30 results about "Lung pressure" patented technology

Apparatus, methods, and kits, are provided for use in combination with a conventional bronchoscope or other lung viewing scope. In particular, sheaths having an inflatable cuff at their distal end are provided to receive a viewing scope through a lumen thereof. The sheaths thus provide an inflatable cuff on a viewing scope assembly so that the scope can be used in procedures which require selective isolation of regions of a patient's lungs. In particular embodiments, the sheaths may include stop elements for properly positioning a viewing scope therein, pressure transducers for providing accurate lung pressure information during procedures, and the like. Methods for using and forming sheaths having inflatable cuffs are also described.

A ventilator for ventilating a patient also assists a clinician in determining a suitable PEEP for the patient. For this purpose, a graph or tabular display of a series of different value PEEPs and corresponding functional residual capacities of the patient may be provided. Or, the relationship between lung compliance and a series of different values of PEEP may be provided. Or, the amount of the lung volume recruited/de-recruited at various levels of PEEP may be determined for use in selecting a desired PEEP. To this end, the functional residual capacity of the lungs is determined for a first PEEP level. The PEEP is then altered to a second level and a spirometry dynostatic curve of lung volume and pressure data is obtained. The lung volume on the dynostatic curve at a lung pressure corresponding to the first PEEP value is obtained. The difference between the functional residual capacity of the lungs at the first PEEP level and that determined from the dynostatic curve represents the lung volume recruited/de-recruited when changing between said first and second PEEPs.

A ventilator for ventilating a patient also assists a clinician in determining a suitable PEEP for the patient. For this purpose, a graph or tabular display of a series of different value PEEPs and corresponding functional residual capacities of the patient may be provided. Or, the amount of the lung volume recruited/de-recruited at various levels of PEEP may be determined for use in selecting a desired PEEP. To this end, the functional residual capacity of the lungs is determined for a first PEEP level. The PEEP is then altered to a second level and a spirometry dynostatic curve of lung volume and pressure data is obtained. The lung volume on the dynostatic curve at a lung pressure corresponding to the first PEEP value is obtained. The difference between the functional residual capacity of the lungs at the first PEEP level and that determined from the dynostatic curve represents the lung volume recruited/de-recruited when changing between said first and second PEEPs.

A ventilator for ventilating a patient also assists a clinician in determining a suitable PEEP for the patient. For this purpose, a graph or tabular display of a series of different value PEEPs and corresponding functional residual capacities of the patient may be provided. Or, the relationship between lung compliance and a series of different values of PEEP may be provided. Or, the amount of the lung volume recruited/de-recruited at various levels of PEEP may be determined for use in selecting a desired PEEP. To this end, the functional residual capacity of the lungs is determined for a first PEEP level. The PEEP is then altered to a second level and a spirometry dynostatic curve of lung volume and pressure data is obtained. The lung volume on the dynostatic curve at a lung pressure corresponding to the first PEEP value is obtained. The difference between the functional residual capacity of the lungs at the first PEEP level and that determined from the dynostatic curve represents the lung volume recruited/de-recruited when changing between said first and second PEEPs.

Systems and methods may include a gas source, a gas delivery circuit, and a nasal interface allowing breathing ambient air through the nasal interface. A gas flow path through the nasal interface may have a distal gas flow path opening. A nozzle may be associated with a proximal end of the nasal interface a distance from the distal end gas flow path opening. At least a portion of an entrainment port may be between the nozzle and the distal end gas flow opening. The nozzle may deliver gas into the nasal interface to create a negative pressure area in the gas flow path at the entrainment port. The nasal interface and the nozzle may create a positive pressure area between the entrainment port and the distal end gas flow path opening. Gas from the gas delivery source and air entrained through the entrainment port may increase airway pressure or lung pressure or provide ventilatory support.

A system for providing ventilation support to a patient may include a ventilator, a control unit, a gas delivery circuit with a proximal end in fluid communication with the ventilator and a distal end in fluid communication with a nasal interface, and a nasal interface. The nasal interface may include at least one jet nozzle at the distal end of the gas delivery circuit; and at least one spontaneous respiration sensor for detecting respiration in communication with the control unit. The system may be open to ambient. The control unit may receive signals from the at least one spontaneous respiration sensor and determine gas delivery requirements. The ventilator may deliver gas at a velocity to entrain ambient air and increase lung volume or lung pressure above spontaneously breathing levels to assist in work of breathing, and deliver ventilation gas in a cyclical delivery pattern synchronized with a spontaneous breathing pattern.

A non-invasive ventilation system may include an interface. The interface may include at least one gas delivery jet nozzle adapted to be positioned in free space and aligned to directly deliver ventilation gas into an entrance of a nose. The at least one gas delivery jet nozzle may be connected to a pressurized gas supply. The ventilation gas may entrain ambient air to elevate lung pressure, elevate lung volume, decrease the work of breathing or increase airway pressure, and wherein the ventilation gas is delivered in synchrony with phases of breathing. A support for the at least one gas delivery jet nozzle may be provided. A breath sensor may be in close proximity to the entrance of the nose. A patient may spontaneous breathe ambient air through the nose without being impeded by the interface.

Respiratory support and/or controlled mechanical ventilation of a patient are provided. A ventilation apparatus may include a ventilator, a transtracheal prosthesis, and a respiratory relief device. The transtracheal prostheses and ventilation catheter may be arranged such that the patient can breathe freely through the upper airway and/or the tracheal prostheses. Respiratory sensors may measure a breathing rate, lung pressure, airway pressure, or a combination thereof. Pulses of gas may be provided to the patient through the ventilation catheter during inspiration. The pulses may have a first volume while the patient breathes normal and a second volume when the sensors detect a cessation of breathing or reduction in breathing volume. The second volume may be provided at 1-5 times the normal breathing rate, with a volume 25-500% times the first volume, or both.

A system and method for monitoring resuscitation and respiratory mechanics of a patient is provided. A pressure sensor detects air pressure within an air-flow path of a resuscitator and generates a first detection signal in response thereto. A flow-rate sensor detects the flow-rate within the air-flow path and generates a second detection signal In response thereto. A processor receives and processes the first and second detection signals using an algorithm to identify a ventilation rate, a lung pressure, and an air volume corresponding to the respiratory air. A report is generated of real-time feedback about respiration of the patient that includes the ventilation rate, lung pressure, and air volume.

A method for measuring lung collapse and for providing information regarding recruitment and successfulness of actions taken to recruit the lung is provided. Alveolar- and proximal pressures are determined at different lung pressures or volumes. Patient airway resistance is calculated combining these measurements with flow measurement. Plotting the resistance against the lung pressure or volume gives a within-breath distribution of the resistance. Increase of this resistance at end-expiration volume or pressure indicates lung collapse.

The invention relates to providing novel functions to the double lumen breathing circuits and coaxial breathing circuits which at present do not comprise water traps, by adding a closed system water trap designed to have an inkwell shape and a lung pressure measurement port to said circuits wherein the fluid collected in the bottle section can be discharged without having to open the bottle by means of a drainage luer port located at the base of the bottle and a needleless apparatus that has been inserted into the port, and an injector.

A system and method for relief of negative lung pressure during acute laryngospasm or upper airway obstruction, providing a non-toxic gas cartridge capable of supplying between 0.5-5 liters of gas during a procedure, a valve adapted to commence and stop gas release, and a trans-cricothyroid cartilage inflation needle for acutely relieving the negative pressure in the chest. The needle may also be used to insert a guidewire to assist in endotracheal tube insertion.

The invention relates to a medical breathing machine with humidifying and warming functions. The medical breathing machine comprises a controller, a humidifying and warming mechanism, an air and oxygen mixing mechanism, a frequency coordination device, an oxygen tank, an air compressor and a mask. Gas is heated through hot water in the spiral pipe, so that the heating uniformity of the gas to be introduced is improved, and the use experience of a respirator user is improved; the air-oxygen mixing proportion can be conveniently adjusted by adjusting the opening degrees of the first flow adjusting valve and the second flow adjusting valve, and the convenience of debugging and using the breathing machine is improved; reciprocating sliding of the sliding block can be simply controlled through the motor, the breathing frequency can be controlled by controlling the positive and negative rotation switching frequency of the motor, the pressure of gas to be introduced can be adjusted according to the lung pressure of a user by controlling the sliding block pushing amount, and the use convenience degree of the breathing machine is improved. And by arranging the waterproof breathable film, the use safety and reliability are improved under the condition that the gas humidification effect is guaranteed.

A method for changing the effective ventilation of a mechanically ventilated subject (3) to enable or carry out non-invasive determination of hemodynamic parameters is disclosed. The method comprisesa step of ventilating the subject using a ventilation pattern comprising at least one phase of increased ventilation and at least one phase of decreased ventilation, wherein the phase of decreased ventilation comprises at least one prolonged breath (B2; B2', B2'', B2''') including a respiratory pause (IRP). The respiratory pause is initiated when the lung pressure (Palv) of the subject is betweena minimum lung pressure and a maximum lung pressure of the subject during the prolonged breath.

The invention discloses a novel plateau nuclear biochemical protection electric air supply canister and application thereof, the novel plateau nuclear biochemical protection electric air supply canister comprises a canister body, and is characterized in that an electric air supply device is arranged in the canister body, wherein the electric air supply device comprises an upper cover, a shell, a lower cover, a motor, fan blades, an air cavity, a check ring, a power supply, a control circuit board and a switch which are connected in sequence. The canister is filter type respiratory protection equipment formed by adding a small-sized electric air supply device on the basis of a layer-mounted canister. The canister has the outstanding characteristics that the air supply device forcibly supplies air to the mask, the air flow is stable, the inspiration resistance of the mask can be greatly reduced, the lung pressure is reduced, the air inflow is improved, the personnel burden is reduced, and the physiological comfort is improved. In addition, certain positive pressure is formed in the mask through forced air supply, and the protection capacity of the mask can be further improved. And meanwhile, in low-temperature, high-temperature and high-humidity environments, a fogging phenomenon of the lens is reduced or eliminated, and the structure is favorably kept clear.