CN116370729B

CN116370729B - Drainage device, cleaning head for endoscope, and endoscope

Info

Publication number: CN116370729B
Application number: CN202310662505.3A
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: CN116370729A

Abstract

The application provides a drainage piece, a cleaning head for endoscope and an endoscope, which can solve the problems of complex cleaning structure and difficult control in the prior art. The drainage piece includes: a mounting portion for mounting a lens, the mounting portion having a light window for allowing the lens to transmit light; and a drainage part comprising a drainage tube body and a drainage cavity; the drainage tube body extends laterally from the side wall of the mounting portion to form a drainage conduit for communicating with the fluid passage of the insertion portion; the drainage cavity extends from the distal end of the drainage tube body to form a drainage cavity communicated with the drainage pipeline; the drainage cavity is provided with a drainage outlet facing the light window, and the drainage pipeline and the drainage cavity jointly form a drainage channel for guiding fluid from the fluid channel to turn to flow to the light window for lens cleaning.

Description

Drainage device, cleaning head for endoscope, and endoscope

Technical Field

The application relates to the technical field of endoscopes, in particular to a drainage piece, a cleaning head for endoscope and an 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 has been gradually accepted by the market, such as 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 through hole of the cannula to a patient is lightened; 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.

In the actual use process of the endoscope, the far-end lens of the insertion part of the endoscope is easily polluted, so that the image is blurred, and the required observation effect is not achieved. In order to clearly observe the internal state of the human body, the distal lens of the endoscope needs to be cleaned in time. At present, the existing endoscope generally adopts a split type cleaning structure with a lens seat and a cleaning mechanism separated, and has the disadvantages of complex process and high operation difficulty. For example, there is a conventional endoscope cleaning tube including a cleaning tube and a handle connected in a straight line, and an inner passage of the handle is communicated with the cleaning tube having a variable shape so as to convey liquid and/or gas to the cleaning tube extending into a forceps channel hole through the handle to clean a lens. When the cleaning head of the cleaning tube for the endoscope extends out of the forceps channel hole, the cleaning head needs to be ensured to bend towards the direction of the lens so as to clean the lens; therefore, the split type cleaning structure is relatively complex and is not easy to control.

Disclosure of Invention

The invention aims to provide a drainage piece, a cleaning head for endoscope and an endoscope, which can solve the problems that a cleaning structure is complex and difficult to control in the prior art.

In order to solve the above technical problems, an embodiment of the present invention discloses a drainage member, including:

A mounting part for mounting a lens, the mounting part having a light window for allowing the lens to transmit light; and

the drainage part comprises a drainage tube body and a drainage cavity; the drainage tube body extends laterally from the side wall of the mounting portion to form a drainage tube for communicating with the fluid channel of the insertion portion; the drainage cavity extends from the distal end of the drainage tube body to form a drainage cavity communicated with the drainage pipeline; the drainage cavity is provided with a drainage outlet facing the light window, and the drainage pipeline and the drainage cavity jointly form a drainage channel for guiding fluid from the fluid channel to turn to flow to the light window for lens cleaning.

By adopting the technical scheme, the integrated design of the lens seat and the flushing structure is realized, so that the drainage outlet of the drainage part can always face the optical window of the installation part, and the optical window can be directionally flushed by means of fluid conveyed through the fluid channel of the insertion part only by installing the cleaning head for endoscopic use to the far end of the insertion part, and the penetration and bending of the cleaning head do not need to be manually controlled like the prior art, thereby being beneficial to simplifying the cleaning structure and facilitating the control.

According to one embodiment of the application, the tube outlets of the drainage tube are all located within the drainage lumen; the drainage portion further has a direct current channel communicated with the drainage cavity, the direct current channel extends axially to penetrate through the drainage cavity, and the flow area of the direct current channel is smaller than the flow area of the drainage pipeline.

By adopting the technical scheme, one part of the fluid flowing into the drainage cavity through the drainage pipeline flows to the optical window through the drainage outlet to clean the lens, and the other part of the fluid flowing into the drainage cavity through the drainage pipeline flows to the far end through the direct current channel to flush the region to be observed, so that the region to be observed and the lens can be cleaned synchronously.

According to one embodiment of the application, the axial projection of the direct current channel is located within the tube outlet of the drainage tube.

By adopting the technical scheme, a part of fluid flowing into the drainage cavity through the drainage pipeline can directly flow to the direct current channel so as to directly flush the region to be observed after passing through the direct current channel, thereby being beneficial to improving the flushing effect of the region to be observed.

According to one embodiment of the application, the direct current channel is a circular hole arranged coaxially with the drainage tube and the inner diameter of the direct current channel is smaller than the inner diameter of the drainage tube.

By adopting the technical scheme, when the flow area of the direct current channel is smaller than that of the drainage pipeline, a part of fluid flowing out of the drainage pipeline can be ensured to directly flush the region to be observed through the direct current channel, and the flushing effect of the region to be observed is improved.

According to one embodiment of the application, the direct current channel is a semicircular hole coaxially arranged with the drainage pipe, and the inner diameter of the direct current channel is smaller than or equal to the inner diameter of the drainage pipe.

By adopting the technical scheme, the flow area of the direct current channel can be smaller than that of the drainage pipeline, and meanwhile, a part of fluid flowing out through the drainage pipeline can be ensured to directly flush the region to be observed through the direct current channel, so that the flushing effect of the region to be observed can be improved.

