CN115957072A - Lens capsular bag draw hook of prefabricated suture - Google Patents
Lens capsular bag draw hook of prefabricated suture Download PDFInfo
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- CN115957072A CN115957072A CN202310117669.8A CN202310117669A CN115957072A CN 115957072 A CN115957072 A CN 115957072A CN 202310117669 A CN202310117669 A CN 202310117669A CN 115957072 A CN115957072 A CN 115957072A
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- suture
- capsular bag
- retractor
- lens
- tension section
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Abstract
The invention discloses a crystalline lens capsular bag retractor for a prefabricated suture, which comprises a needle head, a suture and a capsular bag retractor complex; the bag-shaped drag hook complex is provided with a tension section and a plurality of drag hooks, the tension section is arc-shaped, the tail end of the tension section is provided with a positioning hole, the drag hooks are L-shaped and are provided with a first end part and a second end part, the first end parts of the plurality of drag hooks are connected with the tension section, and the second end parts of two adjacent drag hooks are combined and are connected with one end of the suture; the other end of the suture is connected with the needle head; the retractor can be implanted into an eye through a small corneal incision, can be conveniently fixed on a scleral wall in any direction, avoids discomfort and falling caused by friction between a suture and intraocular tissues, and can stably support the lens capsular bag.
Description
Technical Field
The invention relates to the technical field of ophthalmic appliances, in particular to a lenticular bag retractor with a prefabricated suture.
Background
The lens of the eyeball is an important refractive tissue, and is suspended behind the iris and in front of the vitreous body by means of a 360-degree zonule, and is equivalent to the lens of a camera. The hemidislocation of the crystalline lens is caused by the damage or abnormal development of the crystalline lens and/or the zonules, which is often caused by ocular trauma, ophthalmic surgery or some genetic diseases (such as marfan syndrome, etc.). Common surgical treatment methods for hemidislocation of the lens include: (1) Removing the crystalline lens completely, and fixing the artificial lens on the eyeball wall by using a suture; the operation has large trauma, more operation incisions and complicated operation steps, the injury and disturbance to the tissues in the eyes easily cause complications such as intraocular hemorrhage, retinal detachment and the like, and the suture for fixing the artificial lens often rubs the eyeball to cause eye pain or causes the fracture of the suture due to excessive friction to cause dislocation of the artificial lens; (2) The capsular bag draw hook is adopted to assist in fixing the crystalline lens, the artificial crystalline lens is implanted into the capsular bag after the crystalline lens is removed, and then the capsular bag tension ring is implanted according to the situation, or the capsular bag tension ring and/or the artificial crystalline lens are fixed by a suture. The currently marketed capsular bag draw hooks are all of a single draw structure, the draw force is limited, and the operation can be effectively completed by a plurality of draw hooks; moreover, the cornea needs to be placed in the anterior chamber through a plurality of corneal incisions, which occupies the operation space and causes inconvenient operation; after the lens extraction and the intraocular lens implantation operation are finished, the capsular bag draw hooks need to be taken out one by one, and the capsular bag or the intraocular lens needs to be fixed by jointly using tension rings and sutures. Such capsular bag retractor also presents a number of inconvenient and significant disadvantages to the procedure.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the art described above. Therefore, the invention aims to provide a preformed suture lens bag draw hook which can be implanted into an eye through a small corneal incision and can be conveniently fixed on a scleral wall in any direction, so that the suture is prevented from being uncomfortable and falling off due to friction with intraocular tissues, and a lens bag can be stably supported.
In order to achieve the above purpose, the embodiment of the invention provides a lens capsular bag retractor with a prefabricated suture, which comprises a needle head, a suture and a capsular bag retractor complex;
the bag-shaped drag hook complex is provided with a tension section and a plurality of drag hooks, the tension section is arc-shaped, the tail end of the tension section is provided with a positioning hole, the drag hooks are L-shaped and are provided with a first end part and a second end part, the first end parts of the plurality of drag hooks are connected with the tension section, and the second end parts of two adjacent drag hooks are combined and are connected with one end of the suture;
the other end of the suture is connected with the needle head.
According to the lens capsular bag retractor with the prefabricated suture, the retractor can be implanted into eyes through a small incision of 2 mm-3 mm, and corneal astigmatism caused by an operation incision can be effectively prevented; the step of fixing the suture on the lens capsule bag can be eliminated, the suture can directly fix the draw hook in the sclera plate layer, the operation time can be saved, and the operation steps can be simplified; the capsular bag and hook complex is provided with a plurality of hooks, so that the radial shearing force of a single hook on the edge of the lens capsular bag can be reduced, the possibility of tearing of the capsular bag is reduced, the hooks are connected with the tension sections, the contact area of the hooks and the crystalline capsular bag is increased, and the stability of the capsular bag can be improved; therefore, the support can be provided for the subluxation of the crystalline lens, the subluxation or the complete dislocation of the artificial crystalline lens caused by various reasons, and the condition is provided for successfully completing the extraction of the crystalline lens and the implantation or the restoration of the artificial crystalline lens.
In addition, the preformed suture capsular bag retractor according to the invention can also have the following additional technical characteristics:
optionally, the suture and the capsular bag and retractor complex are made of the same material.
Optionally, the included angle of the draw hook is 0-90 degrees.
Optionally, the first end of the retractor is perpendicularly connected to the tension section.
Furthermore, the length of the draw hook is 2 mm-5 mm.
Optionally, the tension segment has an arc length of 2mm to 5mm and a diameter of 0.1mm to 1mm.
Optionally, the capsular bag and retractor complex is integrally formed.
Optionally, the needle head is an arc round needle or a triangular needle, and the arc length of the needle head is 0.5 cm-1.5 cm.
Optionally, the suture is 3-0,4-0 or 5-0.
Optionally, the suture is 20mm to 200mm in length.
Drawings
FIG. 1 is a schematic diagram of a preformed suture capsular bag retractor according to an embodiment of the present invention;
FIG. 2 is a schematic view of a step of intraocular implantation according to an embodiment of the present invention;
FIG. 3 is a schematic view of another step of intraocular implantation according to an embodiment of the present invention;
FIG. 4 is a schematic view after implantation in an eye according to an embodiment of the invention;
description of the reference numerals:
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.
In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
A preformed suture capsular bag retractor, which may be implanted into an eye through a small corneal incision and may be conveniently secured to the scleral wall in any orientation, avoiding undesirable detachment due to friction of the suture with the intraocular tissue, according to embodiments of the present invention, is described below with reference to fig. 1-4. The capsular bag draw hooks can be implanted into a plurality of capsular bags, can stably support the lens capsular bags, create conditions for lens extraction and intraocular lens implantation, and can be permanently placed in eyes without being taken out; can greatly simplify the operation insufficiency of the operation of the hemidislocation of the crystalline lens or the dislocation of the artificial crystalline lens, reduce the operation complication and improve the success rate of the operation.
The lens capsular bag retractor of the prefabricated suture according to the embodiment of the invention comprises a needle head 1, a suture 2 and a capsular bag retractor complex.
Specifically, the capsular bag and hook complex comprises a tension section 31 and a plurality of hooks 32, wherein the tension section 31 is arc-shaped, the tail end of the tension section 31 is provided with a positioning hole 33, the hooks 32 are L-shaped and are provided with a first end portion 32a and a second end portion 32b, the first end portions 32a of the hooks 32 are all connected with the tension section 31, and the second end portions 32b of two adjacent hooks 32 are combined and connected with one end of a suture 2; the other end of the suture 2 is connected with a needle 1.
When the lens capsular bag is fixed, the use method comprises the following steps:
s1, performing capsulorhexis on the anterior lens capsule through a cornea or corneal limbus incision (2 mm-3 mm) to form a lens capsule opening (diameter is 4 mm-6 mm).
S2, introducing the needle head 1 of the preformed suture lens capsular bag draw hook into the anterior chamber through the cornea or corneal limbus incision, and leading out the needle head from the scleral surface 2 mm-4 mm behind the iris and the corneal limbus in the position of lens subluxation; or in the hemidislocation position of the crystalline lens, introducing an injector needle from the outside of the eye to the back of the iris in the eye on a sclera 2 mm-4 mm behind the limbus, introducing the needle 1 of the draw hook of the crystalline lens bag from the incision of the cornea or the limbus, leading the injector needle to meet the needle 1, penetrating the needle 1 into the injector needle, and leading the injector needle out of the eye.
