IP Library › Granted Patent US 8,312,800
Granted Patent B2
US 8,312,800 · App. 11/614,678 · Granted Nov 20, 2012

Pneumatic system for a vitrector

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Quick Facts
Patent No.
US 8,312,800
App. No.
11/614,678
Granted
Nov 20, 2012
Kind
B2
Abstract

A system for providing pneumatic power to a vitrector includes first and second output ports, an output valve, an isolation valve, and three manifolds. The first and second output ports provide pressurized gas to power a vitrector. The output valve alternately provides pressurized gas to the first and second output ports. The isolation valve provides pressurized gas to the output valve. Two manifolds fluidly connect the output valve to the first and second output ports. A third manifold fluidly connects the isolation valve to the output valve. When the isolation valve provides pressurized gas to the output valve, the output valve operates at a high rate of speed to alternately provide pressurized gas to the first and second output ports thereby powering the vitrector.

Claims (47)

1. A system for providing pneumatic power to a vitrector comprising:

a first output port for providing pressurized gas to a vitrector;

a second output port for providing pressurized gas to the vitrector;

an output valve for alternately providing pressurized gas to the first and second output ports;

an isolation valve for providing pressurized gas to the output valve;

a first manifold fluidly connecting the output valve to the first output port;

a second manifold fluidly connecting the output valve to the second output port; and

a third manifold fluidly connecting the isolation valve to the output valve;

wherein when the isolation valve provides pressurized gas to the output valve, the output valve operates at a high rate of speed to alternately provide pressurized gas to the first and second output ports thereby powering the vitrector.

2. The system of claim 1 further comprising:

a first venting port fluidly connected to the isolation valve via a first venting manifold; and

a second venting port fluidly connected to the output valve via a second venting manifold.

3. The system of claim 2 further comprising:

a first muffler connected to the first venting port; and

a second muffler connected to the second venting port.

4. The system of claim 1 further comprising:

a pressure transducer located near the output valve.

5. The system of claim 1 further comprising:

a pressure transducer located between the output valve and the first output port.

6. The system of claim 1 wherein the output valve is located between the isolation valve and the first output port.

7. The system of claim 1 wherein the output valve is a four-way valve and the isolation valve is a two-way valve.

8. The system of claim 1 further comprising:

a controller adapted to operate the output valve and the isolation valve.

9. The system of claim 8 wherein the controller further receives information from a pressure transducer.

10. The system of claim 1 wherein the output valve is operated to cause the vitrector to operate at about 5,000 cuts per minute.

11. A system for providing pneumatic power to a vitrector comprising:

a first output port for providing pressurized gas to a vitrector;

a second output port for providing pressurized gas to the vitrector;

an isolation valve for controlling the flow of pressurized gas to an output valve, the output valve for alternately providing pressurized gas to the first and second output ports, the output valve located between the isolation valve and the first and second output ports;

a controller for controlling the operation of the isolation valve and the output valve;

a first manifold fluidly connecting the output valve to the first output port;

a second manifold fluidly connecting the output valve to the second output port; and

a third manifold fluidly connecting the isolation valve to the output valve;

wherein when the isolation valve allows pressurized gas to flow to the output valve, the output valve operates at a high rate of speed to alternately provide pressurized gas to the first and second output ports thereby powering the vitrector.

12. The system of claim 11 further comprising:

a first venting port fluidly connected to the isolation valve via a first venting manifold; and

a second venting port fluidly connected to the output valve via a second venting manifold.

13. The system of claim 12 further comprising:

a first muffler connected to the first venting port; and

a second muffler connected to the second venting port.

14. The system of claim 11 further comprising:

a pressure transducer located near the output valve.

15. The system of claim 11 further comprising:

a pressure transducer located between the output valve and the first output port.

16. The system of claim 11 wherein the output valve is a four-way valve and the isolation valve is, a two-way valve.

17. The system of claim 11 wherein the controller further receives information from a pressure transducer.

18. The system of claim 11 wherein the controller operates the output valve to cause the vitrector to operate at about 5,000 cuts per minute.

Assignments (1)
CONFIRMATORY DEED OF ASSIGNMENT EFFECTIVE APRIL 8, 2019 Recorded Dec 10, 2019
From: NOVARTIS AG
To: ALCON INC.
Reel/Frame 051454/0788 →