| Taewoong Medical Co., Ltd. Patent applications |
| Patent application number | Title | Published |
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| 20120303015 | ELECTRODE NEEDLE AND HEMOSTATIC DEVICE INCLUDING THE SAME - An electrode needle includes an electrode needle body, a metal tube, and an outer insulating tube. The electrode needle body is connected to a positive electrode of an RF generator. The metal tube is fixed around the electrode needle body and insulated from the electrode needle body. The metal tube is connected to a negative electrode of the RF generator. The outer insulating tube surrounds an upper part of the metal tube to expose a lower part of the metal tube. The outer insulating tube is movable longitudinally along the electrode needle body to vary an exposed area of the metal tube. At least one of a position, an area, and a cauterization speed of a site to be cauterized is controlled by varying the exposed area of the metal tube. | 11-29-2012 |
| 20120179152 | COMBINABLE ELECTRODE NEEDLE BASE STRUCTURE - Provided is a combinable electrode needle base structure in which a base to which electrode needles are coupled can be used in a combined or separated state to use the electrode needles according to the size and location of a lesion. In the combinable electrode needle structure, electrode needles are connected to the front side of an electrode needle base, and receive RF waves from RF (radio frequency) generator. The electrode needle base is divided into dividable bases to which the electrode needles are respectively coupled. When a lesion to be cauterized is large or cauterization should be concentrated, the dividable bases are combined and then used, and when a lesion is small or lesions are scattered, the dividable bases may be separated and then used. | 07-12-2012 |
| 20110071514 | METHOD AND SYSTEM FOR CONTROLLING RADIO FREQUENCY OUTPUT ACCORDING TO CHANGE IN IMPEDANCE OF BIOLOGICAL CELLS - Disclosed herein is a method and system for controlling radio frequency (RF) output according to the change in impedance of biological cells. In the method of controlling radio frequency (RF) output according to a change in impedance of biological cells, phases of RF voltage and current applied to the electrode are detected and a difference between the phases is obtained. A change in impedance such as a resistance component and a capacitive reactance component (XC) of the biological cells at the time of performing cauterization is obtained. An inductive reactance component (XL) is connected to an RF output terminal so as to cancel the capacitive reactance component (XC) (XC=XL), thus enabling the output impedance to have a resistance component. | 03-24-2011 |
| 20110071513 | COMMON-MODE NOISE FILTER OF RADIO FREQUENCY GENERATOR FOR RADIOFREQUENCY ABLATION - Disclosed herein is a common-mode noise filter of an RF generator for radiofrequency ablation. The common-mode noise filter of the RF generator for RFA amplifies an oscillation frequency provided by an oscillator to AC output using amplification means, and providing the amplified oscillation frequency to electrodes. The common-mode noise filter is disposed between the amplification means and the electrodes, thus eliminating harmonic components generated by the electrodes depending on conditions of medical treatment when the electrodes are used. Accordingly, the present invention can prevent the distortion of images or waveforms attributable to harmonic components from occurring in a diagnostic imaging device such as a diagnostic ultrasound system used together with the RF generator for RFA as well as in the RF generator's own display unit. | 03-24-2011 |
| 20110069518 | RESONANT INVERTER OF RADIO FREQUENCY GENERATOR FOR RADIOFREQUENCY ABLATION - Disclosed herein is the resonant inverter of a radio frequency (RF) generator for radiofrequency ablation (RFA). The resonant inverter of RF generator for RFA amplifies to high power an oscillation frequency output from an oscillator and provides the amplified oscillation frequency to an electrode. The resonant inverter processes the oscillation frequency output from the oscillator as a high-power sine wave having a frequency of 480 kHz and a Root Mean Square (RMS) power of 30 to 200 watts, and transfers the high-power sine wave to the electrode. | 03-24-2011 |
