CN112914716A

CN112914716A - Multifunctional high-frequency instrument

Info

Publication number: CN112914716A
Application number: CN202110259136.4A
Authority: CN
Inventors: 唐志; 张锋; 解欢; 范茗侨; 沙德青; 刘春俊
Original assignee: Micro Tech Nanjing Co Ltd
Current assignee: Micro Tech Nanjing Co Ltd
Priority date: 2021-03-09
Filing date: 2021-03-09
Publication date: 2021-06-08

Abstract

The invention relates to the technical field of medical instruments, in particular to a multifunctional high-frequency instrument, which aims to solve the problems of low operation efficiency, high operation risk and the like caused by frequent instrument replacement in the endoscopic operation process in the prior art. The multifunctional high-frequency apparatus comprises an electrode part, wherein the electrode part comprises a cutting knife and an insulating part; the insulating part is provided with an inner cavity; the cutting knife is provided with a first working mode and a second working mode; in a first working mode, a cutter head of the cutter extends into an inner cavity of the insulating part; in a second mode of operation, the cutting tip of the cutting blade is disengaged from the insulator. The multifunctional high-frequency instrument provided by the scheme can at least integrate the functions of the IT knife and the T knife, and doctors can perform corresponding operation according to needs, so that the time for replacing the instrument is saved, and the operation efficiency is improved.

Description

Multifunctional high-frequency instrument

Technical Field

The invention relates to the technical field of medical instruments, in particular to a multifunctional high-frequency instrument.

Background

Since the birth of endoscope technology, the endoscope technology goes through the stages from disease diagnosis to disease treatment, and the endoscope technology is very effective and reliable for treating some digestive diseases and even becomes the first-choice therapy for treating some diseases. With the development of endoscopic techniques in recent years, endoscopic tissue biopsy, EMR (endoscopic mucosal resection), and ESD (endoscopic mucosal dissection) have been widely used, and are becoming the first choice for treatment of gastrointestinal hemorrhage, polypectomy, and early cancer. Among them, ESD plays a key role in the discovery, diagnosis and ablation of early cancers.

In clinical departments, direct observation and treatment of various pathological conditions in a body cavity for the purpose of diagnosis, determination of a treatment result, determination of a treatment course, and the like are required to be performed by a highly invasive surgical method such as an open abdomen or an open chest. However, with the recent spread of endoscopic surgical instruments, endoscopes such as laparoscopes and thoracoscopes, which have a smaller incision wound, have become available.

Endoscopic Submucosal Dissection (ESD) refers to an endoscopic minimally invasive technique that utilizes high frequency instruments to perform submucosal dissection on lesions larger than 2 cm. Because the area of an ESD excision mucosa is large, the operation process is complicated and generally consumes a long time, and the operation is required to be performed under the guidance of an endoscope. The endoscope firstly enters a human body to find diseased tissues, then the high-frequency incision knife enters the human body through an endoscope clamping channel to mark the diseased tissues, the instrument is withdrawn after marking, the injection needle is used for submucosal injection, the proper high-frequency incision knife is used for cutting and stripping after injection, if bleeding occurs in the operation, the hemostatic forceps are required to be replaced for electric coagulation hemostasis, and about 1-2 hours can be used for successfully excising about 3cm of early cancer diseased tissues. Need frequently to change the apparatus in the operation, not only loaded down with trivial details but also consuming time, be unfavorable for patient's operation, the normal saline that injects in the operation process can run off along with the operation time moreover, and this process of normal saline that needs to inject again can waste a large amount of time, can increase because the normal saline loses in the operation can not in time be replenished and increased the fenestrate risk in the operation and the time of extension operation, has brought the misery for the patient.

Disclosure of Invention

The invention aims to provide a multifunctional high-frequency instrument, which aims to solve the problems of low operation efficiency, high operation risk and the like caused by frequent instrument replacement in the endoscopic operation process in the prior art.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

a multifunctional high-frequency instrument comprises an electrode part, wherein the electrode part comprises a cutting knife and an insulating part;

the insulating part is provided with an inner cavity;

the cutting knife has conductive performance and has a first working mode and a second working mode;

in the first working mode, the cutter head of the cutter extends into the inner cavity of the insulating part;

in the second working mode, the cutter head of the cutter is separated from the insulating piece.

