Title:
心臓ペーシングシステムにおける自動捕捉しきい値検出のためのペーシング出力結合コンデンサ
Document Type and Number:
Japanese Patent JP4128332
Kind Code:
B2
Abstract:
A method and apparatus for attenuating polarization voltages or "afterpotentials" which develop at the heart tissue/electrode interface following the delivery of a pacing stimulus to the heart tissue such that the evoked response of the heart may be accurately detected to determine whether each pacing stimulus resulted in heart capture or contraction, thereby facilitating improved tracking of the capture threshold and minimizing power consumption while assuring therapeutic efficacy. The conventional large capacitance coupling capacitor used to suppress DC components of the pacing spike has another, much lower capacitance capacitor connected in series with it. The lower capacitance capacitor may be operable in either the autothreshold mode or in the normal pacing mode such that its value can be selectively inserted in series with the larger capacitance coupling capacitor to effectively lower the overall capacitance of the coupling capacitor following delivery of the pacing stimulus.
Inventors:
Two, Kin Shen
Spinelli, Giulio, Sea
Spinelli, Giulio, Sea
Application Number:
JP2000551847A
Publication Date:
July 30, 2008
Filing Date:
June 01, 1999
Export Citation:
Assignee:
CARDIAC PACEMAKERS,INC.
International Classes:
A61N1/365; A61N1/37
Domestic Patent References:
| JP10509079A |
Foreign References:
| WO1996015827A1 |
Attorney, Agent or Firm:
Takehiro Chiba
Tatsuhiko Sato
Tatsuhiko Sato