Nipro Corporation

Shiga, Japan

Nipro Corporation

Shiga, Japan
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Patent
Nagoya University and Nipro Corporation | Date: 2017-05-17

Provided is a locking plate system for treatment of a distal radius fracture, intended to improve cooperation between screw anchors made of metal and a plate made of resin as well as to enhance matching with respect to the radius. The radius locking plate (4) is a flat laminate of intermediate molding materials that each include carbon fibers as reinforcing material and thermoplastic resin as a matrix. The screw anchor (5) includes a shaft portion (10) which has a principal thread (13) achieving a self-tapping action formed thereon and an outer circumference of a head portion of the screw anchor (5) which has an auxiliary thread (13) achieving a self-tapping action tapped thereon. A diameter of a through-hole (6) in the radius locking plate (4), which allows the radius main body (3) and the fractured bone piece (2) to be threadably fixed to the radius locking plate (4), is oversized relative to the principal thread (11), and is undersized relative to the auxiliary thread (13).


Patent
Yamanashi University, School Juridical Person The Kitasato Institute and Nipro Corporation | Date: 2017-05-17

A blood purifier comprises hollow fiber membranes allowing blood to flow inside and allowing a dialysing fluid or a filtrated fluid to flow outside. The hollow fiber membrane has an effective length of 10 mm or more and 150 mm or less. A maximum value of a permeation flux Jv obtained by dividing a volume of a permeate fluid permeating through the hollow fiber membranes by a membrane area of the hollow fiber membranes and time, is represented as Jvmax. A linear velocity of blood flowing in the hollow fiber membrane is represented as uB. A pressure difference between blood flowing inside the hollow fiber membranes and a fluid flowing outside the hollow fiber membranes is represented as TMP. When a filling blood volume into the hollow fiber membranes per unit membrane area is 20 mL/m^(2) or more and 35 mL/m^(2) or less and Jvmax/uB has a value of 0.00015 or more and 0.0006 or less, satisfied is a condition in which a TMP change rate has a value of 0.95 or more and 1.05 or less.


Patent
Nipro Corporation | Date: 2017-02-15

Provided is a medical valve of a novel structure, which is able to more reliably support an outer peripheral part of an elastic valve body with respect to a housing, and prevent a problem of the elastic valve body becoming dislodged inward. A medical valve (10) includes an elastic valve body (16) with annular grooves (76, 74) formed thereon and a tubular support part (70) formed at an outer peripheral side of an annular joining part (72) positioned between the annular grooves. Inside and outside holding parts (20, 18) engage the annular grooves (76, 74) provided to the valve inside and outside surfaces of the annular joining part (72). The outside holding part (18) and inside holding part (20) are provided to an opening member (12), and with the tubular support part (70), a part projecting inward in an axial direction (82) is sandwiched and supported between the inside holding part (20) and outside holding part (18).


Patent
Nipro Corporation | Date: 2017-01-18

A needle assembly (1) includes a cover (5)(7) provided to be movable to a first position where a cannula (2)(3) is exposed and a second position where a distal end projects further than the cannula. In the cover, circumferential-direction locking sections (25)(43) or front-back-direction grooves (24)(42) continuing to the circumferential-direction locking sections or engaging protrusions (5a)(33a) movable along the circumferential-direction locking sections and the front-back-direction grooves are provided. In a state in which the cover is located in the first position and the engaging protrusions are housed in the circumferential-direction locking sections, movement in a front-back direction of the cover is blocked. When the engaging protrusions move along the circumferential-direction locking sections and move to the front-back-direction grooves, the engaging protrusions become movable along the front-back-direction grooves and allow the movement to the second position of the cover. Projecting sections to the outside are reduced as much as possible and movement of the cover due to a malfunction is prevented.


Patent
Nipro Corporation | Date: 2017-05-31

[Problem] To provide a balloon catheter capable of increasing the temperature of a blood vessel contacting a balloon to a target temperature in a short time by efficiently heating a heat generating member. [Solution] A balloon catheter (10) has a shaft (12) having an elastically expandable balloon (11) on the distal end side and space provided inside and allowing a fluid to flow into and flow out the balloon (11), a heat generating member (22) provided in the internal space of the balloon (11), and optical fibers (20A, 20B) which are extended up to the internal space of the balloon (11) along the shaft (12) and emit light beams input into the proximal end to the heat generating member (22) from the distal end.


Patent
Nipro Corporation | Date: 2017-01-11

Provided is a blood reservoir equipped with a filter having a treatment capacity desired by a health worker. A health worker managing a blood reservoir can comprehend the amount of stored blood more accurately. Furthermore, bubbles are prevented from being mixed into blood after bubbles are removed therefrom. A filter member (52) of a blood reservoir (1) is a filter member for removing foreign matters and bubbles from the blood. The filter member (52) is equipped with a first filter portion (52a) and a second filter portion (52b). The first filter portion (52a) forms the wall portion and the second filter portion (52b) forms the bottom portion. Specifications of the first filter portion (52a) and the second filter portion (52b) are different. The guide member (60) of the blood reservoir (1) consists of foaming material. The blood from which bubbles are removed are thereby led in a state where the blood permeated the guide member (60). Consequently, the guide member (60) can lead the blood from which bubbles are removed to a predetermined position at an appropriate landing speed.


Patent
Nipro Corporation | Date: 2017-03-22

In a blood purification device containing a blood purifier (1), a blood circuit (2), a blood pump (3), and a dialysate line (4) having a fresh dialysate supply line (41) and a used dialysate discharge line (42), a pair of plunger pumps (51, 52) are disposed in the dialysate line (4). The pair of plunger pumps (51, 52) are synchronized so that delivery of a fresh dialysate from one plunger pump (51) and suction of a used dialysate into the other plunger pump (52) simultaneously occur and the stroke of at least one of the pair of plunger pumps (51, 52) is made variable.


Patent
Nipro Corporation | Date: 2017-02-22

A filter device (10) has a catheter (11) having a lumen (20), a shaft (12) extended in the longitudinal direction from the lumen (20), and a filter (13) capturing an embolus. The filter (13) is connected to the shaft (12) through a slide ring (23) at the distal end thereof. The shaft (12) is inserted into and passed through the ring (23). The ring (23) is rotatable with respect to the shaft (12) and slidable in the longitudinal direction. When the filter (13) is expanded in a blood vessel (30), the ring (23) slides on the shaft (12). The filter (13) is connected to the shaft (12) through another ring (24) on the peripheral edge of an opening (21). The shaft (12) is inserted into and passed through the ring (24). The ring (24) is rotatable with respect to the shaft (12). The ring (24) is held between a pair of stoppers (25, 26) fixed onto the shaft (12). Therefore, the movement of the ring (24) in the longitudinal direction with respect to the shaft (12) is prevented.


Patent
Nipro Corporation | Date: 2017-02-08

A syringe (1) includes a barrel (10), a plunger, an injection needle (30), and an injection needle safety instrument (40). The injection needle safety instrument (40) has a base portion (41) fixed to the barrel (10), a cover portion (42) which can cover a pointed end of a needle tube (31) included in the injection needle (30), and a hinge portion (43) which pivotably couples the base portion (41) and the cover portion (42) to each other. The cover portion (42) is constructed to be pivotable between a first position at which the cover portion is held to the base portion (41) as a first locked portion (42c) is locked by a locking portion (41c) of the base portion (41) and a second position at which the cover portion covers the pointed end of the needle tube (31) and is held to the injection needle (30) as a second locked portion (42b) is locked to the injection needle (30). The cover portion (42) is tilted toward the barrel (10) while it is arranged in the first position.


Patent
Nipro Corporation | Date: 2017-04-26

A blood circuit connector (100) includes: a main body (110) having a cylindrical shape and provided with a first opening end (120) and a second opening end (130); a plug (140) having a bottomed cylindrical shape and detachably attached to the first opening end (120); and a connection part (150) configured to connect the main body (110) and the plug (140). The plug (140) includes a side wall (142) loosely fitted to an outer circumferential surface (111) of the first opening end (120) in a state where the plug (140) is attached to the first opening end (120). The connection part (150) includes a curved part (155) expanding in a direction away from the main body (110). In the attached state, the curved part (155) is pushed in a direction approaching the outer circumferential surface (111) of the main body (110) such that the curved part (155) extends, thereby cancelling a loosely fitted state between the side wall (142) and the outer circumferential surface (111), so as to remove the plug (140) from the first opening end (120).

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