Patent application number | Description | Published |
20100261995 | MEDICAL DEVICE AND TECHNIQUE FOR USING THE SAME - According to various embodiments, a tracheal tube may employ optical sensing techniques for determining a distance between the inserted tube and an anatomical structure such as a carina. The distance information may provide an indication as to whether or not the tracheal tube is properly placed within the trachea. The optical techniques may include interferometry. | 10-14-2010 |
20100261996 | MEDICAL DEVICE AND TECHNIQUE FOR USING SAME - According to various embodiments, a tracheal tube may employ optical sensing techniques for determining a distance between the inserted tube and an anatomical structure, such as a carina. The distance information may provide an indication as to whether or not the tracheal tube is properly placed within the trachea. The optical techniques may include backscattered intensity measurements. | 10-14-2010 |
20100280362 | TIME OF FLIGHT BASED TRACHEAL TUBE PLACEMENT SYSTEM AND METHOD - According to various embodiments, a tracheal tube may employ optical sensing techniques for determining a distance between the inserted tube and an anatomical structure, such as a carina. The distance information may provide an indication as to whether or not the tracheal tube is properly placed within the trachea. The optical techniques may include time of flight techniques. | 11-04-2010 |
20110023889 | ULTRASOUND-BASED TRACHEAL TUBE PLACEMENT DEVICE AND METHOD - An inflatable balloon cuff may be adapted to seal a patient's trachea when associated with an endotracheal tube. These cuffs may include features that facilitate detection or visualization of the cuff, for example with ultrasound devices, to ensure proper placement of the cuff and the tube. Such surface features may include particular types of materials or shaped or protruding features that may be detected in the environment of the trachea. | 02-03-2011 |
20120330139 | MEDICAL DEVICE AND TECHNIQUE FOR USING THE SAME - According to various embodiments, a tracheal tube may employ optical sensing techniques for determining a distance between the inserted tube and an anatomical structure, such as a carina. The distance information may provide an indication as to whether or not the tracheal tube is properly placed within the trachea. The optical techniques may include backscattered intensity measurements. | 12-27-2012 |
20130253310 | MEDICAL DEVICE AND TECHNIQUE FOR USING THE SAME - According to various embodiments, a tracheal tube may employ optical sensing techniques for determining a distance between the inserted tube and an anatomical structure such as a carina. The distance information may provide an indication as to whether or not the tracheal tube is properly placed within the trachea. The optical techniques may include interferometry. | 09-26-2013 |
20130253311 | TIME OF FLIGHT BASED TRACHEAL TUBE PLACEMENT SYSTEM AND METHOD - According to various embodiments, a tracheal tube may employ optical sensing techniques for determining a distance between the inserted tube and an anatomical structure, such as a carina. The distance information may provide an indication as to whether or not the tracheal tube is properly placed within the trachea. The optical techniques may include time of flight techniques. | 09-26-2013 |
Patent application number | Description | Published |
20100081897 | Transmission Mode Photon Density Wave System And Method - Present embodiments are directed to a monitor system, such as a pulse oximetry system. The system may include a detection feature, an emission feature capable of emitting light into tissue and arranged relative to the detection feature such that the detection feature is capable of detecting the light from the tissue after passing generally through a portion of the tissue, a modulator capable of modulating the light to generate photon density waves at a modulation frequency generally in a range of 50 MHz to 3 GHz, a detector communicatively coupled with the detection feature, wherein the detector is capable of detecting characteristics of the photon density waves comprising amplitude changes and phase shifts, and a processor capable of making determinations relating to a value of a physiologic parameter of the tissue based at least in part on the detected characteristics. | 04-01-2010 |
