Rotatable Assistant Port for Single-Port Robotic Instrument Access
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Solution Overview
Problem
Existing minimally invasive surgery systems face challenges in managing multiple surgical instruments through a single cannula, particularly when combining robotically controlled and hand-operated instruments, which can lead to instrument management difficulties and loss of insufflation due to tissue trauma.
Innovation Solution
A rotatable assistant port device with a cannula port and an assistant port that allows for the insertion of a cannula fixed to a teleoperated robot and a hand-operated instrument, respectively, enabling rotation of the assistant port around the cannula while maintaining insufflation, along with a wound protector for secure placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If multiple surgical instruments are introduced through a single cannula, then the number of incisions is reduced, but instrument management becomes difficult
Solution Approach 1:
The single cannula is segmented into multiple separate access channels, with each instrument having its own dedicated pathway. This allows multiple instruments to pass through a single external incision while maintaining separate, manageable routes within the cannula, reducing tissue trauma while preserving ease of instrument manipulation.
Solution Approach 2:
Multiple smaller cannulas or access channels are nested within a single larger cannula structure. This nested configuration enables multiple instruments to be introduced through one main incision while each instrument maintains its own protected pathway, solving both the reduction of incisions and the management of multiple instruments.
2Object-affected harmful factors
If a larger cannula is used to accommodate all instruments, then single port access is achieved, but the cannula size increases
Solution Approach 1:
Instead of using one large cannula, the system segments the access into multiple smaller channels within a single cannula structure. This segmentation allows each instrument to have its own optimized-sized pathway, achieving single port access without requiring an excessively large cannula that would cause more tissue trauma.
Solution Approach 2:
Multiple smaller cannulas are nested within a single parent cannula, allowing each instrument to use a cannula sized appropriately for its specific needs rather than forcing all instruments through one oversized cannula, thus minimizing overall tissue trauma while maintaining single port access.
3Manufacturing precision
If robotically controlled instruments are used, then surgical precision is improved, but access for hand controlled assistant instruments becomes difficult
Solution Approach 1:
The cannula system is segmented to provide dedicated channels for both robotic instruments and hand-controlled assistant instruments. This segmentation allows robotic instruments to maintain precision through their controlled pathways while simultaneously accommodating hand-controlled instruments for retraction and assistance, enhancing both precision and versatility.
Solution Approach 2:
The single cannula system is designed with multi-functionality, incorporating multiple channels that can accommodate different types of instruments simultaneously. This universal design allows the system to support both robotically controlled precision instruments and hand-controlled assistant instruments, achieving both surgical precision and instrument accessibility.
Data Source
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AI summary
Embodiments of a rotating assistant port device are presented. The assistant port device can be utilized to provide for additional assistant instruments in single port robotic surgery. In some embodiments, the assistant port device can be utilized for skin retraction during single port teleoperated robotic surgery.