WO2003070303A2 - Dispositif d'insertion d'aiguille comprenant un element de retenue mobile transversalement - Google Patents

Dispositif d'insertion d'aiguille comprenant un element de retenue mobile transversalement Download PDF

Info

Publication number
WO2003070303A2
WO2003070303A2 PCT/CH2003/000041 CH0300041W WO03070303A2 WO 2003070303 A2 WO2003070303 A2 WO 2003070303A2 CH 0300041 W CH0300041 W CH 0300041W WO 03070303 A2 WO03070303 A2 WO 03070303A2
Authority
WO
WIPO (PCT)
Prior art keywords
holding
sleeve
needle
cross
insertion device
Prior art date
Application number
PCT/CH2003/000041
Other languages
German (de)
English (en)
Other versions
WO2003070303A8 (fr
WO2003070303A3 (fr
Inventor
Beat Steffen
Stefan Jost
Rainer Ponzer
Markus Tschirren
Original Assignee
Tecpharma Licensing Ag
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 Tecpharma Licensing Ag filed Critical Tecpharma Licensing Ag
Priority to AU2003201258A priority Critical patent/AU2003201258A1/en
Publication of WO2003070303A2 publication Critical patent/WO2003070303A2/fr
Publication of WO2003070303A3 publication Critical patent/WO2003070303A3/fr
Publication of WO2003070303A8 publication Critical patent/WO2003070303A8/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
    • A61M5/3287—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
    • A61M5/31—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
    • A61M5/326—Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user
    • A61M2005/3261—Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user triggered by radial deflection of the anchoring parts between sleeve and syringe barrel, e.g. spreading of sleeve retaining hooks having slanted surfaces by engagement with conically shaped collet of the piston rod during the last portion of the injection stroke of the plunger
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3243—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

