CN116531082A

CN116531082A - Endoscope and front end cover thereof

Info

Publication number: CN116531082A
Application number: CN202310333291.5A
Authority: CN
Inventors: 李鹏
Original assignee: Hangzhou Anjisi Medical Science And Technology Co ltd
Current assignee: Hangzhou Anjisi Medical Science And Technology Co ltd
Priority date: 2022-03-31
Filing date: 2023-03-31
Publication date: 2023-08-04

Abstract

Embodiments of the present specification provide an endoscope and a front end cap thereof. The endoscope comprises an insertion part, wherein the insertion part is used for conveying an electrode instrument, and is provided with a contact electrode and a conductive path; at least part of the contact electrode is arranged outside the insertion part; the contact electrode is electrically connected to a power supply through the conductive path. The endoscope comprises a conductive path and a contact electrode, wherein the conductive path and the contact electrode are used as a current return channel, and form a current loop together with an electrode instrument, so that the current path is short and the area is controllable, the risk of thermal injury can be reduced, the damage to a metal implant is avoided, the metal implant can be reused, and the cost is reduced.

Description

Endoscope and front end cover thereof

Priority statement

The present application claims priority from chinese patent application 202210333147.7 filed on day 2022, month 03 and 31.

Technical Field

The present disclosure relates to the field of medical technology, and in particular, to an endoscope and a front end cover thereof.

Background

In the current treatment schemes of digestive tract cancer and the like, a main flow endoscope adopts a monopolar instrument, a neutral electrode plate or a negative electrode plate is required to be attached to the body surface, and then current passes through the electrode of the monopolar instrument, through living tissues and viscera, and returns to the neutral electrode plate or the negative electrode plate attached to the surface of the living body, so that a current loop is formed. The method has long current path, high risk of generating thermal injury through deep flow to living body, easy damage to metal implant caused by electromagnetic interference, and high cost because the neutral electrode plate is disposable, so that an endoscope treatment scheme which is simple, has little damage to living body and can reduce cost is needed.

Disclosure of Invention

One of the embodiments of the present specification provides an endoscope comprising an insertion portion for delivering an electrode instrument, the insertion portion being provided with a contact electrode and a conductive path; at least part of the contact electrode is arranged outside the insertion part; the contact electrode is electrically connected to a power supply through the conductive path.

In some embodiments, the insertion portion includes an instrument channel for the passage of the electrode instrument, and the conductive path includes a first conductive path disposed within the instrument channel.

In some embodiments, the instrument channel is made of a conductive material to form the first conductive path; or, the inner wall of the instrument channel is provided with a conductive structure, and the conductive structure extends along the length direction of the instrument channel so as to form the first conductive path.

In some embodiments, the endoscope includes a front end cap disposed at a distal end of the instrument channel, the contact electrode including a first contact electrode disposed at an outer surface of the front end cap; the first contact electrode is electrically connected to the power supply through the first conductive path.

In some embodiments, all of the front end cap is a transparent structure, or at least a portion of the front end cap distal end is a transparent structure.

In some embodiments, the contact electrode includes a second contact electrode disposed on an outer surface of the middle section of the insertion portion, the second contact electrode being electrically connected to the first conductive path through a wire.

In some embodiments, the contact electrode comprises a second contact electrode, and the conductive path comprises a second conductive path; the second contact electrode is arranged on the outer surface of the middle section of the insertion part, and the second contact electrode is electrically connected with the power supply through the second conductive path.

In some embodiments, the second conductive path includes an outer wire routed outside of the insert; alternatively, the second conductive path includes an inner wire disposed inside the insertion portion, and the inner wire is electrically connected to the second contact electrode through a sidewall of the insertion portion.

In some embodiments, the middle section of the insertion portion is a partial or full section between 5 cm and 50 cm from the distal end of the insertion portion.

One of the embodiments of the present specification provides an endoscope including an insertion portion for delivering an electrode instrument; the electrode device has two conductive paths, one of which is electrically connected to one of the poles of the power supply and the other of which is electrically connected to the other pole of the power supply.

In some embodiments, the electrode instrument includes a first electrode instrument electrically connected to one of the poles of the power supply and a second electrode instrument electrically connected to the other pole of the power supply.

In some embodiments, the insertion portion includes a first instrument channel for passing the first electrode instrument and a second instrument channel for passing the second electrode instrument.

In some embodiments, the insertion portion includes a first instrument channel for the passage of the first electrode instrument, and the second electrode instrument is provided on an outer surface of the insertion portion.

In some embodiments, the endoscope further comprises a sheath for passing the second electrode instrument and a securing member for securing the sheath to an outer surface of the insertion portion.

In some embodiments, the outer surface of the distal end of the insertion portion is provided with a third contact electrode, the conductive path comprises a third conductive path, the third conductive path is provided on the inner or outer surface of the electrode device, and the third contact electrode is electrically connected with the third conductive path.

In some embodiments, the insertion portion is configured as a tube including an instrument channel for the passage of the electrode instrument, a fourth conductive path is disposed within the instrument channel, one end of the fourth conductive path is electrically connected to the third contact electrode, the other end is connected to the third conductive path, and a connection point of the other end of the fourth conductive path to the third conductive path is located at least one of a distal end, a proximal end, and a middle section of the insertion portion.

In some embodiments, the outer surface of the middle section of the insertion part is provided with a fourth contact electrode, the conductive path comprises a fifth conductive path, the fifth conductive path is arranged in or on the outer surface of the electrode device, and the fourth contact electrode is electrically connected with the fifth conductive path.

One of the embodiments of the present specification provides a front end cap of an endoscope, an outer surface of which is provided with a contact electrode.

In some embodiments, the front end cover is provided with a conductive contact part, one end of the conductive contact part is fixed on the inner wall of the front end cover, and the other end of the conductive contact part extends towards the central axis of the front end cover.

In some embodiments, the front end cover is provided with an auxiliary conductor, the auxiliary conductor is arranged on the inner wall of the front end cover, and the auxiliary conductor is electrically connected with the contact electrode on the outer surface of the front end cover.

In some embodiments, the front end cap further comprises an external filling device comprising a filling implement and a delivery tube, the filling implement being connected between the outer surface of the front end cap and the contact electrode through the delivery tube, the filling implement being capable of delivering fluid between the outer surface of the front end cap and the contact electrode through the delivery tube to expand the contact electrode.

In some embodiments, the contact electrode is made of a flexible conductive material and/or an elastic conductive material, and the contact electrode has a width in a natural state that is greater than a width of the front end cover.

According to the scheme in the embodiment, the electrode instrument of the endoscope can be used as an output path of current, and the contact electrode and the conductive path of the endoscope are used as return paths of the current, so that a current loop is locally generated in operation, the current path is short, the area is controllable, and damage to metal implants (such as metal joints and metal false teeth) at other parts of a living body can be avoided. In the path of the current from the distal end of the electrode instrument through the living tissue to the contact electrode, the current flows substantially at the inner surface of the living tissue based on the skin effect, thereby reducing the risk of thermal damage. In addition, the contact electrode and the conductive path can be reused, thereby reducing costs. Furthermore, the contact electrode and the conductive path are provided on the endoscope, so that the endoscope can be applied to most monopole instruments on the market, and the scope of application is wide.

