Terumo Kabushiki Kaisha

Thoratec Corporation

Ntn Corporation

Tc1 LLC

Terumo Corporation

Takehisa Mori

Kiyoshi Komatsu

Takayoshi Ozaki

Takeshi Tsubouchi

Mitsuteru Kimura

Mitsutoshi Yaegashi

Kei Honda

Kenichi Suzuki

Takeshi Kudo

Atsushi Sone

Takehiko Asada

Atsushi Okawa

Hiroyuki Yamada

Takeshi Shimomura

Shuichiro Yamaguchi

Ken Sugiura

Masao Takinami

Naoto Uchida

Teruaki Katsube

Kensuke Uemura

Hisanaga Kiba

Hitomi Kadono

A sensor system () has a medical device provided with a first transmission/reception unit () installed inside a medical instrument () to output a detection signal of a sensor unit (), and a second transmission/reception unit () detachably installed outside the medical instrument () to transmit/receive a signal to and from the first transmission/reception unit () in a contactless manner. The first transmission/reception unit () and the second transmission/reception unit () are arranged so as to be opposed to each other across the medical instrument () to transmit/receive the signal by electromagnetic induction.

Sensor system and medical device

A pump device () includes a housing () including a blood inflow port () through which blood flows in, and having a fixed-side repulsive magnet () disposed in an annular manner; and an impeller () that is rotatably housed inside the housing (), and having a movable-side repulsive magnet () disposed in an annular manner. The fixed-side repulsive magnet () is disposed in a position offset toward the blood inflow port () side relative to the movable-side repulsive magnet (). In the fixed-side repulsive magnet () and the movable-side repulsive magnet (), a fixed-side repulsive surface () and a movable-side repulsive surface () adjacent to each other have the same polarity.

Centrifugal blood pump device

A medical device and method are disclosed which can cause a filter included in a cylinder to capture a capturing target by causing a fluid including a circulating flow to flow inside and around the cylinder introduced into a living body. The medical device has a filter, a cylinder, and an impeller. The filter captures a capturing target present inside a living body. The cylinder includes a lumen having the filter arranged therein, an aspiration section, which is open on the distal side of the lumen, and a discharge section which is open on a side surface on a proximal side of the lumen. The impeller is arranged on a proximal side of the filter in the lumen, and causes the lumen to aspirate the capturing target together with a fluid by causing the fluid to flow from the aspiration section toward the discharge section inside the living body.

Medical device

A medical device for collecting a solid object together with a fluid in a living body, including: a cylindrical member having an inner cavity, a suction port provided on the distal end of the inner cavity, and a discharge port on a side wall and communicating with the inner cavity; an impeller in the inner cavity configured to carry the fluid from the suction port to the discharge port; and a filter in the inner cavity configured to collect the solid object. At least part of the wall surface of the cylindrical member, which defines a flow channel allowing movement of the fluid from the impeller to the discharge port, is inclined from a center axis of the cylindrical member toward a distal end with respect to a transverse direction of the cylindrical member.

Medical device and medical device assembly

This centrifugal blood pump apparatus includes an impeller () provided in a blood chamber (), and a plurality of coils () provided in a motor chamber () for driving the impeller () to rotate with a dividing wall () interposed therebetween. A flexible substrate () in the shape of a strip is arranged to surround outer circumferences of the plurality of coils (), and is connected to the plurality of coils () and a connector (). A driving voltage (VU, VV, VW) is externally supplied to the plurality of coils () via the connector () and the flexible substrate (). Thus, assembling workability, productivity and reliability are improved.

Rotation drive device and centrifugal pump apparatus employing same

A centrifugal blood pump device includes a housing, a centrifugal pump section having an impeller which rotates in the housing to send blood by centrifugal force upon rotation, an impeller rotation torque generation section for attracting a magnetic member of the impeller and rotating the impeller, and a plurality of grooves for hydrodynamic bearing provided on an inner face of the housing on the impeller rotation torque generation section side. A side wall of each of the grooves for hydrodynamic bearing is formed as an inclined side wall inclined obliquely such that the groove for hydrodynamic bearing is expanded from a bottom face of the groove for hydrodynamic bearing toward an opening face of the groove for hydrodynamic bearing.

