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| Number | Title | Issue Date |
| 7304277 | Resonator with adjustable capacitor for medical device An apparatus, system and method of a resonator device with an adjustable capacitor for allowing the resonance frequency (F) of the resonator device to continue to be matched to the Larmor frequency of the MRI system. The resonator device includes an inductor coil, a... | 12/04/2007 |
| 7279664 | Resonator for medical device A resonator device including an induction coil, a conductive member positioned adjacent the induction coil, and a dielectric layer between at least a portion of the induction coil and the conductive member to form a capacitor structure. In one embodiment, the conduc... | 10/09/2007 |
| 7194297 | Impedance-matching apparatus and construction for intravascular device Intravascular device for matching impedances of portions of an intravascular circuit and limiting RF signal-induced heating of intravascular conductors. An intravascular device includes alternating conductive and dielectric layers and an electrically conductive coil... | 03/20/2007 |
| 7155272 | Catheter An ultrasound catheter includes a transducer unit used for observation of the inside of an organism, observation lumens in which the transducer unit is disposed and which extend in the direction of insertion into the organism, a first guide wire lumen provided subst... | 12/26/2006 |
| 7131986 | Catheter having exchangeable balloon An intravascular balloon catheter comprises a tubular catheter body having a balloon structure removably mounted over the catheter body. The catheter body has a guidewire lumen, and the catheter body may be left in place within a patient's vasculature while the ball... | 11/07/2006 |
| 6966891 | Catheter A catheter includes a sheath main body portion, a first lumen, a sheath distal end portion, and a second lumen. The sheath main body portion is inserted into an organism. The first lumen is a passage provided in the sheath main body portion and through which a guide... | 11/22/2005 |
| 6949072 | Devices for vulnerable plaque detection An intravascular probe includes a sheath with a distal portion and a proximal portion. The intravascular probe includes a first optical waveguide extending along the sheath, the first optical waveguide being configured to carry optical radiation between the distal a... | 09/27/2005 |
| 6702750 | Angioplasty apparatus facilitating rapid exchanges and methods The invention provides a nested tubing cannula which comprises outer and inner elongate tubular members, both having a proximal end, a distal end, and a lumen therebetween. The inner tubular member is sealed at its distal end and is nested substantially c... | 03/09/2004 |
| 6635054 | Thermal treatment methods and apparatus with focused energy application A collapsible ultrasonic reflector incorporates a gas-filled reflector balloon, a liquid-filled structural balloon an ultrasonic transducer disposed within the structural balloon. Acoustic energy emitted by the transducer is reflected by a highly reflecti... | 10/21/2003 |
| 6585657 | Angioplasty apparatus facilitating rapid exchanges The invention provides a nested tubing cannula which comprises outer and inner elongate tubular members, both having a proximal end, a distal end, and a lumen therebetween. The inner tubular member is sealed at its distal end and is nested substantially c... | 07/01/2003 |
| 6529779 | Inflatable electrode for temporary pacing A temporary balloon-type electrode for insertion and temporary fixation in a blood vessel of a heart, for determining a suitable place therein for a subsequently inserted and fixed permanent electrode, has a catheter and an inflatable and deflatable ballo... | 03/04/2003 |
| 6398792 | Angioplasty catheter with transducer using balloon for focusing of ultrasonic energy and method for use A catheter for insertion into an artery having deposits of plaque and/or thrombus includes, at its distal end an ultrasonic transducer and a dilatation balloon surrounding the transducer such that when the balloon is positioned in the artery adjacent the ... | 06/04/2002 |
| 6352683 | Apparatus and method for the local delivery of drugs A local and site-specific drug delivery apparatus for delivering a drug to a specific site is characterized by the combination of a carrier material which reflects or absorbs or emits electromagnetic or mechanical (e.g. ultrasonic) vibrations enabling the... | 03/05/2002 |
