Sclerotomy adapter

• US 20070106301A1
• Filed: 11/09/2005
• Published: 05/10/2007
• Est. Priority Date: 11/09/2005
• Status: Abandoned Application

• Current Assignee: Alcon Incorporated
• Original Assignee: Alcon Incorporated
• Inventors: Charles, Steven, Hickingbotham, Dyson
• Application Number:
  US11/270,398
• Publication Number:
  US 20070106301A1
• Time in Patent Office: Days
• US Class Current: 606/107
• CPC Class Codes: A61B 17/3421 Cannulas
• CPC Class Codes: A61F 9/007 Methods or devices for eye surgery
• CPC Class Codes: A61F 9/00736 Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments A61F9/008 takes precedence

Abstract

A thin walled, hubbed cannula with an exterior diameter of approximately that of a 20 gauge surgical instrument and in interior bore having a diameter that is slightly larger than a 23 gauge or 25 gauge surgical instrument. The scleral contact surface of the hub of the adapter also can be rounded to provide a pivot point for the surgical instrument shaft, thereby reducing bending forces on the relatively thin shaft of the instrument.

Claims

1. A sclerotomy adapter, comprising:

a) a hub; and

b) a cannula connected to the hub, the cannula having an outer diameter that is approximately the same as a 20 gauge surgical instrument and an inner diameter that is slightly larger than a 23 gauge or 25 gauge surgical instrument.

2. The adapter of claim 1 further comprising a rounded shoulder on the hub.

3. The adapter of claim 1 further comprising a round tip on the cannula.

4. The adapter of claim 1 wherein the outer diameter is between 0.034 inches and 0.038 inches.