CN114617706B - Cornea stroma lens positioner - Google Patents
Cornea stroma lens positioner Download PDFInfo
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- CN114617706B CN114617706B CN202011361452.4A CN202011361452A CN114617706B CN 114617706 B CN114617706 B CN 114617706B CN 202011361452 A CN202011361452 A CN 202011361452A CN 114617706 B CN114617706 B CN 114617706B
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- locating
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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
- 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
- A61F9/0017—Introducing ophthalmic products into the ocular cavity or retaining products therein implantable in, or in contact with, the eye, e.g. ocular inserts
-
- 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
-
- 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
- A61F9/007—Methods or devices for eye surgery
-
- 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
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
- A61F2009/00861—Methods or devices for eye surgery using laser adapted for treatment at a particular location
- A61F2009/00872—Cornea
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Abstract
The application relates to a cornea matrix lens localizer, which belongs to the technical field of medical appliances. The cornea stroma lens locator is used for locating the position of the cornea stroma lens in the cornea stroma lens implantation operation, and comprises a handle, a locating ring, a connecting arm and a locating disc, wherein the connecting arm is a plurality of connecting arms; one end of the handle is fixedly connected with the outer wall of the positioning circular ring; the positioning disc is positioned at the inner side of the positioning circular ring, the positioning disc and the positioning circular ring are coaxial, and two ends of the connecting arm are fixedly connected with the positioning circular ring and the positioning disc respectively; the connecting arm is provided with a plurality of distance scales, and the distance scales are used for indicating the central position of the corneal stroma lens; the positioning disk is provided with a plurality of angle scales along the circumferential direction, and the angle scales are used for indicating the astigmatic axial position of the corneal stroma lens. The corneal stroma lens positioner provided by the embodiment of the application can conveniently position the central position and the astigmatic axis position of the corneal stroma lens in the corneal stroma lens implantation operation.
Description
Technical Field
The application relates to the technical field of medical appliances, in particular to a cornea stroma lens positioner.
Background
The corneal stroma lens implantation surgery can effectively treat high hyperopia.
In the related art, in the operation of implanting the stromal corneal lens, the stromal corneal lens needs to be implanted between the layers of the cornea by an operator, and the central position and the astigmatic axis position of the stromal corneal lens need to be adjusted by subjective observation of the operator in the implantation process.
However, since the central position and the astigmatic axis position of the stromal lens are adjusted by the operator based on subjective observation, the positioning accuracy of the stromal lens is poor.
Disclosure of Invention
The embodiment of the application provides a cornea stroma lens positioner which can solve the technical problems existing in related operations, and the cornea stroma lens positioner has the following technical scheme:
the embodiment of the application provides a cornea stroma lens positioner, which is used for positioning the position of a cornea stroma lens in a cornea stroma lens implantation operation, and comprises a handle, a positioning circular ring, a connecting arm and a positioning disc, wherein the connecting arm is a plurality of connecting arms;
one end of the handle is fixedly connected with the outer wall of the positioning circular ring;
the positioning disc is positioned at the inner side of the positioning circular ring, the positioning disc and the positioning circular ring are coaxial, and two ends of the connecting arm are fixedly connected with the positioning circular ring and the positioning disc respectively;
the connecting arm is provided with a plurality of distance scales, and the distance scales are used for indicating the central position of the corneal stroma lens;
the positioning disk is provided with a plurality of angle scales along the circumferential direction, and the angle scales are used for indicating the astigmatic axial position of the corneal stroma lens.
In one possible implementation, the connection position of the handle to the positioning ring corresponds to the position of the 90 ° scale of the plurality of angular scales.
In one possible implementation, the positioning ring has two horizontal marks that are respectively flush with the 0 ° and 180 ° scales of the plurality of angular scales.
In one possible implementation, the inner diameter of the positioning ring is greater than 9mm and less than 11mm.
In one possible implementation, the positioning ring has an outer diameter greater than 11mm and less than 13mm.
In one possible implementation, the height of the bottom surface of the positioning ring is greater than the height of the bottom surfaces of the connecting arm and the positioning disk.
In one possible implementation, the thickness of the positioning ring is greater than the thickness of the connecting arm and the positioning disk, and the top surface of the positioning ring is flush with the top surface of the connecting arm and the top surface of the positioning disk.
In one possible implementation, the plurality of connection arms are uniformly distributed along the circumference of the positioning disk, and the connection arms point to the central axes of the positioning ring and the positioning disk.
