EP2072114B1 - Vorrichtung zum Vermischen von Knochenzement - Google Patents

Vorrichtung zum Vermischen von Knochenzement Download PDF

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Publication number
EP2072114B1
EP2072114B1 EP08018303A EP08018303A EP2072114B1 EP 2072114 B1 EP2072114 B1 EP 2072114B1 EP 08018303 A EP08018303 A EP 08018303A EP 08018303 A EP08018303 A EP 08018303A EP 2072114 B1 EP2072114 B1 EP 2072114B1
Authority
EP
European Patent Office
Prior art keywords
mixing
dispensing tube
handle
guide body
cylinder
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.)
Active
Application number
EP08018303A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2072114A1 (de
Inventor
Sebastian Dr. Vogt
Hubert Dr. Büchner
Clemens Graf von Brühl
Edgar WÜST
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.)
Heraeus Medical GmbH
Original Assignee
Heraeus Medical GmbH
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 Heraeus Medical GmbH filed Critical Heraeus Medical GmbH
Priority to SI200830200T priority Critical patent/SI2072114T1/sl
Priority to PL08018303T priority patent/PL2072114T3/pl
Publication of EP2072114A1 publication Critical patent/EP2072114A1/de
Application granted granted Critical
Publication of EP2072114B1 publication Critical patent/EP2072114B1/de
Priority to CY20111100358T priority patent/CY1111376T1/el
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • 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
    • 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
    • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
    • B01F35/32—Driving arrangements
    • B01F35/32005—Type of drive
    • B01F35/3202—Hand driven

