Protective priming cap for self-sealing male Luer valve

• US 7,766,897 B2
• Filed: 01/02/2006
• Issued: 08/03/2010
• Est. Priority Date: 01/02/2006
• Status: Active Grant

• Current Assignee: Carefusion 303 Incorporated (Becton, Dickinson & Co)
• Original Assignee: Carefusion 303 Incorporated (Becton, Dickinson & Co)
• Inventors: Ramsey, Michael D., Whitley, Kenneth W., Phillips, John C.
• Primary Examiner(s): Sirmons; Kevin C
• Assistant Examiner(s): Anderson; Michael J
• Application Number:
  US11/324,410
• Publication Number:
  US 20070156118A1
• Time in Patent Office: 1,674 Days
• Field of Search: 604533-539, 604/167, 604/168, 604/256, 604/122, 137/614.05, 137/614.06
• US Class Current: 604/533
• CPC Class Codes: A61M 2039/205 comprising air venting means
• CPC Class Codes: A61M 2205/7536 allowing gas passage, but preventing liquid passage, e.g. liquophobic, hydrophobic, water-repellent membranes
• CPC Class Codes: A61M 39/20 Closure caps or plugs for connectors or open ends of tubes
• CPC Class Codes: A61M 5/385 using hydrophobic filters

Abstract

A cap for use in priming a medical connector that has a distal end at which is disposed a distal connection tip with an aperture through which fluid may flow, and the connector having an internal valve. The cap has a reservoir device with an internal volume and a first opening at a proximal end that is connected with the aperture of the connection tip. The reservoir has a second opening at which is disposed an hydrophobic filter for allowing gases to vent to the atmosphere while retaining liquid in the reservoir device. Over the reservoir device is mounted a slidable housing device used to activate the internal valve of the connector to a flow configuration at which fluid flows from the connector into the reservoir device. The user monitors the reservoir device and when gas has been vented so that only liquid remains, the user slides the housing device.

Claims

1. A cap for a medical connector, the connector having a distal end at which is disposed a distal connection tip, the connection tip having an aperture through which fluid may flow, and the connector having an internal valve, the cap comprising:

a reservoir device having an internal volume, a first opening at a proximal end, and a second opening;

an hydrophobic filter disposed over the second opening of the reservoir device;

wherein the proximal end of the reservoir device is shaped for engaging the connection tip of the connector so that the first opening of the reservoir device may be put into fluid communication with the aperture of the connector, the reservoir device being removable from the connector; and

an outer housing device mounted over the reservoir device and movable in relation thereto, the outer housing device covering the distal connection tip of the connector whereby it provides protection to the distal connection tip, the housing device including an engagement portion disposed to engage the internal valve of the connector;

wherein the outer housing device is movable to a first position at which it covers the distal connection tip of the connector but the engagement portion does not open the internal valve of the connector and is movable to a second position at which the outer housing device covers the distal connection tip of the connector and the engagement portion opens the internal valve of the connector so that fluid flow may occur between the reservoir device and the connector, the outer housing device being removable from the connector.

2. The cap of claim 1 wherein the reservoir device is formed of a transparent material so that a level of liquid within the reservoir device may be seen.

3. The cap of claim 2 wherein the outer housing device includes a window through which the level of liquid in the reservoir device can be seen through the outer housing device.

4. The cap of claim 2 wherein the outer housing device is formed at least partially of a transparent material so that the level of liquid in the reservoir device can be seen through the outer housing device.

5. The cap of claim 1 wherein the distal connection tip comprises a male Luer tip and the reservoir device has a shape complementary to the male Luer tip allowing the reservoir tip to mate with the male Luer tip for communication of fluid between the two.

6. The cap of claim 1 wherein the outer housing device is slidable along the reservoir device between the first and second positions.

7. The cap of claim 1 wherein the reservoir device is attached to the connector.

8. The cap of claim 7 wherein the reservoir device is threaded to the connector to establish attachment.

9. The cap of claim 8 further comprising a tactile structure configured to provide a tactile feedback to a clinician rotating the reservoir device in relation to the connector when the reservoir device has been threadably rotated sufficiently to establish a seal with the connector.

10. The cap of claim 1 wherein the reservoir device comprises an inner surface having irregularities configured to, increase the surface tension of liquid within the reservoir whereby escape of the liquid from the reservoir device is inhibited.

11. The cap of claim 1 wherein the reservoir device is assembled within the outer housing device to form the cap and is removed from the connector as one piece.

12. The cap of claim 1 further comprising a lock device configured to retain the outer housing device in a position at which an internal valve of the connector is activated to a flow position.

13. A method for priming a medical connector, the connector having a distal end at which is disposed a distal connection tip, the connection tip having an aperture through which fluid may flow, and the connector having an internal valve, the method comprising:

mounting a reservoir device having an internal volume, a first opening at a proximal end, and a second opening at which is disposed an hydrophobic filter at the connection tip of the connector with the first opening in fluid communication with the aperture of the connection tip;

activating the internal valve of the connector to a flow configuration while covering the connection tip;

allowing fluid to flow through the connector and into the reservoir;

de-activating the internal valve of the connector to a non-flow configuration while covering the connection tip; and

removing the reservoir device from the connection tip.

14. The method of claim 13 further comprising moving a housing device mounted over the reservoir device to activate and de-activate the internal valve of the connector.

15. The method of claim 13 further comprising observing the flow of fluid into the reservoir through the reservoir device.

16. The method of claim 15 further comprising:

moving a housing device mounted over the reservoir device to activate and de-activate the internal valve of the connector; and

monitoring the flow of fluid into the reservoir through an opening formed in the housing device.

17. The method of claim 13 further comprising storing in the reservoir device a quantity of liquid approximately equal to a quantity of fluid drawn back into the connector when its internal valve is de-activated.