CN118830796A

CN118830796A - Endoscope installation component and endoscope

Info

Publication number: CN118830796A
Application number: CN202310443170.6A
Authority: CN
Inventors: 李大庆; 徐雄; 刘忠辉
Original assignee: Changsha Maggil Medical Technology Co ltd
Current assignee: Changsha Maggil Medical Technology Co ltd
Priority date: 2023-04-23
Filing date: 2023-04-23
Publication date: 2024-10-25

Abstract

The embodiment of the present application provides an endoscope mounting assembly and an endoscope, the endoscope mounting assembly includes a working channel tube, an adapter and a drainage tube, the adapter includes a first adapter sleeve and a second adapter sleeve, the distal end of the first adapter sleeve is provided with a cavity, a cavity area is formed between a part of the circumferential surface of the second adapter sleeve and the inner wall of the plug-in cavity, the proximal end of the second adapter sleeve is inserted into the plug-in cavity, a transfer port is provided on the side wall of the plug-in cavity corresponding to the cavity area, the proximal end of the working channel tube is fixed to the inside of the distal end of the second adapter sleeve and is connected to the cavity area, the inside of the proximal end of the second adapter sleeve is formed with an expansion section that expands in the direction of the first adapter sleeve, and the drainage tube is connected to the transfer port. The endoscope mounting assembly provided by the embodiment of the present application reduces the outer diameter requirement for the insertion tube, the expansion section increases the flow area of the fluid, reduces the flow rate, and the fluid can flow more concentratedly to the transfer port, reducing the probability of the fluid overflowing from the proximal end of the cavity area.

Description

Endoscope installation component and endoscope

Technical Field

The application relates to the technical field of medical instruments, in particular to an endoscope mounting assembly and an endoscope.

Background

In the related art, in order to reduce the diameter of an insertion tube of an endoscope as much as possible for facilitating a surgical operation, a portion of the endoscope is provided in common with a working channel through which surgical instruments pass and a drain channel for draining liquid in a human or animal body. When using an endoscope for surgery or examination, aspiration drainage is sometimes required when the surgical instrument is operated, and when aspirating drainage, some of the liquid in the human or animal body may undesirably leak (flow out or spill) along the instrument channel rather than being completely controllably drained from the drainage channel. Also, unintended leakage of fluid from the working channel may accidentally transfer pathogens to the operator or contaminate the surgical environment, and may even present a risk of infection to the patient or animal.

The information disclosed in this background section is only for enhancement of understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information has become known to a person of ordinary skill in the art.

Disclosure of Invention

In view of the foregoing, it is desirable to provide an endoscope mounting assembly and an endoscope that reduces the risk of leakage of liquid from a working channel tube. In order to achieve the above object, the technical solution of the embodiment of the present application is as follows:

an embodiment of the present application provides an endoscope mounting assembly including:

A handle assembly;

An insertion tube having a proximal end connected to the handle assembly;

a working channel tube, wherein a working channel for a surgical instrument to pass through is formed in the working channel tube, and the working channel tube is arranged in the insertion tube in a penetrating manner;

The switching part is fixed on the handle assembly and comprises a first switching sleeve and a second switching sleeve which are in butt joint, a plug cavity is formed at the far end of the first switching sleeve, the proximal end of the second switching sleeve is inserted into the plug cavity, a cavity area is formed between the partial circumferential surface of the second switching sleeve and the inner wall of the plug cavity, a switching port is formed on the side wall of the plug cavity corresponding to the cavity area, the proximal end of the working channel pipe stretches into and is fixed in the inner part of the far end of the second switching sleeve and is communicated with the cavity area, and an expansion section expanding towards the direction of the first switching sleeve is formed in the inner part of the proximal end of the second switching sleeve;

and one end of the liquid discharge pipe is communicated with the switching port and is used for leading out fluid from the working channel pipe.

In some embodiments, the cross-sectional area of the diverging section increases in sequence in a direction away from the working channel tube.

In some embodiments, the second adapter sleeve comprises a sealing shaft section, a circumferential surface of the sealing shaft section is in sealing interference fit with the plug cavity, a shaft end face of the sealing shaft section and a cavity end face of the plug cavity facing the shaft end face are arranged at intervals, and the adapter is arranged at the bottom of a circumferential side wall between the shaft end face and the cavity end face.

In some embodiments, the second adapter sleeve includes a collapsed shaft segment connected to the proximal end of the sealing shaft segment, the collapsed shaft segment having an outer diameter less than an outer diameter of the sealing shaft segment, the expanded segment extending from an interior of the sealing shaft segment to a proximal end face of the collapsed shaft segment.

In some embodiments, the first adapter sleeve has a first shaft hole, the socket cavity is located at the distal end of the first shaft hole, the inner diameter of the socket cavity is greater than the inner diameter of the distal end of the first shaft hole, a cavity end face is formed at the junction of the socket cavity and the first adapter sleeve, the first adapter sleeve has a ring table, the ring table is located in the socket cavity and surrounds the distal end of the first shaft hole, and the ring table and the circumferential side wall of the socket cavity are arranged at intervals.

In some embodiments, the end face of the annular land and the end face of the shrink shaft section are spaced apart.

In some embodiments, the cross-sectional area of the first shaft bore decreases continuously in the proximal to distal direction.

In some embodiments, the endoscope mounting assembly includes a screw cap removably capped at a proximal end of the first adapter sleeve, the screw cap including a cap body and a protrusion protruding from an interior of the cap body toward the first adapter sleeve, the protrusion extending into and sealing the first shaft bore.

In some embodiments, the handle assembly includes a handle and a grip disposed on a bottom side of the handle, the working channel tube extends along a length of the handle, and an end of the drain tube remote from the handle extends along the length of the grip to an end of the grip remote from the handle.

In some embodiments, the endoscope mounting assembly comprises an adapter, a first adapter cavity and a second adapter cavity are formed in the adapter, the first adapter cavity is communicated with the adapter, the second adapter cavity is communicated with one end of the liquid drain pipe, which is close to the handle, the first adapter cavity is arranged along the length direction of the handle, and the second adapter cavity is arranged along the length direction of the handle.

In some embodiments, the drain pipe includes first drain section, turn section and second drain section, the part orientation of drain pipe is kept away from the direction protrusion of switching portion is in order to form turn section, first drain section stretches into and is fixed in the second switching intracavity, the second drain section is followed the length direction of handle extends, turn section connects first drain section with the second drain section.

In some embodiments, the endoscope mounting assembly comprises a liquid inlet tube having one end for introducing an external fluid and the other end for communicating with the insertion tube.

The embodiment of the application provides an endoscope, which comprises a video tube and the endoscope installation assembly according to any embodiment of the application, wherein the video tube is in plug fit with the endoscope installation assembly.

In some embodiments, the endoscope mounting assembly includes a viewing cannula disposed through the interior of the insertion tube, the viewing cannula having a viewing channel therein, the viewing tube being inserted into the viewing channel, a distal end of the viewing cannula having a closed optical window.

In some embodiments, the endoscope mounting assembly includes a cable having one end electrically connected to a light emitter and the other end extending to the handle assembly, and the light emitter is disposed at the distal end of the insertion tube for providing illumination to the field of view of the viewing tube.

According to the endoscope installation assembly provided by the embodiment of the application, the liquid discharge pipe is arranged outside the insertion pipe, and liquid in a human body or an animal body flows out from the switching port in the switching part after passing through the working channel pipe and then flows out from the liquid discharge pipe, so that an independent liquid discharge pipe does not need to be additionally arranged in the insertion pipe, the space of the insertion pipe is not occupied, the requirement on the outer diameter of the insertion pipe is reduced, and the aperture requirement on a natural cavity channel or a minimally invasive incision is small. The expansion section in the switching part is communicated with the cavity area and the plug-in cavity, so that the effective volume of the flow channel is rapidly increased, when the liquid in the human body or animal body flows through the expansion section, the flow speed is reduced, the static pressure is increased, the liquid in the human body or animal body can flow to the switching port more intensively, and the leakage probability of the liquid in the human body or animal body from the proximal end part of the cavity area is reduced; in addition, the expansion section can enlarge the insertion space of the surgical instrument and reduce the probability of the surgical instrument to be placed in dead angles.