Drawings

The present specification will be further elucidated by way of example embodiments, which will be described in detail by means of the accompanying drawings. The embodiments are not limiting, in which like numerals represent like structures, wherein:

fig. 1 is a schematic view of an application scenario of an endoscope according to a first embodiment of the present disclosure;

FIG. 2 is a first schematic view of a distal section of an endoscope according to a first embodiment of the present disclosure;

FIG. 3 is a cross-sectional view of the endoscope shown in the embodiment of FIG. 2, taken along line A-A;

FIG. 4 is a second structural schematic view of a distal section of an endoscope according to a first embodiment of the present disclosure;

FIG. 5 is a cross-sectional view of the endoscope shown in the embodiment of FIG. 4, taken along line B-B;

fig. 6 is a schematic view of an application scenario of an endoscope according to a second embodiment of the present disclosure;

FIG. 7 is a first schematic view of a middle section of an endoscope according to a second embodiment of the present disclosure;

FIG. 8 is a cross-sectional view of the endoscope shown in the embodiment of FIG. 7, taken along line C-C;

FIG. 9 is a second structural schematic view of a mid-section of an endoscope according to a second embodiment of the present disclosure;

FIG. 10 is a cross-sectional view of the endoscope shown in the embodiment of FIG. 9, taken along line D-D;

fig. 11 is a schematic view of an application scenario of an endoscope according to a third embodiment of the present disclosure;

FIG. 12 is a first structural schematic view of a distal section and a middle section of an endoscope according to a third embodiment of the present disclosure;

FIG. 13 is a cross-sectional view of the endoscope shown in the embodiment of FIG. 12, taken along line E-E;

FIG. 14 is a second structural schematic view of a distal section and a middle section of an endoscope according to a third embodiment of the present disclosure;

FIG. 15 is a cross-sectional view of the endoscope shown in the embodiment of FIG. 14, taken along line F-F;

fig. 16 is a schematic view of an application scenario of an endoscope according to a fourth embodiment of the present disclosure;

FIG. 17 is a first schematic view of a distal section of an endoscope according to a fourth embodiment of the present disclosure;

FIG. 18 is a cross-sectional view of the endoscope shown in the embodiment of FIG. 17 taken along line G-G;

FIG. 19 is a second structural schematic view of a distal section of an endoscope according to a third embodiment of the present disclosure;

FIG. 20 is a cross-sectional view of the endoscope shown in the embodiment of FIG. 19 taken along line H-H;

Fig. 21 is a schematic view of an application scenario of an endoscope according to a fifth embodiment of the present disclosure;

FIG. 22 is a schematic view showing a structure of a middle section of an endoscope according to a fifth embodiment of the present specification;

FIG. 23 is a cross-sectional view of the endoscope shown in the embodiment of FIG. 22, taken along line I-I;

fig. 24 is a schematic view showing the structure of a front end cover of an endoscope according to a sixth embodiment of the present specification;

FIG. 25 is a side view of a front end cap of an endoscope according to a sixth embodiment of the present disclosure;

fig. 26 is an end view schematically showing a front end cover of an endoscope according to a sixth embodiment of the present specification;

FIG. 27 is a schematic view showing a distal end cap of an endoscope with a taper cap removed according to a sixth embodiment of the present specification;

fig. 28 is a schematic structural view of an external filling device in an unfilled state according to a sixth embodiment of the present disclosure;

FIG. 29 is a cross-sectional view taken along line J-J of the external filling device shown in accordance with the sixth embodiment of FIG. 28 in an unfilled state;

FIG. 30 is a cross-sectional view taken along line J-J of the external filling device shown in accordance with the sixth embodiment of FIG. 28 in a filled state;

fig. 31 is a schematic view showing the structure of a contact electrode in a natural expansion state according to a sixth embodiment of the present specification;

Fig. 32 is a sectional view of the contact electrode according to the sixth embodiment of fig. 31 taken along the line K-K in a naturally expanded state.

The reference numerals are:

1. an endoscope; 11. an insertion section; 111. an instrument channel; 100. a first conductive path; 110. a first contact electrode; 12. an operation unit; 13. inserting a jaw; 14. a front end cover; 141. a contact electrode; 142. a conical cap; 143. a conductive contact; 144. an auxiliary conductor; 145. an external filling device; 146. filling the appliance; 147. a delivery tube; 200. a second conductive path; 210. a second contact electrode; 300. a sheath; 310. a fixing member; 320. a first instrument channel; 330. a cover body; 340. a limiting ring; 400. a third contact electrode; 410. a third conductive path; 420. a fourth conductive path; 500. a fourth contact electrode; 510. a fifth conductive path; 2. an electrode instrument; 21. a first electrode instrument; 22. a second electrode instrument; 3. and a power supply.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present specification, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is apparent that the drawings in the following description are only some examples or embodiments of the present specification, and it is possible for those of ordinary skill in the art to apply the present specification to other similar situations according to the drawings without inventive effort. Unless otherwise apparent from the context of the language or otherwise specified, like reference numerals in the figures refer to like structures or operations.

As used in this specification and the claims, the terms "a," "an," "the," and/or "the" are not specific to a singular, but may include a plurality, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and they do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus.

The endoscope is a tool for assisting doctors in observing lesions in organs such as digestive tracts, sinuses, auditory meatuses and the like, can convey electrode instruments into the organs, and controls the electrode instruments to perform functions of incision, cauterization, hemostasis and the like, so that the current is required to be supplied to the electrode instruments to enable the electrode instruments to move. The embodiment of the specification provides an endoscope, which comprises a conductive path and a contact electrode, wherein the conductive path and the contact electrode are used as a current return channel, a current loop is formed together with an electrode instrument, the current path is short, the area is controllable, the risk of thermal injury can be reduced, the damage to a metal implant is avoided, the endoscope can be reused, and the cost is reduced.

In some embodiments, the endoscope 1 may be used in conjunction with the electrode device 2 and the power source 3 when in use. The endoscope 1 may include an insertion portion 11, an operation portion 12, and an insertion jaw 13. The insertion part 11 may be a hard tube or a soft tube, which is used for extending into the body, and the distal end of the insertion part 11 is provided with a lens for collecting images and transmits the collected images to an external image display device; the operation part 12 is provided at the proximal end of the insertion part 11, and may include a plurality of operation knobs which may be used to control the angle of the distal end of the insertion part 11, supply air, water, or operate an electrode instrument, etc.; the insertion jaw 13 is provided at the proximal end of the insertion portion 11, and the electrode instrument 2 can be extended from the insertion jaw 13 into the interior of the insertion portion 11 and moved to the distal end of the insertion portion 11 to protrude. Wherein, the proximal ends in the embodiments of the present description may be the ends close to the operator, and the distal ends may be the ends far away from the operator.

In some embodiments, the insertion portion 11 may be used to transport the electrode device 2, the insertion portion 11 being provided with contact electrodes and conductive paths. The contact electrode in the embodiment of the present specification may be an electrical conductor for contacting with living tissue, for example, the contact electrode may be a structure of a conductive metal sheet, a conductive coating, or a conductive film. The conductive path in the embodiments of the present description may be a transmission structure capable of transferring an electric current from one location to another, for example, the conductive path may be a wire or a conductive coating or the like. The power supply 3 in the embodiment of the present specification may be a power supply device that stabilizes an output voltage or an output current, and may be, for example, a high-frequency electric knife, a storage battery, a power grid terminal socket, or the like.

In some embodiments, at least part of the contact electrode is disposed outside the insertion portion 11. In some embodiments, a portion of the contact electrode is disposed outside the insertion portion 11 and another portion of the contact electrode is disposed inside the insertion portion 11 so as to direct the current of the living tissue onto the conductive path. In some embodiments, all of the contact electrodes are disposed outside of the insert 11, and the conductive path is located outside or inside of the insert 11 and extends to the contact electrodes. In some embodiments, the contact electrode 2 is electrically connected to a power source by a conductive path.

According to the scheme in the embodiment, the electrode device 2 of the endoscope 1 can be used as an output path of current, and the contact electrode and the conductive path of the endoscope 1 are used as return paths of the current, so that a current loop is locally generated in operation, the current path is short, the area is controllable, and damage to metal implants (such as metal joints, metal false teeth and the like) at other parts of a living body can be avoided. In the path of the current from the distal end of the electrode instrument 2 through the living tissue to the contact electrode, the current flows substantially at the inner surface of the living tissue based on the skin effect, thereby reducing the risk of thermal damage. In addition, the contact electrode and the conductive path can be reused, thereby reducing costs. Further, by providing the contact electrode and the conductive path to the endoscope 1, the present invention can be applied to most monopolar instruments on the market, and the scope of application is wide.

Example 1

Fig. 1 is a schematic view of an application scenario of an endoscope according to a first embodiment of the present disclosure.

A first embodiment of the present disclosure provides an endoscope 1, as shown in fig. 1, where an insertion portion 11 of the endoscope 1 includes an instrument channel 111, and the instrument channel 111 is used for passing an electrode instrument 2. In some embodiments, the instrument channel 111 may pass directly through the electrode instrument 2, or the instrument channel 111 may pass through a sheath 300 provided on the outer circumferential side of the electrode instrument 2. In some embodiments, the electrode device 2 may be a medical device provided with electrodes that can be used for examination and/or therapy. In some embodiments, the electrode device 2 may include, but is not limited to, a mucosal incision, an electric snare, an electric coagulation forceps, an electric biopsy forceps, a digestive tract stent, a balloon dilation catheter, a cytobrush, an endoscopic injection needle, a soft tissue clip, and the like. In some embodiments, the electrode device 2 may be understood to include a sheath on its peripheral side.

In some embodiments, the conductive path of the endoscope 1 may include a first conductive path 100, the first conductive path 100 being disposed within the instrument channel. In some embodiments, when the endoscope 1 is in use, one end of the electrode instrument 2 may be connected to a power source 3, the other end passing through the instrument channel 111 to perform an operation in vivo, the power source 3 being capable of providing electrical energy to the electrode instrument 2, the current of the power source 3 being passed from the proximal end to the distal end of the electrode instrument 2, the current of the distal end of the electrode instrument 2 being passed through living tissue to a contact electrode, the contact electrode passing the current back to the power source 3 via the first conductive path 100 to form a current loop. The current loop has short path, controllable area and small damage. The first conductive path 100 is provided in the instrument channel 111 of the endoscope 1, and can be applied to most of monopolar instruments on the market, and the scope of application is wide.

Fig. 2 is a schematic view of a first configuration of a distal section of an endoscope according to a first embodiment of the present disclosure. FIG. 3 is a cross-sectional view of the endoscope shown in accordance with the embodiment of FIG. 2, taken along line A-A. Fig. 4 is a schematic view of a second configuration of a distal section of an endoscope according to a first embodiment of the present disclosure. FIG. 5 is a cross-sectional view of the endoscope shown in accordance with the embodiment of FIG. 4, taken along line B-B.

As shown in fig. 2, in some embodiments, the instrument channel 111 of the endoscope 1 is made of a conductive material to form the first conductive path 100, and has a simple structure and good conductive effect. In some embodiments, the conductive material may include, but is not limited to, a conductive metal (e.g., copper, aluminum containing metal or alloy, etc.) or a composite conductive non-metal (e.g., carbon fiber, graphite fiber, etc. composite material) material.

As shown in fig. 2 and 3, in some embodiments, the inner wall of the instrument channel 111 of the endoscope 1 is provided with a conductive structure extending along the length of the instrument channel 111 (e.g., the conductive structure extends from the distal end of the instrument channel 111 to the proximal end of the instrument channel 111), i.e., one end of the conductive structure is connected to the first contact electrode 110 and the other end is for connection to the power source 3 to form the first conductive path 100. In some embodiments, the conductive structure may be a conductive coating applied to the inner wall of the instrument channel 111. The conductive coating may include, but is not limited to, a coating containing a conductive medium such as nickel-coated graphite powder, nickel-coated carbon fiber carbon black, metal foil, metal fiber, carbon fiber, and the like. In some embodiments, the conductive structure may be a wire, such as a flexible wire or the like. In some embodiments, the conductive structure may be a conductive wire that extends in a serpentine or spiral shape along the inner wall of the instrument channel 111.

As shown in fig. 2 and 4, in some embodiments, the endoscope 1 includes a front end cap 14, the front end cap 14 being disposed at a distal end of the instrument channel 111. In an application embodiment of the endoscope 1, the front end cap 14 may be used to press on living tissue, keeping the distance between the distal end of the endoscope 1 and the surface of the living tissue constant, facilitating the acquisition of images by the lens of the distal end of the endoscope 1, and maintaining the stability of the lens.

In some embodiments, the contact electrodes of the endoscope 1 include a first contact electrode 110, the first contact electrode 110 may be provided on an outer surface of the front end cap 14, the first contact electrode 110 is electrically connected to the power source 3 through the first conductive path 100, the first contact electrode 110 may be in contact with the living tissue, and the current is returned to the power source 3 through the first conductive path 100. In some embodiments, the first contact electrode 110 may cover all or a portion of the outer surface of the front end cap 14. The first contact electrode 110 may be a conductive coating on the outer surface of the front end cover 14, or may be a conductive sleeve or a conductive patch sleeved on the outer surface of the front end cover 14, and the distal end of the first contact electrode 110 may extend to the distal edge of the front end cover 14 and continue to extend to the inner wall of the front end cover 14 until being connected to the first conductive path 100.

In some embodiments, all of the front end cap 14 is a transparent structure. In some embodiments, at least a portion of the distal end of the front end cap 14 is a transparent structure. The transparent structure does not obstruct the view of the lens of the endoscope 1, facilitating the lens to acquire images of the surgical site. In some embodiments, the transparent structure of the front end cover 14 may be made of PET (Polyethylene terephthalate) plastic, tempered glass, or conductive resin. In some embodiments, the outer surface of the transparent structure of the front end cap 14 may be coated with a transparent conductive structure, such as a zinc oxide-based transparent conductive film (ZnO-TCL), low-dimensional nanomaterials (including nanotubes, nanowires, graphene), conductive polymers, and the like.

