Automated fluid pressure control system

Details Automated fluid pressure control system Automated fluid pressure control system

A - Human Necessities

61

M

A61M 37/00 (2006.01) A61M 25/10 (2006.01)

Patent

CA 2101113

- 24 - ABSTRACT Providing fluid to an internal delivery site of a patient includes moving the fluid from a fluid reservoir through & conduit and through a delivery device at the delivery site while maintaining the fluid at a predetermined pressure. The delivery device may comprise an inflatable balloon with apertures formed in its periphery for directing the fluid into the vessel walls. Pressurized fluid is provided through the apertures of the balloon to the vessel wall. The pressure is automatically controlled to avoid both pressure spikes and unacceptable deflation of the balloon during administration of the fluid. A further feature includes comparing the pressure with the volume infused and in the event that pressure decreases while the volume infused increases beyond certain limits, the delivery of the fluid is stopped. Further features include a timer for limiting the inflation time of the delivery device and a volume detector for controlling the amount of fluid delivered. In one described embodiment, a pneumatic driver system is used to pressurize the fluid.

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