CN212234668U - Incision knife for endoscope - Google Patents

Incision knife for endoscope Download PDF

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Publication number
CN212234668U
CN212234668U CN202020494597.0U CN202020494597U CN212234668U CN 212234668 U CN212234668 U CN 212234668U CN 202020494597 U CN202020494597 U CN 202020494597U CN 212234668 U CN212234668 U CN 212234668U
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China
Prior art keywords
electrode
incision knife
electric connector
electrically connected
main body
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Active
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CN202020494597.0U
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Chinese (zh)
Inventor
唐志
范茗侨
解欢
李常青
冷德嵘
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Nanwei Medical Technology Co ltd
Micro Tech Nanjing Co Ltd
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Nanwei Medical Technology Co ltd
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Priority to CN202020494597.0U priority Critical patent/CN212234668U/en
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Abstract

The utility model relates to the field of medical equipment, particularly, relate to a incision sword for endoscope. An endoscopic incision knife includes a knife body and an operation portion, wherein the knife body includes a first electrode and a second electrode. The operation part comprises a first electric connector and a second electric connector, and the first electric connector and the second electric connector are respectively electrically connected with the first electrode and the second electrode. The endoscopic incision knife includes a monopolar mode operation state in which a first electrode connected to an energy generator is energized via a first electrical connector, a monopolar mode operation state in which a second electrode connected to the energy generator is energized via a second electrical connector, and a bipolar mode operation state in which the first electrode and the second electrode connected to the energy generator are energized simultaneously via the first electrical connector and the second electrical connector. The endoscopic incision knife can be used in a monopolar mode or in a bipolar mode, thereby simplifying the operation and shortening the operation period.

Description

Incision knife for endoscope
Technical Field
The utility model relates to the field of medical equipment, particularly, relate to a incision sword for endoscope.
Background
Endoscope technology has been developed for over 50 years, and has gone through the stages from disease diagnosis to disease treatment, and the treatment of some digestive diseases is very effective and reliable and even becomes the first-choice therapy for 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 they 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 recent years, endoscopic submucosal dissection is popularized in the complete excision of large tumor lesions of the digestive tract, and the indications of the endoscopic submucosal dissection are expanded to the esophagus and the large intestine by taking the stomach as the center. As a safety treatment instrument associated with this, a bipolar type surgical instrument has been developed.
Currently, electrosurgical instruments include monopolar and bipolar approaches. Monopolar instruments have only one electrode by themselves, while bipolar has two electrodes at the end of the instrument. The monopolar mode has high frequency current passing through the body, and a negative plate must be additionally arranged on the surface of the body, so that the current passes through the tube wall when the negative plate is used for the digestive tract, and the danger of damaging deep tissues exists. In contrast, bipolar current flows between 2 electrodes on the instrument without the need for a negative plate, and theoretically, current only flows through a portion very close to the instrument, which is characterized by a small range of tissue damage. This reduces the high-frequency current flowing from the distal end of the instrument to the muscular layer. Compared with the prior monopolar surgical instrument, perforation due to deep thermal deformation is not easy to occur.
However, in the conventional bipolar type incision knife, a connection cable connected to a high-frequency generator is designed separately and can be used only as a bipolar type surgical instrument; in addition, the two electrodes are required to be simultaneously contacted with tissues in the operation process to normally work, and the two electrodes are difficult to be simultaneously contacted with the tissues at certain extreme positions, so that the operation instrument in a monopolar mode is required to be replaced, the operation becomes more complicated, the operation time is prolonged, and the pain is brought to a patient.
SUMMERY OF THE UTILITY MODEL
The object of the present invention is to provide a scalpel for an endoscope, which can be used in a monopolar mode and in a bipolar mode, thereby simplifying the operation and shortening the operation cycle.
The embodiment of the utility model discloses a can realize like this:
in a first aspect, an embodiment provides an endoscopic incision knife including a knife body and an operating portion, the knife body including a first electrode and a second electrode;
the operation part comprises a first electric connector and a second electric connector which are respectively and electrically connected with the first electrode and the second electrode;
the endoscopic incision knife includes a monopolar mode operation state in which a first electrode connected to an energy generator is energized via a first electrical connector, a monopolar mode operation state in which a second electrode connected to the energy generator is energized via a second electrical connector, and a bipolar mode operation state in which the first electrode and the second electrode connected to the energy generator are energized simultaneously via the first electrical connector and the second electrical connector.
In an alternative embodiment, the cutter body further comprises a conduit and an insulator;
a first electrode at the distal end of the catheter;
the insulator and the second electrode are both connected to the distal end of the catheter, the insulator configured to electrically isolate the first electrode from the second electrode.
In an alternative embodiment, the operation part comprises an operation part main body, a sliding block and a transmission tube, wherein the distal end of the operation part main body is connected with the proximal end of the guide tube; the operation part main body comprises a hole part matched with the transmission pipe;
the sliding block is connected with the operation part main body in a sliding way; the part of the transmission pipe is positioned in the hole part, and one end of the transmission pipe positioned in the hole part is in transmission connection with the sliding block; the rest part of the transmission tube is positioned in the guide tube, and one end of the transmission tube positioned in the guide tube is in transmission connection with the first electrode; the slider is configured to drive the transmission pipe to slide relative to the extending direction of the operation part main body under the action of external force so as to drive the first electrode to move relative to the guide pipe.
In an alternative embodiment, the drive tube is a hollow tube; the transmission pipe is in clearance fit with the hole part;
the transmission tube positioned in the guide tube is communicated with the first electrode, the first electrode and the transmission tube jointly limit a first channel, and the near end of the operation part main body is provided with a first connecting port communicated with the first channel.
In an alternative embodiment, the first electrode is a clearance fit with the insulator;
the outer wall of the transmission pipe, the inner wall of the guide pipe and the inner wall of the hole part jointly define a second channel, a gap between the first electrode and the insulating part is communicated with the second channel, and the far end of the operation part main body is provided with a second connecting port communicated with the second channel.
In an alternative embodiment, the first electrical contact is connected to the slider; the second electrical connector is connected to the distal end of the operating section body.
In an alternative embodiment, the incision knife for an endoscope further includes a combination mounting seat provided outside the operation portion, and the first electrical connector and the second electrical connector are both connected to the combination mounting seat.
In an alternative embodiment, the operation portion includes a first cable and a second cable;
the slide block is provided with a first through hole, and the operation part main body is provided with a second through hole;
one end of the first cable extends into the operation part main body from the first through hole and is electrically connected with the first electrode, and the other end of the first cable is positioned outside the operation part and is electrically connected with the first electric connector;
one end of the second cable extends into the operation part main body from the second through hole and is electrically connected with the second electrode, and the other end of the second cable is positioned outside the operation part and is electrically connected with the second electric connector.
In an alternative embodiment, the operation part further includes two first connection lines; one ends of the two first connecting wires are respectively used for being electrically connected with the first electric connector and the second electric connector; the other ends of the two first connecting wires are provided with bipolar mode plugs, and the two bipolar mode plugs are used for being electrically connected with a bipolar mode socket of the high-frequency generator.
In an alternative embodiment, the operating portion further comprises two second connecting lines; one end of one second connecting line is used for being electrically connected with the first electric connector or the second electric connector, the other end of the second connecting line is provided with a single-pole mode plug, and the single-pole mode plug is used for being electrically connected with the single-pole mode socket; one end of the other second connecting line is used for being electrically connected with the first electric connector, the second electric connector or the negative plate, and the other end of the second connecting line is provided with a neutral electrode plug which is used for being electrically connected with the neutral electrode socket.
The utility model discloses beneficial effect includes:
the incision knife for the endoscope is provided with an operation state in which the first electrode is conducted, an operation state in which the second electrode is conducted, and an operation state in which the first electrode and the second electrode are simultaneously conducted. Therefore, the incision knife for the endoscope has a single-stage working state that the first electrode or the second electrode is selected to be electrically conducted with the energy generator, and a double-stage working state that the first electrode and the second electrode are simultaneously electrically conducted with the energy generator, so that the incision knife for the endoscope has the single-stage working state and the double-stage working state, and further can avoid the replacement of instruments in the operation process, thereby simplifying the operation and shortening the operation period.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view showing a structure of a cutting blade for an endoscope in an embodiment of the present invention;
fig. 2 is a schematic structural view of a cutter body in an embodiment of the present invention;
FIG. 3 is a partial cross-sectional view of a cutting blade for an endoscope in an embodiment of the present invention;
FIG. 4 is a schematic view showing a structure of a cutting blade for an endoscope according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a first connection line in an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a second connecting line in an embodiment of the present invention.
