CN109998472B

CN109998472B - Room corner observation mirror

Info

Publication number: CN109998472B
Application number: CN201910393821.9A
Authority: CN
Inventors: 周伟; 胡建明; 邓先辉; 向仕川
Original assignee: Chongqing Xinguang Medical Devices Co ltd
Current assignee: Chongqing Xinguang Medical Devices Co ltd
Priority date: 2019-05-13
Filing date: 2019-05-13
Publication date: 2021-05-28
Anticipated expiration: 2039-05-13
Also published as: CN109998472A

Abstract

The invention discloses a room angle observation mirror, which comprises a mirror bracket and a lens arranged on the mirror bracket, wherein the mirror bracket comprises a handle, a floating support and a stabilizing piece, the handle, the floating support and the stabilizing piece form a suspended mirror bracket together, so that the lens can be stably and floatingly arranged above an eyeball, the mounting end of the handle for mounting the lens is hinged with the floating support which can rotate in a certain range, one end of the floating support is hinged with the lens which can rotate in the certain range, and the stabilizing piece is directly contacted with the eyeball and limits the relative position between the lens and the eyeball; the end of the lens towards the eyeball is a concave surface, the end of the lens away from the eyeball is a convex surface which is aspheric, and the optical axes of the concave surface and the convex surface are not coaxial, namely the off-axis lens optical framework. The observation mirror is very convenient to use in glaucoma surgery, and ensures smooth and rapid operation of the surgery.

Description

Room corner observation mirror

Technical Field

The invention belongs to the technical field of glaucoma surgery, and particularly relates to an observation mirror used in glaucoma surgery.

Background

Glaucoma is the first causative factor in the current ophthalmic diseases. The examination and treatment of glaucoma disease requires detailed examination and surgical operation of the tissue of the angle of the eye. The handle of camera lens installation among the prior art, simple structure because the size restriction of observation mirror itself, is difficult to design more rotation control mechanism and obtains good flexibility ratio to acquire the operating position of observation mirror fast, more can not adapt to the removal of patient's eyeball in certain extent in the operation. In addition, the existing optical system for examining the room angle mainly adopts a fixed contact type reflector, and the lens of the optical system adopts the reflector for imaging, so that the imaging is a left mirror image and a right mirror image, and the direction of the imaging is opposite to the operation direction of a doctor, so that the optical system is not suitable for being used in the operation. For the above reasons, the current operation observation mirror for glaucoma has poor flexibility and stability when in use, and is difficult to quickly locate the lens at a preset position, which causes inconvenience in operation.

Disclosure of Invention

The invention aims to solve the technical problems, and effectively solves the technical problems of poor adaptability of lens position adjustment and inconvenience in operation caused by the fact that the operation direction is opposite to the lens imaging direction in the operation process of a doctor by adopting the design of the suspension mirror bracket and the off-axis lens optical framework.

The technical scheme of the invention is as follows:

a room angle observation mirror comprises a mirror frame and a lens installed on the mirror frame, wherein the mirror frame comprises a handle, a floating support and a stabilizing piece, the handle, the floating support and the stabilizing piece form a suspended mirror frame together, so that the lens can be stably installed above an eyeball in a floating mode, the installation end, used for installing the lens, of the handle is hinged to the floating support, the floating support can rotate in a certain range, one end of the floating support is hinged to the lens, the lens can rotate in the certain range, and the stabilizing piece is in direct contact with the eyeball and limits the relative position between the lens and the eyeball;

the end of the lens towards the eyeball is a concave surface, the end of the lens away from the eyeball is a convex surface which is aspheric, and the optical axes of the concave surface and the convex surface are not coaxial, namely the off-axis lens optical framework.

The invention has the beneficial effects that: the invention has the advantages that the lens has more flexible freedom through the limited articulation between the floating bracket and the handle and the limited articulation between the lens and the floating bracket, can be rapidly moved to the optimal position for observing the angle of the room, and is matched with and maintains the working position of the lens through the stabilizing piece which also has the limited articulation, so that the observation mirror is very convenient to use in the glaucoma operation, and the observation position can be rapidly adjusted. The lens is concave towards the eyeball and the observation end is aspheric convex, and the convex surface and the concave surface optical axis are designed in a centrifugal mode, so that a room angle with a larger angle to the eyeball optical axis can be organized into an upright virtual image, and the observation angle and the observation direction of a doctor are very favorable for operation implementation.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic view of a lens structure.

