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WO2016009165A1 - Seringue - Google Patents

Seringue Download PDF

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Publication number
WO2016009165A1
WO2016009165A1 PCT/GB2014/053192 GB2014053192W WO2016009165A1 WO 2016009165 A1 WO2016009165 A1 WO 2016009165A1 GB 2014053192 W GB2014053192 W GB 2014053192W WO 2016009165 A1 WO2016009165 A1 WO 2016009165A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
compartment
safety
syringe according
needle assembly
Prior art date
Application number
PCT/GB2014/053192
Other languages
English (en)
Inventor
Ebrahim Karolia
Martin John HEYWOOD
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 WO2016009165A1 publication Critical patent/WO2016009165A1/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
    • A61M5/3205—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    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston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
    • A61M5/3205—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
    • A61M5/3205—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
    • A61M2005/3227—Constructional features thereof, e.g. to improve manipulation or functioning the needle being retracted laterally outside the syringe barrel, e.g. with separate guideway
    • 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
    • A61M5/3205—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 needle and assembly are retracted into a separate storage chamber, specifically not the syringe fluid chamber and not the fluid 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 the creation of a vacuum and/or applying torsion to a spring or elastic material during the normal operation of the syringe.
  • a syringe of this general type is sometimes referred to as a "retractable syringe"; what is meant by this term is that the needle retracts within the body of the syringe.
  • U.S. Patent No. 5,334,155 discloses a needle guard comprising an evacuated double walled protective sheath.
  • 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.
  • the protective safety device shown in U.S. Patent No. 5,188,614 (Hart, 23 February 1993) 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.
  • a further disadvantage of this device is 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.
  • 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.
  • 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 user's hand. 6. Once the needle has been retracted, a reliable safety device should prevent the needle from becoming once again exposed.
  • the syringe should be economically designed to give easier use and thus less suffering to the patient.
  • a syringe comprising a barrel and a needle assembly, the barrel comprising a fluid compartment and a safety compartment, the fluid compartment being operable to store fluid for dispensing from the syringe and the safety compartment being operable to store the needle assembly after use of the syringe.
  • the present invention proposes a syringe fitted with a conventional fluid compartment and separate safety compartment, after use the whole needle assembly will be drawn into the safety compartment such that the needle cannot prick anybody and the syringe cannot be re-used.
  • the fluid compartment and the safety compartment are distinct and separate, preferably the fluid compartment and the safety compartment are laterally displaced from one another, preferably the two compartments are arranged side by side,
  • the safety compartment is sized so as to completely house the needle arrangement, suitably without any needle protrusion from the compartment.
  • the safety compartment is sized to accommodate any needle size that may be used within the needle arrangement.
  • the fluid compartment comprises a fluid plunger operable to draw fluid into the fluid compartment and to dispense fluid from the fluid compartment.
  • the safety compartment comprises a safety plunger operable to create a retracting force within the safety compartment, preferably the retracting force is created between the safety plunger and the needle assembly
  • the retracting force is provided by a vacuum and/or elastic tension and suitably said force acts on the needle assembly.
  • the retracting force is provided by elastic tension
  • the elastic tension is created by any means capable of elastically deformable movement, for example a spring, or rubber member.
  • the safety plunger is operable to be moved from a first downward position to a second upward position, wherein in the first position no retracting force is present in the safety compartment, and wherein in the second position a maximum retracting force is present in the safety compartment and acting on the needle assembly.
  • the fluid plunger is also operable to be moved between a first downward position and a second upward position, wherein in the first position the fluid compartment is empty and in the second position the fluid compartment is full.
  • the fluid in the fluid compartment may be a gas and/or liquid, preferably the fluid is a liquid, more preferably a liquid for providing relief from and/or treatment and/or diagnosis of a disease.
  • the syringe may be provided with the fluid compartment pre-filled, and suitably with the fluid plunger thereby in the second upward position ready for use.
  • a user may actuate the fluid plunger from the first position to the second position to draw fluid into the fluid compartment via the needle assembly.
  • the user suitably actuates the fluid plunger from the second upward position to the first downward position to dispense fluid from the syringe via the needle assembly.
  • the safety plunger can only be moved from the first downward position to the second upward position.
  • the safety plunger and the fluid plunger are moveable from the first downward position to the second upward position together, preferably the plungers are moved together by a connecting plate.
