Gas circuit connecting assembly and endoscope host

Abstract

The utility model is suitable for the technical field of endoscope hosts, and provides a gas circuit connecting assembly and an endoscope host, the gas circuit connecting assembly comprises a gas circuit female head, the gas circuit female head is installed on the endoscope host, and the plugging end of the gas circuit female head is provided with a stop part; the sealing piece is installed in the first containing cavity of the gas path female head, and in the inserting direction of the gas path female head, the stopping part is matched with the sealing piece in a limiting mode, so that the sealing piece is kept in the gas path female head; the gas path male head can be inserted into the sealing piece to be connected with the gas path female head. According to the gas path connecting assembly, the sealing piece is installed in the first containing cavity of the gas path female head only through self deformation, the sealing piece is prevented from falling off in the gas path female head through limiting fit of the sealing piece and the stop part, arrangement of anti-falling parts for the sealing piece is reduced, the installation process is simplified, and the cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of endoscope host, and in particular to an air path connection component and an endoscope host. Background Art

[0002] An endoscope is a commonly used medical device that can directly enter the natural channels of the human body and provide doctors with sufficient diagnostic information to treat diseases. When in use, the insertion part of the endoscope enters the human body through the natural channels of the human body or through a small incision made during surgery, and the doctor can directly observe the changes in the relevant parts. An instrument channel tube is provided in the insertion part of the endoscope, and an instrument entrance is provided on the handle of the endoscope. Medical instruments (biopsy forceps, grasping forceps, scissors, etc.) can enter the instrument channel tube of the endoscope through the instrument entrance and enter the field of view, and biopsy sampling, etc., can be performed through the medical instruments.

[0003] In the prior art, when an endoscope is operated in the body, gas and liquid may be required to enter to flush and expand the tissue, etc. The operating end of the endoscope is usually connected to the endoscope host through a connector, and the endoscope host provides the endoscope with the required gas, liquid, light source, etc. Usually, the seal is installed in the first accommodating cavity of the gas circuit female head, and then the seal is limited by a nut in the plugging direction of the gas circuit female head to keep the seal in the gas circuit female head, but there will be problems such as low air tightness, complex assembly, and high cost. Utility Model Content

[0004] The purpose of this application is to provide a gas path connection component and an endoscope host to solve the technical problems existing in the prior art, mainly including the following contents:

[0005] The first aspect of the present application provides a gas path connection assembly for an endoscope host, comprising:

[0006] An air circuit female connector, which is mounted on the endoscope host, and a stopper is provided at the plug end of the air circuit female connector;

[0007] A seal is installed in the first accommodating cavity of the gas circuit female connector, and in the plug-in direction of the gas circuit female connector, the stopper cooperates with the seal to limit the seal so that the seal remains in the gas circuit female connector; the gas circuit male connector can be inserted into the seal to achieve connection with the gas circuit female connector.

[0008] To further implement the present application, the following configuration is particularly adopted: the gas circuit female connector includes a stopper, the stopper is a closed annular structure, and the stopper is arranged around the circumference of the gas circuit female connector; or,

[0009] The gas circuit female connector includes at least two stopper portions, and the at least two stopper portions are spaced apart and distributed along the circumference of the gas circuit female connector.

[0010] In order to further better realize the present application, the following setting structure is particularly adopted: when the air circuit female connector includes at least two stop parts, the stop parts are limiting ribs, and the limiting ribs are distributed along the circumference of the air circuit female connector at the plug-in end.

[0011] In order to further better realize the present application, the following setting structure is particularly adopted: in the circumferential direction of the air circuit female connector, at least one end of the limiting rib is provided with an avoidance recess, and the avoidance recess is used to avoid the edge of the seal when the seal is installed into the air circuit female connector.

[0012] In order to further better realize the present application, the following setting structure is particularly adopted: in the circumferential direction of the gas path female connector, the limiting rib is extended in an arc shape.

[0013] In order to further better implement the present application, the following setting structure is particularly adopted: the end surface of the stopper facing away from the first accommodating cavity is arranged coplanar with the end surface of the plug-in end of the air circuit female connector.

[0014] In order to better realize the present application, the following setting structure is particularly adopted: the seal includes a first interference portion arranged in the second accommodating cavity and a second interference portion on the outer peripheral surface of the second accommodating cavity, the first interference portion and the second interference portion are staggered along the axial direction of the seal, and the first interference portion is close to the insertion end of the seal.

