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US 2004/0000349 A1Published application
Turbine fluid flow resistor
AssigneeBausch & Lomb Incorporated
InventorsLaurence J. Cull, James T. Perkins, Matthew J. Fitzgerald
Life of this patent
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Abstract
A fluid flow resistor 10 for use in ophthalmic surgery includes a housing 12 having an inlet 14 and an outlet 16. An elongated turbine 22 is caused to spin within the housing 12 by a flow of fluid which extracts energy from the fluid flow and effectively increases a resistance to fluid flow from the inlet 14 to the outlet 16.
Claims8
A fluid flow resistor for use in ophthalmic surgery comprising:
- a housing including an inlet and an outlet for receiving a flow of fluid within the housing;
- and
- an elongated turbine disposed within the housing, such that a flow of fluid from the inlet will cause the turbine to spin, thereby extracting energy from the fluid flow and effectively increasing a resistance of fluid flow from the inlet to the outlet.
A fluid flow resistor cassette for use in ophthalmic surgery comprising:
- an aspirant fluid collection cassette for receiving and collecting aspirant fluid from a surgical site in a reservoir;
- a housing integrally formed with the cassette, such that the housing includes an inlet for receiving the aspirant fluid and an outlet in communication with the reservoir;
- and
- an elongated turbine disposed within the housing, such that a flow of aspirant fluid from the inlet will cause the turbine to spin, thereby extracting energy from the fluid flow and effectively increasing a resistance to the fluid flow from the inlet to the outlet.
1 more element
Dependencies are inferred from the claim text.