CN218165296U

CN218165296U - Plug-in structure, sampling device and endoscope system

Info

Publication number: CN218165296U
Application number: CN202221686309.7U
Authority: CN
Inventors: 陈东; 张瑞
Original assignee: Xinguangwei Medical Technology Suzhou Co ltd
Current assignee: Xinguangwei Medical Technology Suzhou Co ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2022-12-30
Anticipated expiration: 2032-07-01

Abstract

The utility model discloses a grafting structure, sampling device and endoscope system, include: the connecting seat comprises an inserting part and a flow guide channel; the connector is connected to the pipeline piece and can be inserted into the insertion part; the elastic piece is arranged on the connecting seat and provides acting force for driving the connecting head to be fastened in the inserting part; the connector is suitable for being connected with the flow guide channel after being inserted into the insertion part, and a sealing structure for preventing the connector from leaking is arranged in the insertion part. The utility model discloses can be convenient for the butt joint of pipeline spare and connecting seat, and have good dependence height and leakproofness after the butt joint.

Description

Plug-in structure, sampling device and endoscope system

Technical Field

The utility model relates to the technical field of medical equipment, in particular to grafting structure, sampling device and endoscope system.

Background

When examining a disease in a human body by an endoscope, it is often necessary to take human tissue out of the body and perform examination and test on other instruments. For example, in bronchoscopic clinical diagnosis and treatment, the suction of airway distal secretions through a bronchoscope and the suction of lavage fluid through bronchoscopic alveolar lavage are common methods for obtaining a specimen of an airway infection part.

In the sampling process, a sampling device is needed, and the sampling device and the endoscope are in butt joint through a pipeline piece, so that human tissues in the endoscope enter the sampling device through the pipeline piece. The existing sampling device is generally provided with a connector, the connector is communicated with a flow guide channel in the sampling device, a pipeline piece is directly sleeved on the connector, and the pipeline piece is in interference fit with the connector, so that the butt joint of the connector and the pipeline piece is realized. However, the existing pipeline parts generally adopt a hose structure, and when the structure is adopted for splicing, the bearing capacity of the pipeline parts is limited, and the pipeline parts are very inconvenient to assemble and disassemble.

Accordingly, there is a need for improvements in the art that overcome the deficiencies in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a grafting structure, sampling device and endoscope system to make things convenient for the grafting of pipeline spare.

The utility model aims at realizing through the following technical scheme: a plug-in structure comprising: the connecting seat comprises an inserting part and a flow guide channel; the connector is connected to the pipeline piece and can be inserted into the insertion part; the elastic piece is arranged on the connecting seat and provides acting force for driving the connecting head to be fastened in the inserting part; the connector is suitable for being connected with the flow guide channel after being inserted into the insertion part, and a sealing structure for preventing the connector from leaking is arranged in the insertion part.

Furthermore, a first plug hole communicated with the flow guide channel is formed in the plug part, the connector is in plug fit with the first plug hole, and the elastic piece is an elastic buckle in buckle fit with the connector.

Furthermore, the elastic part comprises a first buckle and a second buckle which are oppositely arranged, and an avoiding space for guiding the connector to be inserted into the first inserting hole is formed between the first buckle and the second buckle.

Further, the sealing structure is a sealing gasket arranged at the outlet end of the first inserting hole, and when the connector is in buckling fit with the elastic part, the sealing gasket is abutted between the connector and the flow guide channel.

Furthermore, a supporting part is arranged at the position, located at the outlet end, of the first inserting hole, the sealing gasket is arranged on the supporting part, and the sealing gasket is provided with a first avoiding hole which is communicated with the connector and the flow guide channel.

Furthermore, the elastic part is an elastic sleeve fixed in the insertion part, the elastic part comprises a second insertion hole communicated with the flow guide channel, and the connector is in insertion fit with the second insertion hole.

Furthermore, the second inserting hole is connected with the flow guide channel in a sealing mode, the inner diameter of the second inserting hole is smaller than the maximum inner diameter of the connector, and the inner wall of the second inserting hole forms the sealing structure.

