Splittable Cannula Sealing Gas Leakage
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Solution Overview
Problem
Current medical access ports fail to maintain a fluid-tight seal when surgical tools or instruments are inserted and manipulated within pressurized body cavies, leading to significant gas leakage during procedures.
Innovation Solution
A splittable cannula device with hingedly connected sections that can envelop a surgical tool, transitioning from an open configuration to a closed configuration to prevent gas leakage, featuring a radial gasket for sealing and a locking mechanism to maintain the closed position, allowing for the use of surgical instruments within the body cavity while maintaining pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional access port is used to allow surgical tool insertion, then the surgical instrument can be inserted into the body cavity, but gas leakage occurs and pressure integrity is lost
Solution Approach 1:
The access port is divided into multiple segments or sections that can move relative to each other. The body of the access port includes a first portion and a second portion that can rotate or translate to transition between open and closed configurations, allowing the port to adapt its shape to maintain sealing while accommodating instrument insertion.
Solution Approach 2:
The access port transitions from a static structure to a dynamic one that can change its configuration. The port can dynamically adjust between an open configuration (allowing instrument passage) and a closed configuration (maintaining pressure seal), enabling it to respond to operational requirements in real-time.
2Reliability
If the access port maintains a tight seal when no tool is inserted, then pressure integrity is maintained, but the seal cannot maintain integrity when a tool is inserted and manipulated
Solution Approach 1:
The access port employs dynamic sealing elements that can adjust their position and configuration. The sealing mechanism transitions from a static seal to an active, movable seal that can accommodate instrument insertion while maintaining contact with the instrument surface to prevent gas leakage during manipulation.
Solution Approach 2:
The access port utilizes flexible sealing elements or membranes that can deform and conform to the shape of inserted instruments. These flexible components maintain continuous contact with the instrument surface, adapting to instrument movements while preserving the pressure barrier.
3Reliability
If a sealed access port is used to prevent gas leakage, then pressure integrity is maintained, but surgical tools cannot be inserted or manipulated
Solution Approach 1:
The access port is segmented into movable sections that can separate or open to create a passage for surgical tools. The first and second portions of the body can move relative to each other to form an open configuration, allowing instrument insertion while maintaining the ability to close and seal around the instrument.
Solution Approach 2:
The access port is designed to perform multiple functions: maintaining pressure seal when no instrument is present, accommodating instrument insertion, and providing sealed passage during instrument manipulation. The dynamic configuration allows the same device to serve both sealing and access purposes throughout the surgical procedure.
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 effectively prevents gas leakage from the body cavity during surgical procedures, enabling the use of larger tools and implants through standard cannula-trocar assemblies and maintaining pressure integrity even when instruments are inserted, thus enhancing the reliability of minimally invasive surgeries.
Implementation Method 1
An inner surface of the first and second portion may include a gasket. The gasket provides for sealing of the channel when the device is in a closed position
Data Source
AI summary
This invention generally relates to a medical device assembly for facilitating a sealed working channel into a pressurized body cavity, and methods of use thereof, In certain embodiments, devices of the invention include a hollow body that is splittable along its length and being configured to move between an open configuration for operably coupling with a surgical instrument and a closed configuration, in which in the closed configuration, the device provides a seal that prevents gas leakage from an incision site of a body cavity while the instrument is in the body cavity.