Fig. 3 is a schematic view of the handle separated from the floating mount.

Fig. 4 is a partial structural diagram of the present invention when the lens is removed.

Fig. 5 is a schematic view of the hinged connection of the stabilizing ring with the protrusions to the handle notch.

Fig. 6 is a schematic diagram of the present invention.

Fig. 7 is an optical schematic diagram of the lens barrel.

Element number description: the lens assembly 6 of the invention, the angle tissue 7 of the anterior chamber of the eyeball, the crystalline lens 8, the anterior chamber 9, the cornea 10, the eyeball 11, the convex surface 12, the convex optical axis 13, the concave surface 14, the concave optical axis 15, the eccentric distance 16 of the convex surface and the concave surface, the groove 101, the articulated shaft 102, the notch 103, the step surface 104, the inclined surface 201 which inclines upwards, the ear plate 401, the bulge 501, the position A of the angle tissue which needs to be imaged and the position A' of the right vertical virtual image formed by the angle tissue passing through the lens.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

a room angle observation mirror comprises a mirror frame and a lens 3 arranged on the mirror frame, and can adopt but not limited to optical glass and optical plastic, which is different from the prior room angle observation mirror: as shown in fig. 1 and 3-4, the frame comprises a handle 1, a floating bracket 2 and a stabilizer 5, which together form a floating frame for mounting and controlling the position of the lens 3. In the suspension spectacle frame, the mounting end of a handle 1 for mounting a lens 3 is hinged with a floating support 2 which can rotate in a certain range, one end of the floating support 2 is hinged with the lens 3 which can rotate in a certain range, and a stabilizing piece 5 is in direct contact with an eyeball 11 and limits the relative position between the lens 3 and the eyeball 11, so that the lens 3 can be better arranged above the eyeball 11 in an overhead manner after the position is determined, and the surgical observation is facilitated. The corresponding components in this embodiment rotate within a certain range, and the rotation range is set according to specific needs, and the specific range values are not particularly exemplified in this embodiment.

In particular, the lens 3 of the present embodiment is of eccentric design (eccentric design), that is, as shown in fig. 1-2, the end of the lens 3 facing the eyeball 11 is a concave surface 14, and the concave surface 14 can be a spherical surface or an aspheric surface, while importantly, the end of the lens 3 facing away from the eyeball 11, that is, the observation end of the lens 3 during the operation of the doctor, is a convex surface 12 which is aspheric, and the mirror surface here can not be selected to be spherical or aspheric like the concave surface 14, but only the mirror surface of the convex surface 12 which is aspheric can be selected, so as to control the aberration and the imaging quality well. And the optical axes of the concave surface 14 and the convex surface 12 are not coaxial, i.e. the optical structure of the off-axis lens (off-axis design structure), the specific optical principle diagram is shown in fig. 7. For a better understanding of the optical principles of the present lens 3, in connection with the state of practical use of the present invention, with reference to fig. 6, the angle tissue 7 of the anterior chamber 9 of the eyeball 11 (the major ocular lesion causing glaucoma) is located in a narrow region between the cornea 10 and the crystalline lens 8 of the eye, i.e. the edge portion of the anterior chamber 9. Because the included angle between the reflection prism and the eye axis is larger and difficult to observe, the reflection prism forming a certain angle with the eye axis is mostly adopted for examination in the prior art, but the reflection image is formed into a mirror image with the actual imaged image, so the direction of the space coordinate of the operation of a doctor is opposite to that of the space coordinate of the operation of the doctor, and the reflection prism can not be used for observation in the operation, so the application of the reflection prism is limited, and the operation use can not be met. In the embodiment, the imaging coordinate direction of the refractive-type centrifugal-axis lens system is consistent with that of the actual tissue, so that observation in the operation can be performed, the operation efficiency related to glaucoma is greatly improved, and gospel is brought to patients. With the optical system of the present embodiment, the expression of the aspherical mirror surface can be calculated by the following formula:

wherein, X: face vector height coordinate values (optical axis direction); y: lens caliber (perpendicular to optical axis radius direction); c: a radius of curvature of the substrate; k: a conic constant; an: coefficient of the n-th order term.

