CAPSULOTOMY DEVICE AND METHOD USING ELECTROMAGNETIC INDUCTION HEATING

• US 20120158130A1
• Filed: 12/16/2010
• Published: 06/21/2012
• Est. Priority Date: 12/16/2010
• Status: Active Grant

• Current Assignee: Bausch & Lomb Incorporated (Bausch Health Cos., Inc.)
• Original Assignee: Bausch & Lomb Incorporated (Bausch Health Cos., Inc.)
• Inventors: Moradian, Ala, Gruber, Joseph
• Granted Patent: US 8,591,577 B2
• Time in Patent Office: Days
• US Class Current: 623/4.1
• CPC Class Codes: A61F 9/00754 for cutting or perforating the anterior lens capsule, e.g. capsulotomes

Abstract

A capsulotomy device for use in an eye having a capsular bag, comprising a conductive, primary coil capable of generating magnetic field lines and a conductive, secondary coil configured to permit insertion through an incision having a diameter of 3 mm or less, and placement on the capsular bag. When the magnetic field lines are projected through the secondary coil, a current is generated within the secondary coil.

Claims

1. A capsulotomy device for use in an eye having a capsular bag, comprising:

a conductive, primary coil capable of generating magnetic field lines; and

a conductive, secondary coil configured to permit insertion through an incision having a diameter of 3 mm or less, and placement on the capsular bag,

whereby when the magnetic field lines are projected through the secondary coil a current is generated therein.

2. The device of claim 1, wherein the secondary coil comprises a closed loop.

3. The device of claim 1, wherein the secondary coil has a magnetic permeability that is greater than the magnetic permeability of water.

4. The device of claim 1, wherein the secondary coil is configured to form a circular burn trace.

5. The device of claim 1, wherein the secondary coil comprises at least one of nitinol, stainless steel and plastic.

6. The device of claim 1, wherein secondary coil is coupled to a handle.

7. The device of claim 1, wherein the secondary coil is disposed in a syringe-type injector.

8. The device of claim 1, wherein the primary coil constitutes one of a plurality of coils each configured to generate the magnetic field lines.

9. A method of forming a capsulotomy, comprising:

locating a conductive coil in contact with a capsular bag of an eye;

projecting magnetic field lines through the conductive coil that are projected from a source located outside of the eye to form a burn trace on the capsular bag; and

tearing the capsular bag along the burn trace to form a rhexis.

10. The method of claim 9, further comprising, prior to the step of locating the conductive coil, folding the coil substantially in half and, while the coil is so folded, inserting the coil into the eye through an incision in the eye.