another schematic diagram of the assembly structure between the working part and the handle connecting pipe is shown;

[0025] Figure 4a It is a structural schematic diagram of the fixing seat of the present invention;

[0026] Figure 4b for Figure 4a A cross-sectional view of the fixing seat along A1-A2 shown;

[0027] Figure 4c for Figure 1 A portion of the infusion catheter and a portion of the suction catheter are shown with Figure 4a A schematic diagram of the assembly structure between the fixing seats shown;

[0028] Figure 5a The ceramic base, emitter, conductive connection tube and Figure 1 A schematic diagram of the assembly structure between the suction catheters shown;

[0029] Figure 5b for Figure 5a A longitudinal section of

[0030] Figure 5c The secondary crushing electrode of the present invention and Figure 5a A schematic diagram of the assembly structure between the ceramic base and the emitter shown;

[0031] Figure 6 for Figure 1 The cables shown are Figure 4a A schematic diagram of the assembly structure in the fixing seat shown;

[0032] Figure 7 It is a schematic diagram of the structure of a single-needle emitter of the present invention;

[0033] Figure 8a for Figure 5a The ceramic base shown is Figure 3 Schematic diagram of the assembly structure between the sheet emitters shown;

[0034] Figure 8b for Figure 3 A schematic diagram of the structure of a sheet emitter shown;

[0035] Fig. 9 for Figure 3 Another schematic diagram of the structure of the sheet emitter shown;

[0036] Fig.10 for Figure 3 Another structural schematic diagram of a sheet emitter is shown. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with general skills in the field to which the present invention belongs. "Including" and similar words used in this article mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0038] In view of the problems existing in the prior art, an embodiment of the present invention provides a radio frequency plasma surgical knife, comprising a liquid guiding device, a cable, and a handle, a handle connecting tube and a working part connected in sequence.

[0039] Specifically, the liquid guiding device includes a dripping pipeline and a suction pipeline, and the working part includes an insulating seat with a central through hole and an emitter and a return pole respectively arranged on two end surfaces of the insulating seat.

[0040] Figure 1 Schematic diagram of the structure of a radio frequency plasma surgical knife according to an embodiment of the present invention.

[0041] Reference Figure 1 The dripping pipeline (not shown in the figure) of the radio frequency plasma surgical knife 1 includes a dripping joint 111, a dripping regulating valve 112 and a dripping catheter 113. The dripping joint 111 is used to connect to an external liquid supply device, and the liquid flow rate is adjusted by the dripping regulating valve 112, so that physiological saline can be introduced into the dripping catheter 113. Specifically, the dripping catheter 113 is fixedly connected to the handle 14, and provides the physiological saline to the working part 16 through the handle connecting tube 151.

[0042] The suction pipeline (not shown) of the radio frequency plasma surgical knife 1 includes a suction connector 121, a suction regulating valve 122 and a suction catheter 123. The suction connector 121 is used to connect an external suction device, such as a negative pressure suction device, and can be used to adjust the suction force through the suction regulating valve 122.

[0043] Specifically, the suction catheter 123 passes through the handle 14 and the handle connecting tube 151 to be fixedly connected to the working part 16 , and communicates with the outside through the working part 16 to form a suction channel.

[0044] The cable pipeline (not shown in the figure) of the radio frequency plasma surgical knife 1 includes a cable connector 131 and a cable 132. The cable connector 131 is used to connect to an external energy supply device to provide radio frequency energy to the working part 16 through the cable 132, so that the working part 16 generates an electric field.

[0045] Specifically, the cable 132 is fixedly connected to the handle 14 or the handle connecting tube 151 .

