Ophthalmic surgical device for capsulotomy

摘要

A surgical device and procedure are provided for performing microsurgery, including a capsulotomy of a lens capsule of an eye. The device has an elastically deformable cutting element mounted within an elastomeric suction cup. The suction cup is attached to an arm for manipulating the device. The device can be inserted into the anterior chamber of the eye, through a corneal incision, to cut a piece from the anterior portion of the lens capsule of the eye. The device is secured against the lens capsule using suction applied by one or more suction elements. The device is then removed from the eye, with the cut piece of membrane retained within the device by suction.

主权项

1. A method of performing a capsulotomy of a lens capsule of an eye, the method comprising:
inserting a conductive heating, circular cutting element of a capsulotomy device through an incision in a cornea of the eye, the cutting element being mounted to an underside of a suction cup of the capsulotomy device and collapsible for insertion through the incision to access the lens capsule, the cutting element further designed to return to a pre-insertion shape following insertion into the eye through the incision; positioning the cutting element at the lens capsule; applying suction to the suction cup to secure the capsulotomy device to the lens capsule of the eye; and delivering one or more electrical pulses of energy to the cutting element for conductive heating of the cutting element to cut tissue of the lens capsule to allow removal from the eye of a patch of the tissue from the lens capsule, wherein a total duration of the one or more electrical pulses is 500 milliseconds or less.