Apparatus for tissue transport and preservation
Systems and methods of the invention generally relate to prolonging viability of bodily tissue, especially lung tissue, through the use of an expandable accumulator to maintain a constant pressure within the lumen of the organ even during external pressure fluctuations due to, for example, flight. Systems and methods may include prolonging donor organ viability in storage through the use of an organ container that mimics the geometry and orientation of the organ in vivo.
1. A system for storage of an organ, the system comprising:
an expandable accumulator comprising an expandable inner volume; and
an organ adapter comprising a lumen in fluid communication with the expandable inner volume and configured to be coupled to a lumen of an organ to form a closed air system between the expandable inner volume and the lumen of the organ,
wherein the expandable accumulator has an expansion resistance that is less than the expansion resistance of the lumen of the organ such that the expandable inner volume is operable to expand and contract in response to changes in ambient pressure to maintain a desired pressure differential between the lumen of the organ and a variable ambient pressure, and
wherein the expandable accumulator, organ adaptor, and organ are all contained within an organ container.
2. The system of claim 1 , wherein the organ is one or more lungs and the lumen of the organ is selected from the group consisting of a trachea or bronchus of the one or more lungs.
3. The system of claim 1 , further comprising an inlet comprising a lumen and coupled to the expandable accumulator by an inlet valve such that the lumen of the inlet is in fluid communication with the lumen of the organ when the inlet valve is opened and the closed air system between the expandable inner volume and the lumen of the organ is formed when the inlet valve is closed.
4. The system of claim 1 , further comprising one or more sensors configured to sense a parameter within the system.
5. The system of claim 4 , wherein the parameter is selected from the group consisting of temperature and pressure.
6. The system of claim 1 , wherein the expansion resistance of the expandable accumulator is adjustable.
7. The system of claim 2 , wherein the organ container further comprises a raised central portion configured to be placed against an organ within the organ container.
8. The system of claim 1 , wherein the expandable accumulator comprises a bellows.
9. The system of claim 1 , wherein the expandable accumulator comprises a weight that provides the expansion resistance of the expandable accumulator.
10. The system of claim 1 , wherein the expandable accumulator comprises a spring that provides the expansion resistance of the expandable accumulator.
11. The system of claim 1 , wherein the expandable accumulator comprises an expandable bladder comprising an elastic material wherein the elastic material provides the expansion resistance of the expandable accumulator.
12. The system of claim 1 , wherein the expandable accumulator comprises a rolling diaphragm.