51 results about "Spontaneous respiration" patented technology

The invention relates to a method and an arrangement for reducing the volume of a patient's lung. A bronchial catheter (2) is introduced into a hyperexpanded lung area, and air is aspirated from there by means of an aspiration device (3). The associated segmental bronchus is then closed. According to the invention, the patient's spontaneous respiration is recorded by sensors (5), and aspiration of the air is carried out in synchrony with the patient's inhalation action. In order to prevent collapse of the associated segmental bronchus, a pressure generator is provided with which the associated segmental bronchus can be widened, by a compressed gas pulse, in synchrony with the aspiration. The pressure generator can be activated as a function of the aspirated air stream, which is monitored with a measuring device.

A method and apparatus is described for supporting the respiration of a patient. The spontaneous respiration of a patient can be detected by sensors and during inhalation an additional amount of oxygen can be administered to the lungs via a jet gas current. If required, during exhalation a countercurrent can be administered to avoid collapse of the respiration paths. This therapy can be realized by an apparatus including a transtracheal catheter, an oxygen pump connected to an oxygen source, spontaneous respiration sensor(s) connected to a control unit for activating the oxygen pump and, if needed, a tracheal prosthesis. The tracheal prosthesis may include a connection for the catheter and the breath sensor(s). The tracheal prosthesis, if used, and the catheter can be dimensioned so the patient can freely breathe, cough, swallow and speak without restriction, and the system can be wearable to promote mobility.

Spontaneous respiration is detected by sensors. An additional amount of oxygen is administered to the lungs via a jet gas current at the end of an inhalation procedure. Breathing volume, absorption of oxygen during inhalation, and clearance of carbon dioxide during exhalation are improved. If required, the exhalation procedure of the patient can be arrested or slowed by a countercurrent to avoid a collapse of the respiration paths. An apparatus including an oxygen pump can be connected to an oxygen source and includes a tracheal prosthesis that can be connected via a catheter. The respiration detections sensors are connected to a control unit for activating the oxygen pump. The tracheal prosthesis includes a tubular support body with a connection for the catheter, and the sensors are associated with the support body. The tracheal prosthesis and jet catheter are dimensioned so the patient can freely breathe and speak without restriction.

A system for reducing airway obstructions of 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, and at least one spontaneous respiration sensor in communication with the control unit for detecting a respiration effort pattern and a need for supporting airway patency. The system may be open to ambient. The control unit may determine more than one gas output velocities. The more than one gas output velocities may be synchronized with different parts of a spontaneous breath effort cycle, and a gas output velocity may be determined by a need for supporting airway patency.

Improved methodology and apparatus for the clinical study and treatment of sleep apnea which incorporates one or more of the following features: (1) application of mono-level, alternating high and low level, or variable positive airway pressure generally within the airway of the patient with the mono-level, high and low level, or variable airway pressure generally being coordinated with and / or responsive to the spontaneous respiration of the patient, (2) usage of adjustably programmable pressure ramp circuitry capable of producing multiple pressure ramp cycles of predetermined duration and pattern whereby the ramp cycles may be customized to accommodate the specific needs of an individual sleep apnea patient so as to ease the patient's transition from wakefulness to sleep, (3) remote control or patient-sensed operation of the apparatus, (4) employment of safety circuitry, reset circuitry and minimum system leak assurance circuitry, controls and methods, and (5) utilization of clinical control circuitry whereby sleep disorder data may be compiled and appropriate therapy implemented during a one-night sleep study.

In a method for nasal ventilation and relevant apparatus, particularly for flow-synchronized neonatal assisted ventilation, wherein F(t) is a signal proportional to the ventilation flow, the following steps are performed:(a) inspiration, having a time length Ti, during which air is introduced at an inspiration pressure;(b) expiration, having a time length Te, during which the introduction of air is interrupted;(c) return to step (a);with a flow threshold Ftr, during the expiration step (b) the following steps are provided:(b1) a waiting step having a time length γ before activation of computation of the leakages; and(b2) a step of leakage computation, having a time length δ, so that γ+δ=Te, wherein if a normalized signal F′ (t), obtained by a processing by way of an algorithm of the surveyed signal F(t), exceeds the threshold Ftr, a spontaneous respiration activity is detected and the inspiration step (a) is reactivated.

