Beng100HW1 - Piyush Goyal A92051318 #3) Stent a) A stent is...

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Piyush Goyal A92051318 #3) Stent a) A stent is a tube that is inserted into the vessels and arteries of the human body to allow access for surgery. Alternative #1: The Z-stent: Manufacturer: Cook Medical Model #’s: G24856, G24857, G24858, G24859, G24860 Description: series of 2cm cages that expand into a caged tube 25 mm in diameter, and is widened at the end to allow for anchoring. The actual Z stent can be manufactured with varying dimensions depending on need of use. Alternative #2: The Ultraflex stent: Manufacturer: Boston Scientific Model: Esophageal NG Stent System Description: made of an alloy that after being heated will revert back to its original shape. Rather than caged, this design is “knitted” closely together also with widened ends. Also this stent contains a number of visual markers to allow for visual measurements. Alternative #3: The Wallstent: Manufacturer: Boston Scientific Model: RX Biliary Endoprosthesis Description: Similar to the Z stent, however is designed to be MRI safe and the outer cage is “braided” as well. b) Goals that these designs should achieve: Goal #1: ease of insertion Goal #2: ease of use Goal #3: stability: anchoring, movement Goal #4: Can be sterilized, safe to insert and will not cause infection Goal #5: can be used in conjunction with other procedures c-d) Design Goal #1 #2 #3 #4 #5 Total WF Design Goal #1 - 1 1 0 1 3 80 #2 0- 0 0 1 1 40 #3 0 1- 0 1 1 40 #4 1 1 1- 1 4 100 #5 0 0 0 0- 0 10
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e-f) Design Goal #1 #2 #3 #4 #5
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Beng100HW1 - Piyush Goyal A92051318 #3) Stent a) A stent is...

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