Icon: 10-a cutter body; 11-a catheter; 12-a first electrode; 13-an insulator; 14-a second electrode; 20-incision knife for endoscope; 21-an operating part; 22-an operation part main body; 23-a slide block; 211-a transmission tube; 221-a first connection port; 222-a second connection port; 24-a first electrical terminal; 25-a second electrical terminal; 26-a first cable; 27-a second cable; 28-a combination mounting seat; 311-a first connection line; 312-a bipolar mode plug; 321-a second connecting line; 322-single pole mode plug; 323-neutral electrode plug.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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, as 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 accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to 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, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Referring to fig. 1, fig. 1 shows a structure of a cutting blade for an endoscope according to an embodiment of the present invention. The utility model discloses an endoscope is with cutting sword 20, this endoscope is with cutting sword 20 includes cutter body 10 and operation portion 21, and cutter body 10 includes first electrode 12 and second electrode 14.
The operation section 21 includes a first electrical connector 24 and a second electrical connector 25. Wherein the first electrical connector 24 is used for electrically connecting with the first electrode 12; and a second electrical connector 25 is used for electrical connection to the second electrode 14.
The endoscopic incision knife 20 includes a monopolar mode operation state in which the first electrode 12 connected to the energy generator is energized through the first electrical connector 24, a monopolar mode operation state in which the second electrode 14 connected to the energy generator is energized through the second electrical connector 25, and a bipolar mode operation state in which the first electrode 12 and the second electrode 14 connected to the energy generator are energized simultaneously through the first electrical connector 24 and the second electrical connector 25.
The operation principle of the endoscopic incision knife 20 is as follows:
the cutter body 10 of the endoscopic incision knife 20 includes the first electrode 12 and the second electrode 14, so that the endoscopic incision knife 20 has a single-pole operation state in which the first electrode 12 or the second electrode 14 is selectively conducted, and a bipolar operation state in which the first electrode 12 and the second electrode 14 are simultaneously conducted, and further, the endoscopic incision knife 20 can select the monopolar operation state or the bipolar operation state according to actual conditions.
Accordingly, when a patient is operated by the endoscopic incision knife 20, the endoscopic incision knife 20 can be switched between the monopolar operation state and the bipolar operation state to avoid the replacement of surgical instruments, thereby simplifying the operation and shortening the operation cycle to reduce the pain of the patient during the operation.
Further, please refer to fig. 2, fig. 2 shows a structure of the knife body in an embodiment of the present invention, in this embodiment, the knife body 10 further includes a guide tube 11 and an insulating member 13.
The catheter 11 has a distal end and a proximal end, the first electrode 12 being located at the distal end of the catheter 11; an insulator 13 and a second electrode 14 are both connected to the distal end of the catheter 11, the insulator 13 being configured to electrically isolate the first electrode 12 from the second electrode 14.
It should be noted that, in the embodiment of the present invention, the first electrode 12 may be fixedly connected to the conduit 11, or may be movably connected to the conduit 11. In this embodiment, the first electrode 12 is movably connected to the distal end of the catheter 11 along the length of the catheter 11. In addition, the distal end of the catheter 11 is the end of the catheter 11 away from the holding position of the doctor, and the proximal end of the catheter 11 is the end of the catheter 11 close to the holding position of the doctor. In addition, the distal end of each structure referred to hereinafter refers to the end of the corresponding structure away from the holding position of the doctor, and similarly, the proximal end of each structure referred to hereinafter refers to the end of the corresponding structure close to the holding position of the doctor.
The insulator 13 and the second electrode 14 are both connected to the distal end of the catheter 11, and the insulator 13 is configured to electrically isolate the first electrode 12 and the second electrode 14. Since the insulator 13 electrically isolates the first electrode 12 and the second electrode 14, when the insulator 13, the first electrode 12, and the second electrode 14 are provided, the insulator 13 needs to be disposed between the first electrode 12 and the second electrode 14, and the first electrode 12 and the second electrode 14 need to be prevented from contacting each other, thereby preventing conduction between the first electrode 12 and the second electrode 14.
Further, in the present embodiment, when the first electrode 12 is configured, the first electrode 12 may be configured as a hollow tube, and the first electrode 12 located at the distal end of the catheter 11 communicates with the catheter 11. So as to facilitate the injection of liquid to the surgical site through the first electrode 12 when the catheter 11 is in communication with the liquid line, to irrigate the adherent tissue or the bleeding site, or to aspirate the surgical site through the first electrode 12 when the catheter 11 is in communication with the vacuum line.
In addition, as with the irrigation and aspiration principle described above, when the insulating member 13 is provided, the first electrode 12 and the second electrode 14 are electrically isolated by the insulating member 13, and the first electrode 12 and the insulating member 13 are also in clearance fit, and the clearance between the first electrode 12 and the insulating member 13 is communicated with the catheter 11, so that a liquid can be injected to the surgical site through the clearance between the first electrode 12 and the insulating member 13 to irrigate the adhered tissue or bleeding site, or aspirate the surgical site.
Further, referring to fig. 3 in conjunction with fig. 1 and 2, fig. 3 shows a structure of a transmission pipe in an embodiment of the present invention. For ease of operation, the operating portion 21 is connected to the proximal end of the cutter body 10, and the operating portion 21 is configured to manipulate the first electrode 12 to move relative to the catheter 11. The operation unit 21 includes an operation unit main body 22, a slider 23, and a transmission tube 211, and the distal end of the operation unit main body 22 is connected to the proximal end of the catheter 11.
The slider 23 is slidably connected to the operation portion main body 22; in order to allow the driving tube 211 to drivingly connect the slider 23 and the first electrode 12, the operating portion main body 22 includes a hole portion to be fitted with the driving tube 211, a part of the driving tube 211 is located in the hole portion, and the remaining part of the driving tube 211 is located in the guide tube 11. And one end of the transmission tube 211 positioned in the guide tube 11 is in transmission connection with the first electrode 12, and one end of the transmission tube 211 positioned in the hole part is in transmission connection with the sliding block 23.
The slider 23 is configured to drive the transmission tube 211 to slide relative to the extending direction of the operation portion main body 22 under the action of external force, so as to drive the first electrode 12 to move relative to the guide tube 11.
Further, in the present embodiment, when the driving pipe 211 is configured, the driving pipe 211 may be configured as a hollow pipe or a solid pipe.
In the present embodiment, when the driving pipe 211 is configured as a hollow pipe, the driving pipe 211 is clearance-fitted to the hole portion.
Therefore, when the transmission tube 211 is assembled in the guide tube 11 and is respectively communicated with the first electrode 12 and the slider 23, because the transmission tube 211 is in clearance fit with the hole part, the outer wall of the transmission tube 211 positioned in the guide tube 11 and the operation part main body 22 is spaced from the hole part and the inner wall of the guide tube 11, so that the first electrode 12 and the transmission tube 211 can jointly define a first channel when the transmission tube 211 is communicated with the first electrode 12; meanwhile, the outer wall of the transmission pipe 211, the inner wall of the guide pipe 11 and the inner wall of the hole part together define a second passage; and the first channel is isolated from the second channel.
Meanwhile, in order to supply liquid or suction to the first and second passages, a first connection port 221 communicating with the first passage is provided at the proximal end of the operation portion main body 22, and a second connection port 222 communicating with the second passage is provided at the distal end of the operation portion main body 22.
When the first electrode 12 and the driving tube 211 form a first channel, the outlet of the first channel at the first electrode 12 is the opening of the first electrode 12 far from the driving tube 211. The gap between the first electrode 12 and the insulating member 13 is communicated with the conduit 11, so that the gap between the first electrode 12 and the insulating member 13 is communicated with the second channel, and the outlet of the second channel at the far end of the conduit 11 is the gap between the first electrode 12 and the insulating member 13.
Accordingly, in the operation using the scalpel 20 for an endoscope, it is possible to supply a liquid or suction through the first channel or the second channel, and further, it is possible to discharge a washing liquid through the opening of the first electrode 12 or the gap between the first electrode 12 and the insulating member 13, or to use the washing liquid as a suction port in the suction process.
Further, in other embodiments of the present invention, when the transmission tube 211 is a solid tube, the inner wall of the guide tube 11 and the outer wall of the transmission tube 211 form a channel, and the gap between the first electrode 12 and the insulating member 13 is simultaneously communicated with the channel, so that the gap between the first electrode 12 and the insulating member 13 is configured to output liquid or perform suction simultaneously.
