Method for finding the parameters in a functional relationship between stimulation frequency and load condition sensor signals in a rate responsive heart pacemaker

Claim 1

A method for finding the values of a number of parameters in a functional relationship between the stimulation frequency of a physiological stimulating device implanted in a patient and a sensor signal obtained from the patient indicative of a physical load condition of the patient, said method comprising the steps of: (a) subjecting the patient to a first physical load condition; (b) selecting a first stimulation frequency for optimally stimulating said patient under said first load condition; (c) obtaining a first sensor signal from said patient indicative of said first load condition; (d) repeating steps (a), (b) and (c) for at least one further load condition, the repetition resulting in at least one further stimulating frequency and at least one further sensor signal corresponding to said at least one further load condition, the total of said first load condition and said at least one further load condition being equal to the number of said parameters to be found; and (e) calculating said parameters in said functional relationship based on said stimulating frequencies and said sensor signals corresponding to all of said load conditions.

Claim 2

A method for finding the values of a number of parameters in a functional relationship between the stimulation frequency of a physiological stimulating device implanted in a patient and a sensor signal obtained from the patient indicative of a physical load condition of the patient, said method comprising the steps of: (a) subjecting the patient to a first physical load condition; (b) selecting a first stimulation frequency for optimally stimulating said patient under said first load condition; (c) obtaining a first sensor signal from said patient indicative of said first load condition; (d) repeating steps (a), (b) and (c) for at least one further load condition, the repetition resulting in at least one further stimulating frequency and at least one further sensor signal corresponding to said at least one further load condition, the total of said first load condition and said at least one further load condition being equal to the number of said parameters to be found; and (e) calculating said parameters in said functional relationship based on said stimulating frequencies and said sensor signals corresponding to all of said load conditions.