CA2348984A1 - Hypodermic syringe with selectively retractable needle - Google Patents

Hypodermic syringe with selectively retractable needle Download PDF

Info

Publication number
CA2348984A1
CA2348984A1 CA002348984A CA2348984A CA2348984A1 CA 2348984 A1 CA2348984 A1 CA 2348984A1 CA 002348984 A CA002348984 A CA 002348984A CA 2348984 A CA2348984 A CA 2348984A CA 2348984 A1 CA2348984 A1 CA 2348984A1
Authority
CA
Canada
Prior art keywords
plunger
syringe
stopper
receiver
hub
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
CA002348984A
Other languages
French (fr)
Other versions
CA2348984C (en
Inventor
Roger Hoeck
Charles L. Bush, Jr.
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.)
Becton Dickinson and Co
Original Assignee
Becton Dickinson and Co
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 Becton Dickinson and Co filed Critical Becton Dickinson and Co
Publication of CA2348984A1 publication Critical patent/CA2348984A1/en
Application granted granted Critical
Publication of CA2348984C publication Critical patent/CA2348984C/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

Abstract

A hypodermic syringe with a selectively retractable needle includes an elongate barrel defining a receiver and a hollow bore. The syringe has a plunger with an elongate cavity open to the proximal end. The plunger is sized to fit within the bore of the barrel for a slidable movement to define a chamber for receiving and expelling fluids. The inside diameter of the cavity in the plunger is sufficient to accept telescopically at least a part of a first portion of the plunger. A second portion and the first portion are joined at an attachment to form a shoulder extending outwardly from the first portion, with the plunger being telescopically collapsible by movement of the second portion into the cavity by of sufficient distal force to frangibly disrupt the attachment. The syringe includes an elongate sleeve sized to fit over the first portion of the plunger and extend from the shoulder. The plunger includes a stopper to a form fluid tight seal with the barrel. The sleeve has a cutting surface inside of the stopper. The syringe includes a hub with a proximal flange and a passageway within the receiver. The syringe has a needle with a pointed distal end mounted in the passageway of the hub extending distally outwardly. When sufficient distal force is applied to collapse the plunger, the cutting surface of the sleeve cuts through the stopper and through the flange of the hub and releases it from the receiver to retract the needle.
CA002348984A 2000-06-29 2001-05-28 Hypodermic syringe with selectively retractable needle Expired - Lifetime CA2348984C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/606,743 2000-06-29
US09/606,743 US6585690B1 (en) 2000-06-29 2000-06-29 Hypodermic syringe with selectivity retractable needle

Publications (2)

Publication Number Publication Date
CA2348984A1 true CA2348984A1 (en) 2001-12-29
CA2348984C CA2348984C (en) 2009-05-19

Family

ID=24429269

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002348984A Expired - Lifetime CA2348984C (en) 2000-06-29 2001-05-28 Hypodermic syringe with selectively retractable needle

Country Status (13)

Country Link
US (1) US6585690B1 (en)
EP (1) EP1166809B1 (en)
JP (1) JP4903318B2 (en)
CN (1) CN1208097C (en)
AT (1) ATE262936T1 (en)
AU (1) AU781758B2 (en)
BR (1) BR0102521B1 (en)
CA (1) CA2348984C (en)
DE (1) DE60102517T2 (en)
DK (1) DK1166809T3 (en)
ES (1) ES2218303T3 (en)
MX (1) MXPA01006743A (en)
NZ (1) NZ512324A (en)

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Also Published As

Publication number Publication date
CN1208097C (en) 2005-06-29
EP1166809A1 (en) 2002-01-02
CN1330960A (en) 2002-01-16
MXPA01006743A (en) 2002-04-05
AU5396501A (en) 2002-01-03
DE60102517D1 (en) 2004-05-06
ES2218303T3 (en) 2004-11-16
BR0102521A (en) 2002-02-05
EP1166809B1 (en) 2004-03-31
AU781758B2 (en) 2005-06-09
DE60102517T2 (en) 2005-02-03
NZ512324A (en) 2003-04-29
BR0102521B1 (en) 2010-05-04
JP4903318B2 (en) 2012-03-28
ATE262936T1 (en) 2004-04-15
US6585690B1 (en) 2003-07-01
JP2002085563A (en) 2002-03-26
CA2348984C (en) 2009-05-19
DK1166809T3 (en) 2004-05-10

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Effective date: 20210528