Endoscope intubation sealing element and endoscope

Abstract

The utility model discloses an endoscope cannula sealing piece and an endoscope, and belongs to the technical field of endoscopes, the endoscope cannula sealing piece comprises a main body part, the main body part is provided with an axis, the main body part is used for being connected with a catheter, at least part of the main body part is configured to be capable of being inserted into a trachea cannula, and a gap is formed between the main body part and the inner tube wall of the trachea cannula; the sealing part is annularly arranged on the main body part, and the sealing part is configured to be capable of blocking the gap; the friction part is arranged on the main body part, and at least part of the friction part is configured to be capable of abutting against the inner wall of the trachea cannula. The catheter and the trachea cannula are connected in a sealed mode through the sealing part, leakage is avoided when oxygen is conveyed by the trachea cannula, meanwhile, the friction part abuts against the trachea cannula in the gap to form certain friction force, and therefore synchronous mobility of the catheter and the trachea cannula is kept.

Description

Technical Field

[0001] The present application belongs to the technical field of endoscopes, and in particular relates to an endoscope cannula seal and an endoscope. Background Art

[0002] At present, minimally invasive technology based on electronic endoscopes is widely used in clinical practice in many departments such as respiratory medicine, gastroenterology, urology, and otolaryngology. It is mainly used to screen organ lesions and perform related interventions to carry out endoscopic surgery.

[0003] Among them, the respiratory intensive care unit performs tracheal intubation under visual monitoring and guides the intubation to the appropriate position. Ventilation and oxygen supply are sometimes required during the operation, which requires a certain degree of sealing between the bronchoscope catheter and the tracheal intubation joint to avoid air leakage. At the same time, during the operation, the tracheal intubation needs to move with the bronchoscope and move under full visual conditions to avoid damaging the airway. Utility Model Content

[0004] Purpose of the utility model: An embodiment of the present application provides an endoscope cannula seal, aiming to solve the above-mentioned technical problems; another purpose of the embodiment of the present application is to provide an endoscope.

[0005] Technical solution: An endoscope cannula seal described in an embodiment of the present application is used to seal a catheter connecting a bronchoscope and a tracheal cannula, comprising:

[0006] A main body, the main body having an axis, the main body being used to connect the catheter, at least a portion of the main body being configured to be inserted into the endotracheal tube, and a gap being provided between the main body and an inner tube wall of the endotracheal tube;

[0007] A sealing portion, the sealing portion is disposed around the main body portion and is configured to seal the gap;

[0008] The friction part is arranged on the main body, and at least a part of the friction part is configured to abut against the inner wall of the endotracheal tube.

[0009] In some embodiments, the friction portion is configured to generate elastic deformation when the main body is inserted into the endotracheal tube so as to abut against the inner wall of the endotracheal tube.

[0010] In some embodiments, a plurality of the friction parts are provided, and the plurality of the friction parts are circumferentially spaced around the axis.

[0011] In some embodiments, an extension direction of the friction portion intersects or is parallel to an extension direction of the axis.

[0012] In some embodiments, the friction portion extends helically around the axis.

[0013] In some embodiments, the main body has a distal end and a proximal end in the extension direction of the axis;

[0014] The friction portion has a first surface facing away from the main body portion, and a vertical distance between at least a portion of the first surface and the axis increases from the distal end to the proximal end.

[0015] In some embodiments, the maximum dimension of the main body in a direction perpendicular to the axis increases from the distal end to the proximal end;

[0016] The distance between the first surface and the outer surface of the main body increases or is the same from the distal end to the proximal end.

[0017] In some embodiments, the maximum dimension of the main body in a direction perpendicular to the axis is the same from the distal end to the proximal end;

[0018] The distance between the first surface and the outer surface of the main body increases from the distal end to the proximal end.

[0019] In some embodiments, the main body has a distal end and a proximal end in the extension direction of the axis;

[0020] The sealing portion has a first guiding surface, the first guiding surface is arranged toward the distal end, and the first guiding surface is used to guide the sealing portion to be embedded in the gap.

[0021] In some embodiments, the main body has a distal end and a proximal end in the extension direction of the axis;

[0022] The friction portion has a second guide surface, the second guide surface is arranged toward the distal end, and the second guide surface is used to guide the friction portion to be embedded in the gap.

[0023] In some embodiments, a plurality of the sealing portions are provided, and the plurality of the sealing portions are arranged along the extension direction of the axis.

[0024] In some embodiments, the friction portion is connected to the sealing portion;

[0025] And / or, the main body has a distal end and a proximal end in the extending direction of the axis, and at least a part of the friction portion is arranged on a side of the sealing portion close to the distal end.

[0026] In some embodiments, the main body, the sealing portion and the friction portion are integrally formed.

[0027] Correspondingly, an endoscope described in an embodiment of the present application includes the above-mentioned endoscope cannula seal.

[0028] In some embodiments, the endoscope further includes: an operating handle and a catheter connected to the operating handle, the endoscope cannula seal is sleeved on the catheter, and the endoscope cannula seal is fixedly connected to the operating handle.

[0029] Beneficial effect: The endoscope cannula seal of the embodiment of the present application is used for sealing the connection between the catheter and the endotracheal cannula of the bronchoscope, and comprises a main body, a sealing part and a friction part, wherein the main body has an axis, the main body is used for connecting the catheter, at least a part of the main body is configured to be able to insert the endotracheal cannula, and there is a gap between the main body and the inner tube wall of the endotracheal cannula; the sealing part is arranged in an annular manner on the main body, and the sealing part is configured to be able to block the gap; the friction part is arranged on the main body, and at least a part of the friction part is configured to be able to abut the inner wall of the endotracheal cannula; the main body and the sealing part are used to achieve a sealed connection between the catheter and the endotracheal cannula to avoid leakage when oxygen is transported by the endotracheal cannula, and at the same time, the friction part abuts the endotracheal cannula in the gap to form a certain friction force, thereby maintaining the synchronous mobility of the catheter and the endotracheal cannula.

[0030] The endoscope of the embodiment of the present application includes the above-mentioned endoscope cannula seal. It can be understood that the endoscope can have all the technical features and corresponding beneficial effects of the above-mentioned endoscope cannula seal, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 This is a schematic diagram of the structure of the operating handle, catheter and endoscope cannula seal of Example 1 of the present application;

[0033] Figure 2 This is a schematic diagram of the structure of the operating handle, the catheter and the endoscope cannula seal connected to the endotracheal cannula in Example 1 of the present application;

[0034] Figure 3 This is a schematic structural diagram of an endoscope cannula seal according to Embodiment 1 of the present application;

[0035] Figure 4 is a schematic structural diagram of an endoscope cannula seal according to Embodiment 2 of the present application;

[0036] Figure 5 2 is a schematic structural diagram of an endoscope cannula seal viewed along the axis in Example 2 of the present application;

[0037] Figure 6This is a schematic structural diagram of an endoscope cannula seal according to Embodiment 3 of the present application;

[0038] Figure 7 is a structural schematic diagram of an endoscope cannula seal viewed along the axis in Example 3 of the present application;

[0039] Figure numerals: 1. main body; 10. axis; 11. perforation; 12. gap; 13. distal end; 14. proximal end; 2. sealing portion; 20. first guide surface; 3. friction portion; 30. first surface; 31. second guide surface; 4. operating handle; 5. catheter; 6. endotracheal tube. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0041] In the description of the present application, it should be understood that the terms "thickness", "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, and at least one means one, two or more, unless otherwise clearly and specifically defined.

[0042] The applicant noted that minimally invasive technology based on electronic endoscopes is widely used in multiple departments such as respiratory, gastroenterology, urology, and otolaryngology. In the respiratory intensive care unit, endotracheal intubation is performed under visual monitoring to guide the intubation to the appropriate position. Ventilation and oxygen supply are sometimes required during the operation, which requires that the bronchoscope catheter and the endotracheal tube joint have a certain degree of sealing to avoid air leakage. At the same time, during the operation, the endotracheal tube needs to move with the bronchoscope and move in a fully visible state to avoid damage to the airway.

