Disposable Front Loadable Syringe and Injector

• US 20080208126A1
• Filed: 04/23/2008
• Published: 08/28/2008
• Est. Priority Date: 11/17/2004
• Status: Active Grant

• Current Assignee: Liebel-Flarsheim Company (Mallinckrodt plc)
• Original Assignee: Mallinckrodt Incorporated (Mallinckrodt plc)
• Inventors: FAGO, Frank M., LEWIS, Frank M.
• Granted Patent: US 8,262,644 B2
• Time in Patent Office: Days
• US Class Current: 604/154
• CPC Class Codes: A61M 2005/14553 comprising a pressure jacket
• CPC Class Codes: A61M 2005/3103 Leak prevention means for distal end of syringes, i.e. syringe end for mounting a needle
• CPC Class Codes: A61M 5/14546 Front-loading type injectors
• CPC Class Codes: A61M 5/14566 with a replaceable reservoir for receiving a piston rod of the pump
• CPC Class Codes: A61M 5/344 using additional parts, e.g. clamping rings or collets
• CPC Class Codes: A61M 5/346 friction fit A61M5/344 takes precedence

Abstract

A syringe for an injector that has at its nozzle end a connection to the fluid delivery tubing that prevents, reduces, or eliminates fluid leaks, by virtue of a ridge on the external surfaces of the connector which engage to tubing. Furthermore, the syringe and injector are configured to permit the syringe to be oriented in more than one manner on the injector.

Claims

1. A method of using a syringe with a connector having a taper comprising a proximal end, an opposing distal end, and an annular first ridge disposed about a peripheral circumference of the taper, the method comprising:

disposing the taper of the connector into an orifice of a mating connector, such that the annular first ridge of the taper is in contact with an inner surface of the mating connector.

2. The method of claim 1, wherein the first annular ridge is the only portion of the taper that is in contact with the inner surface of the mating connector upon completion of the disposing.

3. The method of claim 1, wherein the disposing comprises disposing the taper of the tubing connector into the connecting end of a medical tube such that both the annular first ridge and an annular second ridge of the taper are in contact with the inner surface of the medical tube.

4. The method of claim 3, wherein the first annular ridge and the second annular ridge are the only portions of the taper that are in contact with the medical tubing upon completion of the disposing.

5. The method of claim 1, further comprising:

mounting the syringe onto a medical fluid injector.

6. The method of claim 5, wherein the mounting comprises inserting the syringe into a pressure jacket of the medical fluid injector.