[0046] During the operation of the radio frequency plasma scalpel 1, physiological saline flows to the working part 16 through the infusion catheter 113, and is infused into the working part 16 to form plasma under the action of the electric field, and acts on the target tissue to cut the target tissue into block tissue. The working part 16 cuts the target tissue during the infusion of physiological saline, which inevitably produces small block tissues, and the physiological saline will also become waste liquid after contacting human tissue. Under the action of the external suction device, the block tissue enters the interior of the radio frequency plasma scalpel 1 under the entrainment of the waste liquid, and is discharged from the human body through the suction catheter 123.

[0047] In some embodiments of the present invention, the target tissue includes any one or more of tonsils, adenoids, tongue root, soft palate, nasal concha and pharyngeal tumors.

[0048] In some embodiments of the present invention, at least a portion of the suction catheter 123 is an elastic hose to effectively reduce electrode vibration during the process of suctioning the fragmented tissue and the waste liquid.

[0049] In some specific embodiments of the present invention, the portion of the suction catheter 123 received in the handle 14 and the handle connecting tube 151 is an elastic hose. In some other specific embodiments of the present invention, the suction catheter 123 is an elastic hose.

[0050] Figure 2a for Figure 1 A schematic diagram of an assembly structure between the working part and the handle connecting tube is shown. Figure 2b for Figure 2a Schematic diagram of the assembly structure between the return pole and the handle connecting tube is shown.

[0051] Reference Figure 1 and Figure 2a In some embodiments of the present invention, the loop electrode 21 , the insulating seat 22 having a central through hole 221 , and the emitting electrode group 23 together constitute the working part 16 .

[0052] Reference Figure 2a and Figure 2bOne end of the loop electrode 21 is fixedly connected to one end of the insulating seat 22, and the other end is received in the handle connecting tube 151, so that there is a space between the outer wall of the loop electrode 21 and the inner wall of the handle connecting tube 151, which serves as a liquid guide channel for the physiological saline to flow along the handle. Figure 2a The saline flows out of the handle connecting tube 151 in the direction indicated by the solid closed arrow, thereby fully covering the exposed portion of the working portion 16, that is, the portion of the working portion 16 located outside the handle connecting tube 151, thereby avoiding the problem in the prior art that the normal flow of saline cannot be caused by the small coverage area of ​​the infusion port and the blockage of tissue fragments, thereby hindering the operation, thereby improving the safety of use.

[0053] The suction catheter 123 passes through the handle connecting tube 151 to communicate with the middle through hole 221. The tissue fragments and waste liquid generated by the operation of the transmitting electrode group 23 are discharged along the Figure 2a The direction indicated by the right-angle arrow is sequentially drawn out of the human body through the middle through hole 221 and the suction catheter 123.

[0054] In some embodiments of the present invention, the insulating seat 22 is a ceramic seat.

[0055] Figure 3 for Figure 1 Another schematic diagram of the assembly structure between the working part and the handle connecting tube is shown.

[0056] Reference Figure 1 and Figure 3 The loop electrode 21, the insulating seat 22 and the sheet emitter 31 constitute the working part 16. A part of the loop electrode 21 is sleeved in the insulating sleeve 152. The outer wall of the loop electrode 21 is tightly fitted with the inner wall of the handle connecting tube 151 to enhance the sealing performance. The exposed part of the loop electrode 21, that is, the part outside the handle connecting tube 151, is provided with a plurality of liquid conducting holes 211. The physiological saline is passed through the handle connecting tube 151. Figure 3 The liquid flows out from the plurality of liquid conducting through holes 211 in the direction indicated by the solid closed arrow through the liquid conducting channel formed between the inner wall of the return pole 21 and the outer wall of the suction catheter 123. Since the plurality of liquid conducting through holes 211 are arranged around the outer wall of the return pole 21, it is beneficial to achieve full coverage instillation for the exposed part of the working part 16, that is, the part of the working part 16 located outside the handle connecting tube 151.

[0057] In some embodiments of the present invention, a plurality of the liquid-conducting through holes 211 are disposed around the outer wall of the loop electrode 21 and are arranged in at least two rows along the axial direction of the loop electrode 21 .

[0058] In some embodiments of the present invention, the handle connecting tube 151 is an insulating sleeve.

[0059] In some embodiments of the present invention, the handle includes a fixing seat.

[0060] Figure 4a Schematic diagram of the structure of a fixing base according to an embodiment of the present invention. Figure 4b for Figure 4a The cross-sectional view of the fixing seat along A1-A2 is shown. Figure 4c for Figure 1 A portion of the infusion catheter and a portion of the suction catheter are shown with Figure 4a Schematic diagram of the assembly structure between the fixed seats shown.

[0061] Reference Figures 4a to 4c The fixing seat 4 includes a U-shaped portion 41, a butt joint pipe 42 and a receiving pipe 43 connected in sequence. The butt joint pipe 42 is provided with an infusion butt joint socket 421 and a suction butt joint channel 422 located below the infusion butt joint socket 421, so as to allow one end of the infusion catheter 113 to be fixedly connected and the suction catheter 123 to pass through.

[0062] Figure 5a The ceramic base, emitter, conductive connection tube and Figure 1 Schematic diagram of the assembly structure between the suction catheters shown. Figure 5b for Figure 5a Longitudinal section of . Figure 5c The secondary crushing electrode of the embodiment of the present invention and Figure 5a Schematic diagram of the assembly structure between the ceramic base and the emitter shown.

[0063] Reference Figure 5a to Figure 5c A plurality of emitters 52 are disposed on one end face of the ceramic seat 51. A conductive connection tube 54 is disposed between the open end of the suction conduit 123 and the ceramic seat 51 and is sealedly connected to the suction conduit 123 and the ceramic seat 51, respectively. The suction conduit 123 communicates with the outside through the conductive connection tube 54 and the through hole 511 of the ceramic seat 51. The through hole 511 is a through hole in the middle of the ceramic seat 51.

[0064] Reference Figure 5c A plurality of emitters 52 arranged side by side on one end face of the ceramic seat 51 are arranged in a radial direction across the through hole 511 of the ceramic seat 51, and a secondary crushing electrode 55 is also arranged between one of the emitters close to the edge of the end face of the ceramic seat 51 and the through hole 511 of the ceramic seat 51. The secondary crushing electrode 55 works synchronously with the plurality of emitters 52 to further cut and crush the fragmented tissue to avoid the through hole 511 of the ceramic seat 51 being blocked.

[0065] Further, refer to Figure 1 and Figure 5b The conductive connecting tube 54 can be used as a crushing electrode by being electrically connected to the cable 132 to generate plasma inside the conductive connecting tube 54 to further crush tissue fragments and waste liquid entering the suction catheter 123, thereby preventing the suction catheter 123 from being blocked and increasing its suction performance.

[0066] Specifically, the conductive connection tube 54 is mainly composed of a high temperature resistant conductive material. More specifically, the high temperature resistant conductive material is a high temperature resistant metal material, and the high temperature resistant metal material is mainly composed of molybdenum or tungsten.

[0067] Specifically, since the fragmented tissue is easily blocked between the through hole 511 and the open end of the suction catheter 123 after entering through the through hole 511 of the ceramic seat 51, the inner diameter of the conductive connecting tube 54 connected to the suction catheter 123 is designed to be smaller than the inner diameter of the suction catheter 123, which can help increase the suction force of the suction catheter 123.

[0068] Figure 6 for Figure 1 The cables shown are Figure 4a Schematic diagram of the assembly structure in the fixed seat shown.

[0069] Reference Figure 1 , Figure 4a , Figure 5c and Figure 6 One end of the suction catheter 123 passes through the return electrode 21, and the cable 132 extends into the U-shaped portion 41, and one end is divided into a first connecting line 1321 and a second connecting line 1322. The first connecting line 1321 is electrically connected to the return electrode 21, and the second connecting line 1322 is welded to the crimping tube 61 and electrically connected to the plurality of emitters 52, the secondary crushing electrode 55 and the conductive connection tube 54. The plurality of emitters 52 and the conductive connection tube 54 are short-circuited through the crimping tube 61.

