Surgery – Instruments – Internal pressure applicator
Patent
1989-03-14
1990-07-31
Cohen, Lee S.
Surgery
Instruments
Internal pressure applicator
606194, A61M 2902
Patent
active
049447467
ABSTRACT:
An apparatus for separating a balloon from a catheter member of a balloon is capable of melting and breaking a heat-meltable connecting member through which the balloon is connected to the catheter body by causing an electric current to flow between at least a pair of electrodes arranged on or in the vicinity of the connecting member. The apparatus has impedance measuring means for measuring the impedance of an electrode circuit including a pair of electrodes and lead lines connected to the electrodes, and judging means for comparing the measured value of the impedance with a predetermined reference range and capable of producing an abnormal signal when the measured value of the impedance does not fall within the predetermined reference range. The apparatus enables the operator to judge whether the electrode circuit is in safe condition, before changing the balloon with a settable liquid and to charge a settable liquid into the balloon only when the safe condition of the electrode circuit is confirmed, so that the balloon after the setting of the liquid can be separated from the catheter body without fail, thus eliminating any risk for the catheter body to dangerously remain in the living body.
REFERENCES:
patent: Re32348 (1987-02-01), Pevsner
patent: 4341218 (1982-07-01), 604 97
Goto Yasuhiro
Iwata Hiroo
Kikuchi Haruhiko
Matsuda Takehisa
Taki Waro
Cohen Lee S.
Kabushiki-Kaisha Tokai-Rika-Denki-Seisakusho
Schaetzle Kennedy J.
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