WO2003063935A1 - Ensemble comprenant une aiguille et un systeme support d'aiguille/ fixation d'aiguille a une seringue - Google Patents

Ensemble comprenant une aiguille et un systeme support d'aiguille/ fixation d'aiguille a une seringue Download PDF

Info

Publication number
WO2003063935A1
WO2003063935A1 PCT/IB2002/005321 IB0205321W WO03063935A1 WO 2003063935 A1 WO2003063935 A1 WO 2003063935A1 IB 0205321 W IB0205321 W IB 0205321W WO 03063935 A1 WO03063935 A1 WO 03063935A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
syringe
housing
supporting
discoidal body
Prior art date
Application number
PCT/IB2002/005321
Other languages
English (en)
Inventor
Michael Jemec
Original Assignee
Michael Jemec
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 Michael Jemec filed Critical Michael Jemec
Publication of WO2003063935A1 publication Critical patent/WO2003063935A1/fr

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
    • A61M5/3287—Accessories for bringing the needle into the body; Automatic needle insertion
    • 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
    • A61M5/28—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle
    • A61M5/285—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle with sealing means to be broken or opened
    • A61M5/286—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle with sealing means to be broken or opened upon internal pressure increase, e.g. pierced or burst
    • 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

Definitions

  • the present invention relates to the field of instruments for medical use, and particularly the area concerned with assemblies comprising needles with means for supporting them and connecting them to a "pen"-type syringe for injections (generally subcutaneous) or for punctures for taking blood samples from the capillaries.
  • these assemblies are fixed, and are attached with the needles projecting out of the syringe.
  • an assembly consisting of a needle and supporting and connecting means in which the needle, held in position by elastic means, is entirely contained within a housing that can be connected to the end of a syringe.
  • an assembly 21 is essentially made up of a cylindrical housing 2, inside the cavity 2c of which there slides a discoidal body 3, embedded perpendicularly in the centre of which is a needle 1 of axially hollow type for subcutaneous injections.
  • the said housing 2 terminates at the end 2f nearest the tip P of the needle 1 in an end wall 5 with a central hole 5f for the said needle 1 to pass through.
  • elastic means consisting in this case of a helical spring 4 coaxial with the needle 1 which, when no force is being applied to them by the discoidal body 3, keep this discoidal body 3 in a position such that the needle 1, the length 1 of which is less than the axial length L of the said cavity 2c, is entirely contained within it, in other words inside the housing 2.
  • the needle 1 projects from both sides of the discoidal body 3, and also its opposite end Q from the tip P is sharpened so that it can penetrate by known methods through the seal 12g of the cartridge 12 of the liquid to be injected, which seal is pressed against it by the syringe 8, is penetrated by it and comes up against the discoidal body 3, which it then pushes (arrow F) as already explained against the spring 4 and causes the needle 1 to project out of the end wall 5, as indicated in broken lines.
  • the cartridge 12 is drawn back into the syringe 8 (arrow R) , removing the force from the discoidal body 3 which, due to the elastic return of the spring 4, moves back to its initial position in which the needle 1 is once again entirely contained within the housing 2. Consequently the needle 1 projects from the housing 2 only while an injection is being carried out, thus accomplishing the objects which the inventor had set himself.
  • the operation of the assembly 22 shown in Figure 2 is exactly the same as described above regarding the previous illustrative embodiment: in this case, however, the discoidal body 3 is connected to a solid needle 11 for taking capillary samples, this needle being embedded in it in such a way that it only projects from the side facing the end wall 5.
  • this plunger 13 passes into the space 6 and pushes the discoidal body 3 until the needle 11 is extending out of the housing 2 through the central hole 5f in the end wall 5 (as shown by the broken lines), compressing a spring 4 which later, once the sample has been taken and the plunger 13 pulled back again, exerts its elastic return action to move the discoidal body 3 and the embedded needle 11 into the cavity 2c inside the housing 2.
  • a housing of an assembly according to the invention may be selected from those known to those skilled in the art for similar applications; in the examples depicted here, these means consist simply of a threaded portion 20 on the end 2e of the housing 2 that screws into a similarly threaded part on the end of the barrel of the syringe.
  • these means consist simply of a threaded portion 20 on the end 2e of the housing 2 that screws into a similarly threaded part on the end of the barrel of the syringe.

Landscapes

  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (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)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

L'invention concerne un ensemble (21) comprenant une aiguille (1) et un système (2) support d'aiguille/fixation d'aiguille à une seringue de type 'stylet' (8), pour les injections et les perforations relatives à des prélèvements capillaires. Ledit système comprend une enceinte cylindrique (2), et dans la cavité (2c) de cette enceinte coulisse un corps discoïde (3), au centre duquel est incorporée une aiguille (1), perpendiculairement. Ce corps repose contre une unité élastique (4) qui est logée dans la même cavité (2c), et lorsqu'il n'est soumis à aucune force le corps en question maintient l'aiguille (1) entièrement à l'intérieur de l'enceinte (2). Ladite enceinte présente à une extrémité (2e) un système de fixation réversible sur la seringue, et à l'autre extrémité (2f) une paroi terminale (5) ayant un trou central (5f) qui laisse passer l'aiguille (1), laquelle peut ainsi sortir de l'enceinte (2), lorsqu'une pression est exercée sur l'unité élastique (4) via le corps discoïde (3).
PCT/IB2002/005321 2002-02-01 2002-12-12 Ensemble comprenant une aiguille et un systeme support d'aiguille/ fixation d'aiguille a une seringue WO2003063935A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH0174/02 2002-02-01
CH1742002 2002-02-01

Publications (1)

Publication Number Publication Date
WO2003063935A1 true WO2003063935A1 (fr) 2003-08-07

Family

ID=27626684

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2002/005321 WO2003063935A1 (fr) 2002-02-01 2002-12-12 Ensemble comprenant une aiguille et un systeme support d'aiguille/ fixation d'aiguille a une seringue

Country Status (1)

Country Link
WO (1) WO2003063935A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5695472A (en) * 1993-05-27 1997-12-09 Washington Biotech Corporation Modular automatic or manual emergency medicine injection system
WO2000009186A2 (fr) * 1998-08-11 2000-02-24 Medi-Ject Corporation Pistolet a injection associe a une aiguille
WO2001047586A1 (fr) * 1999-12-23 2001-07-05 Arnold Neracher Dispositif d'injection et systeme de propulsion associe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5695472A (en) * 1993-05-27 1997-12-09 Washington Biotech Corporation Modular automatic or manual emergency medicine injection system
WO2000009186A2 (fr) * 1998-08-11 2000-02-24 Medi-Ject Corporation Pistolet a injection associe a une aiguille
WO2001047586A1 (fr) * 1999-12-23 2001-07-05 Arnold Neracher Dispositif d'injection et systeme de propulsion associe

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