Phacoemulsification Fluidics System Having a Single Pump Head

• US 20110313343A1
• Filed: 06/18/2010
• Published: 12/22/2011
• Est. Priority Date: 06/18/2010
• Status: Abandoned Application

• Current Assignee: Alcon Research Limited (Nestle SA)
• Original Assignee: Alcon Research Limited (Nestle SA)
• Inventors: Sorensen, Gary P., Gordon, Raphael, Teodorescu, Dan, Milutinovic, Ivan
• Application Number:
  US12/818,682
• Publication Number:
  US 20110313343A1
• Time in Patent Office: Days
• US Class Current: 604/22
• 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
• CPC Class Codes: A61F 9/00745 using mechanical vibrations, e.g. ultrasonic
• CPC Class Codes: A61M 1/73 comprising sensors or indicators for physical values
• CPC Class Codes: A61M 1/74 Suction control underwater drainage A61M1/61
• CPC Class Codes: A61M 1/77 Suction-irrigation systems aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463
• CPC Class Codes: A61M 1/82 Membrane pumps, e.g. bulbs
• CPC Class Codes: A61M 2205/3337 Controlling, regulating pressure or flow by means of a valve by-passing a pump

Abstract

A phacoemulsification fluidics system for irrigating and aspirating a surgical site includes a sterile solution reservoir, an irrigation path configured to extend from the sterile solution reservoir to the surgical site, and an aspiration path configured to extend from the surgical site. The system also includes a single flow control pump head associated with both the irrigation path and the aspiration path. The flow control pump head is arranged within the system to simultaneously pressurize the irrigation path in a manner that drives the irrigation fluid to the surgical site and pressurize the aspiration path in a manner that vacuums waste fluid from the surgical site.

Claims

1. A phacoemulsification fluidics system for irrigating and aspirating a surgical site, comprising:

a sterile solution reservoir;

an irrigation path configured to extend from the sterile solution reservoir to the surgical site;

an aspiration path configured to extend from the surgical site; and

a single flow control pump head associated with both the irrigation path and the aspiration path, the flow control pump head being arranged within the system to simultaneously pressurize the irrigation path in a manner that drives the irrigation fluid to the surgical site and pressurize the aspiration path in a manner that vacuums waste fluid from the surgical site.

2. The phacoemulsification fluidics system of claim 1, further comprising:

an irrigation flow control shunt valve fluidly associated with the irrigation path and configured to change the pressure in the irrigation path; and

an aspiration flow control shunt valve fluidly associated with the aspiration path and configured to change the pressure in the aspiration path.

3. The phacoemulsification fluidics system of claim 2, further comprising a controller in communication with the irrigation and aspiration flow control shunt valves, the controller regulating the shunt valves to maintain a preset pressure within the respective irrigation path and aspiration path.

4. The phacoemulsification fluidics system of claim 2, further comprising a pressure relief line connecting the irrigation flow control shunt valve to the sterile solution reservoir, the flow control shunt valve being arranged to control fluid flow from the flow control pump head to the pressure relief line when pressure in the irrigation exceeds a pre-established level.

5. The phacoemulsification fluidics system of claim 4, further comprising a vacuum pressure relief line connecting the aspiration flow control shunt valve to one of a fluid source and a drain, the aspiration flow control shunt valve being arranged to control fluid from the vacuum pressure relief line to the aspiration path when pressure in the aspiration path falls below a pre-established level.

6. The phacoemulsification fluidics system of claim 1, further comprising:

an irrigation pressure sensor associated with the irrigation path and configured to detect a parameter of the fluid within the irrigation path; and

an aspiration pressure sensor associated with the aspiration path and configured to detect a parameter of the fluid within the aspiration path.

7. The phacoemulsification fluidics system of claim 6, wherein the irrigation and aspiration pressure sensors comprise pressure sensors arranged to detect pressure within the respective irrigation and aspiration paths.

8. The phacoemulsification fluidics system of claim 1, wherein the single flow control pump head is a head of a peristaltic pump directing fluid at the same motor speed through the irrigation path to the surgical site and from the surgical site through the aspiration path.

9. The phacoemulsification fluidics system of claim 1, comprising a pressure relief line connecting the irrigation path and the aspiration path.

10. The phacoemulsification fluidics system of claim 1, wherein the flow control pump head is configured to pump fluid at the same motor speed through both the irrigation path and the aspiration path.

11. A phacoemulsification fluidics system for irrigating and aspirating a surgical site, comprising:

an irrigation path configured to extend to the surgical site;

an aspiration path configured to extend from the surgical site; and

a control system configured to regulate fluid flow to the surgical site comprising;

a flow control pump head associated with both the irrigation path and the aspiration path, the flow control pump head being configured to simultaneously pump fluid through both the irrigation path and the aspiration path,

at least one flow control shunt valve configured to control flow through at least one of the irrigation and aspiration paths;

at least one sensor configured to detect a parameter of fluid in at least one of the irrigation and aspiration paths;

a controller in communication with the flow control pump head, the at least one flow control shunt valve, and the at least one sensor, the controller being structurally configured to receive data indicative of the detected parameter from the at least one sensor, the controller also being structurally arranged to communicate control signals to the at least one flow control shunt valve based on the received data from the at least one sensor.

