KR101811943B1 - The cornea fixation device for corneal suturing - Google Patents

The cornea fixation device for corneal suturing Download PDF

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Publication number
KR101811943B1
KR101811943B1 KR1020160025199A KR20160025199A KR101811943B1 KR 101811943 B1 KR101811943 B1 KR 101811943B1 KR 1020160025199 A KR1020160025199 A KR 1020160025199A KR 20160025199 A KR20160025199 A KR 20160025199A KR 101811943 B1 KR101811943 B1 KR 101811943B1
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corneal tissue
cornea
donor
corneal
adsorption
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KR1020160025199A
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Korean (ko)
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KR20170102718A (en
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정완균
박익종
김명준
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포항공과대학교 산학협력단
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Priority to KR1020160025199A priority Critical patent/KR101811943B1/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
    • A61F2/142—Cornea, e.g. artificial corneae, keratoprostheses or corneal implants for repair of defective corneal tissue
    • A61F2/143—
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/0008—Introducing ophthalmic products into the ocular cavity or retaining products therein

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Vascular Medicine (AREA)
  • Ophthalmology & Optometry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Transplantation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Prostheses (AREA)
  • Surgical Instruments (AREA)

Abstract

The present invention relates to a method for absorbing a cornea through a contact surface so as to adsorb and fix corneal tissue of a donor and corneal tissue of a donor, a body having a contact surface formed concavely corresponding to an eyeball, A suction part, a donor corneal tissue, and a suture part formed on the body part so that the corneal tissue of the donor can be sealed with the corneal tissue adsorbed thereon, .
The cornea fixation device for corneal suture according to the present invention can fix the corneal tissue of the donor and the corneal tissue of the recipient on both sides of the suture part, thereby stably performing the suture.
In addition, since it is not adsorbed at the center of the corneal tissue, the corneal injury can be minimized.

Description

[0001] The present invention relates to a corneal fixation device for corneal suturing,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corneal fixation apparatus for corneal sealing, and more particularly, to a corneal fixation apparatus for minimizing movement and deformation of the cornea during corneal stitching.

 Corneal transplantation is a procedure in which a cornea of 7 to 9 mm in diameter is incised in a patient's opacified patient, and the donor cornea is transplanted into the site.

Corneal suture is one of the most demanding tasks in that it requires a very thin and soft tissue seal. In general, a total of 12 to 24 sutures are made, and because the cornea is slippery and soft, the operator can fix the cornea with one hand using toothed forceps with a fine needle at the tip of the forceps, Suturing was performed by inserting a needle. At this time, since the endothelium on the underside of the cornea is not treated once it is damaged, the operator must hold the 0.5 mm thick side of the cornea with toothed forceps.

In order to solve the difficulty of the suture, a device for fixing the cornea using vacuum pressure has been developed to lower the difficulty of incision and suture of the cornea. Patent Document 1 (US 7147648) discloses an apparatus in which cornea is fixed using vacuum pressure and has eight suture grooves. However, in Patent Document 1, since the vacuum port is located at the center of the cornea, there is a risk of damaging the visual acuity, and only the grafted cornea is fixed, so that the patient's cornea is still fixed with toothed forceps.

US 7147648 B2 (Dec. 12, 2006)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a corneal fixation apparatus for corneal stitching which can prevent the conventional cornea fixation apparatus from causing damage to the cornea and stably fixing the same even when the needle is inserted.

As a means for solving the above-mentioned problem, there is provided a method of treating a corneal tissue of a donor and a corneal tissue of a recipient, comprising the steps of: a body having a contact surface concaved corresponding to an eyeball; A suction part configured to absorb the corneal tissue of the donor, a suction part configured to absorb the corneal tissue of the donor, and a suture part formed on the body part so that the corneal tissue of the recipient can be sealed outside A corneal fixation device may be provided.

At this time, the suction portion may be provided around the suture portion so as to minimize the movement of the cornea tissue of the donor and the corneal tissue of the recipient during suturing.

On the other hand, the body part may be configured to be rotationally symmetrical, the outer diameter may be larger than the corneal tissue of the donor, and the contact surface may be a surface approximate to the curvature of the eyeball so as to be close to the eyeball.

The suture portion may be configured to expose the corneal tissue of the donor and the corneal tissue of the recipient to the outside.

Furthermore, the sealing portion includes a plurality of sealing grooves formed from the outside of the body portion to the central portion side, and the sealing groove can be formed to have a predetermined length from the outside of the body portion.

On the other hand, the adsorption unit can adsorb the corneal tissue of the donor and the corneal tissue of the recipient using the negative pressure.

The adsorption part is provided with an adsorption port provided on one side of the body part so as to be able to provide a negative pressure from the outside, a plurality of adsorption holes formed on the side of the contact surface, and a plurality of adsorption holes formed on the inside of the body part to communicate with the plurality of adsorption holes And an adsorption line.

At this time, the plurality of the sealing grooves may be rotationally symmetrically disposed on the body portion.

The adsorbing part may include an adsorption hole formed radially on both sides of the sealing groove adjacent to the sealing groove so as to simultaneously fix the corneal tissue of the donor and the corneal tissue of the recipient.

And a suction hole may be formed in the contact surface along the circumference of each sealing groove.

Furthermore, the suction holes are formed in the radial direction on both sides of the sealing groove on the contact surface, and extend in the center direction of the body portion and can be connected to the adjacent suction holes.

The suture groove is formed along the direction of the interface so that a part of the interface is exposed through the interface, and the absorption part is formed in the circumferential direction adjacent to the suture groove so as to adsorb and fix the corneal tissue of the donor and the corneal tissue of the recipient .

The body may include an adsorption pad having a contact surface and a pad cover coupled to the adsorption pad in a thickness direction.

And may have the same curvature so that the adsorption pad and the pad cover can have a constant thickness when they are combined.

In addition, the body part may include a pad cover and an adsorption pad which are coupled in the thickness direction, and may be configured to form an adsorption line on the inner surface of the pad cover and the adsorption pad.

Further, a corneal fixation system including a corneal fixation device for fixing the cornea, a driving part for controlling the position of the corneal fixation device, a vacuum pump for providing a negative pressure to fix the cornea fixation device, and a vacuum regulator for stabilizing the negative pressure Can be provided.

In addition, the method comprises the steps of adsorbing corneal tissue of an incised donor and placing it on the eye of the recipient, aligning the corneal tissue of the donor with the corneal tissue of the recipient, the corneal fixation device configured to adsorb the corneal tissue of the donor, Controlling the corneal fixation device to fix the corneal tissue of the donor and the recipient's corneal tissue by supplying a negative pressure to the corneal tissue of the donor, and sealing the corneal tissue of the donor and the recipient through the seal groove formed in the corneal fixation device A control method of the corneal stitching system can be provided.

At this time, the step of fixing the corneal tissue can be controlled so that the corneal tissue of the donor and the corneal tissue of the recipient are simultaneously fixed in the corneal fixation device.

In addition, the suturing step may be performed during the step of fixing the corneal tissue of the donor and the corneal tissue of the recipient.

Placing the incised corneal tissue of the donor further in the eye of the recipient, aligning the corneal tissue of the recipient with the corneal tissue of the recipient, providing the donor's corneal tissue with a donor at a plurality of points around the interface between the corneal tissue of the donor and the corneal tissue of the recipient A cornea fixation device configured to absorb the corneal tissue of the recipient and a corneal fixation device configured to absorb the corneal tissue of the recipient, and a step of sealing the interface through the seal groove formed in the corneal fixation device.

The method may further include rotating the cornea fixation device to rotate the cornea fixation device at a predetermined angle so that the next suture site is exposed to the suture groove in the suturing step, and the fixing step and the sealing step may be performed again.

The cornea fixation apparatus for corneal stitching according to the present invention can fix the corneal tissue of the donor and the corneal tissue of the recipient on both sides of the suture section, thereby stably performing the suture.

In addition, since it is not adsorbed at the center of the corneal tissue, the corneal injury can be minimized.

1 is a perspective view of a cornea fixation device according to the present invention.
2 is a perspective view of the pad cover.
3 is a perspective view of the adsorption pad.
4 is a cross-sectional view taken along line A-A 'in Fig.
5 is a modification of the adsorption pad.
6 is a conceptual diagram of the corneal stapling system.
7 is a flowchart showing a control method of the cornea fixation device.
8 is a flowchart of a corneal transplantation method according to the present invention.

Hereinafter, a cornea fixation device 100 for corneal sealing according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the embodiments, the names of the respective components may be referred to as other names in the art. However, if there is a functional similarity and an equivalence thereof, the modified structure can be regarded as an equivalent structure. In addition, reference numerals added to respective components are described for convenience of explanation. However, the contents of the drawings in the drawings in which these symbols are described do not limit the respective components to the ranges within the drawings. Likewise, even if the embodiment in which the structure on the drawing is partially modified is employed, it can be regarded as an equivalent structure if there is functional similarity and uniformity. Further, in view of the level of ordinary skill in the art, if it is recognized as a component to be included, a description thereof will be omitted.

2 is a perspective view of the pad cover 111, and FIG. 3 is a perspective view of the absorption pad 112. FIG.

As shown in the figure, the cornea fixation device 100 for corneal sealing may include a body 110, a sealing portion, and a suction portion 130.

The body 110 forms the overall structure of the cornea fixation device 100 and may be formed in the shape of a disc as a whole. The body 110 has a contact surface that contacts the eyeball e on the lower side and the contact surface may have a concave shape having the same curvature as the eyeball e so as to contact the spherical eyeball e. The cornea fixation device 100 may be configured to be rotationally symmetrical with respect to the center of the body 110. The diameter of the body 110 may be larger than the diameter of the interface b where the corneal tissue d of the donor meets the corneal tissue r of the recipient. Generally, since the cornea of the patient is incised to a diameter of 7 to 9 mm, the outer diameter of the body 110 may be 10 mm or more. In this case, the corneal tissue (d) of the donor and the corneal tissue (r) of the beneficiary can be adsorbed together by using the adsorption unit 130 to be described later.

The body 110 may be configured as a generally concave disc and may be rotationally symmetrical. The body 110 may include a pad cover 111 and a suction pad 112. The pad cover 111 and the adsorption pad 112 are coupled in the thickness direction. The adsorption pad 112 is provided with a contact surface which is in contact with the eye e at the lower side, and can be configured to have the same thickness. The upper surface of the pad cover 111 may be configured to have the same curvature as that of the contact surface of the adsorption pad 112 so that the entire body 110 may have a uniform thickness.

The pad cover 111 and the adsorption pad 112 may be coupled to each other to form a channel in which a negative pressure is applied to the adsorption unit 130. [ The connection portion between the pad cover 111 and the adsorption pad 112 may be sealed so that a vacuum can be maintained in the adsorption unit 130. At this time, an epoxy or the like can be used as the sealing, and such a sealing method is widely used, so that detailed description thereof will be omitted.

The suture is configured to allow the surgeon or robot to seal the cornea. The sealing portion is formed in the shape of a groove and is formed toward the center portion from the outside of the body portion 110. The length of the suture portion may be formed to a length such that the interface (d) of the donor and the interface (b) of the corneal tissue (r) of the recipient are exposed. At this time, since the corneal tissue affecting the visual acuity located in the central portion is protected, the maximum length of the suture portion can be selected so that the portion of the suture portion is not exposed. The width of the suture portion is formed to be wider than the suture needle so as not to cause interference between the suture needle and the body portion 110 during suturing. Further, the edge of the sealing groove 120 may be formed in a tapered shape so as to reduce interference during sealing.

The sealing portion may be formed in rotational symmetry on the body portion 110. At this time, the doctor or the robot may be configured so as to penetrate from the upper side to the contact surface so as to approach and seal the interface (b). In addition, a plurality of the sealing portions may be formed so as to seal the various portions in a fixed state. For example, as shown in FIGS. 1 to 3, the sealing portions may be formed at four angular intervals of 90 degrees in the rotation direction. In this case, the cornea is fixed at four points without changing the position of the cornea fixation device 100 Suture is possible. However, although the example in which the number of the sealing portions is four is described, it is only one example, and it may be composed of various numbers such as three, six, eight.

Hereinafter, the adsorption unit 130 will be described with reference to FIGS. 1 to 4. FIG.

4 is a cross-sectional view taken along line A-A 'in Fig.

As shown in the figure, the adsorption unit 130 may include an adsorption port 133, a suction hole 131, and an adsorption line 132.

The suction port 133 is a portion connected to a device for providing a negative pressure from the outside. The suction port 133 may be formed as a single unit and may be provided at a central portion of the pad cover 111. However, the position and the number of the adsorption ports 133 may be variously configured at various positions.

The suction holes 131 are provided on the contact surface side so as to be able to adsorb the cornea with a negative pressure. The suction holes 131 may be provided adjacent to the suture portion in order to minimize the movement of the cornea during the suture and improve the stability. Referring again to FIG. 3, the suction holes 131 may be formed as openings formed in the longitudinal direction adjacent to both sides of the seal portion. The width of the suction hole 131 can be selected to be such that the damage of the cornea can be minimized. That is, when the width is too large, the cornea may be sucked up. When the width is too small, the suction force may decrease and the fixing force may not be sufficient. Therefore, it is preferable that the cornea is formed in an appropriate size to prevent corneal injury. As shown in FIG. 3, the suction holes 131 may extend toward the central portion of the adsorption pad 112 and may be connected to the adjacent suction holes 131 to form an L-shape. On the other hand, when four sealing grooves 120 are provided, four suction holes 131 may be provided between each sealing hops. In this case, the four points for sealing can be stably adsorbed from both sides. In the meantime, the suction hole 131 may be modified to have a configuration in which the suction hole 131 and the sealing groove 120 alternate with each other in the rotation direction.

The suction hole 131 may be formed to extend in the radial direction about the interface b to a predetermined length so that the corneal tissue d of the donor and the corneal tissue r of the recipient can be simultaneously adsorbed. Therefore, at least two parts of the donor corneal tissue (d) and at least two parts of the corneal tissue (r) of the recipient can be adsorbed and fixed around the suture around the interface (b) .

The suction line 132 is formed inside the body 110 and may be configured to connect the suction port 133 and the suction hole 131. At this time, the adsorption line 132 may be provided using a space formed between the adsorption pad 112 and the pad cover 111 without forming a separate flow path.

5 is a plan view of the adsorption pad. Fig. 5 (a) is the adsorption pad of the first embodiment, and Figs. 5 (b) and 5 (c) are modifications.

As shown in the drawing, the suction hole 131 may be formed in a U-shape surrounding the periphery of the seal portion. When the seal portion is composed of four pieces, four U-shaped suction holes 131 are provided inside the seal portion . In this case, at least two portions of the corneal tissue (d) of the donor and at least two portions of the corneal tissue (r) of the recipient can be adsorbed around the suture of the corneal stroma.

5 (c), a state in which the sealing groove 120 is formed in the rotating direction is shown. The seal groove 120 may be formed in the form of a through hole formed in the thickness direction as shown in FIG. 2, wherein the distance from the center of the seal groove 120 may be such that the interface (b) between the cornea tissues is exposed to the through-hole. Further, the suction holes may be provided on the center side and the outer side of the sewing hose, and may extend in the rotational direction in which the sealing groove 120 is formed. Even in this case, at least four portions can be adsorbed and fixed at the periphery of the sealing portion.