[0015] In order to better realize the present application, the following setting structure is particularly adopted: the seal also includes a first deformation buffer groove, the first deformation buffer groove is arranged along the axial direction of the seal, the first deformation buffer groove is arranged between the first interference portion and the second interference portion, and the first deformation buffer groove is arranged adjacent to the second interference portion.

[0016] In order to better realize the present application, the following setting structure is particularly adopted: the seal also includes a second deformation buffer groove, the first deformation buffer groove and the second deformation buffer groove are distributed along the axial direction of the seal, and the first deformation buffer groove and the second deformation buffer groove define the second interference portion.

[0017] A second aspect of the present application provides an endoscope host, comprising the above-mentioned gas path connection assembly.

[0018] Compared with the prior art, this application has at least the following technical effects:

[0019] The air circuit connection assembly provided by the present application has a stopper portion at the plug-in end of the air circuit female connector, and the seal is installed in the first accommodating cavity of the air circuit female connector. In the plug-in direction of the air circuit female connector, the stopper portion and the seal are limitedly matched to keep the seal in the air circuit female connector. In the air circuit connection assembly of the present application, the seal is installed in the first accommodating cavity of the air circuit female connector only by its own deformation, and the seal is prevented from falling off in the air circuit female connector by the limited cooperation with the stopper portion, which reduces the setting of the anti-falling parts for the seal, simplifies the installation process, and reduces the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a connection diagram of the gas circuit connection component and the gas circuit male connector in this application;

[0022] Figure 2 It is a structural schematic diagram of the gas circuit connection assembly in this application;

[0023] Figure 3 It is a schematic diagram of the structure of the gas circuit female connector in this application;

[0024] Figure 4 This is the cross-section of the gas path female connector in the AA direction in this application. Figure 1 ;

[0025] Figure 5 This is the cross-section of the gas path female connector in the AA direction in this application. Figure 2 ;

[0026] Figure 6 This is the cross-section of the gas path female connector in the AA direction in this application. Figure 3 .

[0027] Figure 7 This is a schematic diagram of the structure of the seal in this application Figure 1 ;

[0028] Figure 8 This is a schematic diagram of the structure of the seal in this application Figure 2 ;

[0029] Fig. 9 This is the cross-section of the female air path connector in the BB direction in this application. Figure 1 ;

[0030] Fig.10 This is the cross-section of the female air path connector in the BB direction in this application. Figure 2 ;

[0031] Fig.11 This is a cross-sectional view of the gas connection assembly in the CC direction in this application. Figure 1 ;

[0032] Fig.12 This is a cross-sectional view of the gas connection assembly in the CC direction in this application. Figure 2 ;

[0033] Fig.13 It is a cross-sectional view in the DD direction after the gas circuit connection assembly in this application is connected to the gas circuit male connector.

[0034] In the figure: 10- female air circuit connector; 11- stopper; 12- first accommodating chamber; 13- plug-in end; 14- avoidance recess; 15- first air circuit passage; 20- male air circuit connector; 30- sealing member; 31- first interference fit portion; 32- second interference fit portion; 33- first deformation buffer groove; 34- second deformation buffer groove; 35- insertion end; 36- second accommodating chamber; 37- second air circuit passage. DETAILED DESCRIPTION

[0035] The following description provides many different embodiments or examples for implementing different features of the present application. The components and arrangements described in the following specific examples are only used to simplify the present application and are only used as examples, not to limit the present application.

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for which protection is claimed, but merely represents the selected embodiments of the present application.

[0037] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0038] In the present application, unless otherwise clearly specified and limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being above, above, and above a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] The inventor discovered in the research that in the related technology, when the endoscope is operated in the body, gas and liquid may need to enter to flush and expand the tissue, etc. The operating end of the endoscope is usually connected to the endoscope host through a connector, and the endoscope host provides the endoscope with the required gas, liquid, light source, etc. Usually, the gas connection assembly at one end of the endoscope host includes a gas circuit female head and a seal, which is installed in the first accommodating cavity of the gas circuit female head, and then the seal is limited by a nut in the plug-in direction of the gas circuit female head to keep the seal in the gas circuit female head, but there are problems such as low air tightness, complex assembly, and high cost.

[0040] In view of this, the first aspect of the present application provides a gas path connection assembly for an endoscope host, such as Figure 1-Figure 13 As shown, including:

[0041] The female gas circuit connector 10 is installed on the main body of the endoscope. The female gas circuit connector 10 is used to plug and connect with the male gas circuit connector 20 on the connector, thereby realizing the connection between the main body of the endoscope and the connector, and further realizing the supply of sufficient gas to the endoscope connected to the connector. The plug-in end 13 of the female gas circuit connector 10 is provided with a stopper 11. One end of the female gas circuit connector 10 plug-in connected with the male gas circuit connector 20 is the plug-in end 13. The stopper 11 is provided circumferentially at the plug-in end 13 of the female gas circuit connector 10. The female gas circuit connector 10 is a hollow structure. Along the axial direction of the female gas circuit connector 10, the female gas circuit connector 10 has a first accommodating cavity 12 and a first gas circuit channel 15 connected to the first accommodating cavity 12, which is used to allow the gas in the main body of the endoscope to enter the male gas circuit connector 20 installed in the first accommodating cavity 12 through the first gas circuit channel 15, so as to realize the gas supply of the main body of the endoscope to the endoscope.

[0042] The seal 30 is installed in the first accommodating cavity 12 of the gas circuit female connector 10. Optionally, the seal 30 is a sealing ring, and the seal 30 is a flexible material, such as a rubber material, a silicone material, etc. The seal 30 is installed in the first accommodating cavity 12 of the gas circuit female connector 10 from the plug end 13 by extrusion, and an interference fit is formed between the seal 30 and the inner wall of the first accommodating cavity 12 to ensure the sealing of the gas circuit female connector 10 and ensure that the seal 30 does not shake or slide in the first accommodating cavity 12. In the plug-in direction of the gas circuit female connector 10, the plug-in direction of the gas circuit female connector 10 in this embodiment is consistent with the axial direction of the gas circuit female connector 10. Among them, since the stopper 11 is arranged on the plug-in end 13, the cavity diameter of the first accommodating cavity 12 close to the plug-in end 13 becomes smaller, and the seal 30 passes through the stopper 11 by being squeezed into the first accommodating cavity 12 of the gas circuit female connector 10, and the stopper 11 and the seal 30 are limitedly cooperated to keep the seal 30 in the first accommodating cavity 12 of the gas circuit female connector 10; the gas circuit male connector 20 of the connector is plugged into the first accommodating cavity 12 of the gas circuit female connector 10, and the seal 30 is used to maintain the sealing between the two, ensuring that the gas provided by the endoscope host can be smoothly delivered to the pipeline of the connector, so as to achieve purposes such as inflating the target part and expanding the part to facilitate inspection.

[0043] Therefore, the gas circuit connection assembly provided by the present application is provided with a stopper 11 at the plug-in end 13 of the gas circuit female connector 10, and the seal 30 is installed in the first accommodating cavity 12 of the gas circuit female connector 10. In the plug-in direction of the gas circuit female connector 10, the stopper 11 and the seal 30 are limitedly matched to keep the seal 30 in the gas circuit female connector 10. In the gas circuit connection assembly of the present application, the seal 30 is installed in the first accommodating cavity 12 of the gas circuit female connector 10 only by its own deformation, and the seal 30 can be prevented from falling off in the gas circuit female connector 10 by the limited cooperation with the stopper 11, which reduces the setting of the anti-falling parts for the seal 30, simplifies the installation process, and reduces the cost.

[0044] According to some optional embodiments, the plug end 13 of the gas circuit female connector 10 includes a stopper 11, the stopper 11 is a closed annular structure, and the stopper 11 is arranged around the circumference of the gas circuit female connector 10;

[0045] Alternatively, the gas circuit female connector 10 includes at least two stopper portions 11 , and the at least two stopper portions 11 are spaced apart along the circumference of the gas circuit female connector 10 .

[0046] In the above solution, the stopper 11 is disposed on the inner wall of the gas circuit female connector 10 at the plug end 13 , and the stopper 11 extends in a direction close to the axis of the gas circuit female connector 10 .

