Medical Devices TRIZ Cases

A hyaluronic acid coating on PTFE and other fluoropolymer surfaces resists protein adsorption, reducing inflammation, clogging, and infection risk.

Sequential shape-memory valve actuation creates suction and pumping pressure for accurate delivery in a smaller, lighter patch pump.

Tapered valve-seat surfaces and spaced displacement ribs improve cassette sealing while supporting quieter automated peritoneal dialysis.

An immiscible oxygen transport liquid and controlled blood droplets replace membrane contact to cut clotting, hemolysis, and anticoagulation needs.

A hollow bulb and scored channel keep liquid separate from the swab until use, enabling metered dosing without excess liquid or lengthy stability testing.

A modular peristaltic pump layout dispenses large-volume or viscous fluids while reducing contamination risk, bulk, and disposable electronics.

A PFAS-free polyether block polyamide cannula uses self-lubricating additives to enable tip forming, smooth insertion, and reliable insulin delivery.

A detachable mouthpiece and canister improve inhaler hygiene and refilling, while a needle valve supports efficient aerosol formation.

A membrane-coated voltammetric sensor extracts hydrophobic drugs from fluid samples for fast, interference-resistant infusion feedback control.

A cam-driven aerosol dispenser base converts rotation into axial tube movement, piercing the closure without high-force manual pushing.

Fluid-container checks compare measured properties with stored setpoints before treatment, helping prevent incorrect connections and protect patient safety.

A controller switches therapy modes with or without a canister and uses pressure-source activity to flag leaks or blockages.

A movable connector lets the outer shell travel farther than the shield remover, reducing friction and force during cap removal.

A pawl and limiting protrusion prevent reverse gear rotation, improving dose-count accuracy and showing medication remaining in the canister.

Variable-frequency ultrasonic atomization replaces coil heating to address leakage, overheating, and health risks while controlling vapor density.

An external fluid-permeable core and suction tube collect urine supralabially or intralabially without invasive catheterization.

An extension rod impacts the piston cavity base to contract the seal, bypass trapped air, and position injector pistons without vacuum.

Two rotatable carrier disks and a central piercing nozzle release and mix separate powders while reducing inhaler part count and manufacturing complexity.

PDE5 inhibitors delivered through intravaginal rings or pessaries target pelvic floor tissues, offering localized therapy without surgical risks.

Reverse-tapered markers can hinder distal-end alignment; hollow tapered radiopaque markers reduce diameter mismatch under angiography.

An AI-driven sensor array analyzes gaseous drainage indicators for rapid, non-invasive pathogen detection without complex laboratory processing.

A compact RF source, circulator, and flexible waveguide reduce apparatus size while maintaining power transmission during gantry rotation.

A cantilever blade engages the inhaler chassis to coordinate blister rupture and dose indexing, preventing incomplete dosing and counter errors.

Upstream pressure sampling compares slope profiles to detect unintended flow and defective infusion-line valves before pump operation is altered.

Integrated indicators in a low-profile fluid conductor monitor pressure during negative-pressure wound treatment while carrying therapy fluids.

Pulsed 700–1100 nm light addresses limited penetration by reaching deeper brain regions while supporting mitochondrial function and reducing Aβ deposition.

Known-volume pump chambers calibrate cassette-based dialysis pumping to improve fluid measurement accuracy and treatment consistency.

During peritoneal dialysis, reduced pump speed checks suspected patient-line occlusions without reversing flow or reintroducing waste.

Pressure sensors and a controller track weight distribution and activity, giving patients real-time feedback to improve offloading compliance.

An integrated balloon damper smooths single-piston pump pulsations, stabilizing disposable fluid delivery while limiting electrical noise interference.

Membrane-driven force sensing detects occlusions while optical refraction sensing identifies air bubbles and alerts infusion pump users.

Separate insulin delivery and glucose monitoring require multiple needle insertions; an integrated housing enables both elements to be inserted together.

Bridge wicking layers transport fluid through a sealed passageway, while absorbent storage supports reduced-pressure treatment under compression.

Resilient upstream and downstream seals, spring contacts, and a funnel-throat gasket limit bubbles for consistent aerosol generation.

Replacing flexible membranes and pneumatic pumping, rotary valves and integrated pumps direct cassette flow with lower system complexity.

Elastic blisters and raised channels deform with pressure changes to reveal blockages and support consistent negative-pressure wound therapy.

Variable collection practices can contaminate cultures; complementary fastening guides catheter-port mating and strengthens the fluid seal for aseptic sampling.

Human mouth suction drives a vacuum channel and nozzle to atomize fluid without heating, preserving components and limiting large droplets.

Independent canisters and valves let one negative-pressure source collect exudate while a full canister is changed without interrupting therapy.

An RFID or barcode element records cap application and duration, improving IV-port disinfection compliance and reducing CRBSI incidence.