Definitions

  • Needle insertion device with a transversely movable holding element
  • the invention relates to a needle insertion device for a device for dispensing an injectable product.
  • the device is preferably an injection device.
  • the needle insertion device is used for insertion, i.e. the insertion of a needle into a tissue.
  • the preferred application is administration to humans, particularly preferably subcutaneous or intramuscular administration. The delivery of the product to animals or plant tissue should not be excluded.
  • Needle insertion devices are known, for example, from US Pat. No. 5,282,793 and US Pat. No. 5,980,491.
  • a delivery device for example a simple syringe or an injection pen, is inserted into the sleeve-shaped insertion device.
  • the dispenser protrudes through an inner holding sleeve, which holds the dispenser axially immovable.
  • the injection needle of the dispenser protrudes beyond a front end of the holding sleeve.
  • the holding sleeve is received and guided so that it can move axially back and forth in an outer sleeve.
  • the outer sleeve In an initial position of the insertion device, the outer sleeve surrounds the injection needle up to at least its tip and at least over part of its circumference. In this position, the outer sleeve and the holding sleeve are blocked relative to each other.
  • a compression spring is arranged between the two sleeves and is tensioned in the locked position of the sleeves. If the blockage is released and the compression spring is thereby triggered, it presses the holding sleeve in a forward direction relative to the outer sleeve, so that the injection needle is advanced beyond the foremost end of the outer sleeve in order to penetrate a tissue.
  • the delivery device In the insertion device of US Pat. No. 5,980,491, the delivery device is screwed into the holding sleeve.
  • the handling of the insertion devices is not optimal with regard to the triggering of the advancing movement of the holding sleeve and delivery device during the needle insertion.
  • the dispenser should be easily separable from the needle insertion device.
  • the invention relates to a needle insertion device for a device for dispensing an injectable product.
  • the delivery device can in particular be an injection device, for example a simple syringe or, more preferably, a so-called injection pen.
  • Injection pens are known from human medicine in many applications, for example from the administration of growth hormones and from diabetes therapy for the administration of insulin. Growth hormones and insulin are preferred examples of an injectable product.
  • the insertion device is particularly suitable for self-administration of injectable products, i.e. in uses where a user is self-administering the product. This type of product delivery is common in the administration of insulin and the administration of growth hormones, but also in other applications.
  • the needle insertion device comprises a needle protection sleeve and a holding sleeve which are mechanically connected to one another in such a way that the holding sleeve is relative to the needle protection sleeve along a common longitudinal axis Driving direction is movable.
  • the holding sleeve serves to receive the dispensing device and is shaped such that the dispensing device can be inserted into the holding sleeve and is held in the holding sleeve in a predetermined position relative to the holding sleeve.
  • the dispensing device can preferably be inserted into the holding sleeve along the longitudinal axis, the dispensing device preferably being inserted into the holding sleeve from behind, with the injection needle first.
  • the dispensing device is received and held in the holding sleeve in such a way that the injection needle protrudes over a front end of the holding sleeve in the direction of advance.
  • the holding sleeve has at least one holding element for holding the dispensing device.
  • the holding element can be a separate part that is axially non-movably connected to the holding sleeve. More preferably, however, the holding sleeve itself forms the at least one holding element directly in one piece.
  • the holding element is designed such that it holds the dispensing device in a releasable holding engagement in a predetermined axial position relative to the holding sleeve - and thereby also relative to the needle guard sleeve.
  • the holding engagement prevents an axial movement of the dispensing device relative to the holding sleeve against the direction of advance and preferably also in the direction of advance.
  • the holding sleeve can be moved along the longitudinal axis relative to the needle guard sleeve from a starting position to a front position and preferably from the front position to the starting position. In the starting position, a needle tip of the injection needle is behind a front end of the needle guard sleeve or at least does not protrude beyond the needle guard sleeve.
  • the needle protection sleeve preferably completely surrounds the injection needle and, apart from a front opening for the injection needle, preferably offers complete needle protection. In principle, however, it would also be conceivable that the needle guard sleeve partially surrounds the injection needle protruding from the front end of the dispensing device, as is described, for example, in US Pat. No. 5,980,491.
  • the holding element is movable transversely to the longitudinal axis in such a way that it is moved transversely to the longitudinal axis out of the holding engagement.
  • the movement takes place relative to the dispensing device if such is received and held in the holding sleeve.
  • this transverse movement takes place relative to the needle guard sleeve and preferably also relative to a section of the holding sleeve which extends in the longitudinal direction and serves to guide the holding sleeve through the needle guard sleeve.
  • the holding element can preferably be moved out of the holding engagement against an elastic restoring force.
  • the elastic restoring force can be obtained by applying a separate spring element to the holding element.
  • the holding element can also be a separate element from the holding sleeve, which is movably connected to the holding sleeve transversely to the longitudinal axis.
  • it can be, for example, simply a pin-shaped.
  • it can form a slide, which can preferably be pressed into the holding sleeve against an elastic restoring force, in order to release a holding engagement with the dispensing device based on positive locking and / or frictional locking. This can be achieved, for example, in that the slide engages around a dispensing device accommodated in the holding sleeve at least over part of its circumference.
  • the holding sleeve is elastically deformable in at least one holding sleeve section.
  • the elastic deformability is such that a compression of a hollow cross section of the holding sleeve along a first cross-sectional axis causes the holding element to move transversely to the longitudinal axis from the holding engagement.
  • the dispenser can be easily removed from the holding sleeve.
  • the holding sleeve only has to be pressed together with one hand and the delivery device removed with the other.
  • the holding engagement By releasing the holding engagement by means of a movement transverse to the longitudinal axis of the holding sleeve, the expenditure of force can be significantly reduced in comparison with a holding engagement which is carried out by a simple insertion movement in the longitudinal direction of the holding sleeve. It is also advantageous that such a holding intervention can be released, so to speak, at the push of a button.
  • the holding element preferably snaps automatically into the holding engagement transversely to the longitudinal axis. The dispensing device then only has to be inserted into the holding sleeve to produce the holding engagement.
