SU1405808A1 - Apparatus for measuring intracranial pressure - Google Patents

Abstract

The invention relates to medical technology. The purpose of the invention is to expand the functionality of the device. The device contains a two-chamber bag 1 of an inextensible material, divided by a longitudinal partition into two isolated chambers, two flexible catheters 4 and 5, a pressure meter containing a pressure sensor 6 and a recording device 7, a crane 8, an increased pressure source 9, a dispenser 10, containing a reservoir 11 of plastic material, a punch 12, a button 13, an electromagnet 14 with a bark 15, a rod 16, a return spring 17, a turret 18 with a set of interchangeable stops 19. The implanted bag 1 can be left for the entire period echeni, with periodic measurements do not injure the patient's brain and cause more threat of infection. 1 h. n. f-ly, 3 ill.

Description

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The invention relates to medical technology, namely to devices for measuring intracranial pressure.

The purpose of the invention is to expand the functionality of the device by measuring the elastic properties of the brain.

 FIG. 1 shows a schematic of the proposed device; in fig. 2 - two-chamber bag with connecting catheters, longitudinal section; in fig. 3 is an example of the simultaneous use of two similar devices.

The device for measuring intracranial pressure contains a two-chamber bag 1 of an inextensible material, divided by a longitudinal partition of an inextensible material into two isolated chambers 2 n 3, two flexible catheters 4 and 5, a pressure meter containing a pressure sensor 6 and a recording device 7,

ten

15

DYMA into the intracranial cavity, is carried out using a set of interchangeable stops 19, individually adjustable to given doses. The revolving head 18 provides a quick and convenient change of the stops 19.

Sensor 6 detects the change in pressure caused by introducing a portion of fluid into the epidural cavity.

The implant of a patient’s skull 1 may remain there during the entire treatment period, and periodic measurements do not injure the patient’s brain and do not cause the threat of additional infection.

The described device can also be used to measure the intracranial pressure gradient and the difference in the elastic-elastic properties of the brain at its different points. In this case, two identical devices are used to measure pressures at two different points of the intracranial cap 8, high pressure source 9, 20, as shown in FIG. 3

innovator 10, containing a reservoir AND from the measurement of pressure and elastic-elastic: elastic material, punch 12, knop 13, electromagnet 14 with a bark 15, rod

| 16, a return spring 17, a revolving

Tin 18 with a set of interchangeable stops 19.

The device works as follows.

Through valve 8, a pressure source 9 is used to fill the hydraulic system consisting of sensor 6

25

in this case, both for each examined point of the brain separately (this determines the response at the corresponding point to the disturbance caused by the introduction of the dosed volume into the cavity of the chamber 3 of that bag in which the cavity of the chamber 2 is measured) and cross measurements in which a portion of fluid is injected into

| a, alenie, catheter 4 and the first chamber 2 of the chamber 3 of one bag, and the measurement of the pressure change caused by this

a perturbation is made in the cavity of the chamber 2 of the other bag. No additional devices and devices are required for this.

Claims (2)

1. A device for measuring intracranial pressure, containing a bag of inextensible material, a flexible catheter connected to a gauge and a source of increased pressure, and a manometer, characterized in that, in order to enhance the functionality by measuring the elastic-elastic properties of the brain, meshes of inextensible material RazShochka 1, the working fluid. The cavity of Measure 2 is approximately 1/5 of its volume, with particular attention being paid to the absence of air bubbles in the system. The crane 8 overlaps and the zero reading of the sensor 6 is established, with the bag and the working part of the sensor camera placed at the same level. The cavity of the second chamber 3, the catheter 5 and the reservoir 11 are also filled and sealed, it being necessary to monitor that. When the liquid of the walls of tank 11 was completely displaced from the cavity of kaMepbi 3, the walls of tank 11 were not stressed, and when the liquid was pumped from tank 11 into chamber cavity 3, its walls did not stretch. Then the bag is inserted into the trephination opening-45 by a partition of non-expandable Ma (Step 20 and is placed between the Cranial Plate 21 and the dura mater 22 so that the chamber cavity adjoins the latter. From this moment the sensor 6 measures the intracranial pressure. On the recording device 7 ifcro registration is performed. In order to assess the elastic-elastic properties of the brain, button 13 of the auxiliary pump 10 (or the switching on of the electromagnet 14 f automatic mode) and dosed 1 (1Ortia of the liquid is pushed out by the punch 12 i | i3 of the tank 11 into the cavity of the chamber 3) 1 | doses of liquid, material into two isolated chambers, a second flexible catheter connected at one end with a dispenser is inserted into the device, containing a reservoir of plastic material, a punch and a set of stops for supplying 50 metered doses of liquid, and the other end of the second catheter and connected to the second chamber. 2. The device according to claim 1, characterized in that, in order to ensure the automatic supply of dosed portions of liquid, an electromagnet is mounted in the dispenser located coaxially to the punch, and the core of the electromagnet is rigidly fixed on the punch rod. 55 DYMA into the intracranial cavity, is carried out using a set of interchangeable stops 19, individually adjustable to given doses. The revolving head 18 provides a quick and convenient change of the stops 19. Sensor 6 detects the change in pressure caused by introducing a portion of fluid into the epidural cavity. The implant of a patient’s skull 1 may remain there during the entire treatment period, and periodic measurements do not injure the patient’s brain and do not cause the threat of additional infection. The described device can also be used to measure the intracranial pressure gradient and the difference in the elastic-elastic properties of the brain at its different points. In this case, two identical devices are used to measure pressures at two different intracranial points. in this case, both for each examined point of the brain separately (this determines the response at the corresponding point to the disturbance caused by the introduction of the dosed volume into the cavity of the chamber 3 of that bag in which the cavity of the chamber 2 is measured) and cross measurements in which a portion of fluid is injected into  by a partition of inextensible material into two isolated chambers, a second flexible catheter connected at one end with a dispenser is inserted into the device, containing a reservoir of plastic material, a punch and a set of stops for delivering metered portions of the liquid, and the other end of the second catheter is connected to second camera. 2. The device according to claim 1, characterized in that, in order to ensure the automatic supply of dosed portions of liquid, an electromagnet is mounted in the dispenser located coaxially to the punch, and the core of the electromagnet is rigidly fixed on the punch rod. Phi2.2 eight  -®-CZDH eight - (g) -OZH