Drawings

FIG. 1 is a schematic view of an endoscope according to an embodiment of the present application;

FIG. 2 is an exploded view of the endoscope of FIG. 1;

FIG. 3 is a schematic view illustrating the fit of the internal structure of the endoscope of FIG. 1;

FIG. 4 is a schematic view of the endoscope of FIG. 1 from another perspective;

FIG. 5 is a schematic cross-sectional view of the endoscope shown in FIG. 1;

FIG. 6 is an enlarged schematic view of a cross-section of the adapter and screw cap of FIG. 5;

FIG. 7 is a schematic cross-sectional view of a portion of the structure of the endoscope shown in FIG. 1;

FIG. 8 is a schematic cross-sectional view of an endoscope mounting assembly in accordance with an embodiment of the present application;

FIG. 9 is a schematic cross-sectional view of a portion of the structure of the endoscope mounting assembly shown in FIG. 8;

FIG. 10 is a schematic view of the mating of the mounting bracket, video sleeve, working channel tube, cable, light emitter shown in FIG. 2;

FIG. 11 is a schematic view of the mating of the mounting bracket, the video sleeve, the working channel tube, the cable, and the illuminator of FIG. 2 at another viewing angle;

FIG. 12 is a schematic cross-sectional view of the distal end of the endoscope mounting assembly of FIG. 7, with the light emitters, cables, optical windows and glue lines omitted;

FIG. 13 is a schematic cross-sectional view of the distal end of the endoscope mounting assembly of FIG. 7 mated together, with the glue line omitted;

FIG. 14 is a schematic cross-sectional view of a distal end face of the endoscope mounting assembly of FIG. 7;

FIG. 15 is a schematic view of the view tube of FIG. 2;

FIG. 16 is an exploded view of the view tube of FIG. 2;

fig. 17 is a schematic cross-sectional view of the view tube of fig. 2.

Description of the reference numerals

1-An endoscope assembly; 1 a-a data exchange interface;

10-a handle assembly; 101-a handle; 102-a handle; 103-a first clamping part; 10 a-a mounting port; 10 b-through holes; 11-an insertion tube assembly; 110-inserting a tube; 110 a-a liquid outlet; 111-fixing a bracket; 111 a-a first hole; 111 b-a second hole; 111 c-a through hole; 111 d-arc surface; 1111-mounting blocks; 112-encapsulating the layer;

12-working channel tube; 12 a-outlet;

13-a video sleeve; 13 a-a video plug port; 13 b-a recess; 130-video channel; 131-a first video sleeve; 132-a second video sleeve; 133-a second electrical terminal; 1311—a first video channel; 134-optical window; 14-a video tube; 141-a disk portion; 1410-a tray; 1411-a tab; 142-core tube; 143-a first electrical terminal; 144-a photoelectric conversion member;

15-end caps; 151-a second clamping portion; 16-cable; 17-a light emitter; 171-a circuit board; 172-a light emitting chip; 18-a joint part; 181-flow channels; 19-a liquid inlet pipe; 20-rotating disc;

21-an adapter; 211-a first adapter sleeve; 2111-cavity area; 211 a-a plug cavity; 211 b-a transfer port; 211 c-cavity end face; 211 d-a first shaft hole; 2112-ring station; 212-a second adapter sleeve; 212 a-a second axial bore; 2121-dilating segment; 2122-sealing the shaft section; 2122 a-shaft end face; 2123-contracting the shaft segment; 213-adaptor; 213 a-a first transfer lumen; 213 b-a second transfer chamber;

22-drainage pipe; 221-a first drain section; 222-turning section; 223-a second drain section; 23-liquid inlet valve; 24-screwing the cover; 241-cover; 242-protrusions.

Detailed Description

In the description of the embodiments of the present application, it should be noted that the directions or positional relationships indicated by the terms "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, only for convenience in describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present application.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second" may include one or more such features, either explicitly or implicitly; in the description of the present application, unless otherwise indicated, the meaning of "a plurality" means two or more.

An embodiment of the present application provides an endoscope mounting assembly comprising a handle assembly 10, an insertion tube assembly 11, a working channel tube 12, an adapter 21, and a drain tube 22.

Referring to fig. 1 to 8, an endoscope 1 according to an embodiment of the present application includes a viewing tube 14 and an endoscope mounting assembly according to any embodiment of the present application, wherein the viewing tube 14 is configured to be inserted into and removed from the endoscope mounting assembly to form the endoscope 1 for examination, diagnosis and surgical treatment of corresponding tissues in a human or animal body.

For ease of description, the end that extends into or near the interior of a human or animal body during operation is referred to as the distal end, and the end that is gripped by or near the operator is referred to as the proximal end.

The handle assembly 10 is provided with a fluid inlet channel. It should be noted that, the fluid inlet channel is a channel for the external fluid passing through the handle assembly 10, and may be a channel formed by a tubular cavity, or may be a combination of a channel formed by a tubular cavity and a channel formed by other assemblies.

The insertion tube assembly 11 includes an insertion tube 110, with the proximal end of the insertion tube 110 being connected to the handle assembly 10.

The working channel tube 12 is internally formed with a working channel through which a surgical instrument passes, the working channel tube 12 is inserted into the insertion tube 110, and an outlet 12a is formed at a distal end surface of the insertion tube 110, the surgical instrument is inserted from the working channel tube 12 and extends into the human body or animal body from the outlet 12a, and the specific type of the surgical instrument is not limited, for example, biopsy forceps, scissors, fixed drills, touch probes, tenaculum forceps, electrodes, and the like.

For some applications requiring access to the human or animal body through a natural cavity or a surgical stoma, in the case of a straight endoscope without a side view or a squint function, an operator has to hold the handle assembly of the endoscope to obtain a suitable viewing range or field of view through an adjustment operation such as "picking" or "prying" for ease of viewing. However, the adjustment operations such as "picking" or "prying" are not too small, on the one hand, for the size of the natural canal or the surgical stoma of the human or animal body, and on the other hand, such adjustment operations are also prone to damage to the human or animal body.

In the related art, the front end of the endoscope does not adopt an optical design with a strabismus function, the camera only can acquire a front image, but has no side view function, in order to acquire a side image of the video tube, a pre-bending video tube is adopted to pre-bend the distal end of the endoscope into a certain angle so as to be convenient for observation, but the pre-bending angle has the problem of inconvenient operation in use, and has the problems of inconvenient adjustment of the visual field range and unsmooth use of instruments.

In the embodiment of the application, the straight endoscope 1 is adopted, the adjustment operations such as picking or prying are greatly reduced, the operator can conveniently obtain a proper observation angle, the far end of the endoscope 1 in the embodiment of the application is also provided with the optical window which can collect light and can controllably change the transmission direction of the optical axis, the optical window can comprise a prism group, a concave lens group and the like, and the transmission direction can be changed after diffuse reflection light rays in human or animal tissues are injected into the optical window, so that the endoscope 1 has a side view or strabismus function.

The distal end surface of the endoscope 1 is not limited in shape, and may be planar, hemispherical, or other shapes. In some examples, the distal end of the endoscope 1 is formed as a bevel, and the angle of inclination may be 0 ° to 90 °, e.g., 0 °,12 °, 17 °, 30 °, 50 °, 70 °, 85 °, 89 °, etc., with a certain angle of inclination facilitating the acquisition of an image by the viewing tube 14 to obtain a larger field of view.

The adapter 21 is secured to the handle assembly 10. The adaptor 21 is fixed to the handle assembly 10 in a non-limited manner, for example, referring to fig. 2 to 4, a proximal end of the handle assembly 10 is provided with a through hole 10b, and the adaptor 21 is fixed to the proximal end of the handle assembly 10 through the through hole 10 b.

The adapter part 21 comprises a first adapter sleeve 211 and a second adapter sleeve 212 which are in butt joint, wherein an inserting cavity 211a is formed at the distal end of the first adapter sleeve 211, the proximal end of the second adapter sleeve 212 is inserted into the inserting cavity 211a, a cavity area 2111 is formed between part of the circumferential surface of the second adapter sleeve 212 and the inner wall of the inserting cavity 211a, and an adapter port 211b is formed on the side wall of the inserting cavity 211a corresponding to the cavity area 2111.

The proximal end of the working channel tube 12 extends into and is secured within the distal end of the second adapter sleeve 212 and communicates with the cavity region 2111. In this manner, surgical instruments can be inserted into working channel tube 12 via cavity region 2111 for performing a surgical procedure, without interference from other components, and for ease of operation.

The working channel tube 12 and the second adapter sleeve 212 are not limited in the manner of being matched, for example, referring to fig. 5 and 6, the second adapter sleeve 212 has a second shaft hole 212a, and the proximal end of the working channel tube 12 is fixed inside the second shaft hole 212 a. The manner in which the working channel tube 12 is secured to the second shaft bore 212a is not limited, and may include, for example, but is not limited to, gluing.

One end of the drain pipe 22 communicates with the junction 211b for drawing out the fluid from the working channel pipe 12.

It will be appreciated that to meet lesion observation or surgical requirements, the diameter of the insertion tube 110 should be as small as possible to reduce damage to the human or animal body.

In the embodiment of the application, the liquid discharge tube 22 is communicated with the working channel tube 12 through the adapter part 21, the liquid discharge tube 22 is not arranged in the insertion tube 110, the liquid in the human body or animal body can be led out by using the working channel tube 12, a separate liquid discharge tube is not required to be additionally arranged in the insertion tube 110, the space of the insertion tube 110 is not occupied, the aperture requirement on a natural cavity channel or a minimally invasive incision is small, and the working reliability of the endoscope 1 is increased.

Specifically, when the insertion tube 110 is inserted through the natural cavity of the human or animal body, the smaller diameter of the insertion tube 110 can reduce the use of auxiliary expansion tools, and effectively reduce the damage to the cavity of the human or animal body; when the insertion tube 110 is placed from a minimally invasive incision, the smaller diameter of the insertion tube 110 can effectively reduce the stoma size, reduce trauma to the patient or animal, and provide for rapid healing thereof.

The liquid discharge tube 22 is not limited in the way of leading out the liquid in the human body or the animal body, and for example, a negative pressure device can be externally connected to one end of the liquid discharge tube 22 away from the working channel tube 12, when suction is needed, the negative pressure device generates negative pressure, so that the working channel tube 12 generates negative pressure, and the liquid to be sucked is conveniently sucked out.

Specifically, in the embodiment of the present application, if aspiration and drainage are needed during the operation, the drainage tube 22 is externally connected with a negative pressure device to generate negative pressure, and the liquid in the human body or animal body flows out from the switching port 211b through the switching part 21 after passing through the working channel tube 12, and then flows out from the drainage tube 22.

The interior of the proximal end of the second adapter sleeve 212 is formed with an expansion section 2121 that expands in the direction of the first adapter sleeve 211.

The surgical instrument can be advanced through the cavity region 2111, the flared section 2121, and into the working channel tube 12 for performing a surgical procedure.

In the operation or examination using the endoscope 1, if the surgical instrument is operated while suction and drainage are performed, a part of the liquid in the human or animal body may undesirably leak (flow out or spill) along the working channel tube, instead of being discharged through the drain tube in a completely controllable manner. Also, unintended leakage of fluid from the working channel may accidentally transfer pathogens to the operator or contaminate the surgical environment, and may even present a risk of infection to the patient or animal.

Therefore, in the embodiment of the present application, the expansion section 2121 increases the effective volume of the flow channel, when the liquid in the human body or animal flows through the expansion section 2121, the flow rate is reduced, the static pressure is increased, and when the liquid is pumped and discharged, the negative pressure generated by the external negative pressure device just guides the liquid in the human body or animal with the enhanced static pressure to flow along the expansion section 2121 towards the adapting port 211b, and then flows out of the liquid discharge pipe 22.

According to the endoscope installation assembly provided by the embodiment of the application, the liquid discharge pipe 22 is arranged outside the insertion pipe 110, and liquid in a human body or an animal body flows out from the switching port 211b in the switching part 21 after passing through the working channel pipe 12 and then flows out from the liquid discharge pipe 22, so that an independent liquid discharge channel is not required to be additionally arranged in the insertion pipe 110, the space of the insertion pipe 110 is not occupied, the requirement on the outer diameter of the insertion pipe 110 is reduced, and the aperture requirement on a natural cavity channel or a minimally invasive incision is small. The expansion section 2121 in the adapter part 21 is communicated with the cavity area 2111 and the plug cavity 211a, so that the effective volume of the flow channel is rapidly increased, when the liquid in the human body or animal body flows through the expansion section 2121, the flow speed is reduced, the static pressure is increased, the liquid in the human body or animal body can flow to the adapter port 211b more intensively, and the leakage probability of the liquid in the human body or animal body from the proximal end of the cavity area 2111 is reduced; in addition, the expansion section 2121 can enlarge the insertion space of the surgical instrument and reduce the probability of placing the surgical instrument into the dead angle.

The manner in which the viewing tube 14 is removably mated with the endoscope mounting assembly is not limited.

In some embodiments, referring to fig. 2 to 5, the endoscope mounting assembly includes a viewing sleeve 13, the viewing sleeve 13 is disposed through the insertion tube 110, the viewing sleeve 13 has a viewing channel 130 therein, the viewing tube 14 is inserted into the viewing channel 130, and a distal end portion of the viewing sleeve 13 has a closed optical window 134.

That is, in this embodiment, the optical window 134 is disposed at the distal end of the viewing tube 13, and the light transmitted from the optical window 134 can be obtained by inserting the viewing tube 14 into the viewing channel 130.

The optical window 134 may include a concave lens, which may be a plano-concave lens, and a total reflection prism that condenses and redirects light for acquisition of images by the viewing tube 14.

The video tube 13 protects the video tube 14, the optical window 134 is in a closed state, so that the video tube 14 is protected, the video tube 14 is facilitated to acquire high-quality images of tissues in a human body or an animal body, and the distal end part of the video tube 14 extends into the distal end part of the video tube 13, so that the images acquired by the video tube 14 are clearer.

The viewing cannula 13 defines a viewing insertion opening 13a at the proximal end of the handle assembly 10, and the viewing tube 14 is detachably inserted into engagement with the viewing channel 130 through the viewing insertion opening 13 a.

The remaining portions of the video channel 130 are closed except for the video insertion/extraction port 13 a.

When in use, the video tube 14 can be directly inserted into the video sleeve 13 or pulled out from the inside of the video sleeve 13 through the video plug opening 13a, the operation is simple, the disassembly and the assembly are convenient, and the video sleeve 13 can protect the video tube 14, so that the video tube 14 can not be contacted with tissues or liquid in a human body or an animal body, the cross infection probability of the video tube 14 when in repeated use can be reduced, the disinfection grade of the video tube 14 is reduced, and the disinfection cost is reduced.

It should be noted that, according to the requirements of medical disinfection and sterilization related specifications, the reusable apparatus needs to be subjected to high-level disinfection after surgery if the apparatus is in contact with human or animal body tissue during surgery, and the disinfection level can be reduced if the surgical apparatus is not in contact with human or animal body tissue, and general disinfection, such as wiping, is required.

In the related art, the end of the viewing tube is exposed at the distal end of the endoscope and contacts endocrine matters of the human body or animal body, etc., and possibly human body or animal body tissues, so that high-level sterilization, such as soaking sterilization, high-temperature steam sterilization, ethylene oxide sterilization, etc., is required after the operation.

The materials of the handle assembly 10, the insertion tube 110, the working channel tube 12 and the video cannula 13 are not limited, and the insertion tube 110 may be a flexible tube or a rigid tube, and the insertion tube 110, the working channel tube 12, the video cannula 13 and the like may be metal or plastic. For example, the handle assembly 10 is made of plastic, and has low use cost, and the working channel tube 12, the video sleeve 13 and the insertion tube 110 are made of steel tubes, so that the handle assembly is high in strength and light in weight.

The handle assembly 10, the insertion tube 110, the working channel tube 12 and the viewing cannula 13 can be used as disposable medical instruments, the viewing tube 14 with high production cost can be reused, and can be directly detached from the viewing cannula 13 after use, and can be reused after wiping-type low-level disinfection.

In this embodiment, the video tube 13 protects the video tube 14, the video tube 14 is not in contact with the human body or the animal body, and is not in contact with the liquid entering the endoscope 1, so as to avoid cross infection caused by incomplete cleaning and disinfection, reduce the probability of image blurring caused by damage to the front end lens of the video tube due to excessive disinfection times in the related art, reuse the video tube 14 only by low-level disinfection, reuse the video tube after disinfection by wiping and other low-level disinfection modes, and have the advantages of convenience, rapidness and low use cost.

In some embodiments, referring to fig. 5 and 6, the cross-sectional area of the flared section 2121 increases in sequence in a direction away from the working channel tube 12.

The flow rate of the fluid is influenced by the flow rate and the flow area, and when the flow rate of the fluid is unchanged, the flow area is increased, and the flow rate of the fluid is reduced. The cross-sectional area of the expansion section 2121 increases in order, that is, the flow area of the fluid increases, the flow rate of the fluid decreases, and the flow stability of the fluid increases, so that the expansion section 2121 guides the fluid to flow intensively toward the adapting port 211b.

Specifically, when the internal liquid of the human or animal body flows to the expansion section 2121 through the working channel tube 12 during the liquid discharge, the expansion section 2121 increases the flow area of the internal liquid of the human or animal body, reduces the flow speed, and increases the static pressure, so that the internal liquid of the human or animal body flows more intensively to the adapting port 211b, and is discharged from the liquid discharge tube 22, and the probability of leakage of the internal liquid of the human or animal body from the proximal end of the cavity region 2111 is further reduced. The sequential increase in cross-sectional area of the expansion section 2121 also facilitates insertion of surgical instruments, reducing the chance of surgical instruments being placed into dead angles.

In some embodiments, referring to fig. 5 and 6, the second adapter sleeve 212 includes a sealing shaft section 2122, and a circumferential surface of the sealing shaft section 2122 is in sealing interference fit with the socket cavity 211 a. The sealing connection between the first adapter sleeve 211 and the second adapter sleeve 212 is realized, and fluid cannot leak out of the second adapter sleeve 212.

It will be appreciated that the circumferential surface of the seal shaft segment 2122 is coated with an adhesive and further bonded to the socket cavity 211a to achieve a secure connection of the second adapter sleeve 212 to the first adapter sleeve 211, thereby increasing the connection stability of the first adapter sleeve 211 to the second adapter sleeve 212 and preventing fluid within the human or animal body from leaking out of the circumferential surface of the seal shaft segment 2122 through the cavity region 2111.

The shaft end face 2122a of the seal shaft section 2122 is spaced from the cavity end face 211c of the insertion cavity 211a facing the shaft end face 2122a, and the adapter 211b is provided at the bottom of the circumferential side wall between the shaft end face 2122a and the cavity end face 211 c. The space between the shaft end face 2122a and the cavity end face 211c can also expand the capacity, thereby increasing the flow area of the internal liquid of the human or animal body, and thus facilitating the smooth outflow of the internal liquid of the human or animal body from the joint 211 b.

In some embodiments, referring to fig. 5 and 6, the second adapter sleeve 212 includes a contracted shaft section 2123 coupled to a proximal end of the sealing shaft section 2122, the contracted shaft section 2123 having an outer diameter smaller than an outer diameter of the sealing shaft section 2122, and an expanded section 2121 extending from an interior of the sealing shaft section 2122 to a proximal end face of the contracted shaft section 2123.

In this way, on the one hand, the extension space of the expansion section 2121 is increased, thereby increasing the flow area of the liquid inside the human or animal body, and on the other hand, the capacity of the external space of the expansion section 2121 on the side facing the joint 211b is also increased, specifically, the capacity of the cavity region 2111 is increased, and in this way, the expansion section 2121 communicates with the cavity region 2111, and after the liquid inside the human or animal body flows out from the expansion section 2121, the larger space can be also entered, the flow area of the liquid inside the human or animal body flowing through the expansion section 2121 and the cavity region 2111 is further increased, the static pressure of the liquid inside the human or animal body flowing through the expansion section 2121 and the cavity region 2111 is increased, and the caliber of the joint 211b can also be increased, thereby facilitating the concentrated flow of the liquid inside the human or animal body from the joint 211b to the drain pipe 22.

In some embodiments, referring to fig. 5 and 6, the first adapter 211 has a first shaft hole 211d, the socket cavity 211a is located at a distal end of the first shaft hole 211d, an inner diameter of the socket cavity 211a is larger than an inner diameter of a distal end of the first shaft hole 211d, a cavity end surface 211c is formed at a junction of the first shaft hole 211 and the socket cavity 211, the first adapter 211 has a ring 2112, the ring 2112 is located in the socket cavity 211a and surrounds a distal end of the first shaft hole 211d, and the ring 2112 is spaced from a circumferential sidewall of the socket cavity 211 a.

It will be appreciated that, if a surgical instrument is desired for a surgical procedure, the surgical instrument can extend from the proximal end of the first shaft bore 211d and through the cavity region 2111, the flared section 2121 and into the working channel tube 12 for performing the surgical procedure.

The arrangement of the ring table 2112 further expands the circulation space of the liquid inside the human or animal body in the adapter 21 after flowing out from the expansion section 2121, specifically, further expands the capacity of the cavity area 2111, facilitating the liquid inside the human or animal body to flow from the adapter 211b to the drain pipe 22 in a concentrated manner; on the other hand, the ring table 2112 also facilitates the surgical instrument to be accurately inserted into the second shaft hole 212a through the cavity area 2111 when the surgical instrument is inserted from the first shaft hole 211d, so that the surgical instrument enters the working channel tube 12 to work, and the probability that the surgical instrument can not be inserted into the working channel tube 12 when the space of the cavity area 2111 is too large to push up to the dead angle when the surgical instrument is inserted is reduced. Thus, the ring table 2112 does not interfere with the proper insertion of surgical instruments while ensuring that the volume of the cavity region 2111 is as large as possible.

In some embodiments, referring to fig. 5 and 6, the end surface of the ring table 2112 and the end surface of the retraction shaft segment 2123 are spaced apart to facilitate normal insertion of the surgical instrument and to reduce the risk of fluid flowing from the proximal end of the cavity region 2111 into the first shaft bore 211 d.

In some embodiments, referring to fig. 2, 5 and 6, the endoscope includes a screw cap 24, the screw cap 24 is detachably provided on the proximal end of the first adapter 211, the screw cap 24 includes a cap body 241 and a protrusion 242 protruding from the interior of the cap body 241 toward the first adapter 211, and the protrusion 242 protrudes into the first shaft hole 211d and seals the first shaft hole 211d.

When the surgical instrument is not used, the protrusion 242 seals the first shaft hole 211d, the first shaft hole 211d is in a sealed state, and liquid in the human body or animal body cannot flow out of the first shaft hole 211d, so that pollution is avoided, and normal surgical operation is prevented from being influenced.

When the surgical instrument is used, the first shaft hole 211d is in an open state, if liquid is required to be discharged at the same time, at the moment, the surgical instrument can still stay in the working channel tube 12, negative pressure is generated by negative pressure equipment externally connected with the liquid discharge tube 22, liquid in the human body or animal body intensively flows into the liquid discharge tube 22 from the switching port 211b through the working channel tube 12, the expansion section 2121 and the cavity area 2111, and pollution is not caused by flowing out of the liquid discharge tube through the first shaft hole 211d, so that the purpose of discharging liquid while using the surgical instrument is realized, and the working efficiency of the endoscope 1 is increased.

The material of the protrusion 242 is not limited as long as it can seal the first shaft hole 211 d. Illustratively, the projection 242 may be a medical grade plastic. In other embodiments, the protrusion 242 and the cover 241 may be integrally formed as a single piece of medical plastic, i.e., the screw cap 24 may be formed as a single piece.

In some embodiments, referring to fig. 5 and 6, the cross-sectional area of the first shaft bore 211d decreases continuously from the proximal end to the distal end.

In the process that the protrusion 242 extends into the first shaft hole 211d, the cross-sectional area of the first shaft hole 211d is continuously reduced, so that the protrusion 242 is fixed in the first shaft hole 211d, sealing of the first shaft hole 211d is achieved, and the matching degree and stability of the screw cap 24 and the first adapter sleeve 211 are increased.

In addition, the slow shrinkage structure of the first shaft hole 211d is also convenient for placing surgical instruments and reducing the probability of inserting the surgical instruments into dead angles, the proximal end opening of the first shaft hole 211d is large and is convenient for placing the surgical instruments, the distal end opening of the first shaft hole 211d is small and is opposite to the proximal end opening of the expansion section 2121, and the proximal end opening of the expansion section 2121 is large, so that the probability of inserting the surgical instruments into the dead angles is reduced, and the surgical instruments can smoothly enter the proximal end opening of the expansion section 2121 after extending out from the distal end opening of the first shaft hole 211d, thereby extending into the working channel tube 12 for performing surgical operation.

In some embodiments, referring to fig. 2 and 3, the handle assembly 10 includes a handle 101 and a grip 102 disposed on the underside of the handle 101, the working channel tube 12 extending along the length of the handle 101, and the drain tube 22 extending from an end of the handle 101 away from the handle 102 along the length of the grip 102 to an end of the grip 102 away from the handle 101. The working channel tube 12 extends along the length direction of the handle 101, so that the smoothness of the surgical instrument extending in is improved, the internal structure of the endoscope is more compact, the liquid discharge tube 22 is arranged on the inner side of the handle assembly 10, the space in the handle assembly 10 is fully utilized, and the interference to an operator is avoided during use.

The communication between the drain pipe 22 and the joint 211b is not limited, and may be direct communication or may be realized by other means.

In some embodiments, referring to fig. 2 and 6, the endoscope mounting assembly includes an adapter 213, a first adapter cavity 213a and a second adapter cavity 213b are formed in the adapter 213, the first adapter cavity 213a is communicated with the adapter port 211b, the second adapter cavity 213b is communicated with one end of the drain tube 22 near the handle 101, the first adapter cavity 213a is disposed along the length direction of the handle 102, and the second adapter cavity 213b is disposed along the length direction of the handle 101.

It will be appreciated that if the drain pipe 22 is directly connected to the adapter 211b, and the distance between the adapter 211b and the inner wall of the handle assembly 10 is small, the connection space between the drain pipe 22 and the adapter 211b is insufficient, so that the effective connection between the drain pipe 22 and the adapter 211b is inconvenient.

The specific configuration of the adapter 213 is not limited as long as the drain pipe 22 and the adapter 211b can be made to communicate.

In some embodiments, referring to fig. 8, the liquid discharge tube 22 includes a first liquid discharge section 221, a turning section 222 and a second water outlet section 223, wherein a part of the liquid discharge tube 22 protrudes towards a direction away from the adapting portion 21 to form the turning section 222, the first water outlet section 221 extends into and is fixed in the second adapting cavity 213b, the second water outlet section 223 extends along a length direction of the handle 102, and the turning section 222 connects the first water outlet section 221 and the second water outlet section 223.

Thus, the shape design of the liquid discharge tube 22 is convenient to fully utilize the internal space of the handle assembly 10, facilitate the production and assembly of the adapter 213, the liquid discharge tube 22 and the handle assembly 10, facilitate the liquid discharge tube 22 to draw out the liquid in the human body or animal body flowing out of the adapter 211b, and avoid backflow. In addition, the drain tube 22 is configured to provide additional space within the handle assembly 10 to facilitate assembly and orientation adjustment of the components such as the insertion tube 110.

It will be appreciated that during operation of the endoscope 1, rotation of the insertion tube 110 is required to adjust the orientation of the insertion tube 110 and other components such as the insertion tube 110 to facilitate acquisition of high quality images, and the drain tube 22 is shaped such that sufficient redundancy is provided within the handle assembly 10 to allow the drain tube 22 to remain in position during adjustment of the orientation of the insertion tube 110, such that the presence of redundancy in the drain tube 22 does not pull and interfere with rotation of the insertion tube 110, increasing operational reliability of the endoscope 1.

In some embodiments, referring to fig. 5, 7 and 8, the endoscope mounting assembly includes a fluid inlet tube 19, one end of the fluid inlet tube 19 being adapted to introduce external fluid, and the other end of the fluid inlet tube 19 being adapted to communicate with an insertion tube 110.

It can be understood that the insertion tube 110 has a free space inside, the free space is an unoccupied space inside the insertion tube 110, the liquid inlet tube 19 is communicated with the free space inside the insertion tube 110, the distal end surface of the insertion tube 110 is formed with a liquid outlet 110a, and the free space is communicated with the liquid inlet channel and the liquid outlet 110a.

It will be appreciated that the external fluid flows through the inlet tube 19, the free space, and the outlet 110a to the human or animal body, and the external fluid may be injected into the observed area to expand the observed area for observation, and the external fluid may be a 5% dextrose solution or physiological saline.

The way of introducing the external fluid into the liquid inlet pipe 19 is not limited, for example, referring to fig. 3, the liquid inlet pipe 19 of the liquid inlet pipe 19 is provided with a water inlet valve 23, and the external fluid can be started or stopped according to the actual use requirement.

The communication between the liquid inlet tube 19 and the free space is not limited, and in some embodiments, referring to fig. 5, 7 and 8, the endoscope mounting assembly includes a joint 18, the joint 18 has a flow channel 181, the end of the insertion tube 110 extends into the flow channel 181, the liquid inlet tube 19 is connected to the inlet of the flow channel 181, that is, the flow channel 181 communicates with the free space at the distal end of the liquid inlet tube 19 and the proximal end of the insertion tube 110, and the space in the flow channel 181 and the liquid inlet tube 19 together define at least a part of the liquid inlet channel.

The joint 18 is not limited in the arrangement position, and referring to fig. 5, 7 and 8, for example, the handle assembly 10 has a mounting opening 10a, the joint 18 is rotatably provided in the mounting opening 10a, and the proximal end of the insertion tube 110 is sealingly inserted into the joint 18 and fixed in the joint 18. In this manner, the joint 18 may rotate the insertion tube 110 to adjust the orientation of the insertion tube 110.

External fluid flows into the runner 181 through the liquid inlet pipe 19 and then flows into the human body or animal body from the liquid outlet 110a through the free space of the insertion pipe 110, so that the external fluid flows into the human body or animal body through the unoccupied free space in the insertion pipe 110, so that the observed part is filled with liquid to expand, for example, the uterus is filled with water, the better observation of the visual tube 14 is facilitated, a liquid inlet pipeline is not required to be additionally arranged in the insertion pipe 110, the requirement on the outer diameter of the insertion pipe 110 is reduced, the requirement on the aperture of a natural cavity channel or a minimally invasive incision is small, the diagnosis and treatment efficiency of the endoscope 1 is improved, and the damage to a patient or animal body is reduced.

In some embodiments, referring to fig. 5, the mounting opening 10a is disposed at one end of the handle 101 near the insertion tube 110, and at least a portion of the joint 18 is disposed at the distal inner side of the handle 101, so that the joint 18 drives the insertion tube 110 to rotate to adjust the orientation, and no scratch occurs between the joint and other components.

The end of the liquid inlet pipe 19 far away from the joint part 18 extends to the end of the handgrip 102 far away from the handle 101 along the handgrip 102, so that the interference to an operator in the use process can be avoided.

In some embodiments, referring to fig. 3 and 8, the endoscope mounting assembly includes a turntable 20 disposed outside the handle assembly 10, the turntable 20 is sleeved on the outer peripheral side of the insertion tube 110, and the turntable 20 is rotatably sleeved around the joint portion 18 and detachably fixed with the joint portion 18.

That is, the turntable 20 can drive the joint 18 to rotate, so as to drive the insertion tube 110 to rotate, and when in use, an operator can drive the insertion tube 110, the video sleeve 13, the video tube 14 and other components arranged in the insertion tube 110 to rotate by rotating the turntable 20, so that the requirement of adjusting the azimuth of the endoscope 1 and the requirement of adjusting the operation vision can be met.

It should be noted that, the proximal end of the handle assembly 10 has a disc, the through hole 10b is disposed on the disc, the adapter 21 is disposed through the through hole 10b, when the turntable 20 rotates, the adapter 18 is driven to rotate, the adapter 18 drives the insertion tube 110 to rotate, and simultaneously drives the disc to rotate, that is, when the turntable 20 rotates, the adapter 18, the adapter 21, the insertion tube 110, the video cannula 13 and the video tube 14 all rotate, so as to facilitate the direction adjustment and the surgical field adjustment of the endoscope 1.

The connection manner of the joint portion 18 and the turn table 20 is not limited, and for example, the joint portion 18 may be fixed with the turn table 20 by screws.

The connection between the video tube 14 and the external device is not limited, and may be wired or wireless.

In some embodiments, referring to fig. 3 and 7, the proximal end of the viewing tube 14 has a plurality of first electrical terminals 143 and the viewing cannula 13 has a plurality of second electrical terminals 133, the first electrical terminals 143 and the second electrical terminals 133 being detachably electrically connected, the endoscope mounting assembly including a data exchange interface 1a for interacting with an external device, the data exchange interface 1a being in electrical communication with the second electrical terminals 133. The video tube 14 transmits the image electric signals to the data exchange interface 1a through the first electric terminal 143 and the second electric terminal 133, and then displays the images on the external device, reflecting the condition of the detected part so as to facilitate diagnosis or related operation.

The specific configuration of the view tube 14 is not limited. For example, referring to fig. 15 to 17, the viewing tube 14 includes a disk portion 141 and a core tube 142, and an optical member and a photoelectric conversion member 144 are integrated at a distal end of the core tube 142. The optical component may be one or more lenses for converging and conducting light to the photoelectric conversion component 144.

The photoelectric conversion section 144 is used to convert an optical signal of an optical section into an image electric signal. The photoelectric conversion part 144 may be a CCD (Charge coupled Device ) or CMOS (Complementary Metal Oxide Semiconductor, complementary metal oxide semiconductor), but may be of other types, without limitation.

The disk portion 141 includes a disk body 1410 and a protruding portion 1411 protruding from the disk body 1410 in a direction toward the video sleeve 13, the first electrical terminal 143 is integrated on a side of the protruding portion 1411 toward the video sleeve 13, the disk body 1410 is covered on a proximal end portion of the video sleeve 13, and the core tube 142 is inserted into the video sleeve 13.

The first electrical terminal 143 is integrated on the side of the projection facing the viewing sleeve 13, and establishes a conductive path with the photoelectric conversion part 144 inside the core tube 142, specifically, is transferred to the first electrical terminal 143 through the signal line integrated with the inside of the core tube 142.

Specifically, when the endoscope 1 is in operation, light reflected by an observed portion in a human body or an animal body enters an optical component, the optical component converges and transmits the light to a photoelectric conversion component 144, the photoelectric conversion component 144 converts an optical signal into an image electric signal, the image electric signal is transmitted to a first electric terminal 143 and a second electric terminal 133, and then transmitted to a data exchange interface 1a, and then an image can be displayed on an external device.

It is understood that the photoelectric conversion section 144 acquires an optical signal, generates an image electric signal, and transmits the image electric signal. And the endoscope 1 can process the original image signal through the image processing board, for example, perform noise removal, wide-angle distortion correction, contrast improvement, red-eye effect elimination, etc. on the image so that the quality of the image is better, and then transmit the processed image out. The image processing board is not limited in its installation position, and may be installed on the video tube 14, inside the handle assembly 10, or on an external device, as long as the image can be processed.

The connection manner of the first electric terminal 143 and the second electric terminal 133 is not limited. In some embodiments, referring to fig. 2 to 5, the proximal end of the video cannula 13 passes through the proximal end of the handle assembly 10, the proximal end of the video cannula 13 has a recess 13b and a video insertion opening 13a, the proximal end of the video cannula 13 is recessed toward the direction approaching the insertion tube 110 to form the recess 13b, the second electrical terminal 133 is disposed at the distal end of the recess 13b and the second electrical terminal 133 penetrates the groove wall of the recess 13b along the insertion direction of the video tube 14.

One end of the second electrical terminal 133 is exposed in the recess 13b to be in conductive engagement with the first electrical terminal 143, and the other end extends into the space in the handle assembly 10 so as to be electrically connected to the data exchange interface 1a through a connection wire, and the protruding portion 1411 extends into and is fixed in the recess 13 b. That is, the first electrical terminal 143 and the second electrical terminal 133 are electrically connected and mated in the insertion and extraction direction of the viewing tube 14.

In this way, the second electrical terminal 133 does not interfere with the plug-in engagement of the viewing tube 14 with the viewing sleeve 13, nor does it need to be in direct contact with the viewing tube 14, nor does it connect with the data exchange interface 1 a.

It should be noted that, the insertion orientation of the tube 14 also affects the acquisition of the image of the tube 14, if the tube 14 rotates or deflects during insertion, it affects the tube 14 to acquire the image in the normal orientation, so in the embodiment of the present application, the protrusion 1411 of the tube 14 cooperates with the recess 13b of the tube 13, which can play a role in limiting and orienting when the tube 14 is inserted into the tube 13, increasing the reliability of the insertion of the tube 14, and preventing the tube 14 from being inserted into the tube 13 at any rotation angle, thereby affecting imaging.

The shape of the protruding portion 1411 is not limited, and for example, referring to fig. 15, the cross section of the protruding portion 1411 is generally crescent-shaped, so that when the viewing tube 14 is in insertion-extraction engagement with the viewing sleeve 13, the protruding portion can be engaged with the recess 13b in a limited orientation, and the insertion of the core tube 142 into the viewing sleeve 13 is not affected.

The manner in which the view tube 14 is coupled to the handle assembly 10 is not limited, e.g., by a snap fit, threaded connection, etc.

For example, referring to fig. 2 and 7, the endoscope mounting assembly includes an end cap 15, a first clamping portion 103 is disposed on a proximal end surface of the handle assembly 10, the end cap 15 is covered around a disc portion 141, the disc portion 141 is accommodated inside the end cap 15, a second clamping portion 151 is disposed on a circumferential surface of the end cap 15, and the first clamping portion 103 is detachably clamped with the second clamping portion 151 so as to abut the disc portion 141 against a proximal end portion of the video sleeve 13.

Specifically, the video tube 14 is inserted into the video sleeve 13, the disc 141 is located at the proximal end side of the video sleeve 13, the end cover 15 is covered around the disc 141, the first clamping portion 103 and the second clamping portion 151 are clamped and matched by rotating the end cover 15, the end face of the end cover 15 applies a force towards the distal end to the disc 141, and the disc 141 is abutted against the end of the video sleeve 13, so that the video tube 14 is prevented from being separated or loosened.

The first clamping portion 103 and the second clamping portion 151 enable the handle assembly 10 and the video tube 14 to be more convenient to assemble and disassemble, are convenient for medical staff to operate, improve operation convenience, save operation preparation time, and in addition, a connecting structure used for being connected with the handle assembly 10 is not required to be arranged on the video tube 14, so that the structure of the disc portion 141 is simpler.

The specific configuration of the insertion tube assembly 11 is not limited. Referring to fig. 2,10 and 13, the insertion tube assembly 11 includes a fixing bracket 111 and a glue-pouring layer 112, the fixing bracket 111 is disposed at the distal inner side of the insertion tube 110, the fixing bracket 111 is connected with the inner wall of the insertion tube 110, the fixing bracket 111 is formed with a first hole 111a and a second hole 111b, the working channel tube 12 is restrained in the first hole 111a, and the video sleeve 13 is restrained in the second hole 111b to fix the distal end of the working channel tube 12 and the distal end of the video sleeve 13 inside the insertion tube 110.

The shapes of the first hole 111a and the second hole 111b are not limited, and the distal end of the working channel tube 12 and the distal end of the video cannula 13 may be fixed inside the insertion tube 110, for example, the first hole 111a and the second hole 111b may be circular, so that the restriction on the working channel tube 12 and the video cannula 13 is stronger, and the fixing effect of the fixing bracket 111 is improved.

The fixing bracket 111 can reliably fix the distal ends of the working channel tube 12 and the video cannula 13 inside the insertion tube 110, simply and effectively positions the relative positions between the video cannula 13 and the working channel tube 12, and also plays a supporting role on the distal ends of the video cannula 13 and the working channel tube 12, so that the cantilever support form of the video cannula 13 and the working channel tube 12 in the insertion tube 110 is avoided, interference between the working channel tube 12 and the video cannula 13 can not occur, shaking of the working channel tube 12 and the video cannula 13 in the swinging process of the endoscope 1 is reduced, and the working stability of the endoscope 1 is increased.

The specific configuration of the fixing bracket 111 is not limited, and in some embodiments, referring to fig. 10 to 13, the fixing bracket 111 includes two separately designed mounting blocks 1111, the working channel tube 12 and the video sleeve 13 are arranged along a first direction, and the two mounting blocks 1111 are oppositely arranged along a second direction and surround a first hole 111a and a second hole 111b, wherein the first direction and the second direction are perpendicular.

The two mounting blocks 1111 are configured to facilitate clamping of the working channel tube 12 and the video sleeve 13 from both sides of the working channel tube 12 and the video sleeve 13, ensure that the fixing bracket 111 can effectively contact the working channel tube 12 and the video sleeve 13, and promote positioning reliability of the fixing bracket 111.

The first direction and the second direction may be any directions as long as the first direction and the second direction are made perpendicular. Specifically, the first direction refers to the direction of the line connecting the center of the working channel tube 12 and the center of the video cannula 13.

During assembly, the working channel tube 12, the viewing cannula 13, and the mounting block 1111 may be adhesively joined together to form a pre-assembled unit that is then placed into the insertion tube 110.

In some embodiments, referring to fig. 10 to 13, the outer circumferential surface of the mounting block 1111 facing the inner wall of the insertion tube 110 has an arc surface, the arc surface is fitted to the inner wall of the insertion tube 110, the insertion tube 110 supports the mounting block 1111, and the insertion tube 110 is more tightly connected to the mounting block 1111.

Illustratively, the mounting block 1111 and the inner wall of the insertion tube 110 may be adhesively coupled together.

In some embodiments, referring to fig. 2,5 and 10, the endoscope mounting assembly includes a cable 16 and a light 17 for illuminating the field of view of the viewing tube 14, one end of the cable 16 being electrically connected to the light 17 and the other end extending to the handle assembly 10.

The light emitter 17 is provided at the end of the viewing sleeve 13, specifically, at the distal end face of the fixing bracket 111.

The cable 16 is used for transmitting power to the light emitter 17, and the illumination required by the field of view of the viewing tube 14 is provided by the light emitter 17, that is, in this embodiment, the viewing tube 14 does not need to integrate the light emitter 17, so that the installation size required by the light emitter 17 can be saved, and the size requirement on the viewing tube 14 can be reduced.

The arrangement of the cables 16 is not limited.

In some embodiments, referring to fig. 10 to 13, the fixing bracket 111 is provided with a through hole 111c penetrating the fixing bracket 111 along the axial direction of the insertion tube 110, the cable 16 passes through the through hole 111c and is connected to the light emitter 17, a triangular region is formed at adjacent positions of the inner side wall of the insertion tube 110, the outer wall of the working channel tube 12 and the outer wall of the video sleeve 13, and the cable 16 is arranged in the triangular region.

It should be noted that, the cable 16 and the light emitter 17 do not extend into the video tube 13 and the working channel tube 12, and do not affect the operation of the video tube 14 and the surgical instrument, and the cable 16 fully utilizes the free space in the insertion tube 110, so that the overall structure of the endoscope installation assembly is more compact.

The specific structure of the light emitter 17 is not limited.

In some embodiments, referring to fig. 2 and 13, the light emitter 17 includes a circuit board 171 and a light emitting chip 172 integrated on the circuit board 171, the circuit board 171 is attached to a distal end surface of the fixing support 111, and surfaces of the circuit board 171 and the light emitting chip 172 are coated with the glue filling layer 112.

The type of the light emitting chip 172 is not limited, and any component capable of emitting light may be used as the light emitting chip 172, for example, a light emitting diode, etc., for example, the light emitting chip 172 is a light emitting diode, and has small volume, long service life, high brightness, and low heat.

The number of the light emitting chips 172 is not limited, and may be one or more, for example, the light emitting chips 172 may be uniformly disposed around the viewing tube 14 to form an effect of a shadowless lamp, so that a visual blind area is not caused, and shadows are not generated due to wrinkles on the inner wall of an organ, thereby affecting diagnosis or operation.

The circuit board 171 may be a flexible circuit board 171 (english is called Flexible Printed Circuit, abbreviated as FPC), the light emitting chip 172 may be mounted on the flexible circuit board 171 by a surface assembly technology, then the flexible circuit board 171 is mounted on a distal end surface of the fixing support 111, and meanwhile, the flexible circuit board 171 is connected with the cable 16, the cable 16 may be connected with an external interface to supply power to the light emitter 17, for example, in some embodiments, the cable 16 is electrically connected with the data exchange interface 1a, the light emitter 17 obtains electric energy through the data exchange interface 1a, so as to achieve illumination, that is, the data exchange interface 1a may be an integrated interface of data and power of the endoscope 1, for providing power access to electrical devices in the endoscope 1.

It will be appreciated that the light emitter 17 is insulated from the outside space, e.g., the free space where the light emitter 17 is inserted into the tube 110, preventing the human or animal body from getting an electric shock.

The surfaces of the circuit board 171 and the light-emitting chip 172 are coated with the glue-pouring layer 112, and the glue-pouring layer 112 can electrically insulate the circuit board 171 and electronic devices thereof from the internal environment of the human body or the animal body so as to prevent the human body or the animal body from electric shock; in addition, the circuit board 171 and the light emitting chip 172 are prevented from directly contacting with liquid in the human body or animal body, and the life and performance of the light emitting device and the like are prevented from being affected.

The specific configuration of the potting layer 112 is not limited, and illustratively, the construction of the potting layer 112 is as follows: the region enclosed between the distal end surface of the fixing bracket 111 and the inner side wall of the insertion tube 110 and the outer side wall of the optical window 134 is filled with glue, and the outer surface of the glue-filled layer 112 forms at least a part of the distal end surface of the insertion tube 110.

The glue-pouring layer 112 fixes the distal end surfaces of the insertion tube 110, the fixing bracket 111, the working channel tube 12 and the video cannula 13 together, and on the other hand, the glue-pouring layer 112 plays a role in filling up the area between the inner side wall of the insertion tube 110 and the distal end surface of the fixing bracket 111 and the outer side wall of the optical window 134, and the outer surface of the glue-pouring layer 112 forms at least a part of the distal end surface of the insertion tube 110, so that the distal end surfaces of the working channel tube 12, the distal end surface of the video cannula 13 and the distal end surface of the insertion tube assembly 10 are flush, and the ends of the video cannula 13 and the working channel tube 12 do not protrude out of the insertion tube 110, so that the sharp distal end parts of the video cannula 13 and the working channel tube 12 are prevented from touching or even damaging human or animal body tissues.

The forming manner of the video sleeve 13 is not limited, and may be an integral forming structure or a split structure, for example, referring to fig. 2, the video sleeve 13 includes a sleeve and an optical window 134, a distal end of the sleeve is open, the optical window 134 closes a distal end portion of the sleeve, and the glue-pouring layer 112 surrounds between a circumference of the optical window 134 and an inner wall of the insertion tube 110.

The arrangement of the optical window 134 places the distal end of the viewing cannula 13 in a transparent, closed state to prevent the viewing tube 14 from contacting the internal tissues of the human or animal body, increasing the cost of sterilization.

It will be appreciated that the glue layer 112 is disposed circumferentially around the optical window 134 and between the inner wall of the insertion tube 110, i.e., the glue layer 112 does not affect the field of view, i.e., does not interfere with the acquisition of images by the viewing tube 14.

The glue-pouring layer 112 bonds and fixes the optical window 134, the fixing support 111 and the inner wall of the insertion tube 110 into a whole, so that the distal end of the insertion tube 110 has stronger stability, and in addition, the glue-pouring layer 112 can also prevent the optical window 134 from falling off and prevent tissue fluid inside the human body or animal body from penetrating into the tube sleeve, thereby affecting the normal operation of the video tube 14.

The process of assembling the insertion tube assembly 11 with the working channel tube 12 and the video cannula 13 will be briefly described below.

The working channel tube 12 and the visual sleeve 13 are respectively installed in the insertion tube 110, the circumferential side walls of the two installation blocks 1111 attached to the inner side wall of the insertion tube 110, the outer wall of the visual sleeve 13 and the outer wall of the working channel tube 12 are coated with glue, the two glued installation blocks 1111 are respectively installed in the insertion tube 110 to fix the working channel tube 12 and the visual sleeve 13, the insertion tube 110, the working channel tube 12 and the visual sleeve 13 can be positioned by the aid of the jig, the insertion depth of the fixing support 111 can be determined by the jig, specifically, the jig is arranged in the insertion tube 110, after the insertion depth of the fixing support 111 is confirmed, the jig can be taken out from one end of the insertion tube 110 close to the handle assembly 10 after the glue is solidified.

The light emitter 17 is disposed on the distal end face of the fixing support 111, specifically, the light emitter 17 can be fixed on the distal end face of the fixing support 111 by using an adhesive manner, the light emitter 17 is connected with the cable 16, the light emitter 17 and the connection part of the light emitter 17 and the cable 16 are insulated from the outside, the cable 16 extends into the handle assembly 10 from the through hole 111c on the fixing support 111, the distal end of the cable 16 can be fixed at the through hole 111c by using an adhesive manner, the possibility of subsequent movement of the cable 16 is reduced, and the probability of fluid entering the fixing support 111 in a free space in the insertion tube 110 is reduced. After the optical window 134 at the distal end portion of the video sleeve 13 is assembled, an adhesive layer 112 is formed by pouring adhesive into the area enclosed between the distal end surface of the fixing bracket 111 and the inner side wall of the insertion tube 110 and the outer side wall of the optical window 134, further the light emitter 17 is fixed on the distal end surface of the fixing bracket 111, and the distal ends of the fixing bracket 111, the video sleeve 13, the working channel tube 12 and the insertion tube 110 are further sealed and fixed.

It can be understood that before the glue filling, the special jig is inserted into the distal end of the working channel tube 12 to close the outlet 12a, so as to prevent the glue from entering the working channel tube 12, and after the glue filling layer 112 is solidified, the special jig is taken out.

