US 2016/0228630 A1 · INTRACORPOREAL ARTIFICIAL LUNG

Abstract

The present invention describes a new artificial lung inserted within the human chest. The principles governing functionality of this device are gravity dependent rotation and separation of the oxygen from circulatory system by gravity, different diameters of pores on the oxygen tube with angled channels in the vertical mesh septum and incorporation of one-way valves. Other advantages of the design: it does not contain porous fibers and its inherent resilience and capacitance may play decisive role in long-term management of patients with respiratory failure and substituting need for lung transplants. Moreover, the design has a relatively small prime blood volume and takes into consideration prevention of right ventricular strain by maintaining pulmonary arterial pressure within the physiologic range. It's placement within pulmonary circulation in parallel anastomosis is considered to be least stressful for the heart. The relative simplicity of the device to prior art is another striking advantage.

Claims45

Dependent claims

The artificial lung of claim 1 device is coated with anti-adhesive film/surface like Teflon to prevent blood from fibrin/thrombosis formation within the device.

An artificial lung device comprising:

An oval shaped fenestrated external cover protecting an inner sphere from external compression;
A working chamber of 8-9 cm internal diameter having 200 to 400 ml internal capacity for pulmonary blood and oxygen mix;
A gap between said fenestrated external cover and said working chamber facilitating rotation of said working chamber inside said fenestrated external cover space;
A vertical inter chamber (mesh) 0.5-1.0 cm septum for separation of a blood chamber from an oxygen chamber;
A horizontal 1-2 mm septum having 4-5 mm holes situated in the upper ⅓ of said working chamber and at the level of upper end of said vertical inter chamber septum;
A pulmonary blood tube with 1.5 cm ID having pores over the entire perimeter comprising of an upper pulmonary arterial portion carrying deoxygenated blood from the right ventricle of the heart into said blood chamber and a lower pulmonary venous portion carrying the oxygenated pulmonary venous blood from said blood chamber toward the left atrium of the heart;
An oxygen (O2) tube about 0.5 to 1.5 cm (ID) connected through a high efficiency particulate filter to an oxygen source and having numerous 2 mm (ID) pores situated in the lower ⅓ of said working chamber, across said pulmonary blood tube;
A weight on the bottom of said vertical septum in the wall of said working chamber;
There are 2 one-way valves situated in the roof of the working chamber to vent the gas (CO2 and O2) outside of the working chamber;
and
A rectangular plate fixed on the back of said external cover with 4 to 8 screw points for a screw fixation of said plate to the posterior ribs inside the chest, positioning the working chamber at the level of the heart.

8 more elements

Dependencies are inferred from the claim text.

Intracorporeal artificial lung

Life of this patent

Intracorporeal artificial lung

Life of this patent

Abstract

Claims45