Fluid management and component detection system

• US 6,626,862 B1
• Filed: 04/04/2000
• Issued: 09/30/2003
• Est. Priority Date: 04/04/2000
• Status: Expired due to Term

• Current Assignee: ACIST Medical Systems Incorporated (Bracco SPA)
• Original Assignee: ACIST Medical Systems Incorporated (Bracco SPA)
• Inventors: Wilson, Robert F., Liu, Jiyan, Duchon, Douglas J.
• Primary Examiner(s): Look, Edward K.
• Assistant Examiner(s): Edgar, Richard A.
• Application Number:
  US09/542,422
• Time in Patent Office: 1,274 Days
• Field of Search: 604/110, 604/247, 604/248, 604/65, 604/67, 604/137, 604/511, 604/512.1, 604/843, 604/152, 604/151, 604/155, 128/DIG.1, 128/DIG.12, 128/DIG.13
• US Class Current: 604/110
• CPC Class Codes: A61M 2205/11 with means for preventing cross-contamination when used for multiple patients
• CPC Class Codes: A61M 5/007 for contrast media
• CPC Class Codes: A61M 5/14 Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
• CPC Class Codes: A61M 5/14216 Reciprocating piston type
• CPC Class Codes: A61M 5/14546 Front-loading type injectors
• CPC Class Codes: Y10S 128/13 Infusion monitoring

Abstract

Devices that detect and monitor components and fluid used with an injector system, such as an angiographic injector system, are disclosed. The devices may include mechanical, electrical or software based indexing or keying features to ensure that only compatible components are used on the system. In addition, these devices may also be used to track and/or monitor fluid volume and use during various injection procedures. Single use and multiple use components, conveniently supplied in kits, may also be tracked and/or monitored by the devices of the present invention.

Claims

1. An injector subassembly used with an injector system, said injector subassembly comprising:

a single use portion; and

a multiple use portion;

said single use portion fluidly connected to said multiple use portion, said single use portion including a high pressure tube connected to a catheter connection and said multiple use portion including a syringe connected to a fluid supply reservoir;

said syringe and said high pressure tube being in fluid communication at a predetermined period of operation.

2. The injector subassembly of claim 1 wherein said single use portion includes a three-way stop-cock connecting said high pressure tube to said catheter connection.

3. The injector subassembly of claim 2 wherein said three-way stop-cock includes a patient medication port.

4. The injector subassembly of claim 1 wherein a length of said high pressure tube is related to a pressure drop along said length.

5. The injector subassembly of claim 1 wherein said high pressure tube is made of PVC.

6. The injector subassembly of claim 1 wherein said single use portion includes a patient manifold that connects said syringe to said high pressure tube.

7. The injector subassembly of claim 6 wherein said patient manifold includes a spring biased spool valve which normally connects a pressure transducer to a patient port.

8. The injector subassembly of claim 6 wherein said single use portion includes a pressure transducer connected to said patient manifold.

9. The injector subassembly of claim 8 wherein said single use portion includes a saline subassembly attached to said pressure transducer.

10. The injector subassembly of claim 9 wherein said saline subassembly includes a saline check valve, saline tubing, saline spike and saline supply.

11. The injector subassembly of claim 1 wherein said multiple use portion includes a one-way valve connecting said syringe to said fluid supply reservoir.

12. The injector subassembly of claim 11 wherein said multiple use portion includes a fluid container spike connecting said one-way valve to said fluid supply reservoir.

13. The injector subassembly of claim 11 wherein said one-way valve includes a weighted ball that when seated in a lower position permits air to flow from said syringe body and when seated in an upper position prevents fluid from flowing from said syringe body to said fluid supply reservoir.

14. The injector assembly of claim 1 wherein said multiple use portion is reused up to approximately five times.

15. The injector assembly of claim 1 wherein said multiple use portion is reused on one or more patients without cleaning or sterilizing said multiple use portion between each use.

16. The injector subassembly of claim 1 wherein said single use portion is cleaned and sterilized after being used on said patient or case.

17. The injector subassembly of claim 16 wherein said single use portion is reused after said single use portion is cleaned and sterilized.

18. The injector subassembly of claim 1 wherein said syringe is transparent.

19. The injector subassembly of claim 1 wherein said syringe is made of polycarbonate.

20. The injector subassembly of claim 1 wherein said syringe repeatedly draws in fluid from said supply reservoir.

21. The injector subassembly of claim 1 wherein said single use portion is supplied to a user of said subassembly as a kit.

22. The injector subassembly of claim 1 wherein said multiple use portion is supplied to a user of said subassembly as a kit.

23. A multiple use syringe for use in an injection system, said multiple use syringe comprising:

a syringe body having a distal end, a proximal end and a pumping chamber; and

a syringe plunger located in said pumping chamber and movable along a path from said distal end to said proximal end of said syringe body, said syringe plunger connected to and controlled by a user-interface assembly whereby said syringe plunger automatically disconnects from said syringe body when said syringe body has been used for a maximum number of uses.