  • the connecting plate allows the upward and downward movement of the fluid plunger between the first and second positions, but only allows the upward movement of the safety plunger therewith.
  • the connecting plate therefore allows the fluid plunger to move independently of the safety plunger in downward movement.
  • the connecting plate comprises an aperture that allows engagement of both plungers in upward movement, and disengagement of the safety plunger in downward movement.
  • the safety plunger is held at the second upward position by a ratchet as it is moved upwards, Preferably, therefore, the safety plunger is restricted to upward movement, whilst the fluid plunger is capable of upward and downward movement as in a traditional syringe.
  • the safety plunger is simultaneously drawn upwards to create the retracting force within the safety compartment.
  • the safety plunger is then held at the second upward position and maintains the retracting force within the safety compartment as fluid is dispensed from the syringe by depression of the fluid plunger down to the first position.
  • the syringe further comprises a release mechanism operable to release the needle assembly into the safety compartment for storage therein, suitably for storage therein after use of the syringe.
  • the release mechanism comprises a retaining clip and an actuating bar.
  • the release mechanism is contained within a central portion of the syringe, the central portion preferably being located between the fluid compartment and the safety compartment. More preferably the actuating bar is located within a groove in the central portion of the syringe and the retaining clip is located at the base of said groove.
  • the actuating bar is operable to be moved by the connecting plate, preferably the actuating bar is slideably retained in the groove, and moved therein by the connecting plate.
  • the actuating bar is operable to be moved between a first downward position and a second upward position together with the fluid plunger, preferably via the connecting plate.
  • the actuating bar engages with the retaining clip and in the second upward position the actuating bar disengages the retaining clip.
  • the retaining clip is in turn disengaged with the needle assembly, and in the second upward position the retaining clip is engaged with the needle assembly.
  • the actuating bar is disengaged from the retaining clip and the retaining clip is engaged with the needle assembly to thereby retain the needle assembly outside of the safety compartment.
  • the actuating bar is engaged with the retaining clip and the retaining clip is disengaged from the needle assembly to thereby release the needle assembly into the safety compartment.
  • the needle assembly is held outside the safety compartment and exposed by the retaining clip.
  • the actuating bar engages with the retaining clip and releases the needle assembly, which is then drawn into the safety compartment by the retracting force thereon such that the needle assembly is no longer exposed.
  • the needle assembly comprises a head and a needle, preferably the head is operable to fit within the syringe, more preferably within the safety compartment of the syringe.
  • the needle assembly is operable to be clipped into the syringe, preferably the safety compartment, by engagement with the retaining clip.
  • the head of the needle assembly comprises one or more protrusions.
  • the protrusions are annular.
  • the protrusions extend from the head at least at two points, to form a channel.
  • the channel is annular.
  • the channel is operable to engage the retaining clip, more preferably the channel and protrusions either side thereof allow the retaining clip to grip the needle assembly.
  • the one or more protrusions form a seal against the inside walls of the safety compartment, thereby maintaining the vacuum within the safety compartment.
  • the protrusions are formed from a sealing material, such as for example a rubber or plastic material.
  • the needle assembly may comprise an elastic member attached to the top of the head thereof and connecting the needle assembly to the underside of the safety plunger.
  • the needle assembly further comprises a port for allowing fluid to be drawn into and dispensed from the fluid compartment and out through the needle.
  • the assembly port is located substantially through the head and is in fluid communication with the fluid compartment and the needle, specifically the needle aperture.
  • the fluid compartment comprises a corresponding fluid port.
  • the fluid port is positioned at the base of the fluid compartment, and extends through the centre portion into the safety compartment, preferably the fluid port aligns substantially with the assembly port in the head of the needle assembly.
  • a fluid path from the fluid compartment, into the head of the needle and out of the needle is established.
  • the fluid port and the assembly port are aligned and located within the channel of the head of the needle assembly, and between the protrusions thereof.
  • the protrusions form a sealed channel therebetween in which the fluid is transported from the fluid compartment to the needle without the fluid exiting the head of the needle assembly.
  • the needle assembly helps to maintain the retracting force within the safety compartment and acts to isolate the fluid communication from the fluid compartment to the needle to minimise contamination.
  • the retaining clip and needle assembly allows simple installation of the needle assembly by pushing the syringe onto the head of the needle assembly.
  • the needle assembly is loaded into the base of the safety compartment for retraction therein after use, suitably therefore the needle assembly is laterally displaced from the fluid compartment, yet suitably in fluid communication therewith via the assembly port and the fluid port.
