Endoscope cannula sealing member, endoscope, and endoscopic assembly

Abstract

The present application discloses an endoscope cannula sealing member, an endoscope, and an endoscopic assembly, and belongs to the technical field of endoscopes. The endoscope cannula sealing member comprises a main body portion, wherein the main body portion is configured to be sleeved outside a catheter, the main body portion is provided, in an axial direction thereof, with a first end configured to be connected to an operating handle, at least part of the main body portion is configured to be capable of being inserted into a tubular member, and a first gap is formed between the main body portion and the inner tube wall of the tubular member; and a sealing portion, wherein the sealing portion is annularly arranged on the main body portion, the sealing portion is configured to be capable of blocking the first gap and abutting against the inner wall of the tubular member, a second gap is formed between the sealing portion and the first end in the axial direction of the main body portion, and at least part of the second gap is configured to be between the operating handle and the sealing portion. In the present application, the sealing portion forms a seal between the tubular member and the catheter and prevents the detachment of the catheter from the tubular member. Moreover, the arrangement of the second gap is conducive to improving the stability of the connection between the tubular member and the catheter, and reducing the risk of the tubular member being detached from the catheter.

Description

An endoscope cannula seal, an endoscope, and an endoscope assembly.

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202520172365.6, filed on January 24, 2025, entitled "An Endoscopic Cannula Sealing Component, Endoscope and Endoscopic Assembly", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of endoscope technology, specifically relating to an endoscope cannula seal, an endoscope, and an endoscope assembly. Background Technology

[0004] Electronic endoscopes are widely used in various departments such as respiratory medicine, gastroenterology, urology, and otolaryngology. They are mainly used to screen for organ diseases and to perform related interventions to carry out endoscopic surgery.

[0005] In the respiratory intensive care unit, endotracheal intubation is performed under visual monitoring, guiding the tube to the appropriate position. Sometimes, ventilation and oxygenation are required during the procedure, necessitating a tight seal between the bronchoscope's tubing and the endotracheal tube connector to prevent air leakage. Simultaneously, the endotracheal tube needs to move along with the bronchoscope throughout the procedure under full visual guidance to avoid airway damage. To improve the stability of the synchronized movement of the endotracheal tube and bronchoscope, it is essential to ensure both a tight seal between the tubing and the connector, and to enhance the stability of their connection.

[0006] Application content

[0007] This application provides an endoscope cannula seal to solve the above-mentioned technical problems.

[0008] Technical solution: An endoscopic cannulation sealing component according to an embodiment of this application is configured to connect the operating handle of an endoscope and seal the connecting tube and the catheter of the endoscope, comprising:

[0009] The main body is configured to be sleeved on the outside of the conduit, and the main body has a first end in its own axial direction configured to connect to the operating handle. At least a portion of the main body is configured to be able to be inserted into the tube, and a first gap exists between the main body and the inner wall of the tube.

[0010] A sealing portion is provided around the main body portion and is configured to block the first gap and abut against the inner wall of the pipe fitting. The sealing portion and the first end have a second gap in the axial direction of the main body portion, at least a portion of the second gap being configured to be spaced between the operating handle and the sealing portion.

[0011] In some embodiments, the sealing portion is configured to undergo elastic deformation when the body portion is inserted into the pipe to abut against the inner wall of the pipe and seal the first gap.

[0012] In some embodiments, the endoscopic cannula seal further includes a limiting portion, the limiting portion being circumferentially disposed around the body portion and located between the first end and the sealing portion, a third gap being present between the limiting portion and the sealing portion, and the limiting portion being configured to abut against the operating handle along the axial direction of the body portion when the operating handle is connected to the body portion.

[0013] In some embodiments, the sealing portion includes a plurality of sealing sub-parts, the main body has an axis, the plurality of sealing sub-parts are circumferentially disposed around the axis, and at least partially adjacent sealing sub-parts have a fourth gap in the direction surrounding the axis, the plurality of sealing sub-parts being configured to elastically deform when the main body is inserted into the tube to fill the fourth gap and seal the first gap.

[0014] In some embodiments, the main body has a second end in its own axial direction that is opposite to the first end, and a first deformation cavity and a first opening communicating with the first deformation cavity are formed between the sealing sub-part and the main body, the first opening facing the second end.

[0015] In some embodiments, the extending directions of the plurality of sealing sub-parts intersect or are parallel to the extending direction of the axis.

[0016] In some embodiments, the plurality of sealing sub-parts extend in a spiral shape about the axis.

[0017] In some embodiments, a plurality of sealing sub-parts are provided in multiple groups, the multiple groups of sealing sub-parts are arranged at intervals along the axial direction of the main body, and each group of sealing sub-parts is circumferentially arranged around the axis and forms the fourth gap.

[0018] In some embodiments, at least two sets of the fourth gaps of the sealing sub-parts are misaligned in the axial direction of the main body.

[0019] In some embodiments, a second deformable cavity is formed between the sealing portion and the main body portion, the main body portion having an axis, and the second deformable cavity being disposed around the axis.

