Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Heart valve with rectangular orifice










Image Number 4 for United States Patent #6699283.

A mechanical heart valve prosthesis has a generally rectangular orifice and two leaflets that move between a closed position nearly perpendicular to blood flow and an open position nearly parallel to blood flow. Due to the uniform dimension of a rectangle, the leaflets are hinged at the periphery of the orifice, and present a single large central flow region to the blood when opened. The base provides several means of constraining the leaflet rotation during opening and closing.








 
 
  Recently Added Patents
Integrated testing circuitry for high-frequency receiver integrated circuits
Vehicle motion control device
MOS resistor apparatus and methods
Computer program and apparatus for evaluating signal propagation delays
Controller interface providing improved data reliability
Linear book scanner
Semiconductor device with an amorphous semi-insulating layer, temperature sensor, and method of manufacturing a semiconductor device
  Randomly Featured Patents
Method for fabricating vertical bipolar junction transistors in silicon bonded to an insulator
Apparatus for analyzing biological samples
Multiaxis rotational molding method
Vending apparatus with intelligent dispensation control
Multilevel cascade voltage source inverter with seperate DC sources
Interconnect structures for substrate
Simultaneous metering modes in cameras using audio output
Fluid control system for tractor trailer brake system
Laser machining apparatus
Branched chain olefinic alcohols, thiols, esters and ethers, organoleptic uses thereof, processes for preparing same and intermediates therefor