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Needleless adapter

  • US 5,242,432 A
  • Filed: 09/26/1991
  • Issued: 09/07/1993
  • Est. Priority Date: 09/26/1991
  • Status: Expired due to Term
First Claim
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1. A medical valve assembly having a puncturable valve comprising:

  • a valve body having first and second openings and a first internal wall joining said first and second openings, said first internal wall forming a first fluid passage for communicating a first fluid between said first and second opening, said first internal wall including a seating surface; and

    a valve member disposed in and movable within said first fluid passage and adapted to contact said seating surface thereby preventing said first fluid from communicating between said first and second openings through said first fluid passage, wherein said valve member is fabricated from puncturable material;

    whereby, when a force of sufficient urging is exerted against said valve member, said valve member is displaced from said seating surfacing thereby permitting said first fluid to communicate between said first and second openings through said first fluid passage, said communication of said first fluid through said first fluid passage also being accomplished by inserting a hypodermic needle through said puncturable valve member, and into said first fluid passage and dispensing said first fluid from said hypodermic needle into said first fluid passage;

    urging means disposed in said first fluid passage for urging said valve member against said seating surface;

    said valve member and said urging means integrally formed as one piece, said urging means being a membrane concentrically pleated to form an elastic structure which regains its original shape after it has been compressed; and

    said valve body further comprises a third opening and a second internal wall, said second internal wall joining said third opening to said first fluid passage, said second internal wall forming a second fluid passage for communicating a second fluid between said third opening and said first fluid passage.

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