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Guided Assembly of Catheters




Lasso Catheter


Challenge




Customer needed a guided assembly tool, and final test solution for a medical catheter which has numerous conductive rings at its end.   Each ring connects to individual points on a connector at the catheter base.   Because of the wide tolerance of the positioning of the rings pogo pins could not be used in the fixturing.   Production volume is such that an automated fixture was desired to meet required throughput.

Touch 1 Test Lasso Catheters


Solution




Because it is not practical to accurately position the catheter in a way to touch each ring with a pogo pin, a fixture was made utilizing a conductive elastomer.  The catheter end is loaded into a pneumatic fixture which closes it down on the conductive elastomer.  A script determines which wire each ring of the catheter is connected to, allowing the operator to probe the other end of the wire to correctly terminate it into the connector.



Touch 1 Test Lasso Catheters


Results




The assembly time was reduced for each catheter from appx. 45 mins. To 1.5 mins, resulting in a substantial throughput improvement for the customer.

Cirris Systems - Success Stories - Catheter Testing.

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