Device for removal of gas bubbles and dissolved gasses in liquid
AssigneeCelgard, LLC
InventorsClaudia F. E. Kirsch, Bradley W. Reed
Life of this patent
Estimating the term…
Abstract
A device (10) for removal of gas bubbles and dissolves gasses from fluids delivered into a patient during medical procedures is disclosed. A housing (20) having a number of gas permeable hollow fibers (50) passing therethrough is provided. The infused fluid is introduced through the interior lumens of the hollow fibers (50), and entrained or dissolved gasses are drawn through the fiber walls to the outer or shell side of the fibers. A vacuum may be drawn on the housing through a vent (32) to enhance gas removal. A passage (70) is optionally provided through the device to allow a tool or other device to be passed therethrough.
Claims27
A device for removal of gas from a liquid in a medical fluid infusion line, said device comprising:
- (a) a housing having a first end comprising an inlet port, a second end comprising an outlet port, an interior surface extending between said inlet port and said outlet port, and a vacuum port between said inlet port and said outlet port;
- (b) a plurality of hollow fiber membranes within said housing, each said hollow fiber membrane having a first end adjacent the inlet port and a second end adjacent the outlet port;
- (c) a first fluid tight seal between the first end of each said hollow fiber membrane and the interior surface of the housing;
- and
- (d) a second fluid tight seal between the second end of each said hollow fiber membrane and the interior surface of the housing.
A device for removal of gas from a liquid in a medical fluid infusion line, said device comprising:
- (a) a housing comprising a fluid inlet, a fluid outlet and a vacuum vent;
- (b) a sealed chamber within said housing between said fluid inlet and said fluid outlet, said sealed chamber being in communication with said vacuum vent;
- and
- (c) a plurality of hollow fiber membranes extending through said sealed chamber, each of said plurality of hollow fiber membranes having a first end in communication with said fluid inlet and a second end in communication with said fluid outlet.
A device for removal of gas from a liquid infused to an internal delivery site, and for allowing passage of a medical implement to the internal delivery site, said device comprising:
- (a) a housing comprising a fluid inlet, a fluid outlet and a vacuum vent;
- (b) a sealed chamber within said housing between said fluid inlet and said fluid outlet, said sealed chamber being in communication with said vacuum vent;
- (c) a plurality of hollow fiber membranes extending through said sealed chamber, each of said plurality of hollow fiber membranes having a first end in communication with said fluid inlet and a second end in communication with said fluid outlet;
- and
- (d) a passage through said sealed chamber, said passage comprising a first end in communication with said fluid inlet, a second end in communication with said fluid outlet, and a sleeve extending between said first and second ends.
A method of removing gas from a liquid infused to an internal delivery site of an organism, and accessing the internal delivery site with a medical implement, the method comprising:
- (a) passing the liquid through at least one hollow fiber membrane within a housing;
- (b) degassing the liquid by removing gasses through pores in the at least one hollow fiber membrane;
- (c) infusing the liquid to the internal delivery site;
- and
- (d) accessing the internal delivery site by passing the medical implement through a passage extending through the housing.
Dependencies are inferred from the claim text.