Cannula Assembly Kit with Projected Light Pattern for Surgical Visibility
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Solution Overview
Problem
Current minimally invasive surgery techniques face challenges in providing clear visual information to surgeons about the position of surgical instruments relative to the surgical site, leading to potential errors and increased procedural time.
Innovation Solution
A cannula assembly kit equipped with a pattern generating member that includes a projector and light source, temporarily fixed to the cannula shaft, projects a light pattern onto the surgical site, allowing for real-time visualization of instrument position and movement, enhancing control and reducing the risk of mistakes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a pattern generating member with projector and light source is added to the cannula assembly, then visibility of surgical instruments is improved, but device complexity increases
Solution Approach 1:
The projector and light source are integrated into the cannula assembly kit, merging the metrology system with the surgical access device. This combination allows the pattern to be projected directly at the surgical site through the cannula, improving visibility without requiring separate external projection equipment.
Solution Approach 2:
A pattern generating member acts as an intermediary between the surgical instrument and the surgeon's view. The projected light pattern serves as a reference framework that mediates the visualization of instrument position and movement within the body cavity.
2Measurement precision
If real-time visualization of instrument position is achieved through light pattern projection, then surgical precision is improved, but procedure time increases
Solution Approach 1:
The light pattern is projected continuously throughout the surgical procedure, providing uninterrupted real-time visualization of instrument position. This continuous feedback eliminates the need for intermittent measurement checks, maintaining surgical precision while minimizing time loss.
Solution Approach 2:
The projected light pattern provides immediate visual feedback to the surgeon about instrument position and movement. As the surgical instrument moves, the light pattern shifts correspondingly, giving the surgeon real-time information to maintain precision without delays.
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 provides excellent visibility of surgical instruments within the body cavity, improving control and reducing surgical errors and procedure time by correlating instrument movements with changes in the projected light pattern, facilitating more precise minimally invasive surgeries.
Implementation Method 1
a pattern generating member which includes a projector and light source, temporarily fixed to the cannula shaft, projects a light pattern onto the surgical site
Data Source
AI summary
The invention comprises a cannula assembly kit for a trocar suitable for use in minimally invasive surgery. The cannula assembly kit comprises a cannula and a pattern generating member. The cannula has a distal end and a proximal end and comprises a flange portion at its proximal end and an elongate cannula shaft portion extending from said flange portion to its distal end and an access port through the flange portion and the elongate cannula shaft portion, such that a surgical tool of a surgical instrument can be inserted through the access port. The pattern generating member comprises a pattern light source and a projector arranged such that the pattern light source is operatively connected to the projector for projecting a light pattern. At least the projector of the pattern generating member is configured for being at least temporarily fixed to the cannula shaft portion of the cannula.