CN111096789A

CN111096789A - Radio frequency plasma scalpel

Info

Publication number: CN111096789A
Application number: CN202010009974.1A
Authority: CN
Inventors: 宋保组; 逄永刚; 杨松涛; 曹金象; 张晓芳; 冯福玲
Original assignee: Jiangsu Qihao Medical Technology Co ltd
Current assignee: Jiangsu Qihao Medical Technology Co ltd
Priority date: 2020-01-06
Filing date: 2020-01-06
Publication date: 2020-05-05

Abstract

The invention provides a radio frequency plasma scalpel, which comprises a drip infusion pipeline, an attraction pipeline, a cable pipeline, a handle connecting pipe, a working part and a conductive connecting pipe, wherein the handle, the handle connecting pipe, the working part and the conductive connecting pipe are sequentially connected. The open end of the suction pipeline sequentially penetrates through the handle and the handle connecting pipe and is contained in the loop pole, one end of the loop pole extends into the handle through the open end of the handle connecting pipe, so that a liquid guide channel is formed between the handle connecting pipe and the suction pipeline, and the normal work of the radio frequency plasma scalpel is ensured; the radio frequency plasma scalpel further comprises a conductive connecting pipe, the conductive connecting pipe is arranged at the opening end of the suction pipeline, the interior of the suction pipeline is communicated with the middle through hole of the insulating seat to be used as a crushing electrode, the tissue residual block entering the radio frequency plasma scalpel is further crushed in an auxiliary mode, and the crushed tissue residual block is timely and effectively sucked out of a human body.

Description

Radio frequency plasma scalpel

Technical Field

The invention relates to the technical field of medical instruments, in particular to a radio frequency plasma scalpel.

Background

The radio frequency plasma scalpel can excite sodium chloride molecules in blood, mucosa and soft tissues to generate a plasma state in human tissues by using ultralow-frequency electric energy, break molecular bonds within the temperature range of reversible denaturation of protein at 40-70 ℃, directly crack biological macromolecules such as protein and the like into gases such as oxygen, carbon dioxide or nitrogen and the like, and complete multiple functions of cutting, punching, ablating, shrinking, stopping bleeding and the like of the tissues at the cost of minimally invasive, so the radio frequency plasma scalpel is widely applied clinically. For example, utility model patent publication No. CN203677241U discloses a plasma scalpel, which is characterized in that a water outlet is formed on the side of a steel tube connected with a ceramic head, or a gap between pipelines sleeved with each other is used as the water outlet, so that the derived physiological saline is in contact with an electrode device, thereby facilitating the generation of plasma.

However, since the plasma scalpel in the prior art is limited by clinical application, the structure itself is compact and small, and tissue debris generated in the application process can easily block a water outlet or a nozzle of a suction channel, which is not beneficial to timely and effectively sucking the tissue debris out of a human body.

Therefore, there is a need to develop a new rf plasma scalpel to avoid the above problems in the prior art.

Disclosure of Invention

The invention aims to provide a novel radio frequency plasma scalpel, which can effectively suck tissue residual blocks out of a human body in time on the premise of ensuring normal work.

In order to achieve the purpose, the radio frequency plasma scalpel provided by the invention comprises a drip line, an attraction line, a cable line, a handle connecting pipe and a working part which are sequentially connected, wherein the working part comprises an insulating seat with a middle through hole, and an emitting electrode and a loop electrode which are respectively arranged on two end faces of the insulating seat, and the radio frequency plasma scalpel further comprises a conductive connecting pipe; the conductive connecting pipe is arranged at the opening end of the suction pipeline, and the inside of the suction pipeline is communicated with the middle through hole of the insulating seat to be used as a crushing electrode; the open end of the suction pipeline sequentially penetrates through the handle and the handle connecting pipe and is contained in the loop pole, and one end of the loop pole extends into the handle through the open end of the handle connecting pipe so as to form a liquid guide channel between the handle connecting pipe and the suction pipeline; the drip port of the drip line is communicated with the liquid guide channel through the interior of the handle; one end of the cable pipeline is electrically connected with the loop pole and the emitting pole respectively through the handle.

The radio frequency plasma scalpel has the beneficial effects that: the open end of the suction pipeline sequentially penetrates through the handle and the handle connecting pipe and is contained in the loop pole, one end of the loop pole extends into the handle through the open end of the handle connecting pipe, so that a liquid guide channel is formed between the handle connecting pipe and the suction pipeline, and the normal work of the radio frequency plasma scalpel is ensured; the radio frequency plasma scalpel further comprises a conductive connecting pipe, the conductive connecting pipe is arranged at the opening end of the suction pipeline, the interior of the suction pipeline is communicated with the middle through hole of the insulating seat to be used as a crushing electrode, the tissue residual block entering the radio frequency plasma scalpel is further crushed in an auxiliary mode, and the crushed tissue residual block is timely and effectively sucked out of a human body.

Preferably, the inner diameter of the conductive adapter tube is smaller than the inner diameter of the suction line to increase the suction force of the suction line.

Preferably, the inner side wall of the handle connecting pipe is not attached to the outer side wall of the loop pole, so that the liquid guide channel is formed between the inner side wall of the handle connecting pipe and the outer side wall of the loop pole, and full-coating instillation of the exposed part of the working part is facilitated.

Preferably, the handle connecting pipe with the position laminating that the return circuit utmost point contacted, in order to the inside wall that the return circuit utmost point with form between the lateral wall of attraction pipeline drain passageway, a plurality of drain through-holes have been seted up to the exposed part that the return circuit utmost point, and is a plurality of the drain through-hole encircles the lateral wall setting of the return circuit utmost point, in order to be favorable to right the exposed part of working portion realizes the instillation of full cladding.

Preferably, at least a part of the suction pipeline is an elastic hose so as to effectively reduce electrode vibration during the suction process.

Preferably, the electrically conductive adapter tube consists essentially of a high temperature resistant electrically conductive material. The beneficial effects are that: is beneficial to the function of crushing target tissues.

Further preferably, the high-temperature-resistant conductive material is a high-temperature-resistant metal material.

Further preferably, the refractory metal material is composed mainly of either or both of molybdenum and tungsten.

Preferably, the cable line comprises a first connection line electrically connected to the loop and a second connection line electrically connected to the conductive adapter tube and the emitter electrode. The beneficial effects are that: the emitter can perform a cutting function, and the conductive connecting tube can crush tissue fragments possibly sucked into the radio frequency plasma scalpel, so that the tissue fragments are prevented from blocking the inside of the radio frequency plasma scalpel.

Further preferably, the emitter electrode structure further comprises a crimping tube, and the second connecting tube is electrically connected with the conductive connecting tube and the emitter electrode respectively through the crimping tube.

Further preferably, the built-in part of the emitter electrode and the conductive adapter tube are accommodated in a part of the return pole located in the handle connecting tube.

Further preferably, the emitter comprises an insulating tube, and the built-in part of the emitter and the conductive adapter tube are accommodated in the insulating tube, so that the built-in part of the emitter and the conductive adapter tube are not in electrical contact with the return electrode.

Preferably, the device further comprises a secondary crushing electrode, wherein the secondary crushing electrode is arranged between the emitter and the middle through hole of the insulating base to work synchronously with the emitter. The beneficial effects are that: the secondary crushing electrode is used for crushing possibly generated tissue fragments before the tissue fragments enter the radio frequency plasma scalpel, so that the tissue fragments are prevented from blocking the inside of the radio frequency plasma scalpel.

Preferably, the emitter comprises an electrode plate, a hollowed-out region is formed in the surface of the electrode plate, the hollowed-out region spans the middle through hole of the insulating base and is opposite to the middle through hole of the insulating base, and the area of the hollowed-out region in the radial direction is not smaller than that of the middle through hole of the insulating base in the radial direction. The beneficial effects are that: is beneficial to increasing the suction force, and effectively sucks the tissue residual block out of the human body in time while exerting the function of crushing the tissue.

