Negative pressure nozzle mounting structure, endoscope handle, and endoscope

Abstract

The utility model provides a kind of negative pressure mouth mounting structure, endoscope handle and endoscope, belong to endoscope technical field.Negative pressure mouth mounting structure includes negative pressure mouth, handle shell, connecting piece and fastener;Handle shell has the installation hole for negative pressure mouth to pass through, connecting piece is fixed in handle shell inner wall, negative pressure mouth is worn in installation hole, fastener is inserted and fixed between the circumferential side wall of negative pressure mouth and connecting piece, to fix the relative position of negative pressure mouth and connecting piece.The application is inserted between the side wall of negative pressure mouth and connecting piece by fastener, the relative position of negative pressure mouth and connecting piece is fixed, to realize the purpose of fixing negative pressure mouth and handle shell, further strengthen the fixing effect of connecting piece and handle shell cooperation to negative pressure mouth, effectively limit the axial movement of negative pressure mouth, so that the position of negative pressure mouth relative to handle shell remains stable.

Description

Technical Field

[0001] This utility model belongs to the field of endoscope technology, specifically relating to a negative pressure nozzle mounting structure, an endoscope handle, and an endoscope. Background Technology

[0002] Endoscopes, as medical devices, are increasingly widely used in the medical field. An endoscope generally consists of a handle and an insertion section. One end of the insertion section is fixed to the handle, and the other end is equipped with a camera module. The insertion section is inserted into the human body, and the camera module captures images of internal structures and lesions.

[0003] The insertion section is equipped with an instrument channel, through which surgical instruments can be used for surgery, and also for introducing or withdrawing fluids from the body. A negative pressure nozzle is fixed to the handle housing, with one end connected to the instrument channel and the other end used to connect to a suction device. By turning the suction device on and off, fluids can be aspirated from the body in conjunction with the surgical procedure.

[0004] In the existing technology, the negative pressure nozzle and the handle shell are usually glued together, and glue is applied at the joint between the two to enhance the fixing effect. However, in actual use, there is still a risk of delamination between the negative pressure nozzle and the handle shell. Utility Model Content

[0005] The purpose of this application is to provide a negative pressure nozzle mounting structure, an endoscope handle, and an endoscope to solve the aforementioned technical problems existing in the prior art.

[0006] This application is implemented as follows:

[0007] In a first aspect, embodiments of this application provide a negative pressure nozzle mounting structure, including a negative pressure nozzle, a handle housing, a connector, and fasteners; the handle housing has a mounting hole through which the negative pressure nozzle passes, the connector is fixed to the inner wall of the handle housing, the negative pressure nozzle passes through the mounting hole, and the fasteners are inserted and fixed between the circumferential side wall of the negative pressure nozzle and the connector to fix the relative position of the negative pressure nozzle and the connector.

[0008] Secondly, embodiments of this application provide an endoscope handle, including the negative pressure nozzle mounting structure provided in the first aspect embodiment.

[0009] Thirdly, embodiments of this application provide an endoscope, including the endoscope handle provided in the second aspect embodiment.

[0010] The technical solution provided in this application can achieve the following beneficial effects:

[0011] In this application, a mounting hole is provided on the handle housing, and the negative pressure nozzle passes through the mounting hole. The mounting hole is used to initially locate the installation position of the negative pressure nozzle. Fasteners are inserted between the side wall of the negative pressure nozzle and the connector to fix the relative position of the negative pressure nozzle and the connector, thereby achieving the purpose of fixing the negative pressure nozzle to the handle housing and further strengthening the fixing effect of the connector and the handle housing on the negative pressure nozzle. When the negative pressure nozzle has a tendency to move relative to the handle housing, especially when the negative pressure nozzle has a tendency to move along its axial direction, there is a large resistance between the negative pressure nozzle and the fastener, which effectively restricts the movement of the negative pressure nozzle and keeps the position of the negative pressure nozzle relative to the handle housing stable. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of the installation structure provided in some embodiments of this application;

[0014] Figure 2 This is a disassembled schematic diagram of the installation structure provided in some embodiments of this application;

[0015] Figure 3 This application is about Figure 2 Detailed view of point A;

[0016] Figure 4 This is a schematic diagram showing the disassembled handle shell provided in some embodiments of this application;

[0017] Figure 5 This application is about Figure 4 Detailed image of point B;

[0018] Figure 6 This is a schematic diagram of the cooperation between the first housing and the negative pressure nozzle provided in some embodiments of this application;

[0019] Figure 7 This application is about Figure 6 Detailed image of point C;

[0020] Figure 8 This is a schematic diagram of the mating of the first housing and the connector provided in some embodiments of this application;

[0021] Figure 9 This application is about Figure 8 Detailed image of point D;

[0022] Figure 10This is a schematic diagram of the structure of the negative pressure nozzle and adapter provided in some embodiments of this application;

[0023] Figure 11 This is a schematic diagram of the overall structure of an endoscope provided in some embodiments of this application.

[0024] In the diagram: 100-Negative pressure nozzle, 200-Handle housing, 210-Mounting hole, 220-First housing, 230-Second housing, 300-Connector, 310-Connecting protrusion, 320-Reinforcing rib, 330-Limiting component, 400-Fastener, 510-Assembly groove, 520-Assembly hole, 600-Adapter, 700-Insertion part. Detailed Implementation

[0025] The following description provides many different embodiments or examples for implementing various features of the present invention. The elements and arrangements described in the specific examples below are only for concise expression of the present invention and are merely examples, not intended to limit the present invention.

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0028] This application provides a negative pressure nozzle mounting structure that optimizes the connection and fixation between the negative pressure nozzle 100 and the handle shell 200, thereby avoiding the problem of delamination between the negative pressure nozzle 100 and the handle shell 200.

[0029] refer to Figure 2 and Figure 3As shown, the mounting structure provided in this embodiment includes a negative pressure nozzle 100, a handle housing 200, a connector 300, and a fastener 400. The handle housing 200 has a mounting hole 210 through which the negative pressure nozzle 100 passes, and the connector 300 is fixed to the inner wall of the handle housing 200. The negative pressure nozzle 100 passes through the mounting hole 210, with a portion of the nozzle located inside the handle housing 200 and a portion located outside. The fastener 400 is inserted and fixed between the side wall of the negative pressure nozzle 100 and the connector 300 to fix the relative position of the negative pressure nozzle 100 and the connector 300. The fastener 400 is located inside the handle housing 200, and it actually contacts and engages with the circumferential side wall of the portion of the negative pressure nozzle 100 located inside the handle housing 200.

[0030] The mounting hole 210 on the handle housing 200 initially defines the mounting position of the negative pressure nozzle 100, and the fastener 400 located on the handle housing 200 contacts the negative pressure nozzle 100, resulting in two contact areas between the negative pressure nozzle 100 and the handle housing 200. The contact between the negative pressure nozzle 100 and the handle housing 200 includes direct contact and indirect contact. These two contact areas effectively stabilize the relative position between the negative pressure nozzle 100 and the handle housing 200, limiting the tilting of the negative pressure nozzle 100's axis.

[0031] Fastener 400 is inserted between the side wall of negative pressure nozzle 100 and connector 300. By fixing the relative position of negative pressure nozzle 100 and connector 300, the relative position of negative pressure nozzle 100 and handle housing 200 is fixed, strengthening the fixing effect of connector 300 and handle housing 200 on negative pressure nozzle 100. When negative pressure nozzle 100 tends to move relative to handle housing 200, its movement is restricted. For example, when negative pressure nozzle 100 tends to tilt relative to handle housing 200, negative pressure nozzle 100 is restricted by the inner wall of mounting hole 210, connector 300, and fastener 400, preventing it from tilting. When negative pressure nozzle 100 tends to move relative to it along its axial direction, there is significant resistance between negative pressure nozzle 100 and fastener 400, effectively restricting the movement of negative pressure nozzle 100 and maintaining a stable position of negative pressure nozzle 100 relative to handle housing 200.

[0032] Compared to the adhesive fixation in existing technologies, this embodiment utilizes the cooperation of the handle shell 200, the connector 300, and the fastener 400 to create two connection areas between the negative pressure nozzle 100 and the handle shell 200, fixing their relative positions. The fastener 400 is inserted between the negative pressure nozzle 100 and the connector 300, optimizing the fixation effect. The inner walls of the mounting holes 210 of the negative pressure nozzle 100 and the handle shell 200 can be glued together, further optimizing the fixation effect on the negative pressure nozzle 100. Alternatively, the inner walls of the mounting holes 210 of the negative pressure nozzle 100 and the handle shell 200 can be fixed without glue, using the inner walls of the mounting holes 210 and the connector 300 to limit the position of the negative pressure nozzle 100.

