US 2019/0314201 A1 · VITRECTOMY INSTRUMENT WITH MULTIPLE ROTATING CUTTING EDGES

Abstract

Provided herein are vitrectomy instruments and related systems and methods in which example vitrectomy instruments have multiple rotating cutting edges for severing vitreous fibers. An example vitrectomy instrument may include a handle; an outer tube; and an inner tube configured to be rotated within the outer tube in multiple oscillating rotational cycles. The outer tube may include a port disposed at a distal end thereof. The inner tube may include at least first and second forward cutting edges, so that rotation in a first rotational direction results in both the first and second forward cutting edges cutting vitreous fibers drawn into the port. The inner tube may also include one or more backward cutting edges, so that rotation in a second rotational direction results in one or more backward cutting edges cutting vitreous fibers drawn into the port. Additional forward and/or backward cutting edges may be provided.

Claims20

Dependent claims

A vitrectomy instrument comprising:

a handle;
an outer tube comprising:
a proximal end;
a distal end;
and
a port formed in the outer tube at the distal end, the outer tube connected to the handle at the proximal end of the outer tube;
and
an inner tube located inside of the outer tube and configured to be rotated within the outer tube in both a first rotational direction from a first position to a second position and a second rotational direction from the second position to the first position, the second rotational direction being opposite to the first rotational direction, the inner tube comprising:
a distal end;
a cutting portion disposed at the distal end of the inner tube, the cutting portion comprising at least a first forward cutting edge and a second forward cutting edge that face in the first rotational direction such that the first forward cutting edge and the second forward cutting edge, in conjunction with the port, are configured to perform a cutting action to cut material extending through the port when the inner tube is rotated in the first rotational direction from the first position to the second position.

7 more elements

A system for performing ophthalmic surgical procedures comprising:

(i) vitrectomy instrument comprising:
a handle;
an outer tube comprising:
a proximal end;
a distal end;
and
a port formed in the outer tube at the distal end, the outer tube connected to the handle at the proximal end of the outer tube;
and
an inner tube located inside of the outer tube and configured to be rotated within the outer tube both in a first rotational direction from a first position to a second position and a second rotational direction from the second position to the first position, the second rotational direction being opposite to the first rotational direction, the inner tube comprising:
a distal end;
a cutting portion disposed at the distal end of the inner tube, the cutting portion comprising at least a first forward cutting edge and a second forward cutting edge that face in the first rotational direction, such that the first forward cutting edge and the second forward cutting edge, in conjunction with the port, are configured to perform a cutting action to cut material extending through the port when the inner tube is rotated in the first rotational direction from the first position to the second position;
(ii) a surgical console;
and
(iii) at least one connection line configured for connecting the vitrectomy instrument to the surgical console.

11 more elements

A method of performing an ophthalmic surgical procedure comprising:

(i) using a vitrectomy instrument comprising:
a handle;
an outer tube comprising:
a proximal end;
a distal end;
and
a port formed in the outer tube at the distal end, the outer tube connected to the handle at the proximal end of the outer tube;
and
an inner tube located inside of the outer tube and configured to be rotated within the outer tube both in a first rotational direction from a first position to a second position and a second rotational direction from the second position to the first position, the second rotational direction being opposite to the first rotational direction, the inner tube comprising:
a distal end;
and
a cutting portion disposed at the distal end of the inner tube, the cutting portion comprising at least a first forward cutting edge and a second forward cutting edge that face in the first rotational direction;
(ii) inserting the outer tube into an eye with the port adjacent to vitreous fibers;
(iii) applying suction through the vitrectomy instrument in order to draw vitreous fibers into the port;
and
(iv) rotating the inner tube within the outer tube in the first rotational direction from the first position to the second position to cause both the first forward cutting edge and the second forward cutting edge to cut vitreous fibers drawn into the port.

13 more elements

Dependencies are inferred from the claim text.

Vitrectomy instrument with multiple rotating cutting edges

Life of this patent

Vitrectomy instrument with multiple rotating cutting edges

Life of this patent

Abstract

Claims20