CN219000857U - Hand-held astigmatism marking device - Google Patents

Abstract

The utility model provides a handheld astigmatism marking device, which comprises a handheld component, an astigmatism disc, a sliding mechanism and a marking component, wherein the astigmatism disc is arranged at the tail end of the handheld component; the light scattering disc comprises a disc panel, a disc bottom plate, a first connecting plate and a stop tooth piece, wherein the disc panel is arranged opposite to the disc bottom plate and is connected with the disc bottom plate through the first connecting plate, a cavity is formed between the disc panel and the disc bottom plate, and the stop tooth piece is arranged in the cavity and is positioned at a scale corresponding to the axial position of the pre-marking position; the marking assembly comprises a first marking assembly and a second marking assembly, wherein the first marking assembly is respectively arranged on a disc bottom plate at the corresponding position of 0 DEG and 180 DEG on the scattered disc, and the second marking assembly is arranged at the bottom end of the sliding mechanism; the sliding mechanism slides on the optical disk to the stop tooth plate to make the second marking component mark at the pre-marking position. The handheld astigmatism marking device is simple and small in structure, convenient to use, accurate in marking and capable of being used under a slit lamp or a surgical microscope.

Description

Hand-held astigmatism marking device

Technical Field

The utility model relates to the technical field of ophthalmic surgical instruments, in particular to a handheld astigmatism marking device.

Background

At present, refractive cataract surgery has become mainstream, in cataract surgery, besides removing turbid crystalline lens and implanting transparent artificial lens, the original refractive error of a patient needs to be corrected, the condition that the patient recovers the front eye after surgery is realized as much as possible, and 75 degrees or more astigmatism can cause serious vision degradation, so that the astigmatism of the patient is corrected to be very important for improving the visual quality of the patient after surgery. The existing method for simultaneously correcting astigmatism in cataract surgery comprises the following steps: firstly, making a Limbal Relief Incision (LRI) on the steep axis of the cornea to reduce a part of astigmatism; the other is to implant an astigmatism correction type intraocular lens, and the mark of the intraocular lens is aligned with a preset implantation axis in the operation, so that the axis mark on the cornea is required to be made before the operation. An axial displacement of the implantation of an astigmatism correcting intraocular lens of 1 ° results in a loss of 3.3% of the astigmatism correcting effect, and a displacement of 30 ° results in a complete loss of the astigmatism correcting effect, even introducing new vision quality problems.

The existing common cornea axial position marking methods are two, namely, marking is carried out by a marking pen under the indication of a slit lamp light band, but the diameter of the pen point of the marking pen is larger, and the marked astigmatism axial position is not accurate enough. Another is to scratch the corneal epithelium with a 1 ml syringe tip under slit light, and then stain with a marker pen, which can make the stain stay on the cornea longer, but this method still has risks, such as the marks made by the syringe are not necessarily straight; for example, the position of the marker is not accurate enough, which may result in the marker being out of alignment with the 0 ° and 180 ° positions, making it impossible to determine the exact position during surgery.

Disclosure of Invention

The utility model provides a handheld astigmatism marking device, which aims to solve the technical problem of inaccurate cornea axial position marking in the prior art.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the utility model provides a handheld astigmatism marking device, which comprises a handheld component, an astigmatism disc, a sliding mechanism and a marking component, wherein the astigmatism disc is arranged at the tail end of the handheld component, and the sliding mechanism is slidably arranged on the astigmatism disc; the light scattering disc comprises a disc panel, a disc bottom plate, a first connecting plate and a stop tooth piece, wherein the disc panel is arranged opposite to the disc bottom plate and is connected with the disc bottom plate through the first connecting plate, a cavity is formed between the disc panel and the first connecting plate, and the stop tooth piece is arranged in the cavity and is positioned at a scale corresponding to the axial position of the pre-marking position; the marking assembly comprises a first marking assembly and a second marking assembly, the first marking assembly is respectively arranged on the disc base plate at the corresponding position of 0 DEG and 180 DEG on the scattered optical disc, and the second marking assembly is arranged at the bottom end of the sliding mechanism; the sliding mechanism slides on the optical disk to the stopping tooth piece to make the second marking component mark at the pre-marking position.

Further, the sliding mechanism comprises a first sliding plate, a second connecting plate and a braking piece, wherein the first sliding plate and the second sliding plate are oppositely arranged and are connected through the second connecting plate; the first sliding plate is positioned above the disc surface plate, the second sliding plate is positioned below the disc bottom plate, and the second marking assembly is arranged at the bottom end of the second sliding plate; the second mark component is arranged on the first slide plate and is positioned in a cavity formed by the disk surface plate and the disk bottom plate, and the second mark component is the same as the scale on the scattered optical disk corresponding to the brake component; the first sliding plate and the second sliding plate slide on the scattered optical disk until the braking piece is abutted with the stop tooth piece.

Further, a sliding sheet is formed on the side face of the first sliding plate, and the sliding sheet extends along the side edge of the first sliding plate; the disc panel is provided with a track, and the sliding sheet slides in the track until the braking piece is abutted with the stop tooth piece.

Further, the braking member is detachably connected to the first slide plate.

Further, the braking piece is movably installed on the first sliding plate, a gap is arranged between the stop tooth piece and the first sliding plate, and the bottom end of the braking piece is moved into the gap so that the braking piece spans the stop tooth piece to the other side of the braking piece.

Further, a first center seam penetrating through the disc surface plate and the disc bottom plate is formed on the scattered optical disc between 0 degrees and 180 degrees, the number of the tracks is two, and the two tracks are symmetrically arranged relative to the first center seam; the number of the sliding sheets is two, the two sliding sheets are oppositely arranged on two sides of the first sliding plate, the second connecting plate is arranged in the first center joint, and the sliding sheets slide in the corresponding tracks.

Further, a second center seam penetrating through the disc surface plate and the disc bottom plate is formed between 180 degrees and 360 degrees on the scattered optical disc, the number of the tracks is two, and the two tracks are symmetrically arranged relative to the second center seam; the number of the sliding sheets is two, the two sliding sheets are oppositely arranged on two sides of the first sliding plate, the second connecting plate is arranged in the second center joint, and the sliding sheets slide in the corresponding tracks.

Further, the number of the stop tooth sheets is multiple, and each stop tooth sheet corresponds to the scale on the compact disc.

Further, the second marking assembly comprises a cutter handle and a blunt blade, wherein the cutter handle is fixed at the bottom end of the sliding mechanism, and the blunt blade is connected with the cutter handle; the length of the blunt blade is 1 mm-3 mm, the width is 10 μm-40 μm, and the thickness is 10 μm-15 μm.

Further, the handheld assembly comprises a handle and a connecting rod, and a clamping part is formed at the tail end of the connecting rod; the astigmatism disc further comprises a mounting rod, one end of the mounting rod is fixed on the first connecting plate, the other end of the mounting rod is mounted in the clamping part, and the mounting rod is detachably connected with the clamping part to adjust the angle between the astigmatism disc and the connecting rod.

Further, the handheld assembly comprises a fixing piece, the clamping portion is a groove, the tail end of the mounting rod is a convex portion, the tail end of the mounting rod stretches into the clamping portion and rotates in the clamping portion, and the fixing piece is used for fixing the mounting rod in the clamping portion.

Further, the handheld assembly comprises a fixing piece, the clamping portion is a cylindrical cavity, the tail end of the mounting rod is inserted into the clamping portion and rotates in the cylindrical cavity, and the fixing piece is used for fixing the mounting rod in the clamping portion.

According to the handheld astigmatism marking device provided by the utility model, the first marking components are respectively arranged on the disc bottom plates at the positions corresponding to 0 DEG and 180 DEG on the astigmatism disc, so that the axial positions of 0 DEG and 180 DEG can be conveniently marked on the cornea at the same time; the sliding mechanism is arranged on the scattered optical disk, the stop tooth piece is arranged in the cavity between the disk surface plate and the disk bottom plate, the scale of the scattered optical disk on the position of the stop tooth piece corresponds to the axial position of the pre-marking position on the cornea, the sliding mechanism stops moving when sliding to the stop tooth piece on the scattered optical disk, and the second marking component arranged at the bottom end of the sliding mechanism can accurately and conveniently mark the pre-marking axial position on the cornea. The handheld astigmatism marking device is simple and small in structure, convenient to use, accurate in marking and capable of being used under a slit lamp or a surgical microscope.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a handheld astigmatism marking device according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view showing a structure of a combination of a compact disc and a sliding mechanism according to an embodiment of the present utility model;

fig. 3 is a cross-sectional view showing another structure of the cooperation of the optical disc and the sliding mechanism in the embodiment of the present utility model.