Further, in the present invention,

the electrode part further comprises an elastic part, the elastic part is arranged on the inner wall of the insulating part, and the elastic part is configured to deform under a stressed state so that the tool bit is separated from or enters the insulating part.

Further, in the present invention,

the elastic member is integrally provided with the insulating member.

Further, in the present invention,

the elastic piece is provided with at least one positioning structure,

the elastic part is provided with at least one positioning structure, the positioning structure is arranged on the inner wall of the elastic part and protrudes towards the central axis direction of the elastic part, and the positioning structure is used for limiting the cutter head in the insulating part.

Further, in the present invention,

the elastic piece is transversely provided with a plurality of positioning structures, and height difference exists between the adjacent positioning structures.

Further, in the present invention,

the cutting knife comprises a knife head and a knife rod, the outer diameter of the knife head is larger than that of the knife rod, and the side face of the knife head close to the knife rod is abutted to the positioning structure when the knife rod is assembled inside the insulating part.

Further, in the present invention,

the interior of the insulating part is provided with an inner spiral structure, the tool bit is provided with an outer spiral structure, and the outer spiral structure is matched with the inner spiral structure.

Further, in the present invention,

the insulating part is provided with an insulating part channel, and the insulating part channel is communicated with the inner cavity of the insulating part.

Further, in the present invention,

the first pipe part comprises a first limiting part, a first pulling part and a first outer pipe;

a first telescopic hole for the telescopic cutting knife to extend and retract is formed in the first limiting piece;

the first pulling portion is connected with the cutting knife, and a first flow channel is arranged in the first pulling portion along the axis direction.

Further, in the present invention,

the cutting knife is provided with a knife hole penetrating through the cutting knife along the axis direction, and the knife hole is communicated with the first flow channel.

Further, in the present invention,

the first pulling part comprises a first connecting pipe and a spiral pipe; one end of the first connecting pipe is connected to one end of the cutting knife, and the other end of the first connecting pipe is connected to the spiral pipe; the spiral tube stretches and retracts to drive the cutting knife to stretch and retract relative to the first limiting part.

Further, in the present invention,

the spiral pipe is characterized by further comprising a coating film, and the coating film is coated outside the first connecting pipe and the spiral pipe.

Further, in the present invention,

the first outer pipe is sleeved outside the first limiting piece and the coating film; the first outer pipe is abutted to the protruding position of the end of the first limiting part, and a gap is formed between the first outer pipe and the coating film.

Further, in the present invention,

the first retaining member is provided with a first receiving area configured to receive at least a portion of a tool tip in the form of a slot.

Further, in the present invention,

the first operating part is connected with the first pulling part and can drive the first pulling part to stretch and retract;

the first operation part is provided with a first conductive plug and a first injection port, and the first conductive plug, the first pulling part and the cutting knife form a conductive loop; the first injection port is communicated with the first flow channel of the first pulling part.

Further, in the present invention,

the second pipe part comprises a second limiting part, a second pulling part and a second outer pipe sleeved outside the second limiting part and the second pulling part;

the cutting knife is inserted into the second limiting piece, and a first gap is formed between the cutting knife and the second limiting piece;

the second pulling part is connected with the cutting knife, and a second gap is formed between the second pulling part and the second outer tube;

the first gap and the second gap are conductive.

Further, in the present invention,

the second pulling part comprises a second connecting pipe and a pull cable, one end of the second connecting pipe is connected with the cutting knife, and the other end of the second connecting pipe is connected with the pull cable.

Further, in the present invention,

the head of the second retaining member is provided with a second receiving area configured to receive at least a portion of a tool bit in the form of a slot.

Further, in the present invention,

the second operation part is connected with the second pulling part and can drive the second pulling part to stretch and retract;

the second operation part is provided with a second conductive plug; the second conductive plug, the second pulling part and the cutting knife form a conductive loop;

the second operation part is provided with a second injection port which is communicated with the second gap.

