Abstract: A multisystem sensor is disclosed that includes a first sensor subsystem and a second sensor subsystem. The multisystem sensor includes a sensor body having both sensor subsystems. The first sensor subsystem may monitor a first physiological characteristic and the second sensor subsystem may monitor a second physiological characteristic. The sensor body may include an isolating portion configured to isolate the first sensor subsystem and the second sensor subsystem. The sensor body and/or isolating portion may include refractive components and/or filters to prevent interference between sensor subsystems.

Abstract: According to various embodiments, a medical sensor assembly may include compressible light barriers configured to prevent undesired light from being detected. The compressible light barriers may protrude from the surface of the sensor. However, when applied to the tissue, the compressible light barriers may be compressed to the point of being substantially flush with the tissue.

Abstract: A bone oximeter probe includes an elongated member and a sensor head at an end of the elongated member to make measurements for a bone. The measurements can indicate the viability or nonviability of the bone. In an implementation, the probe is advanced through an incision in soft tissue, towards the underlying bone, and positioned so that the sensor head faces the bone to be measured. Optical signals are sent from the sensor head and into the bone. The bone reflects some of the optical signals which are then detected so that measurements for the bone can be made. Some of these measurements include an oxygen saturation level value, and a total hemoglobin concentration value of the bone.

Abstract: A sensor holder to be applied on an appendage of a subject is disclosed herein. The sensor holder includes a substrate with at least a first location for a first sensor component, the substrate surrounding a hollow for receiving the appendage along a longitudinal axis of the hollow. The substrate is gradually thickening when drawing away at least a predetermined distance from the at least first location for the first sensor component along a perpendicular direction of the substrate in relation to the longitudinal axis of the hollow.

Abstract: A pulse oximetry sensor includes reusable and disposable elements. To assemble the sensor, members of the reusable element are mated with assembly mechanisms of the disposable element. The assembled sensor provides independent movement between the reusable and disposable elements.

Abstract: According to various embodiments, a hat-based or headband sensor assembly may include thin or flexible optical sensing components, such as optical fibers or ultra thin emitters or detectors. In embodiments, the sensor assembly may be a hat-based sensor that includes a gripping region, for example on the inside of the hat band, to help secure the hat to a patient's head.

Abstract: The present disclosure relates to sensors for use on a patient's ear. The sensors as provided may be Y-shaped and configured to be retained on an ear with the forks of the Y-shape positioned below the main branch of the Y. In particular embodiments, the Y-shaped sensors may be affixed to the patient at locations on the head or neck to relieve strain and reduce the effects of motion on the optical components of the sensor.

Abstract: A biological information detector includes a light-emitting part subjected to emit a first light directed at a detection site of a test subject and a second light directed in a direction other than a direction of the detection site, a first reflecting part subjected to reflect the second light and directing the second light towards the detection site, a light-receiving part subjected to receive light having biological information, where the light produced by the first light and the second light is reflected at the detection site, and a second reflecting part subjected to reflect the light having biological information from the detection site and directing the light having biological information towards the light-receiving part.

Abstract: The present invention relates to optimized gas supply utilizing photoplethysmography. Flow rate, pressure or amount of gas adjusted as a function of blood oxygen saturation data, photoplethysmography signals, or both, obtained from the pulse oximeter probe.

Abstract: Embodiments described herein may include systems and methods for monitoring physiological parameters of a patient. Specifically, embodiments disclose the use of a generally self-contained pulse oximeter that is small and lightweight, such that it may be comfortably affixed to a patient to provide physiological data pertaining to the patient. Embodiments also provide methods of using and manufacturing a pulse oximetry patch.

Abstract: An apparatus includes a source and a detector. The source is operable to transmit light. The detector is operable to receive at least a portion of the light transmitted by the source. The source and the detector can be positioned on a nail of a digit such that the light enters the nail through an entrance region. The light further exits the nail through an exit region. The entrance region is defined by a lateral portion of the nail. The light is directed to interact with at least one analyte.

Abstract: Present embodiments include a remanufactured bandage-type medical sensor having an optical assembly with an emitter adapted to transmit one or more wavelengths of light and a photodetector adapted to receive the one or more wavelengths of light transmitted by the emitter. The sensor also includes a laminate assembly having an electrically conductive adhesive transfer tape (ECATT) layer disposed over the photodetector, and the ECATT layer is adapted to shield the photodetector from electromagnetic interference (EMI). A nonconductive layer supports the emitter, the photodetector, and the ECATT layer within the sensor. At least a portion of the optical assembly is from a used bandage-type medical sensor, and at least a portion of the laminate assembly is new.

Abstract: An optical sensor, having a cover layer, an emitter disposed on a first side the cover, a detector disposed on the first side of said cover, and a plurality of stacked independent adhesive layers disposed on the same first side ate cover, wherein the top most exposed adhesive layer is attached to a patient's skin. Thus, when the sensor is removed to perform a site check of the tissue location, one of the adhesive layers may also be removed and discarded, exposing a fresh adhesive surface below for re-attachment to a patient's skin. The independent pieces of the adhesive layers can he serially used to extend the useful life of the product.

Abstract: An embodiment of the present disclosure provides a noninvasive optical sensor or probe including disposable and reusable components. The assembly of the disposable and reusable components is straightforward, along with the disassembly thereof. During application to a measurement site, the assembled sensor is advantageously secured together while the componentry is advantageously properly positioned.

Abstract: The invention comprises method and apparatus for fluid delivery between a sample probe and a sample. The fluid delivery system includes: a fluid reservoir, a delivery channel, a manifold or plenum, a channel or moat, a groove, and/or a dendritic pathway to deliver a thin and distributed layer of a fluid to a sample probe head and/or to a sample site. The fluid delivery system reduces sampling errors due to mechanical tissue distortion, specular reflectance, probe placement, and/or mechanically induced sample site stress/strain associated with optical sampling of the sample.

Abstract: Aspects of the present disclosure include a sensor emitter including a reflective cavity for re-directing light to a tissue site. By reflecting light towards the tissue site, the amount of light reaching the tissue site is increased. The increased light can improve parameter measurements taken by a non-invasive physiological sensor by producing a stronger and/or cleaner signal. In an embodiment, the reflective cavity is formed on one or more lead frames of the sensor emitter, wherein the lead frames are capable of transmitting electrical signals to emitting elements coupled to the lead frames. Aspects of the present disclosure also include a sensor component configured to protect connection points of wires to conductive leads on the sensor components by inhibiting flex or bending at the connection points. Connection points can protrude along edges of the sensor component. Aspects of the present disclosure also include techniques and processes for producing low-profile sensors.

Abstract: A disposable portion of an optical probe is usable to determine at least one physiological parameter. The disposable portion comprises a bandage including adhesive on at least a portion of at least one face thereof. The bandage comprises a first receptacle at a first position. The first receptacle is configured to receive and removably engage a probe emitter. The bandage comprises a second receptacle at a second position. The second position is spaced from the first position. The second receptacle is configured to receive and removably engage a probe detector. The first receptacle at the first position is positioned generally opposite the second receptacle at the second position when the bandage is positioned on an appendage of a patient for sensing a physiological parameter of the patient.

Abstract: A device includes a clamp and a sensor. The sensor can be attached to the clamp and tissue by the force exerted by the clamp. The clamp includes a first jaw member having a jaw face and a second jaw member having a complementary face. The first and second jaw members are held in alignment by a joint. The joint has an elastic member configured to exert a compressive force. The joint allows movement of the jaw face relative to the complementary face in directions corresponding to pitch, roll, yaw, and heave. The compressive force is distributed over a surface of the jaw face. The sensor is coupled to the jaw face or held in place by the compressive force of the jaw face. The sensor is configured to generate a sensor signal corresponding to a physiological parameter of tissue proximate the jaw face.

Abstract: Embodiments of the present disclosure relate to sensors for applying pressure to a patient's tissue. According to certain embodiments, the sensors may include one or more deformable elements that hold the optical components of the sensor against the tissue with an appropriate amount of pressure. In additional embodiments, such sensors may include a rigid one-piece sensor body that incorporates a deformable element to facilitate fine-fitting of the sensor against the tissue.

