KR102763565B1 - An anterior segment stabilization device - Google Patents

Abstract

The present invention provides an anterior segment stabilization device comprising: a support member; a fixing member including a plurality of fixing members extending outwardly from the support member while being spaced apart from each other by a predetermined distance and in parallel; a membrane member including a plurality of membranes respectively connecting the plurality of fixing members; and a detachable member detachably attached to ends of the plurality of fixing members and fixed to the anterior segment of the eye; wherein the plurality of membranes are adhered to the anterior segment of the eye as the plurality of fixing members are radially spread while being positioned on the same plane, thereby providing a vertical force to prevent an increase in vitreous pressure when the pressure in the anterior segment is relatively lower than the pressure in the posterior segment or when the pressure in the anterior chamber of the anterior segment is relatively lower than the pressure in the posterior or anterior chamber.

Description

{Anterior segment stabilization device}

The present invention relates to an anterior segment stabilization device, and more specifically, to an anterior segment stabilization device that stabilizes anterior segment structures by providing a vertical force to counteract the unstable state of anterior segment structures (iris, lens, etc.) and vitreous prolapse caused by the instability in cases where ophthalmic surgery such as vitrectomy and corneal transplantation or ocular damage such as corneal laceration occurs through a membrane portion that adheres closely to the anterior segment of the eyeball, when the pressure in the anterior segment is relatively lower than the pressure in the posterior segment or when the pressure in the anterior chamber of the anterior segment is relatively lower than the pressure in the posterior or anterior chamber.

In general, the goals of corneal transplantation are to achieve a clear central cornea and visual axis, minimize refractive errors, maintain the structure of the eye, relieve pain, and eliminate infections.

If the cornea is removed during surgery to leave the eye open (open sky), the pressure inside the eye can cause the lens and vitreous to prolapse, resulting in choroidal hemorrhage, which can lead to blindness during surgery.

Choroidal exudative hemorrhage has risk factors such as old age, myopia, glaucoma, inflammation, low intraocular pressure, and a history of previous trauma, and may occur when the aqueous humor leaks out and the intraocular pressure decreases rapidly when the accommodating cornea is cut in a circular shape.

To this end, intraocular pressure is controlled with medication or physical pressure before surgery, and during surgery, a circular scleral fixation ring is used to support the cornea to prevent the lens or vitreous from being pushed forward due to scleral depression that may occur when the eye is opened.

However, the methods according to the above-mentioned conventional techniques cannot fundamentally prevent the vitreous and crystalline lens from prolapse in the posterior region, and the corneal ring has the disadvantage of limiting the surgical scope by narrowing the surgical site and causing astigmatism.

Accordingly, there is a need to develop a technology to prevent the vitreous body from prolapsed toward the anterior segment and to keep it in the posterior segment.

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

The purpose of the present invention to solve the above problems is to provide an anterior segment stabilization device that provides a down force against the vitreous pressure to prevent the vitreous pressure from increasing when the membrane attached to the fixing portion is spread and adhered to the anterior segment of the eye due to the movement of the fixing portion, when the pressure in the anterior segment is relatively lower than the pressure in the posterior segment or when the pressure in the anterior chamber of the anterior segment is relatively lower than the pressure in the posterior or anterior chamber of the anterior segment, thereby preventing the patient's ocular lesion from getting worse and supporting the safe and effective progress of ocular surgery.

In addition, the purpose of the present invention to solve the above problems is to provide an anterior segment stabilization device that prevents an increase in vitreous pressure by spreading a membrane portion over a lesioned location of the eye in an emergency situation where the pressure in the anterior segment is relatively lower than that in the posterior segment due to eye damage or where the pressure in the anterior chamber is relatively lower than that in the posterior or anterior chamber.

The technical problems to be achieved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

In order to achieve the above object, the present invention provides an anterior segment stabilization device comprising: a fixing member including a plurality of fixing members extending outwardly from the support member while being spaced apart from each other by a predetermined distance and being parallel; a membrane member including a plurality of membranes respectively connecting the plurality of fixing members; and a detachable member detachably attached to ends of the plurality of fixing members and fixed to the anterior segment of the eye; wherein, when the plurality of fixing members are 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 when the pressure of the anterior segment is relatively lower than the pressure of the posterior segment or when the pressure in the anterior chamber of the anterior segment is relatively lower than the pressure in the posterior or anterior chamber, the device provides a vertical force for preventing an increase in vitreous pressure.

In addition, the composition of the present invention for achieving the above purpose comprises: a support part including a vertical support part and a horizontal support part connected perpendicularly to the vertical support part; a fixing part including a plurality of fixing members extending outwardly from the vertical support part while being spaced apart from each other by a predetermined distance and in parallel; a membrane part including a plurality of membranes which respectively connect the plurality of fixing members and respectively connect the horizontal support part and a fixing member adjacent to the horizontal support part among the plurality of fixing members; And a detachable portion detachably attached to the ends of the plurality of fixing members and fixed to the anterior segment of the eye; wherein, when the plurality of fixing members are positioned on the same plane and spread radially, the plurality of membranes are in close contact with the anterior segment of the eye, so that when the pressure of the anterior segment is relatively lower than the pressure of the posterior segment or when the pressure in the anterior chamber of the anterior segment is relatively lower than the pressure in the posterior or anterior chamber, the vertical force is provided to prevent the vitreous pressure from increasing.

In addition, the present invention for achieving the above purpose comprises a configuration including: a support member; a fixing member including a plurality of fixing members positioned inside the support member; a membrane member attached to at least a portion of the plurality of fixing members; a push member positioned inside the support member so as to be connected to the plurality of fixing members and performing a linear reciprocating motion; and a detachable member detachably attached to an end of the plurality of fixing members and fixed to the anterior segment of the eye; and, when the plurality of fixing members are exposed to the outside of the support member and spread radially by the push member, the membrane member is in close contact with the anterior segment of the eye, and when the pressure of the anterior segment is relatively lower than the pressure of the posterior segment or when the pressure of the anterior chamber of the anterior segment is relatively lower than the pressure of the posterior segment or the pressure of the posterior chamber of the anterior segment, the vertical force is provided to prevent an increase in vitreous pressure.

In addition, the present invention for achieving the above purpose comprises a configuration including a support portion; a fixing portion made of an elastic material located inside the support portion; a membrane portion attached to the fixing portion; a push portion located inside the support portion so as to be connected to the fixing portion and performing a linear reciprocating motion; and a detachable portion detachably attached to the fixing portion and fixed to the anterior segment of the eyeball; and when the fixing portion is exposed to the outside of the support portion by the push portion and spreads to form a circle, the membrane portion is in close contact with the anterior segment of the eyeball, so that when the pressure of the anterior segment is relatively lower than the pressure of the posterior segment or when the pressure of the anterior chamber of the anterior segment is relatively lower than the pressure of the posterior segment or the pressure of the posterior chamber of the anterior segment, a vertical force is provided to prevent an increase in vitreous pressure.

In an embodiment of the present invention, the membrane portion may be characterized in that it can be made of a flexible material.

In an embodiment of the present invention, the membrane portion may be characterized by being made of any one of silicone, polypropylene, and polymethyl 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 portion is 6 N, the normal force may be 1 N.

In an embodiment of the present invention, the thickness of the membrane portion may be characterized as being 1 um or more.

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

In an embodiment of the present invention, the plurality of membranes may be characterized as having a fan-shaped shape.

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

In an embodiment of the present invention, the plurality of fixing members may include a first fixing member extending outwardly from an outer surface of the support portion so as to be perpendicular to the support portion, a second fixing member positioned above the first fixing member and extending outwardly from an outer surface of the support portion so as to be perpendicular to the support portion, a third fixing member positioned above the second fixing member and extending outwardly from an outer surface of the support portion so as to be perpendicular to the support portion, a fourth fixing member positioned above the third fixing member and extending outwardly from an outer surface of the support portion so as to be perpendicular to the support portion, and a fifth fixing member positioned above the fourth fixing member and extending outwardly from an outer surface of the support portion so as to be perpendicular to the support portion, and the first to fifth fixing members and the vertical support portion may be positioned on the same plane.

In an embodiment of the present invention, the plurality of membranes may be characterized by including 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, 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 part may include a vertical support part standing upright in the vertical direction; and a horizontal support part extending upward and downward from the center of the vertical support part; and the horizontal support part and the vertical support part may be characterized in that they have a cross shape and can be made of a flexible material.

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

In an embodiment of the present invention, the plurality of membranes may be characterized by including 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 member, a third membrane connecting the horizontal support member and 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 member may be a vertical support member made of a flexible material, and the plurality of fixing members may include a first fixing member positioned inside the vertical support member and connected to the push member, a second fixing member positioned inside the vertical support member and connected to the push member, and a third fixing member positioned inside the vertical support member and connected to the push member, and when the push member moves linearly forward, the first to third fixing members may be characterized in that they are exposed to the outside of the vertical support member and spread radially.

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, when the membrane attached to the fixing portion is spread by the movement of the fixing portion and comes into close contact with the anterior segment of the eye, when the pressure in the anterior segment is relatively lower than the pressure in the posterior segment or when the pressure in the anterior chamber of the anterior segment is relatively lower than the pressure in the posterior or anterior chamber of the anterior segment, the vitreous pressure is prevented from increasing by providing a vertical force against the vitreous pressure, thereby preventing the patient's ocular lesion from getting worse and supporting the safe and effective progress of surgery related to the eye, thereby improving the surgical effect.