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.

The invention is relative to a method and an apparatus for supporting the respiration of a patient and to a tracheal prosthesis. According to the invention the spontaneous respiration of a patient is detected by sensors and at the end of an inhalation procedure an additional amount of oxygen is administered to the lungs via a jet gas current. This improves the absorption of oxygen during inhalation. If required, the exhalation procedure of the patient can be arrested or slowed by a countercurrent in order to avoid a collapse of the respiration paths in this manner. This procedure is realized by an apparatus comprising an oxygen pump that can be connected to an oxygen source and comprising a tracheal prosthesis that can be connected via a catheter. The spontaneous respiration of the patient is detected by sensors connected to a control unit for activating the oxygen pump. The tracheal prosthesis comprises a tubular support body with a connection for the catheter and two of the sensors are associated with the support body. The tracheal prosthesis and the jet catheter that is integrated or can be introduced are dimensioned so that the patient can freely breath and speak without restriction.

Improved methodology and apparatus for the clinical study and treatment of sleep apnea which incorporates one or more of the following features: (1) application of mono-level, alternating high and low level, or variable positive airway pressure generally within the airway of the patient with the mono-level, high and low level, or variable airway pressure generally being coordinated with and / or responsive to the spontaneous respiration of the patient, (2) usage of adjustably programmable pressure ramp circuitry capable of producing multiple pressure ramp cycles of predetermined duration and pattern whereby the ramp cycles may be customized to accommodate the specific needs of an individual sleep apnea patient so as to ease the patient's transition from wakefulness to sleep, (3) remote control or patient-sensed operation of the apparatus, (4) employment of safety circuitry, reset circuitry and minimum system leak assurance circuitry, controls and methods, and (5) utilization of clinical control circuitry whereby sleep disorder data may be compiled and appropriate therapy implemented during a one-night sleep study.

A system selectively delivers either breath-synchronized, flow-targeted ventilation (BSFTV) or closed-system positive pressure ventilation (CSPPV) to augment respiration of a patient with a standard tracheal tube. A removable adaptor has a cap that can be removably attached to the proximal connector of the tracheal tube in BSFTV mode, and an inner cannula that extends within the tracheal tube to effectively divide it into two lumens. The adaptor includes a ventilator connector for removably engaging a ventilator hose to deliver air / oxygen through the adaptor and one lumen of the tracheal tube with a flow rate varying over each respiratory cycle in a predetermined waveform synchronized with the patient's respiratory cycle to augment the patient's spontaneous respiration. The adaptor also includes a port allowing the spontaneously-breathing patient to freely inhale and exhale in open exchange with the atmosphere through the other lumen.

Systems and methods are provided for decreasing intracranial pressure and enhancing circulation in a breathing person, as well as for increasing the respiratory rate and encouraging spontaneous respiration. According to such methods, a valve system is interfaced to a person's airway. The valve system has a threshold valve and an airway member that interfaces with the person's airway. The threshold valve is configured to prevent respiratory gas flow to the person's lungs during a portion of an inhalation event until the inspiration equals or exceeds an opening pressure of the threshold valve. Also, a small level of external vacuum is constantly supplied at a juncture between the threshold valve and the airway member.

An arrangement and method for detecting spontaneous respiratory effort of a patient receiving ventilatory support via a breathing circuit. A patient / breathing circuit interface is adapted to provide a closed connection between a breathing passage of the patient and the breathing circuit. A sensor is disposed at least partially in the breathing passage of the patient and arranged to sense flow of gas through the breathing passage. The arrangement and method individually or in addition to the airway pressure measurement promotes reliable and rapid detection of breathing efforts of a non-intubated patient to promote efficient augmentation of patient breathing.

