768results about "Endoradiosondes" patented technology

Devices are provided with an internal dimension that can be reduced and increased in vivo. In one example, an interatrial shunt for placement at an atrial septum of a patient's heart includes a body. The body includes first and second regions coupled in fluid communication by a neck region. The body includes a shape-memory material. The body defines a passageway through the neck region for blood to flow between a first atrium and a second atrium. The first and second regions are superelastic at body temperature, and the neck region is malleable at body temperature. A flow area of the passageway through the neck region may be adjusted in vivo.

Coaptation assist device for repairing cardiac valves and associated systems and methods are disclosed herein. A coaptation assist device configured in accordance with embodiments of the present technology can include, for example, a fixation member configured to press against cardiac tissue proximate to a native valve annulus, and a stationary coaptation structure extending away from the fixation member. The coaptation structure can include an anterior surface configured to coapt with a first native leaflet during systole and a posterior surface configured to displace at least a portion of a second native leaflet. The device also includes at least one sensor configured to detect parameters associated with at least one of cardiac function and device functionality. The sensors can be pressure sensors configured to detect left atrial pressure and / or left ventricular pressure.

The present disclosure generally relates to a monitoring device (100) for remotely monitoring health of a young livestock animal (10), the device (100) comprising: an elongated body (110) within predefined dimensional limits; and a set of electronic components housed within the elongated body (110), the electronic components comprising: a temperature sensor for measuring body temperature of the young livestock animal (10); a computer processor for processing the measured temperature into temperature data; and a wireless communications component for transmitting the temperature data to a remote computer device (210) for processing to monitor the health of the young livestock animal (10), wherein the predefined dimensional limits of the elongated body (110) enable the monitoring device (100) to be orally administrable into the young livestock animal (10) and to remain inside its stomach (12) without being excreted.

Devices are provided with an internal dimension that can be reduced and increased in vivo. In one example, an interatrial shunt for placement at an atrial septum of a patient's heart includes a body. The body includes first and second regions coupled in fluid communication by a neck region. The body includes a shape-memory material. The body defines a passageway through the neck region for blood to flow between a first atrium and a second atrium. The first and second regions are superelastic at body temperature, and the neck region is malleable at body temperature. A flow area of the passageway through the neck region may be adjusted in vivo.

Disclosed are devices, systems, and methods for in vivo monitoring of internal mechanical stress associated with physiological phenomena of an internal body structure, such as the heart, lungs and / or gastrointestinal tract, from within the host. The disclosed devices, systems, and methods include an in vivo mechanical stress sensor implantable in the host's body.

Devices, systems, and methods for vascular sensing are disclosed herein. According to some embodiments, the present technology includes a method of sensing a physiological parameter. The method can include placing a device comprising an anchor and a sensor carried by the anchor in a first vascular lumen. The method further includes determining a parameter in a second vascular lumen adjacent the first vascular lumen using the sensor.

The technology disclosed in this patent document can be used to construct devices with opto-electronic circuitry for sensing and identification applications, to provide untethered devices for deployment in living objects and other applications, and to provide fabrication techniques for making such devices for commercial production. As illustrated by specific examples disclosed herein, the disclosed technology can be implemented to provide fabrication methods, substrates, and devices that enable wireless, inorganic cell-scaled sensor and identification systems that are optically-powered and optically-readout.

Methods for treating functional anorectal disorders using biofeedback therapy. The method includes using devices and systems to obtain biofeedback data from a user, and further includes using a computer or processor to analyze the biofeedback data and generate and display a visual representation of that biofeedback data to a user.

Featured are urodynamic catheters, intravaginal devices, and intrarectal devices, systems and kits thereof, and methods of using the devices, systems, and kits to observe pelvic floor movements in order to monitor bladder function in order to diagnose, treat, or prevent urinary incontinence disorders, such as urge incontinence and stress incontinence.

