Abstract: A training device includes a base formed of a thermoplastic elastomeric material that transmits near-infrared radiation and which re-seals after being punctured by a needle of the type used to draw blood from veins. A plurality of simulated veins is formed in the thermoplastic elastomeric material. Each simulated vein is an elongate cylindrical void or lumen formed in the thermoplastic elastomeric material. A blood-simulating and near-infrared absorbing fluid is disposed in each lumen of the plurality of simulated veins. A first simulated vein is formed near a top surface of the thermoplastic elastomeric material, a second simulated vein is positioned further from the top surface, and a third simulated vein is positioned still further from the top surface. A white-in-color cover overlies the base to reflect a computer projected image representing underlying near-infrared absorbing structures that simulate veins that are detectable by near-infrared vein imagers.

Abstract: An adaptor for retrofit attachment to a syringe has a slide slideably mounted on the barrel of the syringe, a housing for releasably engaging a flange formed on the trailing end of the syringe plunger, an elongate connector for interconnecting the slide and the plunger housing, and a guide that releasably engages a flange formed at the trailing end of the barrel. Movement of the slide effects simultaneous and corresponding movement of the plunger. This allows a syringe operator to perform aspiration and injection in sequence with one-handed operation of the syringe. The slide is adjacent the leading end of the plunger so that the operator can see the leading end of the plunger. The user's fingers support the syringe from below. The flange housing permanently engages the flange in a second embodiment. In a third embodiment, the elongate connector and plunger are formed integrally at their respective trailing ends.

Abstract: A syringe has a slide member slideably mounted on the barrel of the syringe, and the slide member is interconnected to a plunger that is slideably mounted in the barrel so that movement of the slide member effects simultaneous and corresponding movement of the plunger. This allows a syringe operator to perform aspiration and injection in sequence with one-handed operation of the syringe. The slide member is mounted near the leading end of the barrel in trailing relation to the leading end of the plunger so that the operator can see the leading end of the plunger and control its instantaneous position by sliding the slide member with a thumb or finger. The hand position of the syringe operator does not change, assuring that precise needle positioning can be made and maintained even during procedures such as sclerotherapy where needle positioning is critical.