607 results about "Breathing system" patented technology

The present invention provides a foamable composition for administration to the skin, body surface, body cavity or mucosal surface, e.g., the mucosa of the nose, mouth, eye, ear, respiratory system, vagina or rectum. The foamable oil in water emulsion composition includes: an oil globule system, selected from the group consisting of oil bodies; and sub-micron oil globules, about 0.1% to about 5% by weight of an agent, selected from the group consisting of a surface-active agent, having an HLB value between 9 and 16; and a polymeric agent, and a liquefied or compressed gas propellant at a concentration of about 3% to about 25% by weight of the total composition, water and optional ingredients are added to complete the total mass to 100%. Upon release from an aerosol container, the foamable composition forms and expanded foam suitable for topical administration.

A pulmocardiac assistance apparatus is disclosed for use in the medical technology field to provide expiratory and inspiratory functionality to patients with respiratory disorders. The pulmocardiac assistance device of the present invention functions to collect body response feedback and manages this feedback to achieve an optimum response. The device includes an integrated set of pressure cuffs for pressuring different parts of the body in accordance with a predetermined sequence to induce the patient to breathe out or expire air from the lungs or to even produce an assisted cough, as well as to promote circulation of blood from the extremities of the body to the head. The pulmocardiac assistance device further includes a programmable logic controller which accepts inputs from sensors (e.g. patient temperature, blood gas concentrations, arterial pH level) and makes calculations to control both ventilator and pressure cuffs.

A method and an apparatus for monitoring and controlling flows in medical equipment including an anesthetic machine and a ventilator for influencing a patient's respiratory system are disclosed. The apparatus comprises a microprocessor and an airway system comprising drive gas conduits provided with an inhalation valve (2) and an exhalation valve (5) for gas discharging as well as a ventilator end flow sensor (3) for measuring the introduced or discharged drive gas flow through the valves. The airway system also comprises patient end breathing tubing in which a patient end flow sensor (11) for measuring the patient's inspired and expired gas flow is provided. By comparing the measured values of the two flow sensors against the characteristic curve of the inhalation valve (2), the microprocessor can judge the operation states and accuracy of the respective flow sensors and the inhalation valve (2).

A patient breathing system includes a ventilator that provides a driving gas flow to generate patient inspiration. The ventilator further includes a gas inlet for driving gas, the patient breathing system being connectable to a circle which includes an inspiratory hose and an expiratory hose connected to patient, through which circle expired gases can be circulated back to the patient. The circle further includes a fresh gas inlet, an arrangement for enabling the gas flow in a desired direction, a unit for removal of the exhaled carbon dioxide, and a ventilator port for the ventilator connection. The patient breathing system further includes an arrangement by which driving gas of the ventilator has been separated from the patient gases flowing in the circle.

A method of automatically controlling a respiration system for proportional assist ventilation with a control device and with a ventilator. An electrical signal is recorded by electromyography with electrodes on the chest in order to obtain a signal u_emg(t) representing the breathing activity. The respiratory muscle pressure p_mus(t) is determined by calculating it in the control unit from measured values for the airway pressure and the volume flow Flow(t) as well as the patient's lung mechanical parameters. The breathing activity signal u_emg(t) is transformed by means of a preset transformation rule into a pressure signal p_emg(u_emg)(t)) such that the mean deviation of the resulting transformed pressure signal p_emg(t) from the respiratory muscle pressure p_mus(t) is minimized. The respiratory effort pressure p_pat(t) is determined as a weighted mean according to p_pat(t)=a·p_mus(t)+(1−a)·p_emg(t), where a is a parameter selected under the boundary condition 0≦a≦1. The airway pressure p_aw(t) to be delivered is calculated as a function of preselected degrees of assist VA (Volume Assist) and FA (Flow Assist) by sliding adaptation as

wherein t_i is a current point in time and t_i−j, wherein j=1, . . . , n, are previous points in time of a periodical time-discrete sampling, and k_j and h_j, wherein j=1, . . . , n are parameters dependent on resistance (R), elastance (E), positive end-expiratory pressure (PEEP), intrinsic PEEP (iPEEP), Volume Assist (VA) and Flow Assist (FA) and the sampling time Δt, and the ventilator is set by the control unit so as to provide this airway pressure p_aw(t_i)

