WO2023243808A1

WO2023243808A1 - Anterior segment stabilization device

Info

Publication number: WO2023243808A1
Application number: PCT/KR2023/002767
Authority: WO
Inventors: 나경선; 박선경; 황규덕
Original assignee: 가톨릭대학교 산학협력단
Priority date: 2022-06-16
Filing date: 2023-02-28
Publication date: 2023-12-21
Also published as: KR20230172951A

Abstract

The present invention provides an anterior segment stabilization device comprising: a support part; a fixing part including a plurality of fixing members extending in the outward direction from the support part so as to be spaced a predetermined distance from each other in parallel; a membrane part including a plurality of membranes for connecting each of the plurality of fixing members; and a detachment part, which can be attached/detached to/from the ends of the plurality of fixing members and is fixed to the anterior segment of the eye, wherein the plurality of fixing members radially spread while being positioned on the same plane, the plurality of membranes come into close contact with the anterior segment of the eye, and thus, if the pressure of the anterior segment is relatively lower than the pressure of the posterior segment or the pressure of the anterior chamber is relatively lower than the pressure of the posterior segment or the posterior chamber, normal force for preventing vitreous pressure from increasing is provided.

Description

Anterior segment stabilization device

The present invention relates to an anterior segment stabilization device. More specifically, the present invention relates to an anterior segment stabilization device, and more specifically, in cases where ocular damage such as corneal laceration or ophthalmic surgery such as vitrectomy or corneal transplantation occurs through a membrane unit that is in close contact with the anterior segment of the eye. ) Anterior segment structures that occur when the pressure of the anterior segment is relatively low compared to the pressure of the posterior segment or when the pressure of the anterior chamber is relatively low compared to the pressure of the posterior segment or posterior chamber. It relates to an anterior segment stabilization device that stabilizes anterior segment structures by providing a normal force that counteracts the unstable state of the iris (iris, lens, etc.) and the resulting vitreous herniation.

In general, corneal transplant surgery aims to create a clear central cornea and sharpen the visual axis, minimize refractive error, maintain the structure of the eye, relieve pain, and eliminate infection.

If the recipient cornea is removed during surgery and the eye is in an open sky state, the lens and vitreous body may prolapse due to pressure inside the eye, causing choroidal hemorrhage, which may cause blindness during surgery.

Choroidal expulsive hemorrhage has risk factors such as old age, myopia, glaucoma, inflammation, low intraocular pressure, and past history of trauma. When the recipient cornea is cut into a circular shape, aqueous humor leaks out and intraocular pressure rapidly decreases, causing expulsive hemorrhage. It can happen.

For this purpose, intraocular pressure is controlled with medication or physical pressure before surgery, and during surgery, a circular scleral fixation ring that supports the sclera is used to prevent the lens or vitreous body from being pushed forward due to scleral depression that may occur when the eye is opened. do.

However, the methods according to the prior art described above cannot fundamentally prevent prolapse of the vitreous body and lens in the posterior part, and the scleral ring has the disadvantage of narrowing the surgical area, limiting the surgical range, and causing astigmatism.

Accordingly, there is a need to develop technology that prevents the vitreous body from escaping toward the anterior segment and allows it to remain in the posterior segment.

(Patent Document 1) Registered Patent Publication No. 10-1837031 (2018.03.05.)

The purpose of the present invention to solve the above problem is that the membrane attached to the fixing part unfolds due to the operation of the fixing part and comes into close contact with the anterior segment of the eye, thereby reducing the pressure of the anterior segment to the posterior segment. ) or when the pressure in the anterior chamber is relatively low compared to the pressure in the posterior or posterior chamber, it provides a down force against the vitreous pressure. By preventing vitreous pressure from increasing, the anterior segment stabilization device prevents the patient's eye lesions from further worsening and supports safe and effective procedures during eye-related surgeries.

In addition, the purpose of the present invention to solve the above problem is that the eye is damaged and the pressure in the anterior segment is relatively low compared to the pressure in the posterior segment. In the case of an emergency situation where the pressure in the posterior chamber or posterior chamber is relatively low, an anterior chamber stabilization device is provided that prevents the vitreous pressure from increasing by spreading the membrane at the lesion site of the eye.

The technical problem to be achieved by the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. There will be.

The configuration of the present invention to achieve the above object includes a support part; a fixing part including a plurality of fixing members extending outwardly from the support part to be parallel and spaced apart from each other by a predetermined distance; a membrane portion including a plurality of membranes connecting the plurality of fixing members to each other; and a detachable part that is detachable from the ends of the plurality of fixing members and is fixed to the anterior segment of the eye. As the plurality of fixing members are radially unfolded while positioned on the same plane, the plurality of membranes are formed. Due to close contact with the anterior segment of the eye, the pressure of the anterior segment is relatively lower than the pressure of the posterior segment, or the pressure of the anterior chamber is lower than that of the posterior segment or posterior chamber. An anterior segment stabilizing device is provided in that a normal force is provided to prevent the vitreous pressure from increasing when it is relatively low compared to the pressure.

In addition, the configuration of the present invention for achieving the above object includes a support portion including a vertical support portion and a horizontal support portion coupled to be perpendicular to the vertical support portion; a fixing part including a plurality of fixing members extending outwardly from the vertical support part to be parallel and spaced apart from each other by a predetermined distance; a membrane portion that connects the plurality of fixing members and includes a plurality of membranes that connect the horizontal support portion to a fixing member adjacent to the horizontal support portion among the plurality of fixing members; and a detachable part that is detachable from the ends of the plurality of fixing members and is fixed to the anterior segment of the eye. As the plurality of fixing members are radially unfolded while positioned on the same plane, the plurality of membranes are formed. Due to close contact with the anterior segment of the eye, the pressure of the anterior segment is relatively lower than the pressure of the posterior segment, or the pressure of the anterior chamber is lower than that of the posterior segment or posterior chamber. An anterior segment stabilizing device is provided in that a normal force is provided to prevent the vitreous pressure from increasing when it is relatively low compared to the pressure.

