SU1337070A1 - Chisel - Google Patents

Abstract

The invention relates to medical technology. To preserve the spongy bone beam structure in the remainder of the vertebral body, the chisel contains a handle 1 and a working part 2, which has a U-shaped notch 3, cutting edges at the end 5, and an insertion depth limiter 6. The cutting edges are sharpened on the side of the recess 3. The limiter 6 is made at the point of transition of the handle 1 to the working part 2 on the side of its solid middle face 7. 2 Il. oo with vj (fff

Description

1133

The invention relates to medical technology, in particular to surgical instruments used for treating bone.

The aim of the invention is to preserve the spongy bone frame structure in the remainder of the vertebral body.

FIG. 1 shows a chisel, a general view; in fig. 2 - the same, the working part with cutting edges on the end,

The chisel contains a handle 1 and a working part 2. The working part 2 has a U-shaped recess 3, cutting edges 4 at the end 5 and an insertion depth limiter 6. The cutting edges 4 are sharpened from the side of the recess 3. The limiter 6 is made at the point where the handle 1 enters the working part 2 from the side of its solid middle face 7.

The constructive implementation of the working part allows the beam structure of the cancellous bone to remain in the remnant of the vertebral body due to the fact that sharpening the cutting edges 4 of the bit from the recess 3 allows excision of the bone tissue without the remnant of the vertebral body, because the crushing force the bone is directed towards the excised part.

The dimensions of the cutting edges and the length of the working part are determined for each age group of children of the first seven years of life.

The bit is used as follows.

A chisel with dimensions corresponding to the size of the vertebral bodies of the operated child is placed on the lateral surface with cutting lugs 4

02

the remnant of the vertebral body is perpendicular to the longitudinal axis of the spine, while the free ends of the cutting edges somewhat protrude into the intervertebral diastasis. Then striking the butt 8 of the handle 1 of the bit with a medical hammer (not shown) deepens the working part into the body of the vertebra until the restrictor touches the side surface of the body of the vertebra, i.e. cut a rectangular fragment of the bone tKani from the remnant of the vertebral body. After dissection of the bone to separate the lower end of the bone fragment from the ligaments and the disk, the chisel is tilted to the side opposite to the intervertebral diastasis, creating an additional support for the limiting tool

Claims (1)

(not shown). A similar operation is performed on the body of the adjacent vertebra to be fixed. In the formed rectangular grooves located coaxially, a graft of appropriate shape and size is inserted, protecting the remains of the bodies of the two by calling. Invention Formula A chisel containing a handle and a working part with a U-shaped recess, cutting edges. Both at the end and the depth gauge, about t l and -. moo in order to 35 40 preservation of the spongy bone frame structure in the remainder of the vertebral body, cutting edges sharpened on the side of the notch, and the limiter is made at the transition point of the handle to the working part on the side of its continuous middle face. VNShShI Order 4069/6 Circulation 594G12: LP11 H 1 Random polygons district, Uzhgorod, st. Project 4