When the observation mirror provided by the embodiment is used specifically, the floating support 2 can rotate to a certain angle relative to the handle 1 according to needs, the lens 3 can rotate to a certain angle on the floating support 2 and finally is matched with the stabilizing piece 5 to rotate to a position contacted with the lower end of the lens 3, so that the lens 3 is rapidly positioned at a proper operation observation position, the floating support 2, the lens 3 and the stabilizing piece 5 are hinged but not completely and freely rotated, and have certain hinge angles respectively to match the observation angle of a room corner and rapidly reach the observation position. The lens 3 of this embodiment can comparatively steadily erect empty setting on eyeball 11 and under the condition of eyeball 11 motion, guarantee that the mirror body floats with eyeball 11 is synchronous, guarantee the stability of its formation of image, very big promotion the convenience of operation.

As an embodiment, as shown in fig. 3, the mounting end of the handle 1 has a U-shaped groove 101 along its length, and the groove 101 can be milled in a manner similar to a keyway mill. The other end of the floating support 2 is movably inserted into the groove 101 from the opening end of the U-shaped structure of the groove 101 and is hinged in the groove 101, during specific manufacturing, the hinging can be realized by matching the hinging shaft 102 with the strip-shaped waist hole on the floating support 2, the end surface of the end of the floating support 2 facing the bottom surface of the groove 101 is provided with an inclined surface 201 which inclines upwards, when the floating support 2 rotates upwards, the inclined surface is contacted with the groove bottom of the groove 101, the rotating and upward angle of the floating support 2 can be limited, and the purpose that the floating support 2 rotates in a certain range is achieved.

As an example, as shown in fig. 3-4, as an embodiment of the floating bracket 2 hinged to the handle 1, two side walls of the groove 101 respectively extend forward along the length direction thereof to form a gap 103; the floating support 2 is in a slingshot-shaped fork-shaped structure, and the lens 3 is hinged in a fork opening of the fork-shaped structure and can rotate at a corresponding angle. The structure is simple and reliable in design, is a connecting structure which can better realize the hinging of the floating support 2 and the handle 1, and is easy to manufacture and use.

As an embodiment, as a specific hinging mode of the lens 3, as shown in fig. 4, the collar 4 is annularly hooped on the outer wall of the lens 3 to tightly clasp the lens 3 well, and a foundation is laid for realizing the hinging of the lens 3 through the hinging of the collar 4, two opposite points on the collar 4 are respectively and correspondingly hinged on two inner side walls of the fork mouth, so that the lens 3 is hinged with the floating bracket 2, the whole device is also simple in structure, and the requirement of selective suspension erection of the lens 3 in a small space is met; on the basis, in order to realize the function of the lens 3 that the lens 3 can be hinged in a certain range, as a specific embodiment, as shown in fig. 4, the outer side wall of the groove 101 of the collar 4 close to the handle 1 is provided with a lug plate 401 that is arranged in a protruding way, when the lens 3 rotates, the lug plate 401 is limited due to the contact with the stabilizing piece 5 and the fork mouth edge, so that the lens 3 can rotate in a large range without constraint, the eyeball 11 is protected, and the approximate position of the lens 3 is rapidly controlled.

As an example, as shown in fig. 4 to 5, the stabilizer 5 is hinged at the free ends of the two side walls of the notch 103, so as to optimize the structure and better assist in controlling the position of the lens 3 at the mounting end. And further, as an embodiment, the stabilizer 5 is a circular arc-shaped stabilizer ring, and the shape can be better matched with the shape of the eyeball 11. The concave surface 14 end of the lens 3 is always positioned in the stabilizing ring and connected with the inner side wall of the stabilizing ring when the lens 3 rotates, namely, the lens 3 is restrained to a certain degree to be adapted to the room angle position of the eyeball 11 and the occasional movement of the eyeball 11, the lens 3 rotates adaptively when the eyeball 11 moves, and the lens 3 is arranged above the eyeball 11 in a floating manner, so that the observation is facilitated. And in order that the lens 3 does not directly collide with the eyeball 11 to affect observation, the concave surface 14 end of the lens 3 does not extend out of the stable ring when the lens 3 rotates. In a preferred embodiment, the stabilizing ring has a plurality of protrusions 501 directly contacting the eyeball 11 along a circumferential direction thereof on an end surface of the eyeball 11, so that a contact area between the stabilizing ring and the eyeball 11 is smaller, the contact area distribution is not too dense, interference with the eyeball 11 is reduced, and the movement following the eyeball 11 is better, and in order to further optimize the effect, the protrusions 501 are conical, and a small end thereof directly contacts the eyeball 11 and an end surface thereof is spherical.

As an example, as shown in fig. 3 and 5, in order to realize the limited hinging function of the stabilizer 5 (stabilizer ring) to rotate only in a proper range, two side walls of the groove 101 respectively extend forwards along the length direction thereof to form a gap 103, and the free ends of the two extending sections are respectively provided with an inclined step which is designed as an inclined plane or a combination of multiple planes according to requirements, two opposite side walls of the stabilizer ring are respectively hinged at the two steps, and the rotation of the stabilizer ring is limited within a certain angle range due to the contact with the step surface 104 of the step.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a room angle sight glass, includes the mirror holder and installs the camera lens on the mirror holder, its characterized in that: the spectacle frame comprises a handle, a floating support and a stabilizing piece, wherein the floating support capable of rotating in a certain range is hinged to the mounting end of the handle for mounting the lens, the lens capable of rotating in a certain range is hinged to one end of the floating support, and the stabilizing piece is in direct contact with the eyeball and limits the relative position between the lens and the eyeball;

the lens is characterized in that one end of the lens facing towards the eyeball is a concave surface, one end of the lens facing away from the eyeball is a convex surface with an aspheric surface, and the optical axes of the concave surface and the convex surface are not coincident.

2. The room angle viewer of claim 1, wherein: the mounting end is provided with a U-shaped groove along the length direction; the other end of the floating support is movably inserted into the groove from the opening end of the U-shaped structure of the groove and hinged in the groove, an inclined surface which inclines upwards is arranged on the end surface of the end of the floating support towards the bottom surface of the groove bottom of the groove, and the inclined surface is contacted with the groove bottom of the groove when the floating support rotates upwards so as to limit the rotating and lifting angle of the floating support.

3. The room angle viewer of claim 2, wherein: two side walls of the groove respectively extend forwards along the length direction of the groove to form a gap; the floating support is of a slingshot-shaped fork-shaped structure, and the lens is hinged in a fork opening of the fork-shaped structure and can rotate at a corresponding angle.

4. The room angle viewer of claim 3, wherein: the outer wall of the lens is annularly hooped with a clamping ring, and two opposite points on the clamping ring are correspondingly hinged to two inner side walls of the fork opening respectively so that the lens is hinged to the floating support.

5. The room angle viewer of claim 4, wherein: the outer side wall of the clamping ring close to the handle groove is provided with a lug plate which is arranged in a protruding mode, and the lug plate is limited due to the fact that the lug plate is in contact with the stabilizing piece and the fork opening edge when the lens rotates.

6. The room angle viewer of claim 3, wherein: the stabilizing members are hinged at the free ends of the two side walls of the gap.

7. The room angle viewer of claim 2, wherein: the stabilizing piece is a circular arc strip-shaped stabilizing ring, the concave surface end of the lens is always positioned in the stabilizing ring and connected with the inner side wall of the stabilizing ring when the lens rotates, and the concave surface end of the lens does not extend out of the stabilizing ring when the lens rotates.

8. The room angle viewer of claim 7, wherein: the end surface of one side of the stabilizing ring facing towards the eyeball is provided with a plurality of bulges which are directly contacted with the eyeball along the circumferential direction.

9. The room angle viewer of claim 8, wherein: the bulge is conical, the small end of the bulge is in direct contact with the eyeball, and the end face of the small end is spherical.

10. The room angle viewer of claim 7, wherein: the two side walls of the groove respectively extend forwards along the length direction of the groove to form a gap, the free ends of the two extending sections are respectively provided with an inclined step, the two opposite side walls of the stabilizing ring are respectively hinged at the two steps, and the stabilizing ring can be limited within a certain angle range due to the fact that the stabilizing ring can be in contact with the step surfaces of the steps when rotating.