Medical Devices TRIZ Cases

A pneumatic reservoir replaces bulky pump parts, reducing device size and power needs while supporting reliable on-body drug delivery.

This drug delivery case combines rotary translation and rotation with a locking mechanism to compactly actuate the needle and prevent reuse.

Faux collapsible cartridges test nasal irrigator triggers while lockouts protect saline delivery.

A deformable valve body uses helical grooves to lower entry force and maintain sealing through repeated instrument exchanges.

An actuated telescoping catheter uses a rotating flexible shaft and aspiration to remove thrombi through tortuous vessels.

Continuous vaginal wall fluid sampling replaces frequent serum tests, supporting lower-cost monitoring and earlier recurrence detection.

A potential-energy source ruptures a membrane to expel drug as a GI micro-jet, avoiding painful needle injection.

This plug-in diffuser combines gentle heating and fan-driven ventilation to manage CBD vapor release, concentration, and oil use.

An interfacing adapter with orifices secures porous fluid collection and vacuum drainage across varied anatomies, supporting comfort and hygiene.

Magnetometer and accelerometer sensing identifies injection endpoints in non-rotating pen systems.

Wearable sleep data guides personalized bedtimes and adaptive interventions.

A flexible catheter deploys an expandable wireform to anchor nasojejunal feeding tubes and maintain accurate GI fluid delivery.

A reusable dialysis organizer uses sealing pins and integrated sensors to secure disposable lines and automate fluid monitoring.

Whole-body cooling may be slow and cause cardiovascular strain; circulating fluid in a conforming nasal membrane cools the brain locally.

Embedded pressure, temperature, and pH sensors help one controller adapt therapy across different wound dressings.

A predefined-volume cassette calibrates pump measurements, while pressure feedback supports consistent peritoneal dialysis delivery.

Cooling therapeutic fluid creates negative reservoir pressure, reducing leakage when an implantable infusion needle is withdrawn.

A controller detects canister presence through pressure changes, adjusts therapy modes, and confirms blockage or leak alarms.

Linear-channel vibration atomization enables low-heat, low-residue aerosol generation.

Pressure, motion, and magnetic sensing classify orthopedic-device use, reveal non-compliance, and support timely ulcer-care intervention.

The rotatable base and body release fluid into the sleeve at use, wetting the catheter while preserving dry storage.

Antimicrobial compounds in silicone lubricant kill bacteria on mating surfaces, reducing infection risk without added disinfection.

A plunger clip and moisture barrier help prevent deployment errors and implant degradation.

This warming device uses conforming bladders and sensors to heat formulations uniformly, limiting overheating and contamination.

A collapsible polymeric urine container balances discreet storage with sterile collection, easy deployment, and safe single-use disposal.

An integrated spray cap accommodates the needle and atomizes drug solution, simplifying syringe conversion while shortening the fluid path.

A wicking urine collection device uses adhesive flanges and portable vacuum suction to reduce spills and hygiene issues.

A rotation detector separates motor failure from tube or cannula blockage, enabling targeted component replacement.

Track formulation depletion electronically and shut down vaping before the reservoir runs dry.

A contoured platform recess secures the catheter hub and extension port, while a dressing helps protect the insertion site.

This needleless connector uses a circumferential lip seal to obstruct fluid movement toward the valve face during valve cycling.

Alternating heat and cold adjusts skin permeability, increasing superficial drug concentration while limiting rapid systemic absorption.

Helical mating surfaces smooth inhaler loading while retaining the preload.

A layered wire-support structure anchors catheter pullwires for repeatable steering, less shaft deflection, and broader anatomical access.

A pre-loaded spray dispenser uses a protective cap, interlock, and trigger to prevent inadvertent fluid release.

Optical sensors measure platelet concentration and flow to calculate total yield and end collection at the target.

An off-center motor shakes a housing of movable components, combining vibrations and rattling sounds to calm crying infants.

An energy switch side cavity with variable probe depth controls beam energies for both therapeutic and imaging outputs.

This inhalation device uses a cover-mounted blocking member to block the mist outlet during non-use and maintain consistent mist output.

The interface overlays catheter yaw and pitch while coil currents adjust external magnetic fields for precise interactive steering.

Spectroscopy analyzes suctioned waste for debris and microorganisms, giving objective feedback on when surgical lavage is complete.

Narrowed or expanded channel sections redirect capillary force, balancing cavity pressure while preventing aerosol-forming medium leakage.

Overlapping button time traces help prevent accidental infusion activation.

Snap-locking parts simplify collector attachment and help limit excretion leakage.

A fluid verification module detects priming status, supports hygienic patient-line priming, and prevents reuse in fluid injector systems.

A disposable circuit and reusable controller automate sequential biological fluid incubation through pumps, clamps, and membrane separation.

Ultrafiltered dialysis fluid removes bacteria and endotoxins while checking membrane integrity.

A plunger-controlled cartridge stabilizes seal members in hemostasis valves, supporting high-pressure infusion with less leakage.

This case uses a shaped restriction surface to support an inexpensive storage container during waste liquid suction.

An orientation sensor and angle thresholds control a peristaltic pump, alerting users or pausing delivery when air injection is possible.