WO1988009645A1 - Recipient de malaxage avec dispositif d'injection d'une masse plastique notamment pour des applications dentaires, et son appareil d'actionnement - Google Patents

Recipient de malaxage avec dispositif d'injection d'une masse plastique notamment pour des applications dentaires, et son appareil d'actionnement Download PDF

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Publication number
WO1988009645A1
WO1988009645A1 PCT/EP1988/000459 EP8800459W WO8809645A1 WO 1988009645 A1 WO1988009645 A1 WO 1988009645A1 EP 8800459 W EP8800459 W EP 8800459W WO 8809645 A1 WO8809645 A1 WO 8809645A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
mixing container
mixing
piston
actuating device
Prior art date
Application number
PCT/EP1988/000459
Other languages
German (de)
English (en)
Inventor
Ernst Mühlbauer
Original Assignee
Muehlbauer Ernst
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 Muehlbauer Ernst filed Critical Muehlbauer Ernst
Publication of WO1988009645A1 publication Critical patent/WO1988009645A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31596—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms comprising means for injection of two or more media, e.g. by mixing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/60—Devices specially adapted for pressing or mixing capping or filling materials, e.g. amalgam presses
    • A61C5/66—Capsules for filling material

Definitions

  • the invention relates to a mixing container with ejection devices for a plastic mass, in particular for dental purposes, and an actuating device therefor, the mixing container being a mixing chamber, at one end of which there is an ejection opening, a piston which is displaceable in the mixing chamber and the other Forms end of the mixing chamber delimiting perforated wall, and beyond the perforated wall comprises a receiving chamber for a film container containing a liquid component and wherein the ejection device comprises a holder for the mixing container and a plunger for pressing the film container against the perforated wall, and further comprising a device for holding the Piston is provided relative to the force exerted by the stamp on the film container.
  • the mixing vessel of the type .berianenen is initially by means of a punch which 'may be wholly or partially be disposed within the mixing vessel downstream of the receiving chamber, so great a pressure on the Foil container exercised that this bursts in the region of the opening of the perforated wall and pours its contents into the mixing chamber.
  • the mixing container is then clamped in a vibration mixer, which shakes it at high frequency approximately in the direction of its longitudinal axis and thereby intimately mixes the components in the mixing chamber with one another to form the ready-to-use mass.
  • the ejection opening of the mixing container is opened and it is clamped into the ejection device, which drives the piston forward within the mixing chamber by means of a plunger or plunger in order to eject the mass.
  • the piston delimiting the receiving chamber on the side of the mixing chamber must be held in position in order to be able to exert a corresponding counterforce. Otherwise it would move into the mixing chamber, so that the resulting pressure would not be sufficient to destroy the film container and the volume of the mixing chamber would be reduced.
  • the piston is pot-shaped for this purpose and its wall, which surrounds the receiving chamber and the stamp located behind it, protrudes from the rear of the mixing container, where it is an attachment part for forms a bayonet ring, which secures it against unwanted displacement in the direction of the mixing chamber.
  • a screw cap which forms the receiving chamber with an additional perforated wall, can be removed after emptying the film container, the opening remaining in the piston by means of a special part or stamp during ejection of the mixed material must be closed.
  • the handling is complicated and the structure is complex. There is also the risk that harmful gaseous monomers will escape through the piston opening during handling.
  • the invention is therefore based on the object of simplifying the construction and handling of the mixing container.
  • the solution according to the invention consists in that the device for holding the piston is formed by a clamp of the actuating device which holds the piston through the mixing container wall.
  • the mixing container wall contains at least one opening and the piston has a recess for the passage or engagement of part of the bracket of the actuating device. It is more expedient to arrange two openings and recesses opposite one another so that the mixing container can be inserted between two clamp parts of the device which engage in these openings and recesses.
  • the clamp parts can be moved relative to one another like pliers, but they are advantageously rigidly connected to one another.
  • These can be those runners which, in known ejection devices, cooperate with the end face of the mixing container which carries the ejection tube, so that one and the same device for emptying the film container into the mixing space while simultaneously fixing the piston and for ejecting the mixed one Mass from the mixing container can be used.