An implantable system for monitoring a vascular structure can include a sensor configured to be positioned within the vascular structure and further configured to detect a property of a flow of blood in the vascular structure, a communication circuitry configured to be positioned within the vascular structure, the communication circuitry connected to the sensor and configured to transmit data related to the property of the flow of blood detected by the electronic sensor, and an antenna configured to be positioned within the vascular structure, the antenna connected to the communication circuitry and further configured to facilitate transmission of the data related to the property of the flow of blood detected by the sensor.

Disclosed are devices, systems and methods for in vivo monitoring of localized environment conditions within a patient user by measuring analytes, including glucose, oxygen, and / or other analytes. In some aspects, a sensor device includes a wafer-based substrate, at least one electrochemical sensor two-electrode contingent including a working electrode and a reference electrode on the substrate and configured to detect a target analyte in a body fluid when the sensor device is deployed within a subject's body, where the working electrode is functionalized by a chemical layer configured to facilitate a reaction involving the target analyte that produces an electrical signal; and an electronics unit in communication with the electrochemical sensor electrode contingent to transmit the electrical signal to an external processor.

A load sensing assembly for a medical implant is disclosed. The medical implant may include an upper surface, a side surface, a bottom surface, and a cavity housing various sensors and microelectronics. In other embodiments, the medical implant may include a port that is accessible through at least one of the bottom surface, side surface, and the upper surface. The port may be configured to receive an electronics assembly, package, or hermetically sealed enclosure. The electronics package may have a size and shape generally corresponding to the port. In various embodiments, electronic components and sensors may be powered by a local power source. In various embodiments, sensors may be chosen from: accelerometers, gyroscope, strain gauge, pressure sensor, pH sensor, impedance sensor, optical sensor, and / or a temperature sensor. In various embodiments, the medical implant may be chosen from: an interbody spinal implant, a pedicle screw, a connector, and / or a cross-link.

Embodiments include a method of diagnosing gastroparesis or suspected gastroparesis, the method comprising: obtaining data representing a time series of readings from gas sensing apparatus housed within a ingestible capsule device orally ingested by a subjected; processing the readings to detect one or more gastroparesis indicator spikes in the CO2 concentration with respect to time; based on the detected one or more gastroparesis indicator spikes in the CO2 concentration with respect to time, diagnosing gastroparesis or suspected gastroparesis.

Devices and methods for treating obesity are provided. More particularly, intragastric devices and methods of tracking and locating the same are provided.

A catheter system includes an elongated tube structure configured for insertion into a luminal space, such as the vasculature, of a body. The catheter is conductive and configured to conduct electrical signals. The catheter includes one or more power and data coupling devices configured to send and receive power and / or data signals, such as from an underlying guidewire disposed within a lumen of the catheter. One or more sensors are coupled to a distal section of the catheter and are electrically connected to the one or more power and data coupling devices.

A sensor (e.g., an optical sensor) that may be implanted within a living animal (e.g., a human) and may be used to measure an analyte (e.g., glucose or oxygen) in a medium (e.g., interstitial fluid, blood, or intraperitoneal fluid) within the animal. The sensor may include a sensor housing, an analyte indicator covering at least a portion of the sensor housing, and one or more compounds containing boronate or boronic acid moieties that reduce degradation of the analyte indicator.

Disclosed is a device and method for measuring biometric information. A biometric information measurement device according to an example embodiment may include an implant device configured to insert into a body of a subject to be analyzed, to emit an electromagnetic wave of a specific frequency, and to measure a signal reflected from a surrounding analyte; and at least one external device configured to supply power to the implant device and to receive measurement data of the implant device.

Described herein is an implantable device having a sensor configured to detect an amount of an analyte, a pH, a temperature, strain, or a pressure; and an ultrasonic transducer with a length of about 5 mm or less in the longest dimension, configured to receive current modulated based on the analyte amount, the pH, the temperature, or the pressure detected by the sensor, and emit an ultrasonic backscatter based on the received current. The implantable device can be implanted in a subject, such as an animal or a plant. Also described herein are systems including one or more implantable devices and an interrogator comprising one or more ultrasonic transducers configured to transmit ultrasonic waves to the one or more implantable devices or receive ultrasonic backscatter from the one or more implantable devices. Also described are methods of detecting an amount of an analyte, a pH, a temperature, a strain, or a pressure.

