CA2288461A1 - Improved safety syringe - Google Patents

Improved safety syringe Download PDF

Info

Publication number
CA2288461A1
CA2288461A1 CA002288461A CA2288461A CA2288461A1 CA 2288461 A1 CA2288461 A1 CA 2288461A1 CA 002288461 A CA002288461 A CA 002288461A CA 2288461 A CA2288461 A CA 2288461A CA 2288461 A1 CA2288461 A1 CA 2288461A1
Authority
CA
Canada
Prior art keywords
barrel
needle
needle holder
plunger
assembly
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
CA002288461A
Other languages
French (fr)
Other versions
CA2288461C (en
Inventor
Sakharam D. Mahurkar
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.)
Individual
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
Application filed by Individual filed Critical Individual
Publication of CA2288461A1 publication Critical patent/CA2288461A1/en
Application granted granted Critical
Publication of CA2288461C publication Critical patent/CA2288461C/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
    • 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
    • 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0606—"Over-the-needle" catheter assemblies, e.g. I.V. catheters
    • 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
    • A61M5/3232—Semi-automatic needle retraction, i.e. in which triggering of the needle retraction requires a deliberate action by the user, e.g. manual release of spring-biased retraction means

Abstract

A single-use safety syringe assembly comprises an elongated, generally cylindrical barrel which forms a hollow nozzle located at the distal end of the barrel and which opens into the interior of the barrel. A plunger is slidably mounted in the barrel and forms a longitudinal cavity. A needle holder carries a hollow needle on its distal end, and the needle holder is slidably mounted in the longitudinal cavity of the plunger.
A biasing arrangement urges the needle holder in a direction for retracting the needle into the barrel. However, a releasable latching arrangement retains the needle holder against the urging of the biasing arrangement in a position wherein the needle projects from the barrel. An In-Barrel assembly sequence is provided which permits sequentially inserting components of the syringe into the barrel and effecting assembly with a push of the plunger. An OTN catheter may also be employed in combination with the syringe assembly.
CA002288461A 1998-11-04 1999-11-03 Improved safety syringe Expired - Lifetime CA2288461C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/187,316 1998-11-04
US09/187,316 US6156013A (en) 1998-11-04 1998-11-04 Safety syringe

Publications (2)

Publication Number Publication Date
CA2288461A1 true CA2288461A1 (en) 2000-05-04
CA2288461C CA2288461C (en) 2005-07-05

Family

ID=22688484

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002288461A Expired - Lifetime CA2288461C (en) 1998-11-04 1999-11-03 Improved safety syringe

Country Status (8)

Country Link
US (2) US6156013A (en)
EP (1) EP0998953B1 (en)
JP (1) JP2000140111A (en)
KR (1) KR100598884B1 (en)
AT (1) ATE269728T1 (en)
AU (1) AU752319B2 (en)
CA (1) CA2288461C (en)
DE (1) DE69918242T2 (en)

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Also Published As

Publication number Publication date
AU752319B2 (en) 2002-09-12
JP2000140111A (en) 2000-05-23
CA2288461C (en) 2005-07-05
DE69918242D1 (en) 2004-07-29
US6206856B1 (en) 2001-03-27
US6156013A (en) 2000-12-05
ATE269728T1 (en) 2004-07-15
KR100598884B1 (en) 2006-07-10
AU5598199A (en) 2000-05-11
EP0998953A1 (en) 2000-05-10
KR20000035205A (en) 2000-06-26
DE69918242T2 (en) 2009-10-01
EP0998953B1 (en) 2004-06-23

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