Catheter insertion device with valve

• US 5,810,835 A
• Filed: 10/18/1996
• Issued: 09/22/1998
• Est. Priority Date: 12/28/1994
• Status: Expired due to Fees

• Current Assignee: Hospira Incorporated (Pfizer Inc.)
• Original Assignee: Abbott Laboratories
• Inventors: Duggan, Brendan J., Ryan, Enda B.
• Primary Examiner(s): Buiz, Michael
• Assistant Examiner(s): RASCHE, PATRICK WILLIAM
• Application Number:
  US08/733,900
• Time in Patent Office: 704 Days
• Field of Search: 606/108, 606/205, 604/159, 604/167, 604/169, 604/237, 604/280
• US Class Current: 606/108
• CPC Class Codes: A61M 2025/0089 Single injection needle protruding axially, i.e. along the longitudinal axis of the catheter, from the distal tip
• CPC Class Codes: A61M 25/0084 being one or more injection needles
• CPC Class Codes: A61M 25/0113 Mechanical advancing means, e.g. catheter dispensers

Abstract

The catheter insertion device of the present invention includes a catheter dispenser having a catheter outlet extending from a base and a drum receptacle engaged to the base in a rotating relationship. An inlet opening in the base is coaxially aligned with the catheter outlet. A passageway extends from the inlet opening tangentially through the catheter drum to the catheter outlet. A rigid needle is disposed through the passageway so that the sharp tip extends beyond the catheter outlet. A flexible introducer catheter generally contiguously and telescopically surrounds the distal portion of the needle. The introducer catheter extends beyond the catheter outlet to a position on the needle that is proximate to the sharp tip and is operatively associated with the needle for insertion into the vein of a patient. A one way flow valve is in fluid-tight connection with the proximal end of the flexible introducer catheter. The valve forms a portion of the passageway so that when the needle is slidably removed from the passageway the valve minimizes the fluid backflow from the vein. When the catheter drum is rotated relative to the base, the drum catheter is threadably inserted into and through the one way valve, through the indwelling flexible introducer catheter and into the vein of the patient.

Claims

1. A catheter insertion device comprising:

a catheter dispenser having a base, a catheter outlet extending from the base, and a rotatable catheter drum rotatably mounted on the base, a catheter mounted on said rotatable catheter drum, said catheter drum constructed so that rotation of said catheter drum relative to said base moves said catheter laterally through said catheter outlet;

an inlet opening in said catheter dispenser in coaxial alignment with said catheter outlet;

said catheter dispenser defining a passageway extending from said inlet opening to said catheter outlet;

a needle having a proximal end portion and a distal end portion, a sharpened tip for insertion into a vein of a patient mounted on said distal end portion, said needle constructed to slide through said passageway so that said sharpened tip extends beyond said catheter outlet;

a flexible introducer catheter member constructed to substantially concentrically surround a portion of said distal end portion of said needle, said flexible introducer catheter member constructed to substantially concentrically surround a portion of said catheter when said drum catheter advances said catheter through said catheter outlet, a portion of said flexible introducer catheter extending beyond said catheter outlet, a one-way flow valve disposed within said flexible introducer catheter, said one-way flow valve constructed to minimize backflow of fluid through said flexible introducer catheter when said needle and said catheter are withdrawn therefrom, said one-way flow valve constructed such that said needle and said catheter are slidable therethrough, said flexible introducer catheter member further including a wiper means for substantially fluidly sealing against said flexible introducer catheter member upon disposition of said catheter through said wiper, without necessitating the imposition of axial compressive forces on said wiper in order to effect the seal, said wiper projecting radially inwardly from an interior wall of said flexible introducer catheter, said wiper means disposed within said catheter member and constructed such that said needle and said catheter are slidable therethrough.