In addition, the effect of the present invention according to the above configuration is that in an emergency situation where the eye is damaged and the pressure in the anterior segment is relatively lower than the pressure in the posterior segment or the pressure in the anterior chamber is relatively lower than the pressure in the posterior or anterior chamber, the membrane portion is spread over the lesioned location of the eye to prevent an increase in the vitreous pressure, thereby enabling a quick 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 detailed description of the present invention or the composition of the invention described in the claims.

FIG. 1 is a block diagram showing an anterior segment stabilization device according to one embodiment of the present invention.
FIG. 2 is a side view in one direction showing an anterior segment stabilization device according to a first embodiment of the present invention.
Figures 3 (a) and (b) are plan views in one direction showing the membrane part provided in the anterior segment stabilization device according to the first embodiment of the present invention before and after being unfolded.
FIG. 4 is a side view in one direction showing an anterior segment stabilization device according to a second embodiment of the present invention.
Figures 5 (a) and (b) are plan views in one direction showing the membrane part of the anterior segment stabilization device according to the second embodiment of the present invention before and after being unfolded.
FIG. 6 is a side view in one direction showing an anterior segment stabilization device according to a third embodiment of the present invention.
FIG. 7 is a side view in one direction showing the membrane part of the anterior segment stabilization device according to the third embodiment of the present invention in an unfolded state.
FIGS. 8(a) and 8(b) are side views in one direction showing that the number of fixing members provided in the anterior segment stabilization device according to the third embodiment of the present invention is applied differently.
FIG. 9 is a plan view in one direction showing an anterior segment stabilization device according to a fourth embodiment of the present invention.
FIG. 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 characteristics of surgical sutures.

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

Throughout the specification, when a part is said to be "connected (connected, contacted, joined)" to another part, this includes not only the case where it is "directly connected" but also the case where it is "indirectly connected" with another member in between. Also, when a part is said to "include" a certain component, this does not mean that other components are excluded, unless otherwise specifically stated, but that other components can be included.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. As used herein, the terms "comprises" or "has" and the like are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but should be understood to not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

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

The present invention described below is a technique applicable when the pressure in the anterior segment is relatively lower than the pressure in the posterior segment or when the pressure in the anterior chamber is relatively lower than the pressure in the posterior or anterior chamber.

First, the present invention is utilized in surgery related to the eye of a patient when the pressure in the anterior segment is relatively lower than that in the posterior segment or when the pressure in the anterior chamber is relatively lower than that in the posterior or anterior chamber, and is applied to penetrating keratoplasty as an example.

Next, in an emergency situation where the pressure in the anterior segment is relatively lower than that in the posterior segment due to eye damage, or where the pressure in the anterior chamber is relatively lower than that in the posterior or anterior chamber, the membrane portion of the present invention can be temporarily spread over the site of eye damage to prevent further increase in vitreous pressure.

1. First embodiment: Anterior segment stabilization device

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

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

Specifically, FIG. 1 illustrates all components of an anterior segment stabilization device according to the first to fourth embodiments of the present invention at once, and is not limited to any one embodiment.

FIG. 2 is a side view in one direction showing an anterior segment stabilization device according to a first embodiment of the present invention.

Referring to FIGS. 1 and 2, an anterior segment stabilization device (100) according to one embodiment of the present invention includes a support member (110), a fixing member (120), a membrane member (130), and a detachable member (150), and as a plurality of fixing members (121, 122, 123, 124, 125) are positioned on the same plane and spread out radially, a plurality of membranes (131, 132, 133, 134) are in close contact with the anterior segment of the eyeball, thereby providing a down force to prevent an increase in vitreous pressure when the pressure in the anterior segment is relatively lower than the pressure in the posterior segment or when the pressure in the anterior chamber of the anterior segment is relatively lower than the pressure in the posterior or anterior chamber.

Referring to Figure 2, the support member (110) is a vertical support member (111) that stands upright in the vertical direction.

The vertical support member (111) may be made of a flexible material.

Specifically, the vertical support member (110) may be an annular body of rotation with a filled interior (e.g., a cylindrical shape) or an annular body of rotation with a hollow interior (e.g., a pipe shape).

In addition, the vertical support member (110) illustrated in FIG. 2 is exaggerated as being formed long in the vertical direction, but in reality, the length of the vertical support member (110) can be formed in micrometer or nanometer units.

The fixed part (120) may be made of a flexible material.

In addition, the fixed member (120) includes a plurality of fixed members (121, 122, 123, 124, 125) that extend outward from the support member (110) while being spaced apart from each other by a predetermined distance and in parallel.

Here, the plurality of fixing members (121, 122, 123, 124, 125) are a first fixing member (121), a second fixing member (122), a third fixing member (123), a fourth fixing member (124), and a fifth fixing member (125).

The first fixed member (121) extends outward from the outer surface of the support member (110) so as to be perpendicular to the support member (110).

Specifically, the first fixed member (121) extends outward (=in the other direction) from the outer surface of the vertical support member (111) so as to be perpendicular to the vertical support member (111).

The second fixed member (122) is positioned above the first fixed member (121) and extends outward from the outer surface of the support member (110) so as to be perpendicular to the support member (110).

Specifically, the second fixed member (122) is positioned above the first fixed member (121) and extends outward (= in the other direction) from the outer surface of the vertical support member (111) so as to be perpendicular to the vertical support member (111).

The third fixed member (123) is positioned above the second fixed member (122) and extends outward from the outer surface of the support member (110) so as to be perpendicular to the support member (110).

Specifically, the third fixed member (123) is positioned above the second fixed member (122) and extends outward (=in the other direction) from the outer surface of the vertical support member (111) so as to be perpendicular to the vertical support member (111).

The fourth fixed member (124) is positioned above the third fixed member (123) and extends outward from the outer surface of the support member (110) so as to be perpendicular to the support member (110).

Specifically, the fourth fixed member (124) is positioned above the third fixed member (123) and extends outward (=in the other direction) from the outer surface of the vertical support member (111) so as to be perpendicular to the vertical support member (111).

The fifth fixed member (125) is positioned above the fourth fixed member (124) and extends outward from the outer surface of the support member (110) so as to be perpendicular to the support member (110).

Specifically, the fifth fixed member (125) is positioned above the fourth fixed member (124) and extends outward (=in the other direction) from the outer surface of the vertical support member (111) so as to be perpendicular to the vertical support member (111).

That is, the first to fifth fixed members (121, 122, 123, 124, 125) are formed to extend in the same direction.

The first to fifth fixed members (121, 122, 123, 124, 125) and the vertical support member (111) mentioned above are located on the same plane as shown in FIG. 2.

The membrane portion (130) includes a plurality of membranes (131, 132, 133, 134) that respectively connect a plurality of fixed members (121, 122, 123, 124, 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 polymethyl methacrylate (PMMA).

Referring to FIG. 2, the above-described plurality of membranes (131, 132, 133, 134) are a first membrane (131), a second membrane (132), a third membrane (133), and a 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 which the first to fourth membranes (131, 132, 133, 134) are spread out is 9 mm to 13 mm, and it is more preferable that the membrane portion (130) in which the first to fourth membranes (131, 132, 133, 134) are spread out is made of a transparent material.

The above reason is that when the first to fourth membranes (131, 132, 133, 134) are spread out at a damaged lesion location of the eyeball, a membrane part (130) of an appropriate diameter is selected to prevent the ends of the first to fifth fixing members (121, 122, 123, 124, 125) from damaging the inside of the eyeball during the spreading process.

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

Figure 3 (a) shows a top view of the fixed portion (120) and membrane portion (130) before they are unfolded.

The above-described plurality of membranes (131, 132, 133, 134) may have a fan-shaped shape as illustrated in (b) of FIG. 3.

Additionally, the first to fourth membranes (131, 132, 133, 134) may have different shapes depending on the lengths of the plurality of fixing members being different from each other or the rotation angles of the plurality of fixing members depending on the number of the plurality of fixing members.

As a result, when the first to fifth fixed members (121, 122, 123, 124, 125) are spread out as shown in (b) of FIG. 3, the first to fourth membranes (131, 132, 133, 134) form a circle and are in close contact with the anterior part of the eyeball.

The detachable part (150) is detachable from the ends of a number of fixing members (121, 122, 123, 124, 125) and is fixed to the anterior part of the eye.

Specifically, the detachable portion (150) is formed in a hook shape and is detached from the end of the first to fifth fixing members (121, 122, 123, 124, 125) facing the vertical support member (111) among the first to fifth fixing members (121, 122, 123, 124, 125).

The above-mentioned detachable portion (150) maintains the vertical force provided by the first to fourth membranes (131, 132, 133, 134) constant by being fixed to the anterior segment of the eyeball through forceps held by the surgeon when the first to fourth membranes (131, 132, 133, 134) are in close contact with the anterior segment of the eyeball.

