Modular Multi-Channel Inline Connector for Neural Interfaces
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Solution Overview
Problem
Current percutaneous connector systems for neural interfaces are limited by short trial periods, high failure rates due to wear and tear, high profile designs, lack of expandability, and potential for infection, necessitating a modular, reliable, and minimally invasive solution for linking external or internal stimulation/recording systems to implanted electrodes.
Innovation Solution
A modular multi-channel inline connector system with a low-profile, flexible external connector assembly that is easily replaceable and expandable, featuring detachable percutaneous leads and fine wires suitable for nerve fascicle insertion, designed to minimize trauma and infection risk, with a significantly increased mating cycle life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If traditional percutaneous connector systems are used, then electrodes can be tested during trial periods, but the trial period is limited to 2-7 days and the connector has high failure rates due to wear and tear
Solution Approach 1:
The connector system is divided into separate modular components: an external connector assembly, percutaneous leads, and implanted electrodes. This segmentation allows the external connector to be replaced independently when worn, extending the trial period without requiring electrode removal. The modular design enables the system to maintain reliability by replacing only the external connector rather than the entire assembly.
Solution Approach 2:
The external connector assembly is designed as a disposable or replaceable component that can be discarded after a certain wear threshold is reached, while the implanted electrodes and percutaneous leads are recovered and reused. This approach extends the overall system duration by allowing multiple external connector replacements without affecting the durability of the implanted components.
2Ease of operation
If traditional connector systems are used, then electrodes can be connected to external stimulators, but the connector profile is high and occupies significant skin footprint
Solution Approach 1:
The external connector assembly utilizes the depth dimension by routing leads through a subcutaneous tunnel, allowing the connector to be positioned low on the skin surface. This dimensional approach moves the connector interface to a lower profile position while maintaining electrical connectivity, thereby reducing the skin footprint without compromising functionality.
Solution Approach 2:
The percutaneous leads are nested within the external connector assembly structure, with leads routed through internal channels and secured within the connector housing. This nesting arrangement allows the connector to maintain a compact, low-profile external appearance while accommodating the necessary electrical connections internally.
3Adaptability or versatility
If traditional connector systems are used, then electrodes can be tested initially, but the system is not easily expandable to accommodate additional electrodes
Solution Approach 1:
The external connector assembly is designed with universal interfaces and standardized lead connections that can accommodate varying numbers of electrodes. The connector structure includes multiple lead entry points and modular contact arrangements that can be configured for different electrode arrays, enabling system expansion without requiring custom connector designs for each application.
Solution Approach 2:
The connector system incorporates dynamic reconfigurability through modular lead arrangements and adjustable contact configurations. This allows the external connector to be reconfigured or expanded to accommodate additional electrodes or different electrode arrays, providing adaptability while maintaining a relatively simple base structure that can be modified as needed.
4Ease of operation
If traditional connector systems are used, then electrodes can be connected to external devices, but the system creates high risk for infection and trauma
Solution Approach 1:
The external connector assembly and percutaneous leads are extracted as separate, replaceable components that can be removed and replaced without disturbing the implanted electrodes. This extraction approach minimizes infection risk by allowing replacement of worn external components without reopening the surgical site or disturbing the implanted elements, thereby reducing trauma and infection pathways.
Solution Approach 2:
The connector system incorporates protective measures such as sealed connector interfaces, sterile barriers, and strain relief structures that prevent infection and trauma before they occur. The subcutaneous tunneling and secure lead fixation provide beforehand protection against mechanical trauma and bacterial contamination, reducing the harmful effects without compromising connector functionality.
Data Source
AI summary
A modular multi-channel inline connector system that connects an implanted electrode within a body of an organism, such as the human body, with a device located external to or implanted within the body. The modular multi-channel inline system comprises of a first lead operatively connected to the implanted electrode and to a first connector portion. A second lead is operatively connected to a second connector portion and operatively connected to the device. One of the first and second connector portions comprises a male connector and the other of the first and second connector portions comprises a female connector. The first and second connector portions are arranged to connect with each other and to be operatively located embedded within the body.