Arthroscopic Extravasation Minimization Device with Drainage Ribs
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Solution Overview
Problem
Extravasation of fluid during arthroscopic shoulder surgery leads to adverse effects such as tracheal compression, hemarthrosis, thrombophlebitis, compartment syndrome, and infection, necessitating a solution to minimize fluid leakage into surrounding tissues while maintaining a stable surgical portal.
Innovation Solution
The extravasation minimization device features a tube with outwardly extending ribs and drainage lumens, drainage holes, and a fluid port with a manifold for controlling fluid flow, allowing for efficient drainage of excess fluid from the surgical site while preserving a stable portal for arthroscopic instruments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If fluid is introduced into the surgical site to expand the joint and control bleeding, then the surgical field is improved for visualization and operation, but fluid extravasation into surrounding tissues occurs causing adverse effects
Solution Approach 1:
The patent introduces an intermediary device (extravasation minimization device) that acts as a mediator between the fluid infusion system and the surrounding tissues. This device includes a drainage catheter with fenestrations that allows controlled drainage of excess fluid from the surgical site, preventing fluid from extravasating into surrounding tissues while maintaining necessary fluid pressure for surgical field expansion and visualization.
Solution Approach 2:
The patent applies local quality by creating a localized drainage pathway at the surgical site through the extravasation minimization device. The drainage catheter with its fenestrations is positioned specifically at the portal site where fluid extravasation occurs, providing localized fluid removal without affecting the overall fluid pressure needed for joint expansion and surgical field visualization elsewhere in the surgical site.
2Stability of the object's composition
If a stable surgical portal is maintained for arthroscopic instruments, then surgical precision and stability are improved, but fluid can escape into surrounding soft tissues causing compartment syndrome and other complications
Solution Approach 1:
The patent merges multiple functions into a single integrated device. The extravasation minimization device combines the surgical portal function (providing a stable access point for arthroscopic instruments) with the fluid drainage function (removing excess fluid through the drainage catheter). This integration allows the surgical portal to remain stable for instrument insertion while simultaneously preventing fluid leakage into surrounding soft tissues through the combined drainage capability.
Solution Approach 2:
The drainage catheter with fenestrations serves as an intermediary element within the surgical portal. It is positioned through the portal tract and provides a dedicated pathway for fluid drainage that does not compromise the structural integrity or stability of the portal itself for instrument passage, thereby mediating between portal stability requirements and fluid leakage prevention.
3Reliability
If fluid pressure is increased to control bleeding and maintain surgical field, then hemostasis and visualization are improved, but extravasation risk increases causing tracheal compression and nerve injury
Solution Approach 1:
The patent implements a feedback mechanism through the drainage catheter system. The catheter with fenestrations continuously monitors and removes excess fluid from the surgical site, providing negative feedback that prevents fluid pressure from rising to dangerous levels. This feedback control allows maintenance of sufficient fluid pressure for hemostasis and visualization while preventing pressure buildup that would cause extravasation and associated adverse effects such as tracheal compression and nerve injury.
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
This device significantly reduces fluid extravasation, minimizing patient discomfort and recovery time by effectively draining excess fluid from the surgical site, thus maintaining a clear and stable surgical field.
Implementation Method 1
Drainage holes in fluid communication with the drainage lumens are disposed in the channels running longitudinally between the outwardly extending ribs
Data Source
AI summary
The devices and methods shown provide for the minimization of extravasation during arthroscopic surgery. The extravasation minimization device allows a surgeon to drain excess fluids from the soft tissue surrounding the surgical field while also providing a stable surgical portal for arthroscopic surgical instruments.