2. Second embodiment: Anterior segment stabilization device

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

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

Referring to FIGS. 1 and 4, an anterior segment stabilization device (100) according to a second embodiment of the present invention includes a support portion (110), a fixing portion (120), a membrane portion (130), and a detachable portion (150), and as a plurality of fixing members (121, 122, 123, 124) are positioned on the same plane and spread out radially, a plurality of membranes (131, 132, 133, 134) are brought into close contact with the anterior segment of the eyeball, thereby providing a vertical force to prevent an increase in vitreous pressure when the pressure in the anterior segment is relatively lower than the pressure in the posterior segment or when the pressure in the anterior chamber of the anterior segment is relatively lower than the pressure in the posterior or anterior chamber.

Referring to FIG. 4, the support member (110) includes a vertical support member (111) and a horizontal support member (112).

The vertical support member (111) stands upright in the vertical direction.

The above-described vertical support member (111) is identical to the vertical support member (111) described in the first embodiment, so for a detailed description thereof, refer to the above.

The horizontal support member (112) is connected perpendicularly to the vertical support member (111).

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

Additionally, the horizontal support member (112) may be an annular body of rotation (e.g., cylindrical) with a filled interior like the vertical support member (111) or an annular body of rotation (e.g., pipe-shaped) with a hollow interior.

The aforementioned horizontal support member (111) and vertical support member (112) can be made of a flexible material.

The fixed part (120) is a fixed part including a plurality of fixed members extending outwardly from the vertical support part (111) while being spaced apart from each other by a predetermined distance and being parallel to each other.

The fixed member (120) includes a first fixed member (121), a second fixed member (122), a third fixed member (123), and a fourth fixed member (124).

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

The second fixed member (122) is positioned between the first fixed member (121) and the horizontal support member (112) and extends in one direction (left direction in FIG. 4) perpendicular to the vertical support member (111) from the outer surface of the vertical support member (111).

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

The fourth fixed member (124) is positioned above the third fixed member (123) and extends in the other direction (right direction in FIG. 4) perpendicular to the vertical support member (111) from the outer surface of the vertical support member (111).

The first to fourth fixed members (121, 122, 123, 124), vertical support member (111) and horizontal support member (112) described above are located on the same plane as shown in FIG. 4.

Additionally, the first and second fixing members (121, 122) are arranged to face the third and fourth fixing members (123, 124).

The membrane part (130) includes a plurality of membranes (131, 132, 133, 134) that respectively connect a plurality of fixing members (121, 122, 123, 124) and connect a fixing member (122, 123) adjacent to a horizontal support member (112) among the plurality of fixing members (121, 122, 123, 124) to the horizontal support member (112).

Here, the plurality of membranes (131, 132, 133, 134) are a first membrane (131), a second membrane (132), a third membrane (133), and a fourth membrane (134).

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 polymethyl 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 transverse support member (112).

The third membrane (133) connects the cross support member (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 which the first to fourth membranes (131, 132, 133, 134) are spread out is 9 mm to 13 mm, and it is more preferable that the membrane portion (130) in which the first to fourth membranes (131, 132, 133, 134) are spread out is made of a transparent material.

The above reason is that when the first to fourth membranes (131, 132, 133, 134) are spread out at a damaged lesion location of the eyeball, a membrane portion (130) of an appropriate diameter is selected to prevent the ends of the first to fourth fixing members (121, 122, 123, 124) from damaging the inside of the eyeball during the spreading process.

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

Figure 5 (a) shows a view from above before the fixed part (120) and membrane part (130) are unfolded.

The above-described plurality of membranes (131, 132, 133, 134) may have a fan-shaped shape as illustrated in (b) of FIG. 5.

Additionally, the first to fourth membranes (131, 132, 133, 134) may have different shapes depending on the rotation angle of the plurality of fixing members due to different lengths of the plurality of fixing members, different lengths of the cross-support members (112), or different numbers of the plurality of fixing members.

As a result, when the first to fourth fixed members (121, 122, 123, 124) are spread out as shown in (b) of FIG. 5, the first to fourth membranes (131, 132, 133, 134) form a circle and are in close contact with the anterior part of the eyeball.

The detachable part (150) is detachable from the ends of a number of fixing members (121, 122, 123, 124, 125) and is fixed to the anterior part of the eye.

Specifically, the detachable portion (150) is formed in a hook shape and is detached from the end of the first to fourth fixing members (121, 122, 123, 124) facing the vertical support member (111) among the first to fourth fixing members (121, 122, 123, 124).

The above-mentioned detachable portion (150) maintains the vertical force provided by the first to fourth membranes (131, 132, 133, 134) constant by being fixed to the anterior segment of the eyeball through forceps held by the surgeon when the first to fourth membranes (131, 132, 133, 134) are in close contact with the anterior segment of the eyeball.

