CA2409628A1 - Needle holder positioning structure for safety hypodermic syringe - Google Patents

Needle holder positioning structure for safety hypodermic syringe Download PDF

Info

Publication number
CA2409628A1
CA2409628A1 CA 2409628 CA2409628A CA2409628A1 CA 2409628 A1 CA2409628 A1 CA 2409628A1 CA 2409628 CA2409628 CA 2409628 CA 2409628 A CA2409628 A CA 2409628A CA 2409628 A1 CA2409628 A1 CA 2409628A1
Authority
CA
Canada
Prior art keywords
needle holder
barrel
sleeve
positioning structure
hypodermic syringe
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
CA 2409628
Other languages
French (fr)
Other versions
CA2409628C (en
Inventor
Chang-Pi Lo
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.)
Vantex Biotechnology Co Ltd
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
Priority to CA 2409628 priority Critical patent/CA2409628C/en
Publication of CA2409628A1 publication Critical patent/CA2409628A1/en
Application granted granted Critical
Publication of CA2409628C publication Critical patent/CA2409628C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

A needle holder positioning structure for safety hypodermic syringe is disclosed, which includes a barrel, a needle holder with a sleeve, and a locating ring. The sleeve of needle holder said sleeve has a front engagement section press-fitted into the inside of a front small inner diameter section of the barrel and a springy rear expansion section, the springy rear expansion section being expanded and positioned in between a shoulder and an inside flange in the barrel when a plunger inserted into the barrel to push the locating ring forwards and to force a front neck of the locating ring into a backwardly extended annular coupling chamber in the sleeve of the needle holder.
CA 2409628 2002-10-25 2002-10-25 Needle holder positioning structure for safety hypodermic syringe Expired - Fee Related CA2409628C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2409628 CA2409628C (en) 2002-10-25 2002-10-25 Needle holder positioning structure for safety hypodermic syringe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2409628 CA2409628C (en) 2002-10-25 2002-10-25 Needle holder positioning structure for safety hypodermic syringe

Publications (2)

Publication Number Publication Date
CA2409628A1 true CA2409628A1 (en) 2004-04-25
CA2409628C CA2409628C (en) 2006-06-06

Family

ID=32399793

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2409628 Expired - Fee Related CA2409628C (en) 2002-10-25 2002-10-25 Needle holder positioning structure for safety hypodermic syringe

Country Status (1)

Country Link
CA (1) CA2409628C (en)

Also Published As

Publication number Publication date
CA2409628C (en) 2006-06-06

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20141027