In addition, the configuration of the present invention to achieve the above object includes a support part; A fixing part including a plurality of fixing members located inside the support part; a membrane portion attached to at least a portion of the plurality of fixing members; A push part located inside the support part and reciprocating in a straight line so as to be connected to the plurality of fixing members; and a detachable part that is detachable from the ends of the plurality of fixing members and is fixed to the anterior segment of the eye, wherein the plurality of fixing members are exposed to the outside of the support part by the push part and spread radially. As the membrane part is in close contact with the anterior segment of the eye, the pressure of the anterior segment is relatively lower than the pressure of the posterior segment, or the pressure of the anterior chamber is lower than that of the posterior segment or behind the anterior segment ( An anterior segment stabilization device is provided by providing a normal force to prevent the vitreous pressure from increasing when it is relatively low compared to the posterior chamber pressure.

In addition, the configuration of the present invention to achieve the above object includes a support portion; A fixing part made of elastic material located inside the support part; A membrane portion attached to the fixing portion; A push part located inside the support part to be connected to the fixing part and reciprocating in a straight line; and a detachable part that is detachable on the fixing part and fixed to the anterior segment of the eye, wherein the fixing part is exposed to the outside of the support part by the push part and unfolds to form a circle, so that the membrane part is attached to the eye. Due to close contact with the anterior segment, the pressure of the anterior segment is relatively lower than the pressure of the posterior segment, or the pressure of the anterior segment is lower than the pressure of the posterior segment or posterior chamber. An anterior segment stabilization device is provided, wherein a normal force is provided to prevent vitreous pressure from increasing when it is relatively low.

In an embodiment of the present invention, the membrane portion may be made of a flexible material.

In an embodiment of the present invention, the membrane portion may be made of any one of silicone, polypropylene, and poly(methyl methacrylate) (PMMA).

In an embodiment of the present invention, when the diameter of the cornea included in the anterior segment is 12 mm, the average intraocular pressure is 10 mmHg to 21 mmHg, and the tensile load applied to the membrane unit is 6 N, the normal force is 1 N. You can do this.

In an embodiment of the present invention, the thickness of the membrane portion may be 1 μm or more.

In an embodiment of the present invention, the detachable portion may be formed in a hook shape.

In an embodiment of the present invention, the plurality of membranes may have a fan-shaped shape.

In an embodiment of the present invention, the support portion may be a vertical support portion standing upright, and the vertical support portion may be made of a flexible material.

In an embodiment of the present invention, the plurality of fixing members include a first fixing member extending outward from the outer surface of the support part to be perpendicular to the support part, and a first fixing member located on an upper part of the first fixing member and an outer surface of the support part. a second fixing member extending outwardly from the support part to be perpendicular to the support part, a third fixing member located on an upper part of the second fixing member and extending outwardly from the outer surface of the support part to be perpendicular to the support part, and the third fixing member A fourth fixing member located on top of the fixing member and extending outward from the outer surface of the support part to be perpendicular to the support part, and a fourth fixing member located on top of the fourth fixing member and extending outward from the outer surface of the support part perpendicular to the support part. It is a fifth fixing member extending in one direction, and the first to fifth fixing members and the vertical support portion may be located on the same plane.

In an embodiment of the present invention, the plurality of membranes include a first membrane connecting the first fixing member and the second fixing member, a second membrane connecting the second fixing member and the third fixing member, and It may be characterized as a third membrane connecting the third fixing member and the fourth fixing member, and a fourth membrane connecting the fourth fixing member and the fifth fixing member.

In an embodiment of the present invention, the support portion includes a vertical support portion erected in a vertical direction; and a horizontal support part extending upward and downward from the center of the vertical support part, wherein the horizontal support part and the vertical support part have a cross shape and may be made of a flexible material.

In an embodiment of the present invention, the plurality of fixing members include a first fixing member extending in one direction from the outer surface of the vertical support part to be perpendicular to the vertical support part, and positioned between the first fixing member and the horizontal support part. A second fixing member extending in one direction from the outer surface of the vertical support part to be perpendicular to the vertical support part, and a second fixing member located on an upper part of the horizontal support part and extending in the other direction from the outer surface of the vertical support part to be perpendicular to the vertical support part. 3 fixing members and a fourth fixing member located on top of the third fixing member and extending from the outer surface of the vertical support in the other direction perpendicular to the vertical support, the first to fourth fixing members and the vertical support. And the horizontal support portion may be located on the same plane.

In an embodiment of the present invention, the plurality of membranes include a first membrane connecting the first fixing member and the second fixing member, a second membrane connecting the second fixing member and the transverse support part, and the transverse support part. and a third membrane connecting the third fixing member and a fourth membrane connecting the third fixing member and the fourth fixing member.

In an embodiment of the present invention, the support part is a vertical support part that may be made of a flexible material, and the plurality of fixing members include a first fixing member located inside the vertical support part and connected to the push part, and the vertical support part. a second fixing member located inside and connected to the push unit and a third fixing member located inside the vertical support unit and connected to the push unit, and when the push unit moves straight forward, the first to first fixing members 3 The fixing member may be characterized as being radially unfolded while being exposed to the outside of the vertical support part.

In an embodiment of the present invention, the membrane portion may be formed in a circular shape and attached to the first to third fixing members.

