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8095198 |
Methods for detecting osteolytic conditions in the body
Methods and systems for detecting a biological response indicative of osteolysis or osteolytic pre-conditions in bone.
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8055322 |
Ion sensor for long term use in complex medium
Devices and methods for measuring a target ion concentration uses an electrode pair. The pair includes a working electrode and a reference electrode. The working and reference electrodes are...
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7970449 |
Method and apparatus for background current arrangements for a biosensor
Embodiments of the present invention provide for raising a background current setting for a biosensor above the actual (measured) background current present (i.e., overestimating the background...
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7826880 |
Electrochemical sensor for in-vivo or ex-vivio measurements of the carbon dioxide partial pressure of living tissue
A physiological sensing device for the measurement of pCO2 includes a closed chamber bounded, at least partially, by a carbon dioxide permeate e membrane (12). There are two electrodes (10) within...
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7813780 |
Biosensors and methods for making and using them
Embodiments of the invention provide analyte sensors having optimized permselective membranes and methods for making and using such sensors. Embodiments of the invention also provide analyte...
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7809441 |
Implantable medical device with chemical sensor and related methods
In an embodiment, the invention includes an implantable medical device with a pulse generator and a chemical sensor in communication with the pulse generator, the chemical sensor configured to...
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7736310 |
On-body medical device securement
Devices and methods for maintaining a medical device on-body are provided. Embodiments include medical device securement systems having first and second on-body securement elements. Also provided...
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7729737 |
Method and apparatus for background current arrangements for a biosensor
Embodiments of the present invention provide for raising a background current setting for a biosensor above the actual (measured) background current present (i.e., overestimating the background...
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7630747 |
Apparatus for ascertaining blood characteristics and probe for use therewith
An apparatus for use with a patient having a vessel carrying blood to ascertain characteristics of the blood. The apparatus includes a display module and a probe having a distal extremity adapted...
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7389132 |
Mold-in method and apparatus
The present invention mainly relates to a method and apparatus for measuring the concentration of a solute in a solvent. Disclosed is an apparatus or method for determining the concentration of a...
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7383072 |
Sweat sensor system and method of characterizing the compositional analysis of sweat fluid
A method of sensing the concentration level of at least one particular electrolyte in the sweat fluid of a subject, includes providing a sweat sensor system having sweat fluid absorbing material,...
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7383071 |
Microsensor system and method for measuring data
One embodiment is a microprobe. An example of the microprobe comprises a housing having an aperture. This example of the microprobe also comprises an ISFET attached to the housing. The ISFET may...
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7373195 |
Ion sensor for long term use in complex medium
Devices and methods for measuring a target ion concentration uses an electrode pair. The pair includes a working electrode and a reference electrode. The working and reference electrodes are...
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7231242 |
Method for measuring blood urea level by reverse iontophoresis
A method for measuring and determining urea level in human blood by reverse iontophoresis comprising the following steps of: placing an anode electrode on skin,placing a container comprising a...
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6701341 |
Scalable real-time ultrasound information processing system
An ultrasound information processing system is disclosed in which ultrasound image data is packetized into ultrasound information packets and routed to one or more of a plurality of processors for...
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6616614 |
Apparatus and method for ascertaining cardiac output and other parameters
Apparatus for ascertaining cardiac output of the heart of a patient comprising a control and display module. A venous probe is inserted into a vein in the forearm of the patient and is coupled into...
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6411834 |
Biological sensor
An annul protecting portion 23 having a thickness larger than the thickness of a sensor sensitive portion 1 is provided in such a manner as to surround the sensor sensitive portion 1, the sensor...
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6219567 |
Monitoring of total ammoniacal concentration in blood
Total ammoniacal concentration (TAC) in blood is measured and displayed on a repetitive basis by a controller driven sensor arrangement which may be utilized either with a catheter structure or...
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6023630 |
Probe assembly and apparatus for measuring the PH of a tissue of a human or animal organ
A probe assembly includes at least two electrodes for measuring a potential difference between two measurement sites of a tissue of a human or animal organ and at least one sensor for measuring the...
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5728281 |
Implantable medical device including an arrangement for measuring a blood property having a carbon reference electrode
An implantable medical device for in vivo electrochemical measurements of blood properties, such as measurements of, inter alia, oxygen pressure, glucose and pH, avoids the problem with the...
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5698083 |
Chemiresistor urea sensor
A sensor to detect and quantify urea in fluids resulting from hemodialysis procedures, and in blood and other body fluids. The sensor is based upon a chemiresistor, which consists of an...
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5680858 |
Method and apparatus for in vivo determination of the concentration in a body fluid of metabolically significant substances
A method for in vivo determination of the concentration in a body fluid of metabolically significant substance comprises storing of a needle with a sensor in a liquid-filled ampoule, brief...
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5617851 |
Ultrasonic transdermal system for withdrawing fluid from an organism and determining the concentration of a substance in the fluid
A noninvasive method and apparatus for withdrawing fluid from an organism and determining the concentration of a substance in the fluid is disclosed. The noninvasive apparatus comprises a substance...
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5513636 |
Implantable sensor chip
An implantable sensor chip, which is preferably small enough to be injected through a hypodermic needle, includes a base constructed of an electrically insulating material, and at least one sensor...
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5511547 |
Solid state sensors
A stabilized bio-inert sensor for the determination of an analyte, especially pO2, pCO2 and pH, in a medium which comprises a chemical indicator sensitive to the analyte in association with a...
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5507289 |
System and method to diagnose bacterial growth
A system and a method for monitoring intragastrointestinal concentrations of ammonium, and urease, during short or prolonged periods is presented, as an indicator of the presence and activity of an...
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5505828 |
Calibration solutions useful for analysis of biological fluids and methods employing same
Novel calibration solutions are provided which are useful, for example, with sensor assemblies used for analysis of CO2, and optionally, for concurrent analysis of O2, especially in combination...
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5425868 |
Sensor for non-invasive, in vivo determination of an analyte and blood flow
The sensor (1) comprises a sensor body (3) thermostatable by means of a first thermostating system (14,15) and having an outer surface (3a,40a) for application to the human body (28) in heat...
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5354448 |
Electrochemical sensor
An electrochemical sensor for the determination of the partial pressure of oxygen in a bloodstream comprising a cathode and an anode immersed in an electrolyte contained in a chamber defined by an...
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5330634 |
Calibration solutions useful for analyses of biological fluids and methods employing same
Novel calibration solutions are provided which are useful, for example, with sensor assemblies used for analysis of CO2, especially in combination infusion fluid delivery/blood chemistry analysis...
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5322609 |
Device for detecting electrolytes in liquid samples
A biosensor device for detecting electrolytes in liquid samples includes a capillary tube having a lumen extending therethrough. This lumen receives and retains liquid to be sampled for...
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5284139 |
Hemometrix temperature compensation
A method for converting a value for the partial pressure of oxygen (pO2) in blood at a measurement temperature to a corresponding value at a reference temperature (37° C.). A value for pO2 is ...
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5251633 |
Optical probe
An improved optical probe for the invasive measurement of partial carbon dioxide pressures is disclosed that minimizes pCO2 reading drift. An optical probe for the invasive measurement of the...
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5250419 |
Method for the direct measurement of at least one chemical parameter of skin using a biosensor
This biosensor comprises a membrane (8), in which an enzyme catalyzing the transformation of a substrate used in the cutaneous metabolism is immobilized, means for detecting and measuring a...
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5192417 |
Lithium ion sensor
A lithium ion sensor includes a FET, a redox layer having a redox function covering a gate isolating membrance of the FET, and a lithium ion-sensitive layer selectively sensing lithium ion covering...
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5145565 |
Contamination-free method and apparatus for measuring body fluid chemical parameters
A sample of a body fluid, such as blood, is collected in a cartridge having a sample chamber for storing the sample and one or more calibration chambers, each for storing a respective calibration...
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5078137 |
Apparatus for measuring oxygen partial pressure and temperature, in living tissue
A probe adapted for insertion in living tissue for measuring oxygen partial pressure and temperature at a plurality of sites in living tissue is provided. A temperature sensitive resistor is...
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5039492 |
Optical pH and gas concentration sensor
An optical pH sensor and a gas sensor utilizing the pH sensor. The pH sensor includes an indicator whose absorbance is a function of the concentration of hydronium ions in a media surrounding the...
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5018527 |
Sensor for the measurement of ion activity
A sensor for measuring the activity of ions by means of ion-selective membranes (4) improves the measuring possibilities and reduces the dimensions of the sensor in that a plurality of such...
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4974592 |
Continuous on-line blood monitoring system
A continuous on-line blood monitoring system for determining the ionic concentrations of certain ions within blood is disclosed. By use of a synchronized valving mechanism within the device, as...
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4890620 |
Two-dimensional diffusion glucose substrate sensing electrode
Enzyme electrode assembly suitable for sensing physiologically important molecules such as glucose wherein the rate of accessibility of enzyme substrates to the enzyme is differentially regulated...
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4841974 |
Apparatus and method for the examination of a liquid medium
A measuring canal is provided which is connected to a catheter. The canal includes a measuring sensor and a reference sensor. The catheter includes several lumens that have a common opening to the...
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4835477 |
Process for the determination of the hematocrit level of whole blood and apparatus for carrying out the process
There is described a method and apparatus for the determination of hematocrit levels in which both the conductivity of whole blood and the conductivity of blood plasma are determined together....
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4815471 |
Catheter assembly
A compact catheter assembly provides for the communication of a reference pressure to a pressure-sensing transducer by forming a passageway between spaced electrical conductors mounted on a planar...
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4808292 |
Arrangement for stabilizing a gas-reference electrode
In a catheter or hollow needle type electrolytic measuring device having a measuring electrode and a gas reference electrode, an arrangement for stabilizing the operation of the gas reference...
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4748562 |
Portable circuit and method for performing a time study and analysis of bodily characteristics
A portable circuit and method for performing a time study and analysis of bodily ionic characteristics as esophageal pH includes a transducer 11 for measuring pH and generating a proportional...
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4706678 |
Electrochemical reference electrode
An electrochemical reference electrode having improved potential stability is provided, such reference electrode being suitable for use as a second-order or half-cell component within a system for...
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4700709 |
Apparatus and method for determining ammonium ion concentration and total ammonia concentration in fluids or tissue
Apparatus comprising an ammonia electrode, a pH electrode and a thermistor is utilized in determining ammonium in concentration and total ammonia concentration by simultaneously measuring to...
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4697450 |
Gas monitor having trend indicators
An improved device for determining the trend of the partial pressure of a gas, such as oxygen or carbon dioxide, which diffuses outwardly through a patient's skin. The device, such as a cutaneous...
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4682602 |
Probe for medical application
A medical probe having at least one transducer or electrode for registering or influencing tissue activities is disclosed. The probe comprises a substrate having a supporting surface and a cover...
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