  • the movement of the holding element for releasing and producing the holding engagement preferably takes place radially to a central longitudinal axis of the holding sleeve.
  • the direction of movement can also point in any other direction transverse to the central longitudinal axis.
  • the elastic hollow cross section has at least one cross-sectional segment which is elastically deformable transversely to the longitudinal axis and preferably extends only over part of the circumference of the hollow cross section. It can preferably be deformed along the first cross-sectional axis into the hollow cross-section, particularly preferably radially inwards.
  • the holding element extends the elastically deformable cross-sectional segment, preferably axially.
  • the holding sleeve forms an axis of rotation for an expanding movement of the holding element between the elastically deformable cross-sectional segment and the holding element. It preferably forms an intermediate section which projects inward beyond the elastically deformable cross-sectional segment. If the dispenser is in the holding sleeve is received, the intermediate section lies against the dispensing device on the outside or comes into contact through the compression, as a result of which the axis of rotation is obtained in this embodiment, about which the holding element can be spread outward from the holding engagement.
  • the holding element extends another cross-sectional segment of the hollow cross-section, which can be elastically deformable, but does not have to be deformable.
  • the compression of the hollow cross-section along the first cross-sectional axis causes the hollow cross-section to widen along another, second cross-sectional axis.
  • the first and second cross-sectional axes preferably point perpendicular to one another.
  • the other cross-sectional segment and the holding element are formed on the second cross-sectional axis.
  • the holding engagement can only be based on positive locking or only on positive locking or on a combination of positive locking and non-positive locking. This applies both to the prevention of a movement of the dispensing device relative to the holding sleeve in the direction of advance as well as against the direction of advance.
  • the holding element is designed as an elastically bendable snap tongue which projects axially.
  • a stop surface pointing in the direction of advance is formed on the catch tongue, with which the holding element snaps behind the rear end face of the dispensing device in the holding engagement and thereby hooks onto the dispensing device.
  • Such a locking engagement based on positive locking prevents movement of the dispensing device against the direction of advance.
  • the holding engagement preferably also prevents the dispensing device from being able to move in the direction of advance relative to the holding sleeve. Preventing movement in the The direction of advance is preferably based on a positive and non-positive connection in combination.
  • two holding elements are formed in a preferred embodiment, which lie opposite one another and are moved apart, preferably spread apart, for releasing the holding engagement, and are accordingly moved towards one another for producing the holding engagement. More than two holding elements can also be provided, which are preferably arranged uniformly distributed over the circumference of the holding sleeve. In the case of two or even more holding elements, the plurality of holding elements are preferably of identical design.
  • the holding sleeve is axially movably received in an outer sleeve and is preferably guided so as to be secured against rotation.
  • the outer sleeve preferably forms the needle guard sleeve directly. However, it can also be carried out separately from the needle guard and mechanically connected to the needle guard.
  • the outer sleeve is resilient in a sleeve section in order to be able to compress the elastically deformable hollow cross section of the holding sleeve along its first cross-sectional axis.
  • the formation of a resilient area in the outer sleeve is also advantageous in the case of a differently designed holding element, for example in the case of a separate holding element movably connected to the holding sleeve.
  • the outer sleeve is preferably too flexible in the radial direction in the direction of the central longitudinal axis of the holding sleeve.
  • the resilient portion can extend all the way around the circumference of the outer sleeve. However, it preferably extends over the circumference only over a limited angular range of at most 60 °. It is particularly advantageous if two such areas are arranged diametrically opposite one another. In this case, the elastically deformable hollow cross-section of the holding sleeve should also be elastically deformable on its two sides, which face the two flexible regions.
  • the needle insertion device can be an exclusively manually operated insertion device or, more preferably, an auto insertion device.
  • a drive device for an automatic advance of the holding sleeve from the starting position into the front position and also a triggering device for the drive device.
  • the drive device is preferably formed by a mechanical spring element, particularly preferably by a compression spring. Alternatively, however, it can also be based on the effect of a fluid pressure and, in this case, preferably be a pneumatically active drive device. If the insertion device can be used several times, the holding sleeve is preferably moved back against an elastic restoring force of the drive device from the front position into the starting position, so that the drive device exerts a force directed in the forward direction on the holding sleeve in the starting position.
  • the release device has a manually actuated release element, which is particularly preferably provided in a front half of the outer sleeve.
  • the release device can either release the drive device or, more preferably, block the holding sleeve relative to the outer sleeve.
  • an insertion device the holding sleeve of which has to be moved manually in the advancing direction, can also have such a triggering device, so that the explanations for the triggering device apply equally to auto-insertion devices and to manually operated insertion devices.
  • the arrangement according to the invention in the front half of the outer sleeve improves the ergonomics.
  • the insertion device can be handled more easily during needle insertion.
  • a release device is arranged in the rear half or even at the rear end of the outer sleeve, the positioning and holding of the insertion device and the simultaneous release require the use of both hands or a special skill with a one-handed design.
  • the insertion device can be securely positioned with one hand at the desired puncture site and the release device can be actuated with the same hand.
  • the positive connection is preferably a latching connection.
  • the triggering device comprises a first stop which is axially immovably connected to the needle guard sleeve and a second stop which is axially immovably connected to the holding sleeve. These at least two stops are in a blocking engagement against each other to stop in order to prevent the holding sleeve from advancing from the starting position. If the insertion device is an auto-insertion device, the drive device preferably presses the second stop connected to the holding sleeve in the advancing direction against the first stop.
  • At least one of the stops is formed on a snap tongue, which is elastically bendable transversely to the longitudinal axis of the holding sleeve and is bent against its elastic restoring force from the blocking engagement and automatically snaps into the blocking engagement due to the elastic restoring force.
