Electronic endoscope

Abstract

The utility model provides an electronic endoscope which comprises a disposable endoscope sheath and a reusable endoscope body, the endoscope body comprises a camera shooting assembly, an endoscope body handle part and an endoscope plug, the camera shooting assembly is electrically connected with the endoscope plug, and the endoscope body handle part is electrically connected with the endoscope plug. The camera shooting assembly is connected to the far end of the endoscope body handle part, and the endoscope plug is connected to the near end of the endoscope body handle part; the endoscope sheath comprises an insertion catheter and a catheter handle part, the catheter handle part is connected to the near end of the insertion catheter, an endoscope body access port is formed in the catheter handle part, the camera component extends into the insertion catheter through the endoscope body access port, and the endoscope handle part is detachably connected with the catheter handle part. According to the utility model, the camera shooting assembly and the data line for transmitting camera shooting data are repeatedly used, so that the data line which is repeatedly used is a high-quality cable, the stability of data transmission is ensured, the anti-interference performance of the product is improved, and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially, it relates to a kind of electronic endoscope. BACKGROUND

[0002] With minimally invasive surgery gradually popular in the global scope, endoscope industry also enters the rapid development stage, and the continuous update of minimally invasive surgery also drives endoscope type to continue to be rich, which includes electronic endoscope.

[0003] Repeated use endoscope is contacted with patient, medical staff etc., and thus needs to be sterilized and disinfected etc. The sterilization problem of electronic endoscope is also the discussion hotspot in endoscope field, including the following points:

[0004] The first point is sterilization effectiveness, electronic endoscope is sensitive to high temperature due to containing electronic components inside, thus hydrogen peroxide low-temperature plasma sterilization method is generally adopted in the industry for sterilization, but the action principle of this method is more complex compared with traditional high-temperature and high-humidity sterilization, relies on oxidizing agent, ultraviolet and high-energy particle three simultaneous actions to achieve the expected sterilization effect, and if problems such as equipment aging, oxidizing agent failure, insufficient generation of plasma state occur in hospital, its sterilization effectiveness is usually difficult to guarantee, and incomplete sterilization is the most important reason leading to patient cross infection.

[0005] The second point is sterilization resistance, since hydrogen peroxide used in hydrogen peroxide low-temperature plasma sterilization is strong oxidizing agent, and will produce ultraviolet, which will quickly lead to material aging. If general engineering plastics or rubber is used, it will be aged and failed after experiencing 50-100 sterilization cycles, leading to equipment failure and short service life. If special plastics such as PEEK (polyether ether ketone), PPSU (polydimethyl sulfoxide) and fluorine rubber are used to prepare key components, although the service life will be prolonged, the production cost will be greatly increased.

[0006] The third point is sterilization cost, including time cost and consumable cost, low-temperature plasma sterilization used by electronic endoscope needs thorough cleaning and drying before sterilization, and a reprocessing cycle usually takes 1.5-2 hours, and consumable is mainly hydrogen peroxide sterilizing agent, and the consumable cost of single low-temperature plasma sterilization is about 30-100 yuan, which fluctuates according to sterilizer type, mode and inner space.

[0007] The above three sterilization problems increase the threshold for hospitals to use repeated electronic endoscopes.

[0008] In order to solve the sterilization problem, a disposable electronic endoscope is thus generated, but the disposable electronic endoscope is a full-throw endoscope, that is, it needs to be discarded after being used once, therefore, the cost is too high, especially the price of the camera module and the data line for high-performance data transmission is expensive. Secondly, due to the long-distance transmission of the camera module data, there is usually a decoding or signal conversion circuit module in the middle to ensure the stability of signal transmission, which is directly discarded at a high price and causes a large amount of electronic components to pollute the environment.

[0009] In order to reduce the cost of the disposable electronic endoscope, some companies propose a scheme of reusing the camera module, and the remaining parts including the data line for data transmission and the signal conversion module are disposable. Due to the cost pressure of one-time use, the quality of the data line is not very good, which further causes obvious defects in the stability of data transmission, product anti-interference performance and the like. Secondly, the 3-meter cable from the scope to the endoscope host and the signal conversion circuit module are directly discarded at a high cost. Especially with the increasing clarity of CMOS camera, the data transmission amount is large, obviously, the disposable data line cannot meet the requirement of data transmission stability. Practical new type content

[0010] In order to solve the above technical problems, the utility model discloses an electronic endoscope, which comprises a disposable endoscope sheath and a reusable endoscope scope, the endoscope scope comprises a camera assembly, a scope handle part and an endoscope plug, the camera assembly is electrically connected with the endoscope plug, the camera assembly is connected to the distal end of the scope handle part, and the endoscope plug is connected to the proximal end of the scope handle part.

[0011] Optionally, the endoscope sheath further comprises at least one illumination module and a first electrical connection part, the illumination module is arranged at the distal end of the insertion catheter, the illumination module is electrically connected with the first electrical connection part through a first connecting line, and the first electrical connection part is arranged on the catheter handle part.

[0012] The scope handle part is provided with a line connection part, the line connection part comprises a line conductive part and a second electrical connection part, the line conductive part is connected with the camera assembly, the endoscope plug and the second electrical connection part respectively, and the first electrical connection part and the second electrical connection part are conducted after the endoscope scope is connected to the endoscope sheath.

[0013] Optionally, the insertion catheter is provided with an illumination channel, an instrument channel and a mirror body channel, distal ends of the illumination channel and the mirror body channel are sealed by light transmission sheets, the illumination module is located at the distal end of the illumination channel, the mirror body access port is in communication with the mirror body channel, and the camera assembly extends into the mirror body channel through the mirror body access port; the instrument channel interface is provided on the catheter handle part, and the instrument channel interface is in communication with the instrument channel.

[0014] Optionally, the illumination module is an LED component or an optical fiber component, if the illumination module is an optical fiber component, the catheter handle part is further provided with an optical fiber interface for connecting a light source machine, and the optical fiber interface is in communication with the illumination channel.

[0015] Optionally, the catheter handle part is provided with a first mechanical connection part, the mirror body handle part is provided with a second mechanical connection part corresponding to the first mechanical connection part, and the first mechanical connection part and the second mechanical connection part are detachably connected.

[0016] Optionally, the first mechanical connection part and the second mechanical connection part are clamped.

[0017] Optionally, the camera assembly comprises a camera, the camera is electrically connected to the endoscope plug through a data line, the data line comprises at least two sections, and adjacent two sections are connected through a signal conversion circuit module.

[0018] Optionally, the insertion catheter further has a bending section, the bending section is connected with a bending driving mechanism, and the bending section can be bent through the driving of the bending driving mechanism.

[0019] The catheter handle part is provided with a first bending control interface, and the bending driving mechanism is installed on the first bending control interface.

[0020] Alternatively, the mirror body handle part is provided with a second bending control interface, after the endoscope mirror is inserted into the endoscope sheath, the second bending control interface is in communication with the first bending control interface, and the bending driving mechanism is installed on the second bending control interface.

[0021] Optionally, the insertion catheter is provided with a liquid return channel, the catheter handle part is provided with a negative pressure interface, and the liquid outlet of the liquid return channel is in communication with the negative pressure interface.

[0022] Optionally, the liquid return port of the liquid return channel is arranged on the distal end face of the insertion catheter or the side wall of the insertion catheter away from the distal end face of the insertion catheter.

[0023] Optionally, the insertion catheter sequentially comprises a head end, a bending section, a docking section and a main body section from the distal end to the proximal end, and the liquid return port is arranged on the distal end side wall of the main body section or the side wall of the docking section.

[0024] Optionally, the liquid return channel comprises a main liquid return channel and at least one side liquid return channel, the main liquid return channel is arranged in the main body section along the axial direction of the main body section, and the proximal end of the main liquid return channel penetrates the proximal end surface of the main body section; the side liquid return channel is arranged on the side surface of the main body section, one end of the side liquid return channel is communicated with the distal end of the main liquid return channel, and the other end of the side liquid return channel is the liquid return port arranged on the distal end side wall of the main body section.