By combining the technical scheme, the technical effect analysis realized by the invention is as follows:

the invention provides a multifunctional high-frequency instrument, which comprises an electrode part, wherein the electrode part comprises a cutting knife and an insulating part; the insulating part is provided with an inner cavity; the cutting knife has conductive performance, and the cutting knife has a first working mode and a second working mode; in a first working mode, a cutter head of the cutter extends into an inner cavity of the insulating part; in a second mode of operation, the cutting tip of the cutting blade is disengaged from the insulator.

The instrument can be used as an IT knife when the insulator is mounted on the front end of the cutting blade and as a T-knife when the insulator is removed from the cutting blade. The utility model integrates the functions of the IT knife and the T knife, and doctors can perform corresponding operations according to needs, thereby saving the time for replacing instruments and improving the operation efficiency.

Drawings

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

FIG. 1 is a schematic structural view of a first multifunctional high-frequency device according to an embodiment of the invention, in which a cutting knife is in an extended state when a tool bit is not provided with an insulating member;

FIG. 2 is a schematic structural diagram illustrating a retracted state of the cutting blade when the tool bit of the first multifunctional high-frequency device is not provided with the insulating member according to the embodiment of the invention;

FIG. 3 is a schematic structural view of a first multifunctional high-frequency instrument tool bit provided with an insulating part according to an embodiment of the invention;

FIG. 4 is a partially enlarged view of a first tube portion of a first multifunctional high-frequency device according to an embodiment of the invention;

fig. 5 is a schematic view of a first electrode part according to an embodiment of the present invention in a state where the insulator is assembled with the tool bit;

fig. 6 is a schematic view of a first electrode part in the middle of the process of the tool bit being pulled out of the insulator according to the embodiment of the invention;

FIG. 7 is a schematic view of a first electrode portion with a cutting tip completely removed from an insulator according to an embodiment of the present invention;

fig. 8 is a schematic view of a second electrode part provided in the embodiment of the present invention during the process when the tool head is pulled out of the insulator;

FIG. 9 is a schematic view of a second electrode portion of the present invention with a cutting tip fully removed from the insulator;

FIG. 10 is a schematic structural diagram of a second multifunctional high-frequency device provided by an embodiment of the invention, wherein the cutter head is provided with an insulating part;

FIG. 11 is a schematic view of a second multifunctional high-frequency device provided in accordance with an embodiment of the present invention, wherein the cutting blade is in an extended state when the cutting head is not provided with the insulating member;

FIG. 12 is a schematic view of the second multifunctional high-frequency device provided by the embodiment of the invention, wherein the cutting knife is in a retracted state when the knife head is not provided with the insulating member;

fig. 13 is a schematic view of an insulating member of a first electrode portion provided with an insulating member passage according to an embodiment of the present invention;

fig. 14 is a schematic view of an insulating member provided with an insulating member passage of a second electrode portion according to an embodiment of the present invention;

fig. 15 is a schematic structural view of a first modification of the positioning structure of the insulating member according to the embodiment of the present invention;

fig. 16 is a structural view showing a second modification of the positioning structure of the insulating member according to the embodiment of the present invention;

fig. 17 is a schematic structural view of a third modification of the positioning structure of the insulating member according to the embodiment of the present invention;

fig. 18 is a schematic structural view of a fourth modification of the positioning structure of the insulating member according to the embodiment of the present invention;

fig. 19 is a schematic structural view of a fifth modification of the positioning structure of the insulating member according to the embodiment of the present invention;

fig. 20 is a schematic structural view of a sixth modification of the positioning structure of the insulating member according to the embodiment of the present invention.

Icon: 100-an electrode portion; 110-a cutter; 120-an insulator; 130-an elastic member; 131-a positioning structure; 111-a cutter head; 112-a cutter bar; 001-knife hole; 002-a first flow channel; 003-first gap; 004-second gap; 121-insulator channel; 200-a first tube portion; 210-a first stop; 220-a first pull; 221-a first connection tube; 222-a spiral pipe; 230-a cover film; 240-a first outer tube; 300-a second tube portion; 310-a second limiting member; 320-a second pull; 330-a second outer tube; 321-a second connecting tube; 322-a pull cable; 400-a first operating part; 410-a first conductive plug; 420-a first injection port; 500-a second operating part; 510-a second conductive plug; 520-second injection port.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments 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 drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The present embodiment provides a multifunctional high-frequency instrument, referring to fig. 1-20 together, the instrument comprises an electrode portion 100, the electrode portion 100 comprises a cutting knife 110 and an insulating member 120; the insulator 120 is provided with an inner cavity; the cutting knife 110 has conductive performance, and the cutting knife 110 has a first working mode and a second working mode; in the first operation mode, the cutting head 111 of the cutting blade 110 extends into the inner cavity of the insulating member 120; in the second mode of operation, the cutting tip 111 of the cutting blade 110 is disengaged from the insulator 120.

The multifunctional high-frequency instrument in the embodiment can be used as an IT (information technology) knife when the cutting knife 110 with the conductive performance extends into the insulating part 120, and can be used as a T knife when the cutting knife 110 with the conductive performance is separated from the insulating part 120, and the switching between the IT knife and the T knife can be realized through the operations of 'removing' and 'extending in'. The utility model integrates the functions of the IT knife and the T knife, and doctors can perform corresponding operations according to needs, thereby saving the time for replacing instruments and improving the operation efficiency.

In an alternative of this embodiment, it is preferable that the insulating member 120 is provided in an open cylindrical structure, and a central axis of the opening is parallel to an axis of the cutting blade 110. IT is important to note that the instrument functions as an IT knife when the cylindrical insulator 120 is mounted on the cutting blade 110, and that the individual cutting blade 110 may function as a T-blade when the cylindrical insulator 120 is separated from the cutting blade 110.

As for the assembling manner of the insulator 120 and the cutting blade 110, various arrangements may be provided, specifically:

mode one, the insulating member 120 and the cutting blade 110 are fastened by the elastic member 130, specifically:

the elastic member 130 is disposed inside the insulating member 120, and the elastic member 130 is configured to deform under a stress state so as to allow the tool bit 111 to be separated from or enter the insulating member 120. Further, the central axis of the elastic member 130 coincides with the central axis of the opening. Further, the elastic member 130 is preferably provided as a metal member. In this embodiment, the elastic element 130 may be made of a material different from that of the insulating element 120, and the elastic element 130 may also be a part of the insulating element 120, for example, the elastic element 130 and the insulating element 120 are integrally formed.

The side surface of the insulating member 120 parallel to the axis of the cutting blade 110 is used as an attachment surface, and the outer surface of the elastic member 130 is disposed on the attachment surface, but the transverse length of the elastic member 130 may be shorter than the transverse length of the attachment surface. Because the elastic member 130 has a stress deformation performance and can restore to the original state after losing the external force, the tool bit 111 extends into the insulating member 120 by squeezing the elastic member 130, and after the tool bit 111 is assembled in place, the elastic member 130 can apply a resistance force to the tool bit 111 to prevent the tool bit 111 from moving outwards after restoring to the original state, so that the insulating member 120 and the cutting knife 110 can be matched.

The specific shape and structure of the elastic member 130 are described in detail as follows:

the elastic member 130 is provided with at least one positioning structure 131, the positioning structure 131 is disposed on an inner wall of the elastic member 130 and protrudes toward a central axis direction of the elastic member 130, and the positioning structure 131 is used for limiting the cutter head 111 in the insulating member 120. The aperture that location structure 131 formed is less than the aperture of elastic component main part, receive elastic component 130 under the squeezing action of tool bit 111, elastic component 130 takes place the deformation, to the direction shrink of keeping away from the axis, after tool bit 111 extrudees to target in place, elastic component 130 resumes to original state gradually, at this moment, location structure 131 is located the right flank portion of tool bit 111 (with the visual angle in the drawing), and can support tool bit 111 tightly in the accommodation area that forms between the vertical inside wall of location structure 131 and insulating part 120, at this moment, location structure 131 can avoid tool bit 111 to deviate from to the outside, thereby good fastening effect has been realized. Of course, as a modification of the above, the positioning structure 131 may be provided in other forms, for example, see fig. 15, 16 and 17. The cross-section of the insulator 120 in fig. 15 is configured as a regular triangle with locating structures 131 at the sharp corners. The insulator 120 in fig. 16 is configured in cross-section as a right triangle with a locating feature 131 at the lower cusp. The cross section of the insulating member 120 in fig. 17 is a trapezoid structure, the lower portion of the insulating member is a positioning structure 131, and a plurality of positioning structures 131 may be arranged at intervals in the transverse direction, and thus, multiple locking may be achieved, for example, referring to fig. 18, 19 and 20, the positioning structure 131 in fig. 18 is arranged in the transverse direction to form a saw tooth structure, and the heights of the saw teeth decrease from inside to outside in sequence. The positioning structure 131 in fig. 19 is provided in plurality in the lateral direction, forming a saw tooth structure with the highest saw tooth in the middle. The positioning structure 131 in fig. 20 is provided in plurality in the lateral direction, forming a saw tooth structure, and the heights of the saw teeth increase from the inside to the outside.