[0043] In the prior art, a soft cone piece is sleeved on the catheter to be plugged with the endotracheal tube through an interference fit. The adaptability to endotracheal tubes of different sizes is poor. In addition, if the soft cone piece is plugged too tightly with the endotracheal tube, the endotracheal tube may be pulled to move when the endotracheal tube is withdrawn, causing damage to the airway. If the soft cone piece is plugged too loosely with the endotracheal tube, poor sealing may occur, resulting in air leakage during oxygen delivery through the endotracheal tube.

[0044] In view of this, combined with Figures 1 to 7 , an embodiment of the present application provides an endoscope cannula seal, aiming to overcome at least one of the above-mentioned technical problems.

[0045] Embodiment 1:

[0046] Reference Figures 1 to 3 , an endoscope cannula seal, used for sealing the catheter 5 and the endotracheal cannula 6 connected to the bronchoscope, comprises a main body 1, a sealing part 2 and a friction part 3, wherein the main body 1 has an axis 10, the main body 1 is used to connect the catheter 5, at least part of the main body 1 is configured to be able to insert the endotracheal cannula 6, and there is a gap 12 between the main body 1 and the inner tube wall of the endotracheal cannula 6; the sealing part 2 is arranged around the main body 1, and the sealing part 2 is configured to be able to block the gap 12; the friction part 3 is arranged on the main body 1, and at least part of the friction part 3 is configured to be able to abut the inner wall of the endotracheal cannula 6.

[0047] It should be noted that in this embodiment, the main body 1 is provided with a through hole 11 along the axis 10 to facilitate sleeve installation on the catheter 5. Corresponding to the inner wall shape of the endotracheal tube 6, the sealing part 2 in this embodiment adopts an annular structure surrounding the main body 1 around the axis 10, and the catheter 5 and the endotracheal tube 6 are sealed and connected through the main body 1 and the sealing part 2 to avoid leakage when the endotracheal tube 6 delivers oxygen. At the same time, the friction part 3 abuts against the endotracheal tube 6 in the gap 12 to form a certain friction force, thereby maintaining the synchronous mobility of the catheter 5 and the endotracheal tube 6.

[0048] Specifically, in some embodiments, referring to Figures 1 to 3 The friction part 3 is configured to produce elastic deformation when the main body 1 is inserted into the endotracheal tube 6, so as to abut against the inner wall of the endotracheal tube 6. That is, in this embodiment, the friction part 3 is made of elastic material. During the process of inserting the main body 1 into the endotracheal tube 6, the inner wall of the endotracheal tube 6 presses the friction part 3 against the main body 1, so that an interference fit is formed between the friction part 3 and the endotracheal tube 6, thereby reducing the possibility of the endotracheal tube 6 being loosened when the catheter 5 moves.

[0049] In order to further improve the synchronous mobility between the endotracheal tube 6 and the catheter 5, refer to Figure 1 and Figure 3In this embodiment, a plurality of friction parts 3 are provided, and the plurality of friction parts 3 are arranged circumferentially at intervals around the axis 10 , and adjacent friction parts 3 are evenly spaced. In addition, the friction parts 3 extend in a spiral shape around the axis 10 .

[0050] It can be understood that in this embodiment, multiple friction parts 3 are designed to be distributed in the shape of teeth on the surface of the main body 1, so as to achieve uniform abutment against the tracheal cannula 6 during the insertion of the main body 1 into the tracheal cannula 6, thereby improving the stability of the connection with the tracheal cannula 6. At the same time, the elastic and sheet-shaped friction part 3 can better adapt to tracheal cannulas 6 of different diameters compared to the solid cone, thereby improving the compatibility of the sealing fit.

[0051] In some embodiments, reference Figures 1 to 3 The main body 1 has a distal end 13 and a proximal end 14 in the extending direction of the axis 10; it can be understood that in this embodiment, Figure 1 For example, the distal end 13 refers to the end away from the operating handle 4 held by a human hand, and the proximal end 14 refers to the end close to the operating handle 4 held by a human hand.