  • the actuating element of the actuating device presses the latch tongue out of the blocking engagement when actuated.
  • claim 1 can only form the subject of such an application with the features a), b) and c) in combination with one of claims 15 to 18.
  • the invention relates both to a device comprising a delivery device and an insertion device and to an insertion device alone.
  • An insertion device according to the invention can in particular be based on Dispensing devices can be adapted for which an insertion device was not originally intended, ie it can be a retrofit device.
  • Figure 1 shows an auto-insertion device with a recorded
  • Figure 2 shows the auto-insertion device and the dispensing device of Figure 1 in a foremost position of the dispensing device
  • Figure 3 shows the auto-insertion device and the dispensing device in the position of Figure 2 in a longitudinal section rotated by 90 °
  • Figure 4 den Cross section AA of Figure 1 and
  • FIG. 1 shows an auto-insertion device and a delivery device 1 inserted into the insertion device in a longitudinal section.
  • the insertion device is formed by two sleeve bodies, namely a needle guard 5 and a holding sleeve 10/15, which is movably received and guided in the needle guard 5 along a common longitudinal axis L.
  • the needle guard sleeve 5 projects beyond the holding sleeve at both axial ends.
  • the holding sleeve 10/15 cannot be rotated relative to the needle guard sleeve 5 by the two sleeves 5 and 10/15 being axially linearly guided against one another via at least two guide surfaces extending in the direction of the longitudinal axis L.
  • the two guide surfaces can in particular be formed by a guide groove and an engaging guide rib, one of which is secured against rotation with the Needle protection sleeve 5 and the other secured against rotation is connected to the holding sleeve 10/15.
  • the holding sleeve 10/15 is formed by two separately manufactured sleeve bodies which are rigidly connected to one another, so that axial relative movements and rotary movements of the sleeve bodies relative to one another are not possible.
  • the two sleeve bodies are therefore understood below as the front sleeve section 10 and the rear sleeve section 15 of a single holding sleeve 10/15.
  • the needle guard sleeve 5 is also formed from several, separately manufactured parts.
  • An outer sleeve forms the main part of the needle guard sleeve 5.
  • the holding sleeve 10/15 is received in this outer sleeve and guided axially linear.
  • a base is attached to a front end of the outer sleeve and has a central through opening, but apart from the through opening closes the outer sleeve at its front end. Because of their firm connection, the outer sleeve and the base are understood below as a single needle guard sleeve 5. Furthermore, recesses are provided in a cylindrical, in the exemplary embodiment circular-cylindrical, central section of the needle guard sleeve 5, each of which is provided in the jacket of the needle guard sleeve 5 as a perforated jacket region, i.e. as a recess, are formed.
  • a release element 8, which is radially flexible with respect to the longitudinal axis L, is inserted into a front recess.
  • An element 9 which is radially flexible with respect to the longitudinal axis L is likewise inserted into two rear recesses, which are diametrically opposite one another.
  • the elements 8 and 9 are preferably resilient.
  • a compression spring 12 is arranged in an annular gap between the front holding sleeve section 10 and the needle guard sleeve 5.
  • a rear end of the compression spring 12 is supported on a radially inwardly projecting shoulder of the needle guard sleeve 5. With its front end, the compression spring 12 presses against a radially outwardly projecting shoulder of the front holding sleeve section 10. In the starting position of the holding sleeve 10/15, the compression spring 12 is tensioned and presses on the holding sleeve 10/15 with its elastic tensioning force along the longitudinal axis L in the direction of advance.
  • the holding sleeve 10/15 is blocked against movement in the direction of advance with the aid of a pair of stops in a blocking engagement comprising a first stop 7 and a second stop 11.
  • the needle guard sleeve 5 forms the first stop 7 directly in the form of an axial end face in its front recess.
  • the front holding sleeve section 10 has at its front end a catch 11 with a front, axial end face. This end face is the opposite end face to the first stop 7 and is therefore also referred to synonymously as the second stop 11.
  • the second stop or catch 11 is flexurally elastic transversely to the longitudinal axis L, in the exemplary embodiment radially to the longitudinal axis L, and can best be characterized as an axially extending catch tongue.
  • the catch 11 which forms the second stop
  • the front holding sleeve section 10 is provided with two axial slots 11 a from its front end face.
  • the snapper 11 remains between the two slots 11a.
  • the snapper tongue is thickened at its front end radially outward relative to the remaining lateral surface of the holding sleeve section 10 in order to obtain the counter-stop surface for the first stop 7 in the thickened region.
  • the thickened area of the snapper 11 is accommodated in the front recess of the needle guard sleeve 5. Radially above the catch 11, the front recess is closed by the flexible element 8. The resilient element 8 forms a trigger element. By radial pressure from the outside against the release element 8, the catch 11 is elastically bent inwards out of the blocking engagement with the first stop 7. If the catch 11 has been bent out of the blocking engagement, the holding sleeve 10/15 is pressed in by the pressure spring 12 Headed towards the bottom of the needle guard sleeve 5.
  • the dispensing device 1 is held by the holding sleeve 10/15 so that it cannot move axially, so that it is advanced together with the holding sleeve 10/15 relative to the needle guard 5 and pushes the needle 3 through the opening of the bottom of the needle guard 5.
  • the joint propulsion movement of the holding sleeve 10/15 and the dispensing device 1 is limited by an end stop 6, which is formed by the bottom of the needle guard sleeve 5.
  • the holding sleeve 10/15 is advanced to this end stop 6 and then assumes its front end position.
  • This front end position is shown in Figures 2 and 3 in two longitudinal sections rotated by 90 ° to each other.
  • the injection needle 3 protrudes from the needle guard sleeve 5 over its entire length.
  • the triggering device which is formed by the triggering element 8 and ultimately also by the two stops 7 and 11, is advantageously arranged in the front half of the needle guard sleeve 5. It has only a distance from the front end of the needle guard sleeve 5 which corresponds to the path length which the holding sleeve 10/15 and the dispensing device 1 are jointly driven for the purpose of needle insertion. Only the thickness of the bottom of the needle guard sleeve 5 and the half axial extent of the front recess are added to this distance if the distance is measured with respect to the center of the trigger element 8.
  • FIGS. 2 and 3 in connection with FIG. 5 also show in particular how the dispensing device 1 is axially fixed in the holding sleeve 10/15, that is to say is prevented from moving axially relative to the holding sleeve 10/15.
  • the rear holding sleeve section 15 has a hollow cross section which is stretched in its cross-sectional plane.
  • the hollow cross section is along the first Cross-sectional axis Qi is broader both along its clear inner diameter and in terms of its outer diameter than along the second cross-sectional axis Q 2 .
  • the hollow cross-section is oval.
  • the hollow cross section is divided into four cross-sectional segments, two of which are provided with the reference number 17 and two with the reference number 18.
