86 results about "Body core temperature" patented technology

Devices and methods for non-invasively measuring at least one parameter of a sample, such as the presence of a disease condition, progression of a disease state, presence of an analyte, or concentration of an analyte, in a biological sample, such as, for example, a body part. In these devices and methods, temperature is controlled and is varied between preset boundaries. The methods and devices measure light that is reflected, scattered, absorbed, or emitted by the sample from an average sampling depth, d_av, that is confined within a region in the sample wherein temperature is controlled. According to the method of this invention, the sampling depth d_av, in human tissue is modified by changing the temperature of the tissue. The sampling depth increases as the temperature is lowered below the body core temperature and decreases when the temperature is raised within or above the body core temperature. Changing the temperature at the measurement site changes the light penetration depth in tissue and hence d_av. Change in light penetration in tissue as a function of temperature can be used to estimate the presence of a disease condition, progression of a disease state, presence of an analyte, or concentration of an analyte in a biological sample. According to the method of this invention, an optical measurement is performed on a biological sample at a first temperature. Then, when the optical measurement is repeated at a second temperature, light will penetrate into the biological sample to a depth that is different from the depth to which light penetrates at the first temperature by from about 5% to about 20%.

A combination of a patient core temperature sensor and the dual-wavelength optical sensors in an ear probe or a body surface probe improves performance and allows for accurate computation of various vital signs from the photo-plethysmographic signal, such as arterial blood oxygenation (pulse oximetry), blood pressure, and others. A core body temperature is measured by two sensors, where the first contact sensor positioned on a resilient ear plug and the second sensor is on the external portion of the probe. The ear plug changes it's geometry after being inserted into an ear canal and compress both the first temperature sensor and the optical assembly against ear canal walls. The second temperature sensor provides a reference signal to a heater that is warmed up close to the body core temperature. The heater is connected to a common heat equalizer for the temperature sensor and the pulse oximeter. Temperature of the heat equalizer enhances the tissue perfusion to improve the optical sensors response. A pilot light is conducted to the ear canal via a contact illuminator, while a light transparent ear plug conducts the reflected lights back to the light detector.

Systems and methods for accurate temperature modification of a patient, or selected regions thereof, including inducing hypothermia. The temperature modification is accomplished using an in-dwelling heat exchange catheter within which a fluid heat exchange medium circulates. A heat exchange cassette attached to the circulatory flow lines of the catheter, the heat exchange cassette being sized to engage a cavity within a control unit. A temperature measurement scheme for obtaining body core temperature is provided, including methods of obtaining and analyzing temperature data to provide feedback to the control unit for use in controlling the heating and cooling of the heat exchange medium so as to heat or cool a patient to a desired target temperature.

A temperature sensing device including at least a first contact type temperature sensing element determines body core temperature of a warm blooded animal or human based on an estimated skin temperature of the patient which is computed based on temperature measurements obtained by the first sensing element.

Apparatus for altering the body temperature of a patient comprises a cover for covering at least a portion of a patient's body and a compliant support adapted to underlie and generally conform to the shape of the portion of the patient's body to define a well adjacent to the patient's body portion for accumulating heat transfer liquid. The cover and compliant support cooperatively define an enclosure for receiving the portion of the patient's body and are constructed to conduct a heat transfer liquid into direct contact with the portion of the patient's body received in the enclosure to promote heat transfer between the patient's body and the heat transfer liquid.

An indwelling RF catheter achieves warming of patients by dielectric heating of blood or other bodily fluids. In one example, the catheter is deployed in a suitable blood vessel, such as the inferior vena cava. The catheter design includes an emitter structure electrically coupled to an RF generator, which provides a source of RF power. The emitter structure, distally located upon the catheter, administers electromagnetic radiation to the blood within the patient, thereby creating heat due to the dielectric qualities of blood. As blood heated by the indwelling RF catheter courses through the patient's body, the patient's body is systemically warmed, raising the body core temperature.

