Disposable endoscope cannula

Abstract

The utility model discloses a disposable endoscope cannula which comprises a connector, a hose arranged at the end of the connector in a sleeved mode and an endoscope cover connected to the end, away from the connector, of the hose, the connector comprises a cylindrical end and a conical end, the cylindrical end is provided with an end face clamping-in part, the end face clamping-in part is connected with a protruding part arranged on an endoscope connector in a clamped mode, and the end face clamping-in part is connected with the connector. The shape of the end face of the cylindrical end of the connector is complementary with the circumferential shape of the position where the protruding part of the endoscope connector is located so that the endoscope sleeve can be screwed into the endoscope connector. According to the utility model, the interface structure of the sleeve is improved, so that the interface of the sleeve is clamped and fixed on the endoscope joint in a rotating manner, and force is not applied to the outer tube of the endoscope in the whole assembly process, so that the endoscope is reliably protected, and when the endoscope needs to be disassembled, the endoscope only needs to be reversely rotated, the disassembly process is more convenient, and the disassembly efficiency is improved. Operation is convenient, and using performance is good.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a disposable endoscope sleeve. Background Art

[0002] Endoscopes are commonly used inspection instruments in the medical field. They integrate image sensors, optical lenses, light sources, mechanical devices and other components. When used, they enter the human body through natural orifices or artificial openings. Traditionally, the part of the endoscope that is inserted into the human body is stained with body fluids (gastric juice, intestinal fluid, etc.), so it must be strictly cleaned and disinfected after each use before it can be used again. However, multiple disinfections will reduce the service life of the endoscope, and the disinfection process is relatively time-consuming. Therefore, disposable endoscope sleeves have recently appeared. They are fixed to the outer tube of the insertion part of the endoscope before use. After one use, the sleeve can be discarded as medical waste. The endoscope can be used again without disinfection, which improves the utilization rate of the endoscope.

[0003] The structure of a disposable endoscope cannula generally includes an interface, a hose, and a scope cover. When in use, the interface needs to be pressed tightly against the outer tube of the endoscope. When disassembling or assembling, force needs to be applied to the interface, which is inconvenient to operate. In addition, the interface is in direct contact with the outer tube of the endoscope. If the diameter of the outer tube of the endoscope is thin, it is easy to break the glass optical fiber inside the endoscope when force is applied, causing damage to the endoscope. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a disposable endoscope sleeve.

[0005] The utility model provides a technical solution to the above-mentioned technical problems as follows: a disposable endoscope sleeve, which is used to be sleeved on the outside of an endoscope, and the disposable endoscope sleeve includes an interface, a hose sleeved on the end of the interface, and a mirror cover connected to the end of the hose away from the interface, the interface includes a cylindrical end and a conical end, and an end face clip-in portion is provided on the cylindrical end, and the end face clip-in portion is snap-fitted with a protrusion provided on the endoscope connector, and the end face shape of the cylindrical end of the interface is complementary to the circumferential shape of the position of the protrusion of the endoscope connector, so that the endoscope sleeve can be screwed into the endoscope connector.

[0006] Furthermore, a window is provided on the side surface of the cylindrical end, and the window is located in front of the end face clipping portion in the axial direction and is at the same position as the end face clipping portion in the circumferential direction.

[0007] Furthermore, a limiting portion is provided on the inner surface of the interface at a position connected to one of the edges of the window along the circumferential direction, and the limiting portion is used to limit the rotation range of the interface along the circumferential direction.

[0008] Furthermore, a marking structure in the shape of a double arrow is provided at the window.

[0009] Furthermore, there is a gap between the end face of the endoscope connector and the protruding portion, and when the end face snap-in portion is snap-fitted with the protruding portion, it is located in the gap.

[0010] Furthermore, the hose has elasticity, and after the end face snap-in portion is snap-fitted with the protruding portion, the hose is in a stretched state.

[0011] Further, the diameter of the cylindrical end of the interface is greater than the diameter of the conical end of the interface.

[0012] Furthermore, two protruding portions are symmetrically arranged along the circumferential direction, and two end face snap-in portions are also symmetrically arranged along the circumferential direction.

[0013] The utility model has the following beneficial effects: the disposable endoscope sleeve provided by the utility model has a reliable structure, and by improving the interface structure of the sleeve, the interface of the sleeve is inserted into and fixed on the endoscope joint in a rotating manner, and the entire assembly process does not apply force to the outer tube of the endoscope, thereby reliably protecting the endoscope, and when it needs to be removed, it only needs to be rotated in the opposite direction, and the disassembly process is more convenient, the operation is easy, and the performance is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the casing structure in the utility model;

[0015] Figure 2 This is a schematic diagram of the assembly structure of the cannula and the endoscope in the utility model;

[0016] Figure 3 This is the front view of the assembled cannula and endoscope in the utility model;

[0017] Figure 4 This is a cross-sectional view of the utility model after the sleeve and the endoscope are assembled;

[0018] Figure 5 This is an axonometric view of the utility model after the sleeve and the endoscope are assembled;

[0019] Figures 1 to 5 The reference numerals shown in the figure represent respectively: 1-interface, 2-hose, 3-mirror cover, 10-cylindrical end, 11-conical end, 20-connector, 21-protrusion, 22-endoscope outer tube, 12-window, 13-limiting part, 14-identification structure. DETAILED DESCRIPTION

[0020] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0021] like Figures 1 to 5As shown, a disposable endoscope sleeve includes an interface 1, a hose 2 sleeved on the end of the interface 1, and a mirror cover 3 connected to the end of the hose 2 away from the interface 1. The material of the interface 1 is ABS, PVC, etc., the material of the hose 2 is a thin-walled tube with certain elasticity such as TPU, PVC, etc., the mirror cover 3 can be made of a highly light-transmitting material such as PC, and the joints of the three components can be fixed by glue dispensing or the like. The hose 2 is elastic, and its length is less than the length of the endoscope outer tube 22, so when the disposable endoscope sleeve is assembled with the endoscope, the hose 2 is in a stretched state.

[0022] The interface 1 includes a cylindrical end 10 and a conical end 11, and the diameter of the cylindrical end 10 of the interface 1 is larger than the diameter of the conical end 11 of the interface. An end face snap-in portion 15 is provided on the cylindrical end 10, and the end face snap-in portion 15 is snap-fitted with a protrusion 21 provided on the endoscope connector 20, and the end face shape of the cylindrical end 10 of the interface 1 is complementary to the circumferential shape of the position of the protrusion 21 of the endoscope connector 20, so that the endoscope sleeve can be smoothly screwed into the endoscope connector 20. The number of protrusions 21 is the same as the number of end face snap-in portions 15, both of which are two and symmetrically arranged. There is a small gap between the two protrusions 21 and the end face of the endoscope connector 20. A window 12 is provided on the side of the cylindrical end 10 of the interface 1, and the window 12 is a groove along the circumferential direction. The position of the window 12 is located in front of the end face snap-in portion 15 in the axial direction, and the position in the circumferential direction is the same as that of the end face snap-in portion 15. A marking structure 14 in the shape of a double arrow is provided at the position of the window 12 .

[0023] A stopper 13 for limiting the rotation of the interface 1 in the circumferential direction is provided on the inner surface of the interface 1, and the stopper 13 is located at a position connected to one of the circumferential edges of the window 12. The stopper 13 prevents the interface 1 from continuing to rotate in the circumferential direction after reaching a determined locking position.

[0024] When assembling the sleeve and the endoscope, adjust the end face of the cylindrical end 10 of the interface 1 to a position complementary to the shape of the endoscope connector 20, align the endoscope outer tube 22 with the center of the interface 1 of the disposable endoscope sleeve and insert it until the end face of the rear end of the cylindrical end 10 of the interface 1 contacts the end face of the endoscope connector 20, and then rotate the interface 1 90° clockwise. At this time, the two end face snap-in parts 15 at the rear end of the endoscope sleeve interface 1 are in the aforementioned small gap and abut against the end faces of the two protrusions 21 of the endoscope connector 20, and because the hose 2 is in a stretched state, the end face snap-in parts 15 are pulled toward the protrusions 21 in the axial direction, so that the endoscope sleeve can be firmly fixed on the endoscope connector 20. No external force will be applied to the endoscope outer tube 22 during the entire assembly process, which can avoid damaging the glass optical fiber inside the endoscope. When disassembly is required, the interface 1 can be unlocked by rotating it counterclockwise 90°, and the endoscope sleeve can be removed, which is very convenient and labor-saving. The above can also be locked counterclockwise and unlocked clockwise, and the limit part 13 at the window 12 can be adjusted to the opposite side.

[0025] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A disposable endoscope sleeve, used for being sleeved outside an endoscope, the disposable endoscope sleeve comprising an interface (1), a hose (2) sleeved on the end of the interface (1), and a mirror cover (3) connected to the end of the hose (2) away from the interface (1), the endoscope comprising an endoscope connector (20), the endoscope connector (20) being provided with a protrusion (21), characterized in that: The interface (1) comprises a cylindrical end (10) and a conical end (11); the cylindrical end (10) is provided with an end face snap-in portion (15); the end face snap-in portion (15) is snap-fitted with the protruding portion (21); and the end face shape of the cylindrical end (10) is complementary to the circumferential shape of the protruding portion (21), so that the disposable endoscope sleeve can be screwed into the endoscope connector (20); A window (12) is provided on the side surface of the cylindrical end (10), and the window (12) is located in front of the end face clipping portion (15) in the axial direction and is at the same position as the end face clipping portion (15) in the circumferential direction; A limiting portion (13) is provided on the inner surface of the interface (1) at a position connected to one of the edges of the window (12) along the circumferential direction, and the limiting portion (13) is used to limit the rotation range of the interface (1) along the circumferential direction.

2. The disposable endoscope cannula according to claim 1, characterized in that: The window (12) is provided with a marking structure (14) in the shape of a double arrow.

3. The disposable endoscope cannula according to claim 1, characterized in that: There is a gap between the end face of the endoscope connector (20) and the protruding portion (21), and when the end face snap-in portion (15) is snap-fitted with the protruding portion (21), it is located within the gap.

4. The disposable endoscope cannula according to claim 1, characterized in that: The hose (2) is elastic, and after the end face snap-in portion (15) is snap-fitted with the protruding portion (21), the hose (2) is in a stretched state.

5. The disposable endoscope cannula according to claim 1, characterized in that: The diameter of the cylindrical end (10) of the interface (1) is greater than the diameter of the conical end (11) of the interface (1).

6. The disposable endoscope cannula according to any one of claims 1 to 5, characterized in that: The protruding portions (21) are arranged in two symmetrical portions along the circumferential direction, and the end surface snap-in portions (15) are also arranged in two symmetrical portions along the circumferential direction.

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