Reference numerals:

100. a hand-held assembly; 110. a handle; 120. a connecting rod; 121. a clamping part;

200. a scattered optical disk; 210. a tray panel; 211. a track; 220. a tray base; 230. a first connection plate; 240. stop tooth sheets; 250. a first center seam; 260. a mounting rod;

300. a sliding mechanism; 310. a first slide plate; 311. a sliding sheet; 320. a second slide plate; 330. a second connecting plate; 340. a brake member;

400. a second marking assembly; 410. a knife handle; 420. a blunt blade.

Detailed Description

In order to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly 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 be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" or "a number" is two or more, unless explicitly defined otherwise.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the scope of the present disclosure, since any structural modifications, proportional changes, or dimensional adjustments made by those skilled in the art should not be made in the present disclosure without affecting the efficacy or achievement of the present disclosure.

Referring to fig. 1 to 3, the embodiment of the present application provides a handheld astigmatic marking apparatus, which includes a handheld component 100, an astigmatic disc 200, a sliding mechanism 300, and a marking component, where the astigmatic disc 200 is mounted at the end of the handheld component 100, and the sliding mechanism 300 is slidably mounted on the astigmatic disc 200. The optical disc 200 includes a disc panel 210, a disc bottom plate 220, a first connecting plate 230 and a stop tooth 240, wherein the disc panel 210 and the disc bottom plate 220 are arranged opposite to each other and are connected through the first connecting plate 230, a cavity is formed between the two, and the stop tooth 240 is arranged in the cavity and is positioned at a scale corresponding to an axial position of a pre-marking position. The marking components comprise a first marking component and a second marking component 400, the first marking components are respectively arranged on the disc base plate 220 at the corresponding positions of 0 DEG and 180 DEG on the optical disc 200, and the second marking component 400 is arranged at the bottom end of the sliding mechanism 300; the sliding mechanism 300 slides over the optical disk 200 to the stop tooth 240 to mark the second marking assembly 400 in the pre-marking position.

In this embodiment, referring to fig. 2, a cavity is provided between the disk surface plate 210 and the disk bottom plate 220 of the light diffusing disk 200, and the stop tooth 240 is disposed in the cavity. The specific connection relation of the stop tooth 240 may be provided on the tray panel 210, or may be provided on the first connection plate 230 or the tray bottom plate 220, so long as the stop tooth can cooperate with the sliding mechanism 300 to act as a stop for the sliding mechanism 300. In addition, the corresponding scale of the stop tooth 240 on the astigmatic disc 200 corresponds to the angle of the pre-marking axis on the cornea, so that the second marking assembly 400 can precisely mark the pre-marking axis when the sliding mechanism 300 slides on the astigmatic disc 200 to the position of the stop tooth 240.

The existing marking method is not accurate enough in marking position, and can lead to the fact that the marked 0 degrees and 180 degrees are not on the same straight line, so that the accurate position cannot be determined in operation. In this embodiment of the present application, the first marking assemblies are respectively installed at the positions of the disc bottom plate 220 corresponding to the two scales of 0 ° and 180 ° on the optical disc 200, so that two axial positions of 0 ° and 180 ° can be marked on the cornea at the same time, and the situation that the axial position marks of 0 ° and 180 ° are not on the same straight line is avoided, so that the accurate position cannot be determined in the operation. The first marking assembly has the same structure as the second marking assembly 400, and comprises a first cutter handle and a first blunt blade, wherein the first cutter handle is respectively arranged at the position of the disc bottom plate 220 corresponding to the two scales of 0 DEG and 180 DEG on the optical disc 200, and the first blunt blade is connected with the first cutter handle. The first blunt blade has a length of 1mm to 3mm, a width of 10 μm to 40 μm and a thickness of 10 μm to 15 μm.

In the embodiment of the present application, the specific structure of the sliding mechanism 300 is not limited, and it is used to slide on the astigmatic disc 200, and can be blocked by the stopping teeth 240 to stop sliding at a preset position, so that the second marking component 400 marks on a preset axial position of the cornea.

According to the handheld astigmatism marking device provided by the embodiment of the application, the first marking components are respectively arranged on the disc base plate 220 at the corresponding positions of 0 DEG and 180 DEG on the astigmatism disc 200, so that the axial positions of 0 DEG and 180 DEG can be marked on the cornea conveniently and simultaneously; the sliding mechanism 300 is arranged on the astigmatic disc 200, the stop tooth piece 240 is arranged in the cavity between the disc surface plate 210 and the disc bottom plate 220, the scale of the astigmatic disc 200 at the position of the stop tooth piece 240 corresponds to the axial position of the pre-marking position on the cornea, the sliding mechanism 300 stops moving when the astigmatic disc 200 slides to the stop tooth piece 240, and the second marking assembly 400 arranged at the bottom end can accurately and conveniently mark the pre-marking axial position on the cornea. The handheld astigmatism marking device has the advantages of simple and small structure, convenient use and accurate marking, and can be used under a slit lamp or a surgical microscope.

In the present embodiment, the disc base 220 of the optical disc 200 has a curved surface having the same curvature as the front surface of the cornea, and has a radius of curvature of 7.7mm to 7.8mm. In addition, the surface plate 210 of the optical disk 200 is designed to be a frosted surface, so that the reflected light can be emitted to different directions without generating strong reflected light, and a marker can more easily observe the numbers on the optical disk 200 under a surgical microscope to accurately mark. The surface of the scattered CD 200 is provided with a bacteriostatic nano coating. The antibacterial nano-coating can reduce cornea infection possibly caused by corneal epithelial marker damage. The antibacterial nano-coating is preferably polyhexamethylene biguanide plasma polymer.

In some embodiments, the sliding mechanism 300 includes a first sliding plate 310, a second sliding plate 320, a second connecting plate 330, and a braking member 340, where the first sliding plate 310 is disposed opposite to the second sliding plate 320 and connected by the second connecting plate 330; the first slider 310 is positioned above the tray panel 210, the second slider 320 is positioned below the tray bottom 220, and the second marking assembly 400 is mounted to the bottom end of the second slider 320; the braking member 340 is mounted on the first sliding plate 310 and is located in the cavity formed by the disc panel 210 and the disc bottom plate 220, and the second marking assembly 400 is the same as the scale on the astigmatism disc 200 corresponding to the braking member 340; the first and second sliding plates 310 and 320 slide on the optical disc 200 until the stopper 340 abuts against the stopper tooth 240.

It will be appreciated that the first and second slide plates 310, 320 are capable of sliding over the light-diffusing disc 200 while the brake 340 slides synchronously with the second marking assembly 400 until the brake 340 abuts against the stop tooth 240 to block movement of the brake 340, thereby allowing the second marking assembly 400 to remain in the pre-marking position. The sliding mechanism 300 of the embodiment of the application has a simple structure and is convenient to move.

In some embodiments, the side of the first sliding plate 310 is formed with a sliding plate 311, and the sliding plate 311 extends along the side of the first sliding plate 310; the tray panel 210 is formed with a rail 211, and the slider 311 slides in the rail 211 until the stopper 340 abuts against the stopper tooth 240. It can be appreciated that the sliding piece 311 and the track 211 make the sliding of the sliding mechanism 300 on the optical disc 200 smoother, so as to avoid the first sliding plate 310 and the second sliding plate 320 from slipping off the optical disc 200 when sliding.

When there are a plurality of pre-marking positions of the cornea, or when the handheld astigmatism marking device of the embodiment of the present application is used as a universal marking device to mark different cornea positions, the sliding mechanism 300 needs to slide to a different plurality of pre-marking positions, which requires moving the braking member 340 to the next stop tooth plate 240 after one marking is completed.

In some embodiments, brake 340 is removably coupled to first sled 310. That is, when the first slider 310 slides on the optical disk 200, the stopper 340 is mounted on the first slider 310; after first sled 310 is slid until detent 340 abuts stop tooth 240 and a predetermined axial position of the cornea is marked using second marking assembly 400, detent 340 may be removed from first sled 310. The specific detachable structure of the stopper 340 and the first slider 310 is not limited, and any structure satisfying the embodiments of the present application may be used.

