US Patent 11801346 Autoinjector and method of injecting fluids
Patent 11801346 was granted and assigned to Battelle Memorial Institute on October, 2023 by the United States Patent and Trademark Office.
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US Patent 11801346 Autoinjector and method of injecting fluids
Article
Patent abstract
An autoinjector and method of injection are described. A power spring causes rotation of a drive nut about the central axis of the autoinjector that, in turn, causes a middle screw to rotate in the same direction as the drive nut and also to move in the distal direction while pushing a center screw in the distal direction that pushes the syringe and needle. The center screw also pushes a plunger that pushes the fluid out of the syringe. After injection, a locked retract screw is freed and rotates in the same direction as the middle screw causing the syringe to retract the syringe into the housing.
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Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
David A. Holley
John P. Tallarico
Steven M. Madland
Timothy M. Blum
William G. Atterbury
Date of Patent
October 31, 2023
Patent Application Number
16845065
Date Filed
April 9, 2020
Patent Citations
Patent Primary Examiner
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