CA2156995A1 - Safety Shield Having Spring Tether - Google Patents

Safety Shield Having Spring Tether

Info

Publication number
CA2156995A1
CA2156995A1 CA2156995A CA2156995A CA2156995A1 CA 2156995 A1 CA2156995 A1 CA 2156995A1 CA 2156995 A CA2156995 A CA 2156995A CA 2156995 A CA2156995 A CA 2156995A CA 2156995 A1 CA2156995 A1 CA 2156995A1
Authority
CA
Canada
Prior art keywords
needle cannula
distal
tip
tip guard
spring tether
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
CA2156995A
Other languages
French (fr)
Other versions
CA2156995C (en
Inventor
Paul Dicesare
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 CA2156995A1 publication Critical patent/CA2156995A1/en
Application granted granted Critical
Publication of CA2156995C publication Critical patent/CA2156995C/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
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3275—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel being connected to the needle hub or syringe by radially deflectable members, e.g. longitudinal slats, cords or bands
    • 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
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/3247—Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
    • A61M2005/325—Means obstructing the needle passage at distal end of a needle protection sleeve

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)
  • Finger-Pressure Massage (AREA)

Abstract

A safety shield is provided for an elongate needle cannula having a proximal end and a sharply pointed distal tip. The safety shield includes an anchor fixedly disposed near the proximal end of the needle cannula. The safety shield further includes a tip guard that is slidably movable along the needle cannula from a proximal position near the anchor to a distal position where the tip guard protectively surrounds the distal tip of the needle cannula. An elongate spring tether formed from a resiliently deflectable material has a proximal end connected to the anchor and a distal end connected to the tip guard. The spring tether is deflected into a loop about an axis extending orthogonal to the needle cannula when the tip guard is in the proximal position.The spring tether has a length which permits the tip guard to slide into its distal position without sliding completely of the distal end of the needle cannula.
Resiliency of the spring tether keeps the tip guard in its proximal position.
However, after sufficient manually generated movement of the tip guard in a distal direction, the resiliency of the spring tether will propel the tip guard into its distal position for safely shielding the tip of the needle cannula.
CA002156995A 1994-08-26 1995-08-25 Safety shield having spring tether Expired - Fee Related CA2156995C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/296,575 US5423766A (en) 1994-08-26 1994-08-26 Safety shield having spring tether
US08/296,575 1994-08-26

Publications (2)

Publication Number Publication Date
CA2156995A1 true CA2156995A1 (en) 1996-02-27
CA2156995C CA2156995C (en) 1999-02-23

Family

ID=23142621

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002156995A Expired - Fee Related CA2156995C (en) 1994-08-26 1995-08-25 Safety shield having spring tether

Country Status (6)

Country Link
US (1) US5423766A (en)
EP (1) EP0702972B1 (en)
JP (1) JP2781750B2 (en)
CA (1) CA2156995C (en)
DE (1) DE69528330T2 (en)
ES (1) ES2183856T3 (en)

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Also Published As

Publication number Publication date
ES2183856T3 (en) 2003-04-01
JP2781750B2 (en) 1998-07-30
CA2156995C (en) 1999-02-23
DE69528330T2 (en) 2003-05-15
JPH0871151A (en) 1996-03-19
DE69528330D1 (en) 2002-10-31
EP0702972A1 (en) 1996-03-27
US5423766A (en) 1995-06-13
EP0702972B1 (en) 2002-09-25

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Effective date: 20140826