EP3866888A1 - Dispositif d'injection passif a mise en securite automatique - Google Patents
Dispositif d'injection passif a mise en securite automatiqueInfo
- Publication number
- EP3866888A1 EP3866888A1 EP19784091.1A EP19784091A EP3866888A1 EP 3866888 A1 EP3866888 A1 EP 3866888A1 EP 19784091 A EP19784091 A EP 19784091A EP 3866888 A1 EP3866888 A1 EP 3866888A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- injection device
- injection
- cap
- distal
- proximal
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000002347 injection Methods 0.000 title claims abstract description 139
- 239000007924 injection Substances 0.000 title claims abstract description 139
- 239000000853 adhesive Substances 0.000 claims abstract description 18
- 230000001070 adhesive effect Effects 0.000 claims abstract description 18
- 230000009471 action Effects 0.000 claims abstract description 6
- 230000004913 activation Effects 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims description 2
- 210000002105 tongue Anatomy 0.000 description 11
- 230000007246 mechanism Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 210000003811 finger Anatomy 0.000 description 4
- 208000032843 Hemorrhage Diseases 0.000 description 2
- 208000034158 bleeding Diseases 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- NOESYZHRGYRDHS-UHFFFAOYSA-N insulin Chemical compound N1C(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(NC(=O)CN)C(C)CC)CSSCC(C(NC(CO)C(=O)NC(CC(C)C)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CCC(N)=O)C(=O)NC(CC(C)C)C(=O)NC(CCC(O)=O)C(=O)NC(CC(N)=O)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CSSCC(NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2C=CC(O)=CC=2)NC(=O)C(CC(C)C)NC(=O)C(C)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2NC=NC=2)NC(=O)C(CO)NC(=O)CNC2=O)C(=O)NCC(=O)NC(CCC(O)=O)C(=O)NC(CCCNC(N)=N)C(=O)NCC(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC(O)=CC=3)C(=O)NC(C(C)O)C(=O)N3C(CCC3)C(=O)NC(CCCCN)C(=O)NC(C)C(O)=O)C(=O)NC(CC(N)=O)C(O)=O)=O)NC(=O)C(C(C)CC)NC(=O)C(CO)NC(=O)C(C(C)O)NC(=O)C1CSSCC2NC(=O)C(CC(C)C)NC(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CC(N)=O)NC(=O)C(NC(=O)C(N)CC=1C=CC=CC=1)C(C)C)CC1=CN=CN1 NOESYZHRGYRDHS-UHFFFAOYSA-N 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 208000034656 Contusions Diseases 0.000 description 1
- 102000004877 Insulin Human genes 0.000 description 1
- 108090001061 Insulin Proteins 0.000 description 1
- 235000015429 Mirabilis expansa Nutrition 0.000 description 1
- 244000294411 Mirabilis expansa Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000002354 daily effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229940125396 insulin Drugs 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000013536 miso Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3287—Accessories for bringing the needle into the body; Automatic needle insertion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/28—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle
- A61M5/281—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle using emptying means to expel or eject media, e.g. pistons, deformation of the ampoule, or telescoping of the ampoule
- A61M5/283—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle using emptying means to expel or eject media, e.g. pistons, deformation of the ampoule, or telescoping of the ampoule by telescoping of ampoules or carpules with the syringe body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31501—Means for blocking or restricting the movement of the rod or 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
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
-
- 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
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
- A61M5/31576—Constructional features or modes of drive mechanisms for piston rods
- A61M5/31578—Constructional features or modes of drive mechanisms for piston rods based on axial translation, i.e. components directly operatively associated and axially moved with plunger rod
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/02—Holding devices, e.g. on the body
- A61M2025/0266—Holding devices, e.g. on the body using pads, patches, tapes or the like
Definitions
- the present invention relates to a passive safety injection device for enabling an increased stability of its positioning during injection 0t Uno MISO ⁇ n prot0Ction to131 ⁇ 0t autorna11pu ⁇ its aiguill0 d0 ⁇ d ⁇ injoction before laying the bone AP f inj0ction
- Such a safety device is said to be passive because on the one hand its operation is entirely independent of the way in which the user operates to carry out the injection and on the other hand the latter cannot carry out operations or errors that would prevent it from starting, for example not going after an injection before withdrawing the needle.
- total protection of the needle is meant that the needle can be kept in an aseptic or sterile environment without contact with the outside until it is implanted at the injection site.
- Such a passive safety injection device can be applied to all injection devices and in particular to conventional syringes with a smooth piston rod activated in translation. It can also be applied to screw injection devices, with a threaded piston rod activated in rotation.
- the rotational injection takes up a usual gesture performed daily in everyday life, which can be performed without precise positioning with different fingers, even with the hand. This rotation avoids the impression of introducing something into his body and drastically reduces the pressure on the skin.
- This gesture is performed with a fixed support which stabilizes the device and the needle, is not sensitive to pressure and is naturally performed at constant speed. In this stable holding position, breaks based on perception are easy to achieve.
- the object of the present invention is to propose a means of stabilizing the distal part of an injector device which comes into contact with the skin of a patient to be treated, such stabilization favoring the use of an injection device. by rotation of a control member.
- a stabilization means is also advantageous for the implementation of any other injection device, in particular by translation.
- the present invention also aims to provide an injection device by rotation requiring to implement it with only one hand of the user.
- injection devices which are provided with mechanisms making it possible, once the injection operation has ended, to retract the injection needle inside the body of the device. , thus avoiding any risk of accidental puncture to the user.
- injection devices of this type which, most of the time, use spring mechanisms, prove to be of great complexity which generally results in high cost prices.
- document WO 2015/048791 discloses an injection device able to optionally have adhesive means on its distal part which make it possible to stabilize it on the skin of a patient.
- such a device does not have passive means making it possible to automatically protect the syringe throughout the injection phase and after it.
- the object of the present invention is to propose a safety injection device which is simple and consequently easier and less expensive to produce and which, moreover, does not present the risk of injuring the patient during the injection.
- the present invention thus relates to an injection device of the type comprising a cylindrical body containing a reservoir containing a product to be injected, which is slidably mounted in the body, which open at one end on an injection needle and which is closed at its other end by a piston mounted movable in translation in the reservoir under the action of a piston rod provided with a control member, the surface of the distal end of the body being coated with adhesive means capable of ensuring maintaining this surface on the skin of a patient, characterized in that it comprises means for securing the needle, the activation of which is ensured by the adhesive means when a withdrawal force is exerted on the injection device.
- the control member may consist of a cylindrical cap which will be slidably mounted on the body, the piston rod being secured by its proximal end to the bottom of this cap and passing through an element mounted to move in translation in the cap.
- This movable element may consist of a nut into which the piston rod will be screwed or of a drawer in which the piston rod will be slidably mounted.
- the proximal end of the reservoir may be secured to said element and may include at least one deformable tongue which will extend towards the bottom of the cap and will end in a radial boss extended by a bevel.
- the distal face of the element may include a circular groove of a shape complementary to that of the bevel of the deformable tongue so as to receive the latter when the element is applied against the proximal face of the body and to deform it. towards the longitudinal axis of the latter.
- the internal face of the cap may include a first proximal circular stop whose distal face will be perpendicular to the axis of the body, and a second distal circular stop of rectangular section perpendicular to the axis of the body.
- the height of the circular stops may be such that, when the element is applied against the proximal face of the body, the deformation of the tongue will allow the passage of the radial boss to the right of the latter during a displacement of the cap relative to the body.
- This height of the circular stops may be such that, when the element is not applied against the face proximal to the body, the tongue will be released and its radial boss will abut against the distal face of the proximal circular abutment and abut against the proximal face of the distal circular abutment when the cap is moved relative to the body.
- the distal surface of the body coated with adhesive means may be protected by a removable membrane.
- the present invention also relates to an injection device of the type comprising a cylindrical body containing a reservoir containing a product to be injected, which is open at one end on an injection needle and is closed at its other end by a mounted piston movable in translation in the reservoir under the action of a control member, characterized in that the surface of the distal end of the body is extended by a boss.
- This boss may be of planar shape and substantially perpendicular to the longitudinal axis of the body or be of convex shape.
- FIG. 1 is a view in axial and longitudinal section of an embodiment of an injection device according to the invention shown in the rest or pre-injection position,
- FIG. 1a is an enlarged view of zone A of the injection device as shown in FIG. 1,
- FIG. 2 is a perspective view of the injection device shown in FIG. 1 before the injection phase
- FIG. 3 is a view in axial and longitudinal section of the injection device of FIG. 1 shown during injection
- Figure 3a is an enlarged view of area B of the injection device as shown in Figure 3
- Figure 4 is an axial and longitudinal sectional view of the injection device of Figures 1 and 3 shown once injection finished
- Figure 5 is an axial and longitudinal sectional view of the injection device of Figures 1 to 4 shown after injection once put in the safety position.
- FIG. 5a is an enlarged view of zone C of the injection device as shown in FIG. 5.
- FIG. 10 is an alternative embodiment of the injection device according to the invention.
- FIGS. 1 to 5 show an embodiment of an injection device according to the invention of the type in which the injection is carried out by means of rotation.
- This injection device 1 comprises a tubular body 3 which is hollowed out by an axial cylindrical conduit 5 which opens into a cylindrical distal chamber 7 of larger diameter.
- the conduit 5 receives a reservoir, constituted in this embodiment, by a syringe 9 containing the product to be injected which ends in an injection needle 11.
- the distal end of the syringe 9 is provided with a seal sealing ring 12 which is embedded in a bowl 10 of the body 3, and the length a of chamber 7 is such that, in the rest position, or pre injection, as shown in FIG. 1, the injection needle 11 is housed inside the chamber
- the proximal end 3b of the body 3 ends in two diametrically opposite hooking tabs 14 which themselves end in an external boss 14a of height H followed by a bevel 14b, these tabs being made deformable by the presence of an internal space 15.
- a piston 16 is slidably mounted inside the syringe 9 under the action of a threaded piston rod 17.
- the internal face of the cap 19 comprises a first circular distal stop 26 of height h, of rectangular section, intended to keep the body 3 blocked in the cap 19 during the withdrawal of the needle from the body 4 once the administration of the product has ended.
- the internal face of the cap also includes a second circular proximal stop 25 of height h, the proximal face 25a is preferably inclined and the distal face 25b is radial, and spaced from the first stop 25 by a distance equal to the width of the boss 14a, and which is intended, as explained below, to prevent a second exit of the needle 11 once the injection phase is complete.
- a cylindrical nut 21, of thickness e _ ⁇ _ forming a stopper is screwed onto the piston rod 17 and comprises a cup 20 in which the proximal end of the syringe 9 is fixed.
- the periphery of the distal face of the nut 21 is hollowed out by a circular groove 23 of shape complementary to that of the bevel 14b of the deformable tongues 14.
- This distal face 3a of the cylindrical body 3 can be formed by the annular surface of the body 3 or, as in the embodiment shown in FIG. 2, include an extension part 3c which is flat and perpendicular to the longitudinal axis xx 'of the injection device, making it possible to increase the size of this surface.
- the latter is coated with an adhesive capable of allowing adhesion with the skin 4 of the patient to be treated, this adhesive being protected in the non-use position, by a film or a film 27.
- the extension part 3c can be non-planar and in particular be convex in shape as shown in FIG. 10.
- the deformation of the surface of the skin by sinking will better adapt to the whole of the sticky surface, better adhere to it and better fix the device to its injection site.
- a simple movement perpendicular to the surface of the skin around the needle will make it possible to withdraw the injection device, thus avoiding pendulum movements which are likely to move the needle in the body.
- This perpendicular withdrawal will also facilitate the detachment of this adhesive surface: the skin located more on the periphery of said sticky surface will peel first and thus gradually to the part closest to the needle.
- This non-planar sticky surface which will prevent detachment of the entire surface at the same time after injection makes it possible to increase the bonding force without its removal being difficult or painful.
- This upward and progressive movement of the skin at the time of withdrawal of the needle also avoids the usual bleeding at the injection site linked to a phenomenon of suction of the needle in the opening which it made in the tissues. By pulling the skin back when withdrawing said needle, this sticky surface system compensates for this suction phenomenon and ensures that the opening closes without causing a resurgence of blood.
- the adhesive surface has two functions.
- a first function is to stabilize the injection device by relative to the patient's skin so as to prevent slipping during the injection phase.
- a second function is to control the activation of a mechanism for securing the injection device when the user exerts on it a pulling force intended to remove it of the patient's body, which makes this automatic locking, and this without the user having any additional action whatsoever to perform.
- the user After removing the protective film 27, the user brings the adhesive distal end of the injection device into contact with the area of the patient's body, where he wishes to perform the injection. Consequently, this end of the injection device, due to its adhesion with the injection zone, is stabilized.
- the user exerts a linear thrust on the cap 19 in the direction of the arrow F until the nut 21 abuts with the proximal face 3b of the body 3, which has the first effect of bring out the injection needle 11 from the injection device and introduce it into the patient's body 4, as shown in FIG. 3.
- the bevels 14b tongues 14 penetrate into the groove 23 of the nut 21, which has the effect of deforming the tongues 14 inwards and ensuring a rotational connection of the nut 21 with the body 3.
- these are released and able not to block the movement of the cap when, during injection, they will reach the level of the circular stops 25 and 26.
- the injection device is therefore ready to inject the treatment product.
- the user rotates the cap 19, which he can moreover do with one hand due to the connection existing between the distal part 3a of the body 3 with the patient's body 4 which is ensured by the adhesive product.
- the piston rod 17 is screwed into the nut 21, and the latter being immobilized in rotation relative to the body 3, the piston 16 moves in the syringe 9 and administers the treatment product in the patient's body until the plunger reaches the neck of the syringe 9, as shown in Figure 4, or the user stops his inj ection.
- the user pulls on the cap 19 in the opposite direction to the arrow F.
- the distal face 3a of the latter being held in adhesion with the patient's skin, the nut 21 is brought back so that the tabs 14 are then released and return to their initial position.
- this arrangement makes it possible to trigger the means capable of securing the injection device in safety by a withdrawal movement of the latter, in contrast to the prior devices in which the safety is obtained by a movement. pressure on the patient's body which occurs in an area close to the injection site. We know that this kind of pressure is likely to cause the risk of bleeding or bruising.
- the user removes the distal face of the injection device from the surface of the patient's skin by blocking the body 3 relative to the cap 19 against the second distal stop 26.
- the present example is described with regard to a small volume syringe, in particular of the insulin type, it can be adapted to any other device using syringes or cartridges, standard or not, than this. either according to an injection mode controlled by rotation as described in this example or according to injection modes controlled in translation with conventional syringes using smooth plunger rods and finger rests.
- the cap 19 could be replaced by two arms also integral with the piston rod. These two arms could circulate in two windows inside the finger rest.
- the implantation of the needle would be done by exerting a push of these two arms in the direction of arrow F.
- the safety means implemented in the present injection device also have the advantage of being able to replace the cap which usually covers the injection needle. This eliminates an operation of removing the cap which is dangerous because it exposes the user to the cutting bevel, that moreover it can damage the injection needle and that finally it involves risks of external contamination of this needle before its inj ection.
- the body 3 may include a window 28 which will extend along the syringe and which will make it possible to check its content before use.
- a label can connect the body 3 to the cap 19 so as to ensure the relative maintenance of these two parts before injection.
- a label will also allow vé2G1f10 before use the integrity of the sealing of the injection device.
- This label may include a precut line promoting its rupture during the injection.
- the passive injection device with automatic safety device is not limited to the mechanisms described above and could be applied to any other type of mechanism in which the function of triggering of the safety means would be ensured by bonding its distal part to the patient's skin.
- This injection device has the following essential differences with the previous device.