  • the syringe may further comprise a cap for positioning over the safety compartment after the needle assembly has been retracted.
  • a needle assembly for use with the syringe according to the first aspect.
  • kits for administering a fluid to a user comprising:
  • One or more needle assemblies as defined in relation to the second aspect Preferably the user is a patient.
  • the fluid is a medicament, as defined hereinabove.
  • the kit may comprise various needle assemblies of different gauges and shapes for different applications.
  • 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 and second aspects.
  • Figure 1 shows one embodiment of a syringe prior to fitting the needle assembly
  • Figure 2 shows one embodiment of a syringe with the needle assembly fitted and the fluid chamber full and ready to be dispensed;
  • Figure 3 shows one embodiment of a syringe with the fluid dispensed and the needle assembly safely withdrawn into the safety storage chamber
  • Figure 4 shows front, side, top and bottom views of one embodiment of a typical arrangement of the fluid chamber and safety storage chamber;
  • Figure 5 Shows an exploded view of one embodiment of a typical arrangement of the syringe assembly components;
  • Figure 6 Shows a detailed 3D style view of one embodiment of a needle and the complete needle assembly.
  • a syringe assembly is shown prior to fitting the needle assembly
  • a fluid plunger 6 is shown prior to use attached to an externally fitted slider plate 10.
  • the fluid chamber 2 is conventional but the filling/dispensing hole or port 18 is arranged at the bottom to one side.
  • the safety storage chamber 4 has the safety plunger 8 in a forward position and this is also attached to the external slider plate 10.
  • the safety plunger 8 is shown with no spring or elastic material attached but in some arrangements a spring or elastic material may be attached.
  • the ratchet system 16 that only allows upwards movement of the safety plunger 8 is shown as is the needle assembly retaining clip 12, the clip is shown ready to receive the needle assembly as it is protruding into the safety chamber 4.
  • the slider 10, has a bar with a chamfered tip that in the position shown in Figure 1 just contacts the top of the retaining clip 12.
  • the needle assembly 14 has been fitted and is held in position by the retaining clip 12 which is located into the groove 28 of the needle assembly.
  • the chamfered edges of the vacuum seals 22 push the corresponding chamfer on the retaining clip 12 thus allowing the needle assembly 14 to push the retaining clip 12 out of the way during fitting the assembly 14 into the safety storage chamber 4.
  • the groove 28 has parallel square edges that do not allow the clip 12 to be moved irrespective of whether the assembly 14 is pulled or pushed. Thus when the clip 12 is located in the groove 28 the assembly 14 cannot be moved upwards or downwards.
  • the slider 10 is shown in the upwards position and has caused the fluid plunger 6 to move upwards drawing fluid in through the needle assembly 14 via the assembly port/hole 26 and the filling/dispensing hole or port 18.
  • the assembly port/hole 26 is shown as a hole made on one side of the assembly 14 and located directly opposite the filling/dispensing hole or port 18, this is for ease of drawing only.
  • the port/hole 26 can be in any orientation and fluid can still pass in both directions during filling and dispensing because of the groove around the assembly created between the two seals 24. Also in some designs the port/hole 26 is made right through the assembly 14 and this is shown more specifically in Figure 6.
  • the movement of slider 10 has also caused the safety plunger 8 to move upwards forming a vacuum in the safety chamber 4, the double seals 22 on the needle assembly prevent the loss of vacuum.
  • the movement of slider 10 upwards may torsion a spring or elastic material attached to the top of the assembly 14 and the safety plunger 8. It should be noted that air bubbles in the fluid chamber 2 are easily cleared by inverting the syringe and pushing the slider 10, towards the needle, the ratchet 16 prevents the safety plunger from moving thus holding the vacuum created as shown in this arrangement Figure 2.
  • the torsion or tension is also maintained by the ratchet system 16 that prevents loss of torsion or tension even though the slider is moved downwards.
  • the design of the slider 10 means it can push or pull the fluid plunger 6 but only pull the safety plunger 8.
  • the seals 24 prevent fluid escaping into the safety chamber 4 or past the clip 12 or outside the main body of the device.
  • the fluid has all been dispensed and the fluid plunger 6 has been pushed by means of the slider 10 to the bottom of the fluid chamber 2 dispensing all the fluid out of the hole/port 18.
  • FIG 5 the exploded view of the components used in this particular syringe assembly are shown for clarity.
  • the slider plate 10 is shown and the means of attaching the fluid plunger 6 and the safety vacuum plunger 8 is shown more graphically.
  • the holes 20 in the top cover plate are shown that allow air to pass in or out to prevent pressure build up during operation of the syringe are shown more clearly.
  • the needle assembly 14 is shown in a 3D view to more clearly show the arrangement of the two vacuum retaining seals 22, the retaining clip housing 28 and the fluid filling and dispensing port 26 with the associated seals 24 that prevent fluid escaping when it is being drawn in or dispensed.
  • the fluid filling and dispensing port 26 is shown as a hole right through the body of the needle assembly Attention is drawn to any accompanying documents, including the priority document, filed with or in relation to the present application which documents are hereby incorporated by reference.

