Safety syringe with I.V. port access

• US 5,735,823 A
• Filed: 11/07/1994
• Issued: 04/07/1998
• Est. Priority Date: 07/08/1992
• Status: Expired due to Term

• Current Assignee: Becton, Dickinson & Co
• Original Assignee: Becton, Dickinson & Co
• Inventors: Berger, Howard S.
• Primary Examiner(s): YASKO JR, JOHN D
• Application Number:
  US08/335,214
• Time in Patent Office: 1,247 Days
• Field of Search: 604/192, 604/187, 604/198, 604/263, 604/83-87, 604/283, 604/284, 604/905
• US Class Current: 604/192
• CPC Class Codes: A61M 2039/042 Shrouds encircling the access needle preventing accidental needle-stick
• CPC Class Codes: A61M 39/04 having pierceable self-sealing members
• CPC Class Codes: A61M 5/3243 being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel devices for protecting guide needles in combination with catheters A61M25/0612
• CPC Class Codes: Y10S 604/905 Aseptic connectors or couplings, e.g. frangible, piercable

Abstract

A safety needle device which can be used substantially as a regular syringe or with a "y" connector. The device includes an elongate barrel with a longitudinal axis and an inside surface defining a chamber which has an open proximal end and a distal end with a needle cannula. The needle cannula projects distally outwardly, and has a distal tip and a lumen in fluid communication with the barrel chamber. The device has a needle guard with a proximal first end and a distal second end. The guard is mounted for movement relative to the barrel from a retracted position in which the guard does not materially obstruct access to the distal tip of the needle cannula and an extended position where the guard substantially prevents inadvertent access to the distal tip of the needle cannula.

The needle guard is releasably retained in the retracted position and locks in the extended position. The guard has at least one open slot which extends proximally from the second end. The slot is sized to accept the sidearm of a "y" connector when the needle penetrates the septum of the "y" connector and the bore of the connector is in fluid communication with the chamber of the barrel.

Claims

1. A safety needle device for use with a "y" type connector, the connector having a hollow bore within, a sidearm and an injection port having a pierceable septum to provide access to the bore, comprising:

an elongate barrel having a longitudinal axis and an inside surface defining a chamber, an open proximal end, a distal end having a needle cannula attached thereto, said needle cannula having a lumen therethrough in fluid communication with said chamber, said needle cannula projected distally outwardly from said distal end of said barrel and terminating in a distal tip;

a needle guard having a proximally located first end and a distally located second end, said needle guard being mounted for movement relative to said barrel from a retracted position in which said guard does not materially obstruct access to said distal tip of said needle cannula and an extended position in which said guard substantially prevents inadvertent access to said distal tip of said needle cannula;

means for releasably retaining said guard in said retracted position;

means for locking said guard in said extended position; and

said guard including an open slot extending proximally from said second end, said slot sized to accept the sidearm when said guard is in said extended position, said slot further including a dogleg portion sized to releasably engage the sidearm of the "y" connector with a rotational movement of said guard relative to said axis of said barrel when said needle cannula is penetrating the septum and the bore of the connector is in fluid communication with said chamber of said barrel.

2. The safety needle device of claim 1 wherein said guard has a plurality of slots.

3. The safety needle device of claim 2 wherein at least one of said slots of said guard has a dogleg portion, said dogleg portion sized to releasably engage the sidearm of the "y" connector with a rotational movement of said guard relative to said axis of said barrel when said needle cannula is penetrating the septum and the bore of the connector is in fluid communication with said chamber of said barrel.

4. A safety needle device for use with a "y" type connector, the connector having a hollow bore within, a sidearm and an injection port having a pierceable septum to provide access to the bore, comprising:

an elongate barrel having a longitudinal axis and an inside surface defining a chamber, an open proximal end, a distal end having a needle cannula attached thereto, said needle cannula having a lumen therethrough in fluid communication with said chamber, said needle cannula projecting distally outwardly from said distal end of said barrel and terminating in a distal tip;

a plunger assembly having a stopper slidably positioned in fluid-tight engagement inside said barrel, said plunger capable of moving fluid from said chamber through said lumen upon movement of said plunger toward said distal end, said plunger capable of facilitating the drawing of fluid into said chamber through said lumen upon movement of said plunger away from said distal end;

a needle guard having a proximally located first end and a distally located second end, said needle guard being mounted on said barrel for movement relative to said barrel from a retracted position in which said needle guard does not materially obstruct access to said distal tip of said needle cannula and an extended position in which said guard substantially prevents inadvertent access to said distal tip of said needle cannula;

means for releasably retaining said guard in said retracted position, said means including a collar mounted on said distal end of said barrel and first and second frictionally engaging members located on said collar and said guard respectively, said first member being a flange-like protrusion extending radially outwardly from said collar and said second member including a plurality of inwardly projecting axial ribs on said guard;

means for locking said guard in said extended position, said means for locking including said collar mounted on said distal end of said barrel and interlocking first and second members are located on said collar and said guard respectively, said first member being said flange-like protrusion extending radially outwardly from said collar and said second member including a recess in said guard for receiving said protrusion; and

said guard having an open slot extending proximally from said second end, said slot sized to accept the sidearm of the "y" connector when said guard is in said extended position, said slot further including a dogleg portion sized to releasably engage the sidearm of the "y" connector with a rotational movement of the guard relative to said axis of said barrel when said guard is in said extended position and said needle cannula is penetrating the septum of the "y" connector and said chamber of said barrel is in fluid communication with the bore of the connector.

5. A safety needle device for use with a "y" type connector, the connector having a hollow bore within, a sidearm and an injection port having a pierceable septum to provide access to the bore, comprising:

an elongate barrel having a longitudinal axis and an inside surface defining a chamber, an open proximal end, a distal end having a needle cannula attached thereto, said needle cannula having a lumen therethrough in fluid communication with said chamber, said needle cannula projecting distally outwardly from said distal end of said barrel and terminating in a distal tip;

a plunger assembly having a stopper slidably positioned in fluid-tight engagement inside said barrel, said plunger capable of moving fluid from said chamber through said lumen upon movement of said plunger toward said distal end, said plunger capable of facilitating the drawing of fluid into said chamber through said lumen upon movement of said plunger away from said distal end;

a needle guard having a proximally located first end and a distally located second end, said needle guard being mounted on said barrel for movement relative to said barrel from a retracted position in which said needle guard does not materially obstruct access to said distal tip of said needle cannula and an extended position in which said guard substantially prevents inadvertent access to said distal tip of said needle cannula;

means for releasably retaining said guard in said retracted position, said means including a collar mounted on said distal end of said barrel and first and second frictionally engaging members located on said collar and said guard respectively, said first member being a flange-like protrusion extending radially outwardly from said collar and said second member including a plurality of inwardly projecting axial ribs on said guard;

means for locking said guard in said extended position, said means for locking including said collar mounted on said distal end of said barrel and interlocking first and second members are located on said collar and said guard respectively, said first member being said flange-like protrusion extending radially outwardly from said collar and said second member including a recess in said guard for receiving said protrusion; and

said guard having a plurality of open slots, said slots extending proximally from said second end of said guard, and sized to accept the sidearm of the "y" connector when said guard is in said extended position and said needle cannula penetrates the septum of the "y" connector and said chamber of said barrel is in fluid communication with the bore of the connector, and at least one of said slots includes a dogleg portion sized to releasably engage the sidearm of the "y" connector with a rotational movement of said guard relative to said axis of said barrel when said guard is in said extended position and said needle cannula is penetrating the septum and the bore of the connector is in fluid communication with said chamber of said barrel.