Patent ID: 7361306

Claim:
A device for measuring the coagulation time and platelet activity in a blood sample, comprising: A) electric motor means for providing a rotational movement, said motor means further including means for sensing and controlling the speed of said rotational movement, which is proportional to the current drawn from an electric power source; B) rotor means having a substantially frustoconical shape, said rotor means being coupled to said motor means for receiving said rotational movement; C) a stationary frustoconical cup member coaxially housing said rotor means so that a surface gap is defined between said rotor means and said cup member; D) container means disposed within the rotor means for receiving a predetermined amount of a blood sample and coagulation reactant, wherein said container means includes conduit means with at least one transversal outlet cooperatively disposed to deposit a predetermined amount of said blood sample and reactant in said gap; E) control circuit means for measuring the changes of said rotational movement over predetermined periods of time to determine frictional forces related to the clotting of said sample of blood and reactant in said gap; and F) means for controlling and keeping the temperature of said device over a predetermined range.