[0033] In some embodiments, the connector 300 may be an additional connector 300 provided on the handle housing 200, the connector 300 being protruding relative to the inner wall of the handle housing 200, thereby being adjacent to the negative pressure nozzle 100, so that the fastener 400 can be inserted between the negative pressure nozzle 100 and the handle housing 200. In other embodiments, the connector 300 may also be a part of the handle housing 200, the position of the mounting hole 210 on the handle housing 200 being adjusted so that after the negative pressure nozzle 100 extends into the handle housing 200 through the mounting hole 210, the side wall of the negative pressure nozzle 100 can be close to the inner wall of the handle housing 200, and the fastener 400 is inserted between this part of the inner wall of the handle housing 200 and the negative pressure nozzle 100.

[0034] In some embodiments, reference Figures 2 to 5 As shown, the connector 300 has two connecting protrusions 310, which are located on both sides of the negative pressure nozzle 100 inside the handle housing 200. The fastener 400 is inserted and fixed between the negative pressure nozzle 100 and the connecting protrusions 310 to fix the negative pressure nozzle 100 between the two connecting protrusions 310.

[0035] The connector 300 is a structure that protrudes relative to the inside of the handle housing 200. The two connecting protrusions 310 of the connector 300 are located on both sides of the negative pressure nozzle 100, respectively, which can limit the movement of both sides of the negative pressure nozzle 100, improving the limiting effect. The connecting protrusions 310 protrude relative to the inner wall of the handle housing 200, and their protrusion direction and height can be adjusted according to the position of the mounting hole 210 to accommodate the positions of the negative pressure nozzle 100 and the mounting hole 210.

[0036] The distance between the two connecting protrusions 310 is fixed. Fasteners 400 are inserted between the negative pressure nozzle 100 and the connecting protrusions 310 to further strengthen the force exerted by the connecting protrusions 310 on the negative pressure nozzle 100 and optimize the fixing effect of the connecting protrusions 310 on the negative pressure nozzle 100. The two connecting protrusions 310 are located on both sides of the negative pressure nozzle 100, ensuring that the negative pressure nozzle 100 is subjected to force as evenly as possible.

[0037] In some preferred embodiments, mounting grooves 510 are provided on the surfaces of the connecting protrusion 310 and the negative pressure nozzle 100 that are close to each other. Two mounting grooves 510 are joined to form a mounting hole 520, and the fastener 400 is clamped in the mounting hole 520. The fit between the mounting hole 520 and the fastener 400 can be found in [reference needed]. Figure 2 and Figure 3 As shown. The mounting hole 520 positions the fastener 400 at its specific installation location, so that during the assembly process of the negative pressure nozzle 100, the specific installation position of the negative pressure nozzle 100 on the handle housing 200 can be determined by the cooperation between the mounting hole 520 and the fastener 400, which facilitates the positioning of the negative pressure nozzle 100 and improves the assembly efficiency of the negative pressure nozzle 100.

[0038] The negative pressure nozzle 100 passes through the mounting hole 210. The axes of the mounting hole 210 and the negative pressure nozzle 100 overlap, and the axis of the mounting hole 210 is also equivalent to the axis of the negative pressure nozzle 100. The axis of the assembly hole 520 is set in a different plane from the axis of the mounting hole 210. The two axes being set in a different plane means that the two axes are not parallel, do not overlap, do not intersect, and are not perpendicular. The assembly hole 520 is located on the circumferential sidewall of the negative pressure nozzle 100, and the axis of the negative pressure nozzle 100 is located at its center. Therefore, the axis of the negative pressure nozzle 100 and the axis of the assembly hole 520 will not overlap or be perpendicular in position. Since the two axes are not parallel, the fastener 400 in the assembly hole 520 can effectively restrict the movement of the negative pressure nozzle 100 along its axial direction. This avoids the situation where the fastener 400 in the assembly hole 520 cannot restrict the movement of the negative pressure nozzle 100 when it has a tendency to move along its axial direction, further improving the installation and fixing effect of the negative pressure nozzle 100.

[0039] In some preferred embodiments, reference Figure 3 As shown, the inner wall of the assembly hole 520 is threaded, and the fastener 400 is threaded into the assembly hole 520. The fastener 400 can be a bolt or screw or other connection structure. The fastener 400 is directly threaded into the assembly hole 520, which improves the connection stability between the fastener 400 and the connecting protrusion 310 and the negative pressure nozzle 100.

[0040] In some embodiments, reference Figure 4 and Figure 5As shown, a reinforcing rib 320 is provided on the surface of the connecting protrusion 310 facing away from the mounting groove 510. The reinforcing rib 320 is used to increase the thickness of the area of ​​the connecting protrusion 310 where the mounting groove 510 is located. After the mounting groove 510 is provided, the thickness of the connecting protrusion 310 is reduced, which correspondingly weakens the structural strength of the connecting protrusion 310. Since the fastener 400 is fixed to the mounting groove 510, the connecting protrusion 310 and the fastener 400 exert a significant force. To ensure that the structure of the connecting protrusion 310 is not damaged when the fastener 400 is installed, a reinforcing rib 320 is provided on the surface of the connecting protrusion 310 facing away from the mounting groove 510 to increase the thickness of the area of ​​the connecting protrusion 310 where the mounting groove 510 is located, thereby improving the structural strength of the connecting protrusion 310. The area of ​​the connecting protrusion 310 without the mounting groove 510 does not require the reinforcing rib 320 and does not need to be thickened.

[0041] In some preferred embodiments, reference may be made to Figure 6 and Figure 7 As shown, the reinforcing rib 320 extends axially along the mounting hole 520 until the end of the reinforcing rib 320 abuts against the inner wall of the handle housing 200, and the end of the reinforcing rib 320 is fixed to the inner wall of the handle housing 200.

[0042] The connecting protrusion 310 is part of the connector 300. The connecting protrusion 310 is fixed to the inner wall of the handle housing 200 to stabilize its position. The reinforcing rib 320 is fixed to both the connecting protrusion 310 and the handle housing 200. The reinforcing rib 320 can not only increase the thickness of the connecting protrusion 310 to improve its structural strength, but also further improve the connection stability between the connecting protrusion 310 and the inner wall of the handle housing 200, thereby improving the constraint and limiting effect of the connecting protrusion 310 on the negative pressure nozzle 100 to a certain extent.

[0043] The reinforcing rib 320 extends axially along the mounting hole 520 and extends to the inner wall of the handle housing 200. The area of ​​the connecting protrusion 310 with the mounting groove 510 is thickened to make the overall structure of the connecting protrusion 310 stable.

[0044] In some embodiments, the connecting protrusion 310 may be fixed to the inner wall of the handle housing 200 on only one side. Preferably, the two adjacent sides of the connecting protrusion 310 may be fixed to the inner wall of the handle housing 200, thereby further improving the connection stability between the connecting protrusion 310 and the handle housing 200.

[0045] The handle housing 200 generally includes a first housing 220 and a second housing 230 arranged opposite to each other, as can be seen from [reference]. Figure 2 and Figure 4 As shown, the first housing 220 and the second housing 230 are assembled together along a first direction, which can be referred to as... Figure 2 and Figure 4The direction is indicated by the dashed arrow in the diagram. After the endoscopic devices are assembled into the first housing 220 and the second housing 230, the two housings are then joined together along the first direction to form a complete housing, thus completing the assembly of the handle. The complete handle housing 200 can be referenced. Figure 1 As shown.

[0046] In some preferred embodiments, both the negative pressure nozzle 100 and the connector 300 are mounted on the first housing 220, and the axial direction of the mounting hole 520 is parallel to the first direction, with the opening of the mounting hole 520 exposed on the open side of the first housing 220, as can be seen from [reference needed]. Figure 3 As shown, when assembling the fastener 400, it is easier for the assembler to insert and fix the fastener 400 into the assembly hole 520, providing a large operating space and making the operation easier. Similarly, the negative pressure nozzle 100 and the connector 300 can both be disposed in the second housing 230, with the opening of the assembly hole 520 exposed on the open side of the second housing 230. In the embodiments of this application, the first housing 220 and the second housing 230 are interchangeable.

