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4294259 |
Method and apparatus for characterizing blood flow through the heart
An automated method and improved device provide a measurement of blood flow through the heart by the detection and analysis of radioactivity emitted by a radioactive tracer introduced into a...
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4294260 |
Cystourethrographic examination chain
A cystourethrographic chain for insertion into the urethra and bladder of a patient. A cystourethrographic chain having a flexible inner tensioning member with a smoothly contoured forward stop and...
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4266549 |
Laser scalpel
Disclosed herein is a laser scalpel which uses a krypton beam or a ray of light projected from a mercury lamp having a wave-length in the range of 3,950-4,200A as a guide light converging at the...
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4263916 |
Image averaging for angiography by registration and combination of serial images
A method and apparatus for angiography in which information contained within multiple serial images of contrast medium flowing through a blood vessel is combined to form a single image having...
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4249825 |
Method and apparatus suitable for ocular blood flow analysis
Glaucoma and other diseases may be detected by the analysis of angiograms to determine ocular blood flow. Using rapid sequence photography an ocular image is recorded on successive film frames. To...
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4243884 |
Probe assembly
A hand-held probe assembly, suitable for monitoring a radioactive fibrinogen tracer, is disclosed comprising a substantially cylindrically shaped probe handle having an open end. The probe handle...
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4243652 |
Gastrointestinal scanning agent
Technetium-99m has ideal characteristics for imaging the upper and lower GI tract and determining stomach emptying and intestinal transit time when used with an insoluble particulate material. For...
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4240440 |
Method and apparatus for nuclear kymography providing a motion versus time display of the outer transverse dimensions of an organ
A system and method for obtaining a nuclear kymogram of regional wall motion of an organ under study such as a human heart includes injecting a radioisotope into the blood stream which accumulates...
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RE30317 |
Method and apparatus for determining the perfusion efficiency factor of animal tissue
The perfusion rate in animal tissue is measured percutaneously at a specific locus, and at the same time the indicator concentration is percutaneously measured at the same locus so that the...
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4202345 |
Apparatus for delivering and receiving radioactive gas
An apparatus for delivering and receiving gas to and from a patient, such as for lung ventilation studies. In accordance with the invention there is provided a restrictive breathing chamber adapted...
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4197836 |
Nuclear cardiac blood volume detecting apparatus
A built up image illustrating blood volume in the heart versus time taken over many cardiac cycles is produced by continuously displaying a graph of cumulative data indicating the amount of...
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4192438 |
Device for delivering radioactive gas from a sealed vial
A gun type device for removing radioactive gas from a sealed hypodermic type vial. The device includes a sealable recess including a pair of concentric hollow needles which penetrate the vial upon...
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4183353 |
Method and position marker for the detection of deep vein thrombosis
Disclosed is a position marker in the form of a crescent ink stamp or the like for use in conjunction with a detector apparatus for detecting deep vein thrombosis. When in use, the position marker...
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4181939 |
Scanner data multiplexer for interfacing a radiation detector array and a computer
Device for providing communication between a radiation detector array and a general purpose computer and to receive accumulated scintillation counts from the array of detectors and deposit the same...
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4172449 |
Body fluid pressure monitor
Body fluid pressure is monitored by implanting a sensor in the body which is responsive to the pressure therein. The sensor communicates with radiopaque means which changes its position when there...
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4161944 |
Laser system and method and laser amplifier for use therewith
A laser system employs a laser amplifier doped with Neodymium ions having a planar input surface receiving a laser beam having a wavelength of 1.06 microns from a laser generator also employing a...
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4138998 |
Indicating temperature within living tissue
A reflector that reflects a microwave signal as a function of temperature is implanted within living tissue of a human. A microwave signal is transmitted to the reflector via an applicator in...
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4136683 |
Intracellular temperature measurement
The process comprises introducing minute particles into the interior of the cells. These particles being injected intraveneously while suspended in an appropriate solution are of the size generally...
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4114606 |
Monitoring apparatus for resonant circuit intracranial pressure implants
The invention relates to interrogation, detection, and monitoring apparatus useful for monitoring changes in the resonant frequency of a passive L-C circuit implanted in the cranium, the resonant...
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4096853 |
Device for the introduction of contrast medium into an anus praeter
A device for the introduction of contrast medium into an anus preater shaped in the abdominal wall using an inlet pipe to be inserted into the anus, which comprises an inlet pipe surrounded by a...
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4092980 |
Fibrinogen monitor
A fibrinogen monitor for use in monitoring the concentration of iodinated fibrinogen distribution in the calf and thigh veins of bed-restricted patients. The fibrinogen monitor is an improved...
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4090502 |
Remote-controlled barium injection apparatus
Injection of barium into the lower digestive tract of a patient to be examined and subsequent reflux and evacuation of the barium by air compression is effected by remote control whereby greater...
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4074709 |
Method and device for facilitating double-contrast studies of the upper gastrointestinal tract
A method and device for obtaining the type of gastric mucosal coating of a human being's upper gastrointestinal tract to enable a double-contrast study of said tract to be performed are disclosed....
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4069813 |
Method and apparatus for applying stress for knee arthrography and the like
For use chiefly in arthrography, a strap is looped about the limb above the joint (for example, the knee) to be studied; and the strap loop is adjusted so that an edge grasping member,...
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4031884 |
Apparatus for correlating the respiratory and cardiac cycles
An apparatus for correlating the respiratory and cardiac cycles includes a circuit for defining a chosen period in the progress of the respiratory cycle as the end of a regulatable delay beginning...
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4026276 |
Intracranial pressure monitor
Pressure monitoring apparatus implantable in the cranium to measure intracranial pressure, the apparatus comprises a passive resonant circuit having a natural frequency influenced by ambient...