| 6022319 | Intravascular device such as introducer sheath or balloon catheter or the like and methods for use thereof An intravascular device such as an introducer sheath or a balloon catheter, and methods for use thereof, comprising an elongate member having a proximal end and a distal end and a first lumen and a second lumen. The first lumen communicates with a first p... | 02/08/2000 |
| 5989208 | Therapeutic ultrasound system An ultrasound system is disclosed having a catheter including an elongate flexible catheter body having at least one lumen extending longitudinally therethrough. The catheter further includes an ultrasound transmission member extending longitudinally thro... | 11/23/1999 |
| 5915383 | Cuffed medico-surgical tubes The cuff on the patient end of a tracheal tube is attached at one end to the inside of the tube and at the opposite end to the outside of the tube. The cuff encloses an axial sleeve that is slidably mounted within the patient end of the tube and is urged ... | 06/29/1999 |
| 5865178 | Method and apparatus for intravascular ultrasonography A catheter is provided for insertion into the blood vessel of a patient for ultrasonically imaging the vessel wall. The catheter includes a tubular element and an internally housed drive cable for effective a circumferential scan about the catheter of an ... | 02/02/1999 |
| 5860974 | Heart ablation catheter with expandable electrode and method of coupling energy to an electrode on a catheter shaft An expandable ablation electrode is provided on a catheter constructed to access the heart. When the electrode is introduced to the heart, it is small and suitably flexible to maneuver through the torturous path. However, when the catheter is in place in ... | 01/19/1999 |
| 5640963 | Eye fundus blood flow meter An eye fundus blood flow meter has probing beam applying device for applying probing beam to a blood vessel on the fundus of an eye to be examined, a light receptor for receiving the scattered light of the probing beam from the vicinity of the blood vesse... | 06/24/1997 |
| 5520189 | Intravascular ultrasound imaging guidewire An ultrasonic imaging guidewire apparatus for ultrasonic diagnostic imaging of blood vessels, comprising: an elongated, flexible, catheter guide (10) having a plurality of electrical conductors, a transducer seat (11), attached to transducer seat (11) an ... | 05/28/1996 |
| 5501227 | Angioplasty apparatus facilitating rapid exchange and method Apparatus for introduction into the vessel of a patient comprising a guiding catheter adapted to be inserted into the vessel of the patient and a device adapted to be inserted into the guiding catheter. The device includes a flexible elongate member and a... | 03/26/1996 |
| 5472406 | Apparatus and method for vasodilation A method and apparatus for dilating blood vessels in vasospasm through the use of high frequency wave, e.g., hydraulic or acoustic waves. The invention is suitable to treat any vasospasm, including any vasospasm intractable to medication, including cerebr... | 12/05/1995 |
| 5431628 | Pressure-sensing diagnostic catheter The invention relates to catheters having a distally-mounted balloon and pressure sensor and to methods of placing such catheters within physiological vessels. Catheters have a central lumen extending through the catheter and a pressure sensor which lies ... | 07/11/1995 |
| 5421338 | Acoustic imaging catheter and the like Acoustic imaging balloon catheters formed by a disposable liquid-confining sheath supporting a high fidelity, flexible drive shaft which carries on its end an ultrasound transducer and includes an inflatable dilatation balloon. The shaft and transducer ro... | 06/06/1995 |
| 5409000 | Endocardial mapping and ablation system utilizing separately controlled steerable ablation catheter with ultrasonic imaging capabilities and method Endocardial mapping and ablation system for introduction into a chamber of the heart formed by a wall and having a passage leading thereto comprising a catheter probe having a distal extremity adapted to be positioned in the chamber of the heart. The cath... | 04/25/1995 |
| 5327885 | Combination catheter for invasive probe delivery and balloon dilation A catheter for delivering both a probe and a balloon to a lumen in a subject. The probe is most preferably an ultrasonic imaging probe and the balloon a dilation balloon. The catheter comprises, at a proximal end, a triple lumen section that comprises a g... | 07/12/1994 |
| 5312430 | Balloon dilation catheter Disclosed is an apparatus and method for the treatment of the symptoms of obstructive prostatism. The apparatus comprises an expandable dilation catheter and preferably an axially elongate sheath, adapted for transurethral insertion via the external openi... | 05/17/1994 |