[0020] In some embodiments, the endoscopic cannula seal further includes a limiting portion, the limiting portion being circumferentially disposed around the body portion and located between the first end and the sealing portion, a third gap being present between the limiting portion and the sealing portion, and the limiting portion being configured to abut against the operating handle along the axial direction of the body portion when the operating handle is connected to the body portion.

[0021] In some embodiments, the sealing portion has a friction portion on its outer surface opposite to the main body portion.

[0022] In some embodiments, the friction portion is provided as a groove, and multiple grooves are provided, which are distributed at intervals around the axis.

[0023] In some embodiments, a second opening is formed between the sealing portion and the main body portion, the second opening communicating with the second deformable cavity, and the second opening facing the first end.

[0024] In some embodiments, the main body has a second end in its own axial direction that is opposite to the first end. In the axial direction of the main body, the sealing part has a fixed end and a movable end that are disposed opposite to each other. The fixed end is close to the second end. The fixed end is fixedly connected to the main body, and a second opening is formed between the movable end and the main body.

[0025] The endoscopic cannula seal further includes a constraint portion, which is circumferentially disposed around the axis of the main body. A limiting ring cavity and an inlet communicating with the limiting ring cavity are formed between the constraint portion and the main body. The inlet allows the movable end to be inserted into the limiting ring cavity, and the limiting ring cavity is configured to allow the movable end to move when the seal is subjected to external force.

[0026] In some embodiments, the main body has a second end in its own axial direction that is opposite to the first end, and a second opening is formed between the sealing part and the main body, the second opening communicating with the second deformable cavity, and the second opening facing the second end.

[0027] In some embodiments, the second opening is provided in multiple ways, and the multiple second openings are circumferentially spaced around the axis.

[0028] In some embodiments, the sealing portion has an abutment surface facing away from the body portion, and in the axial direction of the body portion, at least a portion of the abutment surface increases perpendicularly to the axis from away from the first end to near the first end.

[0029] In some embodiments, the maximum dimension of the main body portion in the direction perpendicular to the axis increases from away from the first end to near the first end.

[0030] In some embodiments, the sealing portion has an abutting surface facing away from the main body portion, and in the axial direction of the main body portion, the distance between the abutting surface and the outer surface of the main body portion first increases and then decreases from away from the first end to near the first end.

[0031] In some embodiments, the sealing portion has a first guide surface oriented axially toward a side away from the first end of the body portion, the first guide surface being configured to guide the sealing portion into the first gap.

[0032] In some embodiments, the main body and the sealing portion are integrally formed.

[0033] Accordingly, an endoscope according to the embodiments of this application includes the aforementioned endoscope cannula seal, an operating handle, and a conduit connected to the operating handle. The endoscope cannula seal is sleeved on the conduit, and the endoscope cannula seal is fixedly connected to the operating handle.

[0034] Accordingly, an endoscope assembly according to an embodiment of this application includes the endoscope described above, and also includes a tubing, wherein the endoscope cannula seal is embedded in the tubing and seals the connection between the catheter and the tubing.

[0035] In some embodiments, the main body has a second end in its own axial direction opposite to the first end, the sealing portion and the second end have a fifth gap in the axial direction of the main body, the pipe has a second guide surface toward the second end, the second guide surface is configured to abut the second end, and the fifth gap is configured to be spaced between the sealing portion and the second guide surface in the axial direction of the main body.

[0036] Beneficial Effects: The endoscopic cannula sealing element of this application embodiment includes a main body and a sealing part. The main body is configured to be sleeved on the outside of the catheter, and has a first end configured to connect to an operating handle in its own axial direction. At least a portion of the main body is configured to be able to insert a tube, and a first gap exists between the main body and the inner wall of the tube. The sealing part is annularly disposed on the main body, and is configured to block the first gap and abut against the inner wall of the tube. A second gap exists between the sealing part and the first end in the axial direction of the main body, and at least a portion of the second gap is configured to be spaced between the operating handle and the sealing part. When the operating handle and the catheter are aligned with the tube, and the main body and the sealing part are introduced into the tube, the sealing part blocks the first gap and abuts against the inner wall of the tube, thereby forming a seal between the tube and the catheter and preventing the catheter and the tube from disengaging. Due to the existence of the second gap, during the movement of the operating handle and the catheter, the force exerted on the sealing part along the axial direction of the main body cannot be transmitted to the operating handle, so that the operating handle will not generate an axial force acting on the tube, which is beneficial to improving the connection stability of the tube and the catheter and reducing the risk of the tube and the catheter disengaging.

[0037] The endoscope in this application embodiment includes the endoscopic cannula seal described above. It is understood that the endoscope may have all the technical features and corresponding beneficial effects of the endoscopic cannula seal described above, which will not be repeated here.

[0038] The endoscopic component of this application includes the endoscope described above. It is understood that the endoscope may have all the technical features and corresponding beneficial effects of the endoscope described above, which will not be repeated here. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 is a structural schematic diagram of the endoscope cannula seal from one perspective of Embodiment 1 of this application;

[0041] Figure 2 is a structural schematic diagram of the endoscope cannula seal from another perspective in Embodiment 1 of this application;

[0042] Figure 3 is a schematic diagram of the second end of the endoscope cannula sealing component in Embodiment 1 of this application, viewed from the front.

