Extracorporeal circuit devices can be used for on-pump open-heart surgery to support surgical procedures such as coronary artery bypass grafting. In some cases, a centrifugal pump is used as part of an extracorporeal circuit. Centrifugal pump heads are described herein that induce flow on two sides of an impeller plate, and that can be conveniently mechanically assembled.

Extracorporeal circuit devices can be used for on-pump open-heart surgery to support surgical procedures such as coronary artery bypass grafting. In some cases, a centrifugal pump is used as part of an extracorporeal circuit. Centrifugal pump heads are described herein that induce flow on two sides of an impeller plate, and that can be conveniently mechanically assembled.

Devices and methods for enhancing the operations of fluid systems are provided. For example, this document provides variable-elevation drop tubes that are well suited for use with medical fluid reservoirs. While the variable-elevation drop tubes provided herein are described in the context of a medical fluid system, such as an extracorporeal blood flow circuit, it should be understood that the devices and methods provided herein are not limited to such contexts.

The disclosed device, systems and methods relate to a novel catheter, system and methods. Exemplary embodiments comprise a plurality of lumens and balloons for insertion into the aorta and vena cava. These catheters are for use in cardiopulmonary resuscitation and other medical or surgical conditions that require emergency restoration of cerebral and cardiac blood supply.

Apparatus and methods for providing extracorporeal blood circulation and oxygenation control include seven-stage de-airing of blood to provide automated cardiopulmonary replacement to sustain patient life during a medical procedure comprising repairing or replacing the heart valve in a patient.

A catheter 30 includes a tube 31 provided with a tubular reinforcing member 311 having a plurality of wires W braided to intersect one another and a plastic layer 312 that covers the reinforcing member. The catheter 30 includes a pair of rings 32 and 33 configured to sandwich a distal end 311A of the reinforcing member from the inner periphery and the outer periphery.

A cannula system for cannulating a blood vessel comprising a collet comprising at least a first collet wing and a second collet wing and defining a collet lumen, where each of the first collet wing and the second collet wing define a distal end and a proximal end; a cannula positioned within the collet lumen; a latch defined on the distal end of the first collet wing; and a coupler defined on the distal end of the second collet wing and configured to couple to the latch of the first collet wing, thereby securing the first collet wing to the second collet wing.

A method for filling and venting a device for extracorporeal blood treatment is disclosed, such as a patient module in a heart-lung machine, without attached patient. A filling liquid from a filling liquid container located higher than the device flows by gravity via a venous side of the system into a reservoir and flows onwards into a blood pump located at the lower end of the reservoir, wherein a first controllable valve (HC1) for a venting line of a filter is opened and, after the response of an upper filling level sensor in the reservoir, is closed. An upper level of the filter is positioned higher than the upper filling level sensor, and a start-stop motion of the blood pump is performed, as a result of which a stepped flooding of the filter is made providing for an advantageous de-airing of the device.

Embodiments include a vacuum assisted venous drainage (VAVD) system, including a regulator valve assembly configured to facilitate application of vacuum to a reservoir; a control unit configured to control the regulator valve assembly to facilitate controlling application of the vacuum; at least one pressure sensor coupled to the reservoir and configured to obtain pressure measurements of pressure in the reservoir; a heating element configured to heat the regulator valve assembly to a target temperature; and at least one temperature sensor configured to determine a temperature of the regulator valve assembly.

A method and devices for mitigating the risk of limb ischemia includes inserting a femoral arterial cannula into a femoral artery of a limb, the femoral arterial cannula having a low-profile balloon to seal the femoral artery. Once in situ in the femoral artery, the femoral arterial cannula balloon is inflated to seal said femoral artery to deliver blood flow in a retrograde direction to said limb while simultaneously delivering systemic arterial blood flow. A femoral venous cannula is also inserted into a femoral vein of said limb, the femoral venous cannula having a broad-profile balloon to seal the femoral vein. Once in situ in said femoral vein, the femoral venous cannula balloon is inflated to seal the femoral vein to drain venous blood flow from the limb while simultaneously draining systemic venous blood flow.