SU565664A1 - Blood pressure measurement-taking device - Google Patents

Description

one

The invention relates to the field of medical and veterinary medicine and can be used in physiological studies of the circulatory apparatus of a living organism.

The known device for automatically measuring blood pressure consists of three cuffs, a differential detector, a pressure transducer, a pulse detector, a pneumatic distributor and a recorder l.

Two combined cuffs at a small distance one relative to the other overlap on the arm, and a third cuff is placed at a considerable distance below the double one.

In this device, the measurement of systolic and diastolic pressure is performed in decompression mode, the maximum and minimum pressure is measured at different points, which

inevitably leads to errors. Removing the information from the third cuff, which is located at a considerable distance from the double cuffs, to cause the systolic pressure to become clear, also leads to an error,

resulting from the passage of a pulse wave through the section of the vessel between the combined and the third cuffs filled with air from a single source. Using such a device it is not possible to determine the average pressure and the oscillographic index.

The aim of the invention is to simultaneously determine the minimum, average and maximum blood pressure.

This is achieved by the fact that one of the cuffs is connected to a source of increased pressure, and the pressure transducer is designed as a combined capacitive electrodynamic system.

Claims (2)

The combined capacitive electrodynamic system is made in the form of a capacitive pressure sensor with a movable lining connected to a cylindrical inductance coil located in the air gap of the permanent magnet, the inductance coil and the lining of the capacitive pressure transducer connected via a matching device with a recording device. The drawing shows a functional diagram of a device for measuring blood pressure. In the device, the damping cuff 1 is connected through pneumatic distribution 2 and pneumatic resistance 3, valve 4 and container 5 with the compression source. The signal cuff 7 is connected to a source of compression 6 through a pneumatic distributor 2, pneumatic resistance 8, veins gil 4 and capacity 5, as well as a differential chamber 9 and a mark of pressure. The capacitive electrodynamic transducer 11 is placed in the differential chamber 9 and is connected to the recorder 12 via matching device 13. The actuator 14 controls the pneumatic distributor 2, the recorder 12 and is connected; through the switch 15 kind of work with turnips 16 time O-ZO seconds and relay 17 time 1-ZO min. The relay-16 of time O-ZO sec controls the switch 15 of the kind of work by the actuator 14 and the relay 18 of pressure. Pressure relay 18 controls a compression source 6. The device works as follows. In the pumping mode, the actuator 14 places the pneumatic distributor 2 in such a position that the cuffs 1, 7, the differential chamber 9 and the marker 10 are blocked for access, air from the compression source 6, which pumps air into the container 5. At a pressure of 10 mm . Art. relay 18 shuts down source 6 of compression. In the operating mode, the actuator 14 moves the pneumatic distributor 2 into a position in which compressed air from the tank 5 through valve 4 and pneumatic resistances 19.8, 3 and 20 enters the cuffs 1, 7 into the differential chamber 9 and the pressure gauge 1O. The 19.8.3 and 2O resistances are adjusted so that the pressure throughout the pneumatic system is balanced throughout the entire compression cycle. The rate of pressure increase is controlled by valve 4. A useful pneumocircle with a signal cuff 7 enters the differential chamber 9 with an integrated electrodynamic transducer 11, which converts the pneumosignal into synchronous electrical signals of the tachooscillogram and phonoachograms that come through matching; the device 13 enters the register of the rator 12. At the same time, the lateral hemodynamic shock is eliminated by the damping cuff 1. In the automatic mode, the control of the actuator 14, the compression source 6 and the recorder 12 1 is produced by the selected time program according to the principle described above. The device allows to improve the diagnosis and treatment of patients. The formula of the solution is 1. A device for measuring blood pressure, containing two compression cuffs, a source of increased pressure, a pressure transducer, a pressure gauge, a pneumatic sensor, a pneumatic dispenser, a pressure gauge and a recording device, which is simultaneously determining the minimum, average and maximum blood pressure, in it one of the cuffs is connected to a source of increased pressure, and the pressure transducer is made in the form of a combination. Node-electrodynamic system. 2. The device according to claim 1, characterized in that the combined capacitive electrodynamic system is made in the form of a capacitive pressure sensor with a movable lining connected to a cylindrical inductance coil located in the air gap of the permanent magnet, and The pressure sensors are connected via a matching device with a recording device. Sources of information taken into account during the examination: 1, US Patent No. 3118440, Cl, 128-205, 1961.