[0043] Figure 4 is a schematic diagram of the endoscope cannula sealing component viewed from the axis in Embodiment 1 of this application.

[0044] Figure 5 is a cross-sectional view along line AA in Figure 4;

[0045] Figure 6 is a structural schematic diagram of the endoscope cannula sealing component of Embodiment 2 of this application;

[0046] Figure 7 is a schematic diagram of the endoscope cannula sealing component viewed from the axis in Embodiment 2 of this application.

[0047] Figure 8 is a structural schematic diagram of the endoscope cannula sealing component of Embodiment 3 of this application;

[0048] Figure 9 is a schematic diagram of the endoscope cannula sealing component viewed from the axis in Embodiment 3 of this application.

[0049] Figure 10 is a structural schematic diagram of the endoscope cannula sealing component of Embodiment 4 of this application;

[0050] Figure 11 is a schematic diagram of the endoscope cannula seal along the axis in Embodiment 4 of this application;

[0051] Figure 12 is a structural schematic diagram of the endoscope cannula seal of Embodiment 5 of this application from one perspective;

[0052] Figure 13 is a schematic diagram of the endoscope cannula sealing component viewed from the axis in Embodiment 5 of this application.

[0053] Figure 14 is a cross-sectional view along line BB in Figure 13;

[0054] Figure 15 is a structural schematic diagram of the endoscope cannula seal from one perspective of Embodiment 6 of this application;

[0055] Figure 16 is a schematic diagram of the endoscope cannula seal along the axis in Embodiment 6 of this application;

[0056] Figure 17 is a cross-sectional view along line CC in Figure 16;

[0057] Figure 18 is a structural schematic diagram of the endoscope cannula seal of Embodiment 7 of this application from one perspective;

[0058] Figure 19 is a schematic diagram of the endoscope cannula seal along the axis in Embodiment 7 of this application;

[0059] Figure 20 is a cross-sectional view along line DD in Figure 19;

[0060] Figure 21 is a schematic diagram of the endoscope cannula sealing component viewed from the axis in Embodiment 8 of this application.

[0061] Figure 22 is a cross-sectional view along line EE in Figure 21;

[0062] Figure 23 is a structural schematic diagram of the endoscope cannula seal of Embodiment 9 of this application from one perspective;

[0063] Figure 24 is a schematic diagram of the endoscope cannula seal along the axis of Embodiment 9 of this application;

[0064] Figure 25 is a cross-sectional view along line FF in Figure 24;

[0065] Figure 26 is a schematic diagram of the second end of the endoscope cannula sealing component in Embodiment 9 of this application, viewed from the front.

[0066] Figure 27 is a schematic diagram of the endoscope and endotracheal tube in an embodiment of this application;

[0067] Figure 28 is a schematic diagram of the endoscope and endotracheal tube viewed along the axis in an embodiment of this application;

[0068] Figure 29 is a partial cross-sectional view along line GG in Figure 28;

[0069] Reference numerals: 1. Main body; 10. Axis; 11. Perforation; 12. First end; 13. Second end; 14. Second gap; 15. Fifth gap; 2. Sealing part; 20. Sealing sub-part; 200. First deformation cavity; 201. First opening; 21. Fourth gap; 22. Second deformation cavity; 23. Second opening; 24. Friction part; 240. Groove; 25. Fixed end; 26. Movable end; 27. Abutment surface; 28. First guide surface; 3. Limiting part; 30. Third gap; 4. Constraint part; 40. Limiting ring cavity; 41. Inlet; 5. Operating handle; 6. Tube; 7. Endotracheal tube; 70. First gap; 71. Second guide surface. Detailed Implementation

[0070] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0071] In the description of this application, it should be understood that the terms "thickness," "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are configured for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, and "at least one" can mean one, two, or more, unless otherwise explicitly specified.

[0072] In clinical practice, minimally invasive techniques based on electronic endoscopy are widely used in various departments, including respiratory medicine, gastroenterology, urology, and otolaryngology. In respiratory intensive care, endotracheal intubation is performed under visual monitoring, guiding the tube to the appropriate position. Sometimes, ventilation and oxygenation are required during the procedure, necessitating a tight seal between the endoscope's tubing and the endotracheal tube connector to prevent air leakage. Furthermore, when using the handheld handle, the endotracheal tube must move with the endoscope, proceeding under full visual guidance to avoid airway damage. This requires not only ensuring a tight seal between the endotracheal tube and tubing but also improving the stability of their connection.

[0073] In view of the above, and referring to Figures 1 to 29, embodiments of this application provide an endoscope cannula seal, an endoscope, and an endoscope assembly, which are intended to overcome at least one of the above-mentioned technical problems.

[0074] Referring to Figures 1 to 29, an endoscopic cannula seal includes a main body 1 and a sealing part 2. Figures 27 to 29 exemplarily illustrate the cannula, the endoscope's operating handle 5, and the catheter 6. It should be noted that the cannula may include an endotracheal cannula 7 configured to deliver oxygen during endoscope use, or it may be a protective cannula fitted over the outside of the endoscopic cannula seal during product transportation to protect the catheter 6. The following embodiments use the endotracheal cannula 7 as a reference.

