Other Blood Circulation Devices TRIZ Cases

By calculating evaporative water loss from sweep gas flow and outlet saturation, the control unit keeps extracorporeal blood fluid balance accurate.

A drain bag priming circuit removes air bubbles before replacement, enabling rapid blood treatment device swaps with less blood loss and downtime.

Acoustic signature monitoring spots irregular dialysis machine sounds and triggers prompts or reboots to address venous disconnects and pump faults.

A self-contained water purification unit makes dialysis easier to deploy across homes and hospitals while adapting to different water sources.

A drip chamber with the red blood cell tube ending in the reservoir prevents blood pullback during pumping and improves compact target cell collection.

Force-sensed roller blocks automatically adjust tubing occlusion to maintain stable perfusion flow without over-compressing blood tubing.

Opposed 180° inlets and a dual-diameter chamber improve air separation while reducing stagnant flow, shear stress, and manual priming steps.

Porous hollow fibers and vacuum-assisted venting remove trapped air during oxygenator priming, lowering air emboli risk and setup time.

A narrowed central stent section regulates dialysis graft or fistula flow to stabilize pressure, improve patency, and reduce thrombosis risk.

Measured hematocrit, collection volume, and RBC flow rate let the controller calculate actual red blood cell recovery after separation.

Continuous hematocrit tracking flags vascular access recirculation during hemodialysis, helping clinicians correct line placement and maintain treatment efficacy.

A receptacle and pump sequence diverts gas bubbles from fluid lines, protecting product integrity and improving aliquot transfer accuracy.

Automatic detection of specification features such as color markings verifies medical functional unit compatibility before treatment starts.

Segmented protective sheaths and a bypass filter capture emboli, maintain branch vessel perfusion, and return filtered blood to reduce loss.

Cross-connected protective contacts create redundant grounding for medical fluid lines, simplifying safety checks while maintaining patient protection.

Air bubble detection and valve diversion protect acoustic flow measurement, improving on-demand dialysate purity and concentration accuracy.

A soft cassette body replaces hard resin to enable autoclave sterilization, lower manufacturing cost, and simplify blood return layout.

A flexible distal slit and side pores reduce catheter insertion resistance, maintain blood flow, and help prevent vessel wall sticking.

A hybrid stainless steel and ceramic bearing eliminates lubricant, rust, and abrasion sources that can contaminate blood plasma and red cells.

A size-selective blood filter retains circulating cancer cell clusters while letting individual cells pass, helping lower metastasis-linked cluster levels.

A hybrid ECMO oxygen reserve switches between wall supply, concentrator, and tank support to maintain oxygenation during ambulation.

Structured light projection and image analysis monitor dialysis vascular access non-invasively to flag stenosis early and guide needle placement.

Warm, moist oxygen discharged from an ECMO oxygenator is captured for nasal cannulation, reducing extra oxygen equipment during ambulation.

Stored dialyzer scaling curves let bypass time vary while still estimating blood inlet values accurately, reducing treatment interruptions.

Negative pressure in the dialysis fluid circuit moves fluid and then air across the membrane to fully empty the dialyzer and cut disposal weight.

Continuous centrifuge rotation separates plasma while returning unwanted blood components, cutting donation time and improving donor comfort.

Automatic comparison of actual and target blood values generates corrected treatment settings, reducing manual input errors and improving patient safety.

Sequential centrifugation with a PEG-DEX two-phase solution isolates extracellular vesicles from blood or bone marrow with less contamination and sample loss.

A pneumatic diaphragm pump uses bistable mechanical switching to deliver pulsatile blood flow with lower shear, less cavitation, and no electronics.

Pump flow changes and arterial oxygen saturation shifts enable non-invasive cardiac output measurement in VV ECMO despite recirculation.

A patient-connected closed loop uses apheresis and magnetic separation to enrich target cells at the bedside with less manual handling.

A flattened carotid clamp and artery-to-vein shunt create retrograde flow that diverts emboli away from the brain during stenting.

Flow path insulators split used dialysis fluid into segments, breaking the patient-to-drain current path while preserving drainage.

Monitoring ultrafiltration, blood volume, and sodium trends triggers blood pressure checks at critical dialysis time points to catch hypotension early.

Pressure-based valve checking allows special-mode flow only toward the drain, preventing used fluid from entering fresh treatment fluid paths.

Extracorporeal blood cooling uses heat exchange, pumping, and feedback control to rapidly induce and hold 32-36°C hypothermia with fewer complications.

Controlled retentate and permeate recirculation keeps cross-flow filters at target pressure while limiting solute buildup, fouling, and power use.

A magnetically levitating pump rotor built into the dialyzer cuts setup steps and extracorporeal tubing while lowering hemolysis risk.

A rotating fluid-line loop lets the centrifuge keep spinning while unwanted blood components are returned, shortening donation time and donor discomfort.

Automatic blood return and circuit-ready control let extracorporeal treatment pause without device replacement, cutting time, waste, and effort.

Pre-connection gas discharge and suction keep the O-ring sealing interface clean, improving pressure accuracy and fluid flow reliability.

Streptavidin-coated microbubbles and pore-sized membranes isolate target cells with high purity while avoiding strong magnets and contaminant-heavy processing.

Blue light and ultrasound are combined to break down the viral lipid layer and core while limiting tissue damage during non-invasive treatment.

Multiple UV treatment chambers and integrated scanning raise biological fluid throughput while reducing setup errors and manual reconfiguration.

Acoustic radiation moves cells between co-flow buffers in seconds, enabling timed electroporation exposure with higher viability.

A sterile barrier and sequester wheel enable single-cycle blood separation with simpler extraction, less handling, and lower contamination risk.

Streptavidin-coated microbubbles and size-selective membranes isolate target cells without strong magnets, reducing contamination and equipment burden.

A shape-changing cannula tip enters small vessels at low profile, then expands to grip the vessel wall without a dilator or bulky securement.

A pre-defined closed fluid pathway processes whole blood and reinfuses treated cells without disconnection, reducing contamination risk and delay.