Method and apparatus for cardiac pacing in accordance with multiple pacing therapy features
First Claim
1. A method of operating a cardiac pacemaker having at least two pacing therapy features wherein said pacing therapy features can be active simultaneously and when active simultaneously said simultaneously active pacing therapy features are then capable of causing a common operational parameter of the pacemaker to be periodically adjusted during a parameter adjustment cycle, comprising the steps of:
- (a) assigning a relative priority to each of said at least two pacing therapy features; and
(b) during said parameter adjustment cycle, if said common operational parameter is adjusted in accordance with one of said at least two pacing therapy features, preventing adjustment of said common operational parameter in accordance with any features of lower priority than said one of said at least two pacing therapy features during said each cycle.
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Accused Products
Abstract
A method and apparatus for the simultaneous administration of multiple pacing therapies in which two or more pacing features which operate to cause the dynamic adjustment of a common operational parameter of a pacing system are activatable at the same time. In one embodiment, a prioritization among multiple pacing features is established, such that when two (or more) features which operate to cause adjustment of a common operational parameter, a lower-priority feature will not override an adjustment made by any higher-priority feature.
85 Citations
26 Claims
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1. A method of operating a cardiac pacemaker having at least two pacing therapy features wherein said pacing therapy features can be active simultaneously and when active simultaneously said simultaneously active pacing therapy features are then capable of causing a common operational parameter of the pacemaker to be periodically adjusted during a parameter adjustment cycle, comprising the steps of:
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(a) assigning a relative priority to each of said at least two pacing therapy features; and (b) during said parameter adjustment cycle, if said common operational parameter is adjusted in accordance with one of said at least two pacing therapy features, preventing adjustment of said common operational parameter in accordance with any features of lower priority than said one of said at least two pacing therapy features during said each cycle. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An implantable medical device comprising a memory for maintaining parameters of variable value called operational parameters said operational parameters being accessible to a set of pacing therapy features of said implantable medical device that can access said parameters to cause said operational parameters to change in value if at least one of said set of therapy feature determines a change in one of said operational parameter values is warranted and wherein said chance can be made during a periodic parameter adjustment cycle, wherein if a quality of operation of at least two of said set of pacing therapy features depends on said operational parameter value then such said common operational parameter is a common operational parameter considered shared by said at least two pacing therapy features, and wherein said implantable medical device comprises;
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a pacing output circuit for generating cardiac stimulating pulses in response to pacing trigger signals; a pacing program responsive to said values of said common operational parameters accessible to said pacing program; control circuitry, coupled to said pacing output circuit, for issuing said pacing trigger signals in accordance with said pacing program, sensing circuitry, coupled to said control circuitry, for generating sensing signals indicative of detection of cardiac electrical events;
wherein said implantable medical device pacing program further comprises;algorithmic means for managing access to said common operational parameter by said at least two of said pacing therapy features wherein said management includes limiting access of said at least two pacing therapy features to said common operational parameter; and wherein said at least two pacing therapy features are managed by said pacing program wherein said at least two pacing therapy features have relative priority with respect to one another, wherein during each parameter adjustment cycle, if said common operational parameter is accessed and changed by a first of said at least two pacing therapy features, change of said common operational parameter by any other than said first of said at least two pacing therapy features of a lower relative priority is not permitted. - View Dependent Claims (8, 9, 10, 11)
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12. An implantable pulse generator system, comprising:
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a memory accessible to a control circuit, a control circuit, responsive to allow adjustments to a predetermined therapeutic parameter and to a common operational parameter during parameter adjustment cycles and to generate pulse generator trigger signals in accordance with variable values in said memory, said variable values being of said predetermined therapeutic parameter and said common operational parameter, and wherein said control circuit is operable to adjust said common operational parameter and wherein said common parameter is used to control a pacing algorithm, said pacing algorithm comprising at least two therapy features for periodically causing said control circuit to adjust said common parameter, wherein said at least two therapy features have relative priority with respect to one another, wherein, for each parameter adjustment cycle, if said common operational parameter is adjusted in accordance with one of said at least two therapy features, adjustment of said common operational parameter by any of said at least two therapy features having lower priority than said one feature does not occur. - View Dependent Claims (13)
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14. The method of operating a pulse generator having at least two therapy features capable of causing a common parameter of the pulse generator to be periodically adjusted during a parameter adjustment cycle, comprising the steps of:
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(a) assigning a relative priority to each said at least two therapy features; and (b) during said parameter adjustment cycle, if said common operational parameter is adjusted in accordance with one of said at least two features, not permitting adjustment of said common operational parameter in accordance with any feature of lower priority than said one feature. - View Dependent Claims (15, 16)
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17. An implantable medical device having a cardiac pacemaker, said implantable medical device comprising;
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memory means for storing a value for a common parameter and programs for controlling the pacemaker comprising a set of pacing therapy feature programs, at least some of said set of pacing therapy feature programs comprising requests to chance said common parameter value, a memory for storing a predetermined priority level value for at least two therapy feature programs of said at least some of said set of therapy feature proarams, said priority level value relating said at least two therapy feature programs to said common parameter, and a coordinating program for coordinating change in said value for said common parameter responsive to requests for change in said common parameter value by said at least two of said pacing therapy feature programs, said coordinating program comprising; checking means for discovering said priority level value of a first of said at least two therapy feature program requests and, access to common parameter control means to deny access by said first one of said at least two of said therapy feature programs to said common parameter if said common parameter has already been modified by another of said at least two therapy feature programs discovered by said checking means to have a higher priority level in said memory than said first one of said at least two therapy feature programs. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification