CN116531170A - Cornea astigmatism positioning marking device - Google Patents

Abstract

The invention relates to a corneal astigmatism positioning and marking device, which belongs to the technical field of medical devices. The positioning plate with the function of opening the eyelids is used to open the upper and lower eyelids and fully expose the corneal tissue. Hand operation is more convenient for astigmatism positioning; the upper layer is 360 degree positioning circle, the surface is uniformly provided with angle scale lines and values, the minimum indication value of the angle scale lines is 1 degree, the angle value is set every 5 degrees, and the supporting beam is fixedly arranged between the inner walls of the positioning plate, with For support markers and pointers, the pointer is set on the support beam for pointing to the angle scale line of the positioning plate, and the marker is slidably set on the support beam for engraving and coloring the direction indicated by the pointer, and the engraving depth is 40 -50 μm. The invention adopts an integrated device for precise axial positioning combined with marking and scratching, so that the positioning is more precise and the operation is more convenient.

Description

A corneal astigmatism positioning marking device

technical field

The invention relates to the technical field of medical devices, in particular to a corneal astigmatism positioning marking device.

Background technique

Before performing astigmatism intraocular lens surgery, physicians need to locate and mark the astigmatism of the patient's surgical cornea. As the body position changes from upright to supine, it will cause the human eyes to rotate, so the astigmatism positioning and marking must be done before the operation, the patient sits, and the doctor completes it under the slit lamp

The current method is to use the slit light of the slit lamp to mark the axis of astigmatism at the level of the corneal limbus before the operation, then mark it with a sterile marker pen, and then use the tip of a 1ml needle to scratch the corneal epithelium to a certain depth (approx. 40-50μm). When the patient is in the supine position during the operation, the doctor can still identify the axis of astigmatism through the markers under the microscope during the operation, and align the axis of the markers with the astigmatism markers of the intraocular lens.

The prior art application number 202021009126.2, the application name is a multifunctional locator for ophthalmic surgery. A locator with a graduated ring is provided. This solution can mark the corneal apex and limbus to form the corneal astigmatism axis. but still exists:

1. It is impossible to color and scratch the astigmatism axis at one time, and it needs to be operated twice;

2. The depth of scratches cannot be controlled, and there may be unclear markings or cause safety problems;

3. During the positioning process, due to the different cooperation ability of each patient, some patients may have poor cooperation due to difficulty in opening their eyes, which increases the difficulty of positioning and prolongs the positioning time.

In view of the above technical problems, it is necessary to improve the existing locator. After the improvement, the upper and lower eyelids can be opened to fully expose the cornea. Its transparent material can fully observe the cornea during astigmatism positioning. It can also dye and scratch the positioning part at the same time. , It can also accurately control the depth of the scratch, which is of great significance for improving operation efficiency, operation quality and safety.

Contents of the invention

In view of this, the object of the present invention is to propose a corneal astigmatism positioning marking device, which can fully expose the cornea by opening the upper and lower eyelids, and its transparent material can fully observe the corneal situation when the astigmatism is positioned, and can also dye and scratch the positioning part at the same time. It can also accurately control the depth of scratches, greatly improve the operation efficiency and the accuracy of astigmatism positioning, so as to solve the problem of low operation efficiency caused by the color and scratch marking in the existing technology, and further solve the problem of The existing technology does not accurately control the depth of scratches, and there are problems of potential safety hazards or unclear markings.

The present invention is realized through the following technical solutions:

A corneal astigmatism positioning marking device, comprising

Positioning plate, with eyelid stretching function, is used to stretch the upper and lower eyelids and fully expose the corneal tissue to facilitate surgical operations. The top circumferential surface is evenly set with angle scale lines and angle values. The minimum indication value of the angle scale lines is 1 degree. The angle value is set every 5 degrees,

The support beam is fixedly arranged between the inner walls of the positioning plate, and is used to support the marker and the pointer,

The pointer is rotated and set on the support beam, and is used to point to the angle scale line of the positioning plate,

The marker is slidably arranged on the supporting beam, and is used for engraving and coloring the direction indicated by the pointer, and the engraving depth is 40-50 μm.

Further, the marker includes a positioning shaft, a marking needle and a pressing block, the positioning shaft is slidably arranged on the support beam, the marking needle is slidably arranged in the positioning shaft, and the axis of the marking needle is perpendicular to the centerline of the pointer intersection, the pressing block is slidably arranged above the marking needle, and is used to drive the marking needle to carry out marking and coloring operations.

