CN114515223A - Laser ophthalmology equipment - Google Patents
Laser ophthalmology equipment Download PDFInfo
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- CN114515223A CN114515223A CN202110093763.5A CN202110093763A CN114515223A CN 114515223 A CN114515223 A CN 114515223A CN 202110093763 A CN202110093763 A CN 202110093763A CN 114515223 A CN114515223 A CN 114515223A
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- 230000004044 response Effects 0.000 claims description 2
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- 210000004087 cornea Anatomy 0.000 description 9
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- 238000000034 method Methods 0.000 description 5
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- 210000002919 epithelial cell Anatomy 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 210000001747 pupil Anatomy 0.000 description 2
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- 108010035532 Collagen Proteins 0.000 description 1
- 208000010412 Glaucoma Diseases 0.000 description 1
- -1 Neodymium-Yttrium Aluminum Chemical compound 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 229920001436 collagen Polymers 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
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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
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G13/00—Operating tables; Auxiliary appliances therefor
- A61G13/10—Parts, details or accessories
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Abstract
The invention relates to the field of medical equipment, and discloses laser ophthalmological equipment, which comprises a first cabinet; a second cabinet provided separately from the first cabinet; a laser light source which is arranged in the first cabinet and generates a laser beam; the positioning device is arranged on the second cabinet and used for positioning the position of the eyes of the patient; a laser scanning applicator disposed on the second housing and moved to align the eye based on the positioning result; the driving device is arranged in the second cabinet and respectively drives the positioning device and the laser scanning application device to move; a light guide device which is arranged between the laser light source and the laser scanning application device and guides the laser beam to the laser scanning application device; and the controller is arranged in the first cabinet, is electrically connected with the laser light source, the driving device and the laser scanning application device and controls the laser light source, the driving device and the laser scanning application device. The laser scanning application device converts the laser beam from the light guide device into a roughly parallel laser beam and applies the roughly parallel laser beam to the eye of the patient, and the invention has convenient use and flexible operation.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to laser ophthalmic equipment.
Background
In the construction of the eye, approximately two thirds of the diopter is determined by the curvature of the anterior surface of the cornea. Thus, refractive errors of the eye can be significantly improved or eliminated by altering the shape of the cornea. The cornea is a thin film of a multilayer construction, with the anterior and posterior surfaces being nearly concentric, and having a central thickness of about 0.5 to 0.6mm, and an edge thickness of about 0.6 to 0.8 mm. The multilayer structure of the cornea is, in order from the anterior surface to the posterior surface, the epithelial cell layer (Epithelium), the anterior elastic layer (Bowman), the stromal layer (Stroma), the posterior elastic layer (Descemet), and the endothelial cell layer (Endothelium). The central thickness of the epithelial cell layer was about 70 μm and the thickness of the pre-elastic layer was about 12 μm. The stromal layer has a thickness of about 90% of the total corneal thickness (about 500 μm) and is composed mainly of regularly arranged collagen fibers and interconnecting corneal cells. The endothelial cell layer is composed of a layer of hexagonal flattened cells.
Based on the corneal architecture described above, because the stromal layer of the cornea is of sufficient thickness, for corrective purposes, the anterior portion of the stromal layer can be removed to change its contour, thereby changing the refractive power of the eye, while retaining a significant portion of the stromal tissue.
Various lasers are widely used in ophthalmic surgery, such as glaucoma, cataract, refractive surgery, and the like. For example, Ultraviolet (UV) lasers are used in refractive surgery (or corneal reshaping). Examples of the ultraviolet laser include 193nm excimer laser, and Neodymium-Yttrium Aluminum Garnet (Nd-YAG laser) of the fifth harmonic (213nm) and the like. In particular, these uv lasers are widely used in laser refractive keratomileusis (PRK), laser in situ lamellar keratoplasty (LASIK), etc., which all use a laser to cut corneal tissue to change its curvature, thereby achieving the effect of changing the diopter of the eye (correcting vision).
Laser ophthalmic devices currently on the market for performing LASIK are of similar design, all of which align the visual axis of the patient's eye with the laser beam by moving the operating table on which the patient is positioned. Specifically, the patient lies on an operating table that can be minutely moved along XYZ axes, by which the patient (i.e., the surface of his cornea) is moved until the surface of the cornea reaches the focal point of a microscope in the laser ophthalmic apparatus, and then a laser beam transmission path is set.
In the laser ophthalmic apparatus, since the main cabinet provided with the laser light source is rather bulky and inconvenient to move, the laser beam is generally transmitted through the optical system such that the laser beam is turned in a downward direction under the microscope after passing through the optical system to align the optical axis of the microscope. During use of such laser eye instruments, the operating table on which the patient is positioned needs to be constantly moved in order to align the visual axis of the patient's eye with the laser beam. In such a case, the operating table is bulky, which tends to cause inconvenience in use for an operator (e.g., a doctor or a surgical assistant) and lack flexibility in operation.
In addition, in the conventional laser ophthalmic apparatus, as shown in fig. 1, when the laser beams L1 'to L3' are incident on the eye E of the patient, since the difference between the incident angles of the central and peripheral positions is large, it is necessary to give a corresponding optical compensation to avoid that the excessive difference between the incident angles adversely affects the performance of the laser ophthalmic surgery.
Disclosure of Invention
The invention aims to provide a laser ophthalmology device which has both convenience in use and flexibility in operation.
In order to achieve the purpose, the invention adopts the following technical scheme:
a laser ophthalmic apparatus, comprising:
a first cabinet;
a second cabinet provided separately from the first cabinet;
a laser light source disposed in the first cabinet and configured to generate a laser beam;
a positioning device disposed on the second cabinet and configured to position a position of an eye of a patient;
a laser scanning applicator disposed on the second cabinet and configured to be moved to align the patient's eye based on the positioning result of the positioning device;
a driving device disposed in the second cabinet and configured to drive the positioning device and the laser scanning application device to move along an X direction, a Y direction and/or a Z direction respectively;
a light directing device disposed between the laser light source and the laser scanning applicator and configured to direct a laser beam generated by the laser light source toward the laser scanning applicator; and
a controller disposed in the first cabinet and configured to electrically connect to and control the laser light source, the drive device, and the laser scanning applicator, wherein the laser scanning applicator is configured to apply the laser beam from the light directing device to the eye of the patient.
Optionally, the laser scanning applicator is further configured to convert the laser beam from the light directing device into a substantially parallel laser beam and apply the substantially parallel laser beam to the eye of the patient.
Optionally, the laser scanning applicator comprises:
a scanner;
a lens between the scanner and the light directing device, the lens disposed distal to an eye of the patient most distal to the laser scanning applicator and configured to pass a laser beam from the light directing device over the scanner after being converted into a substantially parallel laser beam.
Optionally, the laser scanning applicator comprises an eye tracking system and a scanner, the eye tracking system is configured to reposition the patient's eye, and the scanner is configured to fine-tune the center position of the scanner according to the repositioning result of the eye tracking system, so that the laser beam applied by the laser scanning applicator is aligned with the patient's eye in real time.
Optionally, the controller is further configured to control the eye tracking system and the scanner to enable the scanner to automatically fine-tune the center position of the scanner according to the re-positioning result of the eye tracking system.
Optionally, the first and second cabinets are configured to be separately movable on the ground.
Optionally, the light guide device includes a light guide module and a light guide arm, the light guide module is disposed in the first cabinet, and the light guide module is connected to the laser scanning application device through the light guide arm.
Optionally, the positioning device continuously positions the position of the patient's eye while the laser scanning applicator is moved into alignment with the patient's eye, thereby continuously adjusting the position of the laser scanning applicator.
Optionally, the positioning device comprises:
a positioning light source configured to generate a positioning light beam;
a microscope configured to position a position of an eye of a patient by the positioning beam.
Optionally, the laser scanning applicator is configured to be movable to a position a minimum distance of 3cm from the patient's eye.
Optionally, the method further comprises:
a human-machine interface coupled to the controller, the human-machine interface configured to input operating parameters to the controller and monitor operations; and
a switch configured to communicate a command to emit a laser beam to the laser light source through the controller in response to a user's operation after the operating parameter is input to the controller, causing the laser light source to emit a laser beam according to the operating parameter.
Optionally, the switch is a foot switch.
Optionally, the controller comprises:
the storage device is configured to store preset position information, and the controller is configured to control the driving device according to the preset position information so that the positioning device and the laser scanning application device respectively move to preset positions; and the laser scanning application device is moved to the position aligned with the eyes of the patient by the driving device according to the positioning result of the positioning device after being moved to the predetermined position according to the predetermined position information.
Optionally, the controller comprises:
a storage device configured to store preset information, the controller configured to control the laser scanning application device to apply the laser beam to the eye of the patient according to the preset information.
Optionally, the method further comprises:
a fine adjustment device configured to be manually operated according to the positioning result of the positioning device to control the driving device to drive the laser scanning application device to move so as to align the eyes of the patient.
The invention has the beneficial effects that:
compared with the traditional laser ophthalmic device which achieves the alignment between the two by moving the patient, the laser ophthalmic device provided by the invention achieves the alignment between the two by respectively arranging the components of the laser ophthalmic device in different cabinets and moving the laser scanning application device in the cabinet relative to the eye of the patient. In such a case, it is no longer necessary to move a bulky operating table (i.e. to move the patient), but rather only the laser scanning applicator arranged in one of the cabinets is moved relative to the patient. The laser eye equipment can provide convenience for an operator in use and improve the flexibility in operation in the process of performing laser eye surgery.
Drawings
FIG. 1 is a schematic view of a conventional non-parallel laser beam applied to a patient's eye;
FIG. 2 is a schematic perspective view of a laser ophthalmic device according to an embodiment of the present invention;
FIG. 3 is a perspective view of a laser ophthalmic apparatus of an embodiment of the present invention from another angle;
FIG. 4 is a block diagram of a laser ophthalmic apparatus according to an embodiment of the present invention;
FIG. 5 is a schematic view showing a travel path of a laser beam as it passes through a laser scanning applicator of a laser ophthalmic apparatus according to an embodiment of the present invention;
FIG. 6 is a schematic view of the present invention applied to a patient's eye with substantially parallel laser beams.
In the figure:
e-the eye; an L-laser beam; L1-L3-laser beam; l1 '-L3' -laser beam;
1-laser ophthalmic device; 2-a first cabinet; 3-a second cabinet; 4-a laser light source; 5-a positioning device; 7-a drive device; 8-a light directing device; 9-a controller;
6-laser scanning applicator; 60-an eye tracking system; 62-a scanner; 63-a lens; 64-a mirror;
80-a light guide module; 81-a light guide arm;
100-human-computer interaction interface; 200-a switch; 300-operating table; 400-joystick.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
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 "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply 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 of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
Fig. 2 to 4 show a laser ophthalmic apparatus 1 as an embodiment of the present invention. Fig. 2 and 3 are perspective views of the laser ophthalmic apparatus 1 according to the embodiment of the present invention viewed from two different angles, respectively, and fig. 4 is a block diagram of the laser ophthalmic apparatus 1 according to the embodiment of the present invention.
As shown in fig. 2 and 3, the laser ophthalmic apparatus 1 of the present invention includes a first cabinet 2 and a second cabinet 3 provided separately from the first cabinet 2. Preferably, in order to adjust the position of the laser ophthalmic apparatus 1 to meet the needs of the operator, the first cabinet 2 and the second cabinet 3 are both designed to be movable on the ground, for example, the first cabinet 2 and the second cabinet 3 are respectively provided with respective wheels so as to be movable on the ground. On the other hand, the maximum length (or width) of the first cabinet 2 and the second cabinet 3 is only 70cm, and the laser eye equipment 1 of the present invention is more advantageous for transportation because it can be smoothly entered into most elevators. It is also conceivable that the provision of the first cabinet 2 and the second cabinet 3 separately also facilitates flexible arrangement of the laser ophthalmic apparatus 1.
As shown in fig. 2 to 4, the first cabinet 2 is provided with a laser light source 4 and a controller 9, while the second cabinet 3 is provided with a positioning device 5, a laser scanning application device 6, and a driving device 7 configured to drive the positioning device 5 and the laser scanning application device 6 to be movable in the X direction, the Y direction, and the Z direction, respectively. It is further noted that the driving device 7 can be a linear rail driven by a motor or a robot arm driven by a motor and using multiple joints, but not limited to a linear rail driven by a motor or a robot arm; the positioning device 5 and the laser scanning application device 6 are respectively mounted on the linear slide or different robots (it should be understood that the driving manner of the driving device is well known to those skilled in the art, and the operation manner thereof will not be described in detail in the embodiment and the drawings).
The laser light source 4 is configured to generate a laser beam L, e.g., an excimer laser beam, by which a laser eye surgery, e.g., LASIK surgery, can be performed on the patient's eye E.
