CA2437415A1 - Retractable syringe with reduced retraction force - Google Patents

Retractable syringe with reduced retraction force Download PDF

Info

Publication number
CA2437415A1
CA2437415A1 CA002437415A CA2437415A CA2437415A1 CA 2437415 A1 CA2437415 A1 CA 2437415A1 CA 002437415 A CA002437415 A CA 002437415A CA 2437415 A CA2437415 A CA 2437415A CA 2437415 A1 CA2437415 A1 CA 2437415A1
Authority
CA
Canada
Prior art keywords
retraction force
retractable syringe
outer body
transition zone
nose portion
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002437415A
Other languages
French (fr)
Other versions
CA2437415C (en
Inventor
Thomas J. Shaw
Judy Zhu
Diane Rutherford
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Retractable Technologies Inc
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24540571&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2437415(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of CA2437415A1 publication Critical patent/CA2437415A1/en
Application granted granted Critical
Publication of CA2437415C publication Critical patent/CA2437415C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • A61M5/32—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
    • A61M5/50—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 having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • A61M5/5013—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
    • A61M5/502—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking 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
    • A61M5/50—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 having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • A61M5/508—Means for preventing re-use by disrupting the piston seal, e.g. by puncturing

Abstract

A tamperproof retractable non-reusable syringe has a one piece hollow outer body (12) with a barrel (14) for a slidable plunger, a transition zone and a smaller diameter nose portion (16). An elongated needle holder (22) and spring (24) combination is installable from the rear of the outer body, guided into the nose portion and held by cooperating inwardly and outwardly facing surfaces oriented in the direction of retraction at the most constricted part of the transition zone where the nose begins.
CA002437415A 2000-08-07 2001-08-01 Retractable syringe with reduced retraction force Expired - Lifetime CA2437415C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/633,657 2000-08-07
US09/633,657 US6572584B1 (en) 2000-08-07 2000-08-07 Retractable syringe with reduced retraction force
PCT/US2001/024129 WO2002011796A1 (en) 2000-08-07 2001-08-01 Retractable syringe with reduced retraction force

Publications (2)

Publication Number Publication Date
CA2437415A1 true CA2437415A1 (en) 2002-02-14
CA2437415C CA2437415C (en) 2007-06-26

Family

ID=24540571

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002437415A Expired - Lifetime CA2437415C (en) 2000-08-07 2001-08-01 Retractable syringe with reduced retraction force

Country Status (4)

Country Link
US (1) US6572584B1 (en)
AU (1) AU2001292549A1 (en)
CA (1) CA2437415C (en)
WO (1) WO2002011796A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9408983B2 (en) 2004-09-03 2016-08-09 L.O.M. Laboratories Inc. Single-use pneumatic safety syringe providing gas-driven needle retraction
US10709847B2 (en) 2015-01-20 2020-07-14 L.O.M. Laboratories Inc. Retractable needle syringe with unitary propellant release module
US10765815B2 (en) 2014-10-31 2020-09-08 L.O.M. Laboratories Inc. Retractable needle syringe

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US7544188B2 (en) * 2001-07-19 2009-06-09 Intelliject, Inc. Medical injector
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9408983B2 (en) 2004-09-03 2016-08-09 L.O.M. Laboratories Inc. Single-use pneumatic safety syringe providing gas-driven needle retraction
US9649450B2 (en) 2004-09-03 2017-05-16 L.O.M. Laboratories Inc. Single use pneumatic safety syringe providing gas-driven needle retraction
US10335555B2 (en) 2004-09-03 2019-07-02 L.O.M. Laboratories Inc. Single-use pneumatic safety syringe providing gas-driven needle retraction
US10765815B2 (en) 2014-10-31 2020-09-08 L.O.M. Laboratories Inc. Retractable needle syringe
US10709847B2 (en) 2015-01-20 2020-07-14 L.O.M. Laboratories Inc. Retractable needle syringe with unitary propellant release module

Also Published As

Publication number Publication date
AU2001292549A1 (en) 2002-02-18
WO2002011796A1 (en) 2002-02-14
US6572584B1 (en) 2003-06-03
CA2437415C (en) 2007-06-26

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MKEX Expiry

Effective date: 20210803