[0047] The connector 300 is fixed to the inner wall of the handle housing 200, and the connecting protrusion 310, as part of the connector 300, is also fixed to the inner wall of the handle housing 200. The two connecting protrusions 310 are located on both sides of the negative pressure nozzle 100, constraining and limiting its position. The connecting protrusions 310 stabilize their position through their connection with the inner wall of the handle housing 200. In some preferred embodiments, the connector 300 further includes a limiting member 330 connected between the two connecting protrusions 310, thereby connecting the two connecting protrusions 310 into a whole, improving the limiting and constraining effect of the connecting protrusions 310 on the negative pressure nozzle 100, and enhancing the stability of the negative pressure nozzle 100's position.

[0048] Furthermore, the connector 300 includes two limiting members 330, which are located on both sides of the negative pressure nozzle 100 and are both connected between the two connecting protrusions 310, as shown in the reference. Figures 6 to 9 As shown, two connecting protrusions 310 and two limiting members 330 enclose an annular cavity through which the negative pressure nozzle 100 passes. In the arrangement direction of the two limiting members 330, the limiting members 330 are in a limiting fit with the negative pressure nozzle 100.

[0049] The two limiting members 330 serve two purposes: firstly, to connect the two connecting protrusions 310 into a whole, thereby improving the constraint and limiting effect of the connecting protrusions 310 on the negative pressure nozzle 100; secondly, the two limiting members 330 can cooperate with the two connecting protrusions 310 to enclose the negative pressure nozzle 100 within them. The annular cavity formed by the two limiting members 330 and the two limiting protrusions, in conjunction with the mounting hole 210, can further stabilize the position of the negative pressure nozzle 100 and prevent the negative pressure nozzle 100 from tilting or changing.

[0050] In some preferred embodiments, two fasteners 400 may be provided, with each fastener 400 corresponding to a connecting protrusion 310. The two fasteners 400 are located on both sides of the negative pressure nozzle 100 to balance the constraint forces on both sides of the negative pressure nozzle 100 as much as possible.

[0051] Along the axial direction of the mounting hole 210, from the mounting hole 210 to the inside of the handle housing 200, the distance between two adjacent connecting protrusions 310 gradually decreases. The distance between the two connecting protrusions 310 is not constant, but gradually decreases, achieving an interference fit between the connecting protrusion 310 and the negative pressure nozzle 100, further improving the fixing effect of the connecting protrusion 310 on the negative pressure nozzle 100.

[0052] The distance between the two connecting protrusions 310 gradually shortens. In some specific embodiments, the two connecting protrusions 310 may be inclined to each other and approach each other, or the wall thickness of the two connecting protrusions 310 may be gradually increased, thereby shortening the distance between them.

[0053] The mounting structure also includes an adapter 600 located inside the handle housing 200, and the structure of the fastener 400 can be found in [reference]. Figure 10 As shown, the adapter 600 is used to connect the internal tubing of the handle housing 200 to the negative pressure nozzle 100. The tubing connects to the negative pressure nozzle 100, facilitating its suction function. Specifically, part of the adapter 600 is located between the two connecting protrusions 310 and mates with the negative pressure nozzle 100. The negative pressure nozzle 100 occupies only a portion of the space between the two connecting protrusions 310, while the adapter 600 occupies the remaining space. The adapter 600 and the negative pressure nozzle 100 are fixed together with adhesive.

[0054] The adapter 600 and the negative pressure nozzle 100 are fixed together with adhesive. When applying the adhesive, the adhesive is in a flowing state. While waiting for the adhesive to solidify, some of the adhesive can overflow through the gap between the adapter 600 and the negative pressure nozzle 100 toward the connecting protrusion 310, and can also overflow to the fastener 400, thus bonding the fastener 400, the connecting protrusion 310, the negative pressure nozzle 100 and the adapter 600 together, thereby strengthening the fixing effect.

[0055] In actual products, the above method has a particularly good fixing effect on fastener 400. When fastener 400 is selected with a screw structure, fastener 400 may break and become unscrewable during the unscrewing process due to the strong adhesive fixing effect.

[0056] This application also provides an endoscope handle, including the negative pressure nozzle 100 mounting structure provided in any of the above embodiments.

[0057] This application also provides an endoscope, including the endoscope handle provided in any of the above embodiments, which can be referred to... Figure 11 As shown, the insertion part 700 of the endoscope is fixed to the handle. An instrument tube is provided in the insertion part 700. The instrument tube is connected to the negative pressure nozzle 100. The negative pressure nozzle 100 is connected to a negative pressure source. The instrument tube is aspirated according to the needs of the surgery.

