Patent ID: 9522257
Filing Date: 2016-12-20
CPC Classification: A61M

Claim Text:
1. Apparatus comprising: a releasable latch positioning a proximal housing relative to a distal housing, the distal housing coupled to a syringe barrel and a rotational knob coupled to the distal housing; at least one plunger disposed within the syringe barrel, wherein the rotational knob is coupled to the plunger by a screw mechanism to move the plunger along a length of the syringe barrel when the rotational knob is rotated, the screw mechanism having a rotational lock to prevent the plunger from moving when in a locked position; wherein the latch defines an occlusion position to releasably lock the plunger at a first location along the length of the syringe and a perfusion position to releasably lock the plunger at a second location along the length proximal to the occlusion location; and a three-position switch coupled to the screw mechanism, the switch comprising a release position, an adjust position that allows the rotational knob to rotate, and a lock position, wherein the lock position is adjacent to the adjust position.