LINEAR DRIVE FOR PISTON APPLICATION IN INFUSION SYRINGE OF INFUSION PUMP AND METHOD OF REPLACEMENT OF INFUSION SYRINGE Russian patent published in 2017 - IPC A61M5/145 

FIELD: medical equipment.

SUBSTANCE: group of inventions relates to medical equipment. Drive device for linear displacement of piston positioned on infusion pump of infusion syringe with main drive, which includes main contact device to create support for piston of infusion syringe, fixing device for fixation of piston of infusion syringe on main contact device, means to actuate fixing device, and traction device for main drive unit, which includes spindle driven by motor traction and composite nut of traction spindle, which has at least one nut flap movable in radial direction. Main drive unit additionally comprises detector for detecting piston of infusion syringe before main contact device. Device for detecting has multilimit sensor unit with at least two-stage recording front zone device for detecting different positions of piston of infusion syringe before main contact device. Infusion pump and method of replacing infusion syringe are disclosed, using linear drive of piston movement.

EFFECT: higher safety of replacing infusion syringe in infusion pump.

14 cl, 7 dwg