Triangular prism strabismus degree measuring device

Abstract

The utility model discloses a triangular prism strabismus degree measuring device which comprises a disc support and a triangular prism disc, a plurality of block-shaped triangular prisms with different degrees are fixed to the triangular prism disc, the disc support and the triangular prism disc are stacked, and a connecting structure used for enabling the triangular prism disc to rotate relative to the disc support is arranged in the center of the disc support and the triangular prism disc. Preferably, the device further comprises a supporting frame and a fixing frame, the fixing frame is used for being fixed to the rod-shaped structure, and the supporting frame is connected with the disc support and the fixing frame and used for fixing the disc support to the rod-shaped structure through the fixing frame. Compared with the prior art, the triangular prism strabismus degree measuring device has the advantages that the triangular prism can be stably fixed, the degrees can be quickly switched, and the angle can be accurately adjusted. The overall structure is compact, and the occupied space is small. The supporting frame and the fixing frame can be flexibly installed on a slit lamp frame or other proper positions, and the accuracy and efficiency of prism inspection can be remarkably improved.

Description

Technical Field

[0001] The present application relates to the technical field of ophthalmic medical devices, and in particular to a prism strabismus measuring device. Background Art

[0002] A prism is an important optical instrument commonly used in strabismus examinations, playing a key role in determining the angle of strabismus. Accurate prism examination results are crucial for strabismus diagnosis and treatment. However, current prism examination equipment still has some unresolved issues and shortcomings.

[0003] First, prism examinations are highly dependent on patient cooperation. During the examination, the patient must maintain a steady head and hands while looking through the prism at targets at varying distances to measure the degree of eye deviation. The relative position of the eye to the prism, the distance between the prism and the patient's face, and the angle at which the prism is parallel to the face all significantly affect the accuracy of the examination results.

[0004] Secondly, the current handheld prism examination method used in clinical practice, whether held by the patient or an assistant doctor, is difficult to maintain stability for an extended period of time, resulting in low repeatability and consistency in examination results. Furthermore, prolonged holding of the prism can cause arm fatigue, further compromising examination quality.

[0005] Furthermore, when held in hand, the prism is more likely to be accidentally dropped and damaged during the examination. Existing prism fixtures in previous inventions were limited to independent block prisms, requiring frequent replacement of prisms of different degrees to determine the strabismus angle, which was relatively complex and inconvenient. Furthermore, the placement of the independent prism fixtures made their use less flexible, resulting in lower utilization rates in limited space in the examination room. Utility Model Content

[0006] In order to solve the above technical problems, the purpose of the utility model is to provide a prism strabismus measuring device that is stable and fixed and can quickly switch the degree.

[0007] The technical solutions provided by this utility model are as follows:

[0008] A prism strabismus measuring device comprises a disc support and a prism disc. The prism disc is fixed with a plurality of block prisms of different degrees. The disc support and the prism disc are stacked on each other, and a connecting structure for rotating the prism disc relative to the disc support is provided in the center.

[0009] Preferably, the prism disk includes a disc rubber bracket, the disc rubber bracket is provided with a plurality of through holes evenly arranged around the center thereof, and the prism is fixed to the disc rubber bracket at the positions of the through holes.

[0010] Preferably, the prism disk further includes a frame ring located on the periphery of the rubber bracket, and the disk bracket is correspondingly provided with an outer ring.

[0011] Preferably, the outer ring is further provided with a plurality of indicator scale lines for aligning with the outer canthus of the subject during use.

[0012] Preferably, the frame ring has a plurality of raised circular buckles, each of which is located in the middle of adjacent through holes, and the outer ring is provided with a plurality of slot holes corresponding to the raised circular buckles, each of which is located in the middle of adjacent indicator scale lines.

[0013] Preferably, the connecting structure includes an axle seat with an axle hole located in the center of the disc bracket and a rotating shaft located in the center of the prism disc. The rotating shaft cooperates with the axle hole to enable the prism disc to rotate relative to the disc bracket, and a positioning structure for positioning the rotation angle of the prism disc is provided between the rotating shaft and the axle seat.

[0014] Preferably, the disc support further includes a connecting rod connecting the shaft seat and the outer ring.

[0015] Preferably, it further comprises a supporting frame and a fixing frame, wherein the fixing frame is used to be fixed on the rod-shaped structure, and the supporting frame connects the disc bracket and the fixing frame, and is used to fix the disc bracket on the rod-shaped structure through the fixing frame.

[0016] Preferably, the upper end of the support frame is connected to the center of the disc bracket, a retractable cross bar is provided in the middle, and the lower end has a spiral structure connected to the fixing frame.

[0017] Preferably, the fixing frame includes a body with a U-shaped groove structure, which can be sleeved on the rod-shaped structure, and a baffle is provided on the outside for the adjusting bolt to pass through the baffle and abut against the rod-shaped structure to fix the fixing frame body on the rod-shaped structure.

