Heart booster pump

Details Heart booster pump Heart booster pump

2007-05-17

2009-12-01

Kramer, Devon C (Department: 3746)

Pumps

Condition responsive control of drive transmission or pump...

Disconnectable drive element

C417S212000, C092S140000, C074S025000, C604S152000

Reexamination Certificate

active

07625188

ABSTRACT:
A heart pump has a pump chamber and a pump element that strokes between a retracted and an extended position. A motor rotates a drive shaft in a single direction. A reversing mechanism coupled between the drive shaft of the motor and the pump element converts rotary motion of the drive shaft to reciprocal stroking movement of the pump element. A mechanical stroke length controller connected to the reversing mechanism varies the stroke length in response to changes in fluid pressure in the pump chamber.

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patent: 6948460 (2005-09-01), Dow
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