Single and/or dual (532 and/or 577) nm laser delivery system attached to an ophthalmic microscope
The present invention relates to a single and/or dual laser delivery system attached to an existing ophthalmic operating microscope, comprising of a single and/or dual wavelength laser unit [ 1 ]; and a delivery system [ 5 ]. The laser unit [ 1 ] comprises of a green laser module 532 nm [ 3 ] and a yellow laser module 577 nm [ 4 ] along with an aiming beam [ 7 ] 635 nm. The delivery system comprises of a right-angle prism [ 5 A]: X and Y Galvo assembly [ 5 B] and a focusing lens assembly [ 5 C]. The laser unit passes through a fiber optic cable [ 6 ] gets reflected using the right angle prism, gets deflected by the Galvo assembly, enters the focusing lens assembly and gets reflected by a folding mirror [ 5 D] and focused on human eye capsule. The system converges and focuses the laser wavelengths in line with the aiming beam to create a circular pattern to accomplish a pre-measured Capsulorhexis.
1 . An assembly of a single and/or dual wavelength laser delivery system [ 100 ] attached to a microscope, wherein said assembly comprises:
a single and/or dual wavelength laser unit [ 1 ];
a delivery system [ 5 ]; and
an ophthalmic operating microscope [ 2 ], wherein the ophthalmic operating microscope [ 2 ] is the microscope attached to the single and/or dual wavelength laser delivery system [ 100 ], and the ophthalmic operating microscope [ 2 ] comprises a binocular unit;
wherein the single and/or dual wavelength laser unit [ 1 ] comprises:
an aiming laser beam module configured for emitting an aiming laser beam having a wavelength of 635 nm;
a green laser module [ 3 ] combined with the aiming laser beam module, wherein the green laser module [ 3 ] and the aiming laser beam module configured for emitting a laser beam having a wavelength of 532 nm from the green laser module [ 3 ] along with the aiming laser beam having the wavelength of 635 nm from the aiming laser beam module; and
a yellow laser module [ 4 ] combined with the aiming laser beam module, wherein the yellow laser module [ 4 ] and the aiming laser beam module are configured for emitting a laser beam having a wavelength of 577 nm from the yellow laser module [ 4 ] along with the aiming laser beam having the wavelength of 635 nm from the aiming laser beam module;
wherein: (i) the green laser module [ 3 ] combined with the aiming laser beam module, or (ii) the yellow laser module [ 4 ] combined with the aiming laser beam module, is activated individually for creating a circular pattern with a precise circular cut of a human eye anterior capsule by:
emitting the laser beam having the wavelength of 532 nm from the green laser module [ 3 ] along with the aiming laser beam having the wavelength of 635 nm from the aiming laser beam module, such that the aiming laser beam having the wavelength of 635 nm is used to locate and guide a user of said assembly to aim the laser beam having the wavelength of 532 nm, or
emitting the laser beam having a wavelength of 577 nm from the yellow laser module [ 4 ] along with the aiming laser beam having the wavelength of 635 nm from the aiming laser beam module, such that the aiming laser beam having the wavelength of 635 nm is used to locate and guide the user of said assembly to aim the laser beam having the wavelength of 577 nm;
wherein each of the laser modules [ 3 and 4 ] comprises a low pass filter [ 3 A and 4 A] and a focusing lens [ 3 B and 4 B] respectively,
wherein the green laser module [ 3 ] and the yellow laser module [ 4 ] are connected to the delivery system [ 5 ] through a single fiber optic cable [ 6 ], wherein the single fiber optic cable [ 6 ] is interchanged between the green laser module [ 3 ] and the yellow laser module [ 4 ], as required by the user of said assembly;
wherein the delivery system [ 5 ] comprises a right-angle prism [ 5 A]; a X and Y Galvo assembly [ 5 B]; a focusing lens assembly [ 5 C]; and a folding mirror [ 5 D],
wherein the single and/or dual wavelength laser unit [ 1 ] emits said laser beams that pass through the fiber optic cable [ 6 ], such that said laser beams get reflected using the right angle prism [ 5 A], get deflected by the X and Y Galvo assembly [ 5 B], enter the focusing lens assembly [ 5 C], get reflected by a folding mirror [ 5 D], and get focused on the human eye anterior capsule perpendicularly at 90 degrees with reference to a horizontal plane of an eye ball,
wherein the folding mirror bends reflected said laser beams and emitted said laser beams to focus on the human eye anterior capsule perpendicularly at 90 degrees with reference to the horizontal plane of the eye ball,
wherein said laser delivery system [ 100 ] attached to the binocular unit of the microscope converges and focuses the laser beam having the wavelength of 532 nm and the laser beam having the wavelength of 577 nm in-line with the aiming laser beam having the wavelength of 635 nm to create a circular pattern to accomplish a pre-measured Capsulorhexis with a precise circular cut of the human eye anterior capsule.
2 . The assembly of claim 1 , wherein the low pass filters [ 3 A and 4 A] are mounted at an angle that transmits the laser beam having the wavelength of 532 nm or the laser beam having the wavelength of 577 nm and reflects the aiming laser beam having the wavelength of 635 nm.
3 . The assembly of claim 1 , wherein said laser beams from the fiber optic cable [ 6 ] pass through the focusing lens assembly [ 5 C] to get a required spot size of 100 microns to 300 microns.
4 . The assembly of claim 1 , wherein the folding mirror [ 5 D] is mounted in an angle of 45 degrees with a tolerance level of + or −2 degrees along the laser optical axis.
5 . The assembly of claim 1 , wherein the single and/or dual wavelength laser delivery system [ 100 ] has a pre-setting, such that the single and/or dual wavelength laser delivery system [ 100 ] converges and focuses the laser beam having the wavelength of 532 nm and the laser beam having the wavelength of 577 nm in-line with the aiming laser beam having the wavelength of 635 nm to create a circular pattern to accomplish a pre-measured Capsulorhexis with a precise circular cut of the human eye anterior capsule with a precise diameter of 3 mm to 6 mm in steps of 0.5 mm, due to the pre-setting.
6 . The assembly of claim 1 , wherein the laser unit [ 1 ] comprises a foot switch [ 1 A] to trigger the laser beam having the wavelength of 532 nm and/or the laser beam having the wavelength of 577 nm.