As shown in fig. 2, in some embodiments, the insertion portion 11 of the endoscope 1 is configured as a tube including an instrument channel 111, the electrode instrument 2 entering the instrument channel 111 from a proximal end of the insertion portion 11, and exiting a distal end of the insertion portion 11 via the instrument channel 111. In some embodiments, the endoscope 1 is a side view mirror, which may be a structure in which an outlet of the instrument channel 111 (i.e., an end through which the electrode instrument 2 is passed) is provided on a distal side wall of the insertion portion 11, and the electrode instrument 2 is passed out from the distal side wall of the insertion portion 11, so as to be operated laterally of the insertion portion 11.

As shown in fig. 4, in some embodiments, the endoscope 1 is a straight view mirror, which may be a structure in which an outlet of the instrument channel 111 is provided on a distal end face of the insertion portion 11, and the electrode instrument 2 is passed out from the distal end face of the insertion portion 11 so as to be operated directly in front of the insertion portion 11.

As shown in fig. 5, in some embodiments, a conductive structure, which may be a conductive coating or strip, is provided between the insertion portion 11 of the endoscope 1 and the instrument channel 111 to form a first conductive path 100.

Example two

Fig. 6 is a schematic view of an application scenario of an endoscope according to a second embodiment of the present disclosure.

The endoscope 1 according to the second embodiment of the present specification is based on the endoscope 1 according to the first embodiment, and the conductive path is modified. In some application scenarios of the endoscope 1, there may be no contact between the distal end of the endoscope 1 and the living tissue, and then the first contact electrode 110 disposed at the distal end of the endoscope 1 is not in contact with the living tissue, resulting in failure to form a current loop, which affects the operation.

Based on this, as shown in fig. 6, the insertion portion 11 in the second embodiment of the present specification is provided with the second conductive path 200 and the second contact electrode 210, the second contact electrode 210 is provided on the outer surface of the middle section of the insertion portion 11, and the second contact electrode 210 is electrically connected to the power supply through the second conductive path 200. In the application of the endoscope 1, the middle section of the endoscope 1 is usually located in the duct of the esophagus, the intestinal canal, etc., and inevitably contacts with the duct of the esophagus, the intestinal canal, etc., so by providing the second contact electrode 210 in the middle section of the insertion portion 11, the probability of the second contact electrode 210 contacting with the living tissue can be increased to form a stable current loop, thereby maintaining the stability of the operation.

In an application embodiment of the endoscope 1, the current loop may comprise: a power source 3, an electrode device 2, living tissue, a second contact electrode 210, a second conductive path 200, a power source 3. For example, current flows from the power supply 3, through the electrode device 2, the living tissue, the second contact electrode 210 and the second conductive path 200 back to the power supply 3.

In some embodiments, the middle section of the insertion portion 11 is a section that is between 5 cm and 50 cm from the end face of the distal end of the insertion portion 11. In some embodiments, the length of the second contact electrode 210 may range from 1 cm to 45 cm (e.g., 1 cm, 5 cm, 10 cm, 30 cm, 45 cm, etc.). The second contact electrode 210 may be disposed at any position on the middle section, for example, the distal end of the second contact electrode 210 may be 5 cm, 10 cm, 20 cm, 30 cm, 40 cm, or the like from the distal end of the insertion portion 11.

Fig. 7 is a first structural schematic diagram of a middle section of an endoscope according to a second embodiment of the present specification. FIG. 8 is a cross-sectional view of the endoscope shown in accordance with the embodiment of FIG. 7, taken along line C-C.

As shown in fig. 7 and 8, in some embodiments, the second conductive path 200 includes an outer wire routed outside the insertion portion 11; the second contact electrode 210 is electrically connected to a power source through an external lead at the outside of the insertion portion. The wires are easily laid out outside the insertion portion 11, so that the difficulty in laying out can be reduced. In some embodiments, the wire may be fixedly attached to the outer surface of the insertion portion 11 by bonding, spot welding, or the like to avoid wobble of the wire outside the insertion portion 11.

Fig. 9 is a second structural schematic view of a middle section of an endoscope according to a second embodiment of the present specification. FIG. 10 is a cross-sectional view of the endoscope shown in accordance with the embodiment of FIG. 9, taken along line D-D.

As shown in fig. 9 and 10, in some embodiments, the second conductive path 200 may include an inner wire routed inside the insertion portion 11, the inner wire being connected to the second contact electrode 210 through a sidewall of the insertion portion 11. The inner leads are arranged on the inner side of the insertion part 11, so that the structure is more compact, and the radial dimension of the insertion part 11 is not affected. In some embodiments, the second conductive path 200 may be routed within the electrode instrument 2 of the insertion portion 11, or may be routed in other delivery channels (e.g., air feed channels, water feed channels, etc.) of the insertion portion 11. In some embodiments, the second conductive path 200 may be disposed on an inner wall of the insertion portion 11 or integrated in a side wall of the insertion portion 11.

In some embodiments, the sidewall of the insertion part 11 is formed with a connection through-hole connecting the outer surface and the inner surface of the insertion part 11, through which one end of the inner lead may be electrically connected with the second contact electrode 210; alternatively, the connection via is filled with a conductive medium that is capable of establishing an electrical connection between the wire and the second contact electrode 210.

The second conductive path 200 and the first contact electrode 110 in the second embodiment of the present disclosure may also be provided in combination with the first conductive path 100 and the first contact electrode 110 in the first embodiment. In some embodiments, the endoscope 1 includes a first conductive path 100, a first contact electrode 110, a second contact electrode 210. The first contact electrode 110 is disposed on the outer surface of the distal end of the insertion portion 11, the second contact electrode 210 is disposed on the outer surface of the middle section of the insertion portion 11, and the first conductive path 100 extends from the distal end to the proximal end of the insertion portion 11. The first contact electrode 110 is connected to the first conductive path 100 at the distal end of the insertion portion 11, and the second contact electrode 210 is connected to the first conductive path 100 at the middle section of the insertion portion 11. In some embodiments, the second contact electrode 210 may be connected to the first conductive path 100 by a wire. In some embodiments, the middle section of the insertion portion 11 is formed with a connection via capable of connecting the outer surface of the insertion portion 11 with the inner surface of the instrument channel 111, and a conductive medium may be disposed within the connection via capable of transferring the current of the second contact electrode 210 to the first conductive path 100 within the instrument channel 111.

According to the above scheme, the endoscope 1 is provided with the first contact electrode 110 and the second contact electrode 210 at the same time, and is connected with the power supply 3 through the first conductive path 100, and when the first contact electrode 110 is separated from the living tissue, the second contact electrode 210 can establish a current loop, so that phenomena such as power failure, burn and the like are avoided, and the stability is higher.

The conductive paths of the first and second embodiments are provided inside or outside the insertion portion 11. Some embodiments in which the conductive path is provided on the electrode instrument 2 will be described hereinafter.

