Flexible Single Lumen Gas Sealed Access Port for Robotic Surgery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Dual lumen gas sealed access devices for laparoscopic surgery have a larger effective outer diameter than single lumen valve sealed access devices, leading to increased patient trauma, larger scars, more pain, and difficult wound closure due to the need for larger incisions.
Innovation Solution
A multi-lumen tube set with a dual lumen portion for gas recirculation and a single lumen portion for insufflation and pressure sensing, combined with a gas sealed access port that uses a coaxial connector and annular jet assembly to maintain stable pressure and facilitate smoke evacuation, reducing the effective outer diameter and allowing for smaller incisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a dual lumen gas sealed access device is used to provide both insufflation and gas recirculation functions, then functional versatility is improved, but the effective outer diameter increases leading to larger incisions and increased patient trauma
Solution Approach 1:
The access device is divided into separate functional components: a single lumen access port for insufflation and a separate dual lumen tube set for gas recirculation. This segmentation allows each component to be optimized independently, maintaining versatility while reducing the diameter of the access port itself.
Solution Approach 2:
The single lumen access port is designed to serve multiple functions through its integration with the dual lumen tube set. The access port provides insufflation while the tube set handles gas recirculation, creating a multi-functional system that achieves versatility without requiring a larger access port diameter.
2Reliability
If a dual lumen gas sealed access device is used to maintain stable pneumoperitoneum and facilitate smoke evacuation, then surgical functionality is improved, but incision size increases causing larger scars and more pain
Solution Approach 1:
The system separates the insufflation function (single lumen access port) from the gas recirculation and smoke evacuation functions (dual lumen tube set). This allows the access port to remain small for reduced trauma while the separate tube set handles the complex gas management tasks.
Solution Approach 2:
The dual lumen tube set acts as an intermediary component that connects the single lumen access port to the surgical cavity's gas management requirements. It mediates between the simple access port and the complex requirements for stable pneumoperitoneum and smoke evacuation without requiring the access port itself to be large.
3Productivity
If a dual lumen gas sealed access device is used to provide gas recirculation capability, then surgical efficiency is improved, but device complexity increases with more components and assembly steps
Solution Approach 1:
The gas recirculation system is segmented into separate components (dual lumen tube set with inlet and outlet paths) that can be independently manufactured and assembled. This segmentation allows for simplified manufacturing of each component while maintaining the overall surgical efficiency of gas recirculation.
Solution Approach 2:
The single lumen access port and dual lumen tube set are merged into a coordinated system where the access port receives the dual lumen tube set within its central lumen. This merging achieves gas recirculation capability while keeping the access port itself simple and straightforward in design.
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 solution enables surgery with smaller incisions, reducing patient trauma, scar visibility, pain, and wound closure difficulties while maintaining gaseous sealing functionality and smoke evacuation, and potentially lowering component and assembly costs.
Implementation Method 1
The proximal housing portion accommodates an annular jet assembly for receiving pressurized gas from the inlet path to generate a gaseous sealing zone within the central cannula of the body portion to maintain a stable pressure within the surgical cavity
Implementation Method 2
the flexible proximal body portion of the tubular body is bent to provide spatial separation between adjacent robotic arms
Data Source
AI summary
A gas sealed access port is disclosed including a proximal housing having a central lumen providing gas sealed access to the surgical cavity, an inlet path for communicating with a source of pressurized gas, a tapered neck portion and an interior cavity accommodating an annular jet assembly for receiving pressurized gas from the inlet path to generate a gaseous seal within the tapered neck portion, and an elongated tubular body extending from the tapered neck portion in communication with the central lumen and including a flexible proximal body portion and a rigid distal body portion.