51 results about "Gas transfer" patented technology

The present invention provides a gas inhalation device with a constant concentration of gas entering the respiratory tract and without respiratory resistance, including: a mask, a gas source and a gas mixer, wherein the mask is a container that is capable of holding 50-1000 ml of gas, a proximal end of the mask is a soft cushion for fitting the face and surrounded by a catheter, the catheter is provided with a plurality of small orifices communicating with an inner cavity of the mask, one end of the catheter is connected to one end of an adapter tube, the other end of the adapter tube is connected to a gas delivery pipe, the gas delivery pipe is a catheter connecting the adapter tube and the gas source or the gas mixer; a distal end of the mask is provided with a huge orifice or a plurality of large orifices to ensure unobstructed gas in and out, with almost no airflow resistance, and an internal pressure of the mask cavity is always zero; one or two headband interfaces are provided on both sides of the mask's outer layer for connecting a headband fixing the mask to ensure that the mask is stably fixed on the face.

The invention discloses a water body remediation system and method. The remediation system comprises a gas and medicine supply assembly, a composite supply pipe and an ecological floating island, wherein one end of the composite supply pipe is connected with the gas and medicine supply assembly, and the other end of the composite supply pipe extends into a water body; the medicament release assembly comprises a first box body, at least one air bag arranged in the first box body, a driving disc rotationally arranged on the side wall of the first box body, and at least one shifting rod arranged on the driving disc and used for pushing the air bag, an impeller is arranged in the air supply pipe located at a shaft rod of the driving disc, and the impeller is connected with the shaft rod of the driving disc. According to the water body remediation system, the gas medicine supply assembly is synchronously driven by utilizing gas conveying power of the aeration pump, so that medicine powder can be conveyed while water body aeration is performed along with the composite supply pipe, and a small amount of medicine powder can be added for multiple times.

A system (100) and a method (200) for providing intermittent hypoxia using sequential gas delivery to a subject are disclosed. The method (200) comprises the step (204) of inducing a normoxic end tidal partial pressure of oxygen using a sequential gas delivery system within a first specific number of breaths for a first duration and the step (208) of inducing a hypoxic end tidal partial pressure of oxygen using the sequential gas delivery system within a second number of breaths for a second duration and repeating the steps for a target number of cycles until a therapeutically effective dose of intermittent hypoxia is attained. The sequential gas delivery system (100) may control the end tidal partial pressure of carbon dioxide simultaneously and independently of the end tidal partial pressure of oxygen. The method (200) may be applied in the treatment of a pathological condition in a subject or for improving a health condition of a subject.

To provide an ejector that can prevent backflow of working fluid into the gas supply system. [Solution] The ejector 1 has an orifice section 13, a reservoir section 18, and a suction groove 19. Working fluid flows through the orifice section 13. The reservoir section 18 is formed around the orifice section 13 and gas is drawn in through it. The suction groove 19 is formed around the orifice section 13 and supplies the gas from the reservoir section 18 to the orifice section 13. The groove width of the suction groove 19 is set to 100 μm or less.

The present invention relates to a breathing gas circulation system to be connected to a water chamber of a respiratory assist device to guide a heated / humidified breathing gas to a patient, wherein a circuit unit comprises: an intake tube, one lengthwise end of which connects to a water chamber so as to communicate therewith, and which delivers a heated / humidified breathing gas to the patient; a branch unit which connects to the other lengthwise end of the intake tube so as to communicate therewith, and which connects to a breathing mask worn on the patient, so as to communicate therewith; and a discharge tube, one lengthwise end of which connects to the branch unit so as to communicate therewith, and the other lengthwise end of which connects to an artificial respirator to guide thereto the gas generated subsequent to the breathing of the patient.

A gas delivery system, for providing gas to a wearer, includes a first body having a first cavity. The first body is supportable to a side of a nose and mouth of the wearer. A first adapter receives gas from a gas supply and provide the gas to the first cavity. A plurality of first openings in the first body to create a bolus of gas about the nostrils of the nose and the mouth. The first body, and a second similar body may be supported by an adjustable bridge on opposite sides of the nose and mouth of the wearer.

The application relates to a gas quantitative transfer system and method, and relates to the technical field of gas transfer. The system comprises a first gas storage device, a quantitative ring assembly, a switching valve and a controller. A first gas inlet of the quantitative ring assembly is connected with the first gas storage device. A first gas outlet of the quantitative ring assembly is connected with the switching valve through a pipeline, and the switching valve is used for being connected with a gas extraction device or ambient gas. The controller is electrically connected with the first gas storage device, the quantitative ring assembly, the switching valve and the gas extraction device. When the running time of the gas extraction device reaches a first target time and target gas in the first gas storage device enters the pipeline, the controller controls the switching valve to be connected with the ambient gas, and after the pressure in the quantitative ring assembly is balanced, the target gas is in the pipeline, and the first gas inlet and the first gas outlet are disconnected. The application has the effects that the filling process is convenient and fast, and the target gas has a good detection effect.

In an embodiment, a connector or connector assembly for attaching a nasal cannula with a gas delivery hose includes a sensor port for a sensor probe positioned near an end of a nasal cannula, which can allow the sensor probe to be placed closer to the patient's nostrils than previous connector parts allowed. The connector can be configured to advantageously allow the nasal cannula to rotate relative to the gas delivery hose, thereby allowing a patient or healthcare provider to untangle or otherwise straighten the hose or the cannula. The connector assembly can be configured to automatically align locking protrusions on a first component with locking recesses on a second component, where insertion of the second component within the first component causes the second component to rotate relative to the first component, thereby aligning the locking protrusions with associated locking recesses.

A system for delivering medical gas, such as supplemental oxygen, to a subject includes a positioner and a diffuser. The positioner includes a positioning wall with an aperture that receives and may couple to a proximal portion of the diffuser. The system may also include a pillowcase with one or more fasteners that hold the positioner and a diffuser coupled thereto at a desired location and orientation over a pillow where a subject who is to receive medical gas will place their head. The pillowcase may receive two positioners and associated diffusers. Methods of administering medical gas and methods for maintaining medical gas delivery systems are also disclosed.

The invention belongs to the technical field of air supply assemblies, and discloses a quick-replaceable air supply assembly for critical respiratory patients, which comprises a main oxygen bottle and an auxiliary oxygen bottle, and further comprises a conversion cavity, two air inlets are formed in the lower end of the conversion cavity, at least two air outlets are formed in the upper end of the conversion cavity, and air inlet connecting assemblies are fixedly arranged at the air inlets; the air supply assembly comprises a main air delivery pipe and an auxiliary air delivery pipe, the main air delivery pipe is provided with an air inlet, the auxiliary air delivery pipe is provided with an air outlet, the air outlet is provided with an air outlet connecting assembly, the main air delivery pipe and the auxiliary air delivery pipe are both provided with air inlet connectors corresponding to the air inlet connecting assembly, the air outlet connecting assembly is provided with an air outlet connector, and the end of the air outlet connector is fixedly provided with an air delivery pipeline. Due to the design of the whole gas supply assembly, the gas conveying process is more stable, continuous and stable oxygen can be provided according to the actual requirements of the patient, the treatment effect of the critical respiratory patient can be improved, and more powerful guarantee is provided for life health of the patient.

The invention provides a multi-channel composite connection monitoring pipeline structure integrated with NO infusion. The multi-channel composite connection monitoring pipeline structure comprises an infusion catheter, an oxygen input connector, a rotary conversion connector, an NO injection tee joint, a gas sampling tee joint, an oxygen flow sensor and a mixed gas flow sensor. NO is injected into the infusion catheter through the NO injection tee joint and is mixed with oxygen in the infusion catheter, the gas sampling tee joint is located on the downstream of the first connecting pipe of the infusion catheter to obtain stable mixed gas for real-time concentration monitoring, and the two flow sensors are used for monitoring the oxygen and the gas flow after the NO and the oxygen are mixed in real time respectively. The rotary adapter is quickly compatible with a nasal catheter, a mask and an extracorporeal circulation related interface, so that cross-scene seamless connection of intraoperative and postoperative NO treatment is realized. According to the invention, the frequency of pipeline replacement is reduced, the risks of gas leakage, misconnection and pollution are reduced, the stability and controllability of oxygen and NO gas delivery are improved, and the safety and effectiveness of NO infusion are improved.

To provide a nitric oxide supply system.SOLUTION: The present invention generally relates to a system and a method for delivery of therapeutic gas to a patient in need thereof and the patient receives breathing gas from a high frequency ventilator by using at least an enhanced therapeutic gas (for example, nitric oxide, NO, and the like) flow measurement. At least some of these enhanced therapeutic gas flow measurements can be used to address some surprising phenomena that may, at times, occur when wild stream blends therapeutic gas into the breathing gas the patient receives from a breathing circuit affiliated with the high frequency ventilator. When at least some of these enhanced therapeutic gas flow measurements are used, the dose of the therapeutic gas wild stream blended into the breathing gas that the patient receives can be more accurate and / or being under delivery of therapeutic gas into the breathing gas can be avoided and / or reduced.SELECTED DRAWING: Figure 1

Nose interface comprising: a first extension with a first base and a first terminal end; a second extension with a second base and a second terminal end; a gas distributor comprising a distributor chamber and a gas inlet, the distributor chamber having a flow channel configured to direct the gas flow from the gas inlet through the distributor chamber substantially into the first extension and the second extension;and at least one distributor element positioned within the flow channel of the distributor chamber, wherein the at least one distributor element is configured to increase resistance to a gas flow passing through at least one of the first extension, the second extension or the distributor chamber, wherein the gas inlet is in fluid communication with a gas delivery line or is configured to be in fluid communication with it, and wherein the increase in resistance to the gas flow is configured to cause an asymmetric gas flow at the first extension and at the second extension.

An oxygenator system includes: a canister; a membrane in the canister to provide a gas transfer with blood; a blood inflow tube to deliver blood to the canister; and a blood outflow tube to deliver blood from the canister, wherein one or more of the blood inflow tube or the blood outflow tube includes a curved portion.

A method for monitoring the administration of therapeutic gas is described. The method comprises the steps of receiving the desired concentration of therapeutic gas into a gas delivery device, providing flows of respiratory gas and therapeutic gas containing nitric oxide, and administering a combined flow of both. A first flow sensor measures the flow rate of the respiratory gas. The method also includes obtaining the flow rate of the therapeutic gas, establishing upper and lower limits for this flow rate that trigger the gas delivery device to stop, issuing an alert when the upper or lower limits are reached, and automatically adjusting these limits to prevent the device from stopping.

This application relates to frames and headgear for respiratory mask systems. A respiratory mask system has a patient interface comprising a frame (5) to secure a seal (4) and a gas delivery conduit (6) together. A recessed channel (106) and / or headgear retention feature (450) connects a headgear (3) to the patient interface. An inlet collar (114) connects the frame to the gas delivery conduit, converges, includes a bias flow aperture (127) forming a 240 degree arc, and has a distal rim with a top and bottom that protrude distally relative to lateral sides (Fig. 26B). The headgear includes a top strap, a pair of side arms, an optional rear strap, and a yoke configured to connect to the recessed channel (106). The top strap, side arms, and yoke form an integral closed loop (straps). A first edge of the strap includes a soft edge, and an opposite edge includes a soft edge portion and a rigid edge portion (Fig. 16). The top strap can include two portions that are adjustably connected to one another.

A patient interface includes a positioning and stabilizing structure having a gas delivery tube for pressurized air to flow from a connection port to a seal-forming structure surrounding a patient's airway. The gas delivery tube is configured or otherwise configured to have an outer fabric layer and an impermeable inner layer forming an interior. The impermeable layer may comprise an inner fabric layer woven to an outer fabric layer or a silicone or polymer layer applied to the outer fabric layer. The technique may alternatively be used to construct or otherwise configure at least a portion of an air circuit between a patient interface and a respiratory pressure treatment device.

A lid assembly for a container includes a housing including a closure, a first vent, and a second vent. The housing defines a receiving area and a gas flow pathway. The gas flow pathway extends between the first vent, allowing gas transfer between the receiving area and the gas flow pathway, and the second vent, allowing gas transfer between the gas flow pathway and an atmosphere. An extensible and collapsible bellows coupled to the housing includes an open distal end open to the receiving area and the first vent and configured to fit over the container. The bellows is adjustable between an extended position, extended outward of the receiving area to the open distal end, and a collapsed position, compressed in the receiving area between the first vent and the open distal end. The closure is movable into and out of a closed position closing the first vent.

This application relates to a gas path structure and a ventilator. The gas path structure is used for gas delivery in the ventilator and includes a gas source, a pressure reducing valve, and a detection branch. The pressure reducing valve includes an input end and an output end. The input end is connected to the gas source, and the output end is used to connect to the user. The detection branch is connected to the output end of the pressure reducing valve and is used to detect the pressure at the output end. Because the detection branch is connected to the output end of the pressure reducing valve, it can detect the pressure at the output end in real time, providing a reference for adjusting the pressure of the pressure reducing valve. Compared to traditional technologies that require disassembling the pressure reducing valve for separate pressure adjustment, the gas path structure provided in this application, by setting a detection branch that can detect the pressure at the output end of the pressure reducing valve, allows for pressure adjustment of the pressure reducing valve without disassembling it. This improves the convenience of pressure adjustment during factory testing, fault diagnosis, troubleshooting, and maintenance. A ventilator including the above-mentioned gas path structure makes pressure adjustment of the pressure reducing valve more convenient.

A patient interface including a positioning and stabilising structure with gas delivery tubes providing for flow of pressurised air from a connection port to a seal-forming structure around the patient's airways. The positioning and stabilising structure is formed from at least one textile layer, wherein at least a portion of the textile layer forms a channel that receives or functions as a gas delivery tube.