According to one embodiment of the application, the tube outlet of the drainage tube has a first sub-outlet close to the optical window and a second sub-outlet remote from the optical window, the first sub-outlet being aligned with the direct current channel.

By adopting the technical scheme, the fluid flowing out through the first sub-outlet flows out through the direct current channel to directly flush the area to be observed; meanwhile, the fluid flowing out through the second sub-outlet can be smoothly drained and diverted by the drainage cavity, so that the kinetic energy loss of the fluid is reduced, and the optical window can be better washed.

According to one embodiment of the application, the tube outlet portion of the drainage tube is located within the drainage lumen.

By adopting the technical scheme, a part of fluid flowing out from the pipe outlet of the drainage pipe flows into the drainage cavity firstly and then flows out from the drainage cavity through the drainage outlet so as to flush the optical window; at the same time, another part of the fluid flowing out through the tube outlet of the drainage tube does not flow into the drainage lumen, but directly flows to the region to be observed to flush the region to be observed.

According to one embodiment of the application, the tube outlet of the drainage tube has a first sub-outlet close to the light window and a second sub-outlet remote from the light window, the first sub-outlet being located outside the drainage cavity and the second sub-outlet being located inside the drainage cavity.

By adopting the technical scheme, the fluid flowing out from the first sub-outlet can directly flow to the region to be observed so as to directly flush the region to be observed; at the same time, the fluid flowing out through the second sub-outlet flows out through the drainage outlet under the drainage effect of the drainage cavity so as to flush the optical window.

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

By adopting the technical scheme, the fluid for flushing the lens and the fluid for flushing the region to be observed are not mutually influenced, so that the effects of flushing the region to be observed and flushing the lens 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 an inner wall of the drainage cavity towards the tube outlet of the drainage tube 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 present application, the diverting portion further includes a pair of first diverting arms adjacent to the optical window, the two diverting arms extending asymptotically from left and right ends of the first diverting plate, respectively.

According to one embodiment of the application, the diverting section comprises a pair of first diverting arms adjacent to the optical window, the two diverting 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 flow guiding 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 optical window, 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 chamber 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 diverting section comprises a pair of second diverting arms remote from the light window, the two second diverting arms extending progressively away 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 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 diversion 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 present application, the drainage part 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.

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 far end of the insertion part by being matched with the sleeve.

According to one embodiment of the application, the guide arm body has oppositely disposed inner and outer arcuate surfaces, the inner arcuate surface being adapted to mate with the outer wall of the communication tube and the outer arcuate surface being adapted to mate with the inner wall of the sleeve.

By adopting the technical scheme, the guiding arm body, the sleeve and the communicating pipe are matched with each other, so that the drainage piece cannot rotate relative to the sleeve in the use process, the lens is prevented from changing relative to the direction of the insertion part, an operator can accurately judge the direction based on an endoscopic image, and the operation is convenient.

According to one embodiment of the application, the drainage cavity has a drainage side wall adjacent the drainage body, a drainage top wall adjacent the drainage outlet, and a transition wall extending curvedly from the drainage side wall to the drainage top wall; the drainage top wall is a plane extending horizontally or obliquely downwards from the transition wall surface towards the light window.

By adopting the technical scheme, the drainage cavity body can better reduce the influence of direct-current fluid on side-current fluid, guide the fluid to flow towards the optical window, so as to better clean the lens.

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

a drainage member of any of the above;

the distal end of the sleeve is sleeved on the drainage piece, and the proximal end of the sleeve is used for sleeving the distal end of the insertion part;

the distal end of the communicating pipe is communicated with the drainage piece, and the proximal end of the communicating pipe is used for communicating the fluid channel of the insertion part; and

And the lens is arranged on the drainage piece.

By adopting the technical scheme, the cleaning head for the endoscope can clean the lens by utilizing the fluid conveyed by the fluid channel of the insertion part, and does not need to manually control the penetration and bending of the cleaning head like the prior art.

According to one embodiment of the application, the endoscopic cleaning head further comprises a support base disposed within the sleeve for supporting the lens.

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 above-mentioned cleaning head for endoscope is connected to the distal end of the insertion portion.

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 is a perspective view showing a cleaning head for endoscope in accordance with the above-described embodiment of the present application;

fig. 4 shows an exploded view of the endoscopic cleaning head according to the above embodiment of the present application;

fig. 5 shows a first example of a drainage member in a cleaning head for endoscopic use 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 shows a second example of a drainage member in a cleaning head for endoscopic use according to the above-described embodiment of the present application;

fig. 9 shows a schematic front view of a drainage member according to the above second example of the application;

FIG. 10 shows a schematic cross-sectional view of a drainage member according to the second example of the present application described above;

fig. 11 shows a third example of a drainage member in a cleaning head for endoscopic use according to the above-described embodiment of the present application;

fig. 12 shows a schematic front view of a drainage member according to the above third example of the 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 fourth example of a drainage member in a cleaning head for endoscopic use according to the above-described embodiment of the present application;

fig. 15 shows a schematic front view of a drainage member according to the fourth example of the present application;

fig. 16 shows a schematic cross-sectional view of a drainage member according to the above-described fourth example of the application;

fig. 17 shows a fifth example of a drainage member in the head for endoscopic use according to the above-described embodiment of the present application;

fig. 18 shows a sixth example of a drainage member in a cleaning head for endoscopic use according to the above-described embodiment of the present application;

FIG. 19 shows a schematic view in partial cross-section of a drainage member according to the sixth example of the application described above;

fig. 20 shows a seventh example of a drainage member in a cleaning head for endoscopic use according to the above-described embodiment of the present application;

fig. 21 shows an eighth example of a drainage member in a cleaning head for endoscopic use according to the above-described embodiment of the present application;

fig. 22 shows a schematic cross-sectional view of a drainage member according to the eighth example of the present application;

fig. 23 shows a schematic longitudinal sectional view of a drainage member according to the above-described eighth example of the application;

fig. 24 is a schematic view showing a state of the drainage member according to the eighth example of the present application;

fig. 25 shows a ninth example of a drainage member in a head for endoscopic use according to the above-described embodiment of the present application;

Fig. 26 shows a tenth example of the drainage member in the head for endoscopic use according to the above embodiment of the present application;

fig. 27 shows an eleventh example of a drainage member in the head for endoscopic use according to the above-described embodiment of the present application;

fig. 28 shows a schematic cross-sectional view of a drainage member according to the above-described eleventh example of the present application;

fig. 29 shows a schematic partial cross-sectional view of a drainage member according to the above-described eleventh example of the present application;

fig. 30 shows a twelfth example of the drainage member in the cleaning head for endoscopic use according to the above embodiment of the present application;

FIG. 31 shows a thirteenth example of a drainage member in a cleaning head for endoscopic use according to the above-described embodiment of the present application;

FIG. 32 shows a schematic partial cross-sectional view of a drainage member according to the thirteenth example of the application;

FIG. 33 shows a schematic cross-sectional view of a drainage member according to the thirteenth example of the present application;

fig. 34 shows a state diagram of the drainage member according to the thirteenth example of the present application.

Reference numerals: 1. a cleaning head for endoscopic use; 10. a drainage member; 11. a mounting part; 111. a mounting cavity; 112. a light window; 12. a drainage part; 1201. a drainage channel; 1202. a drainage inlet; 1203. a drainage outlet; 1204. a direct current channel; 121. a drainage tube body; 1210. a drainage tube; 1211. a tube outlet; 12111. a first sub-outlet; 12112. a second sub-outlet; 122. a drainage cavity; 1220. a drainage cavity; 1221. a drainage sidewall; 1222. drainage of the top wall; 1223. a transition wall; 123. a guide arm body; 1231. an outer arc surface; 1232. an inner arc surface; 13. a split flow section; 131. a first splitter plate; 132. a second flow dividing plate; 1320. a split surface; 133. a first deflector arm; 134. the second diversion arm; 20. a sleeve; 30. a communicating pipe; 40. a lens; 50. a support base; 2. an insertion section; 200. a fluid channel; 3. an operation section.

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 existing split type cleaning structure needs to ensure that the cleaning head bends towards the direction of the lens when extending out of the clamp hole, the lens can be cleaned, and the cleaning head is relatively complex and difficult to control. In order to solve the problem, the application provides a drainage piece, a cleaning head for endoscope and an endoscope, which can solve the problems of complex cleaning structure and difficult control in the prior art.

Referring specifically to fig. 1 to 4, one embodiment of the present application provides an endoscope that may include an insertion portion 2, an operation portion 3 connected to a proximal end of the insertion portion 2, and an endoscopic cleaning head 1 connected to a distal end of the insertion portion 2. The cleaning head 1 for endoscopic use may include a drainage member 10, a sleeve 20, a communication tube 30, and a lens 40; the distal end of the sleeve 20 is sleeved on the proximal end of the drainage member 10, and the proximal end of the sleeve 20 is used for sleeving the distal end of the insertion portion 2 so as to mount the drainage member 10 on the distal end of the insertion portion 2; the distal end of the communicating tube 30 communicates with the drainage member 10, and the proximal end of the communicating tube 30 is used to communicate with the fluid passage 200 of the insertion portion 2, so as to communicate the drainage member 10 with the fluid passage 200 of the insertion portion 2; the lens 40 is mounted to the drainage member 10. In this way, the endoscopic cleaning head 1 of the present application can clean the lens 40 with the fluid delivered through the fluid channel 200 of the insertion portion 2 without the need to manually manipulate the penetration and bending of the cleaning head as in the prior art. 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 and 4, the drainage 10 of the present application may include a mounting portion 11 and a drainage portion 12. The mount 11 is for mounting the lens 40, and the mount 11 has a light window 112 for transmitting light of the lens 40. The drainage portion 12 is connected to the mounting portion 11, and the drainage portion 12 has a drainage channel 1201, a drainage inlet 1202 for communicating with the fluid channel 200, and a drainage outlet 1203 toward the optical window 112; the drainage channel 1201 extends from the drainage inlet 1202 to the drainage outlet 1203 for directing the fluid from the fluid channel 200 to turn to flow towards the optical window 112 for lens cleaning. It will be appreciated that the drainage portion 12 is integrally connected to the mounting portion 11 such that the drainage member 10 has an integrally formed structure.

Optionally, the mounting portion 11 further has a mounting cavity 111 for mounting the lens 40, and the optical window 112 is located at a distal end of the mounting cavity 111 so that the target light can be transmitted through the optical window 112 to be received by the lens 40 mounted to the mounting cavity 111 for imaging.

It should be noted that, the drainage member 10 of the present application realizes the integrated design of the lens holder (i.e. the mounting portion 11) and the flushing structure (i.e. the drainage portion 12), so that the drainage outlet 1203 of the drainage portion 12 can always face the optical window 112 of the mounting portion 11, so that the optical window 112 can be flushed directionally by the fluid conveyed through the fluid channel 200 of the insertion portion 2 only by mounting the cleaning head 1 to the distal end of the insertion portion 2, without manually manipulating the penetration and bending of the cleaning head as in the prior art, which is helpful for simplifying the cleaning structure and facilitating the control.

Illustratively, in a first example of the present application, as shown in fig. 5-7, the drain 12 may include a drain body 121 and a drain cavity 122; the drainage tube body 121 extends laterally from the side wall of the mounting portion 11 to form a drainage tube 1210 for insertion with the distal end of the communication tube 30; a drainage lumen 122 extends from the distal end of the drainage tube body 121 to form a drainage lumen 1220 in communication with a drainage tube 1210. It will be appreciated that the drainage tube 1210 and the drainage lumen 1220 together form a drainage channel 1201, with the inlet of the drainage tube 1210 providing a drainage inlet 1202 and the outlet of the drainage lumen 1220 providing a drainage outlet 1203; in addition, the proximal end of the communication tube 30 of the present application is adapted to be inserted into the fluid passage 200 of the insertion portion 2 to achieve reliable communication of both.

In other words, the drainage lumen 1220 has a drainage outlet 1203 towards the light window 112, the drainage conduit 1210 and the drainage lumen 1220 together forming a drainage channel 1201 for guiding fluid from the fluid channel 200 to be diverted to flow towards the light window 112 for lens cleaning.

Optionally, the drainage portion 12 may further include a guiding arm 123, the guiding arm 123 integrally extending from a proximal end of the drainage tube 121 for guiding the fluid passage 200 of the insertion portion 2 to which the proximal end of the communication tube 30 is inserted. In other words, the guiding arm 123 integrally extends from the proximal end of the drainage tube 121 for guiding the insertion of the two ends of the communicating tube 30 into the fluid channel 200 and the drainage tube 1210, respectively. At the same time, the guide arms 123 also help to determine the mounting position of the drainage member 10 on the insertion portion 2 so as to cooperate with the cannula 20 to stably mount the drainage member 10 on the distal end of the insertion portion 2.

Alternatively, as shown in fig. 7, the tube outlet 1211 of the drainage tube 1210 is positioned entirely within the drainage lumen 1220 such that fluid flowing out through the tube outlet 1211 of the drainage tube 1210 will flow entirely into the drainage lumen 1220 before flowing out of the drainage lumen 1220 through the drainage outlet 1203 to flush the light window 112. It is to be understood that the light window 112 may be a through hole communicating with the mounting cavity 111, or may be a light-transmitting cover made of a light-transmitting material, so long as the light can pass through to be received by the lens 40, which is not described in detail herein.

According to the above-described embodiment of the present application, as shown in fig. 2 to 4, the distal end of the sleeve 20 may be interference fit over the drainage member 10, and the proximal end of the sleeve 20 may be interference fit over the outer circumferential wall of the insertion portion 2; the guide arm 123 of the drainage portion 12 is located between the outer wall of the communication tube 30 and the inner wall of the sleeve 20 to guide the fluid passage 200 of the insertion portion 2 and the drainage tube 1210 of the drainage tube 121, respectively, to which the distal end and the proximal end of the communication tube 30 are inserted, respectively. It will be appreciated that in other examples of the application, the sleeve 20 may also be adhesively fixedly coupled to the drainage member 10 and the insertion portion 2, respectively, to mount the drainage member 10 to the distal end of the insertion portion 2. Further, the drainage tube body 121 of the present application is integrally formed with the mounting portion 11 in a cylindrical structure so as to perform a reliable interference fit with the cannula 20.

Alternatively, as shown in fig. 2 and 5, the guide arm body 123 has an outer arc surface 1231 and an inner arc surface 1232 that are disposed opposite to each other; the outer arcuate surface 1231 mates with the inner wall of the sleeve 20 to abut the inner wall of the sleeve 20; the inner arc surface 1232 is matched with the outer wall of the communication pipe 30 to closely contact the outer wall of the communication pipe 30 protruding from the fluid passage 200, so that the installation position of the flow guide 10 on the insertion portion 2 can be determined. Meanwhile, the guiding arm 123, the sleeve 20 and the communicating tube 30 are mutually matched, so that the drainage member 10 cannot rotate relative to the sleeve 20 in the use process, the lens 40 is prevented from changing relative to the insertion part 2, the direction can be accurately judged based on an endoscopic image by an operator, and the operation is convenient.

It is understood that the radius of curvature of the outer arc surface 1231 of the guide arm 123 of the present application may be equal to the radius of curvature of the inner wall of the sleeve 20, and the radius of curvature of the inner arc surface 1232 of the guide arm 123 may be equal to the radius of curvature of the outer wall of the communicating tube 30. In addition, the outer diameter of the sleeve 20 of the present application is equal to the outer diameter of the drainage tube body 121 in the drainage member 10, so that the cleaning head 1 for endoscopic use fitted over the distal end of the insertion portion 2 has a smooth outer peripheral surface.

