SU1477377A1 - Device for measuring venous pressure - Google Patents

Abstract

The invention relates to medical devices for measuring blood pressure and improves the accuracy and sensitivity of measurements. The device consists of a base on which the lifting mechanism 5 of the limb is located, a position sensor 9 of the platform 1, under which an optical sensor 2 of the blood flow is installed, connected through a switch 12 to the conversion unit 10 and the indicator 11. The patient's arm is fixed on the platform 1. The lifting mechanism is turned on 5 limbs and an optical sensor 2. Based on the indications of the indicator 11, the instant of stabilization of the volumetric blood flow is determined when switching the conversion unit 10 to the position sensor 9, according to the indications of the indicator they specify the height of echnosti corresponding to the magnitude of the venous pressure of the patient. 1 hp ff, 2 ill.

Description

1147

The invention relates to medical instrumentation, namely to devices for measuring blood pressure.

The purpose of the invention is to improve the accuracy and sensitivity of measurements.

FIG. 1 shows a diagram of the device; in fig. 2 - the device, a general view.

The device comprises a platform 1, under which an optical blood flow sensor 2 with an emitter 3 and a photo-receiver 4 is installed, a mechanism for lifting the limb 5, made in the form of a platform tilting unit and including an electric motor 6, a gear 7, a scale 8 with an index, a platform position sensor 9, a conversion unit 10 with an indicator 11, a switch 12, a base 13, a tripod 14 and a belt 15 for fastening a hand. The optical sensor 2 registers the volumetric blood flow in the studied area of the limb. The platform 1 and the scale index 8 are mounted on the shaft 16 of the gearbox 7. The platform position sensor 9 is mechanically connected to the gear unit 7. Conversion unit 10 with the indicator 11. are placed on the base 13. The output of the sensor 2 and the output sensor 9 of the platform position are connected through a switch 12 with the input of block 10 conversion. Vani.

The device works as follows.

When measuring, the hand of the subject is fastened with the belts 15 on the platform 1. The optical sensor 2 is placed under

using a tripod 14 at the level of the right atrium.

A limb elevation mechanism and an optical sensor 2 are connected, connected to a conversion unit 10. Based on indications of indicator 11, a moment of stabilization of the volumetric blood flow is determined. At this moment, on a scale of 8, the height of the H of the test area is determined, and when switching the conversion unit 10 to the sensor 9, the platform position, according to the indicator 11, refines the height of height K of the test area of the venous system relative to the level of the right atrium of the patient. .

Claims (1)

1. A device for measuring venous pressure, comprising a base and an indicator, characterized in that, in order to increase the accuracy and sensitivity of the measurements, it is provided with a limb lifting mechanism associated with the platform position sensor, under which the optical blood flow sensor is connected, connected through a switch with a conversion unit and an indicator, wherein the platform position sensor is connected to the switch, . A device according to claim 1, characterized in that the mechanism for lifting a limb is made in the form of a platform tilting unit with a scale, the test site of the venous system, which is connected via a reducer to an electrophotographic device, which is installed by the engine. eight