| US 7,611,494 B2 | ||
| Spray for fluent materials | ||
| Patrick Kenneth Campbell, Wayland, Mass. (US); Arthur J. Driscoll, Reading, Mass. (US); and Tom Guest, Franklin, Mass. (US) | ||
| Assigned to Confluent Surgical, Inc., Waltham, Mass. (US) | ||
| Filed on Feb. 08, 2005, as Appl. No. 11/53,084. | ||
| Prior Publication US 2006/0189944 A1, Aug. 24, 2006 | ||
| Int. Cl. A61M 5/00 (2006.01) | ||
| U.S. Cl. 604—191 | 14 Claims |
| 1. A medical apparatus for applying a biocompatible coating in situ comprising:
an elongated barrel having a distal end and defining a longitudinal axis;
a first conduit having a distal end extending beyond the distal end of the elongated barrel and defining a first exit opening;
a second conduit having a distal end extending beyond the distal end of the elongated barrel and defining a second exit opening,
the distal end of the first conduit being spaced from the distal end of the second conduit, the first and second conduits
being configured to deliver a first composition through the first conduit and a second composition through the second conduit,
the first and second exit openings being positioned externally of the elongated barrel to mix the first composition and the
second composition externally of the elongated barrel and the first and second conduits,
a first gas flow conduit positioned about the first conduit and defining a first gas flow outlet adjacent the distal end of
the elongated barrel; and
a second gas flow conduit positioned about the second conduit and defining a second gas flow outlet adjacent the distal end
of the elongated barrel;
wherein the first composition comprises a precursor to a material formed after the mixing of the first composition and the
second composition, and
wherein the distal end of the first conduit has a first beveled tip defining the first exit opening positioned externally
of the elongated barrel, the first exit opening defining a first plane, which is angled with respect to a longitudinal axis
of the first conduit and the distal end of the second conduit has a second beveled tip defining the second exit opening positioned
externally of the elongated barrel, the second exit opening defining a second plane having a second axis which is angled with
respect to a longitudinal axis of the second conduit, the first axis intersecting the second axis of a position distal of
the first and second beveled tips to define an interior angle that is less than about 140 degrees, the first and second beveled
tips being oriented to minimize cross-contamination of the first and second compositions.
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