Cardiac function evaluation system
AssigneeOrgan Transport PTY LTD
InventorsRuchong Ou, John Woodard, Jonathan Cavendish Nevile
Life of this patent
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Abstract
A device adapted for determining cardiac viability, wherein said device includes: a cannula having a hollow body and at least a distal end adapted for insertion into a heart and operator end for adapted for an operator to position the catheter in the ventricular apex and adapted for connection to a plumbing system; an inflatable balloon positioned near to the distal end in fluid communication with the hollow body to allow for selected inflation of the balloon, a controller adapted to calculate the viability of the heart from pressure data detected within cannula or balloon which is inflated to various degrees with an incompressible fluid.
Claims11
A device for a cardiac procedure on a heart of a human prior to implantation, said device comprising:
- a first cannula having a hollow tubular body and at least a distal end for insertion into the heart of the human and an operator end adapted for an operator to position the first cannula within a region defined by an interior surface of a ventricular apex and adapted for connection to a fluid pressuring device and a pressure transducer;
- a second cannula having a hollow tubular body joined in parallel with the hollow tubular body of the first cannula, the hollow tubular body of the second cannula comprising a number of holes to vent a ventricle of the heart across a mitral or a tricuspid valve thereof;
- a curved extension joined to the distal end of the first cannula;
- and
- an inflatable balloon positioned near to the distal end in fluid communication with the hollow tubular body of the first cannula to allow for selected inflation of the balloon;
- wherein the pressure transducer is attached to the first cannula or the balloon;
- wherein the balloon has a differential gradient of material to allow for differential zones of expansion;
- wherein the curved extension is collapsible;
- and
- wherein the curved extension is relatively more flexible than the hollow tubular body of the first cannula.
A device for determining cardiac viability, the device comprising:
- a first cannula having a hollow tubular body, the first cannula for insertion into a region of a heart defined by an interior surface of a ventricular apex;
- a second cannula having a hollow tubular body joined in parallel with the hollow tubular body of the first cannula, the hollow tubular body of the second cannula comprising a number of holes to vent a ventricle of the heart across a mitral or a tricuspid valve thereof;
- an inflatable balloon attached to the hollow tubular body of the first cannula near a distal end thereof, the inflatable balloon in fluid communication with an interior of the hollow tubular body of the first cannula to allow for selected inflation of the inflatable balloon, the inflatable balloon having a differential gradient of material that allows the inflatable balloon to have differential zones of expansion;
- a pressure transducer attached to the first cannula or the balloon;
- an expandable cage attached to the hollow tubular body of the first cannula;
- and
- a sleeve slidably disposed about the hollow tubular body of the first cannula, the sleeve for expanding the expandable cage when it is slidably moved against the expandable cage.
Dependencies are inferred from the claim text.