DE7708027U - Device for the parallel insertion of guide pins into dental working models - Google Patents

Description

7132 German

GERMAN GOLD AND SILVER SCHEIDEANSTALT FORMERLY ROESSLER 6000 Frankfurt / Main 1, Weißfrauenstrasse 9

Device for the parallel insertion of guide pins in dental work models.

object the I *
III I
t ti: Il · ·
Il · ·
! ItI t
Tl t
:: (* to the έ parallel 0 - 3 - Innovation is one contraption

Insertion of guide pins in dental working models for the production of removable parts from them Arbeitsmoclellen, essentially consisting of a carrier for guiding the lowerable spindles carrying the ParallelfUhrungsgeräte and work tables for fixing the impressions.

Dental prosthesis work is made on working models that are obtained by placing it in the patient's mouth The impression taken is poured with a plastic, self-hardening model compound, e.g. hard plaster or plastic. For many For dental work it is advantageous if the working model does not consist of one piece; rather, modeling and adapting the individual construction elements of a dental prosthesis is made easier in most cases if that the relevant part of the working model - e.g. the tooth stump - is removable.

With today's technology, they are used to fix the position of the individual parts of the model pins made of metal or plastic, which twist the respective part of the model impede.

Each pen is inserted individually by hand into the impression, which is partially filled with modeling material, or the pens are pre-filled the partial filling of the impression is suspended in it and individually fixed with auxiliary wires. These procedures are time consuming, imprecise and allow parallel alignment of the individual model pins do not interfere with each other, so that the pins often diverging and / or converging or too high

.- It _

or are too deep in the impression, so that difficulties arise in the manufacture of the dental prosthesis.

Ee is also ready »known the guide pins in more detail Relative position by releasably connected to the guide pins To fix the holder, the holder on a common Γrager displaceable and can be determined in a certain position relative to the dental impression.

There is also a device known in which a horizontal base plate a vertical column is arranged with an arm, at the end of which is a displaceable in the vertical direction Spindle is used, which in turn serves as a support for a holding member of pins, their position in a plane is adjustable perpendicular to the direction of movement of the spindle. This means that one or more pens can be inserted into the working model in parallel use, whereby these are clearly defined during the hardening process of the model material.

Despite these previously known tools for fixing the guide pins, this operation is still time-consuming and laborious. It was therefore the object of the present innovation to create a device with the help of which it is possible to insert guide pins quickly and precisely into dental work models.

This object has been achieved in that one uses a device which essentially consists of a carrier with arms for There is guidance of the spindles and work tables carrying the parallel guidance devices for fastening the imprints, with According to the innovation, the carrier consists of a central column with three arms, which is attached centrally to a turntable,

77βββ27 i4.IT.tf

who also carries the work tables, with each support arm one Work table is assigned, and vertically lowerable spindles in the support arms for receiving the parallel guidance devices are used.

In Figures I to III an example embodiment of the innovation according to the device is shown schematically, whereby

Figure I a side view of the device Figure II a top view of the device and Figure III is a top view of a parallel guide device

show.

öie device consists of a turntable (l), which is on a fixed base (2) is rotatably mounted. On this turntable (l) a carrier (3) is attached, composed of one Center column (4) and three arms (5). By means of built-in locking springs the turntable (1) can be in fixed positions on the base (2) be fixed. Due to the rotatability of the turntable (l) and the three arms (5), up to three working models can be individually and can be manufactured efficiently from a single point of view with a small footprint. There is one in each of the arms (5) Vertically lowerable, non-rotatable spindle (6) used to hold parallel guidance devices (7). The three spindles (6) are provided with a groove parallel to the longitudinal axis to accommodate a guide in order to prevent rotation. One The locking screw (8) enables the spindles (6) to be individually fixed in height. Above the arms (5), the spindles are

7768Q27

your (6) each from a ring (9) with locking screw (lO) includes as an adjustable height stop. The compression spring (12) located between the ring (9) and the spindle button (ll) presses when the ring (9) is released, it always against the carrier arm (5). which facilitates the precise fixing of the sinking depth. Moreover thereby the spindle (6) with the parallel guide device (7) guided upwards, whereby the turntable (l) is released for setting up new models.

A permanent electromagnet combination is built into the turntable (1) in the center of each spindle (6). These magnets have the Task, the work tables (13) in a desired position hold and exclude a shift on the turntable (l) The power of the permanent magnet is sufficient for this. Around the work tables (13) without force from the permanent magnet of the turntable (l) To be able to remove, it is sufficient to switch on an electromagnet with the opposite polarity to that of the permanent magnet. This will the magnetic field is neutralized and the work tables (13) are each exposed individually.

The work tables (13) are provided with a ball joint (14), that allows the tables (13) to pivot in all directions. The work tables (13) can be adjusted using the locking screws (15) lock in any desired position. The work tables (13) have a magnetic holder (l6) with guides for attachment of the impression tray for the working models.

Each parallel guide device (7) on the working side of the spindles (6) consists of a centrally attached, horseshoe-shaped one Holding fork (17.) with several bores (18) for receiving and fastening the horizontally and radially displaceable model pen carrier (19). Have this model pen carrier (19)

it; , .I t

' AO

for this purpose a Sohlitzlooh (20) and can be fixed by means of knurled screws (21). The carriers (19) should easily pick up, hold and release the model pins. You own too therefore thin flexible leaf springs for this purpose.

Prankfurt / Main, March 7, 1977 Dr.Br.-Bi

7708027 I4.er.77

Claims (6)

PROTECTIVE CLAIMS 1. Device for the parallel introduction of guide pins in dental work models, essentially consisting of a carrier with arms for guiding the spindles and work tables carrying the parallel guide devices for fastening the work models. that the carrier (3) consists of a central column (k) with three arms (5), which is fastened centrally on a turntable (l) which also supports the work tables (13), where each carrier arm (5) has a work table (13 ) is assigned, and vertically lowerable spindles (6) for receiving the Para1IeIführungsgeräte (7) are used in the support arms (5). 2. Apparatus according to claim 1, characterized in that the turntable (l) is attached to a solid base (2) and fixed on Jieser by means of springs for precise position adjustment. 3. Device according to claims 1 and 2, dadur ch marked z eichnet that the spindles (6) provided with grooves and with compression springs (12) and locking screws (1O) are equipped for precise height adjustment. k. Device according to Claims 1 to 3, characterized in that the parallel guide device (7) consists of a horseshoe-shaped holding fork (17) with bores (18) in which the horizontally and radially displaceable model pin carriers (19) provided with a slotted hole (20) are attached. 5. Device according to claims 1 to k _t, characterized in that the worktables (13) witteis magnets fixed on the turntable (l), pivotable in all directions by a ball joint (l't) and can be fixed by a screw (15) . 6. Device according to claims 1 to 5, characterized t. that the work tables (13) carry a magnetically held mounting plate (16) for the prints. 7708027 1487.77