DE8024336U1 - Cutters for bone surgery purposes - Google Patents

Description

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Dipl.-Ing. H. MITSOHERLIÖW D-flöOö MÖNCHEN

Dipl.-Ing. K, GUNSC3HMANN SteirisdöffstrdßeiÖ

Dr.rrfldt. W. KÖRBER "® ^m) ' ^i966U Dipl.-Ing.J.SdHMlDT'EVERS

PAtEaNTAN WALTE Io, Septembe

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Dr ₁ rried, dent, Guido Riess
Marienp'latz 7

8loo Garmisch-Partenkirchen

Cutters for bone surgery purposes

The invention relates to a milling cutter for bone surgery that can be inserted into the chuck of a hand-held drive device Purposes, especially in dentistry, consisting of a chuck body that can be inserted into the chuck and from this in the direction of the axis of rotation of the Cutter's protruding cutter body.

Milling tools are used in bone surgery Creation of openings and spaces in the bone, especially when creating implantation spaces, special importance to. Particularly in the case of dental implantology, which is developing like a sprung, is for the preparation the implantation spaces in the jaw require special care. Which are generally very small The spaces to be created must be precisely adapted to the shape of the implant be. The implantation to be created in the bone

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space must therefore be precisely defined and none are allowed unwanted tissue destruction occurs.

The invention creates a milling cutter * that makes these packages optimally taken into account, PUr * a milling cutter of the initially mentioned type it is proposed that the Frä'skb'rper as a triangular * towards its free front end slightly tapered column is formed.

^ O Appropriate configurations of the milling machine are in the subclaims marked. The internal cooling prevents bone necrosis. Experience has shown that with a Such milling machines can be operated at speeds of at least 800 rpm. The length of the cutter body column should be

According to previous experience, the ^{ZD should not exceed 3 mm.}

Histologically it was proven in a comparative test that

for implantations, the implantation spaces with a

Milling according to the invention were prepared, a faster, more pain-free and infection-preventing Bone healing is given.

The advantage of this three-edge milling machine lies in the relatively little heating of the bone tissue * as each only move scraping edges on the bone bed, which create a knife effect with greater rotation. Further this milling cutter allows an exact processing of the bone * opens the cancellous bone spaces (bone pores) in which the bone-forming cells and vessels are and allowed working with low work pressure. With osteotomy | there is only a small sacrifice of bone substance.

For example, useful configurations of the milling machine Are in the following based on the accompanying drawings explained in more detail, it show

f> Figure 1 in side view, partially in section

a first embodiment

Figure 2 is a sectional view along the line

H-II in Figure 1
10

Figure 3 is a side view partially in section

a second embodiment

FIG. 4 shows a sectional view along the line IV-IV in FIG.

The cutter consists of a cutter body 1, which is in a Chuck body 2 is inserted, namely a base part 3 of the milling body 1 is firmly seated in a receptacle 4 within of the chuck body 2. From the base part 3 of the milling body 1 protrudes as the actual tool body triangular column 5 which tapers slightly towards its free front end. The base part 3 has (25 several liquid grooves 6 on its circumference, which open out on the one hand at the foot of the column 5 and on the other hand open out in the receptacle 4 of the chuck body 2, in which receptacle 4 also has a central cooling liquid

Keitskanal 7 opens out in the chuck body 2. 30th

The embodiment of Figures 3 and 4 is not

described separately. Identically acting and functionally identical parts are given the same reference numerals as in

the embodiment according to Figure 1 ^ and Z denotes. 35

The PateatanwaJt

Claims (4)

Dipi.-ing. H. MITSCHERLICH ·.,. p-8000 MDNCHuN Dip!, - Ing- K. GUNSCHMANN Steinsdorfst _r q | 3e Dr, rer. not, W, KÖRBER ® ⁽⁰⁸⁹ >" ^{29 66B4} Dip !, - Ing, J. SCHMIDT-EVERS Patent attorneys lo. September 198o Dr Ko / je - I. - Dr. med. dent. Guido Riess
Marienplatz 7 81oo Garmisch-Partenkirchen PROTECTION APPROACH jj 1. Milling cutter that can be inserted into the chuck of a hand-held drive device for bone surgery purposes, in particular in dentistry, consisting of a chuck body that can be inserted into the chuck and the milling body protruding from this in the direction of the axis of rotation of the milling cutter, characterized in that the milling body ( ) (1) is designed as a triangular column (5) that tapers slightly towards its free front end. 2. Milling cutter according to claim 1, characterized in that the free front end of the column (5) is pointed. -2- 3, milling cutter according to claim 1 or 2, characterized in that the chuck body (2) and milling body (1) are in two pieces are formed, wherein the milling body (1) with a base part (3) firmly in a receptacle (4) inside of the chuck body (2) is inserted. 4. Milling cutter according to claim 3, characterized in that the chuck body (2) has one in its axis of rotation lying cooling fluid channel (7), which is in the The receptacle (4) opens out and has at least one cooling liquid groove arranged on the circumference of the milling body base part (3) (6) is in connection, which opens out at the foot of the milling body column (5). t. t III .... f I 11 (111 I I ' ι ι ι ι ι r t> <i Il f ItIIf I Il ι ι ι ι ι ι ι ι ι ι I II III «I If <l ■