EP3010434A1 - Dispositif de mélange et d'extraction avec une broche filetée - Google Patents

Dispositif de mélange et d'extraction avec une broche filetée

Info

Publication number
EP3010434A1
EP3010434A1 EP14726382.6A EP14726382A EP3010434A1 EP 3010434 A1 EP3010434 A1 EP 3010434A1 EP 14726382 A EP14726382 A EP 14726382A EP 3010434 A1 EP3010434 A1 EP 3010434A1
Authority
EP
European Patent Office
Prior art keywords
container
mixing rod
mixing
thread
counterpart
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.)
Withdrawn
Application number
EP14726382.6A
Other languages
German (de)
English (en)
Inventor
Andy Greter
Beat Mathys
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Medmix Systems AG
Original Assignee
Medmix Systems 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 Medmix Systems AG filed Critical Medmix Systems AG
Publication of EP3010434A1 publication Critical patent/EP3010434A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8802—Equipment for handling bone cement or other fluid fillers
    • A61B17/8805—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
    • A61B17/8822—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it characterised by means facilitating expulsion of fluid from the introducer, e.g. a screw pump plunger, hydraulic force transmissions, application of vibrations or a vacuum
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8802—Equipment for handling bone cement or other fluid fillers
    • A61B17/8805—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
    • A61B17/8825—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it characterised by syringe details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
    • B01F31/44—Mixers with shaking, oscillating, or vibrating mechanisms with stirrers performing an oscillatory, vibratory or shaking movement
    • B01F31/441—Mixers with shaking, oscillating, or vibrating mechanisms with stirrers performing an oscillatory, vibratory or shaking movement performing a rectilinear reciprocating movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
    • B01F33/5011—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held
    • B01F33/50112—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held of the syringe or cartridge type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/7174—Feed mechanisms characterised by the means for feeding the components to the mixer using pistons, plungers or syringes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/75—Discharge mechanisms
    • B01F35/754—Discharge mechanisms characterised by the means for discharging the components from the mixer
    • B01F35/75425—Discharge mechanisms characterised by the means for discharging the components from the mixer using pistons or plungers
    • B01F35/754251—Discharge mechanisms characterised by the means for discharging the components from the mixer using pistons or plungers reciprocating in the mixing receptacle
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8802—Equipment for handling bone cement or other fluid fillers
    • A61B2017/883—Means for indicating hardening of bone cement
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8802—Equipment for handling bone cement or other fluid fillers
    • A61B17/8833—Osteosynthesis tools specially adapted for handling bone cement or fluid fillers; Means for supplying bone cement or fluid fillers to introducing tools, e.g. cartridge handling means
    • A61B2017/8838—Osteosynthesis tools specially adapted for handling bone cement or fluid fillers; Means for supplying bone cement or fluid fillers to introducing tools, e.g. cartridge handling means for mixing bone cement or fluid fillers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/20—Mixing of ingredients for bone cement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/01—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like
    • B05C17/0116—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like characterised by the piston driving means
    • B05C17/0133—Nut and bolt advancing mechanism, e.g. threaded piston rods

