SU1255114A1 - Apparatus for osseous operations - Google Patents

Description

eleven

The invention relates to medicine, namely to traumatology.

The purpose of the invention is to prevent spinal cord injury.

Figure 1 shows a device for bone operations, front view; figure 2 is a view of And figure 1; on fig.Z - knife axonometry; figure 4 - the casing of the knife; FIG. 5 is a cutting scheme for transferring forces to the work branch | FIG. 6b shows a cutting scheme for transferring the force to the support branch; figure 7 - scheme of remittance in the transmission of force on both

bevshi

The device for bone operations contains two pivotally connected spring-loaded branches 1 and 2 with removable working jaws. The working sponge of the branch 1 is provided on the end surface with two teeth 3 with cutting edges 4 and inclined grooves 5 displaced one relative to the other. The working sponge branches 2 is provided with a support stand 6 with an emphasis 7. The working sponge branches 1 can be equipped with a removable casing 8.

The device is used as follows.

Before performing the dissection of soft tissues in the region of the operated and adjacent vertebrae, skeletization of their arches and spinous processes, branch 2 is set to the adjacent vertebra by support post 6 by abutment 7. At the same time, the ends of the branch are open by return springs 6 and 7 at an angle o , The device is in the position depicted in FIG. 5.

Vida

0

S

n

0

five

thirty

35

42

Then, the branch 2 is tilted forward at an angle ofj and the branch 1 is compressed until the teeth 3 are inserted into the vertebral arch, and then simultaneously (generally), the branch 1 is compressed and the inclination is in the range of the branch 2, the working sponge 1 is informed trajectory of movement depending on the configuration of the vertebra. When this occurs, planing of the bone of the vertebra is made with the thickness of the bone chips, the maximum value of which is limited by the height of the teeth 3.

After each passage of the teeth 3, the depth of the groove is visually monitored.

By cutting the vertebral arch on one side of the spinous process, the device is fixed at another convenient place of the adjacent vertebra and the vertebra arch on the other side of the spinous process is cut in the same way, which, together with the cut out part of the vertebral arch, is removed after cutting the yellow ligament. The bone chips formed during the cutting process go out through the slots 5 and are removed after each knife passage manually, with special additional means or collected by means of the casing 8 when installed on the working sponge branch I.

Thus, the use of the device eliminates the possibility of spinal cord traumatizing due to races, covering the vertebral arches without inserting a tool into the vertebral cavity.

 channel.

-AT

2

Fig.Z

FagL

0

Editor S.Patrusheva

FSh.7

Compiled by R. Korov Kovska

Tehred L. Serdyukova Proofreader I. Musk

Order 4737/3 Circulation 660 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Claims (1)

DEVICE FOR BONE OPERATIONS, containing two pivotally connected spring-loaded jaws with working jaws, which is ensured by the fact that, in order to prevent damage to the spinal cord, the working jaw of one of the jaws is equipped with two cutting teeth on the end surface edges and inclined grooves offset relative to each other, and the working jaw of the other jaw is equipped with a support stand with emphasis, and the working jaws are removable. figure 1