  • Another embodiment principle of the inventive concept is based on the fact that the device-side clamp acts on the piston through the resilient container wall and clamps it in the intended position.
  • Fig. 4 shows a section along line IV-IV of Fig. 1 and the front view an associated actuating device
  • Fig. 6 shows a second embodiment of the
  • FIGS. 6 and 7 shows a front view of the actuating device according to FIGS. 6 and
  • Fig. 8 shows a third embodiment
  • the mixing container consists of a container body 1, which has a cylindrical wall 2, a front end face 3 and therein an ejection tube 4, which can be closed by means of a stopper 5.
  • the piston 7 contains an annular groove 12.
  • the wall 2 of the container body 1 in the position according to FIG. 1, ie before use contains two diametrically opposite openings 13 which - As can be seen from Fig. 4, are slit-shaped, so that the wall parts 14 remaining between them extend over a width that is less is the outside diameter of the piston 7.
  • the associated actuating device of known design has an end plate 15 which contains a cutout 17 delimited by parallel runners 16. Behind the end plate 15, a receiving space 18 is formed for the mixing container, in which a plunger 19 can be advanced by means of a mechanism, not shown.
  • this device is used in such a way that the runners 16 engage in front of the end face 3 of the mixing container when the piston and the plunger are driven by means of the plunger 9 in order to eject the mass.
  • the clear distance between the runners 16 is less than the outer diameter of the piston 7 and slightly larger than the width of the wall parts 14, so that the runners 16 when inserted from the side into the slot-shaped openings 13 of grasp both sides through the openings 13 into the annular groove 12 of the piston 7 and thereby fix it in its position.
  • This state is shown in Fig.l. It can be seen that when the plunger 19 now advances, the plunger 11 can be advanced against the piston 7 while emptying the film container 10, the force exerted on the piston 7 being taken over directly by the runners 16.
  • the punch 11 has a front area 20 with a larger and a rear area 21 with a smaller diameter.
  • the wall 2 of the container body contains, where the front, larger area 20 is in the position according to FIG. 1, openings 22 which correspond to the openings 13 in shape and arrangement.
  • openings 22 which correspond to the openings 13 in shape and arrangement.
  • FIGS. 1 to 5 has the advantage that the mixing container is constructed in a very simple manner and nevertheless reliable, simple and error-proof handling is possible by means of a design-proven actuating device.
  • FIGS. 6 and 7 is the same as that according to FIGS. 1 to 5, with the exception that no openings are provided in the wall 2 of the container body 1 for the action of the runners 16 on the piston 7, but rather the elastic deformability of the wall 2 is used, which deforms with a strong radial clamping of the runners 16 into the annular groove 12 of the piston 7.
  • runners 16 do not engage in the area of the annular groove 12, but rather on the mixing chamber side in front of the piston 7.
  • Laterally movable runners 16 according to FIG. 6 or a wedge-shaped arrangement of the same according to FIG. 7 are suitable for this function.
  • the radial clamping of the piston 7 through the wall 2 is based on the wedge effect of the runners 23 forming the device-side clamp, which can be formed, for example, by a ring wedge surface 24 opening towards the plunger 19, which cooperates with an annular projection 25 on the outer surface of the wall 2 of the container body 1 and which is located slightly in front of the piston 7 on the mixing comb side. If the force of the plunger 19 acts on the mixing container in the direction of the arrow 26, a counterforce acting in the direction of the arrow 27 results on the runners 23, which leads to a radial compression of the annular projection 25 via the wedge surfaces 24, whereby the piston 7 in the wall 2 is clamped.
  • the effect can be enhanced by equipping the inside of the wall 2 with a ring projection 28 of a known type.
  • the piston 7 could only move past the ring projection 28 if the wall 2 expands elastically at this point; it is prevented by the runners 23.
  • the force threshold generated by known inner ring projections (see the prior art explained at the outset) against a forward movement of the piston 7 is based exclusively on the elastic restoring force of the container wall 2, which is why the projections have to be made relatively large, a very small one is sufficient for the effect according to the invention Height of the inner ring projection 28. Since it is held rigidly by the runners 23 or even pressed inwards, the disadvantages of similar known designs are eliminated here.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Anesthesiology (AREA)
  • Engineering & Computer Science (AREA)
  • Vascular Medicine (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Coating Apparatus (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

Un récipient de malaxage avec des dispositifs d'injection d'une masse plastique, notamment pour des applications dentaires, et associé à un appareil d'actionnement, comprend une chambre de malaxage (6) ayant à une extrémité un orifice d'injection (4), un piston (7) mobile dans la chambre de malaxage qui forme une paroi perforée de limitation de l'autre extrémité de la chambre de mélange, et au-delà de la paroi perforée une chambre de réception d'un récipient pelliculaire (10) contenant des éléments liquides. L'appareil d'actionnement comprend un support pour le récipient de malaxage et une étampe (11) pour comprimer le récipient pelliculaire contre la paroi perforée. Un dispositif retient le piston contre la force exercée par l'étampe sur le récipient pelliculaire. Ce dispositif est formé par un crampon de l'appareil d'actionnement qui traverse la paroi du récipient de malaxage et retient le piston. Ce crampon peut être formé de barres (16) qui traversent au moins un orifice (13, 22) de la paroi élastiquement déformable (27) du récipient de malaxage.
PCT/EP1988/000459 1987-06-01 1988-05-24 Recipient de malaxage avec dispositif d'injection d'une masse plastique notamment pour des applications dentaires, et son appareil d'actionnement WO1988009645A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3718326.5 1987-06-01
DE19873718326 DE3718326A1 (de) 1987-06-01 1987-06-01 Mischbehaelter mit ausspritzeinrichtung fuer eine plastische masse, insbesondere fuer dentalzwecke, und betaetigungsgeraet dafuer

Publications (1)

Publication Number Publication Date
WO1988009645A1 true WO1988009645A1 (fr) 1988-12-15

Family

ID=6328809

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1988/000459 WO1988009645A1 (fr) 1987-06-01 1988-05-24 Recipient de malaxage avec dispositif d'injection d'une masse plastique notamment pour des applications dentaires, et son appareil d'actionnement

Country Status (2)

Country Link
DE (1) DE3718326A1 (fr)
WO (1) WO1988009645A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991007924A1 (fr) * 1989-11-23 1991-06-13 Southern Dental Industries Limited Capsule d'amalgame dentaire

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3920537C2 (de) * 1988-07-18 1994-01-20 Ernst Muehlbauer Mehrkomponenten-Mischkapsel mit Ausspritzeinrichtung für die gemischte Masse, insbesondere für Dentalzwecke
DE8809184U1 (fr) * 1988-07-18 1988-09-08 Muehlbauer, Ernst, 2000 Hamburg, De
US5297698A (en) * 1991-07-25 1994-03-29 Minnesota Mining And Manufacturing Company Two-stage mixing and dispensing assembly for preparations such as dental cements
DE9204508U1 (fr) * 1992-04-02 1993-08-05 Ihde, Stefan, Prof.Dr., Uetliburg, Ch
DE4302085C1 (de) * 1993-01-21 1994-07-21 Ihde Stefan Verfahren zum Dosieren und Mischen von aus mehreren Komponenten bestehenden Zahnfüllstoffen und Einrichtung zur Durchführung des Verfahrens
DE9212249U1 (fr) * 1992-09-11 1992-11-19 Ihde, Stefan, Prof. Dr., 8000 Muenchen, De
DE4315920C1 (de) * 1993-05-12 1994-12-22 Ivoclar Ag Mischkapsel für Dentalmassen
US5385236A (en) * 1994-06-06 1995-01-31 Cowan; John D. Articulated edge guard protector
DE202006002926U1 (de) 2006-02-23 2006-04-20 Dentaco Dentalindustrie Und -Marketing Gmbh Appliziervorrichtung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2527991A (en) * 1947-11-21 1950-10-31 Alvin A Greenberg Container
DE1939316A1 (de) * 1969-08-01 1971-02-04 Dentaire Ivoclar Ets Mischbehaelter fuer die Aufnahme von miteinander reagierenden Substanzen fuer die Herstellung von gebrauchsfertigen Dentalpraeparaten

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2527991A (en) * 1947-11-21 1950-10-31 Alvin A Greenberg Container
DE1939316A1 (de) * 1969-08-01 1971-02-04 Dentaire Ivoclar Ets Mischbehaelter fuer die Aufnahme von miteinander reagierenden Substanzen fuer die Herstellung von gebrauchsfertigen Dentalpraeparaten

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991007924A1 (fr) * 1989-11-23 1991-06-13 Southern Dental Industries Limited Capsule d'amalgame dentaire

Also Published As

Publication number Publication date
DE3718326A1 (de) 1988-12-22

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