Drawings

FIG. 1 is a schematic structural view of a RF plasma scalpel in accordance with the present invention;

FIG. 2a is a schematic view of an assembly structure between the working part and the handle connecting tube shown in FIG. 1;

FIG. 2b is a schematic view of the assembly structure between the circuit pole and the handle connecting tube shown in FIG. 2 a;

FIG. 3 is a schematic view of another assembly structure between the working portion and the handle connecting tube shown in FIG. 1;

FIG. 4a is a schematic structural view of a fixing base of the present invention;

FIG. 4b is a cross-sectional view of the anchor block shown in FIG. 4a taken along line A1-A2;

FIG. 4c is a schematic view of the assembly structure between a portion of the instillation conduit and the aspiration conduit shown in FIG. 1 and the holder shown in FIG. 4 a;

FIG. 5a is a schematic view of the assembly of the ceramic holder, emitter electrode, conductive adapter tube and suction catheter of FIG. 1;

FIG. 5b is a longitudinal section of FIG. 5 a;

FIG. 5c is a schematic view of the assembly structure between the regrind electrode of the present invention and the ceramic holder and emitter shown in FIG. 5 a;

FIG. 6 is a schematic view of the assembly of the cable shown in FIG. 1 in the holder shown in FIG. 4 a;

FIG. 7 is a schematic diagram of a single-pin emitter according to the present invention;

FIG. 8a is a schematic view of an assembly structure between the ceramic base shown in FIG. 5a and the sheet emitter shown in FIG. 3;

FIG. 8b is a schematic view of a structure of the sheet emitter shown in FIG. 3;

fig. 9 is a schematic view of another structure of the sheet emitter shown in fig. 3;

fig. 10 is a schematic view of another structure of the sheet emitter shown in fig. 3.

Detailed Description

In order to make the objects, 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 with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the word "comprising" and similar words are intended to mean that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.

Aiming at the problems in the prior art, the embodiment of the invention provides a radio frequency plasma scalpel which comprises a liquid guide device, a cable, a handle connecting pipe and a working part, wherein the handle, the handle connecting pipe and the working part are sequentially connected.

Specifically, drain includes instillation pipeline and suction line, the work portion including have the middle part through-hole the insulating seat and set up respectively in the projecting pole and the return circuit pole of two terminal surfaces of insulating seat.

Fig. 1 is a schematic structural view of a rf plasma scalpel according to an embodiment of the present invention.

Referring to fig. 1, the drip line (not shown) of the rf plasma scalpel 1 includes a drip connector 111, a drip regulating valve 112, and a drip conduit 113, wherein the drip connector 111 is connected to an external liquid supply device, and the drip regulating valve 112 regulates a liquid flow rate to introduce a physiological saline into the drip conduit 113. Specifically, the drip line 113 is fixedly connected to the handle 14, and supplies the saline to the working part 16 through a handle connection tube 151.

The suction line (not shown) of the rf plasma scalpel 1 includes a suction connector 121, a suction adjusting valve 122 and a suction conduit 123. The suction connector 121 is used to connect an external suction device, such as a vacuum extractor, and can be used to adjust the suction force by the suction adjusting valve 122.

Specifically, the suction catheter 123 penetrates the handle 14 and the handle connection tube 151 to be fixedly connected to the working portion 16, and communicates with the outside through the working portion 16 to form a suction passage.

The cable conduit (not shown) of the rf plasma scalpel 1 comprises a cable connector 131 and a cable 132, wherein the cable connector 131 is used to connect an external energy supply device, so as to supply rf energy to the working portion 16 through the cable 132, so as to generate an electric field in the working portion 16.

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

In the working process of the radio frequency plasma scalpel 1, the physiological saline flows to the working part 16 through the instillation conduit 113 and is instilled to the working part 16, so that plasma is formed under the action of an electric field and acts on target tissues, and the target tissues are cut into blocky tissues. The working part 16 cuts the target tissue in the process of instilling the physiological saline, inevitably generates small-volume block-shaped tissue, and the physiological saline also becomes waste liquid after contacting human tissue. Under the action of the external suction device, the crushed tissue enters the inside of the radio frequency plasma scalpel 1 under the entrainment of the waste liquid, and is discharged out of the human body through the suction conduit 123.

In some embodiments of the invention, the target tissue comprises any one or more of tonsils, adenoids, tongue roots, soft palate, turbinates, and laryngeal tumors of the pharynx.

In some embodiments of the present invention, at least a portion of the aspiration conduit 123 is an elastic hose to effectively reduce electrode chatter during aspiration of the fragmented tissue and the waste fluid.

In some embodiments of the present invention, the portion of the suction conduit 123 contained in the handle 14 and the handle connecting tube 151 is an elastic hose. In other embodiments of the present invention, the suction conduit 123 is an elastic hose.

Fig. 2a is a schematic view of an assembly structure between the working part and the handle connecting pipe shown in fig. 1. Fig. 2b is a schematic view of the assembly structure between the circuit pole and the handle connecting tube shown in fig. 2 a.

Referring to fig. 1 and 2a, in some embodiments of the invention, the return pole 21, the insulating base 22 with the central through hole 221 and the set of emitter electrodes 23 together form the working portion 16.

Referring to fig. 2a and 2b, one end of the loop pole 21 is fixedly connected to one end of the insulating base 22, and the other end of the loop pole is accommodated in the handle connecting pipe 151, so that a space exists between the outer side wall of the loop pole 21 and the inner side wall of the handle connecting pipe 151 to serve as a fluid guide channel for saline to flow out of the handle connecting pipe 151 along the direction indicated by the solid closed arrow in fig. 2a, thereby completely covering the exposed part of the working part 16, namely the part of the working part 16 located outside the handle connecting pipe 151, avoiding the problem that the saline cannot normally flow out due to small covering area of a drip nozzle and blocking of tissue fragments in the prior art, thereby hindering the operation, and improving the use safety.

The suction conduit 123 penetrates the handle connecting tube 151 to communicate with the central through hole 221, and tissue fragments and waste fluid generated by the operation of the transmitting electrode assembly 23 are sequentially extracted out of the human body through the central through hole 221 and the suction conduit 123 in the direction indicated by the right-angle arrow in fig. 2 a.

In some embodiments of the present invention, the insulating base 22 is a ceramic base.

Fig. 3 is a schematic view showing another assembling structure between the working part and the handle connecting pipe shown in fig. 1.

Referring to fig. 1 and 3, the return pole 21, the insulating base 22, and the sheet-shaped emitter 31 form the working portion 16, a portion of the return pole 21 is sleeved on the insulating sleeve 152, and an outer side wall of the return pole 21 is tightly attached to an inner side wall of the handle connecting tube 151, so as to enhance sealing performance. The exposed part of the loop pole 21, namely the part located outside the handle connecting pipe 151, is provided with a plurality of liquid guiding through holes 211, the physiological saline passes through the inner side wall of the loop pole 21 and the liquid guiding channel formed between the outer side wall of the suction catheter 123 along the direction shown by the solid closed arrow in fig. 3 flows out from the liquid guiding through holes 211, and the liquid guiding through holes 211 surround the outer side wall of the loop pole 21, so that the exposed part of the working part 16, namely the part of the working part 16 located outside the handle connecting pipe 151, is beneficial to realizing full-coating instillation.

In some embodiments of the present invention, the liquid guiding through holes 211 are disposed around the outer sidewall of the loop electrode 21 and are arranged in at least two rows along the axial direction of the loop electrode 21.

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

In some embodiments of the invention, the handle comprises a fixed base.

Fig. 4a is a schematic structural diagram of a fixing base according to an embodiment of the invention. FIG. 4b is a cross-sectional view of the anchor shown in FIG. 4a taken along line A1-A2. Fig. 4c is a schematic view of the assembly structure between a portion of the instillation conduit and the aspiration conduit shown in fig. 1 and the holder shown in fig. 4 a.

Referring to fig. 4a to 4c, the fixing base 4 includes a U-shaped portion 41, an abutting pipe 42, and a receiving pipe 43 connected in sequence. A drip docking socket 421 and a suction docking channel 422 located below the drip docking socket 421 are formed in the docking tube 42, so as to respectively allow one end of the drip tube 113 to be fixedly connected and the suction tube 123 to pass through.

Fig. 5a is a schematic view of an assembly structure of the ceramic holder, the emitter, the conductive adapter tube and the catheter shown in fig. 1 according to an embodiment of the present invention. Fig. 5b is a longitudinal section of fig. 5 a. Fig. 5c is a schematic view of an assembly structure between the regrind electrode according to an embodiment of the present invention and the ceramic holder and emitter shown in fig. 5 a.