Abstract: A pulse oximeter includes a housing defined by at least a first housing portion and a second housing portion wherein the second portion includes a passage. A sensor module disposed in the housing and proximate the passage includes at least one light emitting diode and at least one photodetector. A processing module also disposed in the housing and configured to communicate with the sensor module includes at least a processor, a network interface, and a power supply. The pulse oximeter further includes a pad having at least a bottom surface and a pad passage, as well as an adhesive configured to be disposed on at least a portion of the bottom surface of the pad. The housing is configured to releasably engage the pad wherein the housing passage and the pad passage are substantially aligned with one another.

Abstract: A noninvasive photoplethysmographic sensor platform for mobile animals such as small rodents, namely rats and mice is useful such as in a laboratory research environment. The noninvasive photoplethysmographic sensor platform may be a collar which provides an easily affixed, adjustable attachment mechanism that encircles the animal, such as the neck. The neck of the animal provides several particular advantages as a sensor mounting platform for photoplethysmographic sensors. For pulse oximetry, the neck location will provide significant blood flow under all conditions. For small mammals, such as rats and mice, transmittance pulse oximetry through the neck of the subject remains possible. The neck mounted collar also offers inherent bite resistance to the sensor platform.

Abstract: An embodiment of the present disclosure provides a noninvasive optical sensor or probe including disposable and reusable components. The assembly of the disposable and reusable components is straightforward, along with the disassembly thereof. During application to a measurement site, the assembled sensor is advantageously secured together while the componentry is advantageously properly positioned.

Abstract: A pulse oximetry sensor comprises emitters configured to transmit light having a plurality of wavelengths into a fleshy medium. A detector is responsive to the emitted light after absorption by constituents of pulsatile blood flowing within the medium so as to generate intensity signals. A sensor head has a light absorbing surface adapted to be disposed proximate the medium. The emitters and the detector are disposed proximate the sensor head. A detector window is defined by the sensor head and configured so as to limit the field-of-view of the detector.

Abstract: An optical probe, which is particularly suited to reduce noise in measurements taken on an easily compressible material, such as a finger, a toe, a forehead, an earlobe, or a lip, measures characteristics of the material. A neonatal and adult disposable embodiment of the probe include adhesive coated surfaces to securely affix the probe onto the patient. In addition, the surface of the probe is specially constructed to reduce the effect of ambient noise.

Abstract: A device for measuring concentration of a constituent in blood includes: an irradiation unit for irradiating light toward a living body, the light having a wavelength disposed in a light absorption band of the constituent in the blood; a light receiving unit for receiving light, which is reflected in the living body or transmitted through the living body; and a concentration measurement unit for measuring the concentration of the constituent in the blood based on variation of light intensity of light received by the light receiving unit, the variation attributed to a pulse wave of the living body.

Abstract: A sensor may be adapted to reduce signal artifacts by deflecting the effects of outside forces and sensor motion. A sensor is provided with a rigid annular structure adapted to reduce the effect of motion of a sensor emitter and/or detector. Further, a method of deflecting or minimizing outside forces and sensor motion is also provided.

Abstract: A method and system for regulating contact pressure of a sensor is provided. In accordance with an embodiment, a sensor includes a collapsible material capable of regulating the localized component contact pressure exerted on a tissue between a threshold which ensures proper contact between the sensing component and monitoring site but which minimizes incidents of excessive localized pressures which could result in tissue damage over prolonged use. This localized contact pressure range is maintained over a wide range of sensor application pressures. In one embodiment, a window is provided in the sensor and a colorimetric indication of the compression or expansion of the collapsible material may be determined through the window.

Abstract: The invention relates to an application device for a sensor head, which can be used for example as a component of a measuring arrangement for obtaining measurement signals from living tissue in order to determine the presence, concentration, or material composition of bodily fluids and substances possibly only temporarily vessel-bound. The aim of the invention is to create solutions by means of which it is possible to take non-invasive measurements, in particular spectrometric measurements, in a manner that is advantageous in terms of measurement and ergonomics, in the region of the fingers of a user, in particular a patient.

