GB2459911A - Syringe with needle retracting into plunger - Google Patents

Syringe with needle retracting into plunger Download PDF

Info

Publication number
GB2459911A
GB2459911A GB0900838A GB0900838A GB2459911A GB 2459911 A GB2459911 A GB 2459911A GB 0900838 A GB0900838 A GB 0900838A GB 0900838 A GB0900838 A GB 0900838A GB 2459911 A GB2459911 A GB 2459911A
Authority
GB
United Kingdom
Prior art keywords
plunger
needle
syringe
barrel
seal
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.)
Withdrawn
Application number
GB0900838A
Other versions
GB0900838D0 (en
Inventor
Ebrahim Karolia
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.)
JACKSON KAROLIA TECHNOLOGIES Ltd
Original Assignee
JACKSON KAROLIA TECHNOLOGIES Ltd
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 JACKSON KAROLIA TECHNOLOGIES Ltd filed Critical JACKSON KAROLIA TECHNOLOGIES Ltd
Publication of GB0900838D0 publication Critical patent/GB0900838D0/en
Publication of GB2459911A publication Critical patent/GB2459911A/en
Withdrawn legal-status Critical Current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
    • A61M5/178—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
    • A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/344—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub using additional parts, e.g. clamping rings or collets
    • 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
    • A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/346—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub friction fit
    • 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
    • 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
    • A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/344—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub using additional parts, e.g. clamping rings or collets
    • A61M5/345—Adaptors positioned between needle hub and syringe nozzle
    • 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
    • A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/348—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub snap lock, i.e. upon axial displacement of needle assembly
    • 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

Landscapes

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

Abstract

The syringe unit comprises a needle holder, with a needle, spring and seal assembled inside, and a plunger. The plunger has a built in seal at the top and hollow section in the inside diameter and has a vacuum created to eliminate oxygen in order to prevent it reaching the blood stream. The needle holder is taper locked to the barrel and the needle and spring is held in position with clips inside the needle holder.

Description

AUTO RETRACT SYRINGE
DESCRIPTION
This invention relates to a syringe that automatically retracts the needle when the plunger is fully pushed into the syringe barrel. When a syringe is used for injecting the medicine, the safe disposal of the syringe becomes a serious issue in terms of cross contamination, poisoning, infection and serious injury.
Syringes in everyday use pose the above mentioned problems if left unattended and not disposed of in a correct manner. To overcome the issues mentioned above the present invention can contribute significantly towards addressing the safety issue. The new invention looks and operates in the same manner as a normal hypodermic syringe, except when the new invented syringe is used, the needle automatically retracts into the barrel during the last stage of the injection procedure.
The invention is now being described in a way of examples and references to the drawings.
Page 1 -figures A, B, C, D and E show the components of the syringe.
Each component is drawn on paper at different angles for easy understanding.
Page 2-figure A shows the needle body, rubber seal and spring. The drawings are positioned in order of assembly as the arrows show.
Figure B shows the assembled components inside the needle holderD Pca Pl-°r rct Ntd)e cp oc t*Jo.rrJ' (F,c. i4.i.ç) The hollow plunger is vaccum sealed to eliminate the risk of oxygen entering the blood system. -y4 / I trz'4c'i Qv Page 4 -figures A and B show the needle holder with the needle, sea! and spring ready assembled before and after insertion into the barrel by way of a taper lock.
Page 5 -figures 1 and 2 show the plunger position before the seal is punctured and the needle retracted into the plunger. Figure 3 shows the plunger seal broken and the needle released by the spring into the plunger.
The following information describes how the syringe works.
The needle holder is pushed firmly into the top of the barrel. The needle holder is taper locked into the intended position. The plunger is pushed into the bottom end of the barrel as with standard injections. The fluid is drawn and dispensed in the same manner as a normal syringe.
During the plunger push action the seal at the top of the plunger is being punctured by the bottom end of the needle body and at the same time the clips of the needle holder are pushed outwards. This action releases the compressed spring which allows the needle to be retracted into the plunger.

Claims (4)

  1. AUTO RETRACT SYRINGECLAIM1) The syringe is made up of 3 components. The barrel, needle holder and the plunger.The needle holder remains separate from the barrel until it is pushed and taper locked into the barrel. The needle holder has a needle spring and seal assembled inside. These components are held in position by clips in the inside diameter of the holder.
  2. 2) The hollow plunger has a thin seal at the top in order to maintain the vacuum and stop fluid entering be plunger during injection.
  3. 3) According to Claim 1, the compressed spring can only be released when the top end of the plunger pushes the clips outwards.
  4. 4) According to claim 2 the seal at the top of the plunger is broken by the sharp pointed end of the needle body when the contact is made (by the pointed end).
GB0900838A 2008-05-10 2009-01-19 Syringe with needle retracting into plunger Withdrawn GB2459911A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0808474.1A GB0808474D0 (en) 2008-05-10 2008-05-10 Auto retract syringe

Publications (2)

Publication Number Publication Date
GB0900838D0 GB0900838D0 (en) 2009-03-04
GB2459911A true GB2459911A (en) 2009-11-11

Family

ID=39571097

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0808474.1A Ceased GB0808474D0 (en) 2008-05-10 2008-05-10 Auto retract syringe
GB0900838A Withdrawn GB2459911A (en) 2008-05-10 2009-01-19 Syringe with needle retracting into plunger

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB0808474.1A Ceased GB0808474D0 (en) 2008-05-10 2008-05-10 Auto retract syringe

Country Status (1)

Country Link
GB (2) GB0808474D0 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5049133A (en) * 1989-01-24 1991-09-17 Villen Pascual Joee A Single-use safety syringe
US5053010A (en) * 1990-10-03 1991-10-01 Triad Technology Safety syringe with retractable needle
WO1993012830A1 (en) * 1992-01-03 1993-07-08 Lok-Needle Syringe Company Pty. Ltd. Hypodermic syringe with retractable needle
US5385551A (en) * 1993-09-22 1995-01-31 Shaw; Thomas J. Nonreusable medical device with front retraction
US6712787B1 (en) * 2000-05-19 2004-03-30 Edward D. Dysarz Self destructive safety syringe
US20050096604A1 (en) * 2000-01-26 2005-05-05 Tarcisio Maggioni Disposable safety syringe including an automatically retractable needle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5049133A (en) * 1989-01-24 1991-09-17 Villen Pascual Joee A Single-use safety syringe
US5053010A (en) * 1990-10-03 1991-10-01 Triad Technology Safety syringe with retractable needle
WO1993012830A1 (en) * 1992-01-03 1993-07-08 Lok-Needle Syringe Company Pty. Ltd. Hypodermic syringe with retractable needle
US5385551A (en) * 1993-09-22 1995-01-31 Shaw; Thomas J. Nonreusable medical device with front retraction
US20050096604A1 (en) * 2000-01-26 2005-05-05 Tarcisio Maggioni Disposable safety syringe including an automatically retractable needle
US6712787B1 (en) * 2000-05-19 2004-03-30 Edward D. Dysarz Self destructive safety syringe

Also Published As

Publication number Publication date
GB0900838D0 (en) 2009-03-04
GB0808474D0 (en) 2008-06-18

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20100902 AND 20100908

WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)