3. Third embodiment: Anterior segment stabilization device

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

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

Referring to FIGS. 1, 6, and 7, an anterior segment stabilization device (100) according to a third embodiment of the present invention includes a support portion (110), a fixing portion (120), a membrane portion (130), a push portion (140), and a detachable portion (150). As a plurality of fixing members (121, 122, 123) are exposed to the outside of the support portion (110) by the push portion (140) and spread radially, the membrane portion (130) is brought into close contact with the anterior segment of the eyeball, thereby providing a vertical force to prevent an increase in vitreous pressure when the pressure in the anterior segment is relatively lower than the pressure in the posterior segment or when the pressure in the anterior chamber of the anterior segment is relatively lower than the pressure in the posterior or anterior chamber.

The support member (110) is a vertical support member (111) that can be made of a flexible material.

The above-described vertical support member (111) is identical to the vertical support member (111) described in the first and second embodiments, so for a detailed description thereof, refer to the above.

The fixed part (120) includes a plurality of fixed members (121, 122, 123) located inside the support part (110).

Here, the plurality of fixed members (121, 122, 123) are a first fixed member (121), a second fixed member (122), and a third fixed member (123).

The first fixed member (121) is located inside the vertical support member (111) and connected to the push member (140).

Specifically, the lower part of the first fixed member (121) is connected to the push member (140) (e.g., configured to be rotatable using a hinge, link, etc.).

In addition, the first fixing member (121) is exposed to the outside and then rotated counterclockwise from the second fixing member (122) to form an acute angle with the second fixing member (122) and is attached to one surface of the membrane portion (130).

The second fixed member (122) is located inside the vertical support member (111) and connected to the push member (140).

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

In addition, the second fixed member (122) is attached to one surface of the membrane member (130) while positioned in the same straight line as the vertical support member (111) after being exposed to the outside.

The third fixed member (123) is located inside the vertical support member (111) and connected to the push member (140).

Specifically, the lower part of the third fixed member (123) is connected to the push member (140) together with the lower part of the first fixed member (121) and the second fixed member (122) (e.g., configured to be rotatable using a hinge, link, etc.).

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

Accordingly, the first to third fixed members (123) are connected to the push member (140) and move together when the push member (140) moves linearly forward or backward.

Specifically, when the push member (140) moves linearly forward, the first to third fixing members (121, 122, 123) are exposed to the outside of the vertical support member (111) in the state shown in FIG. 6 and spread out radially (see FIG. 7).

FIGS. 8(a) and 8(b) are side views in one direction showing that the number of fixing members provided in the anterior segment stabilization device according to the third embodiment of the present invention is applied differently.

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

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

In the above two modified examples, the connection relationship between the fixed part (120) and the push part (140) and the bonding relationship between the fixed 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 a plurality of fixing members (121, 122, 13).

In addition, the membrane portion (130) may be made of a flexible material as described above, and in particular, the membrane portion (130) is preferably made of one of silicone, polypropylene, and polymethyl methacrylate (PMMA).

The above-mentioned membrane portion (130) is formed in a circular shape and attached to the first to third fixing members (121, 122, 123).

The push member (140) is positioned inside the support member (110) so as to be connected to the ends of a number of fixed members (121, 122, 123) and performs a linear reciprocating motion.

Specifically, the push member (140) is connected to a number of fixed members (121, 122, 123) and at least a portion of the push member is exposed to the outside of the support member (110).

The operator moves the push unit (140) forward or backward while holding the vertical support unit (111) and the push unit (140), thereby unfolding a number of fixing members (121, 122, 123) or positioning them inside the vertical support unit (111).

The detachable part (150) is detachable from the ends of a number of fixing members (121, 122, 123) and is fixed to the anterior part of the eye.

The detachable portion (150) for this purpose can be formed in a hook shape as described above.

4. Fourth embodiment: Anterior segment stabilization device

Hereinafter, a frontal stabilization device according to a fourth embodiment of the present invention will be described with reference to FIGS. 1 and 9.

FIG. 9 is a plan view in one direction showing an anterior segment stabilization device according to a fourth embodiment of the present invention.

Referring to FIGS. 1 and 9, an anterior segment stabilization device (100) according to a fourth embodiment of the present invention includes a support portion (110), a fixing portion (120), a membrane portion (130), a push portion (140), and a detachable portion (150). As the fixing portion (120) is exposed to the outside of the support portion (110) by the push portion (140) and spreads to form a circle, the membrane portion (130) is brought into close contact with the anterior segment of the eyeball, thereby providing a vertical force to prevent an increase in vitreous pressure when the pressure in the anterior segment is relatively lower than the pressure in the posterior segment or when the pressure in the anterior chamber of the anterior segment is relatively lower than the pressure in the posterior or anterior chamber.