When the first electrical connector 24 and the second electrical connector 25 are disposed, there are various embodiments, specifically, in this embodiment, the operation portion 21 further includes a first cable 26, a second cable 27, and a combination mounting seat 28 disposed outside the operation portion 21; wherein the slider 23 is provided with a first through hole (not shown in the form of drawings), and the operation portion main body 22 is provided with a second through hole (not shown in the form of drawings); one end of the first cable 26 extends into the operation portion main body 22 through the first through hole and is electrically connected to the first electrode 12, and the other end of the first cable 26 is located outside the operation portion 21; one end of the second cable 27 extends into the operation portion main body 22 through the second through hole and is electrically connected to the second electrode 14, and the other end of the second cable 27 is located outside the operation portion 21. The first electrical connector 24 and the second electrical connector 25 are disposed on the combination mounting seat 28, and the first electrical connector 24 is electrically connected to an end of the first cable 26 located outside the operation portion 21, and the second electrical connector 25 is electrically connected to an end of the second cable 27 located outside the operation portion 21.
Thus, the first and second electrical connectors 24 and 25 are disposed outside the operation portion 21 through the first and second cables 26 and 27 and the combination mounting seat 28, so that the first and second electrical connectors 24 and 25 are electrically connected to an external electrical component. At the same time, such an arrangement facilitates adjustment of the electrical connection state between the first electrical connector 24 and the second electrical connector 25 and the external electrical component, that is, adjustment of the operation state of the endoscopic incision knife 20. In particular, when two persons simultaneously operate the operation portion 21, one of the two persons can adjust the operation state of the endoscopic incision knife 20 outside the operation portion 21 while the other person holds the operation position of the operation portion 21, so that the operation procedure of the endoscopic incision knife 20 can be simplified, the operation efficiency of the endoscopic incision knife 20 can be improved, the operation time can be shortened, and the pain of the patient can be alleviated.
Referring to fig. 4, fig. 4 shows the structure of the first electrical connector and the second electrical connector in other embodiments of the present invention. In other embodiments of the present invention, when the first electrical connector 24 and the second electrical connector 25 are disposed, the first electrical connector 24 can be connected to the slider 23 and electrically connected to the first electrode 12; the second electrical connector 25 is connected to the distal end of the operating portion main body 22 and electrically connected to the second electrode 14. That is, the first electrical connector 24 and the second electrical connector 25 may be disposed on the operation unit 21. This arrangement can simplify the structure of the endoscopic incision knife 20, reduce the number of assembly steps, and reduce the manufacturing cost. Next, the first electrical connector 24 and the second electrical connector 25 are disposed on the slider 23 and the operation unit main body 22, respectively, so that the user who grips the operation unit 21 can easily adjust the operation state of the endoscopic incision knife 20.
Further, in the present embodiment, the energy generator may be electrically connected to either one or both of the first electrode 12 and the second electrode 14, so that the endoscopic incision knife 20 has a first operation state in which the energy generator is electrically connected to the first electrode 12, a second operation state in which the energy generator is electrically connected to the second electrode 14, and a third operation state in which the energy generator is simultaneously electrically connected to the first electrode 12 and the second electrode 14.
Referring to fig. 5 and 6, fig. 5 and 6 show the structures of the first connecting line and the second connecting line in the embodiment of the present invention. In addition, it should be noted that, in the present embodiment, the energy generator is a high-frequency generator, and the high-frequency generator includes a bipolar mode socket (not shown in the form of the drawings), a unipolar mode socket (not shown in the form of the drawings), and a neutral electrode socket (not shown in the form of the drawings). The operation unit 21 further includes two first connection lines 311 and two second connection lines 321.
In order to switch the endoscopic incision knife 20 among the first, second, and third operating states, the present embodiment employs a configuration in which the state of insertion of the two first connection lines 311 and the two second connection lines 321 into the high-frequency generator is changed, and the switching is further performed among the three operating states.
Therefore, when two first connection lines 311 are provided, the two first connection lines 311 may be the same, and one ends of the two first connection lines 311 are used to electrically connect with the first electrical connector 24 and the second electrical connector 25, respectively; the other ends of the two first connection lines 311 are each provided with a bipolar mode plug 312, and the two bipolar mode plugs 312 are each used for electrical connection with a bipolar mode socket of the high-frequency generator.
When two second connection lines 321 are provided, one end of one of the second connection lines 321 is used for electrically connecting with the first electrical connector 24 or the second electrical connector 25, the other end of the second connection line 321 is provided with a single-pole mode plug 322, and the single-pole mode plug 322 is used for electrically connecting with a single-pole mode socket; one end of the other second connection line 321 is for electrical connection with the first electrical connector 24, the second electrical connector 25, or the negative plate, and the other end of the second connection line 321 is provided with a neutral electrode plug 323, and the neutral electrode plug 323 is for electrical connection with a neutral electrode socket.