In one possible implementation, the positioning disk has an outer diameter greater than 4mm and less than 6mm.
In one possible implementation, the positioning disk has at least one angular digital identification;
the position of the at least one angle digital mark corresponds to the position of at least one angle scale in the plurality of angle scales and is used for indicating the angle value of the corresponding angle scale.
The technical scheme provided by the embodiment of the application at least comprises the following beneficial effects:
in the use process of the cornea stroma lens locator provided by the embodiment of the application, the coaxial center of the locating ring and the cornea stroma bed can be adjusted by observing the distance scales indicated by the edge of the cornea stroma bed on a plurality of connecting arms.
Then, the distance scales indicated by the edges of the stromal corneal lens on the plurality of connecting arms 3 are observed, and the stromal corneal lens is adjusted to be coaxial with the positioning ring, so that the stromal corneal lens is coaxial with the stromal corneal bed, and the center position of the stromal corneal lens is positioned.
Then, a reference angular position of the stromal corneal lens locator is determined. And then observing the astigmatism axis represented by the angle scale indicated by the astigmatism mark (pre-marked before operation) on the cornea stroma lens, rotating the cornea stroma lens until the astigmatism axis represented by the angle scale indicated by the astigmatism mark is the target astigmatism axis, and completing the astigmatism axis positioning of the cornea stroma lens.
Therefore, by adopting the cornea stroma lens locator provided by the embodiment of the application, the positioning precision of the cornea stroma lens can be effectively improved, and the effect of the cornea stroma lens implantation operation can be improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. In the drawings:
FIG. 1 is a schematic view of a corneal stroma lens locator in accordance with an embodiment of the application;
FIG. 2 is a partial schematic view of a corneal stroma lens locator in accordance with an embodiment of the application;
FIG. 3 is a partial schematic view of a corneal stroma lens locator in accordance with an embodiment of the application;
FIG. 4 is a partial schematic view of a corneal stroma lens locator in accordance with an embodiment of the application;
fig. 5 is a schematic illustration of the use of a corneal stroma lens locator in accordance with an embodiment of the application.
Description of the drawings
1. A handle;
11. an anti-skid thread;
2. positioning a circular ring;
21. a horizontal mark;
3. a connecting arm;
31. a distance scale;
4. positioning a disc;
41. an angle scale;
42. an angle digital mark;
a. a corneal flap;
b. a corneal stromal bed;
c. cornea;
d. a horizontal marking line;
e. a corneal stroma lens;
f. and (5) astigmatism marks.
Specific embodiments of the present application have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.
In the past, the surgical treatment method for high hyperopia is limited, and the excimer laser has more limitations after surgery, such as the problems of reduced optimal corrected vision, reduced visual quality, corneal dilatation and the like.
In recent years, more and more researches find that the corneal stromal lens implantation surgery can effectively treat high hyperopia, but a certain degree of astigmatism correction deviation and optical zone decentration exist after the surgery, so that the effectiveness and visual quality of correcting ametropia after the surgery are reduced. This limitation is due to the fact that the central position and the astigmatic axis of the implanted stromal lens can only be adjusted subjectively by the operator during the stromal lens implantation procedure.
In view of this, embodiments of the present application provide a corneal stroma lens locator capable of assisting an operator in locating the central position of a corneal stroma lens and the axial position of astigmatism during a corneal stroma lens implantation procedure.
As shown in fig. 1-3, the corneal stroma lens positioner comprises a handle 1, a positioning ring 2, a plurality of connecting arms 3 and a positioning disk 4. One end of the handle 1 is fixedly connected with the outer wall of the positioning circular ring 2. The positioning disc 4 is positioned at the inner side of the positioning circular ring 2, the positioning disc 4 and the positioning circular ring 2 are coaxial, and two ends of the connecting arm 3 are fixedly connected with the positioning circular ring 2 and the positioning disc 4 respectively. The connecting arm 3 has a plurality of distance scales 31, the distance scales 31 being used to indicate the central position of the stromal corneal lens. The positioning disk 4 has a plurality of angle scales 41 in the circumferential direction, the angle scales 41 being used to indicate the astigmatic axis position of the stromal corneal lens.
The corneal stroma lens positioner provided by the embodiment of the application can be used for positioning the central position of the corneal stroma lens and the astigmatic axial position of the corneal stroma lens.
The material of the cornea matrix lens locator is not limited in the embodiment of the application, and particularly, the cornea matrix lens locator can be repeatedly used under high temperature and high pressure sterilization, does not rust and is not easy to deform, and can be made of a stainless steel material.
