Invention Application
- Patent Title: DRUG DELIVERY DEVICES WITH PARTIAL NEEDLE RETRACTION
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Application No.: US17277555Application Date: 2019-10-22
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Publication No.: US20220031953A1Publication Date: 2022-02-03
- Inventor: Ali Nekouzadeh , Carl Conrath , Basel Hasan Taha
- Applicant: AMGEN INC.
- Applicant Address: US CA Thousand Oaks
- Assignee: AMGEN INC.
- Current Assignee: AMGEN INC.
- Current Assignee Address: US CA Thousand Oaks
- International Application: PCT/US19/57370 WO 20191022
- Main IPC: A61M5/315
- IPC: A61M5/315 ; A61M5/20

Abstract:
Methods, devices, and components are provided to reduce tissue resistive pressure during a subcutaneous drug delivery operation by increasing the size of the injection cavity by partially retracting the drug delivery member after inserting the drug delivery member to a subcutaneous position. The drug delivery devices described herein include a resilient member that interacts between stationary and moveable components of the drug delivery device. The drug delivery device include drives to move the stationary and moveable components relative to one another to insert a drug delivery member to a subcutaneous depth within a patient and to dispense a drug to the injection cavity in the patient. The resilient member is deformed during the operations or is pre-deformed and the stored energy of the resilient member in the deformed state then acts on the stationary and moveable components to partially retract the drug delivery member to relieve pressure in the injection region.
Public/Granted literature
- US12290666B2 Drug delivery devices with partial needle retraction Public/Granted day:2025-05-06
Information query
IPC分类: