SU1630798A2 - Surgical disk saw - Google Patents

Abstract

The invention relates to medical technology. The purpose of the invention is to reduce the trauma. The saw contains a circular blade 1 with cutting teeth divorced around the circumference 2. On the non-working part of the saw on both sides of the blade there are rods 4 that are displaced relative to each other and tilted toward the center of the saw. The blade is made with communicating pores and gas-tight walls. Some of the pores are filled with refrigerant. During bone cutting, coolant is continuously cooled by 2-4 sludge by circulating the coolant.

Description

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The invention relates to medical technology, namely surgical cutting tools for treating bone tissue and is in addition to the main author. St. No. 1509054.

The purpose of the invention is to reduce trauma due to more efficient cooling of the cutting surface of the saw.

FIG. 1 shows a surgical blade, the general view; in fig. 2

on the surface of the saw is made gastight.

The device works as follows.

During the cutting of the bone under the action of centrifugal force arising from the rotational movement of the saw, the liquid coolant is thrown in the direction of the cutting teeth 2. During the cutting process it has

Warming up of the cutting teeth 2, with

Section A-A in FIG. 1, on the game. 3 - This low-boiling refrigerant passes to the version of a surgical saw with windows; gas-like state and fills pores

FIG. 4 is a section BB in FIG. 3. blade 1 and rods 4, which the ohSurgical disc saw contains are enhanced by heat exchange with the circumferential blade 1 with divorced harnessing space. Condensation

circumference with cutting teeth 2 and 15 in the n ° Pax of the rods 4, the refrigerant under the actual opening 3 in the center. By the negation of centrifugal force, it is thrown into

the direction of the cutting teeth 2. In this way, the teeth 2 are continuously cooled.

In the barrel part of the saw there is a heat exchanger in the form of rods 4 located on both sides of the blade. The rods 4 are arranged concentrically, with the rods located adjacent are displaced relative to each other in the radial direction. In the embodiment of the saw shown in FIG. 2, the attachment points of the rods 4 located on both sides of the saw,

By making heat-exchange rods of the saw porous with a radial inclination at an acute angle to the blade, the efficiency of continuous cooling of the working part of the saw increases, which is displaced relative to each other (Fig. 2). 5 (Figs. 3 and 4) of the soft tissue lying down;

Claims (2)

adjacent pairs of rods are bent in opposite directions, with the invention formula rods 4 being located on the same distance from the center of the saw, alternately Surgery disc saw aut. bent in opposite directions. Core No. 1509054, characterized in that neither 4 have a radial tilt to the center in order to reduce the trauma due to the saw, while the angles φ between the rod more efficiently cooling the cutting lines 4 and the blade 1 are less saws, saw teeth and rods 90 °, preferably 70-85 °. The blade of the heat exchanger is made porous with a reed, the teeth and rods of the heat exchanger are made with a metric surface coating; liquid refrigerant, with the outer each other in the radial direction. 1 on the surface of the saw is made gastight. The device works as follows. During the cutting of the bone under the action of centrifugal force arising from the rotational movement of the saw, the liquid coolant is thrown in the direction of the cutting teeth 2. In the process of cutting has I 3 y / l / 4 FIG. 2 / / 1 g