CN116530917A

CN116530917A - Video tube and endoscope

Info

Publication number: CN116530917A
Application number: CN202310443189.0A
Authority: CN
Inventors: 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: 2023-08-04

Abstract

The embodiment of the application provides a visual tube and endoscope, visual tube be used for with endoscope installation component plug cooperation, visual tube include core pipe and elastic component, and the core pipe includes main insert section and head end section along length direction, and the head end section cup joints with the distal end of main insert section, and head end section and/or main insert section can produce axial displacement towards the direction that is close to each other under the exogenic action, and the elastic component sets up in the core pipe, the elastic component is compressible and resumes the drive head end section and produce the trend of direction axial displacement towards keeping away from main insert section. The embodiment of the application provides a video tube, simple structure, the length of video tube has self-adaptation function to realize that video tube end and endoscope installation component are used for installing the accurate and moderate cooperation of chamber way of video tube, and can effectively solve the problem that the suitability that brings because of preparation and assembly error reduces, be convenient for the video tube acquire high-quality image, the probability that the video tube damage that hard top bumps and cause appears when reducing the video tube installation.

Description

Video tube and endoscope

Technical Field

The application relates to the technical field of medical instruments, in particular to a video tube and an endoscope.

Background

In the related art, an endoscope generally has an insertion tube that extends into a human or animal body through a natural lumen of the human or animal body or a surgical stoma. The endoscope is internally provided with a working channel tube, a liquid inlet channel and a visual device, and is often used as reusable equipment, and high-grade disinfection measures, such as soaking disinfection, are generally adopted for disinfection after the use is finished. The long and narrow complicated cavity structure in the endoscope has the risk of cross infection caused by incomplete disinfection and sterilization; and, high-level disinfection and sterilization measures are complicated in procedure and high in cost. In the related art, the whole endoscope is used as a disposable consumable, and the whole endoscope is discarded after being used, so that the problem of high-grade disinfection and sterilization is avoided, but the use cost is still very high.

In order to reduce the problems of disinfection and sterilization, reduce the probability of cross infection and reduce the use cost, a visual sleeve is arranged in an insertion tube of an endoscope, sleeved outside the visual tube, and provided with a transparent optical window for sealing the far end of the visual sleeve, the visual tube with high cost and a related visual system are designed to be reusable instruments, and the low-cost visual sleeve, the insertion tube and other parts are used as disposable instruments, so that the probability of cross infection is reduced, and the use cost is reduced. However, such an endoscope requires that the optical system at the distal end of the viewing tube is accurately and moderately attached to the optical window of the viewing tube, and if the optical system at the distal end of the viewing tube is not well-fitted to the optical window of the viewing tube, for example, the two are not fully attached, or an excessive force exists between the two, the imaging of the viewing tube may be seriously affected, and even the optical system at the distal end of the viewing tube and the optical window of the viewing tube may be damaged.

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 this, it is desirable to provide a video tube and an endoscope having a length with an adaptive function, a simple structure, and a low use cost. In order to achieve the above purpose, the technical solution of the embodiments of the present application is implemented as follows:

a viewing tube for pluggable engagement with an endoscope mounting assembly, comprising:

the core tube comprises a main insertion section and a head end section along the length direction, the proximal end of the head end section is sleeved with the distal end of the main insertion section, and the head end section and/or the main insertion section can axially move towards the direction approaching to each other under the action of external force;

the elastic piece is arranged in the core tube, can be compressed and can restore to drive the head end section to generate a trend of axial movement towards a direction far away from the main insertion section.

In some embodiments, the head end section includes a first body tube and a first ferrule that is secured to a first body tube proximal end as separate pieces, the main insertion section includes a second body tube and a second ferrule that is secured to a second body tube distal end as separate pieces, and the head end section and the main insertion section are sleeved through the first ferrule and the second ferrule.

In some embodiments, the distal end of the second body tube is formed with a first constriction that is inserted into the interior of the proximal end of the second ferrule, the first ferrule is threaded into the interior of the distal end of the second ferrule, one end of the resilient member abuts the end of the second body tube, and the other end of the resilient member abuts the end of the first ferrule.

In some embodiments, the second ferrule has a receiving cavity therein, the first shrink section is received in the receiving cavity, the first ferrule includes a first sleeve section and a second sleeve section along a length direction, an outer diameter of the first sleeve section is greater than an outer diameter of the second sleeve section, the first sleeve section is inserted into the receiving cavity, a distal end side wall of the receiving cavity protrudes inward to form a limiting wall, a proximal end portion of the first sleeve section is abutted to the elastic element, and a distal end portion of the first sleeve section detachably abuts against the limiting wall.

In some embodiments, the circumferentially outer sidewall of the first socket section is tangential to the sidewall of the receiving cavity.

In some embodiments, the proximal end of the second ferrule is formed with a second constriction that is inserted into the distal interior of the second body tube, the first ferrule is sleeved outside the distal end of the second ferrule, one end of the resilient member abuts the distal end of the second body tube, and the other end of the resilient member abuts the proximal end of the first ferrule.

In some embodiments, the second ferrule is sleeved outside of the first ferrule, and a distal portion of the second ferrule is axially spaced from a proximal portion of the first body tube to define a travel of the head end section in an axial direction; alternatively, the first ferrule is sleeved outside the second ferrule, and the proximal end of the first ferrule is axially spaced from the distal end of the second body tube to define a travel of the head end section in an axial direction.

In some embodiments, the resilient member is a compression spring.

In some embodiments, the distal end of the head end section is integrated with an optical component and a photoelectric conversion component, the photoelectric conversion component is used for converting an optical signal of the optical component into an electrical signal, the video tube comprises a signal wire, the signal wire is arranged in the core tube and extends along the length direction of the core tube, and the distal end of the signal wire is connected with the photoelectric conversion component.

In some embodiments, the viewing tube comprises a tray portion connected to the proximal end of the core tube, the tray portion comprising a tray body and a protruding portion protruding along the tray body toward a direction proximate to the head end section, a distal end of the protruding portion being provided with a plurality of first electrical terminals, a proximal end of the signal wire being electrically connected to the first electrical terminals.

An embodiment of the present application provides an endoscope including:

the endoscope mounting assembly and the video tube according to any embodiment of the present application;

the endoscope mounting assembly includes:

a handle assembly;

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

the video sleeve is arranged in the insertion tube in a penetrating way, a video channel is arranged in the video sleeve, and a closed optical window is arranged at the far end part of the video sleeve;

the core tube may be inserted into the viewing channel, and a distal portion of the head end section may abut an inner surface of the optical window.