Referring to fig. 1 to 6, in the present embodiment, when the endoscopic incision knife 20 is in the first operation state, the endoscopic incision knife 20 is used as a monopolar surgical instrument, and one second connection wire 321 electrically connects the first electrode 12 to the monopolar mode socket, and the negative electrode plate is connected to the neutral electrode socket of the high-frequency generator via the other second connection wire 321, thereby forming a current loop. At this time, only the first electrode 12 is conducted, when the first electrode 12 is in contact with the mucosal tissue at the operation site, the first electrode can be used for marking, cutting and coagulation, and a liquid source or a vacuum source can be connected through the first interface and the second interface to perform injection liquid or negative pressure suction.
When the endoscopic incision knife 20 is in the second operation state, the endoscopic incision knife 20 is used as a monopolar surgical instrument, and the working principle thereof is the same as that in the first operation state, and therefore, the description thereof is omitted.
When the endoscopic incision knife 20 is in the third operation state, the endoscopic incision knife 20 is used as a bipolar surgical instrument. In order to put the endoscopic incision knife 20 into the third operation state, the endoscopic incision knife 20 and the high-frequency generator may be electrically connected by using two first connection lines 311 or two second connection lines 321.
When electrically connecting the endoscopic incision knife 20 and the high-frequency generator using the two first connection lines 311, the two first connection lines 311 electrically connect the first electrical connector 24 and the second electrical connector 25 to the bipolar mode socket of the high-frequency generator; the first electrode 12 now serves as the working electrode and the second electrode 14 serves as the return electrode for forming the current return. When the first electrode 12 is in the retracted state, it may be used for labeling or coagulation; pushing the slider 23 to extend the first electrode 12, wherein the first electrode 12 can be used for cutting tissue; meanwhile, a liquid source or a vacuum source can be connected through the first interface and the second interface to perform injection liquid or negative pressure suction. When connected to a source of fluid, can be used for submucosal injection of raised mucosal tissue, irrigation of bleeding sites, cleaning of adherent tissue, and the like; when a vacuum source is connected, fluids infused in the body, etc. can be aspirated.
When electrically connecting the endoscopic incision knife 20 and the high-frequency generator using the two second connection wires 321, the second connection wire 321 provided with the single-pole mode plug 322 of the two second connection wires 321 electrically connects one of the first electrical connector 24 and the second electrical connector 25 to the single-pole mode socket of the high-frequency generator, and the second connection wire 321 provided with the neutral electrode plug 323 of the two second connection wires 321 electrically connects the other of the first electrical connector 24 and the second electrical connector 25 to the neutral electrode socket of the high-frequency generator; the first electrode 12 now serves as the working electrode and the second electrode 14 serves as the return electrode for forming the current return. When the first electrode 12 is in the retracted state, it may be used for labeling or coagulation; pushing the slider 23 to extend the first electrode 12, wherein the first electrode 12 can be used for cutting tissue; meanwhile, a liquid source or a vacuum source can be connected through the first interface and the second interface to perform injection liquid or negative pressure suction. When connected to a source of fluid, can be used for submucosal injection of raised mucosal tissue, irrigation of bleeding sites, cleaning of adherent tissue, and the like; when a vacuum source is connected, fluids infused in the body, etc. can be aspirated.
As can be seen from the above, the endoscopic incision knife 20 can be switched between the monopolar mode and the bipolar mode by switching the state of insertion of the two first connecting wires 311 and the two second connecting wires 321 into the endoscopic incision knife 20 and the radio-frequency generator, and during this process, the endoscopic incision knife 20 does not need to be replaced, so that the endoscopic incision knife 20 can be used in both the monopolar mode and the bipolar mode, and the replacement of instruments during the operation can be avoided, thereby simplifying the operation, shortening the operation cycle, and ensuring the reliability and safety of the hand.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. An endoscopic incision knife, comprising:
the incision knife for the endoscope comprises a knife body and an operation part, wherein the knife body comprises a first electrode and a second electrode;
the operating part comprises a first electric connector and a second electric connector, and the first electric connector and the second electric connector are respectively electrically connected with the first electrode and the second electrode;
the endoscopic incision knife includes a monopolar mode operation state in which a first electrode connected to an energy generator is energized via the first electrical connector, a monopolar mode operation state in which a second electrode connected to the energy generator is energized via the second electrical connector, and a bipolar mode operation state in which the first electrode and the second electrode connected to the energy generator are energized simultaneously via the first electrical connector and the second electrical connector.