Furthermore, an elastic sheet is arranged at the outlet end of the second plug hole connected with the flow guide channel, and the elastic sheet is provided with an opening slit for the connector to pass through.

Furthermore, the elastic sheet is arranged around the inner peripheral side of the second inserting hole, and the elastic sheet is suitable for being tightly attached to the outer peripheral side of the connector when the connector passes through the elastic sheet.

Furthermore, the utility model provides a sampling device, including the aforesaid grafting structure, be equipped with the installation department that is used for installing the sampling bottle on the connecting seat, the water conservancy diversion passageway not with the one end that the connector meets extends to the installation department.

Furthermore, the utility model also provides an endoscope system, include: the aforementioned sampling device; an endoscope includes a sampling portion connected to the tube member.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model has the advantages that the connector is arranged on the pipeline piece, the inserting part for inserting the connector is arranged on the connecting seat, the supporting and guiding effect of the connector is good, and the butt joint of the pipeline piece and the connecting seat is convenient; the connecting seat is provided with an elastic piece which can provide acting force for driving the connecting head to be fastened in the inserting part so as to improve the connection reliability of the connecting head and the inserting part; in addition, a sealing structure is arranged in the inserting part, so that the connector is sealed with the flow guide channel after being installed in the inserting part, leakage in the sampling process is prevented, and use experience is improved.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the plugging structure of the present invention.

Fig. 2 is a partial enlarged view of fig. 1 at a.

Fig. 3 is a schematic cross-sectional view of fig. 1.

Fig. 4 is a schematic structural diagram of the connecting head in fig. 1.

Fig. 5 is a schematic structural diagram of embodiment 2 of the plug structure of the present invention.

Fig. 6 is a schematic cross-sectional view of fig. 5.

Fig. 7 is a schematic view of the structure of the elastic member of fig. 5.

Fig. 8 is a schematic structural view of an endoscope system embodying the insertion structure of fig. 1 of the present invention.

Fig. 9 is a schematic structural view of an endoscope system embodying the insertion structure of fig. 5 of the present invention.

In the figure:

1. a connecting seat; 11. a plug-in part; 111. a first plug hole; 112. a support portion; 113. a mounting cavity; 114. a second avoidance hole; 12. a flow guide channel; 13. an installation part; 2. a connector; 21. a connector body; 22. a shoulder block; 221. a first guide surface; 222. a second guide surface; 223. a third guide surface; 3. a pipe member; 4. an elastic member; 41. a first buckle; 411. a first arc-shaped slot; 42. a second buckle; 421. a second arc-shaped slot; 43. avoiding a space; 44. a second plug hole; 5. a gasket; 51. A first avoidance hole; 6. a spring plate; 61. opening the seam; 7. sampling bottles; 8. an endoscope; 81. a sampling part.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "comprising" and "having," as well as any variations thereof, in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.

Please refer to fig. 1 and fig. 3, a plugging structure according to a preferred embodiment of the present invention includes: the connecting seat 1 comprises an inserting part 11 and a flow guide channel 12; the connector 2 is connected to the pipeline piece 3 and can be inserted into the insertion part 11; the elastic piece 4 is arranged on the connecting seat 1 and provides acting force for driving the connecting head 2 to be fastened in the inserting part 11; wherein, the connector 2 is suitable for being connected with the flow guide channel 12 after being inserted into the insertion part 11, and a sealing structure for preventing the connector 2 from leaking is arranged in the insertion part 11.

The utility model has the advantages that the pipe fitting 3 is provided with the connector 2, the connecting seat 1 is provided with the inserting part 11 for the insertion of the connector 2, the connector 2 has good supporting and guiding effects, and the butt joint of the pipe fitting 3 and the connecting seat 1 is convenient; the connecting seat 1 is provided with an elastic piece 4, and the elastic piece 4 can provide acting force for driving the connecting head 2 to be fastened in the inserting part 11 so as to improve the reliability of the connection of the connecting head 2 and the inserting part 11; in addition, be provided with seal structure in grafting portion 11 for connector 2 is installed and is sealed mutually with water conservancy diversion passageway 12 behind grafting portion 11, prevents to sample in-process and leaks, improves and uses experience.

Example 1

Referring to fig. 1 to 3, in the present embodiment, a first insertion hole 111 adapted to the connector 2 is provided in the insertion portion 11, and the first insertion hole 111 has an inlet end for inserting the connector 2 and an outlet end connected to the flow guide channel 12. The elastic member 4 is a snap structure, the elastic member 4 is located at an inlet end of the first inserting hole 111, the connector 2 can be installed into the first inserting hole 111 through the elastic member 4, and the connector 2 is in snap fit with the elastic member 4 after being installed in place, so as to limit the connector 2 from being separated from the first inserting hole 111. The outlet end is provided with a supporting portion 112, and the sealing structure is abutted between the supporting portion 112 and the connector 2 to drive the connector 2 to be in sealing connection with the diversion channel 12.

Further, the connector 2 includes a connector body 21 and a shoulder 22. The root of the joint body 21 is connected to the pipe member 3, and the head of the joint body 21 is connected to the guide passage 12. The retaining shoulder 22 is located at the root position of the joint body 21 and is provided on the joint body 21 in a protruding manner along the circumferential direction of the joint body 21. The elastic member 4 is configured to allow the shoulder 22 to pass in the mounting direction of the header 2 and to block the shoulder 22 in the detaching direction of the header 2. When the connector 2 is mounted in place, the elastic member 4 abuts against the shoulder 22 and drives the head of the connector 2 to abut against the sealing structure.

Further, the elastic member 4 includes a first buckle 41 and a second buckle 42 which are oppositely arranged, an avoiding space 43 is formed between the first buckle 41 and the second buckle 42, the avoiding space 43 is a through structure in the mounting direction of the connector 2, and is respectively an inlet side and an outlet side on two sides of the mounting direction, and the connector body 21 can enter the avoiding space 43 from the inlet side of the avoiding space 43 and leave the avoiding space 43 from the outlet side to enter the first inserting hole 111. Preferably, the first and

second catches

41 and 42 may be integrally formed with the connection holder 1 for convenience of production.

The first buckle 41 and the second buckle 42 have certain elastic capacity, and the first buckle 41 and the second buckle 42 can move back to back when being acted by external force so as to enlarge the avoidance space 43 and rebound to reset when the external force is removed. When the shoulder 22 enters from the inlet side of the avoiding space 43, the first buckle 41 and the second buckle 42 receive the acting force from the shoulder 22 and move back to avoid the shoulder 22, and when the shoulder 22 leaves from the outlet side of the avoiding space 43, the connector 2 is installed in place, the shoulder 22 removes the acting force on the first buckle 41 and the second buckle 42, so that the first buckle 41 and the second buckle 42 elastically reset, at the moment, the outlet side of the avoiding space 43 abuts against the shoulder 22, and the head of the connector body 21 tightly abuts against the sealing structure.

In order to facilitate the stop shoulder 22 to smoothly enter the avoiding space 43 during the installation process, referring to fig. 4, the stop shoulder 22 includes a first guide surface 221 facing the avoiding space 43, the first guide surface 221 has an inner edge connected to the joint body 21 and an outer edge located outside the inner edge, the inner edge of the first guide surface 221 is closer to the head of the joint body 21 than the outer edge of the first guide surface 221, so that the first guide surface 221 is disposed obliquely, and when the stop shoulder 22 enters the avoiding space 43, the first catch 41 and the second catch 42 can move away from the avoiding position under the guidance of the first guide surface 221.

The shoulder 22 further includes a second guide surface 222 contacting an outer edge of the first guide surface 221, and the second guide surface 222 faces an inner wall of the escape space 43 to abut against the inner wall of the escape space 43 after the shoulder 22 enters the escape space 43, so that the escape space 43 is kept in an expanded state and the shoulder 22 is guided to move toward an exit side of the escape space 43.

Preferably, in order to facilitate the detachment of the connection head 2 from the first insertion hole 111, the shoulder 22 further includes a third guide surface 223, the third guide surface 223 is connected to the opposite side of the second guide surface 222 from the first guide surface 221, the third guide surface 223 has an inner edge contacting the joint body 21 and an outer edge located outside the inner edge, the outer edge of the third guide surface 223 is closer to the head of the joint body 21 than the inner edge of the third guide surface 223, so that the third guide surface 223 is disposed obliquely, and after the connection head 2 is mounted in place, the third guide surface 223 abuts against the outlet side of the escape space 43. When it is desired to detach the connecting head 2, it is only necessary to apply a large force in the detaching direction, and the first catch 41 and the second catch 42 can now be moved away from each other under the guidance of the third guide surface 223.

Indeed, in other embodiments, the end surfaces of the first latch 41 and the second latch 42 corresponding to the inlet side and the outlet side of the avoiding space 43 may be provided with inclined surfaces, which can also provide the function of guiding the retaining shoulder 22 when the connector 2 is installed and removed; or for optimum guiding, both the shoulder 22 and the catch are provided with inclined guide surfaces, the guide surface of the shoulder 22 and the guide surface of the catch cooperating obliquely.

Further, as shown in fig. 2, one surface of the first buckle 41 facing the second buckle 42 is recessed inwards to form a first arc-shaped groove 411, one surface of the second buckle 42 facing the first buckle 41 is recessed inwards to form a second arc-shaped groove 421, the first arc-shaped groove 411 and the second arc-shaped groove 421 are matched to form an avoiding space 43, the avoiding space 43 is coaxially arranged with the first inserting-connecting hole 111, and the peripheral side of the avoiding space 43 can play a role in positioning and guiding, so that the connector 2 is accurately inserted into the first inserting-connecting hole 111 during installation. The maximum outer diameter of the joint body 21 is preferably equal to or slightly smaller than the inner diameter of the escape space 43 to ensure that the joint body 21 smoothly passes through the escape space 43 in the attaching and detaching direction.

Further, referring to fig. 3, the sealing structure is a gasket 5 disposed on the supporting portion 112, and the gasket 5 may be made of an elastic sealing material such as rubber or silicone. The gasket 5 may be fastened to the support 112 by gluing, interference fit, or the like. The sealing gasket 5 is provided with a first avoiding hole 51 at a position corresponding to the flow guide channel 12 to avoid blocking the conduction between the flow guide channel 12 and the first inserting hole 111. The distance from the gasket 5 to the outlet side of the escape space 43 is slightly smaller than the distance from the gasket 5 to the third guide surface 223 of the shoulder 22, so that the head of the joint body 21 can tightly abut against the gasket 5 when the third guide surface 223 of the shoulder 22 abuts against the outlet side of the escape space 43.

When the plug structure is installed, the connector body 21 enters the avoiding space 43 from the inlet side of the elastic member 4, and is inserted into the first plug hole 111 under the guidance of the avoiding space 43, in the process, the blocking shoulder 22 gradually approaches the inlet side of the avoiding space 43, and along with the gradual penetration of the connector body 21, the blocking shoulder 22 props up the elastic member 4 and moves to the outlet side of the avoiding space 43 along the avoiding space 43, when the blocking shoulder 22 leaves the avoiding space 43 from the outlet side of the avoiding space 43, the elastic member 4 resets and abuts against the blocking shoulder 22, and meanwhile, the head of the connector body 21 abuts against the sealing gasket 5, so that the connector body 21 is in sealing connection with the flow guide channel 12.

Example 2

Referring to fig. 5 and 6, in the present embodiment, a mounting cavity 113 is formed in the insertion part 11, one side of the mounting cavity 113 is open, a second avoiding hole 114 is formed on an opposite side of the mounting cavity 113 opposite to the open side, and the second avoiding hole 114 is respectively communicated with the flow guide channel 12 and the mounting cavity 113. The elastic member 4 is an elastic sleeve fixed in the inserting part 11, and the elastic sleeve can be a rubber sleeve, a silica gel sleeve or the like. The elastic member 4 is fitted into the mounting cavity 113 from the open side and abuts against the opposite side. The elastic member 4 and the inner wall of the installation cavity 113 can be tightly connected by gluing, interference fit, and the like.

The elastic element 4 includes a second insertion hole 44 engaged with the connector 2, one end of the second insertion hole 44 is communicated with the open side, and the other end is engaged with the second avoiding hole 114. Due to the tight connection between the elastic element 4 and the mounting cavity 113, the sealing property between the second inserting hole 44 and the second avoiding hole 114 can be ensured, and the sealing connection between the second inserting hole 44 and the flow guide channel 12 is further realized. The inner diameter of the second insertion hole 44 is smaller than the maximum inner diameter of the connector 2, and at this time, the inner wall of the second insertion hole 44 forms a sealing structure. When the connector 2 is plugged into the second plugging hole 44, the inner wall of the second plugging hole 44 tightly abuts against the outer periphery of the connector 2, so as to achieve the sealing connection between the second plugging hole 44 and the connector 2. The connector 2 is preferably a pagoda connector, so that the sealing performance between the connector 2 and the second inserting hole 44 can be effectively improved while the connector is convenient to disassemble and assemble. Preferably, the root of the connector 2 is also provided with a shoulder 22, and when the connector 2 is installed in place, the shoulder 22 abuts against the end surface of the elastic element 4 at the inlet end of the second inserting hole 44, so that the operator can insert the connector to the preset depth accurately.

Because the diameter of the pagoda joint is gradually reduced from the root to the head, the root of the joint 2 is tightly connected with the inner wall of the second inserting hole 44, and the head of the joint 2 is farther from the second inserting hole 44. In order to reliably limit the connector 2 in the second inserting hole 44 and improve the sealing performance between the connector 2 and the second inserting hole 44, an outlet end of the second inserting hole 44, which is connected with the flow guide channel 12, is provided with an elastic sheet 6, and the elastic sheet 6 may be a rubber sheet, a silicon sheet, or the like. Referring to fig. 7, the elastic sheet 6 surrounds the inner periphery of the second inserting hole 44 and blocks the outlet end of the second inserting hole 44, and the elastic sheet 6 is provided with an opening 61 through which the connector 2 passes. The opening slit 61 is cut along the center line of the elastic sheet 6, the opening slit 61 preferably extends to the edge of the elastic sheet 6 to divide the elastic sheet 6 into a plurality of pieces, and when the connector 2 passes through the opening slit 61, the pieces of the elastic sheet 6 are deformed and turned outwards, and simultaneously provide a reaction force to the connector 2. In this embodiment, the number of the opening slits 61 is two, which is convenient for processing and ensures the sealing effect, and indeed, in other embodiments, the number of the opening slits 61 may be increased as needed.

When the connector 2 is inserted into the second inserting hole 44 along the installation direction, the connector 2 can pass through the elastic sheet 6 and be connected with the second avoiding hole 114, the elastic sheet 6 is suitable for being tightly attached to the outer peripheral side of the connector 2 when the head of the connector 2 passes through, so that under the condition of avoiding special processing of the second avoiding hole 114, the problem that the connector 2 shakes in the second avoiding hole 114 is effectively solved, the outer peripheral side of the connector 2 close to the head can be hermetically connected with the second inserting hole 44, the positions of the connector 2 close to the head and the root can be hermetically connected with the second inserting hole 44, and the reliability of the connector 2 after installation is improved. Preferably, the resilient piece 6 may be integrally formed with the elastic member 4 for convenience of production.

When the plug structure is installed, the connector 2 is inserted into the second plug hole 44 from the inlet side of the plug portion 11, and along with the increase of the insertion depth, the head of the connector 2 gradually approaches the elastic sheet 6 and finally extends out of the elastic sheet 6 to realize the butt joint with the flow guide channel 12, the outer peripheral side of the connector 2 close to the head abuts against the elastic sheet 6, the outer peripheral side of the connector 2 close to the root abuts against the inner wall of the second plug hole 44, and therefore a double-sealing structure is formed between the connector 2 and the second plug hole 44.