S3, the needle head 1 enters the sclera penetrating point again, penetrates through the scleral lamina by about 2-5 mm, and fixes the suture 2 by using friction force; sutures 2 are adjusted to expand the capsular bag.
And S4, implanting a plurality of capsular bag draw hooks of the preformed suture lines at a plurality of positions if necessary until the capsular bag is positioned at the center of the pupil area.
S5, cutting off the exposed suture 2, and ironing the thread head into a round knot or embedding the round knot in a sclera plate layer to complete the operation of implanting the lens capsular bag hook of the prefabricated suture.
The method of using the semi-dislocation or total dislocation of the intraocular lens with the capsular bag is similar to the steps of S1-S5 described above, and only the capsulorhexis operation need not be performed.
Therefore, the lens capsular bag retractor with the pre-prepared sutures can be implanted into eyes through a small incision of 2 mm-3 mm, and corneal astigmatism caused by an operation incision can be effectively prevented; the step of fixing the suture 2 on the lens capsular bag can be eliminated, the hook 32 is directly fixed in the sclera plate layer by the suture 2, the operation time can be saved, and the operation steps can be simplified; the bag drag hook complex is provided with a plurality of drag hooks 32, so that the radial shear force of a single drag hook on the edge of the lens bag can be reduced, the possibility of tearing the bag is reduced, the drag hooks 32 are connected with the tension section 31, the contact area of the drag hooks 32 and the lens-shaped bag is increased, and the stability of the bag can be increased; therefore, the support can be provided for the subluxation of the crystalline lens, the subluxation or the complete dislocation of the artificial crystalline lens caused by various reasons, and the condition is provided for successfully completing the extraction of the crystalline lens and the implantation or the restoration of the artificial crystalline lens.
In some specific examples, the needle 1 is made of stainless steel. The suture 2 and the capsular bag and hook complex are made of the same material. Thus, the whole capsular bag retractor has high biocompatibility, such as polypropylene, which is resistant to biodegradation and has good shape memory performance.
For the capsular bag retractor complex, it may be integrally formed. The draw hooks 32 may be two as shown in fig. 1. The first end 32a of the draw hook 32 is connected perpendicularly to the tension section 31. The second ends 32b of the two hooks 32 are associated and connected to the suture 2. The included angle of the draw hook 32 can be 0-90 degrees; the length of the draw hook 32 may be 2mm to 5mm. Thus, the hook 32 can stabilize the capsular bag well.
For the tension segment 31, the arc length is 2mm to 5mm and the diameter is 0.1mm to 1mm.
The needle head 1 can be an arc round needle or a triangular needle, and the arc length of the needle head is 0.5 cm-1.5 cm.
For suture 2, it may be 3-0,4-0 or 5-0, with suture lengths of 20mm-200mm.
Thus, with reference to fig. 2 and 3, the patient is in a supine position, and the upper and lower eyelids are opened with the eyelid retractor after applying topical anesthetic, exposing the cornea and the anterior conjunctiva and sclera. The operator makes a corneal or limbal incision of about 2mm in length and performs an anterior capsulotomy with capsulorhexis forceps to form a capsular bag opening (4 mm to 6mm in diameter). Introducing a needle head 1 of a preformed suture lens bag retractor into the anterior chamber through the cornea or the limbus incision, and leading out from the sclera and the conjunctiva which are 2-4 mm behind the iris and the limbus in the position of lens subluxation; or in the half-dislocation position of the crystalline lens, introducing an injector needle head from the outside of the eye to the back of the iris in the eye on a sclera 2 mm-4 mm behind the limbus, introducing a suture needle head of the draw hook of the crystalline lens bag from the incision of the cornea or the limbus, leading the injector needle head to meet with the suture needle head, and penetrating the suture needle head into the injector needle head to be led out of the eye. The suture needle head enters the sclera piercing point again, penetrates about 2mm to 5mm in the scleral lamina and fixes the suture by using friction force; the sutures are adjusted to expand the capsular bag. Implanting a plurality of lens bag drag hooks with prefabricated sutures in a plurality of positions if necessary until the lens bag is positioned at the center of the pupillary region again, cutting off the exposed sutures, and scalding the suture ends into round knots or embedding the sutures in the scleral lamina layer, and finishing the implantation operation of the bag drag hooks.