Optionally, as shown in fig. 2 and 4, the endoscopic cleaning head 1 may further comprise a support base 50, the support base 50 being disposed within the sleeve 20 to support the lens 40 such that the lens 40 is stably held within the mounting cavity 111 of the drainage member 10.

Alternatively, as shown in fig. 4, the support base 50 has a notch matched with the communication pipe 30 to form a through hole for the communication pipe 30 to pass through in cooperation with the guide arm 123. In this way, the support base 50 can cooperate with the guide arm 123 to fix the communicating tube 30 so that the end position of the communicating tube 30 can be constant without displacement when the fluid is conveyed. It is to be understood that the support base 50 of the present application may be provided with a photosensitive module (not shown) corresponding to the lens 40, so as to form a lens module for receiving image information in cooperation with the lens 40; 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 is noted that in practical use, it is generally necessary to flush the tissue waiting observation area, such as on the gastrointestinal wall, and also to flush the lens, in order to be able to see clearly; however, in the prior art, two drainage chambers are usually required to be designed, wherein the outlet of one drainage chamber faces the far end to directly flush the region to be observed, and the outlet of the other drainage chamber faces the lens to flush the lens, which results in complex structure and higher cost. In other examples of the present application, only one drainage cavity 1220 is needed to be provided on the drainage member 10 to achieve both functions of lens washing and area washing to be observed, which helps to simplify the process and reduce the cost.

Illustratively, a second example of a drainage member according to the above-described embodiment of the present application is shown in fig. 8 to 10; compared to the above-described first example according to the present application, the drainage member 10 according to the second example of the present application is different in that: the drain 12 may further have a direct current channel 1204 in communication with the drain lumen 1220, the direct current channel 1204 extending axially to intersect the drain lumen 122, and the flow area of the direct current channel 1204 being smaller than the flow area of the drain conduit 1210. Thus, a portion of the fluid flowing into the drainage lumen 1220 through the drainage conduit 1210 flows to the optical window 112 through the drainage outlet 1203 for lens cleaning, and another portion of the fluid flowing into the drainage lumen 1220 through the drainage conduit 1210 flows to the distal end through the direct current channel 1204 for flushing the region to be observed, so that the region to be observed and the lens can be cleaned simultaneously. It is understood that the sum of the flow area of the drainage outlet 1203 and the flow area of the direct current channel 1204 is equal to or smaller than the flow area of the drainage pipe 1210, so as to ensure that the cleaning water pressure of the lens area and the area to be observed is sufficient.

Optionally, the axial projection of the direct current channel 1204 is located inside the tube outlet 1211 of the drainage tube 1210, so that a portion of the fluid flowing into the drainage cavity 1220 through the drainage tube 1210 flows directly to the direct current channel 1204, so as to directly flush the region to be observed after passing through the direct current channel 1204, which helps to improve the flushing effect of the region to be observed.

Alternatively, in the second example of the present application, as shown in fig. 8 and 10, the direct current passage 1204 may be implemented as a circular hole arranged coaxially with the drainage pipe 1210, and the inner diameter of the direct current passage 1204 is smaller than the inner diameter of the drainage pipe 1210, so as to ensure that a portion of the fluid flowing out through the drainage pipe 1210 can directly flush the region to be observed through the direct current passage 1204 while ensuring that the flow area of the direct current passage 1204 is smaller than the flow area of the drainage pipe 1210, contributing to improving the flushing effect of the region to be observed.

It is noted that fig. 11 to 13 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 10 according to the third example of the present application is different in that: the direct current channel 1204 may also be implemented as a semicircular hole arranged corresponding to the drainage pipe 1210, and the inner diameter of the direct current channel 1204 is smaller than or equal to the inner diameter of the drainage pipe 1210, so that it is still ensured that a part of fluid flowing out through the drainage pipe 1210 can directly flush the area to be observed through the direct current channel 1204 while ensuring that the flow area of the direct current channel 1204 is smaller than the flow area of the drainage pipe 1210, thereby helping to improve the flushing effect of the area to be observed.

Optionally, the direct current channel 1204 is arranged coaxially with the drain conduit 1210, ensuring that the axial projection of the direct current channel 1204 is located within the tube outlet 1211 of the drain conduit 1210.

Alternatively, in a third example of the present application, as shown in fig. 11 and 13, the tube outlet 1211 of the drainage tube 1210 has a first sub-outlet 12111 near the optical window 112 and a second sub-outlet 12112 remote from the optical window 112, the first sub-outlet 12111 being aligned with the direct current channel 1204. Thus, fluid exiting through the first sub-outlet 12111 will flow out through the flow channel 1204 to directly flush the area to be observed; at the same time, the fluid flowing out through the second sub-outlet 12112 can be smoothly diverted by the diversion cavity 122, so as to reduce the kinetic energy loss of the fluid and facilitate better flushing of the optical window 112.

It is noted that fig. 14 to 16 show a fourth example of the drainage member according to the above-described embodiment of the present application; compared to the above-described third example according to the present application, the drainage member 10 according to the fourth example of the present application is different in that: the tube outlet 1211 of the drainage tube 1210 is partially positioned within the drainage lumen 1220 such that a portion of the fluid flowing out through the tube outlet 1211 of the drainage tube 1210 flows into the drainage lumen 1220 first and then out of the drainage lumen 1220 through the drainage outlet 1203 to flush the light window 112; at the same time, another portion of the fluid flowing out through the tube outlet 1211 of the drainage tube 1210 does not flow into the drainage lumen 1220, but directly to the region to be observed to flush the region to be observed.