Definitions

  • the present invention relates to a device for discharging a product.
  • the product may in particular be a bone cement or bone substitute.
  • the device is also suitable for other high-viscosity, viscous masses.
  • syringe-type containers In order to deliver a flowable product to its destination, syringe-type containers are often used. There is a piston in the container. To discharge the product from the container, the piston is advanced in a distal direction. In the simplest case, the piston is connected to a piston rod which has a thumb rest. To deliver the product, the user pushes the thumb rest with his thumb in the distal direction while holding the container between the index and middle fingers.
  • the discharged amount can only be controlled poorly.
  • viscous products such as bone cement also a relatively large force is needed, which sometimes can not be applied by the user or only with difficulty.
  • Such devices are e.g. known from US 4,832,692 or WO 2004/060468.
  • the threaded engagement is made by an actuating lever is pivoted relative to the container.
  • the threaded engagement is made by actuating a side-mounted push-button.
  • the thread engagement is made by rotating an element about the container axis relative to the container.
  • a frame is displaced relative to the container to produce the threaded engagement.
  • the user grasps the actuating ring and moves with it the mixing rod relative to the container. Around then discharge the product, the user removes the actuator from the mixing rod and pushes a hollow threaded spindle on the mixing rod. So that the actuating element can be removed from the mixing rod, the mixing rod has a predetermined breaking point at which a proximal region of the mixing rod together with the actuating ring can be broken off.
  • the actuating ring is connected to the mixing rod by a screw connection and can be unscrewed from the mixing rod.
  • a predetermined breaking point is disadvantageous that there is a risk of injury when breaking the mixing rod.
  • the function of the predetermined breaking point is usually not self-explanatory, which is why training is often required.
  • the predetermined breaking point weakens the mixing rod, so that there is a risk that the mixing rod breaks unintentionally during mixing.
  • On a screw is disadvantageous that it is tedious and time-consuming to unscrew the actuating ring of the mixing rod. The time required for this is usually not available in an operating room.
  • the present invention provides a dispensing apparatus wherein an externally threaded dispensing spool may be initially axially displaced from a female threaded counterpart prior to securing the threaded engagement.
  • the threaded engagement is to be secured in a particularly simple manner, and the operation of the discharge in securing the threaded engagement should be particularly intuitive.
  • a device for discharging a product comprising: a container forming a reservoir for the product;
  • a piston that limits the reservoir in a proximal direction and the relative to the container is displaceable in a distal direction to the product of the
  • an extrusion mandrel for exerting an extrusion force in the distal direction on the piston, the extrusion mandrel having an external thread;
  • a counterpart which is arranged at a proximal end region of the container or formed integrally with the container and is fixed at least in the proximal direction and with respect to rotations with respect to the container, with an internal thread, which is adapted to the external thread of the extrusion spindle
  • the counterpart comprising one or more thread segments which are deflectable outwardly in a lateral direction to release the threaded engagement
  • the device comprises a securing element disposed on the dispensing spindle and slidable in the distal direction towards the counterpart to prevent loosening of the threaded engagement by the securing element hinders a lateral deflection of the thread segments.
  • the inventive discharge device makes it possible to secure the threaded engagement between the Auspressspindel and the counterpart in a very simple manner.
  • the securing element By placing the securing element on the dispensing spindle, it does not interfere with the handling of the dispensing device before the dispensing spindle is inserted.
  • the handling of the device By sliding the securing element in the distal direction on the ejection element, the handling of the device is very simple and intuitive. Due to its simple structure, the device can be manufactured very inexpensively.
  • Directional indications are used in this document as follows:
  • the distal direction or, more generally, the longitudinal direction is defined by the direction of movement of the piston during product discharge.
  • the proximal direction is opposite to the distal direction.
  • the lateral direction is a direction that is transverse to the longitudinal direction.
  • a lateral direction that extends at an angle of approximately 90 ° to the longitudinal direction is also referred to as a radial direction.
