CN116370730B

CN116370730B - Drainage device, endoscope, and cleaning method for endoscope

Info

Publication number: CN116370730B
Application number: CN202310662541.XA
Authority: CN
Inventors: 沈和良; 唐良福; 陶君波; 刘孟华; 张剑
Original assignee: Hangzhou Lainset Medical Technology Co ltd
Current assignee: Hangzhou Lainset Medical Technology Co ltd
Priority date: 2023-06-06
Filing date: 2023-06-06
Publication date: 2023-08-22
Anticipated expiration: 2043-06-06
Also published as: CN116370730A

Abstract

The application provides a drainage piece, an endoscope and a cleaning method for the endoscope, which can solve the problems of complex cleaning structure and large size of an insertion part in the prior art. A drainage member for mounting at a distal end of an insertion portion, comprising: a drain body for connection with the insertion portion, the drain body having a tube inlet for communication with the fluid passage of the insertion portion and a tube outlet in communication with the tube inlet; and a drainage cavity connected with the distal end of the drainage tube, the tube outlet of the drainage tube being located partially within the drainage cavity to form a first sub-outlet located outside the drainage cavity and a second sub-outlet located within the drainage cavity; the drainage cavity has a lateral outlet for facing the surface to be cleaned and a drainage top wall adjacent to the lateral outlet; the drainage top wall is a plane extending towards the lateral outlet for guiding the fluid flowing out through the second sub-outlet towards the surface to be cleaned.

Description

Drainage device, endoscope, and cleaning method for endoscope

Technical Field

The application relates to the technical field of endoscopes, in particular to a drainage piece, an endoscope and a cleaning method for the endoscope.

Background

In recent years, with the development of the minimally invasive endoscopic diagnosis and treatment technology, many diseases can enter the human body through natural tunnels of the human body or incisions formed by operations, and minimally invasive diagnosis and treatment can be performed. Currently, the use of endoscopes is gradually accepted by the market, such as a disposable visual nasogastric nutrition tube, which is guided by the endoscope to be placed under the nasogastric tube, so that the accuracy of the insertion position of the nasogastric tube is greatly improved, the insertion time is shortened, and the pain of a patient caused by an insertion tube is relieved; lesions and stones in biliary tract can be observed through a camera of the endoscope in the endoscopic retrograde cholangiography, so that the accuracy of biliary tract disease treatment is greatly improved, and the incidence rate of complications is reduced.

During actual use, the endoscope generally needs to be flushed, for example, of tissue on the gastrointestinal wall waiting for the observation area, and the lens needs to be flushed, in order to be able to observe clearly. Currently, the existing technical solutions generally require two water spraying channels to be designed, wherein the outlet of one water spraying channel faces to the far end to directly flush the region to be observed, and the outlet of the other water spraying channel faces to the lens to flush the lens. However, this solution is not only complicated in structure and high in cost, but also has to provide two fluid channels on the insertion portion of the endoscope to correspond to the two water spraying channels respectively, which results in an increase in the size of the insertion portion, failing to meet the use requirement of the endoscope.

Disclosure of Invention

The application aims to provide a drainage piece, an endoscope and a cleaning method for the endoscope, which can solve the problems of complex cleaning structure and large size of an insertion part in the prior art.

To solve the above-mentioned technical problem, embodiments of the present application disclose a drainage member for being mounted at a distal end of an insertion portion, comprising:

a drain body for connection with the insertion portion, the drain body having a tube inlet for communication with the fluid passage of the insertion portion and a tube outlet in communication with the tube inlet; and

the drainage cavity is connected with the distal end of the drainage tube body, and the tube outlet of the drainage tube body is partially positioned in the drainage cavity so as to form a first sub-outlet positioned outside the drainage cavity and a second sub-outlet positioned in the drainage cavity; the drainage cavity has a lateral outlet for facing the surface to be cleaned and a drainage top wall adjacent to the lateral outlet; the drainage top wall is a plane extending towards the lateral outlet for guiding the fluid flowing out through the second sub-outlet towards the surface to be cleaned.

With the above technical solution, when the fluid conveyed through the fluid passage of the insertion portion enters the drain tube body from the tube inlet, the fluid flowing out through the second sub-outlet can flow toward the surface to be cleaned under the guidance of the drain top wall to clean the surface to be cleaned; at the same time, the fluid flowing out through the first sub-outlet can flow toward the region to be observed to wash the region to be observed. In other words, the drainage piece can clean the surface to be cleaned and the region to be observed only through one pipe outlet, namely, the surface to be cleaned and the region to be observed are simultaneously washed, so that the drainage piece is beneficial to simplifying the structure process, reducing the cost and reducing the size.

According to one embodiment of the application, the drainage top wall is parallel to the surface to be cleaned; alternatively, the drainage top wall extends obliquely to be close to the surface to be cleaned.

By adopting the technical scheme, the influence of direct-current fluid on side-flushing fluid is reduced, and the fluid flowing out from the second sub-outlet flows towards the surface to be cleaned when flowing out from the side-outlet under the guidance of the drainage top wall, so that the surface to be cleaned is better flushed.

According to one embodiment of the application, the drainage cavity further has a drainage side wall adjacent the drainage tube body and a transition wall extending curvedly from the drainage side wall to the drainage top wall.