- a piston rod 17 ' which consists of a smooth non-threaded rod which is slidably mounted in an axial bore of a drawer 2' with a level of friction fj.
- the drawer 21 ' is mounted in turn movable in translation in the cap 19 with the lowest possible level of friction f 0 .
- This drawer has at its proximal end a circular groove 23 of the same type as that of the nut 21 of the previous example.
- the user brings the adhesive distal end of the injection device into contact with the area of the patient's body, where he wishes to perform the 'injection. Consequently, this end of the injection device, due to its adhesion with the injection zone, is stabilized.
- the translational movement exerted on the cap 19 has the first effect of bringing the injection needle 11 out of the injection device and introducing it into the patient's body 4, as shown in the Figure 7.
- the bevels 14b of the tongues 14 penetrate into the groove 23 of the drawer 21 ', which has the effect of deforming the tongues 14 inwards as well as was in the previous example.
- the injection device is therefore ready to inject the treatment product.
- the user continues his axial movement in the direction of the arrow F so that the piston 16 moves in the syringe 9 and administers the treatment product into the patient's body until the piston reaches the neck of the syringe 9, as shown in Figure 8, or that the user stops his inj ection.
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1859566A FR3087129B1 (fr) | 2018-10-16 | 2018-10-16 | Dispositif d'injection de securite passif |
PCT/EP2019/077993 WO2020079012A1 (fr) | 2018-10-16 | 2019-10-15 | Dispositif d'injection passif a mise en securite automatique |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3866888A1 true EP3866888A1 (fr) | 2021-08-25 |
Family
ID=66286377
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19784091.1A Pending EP3866888A1 (fr) | 2018-10-16 | 2019-10-15 | Dispositif d'injection passif a mise en securite automatique |
Country Status (6)
Country | Link |
---|---|
US (1) | US20210393889A1 (fr) |
EP (1) | EP3866888A1 (fr) |
AU (1) | AU2019362327B2 (fr) |
CA (1) | CA3116027A1 (fr) |
FR (1) | FR3087129B1 (fr) |
WO (1) | WO2020079012A1 (fr) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3709783C1 (de) * | 1987-03-25 | 1988-04-14 | Blendax Werke Schneider Co | Dosierspritze |
US6808507B2 (en) * | 2002-05-10 | 2004-10-26 | Cambridge Biostability Ltd. | Safety injectors |
WO2004032989A2 (fr) * | 2002-07-08 | 2004-04-22 | Medical Instill Technologies, Inc. | Dispositif d'administration intradermique fixe de maniere adhesive a la peau, et procede d'administration intradermique |
US6884224B2 (en) * | 2003-04-04 | 2005-04-26 | Norfolk Medical | Needle protection device |
WO2007071485A1 (fr) * | 2005-12-20 | 2007-06-28 | Novo Nordisk A/S | Appareil de rétention cutanée pour une unité médicale d’injection sans aiguille |
EP3199190B1 (fr) * | 2013-09-30 | 2019-12-04 | Medimop Medical Projects Ltd. | Stylo injecteur stabilisé |
-
2018
- 2018-10-16 FR FR1859566A patent/FR3087129B1/fr active Active
-
2019
- 2019-10-15 CA CA3116027A patent/CA3116027A1/fr active Pending
- 2019-10-15 WO PCT/EP2019/077993 patent/WO2020079012A1/fr unknown
- 2019-10-15 US US17/285,656 patent/US20210393889A1/en active Pending
- 2019-10-15 EP EP19784091.1A patent/EP3866888A1/fr active Pending
- 2019-10-15 AU AU2019362327A patent/AU2019362327B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
AU2019362327A1 (en) | 2021-05-20 |
CA3116027A1 (fr) | 2020-04-23 |
FR3087129B1 (fr) | 2023-05-12 |
US20210393889A1 (en) | 2021-12-23 |
AU2019362327B2 (en) | 2024-11-07 |
WO2020079012A1 (fr) | 2020-04-23 |
FR3087129A1 (fr) | 2020-04-17 |
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