Abstract:
Gravitational flow systems and equipment sets for the sequential administration of medical liquids wherein a primary source (11) can be administered at a flow rate independent of the flow rate of a secondary source (13) and including a barrier (47) substantially impervious to air to prevent the inadvertent administration of air when the secondary source (13) is depleted. The air barrier may consist of either a hydrophilic membrane (45) or mechanical float valve (65) or a diaphragm operated barrier member (241).
Abstract:
An improved venipuncture device comprises a catheter having a catheter hub at one end, with a needle having a needle hub at one end and a sharpened tip at the second end extending through the catheter and catheter hub. A resilient reseal is mounted in the catheter hub for sealing the catheter upon removal of the needle. The improvement comprises a wing hub having an axial bore adapted for telescopic reception and attachment to the catheter portion. A pair of oppositely extending flexible wings are integrally formed and extend from the wing hub. An area of reduced thickness on each of the flexible wings along a portion of the width of the wings adjacent to the wing hub allows the wings to be easily folded upward. As a result, the wings may be pinched together between the thumb and index finger, thus, making it easier to insert the needle into the vein of the patient.
Abstract:
An improved venipuncture device comprises a catheter having a catheter hub at one end, with a needle having a needle hub at one end and a sharpened tip at the second end extending through the catheter and catheter hub. A resilient reseal is mounted in the catheter hub for sealing the catheter upon removal of the needle. The improvement comprises a wing hub having an axial bore adapted for telescopic reception and attachment to the catheter portion. A pair of oppositely extending flexible wings are integrally formed and extend from the wing hub. An area of reduced thickness on each of the flexible wings along a portion of the width of the wings adjacent to the wing hub allows the wings to be easily folded upward. As a result, the wings may be pinched together between the thumb and index finger, thus, making it easier to insert the needle into the vein of the patient.
Abstract:
A needle-inside, catheter placement assembly including a spliced, two-part needle and a catheter unit comprising a catheter, winged catheter insertion means, flexible tubing and tube hub, wherein axial and rotational alignment of the needle and catheter unit are maintained by mechanically interlocked complementary portions of the needle and lumen of the winged catheter insertion means.
Abstract:
A needle-inside, catheter placement assembly including a spliced, two-part needle and a catheter unit comprising a catheter, winged catheter insertion means, flexible tubing and tube hub, wherein axial and rotational alignment of the needle and catheter unit are maintained by mechanically interlocked complementary portions of the needle and lumen of the winged catheter insertion means.
Abstract:
A prefilled, readily activated syringe of the disposable type which can be activated in a fast and efficient manner. A vial containing the medicament to be administered is positioned in a syringe barrel and spaced from one point of a double piercing cannula member which is slidably received in the opposing end of the syringe barrel. Resilient finger gripping members engage a groove in the hub of the piercing cannula in one position with the piercing point spaced from the vial stopper. To activate the syringe one merely moves the slidable cannula member in a direction toward the vial wherein the finger gripping members are released from the first annular groove and engage a second annular groove spaced from the first. To provide needle point alignment and to prevent rotation during movement of the piercing cannula one of the finger gripping members rides in a groove which intersects the two annular grooves and also engages an open portion in a stop member which is positioned adjacent the end of the second groove.