In some embodiments, the viewing cannula defines a viewing insertion opening in an outer surface of the handle assembly through which the viewing tube is detachably inserted into engagement with the viewing channel.

In some embodiments, the viewing cannula comprises a first viewing cannula and a second viewing cannula connected to each other in a length direction, a proximal end of the viewing cannula forming the viewing insertion opening at a proximal end of the handle assembly, the first viewing cannula having a first viewing channel, a proximal end of the second viewing cannula extending into and being secured within the first viewing channel, and the other end penetrating into the insertion tube, the cross-sectional area of the first viewing channel decreasing in a proximal to distal direction.

In some embodiments, the viewing cannula has a plurality of second electrical terminals, the viewing cannula includes a tray portion including a tray body and a protruding portion protruding from the tray body toward the viewing cannula, the protruding portion being integrated with a plurality of first electrical terminals toward a side of the viewing cannula, the first electrical terminals being detachably electrically connected with the second electrical terminals, the endoscope mounting assembly including a data exchange interface for interaction with an external device, the data exchange interface being in electrical communication with the second electrical terminals.

In some embodiments, the proximal end of the visual sleeve passes through the proximal end of the handle assembly, the proximal end of the visual sleeve has a recess and the visual insertion opening, the proximal end of the visual sleeve is recessed toward a direction close to the insertion tube to form a recess, the second electrical terminal is disposed at the distal end of the recess and penetrates the wall of the recess along the insertion direction of the visual tube, one end of the second electrical terminal is exposed in the recess, the other end of the second electrical terminal extends into a space in the handle assembly, and the protruding portion extends into and is fixed in the recess.

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.

In some embodiments, the endoscope mounting assembly includes a data exchange interface for interacting with an external device, the cable being electrically connected to the data exchange interface.

The length of the video tube has a self-adaptive function, the length of the video tube can be automatically adapted according to the length of the cavity channel used for installing the video tube in the endoscope installation assembly, so that the accurate and moderate matching of the tail end of the video tube and the cavity channel used for installing the video tube in the endoscope installation assembly is realized, the problem that the suitability is reduced due to the manufacturing error and the assembly error of the cavity channel used for installing the video tube in the video tube and the endoscope installation assembly is effectively solved, the problem of product consistency is solved, the video tube is convenient to acquire a high-quality image, the probability of damage to the video tube caused by hard top collision when the video tube is matched with the endoscope installation assembly in a plugging manner is reduced, the use cost is reduced, and the working efficiency of the video tube is improved.

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 shown in FIG. 1;

FIG. 3 is a schematic view of a view tube according to an embodiment of the present disclosure;

FIG. 4 is an exploded view of the view tube of FIG. 3;

FIG. 5 is a schematic cross-sectional view of the view tube of FIG. 3;

FIG. 6 is an enlarged schematic view of portion A of FIG. 5;

FIG. 7 is a schematic view illustrating the fit of the internal structure of the endoscope of FIG. 1;

FIG. 8 is a schematic view of the internal structure of the endoscope of FIG. 1 shown mated at another view angle;

FIG. 9 is a schematic cross-sectional view of the endoscope shown in FIG. 1;

FIG. 10 is an enlarged schematic view of portion B of FIG. 9;

FIG. 11 is another cross-sectional schematic view of the endoscope of FIG. 1, with the view tube omitted;

FIG. 12 is a schematic cross-sectional view of a portion of the structure of the endoscope shown in FIG. 1;

FIG. 13 is another cross-sectional schematic view of a portion of the structure of the endoscope shown in FIG. 1;

FIG. 14 is a schematic view of the mating of the mounting bracket, viewing sleeve, working channel tube, cable and illuminator of FIG. 2;

FIG. 15 is a schematic view of the structure of FIG. 12 from another perspective;

FIG. 16 is a schematic cross-sectional view of the endoscope of FIG. 1 with the distal components mated, with the light emitter, cable, tube cover, and glue line omitted;

FIG. 17 is a schematic cross-sectional view of the endoscope of FIG. 1 with components at the distal end mated, the glue line omitted;

fig. 18 is a schematic cross-sectional view of a distal end face of the endoscope shown in fig. 1.

Description of the reference numerals

1-an endoscope; 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; 145-an optical component; 142 a-a headend section; 142 b-a main insertion section; 1421-a first body tube; 1422-first ferrule; 1423-a second body tube; 1424-second ferrule; 1423 a-first constriction; 1424 a-receiving chamber; 1422 a-first socket section; 1422 b-second socket section; 14241-a limiting wall; 146-elastic member; 147-signal lines;

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-sealing plug;

21-an adapter; 21 a-a first opening; 21 b-a second opening; 21 c-a third opening; 21 c-a transfer port; 22-drainage pipe; 23-a water inlet valve.

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, and are merely for convenience in describing the embodiments of the present application and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore 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.

Embodiments of the present application provide a viewing tube 14 that includes a core tube 142 and an elastic member 146.

An embodiment of the present application provides an endoscope 1, referring to fig. 1 and 2, the endoscope 1 includes an endoscope mounting assembly and a viewing tube 14 of any embodiment of the present application.

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 video tube 14 is used for being matched with an endoscope mounting assembly in a plug-in manner to form the endoscope 1 for performing examination, diagnosis and operation treatment on internal tissues of a human body or an animal body.

Referring to fig. 3 and 4, the core tube 142 includes a main insertion section 142b and a head end section 142a along a length direction, a proximal end of the head end section 142a is sleeved with a distal end of the main insertion section 142b, and the head end section 142a and/or the main insertion section 142b can move axially toward each other under an external force.

The elastic member 146 is disposed in the core tube 142, and the elastic member 146 is compressible and can restore the drive head end segment 142a to move axially in a direction away from the main insertion segment 142 b.

It should be noted that, the head end section 142a and/or the main insertion section 142b can move axially toward each other under the action of an external force, including various situations. In some embodiments, the head end segment 142a is axially movable by an external force in a direction toward the main insertion segment 142 b; in other embodiments, the main insertion section 142b is axially movable by an external force in a direction toward the head end section 142 a; in still other embodiments, the head end segment 142a and the main insertion segment 142b are axially movable toward one another under an external force.

Specifically, when the viewing tube 14 is in plug-and-socket fit with the endoscope mounting assembly, when the distal end surface of the head end section 142a abuts against the distal inner surface of the channel for mounting the viewing tube 14 in the endoscope mounting assembly, the head end section 142a receives an external force from the distal end surface of the channel for mounting the viewing tube 14 in the endoscope mounting assembly and moves axially in the direction of the main insertion section 142b, and at this time, the elastic member 146 is compressed to generate compression deformation; when the mounting engagement of the viewing tube 14 with the channel of the endoscope mounting assembly for mounting the viewing tube 14 is completed, the resilience of the resilient member 146 urges the head end segment 142a to move axially in a direction away from the main insertion segment 142b, so that the distal end surface of the head end segment 142a is held in abutment with the distal end inner surface of the channel of the endoscope mounting assembly for mounting the viewing tube 14, thereby achieving a stable engagement of the viewing tube 14 with the endoscope mounting assembly.

