Aspiration system for medical devices
AssigneeData Ltd., Inc.
InventorAlex Urich
Life of this patent
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Abstract
An aspiration tube has a relatively high fluidic resistance. The tube is coupled to a medical device and a pump of an aspiration system. The tube can be designed to create a pressure drop that at least equals the maximum vacuum pressure of the pump. The fluidic resistance can be accomplished with a tube having an inner diameter less than 0.05 inches. The aspiration tube and an irrigation tube may be coupled to an anterior chamber of a cornea during a phaco procedure. The aspiration tube is sized so that even if a maximum pressure occurs, the resultant aspiration flowrate will be such that the cornea will not be damaged when an occlusion is cleared from the tube. An in-line filter may also be attached to the aspiration tube to filter out particles in the system.
Claims12
A medical aspiration system, comprising:
- a pump;
- a tube that is connected to said pump, said tube having an inner diameter less than 0.05 inches but no less than 0.01 inches, and a length of at least 3 feet, and
- a filter coupled to said tube, the filter including a filter mesh within a filter case, the filter case having an inner surface that includes a plurality of longitudinal grooves running along and outside of the filter mesh.
A medical cutting system, comprising:
- a handpiece;
- a cutting element attached to said handpiece;
- a tube that is connected to said handpiece and that has an inner diameter less than 0.05 inches but no less than 0.01 inches, and a length of at least 3 feet;
- a pump connected to said tube;
- and
- a filter coupled to said tube, the filter including a filter mesh within a filter case, the filter case having an inner surface that includes a plurality of longitudinal grooves running along and outside of the filter mesh.
Dependencies are inferred from the claim text.