[0052] Reference Figures 1 to 3 The sealing part 2 has a first guide surface 20, which is arranged toward the distal end 13 and is used to guide the sealing part 2 to be embedded in the gap 12. That is, the first guide surface 20 is arranged as a curved surface in this embodiment, and when the sealing part 2 is embedded in the endotracheal tube 6, it can guide the sealing part 2 to align with the endotracheal tube 6 and reduce the resistance during the insertion process.

[0053] Similarly, refer to Figure 3 The friction part 3 has a second guide surface 31, which is arranged toward the distal end 13 and is used to guide the friction part 3 to be embedded in the gap 12. That is, the second guide surface 31 is also arranged as a lake surface in this embodiment, and when the friction part 3 is embedded in the endotracheal cannula 6, it can guide the friction part 3 to align with the endotracheal cannula 6 and reduce the resistance of the insertion process.

[0054] It should be noted that, in the present embodiment, the main body 1 , the sealing part 2 and the friction part 3 are integrally formed, that is, the main body 1 , the sealing part 2 and the friction part 3 can be integrally formed using elastic materials such as elastic silicone.

[0055] In addition, in order to improve the overall structural stability of the sealing part 2 and the plurality of friction parts 3, refer to Figure 1 and Figure 3 The friction part 3 is connected to the sealing part 2. In this embodiment, each friction part 3 is integrally arranged on one side of the sealing part 2 close to the distal end 13. Through the above design, during the insertion of the main body 1 into the endotracheal tube 6, a stable friction force is pre-formed between the friction part 3 and the endotracheal tube 6, and finally the sealing part 2 blocks the gap 12 to form a stable connection.

[0056] The embodiment of the present application also discloses an endoscope, including the above-mentioned endoscope cannula seal. It can be understood that the endoscope can have all the technical features and corresponding beneficial effects of the above-mentioned endoscope cannula seal, which will not be repeated here.

[0057] In some embodiments, reference Figures 1 to 3 The endoscope further includes an operating handle 4 and a catheter 5 connected to the operating handle 4 , the endoscope cannula seal is sleeved on the catheter 5 , and the endoscope cannula seal is fixedly connected to the operating handle 4 .

[0058] It should be noted that, in this embodiment, the operating handle 4 and the catheter 5 are sealed with the endotracheal tube 6 through an elastic endoscope tube seal, which is conducive to achieving a buffered transition from the harder operating handle 4 to the softer catheter 5 and endotracheal tube 6, and is conducive to reducing the problem of collapse at the connection between the catheter 5 and the endotracheal tube 6 when the endotracheal tube 6 is sharply bent.

[0059] Embodiment 2:

[0060] Reference Figure 3 and Figure 4 The difference between this embodiment and embodiment 1 is that the friction portion 3 is arranged as a straight tooth plate structure parallel to the extension direction of the axis 10, the sealing portion 2 is arranged in the middle of the friction portion 3 in its own extension direction, and the friction portion 3 passes through the sealing portion 2.

[0061] It should be noted that, refer to Figure 4 The friction part 3 has a first surface 30 facing away from the main body 1, and the vertical distance between at least part of the first surface 30 and the axis 10 increases from the distal end 13 to the proximal end 14. In this embodiment, taking the increasing vertical distance between the overall first surface 30 and the axis 10 as an example, each friction part 3 is evenly arranged around the axis 10, and the outer contour formed by each first surface 30 around the axis 10 is actually a truncated cone structure, that is, as the main body 1 is gradually inserted into the endotracheal cannula 6, the squeezing force of the endotracheal cannula 6 on the friction part 3 gradually increases. At the same time, the vertical distance between the first surface 30 of the friction part 3 close to the distal end 13 and the axis 10 can be set to be less than or equal to the inner diameter of the endotracheal cannula 6. At this time, it is less difficult for the friction part 3 to be embedded in the endotracheal cannula 6, and the first surface 30 on the proximal end 14 side can also ensure that sufficient friction is formed between the friction part 3 and the endotracheal cannula 6.

