Medico-surgical tube including improved means for administering liquid or gas treatment
AssigneeSheridan Catheter Corp.
InventorDavid S. Sheridan
Life of this patent
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Abstract
A medical-surgical tube having a major lumen defined by an inner periphery of a wall of the tube, an injection lumen within the wall of the tube, and at least one one-way valve in the wall. The valve allows fluid to flow from the injection lumen through an outer or inner periphery of the wall of the tube and prevents return of the fluid back into the injection lumen. The tube can include a plurality of spaced-apart valves. The valve can be a piercing in the wall of the tube which is defined by opposed surfaces resiliently biased against each other and extending from the injection lumen to the outer or inner periphery of the wall of the tube.
Claims22
A medical-surgical tube comprising:
- a tube having a major lumen defined by an inner periphery of a wall of the tube;
- an injection lumen within the wall of the tube;
- and
- at least one one-way valve means in the wall for allowing fluid to flow from the injection lumen in one direction through the wall of the tube, the valve means preventing the passage of fluid in an opposite direction through the wall and back into the injection lumen, the valve means comprising a piercing in the wall of the tube, the piercing being inclined at an angle other than 90.degree. with respect to a direction of flow of fluid passing through the injection lumen.
Dependencies are inferred from the claim text.