DE1938399A1 - Handle for dental or surgical hand drills - Google Patents

Description

MICRO-MEGA S.A. BESANCON / France

Handle piece for dental or surgical hand drills

The invention relates to an improvement and further development of a handle piece for dental or surgical hand drills, which can be locked onto the extended shaft of a micromotor and has a sleeve-like, the micromotor at least partially encircling the extension

has according to patent, (patent application P 17 66 056. 9) to

as a result, direct contact of the user of such a hand drill when placing the handle with the motor Avoid, since such motors can only be sterilized very incompletely, so that there is a risk of sepsis.

Here, according to one embodiment, the main patent is in this Extension provided a radially inwardly directed pin which, when the handle is axially rotated, one of a The leaf spring on the motor part pushes further pin inwards, which is pressed into an inner annular groove of the handle, whereby the lock is resolved.

009838/1310

Although this embodiment easily fulfills its purpose, in particular preserving the sterility of the handle, the embodiment of the main patent is still somewhat complicated, since ^: a small mechanism must be provided to ensure the locking and unlocking of the handle on the motor shaft.

The purpose of improvement and further training is to simplify the construction effort, but without this adversely affect the purpose of the invention.

For this purpose, the handle is according to the patent. . . . (Patent application P 17 66 056.9) characterized in a further embodiment of the invention by means of a sleeve made of a deformable material that can be placed on the handle and extends backwards over the micromotor enough. This sleeve can consist of a suitable rubber material in a simple and expedient manner.

In order not to hinder through this patch sleeve the admission of cooling air to the micro-motor, the micromotor enclosing portion of the sleeve advantageously a larger inner diameter ^1, as is the outer diameter of the motor.

This inside diameter of the micromotor enclosing Sleeve section is dimensioned so that de ssen inner wall rests directly on the unlocking pin, but without pressure to exercise on this *

In the accompanying drawing is an exemplary embodiment the improvement according to the invention in part Longitudinal section shown. .

009838/1310

1,383,9

According to this, the handle is 1, welpties /, straight or angled. may be formed, in at §ich hekannter Wßise demand rearwardly with a sleeve 2 extended, i provided whose directional after Mptpr 3 end with a Innennut.4 _s st. Pies ρ sleeve is lockable on an elongated shaft 5 dps lyiikrpm.P.tprs 3, as it is also known per se.

P, a§ extended Wi ³ II-WiP !! ⁶ 5 t ^ S-gt in an annular groove, at its end 4 ^ß n PJP-gfPfPS-i & Pi? · T ^e J4 6 eijier · βϊ-3-ttfeder 7, which is in a longitudinal groove of the extended shaft § .a-iH- gPPpd ^ t igt · Pipse leaf spring 7 carries ginpn ^ apfe.n 8, which ^ .n ^ ej? 4 ?? ϊϊ el ^^ tisp ^ l ⁶ ^ P? ^ Pk of the leaf spring in the mentioned p.ingj3 * j £ 4 Üß ¥ Q ^ iffstü.pkhülse 2 engages μη4 here the Qriffs.tu.ck on 4er Yerlätigerten ^ IptQrwpUe 5 holds?

Pie piattfe ^ er. 7- does W 9ri-ßMH ⁿ g 4ß? MPta? ^s 3 is extended and lies in the white shown with; lii ^ epi outer, free En4, e in the area of action of a test button 9, which is firmly attached to the micromptpr 3. purph pushing in this Pruckknppfes 9 wir4 the leaf spring 7 9-Hf 4 ^e ii Pfidßp 4 ^he mentioned longitudinal groove pressed, Wflthrough 4 ^he - Za-Bi ⁶ B § 3-bg ^e lowers: wi? 4 ^ U the handle 1 of 4er extended Motptwelle 5 can be deducted.

TJm to reduce, 4th ace. EiTi user when attaching a piece or when using the handpiece with a non-sterilized MRtPr 3 in contact with the rear end 2 4es handle - gjtückes 1 n ^ with a sleeve made of rubber pd.4gl · provided ^ the rear Section 11 has a larger inner diameter than the Αυ.8 3.βη4μ £ ρ} ιΐΒΡ3 36ϊ: 4 ^es MPtpys 3, In this way a sufficient gap between the inner wall and the outer circumference of the J4ptprs 3 is maintained, sp 4ass one-p suit of cooling air can penetrate into this room, on the other hand, no pressure 4es Hülsenabsphni} .tes 11 is exerted on the mentioned pressure "" knp θ, ρ Q g | | | f \ j ^ Q "* 'i '

To pull off the handle, it is sufficient to apply pressure from the outside on the cover made of deformable material at the point where the push button is located 9 is located, which is printed inwards in this way ■ and enables the handle to be pulled off.

Of course, it is possible to use the sterilizable sheath 11, which can be removed and used from case to case with different handle pieces, also made of a different material than the rubber mentioned to produce if such a material has the same or similar properties. It is also possible to take this sleeve off deformable material from the outset firmly to be arranged on the handle, and then sterilized together with the handle can be.

00 98 38/1310

Claims (4)

-S- PATENT CLAIMS (lJ handle for dental or surgical hand drills, which can be locked onto the elongated shaft of a micromotor and at its rear end a sleeve-like, the Micromotor has at least partially encompassing the chlies extension according to the patent (patent application P 17 66 056.9), characterized by a piece on the handle (1,2) attachable sleeve (10,11) made of a deformable material, which backwards to over the micromotor (3) is enough. 2. Handle piece according to claim 1, characterized by a sleeve (10, 11) made of rubber, 3. Handle according to claim 1, characterized by a sleeve (10, 11), whose section (11) encompassing the micromotor (3) has a larger inner diameter than the cooling air admission Outside diameter of the motor. 4. Handle piece according to claim 1, characterized by a direct support of the inner wall of the micromotor (3) to send chlies Sleeve section (11) on the unlocking pushbutton (9) without exerting any pressure on it. 009838/1310 Blank page