[0025] Optionally, the liquid return channel comprises a main liquid return channel and at least one side liquid return channel, the main liquid return channel comprises a first main liquid return channel and a second main liquid return channel from the distal end to the proximal end, the first main liquid return channel is arranged in the docking section along the axial direction of the docking section; the second main liquid return channel is arranged in the main body section along the axial direction of the main body section and penetrates the distal end surface and the proximal end surface of the main body section; the side liquid return channel is arranged on the side surface of the docking section, the proximal end of the first main liquid return channel is communicated with the distal end of the second main liquid return channel, the distal end of the first main liquid return channel is communicated with one end of the side liquid return channel, and the other end of the side liquid return channel is the liquid return port arranged on the side wall of the docking section.

[0026] Compared with the prior art, the technical scheme of the embodiment of the utility model has the following beneficial effects:

[0027] The utility model discloses a camera module and the data line that plays transmission camera data including endoscope plug reuse, therefore, the data line of repeated use selects the high -quality cable, guarantees the stability of data transmission and improves the anti -interference performance of product etc.

[0028] Further, since the camera module data needs long distance transmission, therefore, the data line connecting the camera and the endoscope plug can be divided into at least two sections, the adjacent two sections are connected through the signal conversion circuit module, to ensure the stability of signal transmission.

[0029] Further, compared with the existing electronic endoscope, the endoscope provided by the utility model discloses relatively less abandoned components, therefore, has great economic value and environmental protection and other advantages. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0031] Figure 1 is a structural schematic diagram of an electronic endoscope provided by an embodiment of the present application;

[0032] Figure 2 is a structural schematic diagram of an endoscope lens provided by an embodiment of the present application;

[0033] Figure 3 is a structural schematic diagram of an endoscope sheath provided by an embodiment of the present application;

[0034] Figure 4 is a structural schematic diagram of an endoscope lens provided by another embodiment of the present application;

[0035] Figure 5 is a structural schematic diagram of an electronic endoscope provided by another embodiment of the present application;

[0036] Figure 6 is a structural schematic diagram of an insertion catheter provided by an embodiment of the present application;

[0037] Figure 7 is a structural schematic diagram of an endoscope sheath provided by another embodiment of the present application. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0039] The terms "first", "second", "third", "fourth" etc. (if any) in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices. The terms "on" and "above" and any variations thereof are intended to describe the positional relationship, and do not represent a direct contact relationship between the described objects.

[0040] As described in the background, the existing disposable electronic endoscope is a full disposable endoscope, that is, it needs to be discarded entirely after use, therefore, the cost is too high, especially the price of the camera module and the data line for high-performance data transmission is expensive. Secondly, due to the long-distance transmission of camera module data, there are usually decoding or signal conversion circuit modules in the middle to ensure the stability of signal transmission, which is expensive to discard directly, and will cause a lot of electronic components to pollute the environment.

[0041] In order to reduce the cost of disposable electronic endoscopes, some companies have proposed a scheme to reuse the camera module, and the remaining components including the data line for data transmission and the signal conversion circuit module are disposable. Due to the cost pressure of disposable use, the quality of the data line is not very good, which causes obvious defects in data stability transmission, product anti-interference performance, etc. Secondly, the 3-meter cable from the mirror body to the endoscope host and the signal conversion circuit module are directly discarded at a high cost. Especially with the increasing clarity of CMOS cameras, the data transmission volume is large, obviously, the disposable data line cannot meet the requirements of data transmission stability.

