CRYOINSTRUMENT Russian patent published in 2005 - IPC

FIELD: medical engineering.

SUBSTANCE: device has two moveable connected branches having ring-shaped handles. Their working parts are three-dimensional from the connection place to the distal ends allowing closing the working surfaces along closure plane. One of the branches is 2-3 times as large in volume as the other one. The working surface being closed, the working part of the branches has oval shape in instrument plane set in perpendicular to the closure plane. The distal part of the branches is sharpened at an angle of 30-35° in closure plane and maximum convex widening of branches corresponding to oval middle part is equal to 1/5 of branch working part length. The working surface of both branches are curved as arc-shaped waves with fully superposable wave crests of one working surface with recesses of the other one in closing. The waves are produced with deflection in distal part of the working surface towards the end and in the middle part with deflection towards convex widening of the branches. Wave slope directed towards working surfaces closure center is steeper as the slope directed towards the peripheral part of the closure surface. The branches are manufactured from high specific heat and good temperature conductivity material in thickness of working part of which capillary slit-shaped grooves directed to distal ends and maximum convexity working parts of the branches. The working parts of the branches are matt and have microscopic unevenness, their external surfaces are mirror-like finished. The branches are left-side- or right-side-convex relative to closure plane of their working surfaces. Proximal part of branch and rack mechanism fixed thereon are arch-shaped relative to longitudinal axis of instrument plane being set in perpendicular to the closure plane. The rack mechanism is elongated and has millimetric linear scale, moveable member for fixing branches. The rack mechanism teeth have small pitch.

EFFECT: enhanced effectiveness of treatment.

4 dwg