Disposable front loadable syringe and injector

• US 8,262,644 B2
• Filed: 04/23/2008
• Issued: 09/11/2012
• Est. Priority Date: 11/17/2004
• Status: Active Grant

• Current Assignee: Liebel-Flarsheim Company (Mallinckrodt plc)
• Original Assignee: Mallinckrodt LLC (Mallinckrodt plc)
• Inventors: Fago, Frank M., Lewis, Frank M.
• Primary Examiner(s): BOUCHELLE, LAURA A
• Application Number:
  US12/108,007
• Publication Number:
  US 20080208126A1
• Time in Patent Office: 1,602 Days
• Field of Search: 604/131, 604/523, 604/533, 604/181, 285/92, 285/332
• US Class Current: 604/533
• 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 that includes a connector having a taper extending from a proximal toward a distal end, the taper comprising at least one annular ridge disposed about and extending away from a peripheral circumference thereof, and spaced from the proximal end of the taper, and an internal threaded section disposed about and substantially immobile relative to the taper, the method comprising:

disposing at least a portion of a mating connector inside of the internal threaded section of the connector; and

inserting the distal end of the taper of the connector into an orifice of the mating connector while at least a portion of the mating connector is located inside of the internal threaded section of the connector such that the mating connector extends closer to the proximal end of the taper than the at least one annular ridge, and the annular ridge is surrounded by an interior surface of the mating connector and is the only portion of the taper that is in contact with an inner surface of the mating connector,

wherein the disposing is initiated prior to initiation of the inserting.

2. The method of claim 1, wherein the taper of the connector comprises a proximal end and an opposing distal end, and the at least one annular ridge is spaced from the proximal end.

3. The method of claim 1, wherein the taper of the connector comprises a proximal end and an opposing distal end, and the at least one annular ridge is located between the proximal end and the distal end.

4. The method of claim 1, wherein the taper of the connector comprises a proximal end and an opposing distal end, and the at least one annular ridge is located at the distal end.

5. The method of claim 1, wherein the at least one annular ridge comprises a first annular ridge and a second annular ridge.

6. The method of claim 5, wherein the taper of the connector comprises a proximal end and an opposing distal end, and the first and second annular ridges are spaced from the proximal end.

7. The method of claim 5, wherein the taper of the connector comprises a proximal end and an opposing distal end, and the first annular ridge is located between the proximal end and the distal end, and the second annular ridge is located at the distal end.

8. The method of claim 1, wherein the disposing comprises an outer surface of the mating connector engaging the internal threaded section of the connector.

9. The method of claim 8, wherein the engaging is initiated prior to initiation of the inserting.

10. The method of claim 1, further comprising:

mounting the syringe onto a medical fluid injector.

11. The method of claim 10, wherein the mounting comprises inserting the syringe into a pressure jacket of the medical fluid injector.