Endoscope cannula assembly and endoscope

Abstract

The invention provides an endoscope sleeve assembly and an endoscope. The endoscope sleeve assembly comprises an outer sheath part and an inner sheath part, and the inner sheath part is sleeved with the outer sheath part. The outer sheath piece comprises an outer tube body section and an outer tube seat section; the outer pipe body section is provided with a first channel; the outer tube seat section is provided with a second channel; the inner sheath piece comprises an inner pipe body section and an inner pipe seat section, the inner pipe body section is located in the outer pipe body section, and the inner pipe body section is provided with a third channel extending in the length direction of the inner pipe body section; one end of the third channel is closed, and the other end is open, so that the insertion part of the endoscope can conveniently penetrate and is limited in the third channel; the inner tube seat section is located at the end, away from the outer tube body section, of the outer tube seat section and comprises an inner tube seat section body and a second fastener. The inner tube seat section body is provided with a fourth through channel, and the fourth channel is used for containing and limiting an operation part of the endoscope; the second fastener is located at the end, away from the inner tube body section, of the inner tube base section body and used for sealing an operation part of the endoscope.

Description

Technical Field

[0001] This application belongs to the field of medical devices, and particularly relates to an endoscope sleeve assembly and an endoscope. Background Art

[0002] Currently, medical endoscopes include an insertion portion and an operation portion. The operation portion is used to control the insertion portion to extend into the human body for detection and diagnosis. The insertion portion includes a head end portion at the front end of the insertion portion, and the head end portion includes components such as an air and water supply nozzle and an objective lens. During the detection process of existing medical endoscopes, they are easily contaminated by the patient's body fluids, blood, etc., and it is not easy to completely sterilize the medical endoscope after detection, resulting in cross-infection among patients. Summary of the Invention

[0003] One of the purposes of this application is to provide an endoscope sleeve assembly and an endoscope, which can reduce the risk of cross-infection among patients.

[0004] To achieve the above purpose and other related purposes, this application provides an endoscope sleeve assembly, including an outer protection kit and an inner protection kit. The outer protection kit is sleeved on the inner protection kit; the outer protection kit includes an outer tube body section and an outer tube seat section that are connected and communicated with each other; the outer tube body section has a first channel penetrating through the outer tube body section; the outer tube seat section has a second channel penetrating through the outer tube seat section;

[0005] The inner protection kit includes an inner tube body section and an inner tube seat section that are connected and communicated with each other. The inner tube body section is located inside the outer tube body section. In the axial direction, the inner tube body section and the outer tube body section maintain a predetermined gap;

[0006] The inner tube body section has a third channel extending along the length direction of the inner tube body section; one end of the third channel away from the inner tube seat section is closed, denoted as the closed end; one end of the third channel facing the inner tube seat section is open, facilitating the insertion portion of the endoscope to penetrate and be limited in the third channel;

[0007] The inner tube seat section is located at one end of the outer tube seat section away from the outer tube body section. The inner tube seat section includes an inner tube seat section body and a second fastener; the inner tube seat section body has a through fourth channel, and the fourth channel is used to accommodate and limit the operation portion of the endoscope; the second fastener is located at one end of the inner tube seat section body away from the inner tube body section, and the second fastener is used to seal the operation portion of the endoscope.

[0008] This application also provides an endoscope, including the above endoscope sleeve assembly.

[0009] This application has at least the following beneficial effects:

[0010] By using the endoscope cannula assembly and endoscope of the present application, through the setting of the outer protection kit and the inner protection kit, the inner protection kit includes an inner tube body section and an inner tube seat section. The inner tube body section is used to fix and seal the insertion part of the endoscope, and the inner tube seat section is used to fix and seal the operation part of the endoscope, realizing the sealing of the medical endoscope during the detection process, avoiding the contamination of the patient's body fluids, blood, etc., and reducing the risk of cross-infection of patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0012] Figure 1 FIG. is a schematic diagram of the overall structure of the endoscope cannula assembly shown according to an embodiment of the present application;

[0013] Figure 2a FIG. is a schematic diagram of the overall structure of the outer protection kit shown according to an embodiment of the present application;

[0014] Figure 2b FIG. is an exploded view of the outer protection kit shown according to an embodiment of the present application;

[0015] Figure 3a FIG. is a schematic diagram of the overall structure of the inner protection kit shown according to an embodiment of the present application;

[0016] Figure 3b FIG. is an exploded view of the inner protection kit shown according to an embodiment of the present application;

[0017] Figure 4 FIG. is a schematic diagram of the structure at the connection between the outer protection kit and the inner protection kit shown according to an embodiment of the present application;

[0018] Figure 5 FIG. is a schematic diagram of the structure at the connection between the outer protection kit and the inner protection kit from another angle shown according to an embodiment of the present application;

[0019] Figure 6 FIG. is Figure 5 a cross-sectional view taken along the U-U direction.

