588 results about "Pressure monitors" patented technology

Pressure is measured on both sides of an occluding member for determining when pressure forces on the occluding member may cause migration of the occluding member. An alarm indicates when the pressure force on the balloon exceed a predetermined threshold. In another aspect of the invention, a pressure monitor determines when a rate of pressure increase with respect to the fluid volume in the balloon reaches a predetermined threshold when inflating the occluding member. A predetermined amount of fluid is then added to the balloon so that the balloon is not under inflated or over inflated.

A method of treating urinary incontinence in a patient by: providing a pressure monitor probe comprising a catheter having a pressure responsive region and a distal portion, the pressure responsive region spaced a predetermined distance from the distal portion; inserting the pressure monitor probe into the patient's urethra such that the distal portion is positioned in the patient's bladder adjacent the UVJ, thereby positioning the pressure responsive region of the catheter within the urethra a predetermined distance from the UVJ; and surgically modifying the pressure applied against the urethra while monitoring the pressure applied against the urethra using the probe. An intraurethral pressure monitor probe and an intraurethral pressure monitoring assembly are also provided.

A delivery system to provide end organ oxygenation and even systematic oxygenation in the face of ischemic result. The deliver system including a retrograde oxygenation and perfusion stent. The stent employing at least two and possibly more channels to allow flow of the perfusate from the device to the renal pelvis then to a back out to a collection apparatus. The stent may include various vital sign monitors, such as a renal pressure monitor, temperature monitor, and even an oxygenation monitor. The stent may include an anchoring device to allow the stent to be anchored into the renal pelvis in a temporary way during the retrograde oxygenation process.

A diagnostic method for a gas supply system includes: determining a desired ramp rate for filling a vessel from a supply of compressed gas; monitoring the actual pressure of gas entering the vessel; and discontinuing the flow of gas into the vessel when the actual pressure deviates from the intended pressure at the desired ramp rate by an undesired amount. A system for carrying out the method includes a flow controller for controlling operation of the supply system to deliver compressed gas from a source to a vessel through a supply line at a desired ramp rate. The system employs a pressure monitor downstream of a control valve for measuring the pressure of gas directed into the vessel and transmitting pressure-related data to the flow controller, which closes the control valve to discontinue filling of the vessel if the actual pressure exceeds a permissible deviation from the intended pressure.

A pressure capsule embedded in a pacemaker lead to monitor intracardiac chamber pressure is described. This pressure monitor capsule provides highly accurate pressure readings while insuring a high integrity seal against bodily fluids and tissue growth. The capsule is intended to be embedded into a pacemaker cardiac lead or a catheter with the distal (Tip) isolation diaphragm sensing pressure, coupling the pressure through an air column to a protected sensing MEMS device and providing a secure fluid seal to the lead walls. The proximal (Back) end of the capsule provides the electrical interface through the lead to the pacemaker pulse generator.

A warning device configured for removable mounting in combination with a high pressure gas cylinder and a regulator used to regulate the high pressure gas supplied by the cylinder. The device compression mounts between the regulator and tank outlet on conventional portable oxygen and gas supply systems using a specially configured manifold. The device features one or a combination of alarms, from a group including audio, visual, electronic, and remotely transmitted alarms. These alarms are activated by a pressure switch monitoring the remaining supply in the gas cylinder through a conduit the manifold. The alarm signal from the device alerts the user, or a third party monitoring the user, of current tank pressure or will sound an alarm when remaining high pressure gas inside the gas cylinder drops below a predetermined level.

Apparatus for delivering biologic sealant device that includes a pressure monitor coupled to the delivery device to measure pressure within the device. A method of treating a disc using the device as well as a kit including the device is described.

A series of embodiments of multi-lumen, multisegmented (or variable diameter) catheters and associated multi-channel flow control and measurement systems and methods for simultaneous delivery of a medium to a plurality of locations is described. The need for precise, stable reliable, and repeatable flow control in therapy delivery catheters is crucial to the efficacious treatment of the clinical manifestations of peripheral vascular disease (PVD) and other such maladies. Such treatments may involve the placement of multi-lumen catheters into peripheral arterial trees, with the subsequent need to govern the flow dynamics within each individual lumen of the multi-lumen device in such a way that an optimum distribution of the agent is achieved intra-arterially. Combinations of pumps, flow monitors, pressure monitors, feedback loops and related hardware and software collectively capable of achieving this goal are described. In other embodiments, this device and method could be used for infusions into tissues and solid organs, and microcoil systems can be added to the various components of the catheter systems to improve the imaging quality during MR-guided procedures.

