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US 8,523,814 B2Granted
Self-venting cannula assembly
AssigneeCovidien LP
InventorMel Finke
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a self-venting cannula assembly. The self-venting cannula assembly including an outer tube that defines a throughbore, an inner tube, a vent aperture, and a filter element. The inner tube is positioned within the outer tube, which defines a vent channel therebetween. The vent aperture is formed in the outer tube to provide fluid communication between the vent channel and an external environment. The filter element is positioned over the vent aperture and prevents particles having a dimension greater than about 0.2 microns from passing therethrough.
Claims10
A self-venting cannula assembly comprising:
- an outer tube defining a throughbore;
- an inner tube positioned within the outer tube and defining a vent channel therebetween;
- a vent aperture formed in the outer tube to provide fluid communication between the vent channel and an external environment;
- and
- a filter element positioned over the vent aperture, the filter element preventing particles having a dimension greater than about 0.2 microns from passing through the filter element, wherein the filter element includes a tapered body portion that is configured and dimensioned to engage a corresponding shoulder defined within the outer tube to support the filter element within the outer tube.
2 more elements
Dependencies are inferred from the claim text.