Definitions

  • the invention relates to a mixing device, in particular for bone cements and their components, with a mixing cylinder, at one end of a closed end face is arranged coaxial with the longitudinal axis of the mixing cylinder has a sliding bearing forming opening in which a discharge tube arranged displaceably in the direction of the longitudinal axis is, wherein disposed on the inside of the mixing cylinder end of the discharge tube, a mixing disk having one or more mixing apertures, wherein the mixing disk has a central outlet opening and wherein the mixing disk between the closed end side and a bottom of the mixing device is arranged.
  • Bone cements basically consist of a liquid monomer component and a powder component.
  • a plastically deformable dough in which a polymerization reaction takes place, so that with increasing polymerization, the viscosity of the cement dough increases until solidification or curing.
  • PMMA bone cements can be mixed by simply mixing the powder component with the monomer component in a crucible with the aid of spatulas.
  • a number of mixing devices have been described that allow mixing of the cement components in the closed system so that the burden on the medical staff can be reduced by any monomer fumes and cement powder dusts that may occur.
  • Such mixing devices are made, for example US 5,779,356 .
  • the object of the present invention is to provide a mixing device with which the cement powder can be mixed with the monomer component to form a largely non-porous cement paste, wherein the dough should be reliably applied in a simple manner.
  • a handle is releasably fixed, mixing of the components in a simple manner possible, wherein the discharge pipe is used as part of the mixing mechanism. After mixing, it is easy to dispense the cement from the mixing device.
  • the handle can be non-positively connected to the discharge pipe.
  • a guide body is arranged on the handle, which protrudes into the discharge pipe, wherein between the guide body and discharge at least one clamping body is arranged.
  • the guide body is movable and slidably disposed on the handle in the direction of the longitudinal axis of the discharge tube.
  • the discharge pipe is therefore used on the one hand for mixing the cement component and on the other hand for discharging the ready-mixed cement paste.
  • the discharge pipe is closed by a cylinder which is connected to the guide body.
  • a stop surface is arranged on the handle, to which the clamping body can be applied and that the clamping body is fixed to the guide body.
  • the clamping body can be fixed to the guide body in a material-locking, positive-locking or force-locking manner.
  • Stop surface and clamping body may each have an extension along the longitudinal axis and it may be advantageous that the distance of the stop surface and / or the stop surface facing surface of the clamping body to the longitudinal axis in the direction of the longitudinal axis over at least part of its extension continuously changes. As a result, an optimal fixability of the handle and the guide body is possible.
  • On the guide body thus a so-called spreader and a handle on its outwardly projecting end arranged.
  • the guide body can be detachably connected to the discharge pipe by an interference fit of this expansion body (clamping body) against an inner axially slotted cylinder and an outer cylinder, both of which can be arranged on the handle, and after completion of the mixing operation can be characterized by axial movement of the guide body in the direction Grip the press fit to be solved, wherein the guide body can be removed together with the discharge pipe on its inner side closing cylinder from the discharge pipe.
  • the quick release locking of the guide body allows opening of the discharge tube within a few seconds.
  • the ready mixed cement dough can be applied without delay after mixing. This gives the medical staff a longer time window for processing the cement.
  • the guide body extends in the discharge pipe, preferably in the area of the mixing disk.
  • the guide body furthermore has a closed end face pointing into the interior of the mixing cylinder with a diameter which corresponds to the inner diameter of the discharge pipe or the discharge opening of the mixing disk. This prevents inadvertent penetration of bone cement or its components into the discharge tube.
  • a hollow cylinder may be arranged, which has at least over a part of its length extending in the longitudinal direction slots. This slotted hollow cylinder is pressed by the clamp body to the discharge tube, whereby the handle can be securely fixed.
  • the hollow cylinder is thus preferably fixed to the handle, wherein the stop surface is arranged on the hollow cylinder.
  • the clamping body can be fixed non-positively between the guide body and discharge pipe.
  • the secure holder is thereby ensured by the pressing of the parts together and the high frictional forces generated thereby.
  • the clamping body may advantageously be formed of an elastic material, so that the power transmission is improved.
  • the closed front side of the mixing device is designed as a detachable lid, preferably as a screw cap.
  • the bottom is expediently displaceable in the mixing cylinder in its longitudinal direction. It then serves both as a boundary of the mixing cylinder and as a piston for discharging the cement dough.
  • the in FIG. 1 mixing cylinder 1 of the mixing device illustrated with its upper region is closed at its upper end side with a screw cap 2.
  • a discharge pipe 3 into it.
  • the discharge pipe 3 slides in the opening 4 of the screw cap 2 in the direction of the longitudinal axis of the mixing device.
  • a mixing disk 5 is arranged in the interior of the mixing cylinder 1, which is slidably applied to the inner wall of the mixing cylinder 1.
  • the mixing disk 5 has a plurality of mixing openings, not shown in the drawing, through which the space of the mixing cylinder 1 lying above the mixing disk 5 is connected to the underlying part of the interior of the mixing cylinder 1.
  • the guide body 7 protrudes out of the discharge pipe 3 at the outer end and into the handle 9.
  • the guide body 7 is formed substantially as a cylindrical rod. Your projecting into the handle 9 end is rotatably mounted by means of a rotary joint 10 on a rocker 11.
  • the rocker 11 is rotatably mounted by means of a pivot point 12 on the lower part 13 of the handle 9.
  • the guide body 7 facing away from the end of the rocker 11 rests on a support 14 which is rigidly arranged on the upper part 15 of the handle 9.
  • the upper part 15 is rotatably connected to the lower part 13 of the handle 9 via the joint 16.
  • the rotatable connections of the rotary joint 10, the pivot point 12 and the joint 16 are realized in that in each case engages a not shown in the drawing cylindrical pin in the two parts to be joined together.
  • Other common rotary joints may be used.
  • nubs may be attached to one of the two components involved, which engage in grooves or similar depressions of the other part.
  • a clamping body 17 is arranged around this.
  • the clamping body 17 has a diameter which is slightly larger than the diameter of the stop surface 18 having hollow cylinder 19, which extends at the bottom of the lower part 13 of the handle 9 in the discharge pipe 3 and rests against the inner wall.
  • the clamping body 17 presses the hollow cylinder 19 circumferentially against the inside of the discharge pipe 3, so that the guide body 7 is fixed.
  • the hollow cylinder 19 is slotted and has individual lamellae 20 ( FIG. 4 ) to be more easily pressed against the discharge pipe 3 can. Slots 21 are provided between the slats 20.
  • the clamping body 17 itself is formed of plastic and materially connected to the guide body 7.
  • a tubular connecting piece 22 is arranged on the lower part 13 around the outside of the discharge tube 3, so that the clamping holder is further stabilized.
  • the support 14 lifts one end of the rocker 11, so that in an abutment 12 'with its pivot point 12 mounted rocker 11 rotates about the pivot point 12.
  • the end of the rocker 11 having the rotary joint 10 is moved downwards in the direction of the discharge pipe 3, so that the guide body 7 is moved in the mixing cylinder 1.
  • the clamping body 17 is released from the stop surface 18 of the hollow cylinder 19, so that the pressure of the hollow cylinder 19 against the discharge pipe 3 decreases and the handle 9 can be released from the discharge pipe 3.
  • the handle 9 is pulled away approximately in the direction of the longitudinal axis of the discharge pipe 3, so that the guide body 7 is pulled out of the discharge pipe 3.
  • the outlet opening is thereby released, so that the bone cement located in the mixing cylinder 1 can be deployed.
  • FIG. 3 the upper part 15 of the handle 9 is shown.
  • the joint opening 16 'of the cylinder pin not explicitly shown in the drawing is used, which engages in the joint 16 of the lower part 13 to rotatably connect lower part 13 and upper part 15 with each other.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Prostheses (AREA)
  • Surgical Instruments (AREA)
  • Materials For Medical Uses (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP08018303A 2007-12-19 2008-10-20 Vorrichtung zum Vermischen von Knochenzement Active EP2072114B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SI200830200T SI2072114T1 (sl) 2007-12-19 2008-10-20 Naprava za meĺ anje kostnega cementa
PL08018303T PL2072114T3 (pl) 2007-12-19 2008-10-20 Urządzenie do mieszania cementu kostnego
CY20111100358T CY1111376T1 (el) 2007-12-19 2011-04-05 Διαταξη για την αναμιξη τσιμεντου οστου

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007061696A DE102007061696B4 (de) 2007-12-19 2007-12-19 Mischvorrichtung, insb. für Knochenzemente

Publications (2)

Publication Number Publication Date
EP2072114A1 EP2072114A1 (de) 2009-06-24
EP2072114B1 true EP2072114B1 (de) 2011-01-05

Family

ID=40377154

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08018303A Active EP2072114B1 (de) 2007-12-19 2008-10-20 Vorrichtung zum Vermischen von Knochenzement

Country Status (10)

Country Link
EP (1) EP2072114B1 (hr)
AT (1) ATE494060T1 (hr)
CY (1) CY1111376T1 (hr)
DE (2) DE102007061696B4 (hr)
DK (1) DK2072114T3 (hr)
ES (1) ES2359032T3 (hr)
HR (1) HRP20110222T1 (hr)
PL (1) PL2072114T3 (hr)
PT (1) PT2072114E (hr)
SI (1) SI2072114T1 (hr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013011295A1 (de) 2013-07-08 2015-01-08 Heraeus Medical Gmbh Vorrichtung zum Lagern und Mischen von Knochenzement
EP2883603A1 (de) 2013-12-16 2015-06-17 Heraeus Medical GmbH Vorrichtung zum Lagern und Mischen von Knochenzement

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010046055B4 (de) 2010-09-22 2012-10-25 Heraeus Medical Gmbh Mischvorrichtung für Prepack-Vakuum-Zementiersystem
EP2452742A1 (de) 2010-11-11 2012-05-16 Krämer AG Bassersdorf Kontrolleinrichtung für eine Mischvorrichtung

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8335529U1 (de) * 1983-12-10 1984-03-08 Upat Gmbh & Co, 7830 Emmendingen Spritz-kartusche
DE3439975A1 (de) * 1983-12-10 1985-06-20 Upat Gmbh & Co, 7830 Emmendingen Spritz-kartusche
DE8505393U1 (de) * 1985-02-26 1985-04-11 Korte-Jungermann, Hans-Werner, 4156 Willich Spritz-Kartusche
SE462315B (sv) * 1989-05-03 1990-06-11 Surgitec Ab Anordning foer tillverkning av bencement
SE510490C2 (sv) * 1992-02-07 1999-05-31 Scandimed International Ab Förfarande för framställning av bencement och anordning för genomförande av förfarandet
SE9301599L (sv) * 1993-05-10 1994-06-27 Cemvac System Ab Anordning för inmatning av bencementkomponenter i ett under undertryck stående blandningskärl
DE4409610C3 (de) * 1994-03-21 2001-09-20 Scandimed Internat Ab Sjoebo Mischvorrichtung
US5779356A (en) * 1996-02-21 1998-07-14 Chan; Kwan-Ho Apparatus and method for mixing first and second components of a bone cement in a vacuum
DE19828351C2 (de) * 1997-06-26 1999-06-17 Hans Georg Kupp Spritz-Kartusche
US6120174A (en) * 1999-01-14 2000-09-19 Bristol-Myers Squibb Apparatus and method for mixing and dispensing bone cement
JP2004528948A (ja) * 2001-06-14 2004-09-24 セムヴァック システム アーベー 骨セメントの調製方法及び骨セメント調製用装置
SE527528C2 (sv) * 2004-06-22 2006-04-04 Bone Support Ab Anordning för framställning av härdbar massa samt användning av anordningen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013011295A1 (de) 2013-07-08 2015-01-08 Heraeus Medical Gmbh Vorrichtung zum Lagern und Mischen von Knochenzement
EP2823881A1 (de) 2013-07-08 2015-01-14 Heraeus Medical GmbH Vorrichtung und Verfahren zum Lagern und Mischen von Knochenzement
EP2883603A1 (de) 2013-12-16 2015-06-17 Heraeus Medical GmbH Vorrichtung zum Lagern und Mischen von Knochenzement

Also Published As

Publication number Publication date
PL2072114T3 (pl) 2011-06-30
DE502008002200D1 (de) 2011-02-17
ATE494060T1 (de) 2011-01-15
SI2072114T1 (sl) 2011-06-30
DE102007061696A1 (de) 2009-06-25
DK2072114T3 (da) 2011-04-11
HRP20110222T1 (hr) 2011-04-30
DE102007061696B4 (de) 2010-03-18
EP2072114A1 (de) 2009-06-24
CY1111376T1 (el) 2015-08-05
PT2072114E (pt) 2011-04-05
ES2359032T3 (es) 2011-05-17

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