Dual-chamber pacemaker system for simultaneous bi-chamber pacing and sensing
First Claim
1. A method of pacing opposing chambers of a heart with a pacing system, the pacing system comprising a first unipolar medical electrical lead having at least one first electrode configured for positioning in a first opposing chamber of the heart, a second unipolar medical electrical lead having at least one second electrode configured for positioning in a second opposing chamber of the heart, an implantable pulse generator operably connected to the first and second unipolar medical electrical leads, the implantable pulse generator further comprising an hermetically sealed housing capable at serving as a can electrode, and means for switching electrode configurations between the first electrode and the can electrode, between the second electrode and the can electrode, between the first electrode and the second electrode and between the second electrode and the first electrode, the method comprising:
- determining a primary electrode configuration;
selecting a cathode from the first electrode, the second electrode and the can electrode based on the primary electrode configuration;
selecting an anode from the first electrode, the second electrode and the can electrode based on the primary electrode configuration;
delivering a first pulse between the cathode and the anode;
determining a first threshold of the first opposing chamber;
determining a second threshold of the second opposing chamber; and
selecting the first electrode as the cathode if the first threshold is higher than the second threshold.
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Accused Products
Abstract
A method of pacing opposing chambers of a heart with a pacing system is provided. The pacing system comprises a first unipolar medical electrical lead having at least one first electrode configured for positioning in a first opposing chamber of the heart, a second unipolar medical electrical lead having at least one second electrode configured for positioning in a second opposing chamber of the heart, an implantable pulse generator operably connected to the first and second unipolar medical electrical leads. The implantable pulse generator further comprises an hermetically sealed housing capable of serving as a can electrode, and means for switching electrode configurations between the first electrode and the can electrode, between the second electrode and the can electrode, between the first electrode and the second electrode and between the second electrode and the first electrode. A primary electrode configuration is determined. A cathode is selected from the first electrode, the second electrode and the can electrode based on the primary electrode configuration. An anode is selected from the first electrode, the second electrode and the can electrode based on the primary electrode configuration. A first pulse is delivered between the cathode and the anode. Systems, programs and devices using the method are also provided.
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Citations
19 Claims
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1. A method of pacing opposing chambers of a heart with a pacing system, the pacing system comprising a first unipolar medical electrical lead having at least one first electrode configured for positioning in a first opposing chamber of the heart, a second unipolar medical electrical lead having at least one second electrode configured for positioning in a second opposing chamber of the heart, an implantable pulse generator operably connected to the first and second unipolar medical electrical leads, the implantable pulse generator further comprising an hermetically sealed housing capable at serving as a can electrode, and means for switching electrode configurations between the first electrode and the can electrode, between the second electrode and the can electrode, between the first electrode and the second electrode and between the second electrode and the first electrode, the method comprising:
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determining a primary electrode configuration;
selecting a cathode from the first electrode, the second electrode and the can electrode based on the primary electrode configuration;
selecting an anode from the first electrode, the second electrode and the can electrode based on the primary electrode configuration;
delivering a first pulse between the cathode and the anode;
determining a first threshold of the first opposing chamber;
determining a second threshold of the second opposing chamber; and
selecting the first electrode as the cathode if the first threshold is higher than the second threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of pacing opposing chambers of a heart with a pacing system, the pacing system comprising a first unipolar medical electrical load having at least one first electrode configured for positioning in a first opposing chamber of the heart, a second unipolar medical electrical lead having at least one second electrode configured for positioning in a second opposing chamber of the heart, an implantable pulse generator operably connected to the first and second unipolar medical electrical leads, the implantable pulse generator further comprising an hermetically sealed housing capable of serving as a can electrode, the method comprising:
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determining a primary electrode configuration;
selecting a cathode from the first electrode, the second electrode and the can electrode based on the primary electrode configuration;
selecting an anode from the first electrode, the second electrode and the can electrode based on the primary electrode configuration;
delivering a first pulse between the cathode and the anode;
determining a first threshold of the first opposing chamber;
determining a second threshold of the second opposing chamber; and
selecting the first electrode as the cathode if the first threshold is higher than the second threshold. - View Dependent Claims (9, 10, 11, 12, 13)
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14. An implantable medical system, comprising:
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a pulse generator;
a first unipolar medical electrical lead operably connected to the pulse generator, the first unipolar medical electrical lead having at least one first electrode configured for positioning in a first opposing chamber of the heart;
a second unipolar medical electrical lead operably connected to the pulse generator, the second unipolar medical electrical lead having at least one second electrode configured for positioning in a second opposing chamber of the heart;
selecting means for selecting at least one of the first electrode, the second electrode and the can electrode, wherein a primary electrode configuration is determined and a cathode is selected with the selecting means, an anode is selected with the selecting means and a pulse is delivered by the pulse generator between the cathode and the anode;
means for determining a first threshold of the first opposing chamber;
means for determining a second threshold of the second opposing chamber; and
means for selecting the first electrode as the cathode if the first threshold is higher than the second threshold. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification