WO2014072993A3 - Folded- plunger auto-retractable disposable syringe - Google Patents

Folded- plunger auto-retractable disposable syringe Download PDF

Info

Publication number
WO2014072993A3
WO2014072993A3 PCT/IN2013/000655 IN2013000655W WO2014072993A3 WO 2014072993 A3 WO2014072993 A3 WO 2014072993A3 IN 2013000655 W IN2013000655 W IN 2013000655W WO 2014072993 A3 WO2014072993 A3 WO 2014072993A3
Authority
WO
WIPO (PCT)
Prior art keywords
needle
barrel
folded
plunger
assembly
Prior art date
Application number
PCT/IN2013/000655
Other languages
French (fr)
Other versions
WO2014072993A2 (en
Inventor
Jai Hind RATHORE
Bharati RATHORE
Pratibha RATHORE
Neelam RATHORE
Bhuvan Chandra RATHORE
Original Assignee
Rathore Jai Hind
Rathore Bharati
Rathore Pratibha
Rathore Neelam
Rathore Bhuvan Chandra
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rathore Jai Hind, Rathore Bharati, Rathore Pratibha, Rathore Neelam, Rathore Bhuvan Chandra filed Critical Rathore Jai Hind
Publication of WO2014072993A2 publication Critical patent/WO2014072993A2/en
Publication of WO2014072993A3 publication Critical patent/WO2014072993A3/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
    • A61M5/31513—Piston constructions to improve sealing or sliding
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3234—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
    • A61M2005/31518—Piston or piston-rod constructions, e.g. connection of piston with piston-rod designed to reduce the overall size of an injection device, e.g. using flexible or pivotally connected chain-like rod members
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/323—Connection between plunger distal end and needle hub proximal end, e.g. stud protruding from the plunger
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3234—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
    • A61M2005/3235—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user triggered by radial deflection of the anchoring parts between needle mount and syringe barrel or needle housing, e.g. spreading of needle mount retaining hooks having slanted surfaces by engagement with correspondingly shaped surfaces on the piston at the end of an injection stroke

Abstract

The present subject matter relates to a folded- plunger auto- retractable disposable syringe (100) which includes a needle carrier assembly (109) and a folded plunger assembly (111) for respectively inserting in an outermost barrel (106). The folded plunger assembly (111) is provided with at least one oppositely positioned circumferential C-groove (118) on the outer surface at its proximal end P constituting a ridge (130). The folded plunger assembly also includes at least one outwardly protruded finger lock (116) to get engaged with an outer plunger barrel (104), and a piston seal holder (112) structured at the proximal end P for holding a piston seal (114). The outer plunger barrel (104) includes at least two pair of oppositely positioned finger locks (128, 130 & 132, 134) wherein each pair of lock is diametrically aligned opposite to each other and positioned at the distal end of the barrel where two diameters of barrel bisect each other perpendicularly. The outer plunger barrel (104) is also provided with a second piston seal holder (120) at proximal end P for holdings second piston seal (122). The present subject matter also discusses about the needle carrier assembly (109) for housing in the outermost barrel 106 before inserting the folded plunger assembly (111). The needle carrier assembly (109) includes a hypodermic needle (107) provided with a needle seat (156) at its distal end to hold a needle (146) at the proximal end of the hypodermic needle (107). The needle carrier assembly (109) is further provided with a spring (148) surrounding the needle to (146) push the hypodermic needle (107) through the spring (148) and an axial (passage 164) present in a needle carrier hub (108). The needle carrier hub (108) is advantageously provided with three different diameters to firmly hold the needle seat (156). The present invention further explains that the outermost barrel (106) is designed to receive the folded plunger assembly (111) after getting in the needle carrier assembly (109), wherein the outermost barrel (106) is provided with a finger rest (136), two uniform obtuse-angled L-shaped inner circumferential conical groove (138 and 140) and a conical jacket opening (144) at the proximal end of the outermost barrel (106).
PCT/IN2013/000655 2012-11-08 2013-10-29 Folded- plunger auto-retractable disposable syringe WO2014072993A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN3475DE2012 2012-11-08
IN3475/DEL/2012 2012-11-08

Publications (2)

Publication Number Publication Date
WO2014072993A2 WO2014072993A2 (en) 2014-05-15
WO2014072993A3 true WO2014072993A3 (en) 2014-07-03

Family

ID=50685275

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2013/000655 WO2014072993A2 (en) 2012-11-08 2013-10-29 Folded- plunger auto-retractable disposable syringe

Country Status (1)

Country Link
WO (1) WO2014072993A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK3675935T3 (en) 2017-08-30 2021-11-08 Pirouette Medical Inc COMPACT AUTO INJECTOR
WO2019071129A1 (en) 2017-10-05 2019-04-11 Pirouette Medical LLC Protective case for an auto-injector
WO2021059084A1 (en) * 2019-09-23 2021-04-01 Rathore Pratibha Fluid injecting & collecting system with retractable needle operable by vacuum

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2045394A1 (en) * 1989-09-18 1991-03-19 Robb Pascal Patent Pty. Ltd. Syringe
US20040087907A1 (en) * 2002-11-01 2004-05-06 Smith Martin E. Disposable safety syringe
WO2004039441A2 (en) * 2002-10-30 2004-05-13 Jun Piao Teng Vacuum auto-retractable safety syringe
US8088104B2 (en) * 2006-05-24 2012-01-03 Safeshot Technologies, Llc Syringe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2045394A1 (en) * 1989-09-18 1991-03-19 Robb Pascal Patent Pty. Ltd. Syringe
WO2004039441A2 (en) * 2002-10-30 2004-05-13 Jun Piao Teng Vacuum auto-retractable safety syringe
US20040087907A1 (en) * 2002-11-01 2004-05-06 Smith Martin E. Disposable safety syringe
US8088104B2 (en) * 2006-05-24 2012-01-03 Safeshot Technologies, Llc Syringe

Also Published As

Publication number Publication date
WO2014072993A2 (en) 2014-05-15

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DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
122 Ep: pct application non-entry in european phase

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