Example 3

Referring to fig. 1 or 5, in this embodiment, the present invention provides a sampling device including the insertion structure in embodiment 1 or embodiment 2. The connecting seat 1 is provided with an installation part 13 for installing the sampling bottle 7, and one end of the flow guide channel 12, which is not connected with the connecting head 2, extends to the installation part 13, so that the tissue sample can sequentially enter the sampling bottle 7 through the pipeline part 3, the connecting head 2 and the flow guide channel 12. Preferably, the axis of the first insertion hole 111 or the second insertion hole 44 is inclined to the axis of the sample bottle 7, so as to facilitate the insertion operation of the operator.

Example 4

Referring to fig. 8 and 9, in this embodiment, the present invention provides an endoscope system, which includes an endoscope 8 and the aforementioned sampling device, wherein the endoscope 8 includes a sampling portion 81 connected to the pipe member 3, and a sampling channel (not shown) for flowing a tissue sample is formed in the sampling portion 81.

The above description is only for the purpose of illustrating embodiments of the present invention and is not intended to limit the scope of the present invention, and all modifications, equivalents, and equivalent structures or equivalent processes that can be used directly or indirectly in other related fields of technology shall be encompassed by the present invention.

Claims

1. A plug-in structure, comprising:

the connecting seat (1) comprises an inserting part (11) and a flow guide channel (12);

the connector (2) is connected to the pipeline piece (3) and can be inserted into the insertion part (11); and

the elastic piece (4) is arranged on the connecting seat (1) and provides acting force for driving the connecting head (2) to be fastened in the inserting part (11);

the connector (2) is suitable for being connected with the flow guide channel (12) after being inserted into the inserting part (11), and a sealing structure for preventing the connector (2) from leaking is arranged in the inserting part (11).

2. The plugging structure according to claim 1, wherein a first plugging hole (111) communicating with the flow guiding channel (12) is formed in the plugging portion (11), the connector (2) is plugged and matched with the first plugging hole (111), and the elastic member (4) is an elastic buckle which is buckled and matched with the connector (2).

3. The plug-in connection structure according to claim 2, characterized in that the elastic member (4) comprises a first catch (41) and a second catch (42) which are arranged opposite to each other, and an escape space (43) for guiding the connector (2) to be inserted into the first plug-in hole (111) is formed between the first catch (41) and the second catch (42).

4. The plug structure according to claim 2, wherein the sealing structure is a sealing gasket (5) disposed at the outlet end of the first plug hole (111), and when the connector (2) is snap-fitted to the elastic member (4), the sealing gasket (5) is held between the connector (2) and the flow guide channel (12).

5. The plug-in connection according to claim 4, characterized in that the first plug-in hole (111) is provided with a support (112) at the outlet end, the sealing gasket (5) is provided on the support (112), and the sealing gasket (5) is provided with a first avoiding hole (51) which conducts the connector (2) and the flow guide channel (12).

6. The plug structure according to claim 1, wherein the elastic member (4) is an elastic sleeve fixed in the plug portion (11), the elastic member (4) includes a second plug hole (44) communicated with the flow guide channel (12), and the connector (2) is in plug fit with the second plug hole (44).

7. Plug connection according to claim 6, characterized in that the second plug connection hole (44) is connected in a sealing manner to the flow-guiding duct (12), the inner diameter of the second plug connection hole (44) being smaller than the largest inner diameter of the connection head (2), and the inner wall of the second plug connection hole (44) forming the sealing means.

8. The plug structure according to claim 6, wherein an outlet end of the second plug hole (44) connected to the flow guide channel (12) is provided with a spring piece (6), and the spring piece (6) is provided with an opening slit (61) for the connector (2) to pass through.

9. The plug structure according to claim 8, wherein the resilient piece (6) is arranged around an inner circumference of the second plug hole (44), and the resilient piece (6) is adapted to be closely attached to an outer circumference of the connector (2) when the connector (2) passes through.

10. A sampling device, characterized in that, includes the grafting structure of any one of claims 1 to 9, be equipped with the installation department (13) that is used for installing sampling bottle (7) on connecting seat (1), the water conservancy diversion passageway (12) not with the one end that connector (2) meets extends to installation department (13).

11. An endoscopic system, comprising:

the sampling device of claim 10;

an endoscope (8) includes a sampling section (81) connected to the tube (3).