27-06-2013 дата публикации
Номер: US20130165905A1
A safety catheter includes a flexible, multi-lumen shaft having an outer diameter, a distal tip, a proximal catheter end with a drain end and a proximal inflation end. The multi-lumen shaft defines a drain lumen, a distal hollow balloon portion, at least one inflation lumen, and a drainage port. A hollow stretch valve is coaxially disposed in the inflation or drainage lumen, or both, has a fixed portion within the inflation or drainage lumen, or both, and prevents fluid from passing through the drainage port in a steady state and has a sliding portion slidably disposed within the inflation or drainage lumen, or both, such that, in a stretched state when the proximal catheter end is stretched, the sliding portion slides within the inflation or drainage lumen, or both to permit fluid to pass through the balloon drainage port and/or wall of the catheter. 1. A safety catheter , comprising: a drain lumen extending through the shaft and operable to drain fluid adjacent the distal tip therethrough and out the proximal drain end;', 'a distal hollow balloon portion defining a balloon interior and having at least one inflation port fluidically connected to the balloon interior, the balloon portion operable to be inflated outwardly through the at least one inflation port to a diameter greater than the outer diameter of the shaft;', 'at least one inflation lumen parallel to the drain lumen and fluidically connected to the at least one inflation port, the at least one inflation lumen operable to inflate the balloon interior with an inflation fluid; and', the drain lumen; and', 'the environment of the balloon portion; and, 'a drainage port fluidically connecting at least one of the balloon interior and the at least one inflation lumen to at least one of], 'a flexible, multi-lumen shaft having an outer diameter, a distal tip, a proximal shaft portion, and a proximal catheter end with a proximal drain end and a proximal inflation end, the multi-lumen shaft defining coaxially ...
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