System and method for detection of pulmonary embolism
First Claim
Patent Images
1. A method, comprising:
- ambulatorily sensing pulmonary artery pressure from within a pulmonary artery of a patient;
ambulatorily sensing, using at least one electrode disposed external to the patient, a first cardiac electrical signal of the patient;
producing a pulmonary artery pressure measurement from the sensed pulmonary artery pressure and producing a pulmonary artery pressure waveform indicative of the sensed pulmonary artery pressure, wherein timing of the pulmonary artery pressure measurement is based at least in part on the sensed cardiac electrical signal;
ambulatorily providing power within the patient by at least one of subcutaneously providing power and transcutaneously providing power to facilitate the sensing of the pulmonary artery pressure and the cardiac electrical signal, and the producing of the pulmonary artery pressure measurement;
detecting acute pulmonary embolism based on a change in a morphological feature of the pulmonary artery pressure waveform;
ambulatorily sensing, using the at least one electrode, at least one of the first cardiac electrical signal and a second cardiac electrical signal of the patient; and
verifying detection of the acute pulmonary embolism using the at least one of the first cardiac electrical signal and the second cardiac electrical signal.
0 Assignments
0 Petitions
Accused Products
Abstract
Systems and methods provide for ambulatorily sensing pulmonary artery pressure from within a patient, and producing a pulmonary artery pressure measurement from the sensed pulmonary artery pressure. Power is ambulatorily provided within the patient to facilitate sensing of the pulmonary artery pressure and producing of the pulmonary artery pressure measurement. Acute pulmonary embolism is detected based on a change or rate of change in the pulmonary artery pressure measurement. An alert is preferably generated in response to detecting pulmonary embolism.
73 Citations
20 Claims
-
1. A method, comprising:
-
ambulatorily sensing pulmonary artery pressure from within a pulmonary artery of a patient; ambulatorily sensing, using at least one electrode disposed external to the patient, a first cardiac electrical signal of the patient; producing a pulmonary artery pressure measurement from the sensed pulmonary artery pressure and producing a pulmonary artery pressure waveform indicative of the sensed pulmonary artery pressure, wherein timing of the pulmonary artery pressure measurement is based at least in part on the sensed cardiac electrical signal; ambulatorily providing power within the patient by at least one of subcutaneously providing power and transcutaneously providing power to facilitate the sensing of the pulmonary artery pressure and the cardiac electrical signal, and the producing of the pulmonary artery pressure measurement; detecting acute pulmonary embolism based on a change in a morphological feature of the pulmonary artery pressure waveform; ambulatorily sensing, using the at least one electrode, at least one of the first cardiac electrical signal and a second cardiac electrical signal of the patient; and verifying detection of the acute pulmonary embolism using the at least one of the first cardiac electrical signal and the second cardiac electrical signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A system, comprising:
-
an implantable pressure sensor configured to ambulatorily sense pulmonary artery pressure from within a patient, the pressure sensor comprising; a support structure comprising a stabilizing arrangement configured to stabilize the pressure sensor within a pulmonary artery of the patient; a pressure transducer; a communications device coupled to the pressure transducer, the communications device configured to effect wireless transmission of a pulmonary artery pressure waveform out of the patient'"'"'s heart, the pressure transducer and the communications device supported by the support structure; and an energy source configured to supply power for the pressure transducer and the communications device; an external cardiac electrical activity sensor configured to sense, using at least one electrode disposed external to the patient, cardiac electrical activity and output a cardiac electrical signal; and a processor communicatively coupled to the communications device of the pressure sensor and to the external cardiac electrical activity sensor, the processor configured to execute programmed instructions for making a pulmonary artery pressure measurement based at least in part on the cardiac electrical signal and detecting acute pulmonary embolism based on a change in a morphological feature of the pulmonary artery pressure waveform and verifying detection of the acute pulmonary embolism using the cardiac electrical signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification