System and method for providing information from a syringe to an injector

• US 6,733,478 B2
• Filed: 11/04/2002
• Issued: 05/11/2004
• Est. Priority Date: 08/17/1992
• Status: Expired due to Fees

• Current Assignee: Medrad Incorporated (Bayer AG)
• Original Assignee: Medrad Incorporated (Bayer AG)
• Inventors: Gelblum, Eugene A., Kazousky, Daniel, Reilly, David M., Havrilla, Joseph B.
• Primary Examiner(s): Mendez, Manuel
• Assistant Examiner(s): RODRIGUEZ, CRIS LOIREN
• Application Number:
  US10/287,167
• Publication Number:
  US 20030060754A1
• Time in Patent Office: 554 Days
• Field of Search: 604/65, 604/67, 604/111, 604/118, 604/131, 604/189, 604/154, 604/151, 604/218, 604/152, 604/228, 604/135, 128/DIG.1, 235/375, 235/435, 235/448, 235/454, 235/462, 235/453, 116/227
• US Class Current: 604/189
• CPC Class Codes: A61M 2005/14553 comprising a pressure jacket
• CPC Class Codes: A61M 2205/581 by audible feedback
• CPC Class Codes: A61M 2205/582 by tactile feedback
• CPC Class Codes: A61M 2205/583 by visual feedback
• 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: Y10S 128/01 Motorized syringe

Abstract

A front-loading syringe which comprises a movable plunger for injecting liquid contrast media, is rotatably mountable on a front wall of an injector housing with an interference fit and in sealed relationship with respect thereto, with or without a pressure jacket, by a first-quick release mechanism. At the same time, the plunger is connected to an injector drive mechanism by a second readily releasable mechanism. During the mounting operation, a sensor reads injection information from an indicator device on the syringe and feeds it to an injector control. An audible-and-tactile indicating mechanism also is activated when the syringe is essentially in the desired mounted position. The syringe may include reinforcing ribs, which also function as volumetric gradations, and liquid media presence-or-absence indicating dots which appear circular against a liquid media background and oval-shaped against an air background. An injection end of the syringe comprises an injector portion of reduced diameter inside a screw-threaded attachment portion of larger diameter, and may include loop-shaped reinforcing handle portions.

Claims

1. An injector system comprising:

an injector comprising;

a housing containing a motor operable to drive a piston,

a sensor, and

a control unit in communication with the sensor and the motor; and

a syringe comprising;

a body comprising a front end and a rear end;

a plunger disposed within the body and operable to be driven by the piston of the injector; and

an encoding device on the plunger and operable to provide syringe information to the sensor,

whereby the sensor is operable to read the syringe information provided by the encoding device and to forward the syringe information to the control unit of the injector, the control unit operable to receive the syringe information from the sensor and to control the motor of the injector based on the syringe information.

2. The injector system of claim 1 wherein the encoding device comprises a bar code.

3. The injector system of claim 1 wherein the encoding device comprises an optically readable device.

4. The injector system of claim 1 wherein the syringe information comprises liquid media information.

5. The injector system of claim 1 wherein the syringe information comprises liquid media injection information.

6. The injector system of claim 1, further comprising at least one mounting flange associated with the body.

7. The injector system of claim 6 wherein the at least one mounting flange is associated with the rear end of the body.

8. The injector system of claim 6, further comprising a flange member associated with the body between the at least one mounting flange and the front end of the body.

9. The injector system of claim 6 wherein the injector housing defines at least one retaining flange operable to be engaged by the at least one mounting flange to retain the syringe on the injector.

10. The injector system of claim 1 wherein the syringe information comprises the dimensions of the syringe.

11. The injector system of claim 1 wherein the syringe information comprises the contents of the syringe.

12. The injector system of claim 1 wherein the syringe information comprises flow rates.