Needle-free medical connector

Details Needle-free medical connector Needle-free medical connector

2008-05-05

2010-11-30

Fristoe, Jr., John K (Department: 3753)

Valves and valve actuation

With correlated flow path

Valve operated by joining flow path sections

C251S149600, C604S249000

Reexamination Certificate

active

07841581

ABSTRACT:
A needleless connector for controllably permitting fluid communication between a cannula and a port usually associated with a patient catheter or line. The connector is made from three parts, two of which form an elongated housing for a valve part. The valve part comprises a domed slit valve which is in a closed state before a cannula is inserted into the housing. Insertion of the cannula inverts the dome valve to open a slit permitting fluid communication there through. Insertion of the cannula also displaces the valve part about and along a post internally disposed in the housing. Assembled, the valve part is initially disposed about the post in a compressive sealed relationship to form a secure pathway therebetween. The post is shaped to store greater energy by stretching portions of the valve part as the valve part is displaced therealong. Upon removal of the cannula, stored energy is released from the stretched portion of the valve part to return the valve part to an original state, presenting a closed and cleanable surface to a user.

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