Endoscope sheath

Abstract

The utility model proposes a sheath for endoscope, including a connected sheath assembly and a sterile barrier, the sterile barrier is used to wrap the endoscope body and cables; the sheath assembly is used to wrap the endoscope barrel, which includes a connecting block connected to the endoscope, the connecting block is plugged with the base, the connecting block can move relative to the base along the plugging direction, but cannot rotate relative to the base, the rotating locking seat is sleeved on the base, the rotating locking seat can rotate relative to the base, a cylindrical boss is provided on the outer surface of the connecting block, a spiral rectangular thread is provided on the inner wall of the rotating locking seat along the circumferential direction, the cylindrical boss cooperates with the rectangular thread, the cylindrical boss slides in the rectangular thread, when the rotating locking seat is rotated, the connecting block moves downward or upward relative to the base; the base is also connected to the sleeve, the sleeve is used to cover the endoscope barrel, and a protective lens is provided at the end of the sleeve. The above-mentioned sheath for endoscope can isolate the contact between the human body and the endoscope, and achieve the effect of sterile isolation.

Description

Technical Field

[0001] The utility model relates to the field of medical technology, in particular to a sheath for an endoscope. Background Art

[0002] An endoscope is a device equipped with an imaging device at the front end, which enters the human body through natural channels or small incisions made during surgery. When used, the endoscope is introduced into the organ to be examined, and images of the lesion site can be directly viewed, which can help doctors to more comprehensively examine the situation inside the cavity and perform surgery under visual conditions, greatly improving the safety of the surgery.

[0003] Endoscope sheaths are commonly used accessories for endoscopes, but the front end of traditional sheath seals is mostly made of soft, light-transmitting materials. Such a structure is not convenient for cleaning and wiping blood and mucous membranes, and may affect the clarity during surgery. In addition, traditional sheaths usually cannot compensate for the axial length of the endoscope. When there is a processing tolerance, the endoscope head end and the end of the sheath may not fit together. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the present application proposes a sheath for an endoscope.

[0005] In order to achieve the above-mentioned purpose, the present application proposes an endoscope sheath, comprising a connected sheath assembly and a sterile barrier, wherein the sterile barrier is a transparent plastic tube film, which is used to wrap the endoscope body and cables therein; the sheath assembly is used to wrap the endoscope barrel, and comprises a connecting block connected to the endoscope, and the connecting block is also plugged together with the base, and the connecting block can move relative to the base along the plugging direction, recorded as the up and down direction, but the connecting block cannot rotate relative to the base, and the rotating locking seat is sleeved on the base, and the rotating The locking seat can rotate relative to the base, and a cylindrical boss is provided on the outer surface of the connecting block. A spiral rectangular thread is provided on the inner wall of the rotating locking seat along the circumferential direction. The cylindrical boss cooperates with the rectangular thread, and the cylindrical boss slides in the rectangular thread. When the rotating locking seat is rotated, the cylindrical boss moves downward or upward, thereby driving the connecting block to move downward or upward relative to the base; the base is also connected to a sleeve, and the sleeve is used to cover the endoscope barrel. A protective lens is provided at the end of the sleeve.

[0006] In some embodiments, the base includes a substrate, the sterile barrier is connected to the substrate, the upper surface of the substrate is provided with a first connecting portion for plugging with the connecting block, a retaining ring groove is provided along the circumferential direction on the outer surface of the first connecting portion, a retaining ring groove is provided with a retaining ring, a bearing platform is provided along the circumferential direction on the inner wall of the rotating locking seat, a gasket and a spring are sequentially provided between the retaining ring and the bearing platform along the direction from top to bottom, and the gasket and the spring are both sleeved on the first connecting portion; a second connecting portion is provided on the lower surface of the substrate, and the second connecting portion is connected to the sleeve.

[0007] In some embodiments, the interior of the first connecting portion is hollow to form an accommodating cavity, and a positioning portion is provided at the inner wall of the first connecting portion protruding toward the accommodating cavity. A positioning groove is provided in the positioning portion for use with a positioning column arranged on the lower surface of the connecting block to achieve that the connecting block can move relative to the base along the plug-in direction, but the connecting block cannot rotate relative to the base.

[0008] In some embodiments, a lens sheath is further provided to cover the end of the sleeve.

[0009] The beneficial effect of the scheme of the present application is that the above-mentioned endoscope sheath is a disposable sterile sheath, which wraps the endoscope to isolate the contact between the human body and the endoscope, and can achieve the effect of sterile isolation; the front end of the sheath is made of hard glass, and blood and mucous membranes can be cleaned by wiping during surgery, which greatly improves the duration of clarity during surgery. The sheath can achieve seamless fitting between the endoscope lens and the sheath protective lens, and the anti-reflective lens can greatly improve the light penetration, avoid the influence of refraction and reflection on the line of sight, and ensure the angular resolution and illumination of the endoscope after the sheath is installed. In addition, the elastic stroke of the spring can compensate for the axial length of the endoscope, thereby avoiding the occurrence of the problem of misfit between the endoscope head end and the protective lens caused by processing tolerances, thereby ensuring the optical performance of the endoscope. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic diagram showing the use status of the endoscope sheath in the embodiment is shown.

[0011] Figure 2 A schematic diagram of the main structure of the sheath assembly in the embodiment is shown.

[0012] Figure 3 A three-dimensional structural schematic diagram of the sheath assembly in the embodiment is shown.

[0013] Figure 4 A schematic structural diagram of a connection block in an embodiment is shown.

[0014] Figure 5A schematic structural diagram of a base in an embodiment is shown.

[0015] Figure 6 A schematic diagram of the three-dimensional structure of the rotating locking seat in the embodiment is shown.

[0016] Figure 7 A schematic cross-sectional structure diagram of the rotary locking seat in the embodiment is shown.

[0017] Figure 8 A schematic diagram showing the connection relationship between the rotating locking seat, the retaining spring, the gasket, the spring and the base in the embodiment is shown.

[0018] Fig. 9 A schematic diagram showing the connection relationship between the lens barrel and the protective lens of the endoscope in the embodiment is shown.

[0019] Figure markings: A-sheath assembly, B-sterile barrier, C-endoscope, D-endoscope barrel, 1-connecting block, 2-base, 3-rotating locking seat, 4-sleeve, 5-lens cover, 6-circlip, 7-gasket, 8-spring, 9-protective lens, 10-fitting surface between endoscope barrel and protective lens, 101-cylindrical boss, 102-positioning column, 201-base plate, 202-first connecting part, 203-positioning part, 204-circlip groove, 205-second connecting part, 301-rectangular thread, 302-bearing platform. DETAILED DESCRIPTION

[0020] The specific implementation of the present application is further described below in conjunction with the accompanying drawings.

[0021] In the description of the present application, it should be understood that the terms "first", "second", etc. are used to distinguish similar objects, rather than to describe or indicate a specific order or sequence. The terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0022] like Figures 1 to 9 As shown, the endoscope sheath involved in the present application includes a sheath assembly A and a sterile barrier B that are connected to each other. Specifically, the two can be bonded together by glue. The sterile barrier B is a transparent plastic tube film, which wraps the main body and cables of the endoscope C and has antibacterial, hydrophobic and other properties.

[0023] The sheath assembly A is used to wrap the barrel of an endoscope C, and includes a connecting block 1 connected to the endoscope C. The connecting block 1 is also plugged into a base 2. The connecting block 1 can move relative to the base 2 along the plugging direction (up and down direction), but the connecting block 1 cannot rotate relative to the base 2. A rotating locking seat 3 is sleeved on the base 2, and the rotating locking seat 3 can rotate relative to the base 2. A cylindrical boss 101 is provided on the outer surface of the connecting block 1, and a spiral rectangular thread 301 is provided on the inner wall of the rotating locking seat 3 along the circumferential direction. The cylindrical boss 101 cooperates with the rectangular thread 301, and the cylindrical boss 101 slides in the rectangular thread 301. When the rotating locking seat 3 is rotated, the cylindrical boss 101 is in the rectangular thread 301, so that the cylindrical boss 101 moves downward or upward, thereby driving the connecting block 1 to move downward or upward relative to the base 2. The base 2 is also connected to a sleeve 4 , which is used to cover an endoscope barrel D. A protective lens 9 is provided at the end of the sleeve 4 , and a lens sheath 5 is provided to cover the end of the sleeve 4 .

[0024] In this embodiment, the base 2 includes a substrate 201, and the sterile barrier B is connected to the substrate 201. The upper surface of the substrate 201 is provided with a first connecting part 202 for plugging with the connecting block 1. The interior of the first connecting part 202 is hollow to form an accommodating cavity. The inner wall of the first connecting part 202 is provided with a positioning part protruding toward the accommodating cavity. The positioning part is provided with a positioning groove for use with a positioning column 102 arranged on the lower surface of the connecting block 1, so that the connecting block 1 can move relative to the base 2 along the plug-in direction (recorded as the up and down direction), but the connecting block 1 cannot rotate relative to the base 2; and the above-mentioned structural design has an error-proofing effect to prevent the connecting block 1 and the base 2 from being incorrectly assembled.

[0025] A retaining spring groove 204 is circumferentially provided on the outer surface of the first connecting part 202, a retaining spring 6 is provided at the retaining spring groove 204, a bearing platform 302 is circumferentially provided on the inner wall of the rotating locking seat 3, a gasket 7 and a spring 8 are sequentially provided between the retaining spring 6 and the bearing platform 302 along the direction from top to bottom, the gasket 7 and the spring 8 are both mounted on the first connecting part 202, and the rotating locking seat 3 can rotate relative to the base 2.

[0026] A second connecting portion 205 is provided on the lower surface of the substrate 201, and through holes are provided in the first connecting portion 202, the substrate 201 and the second connecting portion 205 so that the endoscope barrel D can pass through. The second connecting portion 205 is connected to the sleeve 4, and the sleeve 4 is used to cover the endoscope barrel D. A protective lens 9 is provided at the end of the sleeve 4, and a lens cover 5 is also provided to cover the end of the sleeve 4.

[0027] In the specific use process, the endoscope C is first connected and fixed to the connecting block 1, and then the connecting block 1 is inserted into the base 2 to constrain the rotation of the endoscope C. Then, the locking seat 3 is rotated in the set direction, and the displacement of the connecting block 1 along its axial direction is constrained by the cooperation of the cylindrical boss 101 on the connecting block 1 and the rectangular thread 301 in the locking seat 3, thereby ensuring that there is no relative displacement between the endoscope and the sheath. The elastic stroke of the spring 8 can compensate for the axial length of the endoscope, thereby avoiding the occurrence of the problem of the endoscope head end and the protective lens 9 not fitting due to processing tolerance (still applicable when the endoscope head end is at an angle to the axial direction), thereby ensuring the optical performance of the endoscope.

[0028] The endoscope sheath involved in the present application is a disposable sterile sheath, which is used to wrap the endoscope to isolate the contact between the human body and the endoscope, and can achieve the effect of sterile isolation; the front end of the sheath is made of hard glass, and blood and mucous membranes can be cleaned by cleaning and wiping during the operation, which greatly improves the duration of clarity during the operation. The sheath can achieve seamless fitting between the endoscope lens and the sheath protective lens, and the anti-reflective lens can greatly improve the light penetration, avoid the influence of refraction and reflection on the line of sight, and ensure the angular resolution and illumination of the endoscope after the sheath is installed. In addition, the elastic stroke of the spring can compensate for the axial length of the endoscope, thereby avoiding the occurrence of the problem of misfit between the endoscope head end and the protective lens caused by processing tolerances, thereby ensuring the optical performance of the endoscope.

[0029] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes according to the technical solution and concept of the present application within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A sheath for an endoscope, characterized in that: The invention comprises a sheath assembly and a sterile barrier connected to each other, wherein the sterile barrier is a transparent plastic tube film, which is used to wrap the main body and cables of the endoscope; the sheath assembly is used to wrap the endoscope barrel, and comprises a connecting block connected to the endoscope, the connecting block is also plugged together with the base, the connecting block can move relative to the base along the plugging direction, recorded as the up and down direction, but the connecting block cannot rotate relative to the base, a rotating locking seat is sleeved on the base, the rotating locking seat can rotate relative to the base, a cylindrical boss is provided on the outer surface of the connecting block, a spiral rectangular thread is provided on the inner wall of the rotating locking seat along the circumferential direction, the cylindrical boss cooperates with the rectangular thread, the cylindrical boss slides in the rectangular thread, and when the rotating locking seat is rotated, the cylindrical boss moves downward or upward, thereby driving the connecting block to move downward or upward relative to the base; the base is also connected to a sleeve, the sleeve is used to cover the endoscope barrel, and a protective lens is provided at the end of the sleeve.

2. The endoscope sheath according to claim 1, characterized in that: The base includes a substrate, the sterile barrier is connected to the substrate, the upper surface of the substrate is provided with a first connecting portion for plugging with the connecting block, a retaining ring groove is provided along the circumferential direction on the outer surface of the first connecting portion, a retaining ring groove is provided with a retaining ring, a bearing platform is provided along the circumferential direction on the inner wall of the rotating locking seat, a gasket and a spring are provided in sequence between the retaining ring and the bearing platform along the direction from top to bottom, and the gasket and the spring are both sleeved on the first connecting portion; a second connecting portion is provided on the lower surface of the substrate, and the second connecting portion is connected to the sleeve.

3. The endoscope sheath according to claim 2, characterized in that: The interior of the first connecting part is hollow to form a accommodating cavity. A positioning part is protruding from the inner wall of the first connecting part toward the accommodating cavity. A positioning groove is provided in the positioning part for use with a positioning column arranged on the lower surface of the connecting block to enable the connecting block to move relative to the base along the plug-in direction, but the connecting block cannot rotate relative to the base.

4. The endoscope sheath according to claim 1, characterized in that: A lens sheath is also provided for covering the end of the sleeve.

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