Robotic Surgical Force Sensing
Multi-Axis Force Feedback for Surgical Robotics
Robotic-assisted surgery allows surgeons to control miniature instruments with precise motion inside the patient. However, the mechanical separation between the surgeon and instrument reduces the direct sense of touch available during conventional surgery.
Force sensors integrated near the instrument wrist or tool tip measure interaction with tissue. This data can provide force feedback to the surgeon, support controlled actuation, monitor instrument loading, and help reduce excessive forces during grasping, suturing, dissection, and needle manipulation.
도전 과제
- Miniature Multi-Axis Measurement: The sensor must resolve small axial, lateral, and torsional loads within the limited diameter of a surgical instrument while minimizing cross-talk between measurement axes.
- Complex Mechanical Forces: Cable tension, wrist articulation, instrument friction, gravity, and actuator loads can appear in the sensor output. The control system must separate these internal forces from actual tool-to-tissue interaction.
- Sterilization and Reliability: Sensors, wiring, adhesives, and protective structures must withstand repeated articulation, cleaning, sterilization cycles, and extended operating use without affecting calibration.
솔루션
- Distal Force and Torque Sensing: Strain gauges integrated into a miniature instrument shaft, wrist member, or custom flexure measure forces close to the point of tissue contact. Locating the sensor distally reduces errors from drivetrain friction and cable transmission.
- Multi-Axis Calibration and Compensation: ANYLOAD can optimize sensing geometry, gauge placement, mechanical stiffness, cross-talk compensation, thermal stability, and overload protection. Calibration across multiple force and torque axes supports real-time force feedback and closed-loop actuation.
- ISO 13485 OEM Manufacturing: Custom flex circuits, miniature wiring, connectors, calibration data, and mechanical interfaces support integration into reusable or limited-use surgical instruments. ANYLOAD supports prototypes through volume production under an ISO 13485-certified quality management system.
결론
A miniature multi-axis force sensor restores measurable interaction between the robotic instrument and patient tissue. Accurate force feedback, low cross-talk, dynamic response, and controlled medical-device manufacturing support safer manipulation and more responsive surgical robotics.
키워드:
Robotic Surgery Force Sensor, Surgical Robot Force Feedback, Haptic Feedback Sensor, Multi-Axis Medical Load Cell, Surgical Instrument Force Sensor, Robotic Actuation Force Control, ISO 13485 Force Sensor
주요 제품
커스텀
Multi-Axis Load Button
표준 버전을 참조하세요.
ANYLOAD can develop a custom strain-gauge force and torque sensor for integration into robotic surgical instruments, wrists, actuators, or end effectors. The sensing element can measure axial and transverse forces, with additional channels for bending moments or torque where required.
Custom options include stainless steel or titanium construction, miniature flex circuits, application-specific gauge patterns, low-profile cable exits, medical connectors, temperature compensation, cross-talk correction, and multi-axis calibration. Sensor geometry can be optimized around the instrument diameter, actuation mechanism, expected tissue forces, sterilization method, and required fatigue life.
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