20110071371 | Wavelength-Division Multiplexing In A Multi-Wavelength Photon Density Wave System - Multi-wavelength photon density wave medical systems, methods, and devices are provided. In one embodiment, a multi-wavelength photon density wave patient monitor includes multiple light sources, a driving circuit, a fiber coupler, a sensor cable connector, a wavelength demultiplexer, detectors, and data processing circuitry. The driving circuit may modulate the light sources to produce several single-wavelength input photon density wave signals, which the fiber coupler may join into a multi-wavelength input signal. The sensor cable connector may provide this multi-wavelength input signal to a sensor attached to the patient and receive a multi-wavelength output signal. The wavelength demultiplexer may separate the multi-wavelength output signal into single-wavelength output signals for detection by the detectors. Based on a comparison of one of the single-wavelength output signals to a corresponding one of the single-wavelength input signals, the data processing circuitry may determine a physiological parameter of the patient. | 03-24-2011 |
20110071373 | Time-Division Multiplexing In A Multi-Wavelength Photon Density Wave System - Multi-wavelength photon density wave medical systems, methods, and devices are provided. In one embodiment, a multi-wavelength system may include a sensor, a sensor cable, and a patient monitor. The sensor may have an emitter output and a detector input configured to pass a multi-wavelength photon density wave input signal into a patient and receive a resulting multi-wavelength photon density wave output signal. The sensor cable may couple to the sensor using two optical cables for transmitting and receiving the multi-wavelength photon density wave signals. The patient monitor may couple to the sensor cable and generate several time-division multiplexed single-wavelength input signals by modulating one or more light sources at a frequency sufficient to produce resolvable photon density waves. By combining the several time-division multiplexed single-wavelength input signals into one of the optical cables of the sensor cable, the patient monitor may generate the multi-wavelength photon density wave input signal. | 03-24-2011 |
20110083509 | Photoacoustic Spectroscopy With Focused Light - Photoacoustic measurements utilize emitted light to generate an acoustic response in tissue, with the acoustic response being proportional to the presence of an absorber of the light in the tissue. The present disclosure relates the use of focused light to acquire photoacoustic measurements. In one embodiment, the light is modulated, such as spatially modulated, such that the light may be focused within an otherwise scattering medium, such as tissue. | 04-14-2011 |
20110245636 | Multi-Wavelength Photon Density Wave System Using An Optical Switch - Multi-wavelength photon density wave (PDW) medical systems, methods, and devices are provided. In one embodiment, a multi-wavelength system may include a sensor, a sensor cable, and a patient monitor. The sensor may have an emitter and a detector configured to pass a multi-wavelength PDW input signal into a patient and receive a resulting multi-wavelength PDW output signal. The sensor cable may couple to the sensor and include two optical cables for transmitting and receiving the multi-wavelength PDW signals. The patient monitor may couple to the sensor cable and generate several single-wavelength PDW input signals by modulating a plurality of light sources. The monitor may include an optical switch configured to time-division multiplex the several single-wavelength PDW wave input signals by selecting one of the single-wavelength PDW signals at one time to produce a multi-wavelength PDW signal which is output from the monitor to the sensor via the sensor cable. | 10-06-2011 |
20120029829 | Light Focusing Continuous Wave Photoacoustic Spectroscopy And Its Applications To Patient Monitoring - The present disclosure describes systems and methods that use spatial modulation to focus continuous wave light into a localized region of interest such as an individual blood vessel. In certain embodiments, intensity modulation techniques, such as linear frequency modulation, are used in conjunction with spatial modulation to achieve more precise measurements through otherwise scattering medium. The focused beam of continuous wave light is capable of penetrating several centimeters of tissue to deliver measurements and images associated with individual blood vessels and other discrete vascular components. | 02-02-2012 |
20120113411 | OPTICAL FIBER SENSORS - The present disclosure describes the use and the manufacture of a fiber optic sensor having an angled terminal portion of a fiber optic element. In one embodiment, an optical fiber is cut at an angle and a portion of the fiber's jacket is removed near the angle so that the cladding is exposed. Light may then travel through the fiber, reflect off the angled portion, and emit through the exposed cladding into a patient. Light may also be collected from the patient using the same or a different fiber optic element having an angled terminal portion. In one embodiment, the emitted light can then be collected and analyzed to derive various physiological parameters. In certain embodiments, the fiber optic sensor may be used in environments where metallic and/or electronic sensors are not suitable. | 05-10-2012 |
20120197133 | Advanced Ultrasound Modulated Optical Spectroscopy And Its Application To Patient Monitoring - The present disclosure describes systems and methods that use spatial modulation to focus light into a localized region of interest such as an individual blood vessel. In certain embodiments, acoustic modulation techniques, such as ultrasound pulse modulation, are used in conjunction with spatial modulation to achieve more precise measurements through otherwise scattering medium. The focused beam of light is capable of penetrating several centimeters of tissue to deliver measurements and images associated with individual blood vessels and other discrete vascular components. | 08-02-2012 |
20120248985 | MEDICAL SENSOR WITH TEMPERATURE CONTROL - Embodiments of the present disclosure relate to techniques for controlling the temperature of light sources within physiological sensors in order to regulate the wavelengths emitted by the light sources. The sensors may include a temperature control element that is designed to provide heating and/or cooling to the light sources. The sensors also may include a temperature sensor designed to detect the temperature of the light sources. Based on the detected temperature, a controller can vary the amount of heating and/or cooling provided by the temperature control element to maintain the temperature of the light sources at a desired temperature or within a desired temperature range. | 10-04-2012 |
20120310058 | PHOTON DENSITY WAVE BASED DETERMINATION OF PHYSIOLOGICAL BLOOD PARAMETERS - A system for measuring a physiological parameter of blood in a patient is presented. The system includes a transmission module configured to emit a plurality of photon density waves into tissue of the patient from a plurality of modulated light sources. The system also includes a receiver module configured to detect characteristics of the plurality of photon density waves. The system also includes a processing module configured to identify characteristics of a pulsatile perturbation of the tissue based on the characteristics of the plurality of photon density waves, and identify a value of the physiological parameter based on at least the characteristics of the pulsatile perturbation of the tissue and the characteristics of the plurality of photon density waves. | 12-06-2012 |
20120310060 | METHOD OF ANALYZING PHOTON DENSITY WAVES IN A MEDICAL MONITOR - A monitoring system may include an emission feature capable of emitting light into tissue, a modulator capable of modulating the emitter at a modulation frequency, e.g., in a range of about 10 MHz to 3.0 GHz, to generate resolvable photon density waves, a detection feature capable of detecting photons of the photon density waves after passage through the tissue, and a processor capable of using phase and amplitude differences of the photon density wave signal relative to a reference to determine one or more physiological parameters. The phase and amplitude differences may be much lower frequency that the modulation rate. Accordingly, these differences may be masked by signal artifacts. Provided herein are signal conditioning techniques that may improve the signal to noise ratio of photon density wave signals and yield a more robust phase and amplitude signal. | 12-06-2012 |
20130030267 | MULTI-PURPOSE SENSOR SYSTEM - Embodiments of the present disclosure relate to multi-purpose sensors for monitoring a plurality of physiological parameters. According to certain embodiments, the multi-purpose sensors may include optical elements for determining oxygen saturation and regional saturation. In additional embodiments, such sensor may include multiple electrodes that are configured for bispectral index monitoring. In particular embodiments, portions of the multi-purpose sensors may be removed and discarded when no longer needed. | 01-31-2013 |
20130104288 | HEADBAND FOR USE WITH MEDICAL SENSOR | 05-02-2013 |
20130158372 | MEDICAL SENSOR FOR USE WITH HEADBAND - Medical sensors configured to provide enhanced patient comfort when worn over a period of time are provided. The medical sensors may include a first padding layer and a second padding layer disposed on either side of an emitter and a detector for measuring a physiological parameter of a patient. The medical sensors may also include an island padding layer secured to a patient-facing side of the second padding layer for reducing localized pressure points that may be caused by protrusions of the sensor. Additionally or alternatively, certain edges of the sensors may be rounded and/or stepped to reduce marking on the patient's tissue and to reduce strain and shear forces produced on the patient's tissue. Still further, certain embodiments provide enhanced light transmission between the emitter and detector of the sensors. | 06-20-2013 |