Alternatively, in a fourth example of the present application, as shown in fig. 14 and 16, the tube outlet 1211 of the drainage tube 1210 has a first sub-outlet 12111 near the light window 112 and a second sub-outlet 12112 remote from the light window 112; first sub-outlet 12111 is located outside of drainage lumen 1220 and second sub-outlet 12112 is located within drainage lumen 1220. Thus, the fluid flowing out through the first sub-outlet 12111 directly flows to the region to be observed to directly flush the region to be observed; at the same time, the fluid flowing out through the second sub-outlet 12112 flows out through the drainage outlet 1203 under the drainage action of the drainage cavity 122 to flush the optical window 112.

It should be noted that, in the fourth example of the present application, although the inner wall surface of the drainage cavity 122 may be implemented as an arc-shaped wall surface to guide the fluid flowing out through the second sub-outlet 12112 to turn to flush the optical window 112, the arc-shaped wall surface cannot have a better guiding effect, so that the fluid flowing out through the second sub-outlet 12112 is affected by the fluid flowing out through the first sub-outlet 12111, and is ejected obliquely along the plane where the optical window 112 is located, so that it is difficult to flush the optical window 112 directly, and the cleaning effect of the lens is affected.

To solve this problem, a fifth example of the drainage member according to the above-described embodiment of the present application is shown in fig. 17; the drainage member 10 according to the fifth example of the application differs from the above-described fourth example of the application in that: the drainage cavity 122 in the drainage member 10 has a drainage side wall 1221 adjacent the drainage body 121, a drainage top wall 1222 adjacent the drainage outlet 1203, and a transition wall 1223 extending curvedly from the drainage side wall 1221 to the drainage top wall 1222; the drainage top wall 1222 is a plane extending horizontally from the transition wall 1223 toward the light window 112 to better direct the liquid flowing out through the second sub-outlet 12112 to flush the light window 112, improving the lens flushing effect.

It is noted that in other examples of the application, the drainage top wall 1222 may also be implemented as a flat or curved surface extending obliquely downward from the transition wall 1223 toward the optical window 112, so that the drainage cavity 1220 has a constriction, ensuring that the liquid flowing out through the second sub-outlet 12112 directly washes the optical window 112 for better lens flushing.

In addition, since the first sub-outlet 12111 is close to the optical window 112 and the second sub-outlet 12112 is far from the optical window 112, the fluid flowing out through the second sub-outlet 12112 is easily mixed with or collides with the fluid flowing out through the first sub-outlet 12111 to be mutually affected in the course of turning in the drainage chamber 1220 to flow toward the optical window 112. To solve this problem, in other examples of the present application, the drainage member 10 may further include a shunt portion integrally connected with the drainage cavity 122 such that the fluid of the flushing lens and the fluid of the flushing region to be observed do not affect each other, so as to achieve the effect of flushing the region to be observed while flushing the lens.

Illustratively, a sixth example of a drainage member according to the above-described embodiment of the present application is shown in fig. 18 and 19; compared to the above-described fifth example according to the present application, the drainage member 10 according to the sixth example of the present application is different in that: the flow guide 10 further comprises a flow dividing portion 13, the flow dividing portion 13 comprising a first flow dividing plate 131 located within the flow guide cavity 1220, the first flow dividing plate 131 extending from an inner wall of the flow guide cavity 122 towards the tube outlet 1211 of the flow guide duct 1210 to separate the areas corresponding to the first sub-outlet 12111 and the second sub-outlet 12112, such that fluid flowing out through the second sub-outlet 12112 is separated from fluid flowing out through the first sub-outlet 12111, reducing interaction therebetween.

In other words, in the above-described sixth example of the present application, as shown in fig. 18 and 19, the first flow dividing plate 131 may divide the flow guiding chamber 1220 into a straight flushing area corresponding to the first sub-outlet 12111 and a flushing area corresponding to the second sub-outlet 12112, so that the fluid flowing out through the second sub-outlet 12112 flows through the flushing area to flush the lens while the fluid flowing out through the first sub-outlet 12111 flows through the straight flushing area to flush the region to be observed.

It should be noted that, in the seventh example of the present application, as shown in fig. 20, the drainage member 10 of the present application may further include the first flow dividing plate 131 on the basis of the third example, so as to separate the fluid flowing out through the second sub-outlet 12112 from the fluid flowing out through the first sub-outlet 12111, which is not described in detail herein.

It is worth mentioning that fig. 21 to 24 show an eighth example of the drainage member according to the above-described embodiment of the present application; compared to the above-described sixth example according to the present application, the drainage member 10 according to the eighth example of the present application is different in that: the flow dividing portion 13 may further include a second flow dividing plate 132 positioned within the flow directing chamber 1220, the second flow dividing plate 132 having a pair of flow dividing surfaces 1320 extending asymptotically from the inner wall of the flow directing chamber 122 toward the second sub-outlet 12112 to divide the flushing area in communication with the second sub-outlet 12112 into a pair of flushing sub-areas positioned on the left and right sides of the first sub-outlet 12111 such that the fluid flowing out through the second sub-outlet 12112 is better divided into two sub-streams so as to control the flow rates of the two sub-streams.

