Blood Pumps TRIZ Cases

Secondary flow path flushes rotor clearance to eliminate mechanical bearings, reducing thrombosis and wear while minimizing power consumption.

An insulated purge line delivers oxygenated fluid to sustain motor efficiency while preventing bio-deposit buildup on blood pump components.

Capacitive sensors on the cannula detect signals to determine intracardiac blood pump position without imaging equipment.

Interconnected balloons modulate blood flow via pressure-induced expansion to reduce venous congestion.

Segmented inflow cannula slots prevent heart chamber collapse during suction events while maintaining high blood flow rates.

Potting material reinforces the stator casing of a blood pump, absorbing rotational forces to reduce housing thickness while maintaining mechanical strength.

Elastic support structure prevents balloon rolling in descending aorta, enabling longer-term circulatory support without vascular complications.

A sterile connector uses recessed sidewall channels to deliver fluid during wet-to-wet surgical tubing connections.

A percutaneous circulatory support device uses a frustoconical driven magnet to rotate an impeller and inhibit blood pooling in the proximal housing end.

A miniaturized axial flow rotary pump uses magnetic bearings to enable less invasive implantation.

Flexible tubular membrane pumps blood through a single lumen, eliminating sharp edges that cause clotting.

A distal protuberance on an inflow cannula diverts thrombus particles away from thrust bearings to prevent accumulation and pump malfunction.

An inflatable pump impeller transitions from a compressed delivery profile to an expanded operational volume for blood circulation.

A blood pump impeller generates secondary downstream flow through a central opening to wash bearing surfaces and prevent thrombus formation in low-flow areas.

Segmented formed parts tension a slack membrane against internal pressure, resolving the trade-off between compact introduction and operational stability.

An oscillating drive body moves transversely to propel fluid, eliminating shear forces and construction complexity in sensitive applications.

Segmented formed parts support a tensioned membrane, resolving the contradiction between structural stability and ease of introduction into body vessels.

An axial flow volute redirects blood parallel to the pump axis within an implantable circulatory support device.

A circulatory support device harnesses native respiratory energy to pump blood through an elastic membrane.

A blood pump uses magnetic coupling to rotate an impeller with a screw shaft, preventing stagnation.

FAST sintering replaces toxic cobalt binders in tungsten carbide with precious metals to eliminate cytotoxicity and acidic corrosion.

Reversing roller cell pumps minimize friction losses and pressure surges in heart assistance devices.

Variable cross-section arch-shaped channels minimize shear stress and hydraulic losses in implantable ventricular assist pumps.

Nested magnetic assemblies in the blood pump motor transmit rotation between spaced axes, stabilizing cardiac outflow and reducing heart workload.

Magnetic coupling isolates the dry motor from blood flow, reducing hemolysis risk while maintaining high fluid throughput.

Two-point anchoring distributes pressure across the atrial septum and aortic wall to prevent heart tissue trauma during implantation.

An implantable intravascular shield restricts retrograde flow from the left atrium into pulmonary veins.

A ventricular cuff uses a rigid wire insert to flatten the myocardium and secure a blood pump attachment.

Elastic membrane prosthesis eliminates backflow and suction by mimicking sinus rhythm.

Radial expansion of the pump casing eliminates axial drive forces, reducing wear and hemolysis during deployment.

A wearable cannula tube holder uses a pivot support member to allow vertical and horizontal movement of medical tubing.

Composite materials and flexible shells form a stable seal on the heart wall to limit bleeding and blood leaks during implantation.

An intraatrial ventricular assist device reduces surgical invasiveness by nesting the pump inside the heart and routing blood through the atrial septum.

A static seal structure uses independent sealing elements on a support structure to form hermetic interfaces within a fluid pump housing.

Segmented washout blades direct blood flow through the bearing gap to eliminate stagnant regions that cause thrombus formation.

A segmented artificial chamber buffers central venous pressure fluctuations to stabilize failing Fontan circulation.

A catheter device uses a magnetic clutch to transmit torque from a proximal motor to a distal drive shaft without mechanical seals.

Segmented seals with an intermediate lubricant layer reduce friction-induced hemolysis by conducting heat away from the blood pump interface.

A transmitting antenna and receiving antenna pair transfer power through patient tissue using resonant coupling to maintain stable energy supply.

Pre-stretching the flexible drive shaft stabilizes the impeller against winding-induced movement.

Composite materials and segmentation resolve the trade-off between flexible minimally-invasive delivery and reliable motor-to-impeller connection strength.

Linked pistons in a coaxial driver balance ventricular pressures while reducing device weight.

Guide means and snap-fit mechanisms align bezels during blind implantation, resolving the trade-off between connection speed and alignment precision.

Segmented cannula routing eliminates secondary aortic incisions, reducing thrombosis risk while unloading the left ventricle.

A blood pump pivot bearing accommodates concentricity deviations through spherical point contact, reducing wear and enabling fluid bypass cooling.

Axially spaced collapsible impellers increase cardiac outflow pressure while maintaining a compact profile for minimally invasive insertion.

Asymmetric magnetic coupling stabilizes radial position in a catheter pump drive unit, eliminating vibration and noise during high-speed rotation.

A transmitter housing integrates a heat-insulating element and a heat-conducting element to manage thermal energy during inductive charging.

Segmenting the pump from the catheter enables permanent implantation while minimizing infection risks during insertion.

A dual-configured mechanical blood pumping device with two continuous-flow pumps and a switching mechanism.