Encoding of syringe information

• US 6,743,202 B2
• Filed: 06/22/2001
• Issued: 06/01/2004
• Est. Priority Date: 06/15/1998
• Status: Expired due to Fees

• Current Assignee: Bayer Medical Care Inc. (Bayer AG)
• Original Assignee: Medrad Incorporated (Bayer AG)
• Inventors: Uber, Arthur E., Hirschman, Alan D.
• Primary Examiner(s): Casler, Brian L.
• Assistant Examiner(s): MAYNARD, JENNIFER J
• Application Number:
  US09/887,619
• Publication Number:
  US 20010034506A1
• Time in Patent Office: 1,075 Days
• Field of Search: 604/131, 604/151, 604/153, 604/154, 604/152, 604/218, 604/227, 604/228, 604/207, 604/189, 604/208, 604/246, 604/118, 604/121, 120/DIG.1, 340/571, 340/572.1, 340/572.5, 340/572.7, 340/572.8
• US Class Current: 604/131
• CPC Class Codes: A61M 2005/14553 comprising a pressure jacket
• CPC Class Codes: A61M 2205/6018 providing set-up signals for the apparatus configuration
• CPC Class Codes: A61M 2205/6027 Electric-conductive bridges closing detection circuits, with or without identifying elements, e.g. resistances, zener-diodes
• CPC Class Codes: A61M 2205/6036 characterised by physical shape, e.g. array of activating switches
• CPC Class Codes: A61M 2205/6054 Magnetic identification systems
• 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 5/3146 Priming, e.g. purging, reducing backlash or clearance
• 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 5/31515 Connection of piston with piston rod

Abstract

Apparatuses for sharing information on syringe configuration between syringes and injector systems comprise a storage system to store encoded information on syringe configuration. The encoded information is readable by a detection circuit in an injector. In one embodiment, the storage system is an electronic storage system in which information relevant to the syringe configuration is encoded. A method comprises the step of conveying syringe configuration information to a detector in an injector for use with the syringe.

Claims

1. An encoded element for use with a syringe and an injector in communication with a detector comprising a plurality of electrically conductive readout contact members, the encoded element comprising:

an attachment mechanism adapted to detachably connect the encoded element to a plunger of the syringe or a drive member of the injector; and

a storage system comprising a plurality of electrically conductive code contact members, the storage system being operable to store encoded syringe information readable by the detector when the syringe is engaged with the injector and to convey the syringe information to the detector when contact is made between the storage system and the detector.

2. The encoded element of claim 1 wherein the plurality of code contact members is in communication with a memory, the memory being readable by the detector.

3. The encoded element of claim 2 wherein the memory is a ROM, an EPROM or an EEPROM memory.

4. The encoded element of claim 1 wherein the position of the plunger within the syringe is determined when the storage system contacts the detector.

5. The encoded element of claim 1 wherein the attachment mechanism is adapted to detachably connect the encoded element to the plunger of the syringe.

6. A syringe for use with a powered injector comprising a drive member and a detector, the syringe comprising:

an elongated body;

a plunger slidably disposed within the elongated body and operable to be driven by the drive member to inject a fluid into a patient; and

a member adapted to be connected to the plunger, the member comprising a mechanism for detachably connecting the member to the plunger and an information storage system operable to convey syringe information to the detector when contact is made between the information storage system and the detector, wherein the position of the plunger within the syringe is determined when the information storage system contacts the detector.

7. The syringe of claim 6 wherein the information storage system comprises at least one electrically conductive code contact member and the detector comprises at least one electrically conductive readout contact member.

8. The syringe of claim 7 wherein the at least one code contact member comprises a plurality of code contact members.

9. The syringe of claim 7 wherein the at least one code contact member is in communication with a memory, the memory being readable by the detector.

10. The syringe of claim 9 wherein the memory is a ROM, an EPROM or an EEPROM memory.

11. A syringe for use with a powered injector comprising a drive member and a detector comprising at least one electrically conductive readout contact member, the syringe comprising:

an elongated body;

a plunger slidably disposed within the elongated body and operable to be driven by the drive member to inject a fluid into a patient; and

a member adapted to be connected to the plunger, the member comprising a mechanism for connecting the member to the plunger and an information storage system operable to convey syringe information to the detector when contact is made between the information storage system and the detector, the information storage system comprising a plurality of electrically conductive code contact members in communication with a ROM, an EPROM or an EEPROM memory, the memory being readable by the detector.

12. The syringe of claim 11 wherein the position of the plunger within the syringe is determined when the information storage system contacts the detector.

13. The syringe of claim 11 wherein the connection mechanism of the member is adapted to detachably connect the member to the plunger of the syringe.

14. An encoded element for use with a syringe and an injector in communication with a detector, the encoded element comprising:

an attachment mechanism adapted to detachably connect the encoded element to a plunger of the syringe or a drive member of the injector; and

a storage system operable to store encoded syringe information readable by the detector when the syringe is engaged with the injector, wherein the position of the plunger within the syringe is determined when the storage system contacts the detector.

15. The encoded element of claim 14 wherein the storage system is operable to convey syringe information to the detector when contact is made between the storage system and the detector.

16. The encoded element of claim 15 wherein the storage system comprises at least one electrically conductive code contact member and the detector comprises at least one electrically conductive readout contact member.

17. The encoded element of claim 16 wherein the at least one code contact member comprises a plurality of code contact members.

18. The encoded element of claim 16 wherein the at least one code contact member is in communication with a memory, the memory being readable by the detector.

19. The encoded element of claim 18 wherein the memory is a ROM, an EPROM or an EEPROM memory.

20. An encoded element for use with a syringe and an injector in communication with a detector, the encoded element comprising:

an attachment mechanism adapted to detachably connect the encoded element to a plunger of the syringe or a drive member of the injector; and

a storage system comprising a plurality of tuned circuits operable to store encoded syringe information readable by the detector when the syringe is engaged with the injector, wherein the storage system is operable to convey syringe information to the detector without physical contact being made between the storage system and the detector.

21. The encoded element of claim 20 wherein the tuned circuits comprise resonant circuits.

22. The encoded element of claim 21 wherein the tuned circuits are disposed on a printed circuit board.