Referring to fig. 5a to 5c, a plurality of emitters 52 are disposed on one end surface of the ceramic base 51, and a conductive adapter tube 54 is disposed between the open end of the suction conduit 123 and the ceramic base 51 and hermetically connected to the suction conduit 123 and the ceramic base 51, respectively. The suction catheter 123 is communicated with the outside through the conductive adapter tube 54 and the through hole 511 of the ceramic holder 51. The through hole 511 is a middle through hole of the ceramic base 51.

Referring to fig. 5c, a plurality of emitters 52 arranged side by side on one end face of the ceramic base 51 are arranged across the through holes 511 of the ceramic base 51 in the radial direction, wherein a regrinding electrode 55 is further arranged between one emitter close to the edge of the end face of the ceramic base 51 and the through hole 511 of the ceramic base 51, and the regrinding electrode 55 and the plurality of emitters 52 work synchronously to further cut and crush the fragmented tissues and prevent the through holes 511 of the ceramic base 51 from being blocked.

Further, referring to fig. 1 and 5b, the conductive adapter tube 54, which is electrically connected to the cable 132, can be used as a pulverization electrode to generate plasma inside the conductive adapter tube 54 to further pulverize tissue fragments and waste fluid entering the suction conduit 123, thereby preventing the suction conduit 123 from being clogged and increasing its suction performance.

Specifically, the conductive adapter 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 mainly comprises molybdenum or tungsten.

Specifically, since the crushed 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 holder 51, the inner diameter of the conductive adapter tube 54 connected to the suction catheter 123 is designed to be smaller than the inner diameter of the suction catheter 123, which can contribute to increase the suction force of the suction catheter 123.

Fig. 6 is a schematic view of the assembly structure of the cable shown in fig. 1 in the fixing base shown in fig. 4 a.

Referring to fig. 1, 4a, 5c and 6, one end of the suction conduit 123 penetrates the circuit pole 21, the cable 132 extends into the U-shaped portion 41, and one end of the cable is divided into a first connection line 1321 and a second connection line 1322. The first connection line 1321 is electrically connected to the return electrode 21, and the second connection line 1322 is welded to the crimp tube 61, and is electrically connected to the plurality of emitter electrodes 52, the regrind electrodes 55, and the conductive adapter tubes 54. Several of the emitter electrodes 52 are short-circuited with the electrically conductive adapter tubes 54 by means of the crimp tubes 61.

In some embodiments of the present invention, the built-in portions of the emitter electrodes 52 and the conductive adapter tubes 54 are housed in the return electrode 21. The built-in portion of the plurality of emitter electrodes 52 refers to a portion of the emitter electrodes 52 that is received in the handle connection tube 151 and extends toward the inside of the handle 14.

In some embodiments of the present invention, the built-in portions of the emitter electrodes 52 and the conductive adapter tubes 54 are further housed in an insulating tube, thereby electrically isolating the return electrode 21.

Referring to fig. 2a and 5c, the set of emitter electrodes 23 and the plurality of emitters 52 are each composed of single-pin emitters.

Fig. 7 is a schematic structural diagram of a single-pin emitter according to an embodiment of the present invention.

Referring to fig. 7, the single-pin emitter 7 has a U-shaped pin structure, the first electrode 71 and the second electrode 72 of the single-pin emitter 7, which are parallel to each other, have different lengths, and both ends of the third electrode 73 have bent structures (not shown) to be connected to the first electrode 71 and the second electrode 72, respectively.

Referring to fig. 1, 5a and 7, when the single-needle emitter 7 is fixedly connected to the end surface of the ceramic holder 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 holder 51 to cut and ablate target tissue. The first electrode 71 penetrates the ceramic holder 51 to be electrically connected to the cable 132.

Specifically, referring to fig. 2a, 6 and 7, taking the emitter electrode group 23 as an example, the emitter electrode group 23 is composed of three single-pin emitter electrodes 7, the third electrodes 73 of each single-pin emitter electrode 7 are arranged in parallel, and the first electrode 71 of each single-pin emitter electrode 7 is shorted to the crimp tube 61 to be electrically connected with the second connection line 1322.

In some embodiments of the invention, the emitter comprises an electrode plate, a hollowed-out region is formed on the surface of the electrode plate, the hollowed-out region spans the middle through hole of the insulating base and is arranged opposite to the middle through hole of the insulating base, and the area of the hollowed-out region in the radial direction is not less than that of the middle through hole of the insulating base in the radial direction.

