Abstract: A respiratory assistance device including a respiratory interface device configured to be worn by a user and deliver a gas, a gas temperature measurement unit configured to measure a gas temperature that is a temperature of the gas, a warming unit configured to warm the gas, and a temperature change unit configured to change the gas temperature by controlling the warming unit. The respiratory assistance device can administer comfortable respiratory assistance even during sleep.

Abstract: Respiratory assistance device suitable for Auto CPAP respiratory therapy. The respiratory assistance device includes: a blower device including a blower configured to generate pressurized air; an operation device including an operation interface configured to control the blower; a wireless or wired communication arrangement configured to connect the blower device and the operation device; an attachment part configured to be attached to a head of a patient so as to supply the pressurized air to an airway of the patient; and an air tube through which the pressurized air is introduced into the attachment part from the blower device. The blower device is accommodated in a blower device casing, and the operation device is accommodated in an operation device casing separate from the blower device casing.

Abstract: A respiratory assistance device including a respiratory interface device configured to be worn by a user and deliver a gas, a gas temperature measurement unit configured to measure a gas temperature that is a temperature of the gas, a warming unit configured to warm the gas, and a temperature change unit configured to change the gas temperature by controlling the warming unit. The respiratory assistance device can administer comfortable respiratory assistance even during sleep.

Abstract: A humidifier that can easily control temperature and humidity in an independent manner, irrespective of a flow rate of medical gas to be supplied, is provided. The humidifier is connected to a respiratory assistance device configured to regulate or assist ventilation of a user. The humidifier is configured to add moisture to gas fed from a gas source in the form of fine particles or water vapor. The humidifier includes a liquid container configured to contain liquid containing at least water, a mist-droplet generation unit configured to generate mist droplets being fine particles of the liquid, and a water retaining member configured to hold at least a part of the mist droplets.

Abstract: A silencer having improved ease of maintenance and a small size and light weight and a respiratory assistance device. The silencer is provided to therapy equipment where pressurized air is generated by a blower, and the pressurized air is supplied to an airway of a patient from an attachment part attached to the patient, the silencer being inserted into a flow passage so as to reduce sound generated by the therapy equipment, the pressurized air being introduced from the blower to the patient through the flow passage. The silencer is provided outside a casing which accommodates the blower.

Abstract: A program for controlling a respiratory assistance device that is connected to a user's airway and regulates an airway pressure to assist ventilation has a plurality of different respiratory assistance modes. The respiratory assistance program causes a computer to realize an input reception function that receives an input of setting for a respiratory assistance mode during operation of an air blower that blows air to the user's airway, and a flow rate control function that, when the input reception function receives the input of setting, controls a flow rate from the air blower in reflection of a result of the input of setting. A respiratory assistance device in which a user can change setting to select a comfort pressure and flow rate is provided by using such a program.

Abstract: A filter structure includes a blower having a gas suction opening, the blower compressing gas taken from the gas suction opening and supplying the compressed gas to respiratory organs of a patient; a housing that contains the blower and has air passage openings connected to the gas suction opening; a bag at least part of which is made of a nonwoven paper as a filter material, for covering the housing; and a chamber forming member disposed between the housing and the bag, for forming a chamber CAM between each air passage opening and the nonwoven paper. Thus, effort for maintenance of a filter is reduced.

Abstract: Respiratory assistance device suitable for Auto CPAP respiratory therapy. The respiratory assistance device includes: a blower device including a blower configured to generate pressurized air; an operation device including an operation interface configured to control the blower; a wireless or wired communication arrangement configured to connect the blower device and the operation device; an attachment part configured to be attached to a head of a patient so as to supply the pressurized air to an airway of the patient; and an air tube through which the pressurized air is introduced into the attachment part from the blower device. The blower device is accommodated in a blower device casing, and the operation device is accommodated in an operation device casing separate from the blower device casing.

Abstract: A pump unit includes a micro pump and an assist mechanism. The micro pump includes: a housing having an inflow port and an outflow port; and a pump device built in the housing, the pump device transporting a fluid from the inflow port to the outflow port. The assist mechanism includes a jet nozzle for jetting a fluid. A jet port is opened at a tip portion of the jet nozzle. The assist mechanism is disposed in such a manner that a gap through which a fluid outside can flow is formed between the tip portion and the housing. The jet port is located in proximity to the inflow port. The jet port directly faces the inflow port.

Abstract: Exhalation valve including a diaphragm for opening and closing an outlet of an exhalation flow path for guiding exhaled air to the outside air, a back chamber provided opposite the exhalation flow path in the diaphragm and forming a space together with the diaphragm, and a pump unit fixed to the circumference of the back chamber for adjusting the air pressure inside the back chamber by feeding and discharging of air to and from the back chamber. The diaphragm closes the outlet of the exhalation flow path when the air pressure inside the exhalation flow path is lower than the air pressure inside the back chamber, and opens the outlet of the exhalation flow path when the air pressure inside the exhalation flow path is higher than the air pressure inside the back chamber.

Abstract: A respiratory assistance device 10 includes: a mask 13 having an expiratory hole 13a; an expiratory valve 15 provided in the mask 13, for opening and closing the expiratory hole 13a; and a control unit 17 for performing overall control on the entire device. The mask 13 and the expiratory valve 15 together form an opening and closing device. The expiratory valve 15 is deformable by deformation of a piezo element 15a. The expiratory valve 15 is disposed on an inner surface 13f so that a deformation direction thereof, i.e., a thickness direction thereof, extends along the inner surface 13f of the mask 13 and a side surface 15m slides along the inner surface 13f by the deformation thereof.

