Coupling for tubular elements

• US 20070249197A1
• Filed: 04/03/2007
• Published: 10/25/2007
• Est. Priority Date: 04/03/2006
• Status: Abandoned Application

• Current Assignee: Novalung GmbH (Fresenius SE & Co. KGaA)
• Original Assignee: Novalung GmbH (Fresenius SE & Co. KGaA)
• Inventors: Spranger, Martin, Joost, Thilo
• Application Number:
  US11/732,615
• Publication Number:
  US 20070249197A1
• Time in Patent Office: Days
• US Class Current: 439/152
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61M 2039/1027 Quick-acting type connectors
• CPC Class Codes: A61M 39/1011 Locking means for securing connection; Additional tamper safeties A61M39/16 takes precedence
• CPC Class Codes: A61M 39/225 Flush valves, i.e. bypass valves for flushing line
• CPC Class Codes: F16L 37/00 Couplings of the quick-acting type radially binding sleeves F16L17/04, F16L21/06; connecting hoses to rigid members F16L33/00; connections made automatically when vehicles are brought together B60D, B61G; specially adapted for lubricating devices F16N21/00
• CPC Class Codes: F16L 41/02 Branch units, e.g. made in one piece, welded, riveted
• CPC Class Codes: F16L 47/32 Branch units, e.g. made in one piece, welded, riveted

Abstract

The invention relates to a coupling for tubular elements, with at least one plug and one socket, which plug can be inserted into the socket and can be locked therein, and both the plug and the socket have, extending approximately along their longitudinal axis, a channel for a fluid, said channel being arranged in such a way that the fluid can flow through the coupling in a locked state thereof. The plug can be locked in the socket in at least two locking positions, and the socket and/or the plug has at least one opening such that, in a first locking position, the opening connects the channel for a fluid to the environment, and, in a second locking position, the channel for a fluid is isolated from the environment. The invention relates further to a cannula that comprises such a coupling.

Claims

1. Coupling for tubular elements, with at least one plug and one socket, which plug can be inserted into the socket and can be locked therein, and both the plug and the socket have, extending approximately along their longitudinal axis, a channel for a fluid, said channel being arranged in such a way that the fluid can flow through the coupling in a locked state thereof, wherein the plug can be locked in the socket in at least two locking positions, and in that the socket and/or the plug has at least one opening such that, in a first locking position, the opening connects the channel for a fluid to the environment, and, in a second locking position, the channel for a fluid is isolated from the environment.

2. Coupling according to claim 1, wherein an actuating element is present with which the locked engagement of the plug to the socket can be cancelled.

3. Coupling according to claim 1, wherein the plug has at least two annular grooves on an outer circumferential surface, and wherein the socket has at least one locking lug that engages in one of the annular grooves in the locking positions.

4. Coupling according to claim 3, wherein the locking lug is formed by a slotted ring which is arranged in an annular groove in an inner circumferential surface of the socket and protrudes above the inner circumferential surface at least at one location.

5. Coupling according to claim 4, wherein the actuating element has a wedge with which the slotted ring can be spread open in such a way that an engagement of the ring in one of the annular grooves of the plug can be cancelled.

6. Coupling according to claim 1, wherein the opening on the outer face has a connector piece.

7. Coupling according to claim 6, wherein the connector piece is a socket for a syringe.

8. Coupling according to claim 1, wherein the plug and the socket are made of plastic.

9. Coupling according to claim 1, wherein the plug has a seal in the front area.

10. Coupling according to claim 1, wherein the opening is arranged in the socket.

11. Cannula, comprising a coupling according to claim 1.