DE8436539U1 - Test device for a dental percussion instrument - Google Patents

Description

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Siemens Aktiengesellschaft Our mark Berlin and Munich VPA 84 P 3 5 t 1 DE

Test device for a dental percussion instrument

The invention relates to a test device for a dental percussion instrument, which has a contains movably mounted plunger, which with the help of a preferably magnetic drive and a The electronics that control the drive accelerate to a defined speed and then in free flight Moved towards a measurement object at a constant speed and after the end of the ram has hit the Object is returned to its starting position by means of the drive.

Such a percussion instrument with which preferably the degree of loosening of teeth in the human tooth-holding apparatus can be determined, for example in DE-32 15 530 described.

When using such instruments it can happen that due to a defect in the instrument or in the Electronics incorrect measurements are carried out without these being recognized as such by the user.

With the test device specified in claim 1, the function of the complete percussion device can be performed The actual measurement is tested on the patient and any defects in the instrument or electronics can be easily ascertained.

Rp 2 KIi / 11/30/1984

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Advantageous refinements and developments are contained in the subclaims. Several forms of execution the test device according to the invention are explained in more detail below with reference to the drawing. Show it:

Figure 1 shows a simple embodiment of the invention Test device,

Figures 2 and 3 two different variants of one

Test device,

ι. FIG. 4 shows a part of that shown in FIG

'' Test device,
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FIG. 5 a further variant of a test device.

Figure 1 shows the test device according to the invention

_ tion in a simple design. The test device

20 is intended for a percussion instrument denoted by 1 in the figure, the structure of which is described in German patent application P 32 15 530. The instrument isO horizontally in a direction indicated by holding 2 ^f tion clamped so that the Stös- for a test operation

existing 3 can come to rest on a vertical surface 4 of a test body 5. The test body 5 has in Relation to a solid support 6 connected to it a certain elasticity, that of the to be tested Test object, in the present case the elasticity of a tooth anchored in a healthy tooth bed. The test body 5 thus has defined constant elasto-mechanical properties that correspond to those of a healthy tooth in its dental bed - this elasticity is achieved in the embodiment shown in that a generally designated 7 cuboid

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shaped base body made of hard rubber, hard fabric or another suitable material in the front area facing the instrument 1 with a transverse slot 8 is provided of the body in a solid (rigid) body section 6 and one opposite resilient body section 5 divided. Around To achieve a certain damping of the body portion 5, the slot 8 is advantageously with a suitable damping material made of soft rubber, foam or the like. In the embodiment shown form test body 5 and carrier 6 together with the instrument holder 2 a structural unit. Although this is advantageous, it is not absolutely necessary, as e.g. Figure 2 shows.

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The elasto-Eiechanisch arranged test body can be designed and arranged in various ways. In the embodiment of Figure 2, the test body is a resilient tongue 10, which by partially punching out a defined area of a horizontal wall 11 a housing 12 is formed, the above-mentioned elastic compared to the other housing surfaces Has properties. It is useful to use the resilient To provide tongue 10 with a marking 13 to which the plunger tip of the instrument 1 for the test process can be created.

It is particularly advantageous to use the test body in the exemplary embodiment according to Figure 2 so the resilient tongue 10 to be integrated into the housing 12, in which the Control and evaluation electronics for the instrument and a display 14 showing the test values are provided. The test measurements can be read on the display and with certain values that determine the device function to be checked.

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Instead of partially punching out a specific housing area, it is also possible to use a specific location of the housing has a surface with a material weakening that is the same as that of the other housing parts or thickening of the material should be provided. This area must then also have the properties mentioned above exhibit.

Figure 3 shows another embodiment of a Test device which, similar to FIG. 1, has an instrument holder. It also has this test device has a large number of test bodies which can be adjusted to different values. the The instrument holder is integrated into the housing 15 here and as a sleeve-shaped, longitudinally slit part 16 formed by the instrument 1 can be inserted for a horizontal holder. Across the The receiving opening 17 for the instrument is a part 19 provided with a scale 18, which is shown in FIG is shown in full, rotatably mounted. The part 19 consists of a thin sleeve that is on one The end is open and the circumference is several, different long resilient tongues 20 and at the other end, which is closed at the front, the scale with the tongues 20 assigned, contains markings corresponding to certain test values. By turning the sleeve 19 can so individual test values can be set, which then, if the instrument and the electronics are working properly function, must be shown on the display 22, as shown, for example, in FIG is.

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Instead of the sleeve, a longitudinally displaceable support part with several differently resilient ones can also be used Tongues may be provided.

FIG. 5 shows a further advantageous variant a test device. In this embodiment is the test device is part of an attachable to the instrument 1 and in the attached state that Plunger end protective surrounding cap 25. Inside the sleeve-shaped cap is a body 26 with one of the Test object, in the present application a tooth, corresponding mass in an elastic holder 27 embedded. As already explained in the exemplary embodiments shown above, the holder 27 has attenuation and Spring properties.

15 claims
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Claims (1)

- 6 - VPA 84 P 3 5 1 1 OE - Proposals 1. Test device for a dental percussion instrument (l), which contains a movably mounted plunger, which with the help of a preferably magnetic Drive and one controlling the drive Electronics accelerated to a defined speed, then in free flight at a constant speed ■ Moving speed towards an object to be measured and after Impact of the ram end (3) on the measuring object by means of the drive back into its starting position. is provided, marked by an external to the instrument (l) arranged, a contact surface (4) for the plunger end (3) having test body (5, 10, 20), which due to its Formation and / or arrangement on a carrier (6, 11, 19) of the measurement object corresponding elasto-mechanical properties owns. 2. Test device according to claim 1, characterized in that the test body (5, 10, 20) is part of the carrier (6, 11, 19). 3. Test device according to claim 2, characterized in that the test body (5) is formed by a slot (8) in a solid body (7) made of solid material. k. Test device according to claim 3, characterized in that the slot (8) is filled with damping material. ₍₁ «Te · · - 7 - VPA 8 ** P 3 5 1 1 QE 5. Test device according to claim 2, characterized in that the test body (10) by one in a defined surface section in a housing wall (II) of a carrier forming the carrier Housing (12) provided material weakening or thickening is formed. 6. Test device according to claim 2, characterized characterized in that the test body is formed by a resilient tongue (10). 7. Test device according to claim 6, characterized in that the resilient Tongue (10) is formed by a partial punching in a housing (12) forming the carrier. 8. Test device according to claim 5 or 7, characterized in that the housing (12) receives the evaluation electronics for the instrument and a display (lh). 9. Test device according to one of claims 1 to 8, characterized in that the test body (5, 20) is arranged on a holder (2, 16) for the instrument (l) which is designed or arranged so that the instrument horizontally and the plunger end (3) of the instrument (l) is aligned with a vertical contact surface (k) of the test body (5, 20), 10. Test device according to one of claims 1 to 9, characterized in that several test bodies (20) with different elastomechanical properties on a common carrier (19) are arranged. ^ ,, ^. αι. η OCH Π0 - es - vrA oil Γ JJlI U ** 11. Test device according to claim 10, characterized
characterized in that the carrier (19)
recorded test body (20) are arranged adjustably in such a way that they each rest on the plunger end (3) of the instrument (l) held by the holder (l6) Let P align. | 12. Test device according to claim 11, d a d u r c h ■ marked. that as a carrier a * rotatable sleeve (19) is provided which at one end | a plurality of different lengths by longitudinal, i slots formed tongues (20) and at the other end of the \ tongues (20) associated with defined measured values corresponding markings (18) on the periphery. f 13. Test device according to claim 12, characterized
characterized in that the sleeve (± 1)) transversely
to a sleeve-shaped holder (l6) for the instru- ment is arranged. * \ 14. A test device according to claim 1, dadu ~ PCH in that it is part \ an attachable on the instrument (l) cap (25). 15. Test device according to claim 14, characterized
characterized in that the cap (25) so
is designed so that it can be plugged onto the end of the instrument (1) having the end of the plunger, with the inside of the cap in the plugged-on state arranged by means of a suitable carrier material (27) Test body (26) correspondingly opposite the end of the plunger.