  • each of the thread segments is formed on an elastically deflectable spring arm, which extends with its free end in the proximal direction. It is but eg also conceivable to pre-load the thread segments by separate spring elements inwardly with a spring force or provide the threaded segments laterally movable without the action of a spring force.
  • the counterpart before sliding the securing element a linear ratchet connection with the Auspressspindel so that the Auspressspindel is inserted into the distal direction in the counterpart by distally directed thread flanks of the external thread slide over proximally directed thread flanks of the internal thread.
  • an engagement of the thread segments of the counterpart with the external thread of the Auspressspindel only takes place in that the securing element is pushed onto the counterpart, and that the Auspressspindel can move freely before the counterpart previously.
  • the external thread may be formed as a buttress thread, with proximally directed thread flanks which are steeper than the distally directed thread flanks.
  • the proximally directed thread flanks enclose a larger angle with the longitudinal direction than the distally directed thread flanks.
  • the angle which the distally directed thread flanks enclose to the longitudinal direction is preferably between 15 ° and 45 °.
  • the angle which the proximally directed thread flanks enclose to the longitudinal direction is preferably at least 60 °, particularly preferably at least 80 °, particularly preferably approximately 90 °. The angle can exceed 90 ° if the thread forms undercuts.
  • the securing element can be fixed on the extrusion spindle before being pushed onto the counterpart.
  • the fixation can be done for example by a simple frictional engagement or by snapping.
  • the extrusion spindle has a handle at its proximal end, it is preferred that the securing element can be fixed to the extrusion spindle in the region of the handle.
  • the securing element is preferably guided on the extrusion spindle. It is preferably not removable from the dispensing spindle while the dispensing spindle is inserted into the counterpart.
  • the securing element is sleeve-shaped and surrounds the Auspressspindel. To postpone to facilitate the counterpart, the fuse element can widen to its distal end.
  • the device may in particular be a combined mixing and discharging device.
  • the device may further comprise:
  • a mixing element movable in the reservoir to agitate a product received therein, the mixing element preferably being movable both longitudinally and rotationally;
  • the mixing rod passing through the piston, the mixing rod having a distal end and a proximal end, and wherein the distal end of the mixing rod is connected to the mixing member, and
  • the present invention provides a combined mixing and dispensing apparatus wherein a mixing rod is guided by a piston and an actuator is releasably disposed at the proximal end of the mixing rod.
  • the actuator can be removed in a particularly safe, simple and intuitive way of the mixing rod.
  • a device for mixing and discharging a product which comprises:
  • a piston defining the reservoir in a proximal direction and displaceable relative to the container in a distal direction to discharge the product from the reservoir;
  • a mixing member movable in the reservoir for mixing a product received therein;
  • the mixing rod passing through the piston, the mixing rod having a distal end and a proximal end, and wherein the distal end of the mixing rod is connected to the mixing member;
  • an actuator which is connected by a releasable positive or frictional connection with the proximal end of the mixing rod and by releasing the mold or Frictional connection is removable from the mixing bar, as well
  • a locking element which is movable on the actuating element between a locking position and a release position, wherein the locking element in the locking position prevents release of the positive or non-positive connection, while allowing release of the positive connection in the release position.
  • the locking element thus ensures in the locking position a positive or frictional connection between the mixing rod and the actuating element.
  • the actuator can be replaced by a simple movement of the locking element in the release position and release of the positive or frictional connection of the mixing rod. As a result, it is no longer necessary to cancel the mixing rod, with all the disadvantages associated with it. Compared to a threaded connection handling is much easier.
  • the actuating element has one or more connecting structures which form the releasable positive or non-positive connection with the mixing rod, wherein the connecting structures can be deflected outwards relative to the mixing rod in a lateral direction in order to release the positive or frictional connection.
  • the locking element then obstructs in the locking position a lateral deflection of the connecting structures to the outside.
  • the connection structures may comprise one or more laterally outwardly deflectable resilient spring legs extending along the mixing rod in the distal direction. This allows a particularly simple and elegant connection between the mixing rod and the actuator.
  • the mixing rod preferably has one or more lateral detent recesses, wherein in each case one detent nose with a detent recess forms a positive connection.
  • the connection structures and the proximal end of the mixing rod for example, only a frictional engagement exists, which is secured by the locking element.
  • the locking element forms a sleeve, which rests laterally on the connecting structures in the locking position, in order to prevent a lateral deflection of the connecting structures, and which enables a lateral deflection of the connecting structures in the release position.
  • the locking element is preferably displaceable by a movement in the proximal direction relative to the actuating element from the locking position into the release position. This results in a particularly intuitive operation when the actuator is to be removed, since then the actuator is also withdrawn together with the locking element in the proximal direction.
  • the actuator may include a handle portion adapted to be grasped (e.g., in the form of a classic handle) with a user's hand and / or at least one finger of the hand (e.g., in the form of a ring).
  • the grip region may have the form of a ring whose size is chosen such that it is suitable for receiving at least one finger of the hand, in particular the index finger.
  • the locking element is then preferably arranged distally of the grip area on the actuating element.
  • the locking member may include a lateral flange portion arranged to allow the user to pull the locking member on the flange portion with one or more fingers of the same hand towards the handle portion of the actuating member in the proximal direction without releasing the grip portion.
  • the locking element is held in the locking position by a releasable force or positive locking on the actuating element, wherein the releasable force or positive engagement by overcoming an acting in the direction of the release position increased minimum force is solvable.
  • the device may further comprise:
  • a counterpart which is arranged at a proximal end portion of the container or formed integrally with the container and is fixed at least in the proximal direction and with respect to rotations with respect to the container, with an internal thread, which forms a threaded engagement with the external thread of the Auspressspindel.
  • the mixing rod does not widen at its proximal end.
  • the present invention provides a dispensing apparatus wherein the contents of the apparatus are particularly well protected against heating by hand warmth of a user.
  • a device for discharging a product which comprises:
  • a container having a jacket wall defining a reservoir for the product
  • a piston defining the reservoir in a proximal direction and displaceable relative to the container in a distal direction to discharge the product from the reservoir;
  • the container having on the outside insulation protrusions projecting from the shell wall to reduce thermal contact with the interior of the container when a user grips the container against the shell wall.
  • the insulation bumps may in particular comprise isolation ribs. These preferably extend along a longitudinal direction of the container.
  • the first, second and third aspects of the invention may be implemented independently or in any combination with each other.
  • Fig. 1 is a mixing and discharge device according to a preferred
  • Embodiment of the present invention in perspective view
  • Fig. 2 parts of the mixing and discharge device of Figure 1 in side view.
  • FIG. 3 shows the parts of FIG. 2 in a central longitudinal section
  • Fig. 4-7 parts of the mixing and discharge of Fig. 1 in a central
  • FIG. 8 shows a detailed view of FIG. 4 in a central longitudinal section
  • Fig. 9 is a detail view of FIG. 5 in a central longitudinal section.
  • FIG. 1 shows a preferred exemplary embodiment of a mixing and discharging device 1 according to the present invention.
  • Figures 2 and 3 show parts of this mixing and discharge in a side view and a central longitudinal section.
  • the mixing and discharging device 1 comprises a container 10, which forms a syringe body.
  • the container 10 defines with its jacket wall 12 a cylindrical reservoir 11 which defines a longitudinal direction with its cylinder axis.
  • insulation ribs 13 are formed, which extend parallel to the longitudinal direction. These isolation ribs 13 serve to reduce the transfer of body heat to the shell wall 12 when a user grasps the container 10 with his fingers. As a result, a product that is received in the reservoir 11, protected from excessive heating.
  • two opposite lateral support flanges 14 are formed on the container 10 for holding the container 10 between the index and middle fences of a user's hand.
  • a piston 20 is slidably disposed along the longitudinal direction, the piston 20 with a sealing element 21 at its periphery sealingly abuts the inside of the jacket wall 12.
  • the piston 20 thereby limits the reservoir 11 in a fluid-tight manner in a proximal direction P.
  • the container 10 has a distal removal opening which is so large that the cross section of the reservoir 11 at the distal end does not taper.
  • an external thread is formed on the shell, on which a closure 90 is screwed.
  • the closure 90 has a discharge nozzle 91 whose cross section is smaller than the cross section of the reservoir 11.
  • the discharge nozzle 91 is initially closed by a screwed plug 92.
  • a mixing element 60 is disposed in the reservoir 11 between the piston 20 and the shutter 90.
  • the mixing element 60 is formed in a manner known per se. It can e.g. have a plurality of arms which extend radially outwardly from a central hub and are connected at their free end with short circular arc segments.
  • the mixing element 60 is connected to a mixing rod 61.
  • the mixing element 60 is formed integrally with the mixing rod 61;
  • the mixing element 60 and the mixing rod 61 are separate parts, e.g. are connected together by a screw or locking connection.
  • the piston 20 has a central longitudinal bore, and the mixing rod 61 extends through this longitudinal bore.
  • the mixing rod 61 passes through the piston 20 in the axial direction.
  • the mixing rod 61 is positively, but releasably connected to an annular actuator 70. The manner in which the interlocking connection is made and released will be described below.
  • a locking element 80 prevents the positive connection between the mixing rod 61 and the actuating element 70 inadvertently released.
  • the mixing and discharging device 1 further comprises as a separate element a hollow Auspressspindcl 30, which is provided with an external thread 31.
  • the extrusion spindle 30 is provided with a handle 32 which serves to rotate the extrusion spindle 30 about its longitudinal axis.
  • the extrusion spindle 30 has a distal end region 33, which has a smaller outside diameter than the external thread 31.
  • a counterpart 40 for the Auspressspindel 30 is arranged at the proximal end of the container 10.
  • the counterpart 40 is formed integrally with the container 10;
  • the counterpart 40 can also be manufactured as a separate part and subsequently connected to the container 10.
  • the counterpart 40 has the form of a threaded sleeve which is divided into segments by a plurality of axially extending cuts. Each of the segments forms an elastically outwardly deflectable spring arm 41, at the proximal free end of an inwardly facing thread segment 42 is formed.
  • the mixing and discharge device 1 also comprises a securing sleeve 50, which is arranged in the region of the handle 32 on the extrusion spindle 30.
  • the function of the securing sleeve 50 will be explained in more detail below.
  • the locking sleeve 50 widens slightly in its distal end region 51. At its proximal end, the locking sleeve 50 is in a frictional engagement with the extrusion spindle 30 and is thereby releasably held on the extrusion spindle 30.
  • the mixing and discharging device 1 is in the state of FIGS. 1-3.
  • two components of a product were filled in the reservoir 11, which are to be first mixed together.
  • the user grasps the actuating element 70 and hereby moves the mixing rod 61 in the axial direction and at the same time in the circumferential direction back and forth.
  • the mixing element 60 is moved in a corresponding manner in the reservoir 11 and thus mixes the components.
  • the user To discharge the finished product, the user first removes the actuator 70, as shown in FIG.
  • the user inserts his thumb in the annular actuator 70 and pulls the locking member 80 with the index and middle finger in the proximal direction P. This dissolves the connection between the mixing rod 61 and the Actuator 70, as will be explained in more detail below in connection with FIG. 8.
  • the user pushes the extrusion spindle 30 in the distal direction D onto the mixing rod 61.
  • the distal end region 33 of the extrusion spindle 30 reaches the region of the counterpiece 40. Because of its reduced diameter, the distal end region 33 can easily be pushed between the thread segments 42 until the external thread 31 of the extrusion spindle 30 strikes the thread segments 42.
  • the distally directed thread flanks of the external thread 31 slide over the proximally directed thread flanks of the thread segments 42 and thereby deflect the thread segments 42 radially outward.
  • the spring arms 41 spring elastically outward. As soon as the thread segments 42 engage the external thread 31, the spring arms 41 spring back inwards. Overall, so results in a linear ratchet connection between the Auspressspindel 30 and the counterpart 40th
  • the flared distal end portion of the locking sleeve 50 facilitates the sliding of the locking sleeve 50 on the counterpart 40.
  • the locking sleeve 50 is now laterally on the spring arms 41 and thereby prevents the spring arms 41 can continue to be deflected outwards.
  • the user In order to squeeze the product out of the reservoir 11, the user first removes the sealing plug 92.
  • the user now rotates the threaded spindle 30 on the handle 32 in a clockwise direction, thus screwing the threaded spindle 30 in the distal direction D into the container 10.
  • the piston 20 is advanced in the distal direction D and forces the product out of the reservoir 11 through the discharge port 91.
  • the state at the end of the discharge process is shown in FIG.
  • the fastening element 70 has an actuating region in the form of a ring 76 and a fastening region 71 which extends from the ring 76 in the distal direction D.