Abstract: A medical sensor may be adapted to account for factors that cause irregularities in pulse oximetry measurements or other spectrophotemetric measurements. Sensors are provided with surface features that reduce the amount of outside light or shunted light that impinge the detecting elements of the sensor. The sensor is adapted to reduce the effect of outside light or shunted light on pulse oximetry measurements.

Abstract: An embodiment of the present disclosure provides a noninvasive optical sensor or probe including disposable and reusable components. The assembly of the disposable and reusable components is straightforward, along with the disassembly thereof. During application to a measurement site, the assembled sensor is advantageously secured together while the componentry is advantageously properly positioned.

Abstract: According to various embodiments, a medical sensor assembly may include compressible light barriers configured to prevent undesired light from being detected. The compressible light barriers may protrude from the surface of the sensor. However, when applied to the tissue, the compressible light barriers may be compressed to the point of being substantially flush with the tissue.

Abstract: An ear sensor provides a sensor body having a base, legs extending from the base and an optical housing disposed at ends of the legs opposite the base. An optical assembly is disposed in the housing. The sensor body is flexed so as to position the housing over a concha site. The sensor body is unflexed so as to attach the housing to the concha site and position the optical assembly to illuminate the concha site. The optical assembly is configured to transmit optical radiation into concha site tissue and receive the optical radiation after attenuation by pulsatile blood flow within the tissue.

Abstract: The invention discloses a finger type pulse and blood oxygen measuring device, including an upper shell suite and a lower shell suite that are installed with silica gel soft finger pad, and a semi-closed holding. A removable power supply module is installed in the lower shell suite. The beneficial effect of the invention is that because of the adoption of the removable type power supply module which is able to load the battery, it is easier to assemble and disassemble the battery. Additionally, the structure of the device facilitates manufacturing, enhances quality, and also increases the comfort of a person using the device.

Abstract: An emitter device may include at least two emitters, such as LEDs. The coaxially disposed emitters may emit light in substantially the same area so that no apparent distance is perceived between individual emitters, as in emitter devices in which the emitters are disposed adjacent one another. The coaxially disposed emitters may include emitters suitable for pulse oximetry and/or water fraction measurements, for example.

Abstract: The present disclosure relates to sensors for use on a patient's ear. The sensors as provided may be disposable and configured to be retained on an ear with a biasing mechanism. In particular embodiments, the biasing mechanism is a sliding clip that is configured to bias a first portion and a second portion of a sensor body towards one another.

Abstract: A sensor may be adapted to reduce signal artifacts by deflecting the effects of outside forces and sensor motion. A sensor is provided with a rigid annular structure adapted to reduce the effect of motion of a sensor emitter and/or detector. Further, a method of deflecting or minimizing outside forces and sensor motion is also provided.

Abstract: Method and apparatus for mounting a data transmission device in a communication system including and adhesive pad with pull tab and raised border portions is provided. The adhesive pad may also include a flexible band to fit around the patient's arm to firmly secure the adhesive pad onto the patient's skin. The flexible band is size adjustable. The pull tab and raised borders on the adhesive pad permit easy single handed application and removal process of the adhesive pad by the patient.

Abstract: A physiological sensor having reduced sensitivity to interference includes a light source, a light detector in optical communication with the light source, and a sensor pad at least partially housing the light source and the light detector. The sensor pad is configured to be capacitively isolated from a patient. Moreover, the physiological sensor may be electrically connected to an amplifier having a signal ground and a monitor.

Abstract: An embodiment of the present disclosure provides a noninvasive optical sensor or probe including disposable and reusable components. The assembly of the disposable and reusable components is straightforward, along with the disassembly thereof. During application to a measurement site, the assembled sensor is advantageously secured together while the componentry is advantageously properly positioned.

Abstract: A physiological sensor assembly includes a physiological sensor having at least one light source and at least one optical receiver. A substantially transparent barrier layer is disposed between the physiological sensor and the patient's skin such that the barrier layer is removably adhered to the physiological sensor and removably adhered to the patient's skin.