| 5246016 | Transport catheter and multiple probe analysis method A method of sequentially analyzing various body conditions with a plurality of probes is disclosed. Also disclosed, is a catheter which can be used to practice the method. The catheter has several independent lumens extending longitudinally therethrough f... | 09/21/1993 |
| 5226421 | Doppler elongate flexible member having an inflatable balloon mounted thereon A doppler guide wire having an inflatable balloon thereon which is inflatable with a balloon inflation medium. An elongate flexible member having proximal and distal extremities. An ultrasonic transducer is secured to the distal extremity of the elongate ... | 07/13/1993 |
| 5167233 | Dilating and imaging apparatus A dilating and imaging apparatus for attaching to and receiving pressurized fluid from a distal end of a catheter. The apparatus includes an inflatable balloon and an imaging device positioned behind an expandable portion of the balloon and upstream of th... | 12/01/1992 |
| 5117831 | Vascular catheter having tandem imaging and dilatation components A combined ultrasonic imaging and dilatation catheter includes an inflatable dilatation balloon located at the distal end of a flexible catheter body. An ultrasonic imaging system including a fixed ultrasonic transducer and a rotatable reflective surface ... | 06/02/1992 |
| 5109859 | Ultrasound guided laser angioplasty A laser ablation catheter system guided by ultrasound sonography particularly useful for removing atherosclerotic plaque from coronary arteries of patients with heart disease and it method of use are detailed. Ultrasound is employed at the tip of the cath... | 05/05/1992 |
| 5046503 | Angioplasty autoperfusion catheter flow measurement method and apparatus An angioplasty autoperfusion catheter flow measurement apparatus includes a balloon catheter having an autoperfusion lumen incorporated therein which is acoustically in communication with a flow velocity measuring system. The flow measuring system may inc... | 09/10/1991 |
| 5030227 | Balloon dilation catheter Disclosed is an apparatus and method for the treatment of the symptoms of obstructive prostatism. The apparatus comprises an expandable dilation catheter and preferably an axially elongate sheath, adapted for transurethral insertion via the external openi... | 07/09/1991 |
| 5020539 | Ultrasonic endoscope apparatus An ultrasonic endoscope apparatus having a distal end cap provided with an ultrasonic transmission window through which an ultrasonic beam is transmitted in a radial direction perpendicular to the axis of a probe of the apparatus, and a cylindrical member... | 06/04/1991 |
| 4841977 | Ultra-thin acoustic transducer and balloon catheter using same in imaging array subassembly An array of miniature ultrasound crystals mounted on preassembled subassembly which is, in turn, mounted on a small lumen catheter provides dimensional and other quantitative information relating to arterial wall geometry and character at disease or obstr... | 06/27/1989 |
| 4674336 | Volumetric flow rate determination in conduits not directly accessible A catheter, particularly adapted for cardiac output determination, comprises an elongated tube of flexible material, the tube having a substantially rigid distal portion on which is disposed an ultrasonic transducer and a proximate, inflatable balloon. Th... | 06/23/1987 |
| 4671295 | Method for measuring cardiac output Blood flow in the aorta and pulmonary artery of a mammal, most typically a human, is measured volumetrically by a non-invasive, ultrasound method and apparatus. The method comprises placing a piezoelectric ultrasound transducer in the trachea in great pro... | 06/09/1987 |
| 4637401 | Volumetric flow rate determination in conduits not directly accessible A catheter, particularly adapted for cardiac output determination, comprises an elongated tube of flexible material, the tube having a substantially rigid distal portion on which is disposed an ultrasonic transducer and a proximate, inflatable ballon. The... | 01/20/1987 |
| 4462408 | Ultrasonic endoscope having elongated array mounted in manner allowing it to remain flexible The invention is a fiber-optic endoscope which has an elongated ultrasonic array, such as a linear array or a phased array. The array is mounted on either the distal portion of the bending section (not under operator control) portion of the endoscopic tub... | 07/31/1984 |
