Drive catheter having helical pump drive shaft
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United States of America Patent
Stats
-
Aug 15, 1989
Grant Date -
N/A
app pub date -
Oct 21, 1987
filing date -
Oct 21, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A flexible drive catheter for removing deposits from the inner walls of a blood vessel to increase blood flow through the vessel. The catheter includes an outer sheath and a rotatable core coupled to a distal tip which directly contacts the deposits. An outer surface of the rotatable core defines a screw pump for moving dislodged deposits away from the blood vessel through the catheter sheath to a bifurcating adapter located outside the patient. One opening in the adapter accommodates the rotatable core and a second opening provides a method of monitoring blood pressure in the blood vessel, removing dislodged deposits from the catheter and injecting flushing liquids or clotting control agents into the blood vessel.
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