In the use process of the cornea stroma lens locator provided by the embodiment of the application, the coaxial center of the locating ring 2 and the cornea stroma bed is adjusted by observing the distance scales 31 indicated by the edge of the cornea stroma bed on the plurality of connecting arms 3.
Then, the distance scales 31 indicated by the edges of the stromal corneal lens on the plurality of connecting arms 3 are observed, and the stromal corneal lens is adjusted to be coaxial with the positioning disk 4 (positioning ring 2), so that the stromal corneal lens is coaxial with the stromal corneal bed, and the center position of the stromal corneal lens is positioned.
Then, a reference angular position of the stromal corneal lens locator is determined. Then observing the astigmatism axis represented by the angle scale 41 indicated by the astigmatism mark (pre-marked before operation) on the cornea stroma lens, rotating the cornea stroma lens until the astigmatism axis represented by the angle scale 41 indicated by the astigmatism mark is the target astigmatism axis, and completing the astigmatism axis positioning of the cornea stroma lens.
In conclusion, the cornea stroma lens locator provided by the embodiment of the application can effectively improve the positioning precision of the cornea stroma lens and the effect of the cornea stroma lens implantation operation.
In order to better understand the corneal stroma lens locator provided by the embodiment of the present application, the handle 1, the locating ring 2, the connecting arm 3 and the locating disk 4 will be described below:
(1) The handle 1 will be described:
the handle 1 is used for holding by a surgical staff, as shown in fig. 1, the axis of the handle 1 is not perpendicular to the axis of the positioning circular ring 2, and an included angle formed between the axes is an obtuse angle. In the use state, one end of the handle 1 which is not connected with the positioning circular ring 2 is positioned above the top surface of the positioning circular ring 2.
The connection position between the handle 1 and the positioning ring 2 is not limited in the embodiment of the present application. In one possible implementation, as shown in fig. 2 and 3, the connection position of the handle 1 to the positioning ring 2 corresponds to the position of the 90 ° graduation among the plurality of angular graduations 41.
Of course, in another possible implementation, the connection position of the handle 1 and the positioning ring 2 may also correspond to the position of the 270 ° scale of the plurality of angle scales 41, which is not limited by the embodiment of the present application.
In addition, as shown in fig. 1, a grip portion of the handle 1 may further have an anti-slip thread 11, thereby increasing the grip force of the operator.
(2) The description of the positioning ring 2 is as follows:
to facilitate adjustment of the position of the positioning ring 2, the positioning ring 2 may have a horizontal marker 21. In adjusting the position of the positioning ring 2, the horizontal mark 21 on the positioning ring 2 can be adjusted to be flush with the horizontal mark line on the cornea c, thereby determining the reference angular position of the entire stromal corneal lens.
In one possible implementation, as shown in fig. 2 and 3, the positioning ring 2 may have two horizontal marks 21, the positions of the two horizontal marks 21 corresponding to the positions of the 0 ° and 180 ° scales of the plurality of angle scales 41, respectively.
When the corneal stroma lens locator is used, the two horizontal marks 21 are aligned with the two horizontal mark lines d on the cornea c, respectively, thereby locating the reference angular position of the corneal stroma lens on the cornea c.
In one possible implementation, the inner diameter of the positioning ring 2 is greater than 9mm and less than 11mm.
The inner diameter of the positioning circular ring 2 is designed to be larger than 9mm and smaller than 11mm, so that the edge of the cornea stroma bed b is exposed conveniently.
In one possible implementation, the outer diameter of the positioning ring 2 is greater than 11mm and less than 13mm.
In one possible implementation, the height of the bottom surface of the positioning ring 2 is greater than the height of the bottom surfaces of the connecting arms 3 and the positioning disk 4. Thus, as shown in fig. 4, a receiving space for receiving the stromal lens is formed between the inner side surface of the positioning ring 2, the bottom surface of the connecting arm 3 and the bottom surface of the positioning disk 4, so that the existence of the stromal lens does not affect the placement of the stromal lens positioner, and the surgeon can fine-tune the stromal lens in the gap between the positioning ring 2 and the positioning disk 4 to determine the central position and the astigmatic axis position of the stromal lens.
In order to form the above-mentioned accommodation space, in a possible implementation, the thickness of the positioning ring 2 is greater than the thickness of the connecting arm 3 and the positioning disk 4, and the top surface of the positioning ring 2 is flush with the top surface of the connecting arm 3 and the top surface of the positioning disk 4.
Illustratively, the thickness of the positioning ring 2 may be 1mm and the thickness of the connecting arm 3 and the positioning disc 4 may be 0.5mm. An accommodating space with the height of 0.5mm is formed between the bottom surfaces of the connecting arm 3 and the positioning disc 4 and the side surface of the positioning circular ring 2. When using the stromal corneal lens locator, a stromal corneal lens may be placed in the receiving space.
(3) The connecting arm 3 will be described:
in one possible implementation, the plurality of connection arms 3 are uniformly distributed along the circumference of the positioning disk 4, and the plurality of connection arms 3 are all directed toward the central axes of the positioning disk 4 and the positioning ring 2.
Illustratively, the number of the connection arms 3 is 4, and the 4 connection arms 3 correspond to the 0 ° scale, the 90 ° scale, the 180 ° scale, and the 270 ° scale, respectively, of the plurality of angle scales 41.
The length of the connecting arm 3 is not limited in the embodiment of the present application, and in practical application, the length of the connecting arm 3 is determined by the inner diameter of the positioning ring 2 and the outer diameter of the positioning disc 4. The length of the connecting arm 3 is, for example, 2.5mm.
The number and distance of the distance scales 31 on the connection arm 3 are not limited in the embodiment of the present application. Illustratively, the distance scales 31 are perpendicular to the axis of the connecting arm 3, and the distance between two adjacent distance scales 31 on the connecting arm 3 is 0.25mm.
The thickness of the connecting arm 3 may be 0.5mm.
(4) The positioning disk 4 is explained:
in one possible implementation, the plurality of angular graduations 41 on the positioning disk 4 may be evenly distributed along the circumference of the positioning disk 4 and on the top surface of the positioning disk 4.
The number of the angle scales 41 in the embodiment of the present application is not particularly limited, and illustratively, the positioning disc 4 has 72 angle scales 41, and the angle between every two angle scales 41 is 5 °.
In order to facilitate the observation of each angle scale 41, in one possible implementation, as shown in fig. 2, the lengths of two adjacent angle scales 41 are different, and the long angle scales and the short angle scales are distributed at intervals, so that the operator can recognize the angle scales in the operation.
In another possible implementation, as shown in fig. 3, the plurality of angle scales 31 includes a short angle scale, a medium and long angle scale, and the long angle scale corresponds to an angle distribution of 0 °, 30 °, 60 °, 90 °, 120 °, 150 °, 180 °, 210 °, 240 °, 270 °, 300 °, 330 °, and 360 °. Three short angle scales and two medium and long angle scales are uniformly distributed between every two long angle scales. By setting the angle scales with three lengths, the operator can recognize the angle scales in the operation more conveniently.
In one possible implementation, the outer diameter of the positioning disk 4 is greater than 4mm and less than 6mm.
The outer diameter of the positioning disk 4 may be, for example, 5mm.
In practice, the diameter of the stromal corneal lens is typically 6mm-6.5mm, so that by setting the outer diameter of the positioning disk 4 to be greater than 4mm and less than 6mm so that the positioning disk 4 does not completely block the stromal corneal lens, the edge of the stromal corneal lens can be exposed, and thus, the center position of the stromal corneal lens can be adjusted by observing the distance scales 31 indicated by the edge of the stromal corneal lens on the plurality of connecting arms 3.
In one possible implementation, the positioning disk 4 has at least one angular digital marking 42. The position of the at least one angle numerical indicator 42 corresponds to the position of at least one angle scale 41 of the plurality of angle scales 41 for indicating the angle value of the corresponding angle scale 41.
Illustratively, the number of the angle digital marks 42 may be 4, namely, 0 ° mark, 90 ° mark, 180 ° mark and 270 ° mark, and the 4 angle digital marks 42 are uniformly distributed and respectively correspond to the 0 ° scale, the 90 ° scale, the 180 ° scale and the 270 ° scale in the angle scale 41.
The thickness of the positioning disk 4 may be 0.5mm.
Next, a more specific stromal corneal lens locator is provided.
The embodiment of the application provides a cornea stroma lens locator which comprises a handle 1, a locating circular ring 2, 4 connecting arms 3 and a locating disc 4.
One end of the handle 1 is fixedly connected with the outer wall of the positioning circular ring 2, and the connection position corresponds to the 90 degree scale (or 270 degree scale) on the positioning disc 4. The axis of the handle 1 is not perpendicular to the axis of the positioning ring 2, and one end of the handle 1 away from the positioning ring 2 is positioned above the upper surface of the positioning ring 2. The grip portion of the handle 1 is provided with an anti-slip thread 11.