  • the attachment region 71 comprises two radially opposite connection structures in the form of spring legs 72, which extend from the ring 76 in the distal direction D parallel to the longitudinal axis.
  • Each of the two spring legs 72 has on the inside a latching lug 74.
  • the spring legs 72 together define a gap 73 into which the proximal free end of the mixing rod 61 can be inserted.
  • the mixing rod 61 has at its proximal free end two opposite latching depressions 62, which are complementary to the latching lugs 74 of the fastening region 71.
  • the spring legs 72 spring outwardly until the locking lugs 74 engage in the locking recesses 62 and thus form a positive connection between the mixing rod 61 and the actuating element 70.
  • the positive locking acts both in the axial direction and in the circumferential direction, i. the actuating element 70 is fixed to the mixing rod 61 both with respect to axial movements and with respect to rotations about the longitudinal axis.
  • This positive connection is secured by the sleeve-like locking element 80.
  • the locking element 80 is in a locking position, in which it prevents a lateral deflection of the spring legs 72.
  • the locking element 80 prevents the positive connection between the mixing rod 61 and the actuating element 70 being released.
  • the locking element In the locking position, the locking element with the aid of a radially outwardly projecting retaining bead 75th fixed in a force-locking manner on the actuating element 70.
  • FIG. 1-3 the locking element 80 is in a locking position, in which it prevents a lateral deflection of the spring legs 72.
  • the locking element 80 prevents the positive connection between the mixing rod 61 and the actuating element 70 being released.
  • the locking element In the locking position, the locking element with the aid of a radially outwardly projecting retaining bead 75th fixed in a force-locking manner on the actuating element 70.
  • the locking element 80 is in a release position, in which a lateral deflection of the spring legs 72 with the latching lugs 74 and thus release of the positive connection is possible, in that the actuating element 70 is pulled off the mixing rod 61 in the proximal direction P.
  • the locking element 80 has opposite flange regions 81 which are designed to be in the proximal direction by means of the middle and ring fingers of a hand whose index finger is in the ring 76 to be pulled. Because of the retaining bead 75, a certain minimum resistance must first be overcome before the locking element 80 can be moved into the release position.
  • FIG. 9 shows the connection between the extrusion spindle 30 and the counterpart 40 in an enlarged view.
  • the counterpart 40 forms a sleeve which is divided by axial cuts into a plurality of sleeve segments which act as spring arms 41.
  • each of the spring arms 41 has a thread segment 42.
  • the thread segment has a steep distal flank 43, which forms an angle of 90 ° to the longitudinal direction, and a flat proximal flank 44, which forms an angle of approximately 30 ° to the longitudinal direction.
  • the flanks of the external thread 31 on the outer circumference of the Auspressspindel 30 are designed to be complementary.
  • the distally directed flanks 34 are correspondingly flatter than the proximally directed flanks 35.
  • the extrusion spindle 30 can be advanced axially relative to the counterpart 40 in the distal direction.
  • the external thread 31 and the thread segments 42 form a linear ratchet connection, in which the flat distal flanks 34 of the external thread 31 slide over the flat, proximally directed flanks 44 of the thread segments 42, while the steep proximal flanks 35 of the external thread 31 share the steep flanks distally directed flanks 43 of the thread segments 42 prevent retraction of the extrusion spindle 30.
  • the combination shown here Auspressspindel 30, counterpart 40 and locking sleeve 50 in a Discharge device without mixing element 60 and mixing rod 61 are used.
  • the manner in which the actuating element 70 is held on the mixing rod 61 by means of a locking element 80 can be used independently of a particular extrusion element.
  • the individual elements can also be designed differently than illustrated here by way of example.
  • the extrusion spindle 30 may have a handle of a different design and be shaped differently at its distal end. Instead of a catchy thread, a two- or multi-start thread is conceivable.
  • the counterpart 40 can also be designed differently.
  • the counterpart need not necessarily be sleeve-shaped, and not all segments of the counterpart need to form spring arms.
  • the locking sleeve 50 may have a shape other than that shown here, as long as it is suitable to prevent a deflection of parts of the counterpart 40 to the outside.
  • the container 10 does not necessarily have to have isolation ribs. If insulation is desired, other types of insulation structures may be present on the container wall 12. Insulation bumps may also be beneficial in other types of syringe-type containers.
  • the container can also be configured differently than shown here and in particular be provided with a different type of closure.