A breathing gas supply system, potentially for combat aircraft, operative to decrease hypoxia and asynchronous breathing and to conserve breathing gases. An input valve selectively permits breathing gas to fill a flexible gas reservoir through a fluidic connector. Breathing gas can be maintained at an elevated pressure. The fluidic connector delivers gas to an output interface, such as an oxygen mask. An inspiratory valve is permitted to open when inspiration is sensed by an inspiratory sensor, and an expiratory valve is permitted to open when expiration is sensed by an expiratory sensor. The inspiratory and expiratory sensors can be separate or embodied as an inspiratory-expiratory sensor. A sensor reservoir fluidically open to a volume between the output interface and the face of the user can expand or compress to indicate inspiration or expiration. The inspiratory and expiratory valves can be electromagnetically operated.

The present application belongs to the technical field of gas test, and discloses a needle cylinder gas transfer device, which comprises a sleeve and a double-end needle. The inside of the sleeve is provided with a fixed block and a piston, and an installation cavity is defined between the piston, the fixed block and the inner wall of the sleeve. The needle heads at both ends of the double-end needle respectively pass through the fixed block and the piston. The double-end needle is internally provided with a floating ball. A gap for gas to pass through is formed between the floating ball and the inner wall of the double-end needle. The floating ball can move upwards and close the needle head above. The sidewall of the double-end needle is provided with a pressure relief hole. The installation cavity is filled with sealing liquid. In the vertical direction, the liquid level of the sealing liquid is above the pressure relief hole. By setting the floating ball, the piston and filling the sealing liquid, the needle cylinder gas transfer device is simple in structure and convenient to operate. The sealing liquid can achieve liquid sealing effect on the pressure relief hole, ensuring the purity of the gas sample in the sampling needle. The piston can eject the sampling needle after the gas sample is transferred, improving the stability and convenience of single-person operation.

To provide a nitric oxide supply system.SOLUTION: The present invention relates generally to systems and methods for delivering therapeutic gas to a patient in need thereof, wherein the patient receives breathing gas from a high frequency ventilator using at least an enhanced therapeutic gas (e.g., nitric oxide, NO, etc.) flow meter. At least some of these enhanced therapeutic gas flow measurement devices can be used to address several surprising phenomena that sometimes occur when therapeutic gas is turbulently mixed into breathing gas received by a patient from a breathing circuit associated with a high frequency ventilator. When using at least some of these enhanced therapeutic gas flow measurement devices, the administration of therapeutic gas that is turbulently mixed into the breathing gas received by the patient can be more accurate and / or under-delivery of therapeutic gas into the breathing gas can be avoided and / or reduced.SELECTED DRAWING: Figure 1

A system and method for supplying multiple gases are described. One system includes a gas adapter having a plenum. The system further includes a first gas line coupled to the gas adapter for transporting a first process gas to the plenum. The system includes a second gas line coupled to the gas adapter for transporting a second process gas to the plenum. The first and second process gases are transported while maintaining their temperatures. The gas adapter mixes the first process gas with the second process gas under vacuum to produce a gas mixture for supplying the gas mixture to the internal volume of a plasma chamber.

A system (100) and a method (200) for providing intermittent hypoxia using sequential gas delivery to a subject are disclosed. The method (200) comprises the step (204) of inducing a normoxic end tidal partial pressure of oxygen using a sequential gas delivery system within a first specific number of breaths for a first duration and the step (208) of inducing a hypoxic end tidal partial pressure of oxygen using the sequential gas delivery system within a second number of breaths for a second duration and repeating the steps for a target number of cycles until a therapeutically effective dose of intermittent hypoxia is attained. The sequential gas delivery system (100) may control the end tidal partial pressure of carbon dioxide simultaneously and independently of the end tidal partial pressure of oxygen. The method (200) may be applied in the treatment of a pathological condition in a subject or for improving a health condition of a subject.

The present disclosure generally relates to systems and methods for delivery of therapeutic gas to patients, using techniques to compensate for disruptions in breathing gas flow measurement, such as when breathing gas flow measurement is unavailable or unreliable. Such techniques include using historical breathing gas flow rate data, such as moving average flow rates, moving median flow rates and / or flow waveforms. At least some of these techniques can be used to ensure that interruption in therapeutic gas delivery is minimized or eliminated.

A device (100) for providing oxygen to a patient for inhalation, the device comprising: a first sensor (24) for determining an inspiratory flow rate of the patient; a second sensor (50) for measuring the blood oxygen saturation of the patient; at least one mass flow controller and associated valve (26) operable to adjust the flow rate and control the duration of the oxygen pulse provided from the device to the patient; and a controller (22) configured to repeatedly and adjustably: initiate opening of the valve to release a pulse of oxygen for inhalation by a patient; adjusting a flow rate of an oxygen pulse through a mass flow controller based on the inspiratory flow rate; and controlling the duration of the oxygen pulse by closing the valve based on the oxyhemoglobin saturation. A method of using such a device to provide oxygen to a patient for inhalation is also provided.