Medical Devices TRIZ Cases

An emotion-inducing device infers current emotions via biometric sensors and emits specific odor components to align emotional states.

Segmented micro-fluidic chambers translate distal pressure into optical signals, restoring control accuracy during long catheter navigation.

A reader synchronizes with an implant resonance frequency using a phase-locked loop to maintain efficient power transfer.

A puncture assisting device stabilizes skin and guides the needle using a rod insertion portion to widen pinching portions.

Dynamic modeling of contrast agent concentration improves tissue differentiation accuracy while reducing processing time.

An implantable infusion needle penetrates housing walls to deliver erection drugs, eliminating manual injection errors and improving administration accuracy.

Dual sensor catheters measure fluid flow characteristics to determine cardiac output, reducing the invasiveness of traditional Swan-Ganz procedures.

Monitoring piezo pump frequency deviations alerts operators to liquid blockages, preventing NPWT system failures.

Ear-worn speakers deliver calming audio while a microphone captures medical staff voice signals for clear transmission.

Offset pivot pinions combine translation and rotation to adapt locking mechanisms across varying piston head thicknesses.

Magnetic failure-release mechanisms disconnect percutaneous catheters upon exceeding force thresholds, preventing tissue damage and accidental dislodgement.

A programmable memory card transfers drug delivery instructions and patient information between a pharmacy server and an infusion pump.

Feedback control mechanisms maintain reliable pressure regulation across varying wound sizes and exudate volumes.

A syringe barrel holds fluid and connects to a welded atomizer tip for controlled dispensing.

Calibration jig measures 3D sensor positions and applies controlled forces to prevent sudden untwisting during cardiac ablation procedures.

Non-polymeric polyols in a wetting fluid shield hydrophilic coatings from radiation degradation, preserving adhesion and low friction.

An offset piercing element creates a uniform capsule aperture to prevent reclosing and ensure consistent dry powder delivery.

A mesh nebulizer support frame maintains the sheet at an inclination angle using inward protrusions contacting the vibration surface.

An elastic carrier inside the needle cover disengages from the housing during movement, lowering user effort for complete needle insertion.

Non-planar pushrod surfaces reduce friction and wear, resolving binding issues that cause lock-out errors in small-volume opioid dispensers.

Segmented connector with air vent holes prevents negative pressure blockage while a plug seals against leakage.

A retractable needle assembly uses a deflector lever to move the patient end into the body portion for safe housing.

A catheter port housing accepts detachable adapter pieces to alter the device outer shape and accommodate varying patient body volumes.

Unfolding anchoring assemblies secure catheters in subcutaneous tissue, eliminating adhesive residues and reducing infection risks at insertion sites.

Molded hub design with depth-limiting shoulders controls needle length tolerance while integrated shields prevent accidental exposure.

Replacing step motors with a magnetoresistive sensor and permanent magnets reduces manufacturing cost while maintaining infusion speed precision.

A neurovascular catheter uses a rotating helical agitator tip to mechanically disrupt and aspirate embolic material from intravascular sites.

An electromechanical converter powers a bistable nematic liquid crystal dose indicator, eliminating battery dependency in compact fluid dispensers.

A manually powered therapeutic fluid dispenser uses a mechanical pump to deliver bolus doses of insulin without electronic components.

Electrochemical sensor detects insulin leakage at the infusion site, triggering a valve to stop flow and prevent under-infusion.

Segmented partition walls in the side pipe port prevent bacterial contamination while enabling complete fluid evacuation to resolve retention issues.

Electronic sensors replace subjective assessment of colon distention, reducing image artifacts from patient motion during virtual colonoscopy procedures.

An asymmetric pump cassette frame ensures correct valve orientation upon insertion, preventing inadvertent fluid flow states in disposable infusion systems.

A simulator divides tissue into compartments along blood flow to predict pixel value changes over time.

An ingestible device delivers up to 400 microliters of therapeutic agents directly into the GI lumen wall via a hydraulic piston mechanism.

A protective cap system vents air through a hydrophobic filter while retaining liquid in a reservoir during self-sealing valve priming.

Optical components offset laterally from the dispensing axis detect backscattered light to track medication adherence without interfering with drop application.

Segmenting the apparatus into disposable vials and a reusable receptacle eliminates contamination risks while reducing patient costs.

Segmented catheter systems deliver miniballs into tubular structures, eliminating extensive incisions and reducing embolism risks.

Fiber-optic communication interface transmits signals electrically non-conductively within medical device housings.

Septum units with transverse slits and flaps automatically occlude the cannula upon disconnection, eliminating blood reflux risks without external clamps.

A detection device restricts fluid flow through tubing lines when external force is applied to the line.

A peritoneal dialysis system integrates a glucose sensor and insulin pump to monitor blood sugar levels in real time.

An accordion-like dispensing device crushes antibiotics into fine powder while maintaining sterility to prevent cross-contamination during wound treatment.

Aggregation agents accelerate red blood cell sedimentation to automate plasma extraction, eliminating manual centrifugation and reducing biohazard exposure.

A urinary catheter featuring a reinforced retention mechanism and stabilizer for secure patient positioning.

Segmented flexible and rigid sealing elements prevent air ingress during refilling, resolving reliability versus complexity trade-offs.

A dual-balloon catheter applies uniform pressure to the nasal cavity for effective nosebleed control.

A solid-state thermoelectric cooling device maintains whole blood at safe temperatures within a portable dewar vessel.

A fluid bridge with a porous foam manifold maintains enclosed pathways and structural integrity under compression.