Abstract: A sensor holder for a medical sensor. The sensor holder includes a housing surrounding a hollow for a subject appendage, the housing having a first channel for a gas volume following the hollow, a first aperture, a second aperture and a third aperture for a ventilation of the gas volume of the first channel.

Abstract: The present disclosure relates to sensors for use on a patient's ear. The sensors as provided may include a moldable member, such as a putty. The moldable member may be molded in place to affix the optical components of the sensor to a patient's ear tissue. For example, the moldable member may be sculpted around a curvature of a patient's earlobe. In particular embodiments, the moldable member may be activated, e.g., hardened, by exposure to particular temperatures or by exposure to light.

Abstract: A tissue oximeter sensor includes a substrate with a non-zero finite depth and first and second major sides. At least a first material free region extends along the depth from one of the sides to the other of the two sides forming a first well in the substrate. One of the sides of the substrate is configured to be removeably affixed to a human or animal subject. The sensor also includes a first channel with first and second end portions. One of the end portions of the first channel is selectively positioned in the first well along the depth alternatively at one of a plurality of different depth positions. The first channel routes radiation at least one of from the first end portion to the second end portion or from the second end portion to the first end portion.

Abstract: A medical sensor may be adapted to prevent unwanted light and electrical interference from corrupting physiological measurements. Sensors are provided with features that reduce the amount of outside light or shunted light that impinge the detecting elements of the sensor. The sensor is adapted to reduce crosstalk between electrical signals, increasing the accuracy of measurements. The sensor is also adapted to reduce the effect of outside light or shunted light on pulse oximetry measurements.

Abstract: According to various embodiments, a medical sensor assembly may include an optical coupling material configured to prevent undesired light from being detected and to enhance the amount of light received at the detector. The optical coupling material may be a gel, liquid, oil, or other non-solid material with appropriate optical properties.

Abstract: According to various embodiments, a medical sensor assembly may include compressible light barriers configured to prevent undesired light from being detected. The compressible light barriers may protrude from the surface of the sensor. However, when applied to the tissue, the compressible light barriers may be compressed to the point of being substantially flush with the tissue.

Abstract: A method and system for attaching medical devices to a patient are provided. In accordance with an embodiment, a medical device is formed with or is coupled to an attachment structure including a plurality of electrodes capable of generating differential voltages at adjacent electrodes, to thereby provide electrostatic adhesion with the tissue of a patient. In an embodiment, the attachment structure includes an insulative material between the respective electrodes of the plurality of electrodes.

Abstract: Sampling is controlled in order to enhance analyte concentration estimation derived from noninvasive sampling. More particularly, sampling is controlled using controlled fluid delivery to a region between a tip of a sample probe and a tissue measurement site. The controlled fluid delivery enhances coverage of a skin sample site with the thin layer of fluid. Delivery of contact fluid is controlled in terms of spatial delivery, volume, thickness, distribution, temperature, and/or pressure.

Abstract: A subcutaneous access device of the invention comprises: a multi-layered structure capable of use in a medical imaging procedure; a light source for transillumination of a body portion of interest of a patient's body; and an attachment portion for attaching the device to the patient's body in a manner such that the body portion of interest is outwardly exposed on a side of the patient's body opposite the light source. The device facilitates hands-free transillumination of the body portion of interest. Kits for subcutaneous access comprise the subcutaneous access device and a light detector for detecting light emitted from the subcutaneous access device.

Abstract: A system and method of standardizing modular probe housings so that the standardized probe housings may be incorporated into probes adapted to work with at least one of a multiplicity of manufacturers' oximeters. The probe housings are adapted to matingly engage at least a disposable bandage apparatus and a reusable finger attachment device. A sensor system for sensing a physiological parameter of a patient. A reusable probe sensor comprises a first housing element and a second housing element. The first housing element comprises at least one light emitter and the second housing element comprises at least one light detector. The first and second housing elements are movably coupled and configured to receive a disposable sensor shield. A disposable sensor shield comprises a first liner portion having a first aperture and a second liner portion having a second aperture. The first and second liner portions are configured to receive an appendage.