WO1995003845A1 - Seringue hypodermique de securite - Google Patents

Seringue hypodermique de securite Download PDF

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Publication number
WO1995003845A1
WO1995003845A1 PCT/AU1994/000436 AU9400436W WO9503845A1 WO 1995003845 A1 WO1995003845 A1 WO 1995003845A1 AU 9400436 W AU9400436 W AU 9400436W WO 9503845 A1 WO9503845 A1 WO 9503845A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
plunger
barrel
chamber
needle assembly
Prior art date
Application number
PCT/AU1994/000436
Other languages
English (en)
Inventor
Antony James Lake
Original Assignee
Antony James Lake
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 Antony James Lake filed Critical Antony James Lake
Priority to AU73417/94A priority Critical patent/AU7341794A/en
Publication of WO1995003845A1 publication Critical patent/WO1995003845A1/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
    • A61M5/50—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
    • A61M5/5013—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
    • 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
    • A61M2005/3103—Leak prevention means for distal end of syringes, i.e. syringe end for mounting a needle
    • A61M2005/3107—Leak prevention means for distal end of syringes, i.e. syringe end for mounting a needle for needles
    • A61M2005/3109—Caps sealing the needle bore by use of, e.g. air-hardening adhesive, elastomer or epoxy resin
    • 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
    • A61M2005/3128—Incorporating one-way valves, e.g. pressure-relief or non-return valves
    • 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
    • A61M2005/3206—Needle or needle hub disconnecting devices forming part of or being attached to the hub or syringe body
    • 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
    • A61M5/3278—Apparatus for destroying used needles or syringes
    • A61M2005/328—Apparatus for destroying used needles or syringes having needle tip encapsulating means, e.g. two-component hardenable compound or molten plastic
    • 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
    • A61M5/5013—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
    • A61M5/504—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the fluid passageway

Definitions

  • SAFETY HYPODERMIC SYRINGE TECHNICAL FIELD OF THE INVENTION
  • a safety hypodermic syringe and more particularly to a syringe designed to be used once and then rendered safe to prevent the possibility of so-called “needle stick” injuries in the medical environment.
  • a safety hypodermic syringe including: an elongate barrel defining a chamber for holding injectable medicament or the like between a front end thereof and a rear end thereof; a plunger having an elongate stem slidable longitudinally in said barrel chamber at its rear end; a needle-carrying needle assembly at the front end of the barrel chamber where it may be locked in forward position or unlocked by the operator; the plunger being movable forwardly with the needle assembly locked in said forward position to inject medicament from the chamber through a fluid passage through the needle assembly and through the needle, the parts being so made and arranged that, following a forward injection action of the plunger with the needle assembly locked in said forward position
  • the needle assembly can be rendered unlocked by the operator
  • I provide a syringe of the above type, wherein the plunger has at its front end a plunger piston sealably slidable in the barrel chamber, and wherein the needle assembly is slidable longitudinally in the barrel forwardly of the plunger and has a needle carrier piston sealably slidable in the front end of the chamber, the needle carrier including a foremost portion to receive the needle and retain same in use, the needle carrier and needle thereon being so dimensioned as to be withdrawable rearwardly as an assembly through a front end opening to the barrel.
  • the plunger piston and needle carrier piston are mounted separately of ' one another and are unconnected except that the carrier piston is subject to suction or pressure effects in the space therebetween upon reciprocation of the plunger, the barrel chamber being of uniform circular cross-section throughout its length and the plunger piston and needle carrier piston being of equal outside diameters.
  • the needle assembly is adapted to be held and locked in forward operative position by means including releasable clip means normally preventing withdrawal of the needle assembly but adapted to be released by the operator so that the needle assembly will be rendered unlocked.
  • the front end of the barrel chamber be adapted to accommodate an external cap or internal plug in fixed relationship thereto for sealing purposes after the needle assembly and needle thereof have been withdrawn by suction into the barrel chamber.
  • the needle passage to be rendered sealed by the operator is the needle passage which is of such diameter that a suitable clogging material, such as viscous petroleum jelly, may be drawn therein to a limited but clogging content upon initial withdrawal of the plunger, the fluid passage through the needle then being effectively rendered sealed so that suction effects are exerted on the needle assembly as the plunger is withdrawn further rearwardly.
  • a suitable clogging material such as viscous petroleum jelly
  • the fluid passage to be rendered sealed by the operator may comprise a flow passage through the needle assembly rearwardly of the needle and between the needle and a connecting opening to the chamber, said flow passage having an intermediate enlarged opening accommodating a valve member adapted to seat sealably on a valve seat about the rear end of the enlarged opening or to be supported non-sealably at the front end of the enlarged opening, whereby the fluid passage through the needle assembly can be rendered sealed by the operator when the latter causes the syringe to be disposed with its needle assembly to the chamber uppermost, or the fluid passage will be rendered and maintained unsealed when the syringe is disposed with the needle assembly lower than the plunger.
  • valve member is a ball valve such as a stainless steel ball of small diameter to minimise restriction of the passage past the valve member in the enlarged opening, the end of the latter remote from the chamber having centering flutes therearound to support the ball valve in non-sealing relationship when the ball contacts same gravitationally or when held there under pressure during an injection action of the plunger.
  • the plunger stem will have a weakened neck portion enabling it to be snapped off when it has reached a withdrawn position.
  • the rear end of the barrel may be open and unobstructed to facilitate breaking of the plunger stem, in which case an unthinking operator might withdraw the plunger completely before taking the opportunity of utilising the facility for breaking off the stem at the weakened neck portion.
  • this will do no harm since the partial vacuum will be broken and thus the plunger will separate from the needle carrier and still leave the latter and its retained needle within the barrel.
  • a snap-action closure cap to be pushed on and lock over the front opening (or an effective plug for the opening) so that there would be no way that accidental access could be achieved to either end of the barrel in any manner that could cause contact to be made with the retained needle.
  • the appropriately closed barrel, containing the needle in the safest possible arrangement, can then be disposed of together with the broken-off stem according to established procedures.
  • the cap could be replaced by any type of plug or equivalent sealing means, as mentioned above.
  • the barrel may suitably be a simple inexpensive cylinder so that the contained plunger piston and needle carrier piston are of equal diameters.
  • the front end of the barrel can conveniently have a peripheral inner flange which acts to retain the needle carrier and its piston from passing forwardly of the front extremity through the opening defined by the inner flange.
  • the front end of the needle carrier extends through and forwardly of that opening and is dimensioned to receive the needle fitment thereon, the total needle and carrier assembly being able to pass through the opening upon removal of the aforementioned retaining clip means.
  • the clip means may suitably be a plastic or equivalent member, of resilient or bendable material and of plate-like form, adapted to be clipped or snapped into a groove or recess at a retaining position where its laterally projecting edges will extend beyond and thus engage the front end of the barrel, so that the needle carrier assembly cannot pass through the opening defined by the flange.
  • the operator can grasp and forcibly pull away the retaining clip so that the needle carrier becomes free of protrusions and is unlocked so that it can enter the barrel when the plunger is withdrawn rearwardly provided that the needle passage or needle assembly passage has been closed off to create a partial vacuum.
  • FIG. 1 shows in part-sectional elevation a typical prior art syringe as currently employed
  • FIGS. 2A, 2B, 2C and 2D show diagrammatically the prior art syringe of Fig. 1 at its various stages progressively in normal use;
  • FIG. 3 is a view similar to that of Fig. 1 showing one illustrative embodiment of safety syringe according to my invention;
  • Fig. 4 is an enlarged sectional view in respect of the components in Detail A of Fig. 3;
  • Figs. 5A, 5B, 5C, 5D, 5E and 5F show in greater detail and in separated relationships certain components of my syringe of Figs. 3 and 4, namely the barrel, the plunger, the needle carrier, the needle, the cap, and the needle carrier clip, respectively;
  • Figs. 6A, 6B, 6C, 6D, 6E, 6F and 6G show diagrammatically the manner of using my illustrative embodiment as shown in Figs. 3, 4 and 5 hereof;
  • Fig. 7 shows in enlarged sectional detail view another embodiment of my syringe invention having a modified form of needle carrier incorporating a ball valve in the liquid or fluid passage therethrough, the syringe being held to face downwards so that the valve is in inoperative position;
  • Fig. 8 is similar to Fig. 7 but with the syringe held to face upwards so that the valve is in operative position, and Figs. 9A, 9B, 9C and 9D show the manner of using the modified embodiment of the invention shown in Figs. 7 and 8.
  • this known type of syringe 110 is of very basic construction and has a cylindrical barrel 111 defining a chamber 113 between its front end 114 and its rear end 115.
  • the contents of the chamber 113 are expressed through a passage in a needle 116 communicating through the hollow interior of a mounting adaptor 117 having a rear socket end 118 to wedge over a tapered needle carrier protrusion 119 which has a front opening 120 to the chamber 113.
  • the contents of the chamber 113 are expressed through the opening 120 and the needle 116 by a plunger 112 which has a front plunger piston 121 connected by a stem 122 of cruciform cross- section to a rearmost thumb plate 123 to be pulled or pushed by the operator.
  • a plunger 112 which has a front plunger piston 121 connected by a stem 122 of cruciform cross- section to a rearmost thumb plate 123 to be pulled or pushed by the operator.
  • Four flat thin plastic plates 124 make up the stem 122, it being convenient to make as many components as possible from plastics materials for economical reasons.
  • Any desired design details may be used in the plunger piston 121 provided that its exterior makes close sealably slidable contact within the chamber 113, suitably being of rubber or the like with at least two peripheral ridges 125 and 126 spaced by a groove 127.
  • the plunger piston 121 suitably moulded of rubber, it may contain a retaining recess 128 for the connector head 129 of the
  • Fig. 2A shows diagrammatically the prior art syringe 110 as supplied ready for use, with the plunger 112 inserted and the needle 116 fitted ready for use.
  • the chamber 113 will receive the injectable material 131 through the needle 116 and the front opening 120 so that the syringe 110 becomes "charged ready for use” as in Fig. 2B.
  • the operator then injects the patient so that the plunger 112 is foremost and the components resume the initial positions of Fig. 2A except that the needle 116 and other passages to the chamber including the front opening 120 will contain residual injectable materials as shown in the "following injection” view of Fig. 2C.
  • the safety hypodermic syringe 10 has an elongate barrel 11 of cylindrical form defining a cylindrical chamber 13 for holding injectable material 31 between a front end 14 and a rear end 15.
  • the plunger 12 is longitudinally slidable in the barrel 11 and has at its front end a plunger piston 21 sealably slidable in the chamber 13, the plunger 12 having a stem 22 behind the plunger piston 21 to permit digital reciprocation using a thumb plate 23.
  • the plunger 12, piston 21 and stem 22 are the same as in the prior art except that the four thin ' plastic plates 24 making up the stem 22 are each cut away at recesses 32 for weakening purposes.
  • the piston 21 has peripheral ridges 25 and 26 with a groove 27 therebetween, and it has an internal recess 28 for the connector head 29 of the stem, the restricted opening 30 defining shoulders 33 to retain said head 29 when the stem 22 is fitted and the plunger is installed.
  • a feature of my invention is that I provide a needle carrier 34 mounted so as to be longitudinally slidable in the barrel 11 forwardly of the plunger 12 and having a needle carrier piston 35 sealably slidable in the front end 14 of the chamber 13, the needle carrier 34 including a front carrier protrusion and core portion 19 to receive a needle 16 and retain it in use.
  • the front opening 20 to the chamber is located axially through the carrier 34 which is slidable within the barrel 11, whereas in the prior form the front opening 120 was through the front end of the barrel 111 itself.
  • the needle carrier 34 and needle 16 thereon are so dimensioned laterally of the main axis that they could be withdrawn rearwardly as an assembly through the front end of the chamber where there is a front opening 36 to the barrel 11.
  • the needle carrier 34 is normally held in forward operative position by bearing against the rear face of an internal flange 37 to limit the forward position and by having a clip member 38 which normally prevents withdrawal rearwardly of the carrier 34 and needle 16 through the opening 36, but which is a manually releasable clip adapted to be rendered inoperative after the needle has been used.
  • a feature of the invention is that the plunger piston 21 and needle carrier piston 35 are mounted separately of one another and are unconnected except that the carrier piston 35 is subject to suction or pressure effects in the space 39 between the two pistons upon reciprocation of the plunger 12.
  • the parts are so made and arranged that the plunger piston 21 can be withdrawn to "suck" the needle carrier 34 along with it under the conditions where (1) the plunger 12 has been moved by the operator to complete a forward stroke and thus is lying foremost, (2) the manually releasable clip means 38 has then been released by the operator, and (3) the operator has caused the passage through the needle 16 and hence the needle carrier to be sealed by a clogging material, or by some other clogging agent, or by a clogging object or member as instigated by the operator.
  • these are provided in the stem 22 adjacent the rear of the plunger piston 21 to afford a weakened neck portion 40 at which the stem 22 may be snapped off by manual pressure in a lateral lever action when the weakened neck portion 40 reaches the rear end 15 of the barrel 11 on completion of withdrawal of the plunger 12.
  • the rear end 15 is open and unobstructed to facilitate breaking off, and it follows that an unthinking operator might withdraw the plunger 12 completely before taking the opportunity to break it off at the weakened portion 40. However, this will do no harm since the partial vacuum will be broken and the needle carrier 34 will cease to follow the plunger, the needle carrier and needle still being retained in the barrel.
  • a snap-action closure cap 41 as shown in Fig. 5E to be pushed on and lock over the open front end at the opening 36 defined by the flange 37.
  • the cap 41 has annular teeth 42 around its inner mouth 43 and which engage in ratchet-like manner with external annular teeth 44 moulded in the front end of the barrel 11 as shown. This will encapsulate the needle completely for the desired purposes, with all components being able to be disposed of with maximum safety. Any suitable internal plug could be used instead.
  • the aforementioned clip means 38 could take any desired form, but as shown in Fig. 5F, it may suitably be a plastic sheet-like member 45 adapted to be clipped or snapped into a groove or recess 46 (see Fig. 4) in the needle carrier 34, there being laterally protruding edge portions 47 and 48 of the clip member 45 to engage the front end of the barrel to prevent the needle carrier assembly from sliding back into the chamber.
  • the needle 16 is mounted on the front core portion 19 of the needle carrier 34 which is fitted with a needle carrier piston 35, sliding movement thereof being prevented by the attachment of the clip means 38 in the form of a sheet-like plate 45 having edge protrusions.
  • my syringe is then used as in Fig. 6D to cause clogging of the needle 16 with viscous petroleum jelly, the plunger being withdrawn slightly for that purpose after the clip means have been removed and the needle tip has been inserted into the petroleum jelly.
  • the principles of the syringe could be incorporated in blood-taking syringes, it being thus understood that the invention is not limited solely to syringes for the injecting of drugs but also embraces blood-collecting syringes.
  • the stem breakage feature may be optional as an addition to the other features described, and of course any manner of closing off the needle opening may be employed, with the word "clogging" embracing all means for sealing off the opening.
  • the blocking material could be in an accessible cavity in the syringe cap or in some part of the syringe itself.
  • the needle carrier 34 could incorporate a chamber containing a viscous blocking medium, the chamber being able to be ruptured by external pressure applied by the operator after the syringe has been used, as for example by squeezing a rupturable membrane between the thumb and forefinger, so that the blocking medium enters and clogs the passage through the needle carrier.
  • FIG. 7 Yet another way of sealing the fluid passage to the chamber is shown in the further embodiment of the invention illustrated in Figs. 7, 8 and 9A to 9D, the modified syringe 10a therein having substantially the same features as in Fig. 3, corresponding parts having the same numerals suffixed by the letter "a”, but sealing of the opening 20.
  • through the needle carrier body 34a is effected by a stainless steel valve ball 52 disposed in an enlarged opening 53 having a valve seat 54 at the end adjacent the chamber 13a and centering flutes 55 at the other end, the flutes 55 ensuring that fluid flow is at all times unimpeded to and from the needle 16a, the syringe 10a being held to face downwards as in Fig. 7 when charging the chamber 13a (see Fig. 9A) or when injecting a patient (see Fig. 9B).

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

L'invention concerne une seringue hypodermique de sécurité (10) comprenant: un cylindre allongé (11) définissant une chambre (13) destinée à contenir un médicament injectable ou similaire entre une extrémité avant (14) et une extrémité arrière (15) de celui-ci; un piston (12) doté d'une tige allongée (22) à l'arrière et pouvant coulisser longitudinalement dans ladite chambre cylindrique (13); un ensemble aiguille (34) portant une aiguille à l'extrémité avant de la chambre cylindriques (13), qui peut être verrouillé dans sa position avancée ou déverrouillé par l'opérateur; le piston (12) pouvant se déplacer vers l'avant avec l'ensemble aiguille (34) verrouillé dans ladite position avant, pour injecter le médicament de la chambre (13) par un passage (20) à fluide traversant l'aiguille (16) et l'ensemble aiguille (34), les composants étant réalisés et disposés pour que, après le mouvement d'injection vers l'avant du plongeur (12) avec l'ensemble aiguille (34) verrouillé dans ladite position avant (1), l'ensemble aiguille (34) puisse être déverrouillé par l'opérateur, (2) le passage (20) à fluide traversant l'ensemble aiguille et l'aiguille pour aboutir dans la chambre cylindrique (13) puisse être fermé hermétiquement par l'opérateur, et (3) lorsque l'ensemble aiguille (34) a été déverrouillé et ledit passage (20) à fluide fermé hermétiquement, le retrait subséquent du piston (12) provoque le retrait de l'ensemble aiguille (34) par aspiration dans la chambre cylindrique (13), à mesure que le piston est tiré en arrière.
PCT/AU1994/000436 1993-07-30 1994-08-01 Seringue hypodermique de securite WO1995003845A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU73417/94A AU7341794A (en) 1993-07-30 1994-08-01 Safety hypodermic syringe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPM0293 1993-07-30
AUPM000293 1993-07-30

Publications (1)

Publication Number Publication Date
WO1995003845A1 true WO1995003845A1 (fr) 1995-02-09

Family

ID=3777063

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1994/000436 WO1995003845A1 (fr) 1993-07-30 1994-08-01 Seringue hypodermique de securite

Country Status (1)

Country Link
WO (1) WO1995003845A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004052432A2 (fr) * 2002-12-06 2004-06-24 David William Parker Ameliorations apportees a des seringues de surete a aiguille retractable
EP2010248A2 (fr) * 2006-04-03 2009-01-07 Safeshot Technologies, Inc. Seringue de sécurité rétractable actionnée par fluide
WO2009127122A1 (fr) * 2008-04-16 2009-10-22 Li Zhiyun Seringue de sûreté

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0337252A1 (fr) * 1988-04-13 1989-10-18 Habley Medical Technology Corporation Seringue de sécurité
US4908022A (en) * 1988-08-15 1990-03-13 Habley Medical Technology Corporation Disposable safety syringe having a retractable needle cannula and cannula lock
JPH02164373A (ja) * 1988-12-17 1990-06-25 Yuujin Kenkyusho:Kk 注射器
US5125898A (en) * 1990-03-22 1992-06-30 Harry Kaufhold, Jr. Disposable syringe with automatic needle retraction

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0337252A1 (fr) * 1988-04-13 1989-10-18 Habley Medical Technology Corporation Seringue de sécurité
US4908022A (en) * 1988-08-15 1990-03-13 Habley Medical Technology Corporation Disposable safety syringe having a retractable needle cannula and cannula lock
JPH02164373A (ja) * 1988-12-17 1990-06-25 Yuujin Kenkyusho:Kk 注射器
US5125898A (en) * 1990-03-22 1992-06-30 Harry Kaufhold, Jr. Disposable syringe with automatic needle retraction

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, C-758, page 50; & JP,A,02 164 373 (YUUJIN KENKYUSHO) 25 June 1990. *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004052432A2 (fr) * 2002-12-06 2004-06-24 David William Parker Ameliorations apportees a des seringues de surete a aiguille retractable
WO2004052432A3 (fr) * 2002-12-06 2004-08-05 David William Parker Ameliorations apportees a des seringues de surete a aiguille retractable
EP2010248A2 (fr) * 2006-04-03 2009-01-07 Safeshot Technologies, Inc. Seringue de sécurité rétractable actionnée par fluide
EP2010248A4 (fr) * 2006-04-03 2009-04-29 Safeshot Technologies Llc Seringue de sécurité rétractable actionnée par fluide
WO2009127122A1 (fr) * 2008-04-16 2009-10-22 Li Zhiyun Seringue de sûreté
US8690825B2 (en) 2008-04-16 2014-04-08 Sunwell Biotech Co., Ltd. Safety syringe

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