Invention Grant
- Patent Title: Selectable needle syringe with retraction plunger
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Application No.: US15115898Application Date: 2015-02-03
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Publication No.: US10195363B2Publication Date: 2019-02-05
- Inventor: Robert Scott Russo , Daniel A. Heinsbergen
- Applicant: UNL Holdings LLC
- Applicant Address: US NY New York
- Assignee: UNL Holdings LLC
- Current Assignee: UNL Holdings LLC
- Current Assignee Address: US NY New York
- Agency: Hamilton, Brook, Smith & Reynolds, P.C.
- International Application: PCT/US2015/014260 WO 20150203
- International Announcement: WO2015/117135 WO 20150806
- Main IPC: A61M31/00
- IPC: A61M31/00 ; A61M5/32 ; A61M5/315

Abstract:
The present embodiments provide for a syringe and a retraction plunger assembly configured to accept various retractable needle assemblies, which are capable of cooperating to provide a retraction safety syringe. In particular, the syringe includes a barrel and a retraction plunger assembly comprising a control unit attached to a plunger and releasably engaged to a housing, and at least one biasing means disposed within the plunger assembly. Upon completion of dose delivery via a retractable needle, the control unit disengages from housing and the biasing member retracts the plunger and a connected needle into the barrel. Various elements are configured to prevent further use of the syringe. The control unit can be used to control a rate of needle retraction.
Public/Granted literature
- US20170165432A1 SELECTABLE NEEDLE SYRINGE WITH RETRACTION PLUNGER Public/Granted day:2017-06-15
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