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Radiation Products Design does fiber optic inspection of tungsten shielding inside of the ovoid. We can detect if the tungsten shields are mounted at the top and the bottom of the ovoid.
The following tests can be conducted at Radiation Products Design or within your organization:
Separate the Fletcher-Suit-Delclos (FSD) Applicator into two halves and conduct Tests A, B, C and D on each half as follows:
Mechanical Test A Gently manipulate each ovoid with one hand while holding the ovoid handle with the other. Each ovoid should be solidly attached to the handle. If the ovoid is loose, Test A fails and unit may be repaired, no other tests need to be done. If test A passes, continue to Test B.
Visual Test B Visually inspect each half of the FSD for hairline cracks at the top and bottom of the ovoid and the ovoid handle joint. Inspect silver-brazed joints where center pivots and the locking brackets attach to the ovoid handles. If cracks are seen, Test B fails and unit may be repaired, no other tests need to be done. If Test B passes, continue to Test C.
Pressure Test C Conduct the following test on each half of the FSD: Test 1: Remove the ovoid handle cap from the end of the ovoid handle Test 2: Remove the bucket carrier Test 3: Stand the ovoid in a cup of water to a depth above the ovoid handle joint Test 4: Apply slight air pressure on the open end of the FSD handle (using for example, a 20 cc syringe connected to surgical tubing connected to the FSD handle), and look for air bubbles escaping from the ovoid or ovoid handle joint. If bubbles are seen, Test C fails and unit may be repaired. If Test C passes, the ovoid is solidly attached to the ovoid handle and no immediate action is necessary.
Fiber Optics or Radiograph Test D Use fiber optic inspection for tungsten placement or radiograph using film.
If Tests A, B, C or D fails stop using the FSD for patient therapy.
Send complete units in for repair, including the bucket carriers, to Radiation Products Design. When sending in an applicator the following information is needed: contact name, phone number and address. Other repairs are also available, if not listed below, please call for more information.
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