It will be appreciated that the resilience of the resilient member 146 urges the head end segment 142a to move axially away from the main insertion segment 142b, either in that the head end segment 142a does not move axially under the resilience of the resilient member 146 and is in stable engagement with the endoscope mounting assembly, or in that the head end segment 142a moves axially away from the main insertion segment 142b under the resilience of the resilient member 146 and is in stable engagement with the endoscope mounting assembly.

It will be appreciated that after the tube 14 is mounted in the endoscope mounting assembly, the head end 142a is still subjected to an external force, the external force is removed after the tube 14 is pulled out, the elastic member 146 is deformed again after the tube 14 is completely pulled out, and the head end 142a is also restored to an initial position under the action of the elastic member 146, where the initial position refers to a position when the head end 142a is not acted upon by the external force.

The distal end of the endoscope is provided with an optical window which can collect light and the transmission direction of the optical axis can be controlled to be changed, the optical window can comprise a prism group, a concave lens group and the like, the distal end of the video tube is provided with a video system, and the video system further processes and collects and transmits the light of the optical window and then converts the light signal into an electric signal for transmission. The visual system is a high-precision component, when the visual tube is matched with the endoscope installation component in a plugging manner, the visual system and the optical window can be accurately aligned, the visual system cannot apply excessive acting force to the optical window, and the length of the visual tube cannot exceed the length of a cavity channel for installing the visual tube in the endoscope installation component, so that the problem that the visual tube cannot be matched with the endoscope installation component is solved.

Therefore, in the embodiment of the application, the head end section 142a and/or the main insertion section 142b can axially move towards the direction approaching to each other under the action of external force, the elastic member 146 can compress and can restore to drive the head end section 142a to axially move towards the direction of the main insertion section 142b, so that the length of the video tube 14 has an adaptive function when the video tube 14 is in plug-in fit with the endoscope mounting assembly, the length of the video tube 14 can be automatically adapted to the length of the channel for mounting the video tube 14 inside the endoscope mounting assembly, in addition, driving force can be provided for axially aligning the distal end surface of the head end section 142a with the optical window, so that accurate and moderate fit of the distal end surface of the head end section 142a and the channel for mounting the video tube 14 in the endoscope mounting assembly is realized, the probability that the distal end surface of the head end section 142a and the channel for mounting the video tube 14 in the endoscope mounting assembly are forcibly fit to cause damage of the two is reduced, and the probability that the head end section 142a cannot be tightly attached to the channel for mounting the video tube 14 in the endoscope mounting assembly is tightly to generate a fit gap is reduced, so that the video tube 14 can acquire a high-quality image.

It will be appreciated that the specific configuration of the resilient member 146 is not limited so long as it is capable of being compressed and generates a resilient force such that the head end segment 142a tends to move axially in a direction away from the main insertion segment 142b, the resilient member 146 being illustratively a compression spring.

The endoscope mounting assembly is not limited in the manner of forming the lumen for mounting the viewing tube 14, and in some examples, the endoscope mounting assembly includes a handle assembly 10, an insertion tube assembly 11, and a viewing tube 13, the insertion tube assembly 11 includes an insertion tube 110, a proximal end of the insertion tube 110 is connected to the handle assembly 10, the viewing tube 13 is disposed inside the insertion tube 110, a viewing channel 130 for mounting the viewing tube 14 is provided in the viewing tube 13, that is, in this embodiment, the endoscope mounting assembly is provided with the viewing tube 13 for mounting engagement with the viewing tube 14, that is, for insertion-extraction engagement with the viewing tube 13, and a distal end portion of the viewing tube 13 has a closed optical window 134. The core tube 142 is inserted into the viewing channel 130, and the distal end of the head end segment 142a abuts the inner surface of the optical window 134.

It will be appreciated that in this embodiment, the optical window 134 is formed at the distal end of the viewing cannula 13 and that the viewing tube 14 may be inserted into the viewing cannula 13 to achieve an abutting engagement with the inner surface of the optical window 134.

Specifically, the core tube 142 is inserted into the viewing channel 130, the head end section 142a moves axially towards the direction approaching the main insertion section 142b under the action of external force, the elastic member 146 is compressed and deformed by compression, the elastic member 146 has a tendency to push the head end section 142a to move axially towards the direction away from the main insertion section 142b, driving is provided for axial alignment of the head end section 142a and the optical window 134, the circumference of the head end section 142a is limited by the circumferential inner surface of the viewing channel 130, so that the distal end of the head end section 142a is moderately fitted with the inner surface of the optical window 134, and thus, the length of the core tube 142 can be matched with the viewing channel 130, and the viewing tube 13 can also be protected for the viewing tube 14, so that the viewing tube 14 can obtain high-quality images.

The optical window 134 may include a concave lens, which may be a plano-concave lens, and a total reflection prism, which condenses light and is capable of redirecting the light for the viewing tube 14 to capture an image.

The length of the video tube 14 provided by the embodiment of the application has a self-adaptive function, the length of the video tube 14 can be automatically adapted according to the length of the cavity channel used for installing the video tube 14 in the endoscope installation component, so that the accurate and moderate matching of the distal end of the video tube 14 and the cavity channel used for installing the video tube in the endoscope installation component is realized, when the length of the video tube 14 and the length of the cavity channel used for installing the video tube 14 in the endoscope installation component have larger errors, the head end section 142a of the video tube 14 can be enabled to axially move through the action of external force to shorten the length of the video tube 14, and the head end section 142a can be enabled to axially move towards the direction far away from the main insertion section 142b through the rebound effect of the elastic piece 146, and the distal end inner surface of the cavity channel used for installing the video tube 14 in the endoscope installation component is abutted to be attached, the problem that the manufacturing error and the fitting error of the cavity channel used for installing the video tube in the video tube and the endoscope installation component are reduced is effectively solved, the quality of the video tube 14 is facilitated to be conveniently obtained, the quality of the video tube 14 is reduced, and the quality of the video tube is easy to be damaged when the video tube 14 is pulled out, and the quality of the video tube is convenient to be matched with the top tube 14 is reduced, and the cost of the video tube 14 is reduced.

The handle assembly 10 is provided with a fluid inlet channel. It should be noted that, the liquid inlet channel is a channel for 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 distal end face of the insertion tube 110 has a liquid outlet 110a.

It will be appreciated that the interior of the insertion tube 110 has a free space, which is an unoccupied space inside the insertion tube 110, communicating the liquid inlet channel with the liquid outlet 110a.

It will be appreciated that external fluid flows through the fluid inlet channel, free space, fluid outlet 110a to the human or animal body, expanding the viewing area to view or flush tissue within the human or animal body. The external fluid may be a 5% dextrose solution or physiological saline.

The endoscope mounting assembly includes a working channel tube 12, a working channel for passing a surgical instrument is formed inside the working channel tube 12, the working channel tube 12 is penetrated inside the insertion tube 110, and an outlet 12a is formed at a distal end surface of the insertion tube 110.

Surgical instruments are inserted from the working channel tube 12 and extend from the outlet 12a into the human or animal body, and the specific type of surgical instrument is not limited, e.g., biopsy forceps, scissors, fixed drills, touch probes, tenaculum forceps, electrodes, etc.

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 problems of inconvenient operation in use, inconvenient adjustment of the visual field range and unsmooth practical use of the instrument.

In this application embodiment, adopt straight endoscope 1, the adjustment operation such as "choosing" or "sled" is carried out to the endoscope to the significantly reduced, and the operator of being convenient for obtains suitable viewing angle, and the distal end of endoscope 1 of this application embodiment still has can spotlight and the controllable change optics window 134 of conduction direction of optical axis, can change the conduction direction after the diffuse reflection light in human or animal body tissue is penetrated into the optics and is turned to the subassembly, makes endoscope 1 have 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 fitting manner of the video tube 14 and the video sleeve 13 is not limited, and in some embodiments, referring to fig. 7 to 10, the video sleeve 13 is formed with a video plug 13a at the proximal end of the handle assembly 10, and the video tube 14 is detachably plugged into the video channel 130 through the video plug 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 the video tube 14 is repeatedly used 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 also contacts tissues of the human body or animal body, 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, and the video tube 14 can be reused without high-level disinfection processes such as soaking in disinfectant in the disinfection procedure after operation, and can be reused after disinfection in low-level disinfection modes such as wiping, thereby being convenient and quick and low in use cost.

The specific structure of the head end segment 142a and the main insert segment 142b is not limited, and the manner in which the socket is implemented is not limited.

In some embodiments, referring to fig. 4, 5 and 6, the head end segment 142a includes a first body tube 1421 and a first ferrule 1422, the first ferrule 1422 is secured as a separate component to the proximal end of the first body tube 1421, the main insertion segment 142b includes a second body tube 1423 and a second ferrule 1424, the second ferrule 1424 is secured as a separate component to the distal end of the second body tube 1423, and the head end segment 142a and the main insertion segment 142b are sleeved through the first ferrule 1422 and the second ferrule 1424.

The first body tube 1421 may provide support for the first ferrule 1422, the second body tube 1423 may provide support for the second ferrule 1424, so that stability of the sleeving of the head end section 142a and the main insertion section 1424 may be improved, and the axial lengths and outer diameters of the first ferrule 1422 and the second ferrule 1424 need not be large, so long as the sleeving can be achieved, the outer diameter of the second ferrule 1424 may be substantially identical to the outer diameter of the first body tube 1421, no additional increase in size is required, the installation space of the video tube 14 is reduced, insertion of the video tube 14 into the endoscope installation assembly for installation of the video tube 14 in the channel of the endoscope installation assembly is facilitated, and plug-in fit with the endoscope installation assembly is achieved, in particular, insertion of the video tube 14 into the video channel 130 is facilitated.

The materials of the first main body pipe 1421, the first sleeve pipe 1422, the second main body pipe 1423 and the second sleeve pipe 1424 are not limited, for example, the first main body pipe 1421, the first sleeve pipe 1422, the second main body pipe 1423 and the second sleeve pipe 1424 are made of stainless steel materials, so that the processing precision is high, the material strength is high, and the corrosion resistance is realized.

The manner in which the second ferrule 1424 mates with the second body tube 1423 is not limited, and for example, the second ferrule 1424 may be sleeved outside the second body tube 1423, or the second body tube 1423 may be sleeved outside the second ferrule 1424. The manner in which the first ferrule 1422 is sleeved with the second ferrule 1424 is not limited, and for example, the first ferrule 1422 may be sleeved outside the second ferrule 1424, or the second ferrule 1424 may be sleeved outside the first ferrule 1422. So long as the length of the viewing tube 14 can be made adaptively adjustable.

In some embodiments, referring to fig. 6, the distal end of the second body tube 1423 is formed with a first constricted section 1423a, the first constricted section 1423a being inserted into the proximal interior of the second ferrule 1424, the first ferrule 1422 being disposed within the distal interior of the second ferrule 1424.

In other embodiments, the proximal end of the second ferrule 1424 is formed with a second tapered section that is inserted into the proximal interior of the second body tube 1423, and the first ferrule 1422 is sleeved outside the distal end of the second ferrule 1424.

One end of the elastic member 146 abuts an end of the second body tube 1423, and the other end of the elastic member 146 abuts an end of the first ferrule 1422.

Specifically, when the viewing tube 14 is in plug-fit with the viewing cannula 13, the first main body tube 1421 is subjected to an external force from the inner surface of the optical window 134 at the distal end of the viewing cannula 13 toward the second main body tube 1423, so as to push the first ferrule 1422 to move axially toward the direction approaching the second main body tube 1423, and the elastic member 146 is compressed and deformed, at the same time, the first ferrule 1422 is also subjected to a resilient force from the elastic member 146, so that the first ferrule 1422 generates a tendency to move toward the direction away from the second main body tube 1423, and the distal end of the head end section 142a can reliably abut against the inner surface of the optical window 134.

In some embodiments, referring to fig. 6, the second ferrule 1424 has a receiving cavity 1424a therein, the first contraction section 1423a is received in the receiving cavity 1424a, the first ferrule 1422 includes a first sleeve section 1422a and a second sleeve section 1422b along a length direction, an outer diameter of the first sleeve section 1422a is larger than an outer diameter of the second sleeve section 1422b, the first sleeve section 1422a is inserted into the receiving cavity 1424a, a distal side wall of the receiving cavity 1424a protrudes inward to form a limiting wall 14241, a proximal end of the first sleeve section 1422a abuts against the elastic member 146, and a distal end of the first sleeve section 1422a detachably abuts against the limiting wall 14241.

