MEDICAL INJECTOR SYSTEM

• US 20170043082A1
• Filed: 10/28/2016
• Published: 02/16/2017
• Est. Priority Date: 11/25/2003
• Status: Active Grant

• Current Assignee: Bayer Healthcare LLC (Bayer AG)
• Original Assignee: Bayer Healthcare LLC (Bayer AG)
• Inventors: Cowan, Kevin P., HAURY, JOHN H., Neff, Jared E.
• Granted Patent: US 10,434,249 B2
• Time in Patent Office: Days
• CPC Class Codes: A61M 2005/14553 comprising a pressure jacket
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 2205/505 Touch-screens; Virtual keyboard or keypads; Virtual buttons; Soft keys; Mouse touches
• CPC Class Codes: A61M 5/007 for contrast media
• CPC Class Codes: A61M 5/14546 Front-loading type injectors
• CPC Class Codes: A61M 5/1456 with a replaceable reservoir comprising a piston rod to be moved into the reservoir, e.g. the piston rod is part of the removable reservoir
• CPC Class Codes: A61M 5/14566 with a replaceable reservoir for receiving a piston rod of the pump
• CPC Class Codes: A61M 5/1458 Means for capture of the plunger flange
• CPC Class Codes: A61M 5/19 having more than one chamber , e.g. including a manifold coupling two parallelly aligned syringes through separate channels to a common discharge assembly surgical glue applicators A61B17/00491
• CPC Class Codes: A61M 5/31511 Piston or piston-rod constructions, e.g. connection of piston with piston-rod A61M5/5066 takes precedence
• CPC Class Codes: A61M 5/31513 Piston constructions to improve sealing or sliding
• CPC Class Codes: A61M 5/31515 Connection of piston with piston rod

Abstract

A syringe includes a body and a plunger movably disposed within the body. The syringe may be used with an injector including a drive member. The drive member preferably includes at least one pin adapted to form a retractable abutting connection with an interior of a plunger to enable the drive member to retract the plunger with the body of the syringe.

Claims

1-2. -2. (canceled)

3. A syringe comprising:

a syringe body; and

a plunger movably disposed within the syringe body, the plunger comprising;

an annular base member comprising a cylindrical wall extending in a longitudinal direction and having a proximal end, a distal end, and a circumferentially continuous inner surface and an outer surface between the proximal end and the distal end,

a retaining shoulder recessed within the cylindrical wall between the extending around the circumference of the inner surface of the cylindrical wall; and

a plurality of flanges extending proximally from the retaining shoulder and projecting radially inwardly from the inner surface of the cylindrical wall.

8-1. The syringe of claim 1, wherein the plurality of flanges are configured to engage an abutment section of a piston distally from a circumferential ledge at the proximal end of the cylindrical wall.

14. A plunger configured for being movably disposed within a body of a syringe, the plunger comprising:

an annular base member comprising a cylindrical wall extending in a longitudinal direction and having a proximal end, a distal end, and a circumferentially continuous inner surface and an outer surface between the proximal end and the distal end,

a retaining shoulder recessed within the cylindrical wall and extending around the circumference of the inner surface of the cylindrical wall; and

a plurality of flanges extending proximally from the retaining shoulder and projecting radially inwardly from the inner surface of the cylindrical wall.