Optical bayonet

Abstract

The utility model relates to an optical bayonet, which comprises a bayonet main body with a cylindrical structure and an optical structure arranged in an inner cavity of the bayonet main body, the optical structure comprises a lens cone coaxially arranged with the bayonet main body, and a glass lens group is arranged in the lens cone; a focusing structure is arranged on the peripheral side portion of the bayonet body and drives the lens cone to move in the axial direction of the bayonet body, and an endoscope connecting structure is arranged at the front end of the bayonet body. The bayonet body and the rotatable adjusting ring are of a split type structure, assembling and manufacturing are easy, all repeated optical bayonet functions are met, a disposable hard endoscope eyepiece cover and the optical bayonet are integrated, the operation difficulty is effectively lowered, and material assembling loss is reduced.

Description

Technical fields:

[0001] This utility model belongs to the field of optical disposable rigid endoscope mount technology, and particularly relates to an optical mount. Background technology:

[0002] Disposable rigid endoscopes, similar to traditional rigid endoscopes, use an optical system to transmit images of internal tissues or organs to an external monitor. Unlike traditional reusable endoscopes, disposable rigid endoscopes are designed to reduce the risk of cross-infection and do not require cumbersome disinfection and maintenance procedures. During use, the eyepiece cap of the disposable rigid endoscope must be connected to the endoscope's optical bayonet before connecting to the camera to transmit images to the light source. The connection between the disposable rigid endoscope eyepiece cap and the endoscope's optical bayonet not only increases the difficulty of operation but also poses a risk of damage to both during the connection process. Furthermore, when using the optical bayonet with a disposable rigid endoscope, the separate use of the reusable optical bayonet requires disinfection, which consumes significant time and resources. Therefore, it is necessary to improve upon these technical issues, hence this case. Utility Model Content:

[0003] This utility model addresses the problems existing in the prior art by providing an optical bayonet with a reasonable design that effectively reduces design, development, and sterilization costs.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an optical bayonet, comprising a bayonet body with a cylindrical structure and an optical structure disposed within the cavity of the bayonet body. The optical structure includes a lens barrel coaxially disposed with the bayonet body, and a glass lens group is disposed inside the lens barrel. A focusing structure is disposed on the peripheral side of the bayonet body, and the focusing structure drives the lens barrel to move along the axial direction of the bayonet body. An endoscope connection structure is disposed at the front end of the bayonet body.

[0005] Furthermore, the focusing structure includes a rotatable adjusting ring and a guide pin. The rotatable adjusting ring is rotatably sleeved on the outside of the mount body. An arc-shaped groove is provided on the periphery of the mount body, and the arc-shaped groove runs radially through the mount body. The guide pin passes through the arc-shaped groove and slides with it. The inner end of the guide pin is screwed to the lens barrel, and the outer end of the guide pin is screwed to the rotatable adjusting ring. When the rotatable adjusting ring rotates, it drives the guide pin to slide along the arc-shaped groove, and the guide pin drives the lens barrel to move axially along the mount body.

[0006] Furthermore, the inner cavity of the bayonet body is a stepped through hole, and the inner cavity of the bayonet body consists of a front hole, a middle hole, and a rear hole from front to back. The inner diameters of the front hole and the rear hole are both larger than the inner diameter of the middle hole. The lens barrel is slidably disposed in the middle hole.

[0007] Furthermore, a front pressure ring is fitted on the outer front end of the bayonet body, and the rear end of the front pressure ring extends into the interior of the rotatable adjusting ring; an eyepiece cover is inserted into the front hole, and a locking cover is fitted on the outer rear end of the eyepiece cover. The rear end of the locking cover abuts against the inner peripheral step surface of the front pressure ring, and the locking cover is threadedly connected to the outer front end of the bayonet body. The locking cover presses against the step surface of the peripheral side of the eyepiece cover to fix the eyepiece cover.

[0008] Furthermore, a first sealing ring is provided between the rear peripheral side of the front pressure ring and the inner peripheral side of the rotatable adjusting ring; a second sealing ring is provided between the eyepiece cover and the rear end face of the front hole.

[0009] Furthermore, an annular flange is provided on the outer peripheral side of the rear end of the bayonet body, the rear end of the rotatable adjusting ring abuts against the front end of the annular flange, and a third sealing ring is provided between the inner peripheral side of the rear end of the rotatable adjusting ring and the outer peripheral side of the bayonet body.

[0010] Furthermore, a glass window is provided inside the rear end hole, a fourth sealing ring is provided between the glass window and the front end face of the rear end hole, and a tail pressure ring is provided on the rear side of the glass window, which is threadedly connected to the inner circumferential side wall of the rear end hole.

[0011] Furthermore, the outer peripheral side of the rear end of the bayonet body is provided with an external thread, which is used to connect with the camera to form a C-type interface structure.

[0012] Furthermore, the glass lens group is formed by combining multiple lenses.

[0013] Furthermore, a lens retaining ring for locking the glass lens assembly is screwed to the rear end of the lens barrel, and the front end of the glass lens assembly abuts against the stepped surface on the inner periphery of the lens barrel.

[0014] Compared with the prior art, the present invention has the following advantages: The present invention is reasonably designed, with the bayonet body and the rotatable adjustment ring being separate structures, which makes assembly and manufacturing simple, meets all repetitive optical bayonet functions, and integrates the disposable rigid endoscope eyepiece cover and optical bayonet into one unit, effectively reducing the difficulty of operation and reducing material assembly losses. Attached image description:

[0015] Figure 1 This is a schematic diagram of the front cross-sectional structure of an embodiment of the present utility model;

[0016] Figure 2 This is an exploded view of an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the usage state of an embodiment of this utility model.

[0018] In the picture:

[0019] 1-Locking cap; 2-Eyepiece cover; 3-Front end pressure ring; 4-First sealing ring; 5-Second sealing ring; 6-Rotating adjusting ring; 7-Bayonet body; 8-Guide pin; 9-Endoscope tube; 10-Fourth sealing ring; 11-Glass lens assembly; 12-Lens pressure ring; 13-Glass window; 14-Tail pressure ring; 15-Arc-shaped groove; 16-Front end hole; 17-Middle end hole; 18-Rear end hole; 19-Annular flange; 20-Third sealing ring; 21-External thread; 22-Disposable rigid endoscope. Detailed implementation method:

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] like Figures 1-3 As shown, this utility model discloses an optical bayonet, comprising a cylindrical bayonet body 7 and an optical structure disposed within the cavity of the bayonet body 7. The optical structure includes a lens barrel 9 coaxially arranged with the bayonet body 7, and a glass lens group 11 disposed inside the lens barrel 9. A focusing structure is provided on the periphery of the bayonet body 7, and the focusing structure drives the lens barrel 9 to move along the axial direction of the bayonet body 7. An endoscope connection structure is provided at the front end of the bayonet body 7. The bayonet body and the rotatable adjusting ring are separate structures, which simplify assembly and manufacturing, meet all repetitive optical bayonet functions, and integrate the disposable rigid endoscope eyepiece cover and the optical bayonet into one unit, effectively reducing operational difficulty and material assembly waste.

[0023] In this embodiment, the focusing structure includes a rotatable adjusting ring 6 and a guide pin 8. The rotatable adjusting ring 6 is rotatably sleeved on the outside of the bayonet body 7. The periphery of the bayonet body 7 is provided with an arc-shaped sliding groove 15, which runs radially through the bayonet body 7. The guide pin 8 passes through the arc-shaped sliding groove 15 and slides in cooperation with it. The inner end of the guide pin 8 is screwed into a threaded hole on the periphery of the lens barrel 9, and the outer end of the guide pin 8 is screwed into a coarse threaded hole inside the rotatable adjusting ring 6. When the rotatable adjusting ring 6 rotates, it drives the guide pin 8 to slide along the arc-shaped sliding groove 15. The guide pin 8 drives the lens barrel 9 to move axially along the bayonet body 7 to achieve focusing.

[0024] In this embodiment, the inner cavity of the bayonet body 7 is a stepped through hole that runs through the front and rear directions. The inner cavity of the bayonet body consists of a front hole 16, a middle hole 17, and a rear hole 18 from front to back. The inner diameters of the front hole 16 and the rear hole 18 are both larger than the inner diameter of the middle hole 17. The lens barrel 8 is slidably disposed in the middle hole 17.

[0025] In this embodiment, a front retaining ring 3 is fitted onto the outer front end of the bayonet body 7, and the rear end of the front retaining ring 3 extends into the rotatable adjusting ring 6. A disposable rigid endoscope eyepiece cover 2 is inserted into the front hole 16, and a locking cover 1 is fitted onto the outer rear end of the eyepiece cover 2. The rear end of the locking cover 1 abuts against the inner circumferential step surface of the front retaining ring 3. The locking cover 1 is threadedly connected to the outer front end of the bayonet body 7, and the locking cover 1 presses against the step surface of the eyepiece cover 2 to fix the eyepiece cover. The eyepiece cover 2 and the disposable rigid endoscope eyepiece shell are connected and fixed together with the disposable rigid endoscope by adhesive to form an integral unit. Integrating the disposable rigid endoscope eyepiece cover and optical bayonet into one unit effectively reduces the difficulty of operation and reduces material assembly waste.

[0026] In this embodiment, a first sealing ring 4 is provided between the rear peripheral side of the front end pressure ring 3 and the inner peripheral side of the rotatable adjusting ring 6, and a first annular groove for accommodating the first sealing ring 4 is provided on the rear peripheral side of the front end pressure ring 3; a second sealing ring 5 is provided between the eyepiece cover 2 and the rear end face of the front end hole 16, and a second annular groove for accommodating the second sealing ring 5 is provided on the rear end face of the front end hole 16 in the inner cavity of the bayonet body 7.

[0027] In this embodiment, an annular flange 19 is provided on the outer peripheral side of the rear end of the bayonet body 7, the rear end of the rotatable adjusting ring 6 abuts against the front end of the annular flange 19, a third sealing ring 20 is provided between the inner peripheral side of the rear end of the rotatable adjusting ring 6 and the outer peripheral side of the bayonet body 7, and a third annular groove for accommodating the third sealing ring is provided on the outer peripheral side of the bayonet body.

[0028] In this embodiment, a glass window 13 is provided in the rear end hole 18, a fourth sealing ring 10 is provided between the glass window 13 and the front end face of the rear end hole 18, and a tail pressure ring 14 is provided on the rear side of the glass window 13. The tail pressure ring 14 is threadedly connected to the inner circumferential side wall of the rear end hole 18, and the glass window 13 is fixed by threading the tail pressure ring to the bayonet body.

[0029] In this embodiment, the outer peripheral side of the rear end of the bayonet body 7 is provided with an external thread 21, which is used to connect with the camera to form a C-type interface structure.

[0030] In this embodiment, the glass lens group 11 consists of multiple lenses assembled in the inner hole of the lens barrel. The rear end of the lens barrel 9 is screwed with a lens retaining ring 12 for locking the glass lens group 11. The front end of the glass lens group 11 abuts against the inner peripheral stepped surface of the lens barrel 9.

[0031] In this embodiment, the optical bayonet is made entirely of medical-grade PC material and glass lens material, and can be integrated with a disposable rigid endoscope to form a single unit; compared with the disposable rigid endoscope combined with the reusable optical bayonet after surgery, there is no need to disinfect the reusable optical bayonet separately.

[0032] The advantages of this utility model are:

[0033] (1) The disposable rigid endoscope eyepiece cover and optical bayonet are integrated into one unit, which effectively reduces the difficulty of operation and reduces material assembly loss;

[0034] (2) The optical bayonet is sealed with a sealing ring inside, which can effectively prevent water splashing;

[0035] (3) The optical bayonet is made of medical PC material and glass lens and is manufactured using mold opening, which effectively reduces the development and mass production costs; and it is integrated with disposable rigid endoscope; compared with disposable rigid endoscope combined with reusable optical bayonet after surgery, there is no need to disinfect the reusable optical bayonet separately, eliminating the disinfection operation and effectively reducing medical risks and utilization costs.

[0036] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then, unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).

[0037] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0038] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. An optical bayonet, characterized in that: The device includes a cylindrical bayonet body and an optical structure disposed within the cavity of the bayonet body. The optical structure includes a lens barrel coaxially arranged with the bayonet body, and a glass lens group disposed inside the lens barrel. A focusing structure is disposed on the periphery of the bayonet body, and the focusing structure drives the lens barrel to move axially along the bayonet body. An endoscope connection structure is disposed at the front end of the bayonet body. The focusing structure includes a rotatable adjusting ring and a guide pin. The rotatable adjusting ring is rotatably sleeved on the outside of the bayonet body. An arc-shaped groove is disposed on the periphery of the bayonet body, and the arc-shaped groove extends radially along the bayonet body. The guide pin passes through the arc-shaped groove and slides with the arc-shaped groove. The inner end of the guide pin is screwed to the lens barrel, and the outer end of the guide pin is screwed to the rotatable adjusting ring. When the rotatable adjusting ring rotates, it drives the guide pin to slide along the arc-shaped groove, and the guide pin drives the lens barrel to move axially along the bayonet body.

2. The optical bayonet according to claim 1, characterized in that: The inner cavity of the bayonet body is a stepped through hole. The inner cavity of the bayonet body consists of a front hole, a middle hole, and a rear hole from front to back. The inner diameters of the front hole and the rear hole are both larger than the inner diameter of the middle hole. The lens barrel is slidably disposed in the middle hole.

3. An optical bayonet according to claim 2, characterized in that: A front pressure ring is fitted on the outer front end of the bayonet body, and the rear end of the front pressure ring extends into the interior of the rotatable adjusting ring; an eyepiece cover is inserted into the front hole, and a locking cover is fitted on the outer rear end of the eyepiece cover. The rear end of the locking cover abuts against the inner peripheral step surface of the front pressure ring, and the locking cover is threaded to the outer front end of the bayonet body. The locking cover presses against the step surface of the peripheral side of the eyepiece cover to fix the eyepiece cover.

4. An optical bayonet according to claim 3, characterized in that: A first sealing ring is provided between the rear peripheral side of the front pressure ring and the inner peripheral side of the rotatable adjusting ring; a second sealing ring is provided between the eyepiece cover and the rear end face of the front hole.

5. An optical bayonet according to claim 1, characterized in that: An annular flange is provided on the outer peripheral side of the rear end of the bayonet body. The rear end of the rotatable adjusting ring abuts against the front end of the annular flange. A third sealing ring is provided between the inner peripheral side of the rear end of the rotatable adjusting ring and the outer peripheral side of the bayonet body.

6. An optical bayonet according to claim 2, characterized in that: A glass window is provided inside the rear end hole. A fourth sealing ring is provided between the glass window and the front end face of the rear end hole. A tail pressure ring is provided on the rear side of the glass window. The tail pressure ring is threadedly connected to the inner circumferential side wall of the rear end hole.

7. An optical bayonet according to claim 1, characterized in that: The outer peripheral side of the rear end of the bayonet body is provided with an external thread, which is used to connect with the camera to form a C-type interface structure.

8. An optical bayonet according to claim 1, characterized in that: The glass lens group is formed by combining multiple lenses.

9. An optical bayonet according to claim 1, characterized in that: The rear end of the lens barrel is screwed with a lens retaining ring for locking the glass lens assembly, and the front end of the glass lens assembly abuts against the stepped surface on the inner circumference of the lens barrel.

Images