The proximal end of the first sleeving section 1422a is abutted against the elastic element 146, the distal end is affected by the limiting wall 14241, that is, the axial movement of the first sleeving section 1422a is limited in the accommodating cavity 1424a, the accommodating cavity 1424a provides protection for the movement of the first sleeving section 1422a, the movement of the first sleeving section 1422a and the elastic element 146 cannot be affected by other components, scratch is avoided, and the stability of the video tube 14 is improved.

In some embodiments, referring to fig. 6, the circumferential outer sidewall of the first sleeve segment 1422a is tangential to the sidewall of the accommodating cavity 1424a, so that the movement of the first sleeve segment 1422a in the accommodating cavity 1424a is facilitated, so that the movement of the first sleeve segment 1422a is smoother, the resistance during the movement is reduced, and the alignment abutment between the distal end of the head segment 142a and the distal end of the channel of the endoscope mounting assembly for mounting the video tube 14 is more effectively realized, in particular, the alignment abutment between the distal end of the head segment 142a and the optical window 134 of the distal end of the video sleeve 13 is facilitated.

In some embodiments, referring to fig. 6, a second ferrule 1424 is sleeved outside of the first ferrule 1422, with a distal portion of the second ferrule 1424 axially spaced from a proximal portion of the first body tube 1421 to define the axial travel of the head section 142 a.

The head end segment 142a is axially movable in a direction toward the main insertion segment 142b by an external force, the travel of which is limited by the axially spaced arrangement of the distal end of the second ferrule 1424 and the proximal end of the first body tube 1421.

Under the resilience of the resilient member 146, the head end segment 142a is able to move axially in a direction away from the main insertion segment 142b, and its travel is limited by the distance between the distal end of the first socket segment 1422a and the stop wall 14241 of the second socket 1424.

That is, when the head end segment 142a is axially moved by an external force in a direction approaching the main insertion segment 142b, the spaced structure of the distal end portion of the second ferrule 1424 and the proximal end portion of the first main body tube 1421 limits the movement displacement thereof, and when the head end segment 142a is axially moved by the resilience of the resilient member 146 in a direction away from the main insertion segment 142b, the axial distance between the distal end portion of the first ferrule 1422a and the limiting wall 14241 of the second ferrule 1424 limits the movement stroke of the head end segment 142a, so as to limit and protect the head end segment 142a from damage to the lumen of the head end segment 142a and the endoscope mounting assembly for mounting the viewing tube 14, in particular, from damage to the distal end of the viewing tube 14 and the optical window 134.

In other embodiments, the first ferrule 1422 is sleeved outside of the second ferrule 1424, with the proximal end of the first ferrule 1422 being axially spaced from the distal end of the second body tube 1423 to define the axial travel of the head end segment 142 a.

The head end segment 142a is axially movable in a direction toward the main insertion segment 142b by an external force, the travel of which is limited by the axially spaced arrangement of the proximal end of the first ferrule 1422 and the distal end of the second body tube 1423.

That is, when the head end segment 142a is axially moved by an external force in a direction approaching the main insertion segment 142b, the structure of the interval between the proximal end portion of the first ferrule 1422 and the distal end portion of the second main tube 1423 limits the movement displacement thereof, and when the head end segment 142a is axially moved by a restoring force of the elastic member 146 in a direction away from the main insertion segment 142b, the axial distance between the distal end portion of the first ferrule 1422a and the limiting wall 14241 of the second ferrule 1424 limits the movement stroke of the head end segment 142a, so as to limit and protect the head end segment 142a from damaging the channel of the endoscope mounting assembly for mounting the viewing tube 14, in particular, from damaging the distal end of the viewing tube 14 and the optical window 134.

It is to be appreciated that the manner in which the first body tube 1421 is secured to the first ferrule 1422 is not limited, and the manner in which the second body tube 1423 is secured to the second ferrule 1424 is not limited, e.g., glued, welded, etc.

Taking the example of a welded fit of the first body tube 1421 and the first ferrule 1422 and the welded fit of the second body tube 1423 and the second ferrule 1424, the installation of the head end section 142a and the main insertion section 142b in an embodiment of the present application is briefly described in connection with fig. 6.

When installed, the first ferrule 1422 is first inserted into the second ferrule 1424, a portion of the first ferrule 1422 is left in the second ferrule 1424, a portion is passed out of the distal end of the second ferrule 1424 and into the proximal inner side of the first body tube 1421, the first body tube 1421 is welded to the structure in which the first ferrule 1422 is inserted into the first body tube 1421, so that the first body tube 1421 and the first ferrule 1422 form a head end section 142a, and the portion of the first ferrule 1422 not welded to the first body tube 1421 can be axially moved, it being understood that a gap is left between the proximal end of the first body tube 1421 and the distal end of the second ferrule 1424 to define the movement stroke of the head end section 142 a. The resilient member 146 is placed into the second ferrule 1424 and the first necked down segment 1423a of the distal end of the second body tube 1423 extends into the second ferrule 1424, welding the second ferrule 1424 to the first necked down segment 1423a such that the second body tube 1423 and the second ferrule 1424 form the main insertion segment 142b.

The specific configuration of the view tube 14 is not limited.

In some embodiments, referring to fig. 4 to 6, the distal end of the head end section 142a is integrated with an optical component 145 and a photoelectric conversion component 144, the photoelectric conversion component 144 is configured to convert an optical signal of the optical component 145 into an electrical signal, the video tube 14 includes a signal wire 147, the signal wire 147 is disposed in the core tube 142 and extends along the length direction of the core tube 142, and the distal end of the signal wire 147 is connected to the photoelectric conversion component 144.

The optical component 145 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 the optical signal of the optical section 145 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.

It is understood that the photoelectric conversion section 144 acquires an optical signal, generates an image signal, and transmits the image signal. The endoscope 1 may process an original image signal by an image processing board, for example, remove noise, correct wide-angle distortion, improve contrast, remove red-eye effect, and the like, so that the quality of the image is better, and then transmit the processed image. 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. In some embodiments, where the size of the viewing tube 14 is small and the signal transmission path is relatively short, the image processing board may be located on an external device.

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

In some embodiments, referring to fig. 2 to 5, the video tube 14 includes a tray portion 141, the tray portion 141 is connected to a proximal end of the core tube 142, the tray portion 141 includes a tray body 1410 and a protruding portion 1411 protruding along the tray body 1410 toward a direction approaching the head end 142a, a distal end of the protruding portion 1411 is provided with a plurality of first electrical terminals 143, and a proximal end of the signal line 147 is electrically connected to the first electrical terminals 143.

In some embodiments, referring to fig. 7 to 9, the disc portion 141 is disposed on the proximal end of the video sleeve 13, the disc portion 141 includes a disc 1410 and a protruding portion 1411 protruding from the disc 1410 towards the video sleeve 13, the first electrical terminal 143 is integrated on a side of the protruding portion towards the video sleeve 13, the first electrical terminal 143 and the photoelectric conversion component 144 establish a conductive path, and the electrical signal converted by the photoelectric conversion component 144 is transmitted to the first electrical terminal 143 through the signal line 147.

The viewing cannula 13 has a plurality of second electrical terminals 133, the first electrical terminal 143 being detachably and electrically connected to the second electrical terminals 133, the endoscope mounting assembly including a data exchange interface 1a for interacting with external devices, the data exchange interface 1a being in electrical communication with the second electrical terminals 133.

When the endoscope 1 works, light reflected by an observed part in a human body or an animal body is converged and conducted to the optical component 145 through the optical window, the optical component 145 further processes and converges the incoming light and then conducts the converged light to the 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 the first electric terminal 143 and the second electric terminal 133 through the signal wire 147 and then transmitted to the data exchange interface 1a, and then an image can be displayed on external equipment, so that a clear image of the observed tissue is obtained, and diagnosis, treatment and corresponding operation can be performed. The connection manner of the first electric terminal 143 and the second electric terminal 133 is not limited.

Referring to fig. 7 to 9, the proximal end of the video sleeve 13 passes through the proximal end of the handle assembly 10, the proximal end of the video sleeve 13 has a recess 13b and a video insertion opening 13a, the proximal end of the video sleeve 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 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 electrically conductive-engaged 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 to the recess 13b, that is, the first electrical terminal 143 and the second electrical terminal 133 are electrically conductive-connected 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 inserting direction of the video tube also affects the capturing of the image of the video tube 14, if the video tube rotates or deflects during inserting, the capturing of the image of the normal direction of the video tube is affected, so in this embodiment, the protruding portion 1411 of the video tube 14 cooperates with the concave portion 13b of the video sleeve 13, which can play a role in limiting and orienting when the video tube 14 is inserted into the video sleeve 13, increasing the reliability of inserting the video tube 14, and preventing the video tube 14 from being inserted into the video sleeve 13 at any rotation angle, which affects imaging.

It will be appreciated that the circumferential surface of the protrusion 1411 has a taper, the cross-sectional area of the protrusion 1411 gradually decreases in a direction approaching the recess 13b, the portion of the recess 13b corresponding to the protrusion 1411 also has a taper, and the cross-sectional area of the recess 13b gradually decreases in a proximal-to-distal direction, so that when the protrusion 1411 is mated with the recess 13b on the viewing cannula 13, the gradual change structure of the protrusion 1411 and the recess 13b can facilitate the insertion and extraction of the viewing tube 14, and the circumferential surface of the protrusion 1411 can closely conform to the inner wall of the recess 13b, facilitate the limiting orientation of the viewing tube 14, and prevent the viewing tube 14 from rotating at any angle. In addition, when the video tube 14 is inserted into the video sleeve 13, the projection 1411 can also position and fix the video tube 14 together with the head end section 142a and the main insertion section 142b at the distal end thereof, further increasing the positioning reliability of the video tube 14.

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 mated with the handle assembly 10 is not limited, e.g., by a snap fit, threaded connection, etc.

For example, referring to fig. 7 to 9, 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 the disc portion 141, that is, the disc portion 141 is accommodated in 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 disassembly and assembly of the handle assembly 10 and the video tube 14 to be simpler and more convenient, the operation of medical staff is facilitated, the operation convenience is improved, the operation preparation time is saved, and in addition, a connecting structure for connecting 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 construction of the insertion tube assembly 11 is not limited, and referring to fig. 2 and 14, for example, the insertion tube assembly 11 includes a fixing bracket 111 and a glue-pouring layer 112, the fixing bracket 111 is connected to an 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 cannula 13 is restrained in the second hole 111b to fix a distal end of the working channel tube 12 and a distal end of the video cannula 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 distal ends of the working channel tube 12 and the video tube 13 can be reliably fixed inside the insertion tube 110 by the fixing support 111, the relative positions between the video tube 13 and the working channel tube 12 are simply and effectively positioned, the distal ends of the video tube 13 and the working channel tube 12 are supported, the cantilever support form of the video tube 13 and the working channel tube 12 in the insertion tube 110 is avoided, interference between the working channel tube 12 and the video tube 13 is avoided, shaking of the video tube 13 and the working channel tube 12 caused by the swinging process of the endoscope 1 is reduced, and the working stability of the endoscope 1 is improved.

The specific configuration of the fixing bracket 111 is not limited, and in some embodiments, referring to fig. 14 to 18, 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 disposed opposite to each other 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 construction of the two mounting blocks 1111 facilitates clamping the working channel tube 12 and the video sleeve 13 from both sides of the working channel tube 12 and the video sleeve 13, ensures that the fixing bracket 111 can effectively contact the working channel tube 12 and the video sleeve 13, and improves the 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. 14 to 18, 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 secured together.

In some embodiments, referring to fig. 2 and 15, the endoscope mounting assembly includes a cable 16 and a light 17 for providing illumination to 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 distal end of the insertion tube 110, 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. 14 to 18, 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. 17, 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 (all of the english name 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 electric devices in the endoscope 1.

It will be appreciated that the light emitter 17 is arranged to be insulated from the external space, for example, the free space within the insertion tube 110, and that the light emitter 17 is arranged to be insulated from the free space, preventing electric shock to the human or animal body.

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. 9 and 10, the video sleeve 13 includes a sleeve and an optical window 134, the distal end of the sleeve is open, the optical window 134 closes the distal end portion of the sleeve, and the glue-pouring layer 112 surrounds between the circumference of the optical window 134 and the inner wall of the insertion tube 110.

It will be appreciated that the arrangement of the optical window 134 places the distal end of the viewing cannula 13 in a transparent, closed state to prevent the distal end of the viewing tube 14 from contacting the internal tissue of the human or animal body, increasing the sterilization costs, and that the head end segment 142a of the viewing tube 14 can move towards the main insertion segment 142b under the influence of an external force and can move away from the main insertion segment 142b under the influence of the resilience of the resilient member 146, and also provides a drive for the axial alignment of the head end segment 142a and the optical window 134, the circumference of the head end segment 142a being limited by the circumferential inner surface of the viewing channel 130, so that the distal end of the viewing tube 14 can reliably abut against the inner surface of the optical window 134 and remain reasonably in contact with the inner surface of the optical window 134, so that the viewing tube 14 can reliably acquire images of the internal tissue of the human or animal body, the viewing tube 14 can abut against the inner surface of the optical window without resorting to other auxiliary measures, and the viewing tube 14 can be directly withdrawn from the viewing channel 130 without damaging the viewing tube 14 itself.

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 and does not interfere with the acquisition of images by the viewing tube 14.

The glue-pouring layer 112 is used for adhering and fixing the optical window 134, the fixing support 111 and the insertion tube 110 together to form a whole, so that the distal end of the insertion tube 110 is more stable, and in addition, the glue-pouring layer 112 can also prevent the optical window 134 from falling off and prevent tissue fluid inside a human body or an animal body from penetrating into the tube sleeve, so that the normal operation of the video tube 14 is affected.

Hereinafter, the process of assembling the insertion tube assembly 11, the working channel tube 12, and the video cannula 13 will be briefly described with reference to fig. 2 and 9 to 18.

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 assembly of the optical window 134 at the distal end portion of the video cannula 13 is completed, an adhesive layer 112 may be 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 fixing the light emitter 17 on the distal end surface of the fixing bracket 111, and further sealing and fixing the distal ends of the video cannula 13, the working channel tube 12 and the insertion tube 110.

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. 7 to 10, 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.

The insertion tube 110 and the handle assembly 10 may be connected directly or by other means. In some embodiments, referring to fig. 7-10, the endoscope mounting assembly includes a joint portion 18, the handle assembly 10 has a mounting port 10a, the joint portion 18 is rotatably disposed through the mounting port 10a, and the proximal end of the insertion tube 110 is sealingly inserted into the joint portion 18 and secured within the joint portion 18. In this manner, the joint 18 may rotate the insertion tube 110 to adjust the orientation of the insertion tube 110.

The specific structure of the joint portion 18 is not limited. In some embodiments, referring to fig. 7 to 10, the joint 18 has a flow channel 181, the end of the insertion tube 110 extends into the flow channel 181, the endoscope mounting assembly includes a liquid inlet tube 19, one end of the liquid inlet tube 19 is used for introducing external fluid, the other end is connected to an inlet of the flow channel 181, that is, the flow channel 181 communicates with a free space between the distal end of the liquid inlet tube 19 and the proximal end of the insertion tube 110, and the flow channel 181 and the space in the liquid inlet tube 19 together define at least a part of a liquid inlet channel.

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, 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, and the diagnosis and treatment efficiency of the endoscope 1 is improved.

The way of introducing the external fluid into the liquid inlet pipe 19 is not limited, for example, referring to fig. 2, 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.

In some embodiments, referring to fig. 2 and 7, the handle assembly 10 includes a handle 101 and a handgrip 102 disposed at the bottom side of the handle 101, the working channel tube 12 and the video sleeve 13 extend along the length direction of the handle 101, 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 inner side of the distal end of the handle 101, so that the joint 18 drives the insertion tube 110 to rotate to adjust the orientation, and no rubbing occurs with the assembly.

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. 2 and 7, 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.

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.

In some embodiments, referring to fig. 2 and 7, a through hole 10b is provided at a proximal end portion of the handle assembly 10, the endoscope mounting assembly includes a transfer portion 21 and a drain tube 22, the transfer portion 21 passes through the through hole 10b and is fixed at a proximal end of the handle assembly 10, a cavity is formed in the transfer portion 21, a first opening 21a and a second opening 21b are respectively formed at two end faces of the transfer portion 21 in the cavity, a transfer port 21c is provided on a sidewall of the transfer portion 21, the transfer port 21c, the first opening 21a and the second opening 21b are mutually communicated, a proximal end of the working channel tube 12 extends into and is fixed at the first opening 21a, one end of the drain tube 22 is used for discharging fluid, and the other end is connected to the transfer port 21c.

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, and when the turntable 20 rotates, the joint portion 18 rotates to drive the insertion tube 110 to rotate, and at the same time, the disc is also driven to rotate, that is, when the turntable 20 rotates, the joint portion 18, the adapter portion 21, the insertion tube 110, the video cannula 13, and the video tube 14 all rotate, so as to facilitate the azimuth adjustment and the surgical field adjustment of the endoscope 1.

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

In this embodiment, fluid-discharge tube 22 communicates with working channel tube 12 through switching portion 21, uses working channel tube 12 to draw out fluid from human or animal body, need not to additionally set up solitary water outlet channel, does not occupy the space of insert tube 110, reduces the requirement to the outside diameter of insert tube 110, and is little to natural cavity way or minimally invasive incision aperture requirement, improves endoscope 1's diagnosis and treat efficiency.

When the insertion tube 110 is inserted through the natural cavity of the human body or the 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 body or the 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.

When the liquid discharge pipe 22 is used, one end far away from the working channel pipe 12 can be externally connected with negative pressure equipment, when liquid discharge is required to be sucked, the negative pressure equipment generates negative pressure, so that the working channel pipe 12 generates negative pressure, and liquid which is required to be sucked in a human body or an animal body is conveniently sucked out from the working channel pipe 12.

When a surgical operation is required, the surgical instrument may enter the cavity of the adaptor 21 through the second opening 21b and extend from the first opening 21a into the working channel tube 12 to perform the surgical operation. When the surgical instrument is operated, if the suction and the drainage are required to be simultaneously performed, a negative pressure device can be externally connected to one end of the drainage tube 22 away from the working channel tube 12, the negative pressure device can generate negative pressure, and liquid in the human or animal body can flow to the drainage tube from the switching port 21c through the working channel tube 12 and the first opening 21a so as to drain the liquid in the human or animal body to the outside.

In some embodiments, referring to fig. 7, the end of the drain tube 22 away from the adapter 21 extends along the handgrip 102 to the end of the handgrip 102 away from the handle 101, so as to avoid interference to the operator during use. 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 the uterus, the video tube 14 is penetrated into the video sleeve 13 through the video plug opening 13a, the distal end of the video tube 14 is abutted against the optical window 134, the head end section 142a of the video tube 14 is subjected to the external force from the inner surface of the optical window 134 towards the main insertion section 142b, so that the head end section 142a moves towards the main insertion section 142b axially, the elastic piece 146 is compressed and deformed, and generates a rebound force to enable the head end section 142 to generate a trend of moving towards the direction far away from the main insertion section 142b, driving is provided for axial alignment of the head end section 142a and the optical window 134, the circumference of the head end section 142a is limited by the circumferential inner surface of the video channel 130, the distal end of the video tube 14 is reliably abutted against the distal end of the video sleeve 13, and keeps moderately attached, the second clamping part 151 on the end cover 15 is clamped with the first clamping part 103 on the video tube 14, the water inlet end of the liquid inlet tube 19 is connected with a dilatation device, the dilatation device is provided with a dilatation solution Gong Ye, the dilatation device is connected with the uterus 1 through the light emitting cable 181, the light emitting cable 110a and the light emitting cable 1 from the outside the uterus interface 1, and the data exchange interface is connected with the uterus 1, and the data exchange device is connected with the uterus 1 from the outside interface 1 through the light emitting cable 1.

