Classifications

• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
  • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
  • G09B23/28—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for medicine
  • G09B23/283—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for medicine for dentistry or oral hygiene

Definitions

• the invention relates to a teaching and exercise device for simulating and practicing dental-clinical operations and for performing dental work.
• a device of this type is described in DE 39 41 332 AI. It is a combined teaching and training device, consisting of a fixed dental teaching and training device and a portable dental teaching and training device, the latter being box-shaped and, when not in use, under half of the table-shaped, fixed dental teaching and training device Exercise device can be pushed so that in the area of the other half there is still a processing station for dental work on this teaching and exercise device. To carry out metal-cutting work, a suction hood is arranged in the area of the free half of this device to prevent dust from getting into the environment during such work.
• the portable dental teaching and exercise device is provided with a phantom head or a bust on which the dental-clinical operations can be carried out, the phantom bust from a swiveled-down parking position in which it can be pushed under the dental technical teaching and exercise device , can be swiveled up and down in several working positions, corresponding to the required treatment positions.
• the dental teaching and exercise device is assigned a spray mist suction device with a suction tube which can be hung in the mouth of the phantom head.
• the suction line of which branches and forms a liquid suction device and a solid suction device there is only one common suction source, the suction line of which branches and forms a liquid suction device and a solid suction device.
• a switchover device for opening one and closing the other suction line branch is preferably assigned to the suction line branches in the region of the branch.
• Figure 1 is a combination of a fixed dental teaching and training device and a portable dental teaching and training device combined teaching and training device in a perspective view.
• Figure 2 shows the dental teaching and exercise device with a suction system and a water separator device in a perspective view.
• FIG. 3 shows the suction system in a schematic representation.
• FIG. 4 shows the teaching and exercise device according to FIG. 2 in a side view from the left, partly in section;
• FIG. 5 shows the detail identified by x in FIG. 2 in an enlarged vertical section
• FIG. 6 shows a stationary dental teaching and exercise device in a perspective view as a single unit
• Fig. 7 is a combined teaching and exercise device modified embodiment in a perspective view.
• the combined teaching and training device 1 consists of the fixed dental teaching and training device 2 in the form of a work table 3 with a horizontal worktop 4 and four feet or two lateral vertical foot plates 5 and the portable dental teaching and training device 6, which a cabinet-like Has substructure 7, on which a phantom head 8 and preferably a phantom bust 9 can be pivoted in and out in a vertical plane and can be locked in the desired pivot positions. That on
• Rollers 6a standing dental device 6 is only about half as large in width as the dental device 2, and it is when not in use
• Parking position below the worktop 4 in the area of one side half can be pushed so that the other side half is available as a dental processing station 11.
• the work table 3 equipped with a fixed and a movable lamp 12, 13 can be equipped with at least one driven dental tool for performing dental work, which is not shown for reasons of simplification.
• a dust extraction device 14 assigned to the dental device 2, preferably in the form of a suction hood 15, is held in the central region of the processing station 11 on the front side 16 of the table 3, in particular on the worktop 4, or on the dental device 6 and also from this device 6 supplied with suction air.
• the dental device 6 is associated with a liquid or spray suction device 17 consisting of a flexible hose 18 and one at its free end arranged suction tube 19 which is inserted into the mouth of the phantom head 8 for suction.
• the dental device 6 is provided with a holding device 22 for the spray suction device 20 when it is not in use.
• the spray suction device 20 can be suspended at one end of the pivot axis 23 which supports the phantom bust 9 on a support column.
• the dust and spray suction devices 14, 17 are parts of a common suction system 24 assigned to the dental device 6, according to FIGS. 2 and 3 a suction machine 25, from which a common suction line section 26 starts, which branches off into a spray suction line section 28 and a dust suction section 29 branches, of which the former extends to the spray cleaner 20, while the latter extends to the suction mouth 15.
• a water separator 31 with a float 32 is connected to the spray suction line section 28, which preferably emits a signal electrically and / or switches off the suction machine 25 when the water in a collecting container 33 of the water separator 31 exceeds a prescribed fill level.
• a dust collector is designated, which is arranged in the common suction line section 26.
• Reference numeral 35 designates a filter, in particular an activated carbon filter, which is arranged in the exhaust air line 36 leading away from the suction machine 25.
• a switching device 37 is provided for the suction air, in each of which one of the two suction lines 28, 29 is connected to the suction machine 25, while the other suction section is blocked.
• the reference numeral 38 designates a plug-in coupling for or in the dust extraction line section 29, which makes it possible to remove the latter when the dust extraction device 14 is not in use and to reconnect it when in use.
