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613results about "Intracranial pressure measurement" patented technology

Analyte sensing apparatus for hospital use

A system is provided for monitoring blood glucose data of a patient. The system includes a sensing device and hospital monitor. The sensing device includes a sensor and sensor electronics and is adapted to transmit information to the hospital monitor while continuing to sense blood glucose data. The communication between the sensing device and the hospital monitor may be wireless. The sensor electronics may include a sensor power supply, a voltage regulator, and optionally a memory and processor.
Owner:MEDTRONIC MIMIMED INC

System for providing blood glucose measurements to an infusion device

An infusion system includes an infusion device and a sensing device. The infusion system may further include a characteristic determining device. The infusion device also includes a communication system for transmitting to and receiving communications from the sensing device or a computer. The sensing device may sense an analyte of a bodily fluid of the user. The analyte may be calibrated using data from the infusion device and from a characteristic determining device. The system may be set up to automatically call for assistance when analytes reach a certain level.
Owner:MEDTRONIC MIMIMED INC

Method and apparatus for registration, verification, and referencing of internal organs

InactiveUS20050182319A1Sufficient informationPrevent material seeping into the deviceAudiometeringCatheterOrgan systemBiomedical engineering
Systems and methods for registering, verifying, dynamically referencing, and navigating an anatomical region of interest of a patient are provided. In one embodiment, the anatomical region of interest is imaged using an imaging device such as, for example, an x-ray device. A tracked registration device may then be removably inserted in a conduit within the anatomical region and the position of the registration device may be sampled by a tracking device as the registration device is moved within the anatomical region through the catheter. The sampled position data is registered to the image data to register the path of the conduit to the anatomical region of interest. The same or a similar device may be used to dynamically reference the movements affecting the anatomical region and modify the registration in real time. The registration may also be verified.
Owner:PHILIPS ELECTRONICS LTD

Systems and methods for making noninvasive physiological assessments

Systems and methods for assessment of tissue properties, noninvasively, by acquiring data relating to at least one aspect of intrinsic and / or induced tissue displacement, or associated biological responses, are provided. Data relating to tissue displacement and associated biological changes may be acquired by detecting acoustic properties of tissue using ultrasound interrogation pulses, preferably in a scatter or Doppler detection mode. Based on this data, tissue properties are assessed, characterized and monitored. Specific applications for systems and methods of the present invention include non-invasive assessment and monitoring of intracranial pressure (ICP), arterial blood pressure (ABP), CNS autoregulation status, vasospasm, stroke, local edema, infection and vasculitus, as well as diagnosis and monitoring of diseases and conditions that are characterized by physical changes in tissue properties. Methods and systems for localizing physiological condition(s) and / or biological response(s), such as pain, by targeting and selectively probing tissues using the application of focused ultrasound are also provided.
Owner:PHYSIOSONICS

System and method for prosthetic fitting and balancing in joints

A system and method for prosthesis fitting in joints comprising an artificial condyle and a spacer which cooperates with the condyle to form an artificial joint. The spacer embedded with at least one sensor which is responsive to a force generated between the condyle and the spacer. The artificial joint is adapted to move between a flexed position and an extended position defining a range of motion. The sensor is responsive to the force and generates an output representative of that force. The output is transmitted, either wirelessly or other, to a processor which utilizes an analysis program to display a representation of the forces applied. A practitioner utilizing the displayed analysis may intraoperatively determine the adjustments and balancing required within the artificial joint. The system may also utilize a ligament tension sensor which generates data representative of tension on a ligament of the artificial joint, and a joint angle sensor responsive to the range of motion of the artificial joint. The processor may be adapted to store the outputted sensor data to provide the practitioner with statistically relevant historical data.
Owner:THE BOARD OF TRUSTEES OF THE UNIV OF ILLINOIS

Method and apparatus to detect transponder tagged objects and to communicate with medical telemetry devices, for example during medical procedures

The presence or absence of objects tagged with transponders may be determined in an environment in which medical procedures are performed via an interrogation and detection system which includes a controller and a plurality of antennas positioned along a patient support structure. The antennas may be positioned along an operating table, bed, mattress or pad, sheet, or may be positioned on a drape, or shade. Respective antennas may successively be activated to transmit interrogation signals. Multiple antennas may be monitored for responses from transponders to the interrogation signals. For example, all antennas other than the antenna that transmitted the most recent interrogation signal may be monitored. Antennas may be responsive to force, a signal indicative of such force being produced. A wireless physiological condition monitor may detect patient physiological conditions and wirelessly transmit signals indicative of such.
Owner:TYCO HEALTHCARE GRP LP

Apparatus and methods using acoustic telemetry for intrabody communications

Systems and methods provide intrabody communication using acoustic telemetry. The system includes a first or control implant including a first acoustic transducer, and a second implant including a switch and a second acoustic transducer coupled to the switch. The second acoustic transducer receives acoustic signals from the first acoustic transducer for closing the switch to activate the second implant. The second implant may include a sensor for measuring a physiological parameter that is transmitted using acoustic signals including the physiological data to the first implant. For example, the second implant may measure pressure in the patient's heart that may be used by the first implant to control a pacemaker. Alternatively, the second implant may blood sugar concentration that may be used by the first implant to control an insulin pump. Alternatively, the first implant may store and transfer the data to an external device for monitoring the patient.
Owner:REMON MEDICAL TECH

Neurological event monitoring and therapy systems and related methods

Systems and methods for detecting, monitoring, and / or treating neurological events based on, for example, electrical signals generated from the patient's body are disclosed. Various embodiments of the invention include a system for predicting occurrence of a neurological event in a patient's body. The system may include an implant configured to be placed in the body and detect signals indicative of an activity that precedes the neurological event, and a processing unit configured to process the detected signals so as to predict the neurological event prior to the occurrence.
Owner:CYBERKINETICS

Methods for data retention in an implantable medical device

Methods for storing data records associated with a medical monitoring event in a data structure. An implanted device obtains data and stores the data in the data record in a first data structure that is age-based. Before an oldest data record is lost, the oldest data record may be stored in a second data structure that is priority index-based. The priority index may be determined by a severity level and may be further determined by associated factors. The implanted device may organize, off-load, report, and / or display a plurality of data records based on an associated priority index. Additionally, the implanted device may select a subset or composite of physiologic channels from the available physiologic channels based on a selection criterion.
Owner:MEDTRONIC INC

Systems and methods for determining intracranial pressure non-invasively and acoustic transducer assemblies for use in such systems

Systems and methods for determining ICP based on parameters that can be measured using non-invasive or minimally invasive techniques are provided, wherein a non-linear relationship is used to determine ICP based on one or more variable inputs. The first variable input relates to one or more properties of a cranial blood vessel and / or blood flow, such as acoustic backscatter from an acoustic transducer having a focus trained on a cranial blood vessel, flow velocity in a cranial blood vessel, and the like. Additional variables, such as arterial blood pressure (ABP), may be used in combination with a first variable input relating to one or more properties of a cranial blood vessel, such as flow velocity of the middle cerebral artery (MCA) to derive ICP using a non-linear relationship. Methods and systems for locating target areas based on their acoustic properties and for acoustic scanning of an area, identification of a target area of interest based on acoustic properties, and automated focusing of an acoustic source and / or detector on a desired target area are also provided. Acoustic transducer assemblies are described.
Owner:PHYSIOSONICS +1

Noninvasive measurement of chemical substances

Utilization of a contact device placed on the eye in order to detect physical and chemical parameters of the body as well as the non-invasive delivery of compounds according to these physical and chemical parameters, with signals being transmitted continuously as electromagnetic waves, radio waves, infrared and the like. One of the parameters to be detected includes non-invasive blood analysis utilizing chemical changes and chemical products that are found in the conjunctiva and in the tear film. A transensor mounted in the contact device laying on the cornea or the surface of the eye is capable of evaluating and measuring physical and chemical parameters in the eye including non-invasive blood analysis. The system utilizes eye lid motion and / or closure of the eye lid to activate a microminiature radio frequency sensitive transensor mounted in the contact device. The signal can be communicated by wires or radio telemetered to an externally placed receiver. The signal can then be processed, analyzed and stored. Several parameters can be detected including a complete non-invasive analysis of blood components, measurement of systemic and ocular blood flow, measurement of heart rate and respiratory rate, tracking operations, detection of ovulation, detection of radiation and drug effects, diagnosis of ocular and systemic disorders and the like.
Owner:GEELUX HLDG LTD

Systems and methods for making noninvasive assessments of cardiac tissue and parameters

Systems and methods for noninvasive assessment of cardiac tissue properties and cardiac parameters using ultrasound techniques are disclosed. Determinations of myocardial tissue stiffness, tension, strain, strain rate, and the like, may be used to assess myocardial contractility, myocardial ischemia and infarction, ventricular filling and atrial pressures, and diastolic functions. Non-invasive systems in which acoustic techniques, such as ultrasound, are employed to acquire data relating to intrinsic tissue displacements are disclosed. Non-invasive systems in which ultrasound techniques are used to acoustically stimulate or palpate target cardiac tissue, or induce a response at a cardiac tissue site that relates to cardiac tissue properties and / or cardiac parameters are also disclosed.
Owner:PHYSIOSONICS +1

System for treating tissue swelling

A system and method for performing site specific therapy to alleviate tissue swelling, involving the placement and use of recovery catheters having semipermeable membranes adapted to recover bulk fluid or fluid components from a tissue site. Fluid recovery can be accomplished by the delivery of a hydratable medium to the membranes, under conditions suitable to permit fluid or components to pass through the membranes in order to hydrate the medium, which is then removed from the tissue site. The method and system can also include the use of components for monitoring the progress of the system, and components for introducing a recovery catheter to a tissue site.
Owner:TWIN STAR MEDICAL

Cerebral or organ interface system

InactiveUS7346391B1Good conditionEnergy efficient and cost-effectiveElectroencephalographyHead electrodesEngineeringCerebrum
A cerebral and / or interface system has a housing mechanism configured to be at least partially spaced in a cavity formed in the subject's skull; an attaching mechanism for attaching the housing mechanism to the subject's skull; a sealing mechanism for providing a fluid-tight seal between the housing mechanism and the subject's skull; a control mechanism spaced within the housing mechanism; a communication mechanism with one or more sensors embedded in the subject's brain connecting the control mechanism to the subject's brain; and a power source spaced within the housing mechanism. Optional embodiments include a treatment portion for cooling or heating adjacent tissue, a medicament portion for administering medicament to adjacent tissue, a separate auxiliary compartment with a removable lid secured to or spaced apart from the housing mechanism, contacts extending outwardly from housing mechanism, and / or a supporting mechanism for precisely displacing the housing mechanism angularly or along x-, y-, and z-axes.
Owner:FLINT HILLS SCI L L C

Method for programming a patient care device

The present invention is directed to a system and method for providing care to a patient, comprising a patient care device having a number of configuration databases stored in a memory in the device. Each configuration database preferably includes protocols, operating limits, rule sets and / or operating features that collectively define an operating environment, or personality, of the device. Selection of a specific configuration database preferably is based at least in part upon patient-specific information obtained from any location in a distributed hospital network. Examples of such patient-specific information include patient age or size, patient medical characteristics, a location of the patient or a location of the care device. In a preferred embodiment, programming a patient care device to deliver a drug to a patient entails activating a configuration database and scanning a machine-readable drug label identifying a particular protocol stored in the activated database. The selected protocol includes default parameters for delivering the drug, and the label optionally includes instructions for deviating from the default protocol.
Owner:CAREFUSION 303 INC

Multi-modal system for detection and control of changes in brain state

ActiveUS7204833B1Increase temporo-spatial resolutionWithout of complications and without in performanceElectroencephalographyInternal electrodesBrain stateElectrical stimulations
A multi-purpose device mechanism for sensing and control of changes in brain state includes a shaft portion and extendible elements structured for insertion into target tissue of the brain of a subject patient, cooling means configured to operatively apply cooling therapy to the target tissue, stimulation means having at least one electrical contact structured to operatively apply electrical stimulation therapy to the target tissue, sensing means including at least one sensor monitoring a biological signal of the subject patient, control means responsive to the sensing means wherein the control means is structured to, in response to signals from the sensing means that indicate the presence of a pre-determined physiological condition or occurrence of an undesirable state change, automatically cause the cooling means and / or the stimulation means to initiate or terminate the cooling therapy and / or the electrical stimulation therapy respectively and an energy source for powering the various components of the multi-purpose device mechanism. A modified embodiment includes a least one spiral conduit and at least one return conduit for cycling coolant or refrigerant to and from the shaft portion and an external reservoir. Another modified embodiment includes pressurizing means for extending at least one extendable tube into brain tissue surrounding the shaft portion.
Owner:FLINT HILLS SCI L L C

Contact lens for collecting tears and detecting analytes for determining health status, ovulation detection, and diabetes screening

Utilization of a contact device placed on the eye in order to detect physical and chemical parameters of the body as well as the non-invasive delivery of compounds according to these physical and chemical parameters, with signals being transmitted continuously as electromagnetic waves, radio waves, infrared and the like. One of the parameters to be detected includes non-invasive blood analysis utilizing chemical changes and chemical products that are found in the conjunctiva and in the tear film. A transensor mounted in the contact device laying on the cornea or the surface of the eye is capable of evaluating and measuring physical and chemical parameters in the eye including non-invasive blood analysis. The system utilizes eye lid motion and / or closure of the eye lid to activate a microminiature radio frequency sensitive transensor mounted in the contact device. The signal can be communicated by wires or radio telemetered to an externally placed receiver. The signal can then be processed, analyzed and stored. Several parameters can be detected including a complete non-invasive analysis of blood components, measurement of systemic and ocular blood flow, measurement of heart rate and respiratory rate, tracking operations, detection of ovulation, detection of radiation and drug effects, diagnosis of ocular and systemic disorders and the like.
Owner:GEELUX HLDG LTD

Apparatus for data retention in an implantable medical device

An apparatus for storing data records associated with a medical monitoring event in a data structure. An implanted device obtains data and stores the data in the data record in a first data structure that is age-based. Before an oldest data record is lost, the oldest data record may be stored in a second data structure that is priority index-based. The priority index may be determined by a severity level and may be further determined by associated factors. The implanted device may organize, off-load, report, and / or display a plurality of data records based on an associated priority index. Additionally, the implanted device may select a subset or composite of physiologic channels from the available physiologic channels based on a selection criterion.
Owner:MEDTRONIC INC

Systems and methods for making non-invasive physiological assessments by detecting induced acoustic emissions

Systems and methods for assessing a physiological parameter of a target tissue wherein a pulse of focused ultrasound is applied to a target tissue site thereby inducing oscillation of the target tissue. By these systems and methods, a property of an acoustic signal emitted from the oscillating target tissue is measured and related to a physiological property of the tissue. Specific applications for systems and methods of the present invention include the assessment and monitoring of intracranial pressure (ICP), arterial blood pressure (ABP), CNS autoregulation status, vasospasm, stroke, local edema, infection and vasculitus, as well as diagnosis and monitoring of diseases and conditions that are characterized by physical changes in tissue properties.
Owner:PHYSIOSONICS +1

Bi-directional cerebral interface system

A cerebral interface system including a housing mechanism spaced at least partially in a cavity formed in the subject's skull; an attaching mechanism; a fluid-tight sealing mechanism; a control mechanism; a communication mechanism with one or more sensors embedded in the subject's brain connecting the control mechanism to the subject's brain; a power source; an inner wall substantially aligned with an inner surface of the subject's skull; an outer wall which may include an auxiliary portion extending tangentially outwardly from the cavity formed in the subject's skull; a communication link connecting the control mechanism to external apparatus for transmitting or receiving information related to detecting, predicting, controlling, or aborting abnormal brain activity of the subject; and an output mechanism which is activatable by the control mechanism.
Owner:OSORIO IVAN +1

Method and device for treatment of medical conditions and monitoring physical movements

InactiveUS20060212097A1Accurate monitoringEffectively wirelessly transmit dataMaterial nanotechnologyElectrotherapyAccelerometerGyroscope
The subject invention utilizes MEMS devices and wireless data transmission means to monitor and sense certain patient conditions or reactions, such as changes in pressure, patient movements, and tremors. These sensor devices include but are not limited to MEMS gyroscopes, MEMS accelerometers, and MEMS pressure sensors. The data from the sensor means is then preferably wirelessly transmitted to a second MEMS device to treat or alter the medical condition that has been monitored.
Owner:PENN STATE RES FOUND

Devices, systems and methods for endocardial pressure measurement

Endocardial pressure measurement devices, systems and methods for the effective treatment of congestive heart failure and its underlying causes, in addition to other clinical applications.
Owner:TRANSOMA MEDICAL

System for transcutaneous monitoring of intracranial pressure

A system for measuring and converting to an observer intelligible form an internal physiological parameter of a medical patient. The invention allows transcutaneous telemetry of the measured information intracranial pressure via a system which includes a patient implanted sensor module and a processing and display module which is external of the patient and optically coupled to the sensor module via an external coupling module. A sensor within the implanted module transduces the measured information and a near infrared (NIR) emitter transmits this telemetry information when interrogated by the complementary external coupling module. Alternately, a set of tuned inductor-crystal circuits versus inductor-crystal comprised in part of a cylindrical crystal oscillator whose resonant frequency is sensed by a dipper circuit arrangement is provided. Power for the sensor module is derived inductively through rectification of a transcutaneously-applied high-frequency alternating electromagnetic field which is generated by a power source within the external coupling module, in concept much like a conventional electrical transformer. A computer within the processing and display module calculates the parameter value from the telemetry signal and represents this data either in numerical, graphical, or analog format.
Owner:WOLF ERICH

Pressure sensing devices

A pressure sensing catheter having a pressure sensor and an antenna that is coupled to the pressure sensor, e.g., by a connector, are provided. The pressure sensor can be adapted to measure a pressure surrounding the catheter, and the antenna can be adapted to telemetrically communicate the measured pressure to an external device. In an exemplary embodiment, the antenna, pressure sensor, and / or connector are hermetically sealed, e.g., by the catheter and / or a coating, to prevent the antenna, pressure sensor, and connector from coming into contact with fluid, thereby allowing the catheter to be permanently implanted or otherwise used for long term use. Exemplary methods for manufacturing and using pressure sensing catheters are also provided.
Owner:INTEGRA LIFESCI SWITZERLAND SARL

Electrical stimulation system and associated apparatus for securing an electrical stimulation lead in position in a person's brain

In one aspect, an apparatus is provided for securing an electrical stimulation lead in position in a person's brain. The apparatus includes a body configured to seat within a burr hole formed in the person's skull. The apparatus also includes a central elastic membrane coupled to the body and extending across a central aperture of the body. The elastic membrane includes a number of pre-formed openings provided for purposes of securing the lead in position within the brain after implantation. Each pre-formed opening may penetrate through an entire thickness of the elastic membrane. Each pre-formed opening may be selected for insertion of the lead into the brain. Each pre-formed opening is adapted to elastically expand as the lead is inserted through the pre-formed opening and positioned in the brain and is adapted to elastically contract on the lead to secure the lead in position within the brain after implantation.
Owner:ADVANCED NEUROMODULATION SYST INC

Apparatus and method for non-invasive measurement of intracranial pressure

InactiveUS20060206037A1Reduction in amount of blood volumeIntracranial pressure measurementSensorsCentral retinal veinNon invasive
An intracranial pressure (ICP) within a patient's skull can be determined by observing a vessel in the patient's eye, desirably in the red and / or infrared (IR) spectrum, while causing the pressure inside the eye to increase. On or about the time the observed vessel collapses in response to increasing the pressure inside the eye, the pressure inside the eye is determined. The ICP can then be determined as a function of the pressure inside the eye. Desirably, the vessel being observed is the central retinal vein of the eye.
Owner:BRAXTON ERNEST E
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