Method and apparatus are described for determining respiratory system resistance (R) in a patient receiving gas from a ventilator. A negative pulse in the pressure and/or flow output of the ventilator during selected inflation cycles is generated and Paw, V dot and V are measured at a point (T0) near the beginning of the pulse, at a point (T1) near the trough of the negative pulse and at a point (T-1) preceding T0. The value of R is calculated from the difference between Paw. V dot and V at TO and at TI and where the change in patient generated pressure (Pmus) in the interval TO-TI is estimated by extrapolation from the different between Paw, V dot and V and T0 and at T-I, in accordance with Equation 8.

Described is system and method of monitoring respiratory airflow and oxygen concentration. The system may include a first sensor producing data corresponding to an airflow in a respiratory system of a body; a second sensor producing data corresponding to an oxygen concentration in the body; a generator supplying a pressurized airflow; an oxygen source supplying oxygen; a conduit through which the pressurized airflow and oxygen are delivered to the respiratory system; and a processing arrangement for processing the data from the first and second sensors and for controlling the generator and the oxygen source based on the processed data.

An instrument for non-invasively measuring nanoparticle exposure includes a corona discharge element generating ions to effect unipolar diffusion charging of an aerosol, followed by an ion trap for removing excess ions and a portion of the charged particles with electrical mobilities above a threshold. Downstream, an electrically conductive HEPA filter or other collecting element accumulates the charged particles and provides the resultant current to an electrometer amplifier. The instrument is tunable to alter the electrometer amplifier output toward closer correspondence with a selected function describing particle behavior, e.g. nanoparticle deposition in a selected region of the respiratory system. Tuning entails adjusting voltages applied to one or more of the ion trap, the corona discharge element and the collecting element. Alternatively, tuning involves adjusting the aerosol flow rate, either directly or in comparison to the flow rate of a gas conducting the ions toward merger with the aerosol.

A method and apparatus for facilitating breathing using a mechanical breathing gas ventilator is presented. The patient effort is deduced from a measured flow signal and analyzed with respect to the energy in the breathing system comprising the mechanical ventilator and the patient. When a predetermined energy threshold has been reached the ventilator responds to the breathing pattern change.

An apparatus assesses a condition of a patient. The apparatus may contain a patient interface for communicating a treatment generated by a respiratory treatment apparatus to the respiratory system of a patient. The apparatus may also include a sensing module containing one or more electrochemical sensors to sense chemicals in exhaled breath in real time, or over an extended period of time. The apparatus may also include one or more collectors to accumulate a breath condensate over an extended period of time. The sample collectors may contain an absorbent material, and may also be adapted for replacement within a sensing module. The absorbent material may also include a preservative for preserving a chemical component of the breath, such as an analyte of the exhaled breath. The technology may provide treatment recommendations based on the detected condition of the breath condensate or the chemical components thereof.

The invention relates to a medicine absorber, in particular to a medical micropore atomization medicine absorber. The medical micropore medicine absorber comprises a main body, the main body is provided with a medicine water box and a circuit device, the medicine water box is internally provided with a micropore piezoelectric ceramic atomization slice, the micropore piezoelectric ceramic atomization slice is connected with atomization control board in the circuit device, and the micropore piezoelectric ceramic atomization slice generates high frequency oscillation action under the control of the atomization control board, so that medicine water connected with the micropore piezoelectric ceramic atomization slice is absorbed by patients after the medicine water is vibrated out from the micropore on the micropore piezoelectric ceramic atomization slice to form fog. The invention can atomize the medicine water into fog with particle diameter in certain range and cause the fog to be absorbed by capillary of the breathing system via choke, trachea, bronchus and lung and then enter the blood circulatory system. The invention is mainly used for critical patients, comatose people and infant as well as patients unwilling to accept and unable to continuously accept drug administration in oral intake, injection and drop ways.

