Stopper-shield assembly

  • US 6,602,206 B1
  • Filed: 08/16/2000
  • Issued: 08/05/2003
  • Est. Priority Date: 08/18/1999
  • Status: Expired due to Term
First Claim
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1. A closure assembly for sealing an open end of a body fluid collection tube comprising:

  • a stopper comprising an annular stopper body with an integral upper flange portion;

    a lower integral annular sealing portion on said body;

    an annular notch in said body at the interface of said upper flange portion and said lower sealing portion;

    wherein the outer annular surface of said lower portion being the sealing surface with a container and tapered inwardly continuously toward the axis of said body, said taper being from said annular notch to the bottom surface of said lower annular sealing portion;

    said bottom surface of said annular sealing portion being convex; and

    a flexible cap body for mounting on said stopper comprising a top surface, a bottom stop ledge, an annular skirt extending from said top surface to said bottom stop ledge;

    said annular skirt comprising an outer wall surface and an inner wall surface;

    a central opening in said top surface;

    an integral annular abutment on said inner wall surface with a tapered surface;

    wherein said integral annular abutment having a width of 0.011 to 0.021 inches and said annular skirt having a width of 0.008 to 0.018 inches with respect to said center-line axis.

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