[0075] The main body 1 is sleeved on the outside of the catheter 6. The main body 1 has a first end 12 in its own axial direction, which is configured to connect to the operating handle 5. At least a portion of the main body 1 is configured to allow insertion of the endotracheal tube 7. A first gap 70 is formed between the main body 1 and the inner wall of the endotracheal tube 7. A sealing part 2 is annularly disposed around the main body 1. The sealing part 2 is configured to seal the first gap 70 and abut against the inner wall of the endotracheal tube 7. A second gap 14 is formed between the sealing part 2 and the first end 12 in the axial direction of the main body 1. At least a portion of the second gap 14 is configured to be spaced between the operating handle 5 and the sealing part 2.

[0076] It should be noted that the main body 1 has a through hole 11 extending along its own axial direction to facilitate fitting onto the catheter 6. When the operating handle 5 and the catheter 6 are aligned with the endotracheal tube 7, the main body 1 and the sealing part 2 are inserted into the endotracheal tube 7. At this time, the sealing part 2 seals the first gap 70 and abuts against the inner wall of the endotracheal tube 7, thereby forming a seal between the endotracheal tube 7 and the catheter 6 and preventing the catheter 6 from detaching from the endotracheal tube 7. Due to the presence of the second gap 14, during the movement of the operating handle 5 and the catheter 6, the force exerted on the sealing part 2 along the axial direction of the main body 1 cannot be transmitted to the operating handle 5. This prevents the operating handle 5 from generating a counter-force that would otherwise affect the axial direction of the endotracheal tube 7, thus improving the connection stability of the endotracheal tube 7 and the catheter 6 and reducing the risk of detachment between the endotracheal tube 7 and the catheter 6.

[0077] In some embodiments, referring to FIG29, the sealing portion 2 is configured to undergo elastic deformation when the main body 1 is inserted into the endotracheal tube 7, thereby abutting against the inner wall of the endotracheal tube 7 and sealing the first gap 70. In this embodiment, the sealing portion 2 is made of an elastic material. During the insertion of the endotracheal tube 7 into the main body 1, the inner wall of the endotracheal tube 7 compresses the sealing portion 2, thereby forming an interference fit between the sealing portion 2 and the endotracheal tube 7, reducing the possibility of the endotracheal tube 7 loosening when the catheter 6 moves.

[0078] To facilitate understanding of this application, the following exemplary embodiments of various endoscopic cannula seals are shown.

[0079] Example 1:

[0080] Referring to Figures 1 to 5 and Figure 29, the sealing portion 2 includes a plurality of sealing sub-portions 20. The main body 1 has an axis 10, and the plurality of sealing sub-portions 20 are arranged circumferentially around the axis 10. In the direction surrounding the axis 10, at least partially adjacent sealing sub-portions 20 have a fourth gap 21. The plurality of sealing sub-portions 20 are configured to undergo elastic deformation when the endotracheal tube 7 is inserted into the main body 1 to fill the fourth gap 21 and seal the first gap 70.

[0081] In this embodiment, a fourth gap 21 is provided between adjacent sealing sub-parts 20 in the direction surrounding axis 10. Multiple sealing sub-parts 20 can converge when compressed by the inner wall of the endotracheal tube 7, thereby forming a seal between the endotracheal tube 7 and the catheter 6. The interference fit between the sealing sub-parts 20 and the endotracheal tube 7 prevents the endotracheal tube 7 and the catheter 6 from disengaging. The fourth gap 21 provides deformation space for the multiple sealing sub-parts 20, improving the elasticity of the overall sealing part 2.

[0082] In some embodiments, referring to Figures 1 to 5 and Figure 29, the endoscopic cannula seal further includes a limiting portion 3, which is circumferentially disposed around the main body 1 and located between the first end 12 and the sealing portion 2. A third gap 30 is provided between the limiting portion 3 and the sealing portion 2. The limiting portion 3 is configured to abut against the operating handle 5 along the axial direction of the main body 1 when the main body 1 is connected to the operating handle 5. It is understood that in this embodiment, the limiting portion 3 is located within the second gap 14, so the second gap 14 actually includes the third gap 30. The limiting portion 3 facilitates the axial positioning and connection of the main body 1 and the operating handle 5. During the docking of the endotracheal cannula 7, the limiting portion 3 also allows the operator to visually position the sealing sub-part 20 to guide the insertion amount of the endotracheal cannula 7, avoiding over-insertion. The third gap 30 is spaced between each sealing sub-part 20 and the limiting portion 3, avoiding the transmission of force and improving the connection stability of the endotracheal cannula 7 and the catheter 6.

[0083] To further improve the deformation capability of the sealing sub-part 20, in some embodiments, referring to Figures 1, 3, and 5, the main body 1 has a second end 13 facing away from the first end 12 in its own axial direction. A first deformation cavity 200 and a first opening 201 communicating with the first deformation cavity 200 are formed between the sealing sub-part 20 and the main body 1, with the first opening 201 facing the second end 13. Each sealing sub-part 20 adopts an internal hollow structure and is provided with a first opening 201, which further improves the elastic deformation capability under pressure compared to a solid structure sealing sub-part 20, and improves the adaptability of the sealing sub-part 20 to endotracheal tubes 7 of different sizes and specifications.