[0020] Figure 7 FIG. is a schematic diagram of the installation of the foreign body forceps part shown according to an embodiment of the present application.

[0021] Illustration:

[0022] 100 Outer protection kit; 10 Outer tube body section; 11 First channel; 12 Outer tube seat section; 12a First fastener; 12b Sealing washer; 13 Second channel; 14 Valve; 15 Gripping member; 16 Forked portion; 16a Sealing cap; 16b Slide plate; 200 Inner protection kit; 20 Inner tube body section; 21 Third channel; 21a Closed end; 22 Inner tube seat section; 22a Second fastener; 22b Sealing washer; 23 Fourth channel; 31 Foreign body forceps; 31a Forceps head; 31b Outer tube; 31c Cable; 31d Handle; 32 Foreign body forceps receiving tube. Detailed implementation manners

[0023] The following uses specific specific embodiments to illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through other different specific implementation manners. Various details in the present application can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0024] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] Embodiment 1

[0026] Referring to Figure 1 , this embodiment provides an endoscope cannula assembly, including an outer protection kit 100 and an inner protection kit 200. The inner protection kit 200 is sleeved on the insertion portion and the operation portion of the endoscope in a sealed manner to prevent the insertion portion and the operation portion of the endoscope from being contaminated during use. The outer protection kit 100 is sleeved on the inner protection kit 200 to provide support and protection for the inner protection kit 200.

[0027] Referring to Figure 2, the outer protection kit 100 includes an outer tube body section 10 and an outer tube seat section 12 that are connected and communicated with each other. The inner protection kit 200 includes an inner tube body section 20 and an inner tube seat section 22 that are connected and communicated with each other. The following first introduces each component of the outer protection kit 100 in detail.

[0028] The outer tube body section 10 is a tubular structure with a first channel 11 running through it. The first channel 11 is used to accommodate the inner tube body section 20 and the insertion part of the endoscope located in the inner tube body section 20, and also serves as a channel for supplying injection liquid to the patient's body and a channel for aspirating liquid from the patient's body. For example, during the endoscope examination, when it is found that the tissue in the patient's body is blocked by blood or other situations, liquid is injected into the patient's body through the first channel 11 to clean the blocked tissue of the patient. Then, the liquid injected into the patient's body is aspirated through the first channel 11, facilitating the detection by the insertion part of the endoscope of the inner tube body section 20.

[0029] The outer tube seat section 12 includes a main body part and at least two bifurcated parts 16. The main body part and the two bifurcated parts 16 are connected to form a cross-shaped structure or a tree-branch-shaped structure. In the case of a cross-shaped structure, the main body part is perpendicular to the bifurcated parts 16 located on both sides of the main body part respectively. In the case of a tree-branch-shaped structure, the main body part forms an acute angle with the bifurcated parts 16 located on both sides of the main body part respectively. For example, the acute angle can be 30 to 60 degrees.

[0030] The main body part has a second channel 13 running through it, and the second channel 13 is in communication with the first channel 11.

[0031] The bifurcated part 16 has a bifurcated part channel running through it. One of the bifurcated part channels is used to communicate with an external water suction pipe, and the other bifurcated part channel is used to communicate with an external water flushing pipe. The two bifurcated part channels are respectively in communication with the second channel 13. And the second channel 13 is in communication with the first channel 11, so that after the liquid enters the bifurcated part channel through the water flushing pipe, it flows through the second channel 13 and the first channel 11 in sequence and then flows into the patient's body, and the liquid in the patient's body enters the water suction pipe through the first channel 11, the second channel 13, and the bifurcated part channel and is sucked away by the water suction pipe.

[0032] In some embodiments, the bifurcated part 16 is provided with a valve 14 for controlling the flow rate of the liquid in the bifurcated part channel.

[0033] Furthermore, a flow switch is provided for controlling the valve 14 of the bifurcated part 16, thereby adjusting the flow rate of the liquid in the bifurcated part channel in real time. In one example, the flow switch can be a sliding switch. Referring to Figure 2a and Figure 2b , the sliding switch includes a sliding piece 16b. The sliding piece 16b is arranged on the bifurcated part 16 and can move relative to the bifurcated part 16 in a sliding manner. In another example, the flow switch can be a touch screen, and the touch screen is installed on the side wall of the outer tube seat section 12. In yet another embodiment, the flow switch can be a remote control for remote use.

[0034] In some embodiments, a sealing cap 16a is provided at one end of the bifurcated part 16 away from the main body part. The sealing cap 16a is used to seal the communication between the bifurcated part 16 and the outside. For example, referring to Figure 2aand Figure 2b The bifurcated parts 16 are respectively located on the left and right sides in the figure. The bifurcated part 16 on the left is communicated with the flushing pipe, and the bifurcated part 16 on the right is communicated with the suction pipe. When it is necessary to suck out the liquid in the patient's body, the flushing pipe is removed, and the end of the bifurcated part 16 on the left is blocked by the sealing cap 16a, so that the liquid in the patient's body is sucked away by the suction pipe through the bifurcated part 16 on the right.

[0035] In some embodiments, the outer tube seat section 12 further includes a holding member 15 to facilitate the user to hold the outer tube seat section 12.

[0036] The inner diameter of the second channel 13 is between 5 and 8 centimeters.

[0037] Referring to FIG. 3, the inner protection kit 200 includes an inner tube body section 20 and an inner tube seat section 22 that are connected and communicated with each other. The inner tube body section 20 is located in the outer tube body section 10. The inner tube body section 20 is used to accommodate, fix and seal the insertion part of the endoscope. The inner tube seat section 22 is located at one end of the outer tube seat section 12 away from the outer tube body section 10. The inner tube seat section 22 is used to accommodate, fix and seal the operation part of the endoscope. The following details each component of the inner protection kit 200.

[0038] The inner tube body section 20 is a tubular structure and has a third channel 21 extending along the length direction of the inner tube body section 20. One end of the third channel 21 away from the inner tube seat section 22 is closed (i.e., the closed end 21a), and one end of the third channel 21 facing the inner tube seat section 22 is open, facilitating the insertion part of the endoscope to penetrate and be accommodated in the third channel 21. The inner protection kit 200 separates the insertion part of the endoscope from the outside in a sealed manner, avoiding the insertion part of the endoscope from being contaminated during the inspection process.

[0039] In the axial direction, the inner tube body section 20 maintains a predetermined gap from the outer tube body section 10, so that after the inner tube body section 20 penetrates into the outer tube body section 10, the first channel 11 of the outer tube body section 10 is communicated with the second channel 13 of the outer tube seat section 12.

[0040] In some embodiments, the inner tube body section 20 is a flexible tube, facilitating the insertion part of the endoscope to pass through the inner tube body section 20 without being easily worn, and protecting the insertion part of the endoscope from external impact during the use of the insertion part of the endoscope.

[0041] In some embodiments, the outer tube body section 10 is a rigid tube, which is used to provide support for the inner tube body section 20 located in the outer tube body section 10.

[0042] The length of the inner tube body section 20 is greater than the length of the outer tube body section 10, so that the closed end 21a of the inner tube body section 20 extends out of the outer tube body section 10, and further enables the front end of the insertion part of the endoscope to drive the closed end 21a of the inner tube body section 20 to bend freely without being restricted by the outer tube body section 10.

[0043] In some embodiments, a clamping groove (not shown in the figure) is provided on one side of the inner tube body section 20 close to the closed end 21a, for limiting the part of the insertion portion of the endoscope close to the closed end 21a of the inner tube body section 20, so that the part of the insertion portion of the endoscope close to the closed end 21a of the inner tube body section 20 (i.e., the photographic shooting end) always maintains a fixed state with the closed end 21a of the inner tube body section 20. The end face of the closed end 21a of the inner tube body section 20 can be parallel to the end face of the head end portion of the insertion portion of the endoscope, for example, both are spherical surfaces with the same curvature or both are planes, or the end face of the photographic shooting end of the endoscope can be attached to the end face of the closed end 21a of the inner tube body section 20, for example, attached together in an adhesive manner, which is beneficial to keeping the picture collected by the endoscope clear all the time.

[0044] Refer to Figures 4 to 6 , the inner tube seat section 22 is connected to the main body portion of the outer tube seat section 12 through the inner tube body section 20. The main body portion includes a main body portion body and a first fastener 12a. The first fastener 12a is located at one end of the main body portion body close to the inner tube seat section 22. The first fastener 12a is used to fix and limit the inner tube body section 20.

[0045] In some embodiments, the first fastener 12a can be a compression cap. Refer to Figure 1 , the compression cap is sleeved at the connection between the inner tube body section 20 and the inner tube seat section 22, and the fastening and sealing between the inner tube body section 20 and the inner tube seat section 22 can be realized by tightening the compression cap.

[0046] In order to further provide sealing performance, refer to Figure 6 , the compression cap can be used in cooperation with a sealing gasket 12b. The sealing gasket 12b is used to fill the gaps between the compression cap and the inner tube body section 20 and the inner tube seat section 22 and the gap between the compression cap and the main body portion body, to realize the sealing of the second channel 13 of the main body portion and prevent the liquid in the second channel 13 from leaking. The sealing gasket 12b can be made of silica gel material.

[0047] Refer to Figure 6 , the inner tube seat section 22 includes an inner tube seat section body and a second fastener 22a.

[0048] The inner tube seat section body is in a funnel-shaped structure. The inner tube seat section body has a through fourth channel 23, and the shape of the fourth channel 23 is adapted to the shape of the operation portion of the endoscope, which is convenient for accommodating and limiting the operation portion of the endoscope.

[0049] The second fastener 22a is located at one end of the inner tube socket section body away from the inner tube section 20. The second fastener 22a is used to fix and limit the operating part of the endoscope located within the inner tube socket section body. The second fastener 22a can be a lock nut, and the lock nut is threadedly connected to the inner tube socket section body. By rotating the lock nut, the lock nut moves downward along the thread of the inner tube socket section body, gradually tightening the operating part of the endoscope within the inner tube socket section body, thereby achieving the sealing between the inner tube socket section body and the operating part of the endoscope. To further provide sealing performance, the lock nut can be used in conjunction with a sealing washer 22b. The sealing washer 22b is used to fill the gaps between the lock nut and the operating part of the endoscope as well as between the lock nut and the inner tube socket section body, achieving the sealing between the inner tube socket section body and the operating part of the endoscope and preventing the operating part of the endoscope from being contaminated during the examination process. The sealing washer 22b can be made of silicone material.

[0050] In some embodiments, the inner protective kit 200 is for single use, which is convenient for replacement.

[0051] In some embodiments, the outer protective kit 100 is reusable.

[0052] In some embodiments, the endoscope cannula assembly is made of a medical polymer material with good biocompatibility and corrosion resistance, such as polyethylene material.

[0053] Embodiment Two

[0054] Compared with the endoscope cannula assembly of the first embodiment of the present invention, the difference of the endoscope cannula assembly of this second embodiment mainly lies in that: the endoscope cannula assembly includes a foreign body forceps part. The foreign body forceps part is installed on the outer side of the outer tube section 10 and is used to clamp foreign bodies or stents located in the patient's body. The stent can be, for example, a ureteral stent. The foreign body forceps part includes a foreign body forceps 31 and a foreign body forceps receiving tube 32.

[0055] The foreign body forceps receiving tube 32 is installed on the outer side of the outer tube section 10, and the length direction of the foreign body forceps receiving tube 32 is parallel to that of the outer tube section 10. The foreign body forceps receiving tube 32 is internally provided with a receiving channel for limiting the foreign body forceps 31.

[0056] The foreign body forceps 31 includes a forceps head 31a, an outer tube 31b, a cable 31c, and a handle 31d that are connected in sequence. The foreign body forceps 31 is detachably installed within the foreign body forceps receiving tube 32. During the installation of the foreign body forceps 31, the cable 31c and the handle 31d remain outside the foreign body forceps receiving tube 32, while the forceps head 31a and the outer tube 31b extend into the foreign body forceps receiving tube 32 from one end. When the installation is completed, the outer tube 31b stays within the receiving channel of the foreign body forceps receiving tube 32, while the forceps head 31a extends out of the other end of the foreign body forceps receiving tube 32.

