Septum for a blunt cannula

• US 5,215,537 A
• Filed: 09/13/1990
• Issued: 06/01/1993
• Est. Priority Date: 09/13/1990
• Status: Expired due to Fees

• Current Assignee: James R. Longacre, Lawrence A. Lynn
• Original Assignee: James R. Longacre, Lawrence A. Lynn
• Inventors: Lynn, Lawrence A., Longacre, James R.
• Primary Examiner(s): Yasko, John D.
• Assistant Examiner(s): Gutowski, Anthony
• Application Number:
  US07/581,697
• Time in Patent Office: 992 Days
• Field of Search: 604/86-88, 604/93, 604/99, 604/167, 604/169, 604/175, 604/201, 604/244, 604/256, 604/411, 604/415, 604/905, 128/764, 215/247, 215/249, 215/DIG. 3
• US Class Current: 604/244
• CPC Class Codes: A61M 39/045 pre-slit to be pierced by blunt instrument

Abstract

An elastomeric member for occluding a medical terminal such as a junction terminal to provide a seal and penetratable to establish fluid connection by a blunt needle or cannula in which improved security against passage of contamination is provided. The needle or cannula preferably passes through a perforated passage. The passage can have at least two portions, one having a slit for normally sealing tightly in the absence of a cannula or needle and the other having a bore communicating with the slit and closely conforming to the cannula surface. Other sealing arrangements are detailed.

Claims

1. A homogeneous elastomeric member adapted to occlude and seal a medical terminal, and further adapted to be penetrable by a blunt needle or cannula to establish a fluid communication through said homogeneous elastomeric member, said homogeneous elastomeric member comprising:

a passageway extending only partially through said homogeneous elastomeric member, said passageway including a first portion and a second portion,

said first portion of said passageway is defined by a bore adapted to receive said blunt needle or cannula substantially without clearance, and

said second portion of said passageway is defined by a plurality of confronting surfaces which, in the absence of penetration by said blunt needle or cannula, abut each other to substantially occlude said passageway; and

sealing means for preventing passage of contamination through said homogeneous elastomeric member along said passageway, said sealing means including a portion of said homogeneous elastomeric member adapted to be ruptured by penetration of said blunt needle or cannula.

2. A homogeneous elastomeric member as in claim 1 wherein said sealing means is adjacent an end of said homogeneous elastomeric member.

3. A homogeneous elastomeric member as in claim 1 wherein said first portion of said passageway extends between said second portion of said passageway and said sealing means.