9 results about "Biomedical sensors" patented technology

The present invention provides a device (100) and method for measuring and / or monitoring auscultation and other biomedical signals of a body part of a subject, the device (100) comprising: a plurality of sonographic sensors sensitive to surface vibrations-PG sensors (110) configured to measure acoustic activity of the body part, and providing a PG signal (115) indicative of acoustic activity of the body part, the PG sensor (110) being adapted to be arranged on the body part to cover different independent auscultation areas of the body part. The device further comprises at least one other biomedical sensor-BIO sensor (120) configured to independently measure a respective activity of the body part according to the sensor type and to provide at least one BIO signal (125) indicative of the respective activity of the body part. The device further comprises a signal processing unit (160) configured to acquire a signal (115, 125) from each sensor (110, 120) and to collectively perform a signal source specific analysis by combining information of the PG signal (115) with corresponding arrangement information of the PG sensor (110) on the body part and information of the BIO signal (125).

The application provides a non-invasive implantable wall deformation volume sensor, and relates to the technical field of implantable biomedical sensors, which comprises an elastically deformable closed ring-shaped base, a conductive coil arranged on the ring-shaped base, a capacitor forming an LC resonant circuit with the conductive coil, an elastic support structure arranged in the ring-shaped base, and a biocompatible encapsulation layer covering the outside. The sensor controls the distribution ratio and mechanical rigidity of the support structure, so that the ring-shaped base produces controllable concave deformation under the action of the pressure of the inner wall of an organ, thereby changing the geometric parameters of the conductive coil and causing the resonant frequency to change, and the detection of the volume change of the organ is realized. In addition, the elastic support structure and the ring-shaped base form a connection mode allowing relative sliding, so that the sensor can automatically expand by the elastic force after compression delivery. The application can respond to the overall geometric deformation, and has the advantages of simple structure and high mechanical compliance.

An implantable biomedical sensor (1) is disclosed which is characterized by a novel electrofluidic design based on dedicated measurement chambers (2, 3) enclosed by respective membranes (4, 5) which are permeable to water molecules and optionally typical ions found in human interstitial fluid (ISF). By this concept, the sensor (1) can perform electrical measurements in the respective chambers (2, 3), collecting data that allows conclusions to be drawn about the amount of water and ions present in the ISF around the sensor (1). In other words, such a sensor (1) enables electrical monitoring of the electrolyte state and / or hydration state in the tissue of a patient wearing the implantable sensor (1).

Contemplated embodiments include a biomedical sensor system, comprising: a piezoresistive agent, and a flexible substrate, wherein the flexible substrate and the piezoresistive agent are coupled together to form the biomedical sensor system, and wherein the sensor system is removably located in or on the ceiling of a patient's mouth. Contemplated methods of determining a level of dysphagia in a patient include: providing a biomedical sensor system, wherein the system comprises: a piezoresistive agent, and a flexible substrate comprising a flexible hybrid circuit structure, wherein the flexible substrate and the piezoresistive agent are coupled together to form the biomedical sensor system; providing a patient having a mouth, a tongue, and a mouth ceiling, removably locating the sensor system in or on the ceiling of the patient's mouth.

A conductive composition includes a binding resin and a conductive polymer, wherein the conductive polymer has a quinoid structure and a benzoid structure, and wherein a ratio of a half-width value of a peak intensity corresponding to the benzoid structure to a half width of a peak intensity corresponding to the quinoid structure in Raman spectra obtained by Raman spectroscopy is 0.5 to 12.

The process of making amine magnetic nanoparticle biocomposites from rice husk fiber and sugarcane fiber can be done in one step reaction process. The addition of different concentrations of amine sources gives different results in terms of the amount of amine functionalized on the magnetic surface of the nanoparticles. Rice husk and sugarcane bagasse are activated by delignification, washing, and drying. Rice husk fiber and sugarcane bagasse fiber are used as a matrix in the magnetic nanoparticle biocomposite. The combination of the basic material forming the magnetic and rice husk fiber and sugarcane bagasse fiber is carried out in a solvothermal reactor through heating and washing. The resulting biocomposite has specific functional groups in the form of amine groups that can be applied in the fields of biomedical, sensors, and advanced materials.

The invention provides a non-invasive implantable volume sensor capable of deforming along with a wall, and relates to the technical field of implantable biomedical sensors. The conductive coil is arranged on the annular base body, the capacitor and the conductive coil form an LC resonance circuit, the elastic supporting structure is arranged in the annular base body, and the biocompatibility packaging layer covers the outer side of the annular base body. According to the sensor, by regulating and controlling the distribution proportion and the mechanical rigidity of the supporting structure, the annular base body generates controllable sunken deformation under the action of the pressure of the inner wall of the organ, so that the geometric parameters of the conductive coil are changed, the resonant frequency is changed, and the volume change of the organ is detected. In addition, the elastic supporting structure and the annular base body form a connection mode allowing relative slippage, so that the sensor can be automatically unfolded by relying on resilience force after being compressed and delivered. The device can respond to overall geometric deformation, and is simple in structure and high in mechanical compliance.

This invention discloses a method for preparing a biodegradable, self-healing, enhanced aerogel, specifically relating to the field of aerogel preparation technology, including the following steps: S1: Preparation of a composite biodegradable matrix sol: Chitosan and polylactic acid-glycolic acid copolymer are weighed according to a mass ratio, and a 1%-2% aqueous acetic acid solution is added. The mixture is magnetically stirred at 50-60℃ for 3-4 hours to form a uniform matrix sol. Subsequently, functional additives are added to the matrix sol, and stirring is continued for 1-2 hours to obtain a uniformly dispersed matrix sol. The biodegradable, self-healing, enhanced aerogel prepared by this invention has a degradation rate of ≥85% in a simulated body fluid environment after 30 days and a degradation rate of ≥92% in a natural soil environment after 90 days. The degradation products are non-toxic small molecules such as glucose and lactic acid, with no harmful residues. It exhibits good biocompatibility and environmental friendliness, and is suitable for applications such as disposable smart wearable devices and biodegradable biomedical sensors.

Techniques digitally tracking completion of user tasks based on physiological data obtained from biomedical sensors are disclosed. One or more embodiments manage a schedule of tasks for a specific user and presents the schedule to the user or to other users that have authorization to access the schedule (e.g., an authorized health care professional). In some embodiments, a system dynamically tracks the status of the tasks by obtaining physiological data from biomedical sensors of health monitoring devices. The physiological data may indicate if a particular task has been completed, as well as details related to the task. The system updates a record corresponding to the task based on the physiological data, thereby enabling the system to dynamically provide timely up-to-date tracking details regarding the schedule of tasks to the user.