• the arrangement is preferably such that the switching device 37 is switched over when the plug 38a is inserted into the plug-in coupling 38b in such a way that the dust extraction line section 29 is opened and the spray suction section 28 is closed.
• the suction machine 25 is arranged on one side of the cabinet-shaped base 7, here on the right side, and the water separator 31 is arranged on the other side of the base 7, both of the aforementioned parts of the base 7 are carried and are connected to each other by a suction line part 41.
• the suction line part 41 is formed by a suction line pipe 43 which is arranged on a top wall 42 of the substructure 7 and which is a flat, preferably rectangular Has cross-sectional shape and can be L-shaped in plan view and thus consists of a suction line pipe section 43a extending transversely to the substructure 7 and a suction line pipe section 43b extending from its one end, here the left end, in the longitudinal direction of the substructure. The latter preferably extends to the rear.
• a further suction line pipe section 43c can be arranged laterally, which in the present exemplary embodiment preferably extends for constructional reasons, so that the suction line pipe 43 has a Z shape in plan view.
• a further suction pipe section 43d extends from the suction pipe section 43a in accordance with the cross-sectional shape, so that a T-shaped suction pipe body is obtained, which is preferably made of plastic. While the cavity of the suction pipe section 43c communicates with the cavities of the suction pipe sections 43a and 43b, the cavity of the suction pipe section 43d is separated by a partition 44 (FIG. 4) from the cavity of the L- and Z-shaped suction pipe 43.
• the suction pipe ear sections 43b, 43d are in a position projecting laterally beyond the base 7. In the lower area of the base 7, a laterally projecting support leg 45 is provided, which extends horizontally.
• the water separator 31 is arranged in a water collecting container 33 which is of such a narrow construction and of such a height that it fits between the support leg 45 and the suction line pipe sections 43b, 43c, laterally from the adjacent side wall 46 of the substructure 7 can be supported.
• the suction mouth 15, which can be optionally connected to the suction system 24 in a manner to be described, is preferably mounted on the outer end of a horizontal swivel arm 48 (FIG. 1) so that it can swivel about a vertical swivel axis in an associated bearing, the inner end of the swivel arm 48 being connected by a joint vertical pivot axis is connected to the base 7.
• the joint is located on the top of the base 7, preferably in a central position.
• the suction mouth 15 is formed by an angular housing 51 with an end suction opening 52 on the horizontal leg of the angular shape, while in the lower region of the vertical housing leg on the side facing the dental device 6 there is a connecting piece 53 which is connected to the device by a flexible suction hose 47 Suction line part 41 is connected.
• the flow paths extending through the suction line part 41 between the suction machine 25 and the spray suction device 20 and the suction mouth 15 are described below.
• a suction unit 54 is arranged in a box-shaped suction unit housing 55, to which a lateral free space (not shown) of corresponding size is assigned in the base 7, so that the suction unit 54 can be inserted and fastened in the base 7 in the sense of a suction cartridge is what a flange 55a on the housing 55 and this fastening screws can serve.
• the suction machine 25 the dust separator 34, the filter 35, in particular carbon filters for HG and MMA (mercury and methyl methacrylate vapors), preferably in the form of an upright, narrow filter bag, a vertical wall 56 as a cover and an outer cover plate 58 are arranged.
• the suction line part 41 To connect the suction line part 41 to the suction unit 54 through a flexible suction hose 59 only shown in FIG. 5, with the flexible suction hose 47 of the suction mouth 15, with the liquid collecting container 33 and with the flexible hose 18 of the suction pipe 19, the suction line part 41 has five connection openings 61 to 65.
• the first connection opening 61 is arranged on the underside of the right end region of the suction line pipe section 43a or on the underside of the suction line pipe section 43c and is preferably formed by a downwardly projecting connecting piece 66 (FIG. 5) which covers the top wall 42 of the cabinet-shaped substructure 7 in one Hole 42a penetrated downward, the suction hose 59 is connected to the connecting piece 66 by a plug connection 67, a clamp connection or a bayonet lock.
• the second connection opening 62 is located at the top of the right end region of the suction line part 41, preferably opposite the connecting piece 66. It is preferably formed by a plug connection 68 or socket, into which the associated end of the flexible suction hose 47 can optionally be inserted with a corresponding end piece 47a, the flexible hose 47 passing through the cavity 69 of the suction line part 41 forming a suction line section such that it in the inserted position is only connected to the first connection opening 61 or the connecting piece 66 and closes the cavity 69, so that in the inserted position there is a flow passage A only between the flexible hose 47 and the connecting piece 66 or the suction hose 59. With the suction hose pulled out of the socket 68 1
• the passage B from the cavity 69 to the suction hose 59 is open, a closure flap 71 being pivotally mounted on the suction line part 41 in a joint 72 for closing the second connection opening 62, which in its folded-down closed position closes and seals the second connection opening 62.