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4015592 |
Nuclear medicine system for imaging radiation
Disclosed is a system for forming a two-dimensional nuclear radiation image at a location inside an animal body and for transmitting a representation of the two-dimensional image to a location...
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3976050 |
Device for adsorbing exhaled radioactive gases and process
Sorption means are provided for sorbing radioactive gases, as in the exhalations of a living subject, especially for nuclear diagnostic test studies, comprising means for adsorbing the radioactive...
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3957033 |
Ventilation study system
A disposable ventilation study system for dispensing a single-patient dosage of gaseous radioisotopes to patients for pulmonary function studies is disclosed. A gas impermeable capsule encloses the...
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3927660 |
Lymph duct cannulator and method
This invention is directed to a product for and method of lymph duct cannulation which includes surgical isolation of a lymph duct, placing the duct in a groove of a lymph duct holder, occluding...
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3916875 |
Lymph duct cannulation facilitator
A device is provided to facilitate lymph duct cannulation. An enclosed chamber having a pair of pliable membranes surrounds a portion of the duct. The chamber pressure is reduced to aid dilation of...
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3893447 |
Simultaneous angiography of the separate retinal and choroidal circulations
Simultaneous angiography of the separate retinal and choroidal circulations of the human eye is accomplished following a single intravenous injection of a mixture of at least two dyes having...
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3890959 |
Method for determining discrete localized blood flow in a large volume of tissue
A method for determining discrete localized blood flow in a large volume of tissue, such as local cerebral emission flow in a discrete radiation emission detection zone of a patient's brain. The...
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3888234 |
Urethrogram device
A device for use in inserting dye into the urethra preparation to taking x-rays thereof including an elongated hollow tube having an ovoid enlargement at the distal end thereof and a frusto-conical...
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3884220 |
Method for injecting X-ray contrast media for venography of the female pelvis
A method for injecting x-ray contrast media into the wall of the uterus a predetermined depth to make a record of the venous plexus system of the uterus. A straight rod probing member having a...
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3881463 |
Radioactive gas inhalator
The present invention relates to an "inhalator"; and more particularly relates to apparatus for permitting a patient to inhale a radioactive gas, in order to provide a diagnostic test of the...
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3863623 |
METHOD FOR MICROSCINTIGRAPHIC EVALUATION STUDIES
A method for making microscintigraphic evaluation studies in small areas at or adjacent to the surface of the body, such as evaluation of the dynamics of lacrimal flow from the eye through the...
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3844274 |
INSTRUMENT FOR INSERTING BEAD CHAIN INTO URETHEA AND BLADDER
A medical instrument to insert a bead chain within a patient's bladder wherein the instrument is formed into a scissors configuration with the operational ends of the scissor members including an...
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3814080 |
VESSEL CANNULATOR AND CLAMP FOR LYMPHANGIOGRAPHY
A needle guide is formed with a tubular section and an opened trough section connected thereto in aligned-spaced relationship. A clip member is formed and arranged to releasably engage an open side...
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3777742 |
TANTALUM INSUFFLATOR
Apparatus for insufflating the airways of a patient with tantalum dust, either by the inhalation method or the catheter method.
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3769967 |
PULMONARY INHALATION DEVICE
A device for use in making pulmonary studies involving the breathing into the lungs of radioactive tagged gasses. A face mask is attached to the distal end of an arm which is pivotally supported by...
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3769962 |
BARIUM ENEMA ADMINISTRATION METHOD AND APPARATUS
Barium enema fluid is supplied to a patient through a three-way union of conduits, one of which is connected to a gravity fed barium supply source, another of which is connected with a source of...
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3769966 |
APPARATUS FOR DETERMINING LOCAL CEREBRAL BLOOD FLOW
An apparatus for determining local cerebral blood flow in a discrete radiation emission detection zone of a patient's brain. The brain is subdivided into a plurality of detection zones, such as...
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3741198 |
RADIOLOGICAL DIAGNOSTIC METHOD
A radiological diagnostic method is provided in which a radiopaque ferrofluid is injected into a body system which is to be studied, such as the subarachnoid space surrounding the spinal cord. The...
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3695254 |
METHOD AND APPARATUS FOR DETERMINING VOLUME OF A LUNG
A method and apparatus for dispensing a known and unknown volume of gas into the lungs of a vertebrate, for processing pulsatile input data from a sensing system for direct digital calibration and...
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3683890 |
CARRIER SYSTEM FOR DELIVERY OF AN END OF AN ELONGATED MEMBER TO THE UPPER GASTROINTESTINAL TRACT
A two stage device for delivering an elongated member to the upper gastrointestinal tract consisting of an outer gelatin pharmaceutical capsule which dissolves in the stomach, an inner open ended...
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3651318 |
CARDIAC OUTPUT COMPUTER
A method and apparatus for determining the rate of flow of a substance such as blood in a closed circulatory system whereby a detectable indicator substance is injected into the blood upstream of...
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3592185 |
FERROMAGNETIC CONTRAST MEDIA AND METHOD OF USE
Ferromagnetic contrast media incorporating magnetic ferrites such as magnesium ferrite, barium ferrite, manganese ferrite, manganese-zinc ferrite, nickel ferrite, magnetite, or ferromagnetic...
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3575160 |
INSTRUMENTS FOR ADMINISTERING FLUIDS INTO THE INTESTINAL TRACT PER RECTUM
An instrument for administering fluid into the intestinal tract per rectum, which includes a tube having a rectum entering end portion, the tube having enlargements distally of said end portion...
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3556082 |
METHOD AND APPARATUS FOR MEASUREMENT OF CARDIAC OUTPUT
A method and apparatus for determining the true cardiac output from a detected dilution curve having an exponential decay by integrating the area under the curve up to a predetermined point...
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