Patent ID: 9706981
Date: 2017-07-18
CPC Classifications: A61B

Claim:
1. An intelligent surgical device configured to selectively couple with and operate a non-intelligent loading unit, wherein the non-intelligent loading unit is configured for actuation by the surgical device, and wherein the non-intelligent loading unit has at least a first condition and a second condition, the surgical device comprising: a housing; a power source supported in the housing; at least one drive motor supported in the housing and being in electrical communication with the power source, wherein the at least one drive motor operably connects with the non-intelligent loading unit when the non-intelligent loading unit is connected to the housing; an H-bridge configured to drive the at least one drive motor; and control circuitry interfacing with the power source and the at least one drive motor, wherein the control circuitry includes a feedback system for monitoring a voltage being delivered to the at least one drive motor during a use thereof and for changing an operative parameter of the surgical device when a change in the voltage being delivered to the at least one drive motor occurs, the feedback system including a resistor associated with the H-bridge, the resistor having a known quantity associated with the voltage being delivered to the at least one drive motor, the feedback system configured to calculate a current level across the resistor; and wherein, during operation of the surgical device, the at least one drive motor actuates the non-intelligent loading unit from the first condition to at least the second condition; and wherein, during operation of the surgical device, when the non-intelligent loading unit achieves the second condition, a change in the voltage being delivered to the at least one drive motor occurs and an operative parameter of the surgical device is changed, the operative parameter of the surgical device being changed when the feedback system determines a current level across the resistor exceeds a threshold current level.