In this embodiment, the cutting blade 110 includes a cutting head 111 and a cutter bar 112, the outer diameter of the cutting head 111 is larger than the outer diameter of the cutter bar 112 to form a T-shaped structure, the outer side surface of the cutting head 111 is an arc surface, and the side surface of the cutting head 111 adjacent to the cutter bar 112 is a plane. The side of the cutting head 111 adjacent the shank 112 abuts the locating formation 131 when the cutting blade 110 is fitted within the insulator 120. In this embodiment, the internal structure of the cutting knife 110 may be set according to the requirement of practical use, for example, a through hole penetrating through both ends may be formed along the central axis direction of the cutting knife 110, or the cutting knife 110 may be set as a solid knife bar 112.

Referring to fig. 5, 6 and 7, the process of the cutting blade 110 being pulled out of the insulating member 120 is schematically illustrated, wherein fig. 5 is a schematic view of the cutting blade 110 being assembled in the insulating member 120, fig. 6 is a schematic view of the cutting blade 110 being pressed against the elastic member 130 in the middle of being pulled out to the outside, and fig. 7 is a schematic view of the cutting blade 110 being completely pulled out of the insulating member 120. The assembly process is the reverse of the above process and will not be described further herein.

Mode two, insulator 120 and cutting knife 110 are connected through the helicitic texture, specifically:

an inner spiral structure is arranged inside the insulating part 120, and an outer spiral structure is arranged at the head of the cutting knife 110, wherein the outer spiral structure is matched with the inner spiral structure.

In this mode, the cutting knife 110 includes a cutting head 111 and a knife bar 112, the cutting head 111 is set as a step structure, specifically, the cutting head 111 can be set as a secondary step structure, and the height of the cutting head 111 gradually decreases from the end to the direction of the knife bar 112. The outermost step feature of the tool tip 111 can be rotated into the inner helix inside the insulator 120. In this embodiment, the inner structure of the cutting knife 110 may be set according to the requirement of practical use, for example, a through hole penetrating through both ends may be formed along the central axis direction of the cutting knife 110, or the cutting knife 110 may be set to be a solid structure.

Referring to fig. 8 and 9, a schematic view of a process of the cutting blade 110 coming out of the insulating member 120 is shown, wherein fig. 8 is a schematic view of an intermediate process of the cutting blade 110 coming out of the insulating member 120, and fig. 9 is a schematic view of the cutting blade 110 completely coming out of the insulating member 120. The assembly process is the reverse of the above process and will not be described further herein.

The multifunctional high-frequency electric appliance provided by the scheme is also provided with a tube part, wherein the tube part is connected with the electrode part 100 and is used for driving the electrode part 100 to stretch and form an injection channel by matching with the electrode part 100. The form of the tube portion may also be provided in various forms.

In the first embodiment, the liquid flow channel is formed inside the cutting blade 110:

in this mode, the pipe portion sets up to first pipe portion 200, and cutting knife 110 has seted up along the axis direction and has run through sword hole 001, and just first pipe portion 200 is provided with the first runner 002 with sword hole 001 intercommunication along self axis direction, and first runner 002 forms the liquid runner with sword hole 001 intercommunication.

Further, the first tube part 200 includes a first stopper 210, a first pulling part 220, and a first outer tube 240; a first telescopic hole for the cutting knife 110 to extend and retract is arranged in the first limiting member 210; the first pulling portion 220 is connected with the cutting knife 110, and the first pulling portion 220 is provided with a first flow channel 002 communicated with the knife hole 001 along the axial direction, and the first flow channel 002 is communicated with the knife hole 001.

