Medical Devices TRIZ Cases

Calibrated leak paths let a controller detect blockages across multiple wound dressings, improving flow monitoring and therapy reliability.

A two-part port expands under the skin to create a stable implant base, reducing tissue trauma and simplifying repeated vascular access.

Maintaining a constant pressure differential and sensing gas flow or concentration helps quantify suture leak size for surgical retesting.

A thermoformed web with raised openings spreads wound exudate laterally in NPWT dressings while lowering material and production cost.

Structured web elevations keep a vacuum wound therapy tube open under suction while preserving fluid flow and lowering material cost.

Control circuitry uses a valve, flow restrictor, and pressure sensing to detect leaks, low flow, and unsafe pressure before therapy.

A segmented O-ring sealing structure helps soft mist inhalers maintain 1-5 micron aerosol delivery, avoid repriming waste, and improve dose tracking.

A pressurized tubular stiffening structure raises catheter stiffness during insertion, then relaxes for vessel conformity to prevent blood pump kinking.

A variable-volume suction body with one-way valves and detachable parts helps nasal aspirators maintain suction and simplify cleaning.

A detachable hub inserts a CGM sensor and infusion catheter in one step, then removes the introducer needles while keeping the wearable pump compact.

Signal-quality tracking and placement guidance help infusion pumps and CGM devices maintain reliable medical data transmission.

Adhesive columns through peripheral mesh openings secure non-bondable membranes, enabling finer aerosol droplets and lower nebulizer production cost.

A pressed-fiber tampon uses a body-melting cannabinoid fat coating to absorb fluids while relieving menstrual cramps and spasms.

A hydrophobic membrane and one-way valves separate vented gas from collected liquid, enabling compact chest drainage for safe home mobility.

A dual-rigidity overhanging adhesion sheet stays planar after attachment removal, improving stable skin adhesion in compact drug delivery.

A strip-shaped tobacco tar guide reduces heat absorption at the atomizing surface, enabling quicker smoke release and steadier atomization.

A rotating collar scrubs female medical connectors and reveals a visual indicator, improving disinfection compliance and reducing CRBSI risk.

A flexible latch joint enables secure linear cartridge attachment without rotation, making non-circular e-cigarette connections easier to use.

A retractable UV-sterilized platform built into a dialysis machine keeps tubing and components aseptic in space-limited treatment setups.

Acoustic reflections in the airway are analyzed through a respiratory therapy interface to detect obstruction-related conditions before symptoms appear.

Ultra-short high-energy beam delivery enables FLASH treatment of large deep tumors while reducing healthy-tissue damage.

Surface-wicking microtextures and patterned resistance heating improve aerosol liquid distribution, reduce charring, and boost heating uniformity.

Dual orientation sensors align a nasal dispenser to the user's head for repeatable targeting of hard-to-reach nasal regions.

A new analyte sensor uses calibration data from the previous sensor to shorten startup and avoid gaps in monitoring.

Localized iontophoresis and controlled release improve ocular drug residence time and bioavailability while reducing systemic distribution loss.

Bridges ISO 80369-3 and non-ENFit enteral connectors with a dual-format coupling that maintains fluid flow while reducing misconnection risk.

Electromagnetic induction warms refrigerated medicament before injection, improving patient comfort while preserving cold-storage stability.

A pre-sterilized wound therapy pump uses pressure sensing, controller feedback, and a one-way valve to detect leaks and maintain sterile negative pressure.

Pressurized fluid deforms the drug reservoir to deliver pegfilgrastim with fewer mechanical parts, reducing size, power use, and dislodging risk.

A porous body with an embedded sheet heater simplifies atomizer assembly, improves fastening reliability, and reduces heat loss and dry burning.

A positive-pressure air-jet DPI and 3D rod array interface generate small aerosols for children while reducing exhalation risk and throat losses.

Guided needle paths and locked disposal compartments organize pen needles, prevent reuse, and reduce sticking and bending risks.

A nested inner-outer housing with a fluid seal reduces friction, buckling, and leakage during instrument delivery through vascular access devices.

Optical sensing and AI-guided fluid management track urine output without an indwelling catheter to adjust diuretic and hydration therapy.

Overmolding bonds a porous adhesive patch directly to infusion sets or patch pumps, removing a second adhesive layer and simplifying manufacture.

An angled bezel rim exposes the pod inlet to reduce airflow blockage while maintaining secure electrical contact and smart pod connectivity.

A loose-coupled inhaler housing records every dose through relative movement, improving compliance tracking without altering airflow.

Multiple antennas and control circuitry enable remote monitoring and automated wound therapy adjustments with less provider intervention.

Peristaltic positioning and metal attachment parts help stabilize low-permeable drugs and improve gastrointestinal wall absorption.

A friction-driven telescoping piston and plug pump cuts valve leakage, shrinks pump volume, and improves dose accuracy for wearable insulin delivery.

An elongate track and movable key transfer rotation to a flexible shaft while allowing axial adjustment and reducing strain in endoscopic instruments.

A snap-fit base connector and biasing member create a secure low-profile catheter connection that reduces snag hazards and patient pressure points.

Segmented smooth and ridged introducer surfaces give clear tactile and audible cues while reducing vibration during flow tube positioning.

Integrated antimicrobial reservoirs keep lock solution at minimum inhibitory concentration between catheter uses to suppress hub contamination.

Blown airflow mixes with the spray through a swirl chamber to accelerate droplets deeper into the nasal cavity with a reusable nozzle.

Intracranial and surface brain signals are fused to model sleep-stage transitions and adapt stimulation to avoid over- or under-stimulation.

Contactless pressure sensing through a membrane detects occlusions in wearable fluid delivery while keeping sensors outside the sterile fluid path.

A switchable flow blocking unit isolates body fluid backflow at the replaceable-common conduit boundary, extending common conduit use.

Micro-coring needles excise small amounts of subdermal fat through fine punctures, reducing tissue disruption, bleeding, and procedure time.

Segmented liquid feeding channels with offset inlet corners create bubble expansion space, improving wick supply and preventing dry burning.