Abstract:
A vacuum blood-collection tube comprises a tube-shaped vessel having an opening through which air can be removed, and a plug that makes the opening air-tightto maintain low-pressure conditions inside the said vessel, the raw materials of the said vessel being polyethyleneterephthalate, a copolymer of polyethylene-terephthalate, or an acrylonitrile resin, and the inner walls of said vessel incorporating a hydrophilic substance that is either difficult or impossible to dissolve in water and that prevents blood clots from adhering to the inner walls of said tube, a water-soluble substance, and an adsorptive inorganic substance.
Abstract:
@ Hand-held shirt-pocket portable medical diagnostic system for checking measurement of blood glucose, urea nitrogen, hemoglobin, blood components or other body qualities. The system includes the engagement of a disposable needle or lance probe package which carries a chemical reagent strip such as blood reacting chemistry. The system includes a pen structure having a visual readout, a microcomputer, and photosensing circuitry which measures the change of color of the blood reacting chemistry of the disposable probe package. The pen also includes a spring arrangement for actuating a needle or lance into the skin for transferring blood from a finger or other area to the chemical reagent strip. A disposable probe structure package includes configurations for transferring of the blood to the reagent strip or the reagent strip to the blood. The pen can also create a vacuum about a time period that the needle is penetrating the skin. The system includes a verification sequence of the electronics, the chemistry of an unused disposable probe package, the presence of blood sample and multiple readings to average results. The system can also be provided with provisions for storing a plurality of readings, communicating with a personal computer, and can act as an alarm and chime to indicate time periods for blood sensing.
Abstract:
An instrument (10) for obtaining a fetal blood sample including an elongated member (12) having an open end portion (14) and a membrane (16) disposed over the open end portion (14) for perfecting a seal about the open end portion (14). A lancet (18) in the form of a blade (64) or a sharp ended capillary tube (48) is disposed in the elongated member (12) for piercing the membrane (16) and making an incision in the skin of a fetus (20). A plunger (26) is supported within the elongated member (12) and is movable to create a suction within the open end portion (14) to draw fetal blood from the incision through the pierced membrane (16) and into the open end portion (14).
Abstract:
A blood lancet assembly includes a handle having a distal end and a proximal end to be held by the user. A lancet extends outwardly from the distal end of the handle and terminates in a forward end adapted to penetrate human flesh. A shield having an open end, a closed end and a receptacle therein is removably engaged to the handle so that the forward end of the lancet is positioned within the receptacle. The receptacle is larger than the forward end of the lancet so that the lancet does not contact the shield.
Abstract:
Système de prélèvement de liquide physiologique, tel que du sang, comportant des moyens d'aspiration et au moins un récipient 1 pourvu d'une cloison transversale 3, disposée au voisinage d'une extrémité ou obturant celle-ci et percée d'un orifice 4, tandis qu'un organe de prélèvement 9 dudit liquide est relié de façon amovible à l'autre extrémité du récipient. Selon l'invention, ce système est caractérisé en ce que la partie 2a dudit récipient comprise entre la cloison 3 et l'extré mité reliée audit organe de prélèvement 9 est conformée en cy lindre pour un piston 5 solidaire d'une tige de piston 6 traver sant ladite closion 3 par ledit orifice 4 et accessible à l'extérieur dudit récipient 1, du côté opposé à l'organe de prélèvement 9.
Abstract:
A single or multiple liquid sample needle assembly is provided which incorporates means for determining whether access to the sample in question has been achieved. The assembly includes a housing (12) with a receiving chamber (50) having translucent or transparent walls (88) for such determination. The invention utilizes a porous plug (27) in the chamber (50) which provides, simultaneously, a liquid barrier for the sample received, and gas displacement venting means for gas displaced by the liquid sample received. The assembly may be modified to receive only a single sample for subsequent discharge to a vacuum collection device, or multiple samples for sequential discharge to a plurality of vacuum collection devices. For multiple collection, the assembly incorporates a flexible sleeve (80) and a separate gas discharge opening (78) in combination with the sample discharge opening of the assembly.
Abstract:
A multiple sample needle assembly 10 useful in collecting fluid samples from a source includes a housing 12 with a chamber 28 therein. A first cannula 14, in fluid communication with the chamber, is provided for insertion into a fluid source. A second cannula 15 is movably positioned in the housing and communicates with the chamber 28. A flow mechanism 26 inside the chamber prevents fluid from flowing from the chamber into the second cannula. This flow mechanism is operatively responsive to inward movement of the second cannula to allow fluid to flow from the chamber into the second cannula for collection therefrom.
Abstract:
Die Erfindung geht von einem Blutentnahmesystem aus, mit dem in einen einseitig offenen auf der anderen Seite mit einer doppelendigen Hohlnadel versehenen zylindrischen Halter ein Blutentnahmeröhrchen eingeschoben wird, das evakuiert und mit einer durchstechbaren Membran ver schlossen ist, so daß beim Einschieben das in das Innere des Halters hineinragende Ende der doppelendigen Hohlnadel die Membran durchsticht und so eine Verbindung des evakuierten Inneren des Blutprobenröhrchens mit dem äußeren Ende der Hohlnadel herstellt. Zur erleichterung des Durchstichs des inneren Endes der Hohlnadel durch die Membran bei exzentrischer Anordnung der Nadel im Halter weist die Membran eine Ringnut (219) auf, die eine Dünnstel le (519′) ergibt, auf die die Nadel beim Einschieben des Blutprobenröhrchens in den Halter trifft. Die Membran weist eine weitere Dünnstelle (520 ) auf, die mit einer Pipette durchstochen werden kann.
Abstract:
A multiple sample needle assembly (10) for determining fluid access when collecting fluid samples from a source of fluid into a vacuum collection devide (16). The assembly (10) includes a housing (12) with a chamber (50) therein having first and second access openings (30, 42) in fluid communication with the chamber (50). The housing (12) is preferably translucent to provide for the viewing of the contents of the chamber (50). A cannula (14) is associated with the first access opening (30), while the second access opening (42) is adapted for fluid communication with the vacuum collection device (10). An operable, resilient valve member (26) is positioned in the chamber (50) and is normally closed against a gas permeable, liquid impermeable plug member (27) mounted in the valve member (26). The valve member (26) is adapted to open away from the plug member (27) when the pressure at the second access opening (42) is less than the pressure at the first access opening (30). When the cannula (14) makes entry into the fluid source, fluid enters the chamber (50) by forcing any gas therein through the porous plug member (22) with the fluid in the chamber (50) being viewable by the user. This fluid remains in the chamber (50) until the valve member (26) opens under the pressure differential.