Abstract: This invention is shown with two modes of construction and use. In the first arrangement, there is provided a dual tubular fluid conductor in which the blocking filter is positioned at the entering end of a second fluid conduit leading from a catheter to a transducer. In the second arrangement, the blocking filter is disposed at the fast-flush device and insures an absence of bubbles in a fluid conductor from the device to a transducer. The blocking filter is positioned so as to be in the fluid-conducting path from the patient to a transducer, with this blocking filter of hydrophilic material so that pulse signals sent to and through the fluid conductor connected to the transducer ar not distorted by the presence of air bubbles.

Abstract: This invention pertains to a medicator securing device for use in an I.V. administration in which a needle is inserted into a resilient cap member to add drugs and the like to an infusion procedure. This inserted needle is retained in inserted condition and position in this cap by this securing device. A flexible, substantially transparent plastic film having one surface coated with a self-stick adhesive is applied tightly to a frame of semi-rigid material. This frame provides at least one window-like opening which is covered by the adhesively-coated film. A release sheet member is applied to the window-like area until a time of use and application of the securing device, at which time the release sheet is removed and the adhesive surface of the film within said window is brought to and around the connection, with a fold made of the device so that the film is engaged tightly around the connection.

Abstract: This suction needle device is used to transfer liquids such as cytotoxic drugs from a stoppered container to a syringe. This device has a sharpened needle which is conventionally attached to a hub. A thin-walled tubular sleeve is mounted on the shank of this needle and is disposed in a telescope fashion around this shank. One end of the sleeve is disposed a short distance from the sharpened end of the needle so that the stopper may be entered by the sharpened needle and sleeve and provides a seal when so penetrated. A crimping tool provides opposed and longitudinally displaced localized crimps to deform the sleeve to the extent that a positive engagement with the shank of the needle is made. The crimps are limited enough to provide positive securing of the sleeve without bending or distorting the interior capacity of the needle to draw fluids into the syringe. The thin-walled sleeve may have an aperture in the side and in flow communication with the air passage between the needle shank and sleeve.

Abstract: This invention pertains to a medicator securing device for use in an I.V. administration in which a needle is inserted into a resilient cap member to add drugs and the like to an infusion procedure. This inserted needle is retained in inserted condition and position in this cap by this securing device. A flexible, substantially transparent plastic film having one surface coated with a self-stick adhesive is applied tightly to a frame of semi-rigid material. This frame provides at least one window-like opening which is covered by the adhesively-coated film. A release sheet member is applied to the window-like area until a time of use and application of the securing device, at which time the release sheet is removed and the adhesive surface of the film within said window is brought to and around the connection, with a fold made of the device so that the film is engaged tightly around the connection.

Abstract: A catheter system is provided for the introduction and placement of a flexible catheter into the lumen of an artery or vein. A guide wire is provided and is kept in a sterile condition within a flexible bag-like enclosure attached to the hub of a needle. The needle is hollow and is sharpened in the usual manner and is secured in a hub to provide a needle assembly. This hub is provided with a skirt and extends through this hub and into flow communication with a "flashback" chamber. In one embodiment, the needle is connected to a tubular member having a transverse hole near its interior end, and in another embodiment the needle's inner end is in flow communication with a channel or annular groove in a centering plug. In every embodiment, there is a centering plug which provides a guideway for the guide wire which is positioned in this guideway to prevent fluid flow.

Abstract: A catheter system is provided for the introduction and placement of a flexible catheter into the lumen of an artery or vein. A guide wire is provided and is kept in a sterile condition within a flexible bag-like enclosure attached to the hub of a needle. The needle is hollow and is sharpened in the usual manner and is secured in a hub to provide a needle assembly. This hub is provided with a skirt and extends through this hub and into flow communication with a "flashback" chamber. In one embodiment, the needle has a side transverse hole in its interior end, and in another embodiment the needle's inner end is in flow communication with a tapered recess in the needle hub which provides a guideway for the guide wire which, when it enters the needle, prevents blood flow. The guide wire is manipulated forwardly by grasping the wire through the bag-like enclosure and advanced forwardly by "feel" and into the lumen after penetration has been made as indicated by the "flashback.

Abstract: This connection apparatus shows two arrangements for receiving a connector assembly of effluent and influent halves, with this apparatus providing for the transfer and alignment of the connected halves. These assembled halves are brought to the apparatus and the halves are manipulated to effect separation, after which the effluent connector half is moved to bring the effluent connector half into alignment and axial coincidence with a new and sterile influent connector half. By and through manipulation, the halves are secured into a fluid-tight condition whereat the fluid may be caused to flow through the connected halves. In a first arrangement, the apparatus includes a sliding action, with the apparatus having a tongue-and-groove construction. The other arrangement utilizes a rotary action, with a disc-like member associated with a cup-like member. Relative movement of the two members is made to effect the transfer and alignment of the effluent and influent halves.

Abstract: This suction needle device is used to transfer liquids such as cytotoxic drugs from a stoppered container to a syringe. This device has a sharpened needle which is conventionally attached to a hub. A housing is adapted and is mounted on the shank of this needle and a tubular sleeve is disposed in a telescope fashion around this shank and one end of the sleeve is secured in this housing. The stopper is disposed to be entered by the sharpened needle and sleeve and provides a seal when so penetrated. A crimping tool provides opposed and longitudinally displaced localized crimps to deform the sleeve to the extent that a positive engagement with the shank of the needle is made. The crimps are limited enough to provide positive securing of the sleeve without bending or otherwise affecting the interior capacity of the needle. The shank of the needle is sealed against exterior air reaching the conduit between the outer diameter of the needle and inner diameter of the sleeve.

Abstract: A method is described for coating a hydrophobic filter membrane so as to render said membrane hydrophilic. This method is particularly for treating polypropylene or polytetrafluoroethylene in which the filter membrane is contemplated to have a pore size not larger than two (2) microns. The treating solution has Triethanolamine Dodecylbenzene Sulfonate (LAS) as the active ingredient. This treatment may use heated air (125.degree. to 200.degree. F.) as a drying assist which renders the membrane to have a substantially instantaneous "wet-out".

Abstract: A catheter system is provided for the introduction and placement of a flexible catheter into the lumen of an artery or vein. A guide wire is provided and is kept in a sterile condition within a flexible bag-like enclosure attached to the hub of a needle. The needle cannula is hollow and is sharpened in the usual manner and is secured in a hub to provide a needle assembly. This hub is provided with a skirt and the cannula extends through this hub and into flow communication with a "flashback" indicator. In one embodiment the cannula is formed with a transverse hole near its interior end and in the other embodiment the cannula's inner end is in flow communication with a channel and then to a longitudinal or annular groove in a centering plug. In every embodiment there is a centering plug which provides a guideway for the guide wire which is positioned in this guideway to prevent fluid flow. The guidewire is manipulated forwardly into the lumen after penetration has been made as indicated by the "flashback".

Abstract: This invention shows a sterile connection device as made in several embodiments but with a common purpose in which a protector may be pierced, penetrated or opened by pressurized fluid flow by means carried on a influent connector member but with the withdrawal of this means the protector is closed to the passage of unwanted contaminents. The influent connector may be conduit, a syringe or a like member with or without a needle, or a influent connector made as a molding and with or without a needle. The protector, if resilient, may be a secured diaphragm; a duckbill valve, or a slit in a resilient wall of a tubular member removably mountable on an extending tubular end of a effluent connector. The influent connector and the effluent connector are formed of plastic with molding processes providing the desired tolerances.