[0084] In some embodiments, referring to FIG4, the extending directions of the plurality of sealing sub-parts 20 are parallel to the extending direction of the axis 10. Each sealing sub-part 20 has a first guide surface 28, which faces the second end 13 in the axial direction of the main body 1. The first guide surface 28 is configured to guide each sealing sub-part 20 into the first gap 70. At the same time, each sealing sub-part 20 has an abutment surface 27 facing away from the main body 1, and in the axial direction of the main body 1, from the second end 13 to the first end 12, at least a portion of the abutment surface 27 is perpendicularly distanced from the axis 10.

[0085] It is understood that in this embodiment, the vertical distance between the overall contact surface 27 and the axis 10 increases from the second end 13 to the first end 12. The overall structure formed by the connection of the contact surface 27 and the first guide surface 28 is tapered towards the endotracheal tube 7, which facilitates the insertion of the endoscopic tube seal into the endotracheal tube 7 and makes the compressive force of the endotracheal tube 7 on each sealing part 20 increase in an increasing trend. This allows for flexible adjustment of the length of the sealing part 20 inserted into the endotracheal tube 7, improving the compatibility of the endoscopic tube seal with endotracheal tubes 7 of different sizes and specifications.

[0086] Furthermore, in some embodiments, referring to FIG5, the maximum dimension of the main body 1 in the direction perpendicular to the axis 10 increases from the second end 13 to the first end 12. That is, when the maximum dimension of the main body 1 in the direction perpendicular to the axis 10 is set to increase from the second end 13 to the first end 12, and the dimension of the sealing sub-part 20 in the direction perpendicular to the axis 10 remains unchanged, the vertical distance between the overall contact surface 27 and the axis 10 can still increase from the second end 13 to the first end 12 by relying on the gradually changing size of the main body 1.

[0087] Example 2:

[0088] Referring to Figures 6 and 7, the difference from Embodiment 1 is that the plurality of sealing sub-parts 20 extend spirally around the axis 10. The fourth gap 21 formed between adjacent sealing sub-parts 20 also extends spirally. After the plurality of sealing sub-parts 20 are inserted into the endotracheal tube 7, they can also be brought together by the compression of the inner wall of the endotracheal tube 7, so as to seal the endotracheal tube 7 and the catheter 6 and prevent the endotracheal tube 7 and the catheter 6 from disengaging.

[0089] Example 3:

[0090] Referring to Figures 8 and 9, the difference from Embodiment 1 is that the extending directions of the plurality of sealing sub-parts 20 intersect the extending direction of the axis 10. This embodiment shows that each sealing sub-part 20 extends in an arc shape, unlike spiral extensions or extensions along the axial direction of the main body 1. The respective fourth gaps 21 are spaced apart around the axis 10. In other embodiments, the plurality of sealing sub-parts 20 may also be configured with other shapes, as long as they can achieve elastic deformation and fill adjacent fourth gaps 21; these will not be elaborated upon here.

[0091] Example 4:

[0092] Referring to Figures 10 and 11, the difference from Embodiment 1 is that multiple sets of sealing sub-parts 20 are provided, and the multiple sets of sealing sub-parts 20 are arranged at intervals along the axial direction of the main body 1. Each set of sealing sub-parts 20 is arranged circumferentially around the axis 10 and forms a fourth gap 21. It can be understood that after the multiple sets of sealing sub-parts 20 are inserted into the endotracheal tube 7, the inner wall of the endotracheal tube 7 compresses each set of sealing sub-parts 20, which can cause the sets of sealing sub-parts 20 to converge to form a ring structure, thereby sealing the endotracheal tube 7 and the catheter 6 and preventing the endotracheal tube 7 and the catheter 6 from separating. As the number of sets of sealing sub-parts 20 increases, the contact area between the overall sealing part 2 and the inner wall of the endotracheal tube 7 can be increased, which is beneficial to improving the connection stability of the overall sealing part 2 and the endotracheal tube 7. This embodiment only shows three sets of sealing sub-parts 20 as an example. In other embodiments, the number of sets of sealing sub-parts 20 can be flexibly increased or decreased as needed, which will not be described in detail here.

[0093] In some embodiments, referring to Figures 10 and 11, at least two sets of fourth gaps 21 of sealing sub-parts 20 are misaligned in the axial direction of the main body 1. In this embodiment, the fourth gaps 21 of adjacent sets of sealing sub-parts 20 are misaligned, thereby further improving the sealing effect of each set of sealing sub-parts 20 after connecting to the endotracheal tube 7 and reducing the risk of air leakage.

[0094] Example 5:

[0095] Referring to Figures 12 to 14, the difference from Embodiment 1 is that the sealing part 2 is a one-piece structure, and a second deformation cavity 22 is formed between the sealing part 2 and the main body 1. The second deformation cavity 22 is arranged around the axis 10. The second deformation cavity 22 can be filled with air or liquid as an elastic medium. The goal is to ensure that the overall sealing part 2 can be press-fitted with the endotracheal tube 7. Furthermore, in other embodiments, the sealing part 2 may also be a solid structure.