Further, the marking pin includes a shell and a marking head, a coloring material chamber is arranged in the housing, the marking head includes a colored tip and an engraving needle, and the colored tip communicates with the coloring material cavity to develop color on the marked area, so The engraving needle is arranged inside the colored tip, and engraved in the color-developing area to display the axis of astigmatism.

Further, a color material box is provided on the top of the housing, and the color material box is made of hard material, and the pressing block is arranged above the color material box to drive marking.

Further, the positioning shaft is provided with a needle body through hole and a toner box accommodating cavity, and a pressing block sliding groove is arranged above the toner box accommodating cavity, and the diameter of the pressing block sliding groove is larger than that of the toner box accommodating cavity. diameter, the diameter of the toner box accommodating cavity is larger than the diameter of the needle body through hole.

Further, a limit block is set between the shell and the marking head, a limit block through hole is set under the needle body through hole, a limit block stopper is set under the limit block through hole, and a limit block stopper is set under the limit block stopper. A coloring point via hole is provided, and when the limit block abuts against the upper end surface of the limit block block, the length of the engraving needle protruding from the positioning axis is 40-50 μm.

Further, the toner box accommodating chamber is located below the toner box to be provided with an elastic restoring member, and the elastic restoring member is sleeved on the shell.

Further, the positioning plate, the pointer, and the supporting beam are all made of transparent materials.

Further, the support beam is fixedly provided with a positioning sleeve slidingly fitted with the positioning shaft.

Further, the outer edge of the positioning disc is provided with arc-shaped retaining grooves for blocking the upper and lower eyelids.

The beneficial effects of the present invention are:

The marker of the present invention can fully expose the cornea by stretching the upper and lower eyelids, and its transparent material can fully observe the cornea when astigmatism is positioned, and can perform marking and coloring operations at one time, thereby simplifying the operation procedure and improving the operation efficiency. At the same time, the marker The marking depth of the device is 40-50μm, which makes the marking depth controllable, avoids the problem of insufficient marking depth, which leads to clear marking, and avoids the problem of safety if the marking depth is too deep; in addition, the precision of 1 degree is obtained through the pointer Angle value to make astigmatism axis orientation more accurate.

In short, the present invention adopts an integrated device for precise axial positioning combined with marking and scratching, which makes the positioning more accurate and the operation more convenient.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of the present invention;

Fig. 2 is the front view of the present invention;

Fig. 3 is the left view of the present invention;

Fig. 4 is the top view of the present invention;

Fig. 5 is a sectional view along A-A direction of Fig. 4;

Fig. 6 is a partial enlarged view at A of Fig. 4;

Figure 7 is a schematic diagram of a marker;

Fig. 8 is the schematic diagram of marking pin;

Fig. 9 is a positioning plate provided with a blocking sheet;

Fig. 10 is a left side view of Fig. 9 .

Explanation of reference signs:

1-positioning plate; 2-angle scale line; 3-support beam; 4-pointer; 5-marker; 6-positioning shaft; 7-marking needle; 8-pressing block; 9-shell; 10-marking head; 11 -coloring tip; 12-marking needle; 13-color material box; 14-limiting block; 15-limiting block block; 16-elastic reset piece; 17-positioning sleeve; ; 20-observation hole; 21-operation handle; 22-compression nut.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the above description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "one side", "the other side" and so on are based on the orientation or positional relationship shown in the drawings, or the Orientation or positional relationship that is conventionally placed is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a reference to this invention. Invention Limitations. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

Furthermore, terms such as the term "same" do not mean that the components are absolutely identical, but slight differences may exist. The term "vertical" just means that the positional relationship between components is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly inclined.

As shown in Figure 1-8, a kind of corneal astigmatism localization marking device provided by the present invention comprises:

The positioning plate 1 has the function of opening the eyelids, which is used to open the upper and lower eyelids and fully expose the corneal tissue. It is more convenient to operate by hand when locating astigmatism. The angle scale line 2 and the angle value are uniformly arranged on the top circumferential surface, and the minimum angle scale line is displayed. The value is 1 degree, and the angle value is set every 5 degrees, so that an angle accuracy of 1 degree can be obtained, making the axis position more accurate.

The support beam 3 is fixedly arranged between the inner walls of the positioning plate, and is used to support the marker and the pointer,

Pointer 4, rotated and set on the support beam, used to point to the angle scale line of the positioning plate,

The marker 5 is slidably arranged on the supporting beam, and is used for engraving and coloring the direction indicated by the pointer, and the engraving depth is 40-50 μm.