[0042] In order to solve the above technical problems, the present application provides an electronic endoscope, please refer to Figures 1 to 7The utility model discloses an endoscope, including disposable endoscope sheath 2 and can be repeatedly used endoscope 1, and the endoscope 1 includes camera assembly 11, endoscope handle 12 and endoscope plug 13, camera assembly 11 with endoscope plug 13 electricity is connected, camera assembly 11 is connected to the distal end of endoscope handle 12, and endoscope plug 13 is connected to the proximal end of endoscope handle 12, and the endoscope sheath 2 includes insertion catheter 21 and catheter handle 22, and catheter handle 22 is connected to the proximal end of insertion catheter 21, and the endoscope sheath 2 is equipped with endoscope access on catheter handle 22, and camera assembly 11 passes through endoscope access and enters insertion catheter 21, and endoscope handle 12 is detachably connected with catheter handle 22.

[0043] The utility model discloses camera assembly 11 and the data line that plays transmission camera data including endoscope plug 13 are repeatedly used, therefore, the data line of repeatedly using selects the high -quality cable, guarantees the stability of data transmission and improves the anti -interference performance of product etc.

[0044] Further, compared with the existing electronic endoscope, the endoscope of the utility model has relatively less discarded parts, and therefore has great economic value and environmental protection advantages.

[0045] Since the electronic endoscope also has an illumination module, the illumination module can be repeatedly used, i.e., the illumination module is part of the endoscope 1, or the illumination module can be disposable, i.e., the illumination module is part of the endoscope sheath 2, and the utility model does not make specific limitations thereon.

[0046] If the illumination module is disposable, the illumination module is part of the endoscope sheath 2, and the illumination module 23 is located outside the camera assembly 11, which helps to ensure the clarity of the camera, and therefore, the utility model preferably uses a disposable illumination module 23.

[0047] Specifically, the endoscope sheath 2 further includes at least one illumination module 23 and a first electrical connection part 25, the illumination module 23 is arranged at the distal end of the insertion catheter 21, the illumination module 23 is electrically connected with the first electrical connection part 25 through a first connecting line 24, and the first electrical connection part 25 is arranged on the catheter handle 22.

[0048] The mirror handle 12 is provided with a line connection part, which comprises a line conductive part and a second electric connection part 121, the line conductive part is connected with the camera assembly 11, the endoscope plug 13 and the second electric connection part 121 respectively, and the first electric connection part 25 is in conduction with the second electric connection part 121 after the endoscope mirror 1 is connected with the endoscope sheath 2.

[0049] The specific structure of the disposable endoscope sheath 2 and the reusable endoscope mirror 1 will be described in detail respectively.

[0050] The insertion catheter 21 is provided with an illumination channel 212, an instrument channel 213 and a mirror channel 211, the distal end faces of the illumination channel 212 and the mirror channel 211 are sealed by light transmission sheets, the illumination module 23 is located at the distal end of the illumination channel 212, the mirror inlet is communicated with the mirror channel 211, and the camera assembly 11 is inserted into the mirror channel 211 through the mirror inlet.

[0051] The light transmission sheets can separate the illumination module 23 and the camera assembly 11 from human tissues, and will not affect the illumination effect and the camera effect.

[0052] The instrument channel interface 221 is communicated with the instrument channel 213.

[0053] The specific type of the illumination module 23 is not limited, and any device capable of illumination is within the protection scope of the utility model.

[0054] In order to ensure the stability of the whole structure after the endoscope mirror 1 is connected with the endoscope sheath 2, the endoscope mirror 1 is fixedly connected with the endoscope sheath 2 after being connected with the endoscope sheath 2, and meanwhile, the endoscope mirror 1 can be detachably separated from the endoscope sheath 2, therefore, in an embodiment of the utility model, the catheter handle 22 is provided with a first mechanical connection part 222, the mirror handle 12 is provided with a second mechanical connection part corresponding to the first mechanical connection part 222, and the first mechanical connection part 222 is detachably connected with the second mechanical connection part.

[0055] The embodiment does not make specific limitation to the detachable connection manner of the first mechanical connecting part 222 and the second mechanical connecting part, such as threaded connection, clamping, etc. In order to facilitate operation, the first mechanical connecting part 222 and the second mechanical connecting part are preferably clamped.

[0056] The camera assembly 11 comprises a camera 111, which is electrically connected with the endoscope plug 13 through a data line, and the data line comprises at least two sections, and adjacent two sections are connected through a signal conversion circuit module.

[0057] The camera assembly 11 further comprises a conducting rod 112, one end of the conducting rod 112 is connected with the camera 111, and the other end is connected with the scope handle part 12; one end of the data line is electrically connected with the camera 111, and the other end directly or indirectly connects with the endoscope plug 13 through the conducting rod 112.

[0058] In the embodiment, the conducting rod 112 supports the data line, and the purpose is to facilitate the camera 111 to be sent into the distal end of the scope channel 211 from the scope access port of the catheter handle part 22.

[0059] If the inserted catheter 21 is a hose or a soft and hard combined tube, the conducting rod 112 is further bendable, such as being made of nickel-titanium alloy.

[0060] Since the camera module data needs to be transmitted over a long distance, the data line connecting the camera 111 and the endoscope plug 13 can be divided into at least two sections, and adjacent two sections are connected through a signal conversion circuit module, so as to ensure the stability of signal transmission. Moreover, the data line and the signal conversion circuit module are both reusable, which further reduces the cost of the endoscope.

[0061] As an embodiment, the data line comprises a first data line section and a second data line section 14, one end of the first data line section is connected with the camera 111, and the other end is connected with the signal conversion circuit module through the conducting rod 112, one end of the second data line section 14 is connected with the signal conversion circuit module, and the other end is electrically connected with the endoscope plug 13.

[0062] The signal conversion circuit module can be arranged on the scope handle part or can not be arranged on the scope handle part, and the utility model does not make specific limitation to this.

[0063] As an embodiment, the signal conversion circuit module is arranged on the scope handle part and is integrated on the line conducting part.

[0064] When the endoscope scope 1 is connected to the endoscope sheath 2, the camera 111 is located at the distal end of the scope channel 211 in the inserted catheter 21.

[0065] The insertion catheter 21 can be a flexible tube, a rigid tube, or a combination of the two, and the utility model does not make any limitation on this. When the insertion catheter 21 is a flexible tube or a combination of the two, the insertion catheter 21 also has a bending section 217, which is connected with the bending driving mechanism, and the bending section 217 can be bent through the driving of the bending driving mechanism.

[0066] As to whether the bending driving mechanism is arranged on the catheter handle portion 22 or the mirror handle portion 12, the utility model does not make any limitation on this.

[0067] As an embodiment, the bending driving mechanism is arranged on the catheter handle portion 22.

[0068] Specifically, the catheter handle portion 22 is provided with a first bending control interface, and the bending driving mechanism is installed on the first bending control interface.

[0069] As another embodiment, the bending driving mechanism is arranged on the mirror handle portion 12.

[0070] Specifically, the catheter handle portion 22 is provided with a first bending control interface, and the mirror handle portion 12 is provided with a second bending control interface, the endoscope mirror 1 is connected to the endoscope sheath 2, the second bending control interface is in communication with the first bending control interface, and the bending driving mechanism is installed on the second bending control interface.

[0071] This embodiment does not make any limitation on the specific structure of the bending section 217, such as a snake bone tube, and a plurality of linear transmission members, such as steel wire ropes or other linear transmission members, are arranged in the snake bone tube. The bending control of the snake bone tube by the bending driving mechanism is mainly realized by pulling the linear transmission members. This embodiment does not make any limitation on the number of the linear transmission members, such as four linear transmission members, and pulling the four linear transmission members respectively can make the bending section 217 bend in four directions (up, down, left and right). If two linear transmission members are used, pulling the two linear transmission members respectively can make the bending section 217 bend in two directions.

[0072] The distal end of the linear transmission member is fixedly connected with the distal end of the snake bone tube, and the proximal end of the linear transmission member is connected with the bending driving mechanism.