[0018] Compared to existing technologies, the present prism strabismus measurement device utilizes a stacked circular support and prism plate, which holds multiple prisms of varying diopters. This ensures stable prism fixation and allows for rapid switching of diopters for precise angle adjustment. Furthermore, the overall structure is compact, requiring minimal space. The support and mounting brackets allow for flexible installation in a slit lamp stand or other suitable locations, significantly improving the accuracy and efficiency of prism examinations. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic structural diagram of a prism strabismus measuring device according to an embodiment of the present utility model.

[0021] Figure 2 for Figure 1 Schematic diagram of the disc holder in the prism strabismus measurement device shown.

[0022] Figure 3 for Figure 1 Schematic diagram of the prism disk in the prism strabismus measurement device shown.

[0023] Figure 4 for Figure 1 Schematic diagram of the prism in the prism strabismus measurement device shown.

[0024] Figure 5 for Figure 1 Schematic diagram of the support frame in the prism strabismus measurement device shown.

[0025] Figure 6 for Figure 1 Schematic diagram of the fixing frame in the prism strabismus measuring device shown. DETAILED DESCRIPTION

[0026] In order to help those skilled in the art better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0027] It should be noted that when an element is referred to as being “fixed on” or “set on” another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0028] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply 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 on this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0030] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0031] like Figures 1 to 6 As shown, an embodiment of the present invention provides a prism strabismus measuring device, comprising a disc bracket 21 , a prism disc 22 , a supporting frame 31 , and a fixing frame 32 .

[0032] The disc support 21 and the prism disc 22 are stacked on each other, and a connecting structure for rotating the prism disc 22 relative to the disc support 21 is provided in the center.

[0033] The prism disk 22 holds a plurality of block-shaped prisms 224 of varying degrees (eight in this embodiment). In this embodiment, the prism disk 22 includes a circular rubber support 223 with multiple through-holes 226 evenly spaced around its center. The prisms 224 are secured to the rubber support 223 at the locations of the through-holes. A frame ring 221 is fixed to the outer periphery of the rubber support 223. This frame ring 221 has multiple raised round buckles 222, each located between adjacent through-holes 226. A cylindrical rotating shaft 227 is also located in the center of the prism disk 22.

[0034] The disc holder 21 is provided with an outer ring 214 corresponding to the frame ring 221. The outer ring 214 is also provided with multiple indicator scale lines 216 for aligning with the outer canthus of the subject's eye during use. Multiple retaining holes 215 are provided on the outer ring 214 corresponding to the raised circular buckles 222, with each retaining hole 215 located between adjacent indicator scale lines 216. A shaft seat 212 with an axial hole is also provided in the center of the disc holder 21. The shaft seat 212 is fixed to an inner ring 211. Two connecting rods 213 are provided between the shaft seat 212 and the outer ring 214. In this embodiment, the connecting rods 213 connect the inner ring 211 and the outer ring 214, and are indirectly connected to the shaft seat 212 via the inner ring 211. Of course, the inner ring 211 can also be omitted, with the shaft seat 212 and the outer ring 214 directly connected via the connecting rods 213.

[0035] A shaft seat 212 with an axial hole located in the center of the disc holder 21 and a rotating shaft 227 located in the center of the prism disc 22 form a connection structure. The rotating shaft 227 cooperates with the axial hole to enable the prism disc 22 to rotate relative to the disc holder 21. A positioning structure (not shown) is provided between the rotating shaft 227 and the shaft seat 212 to control the rotation angle of the prism disc 22, allowing the prism disc 22 to rotate in 45-degree increments. This positioning structure can be a concave-convex structure between the shaft seat and the rotating shaft (for example, a single axial groove can be provided on the inner wall of the shaft seat's axial hole, and eight axial protrusions can be evenly distributed on the outer wall of the rotating shaft), or other similar structures can be used.

[0036] The support frame 31 connects the disc support 21 and the fixing frame 32, and is used to fix the disc support 21 to the rod-shaped structure through the fixing frame 32. In this embodiment, the support frame 31 has a metal connecting rod 311 at the upper end connected to the center of the disc support 21, a retractable crossbar 312 in the middle, and a spiral structure 313 at the lower end connected to the fixing frame 32.

[0037] The fixing bracket 32 ​​is used to securely attach to the rod-like structure 1. The rod-like structure 1 can serve as a support column for a slit lamp stand, enabling measurements to be performed using the slit lamp stand. In this embodiment, the fixing bracket 32 ​​comprises a main body 321 with a U-shaped groove structure that can be fitted over the rod-like structure 1. A retaining plate 322 is provided on the outside of the fixing bracket 32, through which an adjusting bolt 323 passes to abut against the rod-like structure 1, securing the main body 321 of the fixing bracket 32 ​​to the rod-like structure 1. This structure allows the fixing bracket 32 ​​to be adjusted up and down relative to the rod-like structure.

[0038] Of course, in other embodiments, the disc bracket 21 is not limited to being fixed and used in conjunction with the support frame 31 and the fixing frame 32, but may also be fixed in various other ways, may be fixed on various other components, or may even be used directly.

[0039] The operation process is briefly described as follows.

