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1. IN3476/DEL/2012 - FOLDED PLUNGER AUTO RETRACTABLE SYRINGE FOR SINGLE USE

Office
India
Application Number 3476/DEL/2012
Application Date 08.11.2012
Publication Number 3476/DEL/2012
Publication Date 15.08.2014
Publication Kind A
IPC
A61B
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
Applicants PRATIBHA
BHARATI
JAI HIND
NEELAM RATHORE
Inventors PRATIBHA
BHARATI
JAI HIND
NEELAM RATHORE
Title
(EN) FOLDED PLUNGER AUTO RETRACTABLE SYRINGE FOR SINGLE USE
Abstract
(EN)
The present subject matter relates to an auto retractable safety syringe 100 for single use whichincludes a needle carrier assembly 108 and a folded plunger assembly 200 respectively forinserting in an outermost barrel 110. The folded plunger assembly 200 is provided with an innerplunger barrel 102, an outer plunger barrel 104 and a plunger plug 106. The inner plunger barrel102 is provided with at least one oppositely positioned circumferential C-groove 122 on outersurface at its proximal end P, a pair of oppositely positioned finger locks (118 and 120) on eitherend to get engaged with an outer plunger barrel 104, and a piston seal holder 114 structured atthe proximal end P for holding a piston seal 116. The outer plunger barrel 104 includes at leastone pair of oppositely positioned finger locks (156 and 158) on both ends and a second pistonseal holder 124 at proximal end P for holding another piston seal 126. The folded plungerassembly is also provided with the plunger plug 106 which is designed with atleast one uniformcircumferential groove 136 wherein the plunger plug 106 is centrally designed with alongitudinally furrowed knob 140 at its proximal end P. The present subject matter alsodiscusses about the needle carrier assembly 108 for housing in the outermost barrel 110 in whichthe needle carrier assembly 108 includes a seat and internal locking arrangement 148 provided ina central axial passage opening designed in a cavity 146 at the distal end D to snap lock thefurrowed knob 140 present in the plunger plug 106, a needle 152 provided with a needle cover154 at the proximal end P of the needle carrier assembly 108, and the elastic O-rings 132 tosupport and hold the needle carrier assembly 108 inside the outermost barrel 110, and to dislodgethe assembly on completion of injection. The present invention further explains that theoutermost barrel 110 designed to receive the folded plunger assembly 200 after getting in theneedle carrier assembly 108, wherein the outermost barrel 110 is provided with a finger rest 128,a uniform obtuse-angled L-shaped inner circumferential conical groove 130 and a conical jacketopening 134 at the proximal end of the outermost barrel 110.

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