[0058] The endoscopes involved in the embodiments of this application may be bronchoscopes, pyeloscopes, esophagoscopes, gastroscopes, colonoscopes, otoscopes, rhinoscopes, oral endoscopes, laryngoscopes, colposcopes, laparoscopes, arthroscopes, etc. The embodiments of this application do not specifically limit the types of endoscopes.

[0059] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0060] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A negative pressure nozzle installation structure, characterized in that, Includes a negative pressure nozzle (100), a handle housing (200), a connector (300), and a fastener (400). The handle housing (200) has a mounting hole (210) through which the negative pressure nozzle (100) passes. The connector (300) is fixed to the inner wall of the handle housing (200). The negative pressure nozzle (100) passes through the mounting hole (210). The fastener (400) is inserted and fixed between the circumferential side wall of the negative pressure nozzle (100) and the connector (300) to fix the relative position of the negative pressure nozzle (100) and the connector (300).

2. The negative pressure nozzle installation structure according to claim 1, characterized in that, The connector (300) has two connecting protrusions (310), which are located on both sides of the negative pressure nozzle (100) inside the handle housing (200). The fastener (400) is inserted and fixed between the negative pressure nozzle (100) and the connecting protrusions (310) to fix the negative pressure nozzle (100) between the two connecting protrusions (310).

3. The negative pressure nozzle installation structure according to claim 2, characterized in that, The surfaces of the connecting protrusion (310) and the negative pressure nozzle (100) that are close to each other are provided with assembly grooves (510). The two assembly grooves (510) are joined together to form an assembly hole (520). The connector (300) is clamped in the assembly hole (520). The axis of the assembly hole (520) is opposite to the axis of the mounting hole (210).

4. The negative pressure nozzle installation structure according to claim 3, characterized in that, The inner wall of the assembly hole (520) is provided with threads, and the connector (300) is threaded into the assembly hole (520).

5. The negative pressure nozzle installation structure according to claim 3, characterized in that, The connecting protrusion (310) has a reinforcing rib (320) on the side surface opposite to the assembly groove (510). The reinforcing rib (320) is used to increase the thickness of the part of the connecting protrusion (310) where the assembly groove (510) is located.

6. The negative pressure nozzle installation structure according to claim 5, characterized in that, The reinforcing rib (320) extends axially along the mounting hole (520) until the end of the reinforcing rib (320) abuts against the inner wall of the handle housing (200), and the end of the reinforcing rib (320) is fixed to the inner wall of the handle housing (200).

7. The negative pressure nozzle installation structure according to claim 3, characterized in that, The handle housing (200) includes a first housing (220) and a second housing (230) arranged opposite to each other. The first housing (220) and the second housing (230) are assembled together along a first direction. The negative pressure nozzle (100) and the connector (300) are both installed on the first housing (220). The axial direction of the assembly hole (520) is parallel to the first direction, and the opening of the assembly hole (520) is exposed on the open side of the first housing (220).

8. The negative pressure nozzle installation structure according to claim 2, characterized in that, The mounting structure also includes an adapter (600) located inside the handle housing (200), part of which is located between the two connecting protrusions (310) and docks with the negative pressure nozzle (100). The adapter (600) is used to connect the internal pipeline of the handle housing (200) to the negative pressure nozzle (100), and the adapter (600) and the negative pressure nozzle (100) are glued together. And / or, in the axial direction of the mounting hole (210), along the direction from the mounting hole (210) to the inside of the handle housing (200), the distance between two adjacent connecting protrusions (310) gradually decreases; And / or, there are two fasteners (400), and the two fasteners (400) are respectively located on both sides of the negative pressure nozzle (100); And / or, the connector (300) further includes two limiting members (330), which are located on both sides of the negative pressure nozzle (100) and are connected between the two connecting protrusions (310). The two connecting protrusions (310) and the two limiting members (330) together form an annular cavity through which the negative pressure nozzle (100) passes. In the arrangement direction of the two limiting members (330), the limiting members (330) are limited and engaged with the negative pressure nozzle (100).

9. An endoscope handle, characterized in that, Includes the negative pressure nozzle mounting structure as described in any one of claims 1-8.

10. An endoscope, characterized in that, Includes the endoscope handle as described in claim 9.

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