Disposable electronic endoscope

Abstract

The utility model relates to the technical field of medical instruments, in particular to a disposable electronic endoscope which comprises a connector, a telescopic ring, a telescopic loop bar and an endoscope sheath catheter, and the lower end of the connector is detachably connected with the telescopic ring. The telescopic loop bar is inserted into the telescopic ring and is rotationally connected with the telescopic ring; the sheath catheter penetrates through the joint and then is inserted into the telescopic loop bar; the sheath catheter is fixedly connected with the joint; the lower end of the connector is provided with a guide column extending in the axial direction, and a guide column matching groove matched with the guide column is formed in the telescopic sleeve rod. A liquid inlet is formed in the side wall of the connector and communicated with the endoscope sheath catheter. The bottom of the telescopic sleeve rod is connected with the endoscope handle shell; an imaging catheter is inserted into the endoscope sheath catheter; a positioning structure matched with an endoscope handle shell is machined at the bottom of the imaging catheter. The length of the endoscope can be adjusted, meanwhile, the whole structure has sealing performance, and it is guaranteed that liquid in the endoscope sheath cavity cannot leak inwards or outwards.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, concretely relates to a disposable electronic endoscope, it has telescopic function and convenient replacement sheath. BACKGROUND

[0002] In order to avoid cross infection, reduce the time cost and risk brought by repeated disinfection, disposable endoscope sheath will be applied in clinic in large quantities. Because the sheath needs to protect the endoscope when inserting or in the body, so the length is longer than or equal to the length of endoscope catheter, and after inserting into the patient's body, the lens of endoscope needs to be exposed to get wider field of view, at this time the length of sheath needs to be shorter than endoscope catheter. Therefore, a telescopic and convenient endoscope sheath is urgently needed.

[0003] Because the liquid needs to be injected between the sheath and the tube when using the endoscope, so the sealing property of the sheath is also particularly important, the liquid in the sheath cavity needs to be prevented from leaking in or out. Moreover, the imaging catheter of the endoscope needs to be positioned, and its positioning structure needs to be developed. SUMMARY

[0004] In order to solve the above-mentioned problems, a disposable electronic endoscope is provided, which has adjustable length and good sealing property.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme that a disposable electronic endoscope,

[0006] Including joint, telescopic ring, telescopic sleeve rod and sheath catheter, the lower end of joint is detachably connected with telescopic ring;

[0007] The telescopic sleeve rod is inserted into the telescopic ring and rotationally connected with the telescopic ring;

[0008] The sheath catheter is inserted into the telescopic sleeve rod after passing through the joint; The sheath catheter is fixedly connected with the joint;

[0009] The lower end of the joint is provided with an axially extending guide column, and the telescopic sleeve rod is provided with a guide column matching groove matched with the guide column.

[0010] The side wall of the joint is provided with a liquid inlet, and the liquid inlet is communicated with the sheath catheter;

[0011] The bottom of the telescopic sleeve rod is connected with the endoscope handle shell;

[0012] The imaging catheter is inserted into the sheath catheter;

[0013] The bottom of the imaging catheter is processed with a positioning structure matched with the endoscope handle shell.

[0014] Further, the lower end of the connector is provided with a buckle, and the connector is clamped together with the inner wall of the telescopic ring through the buckle.

[0015] Further, the outer periphery of the telescopic ring is provided with a protrusion extending in the axial direction.

[0016] Further, a first sealing ring is arranged between the mirror sheath catheter and the telescopic sleeve rod.

[0017] Further, the telescopic sleeve rod is threadedly connected with the telescopic ring, the telescopic sleeve rod and the mirror sheath catheter are driven to move in the axial direction by rotating the telescopic ring, and the end of the thread on the upper end of the telescopic sleeve rod is provided with a limiting buckle to limit the rotating angle of the telescopic ring.

[0018] Further, the lower end of the telescopic sleeve rod is provided with a limiting table for limiting the depth of the telescopic sleeve rod inserted into the telescopic ring.

[0019] Further, a second sealing ring is arranged between the telescopic sleeve rod and the endoscope handle shell, and a third sealing ring is arranged between the endoscope handle shell and the imaging catheter.

[0020] Further, the liquid inlet is connected with the liquid inlet connector.

[0021] Further, the positioning structure is a stepped hole, and the radial two sides of the stepped hole are processed with fixing grooves for cooperating with the protrusions in the endoscope handle shell.

[0022] Further, the positioning structure is a limiting sheet, and the limiting sheet is processed with a limiting groove in the radial direction.

[0023] Compared with the prior art, the endoscope length of the present application can be adjusted, and the whole structure has sealing performance, so that the liquid in the mirror sheath cavity cannot leak outwards or inwards.

[0024] Single-handed operation, only need to rotate and move the telescopic ring to realize the telescopic and positioning of the mirror sheath, which is convenient and reliable to operate, and is convenient to assemble and install. The endoscope converts the rotating movement of the telescopic ring into the axial movement of the mirror sheath catheter; through the precise cooperation of the guide column and the guide groove, the precision of the axial movement of the connector and the mirror sheath catheter is realized, and the gap between the mirror sheath catheter and the imaging catheter is ensured; in order to realize the telescopic function, the relative rotation and relative movement between the mirror sheath components, the relative rotation between the telescopic ring and the connector and the telescopic sleeve rod, and the relative movement between the connector and the telescopic sleeve rod are realized, but through the overall structural design and the method of arranging the sealing ring at the key position, the whole mirror sheath is realized without leakage point, and the mirror sheath is simple to replace. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The structure of the disposable electronic endoscope provided by the present application is shown in the figure when the telescopic length is the shortest.

[0026] Figure 2 The use state diagram of the disposable electronic endoscope is stretched to the longest:

[0027] Figure 3 The external schematic view of the endoscope sheath is provided;

[0028] Figure 4 The structural schematic view of the joint is provided;

[0029] Figure 5 The structural schematic view of the telescopic sleeve rod is provided;

[0030] Figure 6 The sectional view of the disposable electronic endoscope is provided;

[0031] Figure 7 The structural schematic view of the positioning structure is provided;

[0032] Figure 8 The local enlarged view is provided; Figure 7

[0033] Wherein: joint 1, telescopic ring 2, telescopic sleeve rod 3, mirror sheath catheter 4, guide column 5, guide column matching groove 6, buckle 7, first sealing ring 8, limiting card 9, protrusion 10, limiting table 11, liquid inlet 12, handle shell 13, imaging catheter 14, second sealing ring 15, third sealing ring 16, liquid inlet joint 17, stepped hole 18, limiting sheet 19, limiting groove 20. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to 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 the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0035] As shown in Figures 1-8 The present embodiment provides a disposable electronic endoscope, which comprises a joint 1, a telescopic ring 2, a telescopic sleeve rod 3 and a mirror sheath catheter 4, the lower end of the joint 1 is detachably connected with the telescopic ring 2; the telescopic ring 2 is open at both ends and is internally provided with a cylindrical cavity;

[0036] The telescopic sleeve rod 3 is inserted into the telescopic ring 2 and is rotationally connected with the telescopic ring 2;

[0037] ​The joint 1 and the telescopic sleeve rod 3 are both processed with axial through holes, the sheath guide pipe 4 is inserted into the telescopic sleeve rod 3 after passing through the joint 1; the sheath guide pipe 4 can be an integral structure with the joint 1, and is made into an integral piece by injection molding, bonding or other ways;

[0038] The joint 1 is provided with an axially extending guide column 5 at the lower end, and the telescopic sleeve rod 3 is provided with a guide column matching groove 6 matched with the guide column 5; the guide column 5 is generally two, arranged on the two sides of the radial direction of the telescopic sleeve rod 3, and can be in the form of a cylinder or a cuboid; the guide column 5 is an integral structure or a fixed connection structure with the joint 1, to prevent the joint 1 from producing radial deviation when moving axially, and to prevent the joint 1 from rotating relative to the telescopic sleeve rod 3; the guide column matching groove 6 is a blind hole, and its depth needs to meet the condition that when the sheath is stretched to the longest position, the guide column 5 still has a part inserted into the guide column matching groove 6; Figure 2

[0039] The joint 1 is provided with an axially extending guide column 5 at the lower end, and the telescopic sleeve rod 3 is provided with a guide column matching groove 6 matched with the guide column 5; the guide column 5 is generally two, arranged on the two sides of the radial direction of the telescopic sleeve rod 3, and can be in the form of a cylinder or a cuboid; the guide column 5 is an integral structure or a fixed connection structure with the joint 1, to prevent the joint 1 from producing radial deviation when moving axially, and to prevent the joint 1 from rotating relative to the telescopic sleeve rod 3; the guide column matching groove 6 is a blind hole, and its depth needs to meet the condition that when the sheath is stretched to the longest position, the guide column 5 still has a part inserted into the guide column matching groove 6;

[0040] The bottom of the telescopic sleeve rod 3 is connected with the endoscope handle shell 13;

[0041] The imaging guide pipe 14 is inserted into the sheath guide pipe 4;

[0042] The bottom of the imaging guide pipe 14 is processed with a positioning structure matched with the endoscope handle shell 13, so that the imaging guide pipe 14 is fixedly connected with the endoscope handle shell 13, and the imaging guide pipe 14 is radially positioned and prevented from rotating.

[0043] In another embodiment of the present application, referring to Figure 1 and Figure 2 The joint 1 is provided with a buckle 7 at the lower end, and the joint 1 is clamped together with the inner wall of the telescopic ring 2 through the buckle 7.

[0044] In another embodiment of the present application, referring to Figure 3 The telescopic ring 2 is provided with axially extending protrusions 10 at intervals on the outer periphery, which is convenient for operation.

[0045] In another embodiment of the present application, a first sealing ring 8 is arranged between the sheath guide pipe 4 and the telescopic sleeve rod 3, and the sheath guide pipe 4 and the telescopic sleeve rod 3 need to have axial relative movement; the first sealing ring 8 is installed between the sheath guide pipe 4 and the telescopic sleeve rod 3, so that the sheath guide pipe 4 does not leak liquid whether it is static or moving.

[0046] ​In another embodiment of the present application, the telescopic sleeve rod 3 is threadedly connected with the telescopic ring 2, and the telescopic ring 2 drives the telescopic sleeve rod 3 and the sheath catheter 4 to move axially by rotating; the end of the thread on the upper end of the telescopic sleeve rod 3 is provided with a limiting piece 9 to limit the rotating angle of the telescopic ring 2.

[0047] In another embodiment of the present application, the lower end of the telescopic sleeve rod 3 is provided with a limiting platform 11 to limit the depth of the telescopic sleeve rod 3 inserted into the telescopic ring 2.

[0048] In another embodiment of the present application, the second sealing ring 15 is arranged between the telescopic sleeve rod 3 and the endoscope handle shell 13 to prevent liquid from leaking from the position. In the assembled structure of the endoscope, the third sealing ring 16 is arranged between the endoscope handle shell 13 and the imaging catheter 14 to prevent the liquid in the liquid cavity from leaking from the connection position between the imaging catheter 14 and the shell, and to prevent the liquid from entering the inside of the endoscope handle. The imaging catheter 14, the sheath catheter 4, the telescopic sleeve rod 3, the endoscope handle shell 13, the first sealing ring 8, the second sealing ring 15 and the third sealing ring 16 form a liquid cavity, and the liquid in the liquid cavity can only flow out from the gap between the front ends of the imaging catheter 14 and the sheath catheter 4.

[0049] In another embodiment of the present application, the liquid inlet 12 is connected with the liquid inlet connector 17.

[0050] In another embodiment of the present application, the positioning structure is a stepped hole 18, and the radial two sides of the stepped hole 18 are processed with fixing grooves to be matched and connected with the protrusions in the endoscope handle shell 13. The stepped hole is used for the axial positioning of the imaging catheter, and the fixing grooves (rectangular grooves) are matched and connected with the corresponding protrusions on the shell for radial positioning and anti-rotation.

[0051] In another embodiment of the present application, the positioning structure is a limiting piece 19, and the limiting piece 19 is radially processed with a limiting groove 20. The limiting piece can be a circular steel piece processed with a rectangular groove, or the limiting piece can be replaced with a profiled steel piece.

[0052] In use, the first sealing ring 8 is first placed into the sealing groove of the telescopic sleeve rod 3, then the telescopic ring 2 is assembled on the telescopic sleeve rod 3, the telescopic ring can be screwed into the upper end of the telescopic sleeve rod, then the connector assembly sheath catheter 4, the connector 1, the buckle 7 and the guide column 5 on the guide column 5 are inserted into the corresponding guide column matching groove 6 of the telescopic sleeve rod 3, the buckle 7 is inserted into the telescopic ring 2 along the guide direction, the second sealing ring 15 is placed into the corresponding sealing groove, and then the assembled sheath is mounted on the endoscope handle shell 13 for use; the bottom of the imaging catheter 14 is matched and connected with the corresponding protrusions on the endoscope handle shell 13 through the positioning structure for radial positioning and anti-rotation, so as to realize the fixed connection of the imaging catheter and the shell.

[0053] Rotating the telescopic ring 2, the telescopic ring 2 is unlocked, and then is axially moved to the other end, and is positioned and locked by rotating the telescopic ring 2. The upper part of the telescopic sleeve rod 3 is limited by the limiting card 9, and the limiting card 9 limits the rotation limit position of the telescopic ring 2. The bottom of the telescopic sleeve rod 3 is limited by the limiting table 11, and the limiting table 11 limits the limit position of the other end of the telescopic ring. The axial movement of the telescopic ring 2 drives the axial movement of the joint 1. The joint 1 has at least one guide column 5, which is matched with the guide column groove 6 on the telescopic sleeve rod 3, so as to ensure that the joint 1 only moves axially with the telescopic ring 2. When the telescopic ring 2 is matched with the telescopic sleeve rod 3 at the bottom of the telescopic sleeve rod 3, the mirror sheath is in the shortest position. When the telescopic ring 2 is matched with the telescopic sleeve rod 3 at the top of the telescopic sleeve rod 3, the mirror sheath is in the longest position, and the end of the mirror sheath guide tube 4 is matched with the first sealing ring 8.

[0054] Specific use process: after the preparation work before using the endoscope is completed, the assembled endoscope mirror sheath can be installed on the endoscope handle shell 13, the telescopic ring 2 is rotated and moved, and the mirror sheath guide tube 4 is positioned in the longest position. Then the endoscope mirror sheath is inserted into the endoscope operation incision of the patient, and physiological saline is injected from the liquid inlet; the telescopic ring 2 is rotated and moved, and the mirror sheath guide tube 4 is positioned in the shortest position, the patient's affected area is checked through the endoscope lens end, and after the check is completed, the endoscope is replaced, and the next patient can be checked.

[0055] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A disposable electronic endoscope, characterized in that: it comprises a joint (1), an elastic ring (2), an elastic sleeve rod (3) and a sheath catheter (4), the lower end of the joint (1) is detachably connected with the elastic ring (2); the elastic sleeve rod (3) is inserted into the elastic ring (2) and rotationally connected with the elastic ring (2); the sheath catheter (4) is inserted into the elastic sleeve rod (3) after passing through the joint (1); the sheath catheter (4) is fixedly connected with the joint (1); an axially extending guide column (5) is arranged at the lower end of the joint (1), and a guide column matching groove (6) matched with the guide column (5) is arranged in the elastic sleeve rod (3); a liquid inlet (12) is arranged on the side wall of the joint (1), and the liquid inlet (12) is in communication with the sheath catheter (4); the bottom of the elastic sleeve rod (3) is connected with an endoscope handle shell (13); an imaging catheter (14) is inserted into the sheath catheter (4); a positioning structure is arranged at the bottom of the imaging catheter (14) and matched with the endoscope handle shell (13).

2. The disposable electronic endoscope of claim 1, wherein: a buckle (7) is arranged at the lower end of the joint (1), and the joint (1) is clamped together with the inner wall of the elastic ring (2) through the buckle (7).

3. The disposable electronic endoscope of claim 1, wherein: a plurality of protrusions (10) extending in the axial direction are arranged at intervals on the outer periphery of the elastic ring (2).

4. The disposable electronic endoscope of claim 1, wherein: a first sealing ring (8) is arranged between the sheath catheter (4) and the elastic sleeve rod (3).

5. The single use electronic endoscope of claim 1, wherein: the elastic sleeve rod (3) is threadedly connected with the elastic ring (2), the elastic sleeve rod (3) and the sheath catheter (4) are moved in the axial direction by rotating the elastic ring (2); a limiting buckle (9) is arranged at the end of the thread at the upper end of the elastic sleeve rod (3), so as to limit the rotation angle of the elastic ring (2).

6. The disposable electronic endoscope according to claim 1 or 5, characterized by: a limiting table (11) is arranged at the lower end of the elastic sleeve rod (3), for limiting the depth of the elastic sleeve rod (3) inserted into the elastic ring (2).

7. The disposable electronic endoscope of claim 1, wherein: a second sealing ring (15) is arranged between the elastic sleeve rod (3) and the endoscope handle shell (13); a third sealing ring (16) is arranged between the endoscope handle shell (13) and the imaging catheter (14).

8. The single use electronic endoscope of claim 1, wherein: the liquid inlet (12) is connected with a liquid inlet joint (17).

9. The single use electronic endoscope of claim 1, wherein: the positioning structure is a stepped hole (18), and fixing grooves are arranged on the two sides in the radial direction of the stepped hole (18), for matching and connecting with the protrusions in the endoscope handle shell (13).

10. The disposable electronic endoscope of claim 1, wherein: the positioning structure is a limiting sheet (19), and a limiting groove (20) is arranged in the radial direction of the limiting sheet (19).

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