Medical Devices TRIZ Cases

An irreversible locking member keeps the enteral adapter sealed to the fluid outlet when the threaded cap is removed, preventing leakage.

A movable inserter tip opens a sealed wetting chamber on cap removal, ensuring full catheter lubrication while keeping handling surfaces dry.

Pressure sensing, haptic feedback, wound fluid flow, and thermochromic cues make wound care training more realistic for medical trainees.

Three modular subassemblies secure the cartridge, retain the power source, and integrate charging contacts to simplify assembly and improve usability.

A non-linear mouthpiece cover coupling delays dose actuation until fully open, improving dosing consistency and reducing contamination.

Electronic sensing and wireless localization turn an implantable vascular access port into a compact monitor for continuous patient data.

A removable water-cooled vapor path smooths harsh vapor after heating, improving inhalation comfort while keeping the module easy to clean.

A pre-strained dielectric elastomer tube and negative pressure chamber raise implantable pump flow and head pressure without added bulk.

A segmented cartridge with a container portion and extension element lets one inhalation platform handle different liquid volumes with reproducible nebulization.

Radially compressible pads let an infusion hub lock securely, rotate for conduit connection, and release with a simple squeeze.

Questionnaire-based frequency matching replaces invasive meridian treatment with self-administered audio tones for non-contact Qi stimulation.

A metal-sealed viewport container keeps lithium and other air-sensitive materials under vacuum or inert gas, preventing contamination during transport.

Using external heat, modular parts, and counterflow airflow, this case shows cleaner vapor extraction without batteries or electronics.

A balloon damper in the pump output port smooths pulsating flow and reduces electrical noise in disposable medical reciprocating pumps.

Spring drive, braking, and hydraulic damping smooth plunger force in IOL injection to prevent sudden lens ejection and improve control.

A retractable ejection wire clears biological debris from surgical suction tips without interrupting suction flow or compromising sterility.

A columella-guided dual nostril inserter improves nasal positioning and targeted deposition while staying easy to use across varied anatomies.

Heated rolling-wheel reformation removes catheter kinks and restores uniform diameter for safe reuse after deformation.

A hinged spray shield repeatedly disinfects needle-free connectors to limit contamination and reduce CRBSI risk between uses.

A single-valve breakaway connector uses a moveable cannula and needle-free fitting seal to maintain sterile fluid shutoff during line separation.

Deep pulsatile suction boosts initial clot aspiration, then cuts flow to limit blood loss and avoid premature thrombectomy termination.

Programmable basal and bolus GLP-1 delivery replaces fixed weekly dosing to stabilize therapy and reduce gastrointestinal side effects.

A fixed riser pipe and moveable pumping chamber reduce valve flow resistance, enabling reproducible aerosol ejection of higher viscosity liquids.

A dual-needle inserter places both cannula and glucose sensor at one site, reducing insertion steps while supporting real-time insulin adjustment.

Electrical impulses delivered near the ear are paired with audio cues to enable non-invasive cranial nerve therapy at home.

Electrical stimulation is paired with local antimicrobial delivery and secretion removal to improve swallowing while lowering aspiration pneumonia risk.

A skin-secured distal foot and movable carriage sleeve keep the delivery tool stable, prevent unwanted removal, and support precise insertion depth.

An expanding plastic bellows spring and lost-motion pump layout maintain liquid dosing accuracy while improving discharge head recyclability.

A wearable challenge-response monitor detects opioid-induced respiratory depression, delivers naloxone, and alerts caregivers when users become unresponsive.

An angled air outlet channel improves aerosol discharge from a moving banded substrate, reducing slow outlet flow and poor inhaling effect.

A reel-fed strip substrate and protective housing enable continuous aerosol generation without frequent manual replacement.

Layered transport-like vibrations, brain wave frequencies, and natural sounds help a portable transducer-based sleep aid improve relaxation without drugs.

Optical emitters and receivers track IV fluid flow and air bubbles, enabling automatic control for safer, more reliable dispensing.

An expandable renal blood flow regulator with pressure sensing helps diuretic-resistant heart failure patients improve urine output and lower venous pressure.

Air-inflated bladders move dialysis fluid and heat the bag, replacing rigid cassettes and complex pneumatic parts to cut APD cost and complexity.

EEG-to-fMRI correlation enables personalized emotion-aware lighting recipes that guide users toward target moods without costly fMRI use.

An O-ring cap and frangible seal maintain vacuum and block air ingress in medical drainage containers while simplifying assembly.

A fixed piston and movable cylinder use a plastic bellows spring and lost motion to keep pharmaceutical liquid dosing stable as spring force relaxes.

A dual-conduit filling member replaces multiple tubes to simplify patch pump assembly, cut leak paths, and maintain reliable medicament flow.

A spring-loaded slack loop releases under tugging to protect secured medical tubing, warn caregivers, and fit different tube sizes.

Wearable AR overlays guide probe positioning during ventilated ICU ultrasound, improving repeatability while reducing fatigue and consultation delays.

A removable flush insert and tissue ingrowth barrier enable frequent port access without skin piercing while lowering infection risk.

A flexible negative-pressure dressing uses articulated arms and thin films to keep joint incisions sealed while reducing edema and supporting healing.

A dual-lumen cannula with an aligned clamp isolates aortic flow paths for CPB while reducing manipulation, stress, stroke, and emboli.

A constant-force piston inside a single-piece wound pump delivers stable negative pressure without electronics, cutting cost and disposal burden.

A resistive heater passes through an integrated HNB capsule chamber to generate aerosol from plant material while limiting pyrolysis and combustion byproducts.

Freezing part of a sprayed liquid composition into solid particles helps it pass the skin lipid barrier, reach below the epidermis, and limit damage.

A central injection assembly surrounded by reservoir, pump, and circuit parts keeps the insertion tube stable during movement and impact.

Integrated piezoelectric sensors track dressing force, hydration, and limb motion to adjust negative pressure therapy and improve wound management.

A tapered capsule cavity, hinged lid, and alignment contacts improve insertion and sealing while keeping HNB aerosol generation below pyrolysis.