[0057] In some embodiments, the foreign object forceps 31 can be for single use and will not contact the endoscope during operation, avoiding contamination of the endoscope.

[0058] Compared with arranging a channel for operating the foreign object forceps inside the first channel 11 of the outer tube section 10, the foreign object forceps part installed on the outside of the outer tube section 10 will not block or interfere with the normal operation of other components of the endoscope sleeve assembly, such as providing injection liquid to the patient's body or extracting liquid from the patient's body. At the same time, the foreign object forceps part installed on the outside of the outer tube section 10 also has a more flexible operation space and can conveniently replace the foreign object forceps 31, thus reducing the risk of cross-contamination to the endoscope during the operation of the foreign object forceps 31.

[0059] The present application also provides an endoscope, including the above-mentioned endoscope sleeve assembly.

[0060] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present application, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present application.

Claims

1. An endoscope cannula assembly, characterized in that, It includes an outer protection kit and an inner protection kit, and the outer protection kit is sleeved on the inner protection kit; the outer protection kit includes an outer tube body section and an outer tube seat section which are connected and communicated with each other; the outer tube body section has a first channel penetrating through the outer tube body section; the outer tube seat section has a second channel penetrating through the outer tube seat section; the inner protection kit includes an inner tube body section and an inner tube seat section which are connected and communicated with each other, the inner tube body section is located inside the outer tube body section, and in the axial direction, the inner tube body section and the outer tube body section maintain a predetermined gap; the inner tube body section has a third channel extending along the length direction of the inner tube body section; one end of the third channel far from the inner tube seat section is closed, denoted as the closed end; one end of the third channel facing the inner tube seat section is open, facilitating the insertion part of the endoscope to penetrate into and be limited in the third channel; the inner tube seat section is located at one end of the outer tube seat section far from the outer tube body section, and the inner tube seat section includes an inner tube seat section body and a second fastener; the inner tube seat section body has a through fourth channel for accommodating and limiting the operation part of the endoscope; the second fastener is located at one end of the inner tube seat section body far from the inner tube body section, and the second fastener is used for sealing the operation part of the endoscope.

2. The endoscopic cannula assembly according to claim 1, wherein The outer tube seat section includes a main body part and at least two bifurcated parts; the second channel penetrates through the main body part; each bifurcated part has a bifurcated part channel penetrating through it; one of the bifurcated part channels is used for communicating with an external water suction pipe, and the other bifurcated part channel is used for communicating with an external water flushing pipe; the two bifurcated part channels are respectively communicated with the second channel.

3. The endoscopic cannula assembly according to claim 1, wherein The inner tube body section is a flexible tube.

4. The endoscopic cannula assembly according to claim 1, wherein, The outer tube body section is a rigid tube.

5. The endoscopic cannula assembly according to claim 1, wherein The closed end extends out of the outer tube body section.

6. The endoscopic cannula assembly according to claim 1, wherein, A clamping groove is provided on one side of the inner tube body section close to the closed end.

7. The endoscopic cannula assembly according to claim 1, wherein, The end face of the closed end of the inner tube body section is parallel to the end face of the head end part of the endoscope insertion part.

8. The endoscopic cannula assembly according to claim 2, wherein The main body part includes a main body part body and a first fastener; the first fastener is located at one end of the main body part body close to the inner tube seat section; the first fastener is used for fixing and limiting the inner tube body section to achieve the sealing of the second channel.

9. The endoscopic cannula assembly according to claim 8, wherein, The first fastener is a compression cap.

10. The endoscopic cannula assembly according to claim 1, wherein, The second fastener is a lock cap.

11. The endoscopic cannula assembly according to claim 1, wherein, The endoscope sleeve assembly includes a foreign body forceps part, and the foreign body forceps part includes a foreign body forceps and a foreign body forceps receiving tube; the foreign body forceps receiving tube is installed on the outer side of the outer tube body section, and the length direction of the foreign body forceps receiving tube is parallel to that of the outer tube body section; the foreign body forceps is detachably installed in the foreign body forceps receiving tube.

12. An endoscope, characterized in that, The endoscope sleeve assembly according to any one of claims 1 to 11.

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