Medical connector

• US 8,628,515 B2
• Filed: 03/11/2013
• Issued: 01/14/2014
• Est. Priority Date: 10/25/2006
• Status: Active Grant

• Current Assignee: ICU Medical Incorporated
• Original Assignee: ICU Medical Incorporated
• Inventors: Fangrow, Thomas F. Jr.
• Primary Examiner(s): Bosworth, Kami A
• Application Number:
  US13/794,485
• Publication Number:
  US 20130289534A1
• Time in Patent Office: 309 Days
• Field of Search: 604/246, 604/247, 604/249, 604/256, 604/533, 604/534, 604/535, 604/537, 251/149.1, 251/149.4, 251/149.6, 251/149.7
• US Class Current: 604/533
• CPC Class Codes: A61M 2039/1033 Swivel nut connectors, e.g. threaded connectors, bayonet-connectors
• CPC Class Codes: A61M 2039/1038 Union screw connectors, e.g. hollow screw or sleeve having external threads
• CPC Class Codes: A61M 2039/261 where the fluid space within the valve is increasing upon disconnection
• CPC Class Codes: A61M 2039/263 where the fluid space within the valve is decreasing upon disconnection
• CPC Class Codes: A61M 2039/267 having a sealing sleeve around a tubular or solid stem portion of the connector
• CPC Class Codes: A61M 39/10 Tube connectors; Tube couplings A61M39/02 takes precedence; connecting needles to syringes or hubs A61M5/34; connecting catheter tubes to hubs A61M25/0014
• 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 39/26 Valves closing automatically on disconnecting the line and opening on reconnection thereof check valves A61M39/24

Abstract

A medical connector for use with one or more medical implements. In some embodiments, the connector minimizes or eliminates the retrograde flow of fluid into the connector from one end or port upon the disconnection of a medical implement from the other end or port. In some embodiments, the connector generates a positive flow of fluid out of the connector from one end or port when a medical implement is disconnected from the other end or port.

Claims

1. A medical connector for use with a first and second medical implement, the medical connector comprising:

a housing having a first proximal end and a second distal end;

an inner rigid element positioned within the housing and including at least one opening on a side thereof and a substantially hollow interior with a fluid flow path, said at least one opening extending from an outer surface of said inner rigid element to said hollow interior of said inner rigid element;

a substantially hollow flexible element positioned within the housing, said flexible element comprising at least one inward projection on an inner wall thereof, at least a portion of said inward projection being shaped to fit within said at least one opening in said inner rigid element when said connector is in a substantially closed position, wherein said portion of said inward projection is positioned within said opening and occupies at least a portion of the fluid flow path of the substantially hollow interior of said inner rigid element in said substantially closed position, and wherein said portion of said inward projection is positioned outside of said opening in a substantially opened position, thereby facilitating a change in an inner fluid volume of said connector when said connector is in said substantially closed position relative to the inner fluid volume of said connector when said connector is in said substantially open position.

2. The connector of claim 1, wherein said flexible element further comprises an orifice on a proximal end thereof.

3. The connector of claim 2, wherein said orifice is naturally biased to an open position when said connector is in said substantially open position.

4. The connector of claim 2, wherein said inner rigid element penetrates said orifice when said connector is in said substantially open position.

5. The connector of claim 2, wherein said change in said inner fluid volume of said connector establishes a flow of fluid out of the distal end of said housing upon the removal of a medical implement from said connector.

6. The connector of claim 2, wherein said portion of said inward projection includes a slanted surface on a distal side thereof to facilitate the movement of said portion of said inward projection into and out of said opening in said inner rigid element.

7. The connector of claim 6, wherein a proximal side of said opening in said inner rigid element comprises a slanted portion cooperating with said distal side of said inward projection to further facilitate the movement of said portion of said inward projection into and out of said opening in said inner rigid element.