[0040] Step 1, install the fixing frame 32 structure: place the U-shaped groove on the support column on one side of the slit lamp holder, place the baffle on the outside of the U-shaped groove, and adjust the tightness by adjusting the bolts to ensure that the fixing frame 32 is firmly installed on the slit lamp holder.

[0041] Step 2, installing the support frame 31: tighten the spiral structure of the support frame 31 and connect it to the fixing frame 32.

[0042] Step 3: Assemble the Rotatable and Adjustable Prism Disc Body: Now, secure the block-shaped prisms of different powers through the through-holes in the disc's rubber support to form the prism array disc, prism disc 22. Align the rotating axis of prism disc 22 with the axis seat of disc support 21 to form the prism disc body, which is then connected to support frame 31.

[0043] Step 4: Ask the subject to place his or her lower jaw on the chin rest of the slit lamp stand, with the forehead close to the top of the slit lamp.

[0044] Step 5: Adjust the mounting bracket 32 ​​so that the prism disk is level with the patient's eye. Adjust the telescopic structure of the support bracket 31 so that the prism in the middle of the prism disk is parallel and in front of the patient's eye, with the indicator scale aligned with the patient's outer canthus. This ensures consistent prism positioning. For exotropia, select the medial prism; for esotropia, select the lateral prism.

[0045] Step 6: Ask the subject to look at the light source in front and check whether the degree of the prism is appropriate by covering and uncovering it, and alternating covering and checking. If the degree is not appropriate, rotate the prism disk 22 so that the prism below it rotates to a horizontal position, and cover and uncover it again, and alternate covering and checking to determine whether the degree of the prism is appropriate.

[0046] Step 7: When switching to the contralateral eye examination, adjust the telescopic structure of the support frame 31 and repeat steps 5 and 6.

[0047] Step 8: When the inspection is completed, directly loosen the spiral structure of the support frame 31, remove the prism disc body and the support frame 31, and prepare for next use.

[0048] The prism strabismus measurement device in this embodiment can be securely mounted on a slit lamp stand. The device features a circular disc design that integrates prisms of varying degrees. By rotating the disc, the prism degree can be quickly and easily switched, eliminating the tedious process of frequent prism replacement. Furthermore, the precise angle scale and indicator ensure highly accurate prism angle adjustment. This device not only eliminates arm fatigue associated with holding a prism but, more importantly, addresses stability issues, effectively improving the repeatability and consistency of examination results.

[0049] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A prism strabismus measuring device, characterized in that: The invention comprises a disc support and a prism disc. The prism disc is fixed with a plurality of block prisms of different degrees. The disc support and the prism disc are stacked on each other, and a connecting structure for rotating the prism disc relative to the disc support is provided in the center.

2. The prism strabismus measuring device according to claim 1, wherein: The prism disk includes a disc rubber bracket, the disc rubber bracket is provided with a plurality of through holes evenly arranged around the center thereof, and the prism is fixed in cooperation with the disc rubber bracket at the positions of the through holes.

3. The prism strabismus measuring device according to claim 2, wherein: The prism disk further comprises a frame ring located on the outer periphery of the rubber bracket, and the disc bracket is correspondingly provided with an outer circular ring.

4. The prism strabismus measuring device according to claim 3, wherein: The outer ring is also provided with a plurality of indicating scale lines for aligning with the outer canthus of the subject during use.

5. The prism strabismus measuring device according to claim 4, wherein: The frame ring is provided with a plurality of raised round buckles, each of which is located in the middle of adjacent through holes; the outer ring is provided with a plurality of slot holes corresponding to the raised round buckles, each of which is located in the middle of adjacent indicating scale lines.

6. The prism strabismus measuring device according to claim 3, wherein: The connecting structure includes an axle seat with an axle hole located in the center of the disc bracket and a rotating shaft located in the center of the prism disc. The rotating shaft cooperates with the axle hole to enable the prism disc to rotate relative to the disc bracket, and a positioning structure is provided between the rotating shaft and the axle seat to position the rotation angle of the prism disc.

7. The prism strabismus measuring device according to claim 6, wherein: The disc support also includes a connecting rod connecting the shaft seat and the outer ring.

8. The prism strabismus measuring device according to any one of claims 1 to 7, wherein: It also includes a supporting frame and a fixing frame, wherein the fixing frame is used to be fixed on the rod-shaped structure, and the supporting frame connects the disc bracket and the fixing frame, and is used to fix the disc bracket on the rod-shaped structure through the fixing frame.

9. The prism strabismus measuring device according to claim 8, wherein: The upper end of the support frame is connected to the center of the disc bracket, a telescopic cross bar is arranged in the middle, and the lower end has a spiral structure connected to the fixing frame.

10. The prism strabismus measuring device according to claim 8, wherein: The fixing frame includes a main body with a U-shaped groove structure, which can be sleeved on the rod-shaped structure. A baffle is provided on the outside for the adjusting bolt to pass through the baffle and abut against the rod-shaped structure to fix the fixing frame main body on the rod-shaped structure.

Images