Alternatively, as shown in fig. 22, the second flow dividing plate 132 is biased within the drainage lumen 1220 such that the flow rates of the tributaries flushed from the two flush sub-areas are different from each other. It will be appreciated that in other examples of the application, the inner wall of the drainage cavity 122 may extend gradually to the drainage outlet 1203, such that fluid flowing out through the second sub-outlet 12112 flows from the drainage outlet 1203 to the light window 112 in a bunched manner under the drainage action of the inner wall of the drainage cavity 122, helping to improve the lens flushing effect.

It is worth mentioning that fig. 25 shows a ninth example of the drainage member according to the above-described embodiment of the present application; compared to the above-described sixth example according to the present application, the drainage member 10 according to the ninth example of the present application is different in that: the diverting portion 13 further includes a pair of first diverting arms 133 adjacent to the optical window 112, and the two first diverting arms 133 extend gradually from the left and right ends of the first diverting plate 131, respectively. In this way, the two first deflector arms 133 can grip the first sub-outlet 12111 so as to direct the fluid exiting through the second sub-outlet 12112 to more evenly counter-flush the light window 112 after forming two sub-streams.

Further, a tenth example of the drainage member according to the above-described embodiment of the present application is shown in fig. 26; compared to the above-described fifth example according to the present application, the drainage member 10 according to the tenth example of the present application is different in that: the flow guide 10 further comprises a flow dividing portion 13, the flow dividing portion 13 comprising a pair of first flow guiding arms 133 adjacent to the optical window 112, the two first flow guiding arms 133 extending asymptotically from both ends of a dividing line between the first sub-outlet 12111 and the second sub-outlet 12112, respectively. In this way, the two first guiding arms 133 can hold the first sub-outlet 12111, and still guide the fluid flowing out through the second sub-outlet 12112 to more uniformly counter-flush the light window 112 after forming two sub-streams.

It is noted that in the above-described ninth and tenth examples of the present application, as shown in fig. 25 and 26, the two first deflector arms 133 are integrally connected to form an arc-shaped arm surrounding the first sub-outlet 12111. In this way, the fluid flowing out of the drainage lumen 1220 can flow in a predetermined direction, so that the fluid flowing out through the first sub-outlet 12111 can be ejected toward the region to be observed, so that the fluid flowing out through the second sub-outlet 12112 can be ejected toward the optical window, avoiding mutual influence therebetween. It is understood that in other examples of the present application, the second baffle 132 may exist simultaneously with the first baffle arm 133, which is not described herein.

It is worth mentioning that fig. 27 to 29 show an eleventh example of the drainage member according to the above-described embodiment of the present application; compared to the above-described sixth example according to the present application, the drainage member 10 according to the eleventh example of the present application is different in that: the diverting portion 13 further includes a pair of second diverting arms 134 distant from the optical window 112, the two second diverting arms 134 extending progressively farther from both ends of the dividing line between the first sub-outlet 12111 and the second sub-outlet 12112, respectively. Thus, the two second diversion arms 134 can bar the second sub-outlets 12112 so as to guide the fluid flowing out through the second sub-outlets 12112 to turn at a large angle within the diversion cavity 1220, so that the fluid flowing out through the first sub-outlets 12111 is bypassed to counter-flush the light window, and the flushing effect is improved.

In other words, in the above-described eleventh example of the present application, as shown in fig. 27 and 28, the diverting portion 13 of the flow guide 10 includes both the first diverting plate 131 and the pair of second diverting arms 134; wherein the first splitter plate 131 makes the direct flushing area corresponding to the first sub-outlet 12111 and the flushing area corresponding to the second sub-outlet 12112 not mutually affected, the two second diversion arms 134 can hold the second sub-outlet 12112 so as to guide the fluid flowing out through the second sub-outlet 12112 to respectively turn at a large angle in the drainage cavity 1220, so that the fluid flowing out through the first sub-outlet 12111 bypasses the flushing window, and the flushing effect is improved.

It should be noted that, in the twelfth example of the present application, as shown in fig. 30, the drainage member 10 of the present application may further include a pair of second guiding arms 134 apart from the light window 112 on the basis of the tenth example, and the two second guiding arms 134 extend gradually from both ends of the boundary between the first sub-outlet 12111 and the second sub-outlet 12112, respectively. Thus, on the one hand, the two second diversion arms 134 can hold the second sub-outlets 12112 so as to guide the fluid flowing out through the second sub-outlets 12112 to turn at a large angle in the diversion cavity 1220 respectively, so that the fluid flowing out through the first sub-outlets 12111 is bypassed to offset the light window, and the flushing effect is improved; on the other hand, the two second guiding arms 134 enable the fluid flowing out through the first sub-outlet 12111 to be ejected toward the region to be observed, so that the fluid flowing out through the second sub-outlet 12112 can be ejected toward the optical window to avoid mutual influence therebetween; meanwhile, the two first diversion arms 133 can slow down the opposite flushing of the two branches, so that the water flow flowing to the light window 112 can be distributed more uniformly, and the flushing effect is improved.

It is worth mentioning that fig. 31 to 34 show a thirteenth example of the drainage member according to the above-described embodiment of the present application; compared to the above-described third example according to the present application, the drainage member 10 according to the thirteenth example of the present application is different in that: the diversion portion 13 of the diversion member 10 includes the first diversion plate 131, the second diversion plate 132, the first diversion arm 133 and the second diversion arm 134 at the same time, so as to minimize the interaction between the liquid flowing out through the second sub-outlet 12112 and the liquid flowing out through the first sub-outlet 12111. It is understood that, in other examples of the present application, the diversion portion 13 may include one or more of the first diversion plate 131, the second diversion plate 132, the first diversion arm 133 and the second diversion arm 134, so long as the corresponding diversion effect can be achieved, which is not described in detail herein.

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. Drainage piece, its characterized in that includes:

a mounting portion for mounting a lens, the mounting portion having a light window for allowing the lens to transmit light; and

the drainage part comprises a drainage tube body and a drainage cavity; the drainage tube body extends laterally from a side wall of the mounting portion to form a drainage conduit for communication with a fluid passage of the insertion portion; the drainage cavity extends from the distal end of the drainage tube body to form a drainage cavity communicated with the drainage pipeline; the drainage cavity is provided with a drainage outlet facing the light window, and the drainage pipeline and the drainage cavity jointly form a drainage channel for guiding fluid from the fluid channel to turn to flow to the light window for lens cleaning;

Wherein the tube outlets of the drainage tubes are all positioned in the drainage cavity; the drainage portion further has a direct current channel in communication with the drainage cavity, the direct current channel extending axially to penetrate the drainage cavity, and a flow area of the direct current channel being smaller than a flow area of the drainage pipe.

2. The flow guide according to claim 1, wherein an axial projection of the direct current channel is located within a tube outlet of the flow guide tube; the direct current channel is a circular hole coaxially arranged with the drainage pipeline, and the inner diameter of the direct current channel is smaller than that of the drainage pipeline.

3. The flow guide according to claim 1, wherein an axial projection of the direct current channel is located within a tube outlet of the flow guide tube; the direct current channel is a semicircular hole coaxially arranged with the drainage pipeline, and the inner diameter of the direct current channel is smaller than or equal to the inner diameter of the drainage pipeline; the tube outlet of the drainage tube has a first sub-outlet close to the light window and a second sub-outlet remote from the light window, the first sub-outlet being aligned with the direct current channel.

4. The drainage piece of claim 3, further comprising a shunt portion connected to the drainage cavity.

5. The flow diverter of claim 4, wherein the flow diversion portion comprises a first flow diversion plate positioned within the flow diversion cavity, the first flow diversion plate extending from an inner wall of the flow diversion cavity toward a tube outlet of the flow diversion tube to separate regions corresponding to the first sub-outlet and the second sub-outlet.

6. The flow guide according to claim 5, wherein the flow dividing portion further comprises a pair of first flow guide arms adjacent to the light window, two of the flow guide arms extending asymptotically from left and right ends of the first flow dividing plate, respectively, and the two first flow guide arms being integrally connected to form an arc-shaped arm surrounding the first sub-outlet.

7. The flow guide according to claim 4, wherein the flow dividing portion includes a pair of first flow guide arms adjacent to the light window, the two flow guide arms extending asymptotically from both ends of a dividing line between the first sub-outlet and the second sub-outlet, respectively, and the two first flow guide arms being integrally connected to form an arc-shaped arm surrounding the first sub-outlet.

8. The flow diverter of any one of claims 5-7, wherein the flow diversion portion further comprises a second flow diversion plate positioned within the flow diversion cavity, the second flow diversion plate having a pair of flow diversion surfaces extending asymptotically from the flow diversion cavity toward the second sub-outlet to divide a flushing area in communication with the second sub-outlet into a pair of flushing sub-areas positioned on either side of the first sub-outlet.

9. The flow diverter of any one of claims 5-7, wherein the flow diversion portion further comprises a pair of second flow diversion arms distal from the light window, the two second flow diversion arms extending progressively farther from each end of the line of demarcation between the first sub-outlet and the second sub-outlet.

10. The drainage piece according to any one of claims 1 to 3, wherein the drainage part further comprises a guiding arm body integrally extending from a proximal end of the drainage tube body for guiding both ends of a communicating tube to be respectively inserted into the fluid channel and the drainage tube; the guide arm body is provided with an inner arc surface and an outer arc surface which are oppositely arranged, wherein the inner arc surface is used for being matched with the outer wall of the communicating pipe, and the outer arc surface is used for being matched with the inner wall of the sleeve.

11. The flow diverter of any one of claims 1-3, wherein the flow diverter cavity has a flow diverter side wall adjacent the flow diverter body, a flow diverter top wall adjacent the flow diverter outlet, and a transition wall extending curvingly from the flow diverter side wall to the flow diverter top wall; the drainage top wall is a plane extending horizontally or obliquely downwards from the transition wall surface towards the light window.

12. An endoscopic cleaning head, comprising:

the drainage member of any one of claims 1 to 11;

the distal end of the sleeve is sleeved on the drainage piece, and the proximal end of the sleeve is used for sleeved on the distal end of the insertion part;

and the lens is arranged on the drainage piece.

13. The endoscopic cleaning head according to claim 12, further comprising a support base disposed within the cannula to support the lens.

14. An endoscope, comprising:

an operation unit;

the endoscopic cleaning head according to claim 12 or claim 13, wherein the endoscopic cleaning head is connected to a distal end of the insertion portion.