[0073] The utility model does not make any limitation on the field of use of the electronic endoscope, such as being used as a ureteroscope, a renal pelvis mirror, a cystoscope, a gastroscope, a colonoscope, a bronchoscope, a biliary tract mirror or a hysteroscope.

[0074] As in ureteroscopy lithotripsy, the laser lithotripsy process will produce a large number of small particles, and the kidney pelvis may be caused by tissue bleeding and other factors to cause the field to be unclear. Further, the insertion catheter 21 is also provided with a liquid inlet channel 215, and the catheter handle 22 is provided with a liquid inlet interface 223. The doctor connects the liquid injection device to the liquid inlet interface 223 of the catheter handle 22, and injects the physiological saline and other liquids into the kidney pelvis through the liquid injection device through the liquid inlet channel 215 to ensure the cleaning of the field of view, and the stones are removed, and the heat generated by the high frequency is taken away. A large amount of liquid irrigation can easily cause the pressure in the kidney pelvis to rise significantly, causing a series of surgical complications, especially fever, severe kidney pain, ureteral postoperative stenosis and other diseases. Therefore, how to reduce the pressure in the kidney pelvis has become a technical problem to be solved in the art.

[0075] In order to solve the above technical problems, in an embodiment of the present application, the insertion catheter 21 is provided with a liquid return channel 214, and the catheter handle 22 is provided with a negative pressure interface 225. The liquid outlet of the liquid return channel 214 is communicated with the negative pressure interface 225.

[0076] The doctor adds the negative pressure device to the negative pressure interface 225, and real-time absorbs the liquid in the kidney pelvis from the liquid return channel 214 through the negative pressure device to reduce the pressure in the kidney pelvis.

[0077] The position of the liquid return port 2141 of the liquid return channel 214 is not limited in this embodiment, such as being provided on the distal end face of the insertion catheter 21 or the side wall of the insertion catheter 21 away from the distal end face of the insertion catheter 21.

[0078] Because the insertion catheter 21 has closely arranged illumination devices, mirror channels 211 and instrument channels 213, if the liquid return channel 214 is added at the head end of the insertion catheter 21, a large number of particles of different sizes after lithotripsy will cause the liquid return channel 214 to be blocked under the action of negative pressure suction, and the liquid return will be difficult.

[0079] In order to solve this technical problem, the present application preferentially provides that the liquid return port 2141 of the liquid return channel 214 is provided on the side wall away from the distal end face of the insertion catheter 21. Therefore, the liquid return port 2141 avoids the stone area, thereby avoiding the stones from entering the liquid return channel 214 from the liquid return port 2141 under the action of negative pressure suction, preventing the liquid return channel 214 from being blocked, and realizing smooth liquid return.

[0080] Further, the insertion catheter 21 sequentially comprises a head end 216, a bending section 217, a docking section 218 and a main body section 219 from far to near, and a proximal end of the main body section 219 is connected with the catheter handle 22. Since the head end 216 of the endoscope is followed by the bending section 217 such as a bendable snake tube, the bending section 217 is complex in structure, and it is difficult to increase the liquid return channel 214 without increasing the outer diameter. In order not to increase the outer diameter of the insertion catheter 21, in an embodiment of the utility model, the liquid return channel 214 is not arranged in the bending section 217 and the head end 216, but is arranged behind the bending section 217, and the liquid return port 2141 is arranged on the lateral wall of the distal end of the main body section 219 or the lateral wall of the docking section 218. Since the liquid return channel 214 is arranged in the main body section 219 and the docking section 218 without increasing the outer diameter, the embodiment increases the liquid return channel 214 without changing the outer diameter of the insertion catheter 21.

[0081] Since the docking section 218 and the main body section 219 are both located behind the bending section 217, the liquid return channel 214 can be arranged only in the main body section 219, and the liquid return port 2141 is arranged on the lateral wall of the main body section 219; or the liquid return channel 214 can be arranged in the main body section 219 and the docking section 218, and the liquid return port 2141 is arranged on the lateral wall of the docking section 218. The two implementation modes are described in detail as follows.

