Elastomeric syringe actuation device

Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...

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Details

604131, 604207, 433 89, A61M 5315

Patent

active

055586503

ABSTRACT:
A syringe actuation device comprises an elastomeric element that is removably attachable to the outlet tip of a syringe, and to a grip member that allows the elastomeric element to be pulled along the syringe barrel, so as to seat against the distal end of the syringe plunger. In first and second embodiments, the elastomeric element is attached between a grommet, that fits around the outlet tip, and an end cap, having a finger grip, that engages the distal end of the plunger. When the grommet is seated around the outlet tip, and the end cap is engaged against the distal end of the plunger with the plunger in its withdrawn position, the elastomeric element is stretched along the syringe, thereby biasing the plunger toward its inserted position. As the elastomeric element restores itself to its unstretched configuration, it pushes the plunger into the syringe barrel. In the first embodiment, the elastomeric element is an elastic strap having first and second ends removably secured to the grommet so as to be length-adjustable, and an intermediate portion secured to the end cap. In the second embodiment, the elastomeric element is a continuous elastic band removably secured to both the grommet and the end cap. In a third embodiment, the elastomeric element has a hole that receives the outlet tip, and the grip member is removably engageable with the elastomeric element for pulling the elastomeric element so as to seat against the distal end of the plunger.

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patent: 5041094 (1991-08-01), Perego et al.
patent: 5078679 (1992-01-01), Reese
patent: 5100389 (1992-03-01), Vaillancourt

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