Positive displacement fluid lock port

• US 7,896,863 B2
• Filed: 06/18/2008
• Issued: 03/01/2011
• 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.
• Primary Examiner(s): Sirmons; Kevin C
• Assistant Examiner(s): CARPENTER, WILLIAM R
• Application Number:
  US12/141,178
• Publication Number:
  US 20090005759A1
• Time in Patent Office: 986 Days
• Field of Search: 604/256, 604/167, 604/283, 604/246, 604/201, 604/203, 604/237, 604/244, 604/411, 604/415, 604/533, 2511491-1497
• 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;

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;

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 oval un-biased condition; and

wherein the housing includes a shoulder configured to support the resilient ring in the biased condition out of engagement with the resilient conduit; and

at least one actuation member configured to move the resilient ring off of the shoulder of the housing and onto the resilient conduit, wherein each actuation member is a pin slidably supported in the housing, wherein each one 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 one actuation member at least partially extends over the shoulder of the housing.

2. The fluid lock port according to claim 1, wherein each actuation member is configured for actuation upon connection of the housing to the first medical device.

3. The fluid lock port according to claim 1, 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.

4. The fluid lock port according to claim 1, 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.

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

6. 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.

7. 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.

8. 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 each biasing member is a resilient ring disposed about the resilient conduit, wherein the resilient ring includes a substantially circular biased condition and a substantially oval un-biased condition; and

wherein the housing includes a shoulder configured to support the resilient ring in the biased condition out of engagement with the resilient conduit; and

at least one actuation member configured to move the resilient ring off of the shoulder of the housing and onto the resilient conduit, 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;

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.

9. The fluid lock port according to claim 8, wherein the fluid lock port is connectable to the first medical device prior to a connection to the second medical device.