Hand Tracking Control for Precise Minimally Invasive Surgery

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Solution Overview

Problem

Current minimally invasive surgical systems lack effective control mechanisms that utilize hand movements to precisely operate surgical instruments, leading to reduced dexterity and increased complexity for surgeons.

Innovation Solution

A hand tracking system that uses sensor elements mounted on a surgeon's hand to track locations and generate system control parameters, allowing for precise control of minimally invasive surgical instruments through hand gestures and movements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional foot pedals and switches are used for controlling surgical instruments, then the control mechanism is simple in structure, but the surgical dexterity and precision are reduced

Engineering Contradiction:
Improvesurgical dexterityVSAvoidcontrol mechanism complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent replaces mechanical foot pedals and switches with an optical hand tracking system. Sensors mounted on the surgeon's hand capture hand movements and gestures, which are then processed by a computing device to generate control commands for surgical instruments. This substitution of mechanical control with optical tracking and computational processing enables more intuitive and dexterous control while reducing the mechanical complexity of physical control devices.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If hand tracking system with multiple sensors is implemented, then the control precision is improved, but the device complexity increases

Engineering Contradiction:
Improvehand location tracking precisionVSAvoidsensor system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent employs multiple sensors with different measurement capabilities (optical sensors for position, accelerometers for motion, gyroscopes for orientation) that work together within a single integrated hand tracking system. This multi-functional sensor array captures comprehensive hand movement data, enabling precise tracking of both hand position and gesture orientation. The computational device processes these diverse sensor inputs uniformly to generate accurate control commands, achieving high measurement precision while managing system complexity through integrated multi-functional design.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Productivity

If foot pedals and switches are used for instrument control, then the system structure is simple, but the productivity and surgical efficiency are reduced

Engineering Contradiction:
Improvesurgical efficiencyVSAvoidcontrol system structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The hand tracking system enables the surgeon to control surgical instruments directly through natural hand gestures and movements, eliminating the need to transfer control to foot pedals or switches. The sensors mounted on the surgeon's own hand capture movements that intuitively map to instrument operations, allowing continuous and efficient surgical manipulation without breaking the surgical flow or requiring the surgeon to shift attention to separate control devices, thereby significantly improving surgical efficiency.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS12343101B2Method and system for control using hand tracking
Publication Date: 2025.07.01 INTUITIVE SURGICAL OPERATIONS INC
  • US12343101B2 patent drawing
  • US12343101B2 patent drawing
  • US12343101B2 patent drawing

AI summary

Techniques for control using hand tracking include a system having an input control configured to be manipulated by an operator of the system, a hand tracking unit, and a controller. The controller is configured to determine a first position of the input control; receive, from the hand tracking unit, a second position of a hand of the operator; determine whether the first position is within a threshold distance of the second position; and control display of a user interface based on the determination of whether the first position is within the threshold distance of the second position.