Fast-Flush Drug Delivery Device Leak Testing



The Challenge

Fast-flush drug delivery device leak testing is a complex process.  Drug delivery devices typically have an inlet and outlet port, a flow restrictor, and a valve to bypass the restrictor. Makers and suppliers of these devices must ensure correct operation and integrity.

Challenge #1: Find all the right equipment to measure very low flow, high-flow, valve re-seating, valve leakage, and body leaks in the product.

Challenge #2: Organize the equipment into one integrated test. Sometimes accomplished with computers and programmable logic controllers, this can be a formidable task. The resulting group of equipment can be bulky, difficult to calibrate, hard to operate and a burden to keep maintained.

The Sprint iQ Solution for leak testing Fast-Flush Delivery Devices

The Sprint iQ is the only off-the-shelf answer to fast-flush drug delivery device leak testing. No other tester in the world is manufactured to meet the demands of this specific product test.  Incorporating a pressure sensor, two precision mass flow transducers, valving and logic control; the Sprint iQ handles the complex device testing routing in one small and easy-to program tester. With the press of Sprint iQ’s start button, the six-step test performs:

  1. a leak test using flow
  2. a low flow test
  3. a high flow test
  4. a second low flow test
  5. a deviation limit evaluation
  6. a “roll over” or actuator manipulation test

How Sprint iQ Leak Tester Works


The Sprint iQ tester works like this:

  • The product is attached to both test ports and Sprint iQ is started by the operator or automated equipment. Air is routed to both Port 1 and Port 2 to conduct a leak test on the product body. (Figure 1)
  • Air is routed to Port 1 through the restrictor and out to atmosphere through valve V2. Low flow is measured with Sprint iQ’s low-range flow transducer [F1].
  • The product’s flush valve [FF] is activated by the operator or automated fixturing. The resulting high flow is measured with Sprint iQ’s high-range flow transducer [F2].
  • Sprint iQ performs a second low-flow test.
  • Sprint iQ compares the first low flow to the second low flow to make sure the flush valve [FF] has properly reseated in the device being tested.

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