Multi-port Access Device for Single Incision Surgery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current surgical access devices for minimally invasive procedures often require multiple small incisions and lack versatility in port sizes, limiting instrument introduction options and access to natural orifices during laparoscopic and trans-anal surgeries.
Innovation Solution
A multi-port access device with an elongated tubular body and a multiport end cap featuring various port sizes, a ratchet mechanism, and seal assemblies for secure instrument introduction, allowing axial rotation and connection to a pressurized gas line, with adjustable length and seal configurations for enhanced surgical access through a single incision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple small incisions are made for conventional laparoscopic access, then instrument introduction is enabled, but patient trauma and recovery time increase
Solution Approach 1:
The patent combines multiple access ports into a single integrated hub device that can be inserted through one incision. The hub contains multiple ports (typically 3-5 ports) that allow introduction of various surgical instruments simultaneously through a single access point, eliminating the need for multiple separate incisions and thereby reducing patient trauma while maintaining ease of instrument introduction.
Solution Approach 2:
The single-incision hub device provides multi-functional access by incorporating multiple ports of different sizes and configurations within one device. This universal access device can accommodate various surgical instruments including graspers, scissors, staplers, and cameras, enabling a wide range of minimally invasive procedures through a single incision site.
2Object-affected harmful factors
If a single incision access device is used, then patient trauma is reduced, but instrument introduction options and surgical versatility are limited
Solution Approach 1:
The hub device is segmented into multiple functional ports, each capable of accommodating different instrument types and sizes. This segmentation allows surgeons to introduce various specialized instruments (graspers, scissors, staplers, cameras, irrigation/suction devices) through the single hub, providing versatile instrument options while maintaining the benefit of a single incision.
Solution Approach 2:
The design allows smaller diameter instruments to be nested within or alongside larger instruments through the same access ports. The hub structure provides a nested configuration where multiple instruments can be introduced through a single external incision, with instruments of varying diameters accommodated through the same access point, thereby enhancing versatility without requiring multiple incisions.
3Adaptability or versatility
If multiple access ports are provided in a single device, then surgical versatility is improved, but device complexity increases
Solution Approach 1:
The hub device integrates multiple access ports, sealing mechanisms, and instrument retention features into a single universal component. This multi-functional design provides various port sizes and configurations while consolidating what would otherwise require multiple separate devices, thereby improving versatility without proportionally increasing overall device complexity.
Solution Approach 2:
The patent employs flexible sealing membranes (such as everted flaps or duckbill seals) that automatically seal around instruments when not in use and open to accommodate instrument passage. These flexible sealing structures provide a simple yet effective mechanism for maintaining pneumoperitoneum while allowing multiple instruments to pass through the same port, reducing the need for complex mechanical valves or locking mechanisms.
4Ease of operation
If conventional mechanical seals are used in access devices, then instrument access is enabled, but the risk of gas leakage and seal failure increases
Solution Approach 1:
The patent replaces conventional mechanical seals with flexible membrane structures such as everted flaps, duckbill seals, or elastic membranes that passively seal around instruments. These thin film structures conform to the instrument surface, providing a reliable seal that is less prone to failure compared to rigid mechanical seals, while still allowing smooth instrument insertion and removal.
Solution Approach 2:
The sealing mechanism is designed to be self-actuating, where the natural elasticity and geometry of the membrane cause it to automatically seal around the instrument when the instrument is withdrawn or repositioned. This self-sealing mechanism eliminates the need for complex active control systems or manual intervention to maintain seal integrity, thereby improving reliability while maintaining ease of instrument access.
Data Source
AI summary
An access device for surgical procedures is disclosed which includes a multiport end cap including a plurality of separate access ports for accommodating the introduction of individual surgical instruments into a body cavity or lumen of a patient, and a coupling for operatively connecting the multiport end cap to a tubular body.