A signal sensing device includes a body and two signal sensing elements disposed in the body. An insulating layer is sandwiched between the two signal sensing elements. Each of the two signal sensing elements incudes a signal transmission section and a signal sensing section in electrical connection with the signal transmission section. The signal transmission sections are planar antennae parallel to each other and each having an antenna shape of meander-line type. The antenna shape of each transmission section has a vertical projection on a plane parallel to each signal transmission section. The vertical projections of the antenna shapes do not overlap completely. When a portion of the body forms a surrounding portion which surrounds a to-be-sensed target, a portion or an entirety of each signal sensing section is located on the surrounding portion.

A method for assessing pain experienced by a patient (3) comprises: receiving a sensor signal (8) which has been generated in a sequence of epochs (10) by a sensor (2) configured for measuring a physical activity of the patient (3), wherein each epoch (10) comprises a sequence of measurement periods (11), wherein the sensor signal (8) has been generated in each measurement period (11); determining a signal intensity value (12) for each measurement period (11) from the sensor signal (8); classifying the signal intensity values (12) of each epoch (10) with different physical activity classes (13a, 13b, 13c, 13d) to obtain a classification result (15) for the epoch (10); and determining a behavior assessment score (16) indicative of the pain experienced by the patient (3) from the classification results (15) of different epochs (10).

A system including: an antenna configured to be implanted in a region a living body, wherein a frequency response and / or attenuation response of the antenna shifts in response to changes in a physiological condition of the living body at the region; an input / output module outside the living body and configured to actuate the antenna to generate a response signal and to receive the response signal, wherein the response signal indicates a frequency response and / or attenuation response of the antenna; and a processor configured to: detect whether the frequency response and / or attenuation response indicates a shift in the frequency and / or attenuation response of the antenna; and in response to the detection of the shift issue and / or record a notice that a change occurred in the physiological condition at the region inside the living body.

A medical endoscope that has a single-use portion with a built-in surgical implement such as a grasper and physical indicia that immediately and clearly show how far a distal end of the implement has protruded from a distal end of a cannula. The indicia can be three dimensional to give a tactical indication in addition to a visual indication of how far the surgical device protrudes from the cannula.

Certain examples of the disclosure concern an implantable sensor. The implantable sensor includes a sensor assembly configured to connect to a suture. The sensor assembly also includes a substrate and a resonant circuit coupled to the substrate. The resonant circuit is configured to electrically resonate at a resonant frequency when exposed to a first electromagnetic field and to emit a second remotely detectable electromagnetic field. The substrate is configured to deform in response to a tensile force applied by the suture and to change a resonant parameter of the resonant circuit in response to the deformation.

Techniques for determining whether a ventricular depolarization is a premature ventricular contraction (PVC) depolarization may include processing circuitry of a medical system identifying an interval from a maximum slope point to a minimum slope point for each of a plurality of ventricular depolarizations and, for each of the plurality of ventricular depolarizations as a current ventricular depolarization, determining that the intervals from the maximum slope point to the minimum slope point for the current ventricular depolarization, a preceding adjacent ventricular depolarization of the plurality of ventricular depolarizations, and a subsequent adjacent ventricular depolarization of the plurality of ventricular depolarizations satisfy one or more slope criteria. The processing circuitry determines that the current ventricular depolarization is a PVC depolarization based on the intervals from the maximum slope point to the minimum slope point satisfying the one or more slope criteria.

The invention provides a positioning system and method for a permanent magnet target in a gastrointestinal tract. The positioning system comprises a magnetic source, a magnetic sensor array and a processing module, the magnetic source is used for generating a magnetic field; the magnetic sensor array is used for measuring the magnetic field intensity in the space; and the processing module acquires magnetic field intensity data, and further performs spatial position and orientation calculation of the target by using the magnetic moment and magnetic field intensity data of the magnetic source based on a magnetic dipole model and a magnetic moment theory. By means of the innovative magnetic field induction technology and the magnetic dipole model, the problems that in the prior art, positioning of an electronic capsule in the gastrointestinal tract is insufficient in precision, large in external interference, difficult in posture information obtaining, incapable of meeting the requirement for precise diagnosis and treatment in modern medical treatment and the like are solved, and permanent magnet target positioning in the gastrointestinal tract can be achieved.

