{HEAD ~ A method} for {TAIL ~ therapeutic treatment} 37 wherein the shaft has a lumen and the intervention site is treated by introducing a balloon dilitation catheter distally through the lumen until the balloon lies across the treatment site and then inflating the balloon 
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{ HEAD ~ A method } for { TAIL ~ therapeutic treatment } 37 wherein the shaft has a lumen and the intervention site is treated by introducing a balloon dilitation catheter distally through the lumen until the balloon lies across the treatment site and then inflating the balloon
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