6 is a conceptual diagram of the corneal stapling system.

As shown, the corneal sealing system may include a cornea fixation device 100, a vacuum pump 200, a vacuum regulator 300, and a driving unit (not shown).

The cornea fixation device 100 may be the cornea fixation device 100 described in the previous embodiments.

The vacuum pump 200 is provided to provide a negative pressure to the corneal stabilization device 100, and the vacuum regulator is provided to provide a uniform sound pressure. The vacuum regulator 300 may be connected to the tube to be connected to the suction port 133 and ultimately provide a negative pressure to the suction hole 131 to allow the cornea to be adsorbed.

At this time, the driving unit may be configured to enable three-axis control of the position of the cornea fixation device 100, and may be configured to be rotatable if necessary. At this time, a driving unit (not shown) and a sensor (not shown) for three-axis control may be provided.

The number of the stitching grooves 120 of the cornea fixation device 100 is fixed. In order to seal the corneal tissue, a greater number of points must be stitched to seal the corneal tissue. After the primary suturing is completed, the corneal fixation device 100 may be rotated at a predetermined angle to perform secondary suturing to seal a plurality of points. Of course, during rotation, only the cornea fixation device 100 is rotated without fixing the cornea. For example, in the case where four sealing grooves 120 are provided, it is possible to seal eight locations by moving two times, and further positions can be fixed so as to be sewn by adjusting the angle of rotation.

As described above, the cornea fixation device 100 and system for corneal sealing according to the present invention can fix both the cornea of the donor and the cornea of the recipient, thereby stably performing the suturing. In addition, since the suction part 130 is not disposed at the center, damage to the corneal tissue, which affects the visual acuity, can be prevented.

7 is a flowchart showing a control method of the cornea fixation device.

As shown in the figure, the control method of the corneal fixation device includes a step S110 of aligning the corneal tissue, a step S120 of aligning the corneal tissue, a step S130 of controlling the corneal fixation device to fix the corneal tissue of the donor and the corneal tissue of the recipient simultaneously, , And stitching (S140).

The control method of the cornea fixation device 100 provides a method of controlling the cornea fixation device 100 so that a series of steps necessary for the cornea implantation is performed.

The step of placing the corneal tissue (S110) is a step of placing the corneal tissue incised in the donor's eye (e) on the recipient's eye (e).

The aligning step S120 corresponds to a step of positioning the corneal tissue d of the donor to a desired position on the eye e of the recipient. The aligning step may be performed using the corneal fixing apparatus 100 described in the previous embodiment, or may be performed using a separate corneal absorption apparatus.

Controlling the corneal fixation device to simultaneously fix the corneal tissue of the donor and the corneal tissue of the recipient (S130) prevents movement between the corneal tissue (d) of the donor and the corneal tissue (r) of the recipient prior to suturing, The corneal tissue (d) of the donor and the corneal tissue (r) of the recipient are fixed together.

The position of the corneal fixation device 100 may be shifted so that the donor's corneal tissue d and the beneficiary's corneal tissue r can be simultaneously adsorbed and fixed and the interface b can be exposed on the suture groove 120. [ To fix the corneal tissue. The vacuum pump 200 connected to the cornea fixation device 100 is operated to provide a negative pressure to suck and fix the corneal tissues d and r.

The sealing step S140 corresponds to a step of sealing the interface (b) exposed to the sealing portion. The cornea fixation device 100 may be configured to release the pressure of the cornea fixation device 100 to seal a plurality of points greater than the number of the suture portions, to rotate the same, to fix the new point, and to repeat the plurality of points.

8 is a flowchart of a corneal transplantation method according to the present invention.

The corneal transplantation procedure comprises the steps of placing the corneal tissue of the incised donor in the eye of the recipient (S210), aligning the corneal tissue of the donor with the corneal tissue of the recipient (S220), using the corneal fixation device (100) A step S240 of fixing the corneal tissue of the recipient and a corneal tissue of the recipient, a step S240 of sealing the interface b, a step S250 of rotating the cornea fixation device, and a completion determination step S260 .

At this time, the cornea fixation device 100 is configured to simultaneously adsorb and fix the corneal tissue of the donor and the corneal tissue r of the recipient, and the interface (b) exposed to the suture groove 120 in a fixed state is sealed can do.

The step of placing the incised cornea in the eye of the recipient (S210) may be accomplished by placing the cornea using a corneal fixation device or by placing the corneal tissue down on the eye of the surgeon.

Aligning the corneal tissue of the donor with the corneal tissue of the recipient (S220) may allow the surgeon to place the corneal tissue of the donor at a location that best matches the incisional surface of the recipient with the damaged corneal tissue removed. (Not shown) to compare the incision surface of the donor's corneal tissue with the incision surface of the recipient's corneal tissue to match the incision surface of the recipient's corneal tissue so as to be seated at the optimal position Lt; / RTI >

The step of fixing the corneal tissue of the donor and the corneal tissue of the recipient (S230) is a step of fixing for the suturing using the corneal fixation device 100. [ At this time, the corneal tissue (d) of the donor and the corneal tissue (r) of the recipient can be simultaneously adsorbed and fixed.

The sealing step S240 corresponds to the step of sealing the corneal tissue d of the donor and the corneal tissue r of the recipient through a sealing groove formed in the corneal fixing device 100 by a doctor or a sewing robot . At this time, a plurality of sealing grooves may be formed so as to seal a plurality of points.

The completion judgment step S250 is a step of judging whether or not the corneal stitching is completed. If the corneal stitching is completed at the appropriate number of points, it can be judged that further stitching is required if the proper number of stitching is not performed .

The step S260 of rotating the cornea fixation device 100 corresponds to the step of rotating the cornea fixation device 100 so that the other part can be sealed when the suture is completed through the suture groove 120. [

Thereafter, steps S230 through S250 of fixing the corneal tissue may be repeatedly performed.

100: corneal fixation device
d: corneal tissue of the donor r: corneal tissue of the recipient
b: boundary surface e: eyeball
110:
111: pad cover 112: adsorption pad
120: Suture groove
130: suction part 131: suction hole
132: suction line 133: suction port
200: Vacuum pump
300: Vacuum regulator
S110: Step of seating corneal tissue
S120: aligning the corneal tissue of the donor with the corneal tissue of the recipient
S130: controlling the corneal fixation device so as to simultaneously fix the corneal tissue of the donor and the corneal tissue of the recipient
S140: Stitching step
S210: Placing the donor's corneal tissue in the eye of the recipient
S220: aligning the corneal tissue of the donor with the corneal tissue of the recipient
S230: fixing the corneal tissue of the donor and the corneal tissue of the recipient
S240: Stitching step
S250: Completion determination step
S260: Step of rotating the corneal fixation device

Claims (16)