A multi lumen endotracheal tube having a balloon cuff to seal a patient's trachea during intubation. The ET tube having a main lumen for the exchange of respiratory and medicinal gases consequent to a medical procedure, a secondary lumen for inflation of the balloon cuff, and a tertiary lumen for transmission of sound waves via air medium contained therein, permitting ausculatory monitoring of a patient's breath sounds during intubation and subsequent monitoring of cardiac and respiratory activity after sealing of the ET tube. The ET tube is particularly a adapted for utilization by an anesthetist by including temperature sensor to permit remote monitoring of body core temperature and body cavity ausculation of cardiac and respiratory activity.

A measuring system and method for the contactless and continuous determination of the body core temperature of a person/subject preferably includes a matrix-like infrared sensor (3) that is directed toward the nose-side area of the canthus. The infrared sensor (3) is connected with an evaluating unit (5) for the evaluation of the infrared signals and the selection of the maximum in the matrix. The evaluating unit (5) is connected with a computing unit (6) for the calculation of the body core temperature from the maximum determined and for displaying via a display (7) and/or transmission of the measured signals and/or the calculated value for the body core temperature.

A medical, electrically powered thermal cover for fitting predominantly the trunk and head of a person experiencing or potentially experiencing traumatic or cold-exposure hypothermia. The thermal cover encases all of the torso and neck, and portions of other body areas. Heating may be distinctly non-uniform, being applied to the body surface only in special regions where the body's capacity for heat uptake may be relatively high. In sum, the system may monitor deep body core temperature, direct heat to the body core where it may be most needed, and controls therapy over time to restore normothermia.

A device for determining the body core temperature of a living being includes a first temperature sensor (15) for detecting the skin temperature T₁, an insulator (11) for receiving the first temperature sensor (15), a second temperature sensor (17) in the insulator (11) for detecting a temperature T₂ and a third temperature sensor (19), which is arranged opposite the first temperature sensor (15) at the insulator (11), for detecting a temperature T₃ near the environment. Assuming a constant ratio of lateral heat fluxes α at the insulator (11) between the temperature sensors (15, 17, 29), the body core temperature T_core is determined by the relationship described by the formula

A device for measuring the body core temperature of a person contains a structure for firmly wrapping around the upper body of the person. A double temperature sensor is connected with the structure for wrapping around the upper body such that the double temperature sensor is pressed elastically onto the upper body in the state in which it is put on in the area of the sternum. The device for measuring the body core temperature is suitable for the integration of a body core temperature measurement in clothing or chest belt systems.

A negative pressure, thermal energy device has an enclosure that receives a patient's body part. The body part is positioned in the enclosure and contacts a thermal energy contacting surface. The thermal energy contacting surface transfers its thermal energy to the body part. While in the enclosure, the body part is also exposed to a negative pressure to cause vasodilation. The combination of the vasodilation and the thermal energy transfer alter the patient's body core temperature. To ensure the body part remains in contact with the thermal contacting surface, the enclosure has a portion thereof that moves when negative pressure is in the enclosure. When the negative pressure is applied, the deforming enclosure material is pulled toward the body part to provide a positive pressure on the body part that ensures the body part effectively contacts the thermal energy contacting surface.

A passive microwave thermography apparatus uses passive microwave antennas designed for operation, for example, at WARC protected frequencies of 1.400 to 1.427 GHz and 2.690 to 2.70 GHz (for core body gradient temperature measurement) and 10.68 to 10.700 GHz or higher microwave frequency (for surface body gradient temperature measurement) and a related directional antenna or antenna array to measure microwave radiation emanating from an animal, especially, a human body. The antennae may be radially directed toward a point within or on the surface of a human body for comparison with known temperature distribution data for that point and a given ambient temperature. Each frequency band may provide a plurality of adjacent noise measuring channels for measuring microwave noise naturally emitted by the human body. The apparatus measures short-term changes in, for example, core and body surface temperatures to establish a basal metabolic rate. Changes in core body temperature may be stimulated by the administration of food or certain organic and drug-related substances or stress to induce a change in basal metabolic rate over time. These changes correlate directly with a human subject's metabolism rate at rest and under certain dietary constraints and can be used to determine courses of treatment for obesity, metabolic disease, and other disorders. The apparatus can also be used to remotely monitor patients and subjects without physical contact.