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Medical Informatics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)

Abstract

L'invention concerne un dispositif de mélange et d'extraction (1) qui comporte un conteneur de type seringue (10), dans lequel un piston peut coulisser. Une broche de pressurage (30) pourvue d'un filetage externe (31) coopère par une mise en prise filetée avec une pièce opposée (40). La pièce opposée comprend un ou plusieurs segments de filetage qui peuvent être déviés vers l'extérieur pour détacher la mise en prise filetée. Un élément de fixation (50) peut être décalé en direction distale sur la pièce opposée (40) pour empêcher un détachement de la mise en prise filetée. Une tige de mélange (61) traverse le piston (20). Un élément d'actionnement (70) est relié par un assemblage par conjugaison de formes ou à force à l'extrémité proximale de la tige de mélange. Un élément de verrouillage (80) peut être déplacé entre une position de verrouillage et une position de libération. Dans la position de verrouillage, l'élément de verrouillage empêche un détachement de l'assemblage par conjugaison de formes ou à force. Des nervures d'isolation (13) minimisent l'apport de chaleur à la suite du contact dans l'intérieur du conteneur.
EP14726382.6A 2013-06-18 2014-05-27 Dispositif de mélange et d'extraction avec une broche filetée Withdrawn EP3010434A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01138/13A CH708236A1 (de) 2013-06-18 2013-06-18 Misch- und Austragsvorrichtung mit Gewindespindel.
PCT/EP2014/060942 WO2014202350A1 (fr) 2013-06-18 2014-05-27 Dispositif de mélange et d'extraction avec une broche filetée

Publications (1)

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EP3010434A1 true EP3010434A1 (fr) 2016-04-27

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EP14726382.6A Withdrawn EP3010434A1 (fr) 2013-06-18 2014-05-27 Dispositif de mélange et d'extraction avec une broche filetée

Country Status (5)

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US (1) US20160128752A1 (fr)
EP (1) EP3010434A1 (fr)
CN (1) CN105324088A (fr)
CH (1) CH708236A1 (fr)
WO (1) WO2014202350A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106660064A (zh) * 2014-08-19 2017-05-10 药物混合系统股份公司 用于多筒管的转动式配制器
CN107635494B (zh) * 2015-05-25 2021-02-02 斯坦赫斯艾隆德有限责任公司 混合分配枪
US11234749B2 (en) * 2016-11-22 2022-02-01 Biomet Sas Mixing and delivery device for bone cement and associated methods
IT201700010432A1 (it) * 2017-01-31 2018-07-31 Accademind S R L Dispositivo di iniezione di cemento osseo
WO2019000042A1 (fr) 2017-06-28 2019-01-03 University Of Tasmania Dispositif de mélange liquide-liquide approprié pour la préparation d'échantillon par extraction liquide-liquide
US11229468B2 (en) * 2019-06-11 2022-01-25 Vivex Biologics Group, Inc. Mixing syringe and method of use
EP3815777B1 (fr) * 2019-10-30 2023-08-02 medmix Switzerland AG Système de mélange et de distribution et procédé de mélange et de distribution de matériau à partir d'un système de mélange et de distribution
WO2021212275A1 (fr) * 2020-04-20 2021-10-28 Covidien Lp Dispositif de mélange motorisé destiné à être utilisé avec des agents médicaux
CN111632553A (zh) * 2020-06-16 2020-09-08 马鞍山采石矶涂料有限公司 一种油漆颜色调配装置
US12109109B2 (en) 2020-09-04 2024-10-08 Ophthalmo Pro Gmbh Injector for intraocular lenses
JP7625691B2 (ja) 2020-09-04 2025-02-03 オフサルモ・プロ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング 眼内レンズ用の挿入器
CN116919558A (zh) * 2022-04-01 2023-10-24 河南宏力医院有限公司 一种骨外科手术植骨器
WO2024237395A1 (fr) * 2023-05-15 2024-11-21 오스템임플란트 주식회사 Dispositif d'injection de matériau de greffe osseuse
EP4545027B1 (fr) 2023-10-26 2025-10-01 Heraeus Medical GmbH Dispositif pour exprimer du ciment osseux, utilisation et système
FR3164921A1 (fr) * 2024-07-25 2026-01-30 Histone Dispositif pour le mélange et l’injection d’une composition, notamment un ciment osseux