A body having a contact surface concave corresponding to the eyeball;
A suction part configured to absorb the cornea through the contact surface so that the corneal tissue of the donor and the corneal tissue of the recipient can be absorbed and fixed; And
And a suture part formed on the body part so that the corneal tissue of the donor and the corneal tissue of the recipient can be sealed from the outside in a state that the corneal tissue is absorbed by the suction part,
Wherein the adsorption portion includes a plurality of adsorption holes formed on the contact surface side,
Wherein the suction hole is provided adjacent to the suture portion so as to prevent damage to the central portion of the corneal tissue of the donor and at least a portion thereof is formed in a direction parallel to the suture portion. The method according to claim 1,
Wherein the absorbent portion is provided around the suture portion so as to minimize movement of the cornea tissue of the donor and the corneal tissue of the beneficiary upon suturing. 3. The method of claim 2,
The body part
And the outer diameter of the corneal tissue is larger than the corneal tissue of the donor,
Wherein the contact surface comprises a surface close to the curvature of the eyeball so as to be in close contact with the eyeball. The method according to claim 1,
Wherein the suture portion is configured to expose a part of a boundary of the donor's corneal tissue and the beneficiary's corneal tissue to the outside. The method according to claim 1,
Wherein the sealing portion includes a plurality of sealing grooves formed from the outer side to the central side of the body portion,
Wherein the sealing groove is formed to have a predetermined length from the outside of the body portion. The method according to claim 1,
Wherein the adsorbing unit adsorbs the corneal tissue of the donor and the corneal tissue of the beneficiary using negative pressure. The method according to claim 6,
The adsorption unit
An adsorption port provided at one side of the body portion so that the negative pressure can be provided from the outside; And
And an adsorption line formed inside the body to fluidly communicate from the adsorption port to the plurality of adsorption holes. ≪ Desc / Clms Page number 19 > 6. The method of claim 5,
Wherein the plurality of sealing grooves are rotationally symmetrically disposed on the body. The method according to claim 1,
Wherein the sealing portion includes a plurality of sealing grooves,
The adsorption unit
And a suction hole formed radially on both sides of the sealing groove adjacent to the sealing groove so as to simultaneously fix the corneal tissue of the donor and the corneal tissue of the recipient. . 10. The method of claim 9,
Wherein the suction holes are formed on the contact surface along the circumference of each of the sealing grooves. 10. The method of claim 9,
The suction hole
A plurality of sealing grooves formed on both sides of the sealing groove on the contact surface in a radial direction,
Wherein the corneal stent is connected to an adjacent suction hole extending in a center direction of the body part. 5. The method of claim 4,
Wherein the suture portion includes a suture groove formed along a direction of the interface so that a part of the interface between the corneal tissue of the donor and the corneal tissue of the recipient is exposed,
Wherein the adsorbing portion is formed in a circumferential direction adjacent to the sealing groove so as to adsorb and fix the corneal tissue of the donor and the corneal tissue of the beneficiary. 3. The method of claim 2,
The body part
And a pad cover coupled to the absorbent pad in a thickness direction of the cornea. 14. The method of claim 13,
Wherein the adsorption pad and the pad cover have the same curvature so that the adsorption pad and the pad cover can have a constant thickness when they are combined. 8. The method of claim 7,
Wherein the body part comprises a pad cover coupled to the thickness direction and an adsorption pad, and the adsorption line is formed on an inner surface of the pad cover and the adsorption pad combined with each other. Corneal Fixation Device for Fixing the Cornea;
A driver for controlling a position of the cornea fixation device;
A vacuum pump for providing a negative pressure to fix the cornea to the cornea fixation device;
A vacuum regulator for stabilizing the negative pressure; And
And a sealing device configured to seal the cornea,
The cornea fixation device comprises:
A body having a contact surface concave corresponding to the eyeball,
A suction unit configured to suction the cornea through the contact surface so that the corneal tissue of the donor and the corneal tissue of the recipient can be fixed using the negative pressure, and a suction unit configured to suction the cornea of the donor, And a suture part formed on the body so that the cornea can be sealed,
Wherein the adsorption portion includes a plurality of adsorption holes formed on the contact surface side,
Wherein the suction hole is provided adjacent to the suture portion so as to prevent damage to the central portion of the corneal tissue of the donor, and at least a part of the suction hole is formed in a direction parallel to the suture portion.
KR1020160025199A 2016-03-02 2016-03-02 The cornea fixation device for corneal suturing KR101811943B1 (en)

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KR101811943B1 true KR101811943B1 (en) 2017-12-22

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KR20230046728A (en) 2021-09-30 2023-04-06 포항공과대학교 산학협력단 Tissue fixation pad and automatic needle insertion device having the same

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KR102538079B1 (en) * 2020-10-13 2023-05-30 포항공과대학교 산학협력단 Medical vacuum tweezer and tissue suturing device including the same
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