The effect of the present invention according to the above configuration is that the membrane attached to the fixing part is unfolded by the operation of the fixing part and comes into close contact with the anterior segment of the eye, so that the pressure of the anterior segment is reduced to the posterior segment. When the pressure is relatively low compared to the pressure of the anterior chamber or the pressure of the anterior chamber is relatively low compared to the pressure of the posterior or posterior chamber, it provides a vertical force (down force) against the vitreous pressure, making it advantageous. By preventing body pressure from increasing, the patient's eye lesions can be prevented from further worsening and the surgical effect can be improved by supporting safe and effective procedures during eye-related surgeries.

In addition, the effect of the present invention according to the above configuration is that the eye is damaged and the pressure in the anterior segment is relatively low compared to the pressure in the posterior segment, or the pressure in the anterior chamber is lower than the pressure in the posterior segment. In the case of an emergency situation where the pressure is relatively low compared to the pressure in the posterior chamber or posterior chamber, the vitreous pressure is prevented from increasing by spreading the membrane over the lesion site of the eye, enabling a rapid response even in an emergency situation.

The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

Figure 1 is a block diagram showing an anterior segment stabilization device according to an embodiment of the present invention.

Figure 2 is a side view from one direction showing the anterior segment stabilizing device according to the first embodiment of the present invention.

Figures 3 (a) and (b) are plan views in one direction showing before and after the membrane portion provided in the anterior segment stabilizing device according to the first embodiment of the present invention is unfolded.

Figure 4 is a side view from one direction showing the anterior segment stabilization device according to the second embodiment of the present invention.

Figures 5 (a) and (b) are plan views in one direction showing before and after the membrane portion provided in the anterior segment stabilizing device according to the second embodiment of the present invention is unfolded.

Figure 6 is a side view from one direction showing the anterior segment stabilization device according to the third embodiment of the present invention.

Figure 7 is a side view from one direction showing the membrane portion provided in the anterior segment stabilization device according to the third embodiment of the present invention in an unfolded state.

Figures 8 (a) and (b) are side views from one direction showing differently applied numbers of a plurality of fixing members provided in the anterior segment stabilizing device according to the third embodiment of the present invention.

Figure 9 is a plan view from one direction showing the anterior segment stabilizing device according to the fourth embodiment of the present invention.

Figure 10 is a conceptual diagram showing the vertical force (down force) provided by the anterior segment stabilization device according to the first to fourth embodiments of the present invention.

Figure 11 is a graph showing stress according to strain as a result of a tensile test of a silicon thin film.

Figure 12 is a table comparing the tensile and knot security properties of surgical sutures.

The most preferred embodiment according to the present invention is a support part; a fixing part including a plurality of fixing members extending outwardly from the support part to be parallel and spaced apart from each other by a predetermined distance; a membrane portion including a plurality of membranes connecting the plurality of fixing members to each other; and a detachable part that is detachable from the ends of the plurality of fixing members and is fixed to the anterior segment of the eye. As the plurality of fixing members are radially unfolded while positioned on the same plane, the plurality of membranes are formed. Due to close contact with the anterior segment of the eye, the pressure of the anterior segment is relatively lower than the pressure of the posterior segment, or the pressure of the anterior chamber is lower than that of the posterior segment or posterior chamber. When it is relatively low compared to the pressure, a normal force is provided to prevent the vitreous pressure from increasing.

Hereinafter, the present invention will be described with reference to the attached drawings. However, the present invention may be implemented in various different forms and, therefore, is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts that are not related to the description are omitted, and similar parts are given similar reference numerals throughout the specification.

Throughout the specification, when a part is said to be "connected (connected, contacted, combined)" with another part, this means not only "directly connected" but also "indirectly connected" with another member in between. "Includes cases where it is. Additionally, when a part is said to “include” a certain component, this does not mean that other components are excluded, but that other components can be added, unless specifically stated to the contrary.

The terms used herein are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “comprise” or “have” are intended to indicate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

Hereinafter, the present invention described is that the pressure of the anterior segment is relatively low compared to the pressure of the posterior segment, or the pressure of the anterior chamber is lower than the pressure of the posterior segment or posterior chamber. If it is relatively low compared to , this is a technique applied to .

First, in the present invention, the pressure of the anterior segment is relatively lower than the pressure of the posterior segment, or the pressure of the anterior chamber is lower than the pressure of the posterior segment or posterior chamber. When it is relatively low, it is used during surgery related to the patient's eye, and is exemplified by full-thickness keratoplasty.

Next, in the present invention, due to damage to the eye, the pressure in the anterior segment is relatively low compared to the pressure in the posterior segment, or the pressure in the anterior chamber is lowered in the posterior segment or posterior chamber. In the case of an emergency situation where the pressure is relatively low compared to the chamber pressure, the membrane of the present invention can be temporarily spread at the damaged location of the eye to prevent the vitreous pressure from increasing further.

1. 제1 실시예: 전안부 안정화장치1. First embodiment: anterior segment stabilization device

Hereinafter, an anterior segment stabilization device according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3.

Specifically, Figure 1 shows all the components of the anterior segment stabilization device according to the first to fourth embodiments of the present invention, and is not limited to any one embodiment.

Referring to Figures 1 and 2, the anterior segment stabilizing device 100 according to an embodiment of the present invention includes a support part 110, a fixing part 120, a membrane part 130, and a detachable part 150. , As the plurality of fixing members (121, 122, 123, 124, 125) are spread radially while located on the same plane, the plurality of membranes (131, 132, 133, 134) come into close contact with the anterior segment of the eye, If the pressure of the anterior segment is relatively low compared to the pressure of the posterior segment or the pressure of the anterior chamber is relatively low compared to the pressure of the posterior segment or posterior chamber, it is advantageous. A normal force (down force) is provided to prevent body pressure from increasing.

Referring to Figure 2, the support part 110 is a vertical support part 111 that stands upright.

The vertical support portion 111 may be made of a flexible material.

Specifically, the vertical support part 110 may be an annular rotating body with a filled interior (e.g., cylindrical shape) or an annular rotating body with an empty interior (e.g., a pipe shape).

In addition, the vertical support portion 110 shown in FIG. 2 is exaggerated to be long in the vertical direction, but in reality, the length of the vertical support portion 110 may be formed in micrometer or nanometer units.

The fixing part 120 may be made of a flexible material.

In addition, the fixing part 120 includes a plurality of fixing

members

121, 122, 123, 124, and 125 extending outward from the support part 110 in parallel while being spaced a predetermined distance apart from each other.

Here, the plurality of fixing

members

121, 122, 123, 124, and 125 include the first fixing member 121, the second fixing member 122, the third fixing member 123, the fourth fixing member 124, and This is the fifth fixing member (125).

The first fixing member 121 extends outward from the outer surface of the support part 110 to be perpendicular to the support part 110.

Specifically, the first fixing member 121 extends from the outer surface of the vertical support portion 111 in an outward direction (=other direction) perpendicular to the vertical support portion 111.

The second fixing member 122 is located on the upper part of the first fixing member 121 and extends outward from the outer surface of the support part 110 to be perpendicular to the support part 110.

Specifically, the second fixing member 122 is located on the upper part of the first fixing member 121 and extends from the outer surface of the vertical support part 111 in an outward direction (=other direction) perpendicular to the vertical support part 111.

The third fixing member 123 is located on the upper part of the second fixing member 122 and extends outward from the outer surface of the support part 110 to be perpendicular to the support part 110.

Specifically, the third fixing member 123 is located on the upper part of the second fixing member 122 and extends from the outer surface of the vertical support part 111 in an outward direction (=other direction) perpendicular to the vertical support part 111.

The fourth fixing member 124 is located on the upper part of the third fixing member 123 and extends outward from the outer surface of the support part 110 to be perpendicular to the support part 110.

Specifically, the fourth fixing member 124 is located on the upper part of the third fixing member 123 and extends from the outer surface of the vertical support portion 111 in an outward direction (=other direction) perpendicular to the vertical support portion 111.

The fifth fixing member 125 is located on the upper part of the fourth fixing member 124 and extends outward from the outer surface of the support part 110 to be perpendicular to the support part 110.

Specifically, the fifth fixing member 125 is located on the upper part of the fourth fixing member 124 and extends from the outer surface of the vertical support portion 111 in an outward direction (=other direction) perpendicular to the vertical support portion 111.

That is, the first to fifth fixing

members

121, 122, 123, 124, and 125 extend in the same direction.

The above-mentioned first to fifth fixing

members

121, 122, 123, 124, and 125 and the vertical support portion 111 are located on the same plane as shown in FIG. 2.

The membrane portion 130 includes a plurality of

membranes

131, 132, 133, and 134 respectively connecting a plurality of fixing

members

121, 122, 123, 124, and 125.

Here, the membrane portion 130 may be made of a flexible material.

In particular, the membrane portion 130 may be made of any one of silicone, polypropylene, and poly(methyl methacrylate) (PMMA).

Referring to FIG. 2, the plurality of

membranes

131, 132, 133, and 134 are the first membrane 131, the second membrane 132, the third membrane 133, and the fourth membrane 134.

The first membrane 131 is formed to connect the first fixing member 121 and the second fixing member 122.

The second membrane 132 is formed to connect the second fixing member 122 and the third fixing member 123.

The third membrane 133 is formed to connect the third fixing member 123 and the fourth fixing member 124.

The fourth membrane 134 is formed to connect the fourth fixing member 124 and the fifth fixing member 125.

The diameter of the membrane portion 130 in the unfolded state of the first to

fourth membranes

131, 132, 133, and 134 is 9 mm to 13 mm, and the first to

fourth membranes

131, 132, 133, and 134 are It is more preferable that the membrane portion 130 in the unfolded state is made of a transparent material.

The above reason is that when unfolding the first to fourth membranes (131, 132, 133, 134) at the location of the damaged lesion of the eye, the first to fifth fixing members (121, 122, 123, 124, 125) are Select a membrane portion 130 of an appropriate diameter to prevent the tip from damaging the inside of the eyeball.

Figure 3 (a) shows a view looking down from the top before the fixing part 120 and the membrane part 130 are unfolded.

The plurality of

membranes

131, 132, 133, and 134 described above may have a fan-shaped shape as shown in (b) of FIG. 3.

Additionally, the first to

fourth membranes

131, 132, 133, and 134 may have different shapes depending on the length of the multiple fixing members or the rotation angle of the multiple fixing members depending on the number of the multiple fixing members. .

As a result, when the first to fifth fixing

members

121, 122, 123, 124, and 125 are unfolded as shown in (b) of FIG. 3, the first to

fourth membranes

131, 132, 133, and 134 It forms a circle and adheres closely to the anterior segment of the eye.

The detachable portion 150 is detachable from the ends of the plurality of fixing

members

121, 122, 123, 124, and 125 and is fixed to the anterior segment of the eye.

Specifically, the detachable portion 150 is formed in a hook shape, and is attached to the first to fifth fixing members 121 facing the vertical support portion 111 among the first to fifth fixing

members

121, 122, 123, 124, and 125. , 122, 123, 124, 125) is detached from the end.

When the first to

fourth membranes

131, 132, 133, and 134 are in close contact with the anterior segment of the eye, the detachable portion 150 is fixed to the anterior segment of the eye through forceps held by the operator, thereby attaching the first to the

fourth membranes

131, 132, 133, and 134. The normal force provided by the to

fourth membranes

131, 132, 133, and 134 is maintained constant.

2. 제2 실시예: 전안부 안정화장치2. Second embodiment: anterior segment stabilization device

Hereinafter, an anterior segment stabilization device according to a second embodiment of the present invention will be described with reference to FIGS. 1, 4, and 5.

Referring to Figures 1 and 4, the anterior segment stabilizing device 100 according to the second embodiment of the present invention includes a support part 110, a fixing part 120, a membrane part 130, and a detachable part 150. And, as the plurality of fixing members (121, 122, 123, 124) are spread radially while located on the same plane, the plurality of membranes (131, 132, 133, 134) come into close contact with the anterior segment of the eye, thereby forming the anterior segment. If the pressure of the anterior segment is relatively low compared to the pressure of the posterior segment or the pressure of the anterior chamber is relatively low compared to the pressure of the posterior segment or posterior chamber, the vitreous pressure A normal force is provided to prevent this from increasing.

Referring to Figure 4, the support part 110 includes a vertical support part 111 and a horizontal support part 112.

The vertical support portion 111 is erected in the vertical direction.

Since the above-mentioned vertical support part 111 is the same as the vertical support part 111 described in the first embodiment, refer to the above for detailed description.

The horizontal support portion 112 is coupled to be perpendicular to the vertical support portion 111.

Specifically, the horizontal support portion 112 extends upward and downward from the center of the vertical support portion 111.

In addition, the horizontal support portion 112 may be an annular rotating body with a filled interior (e.g., cylindrical shape) or an annular rotating body with an empty interior (e.g., a pipe shape) like the vertical support portion 111. there is.

The horizontal support portion 111 and the vertical support portion 112 described above may be made of a flexible material.

The fixing part 120 is a fixing part including a plurality of fixing members extending outward from the vertical support part 111 in parallel while being spaced a predetermined distance apart from each other.

*The fixing part 120 includes a first fixing member 121, a second fixing member 122, a third fixing member 123, and a fourth fixing member 124.

The first fixing member 121 extends from the outer surface of the vertical support part 111 in one direction (left direction in FIG. 4) perpendicular to the vertical support part 111.

The second fixing member 122 is located between the first fixing member 121 and the horizontal support part 112 and is oriented in one direction (left direction in FIG. 4) perpendicular to the vertical support part 111 from the outer surface of the vertical support part 111. ) is extended.

The third fixing member 123 is located on the upper part of the horizontal support part 112 and extends from the outer surface of the vertical support part 111 in the other direction (to the right in FIG. 4) perpendicular to the vertical support part 111.

The fourth fixing member 124 is located on the upper part of the third fixing member 123 and extends from the outer surface of the vertical support part 111 in the other direction (to the right in FIG. 4) perpendicular to the vertical support part 111.

The above-described first to fourth fixing

members

121, 122, 123, and 124, the vertical support portion 111, and the horizontal support portion 112 are located on the same plane as shown in FIG. 4.

Additionally, the first and second fixing

members

121 and 122 are arranged to face the third and fourth fixing

members

123 and 124.

The membrane portion 130 connects a plurality of fixing

members

121, 122, 123, and 124, and among the plurality of fixing

members

121, 122, 123, and 124, the transverse support portion 112 and adjacent fixing

members

122 and 123 are connected to each other. ) and a plurality of membranes (131, 132, 133, 134) connecting the horizontal support portion 112, respectively.

Here, the plurality of

membranes

Additionally, the membrane portion 130 may be made of a flexible material.

Specifically, the membrane portion 130 may be made of any one of silicone, polypropylene, and poly(methyl methacrylate) (PMMA).

Referring to FIG. 4, the first membrane 131 connects the first fixing member 121 and the second fixing member 122.

The second membrane 132 connects the second fixing member 122 and the horizontal support portion 112.

The third membrane 133 connects the horizontal support portion 112 and the third fixing member 123.

The fourth membrane 134 connects the third fixing member 123 and the fourth fixing member 124.

The diameter of the membrane portion 130 in the unfolded state of the first to

fourth membranes

131, 132, 133, and 134 is 9 mm to 13 mm, and the first to

fourth membranes

The above reason is that when the first to fourth membranes (131, 132, 133, 134) are unfolded at the location of the damaged lesion in the eye, the first to fourth fixing members (121, 122, 123, 124) are damaged during the unfolding process. Select a membrane portion 130 of an appropriate diameter to prevent the tip from damaging the interior of the eye.

Figure 5(a) shows a view looking down from the top before the fixing part 120 and the membrane part 130 are unfolded.

The plurality of

membranes

131, 132, 133, and 134 described above may have a fan-shaped shape as shown in (b) of FIG. 5.

Additionally, the first to

fourth membranes

131, 132, 133, and 134 are fixed to a plurality of fixing members due to different lengths, a different length of the horizontal support portion 112, or a different number of fixing members. It can have different shapes depending on the rotation angle of the member.

As a result, when the first to fourth fixing

members

121, 122, 123, and 124 are unfolded as shown in (b) of FIG. 5, the first to

fourth membranes

131, 132, 133, and 134 are circular. It comes into close contact with the anterior segment of the eye.

members

121, 122, 123, 124, and 125 and is fixed to the anterior segment of the eye.

Specifically, the detachable portion 150 is formed in a hook shape, and is attached to the first to fourth fixing

members

121, 122 facing the vertical support portion 111 among the first to fourth fixing

members

121, 122, 123, and 124. , 123, 124) is detached from the end.

