POSITIVE DISPLACEMENT FLUID LOCK PORT

• US 20090005759A1
• Filed: 06/18/2008
• Published: 01/01/2009
• Est. Priority Date: 06/27/2007
• Status: Active Grant

• Current Assignee: Kpr U.S., LLC (Cardinal Health, Inc.)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Chelak, Todd M.
• Granted Patent: US 7,896,863 B2
• Time in Patent Office: Days
• US Class Current: 604/533
• CPC Class Codes: A61M 2039/263 where the fluid space within the valve is decreasing upon disconnection
• CPC Class Codes: A61M 39/02 Access sites
• CPC Class Codes: A61M 39/26 Valves closing automatically on disconnecting the line and opening on reconnection thereof check valves A61M39/24

Abstract

Positive displacement fluid lock ports for use in combination with an indwelling catheter and a syringe during a flushing/locking procedure are provided. The fluid lock port includes a housing having a distal and a proximal end; a resilient conduit supported within the housing, wherein the conduit defines a lumen therethrough; and at least one biasing member supported in the housing and being operatively associatable with the resilient conduit. The at least one biasing member has a first condition restrained from deforming the resilient conduit and a second condition operatively engaged with the resilient conduit to at least partially occlude the lumen of the resilient conduit.

Claims

1. A fluid lock port for inter-connection between a first medical device providing a flushing and/or locking fluid and a second medical device requiring a flushing and/or locking fluid, the fluid lock port comprising:

a housing having a distal and a proximal end;

a resilient conduit supported within the housing, wherein the conduit defines a lumen therethrough; and

at least one biasing member supported in the housing and being operatively associatable with the resilient conduit, wherein the at least one biasing member has a first condition restrained from deforming the resilient conduit and a second condition operatively engaged with the resilient conduit to at least partially occlude the lumen of the resilient conduit.

2. The fluid lock port according to claim 1, wherein the at least one biasing member is a resilient ring disposed about the resilient conduit wherein the resilient ring includes a substantially circular biased condition and a substantially ovular un-biased condition.

3. The fluid lock port according to claim 2, wherein the housing includes a shoulder configured to support the resilient ring in the biased condition out of engagement with the resilient conduit.

4. The fluid lock port according to claim 3, further comprising at least one actuation member configured to move the resilient ring off of the shoulder of the housing and onto the resilient conduit.

5. The fluid lock port according to claim 4, wherein each actuation member is a pin slidably supported in the housing, wherein each actuation member has a first condition in which each actuation member does not extend over the shoulder of the housing and a second condition in which each actuation member at least partially extends over the shoulder of the housing.

6. The fluid lock port according to claim 4, wherein each actuation member is configured for actuation upon connection of the housing to the first medical device.

7. The fluid lock port according to claim 3, wherein the resilient ring is prevented from movement from the first condition to the second condition by a portion of the first medical device that extends into the lumen of the resilient conduit, and wherein the resilient ring is permitted to move to the second condition upon removal of the portion of the first medical device from within the lumen of the resilient conduit.

8. The fluid lock port according to claim 1, wherein the biasing member comprises a pair of biasing arms disposed on opposite sides of the resilient conduit, wherein each biasing arm has a first biased condition out of engagement with the resilient conduit and a second unbiased condition wherein the pair of biasing arms operatively engage the resilient conduit to at least partially occlude the lumen of the resilient conduit therebetween.

9. The fluid lock port according to claim 8, further comprising at least one latch arm configured to retain each of the pair of biasing arms in the first biased condition.

10. The fluid lock port according to claim 9, wherein each latch arm is configured for actuation upon connection of the housing to the medical device providing at least one of the flushing and locking fluid.

11. The fluid lock port according to claim 10, wherein each biasing arm is prevented from movement from the first condition to the second condition by a portion of the first medical device that extends into the lumen of the resilient conduit, and wherein each biasing arm is permitted to move to the second condition upon removal of the portion of the first medical device from within the lumen of the resilient conduit.

12. The fluid lock port according to claim 1, further comprising a seal disposed across the lumen of the resilient conduit.

13. The fluid lock port according to claim 1, wherein the at least partial occlusion of the lumen results in a movement of fluid from a distal end of the second medical device.

14. The fluid lock port according to claim 1, wherein the fluid lock port is connectable to the first medical device prior to a connection to the second medical device.

15. A medical flushing and/or locking system, comprising:

a syringe having a nose; and

a fluid lock port configured to selective connection to the syringe, the fluid lock portion including;

a housing having a proximal end configured for selective coupling with the syringe;

a resilient conduit supported within the housing, wherein the conduit defines a lumen therethrough, wherein the nose of the syringe enters into the lumen of the resilient conduit when the fluid lock port is coupled to the syringe; and

at least one biasing member supported in the housing and being operatively associatable with the resilient conduit, wherein the at least one biasing member has a first condition out of engagement with the resilient conduit and a second condition operatively engaged with the resilient conduit to at least partially occlude the lumen of the resilient conduit when the fluid lock port is uncoupled from the syringe.

16. The medical flushing and/or locking system according to claim 15, wherein the at least one biasing member is a resilient ring disposed about the resilient conduit, wherein the resilient ring includes a substantially circular biased condition and a substantially ovular un-biased condition.

17. The medical flushing and/or locking system according to claim 16, wherein the housing includes a shoulder configured to support the resilient ring in the biased condition.

18. The medical flushing and/or locking system according to claim 17, further comprising at least one actuation member configured to move the resilient ring off of the shoulder of the housing and onto the resilient conduit.

19. The medical flushing and/or locking system according to claim 18, wherein each actuation member is a pin slidably supported in the housing, wherein each actuation member has a first condition in which each actuation member does not extend over the shoulder of the housing and a second condition in which each actuation member extends over the shoulder of the housing.

20. The medical flushing and/or locking system according to claim 18, wherein each actuation member is configured for actuation upon connection of the housing to the syringe.

21. The medical flushing and/or locking system according to claim 16, wherein the resilient ring is prevented from movement from the biased condition to the un-biased condition by the nose of the syringe extending into the lumen of the resilient conduit, and wherein the resilient ring is permitted to move to the un-biased condition upon removal of the nose of the syringe from within the lumen of the resilient conduit.

22. The medical flushing and/or locking system according to claim 15, further comprising a seal disposed across the lumen of the resilient conduit.

23. The medical flushing and/or locking system according to claim 15, wherein the at least partial occlusion of the lumen results in a movement of fluid from a distal end of the resilient conduit.

24. A fluid lock port for inter-connection between a first medical device providing a flushing and/or locking fluid and a second medical device requiring a flushing and/or locking fluid, the fluid lock port comprising:

a housing being configured for selective fluid connection at one end to the first medical device and at a second end to the second medical device, the housing containing a resilient conduit which can establish fluid communication between the first and second medical devices, and including a biasing member restrained from deforming the conduit while the housing is connected to the first medical device;

wherein the fluid lock port is configured to create a positive displacement of the flushing and/or locking fluid during a disconnection of the first medical device which removes restraint from the biasing member thereby causing deformation of the conduit.

25. The fluid lock port according to claim 24, wherein the fluid lock port is connectable to the first medical device prior to a connection to the second medical device.