H - Electricity – 05 – B
Patent
H - Electricity
05
B
354/29
H05B 1/00 (2006.01) B26D 3/16 (2006.01) B26F 3/08 (2006.01) G05D 23/24 (2006.01)
Patent
CA 1191954
TITLE A Method of Monitoring the Temperature of a Sterile Docking Cutting Means ABSTRACT A method is disclosed for monitoring the temperature of a resistor-heated cutting means used in a sterile docking apparatus for splicing two sterile thermoplastic tubes together. The method comprises (1) supplying a constant current to the resistor; (2) measuring the initial voltage of the resistor; (3) calculating, according to predetermined empirical relationship(s), the voltage, time or both required to achieve a desired cutting means temperature if the initial voltage is within a suitable range; (4) measur- ing repeatedly the voltage of the resistor and the time to determine whether (a) the voltage reaches the cal- culated voltage within a specified time frame or (b) the calculated time has been reached within a specified voltage range; and (5) spicing the tubes with the cutting means if the time frame or voltage range is met.
434681
Luoma Robert P. II
Roxlo Helen E.
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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