Spontaneous respiration is detected by sensors. An additional amount of oxygen is administered to the lungs via a jet gas current at the end of an inhalation procedure. Breathing volume, absorption of oxygen during inhalation, and clearance of carbon dioxide during exhalation are improved. If required, the exhalation procedure of the patient can be arrested or slowed by a countercurrent to avoid a collapse of the respiration paths. An apparatus including an oxygen pump can be connected to an oxygen source and includes a tracheal prosthesis that can be connected via a catheter. The respiration detections sensors are connected to a control unit for activating the oxygen pump. The tracheal prosthesis includes a tubular support body with a connection for the catheter, and the sensors are associated with the support body. The tracheal prosthesis and jet catheter are dimensioned so the patient can freely breathe and speak without restriction.

The invention provides a respirator system adopting compressed gas as power and a pneumatic-control operation mode without needing an external power source. The respirator system comprises a mechanical gas-feeding passage which assists a patient in breathing through a plurality of pneumatic control mechanical elements, a manual gas-feeding passage which assists the patient in breathing in a manual mode; a synchronous triggering passage which triggers the mechanical gas-feeding passage to operate so as to assist the patient in breathing when the patient is capable of spontaneous respiration; a gas source low pressure alarm passage which gives out visual and audible alarm when gas source pressure is lower than a gas source critical pressure value; and a gas duct high pressure alarm passage which gives out visual and audible alarm when gas duct pressure is higher than a gas duct critical pressure value. The respirator system adopting a pneumatic and pneumatic-control operation mode can be used in places incapable of providing electric energy such as hyperbaric oxygen chambers, airplanes, submarines and MPI environments, thereby having excellent practicability.

A mechanical ventilation device (10) includes a mechanical ventilator. At least one airway sensor (24, 26) is configured to measure at least one of airway pressure and airway air flow as a function of time for a patient on the mechanical ventilator. At least one microprocessor (28, 30) is programmed to analyze at least one of airway pressure and airway air flow measured by the airway sensor to detect a spontaneous respiration anomaly in respiratory muscle pressure as a function of time generated by a patient on the mechanical ventilator. A display component (22) is configured to display an indication of a spontaneous respiration anomaly detected by the anomaly detection component.

To safely and practically simply anesthetize fish over a long period of time in an underwater environment which contains a high concentration of carbon dioxide having an anesthetic effect. By contacting gaseous oxygen-containing microbubbles with the branchial epithelial cell membrane surface of fish, a difference between partial pressures [(partial pressure of gaseous oxygen) - (partial pressure of oxygen dissolved in branchial capillary vessels)], which is larger than a difference between partial pressures [(partial pressure of oxygen dissolved in water) - (partial pressure of oxygen dissolved in branchial capillary vessels)], is created so that the amount of oxygen taken into branchial plate capillary vessels is remarkably increased. Thus, the fish can be anesthetized with carbon dioxide over a long period of time at a water temperature (about 20 DEG C) commonly employed for handling fishes while avoiding respiratory failure that occurs during spontaneous respiratory movements suppressed by the anesthesia.

The present invention concerns a method for nasal ventilation and relevant apparatus, particularly for flow-synchronized neonatal assisted ventilation, wherein F(t) is a signal proportional to the ventilation flow, comprising the following steps: (a) inspiration, having a time length Ti, during which air is introduced at an inspiration pressure; (b) expiration, having a time length Te, during which the introduction of air is interrupted; (c) return to step (a); characterised in that it comprises a flow threshold Ftr, and in that during said expiration step (b) the following steps are provided: (b1) a waiting step having a time length ³ before the activation of the computation of the leakages; and (b2) a step of computation of the leakages, having a time length ´, so that ³+´ =Te, wherein if a normalized signal F'(t), obtained by a processing by means of an algorithm of the surveyed signal F(t), exceeds the threshold Ftr, a spontaneous respiration activity is detected and the inspiration step (a) is reactivated.

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.

