Luer Receiver and Method for Fluid Transfer

• US 20080051733A1
• Filed: 10/30/2007
• Published: 02/28/2008
• Est. Priority Date: 05/29/1998
• Status: Active Grant

• Current Assignee: Becton, Dickinson & Co
• Original Assignee: Becton, Dickinson & Co
• Inventors: Lynn, Lawrence
• Granted Patent: US 8,475,416 B2
• Time in Patent Office: Days
• US Class Current: 604/256
• CPC Class Codes: A61B 10/0045 Devices for taking samples of body liquids devices for taking blood samples A61B5/15
• CPC Class Codes: A61B 5/153 Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
• CPC Class Codes: A61J 1/2044 having slits
• CPC Class Codes: A61J 1/2058 having multiple connecting ports
• CPC Class Codes: A61J 1/2062 with directional valves
• CPC Class Codes: A61J 1/2096 Combination of a vial and a syringe for transferring or mixing their contents
• CPC Class Codes: A61M 2039/0054 Multiple layers
• CPC Class Codes: A61M 2039/263 where the fluid space within the valve is decreasing upon disconnection
• CPC Class Codes: A61M 39/02 Access sites
• CPC Class Codes: A61M 39/045 pre-slit to be pierced by blunt instrument
• CPC Class Codes: A61M 39/26 Valves closing automatically on disconnecting the line and opening on reconnection thereof check valves A61M39/24
• CPC Class Codes: Y10S 604/905 Aseptic connectors or couplings, e.g. frangible, piercable

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.

Claims

1. A luer receiving valve for receiving a male luer mounted within a threadable luer lock connector shroud into fluid communication with a flow channel, the valve comprising:

a luer valve housing having an inlet and a proximal portion sized to be received into the luer lock connector adjacent the inlet, the housing having a channel for fluid passage and a septum positioned within the channel, the septum defining a proximal portion, a distal portion, and a resealable slit configured to allow insertion and penetration of the male luer into the slit; and

a floor adjacent the septum, the floor being configured to prevent deflection of the septum into the flow channel when the male luer is inserted into the slit and into fluid communication with the flow channel.

2. The luer receiver of claim 1, wherein the floor includes a flow path extending through the floor, the slit being positioned proximal of the flow path so that when the slit opens, fluid from the slit can flow into the flow path.

3. The luer receiver of claim 1, wherein the floor extends laterally, proximal the flow channel to deflect the septum away from the flow channel.

4. The luer receiver of claim 1, wherein the floor slopes distally to deflect the septum away from the flow channel.

5. The luer receiver of claim 1, wherein the septum is displaced laterally along the floor when the male luer is inserted into the slit.

6. The luer receiver of claim 1, wherein the septum is displaced laterally and downwardly along the floor when the male luer is inserted into the slit.

7. 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, 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 housing, along with the septum proximal portion; and

restraining the septum against deflection 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 flow channel.

8. A luer receiving valve for receiving a male luer mounted within of a threadable luer lock connector shroud defining a distal end, the valve comprising:

a luer valve housing having an inlet and a proximal portion sized to be received into the luer lock connector adjacent the inlet, the housing having a channel for fluid passage; and

a septum positioned within the channel, the septum defining a proximal portion, a distal portion, and a resealable slit configured to allow insertion and penetration of the male luer into the slit;

wherein, the septum comprises a distally projecting extension extending distally from the proximal portion to the distal portion, the extension defining opposing walls on opposing sides of the slit, the opposing walls being of lesser transverse dimension perpendicular to the slit than the transverse dimension of the proximal portion perpendicular to the slit; and

wherein the housing defines opposing internal walls lateral to the opposing walls of the extension, the septum being displaced laterally toward the opposing internal walls of the housing by the penetrating insertion of the male luer into the slit;

said valve further comprising;

a flow channel distal of at least a portion of the septum for receiving flowing liquid from the male luer when the luer has been inserted into the septum; and

a floor adjacent the septum, the floor being configured to prevent deflection of the septum into the flow channel when the luer is inserted into the slit into fluid communication with the flow channel.