Medical Devices TRIZ Cases

Transverse blades inside a hollow cylindrical luer fitting resize fat particles via mechanical shearing, preserving stromal vascular fraction integrity.

A fluid impermeable housing with a porous material collects urine via capillary action.

Segmented design eliminates decontamination costs by using disposable single-use portions for cross-contamination prevention.

A single color image sensor captures distinct light spectrums from multiple infusion tube portions to generate separate images.

A foldable male urinary catheter package uses a flexible housing to store the device and integrated lubricant for immediate use.

Dual blood pumps maintain continuous dialyser flow while a compliance chamber buffers venous phase pressure peaks, preventing membrane blockage.

A fluid dispenser uses a breakable element to indicate first use.

Segmented reservoir with overflow chamber accommodates solvent thermal expansion, preventing contamination and pressure buildup during temperature shifts.

Automated peristaltic pump system extracts patient blood using controlled tube compression and integrated sensors for precise volume measurement.

Hinged piezoelectric misting panels adjust to skin contours, resolving portability and targeting contradictions via dynamic segmentation.

Angled extensions target the olfactory zone, resolving ineffective deposition from variable orientation.

Self-expanding metallic mesh diverts fecal stream away from anastomosis, eliminating surgical reversal complications.

A mechanical infusion pump uses helical springs to propel fluid through a controlled drive system.

Implantable drug delivery device uses selectable flow restrictors to control liquid administration rates for sensorineural hearing loss treatment.

Hysteresis heating in a magnetic susceptor reduces residual heat and power consumption while maintaining evaporation quality.

A replaceable universal atomizing head uses a liquid guiding member to channel e-liquid to the heating device.

Rear rim members offset isocentre distortion from mechanical sagging, reducing the volume below 0.5 millimeters.

Nested scaffolds and a hook tool bias tissue engagement for full-thickness resection, eliminating incisions that cause patient pain.

Nested coupler ridges align valves and compress tubes radially, preventing leaks and patient trauma caused by misaligned helix designs.

Integrating a negative pressure source and electronics within a wound dressing eliminates external tubing while maintaining a dry environment for components.

A liquid collection system uses a water-soluble closing component to open a duct between main and auxiliary chambers.

Piezoelectric elements drive a pushrod to advance a syringe, eliminating gear reduction systems and reducing pump size.

Hydrophobic filter and check valve extract air upstream of the pump to maintain continuous drug delivery.

Frequency analysis of pressure signals distinguishes needle detachment from patient movement, reducing false alarms in dialysis circuits.

Electronic tattoos link wrist devices to elbow armbands, expanding the interaction area beyond small screens while maintaining hands-free operation.

Segmenting suction volume into partial strokes resolves delivery accuracy issues in small-volume dialysis applications.

Elastomeric port valves deform under transverse force to create proximal gaps, resolving unreliable sealing and infusate leakage in vascular access devices.

Zero-crossing switching reduces electromagnetic interference and power loss while maintaining maximum heating power across different nominal voltages.

A bending instrument with a grounding member and actuator shapes malleable guide members.

Segmented screen openings prevent debris occlusion in uterine ablation fluid systems.

A fluid drainage container uses a piston and spring to expand volume.

A medical diagnosis system merges functional imaging with anatomical data to visualize brain substance distribution.

An occluding mechanism secures a drug depot in a cartridge, enabling precise subcutaneous implantation without bulking agents.

Weight and airflow sensors measure effluent to calculate air volume, replacing subjective observation with automated precision.

Segmented atomization modules isolate the piezoelectric element with a waterproof member, preventing water vapor ingress and short-circuiting during washing.

An automated super bolus generation system delivers augmented meal insulin doses to regulate patient glycemic responses.

A polyvalent energy harvesting system uses a magnetic flux divider to concentrate field lines at discrete positions for efficient power generation.

Backpressure regulators isolate syringe compliance from downstream sensors, enabling faster and more accurate occlusion detection.

Magnetic sensors detect relative rotation between device members to measure dose amounts, eliminating mechanical inaccuracies and wear.

Curved bushings guide blood draw tubes through angled catheter ports, preventing kinking during insertion.

Opposing arched notches on the Archflo midline catheter reduce mural thrombus formation and prevent vessel wall suctioning.

Dual epicyclic gear arrangement drives separate trocars for sensor and cannula insertion.

Silver impregnated polymer mouthpiece prevents bacterial growth, addressing hygiene risks from microorganism accumulation in reusable inhalers.

External passive heat sink with cooling fins thermally connects to internal components for reliable temperature control.

An electronic cigarette uses a porous wicking material with greater contact area to improve liquid absorption and atomization effects.

Segmented bamboo carriers control diffusion speed to prevent rapid vapor release and storage contamination.

A pulsatile valve increases suction at a surgical drape to enhance fluid collection.

A catheter stabilization device uses a deformably rigid retention strip to secure medical tubing.

A pliable adapter cap shields a rigid connector from patient skin contact.