Curved butterfly bileaflet prosthetic cardiac valve

Patent · Tue Jun 25 00:00:00 EDT 1991

OSTI ID:867883

McQueen, David M ^[1]; Peskin, Charles S ^[2]

---

1. 185 Hillside Ave., Chatham, NJ 07928
2. 186 Harrard Dr., Hartsdale, NY 10530

An annular valve body having a central passageway for the flow of blood therethrough with two curved leaflets each of which is pivotally supported on an accentric positioned axis in the central passageway for moving between a closed position and an open position. The leaflets are curved in a plane normal to the eccentric axis and positioned with the convex side of the leaflets facing each other when the leaflets are in the open position. Various parameters such as the curvature of the leaflets, the location of the eccentric axis, and the maximum opening angle of the leaflets are optimized according to the following performance criteria: maximize the minimum peak velocity through the valve, maximize the net stroke volume, and minimize the mean forward pressure difference, thereby reducing thrombosis and improving the hemodynamic performance.

• Research Organization: New York Univ. (NYU), NY (United States)
• DOE Contract Number: AC02-76ER03077
• Assignee: McQueen, David M. (185 Hillside Ave., Chatham, NJ 07928);Peskin, Charles S. (186 Harrard Dr., Hartsdale, NY 10530)
• Patent Number(s): US 5026391
• Application Number: 07/434,621
• OSTI ID: 867883
• Country of Publication: United States
• Language: English

Related Subjects

curved
butterfly
bileaflet
prosthetic
cardiac
valve
annular
central
passageway
flow
blood
therethrough
leaflets
pivotally
supported
accentric
positioned
axis
moving
closed
position
plane
normal
eccentric
convex
facing
various
parameters
curvature
location
maximum
angle
optimized
according
following
performance
criteria
maximize
minimum
peak
velocity
net
stroke
volume
minimize
mean
forward
pressure
difference
reducing
thrombosis
improving
hemodynamic
central passage
central passageway
pivotally supported
plane normal
closed position
pressure difference
optimized according
annular valve
/623/137/