It will be appreciated that after the first pre-marking axis is marked, the second marking assembly 400 needs to be moved to another position for marking, at which time the brake 340 can be removed from the first slide plate 310 to facilitate the brake 340 to clear the stop of the stop tab 240, and then the brake 340 can be reinstalled on the first slide plate 310 to slide to the next pre-marking position.

In other embodiments, the braking member 340 is movably mounted on the first sliding plate 310, and a gap is provided between the stopping tooth 240 and the first sliding plate 310, and the bottom end of the braking member 340 is moved into the gap so that the braking member 340 spans the stopping tooth 240 to the other side thereof. That is, a gap is provided between the stopper tooth 240 and the bottom end of the first slider 310, and when the bottom end of the stopper 340 moves to the gap, it is possible to cross the stopper tooth 240, thereby allowing the sliding mechanism 300 to continue to move to the next pre-marking position.

It will be appreciated that the sliding mechanism 300 may slide along the perimeter of the compact disk 200, or may have other different sliding paths, such as a first center seam 250 and/or a second center seam extending through the disk panel 210 and the disk base 220, as shown in fig. 3.

In some embodiments, the first center seam 250 penetrating the disk panel 210 and the disk bottom plate 220 is formed on the optical disk 200 between 0 ° and 180 °, the number of the tracks 211 is two, and the two tracks 211 are symmetrically disposed with respect to the first center seam 250; the number of the sliding sheets 311 is two, the two sliding sheets 311 are oppositely arranged at two sides of the first sliding plate 310, the second connecting plate 330 is arranged in the first center joint 250, and the sliding sheets 311 slide in the corresponding rails 211.

It will be appreciated that the first center seam 250 may be located in a central portion of the tray panel 210, as well as other portions, as described with reference to fig. 3. The second connection plate 330 is positioned within the first center slit 250 and moves along the first center slit 250. The first and second sliding plates 310 and 320 may be symmetrically disposed along the first center slit 250, respectively, so as to make the sliding mechanism 300 move more smoothly. The number of tracks 211 on the tray panel 210 corresponds to the number of sliders 311 on the first slider 310. In this embodiment, the number of the stop teeth 240 may be two corresponding to the same scale of the optical disc 200, and the two stop teeth 240 are symmetrically disposed at two sides of the first middle seam 250. Accordingly, the number of the stoppers 340 on the first slider 310 corresponds to the number of the stopper teeth 240 on the same scale.

The same design exists between 180 ° and 360 ° on the astigmatism disc 200. In other embodiments, the second center seam penetrating the disk panel 210 and the disk bottom plate 220 is formed between 180 ° and 360 ° on the optical disk 200, and the number of the tracks 211 is two, and the two tracks 211 are symmetrically disposed with respect to the second center seam; the number of the sliding sheets 311 is two, the two sliding sheets 311 are oppositely arranged at two sides of the first sliding plate 310, the second connecting plate 330 is arranged in the second center joint, and the sliding sheets 311 slide in the corresponding rails 211.

It will be appreciated that the second center seam may be located in a central portion of the tray panel 210 or in other locations. The second connection plate 330 is positioned in and moves along the second center slit. The first and second sliding plates 310 and 320 may be symmetrically disposed along the second center slit, respectively, so as to make the sliding mechanism 300 move more smoothly. The number of tracks 211 on the tray panel 210 corresponds to the number of sliders 311 on the first slider 310. In this embodiment, the number of the stop teeth 240 may be two corresponding to the same scale of the optical disc 200, and the two stop teeth 240 are symmetrically disposed at two sides of the second center seam; accordingly, the number of the stoppers 340 on the first slider 310 corresponds to the number of the stopper teeth 240 on the same scale.

In the case where the first center seam 250 and the second center seam are present at the same time, the position of 0 c (360 c) on the compact disc 200 is seamless with the position of 180 c, i.e., the first center seam 250 is not in communication with the second center seam. The sliding mechanism 300 on the compact disc 200 may be respectively disposed between 0 ° and 180 °, and between 180 ° and 360 °. When there are a plurality of pre-marking axial positions of the cornea, or when the handheld astigmatism marking device of the embodiment of the present application is used as a general marking device for marking different axial positions of the cornea, the stop tooth plate 240 needs to be provided in plurality. In some embodiments, the number of the stop teeth 240 is plural, and each stop tooth 240 corresponds to a scale on the optical disk 200. That is, each scale on the optical disc 200 is correspondingly provided with a stop tooth 240, and at this time, the sliding mechanism 300 can stop sliding at any stop tooth 240, so that any preset marking position can be marked on the cornea. A stop tooth 240 is typically provided on the optical disc 200 at every 10 °.