[0062] In the above settings, refer to Figure 3 and Figure 4 , you can take the following approach:

[0063] First, the maximum dimension of the main body 1 in the direction perpendicular to the axis 10 increases from the distal end 13 to the proximal end 14, that is, the main body 1 is set to a truncated cone structure, and the outer circle size of the cross section of the part of the main body 1 near the distal end 13 perpendicular to the axis 10 is set smaller than the outer circle size of the cross section of the part of the main body 1 near the proximal end 14 perpendicular to the axis 10. On this basis, in some embodiments, if the friction part 3 is highly consistent, that is, the distance between the first surface 30 and the outer surface of the main body 1 is the same from the distal end 13 to the proximal end 14, when it is set in the main body 1, it needs to fit the inclined outer surface of the main body 1 in the extension direction of the axis 10. In addition, if the distance between the first surface 30 and the outer surface of the main body 1 increases from the distal end 13 to the proximal end 14, the above requirements are also met.

[0064] Secondly, the distance between the first surface 30 and the outer surface of the main body 1 increases from the distal end 13 to the proximal end 14, that is, the friction portion 3 is set to a tooth structure with a gradually changing width in a direction perpendicular to the axis 10. In some embodiments, if the main body 1 is a straight cylindrical structure, that is, the maximum dimension of the main body 1 in a direction perpendicular to the axis 10 is the same from the distal end 13 to the proximal end 14, it is also possible to achieve a truncated cone-shaped structure of the outer contour formed by each first surface 30 surrounding the axis 10.

[0065] The above design makes it easier for the main body 1 and the friction part 3 to be inserted into the endotracheal tube 6 in a smooth and aligned manner, and can flexibly adapt to endotracheal tubes 6 of more diameters, that is, the size of the tube inserted into the endotracheal tube 6 can be increased or decreased as needed to form a suitable friction force. The above two methods are used at the same time in this embodiment, and one of them can also be selected in other embodiments.

[0066] Embodiment 3:

[0067] Reference Figure 6 and Figure 7 , the difference between this embodiment and embodiment 1 is that, although the friction part 3 is extended in a spiral shape around the axis 10, the sealing part 2 is arranged in the middle of the friction part 3 in the extension direction thereof, and the friction part 3 penetrates the sealing part 2. It should be noted here that, in the above arrangement, another reason for satisfying the requirement that at least part of the friction part 3 is arranged on the side of the sealing part 2 close to the distal end 13 is that in order to reduce the resistance of the main body 1 and the friction part 3 at the initial stage of inserting the endotracheal tube 6, the vertical distance between the first surface 30 of the friction part 3 close to the distal end 13 and the axis 10 is smaller than that of the part close to the proximal end 14, and the sealing part 2 needs to adapt to the gradual size of the friction part 3, that is, the sealing part 2 is arranged to be consistent with the size of the friction part 3 at the location. If the sealing part 2 is arranged too close to the distal end 13, the size of the friction part 3 is actually smaller when the endotracheal tube 6 is inserted, and the sealing part 2 is also difficult to achieve a good sealing effect. Therefore, the sealing part 2 is arranged in the middle of the friction part 3 in the extension direction of the axis 10 or on the side away from the distal end 13.

[0068] In addition, in other embodiments, a plurality of sealing parts 2 may be provided (not shown in the figure), and the plurality of sealing parts 2 are arranged along the extension direction of the axis 10. The sealing part 2 also has the function of forming friction with the endotracheal tube 6. Increasing the number of sealing parts 2 can, on the one hand, increase the sealing property of the connection between the catheter 5 and the endotracheal tube 6, i.e., the multiple sealing effect, and on the other hand, can also increase the connection stability between the catheter 5 and the endotracheal tube 6, i.e., further increase the friction contact area.

[0069] The above is a detailed introduction to an endoscope cannula seal and an endoscope provided in the embodiments of the present application, and the principles and implementation methods of the present application are explained by using specific examples. The description of the above embodiments is only used to help understand the technical solution and core ideas of the present application; ordinary technicians in this field should understand that: they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An endoscope cannula seal, used for sealing a catheter (5) connecting a bronchoscope and a tracheal cannula (6), characterized in that: include: A main body (1), the main body (1) having an axis (10), the main body (1) being used to connect the catheter (5), at least a portion of the main body (1) being configured to be inserted into the endotracheal tube (6), and a gap (12) being provided between the main body (1) and the inner tube wall of the endotracheal tube (6); A sealing portion (2), the sealing portion (2) being arranged around the main body (1), and the sealing portion (2) being configured to seal the gap (12); A friction portion (3), wherein the friction portion (3) is arranged on the main body (1), and at least a portion of the friction portion (3) is configured to abut against the inner wall of the endotracheal tube (6).

2. The endoscope cannula seal according to claim 1, characterized in that: The friction portion (3) is configured to generate elastic deformation when the main body (1) is inserted into the endotracheal tube (6) so as to abut against the inner wall of the endotracheal tube (6).

3. The endoscope cannula seal according to claim 1, characterized in that: A plurality of the friction parts (3) are provided, and the plurality of friction parts (3) are arranged at intervals in the circumferential direction around the axis (10).

4. The endoscope cannula seal according to claim 2, characterized in that: The extension direction of the friction portion (3) intersects or is parallel to the extension direction of the axis (10).

5. The endoscope cannula seal according to claim 2, characterized in that: The friction portion (3) extends in a spiral shape around the axis (10).

6. The endoscope cannula seal according to claim 1, characterized in that: The main body (1) has a distal end (13) and a proximal end (14) in the extending direction of the axis (10); The friction portion (3) has a first surface (30) facing away from the main body (1), and the vertical distance between at least a portion of the first surface (30) and the axis (10) increases from the distal end (13) to the proximal end (14).

7. The endoscope cannula seal according to claim 6, characterized in that: The maximum dimension of the main body (1) in a direction perpendicular to the axis (10) increases from the distal end (13) to the proximal end (14); The distance between the first surface (30) and the outer surface of the main body (1) increases gradually or is the same from the distal end (13) to the proximal end (14).

8. The endoscope cannula seal according to claim 6, characterized in that: The maximum dimension of the main body (1) in a direction perpendicular to the axis (10) is the same from the distal end (13) to the proximal end (14); The distance between the first surface (30) and the outer surface of the main body (1) increases from the distal end (13) to the proximal end (14).

9. The endoscope cannula seal according to claim 1, characterized in that: The main body (1) has a distal end (13) and a proximal end (14) in the extending direction of the axis (10); The sealing portion (2) has a first guiding surface (20), the first guiding surface (20) is arranged toward the distal end (13), and the first guiding surface (20) is used to guide the sealing portion (2) to be embedded in the gap (12).

10. The endoscope cannula seal according to claim 1, characterized in that: The main body (1) has a distal end (13) and a proximal end (14) in the extending direction of the axis (10); The friction part (3) has a second guide surface (31), the second guide surface (31) is arranged toward the distal end (13), and the second guide surface (31) is used to guide the friction part (3) to be embedded in the gap (12).

11. The endoscope cannula seal according to claim 1, characterized in that: A plurality of the sealing parts (2) are provided, and the plurality of the sealing parts (2) are arranged along the extension direction of the axis (10).

12. The endoscope cannula seal according to claim 1, characterized in that: The friction part (3) is connected to the sealing part (2); And / or, the main body (1) has a distal end (13) and a proximal end (14) in the extension direction of the axis (10), and at least a portion of the friction portion (3) is arranged on a side of the sealing portion (2) close to the distal end (13).

13. The endoscope cannula seal according to claim 1, characterized in that: The main body (1), the sealing portion (2) and the friction portion (3) are integrally formed.

14. An endoscope, characterized in that: include: An endoscope cannula seal as claimed in any one of claims 1 to 13.

15. The endoscope according to claim 14, characterized in that The endoscope further comprises: An operating handle (4) and a catheter (5) connected to the operating handle (4), the endoscope cannula seal being sleeved on the catheter (5), and the endoscope cannula seal being fixedly connected to the operating handle (4).

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