Fluid path containing a pressure isolation valve

• US 9,764,081 B2
• Filed: 05/08/2014
• Issued: 09/19/2017
• Est. Priority Date: 10/18/2000
• Status: Expired due to Term

• Current Assignee: Bayer Healthcare LLC (Bayer AG)
• Original Assignee: Bayer Healthcare LLC (Bayer AG)
• Inventors: Trombley, III, Frederick W., Reilly, David M., Hirschman, Alan D., Griffiths, David M., Callan, Gerald W., Pedraza, Luis A., Kwo, Jennie, Zirps, Christopher T., Beaulieu, Roderick H.
• Primary Examiner(s): Bosworth, Kami A
• Application Number:
  US14/272,725
• Publication Number:
  US 20140249485A1
• Time in Patent Office: 1,230 Days
• CPC Class Codes: A61M 2005/1403 Flushing or purging
• CPC Class Codes: A61M 2205/582 by tactile feedback
• CPC Class Codes: A61M 2209/01 Remote controllers for specific apparatus
• CPC Class Codes: A61M 31/005 for contrast media
• CPC Class Codes: A61M 39/22 Valves or arrangement of valves A61M39/02, A61M39/0247, A61M39/16 take precedence; regulating valves in infusion systems A61M5/16881; in devices worn by the patient for the reception of urine, faeces, catamenial or other discharge, or in colostomy devices A61F5/4405
• CPC Class Codes: A61M 5/007 for contrast media
• CPC Class Codes: A61M 5/14546 Front-loading type injectors
• CPC Class Codes: A61M 5/16827 controlling delivery of multiple fluids, e.g. sequencing, mixing or via separate flow-paths infusion of multiple fluids without using a controller A61M5/1407
• CPC Class Codes: Y10T 137/7727 Excessive flow cut-off

Abstract

A fluid path set including a multi-patient use section adapted for connection with a pump device and a source of injection fluid, and a per-patient use section adapted for removable fluid communication with the multi-patient use section. The per-patient use section includes a pressure isolation mechanism having a first port adapted for connection to the pump device via the multi-patient use section, a second port adapted for connection to a patient, and a pressure isolation port adapted for connection to a source of medical fluid via the multi-patient use section. The per-patient use section includes a valve member biased to a normally open position permitting fluid communication between the first port, the second port, and the pressure isolation port, and movable to a closed position to close the pressure isolation port when fluid pressure reaches a predetermined pressure level sufficient to overcome a biasing force applied to the valve member.

Claims

1. A fluid path set for use in a fluid delivery system, comprising:

a multi-patient use section adapted for connection to a pump device and to a source of injection fluid; and

a per-patient use section adapted for removable fluid communication with the multi-patient use section, the per-patient use section comprising a pressure isolation mechanism, wherein the pressure isolation mechanism comprises;

a first port adapted for connection to the pump device via the multi-patient use section, a second port adapted for connection to a patient, a pressure isolation port adapted for connection to a source of medical fluid via the multi-patient use section, a lumen connecting the first port and the second port, and a valve member biased to a normally open position permitting fluid communication between the first port, the second port, and the pressure isolation port, and movable to a closed position to close the pressure isolation port when fluid pressure in the lumen reaches a predetermined pressure level sufficient to overcome a biasing force applied to the valve member.

2. The fluid path set of claim 1, wherein the multi-patient use section further comprises a multi-position valve adapted to selectively isolate the pump device, the source of the injection fluid, and the per-patient use section.

3. The fluid path set of claim 1, further comprising a pressure transducer associated with the pressure isolation port.

4. The fluid path set of claim 1, wherein the multi-patient use section further comprises an intervening drip chamber between the source of medical fluid and the pressure isolation port.

5. The fluid path set of claim 1, wherein the multi-patient use section is connectable to the per-patient use section by a pair of connectors.

6. The fluid path set of claim 1, wherein the lumen is in fluid communication with an automated or a manual valve having a waste port.

7. The fluid path set of claim 1, further comprising a spike for connecting the multi-patient use section with the source of the injection fluid.

8. The fluid path set of claim 1, wherein the valve member comprises a spring that applies the biasing force to maintain the valve member in the normally open position.

9. The fluid path set of claim 1, wherein the valve member comprises a sealing portion for sealing the pressure isolation port when the valve member is in the closed position.

10. The fluid path set of claim 9, further comprising a sealing seat that contacts the sealing portion of the valve member when the valve member is in the closed position.

11. The fluid path set of claim 1, wherein the valve member is linearly movable between the normally open position and the closed position.

12. The fluid path set of claim 1, wherein, in the normally open position, the pressure isolation mechanism is configured for permitting fluid flow through the lumen and permitting monitoring of a blood pressure of the patient.

13. A pressure isolation mechanism, comprising:

a housing defining a lumen with a first port, a second port, and a pressure isolation port; and

a valve member disposed within the housing, the valve member biased to a normally open position permitting fluid communication between the first port, the second port, and the pressure isolation port, and movable to a closed position to close the pressure isolation port when fluid pressure in the lumen reaches a predetermined pressure level sufficient to overcome a biasing force applied to the valve member.

14. The pressure isolation mechanism of claim 13, further comprising a pressure transducer associated with the pressure isolation port.

15. The pressure isolation mechanism of claim 13, wherein the lumen is in fluid communication with an automated or a manual valve having a waste port.

16. The pressure isolation mechanism of claim 13, wherein the valve member comprises a spring that applies the biasing force to maintain the valve member in the normally open position.

17. The pressure isolation mechanism of claim 13, wherein the valve member comprises a sealing portion for sealing the pressure isolation port when the valve member is in the closed position.

18. The pressure isolation mechanism of claim 17, wherein the housing comprises a sealing seat that contacts the sealing portion of the valve member when the valve member is in the closed position.

19. The pressure isolation mechanism of claim 13, wherein the valve member is linearly movable between the normally open position and the closed position.

20. The pressure isolation mechanism of claim 13, wherein, in the normally open position, the pressure isolation mechanism is configured for permitting fluid flow through the lumen and permitting monitoring of a patient'"'"'s blood pressure.