In some embodiments, the second marking assembly 400 includes a handle 410 and a blunt blade 420, the handle 410 is fixed to the bottom end of the sliding mechanism 300, the blunt blade 420 is connected to the handle 410, the blunt blade 420 has a length of 1mm to 3mm, a width of 10 μm to 40 μm, and a thickness of 10 μm to 15 μm.

In the embodiment of the application, the blunt blade 420 is used for marking, on one hand, the dimension of the blunt blade 420 can be designed according to the needs, and the axial position marking can be more accurately carried out; on the other hand, the blunt blade 420 can scratch the corneal epithelium, and the blunt blade 420 is coated with dye for marking, so that the dye can infiltrate the damaged part of the corneal epithelium, the marking is clear and accurate, and the marking is not easy to fade after washing. Corneal epithelial cells are regenerable cells, and the subsequent impact of the laceration is not affected. The corneal epithelium has a thickness of about 50 μm and the blunt blade 420 has a width of 10 μm to 40 μm so as not to damage the pre-corneal elastic layer or the stromal layer.

In some embodiments, the handheld assembly 100 includes a handle 110 and a connecting rod 120, a clamping portion 121 is formed at an end of the connecting rod 120, the compact disc 200 further includes a mounting rod 260, one end of the mounting rod 260 is fixed on the first connecting plate 230, the other end is mounted in the clamping portion 121, and the mounting rod 260 is detachably connected with the clamping portion 121 to adjust an angle between the compact disc 200 and the connecting rod 120. In this embodiment, the surface of the handle 110 is provided with a groove, and the groove is enclosed on the peripheral side of the handle 110. In addition, the surface of the handle 110 is arranged in a grid shape, so that a marker can hold stably and can mark in different hand-held postures conveniently. It will be appreciated that the mounting rod 260 is detachably connected to the clamping portion 121, so as to facilitate the adjustment of the angle between the optical disc 200 and the connecting rod 120 at any time, and facilitate the labeling of the left-handed and right-handed labeling person using a single hand.

In some embodiments, the hand-held assembly 100 includes a fixing member, the clamping portion 121 is a groove, the end of the mounting rod 260 is a protrusion, the end of the mounting rod 260 extends into the clamping portion 121 and rotates in the clamping portion 121, and the fixing member fixes the mounting rod 260 in the clamping portion 121. That is, the clamping part 121 and the tail end of the mounting rod 260 are in a structure of rotating a universal ball head, and can freely rotate and fix by 360 degrees, thereby further providing convenience for a marker and improving the marking stability. The fixing member in this embodiment may be a screw or other element capable of fixing the mounting rod 260 to the clamping portion 121, and the fixing member is not shown in fig. 1.

In other embodiments, the hand-held assembly 100 includes a fixing member, the clamping portion 121 is a cylindrical cavity, and the end of the mounting rod 260 is inserted into the clamping portion 121 and rotates in the cylindrical cavity, and the fixing member fixes the mounting rod 260 in the clamping portion 121. It will be appreciated that the mounting bar 260 is also free to rotate 360 ° within the cylindrical cavity, providing convenience to the marker. The fixing member in this embodiment may be a screw or other element capable of fixing the mounting rod 260 to the clamping portion 121, and the fixing member is not shown in fig. 1.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (11)

1. A hand-held astigmatism marking device, characterized in that: the portable optical disc comprises a handheld component, a scattered disc, a sliding mechanism and a marking component, wherein the scattered disc is arranged at the tail end of the handheld component, and the sliding mechanism is slidably arranged on the scattered disc;

the light scattering disc comprises a disc panel, a disc bottom plate, a first connecting plate and a stop tooth piece, wherein the disc panel is arranged opposite to the disc bottom plate and is connected with the disc bottom plate through the first connecting plate, a cavity is formed between the disc panel and the first connecting plate, and the stop tooth piece is arranged in the cavity and is positioned at a scale corresponding to the axial position of the pre-marking position;

the marking assembly comprises a first marking assembly and a second marking assembly, the first marking assembly is respectively arranged on the disc base plate at the corresponding position of 0 DEG and 180 DEG on the scattered optical disc, and the second marking assembly is arranged at the bottom end of the sliding mechanism; the sliding mechanism slides on the optical disk to the stopping tooth piece to make the second marking component mark at the pre-marking position.

