Invention Grant
- Patent Title: Constant force syringe
- Patent Title (中): 恒力注射器
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Application No.: US13797959Application Date: 2013-03-12
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Publication No.: US09101713B2Publication Date: 2015-08-11
- Inventor: Kevin P. Cowan , Barry L. Tucker
- Applicant: MEDRAD, INC.
- Applicant Address: US PA Indianola
- Assignee: Bayer Medical Care Inc.
- Current Assignee: Bayer Medical Care Inc.
- Current Assignee Address: US PA Indianola
- Agent Joseph L. Kent; David Schramm; James R. Stevenson
- Main IPC: A61M5/315
- IPC: A61M5/315 ; A61M5/168 ; A61M5/20 ; A61M5/00 ; A61M5/145

Abstract:
Various syringe systems are disclosed. One such syringe system may include a body having a hollow lumen and a distal end, a vacuum chamber disposed within the hollow lumen of the syringe body, a first plunger connected to a distal portion of the vacuum chamber, the first plunger forming a first seal against an inner surface of the syringe body and defining a fluid delivery volume between the first plunger and the distal end of the syringe body, a second plunger disposed within the vacuum chamber, the second plunger forming a second seal against an inner surface of the vacuum chamber and defining a proximal and distal volume compartments within the vacuum chamber, and a piston affixed to the second plunger, the piston configured to move the second plunger within the vacuum chamber, thereby altering a volume of the proximal volume compartment and a volume of the distal volume compartment.
Public/Granted literature
- US20140276451A1 CONSTANT FORCE SYRINGE Public/Granted day:2014-09-18
Information query
IPC分类: