Spinal Retractor with Oximeter and Force Sensor
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current medical retractor devices lack the ability to monitor tissue oxygen saturation and force applied during spinal surgery, making it difficult to prevent nerve root damage during retraction.
Innovation Solution
A retractor device equipped with an oximeter sensor to measure tissue oxygen saturation and a force sensor to monitor the force applied, allowing for simultaneous measurement and feedback to the surgeon to avoid excessive force that could damage tissues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional retractors are used to hold tissue during spinal surgery, then the surgical site is accessible, but the tissue may be damaged due to lack of monitoring
Solution Approach 1:
The retractor device incorporates sensors that provide real-time feedback on tissue oxygen saturation levels and force applied during retraction. This feedback mechanism allows surgeons to monitor tissue health continuously and adjust retraction force accordingly, preventing tissue damage while maintaining surgical site accessibility.
Solution Approach 2:
The retractor device integrates multiple functions into a single instrument: mechanical retraction capability combined with oxygen saturation sensing and force measurement. This multi-functional design eliminates the need for separate monitoring devices while providing comprehensive tissue protection during surgery.
2Ease of operation
If retraction force is increased to improve surgical access, then better access is achieved, but nerve root damage risk increases
Solution Approach 1:
The force sensor provides real-time measurement of retraction force applied to nerve roots, while the oxygen saturation sensor monitors tissue health. This dual feedback system enables surgeons to optimize retraction force for surgical access while immediately detecting signs of nerve root compromise, thereby maintaining reliability.
Solution Approach 2:
The device establishes baseline oxygen saturation levels before retraction begins. By having this preliminary data, surgeons can compare ongoing measurements against the baseline to detect early signs of nerve root stress, allowing preventive adjustment of retraction force before damage occurs.
3Measurement precision
If sensors are added to the retractor device, then tissue monitoring capability is improved, but device complexity increases
Solution Approach 1:
The oxygen saturation sensor and force sensor are integrated directly into the retractor tip structure, merging measurement functions with the mechanical retraction component. This integration approach minimizes additional complexity by combining multiple sensing capabilities within the existing device architecture rather than adding separate external monitoring systems.
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
The device helps prevent nerve root hypoxia and tissue damage by providing real-time oxygen saturation and force data, enabling surgeons to adjust their technique and ensure safer surgical manipulation.
Implementation Method 1
The oximeter sensor in the device measures oxygen saturation of a tissue being retracted by the retractor device
Implementation Method 2
The force sensor measures an amount of force applied to a retracted tissue by the tip of the retractor device
Data Source
AI summary
A retractor device has an oximeter sensor at its tip, which allows measuring of oxygen saturation of a tissue being retracted by the retractor. The retractor device also has a force sensor which can measure an amount of force that is applied to the retracted tissue by the tip of the retractor device. The tip includes one or more openings for at least one source and detector. A specific implementation is a spinal nerve root retractor with an oximeter sensor and a force sensor.