[0070] In some embodiments of the present invention, the built-in parts of the plurality of emitters 52 and the conductive connection tube 54 are both received in the return pole 21. The built-in parts of the plurality of emitters 52 refer to the parts of the emitters 52 received in the handle connection tube 151 and extending toward the inside of the handle 14.

[0071] In some embodiments of the present invention, the internal parts of the plurality of emitters 52 and the conductive connection tube 54 are further accommodated in an insulating tube, so as to be electrically insulated from the return electrode 21 .

[0072] Reference Figure 2a and Figure 5cThe emitting electrode group 23 and the plurality of emitters 52 are both composed of single-needle emitters.

[0073] Figure 7 Schematic diagram of the structure of a single-needle emitter according to an embodiment of the present invention.

[0074] Reference Figure 7 The single-needle emitter 7 is a U-shaped needle structure, and the first electrode 71 and the second electrode 72 parallel to each other of the single-needle emitter 7 have different lengths, and both ends of the third electrode 73 have a bending structure (not shown in the figure) to be connected to the first electrode 71 and the second electrode 72 respectively.

[0075] Reference Figure 1 , Figure 5a and Figure 7 When the single-needle emitter 7 is fixedly connected to the end surface of the ceramic base 51, the third electrode 73, a portion of the first electrode 71, and a portion of the second electrode 72 are exposed to the outside of the end surface of the ceramic base 51 to cut and ablate the target tissue. The first electrode 71 passes through the ceramic base 51 to be electrically connected to the cable 132.

[0076] Specifically, refer to Figure 2a , Figure 6 and Figure 7 Taking the emitting electrode group 23 as an example, the emitting electrode group 23 is composed of three single-needle emitters 7, the third electrodes 73 of each single-needle emitter 7 are arranged parallel to each other, and the first electrode 71 of each single-needle emitter 7 is short-circuited to the crimping tube 61 to be electrically connected to the second connecting line 1322.

[0077] In some embodiments of the present invention, the emitter includes an electrode sheet, a surface of the electrode sheet is provided with a hollow area, the hollow area spans the central through hole of the insulating seat so as to be arranged opposite to the central through hole of the insulating seat, and the area of ​​the hollow area along the radial direction is not less than the area of ​​the central through hole of the insulating seat along the radial direction.

[0078] In some embodiments of the present invention, the emitter is Figure 3 The sheet-shaped emitter 31 shown includes the electrode sheet.

[0079] Figure 8a for Figure 5a The ceramic base shown is Figure 3 Schematic diagram of the assembly structure between the sheet emitters shown. Figure 8b for Figure 3 A schematic diagram of the structure of a sheet emitter is shown.

[0080] Reference Figure 3, Figure 8a and Figure 8b The first butterfly filter electrode 811 and the first long electrode 814, the first short electrode 812, the second short electrode 813 and the third short electrode 815 connected to the first butterfly filter electrode 811 constitute the sheet emitter 31. The first butterfly filter electrode 811 is the electrode sheet of the sheet emitter 31, and the sheet emitter 31 is arranged on the ceramic seat 51. The surface of the first butterfly filter electrode 811 has two isosceles trapezoidal through holes 816 that are mirror images of each other along the center line 818 of the surface, and two right-angled triangular through holes 817 that are mirror images of each other along the center line of the isosceles trapezoidal hollow area 816. The first long electrode 814 and the third short electrode 815 are located on one side of the surface center line 818, and the second short electrode 813 and the third short electrode 815 are located on the other side of the surface center line 818.

[0081] Reference Figure 1 , Figure 8a and Figure 8b The length of the first long electrode 814 is greater than the length of the first short electrode 812, the second short electrode 813 and the third short electrode 815, so as to penetrate the ceramic base 51 and be electrically connected to the cable 132. The first short electrode 812, the second short electrode 813 and the third short electrode 815 are fixedly connected in the ceramic base 51, so that the first butterfly filter electrode 811 is located outside the end surface of the ceramic base 51.

[0082] Reference Figure 6 and Figure 8b The first long electrode 814 is short-circuited to the crimping tube 61 to be electrically connected to the second connecting wire 1322 .

[0083] Reference Figure 8a and Figure 8b The two isosceles trapezoidal through holes 816 and the four right-angled triangular through holes 817 constitute the hollow area of ​​the first butterfly filter electrode 811. The hollow area spans the through hole 511 of the ceramic seat 51 to be relatively arranged, that is, the edge of the through hole 511 does not exceed the range limited by the hollow area to enhance the attraction of the fragmented tissue.

[0084] Furthermore, the area of ​​the hollow region of the first butterfly filter electrode 811 along the radial direction is not less than the area of ​​the through hole 511 along the radial direction.

[0085] Fig. 9 for Figure 3 Another structural schematic diagram of a sheet emitter is shown.

[0086] Reference Figure 3 and Fig. 9 , the second butterfly filter electrode 91, the second long electrode 92 arranged along the center line of the surface of the second butterfly filter electrode 91, and the fourth short electrode 93 and the fifth short electrode 94 arranged on the opposite side of the second long electrode 92 along the second long electrode 92 as mirror images of each other together constitute the sheet-like emitter 31, and the second butterfly filter electrode 91 is the electrode sheet of the sheet-like emitter 31. The surface of the second butterfly filter electrode 91 is provided with a mountain-shaped through hole 95 symmetrically arranged along the center line of the surface of the second butterfly filter electrode 91.

[0087] Reference Figure 1 , Figure 8a and Fig. 9 ,when Fig. 9 The sheet emitter 31 shown is arranged on the end face of the ceramic base 51, the second long electrode 92 passes through the end face of the ceramic base 51 to be electrically connected to the cable 132, the fourth short electrode 93 and the fifth short electrode 94 are fixedly connected in the ceramic base 51, so that the second butterfly filter electrode 91 is located on the outside of the end face of the ceramic base 51, and the mountain-shaped through hole 95 spans the through hole 511 to be relatively arranged to enhance the attraction of the fragmented tissue.

[0088] Specifically, the area of ​​the chevron-shaped through hole 95 along the radial direction is not less than the area of ​​the through hole 511 along the radial direction.

[0089] Specifically, refer to Figure 6 and Fig. 9 The second long electrode 92 is short-circuited to the crimping tube 61 to be electrically connected to the second connecting wire 1322 .

[0090] Fig.10 for Figure 3 Another structural schematic diagram of a sheet emitter is shown.

[0091] Reference Figure 8a , Fig. 9 and Fig.10 , Fig.10 The sheet emitter 31 shown in FIG. Fig. 9 The main difference of the sheet emitter 31 shown is that the third butterfly filter electrode 101 is Fig.10 The electrode sheet of the sheet-like emitter 31 shown in the figure has two oval through holes 102 on the surface of the third butterfly filter electrode 101 which are mirror images of each other along the center line of the surface of the third butterfly filter electrode 101 , and the hollow area surrounded by the two oval through holes 102 is arranged opposite to each other across the through hole 511 .

[0092] Specifically, the area of ​​the hollow region surrounded by the two oval through holes 102 along the radial direction is not less than the area of ​​the through hole 511 along the radial direction, so as to enhance the attraction of the fragmented tissue.

[0093] Although the embodiments of the present invention are described in detail above, it is obvious to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations are within the scope and spirit of the present invention as described in the claims. Moreover, the present invention described herein may have other embodiments and may be implemented or realized in a variety of ways.

Claims

1. A radio frequency plasma surgical knife, comprising an infusion pipeline, a suction pipeline, a cable pipeline, and a handle, a handle connecting pipe and a working part connected in sequence, wherein the working part comprises an insulating seat with a central through hole and an emitter and a return electrode respectively arranged on two end surfaces of the insulating seat, characterized in that: The radio frequency plasma surgical knife also includes a conductive connection tube; The conductive connection tube is arranged at the open end of the suction pipeline, and makes the interior of the suction pipeline communicate with the middle through hole of the insulating seat, so as to be used as a pulverizing electrode; The open end of the suction pipeline sequentially passes through the handle and the handle connecting tube and is accommodated in the return pole, and one end of the return pole extends to the inside of the handle through the open end of the handle connecting tube to form a liquid guide channel between the handle connecting tube and the suction pipeline; The handle connecting tube is fitted with the contacting part of the loop electrode to form the liquid conducting channel between the inner side wall of the loop electrode and the outer side wall of the suction pipeline. The exposed part of the loop electrode is provided with a plurality of liquid conducting through holes, and the plurality of liquid conducting through holes are arranged around the outer side wall of the loop electrode to facilitate full coverage and dripping of the exposed part of the working part. The drip port of the drip pipeline is connected to the liquid guide channel through the interior of the handle; One end of the cable pipeline is electrically connected to the return electrode and the emitter electrode respectively through the handle; The emitter includes an electrode sheet, a surface of which is provided with a hollow area, the hollow area spanning the central through hole of the insulating seat so as to be arranged opposite to the central through hole of the insulating seat, and the area of ​​the hollow area along the radial direction is not less than the area of ​​the central through hole of the insulating seat along the radial direction.

2. The radio frequency plasma surgical knife according to claim 1, characterized in that: The inner diameter of the conductive connection tube is smaller than the inner diameter of the suction pipeline, so as to increase the suction force of the suction pipeline.

3. The radio frequency plasma surgical knife according to claim 1, characterized in that: The inner wall of the handle connecting tube does not fit the outer wall of the loop electrode, so that the liquid guide channel is formed between the inner wall of the handle connecting tube and the outer wall of the loop electrode, which is conducive to full coverage and dripping of the exposed part of the working part.

4. The radio frequency plasma surgical knife according to claim 1, characterized in that: At least a portion of the suction pipeline is an elastic hose, so as to effectively reduce the vibration of the electrode during the suction process.

5. The radio frequency plasma surgical knife according to claim 1, characterized in that: The conductive connection tube is mainly composed of high temperature resistant conductive material.

6. The radio frequency plasma surgical knife according to claim 5, characterized in that: The high temperature resistant conductive material is a high temperature resistant metal material.

7. The radio frequency plasma surgical knife according to claim 6, characterized in that: The high temperature resistant metal material is mainly composed of either or both of molybdenum and tungsten.

8. The radio frequency plasma surgical knife according to claim 1, characterized in that: The cable pipeline includes a first connecting wire and a second connecting wire, wherein the first connecting wire is electrically connected to the return electrode, and the second connecting wire is electrically connected to the conductive connection tube and the emitter electrode.

9. The radio frequency plasma surgical knife according to claim 8, characterized in that: It also includes a crimping tube, through which the second connecting wire is electrically connected to the conductive connection tube and the emitter.

10. The radio frequency plasma surgical knife according to claim 8, characterized in that: The built-in part of the emitter and the conductive connecting tube are accommodated inside the return pole.

11. The radio frequency plasma surgical knife according to claim 10, characterized in that: It also includes an insulating tube, in which the built-in part of the emitter and the conductive connecting tube are accommodated, so that the built-in part of the emitter and the conductive connecting tube are not in electrical contact with the return pole.

12. The radio frequency plasma surgical knife according to claim 1, characterized in that: It also includes a secondary crushing electrode, which is arranged between the emitter and the middle through hole of the insulating seat to work synchronously with the emitter.

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