[0082] As an embodiment, the liquid return channel 214 comprises a main liquid return channel and at least one side liquid return channel, the main liquid return channel is arranged in the main body section 219 along the axial direction of the main body section 219, and a proximal end of the main liquid return channel penetrates the proximal end surface of the main body section 219. A distal end of the main liquid return channel can penetrate the distal end surface of the main body section 219, or can not penetrate the distal end surface of the main body section 219, but the distal end of the main liquid return channel does not extend into the docking section 218. The side liquid return channel is arranged on the lateral surface of the main body section 219, one end of the side liquid return channel communicates with the distal end of the main liquid return channel, and the other end of the side liquid return channel is the liquid return port 2141, which is arranged on the distal end lateral wall of the main body section 219.

[0083] In this embodiment, the side liquid return channel corresponds to the liquid return port 2141, and the number of side liquid return channels is not limited in this embodiment, that is, the side liquid return channel can be one or multiple, and multiple side liquid return channels are distributed along the circumference of the main body section 219. Correspondingly, the number of liquid return ports 2141 is also not limited, and the liquid return port 2141 can be one or multiple, and multiple liquid return ports 2141 are distributed along the lateral wall of the main body section 219.

[0084] As another embodiment, the liquid return channel 214 comprises a main liquid return channel and at least one side liquid return channel, the main liquid return channel comprises a first main liquid return channel and a second main liquid return channel in sequence from the distal end to the proximal end, the first main liquid return channel is arranged in the docking section 218 along the axial direction of the docking section 218, the proximal end of the first main liquid return channel penetrates the proximal end surface of the docking section 218, and the distal end of the first main liquid return channel can penetrate the distal end surface of the docking section 218 or not, but the distal end of the first main liquid return channel cannot extend into the curved section 217. The second main liquid return channel is arranged in the main body section 219 along the axial direction of the main body section 219 and penetrates the distal end surface and the proximal end surface of the main body section 219. The side liquid return channel is arranged on the side of the docking section 218, the proximal end of the first main liquid return channel communicates with the distal end of the second main liquid return channel, the distal end of the first main liquid return channel communicates with one end of the side liquid return channel, and the other end of the side liquid return channel is the liquid return port 2141, which is arranged on the side wall of the docking section 218.

[0085] In this embodiment, the side liquid return channel corresponds to the liquid return port 2141, and the number of side liquid return channels is not limited in this embodiment, that is, the side liquid return channel can be one or multiple, and multiple side liquid return channels are distributed along the circumference of the docking section 218. Correspondingly, the number of liquid return ports 2141 is also not limited, and the liquid return port 2141 can be one or multiple, and multiple liquid return ports 2141 are distributed along the circumference of the side wall of the docking section 218.

[0086] In order not to increase the outer diameter of the insertion catheter 21, the instrument channel 213 and the liquid inlet channel 215 can share one channel.

[0087] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An electronic endoscope characterized by comprising: The endoscope sheath comprises an endoscope sheath and a reusable endoscope body, the endoscope body comprises a camera assembly, an endoscope handle and an endoscope plug, the camera assembly is electrically connected with the endoscope plug, the camera assembly is connected to the distal end of the endoscope handle, and the endoscope plug is connected to the proximal end of the endoscope handle; the endoscope sheath comprises an insertion catheter and a catheter handle, the catheter handle is connected to the proximal end of the insertion catheter, the catheter handle is provided with a mirror body access port, the camera assembly is inserted into the insertion catheter through the mirror body access port, and the endoscope handle and the catheter handle are detachably connected.

2. The electronic endoscope according to claim 1, characterized by The endoscope sheath further comprises at least one illumination module and a first electrical connection part, the illumination module is arranged at the distal end of the insertion catheter, the illumination module is electrically connected with the first electrical connection part through a first connecting line, and the first electrical connection part is arranged on the catheter handle. The endoscope handle is provided with a line connection part, the line connection part comprises a line conductive part and a second electrical connection part, the line conductive part is connected with the camera assembly, the endoscope plug and the second electrical connection part respectively, and the first electrical connection part and the second electrical connection part are in conduction after the endoscope body is connected to the endoscope sheath.