The support member (110) is a vertical support member (111) that can be made of a flexible material.

The above-described vertical support member (111) is identical to the vertical support member (111) described in the first to third embodiments, so for a detailed description thereof, refer to the above.

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

Specifically, referring to Fig. 9, the fixed part (120) is spread out to a shape close to a circle when exposed to the outside of the vertical support part (111) by the push part (140) moving linearly forward.

Meanwhile, the fixed part (120) is inserted into the interior of the vertical support part (111) by the push part (140) that moves linearly backward.

The commercial movement is possible because the fixed part (120) is made of elastic material.

The membrane portion (130) is attached to the fixed portion (120).

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

The push part (140) is located inside the support part (110) so as to be connected to the fixed part (120) and performs a linear reciprocating motion.

Specifically, one side of the push part (140) is connected to the fixed 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 unfold or fold the membrane portion (130) by moving the push portion (140) forward or backward in a linear manner while holding the other side of the push portion (140).

The detachable part (150) is detachable on the fixed part (120) and is fixed to the anterior part of the eyeball.

That is, it is preferable that the detachable portion (150) be composed of multiple pieces, and that the multiple detachable portions (150) be arranged so as to be spaced apart from each other.

FIG. 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.

The process of calculating the down force is explained with reference to Fig. 10.

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

Next, the required tensile load (F1) and vertical force (F2) shown in Fig. 10 are set as the proportional expression for the length as follows.

[Proportional]

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

Through the [proportional formula] above, we can confirm that the normal force (F2) is approximately 6 times the required tensile load (F1).

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

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 characteristics of surgical sutures.

Referring to Fig. 12, the maximum tensile load of the 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 the silk is 1 um, it is preferable that the thickness of the membrane portion (130) be formed to be 1 um or more.

In summary, 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 (F1) applied to the membrane portion (130) is 6 N, the normal force (F2) is 1 N.

Additionally, it is desirable that the thickness of the membrane portion be 1 um or more.

The above description of the present invention 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 characteristics of the present invention. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single component may be implemented in a distributed manner, and likewise, components described as distributed may be implemented in a combined form.

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

100: Anterior segment stabilization device
110: Support
111: Vertical support
112: Cross support
120: Fixed part
121: 1st fixed member
122: Second fixed member
123: Third fixed member
124: 4th fixed member
125: Fifth fixed member
130: Membrane section
131: 1st membrane
132: Second membrane
133: Third membrane
134: 4th membrane
140: Pushbu
150: Detachable part

Claims (18)

Support;
A fixing member including a plurality of fixing members extending outwardly from the support member while being spaced apart from each other by a predetermined distance and being parallel to each other;
A membrane portion including a plurality of membranes each connecting the plurality of fixed members; and
A detachable member is included that is detachable from the end of the plurality of fixing members and is fixed to the anterior part of the eyeball;
An anterior segment stabilization device characterized in that when the plurality of fixing members are positioned on the same plane and spread radially, the plurality of membranes are brought into close contact with the anterior segment of the eyeball, so that the pressure in the anterior segment is relatively lower than the pressure in the posterior segment or when the pressure in the anterior chamber of the anterior segment is relatively lower than the pressure in the posterior segment or the posterior chamber of the anterior segment, a vertical force is provided to prevent an increase in vitreous pressure.
A support member including a vertical support member and a horizontal support member connected perpendicularly to the vertical support member;
A fixing member including a plurality of fixing members extending outwardly from the vertical support member while being spaced apart from each other by a predetermined distance and being parallel to each other;
A membrane part including a plurality of membranes each connecting the plurality of fixing members and each connecting the fixing member adjacent to the horizontal support part among the plurality of fixing members to the horizontal support part; and
A detachable member is included that is detachable from the end of the plurality of fixing members and is fixed to the anterior part of the eyeball;
An anterior segment stabilization device characterized in that when the plurality of fixing members are positioned on the same plane and spread radially, the plurality of membranes are brought into close contact with the anterior segment of the eyeball, so that the pressure in the anterior segment is relatively lower than the pressure in the posterior segment or when the pressure in the anterior chamber of the anterior segment is relatively lower than the pressure in the posterior segment or the posterior chamber of the anterior segment, a vertical force is provided to prevent an increase in vitreous pressure.
Support;
A fixing member including a plurality of fixing members positioned inside the support member;
A membrane portion attached to at least a portion of the above plurality of fixed members;
A push member positioned inside the support member to be connected to the plurality of fixed members and perform a linear reciprocating motion; and
A detachable member is included that is detachable from the end of the plurality of fixing members and is fixed to the anterior part of the eyeball;
An anterior segment stabilization device characterized in that when the plurality of fixing members are exposed to the outside of the support member and spread radially by the push member, the membrane member is brought into close contact with the anterior segment of the eyeball, so that when the pressure in the anterior segment is relatively lower than the pressure in the posterior segment or when the pressure in the anterior chamber of the anterior segment is relatively lower than the pressure in the posterior segment or the posterior chamber of the anterior segment, a vertical force is provided to prevent an increase in vitreous pressure.
Support;
A fixed part made of elastic material located inside the above support part;
A membrane portion attached to the above fixed portion;
A push part positioned inside the support part so as to be connected to the above-mentioned fixed part and perform a linear reciprocating motion;
A detachable part is included that is detachable on the above-mentioned fixed part and is fixed to the anterior part of the eyeball;
An anterior segment stabilization device characterized in that when the fixing portion is exposed to the outside of the support portion by the pushing portion and spread to form a circle, the membrane portion is brought into close contact with the anterior segment of the eyeball, so that when the pressure in the anterior segment is relatively lower than the pressure in the posterior segment or when the pressure in the anterior chamber of the anterior segment is relatively lower than the pressure in the posterior segment or the posterior chamber of the anterior segment, a vertical force is provided to prevent an increase in vitreous pressure.
In any one of claims 1 to 4,
An anterior segment stabilization device characterized in that the above membrane portion can be made of a flexible material.
In clause 5,
An anterior segment stabilization device characterized in that the membrane portion is made of any one of silicone, polypropylene, and polymethyl methacrylate (PMMA).
In any one of claims 1 to 4,
An anterior segment stabilization device characterized in that 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 portion is 6 N, the normal force is 1 N.
In Article 7,
An anterior segment stabilization device characterized in that the thickness of the membrane portion is 1 um or more.
In any one of claims 1 to 4,
An anterior segment stabilization device characterized in that the above detachable portion is formed in a hook shape.
In claim 1 or 2,
An anterior segment stabilization device characterized in that the above plurality of membranes have a fan-shaped shape.
In the first paragraph,
The above support member is a vertical support member standing upright in the vertical direction,
An anterior segment stabilization device characterized in that the above vertical support member can be made of a flexible material.
In Article 11,
The above-mentioned plurality of fixing members are a first fixing member extending outwardly from an outer surface of the support part so as to be perpendicular to the support part, a second fixing member positioned above the first fixing member and extending outwardly from an outer surface of the support part so as to be perpendicular to the support part, a third fixing member positioned above the second fixing member and extending outwardly from an outer surface of the support part so as to be perpendicular to the support part, a fourth fixing member positioned above the third fixing member and extending outwardly from an outer surface of the support part so as to be perpendicular to the support part, and a fifth fixing member positioned above the fourth fixing member and extending outwardly from an outer surface of the support part so as to be perpendicular to the support part.
An anterior segment stabilization device, characterized in that the first to fifth fixing members and the vertical support member are located on the same plane.
In Article 12,
An anterior segment stabilization device, characterized in that 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, 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 the second paragraph,
The above support part,
A vertical support member standing upright; and
Including a horizontal support member extending upward and downward from the center of the vertical support member;
An anterior segment stabilization device characterized in that the horizontal support member and the vertical support member have a cross shape and can be made of a flexible material.
In Article 14,
The above-mentioned plurality of fixing members are a first fixing member extending in one direction perpendicular to the vertical support from the outer surface of the vertical support, a second fixing member positioned between the first fixing member and the horizontal support and extending in one direction perpendicular to the vertical support from the outer surface of the vertical support, a third fixing member positioned above the horizontal support and extending in the other direction perpendicular to the vertical support from the outer surface of the vertical support, and a fourth fixing member positioned above the third fixing member and extending in the other direction perpendicular to the vertical support from the outer surface of the vertical support.
An anterior segment stabilization device, characterized in that the first to fourth fixing members, the vertical support member, and the horizontal support member are located on the same plane.
In Article 15,
An anterior segment stabilization device, characterized in that 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 member, a third membrane connecting the horizontal support member and the third fixing member, and a fourth membrane connecting the third fixing member and the fourth fixing member.
In the third paragraph,
The above support member is a vertical support member that can be made of a flexible material,
The above-mentioned plurality of fixing members are a first fixing member located inside the vertical support member and connected to the push member, a second fixing member located inside the vertical support member and connected to the push member, and a third fixing member located inside the vertical support member and connected to the push member.
An anterior segment stabilization device characterized in that when the above push member moves linearly forward, the first to third fixing members are exposed to the outside of the vertical support member and spread radially.
In Article 17,
An anterior segment stabilization device characterized in that the membrane portion is formed in a circular shape and attached to the first to third fixing members.

Images