Femtosecond laser assisted corneal astigmatism incision release device

Abstract

The femtosecond laser-assisted corneal astigmatism incision release device comprises a liquid outlet device, a plurality of liquid outlets are formed in the front end of the liquid outlet device, a cavity is formed in the liquid outlet device and communicates with the liquid outlets, and the widths of the liquid outlets are gradually increased from inside to outside; the communicating pipe is used for conveying the liquid into the cavity; a cavity in the liquid outlet device is composed of a storage cavity and a flow guide cavity which are communicated, and liquid input through the communicating pipe is stored through the storage cavity and flows out of a liquid outlet through the flow guide cavity. The number of the storage cavities is the same as that of the liquid outlets; the liquid outlet device is provided with a flat end, the end face of the flat end backwards forms an arc-shaped recess, and the liquid outlet is formed in the arc-shaped recess. A blunt separation design is adopted, the front end is in a shovel shape, corneal epithelium can be easily ripped without causing peripheral loss, a corneal stroma layer astigmatism incision treated by femtosecond laser is fully separated through a front end liquid flow flushing design, and the possibility of postoperative astigmatism back is reduced as much as possible.

Description

Technical Field

[0001] The present invention relates to the field of ophthalmic surgery auxiliary equipment, and in particular to a femtosecond laser-assisted corneal astigmatism incision releaser. Background Art

[0002] Corneal incisions for correcting astigmatism include limbal arc relaxing incisions (LRI), peripheral corneal relaxing incisions (PCRI), contralateral clear corneal incisions (OCCI), and astigmatic keratotomy (AK). Today, femtosecond laser-assisted corneal relaxing incisions have significantly improved accuracy, positioning, and safety compared to traditional corneal astigmatism incisions.

[0003] The corneal astigmatism incision treated by femtosecond laser does not completely separate the tissue (it is in the shape of a stamp), and requires the use of instruments to help fully release it. Currently, there is no instrument specifically used for femtosecond laser-assisted corneal astigmatism release incision. Iris restorers or flushing needles are often used clinically to separate the corneal epithelium and stromal layer, which can easily cause complications such as corneal epithelial exfoliation and insufficient incision separation. There is a risk of reducing the effectiveness of astigmatism correction and increasing the risk of postoperative discomfort in patients. Therefore, a dedicated surgical auxiliary equipment is urgently needed. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent. To this end, the present invention aims to provide a device that accurately adapts to the corneal astigmatism incision after femtosecond laser treatment.

[0005] To achieve the above objectives, an embodiment of the present invention provides a femtosecond laser-assisted corneal astigmatism incisional release device, comprising:

[0006] The liquid outlet has a plurality of liquid outlets at the front end, a cavity is provided inside the liquid outlet, and the cavity is connected to the liquid outlet, and the width of the liquid outlet gradually increases from the inside to the outside;

[0007] a connecting tube for conveying liquid into the cavity;

[0008] The cavity inside the liquid dispenser consists of a connected storage cavity and a diversion cavity. The liquid inputted by the connecting tube is stored in the storage cavity and flows out from the liquid outlet through the diversion cavity. The number of storage cavities is the same as the number of liquid outlets.

[0009] The liquid outlet has a flat end, an end surface of the flat end forms an arc-shaped depression backward, and the liquid outlet is arranged in the arc-shaped depression.

[0010] The femtosecond laser-assisted corneal astigmatism incision releaser according to an embodiment of the present invention adopts a blunt separation design with a shovel-shaped front end, which can easily cut the corneal epithelium without causing peripheral damage. The front end liquid flow flushing design can fully separate the astigmatism incision in the corneal stroma layer treated by the femtosecond laser, thereby minimizing the possibility of astigmatism regression after surgery.

[0011] In addition, the femtosecond laser-assisted corneal astigmatism incisional release device proposed in the above embodiment of the present invention may also have the following additional technical features:

[0012] Optionally, the horizontal cross-section of the liquid outlet is trumpet-shaped.

[0013] Optionally, it also includes a liquid supply component, which consists of a power supply, a peristaltic pump, a hose and a controller. The power supply drives the peristaltic pump to work. One end of the hose is connected to the connecting pipe, and the other end is connected to the external water channel. The peristaltic pump drives the liquid in the hose to move, and the controller switches the power supply and starts and stops the peristaltic pump.

[0014] Optionally, the liquid dispenser includes a bottom plate and an upper cover, and the upper cover is made of a transparent material.

[0015] Furthermore, the upper cover is provided with an exhaust hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a side-angled perspective view according to one embodiment of the present invention;

[0017] Figure 2 A front perspective view according to one embodiment of the present invention;

[0018] Figure 3 A top-view perspective view according to an embodiment of the present invention;

[0019] Figure 4 Schematic diagram of the internal structure according to one embodiment of the present invention.

[0020] Description of labels:

[0021] Liquid dispenser 1 liquid outlet 11 bottom plate 12 upper cover 13 exhaust hole 131

[0022] Cavity 2 Storage chamber 21 Diversion chamber 22

[0023] Connecting pipe 3. DETAILED DESCRIPTION

[0024] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0025] The present invention adopts a blunt separation design with a shovel-shaped front end, which can easily cut the corneal epithelium without causing peripheral loss. The front end liquid flow flushing design can fully separate the astigmatism incision in the corneal stroma layer treated by femtosecond laser, minimizing the possibility of postoperative astigmatism regression.

[0026] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0027] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0028] Figures 1 to 4 A femtosecond laser-assisted corneal astigmatism incision release device according to an embodiment of the present invention comprises:

[0029] The liquid outlet 1 has a plurality of liquid outlets 11 at its front end. A cavity 2 is provided inside the liquid outlet 1. The cavity 2 is connected to the liquid outlet 11. The width of the liquid outlet 11 gradually increases from the inside to the outside.