In some embodiments, the insertion portion 11 of the endoscope 1 is used to deliver the electrode device 2, the electrode device 2 having two conductive paths, one of which is electrically connected to one of the poles of the power source 3 and the other of which is electrically connected to the other pole of the power source 3. By providing two conductive paths on the electrode instrument 2, the integration degree is high, and the influence on the insertion portion 11 of the endoscope 1 is small.

Example III

Fig. 11 is a schematic view of an application scenario of an endoscope according to a third embodiment of the present disclosure.

As shown in fig. 11, the endoscope 1 provided in the third embodiment of the present specification includes an insertion portion 11, and the insertion portion 11 can be used to convey a first electrode instrument 21 and a second electrode instrument 22, the first electrode instrument 21 being electrically connected to one pole of the power source 3, and the second electrode instrument 22 being electrically connected to the other pole of the power source 3. In some embodiments, the first electrode instrument 21 may be electrically connected to a positive (or negative) electrode of the power supply 3, and the second electrode instrument 22 may be electrically connected to a negative (or positive) electrode of the power supply 3. The first electrode instrument 21 and the second electrode instrument 22 may each be one conductive path.

By arranging two electrode devices on the endoscope 1, the operation function of the endoscope 1 can be increased, the two devices can form a current loop in the operation part after being contacted with the living tissue, the current path is short, the area is controllable, the thermal damage is small, and the damage to metal implants (such as metal joints, metal false teeth and the like) at other parts of the living body can be avoided. And the first electrode instrument 21 and the second electrode instrument 22 can be reused, thereby reducing costs.

Fig. 12 is a schematic view showing a first structure of a distal end section and a middle section of an endoscope according to a third embodiment of the present specification. FIG. 13 is a cross-sectional view of the endoscope shown in accordance with the embodiment of FIG. 12, taken along line E-E. Fig. 14 is a second structural schematic view of a distal section and a middle section of an endoscope according to a third embodiment of the present disclosure. FIG. 15 is a cross-sectional view of the endoscope shown in the embodiment of FIG. 14, taken along line F-F.

In some embodiments, the insertion portion 11 may include a first instrument channel 320 for the passage of the first electrode instrument 21 and a second instrument channel (not shown) for the passage of the second electrode instrument 22. By arranging the two instrument channels, the mutual influence of the two electrode instruments can be avoided, and the independent conveying of the electrode instruments is convenient.

As shown in fig. 12-15, in some embodiments, the insertion portion 11 includes a first instrument channel 320, the first instrument channel 320 for the passage of the first electrode instrument 21, and the second electrode instrument 22 is provided on an outer surface of the insertion portion 11. The arrangement mode is free from changing the internal structure of the insertion part 11, the second electrode device 22 is directly added on the outer surface of the insertion part 11, and the arrangement mode is suitable for most endoscopes on the market, has wide application range and can reduce the manufacturing cost.

In some embodiments, the endoscope 1 further comprises a sheath 300, the sheath 300 being for the passage of the second electrode instrument 2. In some embodiments, the middle or proximal end of the sheath 300 may be provided with a contact electrode through which current from the living tissue is directed into the second electrode instrument 22 such that the second electrode instrument 22 may be selectively contacted with the living tissue without affecting the use of the first electrode instrument 21.

In some embodiments, endoscope 1 further comprises a securing member 310, securing member 310 being used to secure sheath 300 to the outer surface of insertion portion 11. In some embodiments, the anchor 310 may be a resilient ring, and a plurality of resilient rings may be spaced on the distal to proximal axis of the insert to compress the second electrode instrument 22 or sheath 300 to the outer surface of the insert 11. The use of an elastic ring as the fixing member 310 facilitates the installation and removal of the second electrode instrument 22.

As shown in fig. 14, in some embodiments, the distal end of the insertion portion 11 is provided with a front end cap 14, and the front end cap 14 includes a cap body 330 and a stop collar 340 provided on an outer surface of the cap body 330, and the stop collar 340 may be used to secure the second electrode instrument 22 provided on the outer surface of the insertion portion 11. In some embodiments, the front end cap 14 may be made of a conductive material, or the front end cap 14 may have a conductive coating on the surface thereof that covers the outer surfaces of the front end cap 14 and stop collar 340 to facilitate electrical connection with living tissue. The front end cap 14 may increase the contact area with the living tissue, facilitating the establishment of an electrically conductive path between the second electrode instrument 22 and the living tissue.

Example IV

Fig. 16 is a schematic view of an application scenario of an endoscope according to a fourth embodiment of the present disclosure. Fig. 17 is a first structural schematic view of a section near the distal end of an endoscope according to a fourth embodiment of the present specification. FIG. 18 is a cross-sectional view of the endoscope shown in accordance with the embodiment of FIG. 17, taken along line G-G. Fig. 19 is a second structural schematic view of a section near the distal end of the endoscope according to the third embodiment of the present specification. FIG. 20 is a cross-sectional view of the endoscope shown in accordance with the embodiment of FIG. 19, taken along line H-H.

In the fourth embodiment of the present specification, the conductive path is modified based on the endoscope 1 in the first embodiment. As shown in fig. 16 to 20, the endoscope 1 provided in the fourth embodiment of the present specification includes an insertion portion 11 and a third contact electrode 400, the insertion portion 11 being used for conveying the electrode instrument 2. The conductive paths include a third conductive path 410, the third conductive path 410 being provided in the interior or exterior surface of the electrode instrument 2 and being electrically connected to one of the poles of the power source 3, and a third contact electrode 400 being provided in the exterior surface of the distal end of the insertion portion 11 and being electrically connected to the third conductive path 410. The current of the power supply 3 may pass through the electrode of the electrode instrument 2, the living tissue, the third contact electrode 400 and the third conductive path 410, and finally return to the power supply 3. By providing the third conductive path 410 on the electrode instrument 2, the overall structure is compact and the integration is high.

In some embodiments, the third conductive path 410 is disposed inside the electrode instrument 2, and the third conductive path 410 may be a wire running from the distal end of the electrode instrument 2 along the axis to the proximal end. In some embodiments, the third conductive path 410 is disposed on the outer surface of the electrode device 2, and the third conductive path 410 may be a conductive coating applied to the outer surface of the electrode device 2 from the distal end to the proximal end of the electrode device 2.

In some embodiments, the electrode instrument 2 of the endoscope 1 may be connected to the positive electrode (or negative electrode) of the power source 3, the third conductive path 410 may be connected to the negative electrode (or positive electrode) of the power source 3, and a current loop may be formed through the electrode instrument 2, the living tissue, the third contact electrode 400, and the third conductive path 410.

In some embodiments, a fourth conductive path 420 is disposed within the instrument channel 111 of the endoscope 1, one end of the fourth conductive path 420 is electrically connected to the third contact electrode 400, the other end is connected to the third conductive path 410, and a connection site of the other end of the fourth conductive path 420 to the third conductive path 410 may be located at least one of a distal end, a proximal end, and a middle section of the insertion portion 11. In some embodiments, the fourth conductive path 420 may be a conductive coating or wire disposed on the inner wall of the instrument channel 111, and the current of the living tissue flows from the third contact electrode 400 to the fourth conductive path 420 and then into the third conductive path 410 of the electrode instrument 2 at a location of at least one of the distal, proximal, or midsection of the insertion portion 11.

In some embodiments, the connection location of the fourth conductive path 420 and the third conductive path 410 may be located at the distal end of the insertion portion 11, which may be a section of the insertion portion 11 away from the operator, for example, a section that is 1 cm to 5 cm from the end face of the distal end of the insertion portion 11. The connection portion between the fourth conductive path 420 and the third conductive path 410 is disposed at the distal end, so that the space occupied by the fourth conductive path 420 in the instrument channel 111 can be reduced.

In some embodiments, the connection point of the fourth conductive path 420 and the third conductive path 410 may be located at a middle section of the insertion portion 11, which may be a section spaced 5 cm to 50 cm from the end surface of the distal end of the insertion portion 11. The connection portion between the fourth conductive path 420 and the third conductive path 410 is disposed in the middle section, so that the contact area between the fourth conductive path 420 and the third conductive path 410 can be increased, and the conductive stability can be maintained.

In some embodiments, the connection of the fourth conductive path 420 to the third conductive path 410 may be located at the proximal end of the insertion portion 11, which may be a section of the insertion portion 11 near the operator, for example, a section that is 10 cm to 50 cm from the operation portion 12 at the proximal end of the insertion portion 11. The connection of the fourth conductive path 420 to the third conductive path 410 is provided at the proximal end to facilitate inspection of electrical contact and maintenance.

In some embodiments, the connection portion between the fourth conductive path 420 and the third conductive path 410 may be located at any two or three of the proximal end, the middle section or the distal end of the insertion portion 11, so that the reliability of the connection between the fourth conductive path 420 and the third conductive path 410 may be improved.

As shown in fig. 17, in some embodiments, endoscope 1 may be a side view mirror with electrode instrument 2 protruding from an opening in a sidewall of the distal end of insertion portion 11. As shown in fig. 19, the endoscope 1 may be a direct view mirror, and the electrode instrument 2 protrudes from an opening of the distal end face of the insertion portion 11.

Example five

Fig. 21 is a schematic view of an application scenario of an endoscope according to a fifth embodiment of the present specification. Fig. 22 is a schematic view showing a structure of a middle section of an endoscope according to a fifth embodiment of the present specification. FIG. 23 is a cross-sectional view of the endoscope shown in accordance with the embodiment of FIG. 22, taken along line I-I.

In the fifth embodiment, the conductive path is modified based on the endoscope 1 in the fourth embodiment. As shown in fig. 21 to 22, the endoscope 1 provided in the fifth embodiment of the present specification includes an insertion portion 11 and a fourth contact electrode 500, the insertion portion 11 is used for conveying the electrode device 2, the conductive path includes a fifth conductive path 510, the fifth conductive path 510 is provided in the interior or the exterior of the electrode device 2 and is electrically connected to one pole of the power source 3, and the fourth contact electrode 500 is provided on the exterior of the middle section of the insertion portion 11 and is electrically connected to the fifth conductive path 510.

Since the middle section of the endoscope 1 is usually located in the duct of the esophagus, the intestine, etc., and inevitably contacts the duct of the esophagus, the intestine, etc., by providing the fourth contact electrode 500 in the middle section of the insertion portion 11, the probability of the fourth contact electrode 500 contacting the living tissue can be increased to form a stable current loop, thereby maintaining the stability of the operation.

In some embodiments, the side wall of the insertion portion 11 is formed with a connection via connecting the outer surface of the insertion portion 11 with the inner surface of the instrument channel 111, through which the fifth conductive path 510 may be electrically connected with the fourth contact electrode 500, or in which a conductive medium is provided, through which the fifth conductive path 510 may establish an electrical connection with the fourth contact electrode 500.

Example six

The sixth embodiment of the present specification provides a distal end cap 14 of an endoscope, and the distal end cap 14 can be applied to the endoscope of any one of the first to fifth embodiments.

Fig. 24 is a schematic view showing the structure of a distal end cover of an endoscope according to a sixth embodiment of the present specification. Fig. 25 is a side view of a distal end cover of an endoscope according to a sixth embodiment of the present specification.

As shown in fig. 24 and 25, the sixth embodiment of the present specification provides a distal end cap 14 of an endoscope 1, the outer surface of the distal end cap 14 being provided with a contact electrode 141, the contact electrode 141 being for contact with a living tissue as a partial path for current transmission. In some embodiments, the contact electrode 141 may cover all or part of the outer surface of the front end cap 14. The contact electrode 141 may be a conductive coating or a conductive film on the outer surface of the front end cover 14, or may be a conductive sleeve or a conductive patch sleeved on the outer surface of the front end cover 14. In some embodiments, the front end cap 14 may be made of an electrically conductive material. In some embodiments, part or all of the front end cap 14 is made of an electrically conductive transparent material. The contact electrode 141 may extend to the distal edge of the front end cap 14 and continue to the inner wall of the front end cap 14, facilitating connection with the conductive path of the endoscope 1.

In some embodiments, the entirety of the front end cap 14 is a transparent structure, or at least a portion of the distal end of the front end cap 14 is a transparent structure. The transparent structure does not obstruct the view of the lens of the endoscope 1, facilitating the lens to acquire images of the surgical site. In some embodiments, the transparent structure of the front end cover 14 may be made of PET (Polyethylene terephthalate) plastic, tempered glass, or conductive resin. In some embodiments, the outer surface of the transparent structure of the front end cap 14 may be coated with a transparent conductive structure, such as a zinc oxide-based transparent conductive film (ZnO-TCL), low-dimensional nanomaterials (including nanotubes, nanowires, graphene), conductive polymers, and the like.

In some embodiments, the front end cap 14 includes a tapered cap 142, the tapered cap 142 being disposed at the distal end of the front end cap 14, and the tapered cap 142 decreasing in diameter toward the distal end of the front end cap 14. By providing the tapered cap 142, the distal end of the front end cap 14 is more conveniently brought into the submucosa and the separated mucosa is spread apart, facilitating the acquisition of images by the endoscope 1.

Fig. 26 is an end view schematically showing a distal end cover of an endoscope according to a sixth embodiment of the present specification. Fig. 27 is a schematic view showing a front end cap of an endoscope with a taper cap hidden according to a sixth embodiment of the present specification.

As shown in fig. 26 and 27, in some embodiments, the front end cover 14 is provided with a conductive contact portion 143, one end of the conductive contact portion 143 is fixed to an inner wall of the front end cover 14, and the other end is arranged to extend toward a central axis of the front end cover 14.

In some embodiments, when the front end cap 14 is disposed at the distal end of the insertion portion 11 of the endoscope 1, the electrode instrument 2 is penetrated out of the instrument channel 111 of the insertion portion 11, and the conductive contact portion 143 may form sliding contact or abutment with the outer surface of the electrode instrument 2, thereby transmitting the current contacting the electrode 141 to the outer surface of the electrode instrument 2, maintaining the stability of the current.

In some embodiments, when the front end cap 14 is disposed at the distal end of the insertion portion 11 of the endoscope 1, the electrode instrument 2 is passed out of the instrument channel 111 of the insertion portion 11, and the conductive contact portion 143 may form a snap-fit with the electrode instrument 2, positioning the electrode instrument 2 in the surgical site. In some embodiments, the outer surface of the electrode apparatus 2 may be formed with a groove, and one end of the conductive contact portion 143 extends into the groove of the electrode apparatus 2 to be engaged, so as to improve the stability of the operation of the electrode apparatus 2.

In some embodiments, the conductive contact 143 may be a conductive dome with elastic or deformable capability that prevents the conductive contact 143 from scratching the outer surface of the electrode device 2.

As shown in fig. 27, in some embodiments, the front end cover 14 is provided with an auxiliary conductor 144, the auxiliary conductor 144 being provided on an inner wall of the front end cover 14, the auxiliary conductor 144 being electrically connected to the contact electrode 141 of an outer surface of the front end cover 14. In some embodiments, when the front end cap 14 is disposed at the distal end of the insertion portion 11 of the endoscope 1, the electrode instrument 2 is threaded out of the instrument channel 111 of the insertion portion 11, and the auxiliary conductor 144 may be brought into sliding contact or abutment with the outer surface of the electrode instrument 2, thereby transmitting the current contacting the electrode 141 to the outer surface of the electrode instrument 2. Providing the auxiliary conductor 144 in addition to the conductive contact portion 143 can improve the success rate of the electrical connection of the contact electrode 141 with the electrode instrument 2.

In some embodiments, the inner edge of the auxiliary conductor 144 is arcuate, which conforms to the curvature of the outer surface of the electrode instrument 2.

Fig. 28 is a schematic structural view of an external filling device in an unfilled state according to a sixth embodiment of the present disclosure. Fig. 29 is a cross-sectional view of the external filling device according to the sixth embodiment of fig. 28 taken along line J-J in an unfilled state. Fig. 30 is a cross-sectional view of the external filling device according to the sixth embodiment of fig. 28 taken along line J-J in a filled state.

As shown in fig. 28-30, in some embodiments, the front end cover 14 further includes an external filling device 145, the external filling device 145 including a filling apparatus 146 and a delivery tube 147, the filling apparatus 146 being connected between the outer surface of the front end cover 14 and the contact electrode 141 through the delivery tube 147, the filling apparatus 146 being capable of delivering a fluid (gas or water, etc.) between the outer surface of the front end cover 14 and the contact electrode 141 through the delivery tube 147 to expand the contact electrode 141. By providing the external filling device 145 to expand the contact electrode 141, the contact area of conduction is increased, so that the contact probability between the contact electrode 141 and the living tissue is increased, and the conduction performance is improved.

In some embodiments, the contact electrode 141 may be conductive plastic or conductive rubber having elasticity. In some embodiments, the contact electrode 141 is configured in a sleeve shape, the contact electrode is sleeved on the outer surface of the front end cover 14, and edges of both axial ends of the contact electrode 141 are in sealing connection with the outer surface of the front end cover 14, such as bonding, etc., and a middle portion of the contact electrode 141 is detachably contacted with the front end cover 14, and when the filling implement fills water or inflates between the contact electrode 141 and the front end cover 14, the middle portion of the contact electrode 141 can be expanded, thereby increasing the surface area of the contact electrode 141.

Fig. 31 is a schematic view showing the structure of a contact electrode in a natural expansion state according to the sixth embodiment of the present specification. Fig. 32 is a sectional view of the contact electrode according to the sixth embodiment of fig. 31 taken along the line K-K in a naturally expanded state.

As shown in fig. 31 and 32, in some embodiments, the contact electrode 141 is made of a flexible conductive material and/or an elastic conductive material. The contact electrode 141 may be, for example, a conductive plastic, a conductive rubber, or a wire mesh made of a memory alloy, or the like.

In some embodiments, the contact electrode 141 has a width in a natural state that is greater than the width of the front cover 14. In the process that the front end cover 14 enters the living body from the duct of the esophagus, the intestinal canal and the like, the contact electrode 141 can be bunched and attached to the outer surface of the front end cover 14, and the contact electrode 141 can be bunched by a wire for example. In some embodiments, one end of the pull wire is wrapped around the outer surface of the contact electrode 141, such that the contact electrode 141 is bunched around the outer surface of the front end cap 14, and the other end of the pull wire extends to the operating portion 12 of the endoscope 1. After the front end cover 14 reaches the operation position, the stay wire is pulled out from the operation part 12 to release the constraint of the contact electrode 141, the contact electrode 141 can be automatically expanded and unfolded to be in a natural state under the action of elastic restoring force, and the width is larger than that of the front end cover 14, so that the conductive contact area is increased, the contact probability of the contact electrode 141 and living tissues is increased, and the conductive performance is improved.

Possible beneficial effects of embodiments of the present application include, but are not limited to:

(1) The electrode instrument of the endoscope is used as an output path of current, the first contact electrode and the first conductive path are used as return paths of the current, so that a current loop is generated in a local operation, the current path is short, the area is controllable, and the damage to metal implants (such as metal joints, metal false teeth and the like) at other parts of a living body can be avoided. In the path of the current from the distal end of the electrode instrument through the living tissue to the first contact electrode, the current flows substantially at the inner surface of the living tissue based on the skin effect, thereby reducing the risk of thermal damage. In addition, the first contact electrode and the first conductive path can be reused, thereby reducing costs. The first contact electrode and the first conductive path are arranged on the endoscope, so that the endoscope is suitable for most monopolar instruments on the market, and the application range is wide.

(2) The front end cover is of a transparent structure or at least of a part of the front end cover is of a transparent structure, so that the view of a lens of an endoscope is prevented from being blocked, and the lens is convenient to acquire images of an operation part.

(3) In the second embodiment, by providing the second contact electrode in the middle section of the insertion portion, the probability of the second contact electrode coming into contact with the living tissue can be increased to form a stable current loop, thereby maintaining the stability of the surgical operation.

(4) In the third embodiment, by arranging two electrode devices on the endoscope, not only the operation function of the endoscope can be increased, but also the two devices can form a current loop in the operation part after being contacted with the living tissue, the current path is shorter, the area is controllable, the thermal damage is small, and the damage to metal implants (such as metal joints, metal false teeth and the like) at other parts of the living body can be avoided. And the first electrode instrument and the second electrode instrument can be reused, thereby reducing the cost.

(5) The first electrode instrument is arranged on the first instrument channel of the insertion part, the second electrode instrument is arranged on the outer surface of the insertion part, and the electrode instrument is suitable for most monopole instruments on the market, has a wide application range and reduces the manufacturing cost.

(6) In the fourth embodiment, the third conductive path is provided on the electrode device, so that the overall structure is compact, and the integration level is high.

(7) In the fifth embodiment, since the middle section of the endoscope is usually located in the duct of the esophagus, the intestine, etc., and inevitably contacts the duct of the esophagus, the intestine, etc., by providing the fourth contact electrode in the middle section of the insertion portion, the probability of the fourth contact electrode contacting the living tissue can be increased to form a stable current loop, thereby maintaining the stability of the operation.

(8) The front end cover is provided with the conical cap, so that the distal end of the front end cover can enter the submucosa conveniently and prop open the separation mucous membrane, and the endoscope can collect images conveniently.

(9) The front end cover is in sliding contact with the electrode instrument by arranging the conductive contact part so as to maintain current stability and improve the operation stability of the electrode instrument.

(10) The auxiliary conductor is arranged on the basis of the conductive contact part, so that the success rate of the electric connection between the contact electrode and the electrode instrument can be improved.

(11) The contact electrode is expanded by arranging the external filling device, so that the conductive contact area is increased, the contact probability of the contact electrode and living tissues is increased, and the conductive performance is improved.

It should be noted that, the advantages that may be generated by different embodiments may be different, and in different embodiments, the advantages that may be generated may be any one or a combination of several of the above, or any other possible advantages that may be obtained.

While the basic concepts have been described above, it will be apparent to those skilled in the art that the foregoing detailed disclosure is by way of example only and is not intended to be limiting. Although not explicitly described herein, various modifications, improvements, and adaptations to the present disclosure may occur to one skilled in the art. Such modifications, improvements, and modifications are intended to be suggested within this specification, and therefore, such modifications, improvements, and modifications are intended to be included within the spirit and scope of the exemplary embodiments of the present invention.

Meanwhile, the specification uses specific words to describe the embodiments of the specification. Reference to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic is associated with at least one embodiment of the present description. Thus, it should be emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various positions in this specification are not necessarily referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the present description may be combined as suitable.

Finally, it should be understood that the embodiments described in this specification are merely illustrative of the principles of the embodiments of this specification. Other variations are possible within the scope of this description. Thus, by way of example, and not limitation, alternative configurations of embodiments of the present specification may be considered as consistent with the teachings of the present specification. Accordingly, the embodiments of the present specification are not limited to only the embodiments explicitly described and depicted in the present specification.

Claims

1. An endoscope comprising an insertion portion for delivering an electrode instrument, the insertion portion being provided with a contact electrode and a conductive path;

At least part of the contact electrode is arranged outside the insertion part;

the contact electrode is electrically connected to a power supply through the conductive path.

2. The endoscope of claim 1, wherein the insertion portion includes an instrument channel for the passage of the electrode instrument, the conductive path including a first conductive path disposed within the instrument channel.

3. The endoscope of claim 2, wherein the instrument channel is made of a conductive material to form the first conductive path; or, the inner wall of the instrument channel is provided with a conductive structure, and the conductive structure extends along the length direction of the instrument channel so as to form the first conductive path.

4. The endoscope of claim 2, wherein the endoscope comprises a front end cap disposed at a distal end of the instrument channel, the contact electrode comprising a first contact electrode disposed at an outer surface of the front end cap; the first contact electrode is electrically connected to the power supply through the first conductive path.

5. The endoscope of claim 4, wherein all of the front end cap is of transparent construction or at least a portion of the distal end of the front end cap is of transparent construction.

6. The endoscope of any one of claims 2-4, wherein the contact electrode comprises a second contact electrode disposed on an outer surface of the middle section of the insertion section, the second contact electrode being electrically connected to the first conductive path by a wire.

7. The endoscope of claim 1, wherein the contact electrode comprises a second contact electrode and the conductive path comprises a second conductive path;

the second contact electrode is arranged on the outer surface of the middle section of the insertion part, and the second contact electrode is electrically connected with the power supply through the second conductive path.

8. The endoscope of claim 7, wherein the second conductive path comprises an outer wire routed outside of the insertion portion; or alternatively, the process may be performed,

the second conductive path includes an inner wire disposed inside the insertion portion, and the inner wire is electrically connected to the second contact electrode through a sidewall of the insertion portion.

9. The endoscope of claim 7, wherein the middle section of the insertion portion is a partial or full section between 5 cm and 50 cm from the distal end of the insertion portion.

10. An endoscope comprising an insertion portion for delivering an electrode instrument;

the electrode device has two conductive paths, one of which is electrically connected to one of the poles of the power supply and the other of which is electrically connected to the other pole of the power supply.

11. The endoscope of claim 10, wherein the electrode instrument comprises a first electrode instrument electrically connected to one of the poles of the power supply and a second electrode instrument electrically connected to the other pole of the power supply.

12. The endoscope of claim 11, wherein the insertion portion includes a first instrument channel for passage of the first electrode instrument and a second instrument channel for passage of the second electrode instrument.

13. The endoscope of claim 11, wherein the insertion portion includes a first instrument channel for passage of the first electrode instrument therethrough and the second electrode instrument is disposed on an outer surface of the insertion portion.

14. The endoscope of claim 13, further comprising a sheath for passing the second electrode instrument and a securing member for securing the sheath to an outer surface of the insertion portion.

15. The endoscope of claim 10, wherein the outer surface of the distal end of the insertion portion is provided with a third contact electrode, the conductive path comprising a third conductive path, the third conductive path being provided on an inner or outer surface of the electrode instrument, the third contact electrode being electrically connected to the third conductive path.

16. The endoscope of claim 15, wherein the insertion portion is configured as a tube including an instrument channel for the passage of the electrode instrument, a fourth conductive path being disposed within the instrument channel, one end of the fourth conductive path being electrically connected to the third contact electrode, the other end being connected to the third conductive path, a junction of the other end of the fourth conductive path and the third conductive path being located at least one of a distal end, a proximal end, and a midsection of the insertion portion.

17. The endoscope of claim 10, wherein the outer surface of the middle section of the insertion section is provided with a fourth contact electrode, the conductive path comprises a fifth conductive path, the fifth conductive path is provided on the inner or outer surface of the electrode instrument, and the fourth contact electrode is electrically connected with the fifth conductive path.

18. A front end cover of an endoscope, characterized in that the outer surface of the front end cover is provided with a contact electrode.

19. The endoscope front end cap of claim 18 wherein all of the front end cap is transparent or at least a portion of the front end cap distal end is transparent.

20. The endoscope front end cap of claim 18 wherein the front end cap is provided with a conductive contact portion having one end fixed to an inner wall of the front end cap and the other end extending toward a central axis of the front end cap.

21. The endoscope front end cover of claim 18 wherein the front end cover is provided with an auxiliary conductor provided on an inner wall of the front end cover, the auxiliary conductor being electrically connected to the contact electrode of an outer surface of the front end cover.

22. The endoscope front end cap of claim 18 further comprising an external filling device comprising a filling implement and a delivery tube, the filling implement being connected between an outer surface of the front end cap and a contact electrode through the delivery tube, the filling implement being capable of delivering fluid through the delivery tube between the outer surface of the front end cap and the contact electrode to expand the contact electrode.

23. The endoscope front end cap of claim 18 wherein the contact electrode is made of a flexible conductive material and/or an elastic conductive material, the contact electrode having a width in a natural state that is greater than the width of the front end cap.