20130225952 | SYSTEM AND METHOD FOR STORING AND PROVIDING PATIENT-RELATED DATA - According to various embodiments, a regional oximetry sensor may include a light emitting element configured to emit light, a light detector configured to receive the light, and a memory device configured to store a baseline. The baseline stored by the memory device enables a regional oximetry monitor to display the baseline on a display of the regional oximetry monitor. | 08-29-2013 |
20130267839 | ULTRASOUND-BASED TRACHEAL TUBE PLACEMENT DEVICE AND METHOD - An inflatable balloon cuff may be adapted to seal a patient's trachea when associated with an endotracheal tube. These cuffs may include features that facilitate detection or visualization of the cuff, for example with ultrasound devices, to ensure proper placement of the cuff and the tube. Such surface features may include particular types of materials or shaped or protruding features that may be detected in the environment of the trachea. | 10-10-2013 |
20130274727 | SURGICAL SYSTEM AND METHOD OF USE OF THE SAME - A surgical system configured for treating tissue is provided. The surgical system includes a laser source and a laser scalpel. The laser scalpel is adapted to couple to the laser source and is operable in two modes of operation, a first mode of operation to analyze tissue of interest and a second mode of operation to treat tissue of interest. The laser scalpel includes a housing having first and second fiber optic cables extending therethrough. Each of the first and second fiber optic cables operable under the first mode of operation to collect information pertaining to at least one optical property of tissue of interest and at least one of the first and second fiber optic cables also operable under the second mode of operation to treat the tissue of interest. | 10-17-2013 |
20140199893 | MEDICAL DEVICE WITH ELECTRICALLY ISOLATED COMMUNICATION INTERFACE - The present disclosure relates generally to medical devices and, more particularly, to medical devices with electrical connectors. In one embodiment, a medical device may include a medical connector having one or more contacts configured to enable communication between the medical device and a medical monitor according to a Universal Serial Bus (USB) standard. The medical connector may also include an interface region disposed at least partially about the one or more contacts. The interface region may be configured to physically couple to a mating connector of the medical monitor. Additionally, the interface region may include a geometry or a dimension that does not comply with the USB standard. | 07-17-2014 |
20140275883 | WIRELESS SENSORS - Embodiments of the present disclosure relate to medical systems having a wireless medical sensor with a disposable portion and a reusable portion. According to certain embodiments, the disposable portion may include an emitter configured to emit one or more wavelengths of light. The reusable portion may include a power source, such as a battery, for providing power to the emitter and other various components of the sensor. In certain embodiments, the reusable portion may also include a wireless module for communicating with a patient monitor. | 09-18-2014 |
20140275884 | REUSABLE WIRELESS MEDICAL SENSORS - Embodiments of the present disclosure relate to reusable wireless sensors. According to certain embodiments, the wireless sensor may include a rechargeable battery coupled to an induction coil for recharging the battery. One or more magnets may be disposed within or coupled to the wireless sensor, and the one or more magnets may be arranged to align the induction coil of the wireless sensor with a recharging device to facilitate recharging the battery of the wireless sensor. | 09-18-2014 |
20150018649 | METHODS AND SYSTEMS FOR USING A DIFFERENTIAL LIGHT DRIVE IN A PHYSIOLOGICAL MONITOR - A physiological monitoring system may use a differential light drive to illuminate one or more light sources. A differential light drive may include applying two signals, one to each terminal of a light emitting diode or other light source, such that the illumination of the light source is controlled by the difference between the two light drive signals. In some embodiments, light emitting diodes may be turned on and off using a differential light drive without using switches and using only unipolar voltage sources. In some embodiments, light drive signals may be 180 degrees out-of-phase, and the phase shift may be used to reduce crosstalk and other electronic noise, for example by carrying the signals in a twisted pair of conductors. | 01-15-2015 |