System for and method of treating a malfunctioning heart
First Claim
1. A system for treating a malfunctioning heart comprising means for supplying a plurality of treatment modalities to a patient, a plurality of sensors for sensing respective parameters reflecting condition of a patient, means responsive to outputs from at least two of said sensors of at least two of said parameters reflecting condition of a patient for producing respective signal representations of the parameters, means for weighing the respective signal representations, means for processing output from the means for weighing to develop control output for selectively enabling the means for supplying a plurality of treatment modalities to a patient to effect selection of respective ones of treatment modalities as called for by the control output.
2 Assignments
0 Petitions
Accused Products
Abstract
A system for treating the malfunctioning heart of a patient includes means which derive at least one electrical signal from the patient'"'"'s heart and means which derive at least two physiologic signals from or related to the patient'"'"'s circulatory system. The physiologic signals, or functions thereof, are weighted and algebraically summed in a central processing unit, which may be a programmable microprocessor, having a RAM and a ROM, receives and responds to the at least one electrical signal and to the at least two physiologic signals. Output means, which may include a heart assist pump, pacers, drug delivery devices and cardioverting/-defibrillating apparatuses, controlled by the central processing unit provides corrective measure(s) to the patient. Heart-rate zone signals and the algebraic sum, at any given time effect selection of a particular treatment modality, if needed. Adjustable or variable baselines, against which a representation of the current, short-term magnitude of the selected physiologic parameter or parameters are provided. The variable baseline(s) is (are) a representation of the selected physiologic parameter(s) determined over a long term of greater duration than the short term over which the current magnitude(s) of the parameter(s) is (are) measured. The system may be used to carry out a method according to a corresponding series of steps.
-
Citations
41 Claims
- 1. A system for treating a malfunctioning heart comprising means for supplying a plurality of treatment modalities to a patient, a plurality of sensors for sensing respective parameters reflecting condition of a patient, means responsive to outputs from at least two of said sensors of at least two of said parameters reflecting condition of a patient for producing respective signal representations of the parameters, means for weighing the respective signal representations, means for processing output from the means for weighing to develop control output for selectively enabling the means for supplying a plurality of treatment modalities to a patient to effect selection of respective ones of treatment modalities as called for by the control output.
-
17. A system for treating a malfunctioning heart comprising means for supplying a plurality of treatment modalities to a patient;
- means for producing respective signal representations of at least two parameters reflecting condition of a patient, said means for producing respective signal representations including means for providing a baseline signal for at least one of the at least two parameters;
means for developing a short term signal of the at least one parameter and means for comparing the short term signal of the at least one parameter with the baseline signal to develop a difference signal as a function of the at least one parameter;
means for weighing the difference signal function of the at least one parameter and remaining respective signal representations of at least the other parameter, means for processing output from the means for weighing to develop control output for selectively enabling the means for supplying a plurality of treatment modalities to the patient to effect selection of respective ones of treatment modalities as called for by the control output. - View Dependent Claims (18, 19)
- means for producing respective signal representations of at least two parameters reflecting condition of a patient, said means for producing respective signal representations including means for providing a baseline signal for at least one of the at least two parameters;
-
20. A system for treating a malfunctioning heart comprising means for supplying a plurality of treatment modalities to a patient;
- means for producing respective signal representations of at least two parameters reflecting condition of a patient, said means for producing respective signal representations including means for providing a baseline signal for at least one of the parameters, means for developing a short term signal of the at least one parameter and means for comparing the short term signal of the at least one parameter to develop a ratio signal thereof as a function of the at least one parameter; and
means for weighing the ratio signal function of the at least one parameter and remaining respective signal representations of the at least other parameters, means for processing output from the means for weighing to develop control output for selectively enabling the means for supplying a plurality of treatment modalities to the patient to effect selection of respective ones of treatment modalities as called for by the control output.
- means for producing respective signal representations of at least two parameters reflecting condition of a patient, said means for producing respective signal representations including means for providing a baseline signal for at least one of the parameters, means for developing a short term signal of the at least one parameter and means for comparing the short term signal of the at least one parameter to develop a ratio signal thereof as a function of the at least one parameter; and
- 21. A method of treating a malfunctioning heart comprising, determining at least two parameters reflective of condition of a patient, weighing the respective determined parameters, algebraically summing the weighted parameters, and treating a patient with respective treatment modalities in accordance with the magnitude of the algebraic sum.
-
38. A method for treating a malfunctioning heart comprising, determining at least two parameters reflective of condition of a patient, providing a varying long term baseline of the at least one parameter based on variation of the parameter over a long term, determining magnitude of the at least one parameter on a short term basis and determining the difference between the varying baseline and the magnitude of the parameter as the function of the at least one parameter prior to weighing, weighing the respective determined parameters, algebraically summing the weighted parameters and treating a patient with respective treatment modalities in accordance with the magnitude of the algebraic sum.
-
39. A method of treating a malfunctioning heart comprising, determining at least two parameters reflective of condition of a patient, providing a baseline for at least one of the parameters, determining magnitude of the at least one parameter on a short term basis and determining the ratio of the baseline to the short term magnitude of the parameter as the function of the at least one parameter, weighing the determined ratio and respective ones of the determined other parameter or parameters, algebraically summing the weighted ratio and the other weighted parameter or parameters and treating a patient with respective treatment modalities in accordance of the magnitude of the algebraic sum.
-
40. A method for treating a malfunctioning heart comprising, determining at least two parameters reflective of condition of a patient, providing a varying long term baseline of the at least one parameter based on variation of the parameter over a long term, determining magnitude of the at least one parameter on a short term basis and determining the ratio of the varying baseline to the magnitude of the parameter as the function of the at least one parameter prior to weighing, weighing the respective determined parameters, algebraically summing the weighted parameters and treating a patient with respective treatment modalities in accordance with the magnitude of the algebraic sum.
-
41. A system for treating a malfunctioning heart comprising means for supplying a plurality of treatment modalities to a patient including cardioversion/defibrillation;
- means for sensing activity level of a patient;
means for sensing heart rate of the patient;
means, responsive to outputs from said means for sensing activity level and said means for sensing heart rate, for developing respective controlling outputs reflective of condition of the patient for selectively enabling said means for supplying a plurality of treatment modalities to said patient to effect selection of respective ones of treatment modalities as called for by the controlling outputs.
- means for sensing activity level of a patient;
Specification