Patent ID: 9440060
Filing Date: 2016-09-13
CPC Classification: A61M,Y10T

Claim Text:
1. A medical connector that is resistant to retrograde fluid flow comprising: a base member comprising a male tip protrusion extending in a distal direction, the male tip protrusion comprising an internal proximal opening, a distal opening, and a passageway extending between the proximal and distal openings; a proximal body member affixed to the base member in a permanent manner, the proximal body member including a proximal end opening; a proximal seal member with a first position and a second position, the proximal seal member comprising a proximal end surface and a distal end, the proximal end surface being generally even with the proximal end opening of the body member in the first position and being displaced distally from the proximal end opening of the body member in the second position, and the proximal seal member comprising an interior passage with a proximal end and a distal end; a support member positioned within the medical connector in a fixed position with respect to the base member, the support member comprising a base portion, one or more fluid openings, and an internal fluid passageway; and a dome valve positioned in a region inside of the medical connector between the base portion of the support member and the internal proximal opening of the male tip protrusion, a portion of the support member extending into an interior region of the dome valve, and the distance from the distal end of the proximal seal member to a proximal end of the dome valve being less than the distance from the internal proximal opening of the male tip protrusion to the distal opening of the male tip protrusion; wherein the dome valve is configured to open to permit fluid to flow from a proximal side of the dome valve to a distal side of the dome valve under a first fluid pressure differential between a proximal region of the medical connector and a distal region of the medical connector, and the dome valve is configured to open to permit fluid flow from the distal side of the dome valve to the proximal side of the dome valve under a second fluid pressure differential between a distal region of the medical connector and the proximal region of the medical connector that is higher than the first fluid pressure differential, and wherein opening of the dome valve is not functionally dependent on opening of the proximal seal member.