Dual lumen adjustable length cannulae for liquid perfusion or lavage
OwnerJohn A. St. Cyr, J. Michael Holton +2inventors
InventorsJohn A. St. Cyr, J. Michael Holton, Theodore C. Kelly, Linda M. Shecterle
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Abstract
The invention is a dual lumen, adjustable cannula assembly which comprises an inner cannula which is moveable within an outer cannula. Each cannula has openings for fluid passage. The assembly may be placed at any region within a body cavity such as the peritoneal cavity, the vena cava, veins or arteries. The inner cannula can be advanced beyond the position of the cannula assembly so as to communicate with a region of the cavity different from that with which the outer cavity communicates.
Claims15
A dual lumen cannula assembly comprising (a) an outer cannula being provided with a plurality of the openings at its distal end;
- (b) an inner cannula being provided with a plurality of openings at its distal end, said inner cannula being of length greater than that of said outer cannula placed within and moveable within said outer cannula;
- and (c) said inner cannula and outer cannula joined through a “Y”, shaped joint so that said outer cannula and said inner cannula have separate proximal ends.
A dual lumen cannula assembly comprising (a) an outer cannula being provided with an opening at its distal end;
- (b) an inner cannula being provided with an opening at its distal end, said inner cannula being of length greater than that of said outer cannula placed within and moveable within said outer cannula;
- and (c) said inner cannula and outer cannula joined through a “Y” shaped joint so that said outer cannula and said inner cannula have separate proximal ends.
Dependencies are inferred from the claim text.