公开(公告)号：US20240299650A1

公开(公告)日：2024-09-12

申请号：US18661920

申请日：2024-05-13

Applicant: Becton, Dickinson and Company

Inventor： Alessandro PIZZOCHERO ,  Mark WOOD ,  Muzaffer Yalgin OZSECEN ,  Timothy BLUM ,  Eric HASSENPFLUG ,  Cory BAKER ,  Jeffrey HELD

IPC: A61M5/145 ,  A61M5/142

CPC classification number: A61M5/1452 ,  A61M5/14236 ,  A61M5/14248

Abstract: A fluid delivery device has a syringe barrel-type reservoir with plunger, and plunger driver assembly comprising double-acting, telescoping lead screws that is located behind and outside of the barrel. Simultaneously and counter-rotating sleeve screw and center screw telescope out of a nested configuration of the plunger driver assembly and into the reservoir at a rate of double their individual and equal pitch and lead parameters when the sleeve screw is rotated. A threaded nut and gear anchor disposed on an end of the barrel receive the sleeve screw and the threaded nut causes the sleeve screw to translate and rotate in response to motor operation. A distal end of the center screw can be keyed to a plunger pusher for anti-rotation constraint when the motor is imparting rotation on the threaded nut and sleeve screw.

公开(公告)号：US20220054739A1

公开(公告)日：2022-02-24

申请号：US17401871

申请日：2021-08-13

Applicant: Becton, Dickinson and Company

Inventor： Alessandro PIZZOCHERO ,  Mark WOOD ,  Muzaffer Yalgin OZSECEN ,  Timothy BLUM ,  Eric HASSENPFLUG ,  Cory BAKER ,  Jeffrey HELD

IPC: A61M5/145 ,  A61M5/142

Abstract: A fluid delivery device has a syringe barrel-type reservoir with plunger, and plunger driver assembly comprising double-acting, telescoping lead screws that is located behind and outside of the barrel. Simultaneously and counter-rotating sleeve screw and center screw telescope out of a nested configuration of the plunger driver assembly and into the reservoir at a rate of double their individual and equal pitch and lead parameters when the sleeve screw is rotated. A threaded nut and gear anchor disposed on an end of the barrel receive the sleeve screw and the threaded nut causes the sleeve screw to translate and rotate in response to motor operation. A distal end of the center screw can be keyed to a plunger pusher for anti-rotation constraint when the motor is imparting rotation on the threaded nut and sleeve screw.