  • the two cross-sectional segments 18 lie diametrically opposite one another on one side of the first cross-sectional axis Qi.
  • the cross-sectional segments 17 lie diametrically opposite one another on one side of the second cross-sectional axis Q 2 .
  • the two cross-sectional segments 17 and the two cross-sectional segments 18 form a hollow cross-section 17/18 that is symmetrical with respect to the first cross-sectional axis Qi and the second cross-sectional axis Q 2 .
  • the two cross-sectional segments 17 extend as far as the outer circumferential surface of the dispensing device 1. However, there is a free space between the cross-sectional segments 18 and the outer circumferential surface of the dispensing device 1, which extends in the circumferential direction up to the cross-sectional segments 17. Seen in the hollow cross section 17/18, each of the free spaces extends over an angle of approximately 120 °.
  • the hollow section 17/18 of the rear holding sleeve section 15 is elastically deformable into the free spaces.
  • the rear holding sleeve section 15 forms two holding elements 16, which are diametrically opposite one another with respect to the longitudinal axis L and can be seen in FIG. 3.
  • Each of the holding elements 16 extends axially one of the cross-sectional segments 18 and, in the exemplary embodiment, is formed in one piece with the cross-sectional segments 17 and 18.
  • the axial extension is such that the rear holding sleeve section 15 forms an intermediate section between the cross-sectional segments 18 and the holding elements 16, with which the rear holding sleeve section 15 lies against the outer jacket of the dispensing device 1 or is at most a small distance apart.
  • an axis of rotation is obtained for each holding element 16, about which the holding element 16 in question is at a Compressing the cross-sectional segments 18 is spread radially outwards by the dispensing device 1.
  • the holding elements 16 each form a snap hook with an axially facing, radially extending end face, which is obtained by the fact that the holding element 16 in question, seen from its rear end, initially thickens in a wedge shape radially inward to form at its thickest point to jump back radially outward face concerned.
  • the holding elements 16 On their front-facing end faces, the holding elements 16 hook onto a counter end face (FIG. 3) of the dispensing device 1, which counter face forms a holding engagement surface 4.
  • the holding engagement of the holding elements 16 prevents the dispensing device 1 from being able to move against the direction of advance relative to the holding sleeve 10/15.
  • the holding engagement is purely positive in this regard.
  • the wedge shape of the holding elements 16 also prevents the dispensing device 1 from being able to move out of the holding engagement in the advancing direction relative to the holding sleeve 10/15.
  • the holding engagement is positive and non-positive.
  • the dispensing device 1 is provided with corresponding counter surfaces to the wedge surfaces of the holding elements 16. As a result, the dispensing device 1 is fixed in a precisely predetermined axial position by the holding engagement on the holding sleeve 10/15.
  • the cross-sectional segments 18 are dimensionally elastic for the convenient release of the holding engagement.
  • the hollow cross section 17/18 formed by the cross-sectional segments 17 and 18 can also be shape-elastic overall. The elasticity is such that the hollow cross section 17/18 can be elastically narrowed along the first cross-sectional axis Qi.
  • the elasticity of the hollow cross-section 17/18 can be such that a narrowing of the hollow cross-section 17/18 along the first cross-sectional axis Qi causes an expansion of the hollow cross-section along the second cross-sectional axis Q 2 .
  • the holding elements 16 extend the cross-sectional segments 17 in this embodiment. By widening, the holding elements 16 are moved away from one another, so that the dispensing device 1 comes free from the front end faces of the holding elements 16 and is pulled out to the rear from the holding sleeve 10/15 and the needle guard sleeve 5 can be.
  • the rear holding sleeve section 15 in this embodiment is also not guided towards the dispensing device 1 in the extension of the cross-sectional segments 18 to the rear.
  • the free spaces are thus continuously formed towards the rear.
  • the holding sleeve 10/15 does not have any further differences in this alternative.
  • the two rear cutouts of the needle guard sleeve 5 on the first cross-sectional axis Qi are also left free.
  • the rear recesses are each closed by a flexible element 9.
  • the flexible elements 9 can also be referred to as pressure elements because of their function. Due to the axial linear guidance of the holding sleeve 10/15 on the needle guard sleeve 5, the positioning of the two cross-sectional segments 18 forming the free spaces is ensured radially under the respective flexible component 9.
  • the delivery device 1 is inserted with the injection needle 3 first from the rear along the longitudinal axis L inserted into the needle guard sleeve 5 and the holding sleeve 10/15 accommodated therein. Due to their wedge shape, the two holding elements 16 form a gradually narrowing inlet and, upon insertion, press elastically with a slight pressure against the outer lateral surface of the dispensing device 1. As soon as the dispensing device 1 with its end face 2a has passed the holding elements 16, the holding elements 16 jump due to their elastic clamping force radially inward into the position shown in Figure 3. At this moment, the holding engagement is established and the dispensing device 1 is axially fixed relative to the holding sleeve 10/15.
  • the holding sleeve 10/15 and the dispensing device 1 fixed by it now assume the starting position shown in FIG. 1 relative to the needle guard sleeve 5.
  • the holding sleeve 10/15 is prevented from moving forward along the longitudinal axis L by the interaction of the two stops 7 and 11.
  • the compression spring 12 is under tension.
  • the needle 3 is behind the bottom of the needle guard 5 and is surrounded by the needle guard 5 protective.
  • the needle guard sleeve 5 forms a needle shield, ie the user can see the injection needle 3 at most through the front opening in the bottom of the needle guard sleeve 5.
  • a needle guard sleeve is also understood to mean a component which only offers privacy protection but no needle contact protection.
  • the user grips the insertion device with one hand and places it vertically or at an angle on the skin with the bottom of the needle guard sleeve 5. It is assumed that a product dose to be administered with the delivery device 1 has already been selected. He then triggers the insertion device sitting on the skin by pressing the trigger element 8. The triggering can be carried out conveniently with a finger of the same hand with which the user holds and guides the insertion device.
  • the insertion device After the administration of the product, subcutaneously in the exemplary embodiment, the insertion device is lifted off the skin and the injection needle is thereby pulled out of the skin.
  • the cross-sectional segments 18 of the elastically deformable hollow cross section 17/18 of the holding sleeve 10/15 come to lie radially under the two pressure elements 9.
  • the holding engagement of the holding elements 16 can therefore be released by compressing the elastic hollow cross section 17/18 along the first cross-sectional axis Qi.
  • the two holding elements 16 are spread apart from the holding engagement and the dispensing device 1 can be removed from the insertion device if, for example, the product reservoir of the injection device 1 has already been completely emptied.

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

L'invention concerne un dispositif d'insertion d'aiguille destiné à un appareil (1) servant à administrer un produit injectable, cet appareil d'administration (1) comprenant un réservoir de produit et une aiguille pour piqûres (3) reliée au réservoir. Ce dispositif d'insertion d'aiguille comprend un manchon de protection d'aiguille (5), ainsi qu'un manchon de retenue (10/15) relié à ce manchon de protection d'aiguille (5) et mobile par rapport à celui-ci dans une direction d'avance le long d'un axe longitudinal (L) commun, l'appareil d'administration (1) pouvant être inséré dans ce manchon de retenue (10/15) de telle sorte que l'aiguille pour piqûres (3) soit en saillie par rapport audit manchon de retenue (10/15) dans la direction d'avance. Le manchon de retenue (10/15) comprend au moins un élément de retenue (16) qui peut être mis en prise, de façon déverrouillable, dans une position de blocage pour empêcher que l'appareil d'administration (1), une fois inséré, ne se déplace axialement par rapport au manchon de retenue (10/15). L'invention se caractérise en ce que ledit élément de retenue (16) peut être déplacé perpendiculairement à l'axe longitudinal (L) pour être mis en prise en position de blocage ou sorti de cette position.
PCT/CH2003/000041 2002-02-21 2003-01-21 Dispositif d'insertion d'aiguille comprenant un element de retenue mobile transversalement WO2003070303A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003201258A AU2003201258A1 (en) 2002-02-21 2003-01-21 Needle insertion device having a transversely moving retaining element

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002107276 DE10207276A1 (de) 2002-02-21 2002-02-21 Nadel-Insertionsvorrichtung mit quer bewegbarem Halteelement
DE10207276.0 2002-02-21

Publications (3)

Publication Number Publication Date
WO2003070303A2 true WO2003070303A2 (fr) 2003-08-28
WO2003070303A3 WO2003070303A3 (fr) 2003-10-16
WO2003070303A8 WO2003070303A8 (fr) 2004-01-08

Family

ID=27740274

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2003/000041 WO2003070303A2 (fr) 2002-02-21 2003-01-21 Dispositif d'insertion d'aiguille comprenant un element de retenue mobile transversalement

Country Status (3)

Country Link
AU (1) AU2003201258A1 (fr)
DE (1) DE10207276A1 (fr)
WO (1) WO2003070303A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9629958B2 (en) 2008-10-07 2017-04-25 Roche Diabetes Care, Inc. Insertion device

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2414406B (en) 2004-05-28 2009-03-18 Cilag Ag Int Injection device
GB2414403B (en) 2004-05-28 2009-01-07 Cilag Ag Int Injection device
GB2414399B (en) 2004-05-28 2008-12-31 Cilag Ag Int Injection device
GB2414402B (en) 2004-05-28 2009-04-22 Cilag Ag Int Injection device
GB2414400B (en) 2004-05-28 2009-01-14 Cilag Ag Int Injection device
GB2414775B (en) 2004-05-28 2008-05-21 Cilag Ag Int Releasable coupling and injection device
GB2414401B (en) 2004-05-28 2009-06-17 Cilag Ag Int Injection device
GB2414409B (en) 2004-05-28 2009-11-18 Cilag Ag Int Injection device
GB2427826B (en) 2005-04-06 2010-08-25 Cilag Ag Int Injection device comprising a locking mechanism associated with integrally formed biasing means
GB2425062B (en) 2005-04-06 2010-07-21 Cilag Ag Int Injection device
GB2424836B (en) 2005-04-06 2010-09-22 Cilag Ag Int Injection device (bayonet cap removal)
GB2424835B (en) 2005-04-06 2010-06-09 Cilag Ag Int Injection device (modified trigger)
GB2424838B (en) 2005-04-06 2011-02-23 Cilag Ag Int Injection device (adaptable drive)
ATE452670T1 (de) 2005-08-30 2010-01-15 Cilag Gmbh Int Nadelvorrichtung für eine vorgefüllte spritze
US20110098656A1 (en) 2005-09-27 2011-04-28 Burnell Rosie L Auto-injection device with needle protecting cap having outer and inner sleeves
GB2438591B (en) † 2006-06-01 2011-07-13 Cilag Gmbh Int Injection device
GB2438593B (en) 2006-06-01 2011-03-30 Cilag Gmbh Int Injection device (cap removal feature)
GB2438590B (en) 2006-06-01 2011-02-09 Cilag Gmbh Int Injection device
GB2461086B (en) 2008-06-19 2012-12-05 Cilag Gmbh Int Injection device
GB2461085B (en) 2008-06-19 2012-08-29 Cilag Gmbh Int Injection device
GB2461089B (en) 2008-06-19 2012-09-19 Cilag Gmbh Int Injection device
GB2461087B (en) 2008-06-19 2012-09-26 Cilag Gmbh Int Injection device
GB2461084B (en) 2008-06-19 2012-09-26 Cilag Gmbh Int Fluid transfer assembly
GB2515039B (en) 2013-06-11 2015-05-27 Cilag Gmbh Int Injection Device
GB2517896B (en) 2013-06-11 2015-07-08 Cilag Gmbh Int Injection device
GB2515032A (en) 2013-06-11 2014-12-17 Cilag Gmbh Int Guide for an injection device
GB2515038A (en) 2013-06-11 2014-12-17 Cilag Gmbh Int Injection device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1845036A (en) * 1930-03-12 1932-02-16 Herbert H Busher Hypodermic syringe
US2150738A (en) * 1937-10-29 1939-03-14 Leonld A Dunajeff Hypodermic syringe
US3605743A (en) * 1968-10-14 1971-09-20 Raul Olvera Arce Hypodermic syringe
US4787891A (en) * 1987-07-13 1988-11-29 Paul Levin Syringe holder and applicator
WO1993005834A1 (fr) * 1991-09-23 1993-04-01 Sterling Winthrop Inc. Assemblage de seringue de securite avec corps deformable radialement
US5282793A (en) * 1989-10-02 1994-02-01 Larson Eldon E Syringe holder and applicator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3880163A (en) * 1973-10-26 1975-04-29 Jack H Ritterskamp Medicinal syringe actuating device
US4639249A (en) * 1986-01-13 1987-01-27 Larson Eldon E Latch integral with latched apparatus
SE9102652D0 (sv) * 1991-09-13 1991-09-13 Kabi Pharmacia Ab Injection needle arrangement
US5634906A (en) * 1995-12-27 1997-06-03 Habley Medical Technology Corporation Needle hiding shield for a dose metering syringe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1845036A (en) * 1930-03-12 1932-02-16 Herbert H Busher Hypodermic syringe
US2150738A (en) * 1937-10-29 1939-03-14 Leonld A Dunajeff Hypodermic syringe
US3605743A (en) * 1968-10-14 1971-09-20 Raul Olvera Arce Hypodermic syringe
US4787891A (en) * 1987-07-13 1988-11-29 Paul Levin Syringe holder and applicator
US5282793A (en) * 1989-10-02 1994-02-01 Larson Eldon E Syringe holder and applicator
WO1993005834A1 (fr) * 1991-09-23 1993-04-01 Sterling Winthrop Inc. Assemblage de seringue de securite avec corps deformable radialement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9629958B2 (en) 2008-10-07 2017-04-25 Roche Diabetes Care, Inc. Insertion device
US10537357B2 (en) 2008-10-07 2020-01-21 Roche Diabetes Care, Inc. Insertion device