3. The electronic endoscope according to claim 2, characterized by The insertion catheter is provided with an illumination channel, an instrument channel and a mirror body channel, the distal ends of the illumination channel and the mirror body channel are sealed by light transmission sheets, the illumination module is located at the distal end of the illumination channel, the mirror body access port is communicated with the mirror body channel, and the camera assembly is inserted into the mirror body channel through the mirror body access port.

4. The electronic endoscope according to claim 3, characterized by The illumination module is an LED component or an optical fiber component, if the illumination module is an optical fiber component, the catheter handle is further provided with an optical fiber interface for connecting a light source machine, and the optical fiber interface is communicated with the illumination channel.

5. The electronic endoscope according to claim 1, characterized by The catheter handle is provided with a first mechanical connection part, the endoscope handle is provided with a second mechanical connection part corresponding to the first mechanical connection part, and the first mechanical connection part and the second mechanical connection part are detachably connected.

6. The electronic endoscope according to claim 5, characterized by The first mechanical connection part and the second mechanical connection part are clamped.

7. The electronic endoscope of claim 1, wherein The camera assembly comprises a camera, the camera is electrically connected with the endoscope plug through a data line, the data line comprises at least two sections, and adjacent two sections are connected through a signal conversion circuit module.

8. The electronic endoscope of claim 1, wherein, The insertion catheter further has a bending section, the bending section is connected with a bending driving mechanism, and the bending section can be bent through the driving of the bending driving mechanism. The catheter handle is provided with a first bending control interface, and the bending driving mechanism is installed on the first bending control interface. Alternatively, the endoscope handle is provided with a second bending control interface, the second bending control interface is communicated with the first bending control interface after the endoscope body is connected to the endoscope sheath, and the bending driving mechanism is installed on the second bending control interface.

9. The electronic endoscope of claim 1, wherein, The insertion catheter is provided with a liquid return channel, the catheter handle is provided with a negative pressure interface, and the liquid outlet of the liquid return channel is communicated with the negative pressure interface.

10. The electronic endoscope according to claim 9, characterized by The liquid return outlet of the liquid return channel is arranged on the distal end face of the insertion catheter or the side wall of the insertion catheter away from the distal end face of the insertion catheter.

11. The electronic endoscope according to claim 10, characterized by The insertion catheter sequentially comprises a head end, a bending section, a docking section and a main body section from distal to proximal, and the liquid return outlet is arranged on the distal end side wall of the main body section or the side wall of the docking section.

12. The electronic endoscope according to claim 11, characterized by The liquid return channel comprises a main liquid return channel and at least one side liquid return channel, the main liquid return channel is arranged in the main body section along the axial direction of the main body section, and the proximal end of the main liquid return channel penetrates the proximal end face of the main body section; the side liquid return channel is arranged on the side of the main body section, one end of the side liquid return channel is communicated with the distal end of the main liquid return channel, and the other end of the side liquid return channel is the liquid return outlet arranged on the distal end side wall of the main body section.

13. The electronic endoscope of claim 11, wherein, The liquid return channel comprises a main liquid return channel and at least one side liquid return channel, the main liquid return channel sequentially comprises a first main liquid return channel and a second main liquid return channel from distal to proximal, the first main liquid return channel is arranged in the docking section along the axial direction of the docking section; the second main liquid return channel is arranged in the main body section along the axial direction of the main body section and penetrates the distal end face and the proximal end face of the main body section; the side liquid return channel is arranged on the side of the docking section, the proximal end of the first main liquid return channel is communicated with the distal end of the second main liquid return channel, the distal end of the first main liquid return channel is communicated with one end of the side liquid return channel, the other end of the side liquid return channel is the liquid return outlet arranged on the side wall of the docking section.

Images