Intravenous Devices TRIZ Cases

A packaging nest uses tubular members with angled counterbores to support containers across different fill and finish machines.

Segmented frame structure with vertical reinforcing ribs reduces residual stress warpage in injection molded medical container nests.

Barbed bearings on female luers engage syringe tips to prevent disconnection and fluid leakage in needleless access valves.

A multi-lumen intravenous catheter integrates a distal mixing element to combine multiple fluid streams, eliminating tangles and delays from distant stopcocks.

A backflow barrier with a restoring force blocks secretions in suction collection devices, preventing discharge when suction stops.

Helical rifling guides fluid flow through surgical cannulas, preventing tissue adhesion and blockages.

A self-adjusting venous graft uses a collapsible conduit to regulate blood flow based on pressure changes.

A handheld pump unit creates negative pressure to draw fluid from a collection chamber through a conduit into a storage container.

Mechanical collapse of a flexible overlay creates a hermetic seal without adhesive, eliminating patient discomfort and separate collection devices.

A stabilizer and guide portion secure the needle tip within the upper skin layer to ensure consistent drug administration.

A vacuum break device vents endoscopic smoke through a chamber with atmospheric openings.

An integrated switch assembly with a thermocouple-embedded movable plate measures item temperature to prevent energy loss from heating empty containers.

A suction regulator uses an air curtain and mechanical shroud to isolate critical control components from the inlet.

A holding plate positions a stopper over a vessel opening using a slot to allow gas flow, reducing lyophilization time by eliminating specialized components.

A suction regulator provides four operational modes including continuous full vacuum for clearing patient circuit clogs.