Charles F Lang

US Patent:

20130211248, Aug 15, 2013

Filed:

Oct 25, 2011

Appl. No.:

13/881072

Inventors:

Kevin P. Cowan - Allison Park PA, US
Raymond C. Hoffman - Gibsonia PA, US
Charles A. Lang - Pittsburgh PA, US
Mark Trocki - Cheswick PA, US
Joseph C. Mator - Pittsburgh PA, US
Edward P. Liscio - Murrysville PA, US
Bernard J. Hobi - Apollo PA, US
L. Robert Crouthamel - Mars PA, US
Glen P. Williams - Springdale PA, US
Vincent S. Rossitto - Apollo PA, US
Jaroslaw Wlodarczyk - Lower Burrell PA, US
Matthew Schrauder - Pittsburgh PA, US

Assignee:

MEDRAD, INC. - Indianola PA

International Classification:

A61M 5/00

US Classification:

600432

Abstract:

A bladder syringe for a fluid delivery system includes a cylindrical body, a cap-bladder assembly, a plunger element disposed in the cylindrical body, and a mounting assembly to secure the cap-bladder assembly to the cylindrical body. The cylindrical body has a distal end and a proximal end and defines a throughbore. The cap-bladder assembly is adapted for connection to the distal end of the cylindrical body, and includes a cap body and a bladder. The cap body defines an interior cavity and a distal discharge conduit and is adapted to engage the distal end of the cylindrical body. A disc-shaped bladder is disposed within the interior cavity and typically includes a central membrane portion. The plunger element is disposed in the throughbore of the cylindrical body and is vented to enable evacuation of the space between the plunger element and the cap-bladder assembly in the cylindrical body.