TR201706814A2 - New medical instrument for measuring human cerebrospinal fluid (CSF) pressure - Google Patents

Abstract

Measurement of "CSF pressure" has an important role in the diagnosis of many nervous system diseases and in monitoring of brain functions after head trauma. Some undesirable effects may occur during the use of plastic manometers currently used for this purpose. While taking a sample with a spinal needle (10 cm long needle entering the cerebrospinal fluid from the lumbar vertebrae) from the CSF in the region, subarachnoid (compartment where the CSF is circulating in the brain and spine) without using a manometer, the droplets drop on a digital surface and the time between these drops is measured without any contact. For the first time a method of measuring "CSF" pressure was applied. The instrument consists essentially of an infrared sensor and a circuit and stopwatch to perform digital calculations. The time between each drop touching the infrared sensor is determined by a digital circuit and converted to pressure by a measuring device installed in the digital circuit.

Description

DESCRIPTION New medical instrument for measuring human cerebrospinal fluid (CSF) pressure By measuring the pressure of the fluid called cerebrospinal fluid in the field of invention. is relevant. Meeting the needs of physicians in all branches of anesthesia, algology, neurosurgery and neurology. It has a very large market for it.

CSF pressure is derived from the lumbar region (lower lumbar region of the spine) in the human body. It can be measured in two ways.

Measuring devices from the lumbar region are mainly listed below.

This measuring instrument, which has the patent number US 3529592 A, is a plastic device with degrees on it. tube and connecting that tube to the needle used to enter the cerebrospinal fluid It consists of a plastic set (serum set). In this technique, the patient is in a lying or sitting position. entering the subarachnoid space (the compartment in the brain and spine where CSF circulates) Then the inside of the connection set and the inside of the graduated plastic tube is 09% saline, which we call physiological saline. It is filled with NaCl. The needle was inserted in the patient with the red stick next to the graduated tube. Calibration of the manometer so that the liquid column inside the tube will show "0" is being done. Following this, the connector consisting of the serum set is connected to the spinal needle in the patient. CSF pressure is measured. It is the measurement made with a pressure gauge with a numbered needle. For this, the instrument is pre-sterilized.

Then, CSF in the patient's subarachnoid region is connected to the incoming spinal needle and It is expected that the needle will rise with the pressure. This process may take 3-5 minutes. TECHNICAL PROBLEMS FOUND IN PRIOR ART 1- MEASUREMENT WITH NO. PLASTIC MANOMETER: - The set must be opened and prepared and filled with physiological saline. - Waiting for the calibration of the water in the manometer with the patient for the measurement. - If the needle is below a certain Gauge (needle diameter), the method does not give sufficient results.

- There is a risk of infection as there is physical contact with the needle. METHOD NUMBER 2: - The use of the needle manometer always requires prior sterilization and this sterilization takes time.

- Although it is sterilization, it carries the risk of infection.

- Sufficient results cannot be obtained with needles below a certain gauge (22 g).

ADVANTAGES OF THE INVENTION l- Since there is no contact with the patient, it does not require sterilization. 2- It can be used repeatedly in the same patient or in different patients. 3- The needle that comes into contact with the CSF is not touched in any way, so there is a risk of infection. there is none. 4-Measurement time is short enough to measure between 2 drips, results in seconds can give.

- The diameter of the spinal needle (gauge) does not affect the measurement.

DETAILED TECHNICAL DESCRIPTION OF THE INVENTION This invention is a form of cerebrospinal fluid dripping pressure of human cerebrospinal fluid. It is related to the basis of measuring by an electronic circuit activated as a result of contact with the sensor.

This instrument creates a simulation of cerebrospinal fluid, as shown in the figure. dripping drops (3) from the spinal needle (2) attached to the model (l) contact the sensor (4) of the device it (5).

The infrared sensor (4), which the drops (3) come into contact with and opens and closes the circuit (5), is the first forms the part. A circuit (5) to the infrared sensor (4) that performs the digital calculations Each drop touched is activated by (4), the time between these drops is a digital stopwatch (6). It is detected sensitively by means of converted to values.

Figure 1A and IE: The schematic representation of the new device. (1) Glass model from which BOS comes (2) Spinal needle (3) CSF drop (4) Infrared sensor (5) Circuit (6) Digital stopwatch (Picture page 1 and 2 / Total pages 2)

Claims (1)

REQUIREMENTS Invention is a medical measuring device, consisting of an infrared sensor, a circuit and a digital stopwatch. The infrared sensor in claim 1 is the part that detects the CSF drop, consisting of a motion-sensing transmitter and a receiver. The circuit in claim 1 consists of electrical conductors that send the on-off signals to operate the stopwatch. The stopwatch in claim 1 consists of a two-digit digital display that responds to each signal by running or stopping.