Hinged Percutaneous Access Device with Shape Memory Anchoring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing surgical access devices for minimally invasive procedures require anchoring sutures that cause trauma, add complexity, and create obstructions, while also necessitating multiple access ports for instruments like cameras and lighting devices, which complicates surgeries and increases the risk of device withdrawal.
Innovation Solution
A percutaneous access device with a hingedly connected distal portion that automatically secures itself using shape memory material, reducing the need for sutures and integrating accessories like cameras and lighting directly into the access port, allowing for a single incision and improved maneuverability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If anchoring sutures are used to secure the trocar, then the device is secured in place, but patient trauma increases and procedural complexity increases
Solution Approach 1:
The patent removes the anchoring suture component from the surgical system by integrating the anchoring function directly into the trocar body through hinged arms that engage with the abdominal wall tissue, eliminating the need for separate sutures and their associated trauma
Solution Approach 2:
The anchoring function is merged with the trocar body by incorporating hinged arms that can be deployed from the trocar shaft, combining the access device and anchoring mechanism into a single integrated unit, thereby eliminating separate anchoring sutures
2Reliability
If anchoring sutures are used to secure the trocar, then the device is secured in place, but procedural complexity increases
Solution Approach 1:
The patent extracts the anchoring suture step from the procedural sequence by providing self-contained hinged arms on the trocar that automatically engage with tissue, eliminating the need for separate suture placement actions
Solution Approach 2:
The trocar's hinged arms automatically engage with the abdominal wall tissue through their own mechanical action when the trocar is inserted, providing self-anchoring without requiring additional surgical steps for suture placement
3Adaptability or versatility
If multiple access ports are used for instruments, then instrument access is enabled, but surgical complexity increases and device withdrawal risk increases
Solution Approach 1:
The patent makes the single access port universal by providing multiple hinged arms that can accommodate different surgical instruments simultaneously, allowing the same port to serve multiple functions and reduce the need for multiple separate access sites
Solution Approach 2:
The patent merges multiple instrument access functions into a single access port through the use of multiple hinged arms that can each receive different instruments, consolidating what would traditionally require multiple separate ports into one integrated access point
4Adaptability or versatility
If multiple access ports are used for instruments, then instrument access is enabled, but device withdrawal risk increases
Solution Approach 1:
The single access port with multiple hinged arms provides universal access for multiple instruments while maintaining a single anchored connection point, eliminating the cumulative withdrawal risk associated with multiple separate ports
Solution Approach 2:
By merging multiple instrument access functions into a single anchored port structure, the system reduces the total number of anchoring points required, thereby reducing the overall risk of device withdrawal while maintaining full instrument accessibility
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 reduces patient trauma, simplifies surgical procedures by eliminating suture-related complications and minimizing the number of access ports, while ensuring secure device placement and enhanced instrumentation maneuverability within the abdominal cavity.
Implementation Method 1
The distal portion of the access device is constructed from a shape memory material and has a original configuration. The distal portion is deformable from the original configuration to a deployed configuration.
Data Source
AI summary
A percutaneous access device for use in minimally invasive surgery includes an elongated body having a proximal portion and an opposing distal portion. The proximal portion has a proximal bore extending therethrough and the distal portion has a distal bore extending therethrough. The distal portion of the body is hingedly connected to the proximal portion in a first percutaneous access position and a second anchoring position. In the first percutaneous access position the distal and proximal bores are linearly aligned when a surgical instrument is inserted into both the proximal and distal bores. In the second anchoring position the distal bore is angularly displaced from the proximal bore when the surgical instrument is removed from the distal bore.