Automatic manifold for vascular catheter

• US 20020038105A1
• Filed: 10/23/2001
• Published: 03/28/2002
• Est. Priority Date: 09/23/1998
• Status: Active Grant

• Current Assignee: Mayo Foundation For Medical Education And Research (Mayo Clinic)
• Original Assignee: Mayo Foundation For Medical Education And Research (Mayo Clinic)
• Inventors: Berry, David, Ellis, Donald G., Schwartz, Robert S., Holmes, David R.
• Granted Patent: US 6,638,258 B2
• Time in Patent Office: Days
• US Class Current: 604/247
• CPC Class Codes: A61M 2039/2473 Valve comprising a non-deformable, movable element, e.g. ball-valve, valve with movable stopper or reciprocating element
• CPC Class Codes: A61M 2039/2486 Guided stem, e.g. reciprocating stopper
• CPC Class Codes: A61M 2039/2493 Check valve with complex design, e.g. several inlets and outlets and several check valves in one body
• CPC Class Codes: A61M 39/24 Check- or non-return valves
• CPC Class Codes: Y10T 137/87571 Multiple inlet with single outlet
• CPC Class Codes: Y10T 137/87652 With means to promote mixing or combining of plural fluids
• CPC Class Codes: Y10T 137/87684 Valve in each inlet
• CPC Class Codes: Y10T 137/88054 Direct response normally closed valve limits direction of flow

Abstract

An automatic manifold for a catheter assembly. Valve means automatically open and close flow between a liquid supply port for connection to injection means and a liquid delivery port for communication with the catheter assembly. A pressure sensor is integrated into the manifold. The manifold also includes a quick-disconnect coupling mechanism for a liquid supply port.

Claims

1. An automatic manifold for a catheter assembly, comprising:

(a) a housing having a liquid delivery port for communication with the catheter assembly and a liquid supply port for connection to an injector;

(b) a chamber defined in said housing in fluid communication with said liquid delivery and supply ports; and

(c) a one-way valve for controlling flow between said supply and delivery ports and through said chamber, biased toward a closed position, and constructed and arranged to move to an open position when liquid is forced into said supply port under pressure.

2. An automatic manifold according to claim 1, wherein said one-way valve is on an upstream side of said chamber.

3. An automatic manifold according to claim 2, wherein said one-way valve separates said chamber from a second chamber located on an upstream side of said one-way valve, and said second chamber has a plurality of liquid supply ports.

4. An automatic manifold according to claim 3, wherein at least one of said liquid supply ports has associated with it a second one-way valve, biased toward a closed position, and constructed and arranged to move to an open position when liquid is forced by said injector from said one supply port to said second chamber.

5. An automatic manifold according to claim 1, further including a second liquid supply port constructed and arranged for receiving contrast media.

6. An automatic manifold according to claim 1, further including a second liquid supply port constructed and arranged for receiving saline.

7. An automatic manifold according to claim 1, further including a second liquid supply port constructed and arranged for receiving drugs.

8. An automatic manifold according to claim 1, wherein said injector is a power injector.

9. An automatic manifold according to claim 1, wherein said injector is a syringe.

10. An automatic manifold according to claim 1, further including a pressure port connecting said first chamber to a pressure monitor.

11. An automatic manifold according to claim 10, wherein said pressure monitor comprises a pressure sensor integrated as part of the manifold.

12. An automatic manifold according to claim 1, wherein said housing has a plurality of liquid supply ports.

13. An automatic manifold according to claim 12, wherein said plurality of liquid supply ports includes a saline port and a contrast media port, at least one of which has associated with it a second one-way valve.

14. An automatic manifold according to claim 1, wherein said one-way valve comprises an elastomeric material.

16. An automatic manifold according to claim 15, wherein said valve means comprise a mechanical one-way valve.

17. An automatic manifold according to claim 15, further including a first chamber defined in said manifold in fluid communication with said liquid delivery and supply ports, wherein said valve means are on an upstream side of said first chamber.

18. An automatic manifold according to claim 17, wherein said valve means separate said first chamber from a second chamber located on an upstream side of said valve means, and said second chamber has a plurality of liquid supply ports.

19. An automatic manifold according to claim 15, wherein said automatic manifold has a plurality of liquid supply ports, including a saline port and a contrast media port, operating in conjunction with said valve means comprising one or more separate valve means, to automatically open and close flow between said liquid supply ports and said liquid delivery port.

20. An automatic manifold according to claim 15, further including a pressure sensor integrated as part of the manifold.

21. An automatic manifold according to claim 15, wherein said injection means comprises a power injector.

22. An automatic manifold according to claim 15, wherein said injection means comprises a syringe.

15. An automatic manifold for a catheter assembly, comprising:

(a) a liquid delivery port for communication with the catheter assembly;

(b) a liquid supply port for connection to injection means; and

(c) valve means for automatically opening flow between said supply and delivery ports when liquid is forced into said supply port under pressure, and for automatically closing flow between said supply and delivery ports when liquid no longer is forced into said supply port.