[0047] In some optional embodiments, the stopper 11 is arranged at the position of the plug-in end 13 of the gas circuit female connector 10, and the end surface of the stopper 11 away from the first accommodating chamber 12 is flush with the end surface of the plug-in end 13 of the gas circuit female connector 10; in some optional embodiments, the stopper 11 is arranged at the position of the plug-in end 13 of the gas circuit female connector 10, and the stopper 11 is located on the inner wall of the first accommodating chamber 12. After the seal 30 is installed in the first accommodating chamber 12 of the gas circuit female connector 10 by extrusion, the seal 30 will return to its initial state, that is, the diameter of the seal 30 becomes smaller when it is squeezed into the first accommodating chamber 12. When the installation is completed, the diameter of the seal 30 becomes larger until the initial diameter is restored. At this time, the end of the seal 30 close to the plug-in end 13 is limitedly matched with the stopper 11 to keep the seal 30 in the first accommodating chamber 12. In this process, after the seal 30 is installed in the first accommodating chamber 12, there is no need to install a nut or other limiting member to limit the seal 30 again.

[0048] In some embodiments, a stopper 11 is provided on the plug-in end 13 of the air circuit female connector 10 , and the stopper 11 surrounds the air circuit female connector 10 in a circle to form a closed annular structure, which is used to fully stop the seal 30 and keep the seal 30 in the first accommodating cavity 12 .

[0049] In other embodiments, at least two stoppers 11 are provided on the plug end 13 of the gas circuit female connector 10, and the stoppers 11 are arranged in an annular manner along the circumference of the gas circuit female connector 10, wherein the number of the stoppers 11 may be two, three, four, etc., and is not limited here. When there are two stoppers 11 provided on the gas circuit female connector 10, the two stoppers 11 are symmetrically provided relative to the axis of the gas circuit female connector 10, which can better limit the position of the seal 30; when there are three stoppers 11 provided on the gas circuit female connector 10, the angles between the three stoppers 11 are equal, which can also achieve better limiting of the seal 30.

[0050] According to some optional embodiments, when the air circuit female connector 10 includes at least two stop portions 11, the two stop portions 11 are symmetrically arranged along the axis of the air circuit female connector 10, and the stop portions 11 are preferably limiting ribs, which are distributed along the circumferential extension of the air circuit female connector 10 at the plug-in end 13. The provided limiting ribs increase the limiting strength of the seal 30 and provide a better limiting effect.

[0051] Preferably, the stopper 11 and the gas circuit female connector 10 are integrally formed in the present application, which is convenient for processing and increases the stopping strength of the stopper 11 on the seal 30. In addition, the stopper 11 can also be connected to the gas circuit female connector 10 by welding, gluing, etc.

[0052] According to some optional embodiments, in the circumferential direction of the gas circuit female connector 10, at least one end of the limiting rib is provided with an avoidance recess 14, and the avoidance recess 14 is used to avoid the edge of the seal 30 when the seal 30 is installed into the gas circuit female connector 10. In the above embodiment, the avoidance recess 14 is arc-shaped, and the avoidance recess 14 is recessed in a direction away from the axis of the gas circuit female connector 10, thereby expanding the space for the seal 30 to pass through the limiting rib.

[0053] Optionally, both ends of the limiting rib are provided with avoidance recesses 14 , and two adjacent avoidance recesses 14 can be connected by an arc shape, so as to avoid the edge of the seal 30 to a greater extent when the seal 30 is installed into the air path female connector 10 .

[0054] In some optional embodiments, there is an arc transition between the avoidance recess 14 and the end of the limiting rib, so that when the seal 30 is installed into the air path female connector 10, the outer peripheral surface of the seal 30 is in surface contact with the avoidance recess 14, and the outer peripheral surface of the seal 30 will not be damaged.

[0055] According to some optional embodiments, the limiting ribs are extended in an arc shape on the circumference of the gas circuit female connector 10 to achieve an arc connection with the circumferential side wall of the plug end 13 of the gas circuit female connector 10, so that the seal 30 can smoothly enter the gas circuit female connector 10, and the limiting ribs are extended in an arc shape, which increases the strength of the limiting ribs. Exemplarily, the middle part of the limiting ribs is recessed in the direction away from the axis of the gas circuit female connector 10, and the two ends of the limiting ribs transition with the avoidance recess 14 in an arc, so that the seal 30 can smoothly enter the first accommodating cavity 12 of the gas circuit female connector 10, and the outer peripheral surface will not be damaged. At the same time, the shape of the middle part of the limiting ribs is adapted to the shape of the outer peripheral wall of the gas circuit male connector 20 and / or the seal 30. Exemplarily, the shape of the gas circuit male connector 20 is cylindrical, and the shape of the seal 30 is cylindrical, then the shape of the middle part of the limiting ribs is an arc shape that matches the cylindrical shape.

