Fluid connector latches with profile lead-ins

• US 9,046,205 B2
• Filed: 12/22/2010
• Issued: 06/02/2015
• Est. Priority Date: 12/09/2009
• Status: Active Grant

• Current Assignee: Nordson Corporation
• Original Assignee: Nordson Corporation
• Inventors: Whitaker, Carl T., Lewis, Peter D.
• Primary Examiner(s): Bochna, David E
• Assistant Examiner(s): LINFORD, JAMES ALBERT
• Application Number:
  US12/976,894
• Publication Number:
  US 20110204621A1
• Time in Patent Office: 1,623 Days
• Field of Search: 285/124.1, 285/124.4, 285/314, 285/316, 285/317, 285/308, 904/905, 904/206, 904/326, 904/533, 604/905, 604/206, 604/326, 604/533
• US Class Current: 1/1
• CPC Class Codes: A61M 2039/1088 having a plurality of male connectors, e.g. Luer connectors
• 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 39/105 Multi-channel connectors or couplings, e.g. for connecting multi-lumen tubes multi-channel connectors in general F16L37/56
• CPC Class Codes: F16L 37/0841 by means of a transversally slidable locking member surrounding the tube
• CPC Class Codes: F16L 37/56 for double-walled or multi-channel pipes or pipe assemblies

Abstract

A female receiving connector for connecting sections of tubing is provided. The female receiving connector includes a housing having a top housing portion and a bottom housing portion coupled to the top housing portion. The female receiving connector also includes a button moveably coupled within the housing. A locking plate is coupled to the button and configured to move with the button. The locking plate has a profile lead-in having an interfacing surface located at a proximal side of the profile lead-in for interfacing a male connector. The interfacing surface extends along at least a portion of at least three sides of an aperture of the locking plate and is tapered along one or more of the at least three sides. Additionally, the profile lead-in includes a locking surface located at a distal side of the profile lead-in for securing the male connector within the housing of the female receiving connector. A substantially flat surface is located between the interfacing surface and the locking surface.

Claims

1. A female receiving connector for connecting sections of tubing comprising

a housing further comprising

a top housing portion;

a bottom housing portion coupled to the top housing portion; and

a button moveably coupled within the housing; and

a locking plate coupled to the button and configured to move with the button, the locking plate including at least a first surface profile and a second surface profile together defining an enclosed aperture, with the first surface profile having a profile lead-in further comprising

an interfacing surface formed on a proximal side of the profile lead-in for interfacing with a male connector, wherein the interfacing surface extends along a bottom portion of the enclosed aperture of the locking plate;

a locking surface located on a distal side of the bottom portion of the aperture for securing the male connector within the housing of the female receiving connector; and

a parabolic cylinder surface located between the interfacing surface and the locking surface, wherein

the parabolic cylinder surface extends to lateral edges of the aperture,

a proximal edge of the parabolic cylinder surface tapers distally towards a distal edge of the parabolic cylinder surface as the parabolic cylinder surface approaches the lateral edges of the aperture such that a distance between the proximal edge and distal edge narrows, the interfacing surface has a length from a proximal edge of the interfacing surface to the proximal edge of the parabolic cylinder surface that varies from a center toward lateral edges of the aperture, a middle length at a center of the interfacing surface is shorter than an outer length of the interfacing surface at the lateral edges such that the interfacing surface becomes longer distally at the at the lateral edges while the parabolic cylinder surface becomes shorter proximally at the lateral edges, the distal edge of the parabolic cylinder surface abuts with the locking surface and the parabolic cylinder surface is perpendicular to the locking surface; and

wherein

the second surface profile defines a convex curved surface extending from a proximal side of the locking plate to a distal side of the locking plate.

2. The female receiving connector of claim 1, wherein

the aperture of the locking plate comprises two overlapping areas;

and

a first area is defined by a circumference of a first circle that is smaller than a circumference of a second circle that defines a second area;

whereby

the female receiving connector is configured to allow the male connector to pass through the second area and secure the male connector within the first area.

3. The female receiving connector of claim 1, wherein the button and the locking plate are integrally formed.

4. The female receiving connector of claim 1, wherein the interfacing surface expands distally as the proximal edge of the parabolic cylinder surface extends distally.

5. The female receiving connector of claim 1, wherein the parabolic cylinder surface has a substantially constant profile from the proximal edge to the distal edge and a middle portion is defined by a radius of a circle that corresponds to a radius of an outer surface of the male connector.

6. A female receiving connector for transporting fluids comprising

a housing defining at least one lumen for fluid flow, the housing further comprising

a top housing portion;

and

a bottom housing portion coupled to the top housing portion; and

a button moveably coupled within the housing and retained by the top housing portion, the button further comprising

a locking member coupled to the button and configured to displace in conjunction with the button when force is applied to the button or to a surface of the locking member, the locking member including at least a first surface profile and a second surface profile together defining an aperture, wherein the first surface profile includes a profile lead-in defining an edge of the aperture, wherein the profile lead-in further comprises

a curved surface formed on a proximal side of a bottom surface of the profile lead-in for interfacing with a male connector;

a locking surface located at a distal side of the locking member adjacent the profile lead-in for securing the male connector within the housing of the female receiving connector; and

a parabolic cylinder surface located between the curved surface and the locking surface, wherein

a distal edge of the parabolic cylinder surface abuts with the locking surface and the parabolic cylinder surface is perpendicular to the locking surface;

the curved surface extends from a proximal face of the locking member to the parabolic cylinder surface,

the curved surface has a convex contour extending from the proximal face of the locking member to the parabolic cylinder surface,

the curved surface extends below the aperture to lateral edges of the aperture, and the curved surface has a length from a proximal edge of the curved surface to the proximal edge of the parabolic cylinder surface that varies from a center toward the lateral edges of the aperture, a middle length at a center of the curved surface is shorter than an outer length of the curbed surface at the lateral edges such that the curved surface becomes longer distally at the at the lateral edges while the parabolic cylinder surface becomes shorter proximally at the lateral edges such that a distal edge of the curved surface diverges away from a proximal edge of the curved surface as the curved surface approaches the lateral edges of the aperture, and wherein

the second surface profile includes a curved surface extending from the proximal side to the distal side.

7. The female receiving connector of claim 6, wherein

the parabolic cylinder surface extends to lateral edges of the aperture;

and

a proximal edge of the parabolic cylinder surface tapers distally at the lateral edges such that a distance between the proximal edge and distal edge narrows.

8. The female receiving connector of claim 6, wherein an apex of the curved surface extends into the lateral edges of the aperture forming a curved ledge.

9. The female receiving connector of claim 6, wherein the curved surface terminates at the lateral edges of the aperture.

10. The female receiving connector of claim 6, wherein the parabolic cylinder surface has a substantially constant profile from a proximal edge to a distal edge thereof and a middle portion is defined by a radius of a circle that corresponds to a radius of an outer surface of the male connector.

11. The female receiving connector of claim 6, wherein the locking surface of the profile lead-in is the same as a distal surface of the locking member.