Full femtosecond operation lens separator with liquid storage tank

Abstract

The utility model discloses a full femtosecond surgery lens separator with a liquid storage tank, which relates to the field of medical instruments and comprises a separation shovel and a handle, the separation shovel and the handle are integrally formed, the separation shovel comprises an arc section, the liquid storage tank and a straight rod section, the bottom of the straight rod section is connected with the handle, and the liquid storage tank is arranged in the arc section. The top of the straight rod section and the arc section are connected together in an obtuse angle, a liquid storage tank is arranged between the arc section and the straight rod section, the cross section of the liquid storage tank is an oval groove, the liquid storage tank is located at the bottom of the arc section, and the groove direction of the liquid storage tank is upward when the liquid storage tank is used. According to the utility model, a small amount of balanced salt solution is introduced between the matrix layers to play roles in lubricating and reducing separation resistance, so that the lens can be completely taken out, and foreign matters can be prevented from entering the matrix layers along with the balanced salt solution.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a full femtosecond surgical lens separator with a liquid storage tank. Background Art

[0002] Femtosecond laser small incision lenticule extraction (SMILE) is widely used in the field of corneal refractive surgery due to its advantages such as flapless, minimally invasive, better predictability and stability, and lower incidence of iatrogenic dry eye. SMILE surgery has three key steps: (1) perfect corneal center alignment and laser scanning; (2) smooth flap formation of the upper and lower layers of the incision; and (3) complete and rapid lens separation and removal. In clinical work, poor lens separation often leads to corneal epithelial damage, epithelial detachment, and upper and lower lens layer misalignment, which not only increases surgical complications but also brings great discomfort to patients. With the development of SMILE surgery, how to improve the separation method to reduce corneal damage has become an important research issue.

[0003] At present, the commonly used lens separation methods in clinical practice include conventional separation method, water infiltration separation method, and incision water infiltration separation method. The conventional separation method is to separate the incision after femtosecond laser scanning, enter under the corneal cap, first separate the front surface of the matrix lens, then separate the back surface of the lens, remove the lens, and rinse and reposition under the corneal cap.

[0004] The water infiltration separation method is to enter the corneal cap after femtosecond laser scanning, first separate the front and back boundaries of the lens at the edge of the lens, then inject balanced saline into the incision and wet the corneal surface, then separate the front and back surfaces of the lens in turn, remove the lens, and rinse and reposition under the corneal cap. The incision water separation method is to use a lens separation spatula with a drop of sodium lactate Ringer injection to infiltrate the incision after femtosecond laser scanning, and then separate the upper and lower surfaces of the matrix lens respectively after the blunt head of the lens separation spatula is dipped in a drop of balanced salt solution to infiltrate the incision, and finally use a drop of balanced salt solution to infiltrate the incision with the head of the microlens forceps, and then remove the corneal matrix lens. The water infiltration separation method uses water to enter the interlayer, which reduces the friction during separation and lens removal, improves the efficiency of lens separation, and reduces the damage to the corneal incision. However, the water infiltration separation method easily allows more water to enter the interlayer, affecting the patient's early visual recovery, and there is an increased risk of foreign body entry and infection. The incision hydrodissection method reduces the amount of water entering the interlayers, thus avoiding affecting early postoperative vision. However, it is not easy to control the amount of liquid by using a separation spatula to dip in balanced salt solution, and there is still a risk of bringing foreign matter such as oil and epithelial cells into the interlayers of the corneal stroma.

