Dean Kamen,Larry B. Gray,Jesse T. Bodwell,John M. Kerwin,Dirk A. van der Merwe,Stephen L. Fichera,Jonathan R. Thurber,Martin D. Desch
申请号：
US16788531
公开号：
US20200171241A1
申请日:
2020.02.12
申请国别(地区):
US
年份:
2020
代理人:
摘要：
A syringe pump includes a lead screw, a motor, and a sliding block assembly. The lead screw has threads and the motor is coupled to the lead screw to rotate it. The half-nut housing has a half nut and a barrel cam. The half nut is disposed within the half-nut housing. The half nut has half-nut threads at an end adjacent to the lead screw void. The half nut engages or disengages with the threads of the lead screw. The half nut includes a half-nut cam-follower surface and a half nut slot. The barrel cam is disposed within the half-nut housing and engages with the half-nut cam-follower surface. The barrel cam includes a pin to fit within the half nut slot such that the barrel cam rotates between a first position and a second position to actuate the half nut between the engagement position and the disengagement position, respectively.
