ELECTROMEDICAL IMPLANT AND MONITORING SYSTEM INCLUDING THE ELECTROMEDICAL IMPLANT
First Claim
1. An electromedical implant including:
- a. a detector configured to obtain;
(1) a first measurement signal (S1) associated with a cardiac blood flow (B1) of a living being, and(2) a second measurement signal (S2) associated with an epithoracic, peripheral blood flow (B2) of the living being, the second measurement signal (S2) being an impedance signal;
b. a monitoring assembly in communication with the detector, the monitoring assembly being configured to obtain;
(1) a first parameter (P1) from the first measurement signal (S1) representative of a time (tsys) at which blood is ejected from the heart, and(2) a second parameter (P2) from the second measurement signal (S2) representative of a time (tgef) of a blood pulse in the thoracic tissue which is associated with the ejection of blood;
c. an evaluation unit in communication with the monitoring assembly, the evaluation unit being configured to generate a pulse transit time (Δ
t) from the first parameter (P1) and the second parameter (P2).
1 Assignment
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Accused Products
Abstract
An electromedical implant (100, 101, 102, 103) for monitoring a cardiac blood flow (B1) of a patient includes a detector (10, 10′, 10″) which obtains a first measurement signal (S1) associated with the cardiac blood flow (B1) and a second measurement signal (S2) associated with the epithoracic, peripheral blood flow (B2). A monitoring assembly (20) then generates a first parameter (P1) from the first measurement signal (S1) which is indicative of a time (tsys) at which blood is ejected from the heart, and a second parameter (2) from the second measurement signal (S2) which is indicative of a time (tgef) of a blood pulse in the thoracic tissue which is associated with the ejection of blood. An evaluation unit (30) then generates a pulse transit time (Δt=tgef−tsys) from the first parameter (P1) and the second parameter (P2). The detector (10, 10′, 10″) includes an impedance measuring unit (12) having an electrode assembly (11, 11′) for detection of at least the second measurement signal (S2) in the form of an impedance signal.
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Citations
23 Claims
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1. An electromedical implant including:
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a. a detector configured to obtain; (1) a first measurement signal (S1) associated with a cardiac blood flow (B1) of a living being, and (2) a second measurement signal (S2) associated with an epithoracic, peripheral blood flow (B2) of the living being, the second measurement signal (S2) being an impedance signal; b. a monitoring assembly in communication with the detector, the monitoring assembly being configured to obtain; (1) a first parameter (P1) from the first measurement signal (S1) representative of a time (tsys) at which blood is ejected from the heart, and (2) a second parameter (P2) from the second measurement signal (S2) representative of a time (tgef) of a blood pulse in the thoracic tissue which is associated with the ejection of blood; c. an evaluation unit in communication with the monitoring assembly, the evaluation unit being configured to generate a pulse transit time (Δ
t) from the first parameter (P1) and the second parameter (P2). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for determining the pulse transit time (Δ
- t) within a living being, the method including the performance of the following steps within an implant situated within a living being;
a. detecting a first measurement signal (S1) associated with the cardiac blood flow (B1) of the living being; b. detecting a second measurement signal (S2) associated with the epithoracic, peripheral blood flow (B2) of the living being, the second measurement signal (S2) being an impedance signal; c. determining a first parameter (P1) from the first measurement signal (S1), wherein the first parameter (P1) is representative of a time (tsys) at which blood is ejected from the heart; d. determining a second parameter (P2) from the second measurement signal (S2), the second parameter (P2) being representative of a time (tgef) of a blood pulse in the thoracic tissue which is associated with the ejection of blood; e. determining a pulse transit time (Δ
t) from the first parameter (P1) and the second parameter (P2). - View Dependent Claims (18, 19, 20, 21, 22, 23)
- t) within a living being, the method including the performance of the following steps within an implant situated within a living being;
Specification