Apparatus and method for testing the bending strength of needles

Details Apparatus and method for testing the bending strength of needles Apparatus and method for testing the bending strength of needles

1990-06-11

1991-06-11

Myracle, Jerry W.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

G01N 320

Patent

active

050222732

ABSTRACT:
An apparatus and method is disclosed for determining the bending strength of curved surgical needles. The apparatus includes a means to releasably grip the butt end portion of the needle connected to a rotatable flywheel. A knife edge is positioned in the path of the rotating needle and engaged thereby, while a load cell to which the knife edge is connected, generates signals in dependence upon the bending movements applied to the needle. Such signals are transmitted to appropriate monitoring and recording instrumentation. The rotation of the needle with respect to a center of rotation and with respect to the knife edge are maintained to within precise limitations.

REFERENCES:
patent: 4160325 (1979-07-01), De Nicola
patent: 4194402 (1980-03-01), De Nicola
patent: 4721000 (1988-01-01), Scanlon

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