公开(公告)号：US11504273B2

公开(公告)日：2022-11-22

申请号：US16506500

申请日：2019-07-09

Applicant: Alcon Inc.

Inventor： Brian William McDonell ,  Salomon Valencia

IPC: A61F9/007 ,  A61B17/32 ,  A61B17/3207

Abstract: Provided herein are vitrectomy instruments and related systems and methods in which the vitrectomy instruments may include a forward needle stop and a cutter stop to reduce dimensional variation of a cutter of the vitrectomy instruments, allowing for a location of the port formed in a needle of the cutter to be positioned closer to a distal tip of the cutter. With the port located closer to a distal end of the cutter, the port is able to be positioned closer to the retina of an eye.

公开(公告)号：US20200281769A1

公开(公告)日：2020-09-10

申请号：US16835666

申请日：2020-03-31

Applicant: Alcon Inc.

Inventor： Jose Luis Lopez ,  Matthew Douglas McCawley ,  Brian William McDonell ,  Timothy C. Ryan ,  John R. Underwood ,  Salomon Valencia ,  Jack Robert Auld

IPC: A61F9/007

Abstract: In some embodiments, a vitrectomy probe may include an inner cutting tube reciprocating in an outer tube. The outer tube includes a side port and the inner tube includes a distal cutting port, and, in some embodiments, an additional side port. In some embodiments, the inner tube may also include a flat upper edge that cuts across the outer tube side port. In some embodiments, a diaphragm drives the inner tube and may have an open-stroke side with a lower hardness material than a closed-stroke side. In some embodiments, an aspiration tube coupled to the vitrectomy probe may include a first aspiration tubing and a second aspiration tubing with a lower hardness than the first aspiration tubing. In some embodiments, the vitrectomy probe may be coupled to pneumatic tubing that is stepped or tapered.