Hiroshima University

Goodman Co., Ltd.

Josho Gakuen Educational Foundation

Taijiro Sueda

Yuichiro Matsuura

Shintaro Fukunaga

Masaaki Kudo

Shinji Ninomiya

Naoya Okamura

Masanobu Watari

Shinya Takahashi

Tatsuya Kurosaki

The stent graft () comprises a cylinder comprising a graft material in the form of a film and a stent that supports the cylinder. Further, the stent graft () is inserted within a region from the ascending aorta to the sinus of valsalva, and the stent graft comprises cylindrical body section () arranged in the ascending aorta and the sinus of valsalva section () arranged in the sinus of valsalva and having an inner diameter larger than that of the body section ().

Stent graft

A blood supply flow rate controlling device (), which is a device for controlling the blood supply flow rate in an extracorporeal circulation device connected to a living body (), includes rotational frequency detecting means that detects the rotational frequency of the centrifugal pump () of the extracorporeal circulation device, inlet pressure detecting means and outlet pressure detecting means that detect the inlet pressure and the outlet pressure of the centrifugal pump (), respectively, flow rate regulating means that regulates a flow rate of blood supplied to the living body by adjusting a flow path cross section area of the blood circulation circuit (), and controlling means that controls the flow rate regulating means.

Blood feeding flow rate-controlling device and extracorporeal circulation device

The evoked spinal cord potential monitoring apparatus of the present invention includes: a pair of electrodes; and a holding sectionfor holding the pair of electrodes, a tip section of each of the electrodesbeing extended outwards from an end of the holding section, and the electrodesbeing movable relative to the holding sectionA hook sectionengageable to an intercostal nerve is provided at the tip section of each of the electrodes, and the electrodesor the holding sectionis moved while the hook sectionis coupled to the intercostal nerve such that the hook sectionand the holding sectionare able to hold the intercostal nerve therebetween. The apparatus requires no preoperative preparation, is capable of coping with an emergency case, and further, is unsusceptible to the influence of anesthetics.

Evoked spinal cord potential monitoring apparatus and evoked spinal cord potential monitoring system

A check valve includes a casing member, a tear-drop shaped ball member installed in the casing member, a latching member which is formed at an inner wall of the casing member and an airtight valve which is formed at an inner wall of the casing member. When forward flux occurs, the ball member is fixed at the latching members absolutely to circulate the forward flux stably. When backward flux occurs, the ball member is latched at the airtight member to close the casing member and thus, to suppress the backward flux.

Check valve, auxiliary circulating device and method for driving the auxiliary circulating device

When both the IABP and the PCPS are used, they exhibit an excellent circulation assisting effect. In this case, however, sequela such as hypoxic encephalopathy may well occur after the heart failure is remedied. The invention provides an intraaortic balloon catheter capable of preventing such sequela. The balloon catheter of the invention includes a catheter main body part which is to be inserted into an aorta, and a balloon section formed on an outer peripheral portion of the catheter main body, to be inserted into the aorta together with the main body, and to be expandable and contractible in the aorta under the control of the IABP. An end portion of the catheter main body functions as an introductory portion of the catheter, and has a blood feed hole formed therein for introducing, into an artery such as the aortic arch, arterial blood of high oxygen concentration fed from a circulation assisting unit such as the PCPS. The catheter main body has a blood feed passage communicating, at one end thereof, with the blood feed hole which leads to the aorta, and communicating, at the other end thereof, with a PCPS connection port. The blood feed passage is used for sending the arterial blood of high oxygen concentration to the aorta via the blood feed hole.

Intraaortic balloon catheter with blood feed passage formed therein for

A cardiopulmonary function assisting device includes a gas guide tube of which peripheral wall does not transmit gas or liquid such as blood and has a suitable rigidity and a suitable flexibility. A header is coaxially attached to an opening at the distal end of the gas guide tube. A plurality of balloons are attached to the distal end of the header. The balloons are formed of a gas permeable film and left in a blood vessel. Oxygen is supplied to the balloons through the gas guide tube, thereby expanding the balloons; oxygen is discharged from the balloons, thereby contracting the balloons. The expanding and contracting operations are repeated. As a result, when the balloons are expanded, oxygen is transmitted through the balloons and added to blood on the periphery of the balloons and the expanded balloons remove the blood away from the periphery. When the balloons are contracted, the periphery of the balloons is filled with blood.

Growing community of inventors

Hiroshima, Japan

Taijiro Sueda