[0096] In some embodiments, referring to Figures 12 to 14, the sealing portion 2 has an abutment surface 27 facing away from the main body portion 1. Along the axial direction of the main body portion 1, from the second end 13 to the first end 12, the distance between the abutment surface 27 and the outer surface of the main body portion 1 first increases and then decreases. This embodiment exemplarily shows that the sealing portion 2 protrudes in the middle portion along the axial direction of the main body portion 1, while both ends converge to the main body portion 1. The dimension of the abutment surface 27 in the direction perpendicular to the axis 10 is sufficient to allow for an interference fit with the endotracheal tube 7 and to seal the catheter 6 and the endotracheal tube 7.

[0097] It should be noted that, referring to Figures 13 and 14, in this embodiment, the aforementioned third gap 30 is formed between the sealing part 2 and the limiting part 3. That is, the gap between the abutting surface 27 and the limiting part 3 creates an effect of breaking the transmission of force. In other embodiments, the abutting surface 27 may also extend toward the limiting part 3 until it is substantially parallel to the extension direction of the main body 1. In this case, the portion of the abutting surface 27 that extends substantially parallel to the main body 1 and contacts the limiting part 3 can also be regarded as part of the main body 1, which can similarly reduce the force transmitted between the abutting surface 27 and the limiting part 3.

[0098] Example 6:

[0099] Referring to Figures 15 to 17, the difference from Embodiment 5 is that the sealing part 2 has a friction part 24 on its outer surface opposite to the main body 1. The friction part 24 helps to further enhance the frictional force after the sealing part 2 and the endotracheal tube 7 come into contact, thereby improving the connection stability between the sealing part 2 and the endotracheal tube 7. The friction part 24 can be an annular groove or a multi-segmented groove arranged around the axis 10. For example, in this embodiment, the friction part 24 is a groove 240, and there are multiple grooves 240, which are spaced apart around the axis 10. Compared with the use of a raised structure for the friction part 24, the opening edge of the groove 240 can increase the friction on the endotracheal tube 7 and avoid the formation of a gap between it and the inner wall of the endotracheal tube 7.

[0100] It should be noted that, referring to Figures 16 and 17, in this embodiment, the aforementioned third gap 30 is formed between the sealing part 2 and the limiting part 3. Similar to Embodiment 5, the gap between the abutting surface 27 and the limiting part 3 creates an effect of breaking the force transmission. In other embodiments, the abutting surface 27 may also extend toward the limiting part 3 until it is substantially parallel to the extension direction of the main body 1. In this case, the portion of the abutting surface 27 that extends substantially parallel to the main body 1 and contacts the limiting part 3 can also be regarded as part of the main body 1, which can similarly reduce the force transmitted between the abutting surface 27 and the limiting part 3.

[0101] Example 7:

[0102] Referring to Figures 18 to 20, the difference from Embodiment 5 is that, in the axial direction of the main body 1, the sealing part 2 has a fixed end 25 and a movable end 26 disposed opposite to each other. The fixed end 25 is close to the second end 13 and is fixedly connected to the main body 1. A second opening 23 is formed between the movable end 26 and the main body 1. The second opening 23 communicates with the second deformable cavity 22 and faces the first end 12. The second opening 23 helps to further improve the deformability of the overall sealing part 2 and improve the compatibility with endotracheal tubes 7 of different sizes and specifications.

[0103] Example 8:

[0104] Referring to Figures 21 and 22, the difference from Embodiment 7 is that the endoscopic cannula seal further includes a restraint portion 4, which is circumferentially disposed around the axis 10 of the main body 1. A limiting ring cavity 40 and an inlet 41 communicating with the limiting ring cavity 40 are formed between the restraint portion 4 and the main body 1. The inlet 41 allows the movable end 26 to be inserted into the limiting ring cavity 40, and the limiting ring cavity 40 is configured to allow the movable end 26 to move when the seal 2 is subjected to external force. The restraint portion 4 is located in the region of the third gap 30 and is spaced apart from the limiting portion 3. The restraint portion 4 further restricts the movable end 26 to move within the limiting ring cavity 40. After using the catheter 6 and the endotracheal tube 7, the endoscopic cannula seal is pulled out of the endotracheal tube 7. The restraint portion 4 helps to reduce the risk of the movable end 26 of the seal 2 being folded and damaged under the pull-out force.

[0105] Example 9:

[0106] Referring to Figures 23 to 26, the difference from Embodiment 5 is that the second opening 23 faces the second end 13. This also improves the deformability of the sealing part 2. In this embodiment, multiple second openings 23 are provided as an example, distributed circumferentially around the axis 10. It is understood that the spaced distribution of multiple second openings 23 helps prevent the sealing part 2 from completely detaching from the main body 1 on the side facing the second end 13, thus avoiding the problem of the entire sealing part 2 folding over during the insertion of the endotracheal tube 7.

[0107] It should be noted that, for ease of manufacturing, the main body 1 and the sealing part 2 are integrally formed in the above embodiments. In addition, the limiting part 3 and the restraining part 4 can also be integrally formed with the main body 1, which will not be described in detail here.

