Pulsatile flow system and method
First Claim
1. A pulsatile flow system, comprising:
- a reservoir;
a pressure riser;
a first fluid passage connected between the reservoir and the pressure riser;
a device adapted to expel fluid from the reservoir through the first fluid passage to the pressure riser; and
a second fluid passage connected between the pressure riser and the reservoir, the second fluid passage adapted to allow fluid to flow unidirectionally therethrough, from the pressure riser to the reservoir.
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Accused Products
Abstract
The present invention relates to a pulsatile flow system and method. The pulsatile flow system includes a reservoir, a pressure riser and a first fluid passage connected between the reservoir and the pressure riser. The system further includes a device adapted to expel fluid from the reservoir through the first fluid passage to the pressure riser. A second fluid passage is connected between the pressure riser and the reservoir, and is adapted to allow fluid to flow unidirectionally therethrough, from the pressure riser to the reservoir. The pulsatile flow system may be adapted to provide pulsatile fluid flow through a medical device, such as a ventricle assist device or mechanical heart valve, to replicate a heart'"'"'s pumping action for testing the device.
37 Citations
33 Claims
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1. A pulsatile flow system, comprising:
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a reservoir; a pressure riser; a first fluid passage connected between the reservoir and the pressure riser; a device adapted to expel fluid from the reservoir through the first fluid passage to the pressure riser; and a second fluid passage connected between the pressure riser and the reservoir, the second fluid passage adapted to allow fluid to flow unidirectionally therethrough, from the pressure riser to the reservoir. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A pulsatile flow system, comprising:
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a reservoir; a pressure riser; first means for connecting at least one ventricle assist device between the reservoir and the pressure riser so as to establish a flow path therethrough; second means for expelling fluid from the reservoir through the first fluid passage to the pressure riser; and a second fluid passage connected between the pressure riser and the reservoir, the second fluid passage including third means for allowing unidirectional flow therethrough, from the pressure riser to the reservoir. - View Dependent Claims (26, 27)
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28. A method of providing a pulsatile fluid flow, comprising:
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applying a force to fluid contained in a reservoir to expel fluid from the reservoir through a first flow passage to a pressure riser containing fluid, such that the level of the fluid contained in the pressure riser increases; preventing fluid flow through a second flow passage between the pressure riser the reservoir; removing the force from the fluid contained in the reservoir; and permitting fluid flow through the second flow passage from the pressure riser to the reservoir. - View Dependent Claims (29, 30, 31)
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32. A method of life testing a ventricle assist device including an inlet and an outlet, comprising:
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connecting the inlet to a reservoir containing fluid; connecting the outlet to a pressure riser containing fluid; applying a force to the fluid in the reservoir to expel fluid from the reservoir, through the ventricle assist device, to the pressure riser; preventing fluid flow from the pressure riser to the reservoir through a return passage; removing the force from the fluid in the reservoir; and permitting fluid flow through the return passage from the pressure riser to the reservoir. - View Dependent Claims (33)
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Specification