Importance

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Abstract

A ventriculostomy reservoir includes a rigid base and an elastomeric cap which is positioned over the base to enclose a reservoir well. A rigid cap insert is captured by the lower portion of the cap and is positioned for engagement with the base. The cap insert and the base are configured so that the cap may be snap-fit onto the base in a manner forming a fluid-tight seal therebetween. In one form of the invention, the cap insert includes a cylindrical portion which extends downwardly from a flange-like portion captured within the cap, to fit within an upwardly extending wall portion of the base. The cylindrical portion includes an encircling protrusion on an exterior surface thereof which engages and fits within an encircling detent provided on the interior surface of the wall portion to snap-fit the cap to the base. In a second embodiment of the invention the cap insert exteriorly surrounds an upper end of the base, and a similar protrusion and detent arrangement is utilized to snap-fit the cap to the base. In a third embodiment of the invention the cap insert overlies an upper end of the base and is secured to the base through an interference fit both on interior and exterior surfaces of the wall portion of the base.

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First Claim