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)

Abstract

L'invention concerne une seringue de sécurité conçue pour empêcher une piqûre d'aiguille accidentelle après l'utilisation, l'ensemble aiguille étant automatiquement rétracté après utilisation dans un compartiment de sécurité rattaché latéralement . La rétraction de l'ensemble aiguille est mise en oeuvre à partir d'un nombre minimal de pièces mobiles selon une conception simple. Dans certains modes de réalisation, un vide est utilisé pour rétracter l'ensemble d'aiguille dans d'autres modes de réalisation, un matériau élastique ou ressort est utilisé.
PCT/GB2014/053192 2014-07-15 2014-10-27 Seringue WO2016009165A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1412531.4A GB2528269A (en) 2014-07-15 2014-07-15 Single use safety syringe with automatic retractable needle
GB1412531.4 2014-07-15

Publications (1)

Publication Number Publication Date
WO2016009165A1 true WO2016009165A1 (fr) 2016-01-21

Family

ID=51454142

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2014/053192 WO2016009165A1 (fr) 2014-07-15 2014-10-27 Seringue

Country Status (2)

Country Link
GB (1) GB2528269A (fr)
WO (1) WO2016009165A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020061100A1 (fr) * 2018-09-17 2020-03-26 Rx Bandz, Llc Dispositif portatif d'administration de médicament miniaturisé

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111721178A (zh) * 2020-06-02 2020-09-29 国机智能科技有限公司 一种注射器检具

Citations (7)

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EP0479303A1 (fr) * 1990-10-05 1992-04-08 Amorino Morandini Accessoire monté sur seringues pour permettre la retraction d'aiguille
US5188614A (en) 1991-04-04 1993-02-23 Prac-Tech-Cal Hypodermic syringe needle containment assembly
US5334155A (en) 1993-04-06 1994-08-02 Daniel Sobel Hypodermic syringe needle guard
US6193695B1 (en) 2000-01-14 2001-02-27 Wayland J. Rippstein, Jr. Disposable safety syringe having a retractable needle
US6413236B1 (en) 1999-10-08 2002-07-02 Lewis R. Van Dyke Automatically retractable needle safety syringe
US20120022464A1 (en) * 2010-07-22 2012-01-26 Becton, Dickinson And Company Dual Chamber Passive Retraction Needle Syringe
US20120078225A1 (en) * 2010-07-22 2012-03-29 Becton, Dickinson And Company Dual Chamber Syringe With Retractable Needle

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FR2739563B1 (fr) * 1995-10-06 1998-01-02 Calomili Gerard Seringue de securite a usage unique, dont la canule d'aiguille se retracte automatiquement et entierement apres le premier usage
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GB2528269A (en) 2016-01-20

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