Medical Devices TRIZ Cases

A negative pressure wound therapy system uses pump operational data to identify suction tube blockages without extra sensors.

Disposable hemodiafiltration circuit with bifurcated supply line and expansion chamber resolves difficult coupling to monitoring machines.

A symbol-based method uses geometric shapes to represent conscious and unconscious thoughts for achieving mental balance.

Segmented cavities driven by low-voltage solid-state amplifiers reduce size and weight while delivering medically usable beam power.

A dressing connector integrates pH, humidity, and temperature sensors to detect tissue site conditions.

A melting device uses heating bags and a suction mechanism to rapidly thaw bio-derived frozen products while maintaining hygiene.

A gastric jejunal feeding tube uses an internal spring to maintain patency during navigation through tortuous pediatric anatomy.

An asymmetric nebule receiver prevents incorrect drug usage while a puncture pin activates the generator.

Capacitive actuation detection tracks inhaler doses via electrical field changes, reducing false counts from incidental movement.

Segmented barrel and plunger maintain gas flow paths to prevent trapped gas and suction effects that cause flatulence and drug expulsion.

A self-cleaning needleless connector uses a rotatable cover with an abrasive surface to mechanically scrub the inlet.

A syringe pump detects plunger position to dynamically adjust occlusion thresholds and pressure reduction actions.

A wearable biosensor uses a cell layer to detect physiological changes in bodily fluids through transdermal fluid contact.

A receiving chamber uses a movable structure selector to adapt its internal geometry for different consumable shapes.

An asymmetric frame aligns an IV set within a modular pump device while an information device stores compatibility data.

A connecting structure with a guide part and engaging component links fluid supply tubes to gastrostomy catheters.

An applicator uses an integrated abrading element to convert solid unit dosage forms into powder within the barrel.

A subcutaneous therapeutic delivery device uses a compliant elastic reservoir and rate-controlling membrane to maintain high local antibiotic concentrations.

Integrating the cannula and battery into the disposable module maintains sterility while eliminating separate battery replacement tasks.

Cutout parts in the second holder allow width-wise deformation for ledge passage, ensuring stable cannula fixation and accurate sensing.

A sleep training device detects wakefulness and generates stimuli to promote self-soothing.

Segmented compartments maintain osteogenic factors in close proximity to graft material, extending activity duration beyond rapid degradation limits.

A surgical device uses a cooling channel to maintain thermosensitive hydrogel fluidity during spraying.

Segmenting the device into a reusable control unit and disposable medicine module eliminates cross-infection risks while enabling gravity-independent operation.

A catheter wrap device uses an absorbent interior layer to capture leaking fluids from the insertion point.

Pressure pulse analysis differentiates leaks and blockages from pump failures, ensuring accurate therapeutic substance delivery.

A vacuum film device with a perimeter seal and air valve creates negative pressure to force topical compounds into the skin.

Resilient release buttons on the connector engage a circular hub to prevent stoma irritation and leakage during tube connection.

Segmented clam-shell fasteners secure IV tubes via mechanical engagement, eliminating skin irritation from adhesive tapes while maintaining reliable retention.

An integrated reservoir eliminates manual dipping interruptions by flowing ink directly onto the needle for continuous operation.

A hinged internal bolster pivots arms from a collapsed insertion profile to an expanded anchoring state within a stoma.

Segmented plunger supports engage a leadscrew to reduce pump volume while maintaining precise drug delivery control.

Two pumps circulate tissue fluid through a porous scaffold containing live secretory cells, resolving feedback limitations in diabetes management.

A negative pressure wound therapy control algorithm switches operation modes to maintain setpoint pressure.

Electroactive polymer diaphragm actuation replaces mechanical pistons to resolve weight and precision trade-offs in portable insulin delivery.

Automated container switching maintains continuous suction during surgery, eliminating manual canister replacement errors and procedural interruptions.

Integrating occlusion sensors into the rotating valve plate flange reduces space requirements and prevents fluid leakage in medical infusion devices.

A miniature device uses a magnetic arrangement to navigate within a patient under external field manipulation.

Conductive plates in a calibration chamber measure fluid capacitance to calculate actual flow rate, compensating for tubing diameter tolerances.

A manually actuated pump uses a regulator passage to generate audible leak alerts.

A manually operated hand pump provides suction and inflation through a single squeeze-bulb mechanism.

Grooves on an implantable device exterior guide a needle tip toward the refill port opening for accurate septum access.

A compliant protective guard cushions the distal end of an aspiration instrument, preventing tissue injury during fluid removal.

A tattoo needle unit combines first and second needles with different diameters within a pocket structure to enable diverse artistic techniques.

A closed-loop medical fluid pump uses a flow sensor to measure actual delivery and a controller to adjust regulators for precise target rates.

An external adhesive collection system prevents infections and spills by capturing urine at the source without internal catheter insertion.

Protruding and recessed fill port landmarks on the housing surface resolve post-implantation rotation issues that cause catheter strain.

A dual-pocket case securely holds a smartphone and medical device in separate compartments.