Medical connector

• US 10,398,887 B2
• Filed: 08/04/2017
• Issued: 09/03/2019
• Est. Priority Date: 05/16/2007
• Status: Active Grant

• Current Assignee: ICU Medical Incorporated
• Original Assignee: ICU Medical Incorporated
• Inventors: Fangrow, Jr., Thomas F., Lopez, George A.
• Primary Examiner(s): Lee, Brandy S
• Application Number:
  US15/669,786
• Publication Number:
  US 20180015275A1
• Time in Patent Office: 760 Days
• 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 2039/1044 Verifying the connection, e.g. audible feedback, tactile feedback, visual feedback, using external light sources
• CPC Class Codes: A61M 2039/1061 Break-apart tubing connectors or couplings
• CPC Class Codes: A61M 2039/261 where the fluid space within the valve is increasing upon disconnection
• CPC Class Codes: A61M 2039/268 wherein the stem portion is moved for opening and closing the valve, e.g. by translation, rotation
• 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 39/1011 Locking means for securing connection; Additional tamper safeties A61M39/16 takes precedence
• CPC Class Codes: A61M 39/14 for connecting tubes having sealed ends needle sets A61M5/162; having valves closing automatically on disconnection of line A61M39/26
• CPC Class Codes: A61M 39/143 both tube ends being sealed by meltable membranes pierced after connection by use of heat, e.g. using radiant energy
• 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 luer connector including a rigid housing having a first end and a second end. The housing further including a rigid tubular male portion at the first end, a rigid tubular female portion at the second end, and a longitudinal opening therethrough. The male portion is configured to be engageable with a female connector. The female portion is configured to be engageable with a male connector and to prevent the disengagement of the male connector from the female portion. In some embodiments, the female portion is configured to maintain a fixed rotational position when the male connector is being threaded therewith, but to rotate with the male connector once the male connector has become fully engaged with the female portion so as to prevent the male connector from becoming unthreaded from the female portion.

Claims

1. A luer connector comprising:

a first housing member comprising a first end, a second end, and a first connector engagement portion configured to engage a first connector and positioned at the first end; and

a second housing member comprising;

a first component defining a first cylindrical surface including at least one engaging surface, the first component being coupled to the first housing member so as to be inhibited from rotating relative to the first housing member,

a second component defining a second cylindrical surface including at least one engaging surface, the second cylindrical surface being generally co-axially aligned with and adjacent to the first cylindrical surface, the second component being supported by the first component and comprising a second connector engagement portion configured to engage a second connector,

a first arrangement in which the at least one engaging surface of the second component is configured to interact with the at least one engaging surface of the first component to inhibit the second component from rotating in either a first direction or a second direction relative to the first housing member, and

a second arrangement in which either the at least one engaging surface of the second component or the at least one engaging surface of the first component is configured to permit the second component to substantially freely rotate in either the first direction or the second direction relative to the first housing member after a predetermined amount of manual torque is applied to the second component relative to the first housing member,

wherein the first direction is defined as a direction that permits the second connector to threadably engage the second component and the second direction is defined as a direction that permits the second connector to threadably disengage the second component, and

wherein the second housing member is configured to change from the first arrangement to the second arrangement when the second connector is further rotated in the first direction beyond a point at which the second connector is substantially fully engaged with the second housing member.

2. The luer connector of claim 1, wherein at least one of the first component or the second component further comprises at least one protrusion configured to inhibit the second component from rotating relative to the first housing member when the second housing member is in the first arrangement, the at least one protrusion further configured to permit the second component from rotating relative to the first housing member when the second housing member is in the second arrangement.

3. The luer connector of claim 1, wherein one of the first component and the second component comprises at least one protrusion, each protrusion being configured to break off when approximately 0.45 Nm or more of torque is applied to the second component relative to the first housing member, and

wherein the other of the first component and second component comprises at least one channel configured to receive the at least one protrusion.

4. The luer connector of claim 1, wherein the second housing member is further configured to change from the first arrangement to the second arrangement when one of approximately 0.34 Nm or more of torque is applied to the second component relative to the first housing member.

5. The luer connector of claim 1, wherein the luer connector comprises at least one of rigid plastic, polycarbonate, glass-filled plastic, metal, and metal alloy.

6. The luer connector of claim 1, further comprising a valve member configured to alter flow of a fluid through the luer connector.

7. The luer connector of claim 6, wherein the valve member at least partially extends through the first housing member, the valve member comprises:

an opened end and a closed end;

a passageway within the valve member;

an outwardly extending flange near the second end of the first housing member, the outwardly extending flange adapted to seal a hollow bore at the second end of the first housing member when placed in contact with an interior surface of the first housing member;

at least one opening near the closed end of the valve member extending from the passageway through the valve member;

at least one strut connected to the valve member and extending towards the closed end of the valve member, the at least one strut extending substantially parallel to a central axis of the valve member and at least partially surrounding a narrow section of the valve member ending in the closed end;

a retaining member configured to couple the valve member and the first housing member; and

a sealing element disposed within the first housing member and configured to inhibit fluid communication through the hollow bore of the housing between an interior of the first connector engagement portion of the first housing member and the first end of the first housing member.

8. The luer connector of claim 1, wherein the at least one engaging surface of the second component is configured to project outward from at least one of the first cylindrical surface and the second cylindrical surface.

9. The luer connector of claim 8, wherein the at least one engaging surface of the second component further includes a tapered forward edge.

10. The luer connector of claim 1, wherein either the at least one engaging surface of the first component or the at least one engaging surface of the second component is configured to substantially break away when the predetermined amount of manual torque is applied to the second component relative to the first component.

11. The luer connector of claim 1, wherein the first connector engagement portion comprises a male member, and wherein the first connector comprises a female connector.

12. The luer connector of claim 11, wherein the first connector engagement portion comprises a male luer tip with a tapering interior surface.

13. The luer connector of claim 1, wherein the second connector engagement portion comprises a female member, and wherein the second connector comprises a male connector.

14. The luer connector of claim 1, wherein the first component comprises an outer member, and wherein the second component comprises an inner member.

15. A method of engaging a first medical implement having a luer connector comprising:

providing a luer connector, the luer connector comprising;

a first housing member having a first end, a second end, and a first connector engagement portion configured to engage a first connector,

a second housing member comprising a second connector engagement portion configured to engage a second connector, and

a locking element configured to engage the second connector engagement portion to inhibit the second connector engagement portion from rotating relative to the first housing member,

wherein the locking element is configured to disengage the second connector engagement portion so that the second connector engagement portion is substantially free to rotate relative to the first housing member when a threshold torque is applied to the second connector engagement portion in a first direction relative to the first housing member, and

wherein the first direction is defined as a direction that causes the second connector to substantially engage the second connector engagement portion;

axially aligning the second connector against the second connector engagement portion; and

twisting the second connector relative to the second connector engagement portion in the first direction to apply a torque to the second connector engagement portion relative to the first housing member to cause the second connector to fully engage with the second connector engagement portion and cause the locking element to disengage the second connector engagement portion, wherein the torque is at least equal to the threshold torque.

16. The method of claim 15, wherein the second housing member comprises:

a first component comprising at least one engaging surface; and

a second component co-axially aligned with the first component, the second component comprising at least one engaging surface,

wherein the second housing member comprises a first configuration in which the at least one engaging surface of the first component and the at least one engaging surface of the second component interact to inhibit the second component from rotating relative to the first housing member, and

wherein the second housing member comprises a second configuration wherein the second component and the first housing member are able to rotate relative to each other.

17. The method of claim 16, wherein the step of twisting the male connector relative to the female member further comprises:

twisting the second connector relative to the second connector engagement portion until a substantially fully threadably engaged point is reached; and

further twisting the second connector relative to the second connector engagement portion in the first direction beyond the substantially fully threadably engaged point to disengage the at least one engaging surface of the first component and the at least one engaging surface of the second component to cause the second housing portion to change from the first configuration to the second configuration, wherein the second configuration permits the second component to rotate relative to the first housing member without disengaging the second connector from the luer connector.

18. The method of claim 16, wherein at least one of the first component or the second component further comprises at least one protrusion configured to inhibit the second component from rotating relative to the first housing member when the second housing member is in the first arrangement, the at least one protrusion further configured to permit the second component from rotating relative to the first housing member when the second housing member is in the second arrangement.

19. The method of claim 15, wherein the first connector engagement portion comprises a male member, and wherein the first connector comprises a female connector.

20. The luer connector of claim 15, wherein the second connector engagement portion comprises a female member, and wherein the second connector comprises a male connector.