12. The phacoemulsification fluidics system of claim 11, wherein the at least one flow control shunt valve comprises:

an irrigation flow control shunt valve configured to control flow through the irrigation path; and

an aspiration flow control shunt valve configured to control flow through the aspiration path.

13. The phacoemulsification fluidics system of claim 11, wherein the at least one sensor comprises:

an irrigation pressure sensor configured to detect a parameter of fluid in the irrigation path; and

an aspiration pressure sensor configured to detect a parameter of fluid in the aspiration path.

14. The phacoemulsification fluidics system of claim 13, wherein the irrigation and aspiration pressure sensors comprise pressure sensors arranged to detect pressure within the respective irrigation and aspiration paths.

15. The phacoemulsification fluidics system of claim 11, comprising:

a sterile solution reservoir; and

a pressure relief line connecting the irrigation flow control shunt valve to the sterile solution reservoir, the irrigation flow control shunt valve being arranged to control fluid flow from the flow control pump head to the pressure relief line when pressure in the irrigation exceeds a pre-established level.

16. The phacoemulsification fluidics system of claim 11, further comprising:

one of a fluid source and drain; and

a vacuum pressure relief line connecting the aspiration flow control shunt valve to the one of the fluid source and drain, the aspiration flow control shunt valve being arranged to control fluid flow from the vacuum pressure relief line when pressure in the aspiration path falls below a pre-established level.

17. A phacoemulsification surgical console comprising:

an ultrasonic generator subsystem comprising an ultrasonic oscillation handpiece including a cutting needle, the handpiece being configured to emulsify a lens in an eye; and

a fluidics subsystem comprising

a sterile solution reservoir;

an irrigation path associated with the ultrasonic oscillation handpiece and configured to extend from the sterile solution reservoir to the surgical site;

an aspiration path associated with the ultrasonic oscillation handpiece and configured to extend from the surgical site; and

a single peristaltic pump head associated with both the irrigation path and the aspiration path, the peristaltic pump head being arranged within the system to pressurize the irrigation path in a manner that drives the irrigation fluid to the surgical site and being arranged within the system to create a vacuum in the aspiration path in a manner that vacuums waste fluid from the surgical site.

18. The phacoemulsification surgical console of claim 18, comprising:

an irrigation flow control shunt valve associated with the irrigation path and disposed downstream of the peristaltic pump head;

an aspiration flow control shunt valve associated with the aspiration path and disposed upstream of the peristaltic pump head;

an irrigation pressure sensor associated with the irrigation path and configured to detect a parameter of the fluid within the irrigation path, the irrigation pressure sensor being disposed downstream of the irrigation flow control shunt valve;

an aspiration pressure sensor associated with the aspiration path and configured to detect a parameter of the fluid within the aspiration path, the aspiration pressure sensor being disposed upstream of the aspiration flow control shunt valve; and

a controller in communication with the irrigation and aspiration flow control shunt valves and in communication with the irrigation and aspiration pressure sensors, the controller being configured to receive information from the irrigation and aspiration pressure sensors and to send control signals to the irrigation and aspiration flow control shunt valves based on the received information to effect a pressure change within the respective irrigation path and aspiration path.

19. The phacoemulsification surgical console of claim 18, comprising:

one of a sterile solution reservoir and drain; and

a pressure relief line connecting the irrigation flow control shunt valve to the one of a sterile solution reservoir and drain, the irrigation flow control shunt valve being arranged to direct fluid from the peristaltic pump head to the pressure relief line when pressure in the irrigation exceeds a pre-established level.

20. The phacoemulsification surgical console of claim 18, further comprising:

a fluid source; and

a vacuum pressure relief line connecting the aspiration flow control shunt valve to the fluid source, the aspiration flow control shunt valve being arranged to direct fluid from the vacuum pressure relief line when pressure in the aspiration path falls below a pre-established level.

21. A method of operating a fluidics subsystem of a phacoemulsification system, comprising:

detecting a parameter of a fluid in an irrigation path of a phacoemulsification system;

detecting a parameter of a fluid in an aspiration path of a phacoemulsification system; and

controlling fluid flow through the irrigation and aspiration paths with a single flow control pump head associated with both the irrigation path and the aspiration path.

22. The method of claim 21, comprising:

adjusting the state of an irrigation flow control shunt valve associated with the irrigation path to control fluid flow into a pressure release line.

23. The method of claim 22, comprising:

adjusting the state of an aspiration flow control shunt valve associated with the aspiration path to control fluid flow into the aspiration path from a vacuum pressure release line.