Laparoscopic Tool Core Sleeve Mechanism for Single Port Access
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Solution Overview
Problem
Conventional laparoscopic procedures require multiple incisions, increasing the risk of infection, bleeding, and postoperative pain, and making it difficult to access target sites with multiple tools simultaneously through a single port.
Innovation Solution
Design of laparoscopic tools with a tubular sleeve and core that allows for limited movement relative to each other, preventing rotation while enabling free movement in a plane vertical to the instrument, and featuring S-shaped, C-shaped, or U-shaped geometries to minimize interference and facilitate intuitive manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple incisions are made for conventional laparoscopic access, then multiple tools can access target sites simultaneously, but the risk of infection, bleeding, and postoperative pain increases
Solution Approach 1:
The patent combines multiple separate incisions and access ports into a single integrated access port. This single port accommodates multiple surgical tools simultaneously, allowing them to access the target site through one unified entry point rather than requiring separate incisions for each tool.
Solution Approach 2:
The single access port is designed with universal functionality to accommodate various surgical tools with different functions. The port structure includes multiple channels or openings that can receive different types of surgical instruments, making it a multi-functional access point that replaces multiple specialized incisions.
2Object-affected harmful factors
If all tools are introduced through a single port, then cosmetic result is improved, but tool interference and difficulty in approaching target area simultaneously increases
Solution Approach 1:
The patent employs curved or S-shaped tools that utilize three-dimensional spatial arrangement within the single port. The tools are configured with different curvatures and orientations, allowing them to approach the target area from different angular dimensions while passing through the same single port entry point.
Solution Approach 2:
The surgical tools incorporate curved or S-shaped geometries rather than straight configurations. This curvature allows the tools to navigate the confined space within the single port and extend toward the target area in different directions, reducing interference between adjacent tools while maintaining access through the single port.
3Device complexity
If conventional straight tools are used through a single port, then tool simplicity is maintained, but the ability to approach target area and manipulate intuitively deteriorates
Solution Approach 1:
The tools feature curved or S-shaped configurations that provide intuitive manipulation characteristics. The curvature of the tools naturally guides the surgeon's hand movements and provides tactile feedback that mimics the feel of traditional straight tools, making the transition to single-port surgery more intuitive while maintaining ergonomic handling.
Data Source
AI summary
A system for performing single port laparoscopic procedures includes a transcutaneous seal and a plurality of tools. The tools comprise a substantially rigid tubular seal having a core which is translatably and rotatably disposed in the sleeve. The handle at the proximal end of the tool controls an end effector at the distal end of the tool. The sleeves of the tools are locked in the transcutaneous seals so that they remain in a fixed geometric relationship which prevents the tools from interfering with each other during laparoscopic procedures.