Control Devices TRIZ Cases

Hydrodynamic thin-film bearings and magnetic actuation enable compact LVAD pumping with pulsatile flow and lower hemolysis risk.

Partial infra-renal vena cava occlusion with physiological feedback lowers cardiac preload and renal venous pressure to improve perfusion.

Combining ventricular and aortic pressure signals improves patient health assessment precision while keeping monitoring practical and reliable.

Wire-compressed pumping chambers and a central actuator create compact pulsatile flow that lowers blood stress and improves artificial heart durability.

Pressure-sensor feedback and ideal-gas volume calculation simplify multi-line APD fluid control while improving diaphragm pump dosing accuracy.

Deployable petals anchor a left atrial implant while diastolic-only pumping boosts left ventricular filling without right-heart overloading.

Wave-like electromagnetic membrane actuation drives partial circulatory support while lowering shear stress, thrombosis risk, and blood damage.

Expandable petal anchoring stabilizes a percutaneous interatrial implant that boosts diastolic filling while avoiding right ventricular overload.

Beat-to-beat pump current analysis estimates cardiac preload, helping adjust impeller speed to prevent ventricular overfilling or underfilling.

Active fluid channels cool the drive shaft and motor in a temporary blood pump, keeping patient-contacting surfaces below safe heat limits.

Bone-anchored fixation transfers implant load to the sternum, reducing heart strain while enabling external compression support.

A proximal sensor housing on the catheter protects the pressure sensor during deployment and improves pressure reading accuracy in heart pumps.

Distinguishable cholate tracers and compartmental modeling separate native and extracorporeal liver clearance for more reliable function assessment.

Mechanical unloading with a transvalvular pump before reperfusion helps limit microvascular obstruction after acute myocardial infarction.

A heated LVAD cannula with temperature sensing enables continuous, precise blood flow measurement without surgical dilution catheters.

Outward-facing pericardial electrodes capture ECG signals for timed heart compression while reducing epicardial irritation and conduction disruption.

Synchronized support pulses with reduced weaning energy help maintain flow while easing the heart off extracorporeal assistance.

A collapsible cannula and movable impeller let this heart pump fit percutaneous insertion yet expand to deliver full cardiac flow support.

Removing radial post extensions and adding spacers reduces parasitic flux and heat, improving torque in compact intravascular blood pumps.

Parallel external IABP balloons raise low cardiac output by drawing and returning blood through a shared catheter while limiting turbulence and blockage.

An external diaphragm cavity boosts aortic counterpulsation by drawing and pushing blood through a catheter, raising cardiac output and reducing turbulence.

A biocompatible MEMS pressure sensor with a flexible membrane helps artificial hearts regulate blood flow and correct circulatory imbalance.

Motor current normalization with pressure sensing improves heart pump position detection and reduces false alarms from misplacement.

A shaft-mounted pump element drives purge fluid through the bearing bore, removing the external pump while blocking blood ingress.

Dynamic inflow and outflow control adapts myocardial perfusion to changing physiology, limiting pressure, congestion, and arrhythmia risk.

A locking triplex holder keeps ECMO pump and oxygenator aligned on the console, enabling safer single-person transport through tight spaces.

Mechanical left ventricular unloading before coronary reperfusion helps limit ischemia-reperfusion injury, infarct size, and heart failure.

A closed hydraulic pump transfers force to the heart from outside the muscle, reducing wear for sustained implantable cardiac assistance.

An extracorporeal respiratory chamber drives a large counterpulsation balloon to raise cardiac output beyond IABP limits while maintaining safe blood flow.