Further, the first position-limiting member 210 is a T-shaped structure, and the end thereof protrudes to the outside. The first limiting member 210 is provided with a through hole along the axis direction thereof, and the cutter bar 112 of the cutting knife 110 is inserted into the through hole and can move telescopically relative to the first limiting member 210.

Further, the first limiting member 210 is provided with a first receiving area configured to receive at least a portion of the tool bit 111 in the form of a notch.

Further, an end of the first pulling portion 220 abuts against an end of the first limiting member 210, and the first pulling portion 220 and the end of the first limiting member 210 can be separated from each other, specifically referring to fig. 2, a schematic structural diagram of the first pulling portion 220 pulling the tool bar 112 to separate the first pulling portion 220 from the first limiting member 210 is shown in fig. 2.

Further, the first pulling part 220 includes a first connection pipe 221 and a coil 222; one end of the first connection pipe 221 is sleeved on one end of the cutter bar 112 far away from the cutter head 111, and the other end is inserted into the spiral pipe 222; the spiral tube 222 expands and contracts to drive the cutting blade 110 to expand and contract relative to the first limiting member 210.

Further, the outer surface of the first connection pipe 221 is provided with a plurality of convex teeth arranged at intervals, thereby forming a saw-tooth shape on the outer surface of the connection pipe.

Further, the outer surface of the first pulling portion 220 is covered with a covering film 230, and the covering film 230 covers the outside of the connection pipe and the spiral pipe 222. In order to match the protruding tooth structure of the outer surface of the connecting pipe, the covering film 230 has a matched sawtooth structure, so that the covering film 230 and the connecting pipe can be tightly matched.

Further, the first outer tube 240 is sleeved outside the first limiting member 210 and the covering film 230; the first outer tube 240 abuts against a protruding position of one end of the first stopper 210, and a gap is formed between the first outer tube 240 and the coating film 230. See fig. 4 for the specific location of the gap.

Specifically, referring to fig. 1 to 4, the lumen of the spiral tube 222 is communicated with the knife hole 001, and the liquid flows from the spiral tube 222 to the knife hole 001 and then flows out from the port of the knife hole 001, so as to wash the focus or inject the liquid to the submucosal layer to form a liquid cushion.

In this embodiment, an insulator channel 121 may be formed in the insulator 120, the insulator channel 121 may be abutted against the tool hole 001, and the liquid may flow out from the insulator channel 121. Referring to fig. 13 and 14, fig. 13 is a schematic view illustrating an insulating member channel of an insulating member of a first electrode portion according to an embodiment of the present invention; fig. 14 is a schematic view of an insulating member provided with an insulating member passage of the second electrode portion according to the embodiment of the present invention.

In the second mode, the liquid flow channel is formed outside the cutting knife 110;

in this manner, the pipe portion is provided as a second pipe portion 300, and the second pipe portion 300 includes a second limiting member 310, a second pulling portion 320, and a second outer pipe 330 sleeved outside the second limiting member 310 and the second pulling portion 320; the cutting blade 110 is inserted into the second limiting member 310, and a first gap 003 is formed between the cutting blade 110 and the second limiting member 310; the second limiting member 310 is inserted into the cutting blade 110, and a first gap 003 with two through ends is formed between the second limiting member 310 and the outer wall of the cutting blade 110; the second pulling part 320 is connected with one side of the cutting knife 110, which is far away from the cutter head 111, and a second gap 004 is formed between the second pulling part 320 and the second outer tube 330; the first gap 003 and the second gap 004 are conductive. The second pulling portion 320 includes a second connecting pipe 321 and a cable 322, one end of the second connecting pipe 321 is connected to the cutting blade 110, and the other end is connected to the cable 322.

Referring to fig. 11 and 12, when the injection operation needs to be performed, in the process of extending and retracting the cutting blade 110, the first gap 003 and the second gap 004 are always conducted, and the liquid flows out from the port of the first gap 003 through the second gap 004, so that the lesion can be irrigated or the liquid can be injected into the submucosa to form a liquid cushion.

The multi-functional high frequency electric apparatus that this scheme provided still is provided with the operation portion, and the operation portion links to each other with foretell tub of portion for it is flexible to drive tub portion, perhaps to the intraductal injection liquid of pipe.

Specifically, the method comprises the following steps:

under the condition that the cutting knife 110 is provided with a through flow passage, the operating part is set as a first operating part 400, the first operating part 400 is connected with the first pulling part 220, and the first operating part 400 can drive the first pulling part 220 to stretch and retract; wherein, the first operating part 400 is provided with a first conductive plug 410 and a first injection port 420, and the first conductive plug 410, the first pulling part 220 and the cutting blade 110 form a conductive loop; the first injection port 420 is communicated with the first flow channel 002 of the first pulling portion 220.

Or,

under the condition that the cutting knife 110 is provided with a solid structure, the operating part is provided with a second operating part 500, the second operating part 500 is connected with the second pulling part 320, and the second operating part 500 can drive the second pulling part 320 to stretch and contract; the second operating part 500 is provided with a second conductive plug 510; the second conductive plug 510, the second pulling portion 320 and the cutting blade 110 form a conductive loop; the second operating part 500 is provided with a second injection port 520 communicating with the second gap 004.

In combination with the above description, the multifunctional high-frequency electric apparatus provided by the scheme can at least realize the following functions:

liquid injection action: cutting knife 110 stretches out to work station, arranges cutting knife 110 in submucosal layer, injects liquid at submucosal layer's notes liquid mouth, and liquid injection is to submucosal layer part, forms the liquid pad, prevents the damage of electrotome to deep tissue.

Marking action: the high-frequency power is connected through the conductive plug, so that operations such as marking can be performed;

cutting and peeling action: after the cutting blade 110 is extended, the head of the cutting blade 110 can be cut and peeled off.

To sum up, this apparatus has integrated T sword, IT sword and injection function, has realized trinity, and the doctor can carry out corresponding operation as required, can constantly wash the operation incision when the operation and make the operation field of vision in going on more clear, conveniently effectively in time cut pathological change tissue, has saved the time that the apparatus was changed, has improved operation efficiency. In addition, the device can inject liquid to the local part of the submucosa to form a liquid pad, thereby preventing the electric knife from damaging the deep tissues. And the multifunctional high-frequency instrument has simple structure and low cost.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multifunctional high-frequency instrument, characterized by comprising an electrode part (100), wherein the electrode part (100) comprises a cutting knife (110) and an insulating part (120);

the insulating part (120) is provided with an inner cavity;

the cutting knife (110) has conductive performance, and the cutting knife (110) has a first working mode and a second working mode;

in the first working mode, the cutter head (111) of the cutter (110) extends into the inner cavity of the insulating part (120);

in the second mode of operation, the cutting head (111) of the cutting blade (110) is disengaged from the insulating member (120).

2. The multifunctional high-frequency instrument according to claim 1, wherein the electrode portion (100) further comprises an elastic member (130), the elastic member (130) is disposed on an inner wall of the insulating member (120), and the elastic member (130) is configured to deform under a force to allow the tool bit (111) to escape from or enter the insulating member (120).

3. Multifunctional high-frequency instrument according to claim 2,

the elastic member (130) is integrally provided with the insulating member (120).

4. Multifunctional high-frequency instrument according to claim 2,

the elastic piece (130) is provided with at least one positioning structure (131), the positioning structure (131) is arranged on the inner wall of the elastic piece (130) and protrudes towards the central axis direction of the elastic piece (130), and the positioning structure (131) is used for limiting the cutter head (111) in the insulating piece (120).

5. Multifunctional high-frequency instrument according to claim 4,

the elastic piece (130) is transversely provided with a plurality of positioning structures (131), and height differences exist between the adjacent positioning structures (131).

6. Multifunctional high-frequency instrument according to claim 4,

the cutting knife (110) comprises a cutting head (111) and a knife rod (112), the outer diameter of the cutting head (111) is larger than that of the knife rod (112), and the side face, close to the knife rod (112), of the cutting head (111) abuts against the positioning structure (131) when the knife rod (112) is assembled inside the insulating piece (120).

7. Multifunctional high-frequency instrument according to claim 1,

an inner spiral structure is arranged inside the insulating part (120), an outer spiral structure is arranged on the cutter head (111), and the outer spiral structure is matched with the inner spiral structure.

8. Multifunctional high-frequency instrument according to one of claims 1 to 7,

the insulating piece (120) is provided with an insulating piece channel (121), and the insulating piece channel (121) is communicated with the inner cavity of the insulating piece (120).

9. Multifunctional high-frequency instrument according to claim 1,

the first pipe part (200) is further included, and the first pipe part (200) comprises a first limiting part (210), a first pulling part (220) and a first outer pipe (240);

a first telescopic hole for the telescopic cutting knife (110) is formed in the first limiting piece (210);

the first pulling portion (220) is connected with the cutting knife (110), and a first flow channel (002) is arranged in the first pulling portion (220) along the axis direction.

10. The multifunctional high-frequency instrument according to claim 9,

the cutting knife (110) is provided with a knife hole (001) penetrating through the cutting knife (110) along the axis direction, and the knife hole (001) is communicated with the first flow channel (002).

11. The multifunctional high-frequency instrument according to claim 9,

the first pulling part (220) includes a first connection pipe (221) and a spiral pipe (222); one end of the first connecting pipe (221) is connected to one end of the cutting knife (110), and the other end of the first connecting pipe (221) is connected to the spiral pipe (222); the spiral tube (222) stretches and retracts to drive the cutting knife (110) to stretch and retract relative to the first limiting piece (210).

12. The multifunctional high-frequency instrument according to claim 11,

the spiral pipe further comprises a coating film (230), and the coating film (230) is coated on the first connecting pipe (221) and the outer part of the spiral pipe (222).

13. The multifunctional high-frequency instrument according to claim 12,

the first outer pipe (240) is sleeved outside the first limiting piece (210) and the coating film (230); the first outer pipe (240) is abutted to the protruding position of the end of the first stopper (210), and a gap is formed between the first outer pipe (240) and the coating film (230).

14. The multifunctional high-frequency instrument according to any one of claims 9 to 13,

the first retaining member (210) is provided with a first receiving area configured to receive at least a portion of the cutting head (111) in the form of a slot.

15. The multifunctional high-frequency instrument according to any one of claims 9 to 13,

the first operating part (400) is connected with the first pulling part (220), and the first pulling part (220) can be driven by the first operating part (400) to stretch;

the first operating part (400) is provided with a first conductive plug (410) and a first injection port (420), and the first conductive plug (410), the first pulling part (220) and the cutting knife (110) form a conductive loop; the first injection port (420) is communicated with the first flow channel (002) of the first pulling part (220).

16. Multifunctional high-frequency instrument according to claim 1,

the pipe fitting further comprises a second pipe part (300), wherein the second pipe part (300) comprises a second limiting part (310), a second pulling part (320) and a second outer pipe (330) sleeved outside the second limiting part (310) and the second pulling part (320);

the cutting knife (110) is inserted into the second limiting piece (310), and a first gap (003) is formed between the cutting knife (110) and the second limiting piece (310);

the second pulling part (320) is connected with the cutting knife (110), and a second gap (004) is formed between the second pulling part (320) and the second outer tube (330);

the first gap (003) and the second gap (004) are conductive.

17. The multifunctional high-frequency instrument according to claim 16,

the second pulling part (320) comprises a second connecting pipe (321) and a pull cable (322), one end of the second connecting pipe (321) is connected with the cutting knife (110), and the other end of the second connecting pipe is connected with the pull cable (322).

18. Multifunctional high-frequency instrument according to claim 16 or 17,

the head of the second retaining member (310) is provided with a second receiving area configured to receive at least a portion of the cutting head (111) in the form of a slot.

19. The multifunctional high-frequency instrument according to claim 18,

the second operating part (500) is connected with the second pulling part (320), and the second operating part (500) can drive the second pulling part (320) to stretch;

the second operation part (500) is provided with a second conductive plug (510); the second conductive plug (510), the second pulling part (320) and the cutting blade (110) form a conductive loop;

the second operation part (500) is provided with a second injection port (520), and the second injection port (520) is communicated with the second gap (004).