公开(公告)号：US20210252496A1

公开(公告)日：2021-08-19

申请号：US17175287

申请日：2021-02-12

Applicant: DENOVIX, INC.

Inventor： Daniel A. SCHIEFFER ,  David L. Ash ,  David B. Ward

IPC: B01L3/02

Abstract: Multivolume liquid pipettes with nested plunger and vacuum chamber configurations and methods of using such pipettes are disclosed herein. These pipettes typically include a body and a fluid displacement assembly with a small plunger element slideably received within a larger plunger element, each movable within a vacuum chamber for the precise and accurate control of the displacement of fluid, such as air. In turn, this allows for a single device to aspirate and dispense a broad range of liquids in a dynamic, accurate, and precise manner. In addition, the devices disclosed herein may also include a multi-tiered spring-loaded ejection mechanism to allow the user to use and eject pipette tips of different sizes.