Systems and methods for fast discharge in pacing circuits during RF interference
First Claim
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1. A cardiac pacing system comprising:
- a right atrial ring electrode;
a right atrial tip electrode;
a right ventricle ring electrode; and
a pacing integrated circuit (IC) comprising;
a first pace output node electrically coupled to the right atrial ring electrode;
a pace return node electrically coupled to the right atrial tip electrode; and
a second pace output node electrically coupled to the right ventricle ring electrode,wherein there is no switch and no other connection in the pacing IC from the first pace output node to ground, and wherein there is no switch and no other connection in the pacing IC from the pace return node to ground, such that the pacing IC has a floating fast discharge configuration that facilitates eliminating a DC rectification current generated from RF interference during a fast discharge phase.
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Abstract
The present disclosure provides a cardiac pacing system. The cardiac pacing system includes a right atrial ring electrode, a right atrial tip electrode, a right ventricle ring electrode, and a pacing integrated circuit (IC) including a first pace output node electrically coupled to the right atrial ring electrode, a pace return node electrically coupled to the right atrial tip electrode, and a second pace output node electrically coupled to the right ventricle ring electrode, wherein the pacing IC has a fast discharge configuration that facilitates reducing or eliminating a DC rectification current generated from RF interference during a fast discharge phase.
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Citations
16 Claims
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1. A cardiac pacing system comprising:
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a right atrial ring electrode; a right atrial tip electrode; a right ventricle ring electrode; and a pacing integrated circuit (IC) comprising; a first pace output node electrically coupled to the right atrial ring electrode; a pace return node electrically coupled to the right atrial tip electrode; and a second pace output node electrically coupled to the right ventricle ring electrode, wherein there is no switch and no other connection in the pacing IC from the first pace output node to ground, and wherein there is no switch and no other connection in the pacing IC from the pace return node to ground, such that the pacing IC has a floating fast discharge configuration that facilitates eliminating a DC rectification current generated from RF interference during a fast discharge phase. - View Dependent Claims (2, 3, 4)
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5. A cardiac pacing system comprising:
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a right atrial ring electrode; a right atrial tip electrode; a right ventricle ring electrode; and a pacing integrated circuit (IC) comprising; a first pace output node electrically coupled to the right atrial ring electrode; a pace return node electrically coupled to the right atrial tip electrode; and a second pace output node electrically coupled to the right ventricle ring electrode, wherein, in the pacing IC, the first pace output node and the pace return node are connected to ground through a high-impedance switch having a resistance greater than 10 kili-ohms, such that the pacing IC has a semi-floating fast discharge configuration that facilitates reducing a DC rectification current generated from RF interference during a fast discharge phase. - View Dependent Claims (6, 7, 8)
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9. A pacing integrated circuit (IC) for use in a cardiac pacing system, the pacing IC comprising:
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a first pacing output node configured to be electrically coupled to a right atrial ring electrode; a pace return node configured to be electrically coupled to a right atrial tip electrode; and a second pace output node configured to be electrically coupled to a right ventricle ring electrode, wherein, in the pacing IC, the first pace output node and the pace return node are connected to ground through a high-impedance switch having a resistance greater than 10 kili-ohms, such that the pacing IC has a semi-floating fast discharge configuration that facilitates reducing a DC rectification current generated from RF interference during a fast discharge phase. - View Dependent Claims (10, 11, 12)
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13. A pacing integrated circuit (IC) for use in a cardiac pacing system, the pacing IC comprising:
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a first pacing output node configured to be electrically coupled to a right atrial ring electrode; a pace return node configured to be electrically coupled to a right atrial tip electrode; and a second pace output node configured to be electrically coupled to a right ventricle ring electrode, wherein there is no switch and no other connection in the pacing IC from the first pace output node to ground, and wherein there is no switch and no other connection in the pacing IC from the pace return node to ground, such that the pacing IC has a floating fast discharge configuration that facilitates eliminating a DC rectification current generated from RF interference during a fast discharge phase. - View Dependent Claims (14, 15, 16)
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Specification