The crystalline lens capsular bag retractor with the pre-manufactured suture lines is applied to the situation that crystalline lenses or artificial crystalline lenses are in subluxation, central restoration of the crystalline lens capsular bag can be achieved, stable support is provided, conditions are provided for crystalline lens extraction and smooth implantation of the artificial crystalline lenses, and centering and stability of the artificial crystalline lenses in eyes are guaranteed. The lens capsule bag draw hook can be implanted into the eye through a small incision, so that larger corneal astigmatism is avoided. The prefabricated suture simplifies the operation steps, is simple to operate, and can reduce complications such as intraocular hemorrhage, retinal detachment and the like related to the operation. The lens capsule retractor has high biocompatibility, is resistant to biodegradation, does not need replacement and has good safety.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A preformed suture lens capsular bag retractor is characterized by comprising a needle head, a suture and a capsular bag retractor complex;
the bag-shaped drag hook complex is provided with a tension section and a plurality of drag hooks, the tension section is arc-shaped, the tail end of the tension section is provided with a positioning hole, the drag hooks are L-shaped and are provided with a first end part and a second end part, the first end parts of the plurality of drag hooks are connected with the tension section, and the second end parts of two adjacent drag hooks are combined and are connected with one end of the suture;
the other end of the suture is connected with the needle head.
2. A preformed suture capsular bag retractor according to claim 1, wherein the suture and capsular bag retractor complex are of the same material.
3. A pre-stitched capsular bag retractor according to claim 1 wherein the retractor is angled at between 0 ° and 90 °.
4. The pre-stitched capsular bag retractor of claim 1 wherein the first end of the retractor is perpendicularly attached to the tension section.
5. A preformed suture capsular bag retractor according to any of claims 1-4, wherein the retractor has a length of from 2mm to 5mm.
6. A pre-stitched capsular bag retractor according to claim 1 wherein the tension section has an arc length of 2mm to 5mm and a diameter of 0.1mm to 1mm.
7. The pre-stitched capsular bag retractor of claim 1 wherein the capsular bag retractor complex is integrally formed.
8. The preformed suture capsular bag retractor of claim 1 wherein the needle is a circular or triangular arcuate needle having an arcuate length of 0.5cm to 1.5cm.
9. The pre-stitched capsular bag retractor of claim 1 wherein the stitching is 3-0,4-0 or 5-0.
10. A pre-stitched capsular bag retractor according to claim 1 wherein the length of the stitch is from 20mm to 200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310117669.8A CN115957072A (en) | 2023-01-17 | 2023-01-17 | Lens capsular bag draw hook of prefabricated suture |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310117669.8A CN115957072A (en) | 2023-01-17 | 2023-01-17 | Lens capsular bag draw hook of prefabricated suture |
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| CN115957072A true CN115957072A (en) | 2023-04-14 |
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| CN202310117669.8A Pending CN115957072A (en) | 2023-01-17 | 2023-01-17 | Lens capsular bag draw hook of prefabricated suture |
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| CN (1) | CN115957072A (en) |
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- 2023-01-17 CN CN202310117669.8A patent/CN115957072A/en active Pending
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Address after: No. 592 Liqing Road, Liandu District, Lishui City, Zhejiang Province, 323000 Applicant after: Lishui Huaxia Eye Hospital Co.,Ltd. Applicant after: Shanghai Heping Eye Hospital Co.,Ltd. Address before: No. 592 Liqing Road, Liandu District, Lishui City, Zhejiang Province, 323000 Applicant before: Lishui Huaxia Ophthalmology Hospital Co.,Ltd. Applicant before: Shanghai Heping Eye Hospital Co.,Ltd. |