The invention relates to the technical field of medical teaching aids, in particular to a cardiopulmonary resuscitation training model with spontaneous respiration after successful rescue. The cardiopulmonary resuscitation training model comprises a model body. The model body comprises a trunk model and a head model, the head model is arranged on the top of the trunk model, a model inner cavity isarranged inside the model body, a thoracic cavity model is arranged inside the model inner cavity and comprises a fixing box, telescopic rods are arranged inside the fixing box, a lifting plate is tightly welded on the tops of the telescopic rods, a top cover is arranged on the upper side of the fixing box, a rubber film is arranged in the middle of a surface of the top cover, a sponge mat is arranged between the rubber film and the lifting plate, and springs are arranged on two sides of the sponge mat. The cardiopulmonary resuscitation training model has the advantages that the cardiopulmonary resuscitation training model is simple in structure and convenient to use; the cardiopulmonary resuscitation training model with an air pump and the thoracic cavity model can have certain respiration circulation functions, and accordingly learners can thoroughly feel spontaneous respiration functions of patients after the patients revive; the learners can have obvious touch sense and pressure feedback by the aid of the springs and the sponge mat during compression, and accordingly cardiopulmonary resuscitation can be truly tested.

Respiration system for non-invasive positive-pressure respiration, with a pressure source providing respiratory gas, with a control and evaluation unit connected to sensors detecting a leakage volume, spontaneous respiration frequency, tidal volume and the inspiration time. The control and evaluation unit I) checks the leakage volume and reduces the inspiratory pressure assistance proceeding to ii) or triggers an alarm and returns to I), ii) checks the frequency and triggers an alarm and returns to I) or reduces or increases the inspiratory pressure and returns to I) or proceeds to step iii), iii) checks the volume and reduces or increases the inspiratory pressure and returns to I) or leaves the pressure assistance unchanged proceeding to step iv), iv) adjusts the time period of the pressure assistance, depending on the inspiration time, the time period being left unchanged if the inspiration time lies in the predefined inspiration time interval, and returns to I).

A system selectively delivers either breath-synchronized, flow-targeted ventilation (BSFTV) or closed-system positive pressure ventilation (CSPPV) to augment respiration of a patient with a standard tracheal tube. A removable adaptor has a cap that can be removably attached to the proximal connector of the tracheal tube in BSFTV mode, and an inner cannula that extends within the tracheal tube to effectively divide it into two lumens. The adaptor includes a ventilator connector for removably engaging a ventilator hose to deliver air / oxygen through the adaptor and one lumen of the tracheal tube with a flow rate varying over each respiratory cycle in a predetermined waveform synchronized with the patient's respiratory cycle to augment the patient's spontaneous respiration. The adaptor also includes a port allowing the spontaneously-breathing patient to freely inhale and exhale in open exchange with the atmosphere through the other lumen.

The invention discloses an anesthesia catheter, and particularly discloses a suction anesthesia catheter capable of retaining spontaneous respiration of a patient. The anesthesia catheter comprises a nasal cavity insertion end and a device connection end, and an anesthesia catheter body is provided with an air inlet catheter, a negative pressure suction catheter, an end-expiratory gas concentration monitor connecting catheter, an air bag and an air bag catheter. When respiration anesthesia is carried out by means of the anesthesia catheter, the anesthesia catheter has the advantages that spontaneous respiration of the patient can be retained, and the upper airway is kept from impeding; the anesthesia catheter cannot occupy the mouth cavity, the brain and other surgical spots; the anesthesia catheter does not pass the glottis, so that the patient conveniently pronounces, and leakage of inhalation anesthetics cannot be caused; the concentration of end-expiratory CO2 and anesthesia gas can be conveniently and accurately monitored.

The embodiment of the present disclosure relates to a wearable respiratory myoelectricity stimulation device. The device comprises: a control unit which is used for generating corresponding electric stimulation current according to input information; and a phrenic nerve stimulation wearable electrode unit and an abdominal muscle stimulation wearable electrode unit which are both connected to the control unit and used for receiving the current, wherein the current acts on nerves or muscles, wherein the electrode position of the phrenic nerve stimulation wearable electrode unit corresponds to the phrenic nerve after being worn, and the electrode position of the abdominal muscle stimulation wearable electrode unit corresponds to rectus abdominis and obliquus abdominis. The embodiment of the present disclosure provides the wearable device suitable for household, the device is convenient for a user to wear, the electrode is aligned with a part needing electric stimulation after wearing, theoperation is simple, and the user can be helped to recover the spontaneous respiration by training the muscle strength and endurance of the diaphragm muscle and the abdominal muscle.