When the first to

fourth membranes

131, 132, 133, and 134. The normal force provided by the to

fourth membranes

131, 132, 133, and 134 is maintained constant.

3. 제3 실시예: 전안부 안정화장치3. Third embodiment: anterior segment stabilization device

Hereinafter, an anterior segment stabilization device according to a third embodiment of the present invention will be described with reference to FIGS. 1 and 6 to 8.

Figure 6 is a side view from one direction showing the anterior segment stabilization device according to the third embodiment of the present invention. Figure 7 is a side view from one direction showing the membrane portion provided in the anterior segment stabilization device according to the third embodiment of the present invention in an unfolded state.

Referring to Figures 1, 6, and 7, the anterior segment stabilizing device 100 according to the third embodiment of the present invention includes a support part 110, a fixing part 120, a membrane part 130, and a push part 140. ) and a detachable part 150, and the plurality of fixing

members

121, 122, 123 are exposed to the outside of the support part 110 by the push part 140 and spread radially, so that the membrane part 130 Due to close contact with the anterior segment of the eye, the pressure of the anterior segment is relatively lower than the pressure of the posterior segment, or the pressure of the anterior chamber is greater than the pressure of the posterior segment or posterior chamber. When relatively low compared to , a normal force is provided to prevent the vitreous pressure from increasing.

The support portion 110 is a vertical support portion 111 that may be made of a flexible material.

Since the vertical support portion 111 described above is the same as the vertical support portion 111 described in the first and second embodiments, refer to the above for detailed description.

The fixing part 120 includes a plurality of fixing

members

121, 122, and 123 located inside the support part 110.

Here, the plurality of fixing

members

121, 122, and 123 are the first fixing member 121, the second fixing member 122, and the third fixing member 123.

The first fixing member 121 is located inside the vertical support part 111 and is connected to the push part 140.

Specifically, the lower part of the first fixing member 121 is connected to the push unit 140 (for example, configured to be rotatable using a hinge, link, etc.).

In addition, after the first fixing member 121 is exposed to the outside, it is rotated counterclockwise on the second fixing member 122 and is attached to one side of the membrane portion 130 at an acute angle with the second fixing member 122. It is attached.

The second fixing member 122 is located inside the vertical support part 111 and is connected to the push part 140.

Specifically, the lower part of the second fixing member 122 is connected to the push unit 140 together with the lower part of the first fixing member 121 (for example, configured to be rotatable using a hinge, link, etc.).

In addition, the second fixing member 122 is exposed to the outside and then attached to one surface of the membrane portion 130 while positioned on the same straight line as the vertical support portion 111.

The third fixing member 123 is located inside the vertical support portion 111 and is connected to the push portion 140.

Specifically, the lower part of the third fixing member 123 is connected to the push part 140 together with the lower part of the first fixing member 121 and the second fixing member 122 (for example, using a hinge, link, etc.) configured to allow rotation).

In addition, the third fixing member 123 is exposed to the outside and then rotated clockwise on the second fixing member 122 and attached to one surface of the membrane portion 130 at an acute angle with the second fixing member 122. do.

Accordingly, the first to third fixing members 123 are connected to the push unit 140 and thus move together when the push unit 140 moves linearly forward or backward.

Specifically, when the push part 140 moves linearly forward, the first to third fixing

members

121, 122, and 123 are exposed to the outside of the vertical support part 111 and spread radially in the state shown in FIG. 6. (see Figure 7).

Meanwhile, as a modified example, the fixing part 120 may include only the first fixing member 121 and the second fixing member 122 as shown in (a) of FIG. 8.

On the other hand, as another modified example, the fixing part 120 includes a first fixing member 121, a second fixing member 122, a third fixing member 123, and a third fixing member 120, as shown in (b) of FIG. 8. It may include four fixing members 124 and a fifth fixing member 125.

In the above two modifications, the connection relationship between the fixing part 120 and the push part 140 and the coupling relationship between the fixing part 120 and the membrane part 130 are the same as described above.

The membrane portion 130 is attached to at least a portion of the plurality of fixing

members

121, 122, and 13.

In addition, the membrane portion 130 may be made of a flexible material as described above, and in particular, the membrane portion 130 may be made of silicone, polypropylene, and poly(methyl methacrylate (PMMA). )) It is preferable to consist of one of the following.

The membrane portion 130 is formed in a circular shape and is attached to the first to third fixing

members

121, 122, and 123.

The push part 140 is located inside the support part 110 so as to be connected to the ends of the plurality of fixing

members

121, 122, and 123 and reciprocates in a straight line.

Specifically, the push unit 140 is connected to a plurality of fixing

members

121, 122, and 123 and at least a portion of the push unit 140 is exposed to the outside of the support unit 110.

The operator moves the push part 140 forward or backward while holding the vertical support part 111 and the push part 140, respectively, to spread the plurality of fixing

members

121, 122, and 123 or to use the vertical support part 111. placed inside.

The detachable part 150 is detachable from the ends of the plurality of fixing

members

121, 122, and 123 and is fixed to the anterior segment of the eye.

The detachable part 150 for this may be formed in a hook shape as described above.

4. 제4 실시예: 전안부 안정화장치4. Fourth embodiment: anterior segment stabilization device

Hereinafter, an anterior segment stabilizing device according to a fourth embodiment of the present invention will be described with reference to FIGS. 1 and 9.

