Haptic Surgical Simulator with Modular Portal and Decoupled Shaft
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing surgical simulation systems lack realism due to fixed portal setups, inability to simulate variable portal configurations, and unnatural instrument withdrawal and insertion exercises, which limits the training experience, especially in laparoscopic, arthroscopic, and thoracoscopic procedures.
Innovation Solution
A haptic user interface device with a modular design allowing for multiple and arbitrary portal settings, decoupling the instrument shaft from the device, enabling full retraction and insertion, and incorporating actuators for force feedback, along with an instrument detection and identification system using a slotted optical sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed portal setup is used in the simulation system, then the device structure is simplified, but the training realism is reduced because it cannot reflect variable real-life portal configurations
Solution Approach 1:
The portal positions are made dynamically adjustable rather than fixed. The base structure includes multiple adjustable portals that can be repositioned to different locations and orientations, allowing the simulation to reflect variable real-life surgical configurations while maintaining a manageable device structure through modular design
2Ease of operation
If the instrument shaft is integrated into the user interface device, then the device structure is simplified, but the instrument withdrawal and insertion exercises become unnatural
Solution Approach 1:
The instrument shaft is segmented from the main device body, allowing it to be independently inserted into and withdrawn from the portal. This segmentation enables natural instrument handling exercises where the shaft can be fully retracted and reinserted, mimicking real surgical operations while the modular connection maintains device structure simplicity
3Reliability
If force feedback actuators are added to provide haptic feedback, then the training realism is improved, but the device complexity and energy consumption increase
Solution Approach 1:
Complex mechanical force feedback mechanisms are replaced with more streamlined actuator systems that provide haptic feedback through controlled resistance. The actuators generate forces and torques based on simulated tissue interactions, providing realistic tactile feedback while reducing overall device complexity compared to traditional mechanical spring-based systems
4Adaptability or versatility
If multiple portals are made adjustable to different positions, then the adaptability to different procedures is improved, but the device complexity increases
Solution Approach 1:
The base structure is designed with universal, standardized portal mounts that can accommodate different instrument types and positions. Each portal uses a common adjustment mechanism that can be configured for various procedures, allowing one device to serve multiple surgical training purposes without requiring procedure-specific complex mechanisms
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
Enhances training realism by allowing variable portal configurations and natural instrument handling simulations, improving the educational platform for both individual and team training in surgical procedures.
Implementation Method 1
an instrument detection and identification system using a slotted optical sensor
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present disclosure relates to a surgical simulation arrangement for a user handling a simulation instrument, allowing for simulation improvements when simulating e.g. a laparoscopic, arthroscopic or thoracoscopic procedure. The present disclosure also relates to a haptic user interface device for use with a surgical simulation system.