×

Trap in barrel one handed retracted intervenous catheter device

  • US 5,129,884 A
  • Filed: 08/17/1990
  • Issued: 07/14/1992
  • Est. Priority Date: 01/16/1990
  • Status: Expired due to Term
First Claim
Patent Images

1. What is claimed as invention is:

  • an intervenous catheter device held by fingers and thumb for inserting a needle cannula and a catheter into a body and withdrawing said needle cannula from said body comprising;

    an elongated hollow barrel having a first end and a second end and having an inner surface and an outer surface and further having a longitudinal axis in the center of the said elongated hollow barrel, parallel in most part of the said inner surface and said outer surface of the said elongated hollow barrel and further extending from said first end to said second end of said elongated hollow barrel;

    a barrel flange fixed near to said first end of said elongated hollow barrel, said barrel flange further including a needle cannula tunnel formed in said barrel flange to allow said needle cannula to extend past said barrel flange;

    a slidable piston inside of said elongated hollow barrel, said slidable piston having a first end and a second end and said first end of said slidable piston is nearer said first end of said elongated hollow barrel;

    a soft catheter, said soft catheter having a first end and a second end, said second end is fixed to said first end of said elongated hollow barrel, said soft catheter further has a cannula extending from said first end of said soft catheter to said second end of said soft catheter;

    a soft catheter fitting fixing said soft catheter to said elongated hollow barrel;

    a needle cannula having a first end a second end, said first end of said needle cannula extends past said first end of said elongated hollow barrel and said second end of said needle cannula is fixed to said first end of said slidable piston, said needle cannula is disposed within said cannula of said soft catheter and said first end of said needle cannula extends past said first end of said soft catheter;

    a spring means having a first end and a second end, said first end of said spring means is integral with said barrel flange of said elongated hollow barrel and said second end of said spring means is integral with said slidable piston, and spring means is further compressed between said barrel flange of said elongated hollow barrel and said slidable piston;

    at least one piston notch formed into said slidable piston, said piston notch is near perpendicular to said longitudinal axis of said elongated hollow barrel;

    a tunnel, said tunnel is formed inside of the said slidable piston, said tunnel is fixed to the needle cannula to allow fluid or blood to flow through the said needle cannula and into and through said tunnel formed in said slidable piston;

    a needle cannula tunnel in said barrel flange;

    at least one latch means for engaging and locking said slidable piston to said elongated hollow barrel and for disengaging said slidable piston and releasing said slidable piston from said elongated hollow barrel wherein said slidable piston is no longer restrained and said spring pushes said slidable piston and said needle cannula in the direction of the second end of said elongated hollow barrel until the said needle cannula is past the said barrel flange of the elongated hollow barrel, thus enclosing said needle cannula in said elongated hollow barrel and said barrel flange.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×