Resources Contact Us Home
Method and apparatus for noninvasive determination of peripheral arterial lumenal area

Image Number 11 for United States Patent #6309359.

An occlusive cuff is placed around a limb (e.g. an arm) of a patient. A fluid, such as air, is pumped into the cuff, and the pressure in the cuff is measured. The pressure variation in the cuff with respect to time is caused by the pump and expansion/contraction of the arm caused by blood being pumped therethrough by the patient's heart. This variation in pressure is used to calculate systolic and diastolic pressure, artery lumen area compliance and artery volume compliance, artery lumen area, and the blood flow rate through the patient's arteries (e.g. the brachial artery for the case of the patient's arm, or the femoral artery or the case of the patient's leg).

  Recently Added Patents
Reconfigurable barrel shifter and rotator
Nitride semiconductor laser device
Microwavable bag
Light barrier and method for detecting objects
Hydrolases, nucleic acids encoding them and methods for making and using them
Methods and apparatuses for configuring and operating graphics processing units
  Randomly Featured Patents
Ethanol-free liquid laundry detergent compositions
Transaction system for transporting media files from content provider sources to home entertainment devices
Liquid, UV-hardenable coating agent and binder
Securing mechanism of the base of safety car seat
Independent gate control logic circuitry
Telescopic security box system
Apparatus and method for testing spring powered switches
Surgical method
Interior surface for a squash court
Information storage medium and information recording/playback system