Single-use syringe with non-retractable piston

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

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

604228, A61M 500

Patent

active

052268829

ABSTRACT:
A single-use syringe has a piston assembly sealingly slidable within a bal. The piston assembly has a plunger (1) with a divergently tapered portion (4) and a resiliently deformable piston (2) with a through aperture (7), correspondingly tapered so that part of the tapered portion (4) may fit within the aperture, and a tapered skirt portion (6) adapted to surround a further part of the tapered portion (4). The through aperture is adapted to be plugged by the plunger. A locking ring (3) having a tapered aperture to surround said skirt portion is provided to hold the skirt (6) against the plunger end portion (4). When the plunger (1) is depressed within the barrel, the locking ring (3) is delayed by the wall of the barrel while the skirt (6) is pushed inwardly. Once the skirt (6) is unrestrained by the locking ring (3), outward movement of the plunger (1) will cause its end portion (4) to be pulled free from the piston (2 ). The piston (2) is thus non-retractable to prevent a second drawing-in of liquid.

REFERENCES:
patent: 4973309 (1990-11-01), Sultan
patent: 5078686 (1992-01-01), Bates
patent: 5085638 (1992-02-01), Farbstein et al.
patent: 5135495 (1992-08-01), Arcusin

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Single-use syringe with non-retractable piston does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Single-use syringe with non-retractable piston, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single-use syringe with non-retractable piston will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2308255

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.