Matches 201 - 250 out of 322 < 1 2 3 4 5 6 7 >
Match Document Document Title
5050606 Method for measuring pressure within a patient's coronary artery  
A guiding member for use as an independent guidewire or as an integral part of a low-profile steerable dilatation catheter. The guiding member has an elongated main hollow tubular member, a tubular...
5048532 Method and apparatus for measuring blood pressure  
A method and appartus are provided for measuring left atrial pressure by inserting a sensing probe into the esophagus and positioning the probe so that pressure from the left atrium is sensed by...
5048537 Method and apparatus for sampling blood  
A source of saline solution under pressure is connected through tubing to a catheter inserted in a patient's blood vessel. A waste collection bag is connected to the tubing through a stopcock which...
5046497 Structure for coupling a guidewire and a catheter  
A method and system for introducing one or more devices into a biological fluid vessel. The system includes a device having a coupling structure comprising a pair of spaced-apart fingers adapted...
5035246 Method for carrying out hemodynamic measurements on a patient and flow-directed balloon catheter used for this  
A method for carrying out hemodynamic measurements on a patient, using a low-directed balloon catheter, which is connected to a measuring unit and is at least provided with a distal measuring lumen...
5025786 Intracardiac catheter and method for detecting and diagnosing myocardial ischemia  
An intracardiac catheter and method for detecting and diagnosing myocardial ischemia. The intracardiac catheter comprises a flexible, elongated body which is insertable into the heart of the...
5022396 Catheter for simultaneously measuring monophasic action potential and endocardiac cavity pressure  
A catheter capable of simultaneously measuring the action potential of myocardiac cells by means of a pair of electrodes, and the endocardiac cavity pressure by means of a pressure transducer. One...
5000190 Continuous cardiac output by impedance measurements in the heart  
A diagnostic catheter for use in measuring cardiac output in the right ventricular chamber of a heart includes a catheter body having an outer periphery and a distal section terminating in a distal...
4998977 Puncture set for medical use  
A puncture set and method to avoid blood loss when emplacing a catheter by a puncture set according to the Seldinger technique, and to enable blood pressure measurement during the puncturing,...
4981140 Method and apparatus for arterial and venous blood sampling  
A method and apparatus for arterial and venous blood sampling. The apparatus includes an efficient means of purging the fluid line and a fluid sampling device chamber of residue heparin solution to...
4969470 Heart analysis using pressure-controlled intermittent coronary sinus occlusion  
The coronary sinus is intermittently occluded by use of means for occluding the sinus, a pressure transducer for sensing the fluid pressure within the sinus and providing corresponding fluid...
4966148 Assembly for positioning diagnostic devices in a biological vessel  
A method and assembly for inserting one or more diagnostic sensors into a biological fluid vessel for diagnosing the condition of the vessel or fluid. Different types of diagnostic sensors, such as...
4964409 Flexible hollow guiding member with means for fluid communication therethrough  
A guiding member for use as an independent guidewire or as an integral part of a low-profile steerable dilatation catheter. The guiding member has an elongated main hollow tubular member, a tubular...
4953553 Pressure monitoring guidewire with a flexible distal portion  
A pressure monitoring guidewire and method of using the same for a coronary procedure such as angioplasty, angiography, or valvuloplasty. The guidewire has a main tubular member and a more flexible...
4947856 Fluid pressure monitoring and flow control apparatus  
Apparatus for monitoring fluid pressure and controlling fluid flow in a fluid line. The apparatus (10) includes a base (36) and a cover (38), between which is captured a membrane (42). The base...
4944724 Apparatus for locating body cavities having signaling indicator  
An apparatus for locating a body cavity having a fluctuating fluid pressure by signaling the fluctuating pressure when the cavity is entered and then transporting fluid either into or out of the...
4941473 Guide for mechanical guiding of a catheter in connection with cardio and vascular examination  
A guidewire for guiding a catheter is provided including a pressure sensor at the distal end of the guidewire and a ventilation passage for connecting the pressure sensor to ambient pressure.
4936310 Catheter for intravascular pressure measurement  
The invention relates to a catheter for intravascular pressure measurement. The catheter includes a leader (3) with a transducer (4). The leader is surrounded by an inner sheath (2) with a reduced...
4934375 Flush-valve assembly for blood pressure measurement catheter  
A resilient valve core, biased against its seat in a molded body, controls large flow volumes for flushing. A small resilient tube embedded in the core bypasses the valve to provide smaller flow...
4928693 Pressure monitor catheter  
A blood pressure monitoring catheter for use in a Monorail™ intravascular system for measuring the pressure gradient across a stenotic lesion. It comprises an elongated, flexible, plastic,...
4924872 Tubular pressure transducer  
In a blood pressure monitoring system, a transducer which is a conductive rubber tube having conductive terminals at each end, and circumferentially spaced conductors connected to said...
4924877 Pressure sensing catheter  
A pressure sensing catheter includes a pressure sensor within the length of a hollow catheter insertable into the human body. The catheter has a surrounding circumferential pressure transmitting...
4901735 Pressure meter catheter with in-situ zero setting  
In a pressure meter catheter which carries a pressure sensor in its measuring tip a reference pressure is admitted to effect zero setting in accordance with the invention while the instrument is in...
4901731 Single sensor pressure differential device  
An apparatus and method for sensing in vivo the fluid pressure differential between spaced locations in a biological fluid vessel using a single pressure transducer. The transducer has a deformable...
4899752 System for and method of therapeutic stimulation of a patient's heart  
A system for therapeutic stimulation of a patient's heart includes means for varying the escape interval or rate of a means for producing pacing pulses. Pressure sensing means sense pressure at a...
4887608 Method and apparatus for estimating tissue damage  
The coronary sinus is intermittently occluded by use of means for occluding the sinus, a pressure transducer for sensing the fluid pressure within the sinus and providing corresponding fluid...
4878898 Thermodilution and pressure transducer balloon catheter  
A multi lumen balloon catheter suitable for pulmonary artery catheterization incorporating both pressure and temperature measurement functionalities by means of a forward facing transducer strain...
4877035 Measurement of the end-systolic pressure-volume relation using intraaortic balloon occlusion  
Novel, noninvasive in vivo methods and apparatus for measuring the end-systolic pressure-volume relation and deriving peak end-systolic elastance, E max , which do not alter intrinsic or...
4869263 Device and method for measuring volumetric blood flow in a vessel  
Device for measuring volumetric blood flow in a vessel comprising a catheter having proximal and distal extremities. A balloon is carried by the distal extremity of the catheter. A balloon...
4858615 Catheter sensor and memory unit  
The sensor and memory unit (30, 92 or 94) includes a sensor assembly (34) having at least one sensor (48, 50 or 96) therein and a memory (18, 22, 70, 98) associated and fixed therewith. In one...
4856529 Ultrasonic pulmonary artery catheter and method  
Catheter for making measurements in a vessel defined by a wall carrying a fluid comprising an elongate flexible tubular member having a plurality of lumens extending therethrough and having...
4850358 Method and assembly for introducing multiple devices into a biological vessel  
A method and assembly for inserting a plurality of sensors into a biological fluid vessel for diagnosing the condition of the vessel or fluid. A pressure sensor is described which is particularly...
4846191 Device for chronic measurement of internal body pressure  
Measurement of a physiological pressure is accomplished by placement of a pressure transmitting catheter within a blood vessel or other structure within which pressure is to be measured. The...
4834108 Blocking filter to prevent air flow into a fluid conduit to a transducer  
This invention is shown with two modes of construction and use. In the first arrangement, there is provided a dual tubular fluid conductor in which the blocking filter is positioned at the entering...
4819653 Multi-function fluid communication control system  
The present invention is a multi-function fluid communication control system for effecting selective automated control to provide selected fluid communication between fluid reservoirs, instruments,...
4813423 Instrument for measuring living body components  
Disclosed is an instrument for measuring living body components, which has (i) a fine tube having at one end thereof a connection portion to be connected to an indwelling needle or indwelling...
4798211 Diagnostic methods and apparatus employing monitoring of myocardial ischemia  
A method and apparatus monitor myocardial ischemic events in various medical applications for providing continuous and contemporaneous information regarding, for example, modifying the amount of...
4798588 Central venous pressure catheter and method for using  
A central venous pressure catheter has a long flexible tube containing at least three channels or lumens. Toward the tip or distal end of the catheter are three ports in the wall of the tube each...
4796641 Device and method for chronic in-vivo measurement of internal body pressure  
A device capable of sensing pressure allows the sensor and amplifying electronics to be packaged in a very small size and implanted within the body. The sensor consists of a small catheter, the tip...
4780418 Method and apparatus for measuring the aggregation of blood platelets or the coagulation of blood  
A method and apparatus are disclosed for measuring the aggregation of blood platelets or the coagulation of blood, the apparatus including a capillary tube for drawing blood, a piston in...
4779625 Damping device for circulatory pressure measuring apparatus  
A damping device for use in conjunction with a circulatory pressure measuring system to attenuate resonant pressure waves therein includes a series connector for connection to the pressure...
4779626 Method and apparatus for compensating for transducer position in blood pressure monitoring system  
A method and apparatus for ensuring accurate measurement of blood pressure regardless of the position of the sensing transducer relative to the position of the patient's heart. The method and...
4776343 Disposable pressure transducer for use with a catheter  
A disposable blood pressure transducer system for use with a catheter with or without a catheter flush/flow valve. The transducer housing has both electrical and fluid connections, with the...
4771782 Method and assembly for introducing multiple catheters into a biological vessel  
A method and assembly for inserting a plurality of sensors into a biological fluid vessel for diagnosing the condition of the vessel or fluid. A pressure sensor is described which is particularly...
4763649 Technique for creating a zero reference for an external pressure transducer  
Apparatus for measuring the blood pressure of a patient, comprising a catheter, a first transducer mounted in an end portion of said catheter so as to produce at an output thereof a signal...
4741328 Means for intraaortic assist and method of positioning a catheter therefor  
A method and apparatus to provide an improved cardiac assist by the use of a new form of intraaortic balloon are described. A single small balloon may be placed in the ascending aorta close to the...
4739769 Tissue pressure measurement transducer system  
This invention provides a means of measurement tissue pressure in muscle compartments and other regions in humans and other animals. An appropriate length, for example, 6 to 12 inches of thin...
4738265 Dual stop cock  
A system for measuring first and second fluid pressures within a patient comprising a valve having first and second positions, first and second conduits for providing communication between a fluid...
4738267 Implantable, intracranial-pressure sensor  
The invention relates to a pressure sensor implanted into the skull to emit an electrical signal representing the intra-cranial pressure; this sensor is of the type which includes on one hand a...
4718425 Catheter with pressure sensor  
A catheter equipped with a pressure sensor, which is composed of a fine insertion tube provided with the pressure sensor at the tip thereof and having sufficient stiffness to permit its insertion...
Matches 201 - 250 out of 322 < 1 2 3 4 5 6 7 >