公开(公告)号：US12090498B2

公开(公告)日：2024-09-17

申请号：US17820703

申请日：2022-08-18

Applicant: INSULET CORPORATION

Inventor： Soroush Kamrava ,  Daniel Allis

IPC: B05B11/10 ,  A61M5/142 ,  F04B43/02 ,  G01N30/32

CPC classification number: B05B11/10 ,  A61M5/142 ,  F04B43/02 ,  G01N2030/326

Abstract: Disclosed herein are various embodiments of a pump mechanism comprising a rigid structure having an open end and a closed end, a plunger disposed in the open end of the rigid structure, and a flexible, fluid-proof sheet of material attached to an inner wall of the rigid structure and bonded to the head of the plunger such as to form a fluid barrier between the interior of the rigid structure and the plunger. Movement of the plunger toward the closed end of the rigid structure causes a rolling corner to be formed between the head of the plunger and the rigid structure and a fluid contained within the pump chamber to be forced out of the pump chamber via a fluid port defined in the closed end of the rigid structure.