An anesthetic breathing apparatus has a breathing circuit having an inspiratory gas output port and an expiratory gas input port, and a control unit that sets the anesthetic breathing apparatus selectively in a first mode of operation to provide inspiratory gas, fresh gas and/or breathing gas recirculated in said breathing circuit, via said inspiratory gas output port, enable recirculation into said breathing circuit and/or evacuation via the expiratory input port for manual or mechanical ventilation by said anesthetic breathing apparatus. The control unit is also able to set the anesthetic breathing apparatus selectively in a second mode of operation to provide a flow of fresh gas via a fresh gas output port to an external breathing system connected thereto, disable recirculation and/or evacuation via the expiratory input port. An exhaust of the breathing circuit is connected to a gas input port of the anesthetic breathing apparatus for gas scavenging via said anesthetic breathing apparatus.

A system and method of calculating an accurate estimate of pulmonary mechanics of a patient, including but not limited to compliance, resistance, and plateau pressure without modification of ventilator flow pattern. The accurate estimation of pulmonary mechanics is derived from airway pressure and flow sensors attached to the patient using novel mathematical models. These estimated figures for pulmonary mechanics (respiratory system compliance and resistance) are important for monitoring patient treatment efficacy during mechanical ventilation and ensuring alveoli do not over distend to avoid baro- and/or volutrauma, especially in patients with restrictive lung diseases. The subject method of calculating these accurate estimated figures for pulmonary mechanics is based on linear or non-linear calculations using multiple parameters derived from the above-mentioned sensors.

Systems and methods assist with managing a chronic disease of a user such as a chronic respiratory or cardiac disease. The system may include a physiological monitor adapted to be carried by the user and operative to sense a physiological parameter of the user. The system may include a management device operatively coupled with the physiological monitor to receive the sensed physiological parameter of the user. The management device, such as with an included processor, may be configured to analyze the physiological and/or environmental parameters to detect a trigger pattern of the parameters, the trigger pattern indicative of a probable event of exacerbation of the chronic respiratory and/or cardiac condition. The management device may then generate automated responses based on the trigger pattern such as by providing instructions for activities and/or treatment for the chronic condition.

The demand regulator has a duct communicating a pressurized breathing gas admission with a tube connected to the inside of a breathing mask. Dilution air may be added to the breathing gas. A breathe-out valve opens from the tube to atmosphere. A manual control member has a normal position causing operation without an over pressure above atmosphere and with dilution and an emergency position causing the tube to be fed with pure breathing gas (typically oxygen) at high pressure. Operation with over pressure gas feed is prevented mechanically or pneumatically so long as the mask is being stored.

A breathing system for hyperthermic assisted radiation therapy includes at least one heating element that modulates the temperature of air inhaled by a patient, at least one cooling element that modulates the humidity of the air inhaled by a patient, and a controller that maintains the desired humidity and temperature.

The invention relates to a respiratory system comprising a first patient interface for delivery of a first flow of gases to a patient, a second patient interface for delivery of a second flow of gases to the patient, and a device and/or sensing arrangement that is configure to facilitate a switching of the system between a first respiratory mode where the device allowing delivery of the first flow of gases to an outlet of the first patient interface when the second patient interface is absent from the patient, and a second respiratory mode where the device reducing or stopping delivery of the first flow of gases to the outlet of the first patient interface when the second patient interface is located together with the first patient interface upon the patient.

The present claim enables a breathing system to be assessed with a minimum of attention or experience regardless of type of breathing system. This is achieved by creating an electronic control system for the breathing system which converts all available parameters which affect the ongoing use of the breathing system and converting those parameters in a common basis of time remaining of practical use on the breathing system. The electronic system then combines the common parameters in time and combines as appropriate to produce a single time remaining parameter pertaining to the breathing machine operation. This approach is applied across rebreather and open circuit, land and water based systems such that an operator may use similar skills to interpret the output indications of different types of machines.