Medical Drill Force Feedback Control for Precise Treatment State Sensing
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Solution Overview
Problem
Existing medical apparatuses rely solely on motor current values for operation control, which inadequately represent the state of the treatment mechanism, leading to imprecise control and lack of user notification during treatments.
Innovation Solution
A medical apparatus that includes a treatment mechanism, a treatment actuator, and an operation controller to calculate and control operations based on force tactile sensation parameters, acquiring control parameters related to the force tactile sensation to precisely manage the treatment mechanism's state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If operation control is based solely on motor current value, then the control system is simple, but the representation of treatment mechanism state is inaccurate
Solution Approach 1:
The patent implements feedback by detecting the current value of the motor, calculating force tactile sensation parameters from this current value, and using these parameters to control the motor operation. This closed-loop feedback system enables accurate representation of the treatment mechanism state while maintaining controlled complexity through systematic parameter calculation and notification to the user.
2Manufacturing precision
If force tactile sensation parameters are calculated and used for control, then operation precision is improved, but device complexity increases
Solution Approach 1:
The patent transforms the motor current value into force tactile sensation parameters through calculation, creating new control parameters that better represent the treatment mechanism state. This parameter transformation enables more precise operation control while managing complexity through systematic mathematical relationships between parameters.
Solution Approach 2:
The calculated force tactile sensation parameters are fed back to control the motor operation, creating a precision control loop that adjusts motor behavior based on the derived parameters, thereby achieving improved operation precision.
3Loss of information
If only motor current value is monitored, then the monitoring system is simple, but information accuracy about treatment state is insufficient
Solution Approach 1:
The patent introduces force tactile sensation parameters as intermediary variables that mediate between the motor current value and the treatment mechanism state. These parameters serve as a bridge, translating electrical measurements into meaningful mechanical state information, thereby reducing information loss while managing complexity through structured parameter transformation.
Data Source
AI summary
A medical apparatus includes a treatment mechanism, a slave actuator, an operation control unit, and a parameter acquisition unit. The treatment mechanism is used for treating a patient. The slave actuator causes the treatment mechanism to perform the treatment. The operation control unit calculates the control parameters related to the force tactile sensation, based on the information about the position that is detected along with the treatment and controls the operation of the slave actuator for causing the treatment mechanism to perform the treatment, based on the control parameters related to the force tactile sensation. The parameter acquisition unit acquires the control parameters related to the force tactile sensation.