A blood pump apparatus includes a housing having a blood inlet port and blood outlet port, a pump unit including an impeller that rotates within the housing, and an impeller rotational torque generation section. The housing includes a plurality of magnetic members embedded between the impeller and the impeller rotational torque generation section for transmitting a magnetically attractive force generated by the impeller rotational torque generation section to an impeller body. The pump device includes a non-contact bearing mechanism for rotating the impeller without contacting with the inner surface of the housing when the impeller is rotated by the impeller rotational torque generation section.

Blood pump apparatus

A manufacturing method for medical equipment involves electron beam irradiating a titanium or titanium alloy substrate surface that has at least been machined, whereby platelet adhesion of the surface to be contacted by blood is reduced. The manufacturing method for medical equipment can also use a specific pre-processing method and an electron beam irradiation method to reduce the platelet adhesion of the surface which is to be contacted with blood, to suppress the formation of minute depressions (craters) in the surface, which can occur due to the irradiation by an electron beam.

Manufacturing method for medical equipment for reducing platelet adhesion on a surface in contact with blood

A blood pump apparatus comprises a housing, a centrifugal pump section including an impeller and rotating inside the housing to feed a fluid by a centrifugal force, an impeller rotational torque generation section for attracting thereto said impeller and rotating said impeller; and a plurality of grooves for hydrodynamic bearing provided on an inner surface of said housing at a side of said impeller rotational torque generation section, each of the grooves for hydrodynamic bearing having a first side and a second side both extending from a periphery of said portion in which a groove for hydrodynamic bearing is formed toward a central side thereof and opposed to each other, a third side connecting one end of said first side and one end of said second side to each other, and a fourth side connecting said other end of said first side and said other end of said second side to each other; said first side and said second side are formed as a circular arc respectively in such a way that centers of said circular arcs are different from each other.

A centrifugal blood pump apparatus has a centrifugal pump section including an impeller having a first magnetic material therein and rotating inside the housing to feed a fluid by a centrifugal force generated during a rotation thereof; an impeller rotational torque generation section having a rotor having a magnet for attracting the first magnetic material of the impeller thereto, and a motor for rotating the rotor; and a dynamic pressure groove formed at a portion, of an inner surface of the housing, located at a rotor-disposed side thereof. The centrifugal blood pump apparatus further includes an electromagnet for attracting the impeller in a direction opposite to a direction in which the magnet of the rotor attracts the impeller and helping the impeller levitate.

Centrifugal blood pump apparatus

A centrifugal fluid pump apparatus includes a control mechanism including an emergency impeller rotation function. The emergency impeller rotation function includes a rotation termination function when the failure detection function detects a failure; impeller magnetic counterforce application function to apply a current to the electromagnet sufficient to overcome the magnetic attraction force of the rotor to the impeller caused by the magnet; hydrodynamic levitation control detection function to detect rotation of the impeller and the rotor by using a motor current monitored by the motor current monitoring function; motor speed control function for increasing the motor speed up to a predetermined value after the hydrodynamic levitation control detection function detects that the hydraulic bearing coupling between the impeller and the rotor has been made; and impeller magnetic counterforce termination function to terminate current to the electromagnet once the predetermined impeller rotation speed is reached.

Centrifugal fluid pump apparatus

The disclosed infrared sensor comprises a substrate provided with a bridging part and a sensing part made of an infrared temperature-sensitive film formed on the bridging part. A first lid member covers the sensing part and bridging part and a second lid member covers the reverse surface of the substrate and tightly seals a cavity formed between the substrate and the bridging part. The invention preferably comprises an electrode pad electrically connected to the infrared temperature sensitive film and formed of a laminate film including an etchant-resistant electrically conductive film. The invention provides an infrared sensor with a small stable bridging structure which allows easy formation of a contact hole on an electrode pad without causing a breakage of the bridging part. A method for the production of an infrared sensor is also disclosed.

Infrared sensor and method for production thereof

An infrared sensor comprising a sensor substrate formed of a semiconducting material and at least one set of infrared sensing portions formed one each on the opposite surfaces of said sensor substrate, wherein said infrared sensing portions are superposed one each on bride portions formed on cavities formed one each on the opposite surfaces of said sensor substrate.

Growing community of inventors

Kanagawa, Japan

Takehisa Mori