Further, the marker in this embodiment includes a positioning shaft 6, a marking needle 7, and a pressing block 8. The positioning shaft is slidably arranged on the support beam, that is, the positioning shaft can move relative to the support beam, so as to adjust the vertical direction to accommodate Changes in height of different corneas. At the same time, the marking needle is slidably set in the positioning axis for marking operation. The central axis of the marking needle and the center line of the pointer perpendicularly intersect, that is, the projection of the marking needle falls on the center line of the pointer, and the pointer The indicated angle and orientation is located on its center line, so that the marking point is located in the angular direction pointed by the pointer, ensuring that the marking point coincides with the angular direction, and the pressing block is slidably set above the marking needle, which is used to drive the marking needle for engraving Shading operation.

Further, the marking needle of the present embodiment includes a housing 9 and a marking head 10, a colorant cavity is arranged in the housing, and the marking head includes a colored tip 11 and an engraving needle 12, the colored tip communicates with the colorant cavity, and the marking area is colored and engraved. The needle is set inside the tinted tip and imprints in the colored area showing the axis of astigmatism.

Further, the top of the housing is provided with a color material box 13, the color material box communicates with the color material cavity to supplement the color material for the color material cavity, the color material box is made of hard materials such as iron or hard plastic, and has a certain pressure bearing capacity, thereby When the pressing block is arranged above the color material box, the marking needle can be driven for marking operation.

Further, the positioning shaft is provided with a needle body through hole and a color material box accommodating cavity, and a pressing block sliding groove is arranged above the color material box accommodating cavity. The diameter of the pressing block sliding groove is larger than the diameter of the color material box accommodating cavity. The diameter of the cavity is larger than the diameter of the through hole of the needle body. When the marking operation is performed by pressing the block, the pressing block can only move in the sliding groove of the pressing block, and the color material box can only move in the color material box accommodating cavity, and the moving range is limited to a certain extent.

Further, a limit block 14 is arranged between the shell and the marking head, a limit block through hole is arranged under the needle body through hole, a limit block stopper 15 is arranged under the limit block through hole, and a colored tip is arranged under the limit block stopper Through the hole, when the limit block abuts against the upper end surface of the limit block block, the length of the marking needle protruding from the positioning shaft is 40-50 μm. The marking depth of the marking needle can be ensured through the use of stoppers and stoppers.

Further, the toner box accommodating chamber is located below the toner box to be provided with an elastic reset member 16, and the elastic return member is sleeved on the shell. After a marking operation is completed, the pressing block and the marking needle can be returned to their original positions under the action of the elastic reset member.

When in use, first fix the positioning disc on the outer edge of the cornea of the affected eye, and make the center of the positioning disc coincide with the center of the cornea, then use the slit light to show the direction of the astigmatism axis, and then rotate the direction of the pointer to be consistent with the direction of the slit light. Adjust the positioning shaft to descend to the cornea. At this time, the positioning shaft and the bottom surface are in contact with the cornea. Press the pressing block to the limit position, that is, the limit block is against the upper end surface of the limit block block. At this time, the engraving needle protrudes The length of the positioning shaft is 40-50 μm, and the first mark with a depth of 40-50 μm is completed. After completion, lift up the marker, rotate the pointer to the scale direction 180 degrees from the original position, and then press the pressing block to form a 40-50 μm The second mark, the two marks are on a straight line, in the same direction as the axis of astigmatism. Because of the accurate depth and color display, the mark is very clear. At the same time, its scale accuracy is 1 degree, so its accuracy is also very high.

As an improvement of this embodiment, both the positioning plate and the supporting beam are made of transparent materials such as glass or acrylic. It is convenient to observe whether the cornea of the affected eye changes and whether the marking result is accurate during the marking operation. The pointer is made of colored materials, which is easy to align with the scale and read the value quickly.

As an improvement of this embodiment, a positioning sleeve 17 that is slidably engaged with the positioning shaft is fixedly provided on the supporting beam. The positioning shaft is slidingly arranged in the positioning sleeve, and the two can move relatively to adapt to changes in the height direction, such as different corneal heights of different people and marking from one side to the other.

As an improvement of this embodiment, the outer edge of the positioning disc is provided with an arc-shaped retaining groove 18 for blocking the upper and lower eyelids. The upper and lower eyelids can be stored in the arc-shaped retaining groove, so that the line of sight is unobstructed, and the operation is convenient and accurate.

As an improvement of this embodiment, a rotating shaft 19 is provided on the support beam, a rotating shaft hole is provided at the end of the pointer, and a compression nut 22 is provided at the front end of the rotating shaft, so as to facilitate fixing the pointer.

As an improvement of this embodiment, an observation hole 20 is provided at the center of the rotating shaft, and the center of the observation hole is located at the center of the positioning disc, so that the center of the cornea can be observed through the observation hole.

As an improvement of this embodiment, an operating handle 21 is provided on the outer edge of the positioning plate to make the operation more convenient.

As an improvement of this embodiment, the bottom of the positioning shaft is spherical, and the contact between the spherical surface and the corneal surface is non-irritating and comfortable.

As an improvement of this embodiment, the marking needle of this embodiment has a needle tip with a width of 0.2-0.5 mm, so that an impression of 0.2-0.5 mm wide can be carved on the cornea, which is easier to observe.

As an improvement of this embodiment, the positioning plate of this embodiment is symmetrically provided with eyelid shields, through which the upper and lower eyelids can be directly shielded, further improving the shielding effect, as shown in Figures 9-10.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (10)

1. A cornea astigmatism positioning marker device, which is characterized in that: comprising

The positioning disk has eyelid opening function, is used for opening the upper eyelid and the lower eyelid and fully exposing cornea tissue to facilitate operation,

the circumference surface of the top part of the device is uniformly provided with angle scale marks and angle values, the minimum indication value of the angle scale marks is 1 degree, the angle values are arranged at intervals of 5 degrees,

a supporting beam fixedly arranged between the inner walls of the positioning disk and used for supporting the marker and the pointer,

the pointer is rotationally arranged on the supporting beam and used for pointing to the angle scale line of the positioning disk,

the marker is arranged on the supporting beam in a sliding way and used for carrying out imprinting coloring on the pointer indication direction, and the imprinting depth is 40-50 mu m.

2. A corneal astigmatism positioning marker according to claim 1 and characterised in that: the marker comprises a positioning shaft, a marking needle and a pressing block, wherein the positioning shaft is arranged on the supporting beam in a sliding mode, the marking needle is arranged in the positioning shaft in a sliding mode, the axis of the marking needle is perpendicularly intersected with the central line of the pointer, and the pressing block is arranged above the marking needle in a sliding mode and used for driving the marking needle to carry out marking coloring operation.

3. A corneal astigmatism positioning marker according to claim 2 characterised in that: the marking needle comprises a shell and a marking head, wherein a pigment cavity is formed in the shell, the marking head comprises a coloring tip and a marking needle, the coloring tip is communicated with the pigment cavity to color a marking area, the marking needle is arranged inside the coloring tip, marking is performed in the color developing area, and the astigmatic axis position is displayed.

4. A corneal astigmatism positioning marker according to claim 3 characterised in that: the top of the shell is provided with a pigment box which is made of hard materials, and the pressing block is arranged above the pigment box for marking driving.

5. A corneal astigmatism positioning marker according to claim 4 and characterised in that: needle body through holes and toner cartridge accommodating cavities are formed in the positioning shaft, pressing block sliding grooves are formed in the upper portion of each toner cartridge accommodating cavity, the diameters of the pressing block sliding grooves are larger than those of the toner cartridge accommodating cavities, and the diameters of the toner cartridge accommodating cavities are larger than those of the needle body through holes.

6. A corneal astigmatism positioning marker according to claim 5 and characterised in that: a limiting block is arranged between the shell and the marking head, a limiting block through hole is arranged below the needle body through hole, a limiting block stop block is arranged below the limiting block through hole, a coloring tip through hole is arranged below the limiting block stop block, and when the limiting block abuts against the upper end face of the limiting block stop block, the length of the marking needle extending out of the positioning shaft is 40-50 mu m.

7. A corneal astigmatism positioning marker according to claim 5 and characterised in that: the toner cartridge accommodating cavity is arranged below the toner cartridge and is provided with an elastic reset piece, and the elastic reset piece is sleeved on the shell.

8. A corneal astigmatism positioning marker according to any of claims 1 to 7 characterised in that: the locating disc and the supporting beam are made of transparent materials, and the pointer is made of colored materials.

9. A corneal astigmatism positioning marker according to any of claims 1 to 7 characterised in that: and the supporting beam is fixedly provided with a positioning sleeve which is in sliding fit with the positioning shaft.

10. A corneal astigmatism positioning marker according to any of claims 1 to 7 characterised in that: the outer edge of the positioning disk is provided with an arc-shaped blocking groove for blocking upper and lower eyelids.