SYSTEMS AND METHODS FOR OCULAR SURGERY

• US 20140271251A1
• Filed: 02/27/2014
• Published: 09/18/2014
• Est. Priority Date: 03/15/2013
• Status: Active Grant

• Current Assignee: Alcon Incorporated
• Original Assignee: Alcon Research Limited (Nestle SA)
• Inventors: Bourne, John Morgan, Sussman, Glenn Robert
• Granted Patent: US 9,750,638 B2
• Time in Patent Office: Days
• US Class Current: 417/53
• CPC Class Codes: A61F 9/00745 using mechanical vibrations, e.g. ultrasonic
• CPC Class Codes: A61M 1/774 Handpieces specially adapted for providing suction as well as irrigation, either simultaneously or independently
• CPC Class Codes: F04B 43/08 having tubular flexible members F04B43/12 takes precedence
• CPC Class Codes: F04B 43/12 having peristaltic action
• CPC Class Codes: F04B 53/22 Arrangements for enabling ready assembly or disassembly

Abstract

Ocular surgery may be performed by a variety of systems, processes, and techniques. In certain implementations, a system and a process for ocular surgery may include the ability to draw ocular fluid into a channel of a hand-held pump system and separate the fluid into multiple compressible channels to create multiple flows. The system and the process may also include the ability to peristaltically pump the fluid through the compressible channels.

Claims

1. A hand-held pump system, the system comprising:

a channel comprising at least two compressible channels, each of the channels adapted to create a separate fluid flow; and

a rotor having a helical scroll, the helical scroll comprising;

a first portion having an increasing radius along a first length of the rotor in the direction of fluid flow, the radius increasing from a first end of the rotor to a maximum value; and

a second portion having a constant radius along a second length of the rotor, the helical scroll adapted to compress the compressible channels in a peristaltic manner to capture and move fluid along the channels.

2. The system of claim 1, wherein the helical scroll is adapted to capture fluid in the compressible channels in an out-of-phase manner.

3. The system of claim 2, wherein the helical scroll is adapted to compress the compressible channels in at least two locations to capture fluid.

4. The system of claim 1, wherein the second length of the rotor corresponds to a length over which the helical scroll makes at least one rotation around the rotor.

5. The system of claim 1, wherein the helical scroll further comprises a third portion having a decreasing radius along a third length of the rotor, the radius of the third portion decreasing from the maximum value in the direction of fluid flow.

6. The system of claim 5, wherein the first portion of the rotor is longer than the second length of the rotor.

7. The system of claim 1, further comprising a channel coupled to the compressible channels and adapted to receive pumped fluid therefrom.

8. The system of claim 7, further comprising an aspiration port adapted to expel the pumped fluid.

9. The system of claim 1, further comprising a motor adapted to drive the rotor.

10. A method for pumping, the method comprising:

drawing ocular fluid into a channel of a hand-held pump system;

separating the fluid into multiple compressible channels to create multiple flows; and

peristaltically pumping the fluid through the compressible channels.

11. The method of claim 10, wherein peristaltically pumping the fluid comprises compressing each of the compressible channels in at least two locations to capture fluid.

12. The method of claim 11, further comprising capturing fluid in the compressible channels in an out-of-phase manner.

13. The method of claim 11, wherein peristaltically pumping the fluid comprises rotating a rotor having a helical scroll, the helical scroll comprising:

a first portion having an increasing radius along a first length of the rotor in the direction of fluid flow, the radius increasing from a first end of the rotor to a maximum value; and

a second portion having a constant radius along a second length of the rotor, the helical scroll adapted to compress the compressible channels in a peristaltic manner to capture and move fluid along the channels.

14. The method of claim 13, wherein peristaltically pumping the fluid further comprises compressing the compressible channels in at least two locations with the helical scroll to capture fluid.

15. The method of claim 14, further comprising capturing fluid in the compressible channels in an out-of-phase manner with the helical scroll.

16. The method of claim 10, further comprising expelling fluid through an aspiration port.

17. The method of claim 16, further comprising combining the fluid from the compressible channels before expelling the fluid through the aspiration port.