[0108] Accordingly, referring to Figures 27 to 29, an endoscope includes the aforementioned endoscope cannula seal, an operating handle 5, and a conduit 6 connected to the operating handle 5. The endoscope cannula seal is fitted onto the conduit 6 and is fixedly connected to the operating handle 5. This endoscope can possess all the technical features and effects of the aforementioned endoscope cannula seal, which will not be elaborated further here.

[0109] Accordingly, referring to Figures 27 to 29, an endoscope assembly includes the aforementioned endoscope and an endotracheal cannula 7. An endoscope-cannula seal is embedded in the endotracheal cannula 7 and seals the connection between the catheter 6 and the endotracheal cannula 7. This endoscope assembly can possess all the technical features and effects of the aforementioned endoscope and endoscope-cannula seal, which will not be elaborated further here.

[0110] In some embodiments, referring to FIG29, this embodiment illustrates a connection structure between an endotracheal tube 7 and an endoscopic cannula seal. The sealing portion 2 and the second end 13 have a fifth gap 15 in the axial direction of the main body 1. The endotracheal tube 7 has a second guide surface 71 facing the second end 13, which abuts against the second end 13. The fifth gap 15 is spaced axially between the sealing portion 2 and the second guide surface 71. The second guide surface 71 is tapered in the direction away from the first end 12. By providing the fifth gap 15, a clearance is created for the second end 13 of the main body 1, which helps to reduce the transmission of axial forces between the sealing portion 2 and the endotracheal tube 7, improves the connection stability of the endotracheal tube 7 and the catheter 6, and reduces the risk of detachment between the endotracheal tube 7 and the catheter 6.

[0111] The above provides a detailed description of an endoscopic cannula sealing element, endoscope, and endoscopic assembly provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only configured to help understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application. Industrial applicability

[0112] In summary, this application provides an endoscopic cannulation sealing element, an endoscope, and an endoscope assembly. The sealing part forms a seal between the fitting and the catheter and restricts the catheter from detaching from the fitting. At the same time, the provided second gap helps to improve the connection stability of the fitting and the catheter and reduce the risk of the fitting and the catheter detaching from each other.

Claims

1. An endoscope cannula seal configured to connect an operating handle (5) of an endoscope and to seal a connecting tube and a catheter (6) of the endoscope, characterized in that include: The main body (1) is configured to be sleeved on the outside of the conduit (6), and the main body (1) has a first end (12) configured to connect the operating handle (5) in its own axial direction. At least a portion of the main body (1) is configured to be able to be inserted into the tube, and there is a first gap (70) between the main body (1) and the inner wall of the tube. A sealing part (2) is circumferentially disposed around the main body (1) and is configured to block the first gap (70) and abut against the inner wall of the pipe fitting. The sealing part (2) and the first end (12) have a second gap (14) in the axial direction of the main body (1). At least a portion of the second gap (14) is configured to be spaced between the operating handle (5) and the sealing part (2).

2. The endoscopic cannula sealing element according to claim 1, characterized in that, The sealing part (2) is configured to undergo elastic deformation when the main body (1) is inserted into the pipe to abut against the inner wall of the pipe and seal the first gap (70).

3. The endoscopic cannula sealing element according to claim 2, characterized in that, The endoscope cannula seal also includes a limiting part (3), which is circumferentially disposed around the main body (1) and located between the first end (12) and the sealing part (2). A third gap (30) is formed between the limiting part (3) and the sealing part (2). The limiting part (3) is configured to abut against the operating handle (5) along the axial direction of the main body (1) when the operating handle (5) is connected to the main body (1).

4. The endoscopic cannula seal according to claim 2 or 3, characterized in that, The sealing portion (2) includes a plurality of sealing sub-parts (20), the main body portion (1) has an axis (10), the plurality of sealing sub-parts (20) are arranged circumferentially around the axis (10), and in the direction surrounding the axis (10), at least partially adjacent sealing sub-parts (20) have a fourth gap (21), the plurality of sealing sub-parts (20) are configured to produce elastic deformation when the main body portion (1) is inserted into the pipe to fill the fourth gap (21) and seal the first gap (70).

5. The endoscopic cannula sealing element according to claim 4, characterized in that, The main body (1) has a second end (13) facing away from the first end (12) in its own axial direction. A first deformation cavity (200) and a first opening (201) communicating with the first deformation cavity (200) are formed between the sealing sub-part (20) and the main body (1). The first opening (201) faces the second end (13).

6. The endoscopic cannula seal according to claim 4 or 5, characterized in that, The extension directions of the plurality of sealing sub-parts (20) intersect or are parallel to the extension direction of the axis (10).

7. The endoscopic cannula seal according to any one of claims 4 to 6, characterized in that, The plurality of the sealing sub-parts (20) extend in a spiral shape around the axis (10).

8. The endoscopic cannula seal according to any one of claims 4 to 7, characterized in that, Multiple sealing sub-parts (20) are provided in multiple groups, and the multiple groups of sealing sub-parts (20) are arranged at intervals along the axial direction of the main body (1), and each group of sealing sub-parts (20) is arranged circumferentially around the axis (10) and forms the fourth gap (21).