The specific configuration of the tube housing of the video tube 13 is not limited.

In some embodiments, referring to fig. 2 to 5, the sleeve includes a first visual sleeve 131 and a second visual sleeve 132 connected to each other along a length direction, a proximal end of the first visual sleeve 131 forms a visual insertion opening 13a on the handle assembly 10, the first visual sleeve 131 has a first visual channel 1311, a proximal end of the second visual sleeve 132 extends into and is fixed in the first visual channel 1311, and the other end penetrates into the insertion tube 110.

The video tube 14 passes through the first video sleeve 131 and then passes through the second video sleeve 132 through the video plug 13a to penetrate into the insertion tube 110, i.e. the video tube 14 is not contacted with the insertion tube 110 all the time. The cross-sectional area of the first viewing channel 1311 decreases gradually in the proximal to distal direction, providing a guiding and positioning function to facilitate insertion of the viewing tube 14 and also to better secure the second viewing cannula 132 within the first viewing channel 1311.

Hereinafter, the operation of the endoscope 1 will be described by taking the uterus as an observation site.

Before the endoscope 1 is inserted into uterus, the video tube 14 is penetrated into the video sleeve 13 through the video plug-in opening 13a, then the second clamping part 151 on the end cover 15 is clamped with the first clamping part 103 on the video tube 14, the video tube 14 is fixed, the water inlet end of the liquid inlet tube 19 is connected with a uterus-expanding device, the uterus-expanding device provides uterus-expanding liquid, the uterus-expanding Gong Ye flows into the uterus through the liquid inlet tube 19, the runner 181 and the free space in the insertion tube 110, so that the uterus is filled with water to expand, the data exchange interface 1a is connected with external equipment, the cable 16 is electrically connected with the data exchange interface 1a, and the illuminator 17 acquires a power supply required by illumination from the data exchange interface 1a through the cable.

The distal end of the endoscope 1 is placed into the uterus, the illuminator 17 provides illumination for the video tube 14, the distention Gong Ye is injected through certain pressure and speed, the uterine cavity is full, the visual field is clear, the interior of the uterus is observed through the video tube 14, the photoelectric conversion part 144 converts optical signals into electric signals, the electric signals are transmitted to the first electric terminal 143, the second electric terminal 133 and the data exchange interface 1a, and the external equipment converts the image electric signals into video images for display. If further surgical procedures are to be performed, the corresponding instrument may be advanced from the first shaft bore 211d into the working channel tube 12 for operation.

In the case of surgery, if suction is required, suction can be performed by connecting a negative pressure device, and at this time, the surgical instrument can still remain in the working channel tube 12, or the operator can perform the surgical operation while sucking. When the suction drainage is needed, the drainage tube 22 is externally connected with negative pressure equipment to generate negative pressure, so that the liquid in the uterus flows out towards the switching port 211b intensively after passing through the working channel tube 12 and the expansion section 2121, and then is discharged from the drainage tube 22, and the surgical instrument is taken out after the operation is finished. Finally, the end cap 15 is removed, the view tube 14 is pulled out of the view tube 13, and the tube is simply sterilized and wiped, and the insertion tube 110, the fixing bracket 111, the working channel tube 12, the view tube 13, etc. can be discarded as medical waste for the next use.

In the description of the present application, a description of the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic representations of the above terms are not necessarily for the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples described in the present application and the features of the various embodiments or examples may be combined by those skilled in the art without contradiction.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An endoscope mounting assembly, comprising:

Handle assembly;

an insertion tube, the proximal end of which is connected to the handle assembly;

A working channel tube, formed with a working channel for surgical instruments to pass through, the working channel tube being arranged inside the insertion tube;

An adapter portion, the adapter portion is fixed to the handle assembly, the adapter portion includes a first adapter sleeve and a second adapter sleeve that are connected to each other, the distal end of the first adapter sleeve is provided with an insertion cavity, the proximal end of the second adapter sleeve is inserted into the insertion cavity, a cavity area is formed between a part of the circumferential surface of the second adapter sleeve and the inner wall of the insertion cavity, a transfer interface is provided on the side wall of the insertion cavity corresponding to the cavity area, the proximal end of the working channel tube extends into and is fixed to the distal end of the second adapter sleeve and is in communication with the cavity area, and an expansion section that expands toward the direction of the first adapter sleeve is formed inside the proximal end of the second adapter sleeve;

A liquid discharge tube, one end of which is connected to the transfer port, is used to lead out the fluid from the working channel tube.

2 . The endoscope mounting assembly according to claim 1 , wherein the cross-sectional area of the expansion section increases successively in a direction away from the working channel tube. 3 .

3. The endoscope mounting assembly according to claim 1 is characterized in that the second adapter sleeve includes a sealing shaft segment, the circumferential surface of the sealing shaft segment is sealed with the plug-in cavity in an interference fit, the axial end face of the sealing shaft segment is spaced apart from the cavity end face of the plug-in cavity facing the axial end face, and the adapter interface is arranged at the bottom of the circumferential side wall between the axial end face and the cavity end face.

4. The endoscope mounting assembly according to claim 3 is characterized in that the second adapter sleeve includes a contraction shaft segment connected to the proximal end of the sealing shaft segment, the outer diameter of the contraction shaft segment is smaller than the outer diameter of the sealing shaft segment, and the expansion segment extends from the inside of the sealing shaft segment to the proximal end face of the contraction shaft segment.

5. The endoscope mounting assembly according to claim 4 is characterized in that the first adapter sleeve has a first axial hole, the plug-in cavity is located at the distal end of the first axial hole, the inner diameter of the plug-in cavity is larger than the inner diameter of the distal end of the first axial hole, and the junction of the two forms a cavity end face, and the first adapter sleeve has an annular platform, which is located in the plug-in cavity and surrounds the distal end of the first axial hole, and the annular platform is spaced apart from the circumferential side wall of the plug-in cavity.

6 . The endoscope mounting assembly according to claim 5 , wherein the end surface of the annular platform and the end surface of the contraction shaft segment are spaced apart.

7. The endoscope mounting assembly according to claim 5, characterized in that the cross-sectional area of the first axial hole decreases continuously from the proximal end to the distal end.

8. The endoscope mounting assembly according to claim 5 is characterized in that the endoscope mounting assembly includes a screw cap, which is detachably covered on the proximal end of the first adapter sleeve, and the screw cap includes a cover body and a protrusion protruding from the inside of the cover body toward the first adapter sleeve, and the protrusion extends into the first axial hole and seals the first axial hole.

9. The endoscope mounting assembly according to claim 1 is characterized in that the handle assembly includes a handle and a grip arranged on the bottom side of the handle, the working channel tube extends along the length direction of the handle, and the end of the drainage tube away from the handle extends along the length direction of the handle to the end of the handle away from the handle.

10. The endoscope mounting assembly according to claim 9 is characterized in that the endoscope mounting assembly includes an adapter, and a first adapter cavity and a second adapter cavity that are interconnected are formed inside the adapter, the first adapter cavity is connected to the adapter port, and the second adapter cavity is connected to an end of the drainage tube close to the handle, the first adapter cavity is arranged along the length direction of the handle, and the second adapter cavity is arranged along the length direction of the handle.

11. The endoscope mounting assembly according to claim 10 is characterized in that the drainage tube comprises a first drainage section, a turning section and a second drainage section, a portion of the drainage tube protrudes in a direction away from the adapter portion to form the turning section, the first drainage section extends into and is fixed in the second adapter cavity, the second drainage section extends along the length direction of the handle, and the turning section connects the first drainage section and the second drainage section.

12. The endoscope mounting assembly according to claim 1, characterized in that the endoscope mounting assembly comprises a liquid inlet tube, one end of which is used to introduce external fluid, and the other end of which is used to communicate with the insertion tube.

13. An endoscope, characterized in that it comprises a video tube and the endoscope mounting assembly according to any one of claims 1 to 12, wherein the video tube is pluggable in cooperation with the endoscope mounting assembly.

14. The endoscope according to claim 13 is characterized in that the endoscope mounting assembly includes a video sleeve, the video sleeve is inserted into the insertion tube, the video sleeve has a video channel, the video tube is inserted into the video channel, and the distal end of the video sleeve has a closed optical window.

15. The endoscope according to claim 13 is characterized in that the endoscope mounting assembly includes a cable and a light emitter for providing illumination for the field of view of the video tube, the light emitter is arranged at the distal end of the insertion tube, one end of the cable is electrically connected to the light emitter, and the other end extends to the handle assembly.