PROCESS AND AUTOINJECTOR DEVICE FOR INJECTIONS WITH INCREASED PATIENT COMFORT

The invention provides methods and apparatus for injecting a medicine, especially a highly viscous medicine. Conventional methods and apparatus for injecting viscous medicines suffers from a variety of problems such as excessive force during the initial needle insertion and initial injection. In an...

Full description

Saved in:
Bibliographic Details
Main Authors Boyd, Douglas E, Atterbury, William G
Format Patent
LanguageEnglish
Published 02.12.2021
Subjects
DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
Online AccessGet full text

Cover

More Information
Summary:The invention provides methods and apparatus for injecting a medicine, especially a highly viscous medicine. Conventional methods and apparatus for injecting viscous medicines suffers from a variety of problems such as excessive force during the initial needle insertion and initial injection. In an inventive method, during the initial phase of the injection, energy is stored in a torsion spring that is subsequently released during a later stage of the injection. The present invention also provides for an improved autoinjector; especially via the use of a combination compression and torsion spring that powers the injection through controlling force applied to plunger via a screw flange or nut having pins that ride in a prescribed path down the length of the autoinjector.
Bibliography:Application Number: US202117342530