Surgery TRIZ Cases

Two-stage anodising forms pits in a metal surface layer to store silver ions, preventing coating detachment from body fluids.

High-frequency vibration of the fiber optic bundle randomizes interference patterns, removing speckle graininess from coherent illumination.

Oblique camera orientation and inclined illumination windows reduce shadow casting from working channel instruments, ensuring clear visualization.

Laser-cut nitinol memory metal strips expand to capture hard clots, eliminating proximal vessel occlusion risks.

Nested tubes and an actuatable malecot expose a coagulant agent to seal arterial openings, reducing manual pressure requirements.

Reciprocating flow manifolds direct liquid onto multiple oral surfaces to resolve inter-proximal cleaning gaps without requiring multiple devices.

Controls focus lens movement during special light emission while holding it stationary during normal light to resolve AF evaluation accuracy issues.

A heat conductive member transfers thermal energy from ultrasonic transducers to a ground bar for efficient dissipation.

An elastic tubular grip resolves instrument slippage and hand fatigue by offering a warm, secure hold without lubricants.

Polymers and crosslinkers in the membrane reduce temperature sensitivity, maintaining signal stability for accurate continuous glucose monitoring.

Integrated vacuum pump creates a sterile barrier for video endoscopes, eliminating separate camera head cleaning and reducing hygiene complexity.

Asymmetric three-flute configuration offsets cutting edge engagement timing to eliminate tool chatter and improve precision during aggressive bone cutting.

A central ramp pushes endplates outwardly to maintain normal disc spacing without pre-distracting vertebral bodies.

An eccentric tissue clearing structure rotates radially outward to disengage adhered skin grafts, resolving separation damage risks.

A sample collection device uses a plunger and conduit to isolate oral fluid within a sealed chamber for direct self-administration.

An inflatable sealed chamber raises flexible walls to create distance between the adhesive wafer and coupling flange.

A collapsible protective sleeve repositions along a body cavity access tube to create an adjustable sterile barrier.

Nesting radiopaque markers inside the drive cable preserves the outer diameter, enabling access to smaller vessels without increasing device complexity.

Elastic spring element counteracts motorized drive force to prevent tissue injury and cutting edge damage from excessive forward displacement.

A fluid guiding part directs cleaning liquid to an observation window and adjacent regions, preventing halation from residual liquid.

A tapered tubular cover member secures to a cylindrical sheath on a treatment instrument shaft.

A stereoscopic endoscope estimates tissue depth using camera sweep parameters to visualize concealed anatomical structures.

A combined tube set merges irrigation and rinsing functions into one unit, reducing equipment handling complexity and contamination risk.

A transoral retractor uses a segmented spatula blade to distribute pressure across the tongue during robotic head and neck surgery.

A composite eyelid plaque uses local quality shielding to protect adjacent organs from collateral damage during cancer treatment.

Merging sensory and device status into unified data blocks enables real-time monitoring of in-vivo sensing devices.

Variable negative pressure at a suction port compresses tissue against an ultrasound probe, enabling elastographic imaging without mechanical actuators.

Spiral laser irradiation fixes endoscope pipe to coil while maintaining diameter accuracy and preventing weld bead overlap.

Lateral attachment of the outer part enables autoclave resistance without compromising viewing flexibility.

A magnetic driving force transmitting unit conveys rotation to endoscope rotary units through a channel system.

Magnetic compression induces tissue necrosis to form a functional opening, reducing surgical trauma and recovery time compared to invasive resection.

A urine collection device uses a passive diverter to direct initial flow into a sample receptacle while routing remaining fluid to an overflow outlet.

A distal end cover features a convex curved surface that allows elastic wires to slide smoothly within the sheath passage.

Segmented torsional resistance in the universal cord reduces surgeon hand load while maintaining drive shaft reliability.

Zinc base alloys balance degradation rates and mechanical strength by adding iron and functional elements, preventing premature failure in vascular stents.

A cylindrical movable member slides along a central axis within an optical unit using electromagnetic force from a voice coil motor.

An anterior hip prosthesis secures via cortical bone interlocking, avoiding capsule penetration and infection risks.

A specimen retrieval bag cinch mechanism adjusts the opening diameter using a flexible band and engagement component.

Curved cannonball geometry widens the viewing angle beyond 150 degrees while shielding observation windows from impact damage.

Saliva spectroscopic analysis replaces invasive lumbar punctures, enabling non-invasive detection of cognitive diseases through spectral signature correlation.

Segmented collection kits preserve mediastinal location data during lung cancer surgery, resolving communication gaps between surgeons and pathologists.

Phase segregated block copolymers combine polydimethylsiloxane and alpha-hydroxy acid blocks to enable temperature-triggered shape recovery.

A specimen retrieval bag uses a conduit to evacuate air from its interior for compact deployment.

A segmented endoscope bending portion uses a regulation wire to oppose operation wire forces, enabling precise S-shape configurations.

Weldable sleeves fix rod lenses inside metallic optics tubes via longitudinal welding seams, preventing lens displacement under mechanical stress.

Segmented holder device with angled apertures maintains indicator capsules in fixed orientations, resolving cleaning access and visualization bottlenecks.

Snap-fastening means immobilize a traction element at spaced latching positions, resolving the trade-off between fixation speed and tensile force precision.

Segmented convex and concave cylindrical regions transfer surgical forces efficiently while reducing operator fatigue during prolonged procedures.

Overlapping subsections in a segmented thrombectomy net prevent embolus escape while allowing independent vessel wall attachment.