Jms Co., Ltd.

Kitakyusha Institute of Biophysics Co., Ltd

Kitakyushu Institute of Biophysics Co., Ltd.

Kunihiko Yamanaka

Sung-Teh Kim

Katsunori Masaoka

Naritomi Maeda

Masahiro Taoka

Hiromu Miura

Katunori Masaoka

Kayoko Segawa

Yoshihiko Nakanishi

Chieko Yamamoto

Takaaki Matsuo

Tieko Yamamoto

According to the present invention, there is provided a hemodiafiltration apparatus capable of easily and efficiently removing medium to large molecule solutes at a low cost. Provided is a hemodialysis apparatus which uses a hemodialyzer accommodating a hollow yarn membrane in hemodiafiltration to cause a dialysis fluid to flow from a dialysis fluid circuit side to a blood circuit side by forceful back-filtration via the hemodialyzer, and to cause a fluid in the blood circuit to reflux to a dialysis fluid circuit side by filtration via the hemodialyzer, the hemodialysis apparatus being characterized in that a flux operation of the fluid from the dialysis fluid side to the blood circuit side by the back-filtration, and a reflux operation of the fluid from the blood circuit side to the dialysis fluid circuit side by the filtration are repeated intermittently and for at least a plurality of times.

Hemodialyzer capable of intermittent repetition of infusion and water removal operation

A single needle hemodiafiltration apparatus is provided. The single needle hemodiafiltration apparatus includes circuits for blood supply from a patient and blood return to a patient, a dialysis fluid supply system for supplying a dialysis fluid, and a system for controlling the blood flow and dialysis fluid flow in a separation device which is equipped to perform filtration and back-filtration operations. A controller is provided that controls, in a series of coordinated operations, the flow of blood from the patient into the separation device, the flow of filtration fluid and back filtration fluid, and the return of blood to the patient.

Apparatus for blood dialysis and filtration

An automatic dialyzer for purifying blood brought into contact with a dialysate via a semi-impermeable membrane. The dialyzer includes at least a blood circulating system and a dialysate supply/discharge system, wherein the blood line of the blood circulating system is connected to an overflow line having a reversibly-rotatable blood pump, a blood chamber, and an open/close device for overflowing of liquid from the blood chamber to the outside of the blood line. Liquid supply means is provided to a first bypass line and/or a second bypass line for supplying liquid in both forward and reverse directions to enable regulation of the supply amount of the dialysate for water removing/liquid replenishing. The supply speed of the liquid supply device and the supply speed of the blood pump are regulatable in conjunction with each other. Also provided is a dialyzing method using the automatic dialyzer.

Automatic dialyzer and dialyzing method

The present invention provides a dialysis coupler assembly comprising a pair of rubber-like elastic tubular couplers, and a pair of joint members for joining the couplers together. Each of the couplers includes an inner channelallowing a connector associated with a medical device to be fitted therein, and a smooth surfaceperpendicular to the longitudinal axis of the coupler. The couplers are adapted to be joined together through the joint members in such manner that the smooth surfaces are in liquid-tight contact with one another. Each of the joint members is adapted to be attached slidably and rotatably onto corresponding one of the couplers, the joint members having first and second engagement portions, respectively. The first and second engagement portions are disposed opposed to one another and adapted to cooperatively engage the joint members with one another so as to allow the smooth surfaces to be brought into liquid-tight contact with one another.

Dialysis coupler assembly with joint members and hemodialysis system using same

Growing community of inventors

Hiroshima, Japan

Kunihiko Yamanaka