2. The handheld astigmatism marking device of claim 1 wherein the sliding mechanism comprises a first slide, a second connecting plate, and a braking member, the first slide being disposed opposite the second slide and connected by the second connecting plate; the first sliding plate is positioned above the disc surface plate, the second sliding plate is positioned below the disc bottom plate, and the second marking assembly is arranged at the bottom end of the second sliding plate;

the second mark component is arranged on the first slide plate and is positioned in a cavity formed by the disk surface plate and the disk bottom plate, and the second mark component is the same as the scale on the scattered optical disk corresponding to the brake component; the first sliding plate and the second sliding plate slide on the scattered optical disk until the braking piece is abutted with the stop tooth piece.

3. The handheld astigmatism marking device of claim 2 wherein the side of the first slide is formed with a slide extending along a side of the first slide; the disc panel is provided with a track, and the sliding sheet slides in the track until the braking piece is abutted with the stop tooth piece.

4. The handheld astigmatism marking device of claim 2 wherein the detent is removably connected to the first slide.

5. The handheld astigmatism marking device of claim 2 wherein the braking member is movably mounted on the first slide, a gap is provided between the stop tooth and the first slide, and the bottom end of the braking member is moved into the gap to cause the braking member to ride over the stop tooth to the other side thereof.

6. The handheld astigmatic marking apparatus according to claim 3, wherein a first center slit penetrating the disk surface plate and the disk bottom plate is formed between 0 ° and 180 ° on the astigmatic disk, the number of the tracks is two, and the two tracks are symmetrically arranged with respect to the first center slit; the number of the sliding sheets is two, the two sliding sheets are oppositely arranged on two sides of the first sliding plate, the second connecting plate is arranged in the first center joint, and the sliding sheets slide in the corresponding tracks.

7. The handheld astigmatic marking apparatus according to claim 3, wherein a second center slit penetrating the disk surface plate and the disk bottom plate is formed between 180 ° and 360 ° on the astigmatic disk, the number of the tracks is two, and the two tracks are symmetrically arranged with respect to the second center slit; the number of the sliding sheets is two, the two sliding sheets are oppositely arranged on two sides of the first sliding plate, the second connecting plate is arranged in the second center joint, and the sliding sheets slide in the corresponding tracks.

8. The handheld light-diffusing marking device of any one of claims 1 to 7, wherein the number of stop teeth is plural, each of the stop teeth corresponding to a scale on the light-diffusing disk.

9. The handheld astigmatism marking device of any of claims 1 to 7 wherein the second marking assembly comprises a handle and a blunt blade, the handle being secured to the bottom end of the sliding mechanism, the blunt blade being connected to the handle; the length of the blunt blade is 1 mm-3 mm, the width is 10 μm-40 μm, and the thickness is 10 μm-15 μm.

10. The handheld astigmatism marking device of any of claims 1 to 7 wherein the handheld assembly comprises a handle and a connecting rod, the end of the connecting rod being formed with a grip; the astigmatism disc further comprises a mounting rod, one end of the mounting rod is fixed on the first connecting plate, the other end of the mounting rod is mounted in the clamping part, and the mounting rod is detachably connected with the clamping part to adjust the angle between the astigmatism disc and the connecting rod.

11. The handheld astigmatism marking device of claim 10 wherein the handheld assembly comprises a securing member, the gripping portion being a recess, the mounting bar terminating in a projection, the mounting bar terminating in the gripping portion and rotating within the gripping portion, the securing member securing the mounting bar within the gripping portion; and/or the number of the groups of groups,

the handheld assembly comprises a fixing piece, the clamping portion is a cylindrical cavity, the tail end of the mounting rod is inserted into the clamping portion and rotates in the cylindrical cavity, and the fixing piece is used for fixing the mounting rod in the clamping portion.

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