WO2016116726A1 - Seringue avec aiguille rétractable dans le piston par vide - Google Patents

Seringue avec aiguille rétractable dans le piston par vide Download PDF

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Publication number
WO2016116726A1
WO2016116726A1 PCT/GB2015/051387 GB2015051387W WO2016116726A1 WO 2016116726 A1 WO2016116726 A1 WO 2016116726A1 GB 2015051387 W GB2015051387 W GB 2015051387W WO 2016116726 A1 WO2016116726 A1 WO 2016116726A1
Authority
WO
WIPO (PCT)
Prior art keywords
plunger
needle assembly
plug
syringe
storage chamber
Prior art date
Application number
PCT/GB2015/051387
Other languages
English (en)
Inventor
Martin HEYWOOD
Ebrahim Karolia
Original Assignee
Commodious Llp
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 Commodious Llp filed Critical Commodious Llp
Publication of WO2016116726A1 publication Critical patent/WO2016116726A1/fr

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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    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston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
    • A61M5/34—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
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M2005/3123—Details having air entrapping or venting means, e.g. purging channels in pistons
    • 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
    • A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/323—Connection between plunger distal end and needle hub proximal end, e.g. stud protruding from the plunger
    • 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
    • A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/3231—Proximal end of needle captured or embedded inside piston head, e.g. by friction or hooks
    • 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
    • A61M2005/3236—Trigger provided at the distal end, i.e. syringe end for mounting a needle
    • 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
    • A61M2005/3241—Needle retraction energy is accumulated inside of a hollow plunger rod
    • A61M2005/3242—Needle retraction by vacuum

Definitions

  • This invention relates generally to a safety syringe of the type for use with a hollow needle.
  • the present invention relates to a hollow plunger and clip that can be fitted to a conventional syringe that uses separately fitted needle assemblies with various needle sizes according to the task.
  • the needle and assembly are retracted into a storage chamber, located in the plunger, thereby preventing accidental pricking after use and making the syringe so it cannot be re-used.
  • the retraction of the needle and assembly is effected by a vacuum created prior to normal operation of the syringe.
  • the retraction is effected automatically during normal operation of the syringe and requires no additional actions from the user of the syringe.
  • a syringe of this general type is sometimes referred to as an "auto retractable safety syringe"; what is meant by this term is that the needle retracts within the body of the syringe automatically and not by any additional manual actions and furthermore the syringe and/or needle cannot be re-used.
  • the partial vacuum within the protective sheath causes the sheath to fold inwardly upon itself so that the needle extends beyond the protective sheath and may be used for injections.
  • the double wall of the protective sheath can be breached in one place so that the inside of the protective sheath reaches atmospheric pressure.
  • the protective sheath then extends to cover the projecting needle.
  • the protective sheath may interfere with use of the syringe as it may obstruct the view of the point the needle is to be inserted into the patient.
  • it is inconvenient to use after injection, the user must change the user's hand position on the syringe in order to breach the double wall and activate the sheath. In this manner activation of the safety mechanism is not automatic following injection of the medicament.
  • the protective safety device shown in U.S. Patent No. 5, 188,614 is a hollow cylindrical casing that encompasses the syringe.
  • a dual component foaming agent is disposed at the downstream end of the casing. Following injection, the two components of the dual component foaming agent are mixed, creating an expanding foam mixture that forces the syringe back within the casing and encompasses the needle.
  • this device suffers from the disadvantages that the casing may interfere with the use of the syringe in making injections as it is designed to fit over a conventional syringe thereby changing the size and feel of the device as compared to a conventional syringe.
  • a considerable amount of material is necessary in order to make the protective sheath, increasing the expense of both making and disposing of the device.
  • U.S. Patent No. 6, 193,695 discloses a safety syringe comprising a vacuum chamber on the upstream side of the plunger head. Following injection of medicament, the plunger head engages the needle head, the ambient atmospheric pressure external to the needle head acts on the needle head, forcing the needle and plunger back against the vacuum into the syringe body. The plunger arm may then be snapped off by the user to prohibit further use of the needle. This device suffers from the disadvantage that accidental re-extension of the needle is possible if the plunger arm is not snapped off by the user.
  • U.S. Patent No. 6,413,236 discloses a safety syringe comprising a vacuum chamber on the upstream side of the plunger head. Following injection of medicament, the plunger head engages the needle head, and the ambient atmospheric pressure external to the needle head acts on the needle head, forcing the needle and plunger back against the vacuum into the syringe body. In this patent, in contrast to U.S.
  • Patent No.6, 193,695 the needle is lodged in the syringe body at an angle so that the piercing tip end of the needle is pressed against the inner surface of the syringe prohibiting re-extension of the needle even though the plunger arm is fully extended outside the syringe body.
  • this device still has the disadvantage that if the user does not apply a constant injection force, there is the possibility that the plunger will retract under the vacuum before the medicament is completely injected, thereby causing the syringe to work in reverse especially when clearing an air bubble in the fluid.
  • a syringe designed to provide an optimal solution to the problem of prevention of accidental needle pricking after the use of the syringe for injection would include the following characteristics: 1 .
  • the syringe mechanism should be relatively simple, in that it should be made from as few parts as possible, consistent with its design objectives, and should be simple to operate with no training required for use.
  • the syringe mechanism should reliably retract the needle so that accidental pricking is prevented.
  • the syringe should be as inexpensive to manufacture as possible.
  • Safety-related means should not appreciably interfere with the feel of the syringe in the Hand of the user.
  • a reliable safety device should prevent the needle from becoming once again exposed. It is at least an object of one or more aspects of the present invention to solve one or more of the above-mentioned problems and to provide an improved syringe with a retractable-needle that also achieves one or more of the objectives stated above as numbers 1 to 6.
  • a plunger for a syringe comprising a storage chamber for storing a needle assembly and means for creating a retracting vacuum within the storage chamber, wherein the retracting vacuum is operable to retract a needle assembly into the storage chamber.
  • the means for creating a retracting vacuum comprises a secondary plunger.
  • the secondary plunger is located within the storage chamber.
  • the secondary plunger is moveable, preferably between position and a second position in the storage chamber.
  • the secondary plunger is depressed[CTi] and substantially inside the storage chamber, preferably in the second position the secondary plunger is withdrawn and substantially outside the storage chamber.
  • the secondary plunger creates the retracting vacuum within the storage chamber.
  • the secondary plunger is one-use and preferably non-returnable from the second position.
  • the secondary plunger comprises a rod, and a plug.
  • the rod is retracted within the storage chamber and the plug is located at an upper end of the storage chamber, and in the second position the rod is released from the storage chamber [CT2]and the plug is located at a lower end of the storage chamber.
  • the rod extends from the lower end of the storage chamber, preferably the rod extends by an amount sufficient to allow the rod to be grasped by a user.
  • a receiving chamber i[CT4][A5] is located at the lower end of the storage chamber.
  • the receiving chamber is operable to receive at least a part of the plug. More preferably, the receiving chamber is operable to receive at least a part of the plug upon movement from the first position to the second position.
  • At least a part of the plug is received in the receiving chamber, more preferably the plug expands into the receiving chamber.
  • the plug and rod are coupled together.
  • the rod is released from the plug, therefore allowing full release of the rod.
  • the rod is released from the plug by expansion ;[CT8]of the plug into the receiving chamber.
  • the rod is then removable from the plunger.
  • the plug comprises a socket in which an end of the rod is captivated, upon expansion of the plug into the receiving chamber, the socket deforms and the end of the rod is released.
  • the plug is formed from an expandable material, such as for example rubber.
  • a retracting vacuum is created within the storage chamber, more preferably the rod enables a user to move the plug from the first position to the second position and create the retracting vacuum.
  • the plug when located in the second position in the receiving chamber, seals the storage chamber, and therefore seals the retracting vacuum therein.
  • the storage chamber is sized so as to house the needle assembly without any needle protrusion from the plunger.
  • the storage chamber is sized to accommodate any needle size that may be used within the needle assembly.
  • a barrel for a syringe comprising a fluid storage compartment, a plunger according to the first aspect of the present invention, and retaining means for a needle assembly.
  • the retaining means for a needle assembly comprises a clip operable to mutually engage with a needle assembly, suitably when a needle assembly is inserted therein.
  • the clip is annular.
  • the clip comprises a release mechanism.
  • the release mechanism is operable to release the needle assembly from the retaining means and allow the needle assembly to move.
  • the plunger is operable to move between a first position and a second position, preferably the plunger is withdrawn in the first position, and depressed in the second position.
  • the fluid storage compartment is filled with fluid.
  • the fluid storage compartment is empty of fluid.
  • movement of the plunger to the first position draws fluid into the fluid storage compartment.
  • movement of the plunger from the first to the second position expels fluid from the fluid storage compartment.
  • the fluid movement into or out of the fluid storage compartment is via the needle assembly.
  • the fluid in the barrel may be a gas and/or liquid, preferably the fluid is a liquid more preferably a liquid for providing a medical or cosmetic benefit, for example: relief from and/or treatment and/or therapy and/or diagnosis of a disease and/or ailment and/or condition.
  • the liquid is for providing an anesthetic effect, [AH]
  • the release mechanism is activated when the plunger is depressed, in the second position. More preferably, the release mechanism is activated by pressure exerted thereon by the plunger when depressed.
  • a syringe comprising a barrel according to a second aspect, a plunger according to the first aspect, and a needle assembly.
  • the needle assembly is operable to move between a first position, and a second position.
  • the first position is such that the needle assembly is extended and exposed.
  • the second position is such that the needle assembly is retracted and protected.
  • the needle assembly is protected within the storage chamber of the plunger.
  • the needle assembly is in the first position during use of the syringe, and preferably the needle assembly is in the second position after use of the syringe.
  • the needle assembly is moved between the first and second positions by the retracting vacuum within the storage chamber.
  • the retracting vacuum is created as described above in relation to the first aspect.
  • the retracting vacuum is exerted on the needle assembly after depression of the plunger.
  • depression of the plunger allows the retracting vacuum to exert on the needle assembly by activation of the release mechanism, as described above in relation to the second aspect, and by removal of the plug from the receiving chamber. More preferably, full depression of the plunger allows the retracting vacuum to exert on the needle assembly.
  • both the release mechanism is activated and the plug is removed from the receiving chamber by the depression of the plunger, preferably both simultaneously.
  • both actions must take place before the retracting vacuum is exerted on the needle assembly.
  • the plug is removed from the receiving chamber by deformation of the plug such that it is no longer received within the receiving chamber.
  • deformation of the plug is caused by the needle assembly engaging with the socket of the plug, said socket being empty after the removal of the rod therefrom before use of the syringe.
  • the needle assembly engages with the socket of the plug by pressure exerted thereon when the plunger is depressed.
  • the plug and needle assembly Upon removal of the plug from the receiving chamber and activation of the needle assembly release mechanism, preferably the plug and needle assembly are engaged, and preferably the plug and needle assembly are moved from the first position to the second position, and are therefore retracted into the storage chamber of the plunger by the action of the retracting vacuum therein.
  • a needle assembly for use with the syringe according to the third aspect.
  • the needle assembly is sized to fit within the syringe, preferably within the barrel, more preferably within the storage chamber of the plunger.
  • the needle assembly is operable to be attached to the syringe, preferably attached to the barrel of the syringe.
  • the needle assembly is attached to the syringe by engagement with the retaining means, more preferably by engagement with the retaining clip.
  • the needle assembly comprises a head and a needle.
  • the head comprises one or more protrusions.
  • the protrusions are annular.
  • the protrusions extend outwards from the head, preferably to form a channel.
  • the channel is annular.
  • the channel is operable to mutually engage the retaining means, more preferably the retaining means rests within the channel.
  • the one or more protrusions form a seal against the retaining means, thereby preventing loss of fluid during dispensing or failure to draw fluid in during filling of the barrel.
  • the protrusions are formed from a sealing material, such as for example a rubber or plastic material.
  • the needle assembly further comprises a port for allowing fluid to be drawn into and dispensed from the barrel.
  • the port is in fluid communication with the barrel and the needle.
  • Pr ete rab the port extends lat eral iy throi j
  • the lateral port extends circumferentially around the head such that fluid in the fluid storage compartment can exit the barrel at any point on a side of the head.
  • the ill t extends in to the 1 nead ' verticall y.
  • the heai d preferably lllf arises vertic ally £ aligned serrat ions.
  • Prefe ;rablv therefc are when the plunger is fully depressed. and the needle ⁇ issembl y enters the plug, the fizid in fluid storage compartment can travel up and over the head via the serrations and still exit the barrel.
  • the head of the needle assembly is sized so as to engage with the socket of the plug, such that when the plunger is depressed, preferably fully depressed, the head of the needle assembly is engaged within the socket of the plug.
  • a kit for assembling a syringe according to the third aspect comprising:
  • the kit may comprise various needle assemblies of different gauges and shapes for different applications.
  • the present invention proposes that the user can select different size needles without any modification required in order for the system to operate. [A13]
  • the kit may comprise one or more fluids for use with the syringe, the fluid being defined as hereinabove. Further preferred features of the kit are as defined above in relation to the first, second, third, and fourth aspects.
  • the needle assembly is held outside the storage chamber of the hollow plunger and kept exposed by the retaining clip.
  • [CTi 4][Ai 5]the plunger engages with the retaining clip and releases the needle assembly, which is then drawn into the hollow plunger by the retracting force of the vacuum thereon such that the needle and assembly are no longer exposed.
  • the present invention requires the user only to remove the rod from the plunger in order for the system to operate there are no additional movements or actions required by the user other than use of the syringe in a conventional manner.
  • the syringe of the present invention can only be used once.
  • the syringe of the present invention does not require a complex manufacturing process, or have a complex mechanism.
  • Figure 1 shows a cross sectional of one embodiment of a syringe prior to fitting the needle assembly.
  • Figure 2 shows a cross sectional of one embodiment of a syringe with the drawing stick nearly removed from the syringe, the stick has pulled the grommet from its start position as shown in figure 1 and thus created a vacuum.
  • Figure 3 shows a cross sectional of one embodiment of a syringe with the vacuum created the stick dispensed with and the needle assembly fitted and ready to use.
  • Figure 4 shows a cross sectional of one embodiment of a syringe with the vacuum created and the plunger withdrawn to an upward position so that the syringe barrel is filled with fluid.
  • Figure 5 shows a cross sectional of an embodiment of a syringe where all the fluid has been dispensed the plunger has reached its final position, the retaining clip has been released and the needle assembly has been drawn up into the plunger.
  • a syringe assembly is shown prior to fitting the needle assembly a fluid plunger 1 is shown prior to use with the head of a drawing stick 1 1 securely attached into a chamber 2 of the grommet 3 in the starting position at the top of the plunger 1 .
  • the syringe barrel 5 cannot be fitted with a needle assembly to be held in place by the clips 7 because the drawing stick is occupying the position of the needle head.
  • An expansion chamber 9 within the body of the hollow plunger 1 is shown empty as it would be at this stage of use of the syringe.
  • FIG. 2 a syringe assembly is shown where the user has withdrawn the stick 1 1 to a position where the grommet 3 has been drawn from its starting position towards the head of the hollow plunger 1 and come to rest in an expansion chamber 9.
  • the expansion chamber 9 allows the grommet 3 to expand to such an extent that the internal chamber 2 cannot maintain the grip on the stick 1 1 and it is shown partially withdrawn from the syringe assembly.
  • the expansion chamber 9 is so designed that in allowing the grommet 3 to expand the vacuum force created is not great enough to retract the grommet from its position in the chamber 9.
  • a needle 15 and head 17 collectively known as a needle assembly are shown fitted to the syringe barrel 5.
  • the head 17 is held in place by the retaining clip 7 and cannot move upwards or downwards.
  • the clip 7 also makes a gas and fluid seal between the head 17 and the inside of the syringe barrel 5 such that movement of the plunger 1 upwards will fill the barrel 5 with gas or fluid drawn in through the hollow needle 15 and in through the port 8 and a downwards movement of the plunger 1 will eject gas or fluid out through port 8 and the hollow needle 15.
  • FIG 4 a syringe assembly is shown where fluid has been drawn into the syringe barrel 19 by an upwards movement of the plunger 1 this has caused fluid to be drawn in through the hollow needle 15 into the head of the assembly 17 and out into the barrel 19 via the port 8.
  • the plunger 1 has been moved to its most forward position, this has dispensed all the contents of the barrel 5 out through the needle 15.
  • the needle assembly head 17 is pushed into the chamber 2 of the grommet 3, it also displaces the grommet 3 from its anchorage in the chamber 9.