[0030] The present invention works by cutting the corneal epithelium and then opening the incision by means of liquid flow. During the process, the water does not spray out, but flows out in a set manner. This is because the soft tissue of the human eye is fragile, and a small water pressure can cause damage to the cornea. Therefore, the design requirement of the liquid outlet 11 is to minimize the impact force as much as possible under the condition that the liquid has a certain shape when flowing out.

[0031] Therefore, the outlet of the liquid outlet 1 is set to gradually increase in width. When the liquid flows out of the cavity 2, the pressure gradually decreases, and the final outlet water flow shape is flat to adapt to the corneal incision.

[0032] Optionally, the horizontal cross-section of the liquid outlet 11 is trumpet-shaped, which can reduce the resistance to water outflow.

[0033] The connecting tube 3 delivers the liquid into the cavity 2. The present invention can have an end connected to the syringe nipple and connected to the syringe to facilitate the provision of liquid through the syringe, which can facilitate the promotion of the present invention by reducing the cost of use.

[0034] Optionally, it also includes a liquid supply component, which consists of a power supply, a peristaltic pump, a hose and a controller. The power supply drives the peristaltic pump to work. One end of the hose is connected to the connecting pipe 3, and the other end is connected to the external waterway. The peristaltic pump drives the liquid in the hose to move, and the controller switches the power supply and starts and stops the peristaltic pump.

[0035] The cavity 2 in the liquid outlet 1 is composed of a connected storage cavity 21 and a diversion cavity 22. The liquid input by the connecting pipe 3 is stored in the storage cavity 21 and flows out from the liquid outlet 11 through the diversion cavity 22. The number of storage cavities 21 is the same as the number of liquid outlets 11.

[0036] The storage chamber 21 is used to buffer the incoming liquid. After the liquid in the storage chamber 21 reaches a certain capacity, it will only flow out from the guide chamber 22. The reason for adopting this structure is that when used in conjunction with a syringe, the resistance of the syringe from a static state to a liquid-discharging state is greater than the resistance of uniform propulsion. Poor control will produce a short-term impact force, and the storage chamber 21 can absorb this part of the impact force and provide a buffering effect.

[0037] Optionally, the liquid discharger 1 includes a bottom plate 12 and an upper cover 13, and the upper cover 13 is made of a transparent material. This structural setting is to facilitate the surgeon to observe the liquid flow state inside the liquid discharger 1 during use, and can also reduce the manufacturing difficulty: the upper half of the storage chamber 21 and the channel with the connecting tube 3 are formed in the upper cover 13, and the open part of the bottom plate 12 facilitates the manufacture of the lower part of the storage chamber 21 and the diversion chamber 22.

[0038] Furthermore, the upper cover 13 is provided with an exhaust hole 131. When liquid is injected into the storage chamber 21, the internal air can be discharged from the exhaust hole 131, and the liquid in the entire cavity can be kept in a state of equilibrium with the external pressure. Because the liquid is injected into the cavity 2, there may be local air that is not discharged, and it is repeatedly in a compressed and released state during use, resulting in the output of the liquid being unstable and sometimes large and sometimes small.

[0039] The liquid dispenser 1 has a flat end, the end surface of which forms an arc-shaped depression backwards, and the liquid outlet 11 is arranged in the arc-shaped depression.

[0040] A specific embodiment is as follows: the width of the liquid dispenser 1 is between 2.8 and 3.2 mm, with a preferred size of 3 mm. The edges of the liquid outlets 11 on both sides are 0.4 mm away from the sides of the liquid dispenser 1, and the widest part of the liquid outlet 11 is 0.6 mm. There are three liquid outlets 11 of the same size, evenly distributed at the front end of the liquid dispenser 1, with the middle liquid outlet 11 located on the midline of the liquid dispenser 1. The side of the liquid dispenser 1 is shaped like a whistle, and the arched portion of the whistle accommodates the storage chamber 21.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0042] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0043] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0044] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. Femtosecond laser-assisted corneal astigmatism incisional release device, characterized by: include The liquid outlet has a plurality of liquid outlets at the front end, a cavity is provided inside the liquid outlet, and the cavity is connected to the liquid outlet, and the width of the liquid outlet gradually increases from the inside to the outside; a connecting tube for conveying liquid into the cavity; The cavity in the liquid outlet is composed of a connected storage cavity and a diversion cavity. The liquid inputted by the connecting tube is stored in the storage cavity and flows out from the liquid outlet through the diversion cavity. The number of storage chambers is the same as the number of liquid outlets; The liquid outlet has a flat end, an end surface of the flat end forms an arc-shaped depression backward, and the liquid outlet is arranged in the arc-shaped depression.

2. The femtosecond laser-assisted corneal astigmatism incisional release device according to claim 1, characterized in that: The horizontal cross section of the liquid outlet is trumpet-shaped.

3. The femtosecond laser-assisted corneal astigmatism incisional release device according to claim 1, characterized in that: It also includes a liquid supply component, which consists of a power supply, a peristaltic pump, a hose and a controller. The power supply drives the peristaltic pump to work. One end of the hose is connected to the connecting pipe, and the other end is connected to the external water channel. The peristaltic pump drives the liquid in the hose to move, and the controller switches the power supply and starts and stops the peristaltic pump.

4. The femtosecond laser-assisted corneal astigmatism incisional release device according to claim 1, characterized in that: The liquid dispenser comprises a bottom plate and an upper cover, and the upper cover is made of a transparent material.

5. The femtosecond laser-assisted corneal astigmatism incisional release device according to claim 4, characterized in that: The upper cover is provided with an exhaust hole.

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