An operable implant adapted for implantation into a patient's body. The operable implant comprises an operating device and a body-engaging portion, the operating device comprising an electric motor including a stationary part containing a plurality of coils and a movable part containing a plurality of magnets, such that sequential energization of the coils magnetically propels the magnets and, thereby, the movable part. The operating device further comprises an encapsulation adapted to hermetically encapsulate the coils of the stationary part, thereby forming a seal between the stationary part and the movable part, which is propelled by the contained magnets, such that the coils of the stationary part are sealed from bodily fluids when implanted.

The invention provides a degradable and stretchable wireless sensor with a multilayer circuit and a preparation method of the degradable and stretchable wireless sensor. The wireless sensor comprises an integrated folding structure and a packaging layer, the integrated folding structure comprises a plurality of layers of snakelike wire structures and a plurality of electrode plates; the snakelike wire structure provides inductance, and the electrode plate provides capacitance; the snakelike wire structure is formed by a planar and multi-cycle snakelike wire structure formed by a biodegradable metal and biodegradable polymer composite layer through multiple times of 180-degree twisting and folding, and patterns of the snakelike wire structure are overlapped after folding so as to realize effective series connection of the inductance coils; the electrode plates are bonded with each other through a biodegradable dielectric layer; the snakelike wire structure adopts a neutral axis separation design at the arc section, namely, the wire width is divided into multiple strands. Reliable series connection of multiple layers of coils can be achieved, inductance is effectively increased, high-frequency resistance is reduced, and therefore wireless transmission performance is improved, and meanwhile the requirements for flexibility, stretchability and biodegradability are completely met.

Embodiments that compensate for changes to sensor response characteristics (e.g., sensitivity) due to time durations are disclosed. The time durations can be the amount of time the sensor is in a post-manufacture packaged state prior to use, or the amount of time the sensor is in use. Sensor response changes due to other variables can also be compensated for.

The invention provides an in-vivo pressure detection sensor and detection system, and the sensor comprises an air bag which is used for being implanted into a to-be-detected part; the first air pressure sensor is located in the environment communicated with air in the air bag and used for measuring the air pressure value in the air bag, the air bag and the first air pressure sensor are combined to monitor the pressure in the organism, the size of the detection sensor is effectively reduced, the air bag is used for directly measuring the intracranial pressure, and the accurate intracranial pressure value is obtained. The brain tissue is prevented from being exposed to the injury risk; the first wireless power supply and communication module is used for wirelessly supplying power to internal components of the detection sensor and directly sending measured parameters to an external receiver, so that the structure of the detection sensor has high integration, a battery does not need to be arranged, the volume size of the detection sensor is further reduced, and the cost is reduced. The use experience of an implanter is improved, the processing performance and the communication performance of the detection sensor can be guaranteed, and the operation convenience of the detection sensor is improved.

Described herein is an implantable device configured to detect impedance characteristic of a tissue. In certain exemplary devices, the implantable device comprises (a) an ultrasonic transducer configured to emit an ultrasonic backscatter encoding information relating to an impedance characteristic of a tissue based on a modulated current flowing through the ultrasonic transducer; (b) an integrated circuit comprising (i) a variable frequency power supply electrically connected to a first electrode and a second electrode; (ii) a signal detector configured to detect an impedance, voltage, or current in a circuit comprising the variable frequency power supply, the first electrode, the second electrode, and the tissue; and (iii) a modulation circuit configured to modulate the current flowing through the ultrasonic transducer based on the detected impedance, voltage, or current; and the first electrode and the second electrode configured to be implanted into the tissue in electrical connection with each other through the tissue. Further described are systems including one or more implantable devices and an interrogator for operating the implantable device, methods of measuring impedance characteristic of a tissue in a subject, and methods of monitoring or characterizing a tissue in a subject.