Devices, systems, and methods for tip vacuum control during aspiration

Patent metadata

Field	Value
Publication number	US-10617562-B2
Application number	US-201715431083-A
Country	US
Kind code	B2
Filing date	Feb 13, 2017
Priority date	Dec 5, 2013
Publication date	Apr 14, 2020
Grant date	Apr 14, 2020

Abstract

Disclosed herein is an apparatus for insertion in an eye of a patient for aspirating material from the eye in the treatment of an ocular condition, the apparatus comprising a needle disposed at a distal end of the apparatus, an aspiration channel extending from a distal aperture of the needle to a proximal end of the apparatus, and an irrigation sleeve coaxially disposed about the needle. The aspiration channel comprises a proximal portion having a first diameter, a bypass portion having a second diameter and at least one bypass port, and a distal portion having a third diameter. The second diameter is larger than the first diameter. The irrigation sleeve and the needle form an annular irrigation passageway therebetween. The bypass port is shaped and configured to establish fluid communication between the irrigation passageway and the aspiration channel.

First claim

We claim:

1. An apparatus for insertion in an eye of a patient for aspirating material from the eye in a treatment of an ocular condition, the apparatus comprising:
a needle disposed at a distal end of the apparatus, the needle including a distal aperture;
an aspiration channel extending from the distal aperture of the needle to a proximal end of the apparatus, the aspiration channel comprising a proximal portion having a first internal diameter, a bypass portion having a second internal diameter, and a distal portion having a third internal diameter, wherein the bypass portion is located between the proximal portion and the distal portion and the second internal diameter is larger than both the first internal diameter and the third internal diameter;
an irrigation passageway coaxially disposed about at least a portion of the bypass portion and the distal portion of the aspiration channel; and
at least one bypass port formed in a wall between the bypass portion of the aspiration channel and the irrigation passageway to establish direct fluid communication between the irrigation passageway and the aspiration channel.

2. The apparatus of claim 1 , wherein the bypass port is located in the bypass portion between the distal portion and a threaded region of the wall between the aspiration channel and the irrigation passageway.

3. The apparatus of claim 2 , wherein the threaded region of the wall has an internal diameter that matches the second diameter.

4. The apparatus of claim 1 , further comprising an irrigation sleeve coaxially disposed about the needle, the irrigation sleeve and the needle forming at least a portion of the irrigation passageway therebetween.

5. The apparatus of claim 4 , wherein the irrigation passageway extends proximal an end of the irrigation sleeve coupled to the apparatus.

6. The apparatus of claim 4 , further comprising a sealing element disposed on the irrigation sleeve adjacent the irrigation passageway, the sealing element being shaped and configured to selectively seat against the at least one bypass port and block fluid flow through the at least one bypass port with application of force on the sealing element.

7. The apparatus of claim 6 , wherein the sealing element comprises a displaceable portion of the irrigation sleeve configured to shift into the irrigation passageway to seat against the at least one bypass port with the application of force upon the sealing element in the direction of the aspiration channel.

8. The apparatus of claim 7 , further comprising an annular chamber formed within the irrigation sleeve to circumferentially surround the aspiration channel, wherein the sealing element is disposed on the irrigation sleeve between the annular chamber and the irrigation passageway.

Assignees

• Alcon Inc

Inventors

• Bourne John Morgan
• Carpenter John Richard

Classifications

• A61M2210/0612

  Eyes · CPC title

• A61M3/0216

  Pressure · CPC title

• A61F9/00745 Primary

  using mechanical vibrations, e.g. ultrasonic · CPC title

• A61M1/0058

  Human Necessities · mapped topic

• A61M1/0031

  Human Necessities · mapped topic