Two horizontal marks 21 are arranged on the positioning circular ring 2, and the positions of the two horizontal marks 21 respectively correspond to the 0 degree scale and the 180 reading scale on the positioning circular disc 4. The outer diameter of the positioning ring 2 is 12mm, the inner diameter is 10mm, and the thickness is 1mm.
The number of the connecting arms 3 is 4, the connecting arms 3 are uniformly distributed along the circumferential direction of the positioning disc 4, the length of the connecting arms 3 is 2.5mm, the thickness of the connecting arms is 0.5mm, and the distance between every two adjacent distance scales 31 on the connecting arms 3 is 0.25mm.
The positioning disc 4 is uniformly distributed with 72 angle scales 41 along the circumferential direction, and 4 angle digital marks 42 are respectively 0 degree mark, 90 degree mark, 180 degree mark and 270 degree mark on the disc surface of the positioning disc 4. The positioning disk 4 has a diameter of 5mm and a thickness of 0.5mm.
The use of the corneal stromal lens locator provided in accordance with an embodiment of the present application in a corneal stromal lens implantation procedure is illustrated in conjunction with fig. 5 as follows:
first, the operator makes a corneal flap a of 9mm diameter during surgery centered on the corneal vertex such that cornea c exposes corneal stroma bed b, which is also 9mm in diameter. The stromal corneal lens e with the astigmatism mark f is placed on the surface of the stromal corneal bed b.
Specifically, the operator uses a laser to cut a circular pedicel flap a in the cornea c (flap a is not fully separated) and lifts the flap a open exposing the stromal bed b. The operator then places the corneal stromal lens e on the surface of the corneal stromal bed b. Wherein, the cornea stroma lens e is provided with an astigmatism mark f, and the target axis position of the cornea stroma lens e is known in advance, and a horizontal mark line d is marked in the cornea c in advance.
Then, the position of the corneal stroma lens e is adjusted by using the corneal stroma lens locator provided by the embodiment of the present application, and the adjustment process may include the following steps:
in a first step, a corneal stroma lens locator is placed over the corneal stroma lens e.
Second, the corneal stroma lens positioner is adjusted to be concentric with the corneal stroma bed b according to the distance scale 31 on the connecting arm 3 of the corneal stroma lens positioner.
Specifically, the position of the stromal corneal lens locator is adjusted until the distance scale 31 indicated by the edge of the stromal corneal bed b on the plurality of connecting arms 3 is the same, and the stromal corneal lens locator is coaxial with the stromal corneal bed b.
Third, the stromal corneal lens e is adjusted to the center of the stromal corneal bed b according to the distance scale 31 on the connecting arm 3.
Specifically, the position of the stromal corneal lens e is adjusted until the distance scale 31 indicated by the edge of the stromal corneal lens e on the plurality of connecting arms 3 is the same, and the stromal corneal lens e is coaxial with the stromal corneal lens locator. And since the corneal stromal lens locator is concentric with the corneal stromal bed b, the corneal stromal lens e is centered in the corneal stromal bed b.
Thus, the positioning of the center position of the stromal corneal lens e is completed.
Fourth, the corneal stroma lens positioner is rotated until the horizontal mark 21 of the positioning ring 2 is flush with the horizontal mark line d.
Fifth, the stromal corneal lens e is rotated to the target axial position according to the angle scale 41 on the positioning disk 4.
Specifically, the stromal corneal lens e is rotated until the axis represented by the angle scale 41 indicated by the astigmatism mark on the stromal corneal lens e is the target axis of the stromal corneal lens e.
Sixth, the positioning result is recorded by photographing in the operation.
In summary, embodiments of the present application provide a corneal stroma lens locator that can facilitate an operator to implant a corneal stroma lens into an optimal position of an operating eye of a patient, ensure effective correction of hyperopia and astigmatism after an operation, and reduce damage to visual quality.
In the present application, unless explicitly specified and limited otherwise, the terms "connected," "fixed" and the like are to be construed broadly and include, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements.
In embodiments of the present application, the term "plurality" refers to two or more, unless explicitly defined otherwise.
The foregoing description of the preferred embodiments of the present application is not intended to limit the application, but rather, the application is to be construed as limited to the appended claims.
