Adaptive apparatus for driving a threaded device into material such as a biological tissue
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United States of America Patent
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app pub date -
Oct 21, 2004
filing date -
Apr 24, 2002
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Abandoned
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Abstract
An adaptive apparatus for driving a threaded device into material, the apparatus including a rotating driving bit, a sensor for sensing during said driving a first quantity related to the material's properties, memory means for storing sensed values of said first quantity, and a feedback arrangement which processes the values sensed by the sensor in comparison to known data to characterise the material and to determine a shut-off condition at which safe and effective engagement of the threaded device in the material is achieved, wherein the feedback arrangement ceases rotation of said driving bit when said shut-off condition is achieved. In another form of the invention, there is provided a method of driving a threaded device into material, said method including the steps of: driving the threaded device into said material by way of a rotating driving bit; sensing during said driving a first quantity related to material properties of the material; storing sensed values of said first quantity; processing the values sensed by the sensor in comparison to known data to characterise the material and to determine a shut-off condition at which safe and effective engagement of the threaded device in the material is achieved; and ceasing rotation of said driving bit when said shut-off condition is achieved.
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