IV-catheter insertion device
First Claim
1. An IV-catheter insertion device, comprising:
- a needle holder having a hollow needle with a needle tip attached thereto;
a protective barrel comprising an elongated rigid body having an interior cavity sized and shaped to receive the hollow needle in a protective position;
a pressure spring abutted at a first end by a support surface on the needle holder and at a second end by a support surface on the protective barrel;
a depressible lever or press-button associated with the protective barrel comprising a retainer, which extends radially towards and engages a distal section of the needle holder to compress the pressure spring in a ready position, the depressible lever or press-button being releasable from the distal section of the needle holder when depressed to release the pressure spring to move the hollow needle inside the protective barrel in the protective position;
a catheter hub having a body defining an interior cavity;
a catheter tube attached to the catheter hub and extending distally thereof;
a valve having a slit and positioned in the interior cavity of the catheter hub and against a shoulder for restricting flow through the catheter hub;
a valve opener positioned in the interior cavity of the catheter hub and in sliding communication with the valve;
said valve opener comprising an axially extending stay for pushing by a syringe or an infusion line to slide the valve opener into the valve to open the valve; and
wherein the hollow needle extends through the catheter hub, the valve, the valve opener, and the catheter tube with the needle tip extending out a distal end of the catheter tube in the ready position.
1 Assignment
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Accused Products
Abstract
The present disclosure is directed to a catheter insertion device, which has a catheter hub at the proximal end of a catheter, a tubular needle hub, at which a hollow needle is fixed and extends through the catheter hub and the catheter in a ready position such that the needle tip projects over the distal end of the catheter, a protective barrel which is received in the tubular needle hub in the ready position and is releasably connected to the catheter hub, and a pressure spring arranged between the needle hub and the protective barrel and which displaces the needle hub and the protective barrel apart from each other in an axial direction, wherein a manually operable holding member is provided between the needle hub and the protective barrel, and holds the needle hub in the ready position at the protective barrel against the bias of the pressure spring, so that after the holding member is released, the pressure spring moves the needle hub into a protective position in relation to the protective barrel, in which position the needle is positioned in the protective barrel.
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Citations
23 Claims
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1. An IV-catheter insertion device, comprising:
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a needle holder having a hollow needle with a needle tip attached thereto; a protective barrel comprising an elongated rigid body having an interior cavity sized and shaped to receive the hollow needle in a protective position; a pressure spring abutted at a first end by a support surface on the needle holder and at a second end by a support surface on the protective barrel; a depressible lever or press-button associated with the protective barrel comprising a retainer, which extends radially towards and engages a distal section of the needle holder to compress the pressure spring in a ready position, the depressible lever or press-button being releasable from the distal section of the needle holder when depressed to release the pressure spring to move the hollow needle inside the protective barrel in the protective position; a catheter hub having a body defining an interior cavity; a catheter tube attached to the catheter hub and extending distally thereof; a valve having a slit and positioned in the interior cavity of the catheter hub and against a shoulder for restricting flow through the catheter hub; a valve opener positioned in the interior cavity of the catheter hub and in sliding communication with the valve;
said valve opener comprising an axially extending stay for pushing by a syringe or an infusion line to slide the valve opener into the valve to open the valve; andwherein the hollow needle extends through the catheter hub, the valve, the valve opener, and the catheter tube with the needle tip extending out a distal end of the catheter tube in the ready position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An IV-catheter insertion device, comprising:
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a catheter hub; a catheter tube attached to the catheter hub and extending distally thereof; a needle holder; a hollow needle attached to the needle holder having a needle tip; a protective barrel in telescoping arrangement with the needle holder in the ready position in which the needle tip extends out a distal end of the catheter tube, the protective barrel comprising an elongated rigid body having an interior cavity sized and shaped to receive the hollow needle when the hollow needle retracts in a protective position; a single depressible lever or press-button at a distal end of the protective barrel engaging a distal section of the needle holder to compress a pressure spring abutted at a first end by a support surface on the needle holder and at a second end by a support surface on the protective barrel;
the pressure spring being held compressed in the ready position until the single depressible lever or press-button is depressed;
the pressure spring being expanded when the single depressible lever or press-button is activated and the needle holder and the hollow needle move in a proximal direction relative to the protective barrel to move the hollow needle inside the protective barrel in the protective position; andwherein a valve having a slit is positioned in an interior cavity of the catheter hub for restricting flow through the catheter hub, and the hollow needle extends through the catheter hub, the valve, and the catheter tube in the ready position. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An IV-catheter insertion device, comprising:
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a needle holder; a hollow needle attached to the needle holder and having a needle tip; a protective barrel comprising a depressible lever or press-button at a distal end of the protective barrel, the depressible lever or press-button engaging a section of the needle holder to retain a pressure spring in a compressed state in a ready position between support surfaces on the protective barrel and the needle holder, the depressible lever or press-button being releasable from the section of the needle holder when depressed to release the pressure spring to move the hollow needle inside the protective barrel in a protective position; a catheter hub having a body defining an interior cavity; a catheter tube attached to the catheter hub and extending distally thereof; a valve positioned in the interior cavity of the catheter hub for restricting flow through the catheter hub, said valve comprising at least one slit; a valve opener with a distal end for pushing the valve and a proximal end for pushing by a syringe or an infusion line slidably positioned in the interior cavity of the catheter hub for opening the at least one slit to permit fluid flow across the valve; and wherein the hollow needle extends through the catheter hub, the valve, and the catheter tube, including a distal end opening of the catheter tube, in the ready position. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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Specification