Valved cannula assembly

Patent metadata

Field	Value
Publication number	US-12290281-B2
Application number	US-202217811144-A
Country	US
Kind code	B2
Filing date	Jul 7, 2022
Priority date	Jul 20, 2021
Publication date	May 6, 2025
Grant date	May 6, 2025

Abstract

Embodiments disclosed herein provide devices, systems, and methods for instrument exchanges during ophthalmic surgery. More particularly, the present disclosure relates to valved cannula assemblies and methods of use thereof. A valved cannula assembly includes a cannula having a head at a proximal end of the cannula and a hollow rod extending from the head to a distal end of the cannula. The valved cannula assembly includes a valved hub coupled to the head and including a septum having two or more curved flaps configured to provide an opening for an instrument.

First claim

What is claimed is:

1. A valved cannula assembly, comprising:
a cannula, comprising:
a head at a proximal end of the cannula; and
a hollow rod extending from the head to a distal end of the cannula; and

a valved hub coupled to the head and comprising a septum having two or more curved flaps configured to provide an opening for an instrument;
wherein a top face of the head contacts a downward facing annular seal disposed in the valved hub to form a seal between the cannula and the valved hub;
wherein the septum has a concave shape in relation to a top face of the valved hub;
wherein the septum is recessed from the top face of the valved hub by a distance of about 0.005 inches or greater;
wherein a wall of the hollow rod has a first thickness at the distal end of the cannula less than a second thickness of remaining portions of the hollow rod;
wherein the top face of the valved hub comprises a raised ring extending upward from the top face, and wherein the septum is recessed by a first distance from an upper edge of the raised ring greater than a second distance from the top face of the valved hub.

2. The valved cannula assembly of claim 1 , wherein the valved hub comprises:
a housing comprising a first color; and
a valve disposed in the housing and comprising a second color.

3. The valved cannula assembly of claim 1 , wherein the head of the cannula surrounds at least a portion of an outer surface of the valved hub.

Assignees

• Alcon Inc

Inventors

• Chon James Y
• Cicchella Joel
• Heng Robert Jeffrey
• Liao Grace Chuang
• Sinha Ashish

Classifications

• A61F9/00727

  Apparatus for retinal reattachment · CPC title

• A61B17/3462

  with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals (expandable cannulas A61B17/3417) · CPC title

• A61B17/3423 Primary

  Access ports, e.g. toroid shape introducers for instruments or hands (access sites for liquids A61M39/0247) · CPC title

• A61F9/007 Primary

  Methods or devices for eye surgery · CPC title

• A61F9/00736 Primary

  Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments (A61F9/008 takes precedence) · CPC title