152 results about "Mechanical ventilation" patented technology

Methods, systems and devices are described for new modes of ventilation in which specific lung areas are ventilated with an indwelling trans-tracheobronchial catheter for the purpose of improving ventilation and reducing hyperinflation in that specific lung area, and for redistributing inspired air to other healthier lung areas, for treating respiratory disorders such as COPD, ARDS, SARS, CF, and TB. Trans-Tracheobronchial Segmental Ventilation (TTSV) is performed on either a naturally breathing or a mechanical ventilated patient by placing a uniquely configured indwelling catheter into a bronchus of a poorly ventilated specific lung area and providing direct ventilation to that area. The catheter can be left in place for extended periods without clinician attendance or vigilance. Ventilation includes delivery of respiratory gases, therapuetic gases or agents and evacuation of stagnant gases, mixed gases or waste fluids. Typically the catheter's distal tip is anchored without occluding the bronchus but optionally may intermittently or continuously occlude the bronchus. TTSV is optionally performed by insufflation only of the area, or by application of vacuum to the area, can include elevating or reducing the pressure in the targeted area to facilitate stagnant gas removal, or can include blocking the area to divert inspired gas to better functioning areas.

This disclosure describes systems and methods for detecting and quantifying transmission delays associated with distributed sensing and monitoring functions within a ventilatory system. Specifically, the present methods and systems described herein define an event-based delay detection algorithm for determining transmission delays between distributed signal measurement and processing subsystems and a central platform that receives data from these subsystems. It is important to evaluate and quantify transmission delays because dyssynchrony in data communication may result in the misalignment of visualization and monitoring systems or instability in closed-loop control systems. Generally, embodiments described herein seek to quantify transmission delays by selecting a ventilator-based defining event as a temporal baseline and calculating the delay between the inception of the defining event and the receipt of data regarding the defining event from one or more distributed sensing devices.

A device and method to dissolve or eliminate blood clots from a patient relies upon a non-rapid moving mechanism to physically dissolve clots without damaging endothelium of the arteries and veins of a patient. In one embodiment, in addition to mechanical agitation of a clot, a thrombolytic agent is administered simultaneously with such agitation. Preferably, intermittent agitation is utilized over a prolonged period of time to effectuate clot removal.

A device and method is disclosed for delivering NO to a patient. The device utilizes a single controller that controls two separate flow controllers to deliver an oxygen-containing gas and a NO-containing gas to the patient. The flow profiles of the oxygen-containing gas and the NO-containing gas are controlled by the controller. In one aspect of the invention, the flow profile of the NO-containing gas is proportional to the flow profile of the oxygen-containing gas throughout patient inspiration. In this regard, the patient receives a steady concentration of NO. In another aspect of the invention, the flow profile of the NO-containing gas is quasi-proportional to the flow profile of the oxygen-containing gas. In this regard, the NO-containing gas flow profile is altered to provide an increased concentration of NO either at the beginning or end of inspiration. In one aspect, the delivery device is used with mechanically-ventilated patients. In the other aspect of the delivery device, the device is used with spontaneously-breathing patients. The device and method, in a preferred embodiment, further contemplates using a gas purge or air flush feature to remove enriched-oxygen and/or NO from the device.

Devices and methods for tissue treatment produce a mechanical stimulation therapy and electromagnetic field therapy. The mechanical stimulation therapy provides stimulation of blood circulation and stimulates treated cells. The electromagnetic field enables thermal treatment of tissue. Combination of both therapies improves soft tissue treatment, mainly connective tissue in the skin area and fat reduction.

An aerosol delivery system is disclosed that is a single-use (disposable) continuous nebulizer system designed for use with mechanically ventilated patients to aerosolize medications for inhalation with a general purpose nebulizer, or for connection with devices usable in endoscopic procedures. The system separates the liquid reservoir from the nebulization process taking place either at the adapter hub, where it fits into an endotracheal tube (ETT), or a gas humidifier, where the aerosol may treat a gas used in an endoscopic procedure, with a multi-lumen tube configured to nebulize liquid and air at its distal end. The refillable liquid reservoir is mounted away from the immediate treatment zone, avoiding orientation issues associated with other types of nebulizers having a self-contained reservoir. The system can produce aerosols having a wide range of droplet sizes, depending upon central lumen diameter, with values of MMAD that range from 4 to 30 μm.