Abstract

La présente invention concerne un ensemble de piston, d'attache et d'aiguille qui peut être installé sur un cylindre de seringue conventionnel de façon à permettre que l'ensemble d'aiguille se rétracte automatiquement après utilisation dans un compartiment de sécurité située dans le piston, de manière à empêcher la réutilisation de la seringue et les blessures par piqûre d'aiguille. Le retrait de l'ensemble d'aiguille est réalisé au moyen de parties mobiles minimales selon une conception simple et ne nécessite aucune formation de l'utilisateur, la création de la force de retrait est totalement intuitive.
PCT/GB2015/051387 2015-01-20 2015-05-12 Seringue avec aiguille rétractable dans le piston par vide WO2016116726A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1500961.6 2015-01-20
GBGB1500961.6A GB201500961D0 (en) 2015-01-20 2015-01-20 Plunger, clip and needle assembly fitted to conventional syringe barrel rendering fully automatic retractable needle safety syringe

Publications (1)

Publication Number Publication Date
WO2016116726A1 true WO2016116726A1 (fr) 2016-07-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2015/051387 WO2016116726A1 (fr) 2015-01-20 2015-05-12 Seringue avec aiguille rétractable dans le piston par vide

Country Status (2)

Country Link
GB (1) GB201500961D0 (fr)
WO (1) WO2016116726A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5000736A (en) * 1990-03-22 1991-03-19 Harry Kaufhold, Jr. Disposable syringe with automatic needle retraction
US20040087907A1 (en) * 2002-11-01 2004-05-06 Smith Martin E. Disposable safety syringe
US20040106903A1 (en) * 2002-12-02 2004-06-03 Ming-Jeng Shue Intravenous catheter inserting device
EP1442763A1 (fr) * 2003-01-28 2004-08-04 Chung-Yu Yang Seringue de sécurité avec aiguille rétractable avec dépression
US20070066936A1 (en) * 2005-09-21 2007-03-22 Globe Medical Tech, Inc. Automatic retractable safety syringe
US20070250004A1 (en) * 2004-07-08 2007-10-25 Chung-Hao Tung Safe syringe with automatically retractable needle
WO2010006380A1 (fr) * 2008-07-17 2010-01-21 Medigard Limited Seringue rétractable
WO2012151330A1 (fr) * 2011-05-02 2012-11-08 Strategic Product Development, Inc. Seringue de sûreté rétractable actionnée sous vide

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5000736A (en) * 1990-03-22 1991-03-19 Harry Kaufhold, Jr. Disposable syringe with automatic needle retraction
US20040087907A1 (en) * 2002-11-01 2004-05-06 Smith Martin E. Disposable safety syringe
US20040106903A1 (en) * 2002-12-02 2004-06-03 Ming-Jeng Shue Intravenous catheter inserting device
EP1442763A1 (fr) * 2003-01-28 2004-08-04 Chung-Yu Yang Seringue de sécurité avec aiguille rétractable avec dépression
US20070250004A1 (en) * 2004-07-08 2007-10-25 Chung-Hao Tung Safe syringe with automatically retractable needle
US20070066936A1 (en) * 2005-09-21 2007-03-22 Globe Medical Tech, Inc. Automatic retractable safety syringe
WO2010006380A1 (fr) * 2008-07-17 2010-01-21 Medigard Limited Seringue rétractable
WO2012151330A1 (fr) * 2011-05-02 2012-11-08 Strategic Product Development, Inc. Seringue de sûreté rétractable actionnée sous vide

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