• connection openings 63 and 64 for connection to the collecting container 33 are each provided on the underside in the region of the suction line pipe sections 43b, 43d (FIG. 4), and they are aligned with connecting openings 63a, 64a arranged on the upper side of the collecting container 33.
• pressurization which preferably acts on the suction air part 41 and elastically prestresses the latter against the upper side of the collecting container 33.
• the assembly and disassembly of the collecting container 33 can be facilitated and improved in that the end of the preferably rigid suction line part 41 facing the collecting container 33 is arranged to be vertically flexible.
• the suction line part 41 is preferably mounted so that it is slightly resilient or tiltable at its end facing away from the collecting container 33, so that its end facing the collecting container 33 can be raised or tilted slightly and is acted upon by the aforementioned spring force.
• This bias is formed in the present embodiment by a compression spring 73, which is supported on a vertical bolt 74 upward and presses with its lower end against the suction air part 41 and acts on it elastically downward.
• the through hole for the bolt 74 is preferably located in a recess 75 or material accumulation which tightly connects the associated top wall and bottom wall of the suction air part 41, so that the bolt 74 does not penetrate the cavity 69 of the suction line part 41 and there are no sealing problems.
• a positive connection between the suction air part 41 and the collecting container 33 in its fitting position which prevents a horizontal displacement of the collecting container 33 and thus an unintentional release of the connection.
• a form-fitting connection can be formed by stop parts 77, 78 which are opposite or surround the connection openings 63, 64 or 63a, 64a and which in the fitting position preferably hold the collecting container 33 in two directions at right angles to one another center.
• detent 79 located here on one side of the connecting holes, here on the underside of the suction line part 41, is preferably provided on both sides with inclined contact surfaces which enable the suction line part 41 to be overpressed by horizontally displacing the collecting container 33.
• connection openings 63a, 64a are each arranged in a downward or upward projection of the suction line part 41 or collecting container 33, so that between the projections 82, 83 upper and lower recesses 84, 85 on the underside of the suction line part 41 and are provided on the top of the water tank 33.
• This configuration makes it possible to use the water container 33 in a position that is laterally offset with respect to its fitting position between the suction line part 41 and the support leg 45, preferably up to the side wall 46 (see movement arrow 86) and then in the longitudinal direction, here along the side wall 46 into the To shift the fitting position.
• the disassembly of the collecting container 33 takes place in the opposite direction.
• connection piece 6 which is preferably injection-molded in one piece, is held tiltably in the hole 42.
• rings 66a made of elastic material can be arranged on and / or below the edge of the hole, which are slightly compressed by a nut 66b screwed onto the connecting piece 66.
• connection opening 65 for the flexible hose 18 of the spray extractor 17 can likewise be arranged on the underside of the suction line pipe section 43c and in the present embodiment is arranged on the front end of the suction line pipe section 43d.
• the flexible hose 18 is preferably detachably connected to this connection opening 65 by a screw or plug-in socket.
• the suction air flows from the spray extractor 20 (with water or spray) into the suction line pipe section 43d, through the front connection opening pair 64, 64a into the collecting container 33, through a vertical water separator pipe 87, which extends from the connection opening 63a into the collecting container 33, into the suction air pipe 43 and through the suction hose 59 and via the suction machine 25 to the discharge line 36.
• a horizontal cover plate 88 is provided, which can be placed on the substructure 7 or on the suction line part 41 and is held by suitable fastening means.
• a hole 91 in the cover plate 88 which enables the suction hose to be connected.
• the above-described mounting of the collecting container 33 enables easy installation and removal, e.g. for emptying.
• a small construction of the device 6 and a large volume for the collecting container 33 can be realized due to the lateral sinking of the collecting container 33, since this can extend over the entire side surface of the substructure 7.
• a further safety device with a contact switch and a contact element (not shown) which is acted upon by the collecting container 33 in its mounting position and which also provides an optical, acoustic or electrical indication when the collecting container 33 is not or incorrectly installed, preferably prevents the suction machine 25 from running.
• the existing electrical control device is preferably also integrated in particular in the upper region of the lower part 7.
• Actuating elements 93 for electrical control are provided on the front of the substructure 7, or cabinet, preferably on the top wall 42 thereof.
