Bizarre Patents
Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4948248 | Blood constituent measuring device and method A method and device are disclosed for the detection of the relative percentage of at least one light absorber in the blood stream of living tissue. The method and device are based upon the employment of a narrow band width amplifier and pulses of differen... | 08/14/1990 |
| 4942877 | Device for measuring oxygen saturation degree in arterial blood An improved oximeter device for the calculation of oxygen saturation in arterial blood is provided. A pair of LED's are positioned to transmit red and infrared light through tissue containing the blood. A photo electric converter is provided to receive th... | 07/24/1990 |
| 4936679 | Optical fiber transducer driving and measuring circuit and method for using same Disclosed in an optical fiber transducer system with energy generating means for transmitting pulsing energy at various frequencies to bidirectional couplers for each frequency. The couplers record the intensity and further transmit the pulsing energy to ... | 06/26/1990 |
| 4927264 | Non-invasive measuring method and apparatus of blood constituents In order to measure the oxygen saturation in venous blood, a venous blood stream is made time-variant by applying pressure with a peak value of the minimum blood pressure to a proximal portion from a measuring part. Light beams with different wavelengths ... | 05/22/1990 |
| 4907876 | Examination apparatus for measuring oxygenation in body organs An examination apparatus which measures the oxygenation in objects with near infrared light transmission spectrophotometry and that automatically adjusts a transmission light quantity to a magnitude suitable for detection by a photomultiplier tube. The ex... | 03/13/1990 |
| 4908762 | Oximeter with system for testing transmission path An examination apparatus measures the oxygenation in body organs by the near infrared light transmission spectrophotometry. To inspect the examination apparatus itself before the oxygenation measurement, an illumination-side fixture and a detection-side f... | 03/13/1990 |
| 4900933 | Excitation and detection apparatus for remote sensor connected by optical fiber Sensing apparatus for remote sensing of quantities such as blood oxygen concentration using a phosphorescent material located at one end of an optical fiber. The phosphorescent material emits a relatively long-lived luminescence when exposed to energy in ... | 02/13/1990 |
| 4892101 | Method and apparatus for offsetting baseline portion of oximeter signal A feedback control system is disclosed for use in processing signals employed in pulse transmittance oximetry. The signals are produced in response to light transmitted through, for example, a finger at two different wavelengths. Each signal includes a sl... | 01/09/1990 |
| 4883353 | Pulse oximeter A pulse oximeter having a sensor responsive to light transmitted through an area of blood flow which is optically absorbed by hemoglobin for producing a pulsatile waveform indicating the current pulsatile component of blood flow. A process waveform is cre... | 11/28/1989 |
| 4880304 | Optical sensor for pulse oximeter An improved optical sensor which has increased sensitivity and which is resistant to the effects of ambient light. In one embodiment of the invention, the sensor housing has a flat lower face with a central protrusion in which a plurality of light emittin... | 11/14/1989 |
| 4867571 | Wave form filter pulse detector and method for modulated signal A device and method for determining pulses in a modulated signal is disclosed. The modulated signal is processed and converted into a quantized analog type of digital data stream. The data stream is evaluated over time by considering preceeding and subseq... | 09/19/1989 |
| 4867557 | Reflection type oximeter for applying light pulses to a body tissue to measure oxygen saturation A reflection type oximeter comprises light emitting diodes (11 to 16) as first to sixth light sources which emit first and second beams of a wavelength involving a change in absorption due to a change an oxygen saturation of hemoglobin in blood of a tissu... | 09/19/1989 |
| 4865038 | Sensor appliance for non-invasive monitoring A sensor appliance removably attachable to a living body for non-invasively producing signals indicative of a condition of the body and applying them to a monitoring or measuring device and method of making the appliance characterized by a small, highly f... | 09/12/1989 |
| 4863265 | Apparatus and method for measuring blood constituents An apparatus for noninvasive determination of constituent concentrations utilizing light wave absorption measurements and methods for processing signals generated by such measurements.... | 09/05/1989 |
| 4859056 | Multiple-pulse method and apparatus for use in oximetry The disclosed invention is for use in extracting more accurate information from signals employed in pulse oximetry. Basically, pulse oximetry involves the illumination of arterial blood flowing in tissue with light at two wavelengths. Upon emerging from t... | 08/22/1989 |
| 4854699 | Backscatter oximeter A noninvasive optical oximeter for measuring oxygen saturation of arterial blood. A sample of blood is illuminated with light at four different wavelengths. Light reflected by the blood is sensed by a photodetector and a plurality of output signals are cr... | 08/08/1989 |
| 4848901 | Pulse oximeter sensor control system A pulse oximeter is provided including two light emitting diodes. Each LED is energized by a unique modulation signal. Light produced by the LEDs passes through the tissue of a subject and is detected by a photodiode. The photodiode signal is separated by... | 07/18/1989 |
| 4846183 | Blood parameter monitoring apparatus and methods A pulse oximeter or plethysmographic device utilizes light varying in intensity at a predetermined carrier frequency. A passive resonant circuit having a resonant frequency substantially equal to the carrier frequency is connected between the photodetecto... | 07/11/1989 |
| 4834532 | Devices and procedures for in vitro calibration of pulse oximetry monitors A device and method for calibration of pulse oximeters is disclosed. A standard specimen that has optical charactertistics of hemoglobin of a known oxygen saturation is placed in the light path of a pulse oximeter probe. The image of a pulse is also creat... | 05/30/1989 |
| 4832484 | Apparatus for determining the concentration of a light-absorbing material in blood An apparatus for determining the concentration of a light-absorbing material contained in blood flowing through a tissue which minimizes the amount of error caused by noise and which ensures highly precise results at all times. The apparatus operates acco... | 05/23/1989 |