Referring to Figures 1 and 9, the anterior segment stabilizing device 100 according to the fourth embodiment of the present invention includes a support part 110, a fixing part 120, a membrane part 130, a push part 140, and a detachable part. It includes a portion 150, and as the fixing portion 120 is exposed to the outside of the support portion 110 by the push portion 140 and unfolds to form a circle, the membrane portion 130 is brought into close contact with the anterior segment of the eye, thereby protecting the eye. If the pressure in the anterior segment is relatively low compared to the pressure in the posterior segment, or if the pressure in the anterior chamber is relatively low compared to the pressure in the posterior segment or posterior chamber, it is advantageous. A normal force is provided to prevent body pressure from increasing.

Since the above-described vertical support portion 111 is the same as the vertical support portion 111 described in the first to third embodiments, refer to the above-mentioned description for a detailed description thereof.

The fixing part 120 is located inside the support part 110 and is made of an elastic material.

Specifically, referring to FIG. 9, when the fixing part 120 is exposed to the outside of the vertical support part 111 by the push part 140 that moves linearly forward, it is unfolded close to its circular shape.

Meanwhile, the fixing part 120 is inserted into the vertical support part 111 by the push part 140 that moves linearly backward.

The above-mentioned operation is possible because the fixing part 120 is made of an elastic material.

The membrane portion 130 is attached to the fixing portion 120.

Specifically, the membrane part 130 may be composed of a circular thin film, and as shown in FIG. 9, as it is attached to the fixing part 120, it is unfolded or folded by the operation of the fixing part 120.

The push part 140 is located inside the support part 110 so as to be connected to the fixing part 120 and reciprocates in a straight line.

Specifically, one side of the push part 140 is connected to the fixing part 120, and the other side of the push part 140 is exposed to the outside of the vertical support part 111.

The operator can straighten or fold the membrane portion 130 by moving the push portion 140 forward or backward while holding the other side of the push portion 140.

The detachable part 150 is detachable from the fixing part 120 and is fixed to the anterior segment of the eye.

That is, it is preferable that the detachable parts 150 are comprised of a plurality, and the plurality of detachable parts 150 are arranged to be spaced apart from each other.

The process of calculating the normal force (down force) will be described with reference to FIG. 10.

First of all, the prerequisites are that normal intraocular pressure is 10mmg to 21mmg, the cornea diameter is 12mm, and the radius of the cornea is 6mm.

Next, the necessary tensile load (F1) and normal force (F2) shown in FIG. 10 are proportional to the length, set as follows.

[Proportional]

Required tensile load (F1): Normal force (F2) = 6.083: 1mm

Through the above [proportionality equation], it can be confirmed that the normal force (F2) is approximately 6 times the required tensile load (F1).

For example, if the normal force (F2) is 1N (P=800Pa), the required tensile load (F1) is 6N.

Figure 11 is a graph showing stress according to strain as a result of a tensile test of a silicon thin film. Figure 12 is a table comparing the tensile and knot security properties of surgical sutures.

Referring to Figure 12, the maximum tensile load of silk is 10N, which is greater than the required tensile load (F1=6N), so the desired normal force (F2=1N) can be provided.

At this time, since the thickness of silk is 1 um, it is preferable that the thickness of the membrane portion 130 is 1 um or more.

In summary, if the diameter of the cornea included in the anterior segment is 12 mm, the average intraocular pressure is 10 mmHg to 21 mmHg, and the tensile load (F1) applied to the membrane portion 130 is 6N, the normal force (F2) is 1N.

Additionally, the thickness of the membrane portion is preferably 1 μm or more.

The description of the present invention described above is for illustrative purposes, and those skilled in the art will understand that the present invention can be easily modified into other specific forms without changing the technical idea or essential features of the present invention. will be. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. For example, each component described as unitary may be implemented in a distributed manner, and similarly, components described as distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the patent claims described below, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention.

[Explanation of symbols]

100: Anterior segment stabilization device

110: support part

111: Vertical support

112: horizontal support

120: fixing part

121: First fixing member

122: Second fixing member

123: Third fixing member

124: Fourth fixing member

125: Fifth fixing member

130: Membrane part

131: first membrane

132: second membrane

133: third membrane

134: fourth membrane

140: Push part

150: Removable part

Claims

support part;

a fixing part including a plurality of fixing members extending outwardly from the support part to be parallel and spaced apart from each other by a predetermined distance;

a membrane portion including a plurality of membranes connecting the plurality of fixing members to each other; and

It includes a detachable part that is detachable from the ends of the plurality of fixing members and is fixed to the anterior segment of the eye,

As the plurality of fixing members are positioned on the same plane and spread out radially, the plurality of membranes come into close contact with the anterior segment of the eye, thereby increasing the pressure of the anterior segment compared to the pressure of the posterior segment. When the pressure in the anterior chamber is relatively low compared to the pressure in the posterior chamber or posterior chamber, a normal force is provided to prevent the vitreous pressure from increasing in the anterior chamber. Stabilizer.
A support portion including a vertical support portion and a horizontal support portion coupled to be perpendicular to the vertical support portion;

a fixing part including a plurality of fixing members extending outwardly from the vertical support part to be parallel and spaced apart from each other by a predetermined distance;

a membrane portion that connects the plurality of fixing members and includes a plurality of membranes that connect the horizontal support portion to a fixing member adjacent to the horizontal support portion among the plurality of fixing members; and

It includes a detachable part that is detachable from the ends of the plurality of fixing members and is fixed to the anterior segment of the eye,

As the plurality of fixing members are positioned on the same plane and spread out radially, the plurality of membranes come into close contact with the anterior segment of the eye, thereby increasing the pressure of the anterior segment compared to the pressure of the posterior segment. When the pressure in the anterior chamber is relatively low compared to the pressure in the posterior chamber or posterior chamber, a normal force is provided to prevent the vitreous pressure from increasing in the anterior chamber. Stabilizer.
support part;

