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1. WO2014072994 - FOLDED PLUNGER AUTO RETRACTABLE SYRINGE FOR SINGLE USE

Publication Number WO/2014/072994
Publication Date 15.05.2014
International Application No. PCT/IN2013/000656
International Filing Date 29.10.2013
IPC
A61M 5/00 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm rests
CPC
A61M 2005/323
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
178Syringes
31Details
32Needles; Details of needles pertaining to their connection with syringe or hub
3205Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
321Means for protection against accidental injuries by used needles
322Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
3221Constructional features thereof, e.g. to improve manipulation or functioning
323Connection between plunger distal end and needle hub proximal end, e.g. stud protruding from the plunger
A61M 2005/3231
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
178Syringes
31Details
32Needles; Details of needles pertaining to their connection with syringe or hub
3205Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
321Means for protection against accidental injuries by used needles
322Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
3221Constructional features thereof, e.g. to improve manipulation or functioning
3231Proximal end of needle captured or embedded inside piston head, e.g. by friction or hooks
A61M 2005/3242
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
178Syringes
31Details
32Needles; Details of needles pertaining to their connection with syringe or hub
3205Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
321Means for protection against accidental injuries by used needles
322Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
3234Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
3241Needle retraction energy is accumulated inside of a hollow plunger rod
3242Needle retraction by vacuum
A61M 5/31505
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
178Syringes
31Details
315Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod ; or piston; Appliances on the rod for facilitating dosing ; ; Dosing mechanisms
31501Means for blocking or restricting the movement of the rod or piston
31505Integral with the syringe barrel, i.e. connected to the barrel so as to make up a single complete piece or unit
A61M 5/322
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
178Syringes
31Details
32Needles; Details of needles pertaining to their connection with syringe or hub
3205Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
321Means for protection against accidental injuries by used needles
322Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
A61M 5/3234
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
178Syringes
31Details
32Needles; Details of needles pertaining to their connection with syringe or hub
3205Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
321Means for protection against accidental injuries by used needles
322Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
3234Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
Applicants
  • RATHORE, Jai Hind [IN]/[IN]
  • RATHORE, Bharati [IN]/[IN]
  • RATHORE, Pratibha [IN]/[IN]
  • RATHORE, Neelam [IN]/[IN]
  • RATHORE, Bhuvan Chandra [IN]/[IN]
Inventors
  • RATHORE, Jai Hind
  • RATHORE, Bharati
  • RATHORE, Pratibha
  • RATHORE, Neelam
  • RATHORE, Bhuvan Chandra
Common Representative
  • RATHORE, Jai Hind [IN]/[IN]
Priority Data
3476/DEL/201208.11.2012IN
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) FOLDED PLUNGER AUTO RETRACTABLE SYRINGE FOR SINGLE USE
(FR) SERINGUE AUTO-RÉTRACTABLE À PISTON PLIÉ À USAGE UNIQUE
Abstract
(EN)
The present subject matter relates to an auto retractable safety syringe (100) for single use which includes a needle carrier assembly (108) and a folded plunger assembly (200) respectively for inserting in an outermost barrel (110). The folded plunger assembly (200) is provided with an inner plunger barrel (102), an outer plunger barrel (104) and a plunger plug (106). The inner plunger barrel (102) is provided with at least one oppositely positioned circumferential C-groove (122) on outer surface at its proximal end P, a pair of oppositely positioned finger locks (118 and 120) on either end to get engaged with an outer plunger barrel (104), and a piston seal holder (114) structured at the proximal end P for holding a piston seal (116). The outer plunger barrel (104) includes at least one pair of oppositely positioned finger locks (156 and 158) on both ends and a second piston seal holder (124) at proximal end P for holding another piston seal (126). The folded plunger assembly is also provided with the plunger plug (106) which is designed with at least one uniform circumferential groove (136) wherein the plunger plug (106) is centrally designed with a longitudinally furrowed knob (140) at its proximal end P. The present subject matter also discusses about the needle carrier assembly (108) for housing in the outermost barrel (110) in which the needle carrier assembly (108) includes a seat and internal locking arrangement (148) provided in a central axial passage opening designed in a cavity (146) at the distal end D to snap lock the furrowed knob (140) present in the plunger plug (106), a needle (152) provided with a needle cover (154) at the proximal end P of the needle carrier assembly (108), and the elastic O-rings (132) to support and hold the needle carrier assembly 108 inside the outermost barrel (110), and to dislodge the assembly on completion of injection. The present invention further explains that the outermost barrel (110) designed to receive the folded plunger assembly (200) alter getting in the needle 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 jacket opening (134) at the proximal end of the outermost barrel (110).
(FR)
La présente invention concerne une seringue de sécurité auto-rétractable (100) à usage unique, qui comprend un ensemble support d'aiguille (108) et un ensemble piston plié (200) à introduire respectivement dans un tube le plus à l'extérieur (110). L'ensemble piston plié (200) comprend un tube de piston interne (102), un tube de piston externe (104) et un bouchon de piston (106). Le tube de piston interne (102) comprend au moins une rainure en C circonférentielle positionnée de façon opposée (122) sur une surface externe à son extrémité proximale P, une paire de verrous de doigt positionnés de façon opposée (118 et 120) sur chaque extrémité pour venir en prise avec un tube de piston externe (104), et un support de joint d'étanchéité de piston (114) structuré à l'extrémité proximale P pour maintenir un joint d'étanchéité de piston (116). Le tube de piston externe (104) comprend au moins une paire de verrous de doigt positionnés de façon opposée (156 et 158) sur les deux extrémités et un second support de joint d'étanchéité de piston (124) à l'extrémité proximale P pour maintenir un autre joint d'étanchéité de piston (126). L'ensemble piston plié comprend également le bouchon de piston (106) qui est conçu avec au moins une rainure circonférentielle uniforme (136), le bouchon de piston (106) étant conçu au centre avec un bouton sillonné de façon longitudinale (140) à son extrémité proximale P. La présente invention concerne également l'ensemble support d'aiguille (108) à recevoir dans le tube le plus à l'extérieur (110), l'ensemble support d'aiguille (108) comprenant un agencement de siège et de verrouillage interne (148) disposé dans une ouverture de passage axial centrale conçue dans une cavité (146) à l'extrémité distale D pour verrouiller par encliquetage le bouton sillonné (140) présent dans le bouchon de piston (106), une aiguille (152) comprenant un couvercle d'aiguille (154) à l'extrémité proximale P de l'ensemble support d'aiguille (108), et les joints toriques élastiques (132) pour supporter et maintenir l'ensemble support d'aiguille (108) à l'intérieur du tube le plus à l'extérieur (110), et pour déloger l'ensemble lors de l'achèvement de l'injection. La présente invention explique en outre que le tube le plus à l'extérieur (110) conçu pour recevoir l'ensemble piston plié (200) altère l'introduction dans l'ensemble support d'aiguille (108), le tube le plus à l'extérieur (110) comprenant un repose-doigt (128), une rainure conique circonférentielle interne en forme de L à angle obtus uniforme (130) et une ouverture d'enveloppe conique (134) à l'extrémité proximale du tube le plus à l'extérieur (110).
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