Certain embodiments of the present invention are related to an implantable monitoring device to monitor a patient's arterial blood pressure, where the device is configured to be implanted subcutaneously. The device includes subcutaneous (SubQ) electrodes and a plethysmography sensor. Additionally, the device includes an arterial blood pressure monitor configured to determine at least one value indicative of the patient's arterial blood pressure based on at least one detected predetermined feature of a SubQ ECG and at least one detected predetermined feature of a plethysmography signal. Alternative embodiments of the present invention are directed to a non-implantable monitoring device to monitor a patient's arterial blood pressure based on features of a surface ECG and a plethysmography signal obtained from a non-implanted sensor.

This invention is a method and system for reporting the under or over pressure conditions on motor vehicle tires. The device is comprised of air hoses, pressure sensors, radio transmitters with antennas, a radio receiver, a display unit with lights, batteries, lights, and associated electrical components. An assembly mounted on the front of each wheel, over or in place of the hubcap, consists of an air pressure monitor utilizing air pressure inflation valves, a radio transmitter with battery cell, a radio transmitter antenna, and high / low indicator lights. Air hoses attached to each tire's valve stem are connected to the air pressure inflation valves of the air pressure monitors. The wheel mounted transmitters are powered by a low voltage battery that is normally powered off until activated by the changes of the pre-set air pressure of the tire air pressure monitoring sensor.

A cabin pressure altitude monitor and warning system provides a warning when a detected cabin pressure altitude has reached a predetermined level. The system is preferably embodied in a portable, pager-sized device that can be carried or worn by an individual. A microprocessor calculates the pressure altitude from signals generated by a calibrated pressure transducer and a temperature sensor that compensates for temperature variations in the signals generated by the pressure transducer. The microprocessor is programmed to generate a warning or alarm if a cabin pressure altitude exceeding a predetermined threshold is detected. Preferably, the microprocessor generates two different types of warning or alarm outputs, a first early warning or alert when a first pressure altitude is exceeded, and a second more serious alarm condition when either a second, higher pressure altitude is exceeded, or when the first pressure altitude has been exceeded for a predetermined period of time. Multiple types of alarm condition indicators are preferably provided, including visual, audible and tactile. The system is also preferably designed to detect gas concentrations and other ambient conditions, and thus incorporates other sensors, such as oxygen, relative humidity, carbon dioxide, carbon monoxide and ammonia sensors, to provide a more complete characterization and monitoring of the local environment.

Techniques are described for estimating a rate of blood flow from a heart, such as a stroke volume or a cardiac output, as a function of a pressure in the heart. A pressure monitor may measure pressure values, and identify the times at which pressure values and valve opening and closing occur. The pressure monitor may estimate a velocity-time function as a function of the measured pressures and identified times, and may calculate a velocity-time integral by integrating the velocity-time function. The pressure monitor may also calculate an estimated velocity-time integral directly as a function of the measured pressures and the identified times. The pressure monitor may calculate the stroke volume or cardiac output using the velocity-time integral. The pressure monitor may control a delivery of therapy by an implantable medical device as a function of the stroke volume or cardiac output.

A non-invasive arterial blood pressure monitor uses an inflatable cuff that incorporates the first bladder that is filled with non-compressible liquid or gel. The bladder can be pressurized by an action of a pressurizing device superimposed onto its outer surface. In a preferred embodiment, a pressurizing device is an air-filled second bladder being connected to an air pump and bleed valve. The first bladder is positioned between the patient's body and the second bladder. During operation, the second bladder compresses the first bladder, which, in turn, compresses the patient's artery against the supporting bone. The mechanical coupling between the blood-filled artery of a patient and the liquid-filled bladder of a dual-bladder cuff is improved for detecting pressure oscillations in a broad frequency range. The pressure sensor that is coupled to the first bladder also functions as a hydrophone for picking-up the mechanical oscillations from any part of the occluded limb or digit. This allows for improved computation of the arterial pressure.

The present invention relates to a replaceable module for use with a thermal contrast therapy systems. The replaceable module may be an automated thermal contrast therapy module which includes a casing, a manual mixing valve, an automated mixing valve, an automated mixing valve actuator, a temperature sensor, and an interface. A cold and a hot fluid are mixed to generate a therapy fluid. The therapy fluid may be output to a therapy bladder. The second replaceable module is a compression therapy module which includes a casing, an air pump, a pneumatic solenoid, and a pressure monitor. The casing may include a pressurized air pathway including an air outlet. The pump may pressurize the air within the pathway, and the solenoid may regulate the air pressure using feedback from the pressure sensor. Additionally, a pressure relief valve may release pressure if it gets above a safety threshold. The compression therapy module may also include a fluid pathway.

The invention discloses a real-time adjustable and controllable hanging type underground oil and water separating system, which comprises an underground sleeve pipe, a water injection oil pipe, an oil extracting oil pipe and a flow rate control valve, wherein the flow rate control valve is arranged at the wellhead part, the aboveground ground is provided with a visual control device, a hanging type three-way joint connected with the oil extracting oil pipe, an oil and water separator and the water injection oil pipe is arranged in the sleeve, the oil and water separator is connected with an electric submersible pump unit, a water injection pressure regulating device is arranged on the water injection oil pipe, a flow rate and pressure monitoring instrument is arranged in the electric submersible pump unit, a flow rate and pressure monitoring instrument and a regulating valve are arranged in the flow rate control valve, monitoring instrument cables and signal transmission cables are respectively connected among the electric submersible pump unit, the water injection pressure regulating device, the flow rate control valve and the visual control device, the visual control device converts received real-time flow rate and pressure signals into visual data to be output, and the work of the whole system is regulated and controlled. The hanging type underground oil and water separating system has the advantages that the stability is high, the treatment capability is high, and the hanging type underground oil and water separating system can be widely applied to an oilfield same-well production injection process.

A system for a pneumatically-powered vitrectomy machine includes an output port, a venting valve, a venting manifold, a pressure transducer, and a controller. The output port provides pressurized gas to a vitrectomy probe. The venting valve is located close to the output port. The venting manifold fluidly connects the venting valve to a venting port. The venting port vents pressurized gas from the venting manifold. The pressure transducer is located near the output port. The pressure transducer is configured to read a pressure of a gas near the output port. The controller is adapted to receive information about the pressure and activate the venting valve. When the information received from the pressure transducer indicates a fault condition, the controller directs the venting valve to open.

A diagnostic method for a gas supply system includes: determining a desired ramp rate for filling a vessel from a supply of compressed gas; monitoring the actual pressure of gas entering the vessel; and discontinuing the flow of gas into the vessel when the actual pressure deviates from the intended pressure at the desired ramp rate by an undesired amount. A system for carrying out the method includes a flow controller for controlling operation of the supply system to deliver compressed gas from a source to a vessel through a supply line at a desired ramp rate. The system employs a pressure monitor downstream of a control valve for measuring the pressure of gas directed into the vessel and transmitting pressure-related data to the flow controller, which closes the control valve to discontinue filling of the vessel if the actual pressure exceeds a permissible deviation from the intended pressure.

A pressure capsule embedded in a pacemaker lead to monitor intracardiac chamber pressure is described. This pressure monitor capsule provides highly accurate pressure readings while insuring a high integrity seal against bodily fluids and tissue growth. The capsule is intended to be embedded into a pacemaker cardiac lead or a catheter with the distal (Tip) isolation diaphragm sensing pressure, coupling the pressure through an air column to a protected sensing MEMS device and providing a secure fluid seal to the lead walls. The proximal (Back) end of the capsule provides the electrical interface through the lead to the pacemaker pulse generator.

A tubing hanger and wellhead have features for controlling and monitoring fluid pressure to downhole equipment. The tubing hanger has an internal vertical passage. A hydraulic line connects to the lower end of the vertical passage and runs downhole. The vertical passage communicates with a lateral passage through the outer wall of the hanger. A lateral passage through the wellhead housing is generally aligned with the lateral passage of the hanger when the hanger is installed in the wellhead housing. A pressure shaft is installed in the wellhead passage and has a passage therethrough. A seal member having spherical ends is inserted between spherical receptacles located on the inner end of the pressure shaft passage and on the outer end of the lateral passage of the hanger. The seal member has an internal passage having a flared inner end. The seal member is allowed to rotate to sealingly connect the lateral passages if some misalignment of the lateral passages exists. A gage or other pressure monitoring device or a source of hydraulic pressure can be attached to the outer end of the pressure shaft to communicate with the shaft passage.

A diagnostic system detects abnormal physical properties of tissue in a patient based upon optical properties of the tissue. A probe includes light delivery and capture fibers, and polarizers. Optical properties detected relate to polarized and unpolarized light into, and scattering from, the tissue. The optical properties detected are processed and analyzed to produce results indicative of the physical property(s) evaluated. System operation is controlled against pressure monitored via a pressure sensor coupled to the probe-tissue interface. The analysis corrects for patient physical characteristics as user inputs, such as menopausal or menstrual condition of women patients. Physical properties diagnosed include cervical dysplasia conditions in women patients, such as HSIL, cervical cancer, LSIL, or cervicitis. Analysis and diagnosis is based upon at least one of: ratios between scattered light signals captured from the tissue, slope of intensity over wavelength for scattered light signals captured, and hemoglobin-related parameters in the tissue.

A warning device configured for removable mounting in combination with a high pressure gas cylinder and a regulator used to regulate the high pressure gas supplied by the cylinder. The device compression mounts between the regulator and tank outlet on conventional portable oxygen and gas supply systems using a specially configured manifold. The device features one or a combination of alarms, from a group including audio, visual, electronic, and remotely transmitted alarms. These alarms are activated by a pressure switch monitoring the remaining supply in the gas cylinder through a conduit the manifold. The alarm signal from the device alerts the user, or a third party monitoring the user, of current tank pressure or will sound an alarm when remaining high pressure gas inside the gas cylinder drops below a predetermined level.

A system and method for the intra corporal, measuring of blood pressure includes a substantially rigid sensor structure and an antenna structure, which are separate components. The anchor structure is used to mount the within an appropriate location in the cardiovascular system, such as in the cardiac septum. The substantially rigid sensor structure includes at least one capacitive pressure sensor. Measured values are transmitted telemetrically from the sensor structure to an extra corporal monitoring device.

An implanted medical device may detect the onset of impaired glucose tolerance or Type II diabetes. The implanted medical device may have additional functionality. For example, the implanted medical device may be a pacemaker or a pressure monitor, but may also monitor insulin-mediated glucose uptake by processing electrical signals from the heart. An implanted medical device that monitors insulin-mediated glucose uptake may be implanted in a patient who has not been diagnosed with impaired glucose tolerance or Type II diabetes, and may give the patient early warning if these conditions develop.

A method and apparatus for controlling a fluid distribution regulator disposed in a fluid distribution system in which an intelligent controller is operatively connected to at least one fluid district regulator for controlling the district regulator. At least one intelligent low-pressure monitor is connected to the distribution system at a distance from the fluid district regulator and monitors ambient temperature and fluid pressure in the distribution system. A computer is operatively connected to the intelligent controller and the intelligent monitor and provides status checks and manual overrides of the intelligent controller and the intelligent monitor. An adaptive algorithm proximate the intelligent controller generates a prediction of fluid demand and a corresponding district regulator fluid outlet pressure setting based upon feedback from the intelligent monitor.

Provided is a tire air pressure monitoring device capable of accurately determining the wheel position of a transmitter. The tire air pressure monitoring device comprises: a transmitter installed on each wheel for transmitting detected air pressure information via a wireless signal; a rotational position detection mechanism disposed on the vehicle body side which detects the rotational position of each wheel and also outputs rotational position information to a communications line at prescribed time intervals; and a vehicle body side rotation position estimation mechanism that estimates the rotational position (i.e., number of teeth) at the time of transmission by the transmitters, on the basis of the reception information for the wireless signal from the transmitters and the rotation position information for the wheels input via the communications line.

The present invention provides a system and method for anti-theft and tracking of automobile and automobile wheels. The system comprises of an alert and tracking device (105) installed on the inside of an air stem of a wheel along with tyre pressure monitor system (TPMS), wherein the alert and tracking device (105) detects and alerts of theft when there is an unauthorized movement such as lifting, tampering, removal of the wheel and also tracks and monitors the position of the stolen wheel. The system further comprises of a remote tracking application (111) to control and track the stolen wheel from the remote location.

A low cost particulate filter pressure monitoring system and method are presented. The differential pressure across the filter is estimated based on an atmospheric pressure, a measured absolute exhaust gas pressure upstream of the first emission control device coupled to the engine and an estimated pressure drop across all other emission control devices.

An apparatus is provided for monitoring the fluidic contents of a tank. The tank includes a quick disconnect valve and an assembly includes a monitor device, such as, for example, a gas density monitor, a pressure monitor, a temperature monitor, etc., and a quick disconnect fitting. The monitor device is coupled to the quick disconnect fitting. The quick disconnect fitting is adapted to couple to the quick disconnect valve such that the interior of the quick disconnect fitting is in fluidic communication with the interior of the monitor device for reducing the chance of leakage upon connection / disconnection.