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1. US20200306084 - DEVICE AND METHOD FOR FRACTURING AND REMOVING OCULAR LENSES

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[ EN ]

Claims

1. A device for fracturing and removing ocular lenses, wherein said device comprises:
a rotational screw;
a sleeve; and
a suction system;
wherein the rotational screw drill is housed in a sleeve.
2. The device for fracturing and removing ocular lenses according to claim 1, wherein the rotational screw drill has reversed conical propellers with an Archimedes Screw shape, wherein its diameter increases along its length towards the screw drill edge.
3. The device for fracturing and removing ocular lenses according to claim 1, wherein the sleeve comprises a rigid cylinder and a suction cup and the suction cup has a “bell” or funnel shape with an elliptical cross-section.
4. The device for fracturing and removing ocular lenses according to claim 1, wherein the device is directly and mechanically connected to probes, which provide the power, the irrigation of the balanced salt solution and hydraulic suction, wherein all of the above are controlled by a suitable control system.
5. A hand-piece which attaches to a device for fracturing and removing lens in a mechanical process.
6. The hand-piece according to claim 5 further comprising a lid, a chassis, a plunger mechanism, an extender shaft, and a motor.
7. The hand-piece according to claim 5, wherein the lid includes a hollow conic section, a hexagonal base, a threaded connector, a plurality of longitudinal blades and stiffener rings, wherein the hollow conic section is a cavity with varying diameters along its length and the distal end of the funnel, has a smaller cavity to rigidly support the sleeve for minimizing vibrations of the extender shaft and allowing the fragmented particles to pass therethrough.
8. The hand-piece according to claim 5, wherein the chassis contains a vacuum chamber, a triangle-shaped index finger support; a middle finger support, a main cylinder back and sliding rails, wherein the middle finger support has a conical shape, which comprises a hose connector, a thicker threaded wall, and a middle cavity.
9. The hand-piece according to claim 5, wherein the chassis provides support to the lid, the extender shaft, and the plunger.
10. The hand-piece according to claim 7, wherein the cylinder back supports the extended shaft and includes a bushing to reduce vibrations caused by the rotation of the shaft.
11. The hand-piece according to claim 8, wherein the hand-piece connects the hydraulic system via the hose connector and the probe and the hydraulic system comprises pumps and that are driven by a control system and the hydraulic system also comprises a reservoir and a waste container, wherein the reservoir contains the liquid reserve, feeds balanced salt solution through the pump and the irrigation system to the anterior chamber via an irrigation instrument tip and wherein the device removes particles and fluid through hand-piece by the pump which drags particles towards the waste container through the probe.
12. The hand-piece according to claim 7, wherein the sliding rails are the guides in contact with the plunger blades.
13. A method for fragmentation and removal of the ocular lens, the method comprising the following steps using the device according to claim 1:
i. irrigating the anterior chamber by means of the irrigation system;
ii. inserting the sleeve through the 12 meridian incision (second incision);
iii. capturing or fixing the lens to the suction cup by activating the hydraulic suction system through the sleeve;
iv. irrigating the anterior chamber in a synchronized manner between the hydraulic suction system and the irrigation system;
v. fracturing the lens or cataract by drilling the lens with the rotational screw drill;
vi. breaking the surface and the inner part of the lens in pieces with a suitable size;
vii. simultaneously or subsequently vacuuming the lens particles; and
vii. removing the device from the eye.