[0005] Therefore, those skilled in the art urgently need to provide an all-femtosecond surgical lens separator with a liquid reservoir to introduce a small amount of balanced salt solution into the matrix layers to lubricate and reduce separation resistance, thereby facilitating the complete removal of the lens and preventing foreign matter from entering the matrix layers with the balanced salt solution. Utility Model Content

[0006] The utility model aims to provide a full femtosecond surgical lens separator with a liquid storage tank, which introduces a small amount of balanced salt solution into the matrix layer to play a role of lubrication and reduce separation resistance, thereby facilitating the complete removal of the lens and preventing foreign matter from entering the matrix layer with the balanced salt solution.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] The utility model discloses a full-femtosecond surgical lens separator with a liquid storage tank, comprising a separation shovel and a handle, wherein the separation shovel and the handle are integrally formed, the separation shovel comprises an arc segment, a liquid storage tank and a straight rod segment, the bottom of the straight rod segment is connected to the handle, the top of the straight rod segment is connected to the arc segment at an obtuse angle, a liquid storage tank is arranged between the arc segment and the straight rod segment, the liquid storage tank is located at the bottom of the arc segment, and the groove of the liquid storage tank is facing upwards when in use.

[0009] Preferably, the cross section of the arc segment is a flat ellipse, and the curvature of the arc segment is close to the corneal curvature, and the horizontal diameter and vertical diameter of the cross section of the arc segment gradually decrease from the bottom of the arc segment to the head direction.

[0010] Preferably, the cross-section of the liquid storage tank is an elliptical groove, and the long axis direction of the elliptical groove of the liquid storage tank is consistent with the long axis direction of the circular arc segment.

[0011] Preferably, the cross-section of the straight rod section is circular, the diameter of the straight rod section gradually decreases from the bottom to the top, and the end of the straight rod section with a smaller diameter is connected to the liquid storage tank, and the end of the straight rod section with a larger diameter is connected to the handle.

[0012] Preferably, the handle is provided with anti-slip patterns.

[0013] Compared with the prior art, the beneficial technical effects of the utility model are:

[0014] The utility model discloses an all-femtosecond surgical lens separator with a liquid reservoir. The liquid reservoir is designed at the corner of the arc section and the straight rod section of the separation shovel. After the separation shovel enters under the corneal cap, as little balanced salt solution as possible can be introduced into the matrix layer, which plays a role of lubrication and reducing separation resistance, does not affect the patient's early postoperative vision recovery, and can prevent foreign matter such as oil, epithelial cells, etc. from entering the matrix layer with the balanced salt solution, thereby reducing the occurrence of postoperative complications. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 This is a schematic structural diagram of a lens separator for all-femtosecond surgery with a liquid storage tank according to the utility model;

[0017] Figure 2 This is a side view of the separation shovel of the utility model;

[0018] Figure 3 This is a top view of the separation shovel of the utility model;

[0019] Figure 4 This is a cross-sectional view of the arc segment AA of the utility model;

[0020] Figure 5 This is a cross-sectional view of the liquid storage tank of the utility model taken along the AA direction;

[0021] Figure 6 This is an enlarged view of the K-direction structure of the utility model.

[0022] Explanation of the reference numerals: 1. separation shovel; 2. handle; 3. anti-slip pattern; 4. arc segment; 5. liquid storage tank; 6. straight rod segment. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] like Figure 1-6 As shown, a full-femtosecond surgical lens separator with a liquid reservoir comprises a separation shovel 1 and a handle 2, wherein the separation shovel 1 and the handle 2 are integrally formed, and the separation shovel 1 comprises an arc segment 4, a liquid reservoir 5 and a straight rod segment 6, wherein the bottom of the straight rod segment 6 is connected to the handle 2, and the top of the straight rod segment 6 is connected to the arc segment 4 at an obtuse angle, and a liquid reservoir 5 is arranged between the arc segment 4 and the straight rod segment 6, wherein the liquid reservoir 5 is located at the bottom of the arc segment 4, and the groove of the liquid reservoir 5 faces upward when in use.

[0025] Specifically, the arc segment 4, the liquid storage tank 5 and the straight rod segment 6 are integrally formed.

[0026] The cross section of the arc segment 4 is a flat ellipse, and the curvature of the arc segment 4 is close to the corneal curvature, which is convenient for separating the lens. The horizontal diameter and the vertical diameter of the cross section of the arc segment 4 gradually decrease from the bottom to the head of the arc segment 4, which is convenient for the head of the arc segment 4 to enter under the corneal cap from the incision.

[0027] The cross section of the liquid reservoir 5 is an elliptical groove, and the long axis direction of the elliptical groove of the liquid reservoir 5 is consistent with the long axis direction of the arc segment. When in use, it is convenient to introduce as little balanced salt solution as possible into the matrix layer, which plays a role in lubrication and reducing separation resistance; and foreign matter can be prevented from entering the matrix layer with the balanced salt solution, reducing the occurrence of postoperative complications.

[0028] Specifically, in one embodiment, the water storage capacity of the liquid storage tank 5 is 10-15ul, and the distance from the head end is about 6mm.

[0029] The cross section of the straight rod section 6 is circular, and the diameter of the straight rod section 6 gradually decreases from the bottom to the top. The end of the straight rod section 6 with a smaller diameter is connected to the liquid storage tank 5, and the end of the straight rod section 6 with a larger diameter is connected to the handle 2.

[0030] The handle 2 is provided with anti-skid patterns 3 to increase friction and prevent the instrument from slipping during surgery, making the surgery safer.

[0031] The use process of the utility model is as follows:

[0032] Step 1: Use a femtosecond laser to scan the lens in the corneal stroma, separate the lens edge with an incision hook, and then use a lens separator to separate the stroma lens;

[0033] Step 2: dripping the balanced salt solution into the groove of the liquid storage tank 5;

[0034] Step 3: Holding the handle 2, slowly extend the arc segment 4 of the separation shovel 1 through the edge of the corneal flap to under the corneal cap, that is, under the front surface of the lens. When the edge of the reservoir 5 contacts the corneal incision, due to the infiltration phenomenon, the balanced salt solution in the reservoir 5 will enter the corneal stroma layer and expand along the layer, playing a role of lubrication and reducing separation resistance;

[0035] Step 4: Use arc segment 4 to completely separate the front and back surfaces of the lens, so that the matrix lens in the cornea is completely separated and fully freed, and then the lens is completely removed from the peripheral incision.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A femtosecond surgery lens separator with a liquid storage tank, characterized in that: The invention comprises a separation shovel (1) and a handle (2), wherein the separation shovel (1) and the handle (2) are integrally formed, and the separation shovel (1) comprises an arc segment (4), a liquid storage tank (5) and a straight rod segment (6), wherein the bottom of the straight rod segment (6) is connected to the handle (2), and the top of the straight rod segment (6) is connected to the arc segment (4) at an obtuse angle, and a liquid storage tank (5) is arranged between the arc segment (4) and the straight rod segment (6), and the liquid storage tank (5) is located at the bottom of the arc segment (4), and when in use, the groove of the liquid storage tank (5) faces upward.

2. The all-femtosecond surgical lens separator with a liquid storage tank according to claim 1, characterized in that: The cross section of the arc segment (4) is a flat ellipse, and the curvature of the arc segment (4) is close to the corneal curvature. The horizontal diameter and the vertical diameter of the cross section of the arc segment (4) gradually decrease from the bottom of the arc segment (4) to the head direction.

3. The all-femtosecond surgical lens separator with a liquid storage tank according to claim 2, characterized in that: The cross section of the liquid storage tank (5) is an elliptical groove, and the long axis direction of the elliptical groove of the liquid storage tank (5) is consistent with the long axis direction of the circular arc segment.

4. The all-femtosecond surgical lens separator with a liquid storage tank according to claim 3, characterized in that: The cross section of the straight rod section (6) is circular, and the diameter of the straight rod section (6) gradually decreases from the bottom to the top, and the end of the straight rod section (6) with a smaller diameter is connected to the liquid storage tank (5), and the end of the straight rod section (6) with a larger diameter is connected to the handle (2).

5. The all-femtosecond surgical lens separator with a liquid storage tank according to claim 4, characterized in that: The handle (2) is provided with anti-slip patterns (3).

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