Blood pressure measuring device
First Claim
1. A blood pressure measuring device comprising:
- an inflatable pressure cuff (10) applicable to a body extremity and connected with an automatically operating pressurized air source (26) and a pressure sensor (36) for sensing the cuff pressure, and a control and evaluating unit (28) connected with the pressurized air source (26), the pressure sensor (36) and a controllable valve (27) of the pressure cuff (10), wherein the cuff pressure is adjustable and controllable to a pregiven value and the control and evaluation unit (28) is connected with an EKG-measuring apparatus (38) having at least two EKG-electrodes (22, 44), with the control and evaluation unit (28) determining the pulse wave transmission time from the EKG-signal produced by the EKG measuring device (38) and from a pressure signal produced by the pressure sensor (36).
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Accused Products
Abstract
9A blood pressure measuring device has a pressure cuff the inflation of which is automatically effected and controlled by an evaluation and control unit to allow a continuous monitoring of a patient'"'"'s blood pressure, especially during the night without infringing on the patient'"'"'s comfort and sleep. The device also includes an EKG device and a sensor for sensing the pressure in the cuff. In a first mode of operation, the control and evaluation unit calculates an estimated blood pressure value from pulse wave transmission times with each calculated pulse wave transmission time being the time elapsing between a heart beat as detected by the EKG device and a corresponding cuff pressure change detected by the pressure sensor. In the event of the appearance of blood pressure spikes while operating in the first mode, the device switches to a second operating mode during which absolute blood pressure values are determined.
31 Citations
13 Claims
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1. A blood pressure measuring device comprising:
an inflatable pressure cuff (10) applicable to a body extremity and connected with an automatically operating pressurized air source (26) and a pressure sensor (36) for sensing the cuff pressure, and a control and evaluating unit (28) connected with the pressurized air source (26), the pressure sensor (36) and a controllable valve (27) of the pressure cuff (10), wherein the cuff pressure is adjustable and controllable to a pregiven value and the control and evaluation unit (28) is connected with an EKG-measuring apparatus (38) having at least two EKG-electrodes (22, 44), with the control and evaluation unit (28) determining the pulse wave transmission time from the EKG-signal produced by the EKG measuring device (38) and from a pressure signal produced by the pressure sensor (36). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
Specification