Valved Introducer Adapter With Segmented Ducts for Sealing
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Solution Overview
Problem
Existing valved introducers for vascular surgery face challenges in achieving effective sealing during the introduction of surgical instruments, particularly catheters and guides, leading to blood flow leakage, and are difficult to handle due to fixed diameters and opening configurations.
Innovation Solution
A valved introducer with an adapter featuring a torsionally deformable valve and sealing means at both ends, along with a conical distal tip for improved insertion and centering, allows for the simultaneous use of multiple instruments of varying sizes with enhanced sealing and ease of handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a torsionally deformable valve is used in the introducer, then the tightness of the instrument is improved, but blood flow leakage still occurs between multiple instruments
Solution Approach 1:
The adapter is divided into multiple independent ducts (at least two ducts), each capable of receiving a surgical instrument separately. This segmentation allows each duct to maintain its own sealing independent of other instruments, preventing blood flow leakage between multiple simultaneous instrument introductions.
Solution Approach 2:
The adapter with multiple ducts is nested within the introducer body, and each duct can accommodate surgical instruments in a nested configuration. This allows multiple instruments to pass through the same introducer entry point while maintaining individual sealing paths, eliminating gaps between instruments.
2Device complexity
If the elongated main body is directly introduced into the human body with fixed openings, then the device structure is simplified, but the device cannot be adjusted without removing the entire device
Solution Approach 1:
The adapter is designed as a separate, removable component from the introducer body, segmented into distinct functional parts (ducts, sealing elements, attachment means). This allows the adapter to be exchanged or adjusted without removing the entire introducer device, providing flexibility while maintaining a relatively simple overall structure.
Solution Approach 2:
The adapter incorporates adjustable features including variable diameter options and configurable opening arrangements that can be selected or modified during the procedure. The attachment means allow the adapter to be securely fixed in different configurations, enabling dynamic adaptation to different surgical needs without complete device removal.
3Productivity
If multiple surgical instruments are introduced simultaneously through the introducer, then the procedure efficiency is improved, but sealing problems occur
Solution Approach 1:
The adapter contains multiple separate ducts (at least two) that can each receive a surgical instrument independently. Each duct is equipped with sealing means at its distal end to prevent blood flow leakage. This segmented design allows multiple instruments to be introduced simultaneously through the same introducer entry point while maintaining individual sealing paths, thus improving procedure efficiency without compromising sealing reliability.
Data Source
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AI summary
An adaptor (1) for the valve (15) of an introducer (16) in a human or animal body, characterized in that it comprises an outer surface (2) adapted to cooperate with the valve (15); its interior volume (3) comprises at least one duct (4) for allowing surgical or medical instruments having an elongate body to pass through; and the duct (4) comprises waterproofing means. The duct (4) of the adaptor (1) comprises waterproofing means at its proximal end (6) and/or at its distal end (5).