Canon Kabushiki Kaisha

Ebara Corporation

Mitsuru Imai

Toshiyuki Nobutani

Soji Hamano

Keisuke Kawahara

Masahiro Takei

Toshihiro Tanaka

Takayuki Saito

Yohei Masada

Satoshi Tsuchiya

Masaru Sugita

Masaya Kobayashi

Minoru Machida

Ken Nakajima

Kenichi Sasaki

Sota Nakagawa

Kenichi Sekine

Yasushi Kosaka

The invention provides a medicine ejection device which provides stable ejection even when a reservoir with high sealability is used and can eject an appropriate amount of medicine. A medicine ejection portionincludes an ejection nozzlefor ejecting a medicine and an elementwhich generates energy for ejecting the medicine from the ejection nozzle, and is connected to a medicine storing portionfor storing the medicine. The medicine storing portionis blocked from the outside air except a path through the ejection nozzle, so that when the medicine is ejected from the ejection nozzle, a pressure difference is formed between the outside and the inside of the medicine storing portion. A pressure unitwhich is a feature of the present invention pressurizes a movable wallwhen ejecting a medicine, which is displaced so that the volumetric capacity of the medicine storing portiondecreases due to the pressure difference.

Medicine ejection device and controlling method thereof

An ejection head unit is attachable to an inhaler for ejecting a medicine to cause a user to inhale the medicine and has a plurality of ejection heads having an element generating energy for ejecting the medicine, and a plurality of ejection nozzles through which the medicine is ejected by the element. An inhaler for ejecting a medicine to allow inhalation thereof by a user has an air flow path guiding a medicine that is inhaled accompanying inspiration by the user to a suction port, an ejection head unit having a plurality of ejection heads including an element generating energy for ejecting the medicine and a plurality of ejection nozzles through which the medicine is ejected by the element, and a positioning unit for positioning a single ejection head among the plurality of ejection heads at an opening provided in one portion of the air flow path.

Inhaler and ejection head unit attachable to the inhaler

A drug ejecting apparatus has an ejection port and an element which generates energy for ejecting a drug from the ejection port; a drug containing unit is connected to the drug ejection apparatus, and contains the drug; a movable wall is attached to an end of the drug containing unit, and is displaced by difference between pressures inside and outside of the drug containing unit; and a control unit displaces the movable wall. The drug ejection apparatus is filled with the drug, and the inside pressure of the drug containing unit is put in a negative pressure state in advance of ejecting of the drug, by displacing the movable wall by means of the control unit.

Drug ejecting apparatus and control method thereof

There is provided a liquid formulation ejection device which improves reliability of inhalation even in a case where a preejection is performed and resolves a concern about hygiene. The liquid formulation ejection device () ejects a liquid formulation in a form of liquid droplets into an inhalation flow path () and allows a user to inhale the formulation. The liquid formulation ejection device () includes an ejector () for performing normal liquid droplet ejection for inhalation and liquid droplet preejection not for inhalation, and a discharger () for removing liquid droplets ejected by the liquid droplet preejection out of an inside of the inhalation flow path ().

Liquid formulation ejection device

A medicine ejection apparatus which ejects a medicine for medicating a user has a medicine ejecting unit, which has an element that generates energy for ejecting the medicine, a drive control unit which controls a drive start and a drive stop of the element, and an ejection amount determining unit, which determines a total amount of a medicine that is ejected from the medicine ejecting unit after the element performs a drive stop. The drive control unit enables the element to perform driving to eject an amount of medicine calculated from a difference between a set ejection amount and the total amount of medicine that has actually been ejected, when the total amount ejected, as determined by the ejection amount determining unit, is less than the set ejection amount.

Medicine ejection apparatus and control method thereof

A drug ejection apparatus comprises a drug ejection assembly having an ejection port and an element for generating energy for ejecting a drug through the ejection port, a drug container connected with the drug ejection assembly for holding the drug, a pressure sensor unit for sensing a pressure change in the inside of the drug container in correspondence with ejection of the drug through the drug ejection assembly, and a drive control unit for deciding driving conditions of the element for ejecting a prescribed amount of the drug by reference to an output level of the pressure sensor unit on driving the element under prescribed conditions.

Drug ejection apparatus, estimation of ejection performance thereof, and method of drug ejection

A medicine ejection device is provided allowing a medicine with a desired droplet diameter to be inhaled at a constant rate. The medicine ejection device has a decision part at which the ejection operating conditions of a medicine ejection part for ejecting the medicine are decided in accordance with at least one of an open-air environment or a state of the medicine during use of the device. The device ejects the medicine according to the ejection operating conditions decided by the decision part.

Medicine inhaler and medicine ejection method

There is provided a liquid medicine ejection device to eject liquid medicine into an inhalation flow path in the form of liquid droplets, thereby to allow a user to inhale the liquid medicine through a suction portion. In the liquid medicine ejection device is an ejection means, which communicates with a liquid medicine storage section, for ejecting the liquid medicine in the form of liquid droplets from an ejection opening. A pressure variable means changes a pressure in the liquid medicine storage section in accordance with a change of pressure in the inhalation flow path connected to the ejection opening of the ejection means and the suction portion. According to the liquid medicine ejection device of the present invention, it is possible to prevent ejection failure caused by a negative pressure applied to the ejection means, thereby enabling reliable inhalation.

Liquid medicine ejection device

An ejection apparatus for ejecting droplets of liquid includes a loading portion, a reader, and a judging unit. The loading portion detachably loads therein a liquid cartridge container for containing liquid, and a liquid ejection cartridge having an ejecting portion for ejecting liquid separately, or as a combined kit. The reader reads information attached to at least one of the liquid cartridge container and the liquid ejection cartridge. The judging unit judges, based on the information read by the reader, whether each of the liquid cartridge container and the liquid ejection cartridge loaded in the loading portion is appropriate, or whether a combination of the liquid cartridge container and the liquid ejection cartridge is a predetermined combination. The ejection apparatus allows a user to relatively readily and accurately carry out ejection of appropriate liquid by an appropriate ejection unit.

Liquid ejection apparatus

A liquid medication cartridge includes an accommodating portion for accommodating a liquid medication; a liquid discharge portion having a discharge port for discharging the liquid medication by using an ink jet technique, a communicating member for establishing communication between the accommodating portion and the liquid discharge portion and a filling member for filling the liquid discharge portion with the liquid medication.

Liquid medication cartridge and inhaler using the cartridge

An electromagnetic wave applying apparatus having an electromagnetic wave source ( ) such as an ultraviolet lamp or the like, a cylinder ( ) surrounding the electromagnetic wave source, a liquid retention tank ( ) disposed around the cylinder, and an inlet portion ( ) for introducing a liquid overflow from the liquid retention tank as a thin film flowing down an inner wall surface of the cylinder, which is irradiated with an electromagnetic wave from the ultraviolet lamp ( ). The electromagnetic wave applying apparatus also has swirling flow forming means for causing the liquid introduced from the inlet portion ( ) onto the inner wall surface of the cylinder to flow as a swirling flow down the inner wall surface. The electromagnetic wave applying apparatus allows a large amount of liquid to be stably treated by the application of an electromagnetic wave without causing the electromagnetic wave source such as an ultraviolet lamp or the like to be contaminated.

Method and apparatus for electromagnetic irradiation of liquid

In an ozonized water producing apparatus in which a pressurized ozone gas generated by an electric discharge type ozonizer is dissolved in water to be treated through a porous hollow-fiber membrane, an infinite variable-speed control type pump is provided upstream of the hollow-fiber membrane to maintain the water pressure inside the hollow fibers higher than the ozone gas pressure and to control the water pressure and flow rate, and a control mechanism is provided to control the ozone concentration in the treated water on the basis of the ozone gas concentration. Thereby treated water containing neither tiny bubbles nor impurities is obtained, and the concentration, flow rate and pressure of the treated water are controlled at constant levels.

Growing community of inventors

Chichibu, Japan

Mitsuru Imai