Also Published As

Publication number Publication date
DE10207276A1 (de) 2003-09-11
WO2003070303A8 (fr) 2004-01-08
WO2003070303A3 (fr) 2003-10-16
AU2003201258A1 (en) 2003-09-09

Similar Documents

Publication Publication Date Title
WO2003070303A2 (fr) Dispositif d'insertion d'aiguille comprenant un element de retenue mobile transversalement
EP1703929B1 (fr) Dispositif d'injection declenchable
EP3421067B1 (fr) Dispositif d'injection, notamment auto-injecteur comprenant une protection contre la piqûre involontaire et/ou une sécurité contre la surcharge, pour un réservoir à produit
DE60318936T2 (de) Nadelschutzvorrichtung für eine spritze sowie injektionsvorrichtung bestehend aus einer spritze und dieser schutzvorrichtung
DE102006042233B3 (de) Nadelschutzvorrichtung mit distalem und proximalem Nadelschutz
DE19821933C1 (de) Vorrichtung zur Verabreichung eines injizierbaren Produkts
EP2063937B1 (fr) Dispositif de protection d'aiguille présentant une position de protection bloquée
EP2323717B1 (fr) Dispositif d'injection automatique pour l'administration d'une dose fixe
DE69101112T2 (de) Wegwerfbare Injektionsspritze.
DE69013363T2 (de) Spritze mit sich automatisch zurückziehender nadel.
WO2002020074A1 (fr) Dispositif de protection d'aiguille
DE102007013837A1 (de) Federanordnung in einer Injektionsvorrichtung
EP1572271A1 (fr) Auto-injecteur presentant un systeme repositionnable empechant le declenchement de l'injection
EP2063939A1 (fr) Dispositif de protection d'aiguille à position de protection bloquée
WO2010136076A1 (fr) Dispositif d'injection comprenant un système destiné à séparer un capuchon de protection d'aiguille d'un réservoir à produit
DE10203597A1 (de) Injektionsgerät
DE10204836A1 (de) Nadelabdeckung und Kanülenträger mit Nadelabdeckung
WO2008113864A1 (fr) Dispositif d'injection à systèmes de sécurité anti-déclenchement
DE102005043805A1 (de) Zentrierhilfe zum Aufsetzen einer Nadel auf ein Injektionsgerät
DE102006041808B4 (de) Nadelschutzvorrichtung mit lösbar blockiertem Nadelschutz
DE60105834T2 (de) Spritzvorrichtung
EP2168533B1 (fr) Seringue, notamment pour applications médicales vétérinaires
WO2010085903A1 (fr) Dispositif d'administration comprenant un élément de maintien pour le réservoir à fluide
EP2173411A1 (fr) Dispositif de mise en place d'une canule
EP2905043B1 (fr) Module de liaison pour une seringue et seringue avec un tel module de liaison

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SK SL TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
CFP Corrected version of a pamphlet front page

Free format text: PUBLISHED FIGURE REPLACED BY CORRECT FIGURE

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP