Biostimulator circuit with flying cell
First Claim
1. A leadless cardiac pacemaker, comprising:
- pacing electronics;
a tip electrode electrically coupled to the pacing electronics;
a cell housing;
an energy source disposed in the cell housing, a negative terminal of the energy source being electrically connected to the cell housing, wherein;
during a first state;
the pacing electronics are powered by the energy source;
the energy source charges at least a first capacitor; and
the energy source charges a second capacitor; and
during a second state;
the first capacitor is disconnected from the energy source;
the pacing electronics are electrically disconnected from the energy source and the pacing electronics are powered by the first capacitor; and
the second capacitor is discharged into the cell housing, resulting in an electrical circuit where the cell housing becomes a positive terminal of the electrical circuit with respect to a negative terminal of the electrical circuit formed at the tip electrode.
2 Assignments
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Accused Products
Abstract
A leadless cardiac pacemaker is provided which can include any number of features. In one embodiment, the pacemaker can include a tip electrode, pacing electronics disposed on a p-type substrate in an electronics housing, the pacing electronics being electrically connected to the tip electrode, an energy source disposed in a cell housing, the energy source comprising a negative terminal electrically connected to the cell housing and a positive terminal electrically connected to the pacing electronics, wherein the pacing electronics are configured to drive the tip electrode negative with respect to the cell housing during a stimulation pulse. The pacemaker advantageously allows p-type pacing electronics to drive a tip electrode negative with respect to the can electrode when the can electrode is directly connected to a negative terminal of the cell. Methods of use are also provided.
576 Citations
13 Claims
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1. A leadless cardiac pacemaker, comprising:
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pacing electronics; a tip electrode electrically coupled to the pacing electronics; a cell housing; an energy source disposed in the cell housing, a negative terminal of the energy source being electrically connected to the cell housing, wherein; during a first state; the pacing electronics are powered by the energy source; the energy source charges at least a first capacitor; and the energy source charges a second capacitor; and during a second state; the first capacitor is disconnected from the energy source; the pacing electronics are electrically disconnected from the energy source and the pacing electronics are powered by the first capacitor; and the second capacitor is discharged into the cell housing, resulting in an electrical circuit where the cell housing becomes a positive terminal of the electrical circuit with respect to a negative terminal of the electrical circuit formed at the tip electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A leadless cardiac pacemaker, comprising:
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a tip electrode; pacing electronics disposed on a p-type substrate; and an energy source disposed in a cell housing, wherein; during a first state, the energy source powers the pacing electronics and charges a first capacitor and a second capacitor, and wherein the energy source, the first capacitor, and the second capacitor are electrically disconnected from the tip electrode; and during a second state, the first capacitor is electrically connected to the pacing electronics and powers the pacing electronics, the first capacitor being electrically disconnected from the energy source and the tip electrode, while the second capacitor is discharged into the cell housing, resulting in a circuit where the cell housing becomes a positive terminal of the circuit with respect to a negative terminal formed at the tip electrode. - View Dependent Claims (11, 12, 13)
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Specification