Multi-channel transmission cabling solution

Multi-channel transmission cabling solution

November 9, 2018

Design Components

A breakthrough in the design of medical device cables is the major step toward thinner, more flexible and higher capacity data signals used in catheters. The innovation, named multi-channel transmission (MCT), is set to challenge existing twisted pair coaxial and flexible printed circuit (FPC) technology and will enable new data-rich signals to be utilized in therapies including intracardiac echocardiogram, ultrasound endoscopy, and intervascular ultrasound (IVUS).

The release of this product is an innovation that will enable a new generation of small, flexible, and intelligent catheters to effectively push back the boundaries of current medical procedures.

Existing catheters use twisted pair coaxial constructs to support signals along the device. This established technology has driven advances in catheter design and facilitated the delivery of many essential interventional, intervascular diagnostics and therapies. However, both progress of miniaturization and flexibility has been hampered by the standard coaxial approach which comprises a core conductor, insulation and a shield wire. Physics and electromagnetics have prevented the development of smaller cables and has inhibited catheter flexibility.

In contrast, the new MCT cable design uses a cluster of simple microwires that are individually insulated with an innovative shielding/grounding construct, therefore increasing its signal capacity for a given size. Whilst the traditional catheter requires four coaxial cables to run in parallel carrying four individual signal streams, the MCT solution enables multiples of four signals to be brought together in one cable, therefore quadrupling the capacity. The benefits of this innovation are additionally demonstrated in the reduced size of the catheter that is delivered.

Early Junkosha prototypes have achieved a crucial 32% reduction in the size of the cable, a critical factor in the attainment of future procedures within narrower vessels. The MCT approach also provides a greater degree of flexibility compared to the existing approaches which promises major advances in the scope of medical procedures, especially within Endoscopy. Overall, this innovation addresses the mutually exclusive needs of small size and signal integrity simultaneously. This in turn unlocks opportunities for catheter manufacturers to deliver valuable, previously unrealized options, to clinicians.