Pressure-modulated energy level for pacing pulses
First Claim
1. An implantable medical device comprising:
- a pressure sensor that generates a pressure signal as a function of a pressure in a heart;
a pressure monitor that identifies a pressure value at a point of maximum slope in the pressure signal; and
a processor that causes a pacemaker to adjust the energy level of pacing pulses delivered to the heart as a function of the pressure value.
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Accused Products
Abstract
Techniques for pacing the heart of a patient as a function of a pressure value make use of a pressure monitor that receives a signal from a pressure sensor in the heart. The pressure monitor measures a pressure value. The pressure monitor may, for example, estimate the pulmonary artery diastolic pressure if the pressure sensor is located in the right ventricle, or calculate the mean central venous pressure if pressure sensor is located in the right atrium. The energy level of the pacing pulses delivered to the patient'"'"'s heart by a pacemaker is modulated as a function of the pressure value. Modulating the energy level of the pacing pulses modulates the cardiac output of the patient'"'"'s heart.
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Citations
71 Claims
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1. An implantable medical device comprising:
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a pressure sensor that generates a pressure signal as a function of a pressure in a heart;
a pressure monitor that identifies a pressure value at a point of maximum slope in the pressure signal; and
a processor that causes a pacemaker to adjust the energy level of pacing pulses delivered to the heart as a function of the pressure value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An implantable medical device comprising:
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a pressure sensor that generates a pressure signal as a function of a pressure in a heart;
a pressure monitor that estimates the pulmonary artery diastolic pressure as a function of the pressure signal; and
a processor that causes a pacemaker to adjust the energy level of pacing pulses delivered to the heart as a function of the estimated pulmonary artery diastolic pressure. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An implantable medical device comprising:
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a pressure sensor that generates a pressure signal as a function of a pressure in an atrium of a heart;
a pressure monitor to measure a pressure value as a function of the pressure signal; and
a processor that causes a pacemaker to adjust the energy level of pacing pulses delivered to the heart as a function of the pressure value. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A method comprising:
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identifying a point of maximum slope in a pressure signal, the pressure signal being a function of a pressure in a heart;
identifying a value of the pressure signal at the maximum slope of the pressure signal; and
adjusting the energy level of pacing pulses delivered to the heart by a pacemaker as a function of the identified pressure value. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42)
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43. A method comprising:
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estimating the pulmonary artery diastolic pressure as a function of a pressure within a heart; and
adjusting the energy level of pacing pulses delivered to the heart by a pacemaker as a function of the estimated pulmonary artery diastolic pressure. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50)
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51. A method comprising:
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determining a mean value of a pressure signal over a period of time, the pressure signal being a function of a pressure within a heart; and
adjusting the energy level of pacing pulses delivered to the heart by a pacemaker as a function of the mean value. - View Dependent Claims (52, 53, 54, 55, 56, 57, 58, 59)
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60. A computer-readable medium comprising instructions that cause a processor to:
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identify a point of maximum slope in a pressure signal, the pressure signal being a function of a pressure within a heart;
identify a value of the pressure signal at the maximum slope of the pressure signal; and
adjust the energy level of pacing pulses delivered to the heart by a pacemaker as a function of the identified pressure value. - View Dependent Claims (61, 62, 63)
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64. A computer-readable medium comprising instructions that cause a processor to:
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receive an estimated pulmonary artery diastolic pressure value; and
adjust the energy level of pacing pulses delivered to the heart by a pacemaker as a function of the estimated pulmonary artery diastolic pressure value. - View Dependent Claims (65)
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66. A computer-readable medium comprising instructions that cause a processor to:
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determine a mean value of the pressure signal over a period of time, the pressure signal being a function of a pressure within a heart; and
adjust the energy level of pacing pulses delivered to the heart by a pacemaker as a function of the mean pressure value. - View Dependent Claims (67, 68)
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69. An implantable medical device comprising:
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means for identifying a point of maximum slope in a pressure signal, the pressure signal being a function of a pressure within a heart;
means for identifying a value of the pressure signal at the maximum slope of the pressure signal;
means for adjusting the energy level of pacing pulses delivered to the heart as a function of the identified pressure value.
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70. An implantable medical device comprising:
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means for estimating the pulmonary artery diastolic pressure as a function of a pressure within a heart; and
means for adjusting the energy level of pacing pulses delivered to the heart as a function of the estimated pulmonary artery diastolic pressure value.
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71. An implantable medical device comprising:
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means for determining a mean value of a pressure signal over a period of time, the pressure signal a function of a pressure within a heart; and
means for adjusting the energy level of pacing pulses delivered to the heart as a function of the determined mean pressure value.
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Specification