Furthermore, the laser ophthalmological apparatus 1 further includes a light guiding device 8, the light guiding device 8 being disposed between the laser light source 4 and the laser scanning application device 6, and being configured to guide the laser beam L from the laser light source 4 toward the laser scanning application device 6. Specifically, the light guide device 8 includes a light guide module 80 and a light guide arm 81, the light guide module 80 is disposed in the first cabinet 2, and the light guide module 80 in the first cabinet 2 is connected to the laser scanning application device 6 disposed on the second cabinet 3 through the light guide arm 81. In other words, the first cabinet 2 and the second cabinet 3 are connected to each other by the light guide arm 81 (which connects the light guide module 80 in the first cabinet 2 and the laser scanning application device 6 on the second cabinet 3).
The positioning device 5 is configured to move in the X direction, the Y direction, and the Z direction under the drive of the drive device 7 to position the position of the eye E of the patient. In an embodiment of the invention, the positioning device 5 comprises a microscope and a positioning light source (not shown) which generates a positioning light beam by which the microscope positions the position of the eye E of the patient.
The laser scanning application device 6 is configured to move in the X direction, the Y direction, and the Z direction under the drive of the drive device 7 based on the positioning result of the positioning device 5 to align and apply the laser beam L to the patient's eye E. The movement of the positioning device 5 and the laser scanning applicator 6 will be described in detail in the following description, and will not be described in detail here.
The controller 9 is configured to electrically connect and control the various components of the laser ophthalmic apparatus 1. In the laser ophthalmological apparatus 1 according to the present invention, the controller 9 electrically connects and controls the laser light source 4, the driving device 7, and the laser scanning application device 6.
Further, the controller 9 includes a storage device in which information related to the laser ophthalmic apparatus 1 required to perform the laser ophthalmic surgery is stored. For example, the related information includes preset information of the density of the laser beam L to be applied to the eye E of the patient, the path to be followed, and the like, and predetermined position information about the relative positions of the first cabinet 2, the second cabinet 3, and the operating table 300 after the laser ophthalmic apparatus 1 is installed and positioned, and the like. The predetermined position information may indicate an approximate range of positions of the patient's eye E when the patient lies on the operating table 300.
The controller 9 is configured to control the operations of the laser light source 4, the driving device 7, and the laser scanning application device 6 according to the related information.
Specifically, the controller 9 is configured to control the laser light source 4 to emit the laser beam L, control the driving device 7 to drive the positioning device 5 and the laser scanning application device 6 to move in the X direction, the Y direction, and the Z direction, respectively, according to the pre-stored predetermined position information, and control the laser scanning application device 6 to apply the laser beam L to the patient's eye E according to the pre-stored predetermined information.
In addition, the laser ophthalmology apparatus 1 according to the present invention further includes a human-machine interface 100 and a switch 200, wherein the human-machine interface 100 is a user interface, and the controller 9 is connected with the human-machine interface. In an embodiment in accordance with the present invention, as shown in fig. 2 and 3, the human-machine interface 100 includes a screen and a keyboard for the operator to input the relevant information required for performing the laser eye surgery into the storage device of the controller 9 and to monitor the operation of the laser eye surgery apparatus 1, such as the coarse positioning and the fine positioning of the laser scanning applicator 6. In addition, as shown in fig. 2-3, the switch 200 is preferably a foot switch, which can be operated by a user to send a command to make the laser source 4 emit the laser beam L through the controller 9. However, it should be understood by those skilled in the art that the present invention is not limited to the above-mentioned types of human-machine interface 100 and switch 200, and other types of human-machine interface 100 and switch 200 can be used as long as the above-mentioned functions are achieved.
Next, a process of operating the laser ophthalmic apparatus 1 of the embodiment of the present invention to perform the laser ophthalmic surgery will be described.
First, after the patient has laid on the operating table 300 (i.e. after the eye E of the patient has been in a fixed position), an operator (e.g. a doctor or a surgical assistant) can control the driving device 7 via the controller 9 via the human machine interface 100 according to the pre-determined position information stored in the controller 9, so that the driving device 7 drives the positioning device 5 to move to the pre-determined position. After the positioning device 5 is moved to this predetermined position, an operator (e.g., a doctor or a surgical assistant) can then position the position of the patient's eye E by means of the positioning device 5 (i.e., the microscope and the positioning light beam).
Then, after the positioning device 5 has completed positioning the patient's eye E, the driving device 7 drives the laser scanning application device 6 to move to a predetermined position above the patient's eye E according to the predetermined position information pre-stored in the controller 9, similar to the driving of the positioning device 5 by the driving device 7 (this positioning can also be referred to as coarse positioning). In addition to being driven according to the pre-determined position information pre-stored in the controller 9, the laser scanning application device 6 can be further moved to a more precisely aligned position with the patient's eye E according to the positioning result of the positioning device 5 on the patient's eye E (this positioning can also be referred to as fine positioning). In particular, this fine adjustment positioning may be achieved by an operator manually operating a fine adjustment device (e.g., the joystick 400 shown in fig. 2 and 3) to control the drive device 7 to drive the laser scanning applicator 6 to move.
It should be noted that during the process that the laser scanning applicator 6 is moved into alignment with the patient's eye E based on the positioning result of the positioning device 5, the positioning device 5 will still continuously position the patient's eye E, thereby continuously adjusting the position of the laser scanning applicator 6 to maintain the positioning accuracy.
After the laser scanning applicator 6 completes the coarse positioning and the fine positioning, the user can operate the switch 200 to issue a command, which is transmitted to the laser source 4 through the controller 9, so that the laser source 4 emits a corresponding laser beam L, and the laser beam L is transmitted to the laser scanning applicator 6 through the light guide module 80 and the light guide arm 81, at this time, the controller 9 will control the laser scanning applicator 6 to apply the laser beam L to the eye E of the patient according to the preset information stored in the controller 9, so as to perform the laser eye surgery.
However, although the laser scanning applicator 6 is aligned with the patient's eye E on the operating table 300 after the coarse positioning and the fine positioning as described above, the patient's eye E may still be intentionally or unintentionally rotated during the laser eye surgery, so that the position thereof is shifted from the position at which the positioning device 5 is positioned, in which case, if the position of the laser beam L applied to the patient's eye E is not adjusted along with the shift of the position of the eye E, there may be a problem of distortion during the laser eye surgery.
Therefore, in the laser eye equipment 1 according to the present invention, the laser scanning applicator 6 preferably further comprises an eye tracking system 60 and a scanner 62 (see fig. 4), the eye tracking system 60 can instantly and constantly reposition (track) the position of the patient's eye E (e.g., pupil), and the scanner 62 can constantly fine-tune its center position according to the repositioning result of the eye tracking system 60, so that the laser beam L applied by the laser scanning applicator 6 can be more precisely aligned with the patient's eye E.
Specifically, after the laser scanning applicator 6 has been moved to be aligned with the patient's eye E, during the application of the laser beam L by the laser scanning applicator 6 to the patient's eye E, the eye tracking system 60 of the laser scanning applicator 6 instantly and constantly relocates (tracks) the position of the patient's eye E (e.g., pupil) under the control of the controller 9, and, based on the result of the relocation of the eye tracking system 60, the controller 9 controls the scanner 62 of the laser scanning applicator 6 to cause the scanner 62 to constantly fine-tune its center position to compensate for the shift in the position of the eye E caused by the intentional or unintentional movement of the patient's eye E, to more accurately and instantly align the laser beam L applied by the laser scanning applicator 6 with the patient's eye E, and thereby accurately align the patient's eye E (e.g., cornea) for laser eye surgery, e.g., LASIK surgery. In this way, the problem of distortion of the laser-cut cornea due to the displacement of the position E of the patient's eye during the laser eye surgery can be surely prevented.
Next, the travel path of the laser beam L when passing through the laser scanning applicator 6 is explained with reference to fig. 5.
As shown in fig. 5, the laser scanning applicator 6 of the present invention preferably further comprises a lens 63 and a mirror 64, wherein the lens 63 is disposed at the far side of the laser scanning applicator 6 from the eye E of the patient between the scanner 62 and the light guide arm 81, and is configured to convert the laser beam L from the light guide arm 81 of the light guide device 8 (fig. 4) into a substantially parallel laser beam (see laser beams L1 to L3 in fig. 6) and then pass through the scanner 62 and the mirror 64, and the substantially parallel laser beams L1 to L3 are then applied toward the eye E of the patient. Although a parallel laser beam can be obtained theoretically, in actual use, it is difficult to achieve the level of theoretical parallelism due to the influence of errors of various factors such as the accuracy of the apparatus, and therefore, the substantially parallel is a clear expression and there is no problem of unclear definition.
As shown in fig. 1 and 6, compared to the conventional laser ophthalmic apparatus which does not convert the laser beam L into a substantially parallel laser beam (see the laser beams L1 'to L3' in fig. 1), it is necessary to give corresponding optical compensation to the laser beams L1 'to L3' incident to the patient's eye E at different incident angles (particularly, to the laser beams L1' to L3 'incident to the central and peripheral positions of the patient's eye E with the largest difference in incident angle), so that the laser beams L1 'to L3' incident to the patient's eye E at different incident angles do not have too large difference in optical characteristics from each other, and to avoid the excessive difference from adversely affecting the performance of the laser ophthalmic surgery, the laser ophthalmic apparatus of the present invention converts the laser beam L into the substantially parallel laser beams L1 to L3 and applies the substantially parallel laser beams L1 to L3 (see fig. 6) to the patient's eye E, the adverse effects on the laser eye surgery caused by the differences between the laser beams L1 ' to L3 ' incident on the patient's eye E at different incident angles can be effectively avoided.
Furthermore, as shown in fig. 2 to 4, in the laser eye equipment 1 of the present invention, since the laser scanning applicator 6 can be independently driven to move to a desired position relative to the eye E of the patient, the laser scanning applicator 6 of the present invention can be operated or moved to a position closer to the eye E of the patient, for example, the laser scanning applicator 6 of the present invention can be preferably moved to a position at a distance of about 3cm from the eye E of the patient, compared to the conventional method of almost entirely moving the laser eye equipment relative to the eye E of the patient. In such a case, since the distance between the eye E of the patient and the laser scanning application device 6 applying the laser beam L is short, the interference of the laser beam L applied by the laser scanning application device 6 before reaching the eye E of the patient can be greatly reduced, and the accuracy of the laser eye surgery can be improved.
In summary, in the laser ophthalmic apparatus 1 of the present invention, since the laser beam L applied to the eye E of the patient is the substantially parallel laser beams L1-L3 (see fig. 6) converted by the laser scanning application device 6, the laser ophthalmic apparatus of the present invention can effectively avoid the adverse effect caused by the difference between the laser beams L1 'to L3' (see fig. 1) incident to the eye of the patient due to different incident angles, without giving extra optical compensation, and thus can achieve the advantageous technical effect of improving the use efficiency of the laser ophthalmic apparatus 1.
Furthermore, in the laser ophthalmic apparatus 1 of the present invention, since the laser scanning applicator 6 for applying the laser beam L to the eye E of the patient can be independently driven to move relative to the eye E of the patient and can be moved to a position closer to the eye E of the patient, the laser ophthalmic apparatus 1 of the present invention can greatly reduce the interference of the laser beam L applied by the laser scanning applicator 6 before reaching the eye E of the patient, and thus can also achieve the advantageous technical effect of improving the precision of the laser ophthalmic surgery.
Finally, in the laser ophthalmic apparatus 1 of the present invention, since the alignment between the laser ophthalmic apparatus 1 (the laser scanning applicator 6) and the eye E of the patient is performed by moving the laser scanning applicator 6, rather than moving the patient relative to the laser ophthalmic apparatus, the operator (i.e., the doctor or the surgical assistant) only needs to move the laser scanning applicator 6 to the position aligned with the eye E of the patient by the driving device 7 during the operation of the laser ophthalmic apparatus 1 for the laser ophthalmic surgery, without moving the relatively bulky operating table 300 on which the patient is located over and over again, which is convenient and flexible in operation, thereby enabling the laser ophthalmic surgery with higher accuracy.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (15)
1. A laser ophthalmic apparatus, comprising:
a first cabinet;
a second cabinet provided separately from the first cabinet;
a laser light source disposed in the first cabinet and configured to generate a laser beam;
a positioning device disposed on the second cabinet and configured to position a position of an eye of a patient;
a laser scanning applicator disposed on the second cabinet and configured to be moved to align the patient's eye based on the positioning result of the positioning device;
a driving device disposed in the second cabinet and configured to drive the positioning device and the laser scanning application device to move along an X direction, a Y direction and/or a Z direction respectively;
a light directing device disposed between the laser light source and the laser scanning applicator and configured to direct a laser beam generated by the laser light source toward the laser scanning applicator; and
a controller disposed in the first cabinet and configured to electrically connect to and control the laser light source, the drive device, and the laser scanning applicator, wherein the laser scanning applicator is configured to apply the laser beam from the light directing device to the eye of the patient.
2. The laser ophthalmic apparatus of claim 1 wherein the laser scanning applicator is further configured to convert the laser beam from the light directing device into a substantially parallel laser beam and apply the substantially parallel laser beam to the patient's eye.
3. The laser ophthalmic apparatus of claim 2 wherein the laser scanning applicator comprises:
a scanner;
a lens between the scanner and the light directing device, the lens disposed distal to an eye of the patient most distal to the laser scanning applicator and configured to pass a laser beam from the light directing device over the scanner after being converted into a substantially parallel laser beam.
4. The laser ophthalmic apparatus of claim 1 wherein the laser scanning applicator comprises an eye tracking system configured to reposition the patient's eye and a scanner configured to fine tune a center position of the scanner based on the repositioning of the eye tracking system to provide instantaneous alignment of the laser beam applied by the laser scanning applicator to the patient's eye.
5. The laser ophthalmic apparatus of claim 4 wherein the controller is further configured to control the eye tracking system and the scanner such that the scanner automatically fine-tunes the center position of the scanner based on the result of the repositioning of the eye tracking system.
6. The laser ophthalmic apparatus of claim 1 wherein the first cabinet and the second cabinet are configured to be separately movable on a ground surface.
7. The laser ophthalmic apparatus of claim 1, wherein the light guide device comprises a light guide module and a light guide arm, the light guide module being disposed in the first cabinet, the light guide module being connected to the laser scanning applicator via the light guide arm.
8. The laser ophthalmic apparatus of claim 1 wherein the positioning device continuously positions the position of the patient's eye while the laser scanning applicator is moved into alignment with the patient's eye to continuously adjust the position of the laser scanning applicator.
9. The laser ophthalmic apparatus of claim 1, wherein the positioning device comprises:
a positioning light source configured to generate a positioning light beam;
a microscope configured to position a position of an eye of a patient by the positioning beam.
10. The laser ophthalmic apparatus of claim 1 wherein the laser scanning applicator is configured to be movable to a position a minimum distance of 3cm from the patient's eye.
11. The laser ophthalmic apparatus of claim 1, further comprising:
a human-machine interface coupled to the controller, the human-machine interface configured to input operational parameters to the controller and monitor operations; and
a switch configured to communicate a command to emit a laser beam to the laser light source through the controller in response to a user's operation after the operating parameter is input to the controller, causing the laser light source to emit a laser beam in accordance with the operating parameter.
12. The laser ophthalmic device of claim 11 wherein the switch is a foot switch.
13. The laser ophthalmic apparatus of claim 1, wherein the controller comprises:
the storage device is configured to store preset position information, and the controller is configured to control the driving device according to the preset position information so that the positioning device and the laser scanning application device move to preset positions respectively; and the laser scanning application device is moved to the position aligned with the eyes of the patient by the driving device according to the positioning result of the positioning device after being moved to the predetermined position according to the predetermined position information.
14. The laser ophthalmic apparatus of claim 1, wherein the controller comprises:
a storage device configured to store preset information, the controller configured to control the laser scanning application device to apply the laser beam to the eye of the patient according to the preset information.
15. The laser ophthalmic apparatus of claim 1, further comprising:
a fine adjustment device configured to be manually operated according to the positioning result of the positioning device to control the driving device to drive the laser scanning application device to move so as to align the eyes of the patient.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW109140368A TWI758959B (en) | 2020-11-18 | 2020-11-18 | Ophthalmic laser apparatus |
| TW109140368 | 2020-11-18 |
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| Publication Number | Publication Date |
|---|---|
| CN114515223A true CN114515223A (en) | 2022-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110093763.5A Pending CN114515223A (en) | 2020-11-18 | 2021-01-22 | Laser ophthalmology equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114515223A (en) |
| TW (1) | TWI758959B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI784423B (en) * | 2021-02-26 | 2022-11-21 | 艾克夏醫療儀器股份有限公司 | Eye-abutting system of femtosecond laser ophthalmic equipment and eye-abutting base as well as eye-abutting ring mounted thereon |
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| JP3652951B2 (en) * | 2000-02-10 | 2005-05-25 | 株式会社ニデック | Ophthalmic equipment |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI758959B (en) | 2022-03-21 |
| TW202220630A (en) | 2022-06-01 |
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