| 20110022151 | STENT - If smooth transportation of bile toward the duodenum is difficult due to cancerous cells growing in the bile duct or due to stricture of the bile duct, a cylindrical stent may be implanted into the stenosed site of the bile duct to enable smooth supply of bile. Conventional stents have no risk of slippage at an implanted position thereof, but suffer from invasively growing cancerous cells. Although a covered stent having a coating has been proposed to solve invasion of the growing cancerous cells, the covered stent may have a risk of slippage at an implanted position thereof and also, may cause pancreatitis and cholelithiasis. To solve the above described problems, disclosed herein is a stent to prevent backflow of food from the duodenum to the bile duct while assuring smooth transportation of bile without a risk of unwanted displacement caused by the transported bile. The stent includes a cylindrical outer stent, and a downwardly tapered inner stent covered with a polytetrafluoroethylene (PTFE) or silicone coating having biocompatibility. The inner and outer stents are coupled to each other to define a double structure. | 01-27-2011 |
| 20100191151 | BIPOLAR ELECTRODE TYPE GUIDE WIRE AND CATHETER SYSTEM - Provided are a guide wire and a catheter system. The catheter system includes a hollow catheter inserted into a fistula of a living body, the catheter having two open ends and a coaxially-formed lumen; and a bipolar electrode type guide wire including a wire body formed of a metal and elongated to be inserted into the catheter in one direction, an insulating material coated on an outer periphery of the wire body to insulate the wire, a first electrode attached to one end of the wire body, a second electrode spaced a predetermined distance apart from the first electrode, a first lead elongated along the wire body to be attached to the first electrode to electrically connect a radio-frequency generator for generating radio-frequency current to the first electrode, and a second lead elongated along the wire body to be attached to the second electrode to electrically connect the radio-frequency generator to the second electrode, the second lead being electrically insulated from the first lead. | 07-29-2010 |
| 20090286864 | Coating agent for drug releasing stent, preparation method thereof and drug releasing stent coated therewith - Disclosed are a coating agent for drug releasing stents, a method for preparing the same and a drug releasing stent coated therewith. The coating agent for drug releasing stents comprises nanoparticles with a biologically active material entrapped therein, wherein the particles are formed of a polyethyleneimine (PEI)-deoxycholic acid (DOCA) polymer (PDo) in which 1˜8 moles of DOCA are grafted per mole of PEI. | 11-19-2009 |
| 20090192627 | DOUBLE-TUBE TYPE STENT - A double-tube type stent is inserted into a hollow tubular organ such as a bile duct so as to relieve narrowing of the bile duct on, for instance, an anastomotic area of the intrahepatic bile duct of a liver transplant patient. A hollow cylindrical body has a plurality of rhombic spaces formed by weaving a superelastic shape-memory-alloy wire so as to be crossed. A silicon coating layer is coated on an outer surface of the cylindrical body using a silicon solution. A polytetrafluoroethylene (PTFE) tube is fixedly fitted around the cylindrical body having the silicon coating layer leaving a gap therebetween. | 07-30-2009 |
| 20080300296 | Coating agent for drug releasing stent, preparation method thereof and drug releasing stent coated therewith - Disclosed are a coating agent for drug releasing stents, a method for preparing the same and a drug releasing stent coated therewith. The coating agent comprises a biologically active material and a coating material selected from among pullulan acetate, represented by the following Chemical Formula 1, and a polyurethane-surfactant mixture. | 12-04-2008 |
| 20080262591 | Stent inserting device - A stent inserting device is used in inserting a self-expandable stent with leading and trailing ends into a tubular organ of a living body. The stent inserting device includes a grip body, an external tube attached to a front end of the grip body, a push member movably inserted into the external tube from a rear end of the grip body, and a tubular cap for removably receiving the stent in a compressed state. The tubular cap has a front end operatively connected to the push member and a rear end slidably fitted to a front end of the external tube. The stent inserting device is designed to hold the stent within the tubular cap in such a manner that the stent is first expanded at the trailing end and then gradually expanded toward the leading end when the tubular cap is pushed away from the external tube. | 10-23-2008 |