9. The endoscopic cannula sealing element according to claim 8, characterized in that, In the axial direction of the main body (1), the fourth gaps (21) of at least two sets of the sealing sub-parts (20) are misaligned with each other.

10. The endoscopic cannula seal according to any one of claims 2 to 9, characterized in that, A second deformation cavity (22) is formed between the sealing part (2) and the main body part (1), the main body part (1) has an axis (10), and the second deformation cavity (22) is arranged around the axis (10).

11. The endoscopic cannula seal according to claim 10, characterized in that, The endoscope cannula seal also includes a limiting part (3), which is circumferentially disposed around the main body (1) and located between the first end (12) and the sealing part (2). A third gap (30) is formed between the limiting part (3) and the sealing part (2). The limiting part (3) is configured to abut against the operating handle (5) along the axial direction of the main body (1) when the operating handle (5) is connected to the main body (1).

12. The endoscopic cannula seal according to claim 10 or 11, characterized in that, The sealing part (2) has a friction part (24) on its outer surface away from the main body part (1).

13. The endoscopic cannula seal according to claim 12, characterized in that, The friction part (24) is provided as a groove (240), and there are multiple grooves (240) distributed at intervals around the axis (10).

14. The endoscopic cannula seal according to any one of claims 10 to 13, characterized in that, A second opening (23) is also formed between the sealing part (2) and the main body part (1), the second opening (23) communicates with the second deformable cavity (22), and the second opening (23) faces the first end (12).

15. The endoscopic cannula seal according to claim 14, characterized in that, The main body (1) has a second end (13) in its own axial direction that is opposite to the first end (12). In the axial direction of the main body (1), the sealing part (2) has a fixed end (25) and a movable end (26) disposed opposite to each other. The fixed end (25) is close to the second end (13). The fixed end (25) is fixedly connected to the main body (1), and a second opening (23) is formed between the movable end (26) and the main body (1). The endoscope cannula seal also includes a constraint part (4), which is arranged around the axis (10) on the main body part (1). A limiting ring cavity (40) and an inlet (41) communicating with the limiting ring cavity (40) are formed between the constraint part (4) and the main body part (1). The inlet (41) allows the movable end (26) to be inserted into the limiting ring cavity (40), and the limiting ring cavity (40) is configured to allow the movable end (26) to move when the sealing part (2) is squeezed by an external force.

16. The endoscopic cannula seal according to any one of claims 10 to 15, characterized in that, The main body (1) has a second end (13) in its own axial direction that is away from the first end (12). A second opening (23) is also formed between the sealing part (2) and the main body (1). The second opening (23) communicates with the second deformable cavity (22) and the second opening (23) faces the second end (13).

17. The endoscopic cannula seal according to claim 16, characterized in that, The second opening (23) is provided in multiple ways, and the multiple second openings (23) are circumferentially spaced around the axis (10).

18. The endoscopic cannula seal according to any one of claims 1 to 17, characterized in that, The sealing part (2) has an abutting surface (27) facing away from the main body part (1). In the axial direction of the main body part (1), from away from the first end (12) to near the first end (12), at least a portion of the abutting surface (27) and the vertical distance from the axis (10) increase.

19. The endoscopic cannula seal according to any one of claims 1 to 18, characterized in that, The maximum dimension of the main body (1) in the direction perpendicular to the axis (10) increases from away from the first end (12) to near the first end (12).

20. The endoscopic cannula seal according to any one of claims 1 to 19, characterized in that, The sealing part (2) has an abutting surface (27) facing away from the main body part (1). In the axial direction of the main body part (1), from away from the first end (12) to near the first end (12), the distance between the abutting surface (27) and the outer surface of the main body part (1) first increases and then decreases.

21. The endoscopic cannula seal according to any one of claims 1 to 20, characterized in that, The sealing part (2) has a first guide surface (28) which is axially oriented toward a side away from the first end (12) of the main body (1), and the first guide surface (28) is configured to guide the sealing part (2) to be inserted into the first gap (70).

22. The endoscopic cannula seal according to any one of claims 1 to 21, characterized in that, The main body (1) and the sealing part (2) are integrally formed.

23. An endoscope, characterized by The device includes an endoscopic cannula seal as described in any one of claims 1 to 22, and further includes an operating handle (5) and a conduit (6) connected to the operating handle (5), wherein the endoscopic cannula seal is sleeved on the conduit (6) and the endoscopic cannula seal is fixedly connected to the operating handle (5).

24. An endoscopic assembly comprising: The endoscope as described in claim 23 is further comprising a tubing, wherein the endoscope cannula seal is embedded in the tubing and seals the connection between the catheter (6) and the tubing.

25. The endoscopic assembly according to claim 24, characterized in that, The main body (1) has a second end (13) facing away from the first end (12) in its own axial direction. The sealing part (2) and the second end (13) have a fifth gap (15) in the axial direction of the main body (1). The pipe has a second guide surface (71) facing the second end (13). The second guide surface (71) is configured to abut against the second end (13), and the fifth gap (15) is configured to be spaced between the sealing part (2) and the second guide surface (71) along the axial direction of the main body (1).

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