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Eun Jong Cha

Eun Jong Cha, Cheongju-City KR

Patent application numberDescriptionPublished
20080300503Method and system of monitoring respiratory signal by radio - A method and system is provided for monitoring a respiratory signal by radio. The method includes the steps of: converting a change in electric resistance, which is caused by a change in abdominal circumference measured through a rubber waistband that is made of conductive rubber and is mounted on a lower garment of a testee during respiration, into a voltage signal, performing A/D conversion on the voltage signal, and transmitting the converted digital signal to a short distance by radio using a wireless communication protocol for ZigBee; and receiving the respiratory signal transmitted by radio, transmitting it to a computer unit by wire through an RS-232 port that is a serial communication port, and enabling a tester to monitor the respiratory signal through a screen.12-04-2008
20080312557Method and system for measuring urinary flow rate - Disclosed are a method and an apparatus capable of efficiently and precisely measuring a urinary flow rate by using a general purpose pressure sensor with a low price, instead of a conventional expensive weight sensor, even without a conventional funnel. According to the method and the apparatus, water pressure of urine accumulated in a vessel is transferred to an external pressure sensor through a pressure transfer pipe, the received water pressure is converted into electrical signals through the pressure sensor, the electrical signals are amplified through a bridge amplifier, the amplified analog signals into digital signals (water pressure signals), the water pressure signals are converted into volume signals through an interface with an analyzer, and urinary flow rate signals are acquired by differentiating the volume signals, in which the electrical signals are voltage signals corresponding to volume signals.12-18-2008
20090101148CONTINUOUS POSITIVE AIRWAY PRESSURE DEVICE BY CONTROLLING THE PRESSURE IN THE FACE MASK - A CPAP device includes an air stream generator for generating positive pressure, a face mask connected to the air stream generator through a flow supply catheter, a pressure sensor measuring pressure in the face mask, a control circuit controlling the air stream generator, and a pressure detection pipe having a first side and a second side. The pressure sensor is connected to the second side of the pressure detection pipe to measure pressure of the detection hole formed at the first side of the pressure detection pipe and outputs the measured pressure value to the control circuit. The control circuit distinguishes average positive pressure from pressure caused by spontaneous breathing of patient according to values of the pressure in the face mask, which are input from the pressure sensor, and controls a speed of the air stream generator such that preset positive pressure is supplied to the patient.04-23-2009
20100106216PROBE FOR ELECTRIC STIMULATOR HAVING VARIABLE VAGINAL ELECTRODE - A probe for an electric stimulator having a variable vaginal electrode constantly maintains the contact resistance by adjusting the diameter of the electrode corresponding to the user. Electrodes are provided on front and rear parts of a body of the probe, respectively. The electrodes are provided in a circular arrangement such that the electrodes move up and down. A rotating handle is formed at a side of the body such that the handle rotates at the side of the body. A shaft coupled to the handle rotates when the handle rotates, so a cam plate coupled to the shaft rotates, and the rotated cam plate pushes the electrodes, thereby expanding or reducing a diameter of the electrodes.04-29-2010
20100142773METHOD AND SYSTEM FOR ACCURATELY MEASURING VERY SMALL VOLUME OF BLOOD - A method and system for accurately measuring a very small volume of blood is used for accurate evaluation of an amount (volume) of blood collected by a lancing device, evaluation of a scientific very small amount of blood, and so on. The method includes the steps of collecting the very small volume of blood, absorbing the very small volume of collected blood into an absorption medium, drying the absorption medium, scanning the dried absorption medium using an image scanner connected to a computer to obtain a digital image, and calculating the very small volume of blood from the digital image using an analysis program.06-10-2010
20100152684METHOD AND SYSTEM FOR MEASURING URINARY FLOW RATE - A method and system for measuring a urinary flow rate minimizes impact noise caused by urine to measure the urinary flow rate using a plurality of load cells when prostatic hypertrophy is diagnosed. The method includes measuring an amount of urine collected into a container using a plurality of load cells, extracting and averaging urinary flow rate signals from the measured results, and removing the impact noise from the urinary flow rate signals, converting the urinary flow rate signals into digital signals through an A/D converting circuit, and outputting the digital signals using a personal computer or a microprocessor analyzer which is interfaced with the A/D converting circuit.06-17-2010
20100249632METHOD AND SYSTEM OF MONITORING RESPIRATORY SIGNAL BY RADIO - A method and system is provided for monitoring a respiratory signal by radio. The method includes the steps of converting a change in electric resistance, which is caused by a change in abdominal circumference measured through a rubber waistband that is made of conductive rubber and is mounted on a lower garment of a testee during respiration, into a voltage signal, performing A/D conversion on the voltage signal, and transmitting the converted digital signal a short distance by radio using a wireless communication protocol for ZigBee, and receiving the respiratory signal transmitted by radio, transmitting it to a computer unit by wire through an RS-232 port that is a serial communication port, and enabling a tester to monitor the respiratory signal through a screen.09-30-2010

Patent applications by Eun Jong Cha, Cheongju-City KR

Eun Jong Cha, Cheongiu-City KR

Patent application numberDescriptionPublished
20100101578ONE-WAY AIR FLOW VALVE USING ROTARY SPRING - A one-way air flow valve includes one-way inspiration and expiration valve assemblies which have a same structure, are connected to each other in parallel, and are arranged opposite to each other, so that valve plates provided in the one-way inspiration and expiration valve assemblies, respectively, are open in directions opposite to each other, and a connection part including a mouthpiece provided at one side of the inspiration and expiration valve assemblies to allow an examinee to inhale or exhale air. One end of the inspiration valve assembly is connected with a gas tank, one end of the expiration valve assembly is connected with a gas density analyzer, and the inspiration and expiration valve assemblies include a valve and suction and discharging tubes coupled with one side and an opposite side of the valve, respectively.04-29-2010

Eun Jong Cha, Chungcheongbuk-Do KR

Patent application numberDescriptionPublished
20090204014DOWN-SIZED SINGLE DIRECTIONAL RESPIRATORY AIR FLOW MEASURING TUBE - A down-sized single directional respiratory air flow measuring tube is provided that is suitable for an electronic respiratory air flow measuring device such that the patients perform a self-test. The measuring tube includes: a cylindrical pipe including an inlet making contact with a mouth of an examinee and an outlet facing the inlet, in which the cylindrical pipe includes disposable material; and a detection rod positioned near the outlet, expanding out of a lower portion of the cylindrical pipe while passing through the cylindrical pipe from an upper portion of the cylindrical pipe, and formed with a closed upper portion, in which the detection rod has a plurality of sampling holes to measure dynamic pressure of a respiratory air flow at the first side of the inlet of the cylindrical pipe such that air flow between the center portion and a wall surface of the cylindrical pipe is measured.08-13-2009