Medical Devices TRIZ Cases

A cylindrical needle with a tapered blade and inner passage groove supports sufficient liquid-medicine delivery in tissue under 1 mm.

This case uses a bobbin-wound power spring to tension and peel blister lids, supporting reliable, contamination-free dose delivery.

A single-piece body uses foldable supports and perforating elements to protect sealed doses while enabling simpler bidose dispensing.

A conductive cutting tip and insulated proximal region help limit duodenal wall burns during sphincterotomy.

A spring-pretensioned clamp slides onto infusion lines for reliable pinching, easy placement, and controlled fluid delivery.

A skeletal catheter frame uses circumferential cutout zones to balance distal flexibility with proximal backup support.

A rigid manifold and peristaltic pump reduce sealing issues, noise, and manual dialysis effort.

This case shows how an elastically deformable handle meters fluid in portions, simplifying dermabrasion tool production and use.

A preassembled bellows pump and valve set streamlines APD setup while maintaining precise pressure and volumetric fluid control.

This case replaces wick-fed supply with spaced direct delivery to a sheet heater for precise, uniform aerosol generation.

An integrated assembly uses esophageal electrodes and a gastric passageway to pace the heart while reducing aspiration risk.

The case uses closure elements and a size-limited opening to test and transfer the heart pump while reducing contamination risk.

A flow sleeve and EMG sensing reduce discomfort while separating detrusor pressure.

This inhaler holder uses a guide, follower, and retaining section to lock the sleeve after piercing for consistent powder delivery.

An accelerometer identifies pump configuration so power, display, charging, and communications can limit housing temperature.

Tactile and audible hub-rib feedback limits over-tightening, while shields and caps support safer pen needle disposal.

Localized cooling or vibration supports BCI training, helping subjects produce brain signals for managing and relieving pain.

This vaporiser case uses a lid protrusion to pin a herbal sachet against the heating surface for uniform vaporisation.

Low-power sensing flags pressure and therapy deviations to protect wound treatment.

This dermabrasion case uses an elastic handpiece as a fluid reservoir, replacing complex dosing hardware with manual pressure control.

A stacked isolation and thermal conduction layer helps reduce viscosity, clear ventilation bubbles, and improve liquid guiding.

A shaped adapter front face lets the union sleeve latch securely, avoiding complex custom latching parts and simplifying manufacture.

A resilient seal preserves suction while tools clear blockages or deliver medication.

Elastic pyramidal nodes focus skin pressure to enhance mechanoreception, perfusion, and limb awareness for neuropathy symptom relief.

The integrated reservoir supports smooth skin rolling, acoustic coupling, cooling, and controlled active ingredient delivery.

Pre-filled chambers and internal piercing devices improve dry powder ejection for precise dosing with less complexity and contamination.

A distal tubular marker within 0.5 mm of the catheter end helps align antegrade and retrograde catheters under angiography.

Counter-phased eye stimuli address weak direct target-frequency stimulation.

A porous biocompatible sheet and sewn filament resist movement, support early fixation, and suppress bacterial intrusion.

A pivoting connector lets the outer shell travel farther than the shield remover, easing cap removal despite high shield friction.

A movable nasal dropper and elastic locking connector adjust and secure the drip position for different nasal anatomies.

A dedicated fluid with a different concentration parameter enables accurate residual-volume calculation during peritoneal dialysis.

This case shows how a reusable drive unit and disposable pump cassette support accurate IV flow while improving patient mobility.

A pressure sensor, PID control, and PWM valve operation regulate negative and positive pressure for comfort and healing.

A controller analyzes pressure magnitude and temporal patterns to verify wound coupling in negative pressure therapy.

Phase feedback adjusts the piezoelectric drive frequency as resonance drifts, sustaining viscous-fluid atomization without heating.

This APD approach uses pneumatic chamber pressure and disposable containers to reduce setup time, waste, and storage demands.

Redundant devices monitor one another through scheduled self-tests and alarms, reducing unnoticed failures in analyte monitoring systems.

A wireless core standardizes NPWT and instillation control across wound dressings.

A curved sheath and resilient extension tube enter via the superficial temporal artery, reducing thromboembolic risk during carotid access.

This case shows how a shaped nose rest controls nozzle position and orientation to improve distribution and prevent medicament trapping.

A shaped cannula end is clamped into the housing to simplify assembly, prevent rupture, and improve leak-proof reliability.

This APD case replaces pneumatic sealing with peristaltic pumping to purge used dialysis fluid to a house drain.

An identification member on the feeding set lets the pump adapt delivery parameters to nutritional liquid characteristics.

Explore an IV flow regulator that uses separate levers and a switching restraint unit to secure precise, authorized flow adjustment.

Mechanical cassette valves reduce sealing delays and acoustic noise in automated dialysis.

An air-permeable barrier passively sequesters the first blood aliquot, reducing culture contamination without extra collection steps.

Capillary channels feed the heater while the carrier module limits liquid leakage.

A polymer-family handpiece uses a cam and ring to simplify reciprocation, reduce weight and cost, and avoid sterilization.

A self-expanding braided occluder uses a continuous closed proximal surface to simplify implantation and reduce embolic risk.