| 4825872 | Finger sensor for pulse oximetry system A finger sensor for a pulse oximetry system is provided having a body of flexible, resilient polymeric material formed as a pocket. On the inside walls of the pocket toward the closed end are a LED light source and an opposing photodetector. The space wit... | 05/02/1989 |
| 4824242 | Non-invasive oximeter and method The present invention relates to an oximeter for monitoring oxygen saturation of arterial blood. Light of two wavelengths is transmitted through a specimen. Detectors measure the attenuation of light through the specimen to produce two modulating data str... | 04/25/1989 |
| 4819752 | Blood constituent measuring device and method A blood constituent measuring apparatus and method, which can be used to measure the oxygen (or other blood constituent) content of the blood. The apparatus includes sources of two or more wavelengths of light for transmitting, e.g., red and infrared ligh... | 04/11/1989 |
| 4819646 | Feedback-controlled method and apparatus for processing signals used in oximetry A feedback control system is disclosed for use in processing signals employed in pulse transmittance oximetry. The signals are produced in response to light transmitted through, for example, a finger at two different wavelengths. Each signal includes a sl... | 04/11/1989 |
| 4813421 | Oxygen sensing pacemaker A heart pacemaker including a two wave length reflectance oximeter for determining oxygen saturation. The pacing rate is increased or decreased in response to the measured oxygen saturation. By appropriate multiplexing and timing functions, the two wave l... | 03/21/1989 |
| 4813420 | Hemolysis reaction measuring device A hemolysis reaction measuring device includes a hemolysis reacting member made of a light transmitting material and adapted to cause hemolysis reaction to take place therein, a light source supported so as to be able to project light toward a side portio... | 03/21/1989 |
| 4810655 | Method for measuring oxygen concentration Methods and compositions are described for measuring oxygen concentration, particularly for monitoring oxygen in the blood with a fiber optic catheter. Oxygen concentration is determined by observing quenching of the emission from a luminescent (phosphore... | 03/07/1989 |
| 4807630 | Apparatus and method for use in pulse oximeters A method of exposing a patient's extremity to light of two wavelengths and detecting the absorbance of the extremity at each of the wavelengths is provided comprising the steps of: (a) generating pulses of light having the first wavelength at a first puls... | 02/28/1989 |
| 4807632 | Measuring instrument for intracardial acquisition of the blood oxygen saturation of a patient for controlling the pacing rate of a heart pacemaker A measuring instrument for the intracardial acquistion of the blood oxygen saturation of a patient for use in controlling a heart pacemaker implanted in the patient has a measuring probe with a measuring current path which includes a light transmitter and... | 02/28/1989 |
| 4807631 | Pulse oximetry system A pulse oximetry system is provided in which LEDs of two different wavelengths illuminate tissue containing arterial blood flow. A photodiode receives light from the LEDs and produces electrical signals containing pulsatile components. The components of t... | 02/28/1989 |
| 4805623 | Spectrophotometric method for quantitatively determining the concentration of a dilute component in a light- or other radiation-scattering environment A spectrophotometric method is described of quantitatively determining the concentration of a dilute component in either a clear or a strongly light-scattering environment containing same in unknown concentration together with a reference component of kno... | 02/21/1989 |
| 4800885 | Blood constituent monitoring apparatus and methods with frequency division multiplexing Apparatus and method for measuring the level of a constituent such as oxygen in the blood of a living subject. Light at a plurality of wavelengths is emitted and directed through the patient's body to a photodetector. The amplitude of the emitted light at... | 01/31/1989 |
| 4800495 | Method and apparatus for processing signals used in oximetry The present invention relates to the processing of signals containing information about the pulse rate and oxygen saturation of arterial blood flowing in tissue. These signals have a relatively periodic pulsatile component superimposed upon a varying base... | 01/24/1989 |
| 4785814 | Optical probe for measuring pH and oxygen in blood and employing a composite membrane An optical probe is presented for use in measuring pH and oxygen content in blood in a blood vessel within a living body. An elongated flexible optical fiber means is provided which has a proximal end and a distal end. The distal end is adapted to be inse... | 11/22/1988 |
| 4781195 | Blood monitoring apparatus and methods with amplifier input dark current correction In photoelectric apparatus such as a pulse oximeter for monitoring a parameter of the blood in a living organism, a dark current correction signal is applied to the input at the preamplifier. The correction signal is substantially equal in magnitude but o... | 11/01/1988 |
| 4773097 | Image analyzing apparatus An image analyzing apparatus comprising a source of light for radiating a target object of interest, a measuring light of a first predetermined wavelength and at least one detecting light of a second predetermined wavelength different from the first prede... | 09/20/1988 |
| 4770179 | Calibrated optical oximeter probe A probe apparatus for use with an optical oximeter is disclosed. A pair of light emitting diodes emit light of known narrow wavelengths through an appendage of a patient onto a photosensor. A resistor of coded known resistance is used to enable the oximet... | 09/13/1988 |
| 4765340 | Apnea detector A medical apparatus for detecting apnea, in particular, in infants and children. The apparatus measures oxygen saturation in the blood and relates the measurement to a normal condition. The relationship is employed to indicate apnea.... | 08/23/1988 |
| 4752115 | Optical sensor for monitoring the partial pressure of oxygen A device is described for sensing oxygen, particularly for use in medical applications. The device includes an optical waveguide and an oxygen sensing medium disposed on the waveguide. The sensing medium fluoresces in response to light from a light source... | 06/21/1988 |
| 4744656 | Disposable calibration boot for optical-type cardiovascular catheter The catheter tip fits into a cavity in the boot and is held gently (in the longitudinal direction) by a detent formed within the cavity. A calibration substance faces the tip in a mechanically and optically standardized calibration relationship, to reflec... | 05/17/1988 |