The distal end of the endoscope 1 is placed into the uterus, the illuminator 17 provides illumination for the visual tube 14, the bulge Gong Ye is injected through certain pressure and speed, the uterine cavity is filled, the visual field is clear, the interior of the uterus is observed through the visual 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 through the signal wire 147, the external equipment converts the image electric signals into video images for display, and if further operation is required, corresponding surgical instruments can be stretched into the uterus from the working channel tube 12 through the second opening 21b and the first opening 21a for operation.

In the case of surgery, if suction is required, suction can be applied 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 aspiration drainage is needed, the drainage tube 22 is externally connected with negative pressure equipment to generate negative pressure, so that liquid in the uterus is drained from the drainage tube 22 through the working channel tube 12, and the surgical instrument is taken out after the operation is finished. Finally, the end cap 15 is removed, the viewing tube 14 is pulled out of the viewing cannula 13 for simple sterilization and wiping, and the insertion tube assembly 11, working channel tube 12, viewing cannula 13, etc. may be discarded as medical waste for the next use.

In the description of the present application, a description referring to 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 this 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 herein, as well as the features of the various embodiments or examples, may be combined by those skilled in the art without contradiction.

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

Claims

1. A viewing tube for pluggable engagement with an endoscope mounting assembly, comprising:

2. The view tube of claim 1, wherein the head end section comprises a first body tube and a first ferrule, the first ferrule being secured as a separate component to the first body tube proximal end, the main insertion section comprising a second body tube and a second ferrule, the second ferrule being secured as a separate component to the second body tube distal end, the head end section and the main insertion section being sleeved through the first ferrule and the second ferrule.

3. The viewing tube of claim 2, wherein the distal end of the second body tube is formed with a first constriction, the first constriction being inserted into the interior of the proximal end of the second ferrule, the first ferrule being threaded into the interior of the distal end of the second ferrule, one end of the resilient member abutting the end of the second body tube, the other end of the resilient member abutting the end of the first ferrule.

4. A viewing tube according to claim 3, wherein the second ferrule has a receiving cavity therein, the first necked-in section is received in the receiving cavity, the first ferrule includes a first socket section and a second socket section along a length direction, the first socket section has an outer diameter greater than an outer diameter of the second socket section, the first socket section is inserted into the receiving cavity, a distal side wall of the receiving cavity protrudes inwardly to form a retaining wall, a proximal end of the first socket section abuts the resilient member, and a distal end of the first socket section detachably abuts the retaining wall.

5. The view tube of claim 4, wherein a circumferential outer sidewall of the first socket segment is tangential to a sidewall of the receiving cavity.

6. The viewing tube of claim 2, wherein the proximal end of the second ferrule is formed with a second constriction, the second constriction is inserted into the distal interior of the second body tube, the first ferrule is sleeved outside the distal end of the second ferrule, one end of the resilient member abuts the distal end of the second body tube, and the other end of the resilient member abuts the proximal end of the first ferrule.

7. The view tube of claim 2, wherein the second ferrule is sleeved outside of the first ferrule, a distal portion of the second ferrule being axially spaced from a proximal portion of the first body tube to define a travel of the head end section in an axial direction; alternatively, the first ferrule is sleeved outside the second ferrule, and the proximal end of the first ferrule is axially spaced from the distal end of the second body tube to define a travel of the head end section in an axial direction.

8. The viewing tube of claim 1, wherein the resilient member is a compression spring.

9. The tube of claim 1, wherein the distal end of the head end section is integrated with an optical component and a photoelectric conversion component for converting an optical signal of the optical component into an electrical signal, the tube comprising a signal line disposed within the core tube and extending along a length direction of the core tube, the distal end of the signal line being connected to the photoelectric conversion component.

10. The tube of claim 9, wherein the tube comprises a disk portion connected to the proximal end of the core tube, the disk portion comprising a disk body and a protrusion protruding along the disk body in a direction toward the head end section, a distal end of the protrusion being provided with a plurality of first electrical terminals, a proximal end of the signal wire being electrically connected to the first electrical terminals.

11. An endoscope, comprising:

the endoscope mounting assembly and the viewing tube of any one of claims 1-10;

the endoscope mounting assembly includes:

a handle assembly;

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

12. The endoscope of claim 11, wherein the viewing cannula is formed with a viewing insertion port at a proximal end of the handle assembly, the viewing tube being detachably insertable into engagement with the viewing channel through the viewing insertion port.

13. The endoscope of claim 12, wherein the viewing cannula comprises a first viewing cannula and a second viewing cannula connected to each other in a length direction, a proximal end of the viewing cannula forming the viewing insertion port at a proximal end of the handle assembly, the first viewing cannula having a first viewing channel into which the proximal end of the second viewing cannula extends and is secured, and the other end penetrating into the insertion tube, the first viewing channel having a cross-section that tapers in a proximal to distal direction.

14. The endoscope of claim 12, wherein the viewing cannula has a plurality of second electrical terminals, the viewing tube includes a tray portion including a tray body and a protruding portion protruding from the tray body toward the viewing cannula, the protruding portion integrating a plurality of first electrical terminals toward a side of the viewing cannula, the first electrical terminals being detachably conductively connected to the second electrical terminals, the endoscope mounting assembly including a data exchange interface for interacting with an external device, the data exchange interface being in electrical communication with the second electrical terminals.

15. The endoscope of claim 14, wherein the proximal end of the viewing cannula extends out of the proximal end of the handle assembly, the proximal end of the viewing cannula has a recess and a viewing insertion opening, the proximal end of the viewing cannula is recessed toward a direction toward the insertion tube to form a recess, the second electrical terminal is disposed at a distal end of the recess and penetrates a wall of the recess in the insertion direction of the viewing tube, one end of the second electrical terminal is exposed in the recess, the other end extends into a space in the handle assembly, and the protruding portion extends into and is fixed in the recess.

16. The endoscope of claim 11, wherein the endoscope mounting assembly comprises a cable and a light emitter for providing illumination to a field of view of the viewing tube, the light emitter being disposed at a distal end of the insertion tube, one end of the cable being electrically connected to the light emitter, the other end extending to the handle assembly.

17. The endoscope of claim 16, wherein the endoscope mounting assembly includes a data exchange interface for interacting with an external device, the cable being electrically connected to the data exchange interface.