TR2022009838A2 - ARM BAND DETERMINING THE LOCATION OF THE VESSEL TO OPEN VASCULATOR - Google Patents

Abstract

The invention does not use any image processing method; It relates to the armband that detects the position of the vein to open the vascular access via LED, photodiode and a microprocessor.

Description

DESCRIPTION ARMBAND THAT DETECTS THE POSITION OF THE VEIN TO OPEN VASCULAR CONNECTION TECHNICAL FIELD The invention is without using any image processing method; It is related to the armband, which detects the position of the vein to open the vascular access, through the LED, photodiode and a microprocessor. BACKGROUND ART Sometimes, during blood collection or vascular access from patients in healthcare institutions, the location of the vein cannot be determined by the healthcare personnel. For this reason, injections are applied more than once and this causes distress to the patient. In order to eliminate this situation, which is a significant problem especially for children and elderly people, many systems that detect the location of veins have been developed. Most of these systems use complex image processing technology and costly hardware. LIST OF FIGURES Figure 1. General View of the Invention Correspondence of the numbers given in the figures: 1. Armband 2. LED-Photodiode-LED Group 3. Microcontroller 4. Battery. Description DETAILED DESCRIPTION OF THE INVENTION The invention is made without using any image processing method; It is related to the armband (1) containing a rechargeable battery (4) as a power source, which detects the position of the vein to open an vascular access, via the LED, photodiode and a microcontroller (3). With its simple structure, the invention also enables people to draw their own blood at home without going to healthcare institutions. The invention consists of an armband (1) to be worn on the brachial artery around the elbow and the electronic components on it. Brachial artery is Latin for inside of the elbow. These arteries are located in the front and back parts of the leg. That's why the stethoscope is placed in these places when blood pressure is measured. The middle of the arm band (1) is open, and on both sides of this opening (5), there are LED-Photodiode-LED groups (2) lined up along the opening (5). The mentioned LED-Photodiode-LED group (2) contains two LEDs and one photodiode. While one of the LEDs is used to inform the user, the other LED is used to report the results to the user. The photodiode measures the intensity of the light produced by the LED as it is reflected and returned. Through the (2) LEDs in the LED-Photodiode-LED groups whose contents are defined above, light is sent downwards from the skin at a wavelength between 650-940 nm, in order to apply the photoplethysmography (PPG) technique, and the reflected light is measured by photodiodes. Photoplethysmography is an optical technique used to detect volumetric changes in blood in peripheral circulation. Since the hemoglobin in the blood absorbs light at these wavelengths, the back reflection of light decreases when the amount of blood increases during the pulse. Thus, the pulse wave is obtained by monitoring the decrease in the signals of the photodiodes. One hundred pieces of data per second are collected from the photodiodes for five seconds with the microcontroller (3) on the armband. The microcontroller (3) cleans the noise by processing 500 pieces of data coming from the photodiodes with a digital band-pass filter that is included in the algorithm and passes between 0.5 - 3Hz. That is, data below 0.5Hz and above 3Hz are eliminated and only the pulse signal at 0.5-3Hz frequencies, corresponding to 30-180 pulses per minute, is obtained. Afterwards, the maximum and minimum signal levels coming from each photodiode are determined with the peak detection algorithm. The core passes under the photodiode where the difference between these two signal levels is highest. When these photodiodes are determined for both rows, the two photodiodes best aligned with the vessel are also determined. Based on this determination, the needle should be inserted in the middle of these two photodiodes. The third LED in the LED-Photodiode-LED group (2), which contains these two photodiodes, and which is facing the user, is turned on by the microprocessor (3), and the user is visually shown where the needle should be inserted. TR TR TR TR TR

Claims (1)

1.CLAIMS. It is an arm band (1) that detects the position of the vein to open a vascular access on the brachial artery around the elbow, and its feature is; It is characterized by containing - Microcontroller (3), - Battery (4) and opening (5) units and parts. . It is an armband (1) that detects the position of the vein in order to open a vascular access on the brachial artery around the elbow mentioned in Claim 1, and its feature is; It is characterized by the fact that the LED-Photodiode-LED group (2) is arranged on both sides of the opening (5) and along the opening (5). . It is an armband (1) that detects the position of the vein in order to open a vascular access on the brachial artery around the elbow mentioned in Claim 2, and its feature is; It is characterized by the fact that the LED-Photodiode-LED group (2) contains two LEDs and one photodiode, one of which acts on behalf of the user and the other reports the result to the user. . It is an arm band (1) that detects the position of the vein in order to open a vascular access on the brachial artery around the elbow mentioned in any of the above claims, and its feature is; It is characterized by the wavelength of the radiation made by the LED within the LED-Photodiode-LED groups (2) being in the range of 650-940 nm. . It is an arm band (1) that detects the position of the vein in order to open a vascular access on the brachial artery around the elbow mentioned in any of the above claims, and its feature is; It is characterized by containing a photodiode that produces a pulse wave by following the decreases in the back reflection of the light sent by the glowing LED. . It is an armband (1) that detects the position of the vein in order to open a vascular access on the brachial artery around the elbow mentioned in Claim 1, and its feature is; - Collecting one hundred data per second from the photodiodes for five seconds, - Containing a digital band-pass filter that passes between 0.5 - 3Hz to clean the noise by processing 500 data coming from the photodiodes, - Peak to detect the maximum and minimum signal level coming from each photodiode It is characterized by a microprocessor (3) that contains a detection algorithm, determines the photodiode with the highest difference between two signal levels, and visually indicates to the user where the needle should be inserted by turning on the LED in the LED-Photodiode-LED group (2), which is the third one facing the user. . It is a vascular access detection method with an arm band (1) that detects the position of the vein in order to open a vascular access on the brachial artery around the elbow mentioned in any of the above claims, and its feature is; Sending light at a wavelength between 650-940 nm downwards from the skin through the LED in the LED-Photodiode-LED groups (2), measuring the reflected light by the photodiodes, collecting one hundred data per second from the photodiodes for five seconds with the microcontroller (3) on the arm band. , Cleaning the noise by processing 500 data coming from the photodiodes with a digital band-pass filter in the algorithm in the microcontroller (3) and passing between 0.5 - 3Hz, Then determining the maximum and minimum signal level from each photodiode with the peak finding algorithm, Two detecting the photodiode with the highest difference in signal level. When these photodiodes are determined for both rows, the third LED in the LED-Photodiode-LED group (2) containing these two photodiodes and facing the user is turned on by the microprocessor (3) and provides a visual visual signal to the user. It is characterized by the steps of showing where the needle should be inserted. TR TR TR TR TR