Methods and systems are provided for intra-airway breath sensors where intra-airway breath sensors are not located within a ventilation gas delivery circuit, but are exposed to spontaneous respiration airflow from a patient. Furthermore, methods and systems of the present invention may be used to protect an intra-airway breath sensor from contacting tissue or accumulating debris that may impair abilities of the intra-airway breath sensors.

Methods and systems are provided for intra-airway breath sensors where intra-airway breath sensors are not located within a ventilation gas delivery circuit, but are exposed to spontaneous respiration airflow from a patient. Furthermore, methods and systems of the present invention may be used to protect an intra-airway breath sensor from contacting tissue or accumulating debris that may impair abilities of the intra-airway breath sensors.

This invention is a device to be used with a system for supplying anaesthetic or respiratory gases into the airway of a human or an animal. This device is a supraglottic airway device, which includes a shaft with three tubes one for ventilation purpose and rest two for dynamic cuff inflation and other for suctioning purpose. The dynamic cuff is inflated by the gases supplied directly from the anaesthesia or ventilator circuit through a specialised adaptor via dynalumen. The “cuff inflation lumen” (“DynaLumen”) will also be having a locking mechanism to enable its use like a conventional LMA; i.e., the cuff can be left continuously inflated both during positive pressure ventilation as well as less during expiratory phase and during spontaneous respiration.

A fuel cell comprising a fuel supply unit having a diffusion unit for diffusing fuel supplied from a fuel supply port and an opening plate having a plurality of openings for ejecting the fuel from the diffusion unit, an oxygen introduction unit for introducing oxygen from the outside, and a power generation unit for generating power by means of the fuel supplied from the fuel supply unit and oxygen supplied from the oxygen introduction unit, characterized in that the opening ratio of the plurality of openings provided in the opening plate has an almost radiating distribution in which it is smaller near the fuel supply port and gradually increases as it is away from the fuel supply port. Accordingly, a spontaneous respiration type fuel cell that can supply fuel uniformly and is high in power generation efficiency is provided.

The invention discloses a high-efficiency protective mask based on an all-fiber electret generator and a preparation method thereof. The high-efficiency protective mask based on the full-fiber electret generator includes a tightening belt, a silicone mold, a full-fiber electret generator and a breathing valve arranged in the silicone mold. The full-fiber electret generator includes a filter layer and a sliding fixed support arranged on the filter layer; the filter layer includes successively stacked silica gel films, conductive fabrics, electret fiber membranes and non-woven fabrics; the The conductive fabric and the electret fiber membrane have different electronegativity, which can generate 200-1000V electrostatic voltage through spontaneous breathing drive. The protective mask based on full fiber electret generator of the present invention is to PM 2.5 Filtration efficiency ≥ 98%, PM 1.0 The filtration efficiency is more than 90%, the filtration pressure drop is between 20-50 Pa, and the flexibility and air permeability are good, the preparation process is simple, and it has broad application prospects in the field of personal protection.

The invention provides a respirator for patients with partial respiratory function loss. The respirator comprises an oxygen mask, a main machine case and a WINCE industrial control board. The respirator has the advantages that the respirator triggers auxiliary air flow matched with air flow generated by the spontaneous respiration of a patient according to the detected strength of the air flow generated by the spontaneous respiration of the patient and allows the air flow to constantly synchronize with the respiration frequency of the patient, a doctor can perform real-time parameter regulating according the spontaneous respiration ability, detected by the respirator, of the patient, the patient can be constantly in the matched air flow state with optical strength, and the rhythm and strength of the auxiliary air flow generated by the respirator can be controlled intelligently. By the respirator, the problem that the optimal auxiliary air flow strength currently needed by the patient cannot be judged in real time, and different degrees of lung damage on the patient is caused by the single standard is solved, auxiliary respiration can be performed strictly according to the detected respiration frequency of the patient, and the problem of man-respirator incoordination is avoided.