Robotic Surgery Hand Controller Lateral Movement Detection
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Solution Overview
Problem
Robotic surgery systems face challenges in accurately and efficiently translating operator inputs into precise movements of surgical tools within a body cavity, particularly in detecting lateral movements and controlling the opening and closing of surgical instruments.
Innovation Solution
A hand controller apparatus with a control lever attached to a pivot joint, featuring a lateral movement detector that magnetically or inductively senses the movement of the lever, allowing for precise control of surgical tools based on detected angles and movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a hand controller apparatus uses a control lever with pivot joint for lateral movement detection, then the precision of detecting lateral movements is improved, but the device complexity increases due to additional components like magnetic angular sensors or inductive sensors
Solution Approach 1:
The patent replaces mechanical detection methods with magnetic or inductive sensing systems. The magnetic angular sensor or inductive sensor detects the angular position of the control lever through magnetic fields or electromagnetic induction, eliminating the need for complex mechanical linkages and contact-based sensors, thereby improving detection precision while managing device complexity through non-contact sensing
Solution Approach 2:
The patent introduces a magnetic field or electromagnetic field as an intermediary between the control lever and the sensor. The magnetic angular sensor or inductive sensor detects changes in magnetic flux or electromagnetic induction caused by the lever's angular position, allowing precise measurement without direct mechanical contact, thus resolving the contradiction between precision and complexity
2Measurement precision
If the hand controller apparatus incorporates magnetic angular sensor or inductive sensor for detecting control lever position, then the accuracy of translating hand movements into tool movements is improved, but the manufacturing cost increases
Solution Approach 1:
The patent substitutes complex mechanical transmission mechanisms with magnetic or inductive sensing systems. The magnetic angular sensor or inductive sensor directly measures the angular position of the control lever, eliminating the need for mechanical linkages, gears, or contact-based encoders, thereby improving accuracy while reducing the number of precision-machined mechanical parts, which can lower manufacturing costs
3Adaptability or versatility
If the control lever is made laterally moveable about a pivot joint, then the versatility of controlling different surgical tool functions is improved, but the reliability of the mechanical connection may deteriorate due to wear at the pivot joint
Solution Approach 1:
The patent replaces the mechanical pivot joint with a magnetic or inductive sensing system that detects the angular position of the control lever without physical contact. The magnetic angular sensor or inductive sensor measures the lever's position through magnetic fields or electromagnetic induction, eliminating wear and friction associated with mechanical pivot joints, thereby maintaining versatility while improving reliability
Solution Approach 2:
The patent introduces a magnetic field or electromagnetic field as an intermediary between the control lever and the sensing system. This non-contact detection method allows the control lever to be laterally moveable for versatile control functions without the reliability issues of mechanical wear, as the magnetic or electromagnetic field remains stable and wear-free
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise and accurate control of surgical tools, enhancing the operator's ability to perform complex surgical procedures by effectively translating hand movements into corresponding tool movements, including the opening and closing of instruments.
Implementation Method 1
a lateral movement detector configured to magnetically or inductively detect a lateral movement of the control lever
Implementation Method 2
a lateral movement detector configured to magnetically or inductively detect a lateral movement of the control lever
Data Source
AI summary
In some embodiments, a hand controller apparatus for controlling a tool in a robotic surgery system can include a body configured to be moved to generate a first operator input to cause a tool to move corresponding to the movement of the body. The hand controller apparatus can also include an input control interface formed on a surface of the body and configured to sense one or more of a plurality of second operator inputs associated with a plurality of tool functions, the plurality of second operator inputs being different from the first operator input. The hand controller apparatus can also include a processor configured to control the tool to perform one or more of the plurality of tool functions in response to the sensed one or more second operator inputs.