2. The endoscopic incision knife according to claim 1, wherein:
the cutter body also comprises a conduit and an insulating part;
the first electrode is located at the distal end of the catheter;
the insulator and the second electrode are both connected to a distal end of the catheter, the insulator configured to electrically isolate the first electrode and the second electrode.
3. The endoscopic incision knife according to claim 2, wherein:
the operating part comprises an operating part main body, a sliding block and a transmission tube, and the far end of the operating part main body is connected with the near end of the guide tube; the operation part main body comprises a hole part matched with the transmission pipe;
the slider is slidably connected to the operation portion main body; the part of the transmission pipe is positioned in the hole part, and one end of the transmission pipe positioned in the hole part is in transmission connection with the sliding block; the rest part of the transmission tube is positioned in the guide tube, and one end of the transmission tube positioned in the guide tube is in transmission connection with the first electrode; the slider is configured to drive the transmission tube to slide relative to the extending direction of the operation portion main body under the action of external force so as to drive the first electrode to move relative to the guide tube.
4. The endoscopic incision knife according to claim 3, wherein:
the transmission pipe is a hollow pipe; the transmission pipe is in clearance fit with the hole part;
the transmission tube positioned in the guide tube is communicated with the first electrode, the first electrode and the transmission tube jointly define a first channel, and the proximal end of the operation part main body is provided with a first connecting port communicated with the first channel.
5. The endoscopic incision knife according to claim 4, wherein:
the first electrode is in clearance fit with the insulating part;
the outer wall of the transmission pipe, the inner wall of the guide pipe and the inner wall of the hole part jointly define a second channel, a gap between the first electrode and the insulating part is communicated with the second channel, and the far end of the operation part main body is provided with a second connecting port communicated with the second channel.
6. The endoscopic incision knife according to claim 3, wherein:
the first electric joint is connected with the sliding block; the second electrical connector is connected to a distal end of the operating portion body.
7. The endoscopic incision knife according to claim 3, wherein:
the incision knife for the endoscope further comprises a combined mounting seat arranged outside the operation part, and the first electric connector and the second electric connector are connected with the combined mounting seat.
8. The endoscopic incision knife according to claim 7, wherein:
the operation part comprises a first cable and a second cable;
the slider is provided with a first through hole, and the operation part main body is provided with a second through hole;
one end of the first cable extends into the operation part main body from the first through hole and is electrically connected with the first electrode, and the other end of the first cable is positioned outside the operation part and is electrically connected with the first electric connector;
one end of the second cable extends into the operation part main body from the second through hole and is electrically connected with the second electrode, and the other end of the second cable is positioned outside the operation part and is electrically connected with the second electric connector.
9. The endoscopic incision knife according to claim 1, wherein:
the operating part further comprises two first connecting lines; one ends of the two first connecting wires are respectively used for being electrically connected with the first electric connector and the second electric connector; and the other ends of the two first connecting wires are provided with bipolar mode plugs, and the two bipolar mode plugs are used for being electrically connected with a bipolar mode socket of the high-frequency generator.
10. The endoscopic incision knife according to claim 1, wherein:
the operating part also comprises two second connecting lines; one end of one of the second connection lines is used for being electrically connected with the first electric connector or the second electric connector, and the other end of the second connection line is provided with a single-pole mode plug which is used for being electrically connected with a single-pole mode socket; one end of the other second connecting line is used for being electrically connected with the first electric connector, the second electric connector or the negative plate, and the other end of the second connecting line is provided with a neutral electrode plug which is used for being electrically connected with a neutral electrode socket.
CN202020494597.0U 2020-04-07 2020-04-07 Incision knife for endoscope Active CN212234668U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020494597.0U CN212234668U (en) 2020-04-07 2020-04-07 Incision knife for endoscope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020494597.0U CN212234668U (en) 2020-04-07 2020-04-07 Incision knife for endoscope

Publications (1)

Publication Number Publication Date
CN212234668U true CN212234668U (en) 2020-12-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
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CN (1) CN212234668U (en)

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