公开(公告)号：US20210146055A1

公开(公告)日：2021-05-20

申请号：US17094176

申请日：2020-11-10

Applicant: AMGEN INC.

Inventor： Mehran Mojarrad ,  Ali Nekouzadeh ,  Susan McConnell Montalvo ,  Scott R. Gibson ,  Sheldon B. Moberg ,  Joshua Tamsky ,  Paul D. Faucher

IPC: A61M5/315

Abstract: Drug delivery devices are configured to include a gas-driven piston assembly having a flexible pushrod, a non-linear guide include a non-linear guide pathway at least partially surrounding the flexible pushrod, a cylinder at least partially surrounding the flexible pushrod, and a piston movable within the cylinder in response to the pressurized gas entering the cylinder. Some arrangements include a roller pushrod guide system and/or a gear pushrod guide system.

公开(公告)号：US12070582B2

公开(公告)日：2024-08-27

申请号：US17094176

申请日：2020-11-10

Applicant: AMGEN INC.

Inventor： Mehran Mojarrad ,  Ali Nekouzadeh ,  Susan McConnell Montalvo ,  Scott R. Gibson ,  Sheldon B. Moberg ,  Joshua Tamsky ,  Paul D. Faucher

IPC: A61M5/315

CPC classification number: A61M5/31513 ,  A61M2005/3152

Abstract: Drug delivery devices are configured to include a gas-driven piston assembly having a flexible pushrod, a non-linear guide include a non-linear guide pathway at least partially surrounding the flexible pushrod, a cylinder at least partially surrounding the flexible pushrod, and a piston movable within the cylinder in response to the pressurized gas entering the cylinder. Some arrangements include a roller pushrod guide system and/or a gear pushrod guide system.