• a foot switch 94 is also provided, for example for switching on non-illustrated electrically or pneumatically drivable processing tools which are assigned to the dental device 2 or for switching on dental treatment instruments. 10
• FIG. 6 in which the same or comparable parts are provided with the same reference numerals, differs from the above-described embodiments in that it does not consist of two separate, combinable devices 2, 6, but as a preferably fixed unit is trained.
• a holding device 95 for dental treatment instruments 96 connected to supply hoses which is also present in the embodiment according to FIG. 1 and which can preferably be horizontally rotatably mounted on a horizontal swivel arm 97 and has a tray-shaped supporting surface for treatment tools on the upper side.
• the horizontal swivel arm 97 can be designed and mounted in accordance with the above-described horizontal swivel arm 48.
• the holding device 95 can be present in addition to or instead of a previously described dust extraction device 14 with a suction mouth 15 carried by the swivel arm 48.
• the holding device 95 is pivoted into a rear parking position under the worktop 4, since it is not required.
• the horizontal pivot arms 48, 97 can be pivoted one above the other.
• a work table top 4 is provided which is supported on its base 7 at its end facing the dental device 6, e.g. by means of a support column or bracket 98.
• the other end of the worktop 4 is supported on the floor by a preferably columnar table leg 99.
• the worktop 4 in the area of the holding device 95 can be recessed from the front, so that there is an angular shape for the worktop 4.
• a further embodiment variant for a teaching and exercise device 1 is described below with reference to FIG. 7, in which the same or comparable parts are also provided with the same reference numerals.
• This embodiment variant is implemented in all of the above-described exemplary embodiments.
• the existing carrier 101 for the phantom head 8 or the phantom bust 9 is vertically adjustable and can be fixed in the respective height position on the dental device 6.
• a vertical support column 102 which is preferably square in cross section, is used for this purpose, which is mounted on or in a vertical guide 103 of the substructure 7 so as to be vertically displaceable and thereby held in a non-rotating manner.
• a vertical guide recess with a cross-sectional shape and size corresponding to the support column 102 is provided, in which the support column 102 is vertically displaceably mounted.
• a vertical threaded spindle 104 which is rotatably mounted in the support column 102 and which projects through the upper closed end of the support column 102 in a hole and is connected or connectable in a rotationally fixed manner to a crank 104a, is used for vertical displacement.
• a spindle nut 105 which is fastened to the substructure 7 and into which the threaded spindle 104 is screwed, is arranged in the hollow support column 102 or below it.
• the threaded spindle 104 is rotatably supported in the support column 102 but is not displaceable in its longitudinal direction, so that by screwing in or unscrewing the threaded spindle 104 the support column 102 is moved vertically with the threaded spindle 104 and can thus be adapted to the desired working height.
• the phantom head 8 or the phantom bust 9 on the support 101 formed by a horizontal support arm 106 or a horizontal propeller shaft can preferably be swiveled up and down in the center on the front of the lower part 7 and in the respective swivel or Working position can be locked.
• the dental device according to FIG. 7 can be an independent single device or also a device combined with a dental technical device 2.

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• Engineering & Computer Science (AREA)
• General Physics & Mathematics (AREA)
• Health & Medical Sciences (AREA)
• Physics & Mathematics (AREA)
• Algebra (AREA)
• Mathematical Analysis (AREA)
• General Health & Medical Sciences (AREA)
• Medical Informatics (AREA)
• Medicinal Chemistry (AREA)
• Public Health (AREA)
• Oral & Maxillofacial Surgery (AREA)
• Computational Mathematics (AREA)
• Epidemiology (AREA)
• Chemical & Material Sciences (AREA)
• Mathematical Optimization (AREA)
• Mathematical Physics (AREA)
• Pure & Applied Mathematics (AREA)
• Business, Economics & Management (AREA)
• Educational Administration (AREA)
• Educational Technology (AREA)
• Theoretical Computer Science (AREA)
• Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
• Instructional Devices (AREA)

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• 1992
  • 1992-02-11 DE DE4203958A patent/DE4203958C1/de not_active Expired - Fee Related
• 1993
  • 1993-01-21 CZ CZ932131A patent/CZ213193A3/cs unknown
  • 1993-01-21 JP JP5513703A patent/JP2616884B2/ja not_active Expired - Lifetime
  • 1993-01-21 DE DE59306313T patent/DE59306313D1/de not_active Expired - Fee Related
  • 1993-01-21 EP EP93902239A patent/EP0579801B1/de not_active Expired - Lifetime
  • 1993-01-21 WO PCT/EP1993/000134 patent/WO1993016458A1/de not_active Ceased
  • 1993-01-21 US US08/129,146 patent/US5433613A/en not_active Expired - Fee Related

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