Drug delivery devices with partial drug delivery member retraction

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 dru...

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Bibliographische Detailangaben
Hauptverfasser:	TAHA, Basel Hasan, GIBSON, Scott R, CONRATH, Carl, NEKOUZADEH, Ali
Format:	Patent
Sprache:	eng
Schlagworte:	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
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Beschreibung
Zusammenfassung:	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 motor operably coupled to a drug delivery member. The motor can be selectively activated by a controller to retract the drug delivery member a predetermined distance to relieve pressure in an injection cavity in a patient. A force sensor can provide the controller with a drug delivery member insertion force. The controller can then estimate a tissue resistive pressure based on the drug delivery member insertion force and determine the predetermined distance for the partial drug delivery member retraction based on the tissue resistive pressure.