The invention provides a radial ventilation cooling structure of a motor. The radial ventilation cooling structure for the motor comprises at least three iron core sections, wherein ventilation channel steel is arranged between every two adjacent iron core sections; a ventilating duct is formed between every two adjacent iron core sections and the ventilation channel steel; the impedance of the multiple ventilating ducts is gradually increased along two ends of the motor to the middle direction of the motor. According to the radial ventilation cooling structure of the motor, provided by the invention, the impedance of the multiple ventilating ducts is gradually increased along the two ends of the motor to the middle direction of the motor, so that the balance of the flow of wind flowing through the multiple ventilating ducts can be improved, and further the balance that the temperatures, along the axial direction of the motor, of a coil and the multiple iron core sections are distributed is improved; under the condition that total flow of the wind is unchanged, a maximum temperature value is reduced, and motor shutdown caused by overhigh local temperature rising is effectively avoided; meanwhile, thermal deformation of an iron core bracket is reduced, and normal operation of the motor is guaranteed.

Devices and methods for tissue treatment produce a mechanical stimulation therapy and electromagnetic field therapy. The mechanical stimulation therapy provides stimulation of blood circulation and stimulates treated cells. The electromagnetic field enables thermal treatment of tissue. Combination of both therapies improves soft tissue treatment, mainly connective tissue in the skin area and fat reduction.

A joystick control device having cursor correcting function, in which the conventional adjustable resistor is replaced by a photoelectric element for detecting the movement of the joystick, thereby eliminates the ill effects caused by mechanical attrition of resistor. Additionally, the parameter drifts caused by IC manufacturing processes are corrected using shift correction of joystick; therefore, every individual mass-produced IC shows similar good behavior.

In a method, ventilator and ventilator control unit for determining an end-expertorial lung volume (EELV) for a mechanically ventilated patient, a breathing gas is provided to the patient that has a first fixed N2/O2 gas composition, at least until the N2/O2 gas composition in air expired from the patient is constant. At least once, at a first predetermined point in time, the N2/O2 gas composition in the breathing gas is changed to a second fixed composition. The change in the N2/O2 gas composition exhaled by the patient for each breath is measured until a second point in time at which the level of expired O₂ in at least two subsequent breadths is substantially stable. The measurement is made downstream of the expiratory tube of the ventilator. The total gas volume is determined for each breath, and the EELV of the patient's lungs is determined based on the change in O₂ level between the first and second points in time.

The present invention is related to an fishing lure (10) having a mechanically-actuated tone generation device (15, 25) which produces one or more lower frequency tones alone. Additionally, the tone generation device (15, 25) may also generate a higher frequency tone through mechanical actuation (15, 50) and/or may be combined with a separate mechanically-actuated higher frequency tone generation device (1185).

A diagnostic device is disclosed for characterisation of particles from a patient's airways, such as a lung, when ventilated by a ventilator, and/or for control thereof, comprising a particle detecting unit configured to be connected to a conduit for passing expiration fluid from said patient, for obtaining data related to particles being exhaled from said patient's airways.

An apparatus for mechanically ventilating a patient is provided to have two separate components movably arranged with respect to one another within a flexible, air-tight covering fit about the torso of a patient. When the components move away from one another within the air-tight covering, negative pressure is generated which causes the patient to draw air into the lungs. Conversely, when the components stop moving away from one another within the air-tight covering, the patient's natural exhalation recoil takes over to allow the patient to expel the air from within the patient's lungs.

The invention discloses a micro-fluid control device capable of simultaneously exerting mechanical stimulation and chemical stimulation. The micro-fluid control device is applied to in-vitro simulation of atherosclerosis and comprises a micro-fluid control chip, a cell culture driving system and a negative pressure generator, wherein the cell culture driving system is connected with the micro-fluid control chip so as to drive liquid in a micro-fluid control channel of the micro-fluid control chip to flow; and the negative pressure generator is connected with the micro-fluid control chip so as to generate a negative pressure. By utilizing the device, the influence of the mechanical stimulation and chemical stimulation on vascular endothelial cells in blood vessels can be simulated, so as to research the occurrence and the development of the atherosclerosis and further carry out drug screening and exploration of therapeutic methods.

A method and apparatus for high-throughput micro-cell culture with mechanical stimulation is disclosed. In one embodiment, the apparatus includes a cell culture vessel and a fluid pressure supply unit. The cell culture vessel has a membrane, a culture medium chamber, and a pressure chamber; and the fluid pressure supply unit that has a fluid pressure supply device and a control device is connected fluidly to the pressure chamber. When the fluid pressure in the pressure chamber changes, the membrane vibrates accordingly to generate a mechanical stimulation to the cultured cells in a controllable manner. In another embodiment, the control device can be an electro-magnetic valve.

A breathing circuit for use in conjunction with a ventilator serving a mechanically-ventilated patient includes an expiratory gas airflow pathway; an inspiratory gas airflow pathway; and a gas mixing mechanism operable to mix inspiratory gas and expiratory gas in an amount sufficient to equilibrate the patient's PETCO₂ and arterial PCO₂ such that the patient's PETCO₂ is a clinically reliable approximation of the patient's PaCO₂.

In accordance with the present invention, there is provided a mask for achieving positive pressure mechanical ventilation (inclusive of CPAP, ventilator support, critical care ventilation, emergency applications), and a method for a operating a ventilation system including such mask. The mask of the present invention includes a piloted exhalation valve that is used to achieve the target pressures/flows to the patient. The pilot for the valve may be pneumatic and driven from the gas supply tubing from the ventilator. The pilot may also be a preset pressure derived in the mask, a separate pneumatic line from the ventilator, or an electro-mechanical control. Additionally, the valve can be implemented with a diaphragm or with a flapper.

Disclosed is a grain storing mechanism venting intelligent management control system and the method for control thereof. The system comprises a computer for storing, PLC storehouse roof axial flown fan control system, PLC centrifugal flown fan control system which are connected on the RS232-RS422 converter; the computer is connected to the grain situation detecting system; the PLC storehouse roof axial flown fan control system is connected with storehouse roof axial flown fan and the LC centrifugal flown fan control system is connected with storehouse ground centrifugal flow fan. The function of the management control software is realizing automatic control of the venting process of the storehouse and recording the grain situation changes.

This invention provides method to trigger breathing machine to work by EMG comprised steps: (1) collecting EMG signal; (2) obtaining diaphragmatic muscle EMG signal from band-pass filter; (3) calculating the root-mean-square value and collecting corresponding envelope; (4) computing the slope S by linear fitting for every 50ms and the mean value M for the envelope curve within 50ms; (5) determining the slope critical value C and base line threshold T; comparing S, M, C and T on different interval, and sending trigger signal. The invention can improve synchronism between human and machine, decrease the use of dope and muscle-release agent, and the cost.

An oral care appliance using a jet-type fluid flow And mechanical action An oral care appliance comprises: a gas-liquid cleaning assembly which includes a fluid flow pump assembly (46); a source of liquid (50); and a source of gas (12). The pump assembly is in operative communication with the sources of fluid and gas to produce a jet pattern of gas-injected fluid slugs, directed to a nozzle assembly (80) from which the resulting slugs are directed to the teeth, wherein the individual fluid slugs in the jet flow have a volume in the range of 0.05-0.5 ml per orifice, a diameter in the range of 0.1-2 mm and a repetition rate within the range of 2 Hz to 20 Hz. The appliance further includes a mechanical teeth cleaning assembly, in combination with the gas-liquid assembly, which includes a drive system (160) and a brush assembly in operative contact with the drive system, the brush assembly having a set of bristles (152) at the distal end thereof, wherein in operation, the nozzle assembly is positioned within the brush assembly.

A simulated weapon or firearm is provided that is formed with a mechanical operating or firing mechanism similar to that of an actual firearm. The firing mechanism is formed with components found in an actual firearm that are interconnected with components of an electronic mechanism that can monitor and control the mechanical operation of the simulated firearm. This allows for the mechanical operating mechanism to function in a manner similar to that of an actual firearm, while the electronic mechanism can introduce various mechanical failures that do not otherwise occur in the electronics-only operating mechanisms of prior simulated firearms. In addition, the operational cycles of the mechanical and electronic mechanisms are synchronized to provide a highly realistic feel to the simulated weapon.