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
Management of memory array with magnetic random access memory (MRAM)
Pointing device, display apparatus and pointing system, and location data generation method and display method using the same
Upper surface of a skateboard deck
Electrical installation arrangement
Polyamide compositions
Antibodies to non-functional P2X.sub.7 receptor
Vehicles with electric motor
  Randomly Featured Patents
Bleed leak detection system
Multi-function desk accessory
Non-volatile memory with background data latch caching during erase operations
Optical pick-up feeding device
Railroad restaurant
Chlorine-free solid rocket propellant for space boosters
Carbon black filter means for a Diesel engine
Hybrid automatic repeat request (HARQ) scheme with in-sequence delivery of packets
System for manufacturing semiconductor substrates
Additive-containing polyolefin beads and process for their preparation