Abstract: A respiratory assistance device including a pair of prongs which are airways to be attached to a user's nose, and a blower which is connected to the pair of prongs and sends air to the user's nasal cavity via the prongs. The blower is placed on and is in contact with the user's mouth. The blower includes a housing including an intake port from which gas is taken in, a flow channel through which the air taken in via the intake port flows, and a discharge port which sends the air flowing through the flow channel toward the prongs, an impeller arranged in the housing so that its front side faces the intake port, and a partition member arranged on a rear side of the impeller so that a slit is formed along an inner periphery of the housing thereby partitioning the rear side into a space where the impeller is arranged.

Abstract: A pump unit can achieve significant size reduction while maintaining the performance thereof. Micropumps are arranged in a lattice pattern with rows and columns, and a discharge port of at least a micropump arranged in the most downstream row is directly connected to an integrated discharge port. The pump unit further includes: a discharge direct-connection mechanism for connecting respective discharge ports of a plurality of micropumps in a middle row directly to the integrated discharge port; an intake direct-connection mechanism for connecting respective intake ports of the micropumps directly to a fluid to be supplied first; a series-connection mechanism for connecting a discharge port of a micropump in an upstream row directly to an intake port of a micropump in a downstream row; and a controller for controlling the discharge direct-connection mechanism, the intake direct-connection mechanism, and the series-connection mechanism.

Abstract: A blower 10 includes: a housing 11 having an intake port 16 and a flow passage 22 that communicates with a discharge port 17; an impeller 13 disposed in the housing 11 so that the front surface thereof faces the intake port 16; and a partitioning member 15 that is disposed toward the rear surface of the impeller 13 to partition the inside of the housing 11 into a space 21 in which the impeller 13 is disposed and the flow passage 22. The partitioning member 15 forms a slit d, which has a width w of 1.0 mm or less and extends along the inner peripheral surface of the housing 11, between the partitioning member 15 and the inner peripheral surface of the housing 11.

Abstract: A respiratory assistance device 10 includes: a mask 13 having an expiratory hole 13a; an expiratory valve 15 provided in the mask 13, for opening and closing the expiratory hole 13a; and a control unit 17 for performing overall control on the entire device. The mask 13 and the expiratory valve 15 together form an opening and closing device. The expiratory valve 15 is deformable by deformation of a piezo element 15a. The expiratory valve 15 is disposed on an inner surface 13f so that a deformation direction thereof, i.e., a thickness direction thereof, extends along the inner surface 13f of the mask 13 and a side surface 15m slides along the inner surface 13f by the deformation thereof.

Abstract: A pump unit 10 includes: a housing 13 provided with an inlet 11 and an outlet 12 for a fluid; and a pump group composed of micro pumps 15 arranged in the housing 13, for allowing a fluid entering through the inlet 11 to exit from the outlet 12. The pump group includes: the micro pump 15 positioned in the most upstream (m1); the micro pump 15 positioned in the most downstream (m4); and the micro pumps 15 positioned in the middle (m2 to m3). The housing 13 includes: an inlet direct-connecting flow passage 41 directly connecting a suction port 31A of the micro pump 15 positioned in the most upstream with the inlet 11; an outlet direct-connecting flow passage 42 directly connecting a discharge port 31B of the micro pump 15 positioned in the most downstream with the outlet 12; and a flow passage forming mechanism switchable between a state in which the micro pumps 15 are connected in series and a state in which the micro pumps 15 are connected in parallel.

Abstract: A pump unit includes a micro pump and an assist mechanism. The micro pump includes: a housing having an inflow port and an outflow port; and a pump device built in the housing, the pump device transporting a fluid from the inflow port to the outflow port. The assist mechanism includes a jet nozzle for jetting a fluid. A jet port is opened at a tip portion of the jet nozzle. The assist mechanism is disposed in such a manner that a gap through which a fluid outside can flow is formed between the tip portion and the housing. The jet port is located in proximity to the inflow port. The jet port directly faces the inflow port.

Abstract: The present invention provides oxygen concentrators which achieve reliable pressure control in the oxygen columns with reduced number of components for pressure control in the oxygen columns, and also easy maintenance and reduced power consumption. PSA, PVSA, or VSA oxygen concentrator consisting of oxygen concentration columns BF1 and BF2, pressure control means for adjusting pressure in the oxygen concentration columns, and oxygen tank T for storing concentrated oxygen, comprises mechanical flow control means SC1 which regulates flow from the oxygen tank to the oxygen concentration columns. Pressures in the oxygen concentration columns BF1 and BF2 are kept within a predetermined range by the function of mechanical flow control means SC1 placed in between the oxygen concentration columns and the oxygen tank.

Abstract: There is provided a humidification system for a breathing circuit that can detect abnormality in flow of intake air inside an inspiration tube. A humidification section is arranged inside an inspiration tube of a breathing circuit. Further, the humidification system is constructed capable of supplying moisture into intake air flowing inside the inspiration tube by using, for example, hydrophobic hollow fibers or a hydrophobic membrane. The flow section comprises a supply section for supplying moisture to the humidification section and a delivery section for delivering moisture that has been supplied to the humidification section. The control section detects intake air abnormality using difference information for water temperature of the supply section and water temperature of the delivery section.