US 8,475,416 B2Granted

Luer receiver and method for fluid transfer

OwnerLawrence A. Lynninventor

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Abstract

An improved luer lock receiving septum having a configuration which provides rapid and tight resealing and yet allows penetration of the septum by the luer tip with a low penetration force. The elongated septum includes an upper portion of enlarged diameter having a target surface, a central slit, and a central, lower septum extension projecting about the slit below the upper portion and into a housing so that following luer insertion there is provided sufficient room for both the laterally displaced extension of the septum, the luer taper, and the housing to be received into a conventional luer lock connector. The septum is further preferably configured to minimize or eliminate the negative pressure deflection normally associated with the withdrawal of the large diameter luer cannula from an enclosed fluid filled lumen or chamber, by substantially isolating the lumen or chamber from the septum material displacement resultant from luer insertion. In an exemplary embodiment, the luer receiving septum is provided at a port of a stop cock.

Claims7

Dependent claims

A method for mitigating negative pressure within a flow channel of a luer receiving valve during the withdrawal of a male luer from the valve, the valve comprising a luer valve housing having an inlet and a housing proximal portion adjacent the inlet, a septum having a septum proximal portion within the housing proximal portion and a resealable slit formed in the septum proximal portion, said resealable slit extending within a housing central portion, and a flow channel distal of said resealable slit, the method comprising:

inserting a male luer mounted within a threadable luer lock connector shroud into the septum through at least a portion of the resealable slit;
receiving the housing proximal portion into said threadable luer lock connector shroud, along with the septum proximal portion;
and
restraining the septum against deflection induced by the male luer into the distal flow channel when the male luer has been inserted into the septum through said at least a portion of the slit and placed in fluid communication with the distal flow channel wherein the septum has a central portion having a distal end and the slit has a closed distal portion extending to the distal end of the central portion, and said step of inserting a male luer causes a portion of the slit that extends through the distal end of the central portion of the septum to open from a closed sealing position, said restraining being accomplished at least in part by a distal support portion of said housing provided adjacent the distal end of the central portion of the septum through which said resealable slit extends;
wherein the septum further comprises a distal portion having a lateral portion, the restraining step comprising restraining said lateral portion of the septum against said deflection.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/928,861Filed 30 Oct 2007 · continuation
Priority: 29 May 1998
Published: US 2008/0051733 A128 Feb 2008
Granted: 2 Jul 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

A61B 10/0045
Instruments for taking body samples for diagnostic purposes ; Other methods or instruments for diagnosis, e.g. for vaccination diagnosis, sex…:…
A61B 5/153
Devices for taking samples of blood: devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
A61M 39/02
Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use: access sites
A61M 39/045
Having pierceable self-sealing members: pre-slit to be pierced by blunt instrument

Family

Application60/087,162Us provisional application · filed 29 May 1998
Application60/101,998Us provisional application · filed 28 Sep 1998
Application09/322,037Parent of this continuation-in-part · filed 28 May 1999
Application09/635,153Parent of this continuation · filed 8 Aug 2000
US 6,171,287 B2Parent of this continuation-in-part · filed 9 Jan 2001
Application11/350,059Parent of this continuation · filed 9 Feb 2006
US 7,033,339 B1Parent of this continuation · filed 25 Apr 2006
US 2008/0051733 A1Pre-grant publication · published 28 Feb 2008
US 7,998,122 B2Parent of this continuation
Application09/635,153Parent of this continuation-in-part
US 2006/0129112 A1Published application
US 8,475,416 B2This patent

From the US filing history. Foreign family members aren’t listed.