Female connector

• US 7,128,348 B2
• Filed: 01/06/2005
• Issued: 10/31/2006
• Est. Priority Date: 01/07/2004
• Status: Active Grant

• Current Assignee: Nipro Corporation
• Original Assignee: Nipro Corporation
• Inventors: Kawamura, Shin-ichi, Wakabayashi, Takahito, Deguchi, Takayuki, Hidaka, Masato
• Primary Examiner(s): Hewitt, James M.
• Application Number:
  US11/029,537
• Publication Number:
  US 20050146136A1
• Time in Patent Office: 663 Days
• Field of Search: 285/332, 285/332.1, 604/533, 604/534, 604/535, 604/905
• US Class Current: 285/332
• 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 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 39/12 for joining a flexible tube to a rigid attachment

Abstract

A female connector including: a cylindrical core member having a luer taper on a distal inner surface thereof and a tube bonding portion formed on a proximal end inner surface and being formed with a flange at a distal extremity thereof; a cylindrical housing having a male screw formed on an outer surface thereof and mounted to an outer periphery of the core member without being fixed, and a stopper fixed at a position apart from the flange of the core member, wherein the distance (L1) between the flange and the stopper is larger than the length (L2) of the housing in the axial direction when a male connector is connected to the female connector.

Claims

1. A female connector to be connected to a fluid delivery tube comprising:

a cylindrical core member including a luer taper on an inner surface of a distal end portion of the core member, a tube bonding portion on an inner surface of a proximal end portion of the core member, and a flange at a distal end of the core member;

a cylindrical housing mounted to an outer periphery of the core member without being fixed and having a male screw formed on an outer surface of the housing; and

a stopper fixed at a predetermined position apart from the flange of the core member,

wherein a distance (L1) between the flange and the stopper is equal to or larger than a length (L2) of the housing in an axial direction and a length (L3) between a proximal end of the housing and a distal end of the stopper when the female connector is connected to a male connector is smaller than a screwing distance of the male screw of the female connector into a female screw of the male connector.

2. A female connector according to claim 1, wherein the distance (L1) between the flange and the stopper is larger than the length (L2) of the housing in the axial direction when the female connector is connected to a male connector.

3. A female connector according to claim 1, wherein a projection is formed at an end of the housing facing the stopper and an engagement portion which can engage with the projection is formed at an end of the stopper facing the housing.

4. A female connector according to claim 1, wherein the housing includes wings on an outer surface of the housing.

5. A female connector according to claim 1, wherein the core member is formed of one material selected from the group consisting of vinyl chloride, polyurethane and polybutadiene and the housing is formed of one material selected from the group consisting of polypropylene and polycarbonate.