A fixing part including a plurality of fixing members located inside the support part;

A membrane portion attached to at least a portion of the plurality of fixing members;

A push part located inside the support part to be connected to the plurality of fixing members and reciprocating in a straight line; and

It includes a detachable part that is detachable from the ends of the plurality of fixing members and is fixed to the anterior segment of the eye,

As the plurality of fixing members are exposed to the outside of the support unit by the push unit and spread radially, the membrane unit comes into close contact with the anterior segment of the eye, thereby increasing the pressure of the anterior segment and the posterior segment. When the pressure is relatively low or the anterior chamber pressure is relatively low compared to the posterior or posterior chamber pressure, a normal force is provided to prevent the vitreous pressure from increasing. Anterior segment stabilization device.
support part;

A fixing part made of elastic material located inside the support part;

A membrane portion attached to the fixing portion;

A push part located inside the support part to be connected to the fixing part and reciprocating in a straight line;

It includes a detachable part that is detachable from the fixing part and fixed to the anterior segment of the eye,

As the fixing part is exposed to the outside of the support part by the push part and spreads to form a circle, the membrane part comes into close contact with the anterior segment of the eye, so that the pressure of the anterior segment is reduced by the pressure of the posterior segment. When the pressure in the anterior chamber is relatively low compared to the pressure in the posterior chamber or posterior chamber, a normal force is provided to prevent the vitreous pressure from increasing. Anbu stabilization device.
According to any one of claims 1 to 4,

An anterior segment stabilizing device, characterized in that the membrane portion can be made of a flexible material.
According to clause 5,

An anterior segment stabilizing device, wherein the membrane portion is made of any one of silicone, polypropylene, and poly(methyl methacrylate) (PMMA).
According to any one of claims 1 to 4,

An anterior segment stabilizing device, wherein when the diameter of the cornea included in the anterior segment is 12 mm, the average intraocular pressure is 10 mmHg to 21 mmHg, and the tensile load applied to the membrane unit is 6 N, the normal force is 1 N.
According to clause 7,

An anterior segment stabilizing device, characterized in that the thickness of the membrane portion is 1 um or more.
According to any one of claims 1 to 4,

An anterior segment stabilizing device, characterized in that the detachable portion is formed in a hook shape.
According to claim 1 or 2,

An anterior segment stabilization device, characterized in that the plurality of membranes have a fan-shaped shape.
According to claim 1,

The support part is a vertical support part standing up and down,

An anterior segment stabilizing device, characterized in that the vertical support portion can be made of a flexible material.
According to claim 11,

The plurality of fixing members include a first fixing member that extends outward from the outer surface of the support part to be perpendicular to the support part, and is located on an upper part of the first fixing member and extends outward from the outer surface of the support part to be perpendicular to the support part. A second fixing member extending to the top of the second fixing member, a third fixing member located on top of the second fixing member and extending outward from the outer surface of the support to be perpendicular to the support, and a third fixing member located on top of the third fixing member. A fourth fixing member extending outward from the outer surface of the support part to be perpendicular to the support part, and a fifth fixing member located on top of the fourth fixing member and extending outward from the outer surface of the support part to be perpendicular to the support part. ego,

An anterior segment stabilizing device, characterized in that the first to fifth fixing members and the vertical support portion are located on the same plane.
According to claim 12,

The plurality of membranes include a first membrane connecting the first fixing member and the second fixing member, a second membrane connecting the second fixing member and the third fixing member, the third fixing member and the fourth fixing member. An anterior segment stabilizing device, characterized in that the third membrane connects the fixing members and the fourth membrane connects the fourth fixing member and the fifth fixing member.
According to clause 2,

The support part,

Vertical supports erected in the vertical direction; and

It includes a horizontal support part extending upward and downward from the center of the vertical support part,

An anterior segment stabilizing device, characterized in that the horizontal support part and the vertical support part have a cross shape and are made of a flexible material.
According to claim 14,

The plurality of fixing members include a first fixing member extending in one direction from the outer surface of the vertical support part to be perpendicular to the vertical support part, and a first fixing member located between the first fixing member and the horizontal support part and extending from the outer surface of the vertical support part. A second fixing member extending in one direction perpendicular to the vertical support part, a third fixing member located on the upper part of the horizontal support part and extending in the other direction from the outer surface of the vertical support part to be perpendicular to the vertical support part, and the third fixing member A fourth fixing member located at the top of the member and extending from the outer surface of the vertical support in the other direction perpendicular to the vertical support,

An anterior segment stabilizing device, wherein the first to fourth fixing members, the vertical support portion, and the horizontal support portion are located on the same plane.
According to claim 15,

The plurality of membranes include a first membrane connecting the first fixing member and the second fixing member, a second membrane connecting the second fixing member and the horizontal support, and a second membrane connecting the horizontal support and the third fixing member. An anterior segment stabilizing device comprising a third membrane and a fourth membrane connecting the third fixing member and the fourth fixing member.
According to clause 3,

The support part is a vertical support part that can be made of a flexible material,

The plurality of fixing members include a first fixing member located inside the vertical support part and connected to the push part, a second fixing member located inside the vertical support part and connected to the push part, and an inside of the vertical support part. It is a third fixing member positioned and connected to the push unit,

An anterior eye segment stabilization device, characterized in that when the push unit moves linearly forward, the first to third fixing members are exposed to the outside of the vertical support unit and unfold radially.
According to claim 17,

An anterior segment stabilizing device, characterized in that the membrane portion is formed in a circular shape and is attached to the first to third fixing members.