[0056] In some optional embodiments, the shape of the stopper 11 may be a hemisphere, a cuboid, a cube, etc., which is not limited here.

[0057] According to some optional embodiments, the end face of the stop portion 11 facing away from the first accommodating cavity 12 is coplanar with the end face of the plug-in end 13 of the air circuit female connector 10, that is, the end face of the stop portion 11 facing away from the first accommodating cavity 12 is flush with the end face of the plug-in end 13 of the air circuit female connector 10, the air circuit male connector 20 can smoothly enter the second accommodating cavity 36 of the seal 30, and the plug-in end 13 of the air circuit female connector 10 can be sealed and docked with other components.

[0058] In some optional embodiments, the end face of the stopping portion 11 facing away from the first accommodating cavity 12 is lower than the end face of the plug-in end 13 of the air circuit female connector 10, the accommodating space of the first accommodating cavity 12 becomes smaller, and the stopping effect on the sealing member 30 is better.

[0059] According to some optional embodiments, the seal 30 includes a first interference portion 31 arranged in the second accommodating cavity 36 and a second interference portion 32 on the outer peripheral surface of the second accommodating cavity 36, the first interference portion 31 and the second interference portion 32 are axially staggered along the seal 30, and the first interference portion 31 is close to the insertion end 35 of the seal 30.

[0060] In the above embodiment, the first interference portion 31 is an interference protrusion, which extends in a direction close to the axis of the seal 30. Through the setting of the first interference portion 31, the gas circuit male connector 20 can be inserted into the second accommodating cavity 36, and is interference-fitted with the first interference portion 31, thereby ensuring the sealing between the seal 30 and the gas circuit male connector 20. The second interference portion 32 is also an interference protrusion, which extends in a direction away from the axis of the seal 30, and through the second interference portion 32, the seal 30 and the gas circuit female connector 10 are interference-fitted, thereby ensuring the sealing between the seal 30 and the gas circuit female connector 10, and the gas provided by the endoscope host can smoothly enter the second gas circuit channel 37 of the seal 30 along the first gas circuit channel 15 of the gas circuit female connector 10.

[0061] It should be noted that the second interference portion 32 can be in the shape of a closed annular protrusion, a hemisphere, a cylinder, etc., which is not limited here; optionally, multiple second interference portions 32 can be arranged at intervals on the outer circumferential surface of the seal 30 to ensure a sealed connection between the seal 30 and the air circuit female connector 10.

[0062] According to some optional embodiments, the seal 30 also includes a first deformation buffer groove 33, which is arranged along the axial direction of the seal 30, between the first interference portion 31 and the second interference portion 32, and the first deformation buffer groove 33 is arranged adjacent to the second interference portion 32.

[0063] In the above embodiment, the first deformation buffer groove 33 can be arranged on the outer circumferential surface of the seal 30, or on the inner circumferential surface of the seal 30. Since the gas circuit male connector 20 is interference-fitted with the first interference portion 31, the insertion end 35 of the seal 30 will be squeezed during the insertion of the gas circuit male connector 20 into the second accommodating cavity 36 of the seal 30. In this case, the second interference portion 32 is equivalent to a fulcrum, and the seal 30 is folded at the opening away from the insertion end 35, so that the joint portion between the seal 30 and the gas circuit female connector 10 forms a step, which is not conducive to the smooth transmission of the gas in the gas circuit female connector 10 to the seal 30. In this embodiment, a first deformation buffer groove 33 is provided between the first interference portion 31 and the second interference portion 32. The first deformation buffer groove 33 is adjacent to the second interference portion 32 and is close to the first interference portion 31. During the process of inserting the air path female connector 10 into the seal 30, the insertion end 35 of the seal 30 is squeezed and deformed. The deformation can be absorbed in time by the provided first deformation buffer groove 33, thereby preventing the seal 30 from shrinking at the opening away from the insertion end 35.

[0064] According to some optional embodiments, the seal 30 further includes a second deformation buffer groove 34, the first deformation buffer groove 33 and the second deformation buffer groove 34 are distributed along the axial direction of the seal 30, and the first deformation buffer groove 33 and the second deformation buffer groove 34 define a second interference portion 32. In the above embodiment, the second deformation buffer groove 34 is arranged on the other side of the second interference portion 32 away from the insertion end 35 of the seal 30. During the process of inserting the gas circuit female connector 10 into the seal 30, the insertion end 35 of the seal 30 is squeezed and deformed. By setting the second deformation buffer groove 34, it is possible to prevent the deformation from continuing to be transmitted to the other end of the seal 30 through the second interference portion 32, thereby ensuring smooth transmission of gas from the gas circuit female connector 10.

[0065] In some optional embodiments, the height of the second interference portion 32 along the radial direction of the seal 30 is greater than the height of the outer circumferential surface of the seal 30 .

[0066] In some optional embodiments, the first deformation buffer groove 33 and the second deformation buffer groove 34 can be arranged on the outer surface of the seal 30; in some optional embodiments, the first deformation buffer groove 33 and the second deformation buffer groove 34 can also be arranged on the inner surface of the seal 30, which is not limited here.

[0067] A second aspect of the present application provides an endoscope host, comprising the above-mentioned gas path connection assembly.

[0068] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0069] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A gas path connection assembly for an endoscope host, characterized in that: include: An air circuit female connector (10), the air circuit female connector (10) being mounted on an endoscope main unit, and a stopper (11) being provided at a plug-in end (13) of the air circuit female connector (10); A sealing member (30) is installed in a first accommodating cavity (12) of the gas circuit female connector (10), and in the plugging direction of the gas circuit female connector (10), the stopper (11) and the sealing member (30) are limitedly matched to keep the sealing member (30) in the gas circuit female connector (10); the gas circuit male connector (20) can be inserted into the sealing member (30) to achieve connection with the gas circuit female connector (10).

2. The gas path connection assembly according to claim 1, characterized in that: The gas circuit female connector (10) comprises a stopper (11), the stopper (11) is a closed annular structure, and the stopper (11) is arranged around the circumference of the gas circuit female connector (10); or, The gas circuit female connector (10) comprises at least two stopper portions (11), and the at least two stopper portions (11) are distributed at intervals along the circumference of the gas circuit female connector (10).

3. The gas path connection assembly according to claim 2, characterized in that: When the gas circuit female connector (10) comprises at least two stop portions (11), the stop portions (11) are limit ribs, and the limit ribs are distributed along the circumference of the gas circuit female connector (10) at the plug end (13).

4. The gas path connection assembly according to claim 3, characterized in that: In the circumferential direction of the gas path female connector (10), at least one end of the limiting rib is provided with an avoidance recess (14), and the avoidance recess (14) is used to avoid the edge of the sealing member (30) when the sealing member (30) is installed into the gas path female connector (10).

5. The gas path connection assembly according to claim 3, characterized in that: In the circumferential direction of the gas path female connector (10), the limiting ribs are extended in an arc shape.

6. The gas circuit connection assembly according to claim 1, characterized in that: The end surface of the stopper (11) facing away from the first accommodating cavity (12) is arranged coplanar with the end surface of the plug end (13) of the gas circuit female connector (10).

7. The gas path connection assembly according to claim 1, characterized in that: The sealing member (30) comprises a first interference portion (31) arranged in a second accommodating cavity (36) and a second interference portion (32) on an outer peripheral surface of the second accommodating cavity (36); the first interference portion (31) and the second interference portion (32) are staggered along the axial direction of the sealing member (30), and the first interference portion (31) is close to an insertion end (35) of the sealing member (30).

8. The gas path connection assembly according to claim 7, characterized in that: The sealing member (30) further comprises a first deformation buffer groove (33), wherein the first deformation buffer groove (33) is arranged along the axial direction of the sealing member (30), the first deformation buffer groove (33) is arranged between the first interference portion (31) and the second interference portion (32), and the first deformation buffer groove (33) is arranged adjacent to the second interference portion (32).

9. The gas path connection assembly according to claim 8, characterized in that: The sealing member (30) further comprises a second deformation buffer groove (34), wherein the first deformation buffer groove (33) and the second deformation buffer groove (34) are distributed along the axial direction of the sealing member (30), and the first deformation buffer groove (33) and the second deformation buffer groove (34) define the second interference portion (32).

10. An endoscope host, characterized in that: It comprises a gas path connection assembly as described in any one of claims 1 to 9.

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