WO2012072083A1 - Dispositif d'aiguille de sécurité - Google Patents

Dispositif d'aiguille de sécurité Download PDF

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Publication number
WO2012072083A1
WO2012072083A1 PCT/DK2011/050454 DK2011050454W WO2012072083A1 WO 2012072083 A1 WO2012072083 A1 WO 2012072083A1 DK 2011050454 W DK2011050454 W DK 2011050454W WO 2012072083 A1 WO2012072083 A1 WO 2012072083A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
needle device
guide means
control part
shield
Prior art date
Application number
PCT/DK2011/050454
Other languages
English (en)
Inventor
Bue Fridolin Ross Agner
Original Assignee
Hvidovre Hospital
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 Hvidovre Hospital filed Critical Hvidovre Hospital
Publication of WO2012072083A1 publication Critical patent/WO2012072083A1/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
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3257—Semi-automatic sleeve extension, i.e. in which triggering of the sleeve extension requires a deliberate action by the user, e.g. manual release of spring-biased extension means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150015—Source of blood
    • A61B5/15003—Source of blood for venous or arterial blood
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
    • A61B5/150259—Improved gripping, e.g. with high friction pattern or projections on the housing surface or an ergonometric shape
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150381—Design of piercing elements
    • A61B5/150389—Hollow piercing elements, e.g. canulas, needles, for piercing the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150381—Design of piercing elements
    • A61B5/150503—Single-ended needles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
    • A61B5/150572—Pierceable protectors, e.g. shields, caps, sleeves or films, e.g. for hygienic purposes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
    • A61B5/150633—Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves
    • A61B5/150641—Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves comprising means to impede repositioning of protection sleeve from covering to uncovering position
    • A61B5/150656—Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves comprising means to impede repositioning of protection sleeve from covering to uncovering position semi-automatically triggered, i.e. in which the triggering of the protective sleeve requires a deliberate action by the user, e.g. manual release of spring-biased extension means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
    • A61B5/150694—Procedure for removing protection means at the time of piercing
    • A61B5/150717—Procedure for removing protection means at the time of piercing manually removed
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/15074—Needle sets comprising wings, e.g. butterfly type, for ease of handling
    • 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
    • A61M5/3202—Devices for protection of the needle before use, e.g. caps
    • 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
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/3247—Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
    • 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
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body

Definitions

  • the present invention relates to safety needle devices for use e.g. for blood sample collection, and in particular to needle devices in which the needle is shielded before and after use.
  • the needles are typically covered e.g. by a cap before use, but this does not remove the risk of injuries during and especially after use.
  • an improved needle device would be advantageous, and in particular a safety needle device with which the risk of needle stick injuries is minimised compared to known devices would be advantageous.
  • the shield part or the rear part being an actuation part comprising first guide means
  • control part comprising second guide means, the control part being arranged at least partially inside the actuation part and adapted to move between a first and a second position while the second guide means moves along the first guide means,
  • the rotational connection between the shield part and the rear part could e.g. be obtained by the two parts having corresponding geometries, such as having engaging grooves as will be shown in relation to the figures.
  • the connection could also be threaded, if the thread was long enough to ensure that the rear and the shield part were not separated by the intended rotation during use.
  • the rotational connection could comprise a connection part engaging both the rear part and the shield part. I.e. so that the two latter do not necessarily need to be directly connected to be covered by the scope of the present invention as long as the desired functioning of the needle device is obtained.
  • the rear part and the shield part are fixed against mutual translatory movement. In other embodiments, they can move relative to each other, preferably in combination with the rotational movement. This may e.g. be via a threaded connection.
  • the rotation may be 90-180°, such as 95-110°, such as substantially 100°.
  • the rotation should preferably be so small that it can be performed without the user removing his/her hands from the needle device. Hereby an easier and thus safer handling is ensured which lowers the risk of needle stick injuries also before injection into the patient.
  • the choice of the actual angle will be part of the design process for a needle device for a given application. It will relate to the dimensions, the mechanical properties of the materials used and the expected forces to be applied during rotation. An appropriate design can e.g. be determined by computer simulations in combination with user tests of prototypes.
  • subsequent rotation of the actuation part around the longitudinal axis may cause the control part to move from its second position to its first position while causing the needle holder to move from its second position to its first position under influence from energy released from the spring.
  • the needle can easily be covered after use so that risk of needle stick injuries is minimised.
  • the actuation part is preferably located at some distance from the needle tip, the retraction of the needle can be obtained without touching the needle device close to the exposed needle tip.
  • the subsequent rotation of the actuation part may be in a second direction being opposite to the first direction.
  • the subsequent rotation of the actuation part may be in the same direction as the first direction. This may necessitate a longer first guide means, but an advantage is that the device may be easier to use, since the actuation part is always to be rotated in the same direction. This is especially the case for embodiments where the control device can be moved to a third position as will be described below.
  • the actuation part may be provided with one or more protruding parts adapted to be manually actuated to facilitate the rotation of the actuation part.
  • the protruding parts are two wing-shaped profiles arranged on opposite sides of the actuation part. During use of the device, these protruding parts are gripped by the fingers of the user to facilitate the rotational movement. A possible embodiment will be shown in the figures.
  • the first guide means may comprise at least one incision adapted to receive and releasably lock the second guide means in the second position.
  • the needle holder is mechanically held in a stable position and prevented from moving during insertion of the needle into the patient.
  • a needle device according to present invention wherein subsequent rotation of the actuation part around the longitudinal axis cause the control part to move from its second to its first position as described above may be designed so that an initial part of the subsequent rotation of the actuation part results in the second guide means being released from the second position.
  • the remainder of the rotation can be actuated by the energy released by the spring. This results in a fast and semi-automatic movement and thereby a lower risk of needle stick injuries.
  • the first guide means may be adapted to allow the control part to be moved to a third position which is further away from the second position than the first position of the control part is, so that the control part is locked in its third position.
  • the needle device is un-intentionally reused.
  • Such re-use would comprise a serious risk of infection.
  • the movement of the control part to the third position may be manually actuated either as a continuous movements from the second to the third position or via a temporary stop in the first position.
  • a continuous movement may also be driven or assisted by release of the energy stored in the spring.
  • the actuation part may comprise at least one safety pin
  • the control part may comprise at least one safety notch adapted to engage with the safety pin, so that when the safety pin engage the safety notch, the control part is locked in its third position.
  • the hollow needle may be in fluid communication with a tube connectable to a receptacle.
  • a needle device can be used for blood sample collection.
  • the present invention relates to use of a needle device as described above for blood collection.
  • the needle device could be used for injection, such as for intravenous, intramuscular or subcutaneous injection.
  • Figure 1 shows schematically a needle device according to the present invention before or after use, i.e. with the needle covered by the shield part.
  • Figure l.a shows a front view and figure l.b shows a side view.
  • Figure 2 shows schematically the needle device in figure 1 when ready for use, i.e. with the needle un-covered by the shield part.
  • Figure 2. a shows a front view and figure 2.b shows a side view.
  • Figure 3 shows the hollow needle mounted on the needle holder.
  • Figure 4. a and figure 4.b show front and side views, respectively, of the shield part.
  • Figure 5. a and figure 5.b show front and side views, respectively, of the rear part.
  • Figure 6. a, figure 6.b and figure 6.c show three different views of the control part.
  • Figure 6.c is a top view in relation to figure 6.b.
  • Figure 7 shows schematically how the control part is moved inside the rear part when the latter is rotated.
  • Figure 8 shows schematically the use of the needle device.
  • Figure 9 shows schematically an alternative embodiment of the control part comprising a safety notch.
  • Figure 10 shows schematically a part of a needle device which can be locked after use to prevent re-use of the needle device. The device is shown before the rear part is moved into the locked position.
  • Figure 11 shows schematically the part of the needle device as in figure 10 but with the rear part moved into the locked position.
  • Figure 12 shows schematically an alternative design of a needle device according to the present invention.
  • Figure 13 shows schemativally two examples of first guide means in needle devices.
  • the actuation part is rotated in two opposite directions, and in figure 13.
  • the actuation part is rotated in the same direction for the first and subsequent rotation.
  • Figure 1 shows schematically a needle device 1 according to the present invention before or after use, i.e. with the needle 2 covered by the shield part 3.
  • Figure l.a shows a front view and figure l.b shows a side view.
  • Figure 2 shows schematically the needle device 1 in figure 1 when ready for use, i.e. with the tip of the needle 2 un-covered by the shield part 3.
  • Figure 2. a shows a front view and figure 2.b shows a side view.
  • the components of the needle device 1 are illustrated as being transparent to ease the understanding of how they move inside each other. In practise they need not be transparent.
  • the needle device 1 comprises a number of components which, except for the spring 4, are shown individually in figures 3-6 as that may give a better interpretation of the device.
  • the main components are:
  • control part 8 arranged inside the rear part 6.
  • either the rear part 6 or the shield part 3 can be the actuation part, i.e. the part to be actuated during use of the needle device 1.
  • the rear part 6 is the actuation part, but a corresponding needle design could be made where the control part 8 is arranged inside the shield part 3, and where the shield part 3 is the one being actuated during use. It is considered to be obvious to a skilled person how such a design should differ from the one shown in the figures. E.g. the needle holder 5 would be shorter than the one shown in the figures.
  • the needle holder 5 can move between a first position and a second position, such that the needle 2 is fully covered by the shield part 3 in the first position, as shown in figure 1, and exposed and ready for insertion into a patient in the second position, as shown in figure 2.
  • the rear part 6 comprises first guide means 9, and the control part 8 comprises second guide means 10; see figure 6.
  • the control part 6 is arranged inside the rear part 6 and adapted to move between a first and a second position inside the rear part 6 while the second guide means 10 moves along the first guide means 9. Rotation of the rear part 6 in a first direction with respect to the shield part 3 cause the control part 8 to move from its first to its second position while causing the needle holder 5 to move from its first to its second position.
  • the spring 4 is compressed so that elastic energy is stored therein.
  • the rotation is substantially 90°, but other angles of rotation are also covered by the scope of the present invention.
  • an object of the invention is to provide a needle device 1 with which the risk of needle stick injuries is minimised compared to known devices, the necessary handling should preferably be so that it can be performed with as little movement of a user's fingers as possible.
  • the rear part 6 and the shield part 3 are fixed against mutual translatory movement.
  • Figure 3 shows the hollow needle 2 mounted on the needle holder 5.
  • the needle holder 5 is e.g. a plastic tube through which the needle 2 extends.
  • the needle is typically made from surgical steel.
  • the illustrated embodiment is for blood sample collection.
  • the needle 2 is in fluid communication with a tube 11 leading the blood to a receptacle (not shown) for collecting the blood.
  • a tube 11 having a length as shown in the figures
  • the blood could be collected in a receptacle (not shown) placed behind the needle device 1 during collection. If the needle device 1 is used for injection of medicaments, the needle 2 can be fluidly connected to a receptacle containing the medicament from where it can be pumped into the patient.
  • Figure 4. a and figure 4.b show front and side views, respectively, of the shield part 3.
  • Figure 5. a and figure 5.b show front and side views, respectively, of the rear part 6.
  • the shield part 3 and the rear part 6 are rotationally connected via end parts that engage and allow rotational, mutual movement only. This could e.g. be corresponding grooves.
  • the connection could also be threaded, if the thread was long enough to ensure that the parts 3,6 were not separated by the intended rotation during use.
  • Such a threaded connection could e.g. be used to disassemble the parts 3,6 after use if desired. This could e.g. be relevant if it was desired to re-use part of the device.
  • both the shield part 3 and the rear part 6 are provided with protruding parts 12 adapted to be manually actuated to facilitate the rotation of the rear part 6.
  • the protruding parts 12 are wing-shaped profiles arranged on opposite sides of the shield part 3 and the rear part 6. During use of the needle device 1, these protruding parts 12 are gripped by the fingers of the user to facilitate the rotational movement as well as a safe holding of the needle device 1 during use.
  • the rear part 6 comprises first guide means 9, and the control part 8 comprises second guide means 10 which first and second guide means 9,10 are adapted to engage with each other so that when the rear part 6 is rotated, the control part 8 is moved towards the first end 7 of the rear part 6.
  • Figure 6. a, figure 6.b and figure 6.c show three different views of the control part 8.
  • Figure 6.c is a top view in relation to figure 6.b.
  • the second guide means 10 of the control part 8 are in the form of small projections having a shape matching the first guide means 9. The actual design can be determined e.g. by computer simulations to obtain a desired relation between rotational and linear motion.
  • Figure 7 shows schematically how the control part 8 is moved inside the rear part 6 when the latter is rotated.
  • the first guide means 9 comprise incisions 13 at the end closest to the first end 7 of the rear part 6; these incisions 13 may e.g. be V-shaped.
  • the second guide means 10 of the control part 8 slide into these incisions 13 whereby the mutual position of the parts 6,8 become releasably locked.
  • the needle 2 can now be safely inserted into the patient.
  • the locked position is released by subsequent rotation of the rear part 6 with respect to the shield part 3. This rotation can be in the same direction as the first direction or in a second direction being opposite to the first direction.
  • the second control means 10 are hereby moved away from the incisions 13 which cause the control part 8 to move from its second position to its first position thereby causing the needle holder 5 to move from its second position to its first position under influence from energy released from the spring 4.
  • the rear part 6 comprises
  • Figure 8 shows schematically the use of the needle device 1.
  • figure 8.b shows how rotation of the rear part 6 results in forward movement of the needle holder 5 and the needle 2
  • figure 8.c shows the needle 2 injected into a vein 14
  • figure 8.d shows how rotation of the rear part 6 in the opposite direction results in the needle 2 being retracted to a shielded position under influence of the spring 4.
  • the needle 2 is retracted from the vein 14 while the needle holder 5 is held onto the skin of the patient; the skin being illustrated schematically by the vein 14 in the figures.
  • the needle 2 can be retracted by manual, linear movement of the whole needle device 1 away from the vein 14 where after the needle 2 can be retracted into the shield part 3 by rotating the rear part 6 as described above.
  • the rear part 6 and the control part 8 are designed so that un-intended re-use of the needle device 1 can be prevented.
  • This can e.g. be obtained by the first guide means 9 being designed so as to allow the control part 8 to be moved to a third position which is further away from the first end 7 of the rear part 6 than the first position of the control part 8 and to be locked in this third position.
  • This means that the rotation in the second direction is through a larger angle than the rotation in the first direction.
  • Locking of the control part 8 in the third position can be obtained by the rear part 6 comprising at least one safety pin 15 arranged at or adjacent to the first guide means 9 and the control part 8 comprising at least one safety notch 16 adapted to engage with the safety pin 15 so that when the safety pin 15 engages with the safety notch 16, the control part 8 is locked in its third position.
  • a possible design of a control part 8 comprising a safety notch 16 is shown in figure 9.
  • Figure 10 shows schematically the part of a needle device 1 which can be locked after use to prevent re-use thereof. The needle device 1 is shown before the control part 8 is moved into the locked position.
  • the needle device 1 may comprise a safety pin 15 at each second guide means 10 which should thus have a safety notch 16 each, or there may be only one safety pin 15 or safety notch 16.
  • Figure 11 shows schematically the part of the needle device as in figure 10 but with the rear part moved into the locked position from which it cannot be moved again.
  • the safety pin 15 is designed so that it abuts the second guide means 10 of the control part 8 in such a way that the control part 8 does not slide into the third, locked position before use of the needle device 1. After use, the manual rotation of the rear part 6 towards the third position cause temporary elastic deformation of the safety pin 15 so that it can be moved into the safety notch 16.
  • the shield part 3, rear part 6 and control part 8 are typically made from hard plastic and manufactured by injection moulding. They can e.g. be made from any sutiable material that can be sterilised. The parts may be made from the same or different materials. The materials are preferably chosen so that the needle device 1 can be sterilised before use.
  • figure 12 shows schematically an alternative design of a needle device 1 according to the present invention.
  • the first guide means 9 is a slot
  • the second guide means 10 is a projection sliding along the slot.
  • Figure 13 shows schemativally two examples of first guide means in needle devices.
  • the examples relate to the design in figure 12, where the first and second guide means 9,10 are shaped as a slot and a protrusion, respectively.
  • Figure 13. a show a first guide means 9 for use in a design where the actuation part is rotated in two opposite directions, and in figure 13. b show first guide means 9 for use in a design where the actuation part is rotated in the same direction for the first and subsequent rotation.
  • the first, second and third positions are marked with the respective numbers encircled.
  • a temporary membrane (not shown) can be arranged to cover the front of the shield part 3, so that this membrane is perforated when the needle 2 is moved out of the shield part 3.
  • the present invention has been described in connection with the specified embodiments, it should not be construed as being in any way limited to the presented examples.
  • the device has been shown with two pairs of guide means. However, it may also be possible to have e.g. one or three pairs. This is also the case for the wing-shaped protrusions.

Abstract

La présente invention concerne un dispositif d'aiguille (1) comprenant une aiguille creuse (2) montée sur un support d'aiguille (5) et un élément de protection (3) à l'intérieur duquel le support d'aiguille peut se déplacer entre une première position et une seconde position, de telle façon que, dans la première position, l'aiguille est entièrement recouverte par l'élément de protection, tandis que dans la seconde position elle est exposée et prête à être insérée dans le corps d'un patient. Ledit dispositif d'aiguille comprend en outre un ressort (4) disposé à l'intérieur de l'élément de protection entre le support d'aiguille et l'élément de protection. Une partie arrière (6) du dispositif d'aiguille est reliée rotative à l'élément de protection, de telle façon que la partie arrière et l'élément de protection peuvent tourner l'un par rapport à l'autre. La rotation de l'élément de protection (3) ou de la partie arrière (6) amène le support d'aiguille à se déplacer de sa première à sa seconde position et à comprimer le ressort de manière à y emmagasiner de l'énergie élastique.
PCT/DK2011/050454 2010-11-29 2011-11-28 Dispositif d'aiguille de sécurité WO2012072083A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP10192925 2010-11-29
EP10192925.5 2010-11-29

Publications (1)

Publication Number Publication Date
WO2012072083A1 true WO2012072083A1 (fr) 2012-06-07

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PCT/DK2011/050454 WO2012072083A1 (fr) 2010-11-29 2011-11-28 Dispositif d'aiguille de sécurité

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WO (1) WO2012072083A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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WO1998042393A1 (fr) * 1997-03-26 1998-10-01 Bio-Plexus, Inc. Dispositif de transfert de liquide parenteral
US6033141A (en) * 1996-09-27 2000-03-07 Nottingham-Spirk Design Associates, Inc. Capless retractable sealed marking instruments
US6162197A (en) * 1998-12-22 2000-12-19 Mohammad; Owais Retractable needle assembly and method of making the same
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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4737150A (en) * 1985-05-10 1988-04-12 Intermedicat Gmbh Two-cannula syringe
US6033141A (en) * 1996-09-27 2000-03-07 Nottingham-Spirk Design Associates, Inc. Capless retractable sealed marking instruments
WO1998042393A1 (fr) * 1997-03-26 1998-10-01 Bio-Plexus, Inc. Dispositif de transfert de liquide parenteral
US20010014792A1 (en) * 1998-09-28 2001-08-16 Robert E. West Pen needle magazine
US6162197A (en) * 1998-12-22 2000-12-19 Mohammad; Owais Retractable needle assembly and method of making the same

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