Claims (7)
1. A corneal stroma lens positioner, characterized in that the corneal stroma lens positioner is used for positioning the position of a corneal stroma lens in a corneal stroma lens implantation operation, the corneal stroma lens positioner comprises a handle (1), a positioning circular ring (2), a connecting arm (3) and a positioning disc (4), and the connecting arm (3) is a plurality of;
one end of the handle (1) is fixedly connected with the outer wall of the positioning circular ring (2);
the positioning disc (4) is positioned at the inner side of the positioning circular ring (2), the positioning disc (4) and the positioning circular ring (2) are coaxial, and two ends of the connecting arm (3) are fixedly connected with the inner side surface of the positioning circular ring (2) and the outer side surface of the positioning disc (4) respectively;
the connecting arm (3) has a plurality of distance scales (31), the distance scales (31) being used for indicating the central position of the corneal stroma lens;
the positioning disc (4) is provided with a plurality of angle scales (41) and at least one angle digital mark (42) along the circumferential direction, the angle scales (41) are used for indicating the astigmatic axial position of the corneal stroma lens, and the position of the at least one angle digital mark (42) corresponds to the position of at least one angle scale (41) in the plurality of angle scales (41) and is used for indicating the angle value of the corresponding angle scale (41);
the utility model discloses a cornea matrix lens, including the base plate lens, the locating ring (2), connecting arm (3), locating disc (4) and operating personnel, the top surface of locating ring (2) with the top surface of connecting arm (3) the top surface of locating disc (4) is parallel and level, the thickness of locating ring (2) is 1mm, the thickness of connecting arm (3) with the thickness of locating disc (4) is 0.5mm, form between the medial surface of locating ring (2), the bottom surface of connecting arm (3) with the bottom surface of locating disc (4) is used for holding the accommodation space of cornea matrix lens, accommodation space's effect is so that the existence of cornea matrix lens does not influence the placing of cornea matrix lens locator, also be convenient for the operating personnel to finely tune cornea matrix lens in the accommodation space to confirm the central point of cornea matrix lens puts and astigmatism axium, accommodation space's height is 0.5mm.
2. The stromal corneal lens locator according to claim 1, characterized in that the connection position of the handle (1) with the locating ring (2) corresponds to the position of the 90 ° graduation of the plurality of angular graduations (41).
3. The stromal corneal lens locator according to claim 1, wherein the locating ring (2) has two horizontal marks (21), the two horizontal marks (21) being flush with the 0 ° and 180 ° graduations of the plurality of angular graduations (41), respectively.
4. A corneal stromal lens locator according to any of claims 1-3, wherein the inner diameter of the locating ring (2) is greater than 9mm and less than 11mm.
5. A corneal stromal lens locator according to any of claims 1-3, wherein the outer diameter of the locating ring (2) is greater than 11mm and less than 13mm.
6. A stromal corneal lens locator according to any of claims 1-3, characterized in that a plurality of the connecting arms (3) are evenly distributed along the circumference of the locating disc (4), and that the connecting arms (3) are directed towards the central axis of the locating ring (2), the locating disc (4).
7. A stromal corneal lens locator according to any of claims 1-3, characterized in that the outer diameter of the locating disc (4) is greater than 4mm and less than 6mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011361452.4A CN114617706B (en) | 2020-11-27 | 2020-11-27 | Cornea stroma lens positioner |
| PCT/CN2021/133693 WO2022111654A1 (en) | 2020-11-27 | 2021-11-26 | Corneal stroma lens positioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011361452.4A CN114617706B (en) | 2020-11-27 | 2020-11-27 | Cornea stroma lens positioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114617706A CN114617706A (en) | 2022-06-14 |
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| CN2820146Y (en) * | 2005-08-18 | 2006-09-27 | 赛自金 | Analogue pupilla positioner for ophthalmogic cornia operation |
| CN102389289A (en) * | 2011-06-30 | 2012-03-28 | 孙晓东 | Handheld experimental animal corneal contact lens |
| CN203555882U (en) * | 2013-09-30 | 2014-04-23 | 广州军区广州总医院 | Cornea marker suitable for corneal transplantation operation |
| CN109528390A (en) * | 2019-01-17 | 2019-03-29 | 邓明辉 | Pouch centralized positioning capsulorhexis auxiliary device |
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| CN111870394A (en) * | 2020-07-23 | 2020-11-03 | 温州医科大学附属眼视光医院 | Positioner for artificial lens fixing operation |
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| WO2022111654A1 (en) | 2022-06-02 |
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