The invention provides a temperature monitoring system and monitoring method capable of realizing early warning on breast pathological changes. The monitoring system has a concrete structure comprising two cups used for accommodating breasts, wherein a temperature sensor three-dimensional array is arranged on the surface or the inside of one side, for accommodating the breast, of each cup. The temperature monitoring system is characterized by also comprising an armpit temperature monitor used for monitoring the body temperature; the output ends of the temperature sensor three-dimensional array and the armpit temperature monitor are respectively and electrically connected with a receiving end of a microprocessor positioned on the cup; the microprocessor is in wireless connection with the intelligent terminal. The monitoring system can realize the early warning on the breast local pathological changes such as breast tumor in the early stage, and can also realize the early warning on the breast integral pathological changes such as hyperplasia of mammary glands in the early stage; the wearing and the monitoring are convenient; the monitoring precision is high; the cost is low.

A method for treating conditions responsive to heat therapy and monitoring such treatments to determine efficacy. The method includes the step of diagnosing a patient to determine if heat therapy is a proper treatment. If so, then the steps of applying heat therapy and monitoring at least one parameter associated with the patient is performed. The data collected is then trended to determine the efficacy of the heat therapy. If the efficacy indicates that the therapy is beneficial, then the steps of applying therapy, monitoring the at least one parameter, and trending the data are repeated. The heat therapy is performed by a thermal pad that applies heat with a controlled temperature to a body portion of the patient. The at least one parameter is selected from the set including perfusion index, blood oxygenation, pulse rate, local skin temperature, body core temperature, heat therapy temperature, and/or ambient temperature

A method is provided for the contactless determination of the body core temperature of a person (7), wherein the surface temperature of the person (7) is detected at a measuring site (6) on the body by means of a temperature sensor unit (2) arranged at a spaced location therefrom. The sensor signal generated by the temperature sensor unit (2) is sent to an evaluating unit (3) for evaluating the sensor signal and for calculating the body core temperature, and the temperature signal generated in the evaluating unit (3) is sent to a display unit (4) for the optical display of the body core temperature determined. The temperature sensor unit (2) locally identifies a measuring area (8) on the body in a first step and the measuring area (8) on the body is resolved by the temperature sensor unit (2) in a second step such that the measuring site (6) on the body is detected and the detection is carried out by the temperature sensor unit (2) at this measuring site (6) on the body.

A chair with water basins for heat strain reduction purpose is disclosed. The chair is provided with built-in or attachable water basins at the armrest level for the user to immerse his forearms and hands in the basins while seating on the chair. Another embodiment of the chair provides foot basin module detachably coupled to the chair with or without the hand basins, thereby enabling the user to immerse his feet in the water to enjoy the cooling effect. In the event where the user is standing up, the invention also teaches a hand and/or foot pool system so that an individual user or multiple users can immerse their extremities in water to cool off the body core temperature while standing up.

In one implementation, an apparatus estimates body core temperature from an infrared measurement of an external source point using a cubic relationship between the body core temperature and the measurement of an external source point is described, estimates temperature from a digital infrared sensor and determines vital signs from a solid-state image transducer, or determines vital signs from a solid-state image transducer and estimates body core temperature from an infrared measurement of an external source point using a cubic relationship between the body core temperature and the measurement of an external source point; after which the estimated an/or determined information is transmitted to an external database.

In one implementation, an apparatus estimates body core temperature from an infrared measurement of an external source point using a cubic relationship between the body core temperature and the measurement of an external source point is described, estimates temperature from a digital infrared sensor and determines vital signs from a solid-state image transducer, or determines vital signs from a solid-state image transducer and estimates body core temperature from an infrared measurement of an external source point using a cubic relationship between the body core temperature and the measurement of an external source point; after which the estimated and/or determined information is transmitted to an external database.