In some embodiments of the present invention, the emitter is the sheet emitter 31 shown in fig. 3, and the sheet emitter 31 includes the electrode sheet.

Fig. 8a is a schematic view of an assembly structure between the ceramic socket shown in fig. 5a and the sheet emitter shown in fig. 3. Fig. 8b is a schematic view of a structure of the sheet emitter shown in fig. 3.

Referring to fig. 3, 8a and 8b, the plate-shaped emitter 31 is configured by a first butterfly filter electrode 811, and a first long electrode 814, a first short electrode 812, a second short electrode 813 and a third short electrode 815 connected to the first butterfly filter electrode 811, the first butterfly filter electrode 811 is an electrode pad of the plate-shaped emitter 31, and the plate-shaped emitter 31 is disposed on the ceramic base 51. The surface of the first butterfly filter electrode 811 has two isosceles trapezoid through holes 816 which are mirror images of each other along a surface center line 818, and two right triangle through holes 817 which are mirror images of each other along a center line of the isosceles trapezoid hollow-out region 816. The first long electrode 814 and the third short electrode 815 are located on one side of the surface centerline 818, and the second short electrode 813 and the third short electrode 815 are located on the other side of the surface centerline 818.

Referring to fig. 1, 8a and 8b, the first long electrode 814 has a length greater than the first short electrode 812, the second short electrode 813 and the third short electrode 815 to penetrate the ceramic holder 51 and electrically connect with 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 face of the ceramic base 51.

Referring to fig. 6 and 8b, the first long electrode 814 is shorted to the crimping tube 61 to be electrically connected to the second connection line 1322.

Referring to fig. 8a and 8b, two isosceles trapezoid through holes 816 and four right triangle through holes 817 constitute a hollow area of the first butterfly filter electrode 811, and the hollow areas are oppositely disposed across the through hole 511 of the ceramic base 51, that is, the edge of the through hole 511 does not exceed the range defined by the hollow areas, so as to enhance the suction effect on the fragmented tissues.

Further, an area of the hollow area of the first butterfly filter electrode 811 in the radial direction is not smaller than an area of the through hole 511 in the radial direction.

Fig. 9 is another structural view of the sheet emitter shown in fig. 3.

Referring to fig. 3 and 9, the second butterfly filter electrode 91, the second long electrode 92 disposed 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 disposed on the opposite side of the second long electrode 92 along the second long electrode 92 as a mirror image of each other constitute the sheet-shaped emitter 31, and the second butterfly filter electrode 91 is an electrode sheet of the sheet-shaped emitter 31. The surface of the second butterfly filter electrode 91 is provided with chevron-shaped through holes 95 symmetrical along the center line of the surface of the second butterfly filter electrode 91.

Referring to fig. 1, 8a and 9, when the sheet-shaped emitter 31 shown in fig. 9 is disposed on the end surface of the ceramic base 51, the second long electrode 92 penetrates the end surface of the ceramic base 51 to be electrically connected to the cable 132, and 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 outside the end surface of the ceramic base 51, and the chevron-shaped through hole 95 is disposed across the through hole 511 to be opposite to each other, so as to enhance the suction effect on the block-shaped crushed tissue.

Specifically, the area of the chevron-shaped through hole 95 in the radial direction is not smaller than the area of the through hole 511 in the radial direction.

Specifically, referring to fig. 6 and 9, the second long electrode 92 is shorted to the crimping tube 61 to be electrically connected to the second connection line 1322.

Referring to fig. 8a, 9 and 10, the sheet emitter 31 shown in fig. 10 mainly differs from the sheet emitter 31 shown in fig. 9 in that: the third butterfly filter electrode 101 is an electrode sheet of the sheet-shaped emitter 31 shown in fig. 10, two oval through holes 102 that are mirror images of each other along a center line of the surface of the third butterfly filter electrode 101 are formed in the surface of the third butterfly filter electrode 101, and a hollow area surrounded by the two oval through holes 102 is arranged across the through hole 511 so as to be opposite to each other.

Specifically, the area of the hollow area surrounded by the two oval through holes 102 in the radial direction is not smaller than the area of the through hole 511 in the radial direction, so as to enhance the suction effect on the fragmented tissues.

Although the embodiments of the present invention have been described in detail hereinabove, it is apparent to those skilled in the art that various modifications and variations can be made to these embodiments. However, it is to be understood that such modifications and variations are within the scope and spirit of the present invention as set forth in the following claims. Moreover, the invention as described herein is capable of other embodiments and of being practiced or of being carried out in various ways.

Claims

1. The utility model provides a radio frequency plasma scalpel, includes instillation pipeline, attracts pipeline, cable pipeline and the handle, handle connecting pipe and the work portion of connecting in order, the work portion including the insulating seat that has the middle part through-hole and set up respectively in the projecting pole and the return circuit pole of two terminal surfaces of insulating seat, its characterized in that:

the radio frequency plasma scalpel further comprises a conductive connecting pipe;

the conductive connecting pipe is arranged at the opening end of the suction pipeline, and the inside of the suction pipeline is communicated with the middle through hole of the insulating seat to be used as a crushing electrode;

the open end of the suction pipeline sequentially penetrates through the handle and the handle connecting pipe and is contained in the loop pole, and one end of the loop pole extends into the handle through the open end of the handle connecting pipe so as to form a liquid guide channel between the handle connecting pipe and the suction pipeline;

the drip port of the drip line is communicated with the liquid guide channel through the interior of the handle;

one end of the cable pipeline is electrically connected with the loop pole and the emitting pole respectively through the handle.

2. The rf plasma surgical knife of claim 1, wherein the conductive adapter tube has an inner diameter that is smaller than an inner diameter of the suction line to increase suction of the suction line.

3. The rf plasma scalpel of claim 1, wherein the inner sidewall of the handle connector is not attached to the outer sidewall of the loop electrode, such that the fluid channel is formed between the inner sidewall of the handle connector and the outer sidewall of the loop electrode, thereby facilitating the full-covering instillation of the exposed portion of the working portion.

4. The rf plasma scalpel according to claim 1, wherein the handle connecting tube is attached to a portion of the loop electrode, which is in contact with the loop electrode, so as to form the liquid guiding channel between an inner sidewall of the loop electrode and an outer sidewall of the suction pipeline, a plurality of liquid guiding through holes are formed in an exposed portion of the loop electrode, and the plurality of liquid guiding through holes are disposed around the outer sidewall of the loop electrode, so as to facilitate full-coating instillation of the exposed portion of the working portion.

5. The rf plasma surgical knife of claim 1, wherein at least a portion of the aspiration line is an elastic hose effective to reduce electrode chatter during aspiration.

6. The rf plasma surgical knife of claim 1, wherein the conductive adapter tube consists essentially of a high temperature resistant conductive material.

7. The rf plasma scalpel of claim 6, wherein the high temperature resistant conductive material is a high temperature resistant metallic material.

8. The rf plasma scalpel of claim 7, wherein the refractory metal material consists essentially of either or both molybdenum or tungsten.

9. The rf plasma scalpel of claim 1, wherein the cable conduit includes a first connection line electrically connected to the return circuit and a second connection line electrically connected to the conductive adapter tube and the emitter electrode.

10. The rf plasma scalpel of claim 9, further comprising a crimp tube through which the second connecting wire electrically connects the conductive adapter tube and the emitter electrode, respectively.

11. The rf plasma surgical knife of claim 9, wherein the built-in portion of the emitter and the conductive adapter tube are housed inside the return pole.

12. The rf plasma scalpel of claim 11, further comprising an insulating tube, the built-in portion of the emitter electrode and the conductive adapter tube being received in the insulating tube such that neither the built-in portion of the emitter electrode nor the conductive adapter tube is in electrical contact with the return electrode.

13. The rf plasma scalpel according to claim 1, further comprising a regrind electrode disposed between the emitter and the central through hole of the insulating base to work synchronously with the emitter.

14. The rf plasma scalpel according to claim 1, wherein the emitter comprises an electrode sheet, a hollowed-out region is formed on a surface of the electrode sheet, the hollowed-out region spans the middle through hole of the insulating base and is disposed opposite to the middle through hole of the insulating base, and an area of the hollowed-out region in the radial direction is not smaller than an area of the middle through hole of the insulating base in the radial direction.