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1998692A (en) * 1933-10-10 1935-04-23 Oramold Products Corp Kneading or mixing device
US2736315A (en) * 1954-03-23 1956-02-28 James F Feeney Hypodermic syringe piston and actuating stem assembly
DE6918563U (de) * 1969-05-24 1970-01-29 Fritz Dr Gorbahn Einweg-injektionsspritze fuer sehschwache und/oder blinde
DE7603096U1 (de) * 1976-02-04 1976-08-19 Espe Pharm Praep Vorrichtung zur dosierten Abgabe viskoser Massen
US4153056A (en) * 1977-06-16 1979-05-08 Jules Silver Syringe with removable length adjusting member
US4312343A (en) * 1979-07-30 1982-01-26 Leveen Harry H Syringe
US4444335A (en) * 1981-09-14 1984-04-24 Merck & Co., Inc. Delivery of adjustable quantities of materials
US4583974A (en) * 1984-04-04 1986-04-22 Kokernak Denis T Syringe for balloon dilation catheters
JPS6130699U (ja) * 1984-07-26 1986-02-24 三菱鉛筆株式会社 注入器
US4641766A (en) * 1984-11-02 1987-02-10 Alcon Laboratories, Inc. Metering dispenser for high viscosity compositions
US4832692A (en) * 1986-10-14 1989-05-23 Cordis Corporation Inflation syringe assembly for percutaneous transluminal angioplasty
US4810249A (en) * 1987-03-12 1989-03-07 Habley Medical Technology Corp. Linear and Vernier-type syringe
US4874385A (en) * 1987-12-16 1989-10-17 Sherwood Medical Company Plunger lock device
US5306248A (en) * 1992-04-07 1994-04-26 C. R. Bard, Inc. Selectively controllable inflation-deflation device adapted for use in angioplasty procedures
US5634910A (en) * 1995-09-22 1997-06-03 Ryder International Corporation Syringe instrument
US5860955A (en) * 1996-07-18 1999-01-19 B. Braun Medical Inc. Locking angioplasty syringe
US5961496A (en) * 1997-06-17 1999-10-05 Novo Nordisk A/S Syringe with tiltable nut for quick piston disengagement
US6110151A (en) * 1998-08-13 2000-08-29 Namic Usa Corporation Inflation device
DE10023086A1 (de) * 2000-05-11 2001-11-15 Festo Tooltechnic Gmbh & Co Handgerät zum Auspressen pastöser Massen aus Kartuschen oder dergleichen Behältern
US6916308B2 (en) * 2000-06-08 2005-07-12 Cook Incorporated High pressure injection syringe
US6562007B1 (en) * 2000-09-28 2003-05-13 Bayer Healthcare Llc Adjustable dosage syringe
ITVI20020140A1 (it) * 2002-06-26 2003-12-29 Tecres Spa Dispositivo per il dosaggio manuale di un fluido medicale particolarmente cemento osseo
DE10242984B4 (de) * 2002-09-17 2010-09-23 Sanatis Gmbh Vorrichtung zum Herstellen von Gemischen aus zwei Komponenten
US7207971B2 (en) * 2002-12-23 2007-04-24 Boston Scientific Scimed, Inc. Pressure relief devices for use with balloon catheters
US20110118701A1 (en) * 2008-01-30 2011-05-19 Bruno Baney Dose Dividing Delivery Device
SE535983C2 (sv) * 2010-04-20 2013-03-19 Noviscens Ab Spruta
US20120265209A1 (en) * 2011-04-13 2012-10-18 Kyphon Sarl Apparatus and methods for mixing materials
CH705193A1 (de) * 2011-06-22 2012-12-31 Medmix Systems Ag Vorrichtung zum blasenarmen Mischen und Austragen eines Produkts.
US9456861B2 (en) * 2013-06-24 2016-10-04 Nordson Corporation Dispensing assembly having mixing and plunging assembly, and related methods

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014202350A1 *

Also Published As

Publication number Publication date
WO2014202350A1 (fr) 2014-12-24
US20160128752A1 (en) 2016-05-12
CN105324088A (zh) 2016-02-10
CH708236A1 (de) 2014-12-31

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