By adopting the technical scheme, the fluid flowing out from the second sub-outlet is better guided to turn, and the hydraulic loss is reduced.

According to one embodiment of the application, the drain further comprises a mounting portion connected to the drain body to provide a surface to be cleaned through a distal end face of the mounting portion.

According to one embodiment of the application, the mounting portion is made of a non-hydrophobic material; the distal end face of the mounting portion has a window that has been rendered hydrophobic.

By adopting the technical scheme, the adhesive force is provided for the fluid flowing to the surface to be cleaned, so that the fluid can be gathered on the surface to be cleaned. Thus, under the action of the surface tension of the fluid: when the flow rate of the fluid conveyed through the fluid channel is smaller, the fluid flowing out through the first sub-outlet and the second sub-outlet cannot flush out the fluid converged on the surface to be cleaned so as to be attached to the surface to be cleaned for aggregation, and after the fluid is aggregated to a certain degree, part of the converged fluid overflows from the surface to be cleaned to clean the surface to be cleaned; when the flow rate of the fluid conveyed through the fluid channel is high, part of the fluid flowing out through the first sub-outlet can wash out the fluid converged on the surface to be cleaned to flow to the region to be observed, and after the fluid converged on the surface to be cleaned reaches a certain degree, part of the fluid flowing out through the first sub-outlet can carry part of the converging fluid to be separated from the surface to be cleaned to be flushed to the region to be observed when the converging fluid is washed out, so that the surface to be cleaned and the region to be observed are cleaned simultaneously. In addition, the window of the mounting part is subjected to hydrophobic treatment so as to prevent fluid from adhering to the window to influence light transmission while cleaning the lens.

According to one embodiment of the application, the non-hydrophobic material comprises one or more of polycarbonate, acrylonitrile butadiene styrene, polyphenylene sulfide, polypropylene, high density polyethylene, and polyethylene terephthalate.

According to one embodiment of the application, the outer diameter of the drainage member is less than or equal to fifteen millimeters.

According to one embodiment of the application, the first sub-outlet is located between the second sub-outlet and the surface to be cleaned.

According to one embodiment of the application, the drainage member further comprises a shunt portion connected to the drainage cavity.

By adopting the technical scheme, the influence between the fluid for flushing the surface to be cleaned and the fluid for flushing the region to be observed is reduced, so that the effects of flushing the region to be observed and flushing the surface to be cleaned are realized.

According to one embodiment of the application, the flow dividing portion comprises a first flow dividing plate located within the drainage cavity, the first flow dividing plate extending from the drainage top wall towards the tube outlet of the drainage tube body to separate the areas corresponding to the first sub-outlet and the second sub-outlet.

By adopting the technical scheme, the fluid flowing out through the second sub-outlet and the fluid flowing out through the first sub-outlet are separated from each other, so that the interaction between the two is reduced.

According to one embodiment of the application, the diverter further comprises a pair of first diverter arms adjacent the surface to be cleaned, the two first diverter arms extending asymptotically from the left and right ends of the first diverter plate, respectively.

According to one embodiment of the application, the dividing portion comprises a pair of first guide arms adjacent to the surface to be cleaned, the two first guide arms extending asymptotically from both ends of the dividing line between the first sub-outlet and the second sub-outlet, respectively.

By adopting the technical scheme, the two first diversion arms can hold the first sub-outlet so as to guide the fluid flowing out through the second sub-outlet to relatively uniformly opposite the light window after forming two branches, so that opposite flushing of the two branches is slowed down, and the problem of uneven water flow distribution at the light window is solved.

According to one embodiment of the application, the two first deflector arms are integrally connected to form an arc-shaped arm surrounding the first sub-outlet.

By adopting the technical scheme, the fluid flowing out of the lateral opening of the diversion cavity can flow along the preset direction, so that the fluid flowing out of the first sub-outlet can be sprayed out towards the to-be-observed area, the fluid flowing out of the second sub-outlet can be sprayed out towards the to-be-cleaned surface, and the mutual influence between the two is avoided.

According to one embodiment of the application, the flow dividing portion further comprises a second flow dividing plate located within the flow directing chamber, the second flow dividing plate having a pair of flow dividing surfaces extending asymptotically from the flow directing top wall towards the second sub-outlet to divide the flushing area communicating with the second sub-outlet into a pair of flushing sub-areas located on the left and right sides of the first sub-outlet.

By adopting the technical scheme, the fluid flowing out from the second sub-outlet is better divided into two sub-streams so as to control the flow rate of the two sub-streams.

According to one embodiment of the application, the diverter further comprises a pair of second diverter arms remote from the surface to be cleaned, the two second diverter arms extending progressively away from the two ends of the dividing line between the first sub-outlet and the second sub-outlet, respectively.

By adopting the technical scheme, the two second diversion arms can hold the second sub-outlets so as to guide the fluid flowing out through the second sub-outlets to turn at a large angle in the drainage cavity respectively, so that the fluid flowing out through the first sub-outlets is bypassed to offset the light window, and the flushing effect is improved.

According to one embodiment of the application, the drainage member further comprises a guiding arm body integrally extending from the proximal end of the drainage tube body for guiding the two ends of the communicating tube to be respectively inserted into the fluid channel and the drainage tube body.

By adopting the technical scheme, the installation position of the drainage piece on the insertion part is convenient to be determined, so that the drainage piece is stably installed at the distal end of the insertion part.

According to another aspect of the present application, there is further provided an endoscope including:

an operation unit;

an insertion portion, a proximal end of which is connected to the operation portion; and

the drainage member of any of the above, wherein the drainage member is mounted to the distal end of the insertion portion.

By adopting the technical scheme, the drainage piece can clean the surface to be cleaned and the area to be observed by utilizing the fluid conveyed through one fluid channel of the insertion part, thereby being beneficial to simplifying the structure process, reducing the cost and reducing the size.

According to another aspect of the present application, there is further provided a cleaning method for endoscopic use, comprising the steps of:

installing a drainage piece at the distal end of the insertion part;

delivering fluid to a drain body in the drain via a fluid passage of the insert to flow out of a tube outlet of the drain body; and

the fluid flowing out through the second sub-outlet of the tube outlet is diverted to flow towards the surface to be cleaned by the drainage cavity in the drainage member while the fluid flowing out through the first sub-outlet of the tube outlet flows towards the area to be observed.

According to one embodiment of the present application, the endoscopic cleaning method further comprises the steps of:

reducing the fluid flow rate delivered via the fluid channel such that all fluid flowing out via the tube outlet converges at the surface to be cleaned to overflow the surface to be cleaned; or (b)

The fluid flow rate delivered via the fluid channel is increased such that while a portion of the fluid flowing out via the tube outlet is converging at the surface to be cleaned, another portion of the fluid flowing out via the tube outlet carries the converging fluid at the surface to be cleaned towards the region to be observed.

by the flow dividing portion of the flow guiding element, the fluid flowing out through the first sub-outlet and the fluid flowing out through the second sub-outlet are divided such that the fluid flowing out through the first sub-outlet flows to the area to be observed and the fluid flowing out through the second sub-outlet flows to the surface to be cleaned.

the surface to be cleaned is prepared from a non-hydrophobic material.

According to one embodiment of the application, the surface to be cleaned has a window that has been hydrophobically treated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following descriptions are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic perspective view of an endoscope provided in one embodiment of the present application;

FIG. 2 shows a schematic cross-sectional view of an endoscope according to the above-described embodiment of the present application;

FIG. 3 shows a schematic perspective view of a drainage member in an endoscope according to the above-described embodiment of the present application;

fig. 4 shows an exploded schematic view of a drainage member according to the above embodiment of the present application;

FIG. 5 shows a first example of a drainage member according to the above-described embodiment of the present application;

fig. 6 shows a schematic front view of a drainage member according to the first example of the application;

fig. 7 shows a schematic cross-sectional view of a drainage member according to the first example of the application described above;

FIG. 8 is a schematic view showing a state of the drainage member according to the above first example of the present application when the fluid flow rate is small;

FIG. 9 is a schematic view showing a state of the drainage member according to the first example of the present application when the fluid flow rate is large;

FIG. 10 shows a second example of a drainage member according to the above-described embodiment of the present application;

FIG. 11 shows a schematic partial cross-sectional view of a drainage member according to the second example of the application described above;

FIG. 12 shows a third example of a drainage member according to the above-described embodiment of the present application;

fig. 13 shows a schematic cross-sectional view of a drainage member according to the above-described third example of the application;

fig. 14 shows a schematic longitudinal sectional view of a drainage member according to the above-described third example of the application;

fig. 15 is a schematic view showing a state of the drainage member according to the above third example of the present application;

FIG. 16 shows a fourth example of a drainage member according to the above-described embodiment of the present application;

FIG. 17 shows a fifth example of a drainage member according to the above-described embodiment of the present application;

FIG. 18 shows a sixth example of a drainage member according to the above-described embodiment of the present application;

fig. 19 shows a schematic cross-sectional view of a drainage member according to the above-described sixth example of the application;

FIG. 20 shows a schematic partial cross-sectional view of a drainage member according to the sixth example of the present application;

FIG. 21 shows a seventh example of a drainage member according to the above-described embodiment of the present application;

FIG. 22 shows an eighth example of a drainage member according to the above-described embodiment of the present application;

fig. 23 shows a schematic cross-sectional view of a drainage member according to the eighth example of the present application;

fig. 24 shows a schematic state of the drainage member according to the eighth example of the present application.

Reference numerals: 1. a drainage member; 10. a drainage tube body; 101. a tube inlet; 102. a tube outlet; 1021. a first sub-outlet; 1022. a second sub-outlet; 20. a drainage cavity; 201. a lateral outlet; 202. drainage of the top wall; 203. a drainage sidewall; 204. a transition wall; 30. a mounting part; 301. a window; 302. a mounting cavity; 40. a guide arm body; 401. an outer arc surface; 402. an inner arc surface; 50. a lens; 60. a sleeve; 70. a communicating pipe; 80. a support base; 90. a split flow section; 91. a first splitter plate; 92. a second flow dividing plate; 920. a split surface; 93. a first deflector arm; 94. the second diversion arm; 2. an insertion section; 200. a fluid channel; 3. an operation unit; w, the surface to be cleaned.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the embodiments of the present application, the terms "near" and "far" are relative positional relationships, and when an operator operates an apparatus to treat a target object, the side of the apparatus near the operator is "near" and the side near the target object is "far" along the apparatus.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and the like are used in the description of the present application for the purpose of illustration only and do not represent the only embodiment.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" on a second feature may be that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through intermedial media. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.

Unless defined otherwise, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used in the description of the present application includes any and all combinations of one or more of the associated listed items.

Considering that the prior art scheme is not only complex in structure and high in cost, but also has to set two fluid channels on the insertion part of the endoscope to respectively correspond to two water spraying channels, so that the size of the insertion part is increased, and the use requirement of the endoscope cannot be met. In order to solve the problem, the application provides a drainage piece, an endoscope and a cleaning method for the endoscope, which can solve the problems of complex cleaning structure and large size of an insertion part in the prior art.

Referring specifically to fig. 1 to 4, one embodiment of the present application provides an endoscope, which may include an insertion portion 2, an operation portion 3 connected to a proximal end of the insertion portion 2, and a drainage member 1 mounted at a distal end of the insertion portion 2. In this way, the drainage 1 of the present application is able to clean the surface W to be cleaned and the region to be observed with the fluid delivered via the fluid channel 200 of the insertion portion 2. It will be appreciated that references to the proximal and distal ends of the insertion portion 2 in the present application refer to the ends that are proximal and distal to the operative portion 3, respectively.

More specifically, as shown in fig. 2 to 7, the drainage member 1 of the present application may include a drainage tube body 10 for connection with the insertion portion 2 and a drainage lumen 20 connected with the distal end of the drainage tube body 10. The drain body 10 has a tube inlet 101 for communicating with the fluid passage 200 of the insertion portion 2 and a tube outlet 102 communicating with the tube inlet 101. The tube outlet 102 of the drain tube body 10 is located partially within the drain cavity 20 to form a first sub-outlet 1021 located outside the drain cavity 20 and a second sub-outlet 1022 located within the drain cavity 20. The drainage cavity 20 has a lateral outlet 201 for facing the surface W to be cleaned and a drainage top wall 202 adjacent to the lateral outlet 201; the drainage top wall 202 is a plane extending towards the lateral outlet 201 for guiding the fluid flowing out through the second sub-outlet 1022 towards the surface W to be cleaned.

Notably, when the fluid conveyed via the fluid passage 200 of the insertion portion 2 enters the drain tube body 10 from the tube inlet 101, the fluid flowing out via the second sub-outlet 1022 can flow toward the surface W to be cleaned under the guidance of the drain top wall 202 to clean the surface W to be cleaned; at the same time, the fluid flowing out through the first sub-outlet 1021 can flow toward the region to be observed to wash the region to be observed. In other words, the drainage member 1 of the present application can achieve both the cleaning of the surface W to be cleaned and the area to be observed through only one pipe outlet 102, that is, achieve both the surface to be cleaned and the area to be observed cleaning functions, which is helpful for simplifying the structural process, reducing the cost and reducing the size. It is to be understood that the surface W to be cleaned according to the present application may be a distal end surface of the insertion portion 2 or a distal end surface of a mounting portion for mounting a lens or a light source; the region to be observed referred to in the present application refers to a tissue such as a gastrointestinal wall.

Illustratively, in a first example of the application, as shown in fig. 7-9, the drainage top wall 202 of the drainage cavity 20 may be parallel to the surface W to be cleaned. Of course, in other examples of the application, the drainage top wall 202 of the drainage cavity 20 may also extend obliquely to be close to the surface W to be cleaned, so as to reduce the influence of the direct fluid on the side-flushing fluid, and ensure that the fluid flowing out through the second sub-outlet 1022 flows towards the surface W to be cleaned when flowing out from the side outlet 201 under the guidance of the drainage top wall 202.

Optionally, as shown in fig. 7, the drainage cavity 20 further has a drainage sidewall 203 adjacent the drainage body 10 and a transition wall 204 extending curvedly from the drainage sidewall 203 to the drainage top wall 202 to better direct the diversion of fluid exiting via the second sub-outlet 1022.

It is noted that the surface W to be cleaned according to the present application may be made of a non-hydrophobic material, so as to provide adhesion to the fluid flowing towards the surface W to be cleaned, so that the fluid can be collected on the surface W to be cleaned. Thus, under the action of the surface tension of the fluid: as shown in fig. 8, when the flow rate of the fluid delivered through the fluid passage 200 is small, the fluid flowing out through the first sub-outlet 1021 and through the second sub-outlet 1022 cannot wash out the fluid collected on the surface W to be cleaned to adhere to the surface W to be cleaned for collection, and after collection to a certain extent, a portion of the collected fluid overflows from the surface W to be cleaned to achieve cleaning of the surface W to be cleaned; as shown in fig. 9, when the flow rate of the fluid conveyed through the fluid passage 200 is high, a part of the fluid flowing out through the first sub-outlet 1021 can wash out the fluid collected on the surface W to be cleaned to flow to the region to be observed, and after the fluid collected on the surface W to be cleaned reaches a certain degree, a part of the fluid flowing out through the first sub-outlet 1021 can carry a part of the collected fluid to be separated from the surface W to be cleaned to be washed toward the region to be observed when the collected fluid is washed out, so that the surface W to be cleaned and the region to be observed are simultaneously cleaned. It will be appreciated that the fluids referred to in this application are generally implemented as physiological saline.

According to the above-described embodiment of the present application, as shown in fig. 2, 3 and 4, the drainage member 1 may further include a mounting portion 30, the mounting portion 30 being connected to the drainage tube body 10 to provide the surface W to be cleaned through a distal end face of the mounting portion 30. In this way, the drainage member 1 can be simultaneously coupled to the insertion portion 2 by the drainage tube body 10 and the mounting portion 30 being engaged with each other, so that the drainage member 1 is reliably mounted to the distal end of the insertion portion 2.

Alternatively, as shown in fig. 2 to 4, the mounting part 30 of the present application may be used to mount the lens 50 and/or the light source (not shown in the drawings), and the distal end surface of the mounting part 30 may have a window 301 corresponding to the lens 50 and/or the light source so that the lens 50 and/or the light source can receive or reflect light through the window 301.

Alternatively, the mounting portion 30 is made of a non-hydrophobic material to ensure that the surface W to be cleaned is a non-hydrophobic surface in order to collect the fluid.

Alternatively, as shown in fig. 2 and 5, the distal end surface of the mounting portion 30 has a window 301 subjected to a hydrophobic treatment; that is, the window 301 of the mounting portion 30 is subjected to a hydrophobic treatment to prevent the fluid from adhering to the window 301 to affect the light transmission while the lens is washed.

Alternatively, the non-hydrophobic materials mentioned in the present application may include, but are not limited to, one or more of polycarbonate PC, acrylonitrile butadiene styrene ABS, polyphenylene sulfide PPS, polypropylene PP, high density polyethylene HDPE, and polyethylene terephthalate PET.

Alternatively, as shown in fig. 2 and 7, the mount 30 may further have a mount cavity 302 for mounting the lens 50, and the window 301 is located at a distal end of the mount cavity 302 so that the target light can be received for imaging by the lens 50 mounted to the mount cavity 302 through the window 301.

It should be noted that the drainage cavity 20 and the mounting portion 30 may be integrally connected to the drainage tube body 10, so that the drainage member 1 has an integrally formed structure. In this way, the drainage member 1 of the present application realizes an integrated design of the lens holder (i.e. the mounting portion 30) and the flushing structure (i.e. the drainage tube body 10 and the drainage cavity 20), so that the lateral outlet 201 of the drainage cavity 20 can always face the viewing window 301 of the mounting portion 30, and thus the flushing of the viewing window 301 can be directed by means of the fluid delivered through the fluid channel 200 of the insertion portion 2 by only mounting the drainage member 1 to the distal end of the insertion portion 2.

In addition, as shown in fig. 2 to 4, the drainage member 1 may further include a lens 50, a sleeve 60, and a communication tube 70; the distal end of the sleeve 60 is sleeved on the proximal ends of the drainage tube body 10 and the mounting part 30, and the proximal end of the sleeve 60 is used for sleeving the distal end of the insertion part 2 so as to mount the drainage piece 1 on the distal end of the insertion part 2; the distal end of the communicating tube 70 is communicated with the tube inlet 101 of the drainage tube body 10, and the proximal end of the communicating tube 70 is used for being communicated with the fluid passage 200 of the insertion part 2 so as to communicate the drainage tube body 10 with the fluid passage 200 of the insertion part 2; the lens 50 is mounted on the mounting portion 30.

Alternatively, as shown in fig. 4 and 5, the drainage member 1 may further include a guide arm body 40, the guide arm body 40 integrally extending from the proximal end of the drainage tube body 10 for guiding the fluid passage 200 of the insertion portion 2 to which the proximal end of the communication tube 70 is inserted. In other words, the guide arm body 40 integrally extends from the proximal end of the drainage tube body 10 for guiding insertion of both ends of the communication tube 70 to the fluid passage 200 and the tube inlet 101, respectively. At the same time, the guiding arm 40 also helps to determine the mounting position of the drainage tube body 10 on the insertion part 2, so that the drainage member 1 is stably mounted on the distal end of the insertion part 2 in cooperation with the cannula 60.

According to the above-described embodiment of the present application, as shown in fig. 2 to 4, the distal end of the sleeve 60 may be interference fit over the drain tube body 10 and the mounting portion 30, and the proximal end of the sleeve 60 may be interference fit over the outer circumferential wall of the insertion portion 2; the guide arm body 40 is located between the outer wall of the communication tube 70 and the inner wall of the sleeve 60 to guide the distal and proximal ends of the communication tube 70 to be inserted into the tube inlet 101 of the drainage tube body 10 and the fluid passage 200 of the insertion part 2, respectively. It will be appreciated that in other examples of the application, the sleeve 60 may also be fixedly attached by adhesive means to mount the drainage member 1 to the distal end of the insertion portion 2. Further, the drainage tube body 10 of the present application is integrally formed with the mounting portion 30 in a cylindrical structure for reliable interference fit with the cannula 60.

Alternatively, the outer diameter of the drainage member 1 may be equal to or less than fifteen millimeters, so that the insertion size of the endoscope is reduced, and the use requirement of the endoscope is satisfied.

Alternatively, as shown in fig. 2 and 5, the guide arm body 40 has an outer arc surface 401 and an inner arc surface 402 that are oppositely disposed; the outer arcuate surface 401 mates with the inner wall of the sleeve 60 to abut the inner wall of the sleeve 60; the inner arc surface 402 is matched with the outer wall of the communication pipe 70 to closely contact the outer wall of the communication pipe 70 protruding from the fluid passage 200, so that the installation position of the drainage 1 on the insertion portion 2 can be determined. Meanwhile, the guiding arm body 40, the sleeve 60 and the communicating tube 70 are mutually matched, so that the drainage member 1 cannot rotate relative to the sleeve 60 in the use process, the lens 50 is prevented from changing relative to the inserting portion 2, an operator can accurately judge the direction based on an endoscopic image, and the operation is convenient.

Alternatively, as shown in fig. 2 and 4, the drainage member 1 may further include a support base 80, the support base 80 being disposed inside the sleeve 60 to support the lens 50 such that the lens 50 is stably held in the mounting cavity 302 of the mounting portion 30.

Alternatively, as shown in fig. 4, the support base 80 has a notch matched with the communication pipe 70 to form a through hole for the communication pipe 70 to pass through in cooperation with the guide arm 40. In this way, the support base 80 can cooperate with the guide arm body 40 to fix the communicating tube 70 so that the end position of the communicating tube 70 can be constant without displacement when the fluid is conveyed. It is to be understood that the support base 80 of the present application may be provided with a photosensitive module (not shown) corresponding to the lens 50, so as to form a lens module for receiving image information in cooperation with the lens 50; in addition, the lens module may be communicatively connected to the display device by way of, but not limited to, wireless communication, so that an operator observes the image information collected via the lens module outside the body.

It should be noted that, as shown in fig. 6 to 9, the first sub-outlet 1021 of the present application is located between the second sub-outlet 1022 and the surface W to be cleaned, i.e., the first sub-outlet 1021 is close to the surface W to be cleaned, and the second sub-outlet 1022 is far away from the surface W to be cleaned, so that the fluid flowing out through the second sub-outlet 1022 is easily mixed or impacted with the fluid flowing out through the first sub-outlet 1021 during the process of turning in the drainage cavity 20 to flow towards the surface to be cleaned. To solve this problem, in other examples of the present application, the drainage member 1 may further include a diverting portion connected to the drainage cavity 20 such that the interaction between the fluid for flushing the surface W to be cleaned and the fluid for flushing the region to be observed is reduced, so as to better achieve the effect of flushing the region to be observed while flushing the lens.

Illustratively, a second example of a drainage member according to the above-described embodiment of the present application is shown in fig. 10 and 11; compared to the above-described first example according to the present application, the drainage member 1 according to the second example of the present application is different in that: the drainage member 1 further comprises a flow dividing portion 90, the flow dividing portion 90 comprising a first flow dividing plate 91 located within the drainage cavity 20, the first flow dividing plate 91 extending from the drainage top wall 202 of the drainage cavity 20 towards the tube outlet 102 of the drainage tube body 10 to separate the areas corresponding to the first sub-outlet 1021 and the second sub-outlet 1022, such that fluid flowing out through the second sub-outlet 1022 is separated from fluid flowing out through the first sub-outlet 1021, reducing interaction therebetween.

In other words, in the above-described second example of the present application, as shown in fig. 10 and 11, the first flow dividing plate 91 may divide the drainage chamber 20 into a straight-flushing area corresponding to the first sub-outlet 1021 and a flushing area corresponding to the second sub-outlet 1022, so that the fluid flowing out through the second sub-outlet 1022 flows through the flushing area to flush the lens while the fluid flowing out through the first sub-outlet 1021 flows through the straight-flushing area to flush the area to be observed.

Fig. 12 to 15 show a third example of the drainage member according to the above-described embodiment of the present application; compared to the above-described second example according to the present application, the drainage member 1 according to the third example of the present application is different in that: the flow dividing portion 90 may further include a second flow dividing plate 92 located within the flow directing chamber 20, the second flow dividing plate 92 having a pair of flow dividing surfaces 920 extending asymptotically from the flow directing top wall 202 of the flow directing chamber 20 toward the second sub-outlet 1022 to divide the flushing area in communication with the second sub-outlet 1022 into a pair of flushing sub-areas located on the left and right sides of the first sub-outlet 1021 such that fluid flowing out through the second sub-outlet 1022 is better divided into two sub-flows so as to control the flow rates of the two sub-flows.

Alternatively, as shown in fig. 13 and 14, the second diverter plate 92 is biased within the drainage cavity 20 such that the flow rates of the side streams from the two flush sub-areas are different from each other.

Fig. 16 shows a fourth example of the drainage member according to the above-described embodiment of the present application; compared to the above-described second example according to the present application, the drainage member 1 according to the fourth example of the present application is different in that: the diverting portion 90 further includes a pair of first diverting arms 93 adjacent to the surface W to be cleaned, and the two first diverting arms 93 extend asymptotically from the left and right ends of the first diverting plate 91, respectively. In this way, the two first guiding arms 93 can hold the first sub-outlet 1021 so as to guide the fluid flowing out through the second sub-outlet 1022 to more uniformly counter-flow the window 301 on the surface W to be cleaned after forming two sub-streams.

Notably, a fifth example of a drainage member according to the above-described embodiment of the present application is shown in fig. 17; compared to the above-described first example according to the present application, the drainage member 1 according to the fifth example of the present application is different in that: the flow guide 1 further comprises a flow dividing portion 90, the flow dividing portion 90 comprising a pair of first flow guiding arms 93 adjacent to the surface W to be cleaned, the two first flow guiding arms 93 extending asymptotically from both ends of the dividing line between the first sub-outlet 1021 and the second sub-outlet 1022, respectively. In this way, the two first guiding arms 93 can hold the first sub-outlet 1021, and still guide the fluid flowing out through the second sub-outlet 1022 to relatively uniformly butt against the window 301 after forming two sub-streams.

It is noted that in the above-described fourth and fifth examples of the present application, as shown in fig. 16 and 17, the two first deflector arms 93 are integrally connected to form an arc-shaped arm surrounding the first sub-outlet 1021. In this way, the fluid flowing out of the drainage cavity 20 can flow along a predetermined direction, so that the fluid flowing out of the first sub-outlet 1021 can be ejected toward the region to be observed, and the fluid flowing out of the second sub-outlet 1022 can be ejected toward the window, thereby avoiding the mutual influence between the two. It is understood that in other examples of the present application, the second splitter plate 92 may exist simultaneously with the first splitter arm 93, which is not described herein.

It is worth mentioning that fig. 18 to 20 show a sixth example of a drainage member according to the above-described embodiment of the present application; compared to the above-described second example according to the present application, the drainage member 1 according to the sixth example of the present application is different in that: the diverting portion 90 further includes a pair of second diverting arms 94 remote from the surface W to be cleaned, the two second diverting arms 94 extending progressively farther from both ends of the dividing line between the first sub-outlet 1021 and the second sub-outlet 1022, respectively. Thus, the two second diversion arms 94 can hold the second sub-outlets 1022 so as to guide the fluid flowing out from the second sub-outlets 1022 to turn at a large angle in the drainage cavity 20 respectively, so that the fluid flowing out from the first sub-outlets 1021 is bypassed to counter-flush the window, and the flushing effect is improved.

In other words, in the above-described sixth example of the present application, as shown in fig. 19 and 20, the diverting portion 90 of the flow guide 1 includes both the first diverting plate 91 and the pair of second diverting arms 94; the first splitter plate 91 makes the direct flushing area corresponding to the first sub-outlet 1021 and the flushing area corresponding to the second sub-outlet 1022 not mutually affect, and the two second diversion arms 94 can hold the second sub-outlet 1022 so as to guide the fluid flowing out from the second sub-outlet 1022 to respectively and widely turn in the drainage cavity 20, so that the fluid flowing out from the first sub-outlet 1021 bypasses the flushing window, and the flushing effect is improved.

It should be noted that, in the seventh example of the present application, as shown in fig. 21, the drainage member 1 of the present application may further include a pair of second guiding arms 94 apart from the surface W to be cleaned on the basis of the fifth example, and the two second guiding arms 94 extend gradually from both ends of the boundary between the first sub-outlet 1021 and the second sub-outlet 1022, respectively. Thus, on the one hand, the two second diversion arms 94 can hold the second sub-outlets 1022 so as to guide the fluid flowing out from the second sub-outlets 1022 to turn at a large angle in the diversion cavity 20 respectively, so that the fluid flowing out from the first sub-outlets 1021 is bypassed to offset the window, and the flushing effect is improved; on the other hand, the two second diversion arms 94 enable the fluid flowing out through the first sub-outlet 1021 to be ejected toward the region to be observed, so that the fluid flowing out through the second sub-outlet 1022 can be ejected toward the window to avoid interaction therebetween; meanwhile, the two first guide arms 93 can slow down the opposite impact of the two branches, so that the water flow flowing to the window 301 can be distributed more uniformly, and the flushing effect is improved.

Further, fig. 22, 23 and 24 show an eighth example of the drainage member according to the above-described embodiment of the present application; compared to the above-described first example according to the present application, the drainage member 1 according to the thirteenth example of the present application is different in that: the diversion section 90 of the diversion member 1 includes the first diversion plate 91, the second diversion plate 92, the first diversion arm 93 and the second diversion arm 94 at the same time, so as to minimize the interaction between the liquid flowing out through the second sub-outlet 1022 and the liquid flowing out through the first sub-outlet 1021. It is to be understood that, in other examples of the present application, the flow dividing portion 90 may include one or more of the first flow dividing plate 91, the second flow dividing plate 92, the first flow guiding arm 93 and the second flow guiding arm 94, so long as a corresponding flow dividing effect can be achieved, which will not be described in detail herein.

It should be noted that, according to another aspect of the present application, an embodiment of the present application further provides a cleaning method for endoscopic use, which may include the steps of:

installing a drainage piece at the distal end of the insertion part;

It is noted that in one example of the present application, the endoscopic cleaning method of the present application may further comprise the steps of:

It will be appreciated that when increasing the fluid flow rate, reference to another portion of the fluid exiting via the tube outlet of the present application generally refers to a majority of the fluid exiting via the first sub-outlet, and this is not repeated herein.

In another example of the present application, the endoscopic cleaning method of the present application may further comprise the steps of:

According to the above embodiment of the present application, the cleaning method for endoscopic use may further comprise the steps of: the surface to be cleaned is prepared from a non-hydrophobic material.

It is noted that the surface to be cleaned according to the present application may have a window that has been subjected to a hydrophobic treatment.

The technical features of the above embodiments may be combined without changing the basic principle of the present application, and for brevity of description, all possible combinations of the technical features of the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be regarded as the scope of the description.

The foregoing examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be determined from the following claims.

Claims

1. A drainage member for mounting at the distal end of an insertion portion, comprising:

a drain body for connection with the insert, the drain body having a tube inlet for communication with the fluid passage of the insert and a tube outlet in communication with the tube inlet; and

a drainage cavity connected with a distal end of the drainage tube body, the tube outlet of the drainage tube body being located partially within the drainage cavity to form a first sub-outlet located outside the drainage cavity and a second sub-outlet located within the drainage cavity; the drainage cavity has a lateral outlet for facing a surface to be cleaned and a drainage top wall adjacent to the lateral outlet; the drainage top wall is a plane extending towards the lateral outlet and is used for guiding the fluid flowing out from the second sub-outlet to flow towards the surface to be cleaned; the first sub-outlet is located between the second sub-outlet and the surface to be cleaned for flowing fluid exiting via the first sub-outlet towards the area to be observed.

2. The drainage piece according to claim 1, wherein said drainage top wall is parallel to the surface to be cleaned; alternatively, the drainage top wall extends obliquely to be adjacent to the surface to be cleaned; the drainage cavity is further provided with a drainage side wall adjacent to the drainage tube body, a transition wall surface and a guide arm body, wherein the transition wall surface extends from the drainage side wall to the drainage top wall in a bending mode, the guide arm body integrally extends from the proximal end of the drainage tube body and is used for guiding two ends of a communicating pipe to be respectively inserted into the fluid channel and the drainage tube body.

3. The drainage piece according to claim 1, further comprising a mounting portion connected to the drainage tube body to provide the surface to be cleaned through a distal end face of the mounting portion; the mounting part is made of a non-hydrophobic material; the distal end face of the mounting portion has a window subjected to a hydrophobic treatment; the non-hydrophobic material comprises one or more of polycarbonate, acrylonitrile butadiene styrene, polyphenylene sulfide, polypropylene, high density polyethylene, and polyethylene terephthalate.

4. A drainage according to any of claims 1 to 3, wherein the outer diameter of the drainage is equal to or less than fifteen millimeters.

5. The drainage piece of claim 1, further comprising a shunt portion connected to the drainage cavity.

6. The flow diverter of claim 5, wherein the flow diverter portion includes a first flow diverter plate within the flow diverter cavity extending from the flow diverter top wall toward the tube outlet of the flow diverter body to separate the regions corresponding to the first and second sub-outlets.

7. The flow guide according to claim 5 or claim 6, wherein the flow dividing portion includes a pair of first flow guide arms adjacent to the surface to be cleaned, both of the first flow guide arms extending asymptotically from both ends of a dividing line between the first sub-outlet and the second sub-outlet, respectively; the two first deflector arms are integrally connected to form an arc-shaped arm surrounding the first sub-outlet.

8. The flow diverter of claim 7, wherein the flow diverter further comprises a second flow diverter plate within the flow diverter cavity, the second flow diverter plate having a pair of flow diverter surfaces extending asymptotically from the flow diverter top wall toward the second sub-outlet to divide a flush area in communication with the second sub-outlet into a pair of flush sub-areas on either side of the first sub-outlet; the flow dividing part further comprises a pair of second flow guiding arms far away from the surface to be cleaned, and the two second flow guiding arms extend gradually from two ends of a dividing line between the first sub-outlet and the second sub-outlet respectively.

9. An endoscope, comprising:

an operation unit;

The drainage member of any one of claims 1 to 8, mounted to a distal end of the insertion portion.

10. The cleaning method for the endoscope is characterized by comprising the following steps:

installing the drainage member of any one of claims 1 to 8 at the distal end of the insertion portion;

the fluid flowing out through the second sub-outlet of the tube outlet is directed to be diverted to flow towards the surface to be cleaned by the drainage cavity in the drainage while the fluid flowing out through the first sub-outlet of the tube outlet flows towards the area to be observed.

11. The method for cleaning an endoscope according to claim 10, further comprising the step of:

reducing the fluid flow rate delivered through the fluid channel such that all fluid exiting through the tube outlet converges at the surface to be cleaned to overflow the surface to be cleaned; or (b)

Increasing the fluid flow rate delivered via the fluid channel such that while a portion of the fluid flowing out via the tube outlet is converging on the surface to be cleaned, another portion of the fluid flowing out via the tube outlet carries the converging fluid on the surface to be cleaned towards the region to be observed;

Preparing the surface to be cleaned from a non-hydrophobic material; the surface to be cleaned has a window that has been subjected to a hydrophobic treatment.

12. The method for cleaning an endoscope according to claim 10, further comprising the step of:

the fluid flowing out through the first sub-outlet and the fluid flowing out through the second sub-outlet are split by the split portion of the drainage member so that the fluid flowing out through the first sub-outlet flows to the area to be observed and the fluid flowing out through the second sub-outlet flows to the surface to be cleaned.