A device for perfusing a coronary sinus of a subject's heart which may include: a double-lumen catheter including: a first lumen having: a proximal opening, and a distal opening configured to be positioned in a coronary sinus of a subject's heart; and a second lumen parallel to the first lumen, the second lumen having: a proximal opening, and a distal opening being offset from the distal opening of the first lumen towards the proximal opening of the second lumen in a longitudinal direction, the distal opening of the second lumen being configured to be positioned in a right atrium of the subject's heart; and an oxygenator connected to the proximal openings of the first lumen and the second lumen, the oxygenator is configured to oxygenate deoxygenated blood.

Provided is an extracorporeal circulator capable of judging a timing suitable for detachment with high accuracy. The extracorporeal circulator includes a blood removal side catheter with a part that can be inserted into a patient and guide the blood taken from the patient; a pump that can take the blood from the patient and return the blood to the patient; a blood transfer side catheter provided downstream of the pump, and that has a part that can be inserted into the patient and guide the blood sent out from the pump back into the patient; a pump rotation speed detection unit that can detect a rotation speed of the pump; and a control system including at least one of an extracorporeal circulation management system that can judge stability of the extracorporeal circulation and a cardiac function measurement system that can judge stability of a heart function of the patient.

A percutaneous catheter for blood removal includes a catheter tube extending in an axial direction with a plurality of distal side holes provided on a distal end part of the catheter tube and communicating a lumen of the catheter with an outside of the catheter tube. The plurality of distal side holes is spirally arranged in the axial direction of the catheter tube, and at least one distal side hole at the proximal end side of the spirally arranged side holes is formed to have a diameter smaller than a diameter of a distal side hole at the distal end side of the spirally arranged side holes.

A percutaneous catheter for blood removal includes a catheter tube extending in an axial direction with a plurality of distal side holes provided on a distal end part of the catheter tube and communicating a lumen of the catheter with an outside of the catheter tube. The plurality of distal side holes is spirally arranged in the axial direction of the catheter tube, and at least one distal side hole at the proximal end side of the spirally arranged side holes is formed to have a diameter smaller than a diameter of a distal side hole at the distal end side of the spirally arranged side holes.

A catheter system insertable into a living body to convey blood has a catheter tube and a stylet. The catheter tube has an expansion portion, a shaft portion, and a lumen. The stylet includes an outer peripheral member that extends in an axial direction and has an outer diameter the same as an inner diameter of the shaft portion, an inner peripheral member provided with an exposed portion exposed from a distal end of the outer peripheral member and provided on an inner periphery of the outer peripheral member so as to be slidable with respect to the outer peripheral member, and a fitting stopper into which a fitting member on an outer periphery of a proximal end of the outer peripheral member is fittable. A region is formed in the fitting stopper in which the outer peripheral member and the fitting member are movable.

A catheter system insertable into a living body to convey blood has a catheter tube and a stylet. The catheter tube has an expansion portion, a shaft portion, and a lumen. The stylet includes an outer peripheral member that extends in an axial direction and has an outer diameter the same as an inner diameter of the shaft portion, an inner peripheral member provided with an exposed portion exposed from a distal end of the outer peripheral member and provided on an inner periphery of the outer peripheral member so as to be slidable with respect to the outer peripheral member, and a fitting stopper into which a fitting member on an outer periphery of a proximal end of the outer peripheral member is fittable. A region is formed in the fitting stopper in which the outer peripheral member and the fitting member are movable.

A catheter for percutaneous cardiopulmonary support has a lumen through which blood flows to a living body. The catheter comprises a catheter tube including a tubular reinforcing body including a plurality of wires braided into a mesh shape and a resin layer provided so as to cover the reinforcing body. A plurality of side holes are formed at a distal end of the catheter tube to communicate the lumen with the outside of the catheter tube. The side holes allow the blood flowing through the lumen to flow out in a direction intersecting an axial direction of the catheter tube when the catheter tube is indwelled. The plurality of side holes preferably may be spirally arranged in a circumferential direction of the tube.

A catheter for percutaneous cardiopulmonary support has a lumen through which blood flows to a living body. The catheter comprises a catheter tube including a tubular reinforcing body including a plurality of wires braided into a mesh shape and a resin layer provided so as to cover the reinforcing body. A plurality of side holes are formed at a distal end of the catheter tube to communicate the lumen with the outside of the catheter tube. The side holes allow the blood flowing through the lumen to flow out in a direction intersecting an axial direction of the catheter tube when the catheter tube is indwelled. The plurality of side holes preferably may be spirally arranged in a circumferential direction of the tube.

A pump for mimicking physiological blood flow in a patient is disclosed. The pump works via compression and decompression of a tube, inducing a peristaltic flow within the tube. The compression may be effected by a linear actuator, or alternatively by a pivoting compression member. A one-way check valve ensures flow in a single direction.

The present invention relates to a catheter that minimizes or eliminates the recirculation of oxygenated blood. The catheter of the present invention can be used to drain blood from multiple points in the patient, namely the superior vena cava, right atrium, and the right ventricle, while returning blood to the patient's pulmonary artery. Further, the catheter of the present invention is less likely to be moved or dislodged than catheters currently available in the art, thus making the catheter particularly useful for portable lung assist devices. The present invention also relates to methods for inserting the catheter into the patient and using the catheter with a lung assist device.