×

Catheter assembly having a fenestrated dilator

  • US 6,726,659 B1
  • Filed: 12/09/1999
  • Issued: 04/27/2004
  • Est. Priority Date: 12/09/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A catheter assembly comprising:

  • an elongated hollow introducer needle adapted for insertion into a biological liquid containing region of a patient;

    a flexible, hollow tubular dilator for forming a first stage dilation of an access opening in a patient, said dilator having a main lumen in which said needle is removably and operatively slidably disposed, said dilator defining a first dilator fenestration through a side wall thereof;

    a flexible, hollow tubular sheath having a main lumen in which said dilator is removably and operatively, slidably disposed for forming a second stage dilation of the access opening in the patient which is larger than said first stage dilation, said sheath including at least one sideport which communicates with the main lumen of said sheath, and means for conducting a biological liquid from said patient, as a result of insertion of said needle into said region, into said sideport through said first dilator fenestration said sideport communicating with the main lumen of said dilator at least under circumstances wherein said needle is retracted proximally beyond said first dilator fenestration.

View all claims
  • 11 Assignments
Timeline View
Assignment View
    ×
    ×