Eye Surgery TRIZ Cases

Hinged half-shell cartridge positions intraocular lens haptics to prevent damage during small incision injection.

An eccentric phacoemulsification needle creates hybrid motion through an off-axis aspiration passageway.

A processor drives a piezoelectric actuator at its mechanical resonant frequency by monitoring electrical power input.

A surgical tool attachment uses a tab to constrain movable components and secure specific orientations during procedures.

A finite element model maps corneal topographies under pressure to evaluate biomechanical parameters.

A multiple curved cannula navigates eye anatomy to position medical devices precisely.

A lacrimal duct tube uses an arc-shaped wall portion to enable slidable insertion along a bar-like operative instrument.

Curved distal end of elastic metal rod automatically emerges from intubation cannula into nasal cavity, eliminating blind retrieval and tissue damage.

Gradually closing atraumatic forceps jaws ensure initial distal contact, reducing trauma when separating convex retinal tissues.

A flexible impeller pump in a phacoemulsification handpiece conveys aspiration fluid and emulsified tissue from the surgical site.

Pressurized heated fluid jets fracture occlusions in meibomian glands, restoring natural secretion flow without invasive manual expression.

Oblique slit geometry utilizes intraocular pressure to appose elastomeric edges, preventing fluid leakage during ophthalmic surgery.

Dynamic frequency control prevents heat buildup during continuous operation by alternating between high-frequency cutting and low-frequency cavitation modes.

A surgical system detects aspiration vacuum rate of change to dynamically adjust ultrasound power delivery during phacoemulsification procedures.

Self-guiding deployment of a tissue-compliant shunt through a pre-bent shaft prevents cyclodialysis clefts and hypotony.

Infrared sensors monitor fluid temperature at pump inlet and outlet ports, triggering controller shutdowns when excessive heat differences indicate overheating.

An ophthalmic illuminator employs a PDLC diffuser to adjust light diffusion, eliminating glare from vitreous fluid index switching.

Pneumatic pressurization maintains constant irrigation pressure in ophthalmic surgery, eliminating gravity-feed height limits and reducing device complexity.

An asymmetric fragmentation tip rotates back and forth to suppress cavitation damage to ocular tissues while maintaining efficient nucleus fragmentation.

A digital micromirror device iteratively refines ophthalmic lens contours using a convergence process to achieve precise design conformity.

Silicone oil injection creates a reversible ocular hypertension model that accelerates retinal ganglion cell degeneration for neuroprotectant testing.

Adjustable footpedal thresholds resolve the contradiction between operational simplicity and surgical efficiency by enabling dynamic mode switching.

A surgical implement applies a stiffening coating or tapered lumen to increase wall thickness, resolving pliability issues in minimally invasive eye surgery.

Flux shunt concentrates electromagnetic energy toward the implant, enabling active intraocular pressure monitoring.

Replacing vacuum-based systems, the pump eliminates post-occlusion surge and pulsating flow rates that cause severe eye trauma during surgery.

Removing insulating coatings from ophthalmic probes reduces thickness and tissue damage while preserving electrical connection reliability.

An infusion pipe insertion part uses an arc-shaped cross-section to facilitate cannula joining.

Stabilization elements counteract upward lens movement during snare contraction, preventing trauma to adjacent eye structures.

Segmented sensors calculate differential pressure to compensate for environmental variations, ensuring accurate intraocular pressure readings.

A vacuum surge suppressor employs a pressure-responsive bypass valve to prevent tissue damage from excessive vacuum surges during occlusion events.

A thumbwheel actuated blade creates precise circular incisions in the anterior lens capsule.

Compressing decellularized pig eye sclera and forming amide bonds yields a transparent, biomechanically strong corneal repair material.

A curved scrubbing instrument with a disposable head removes corneal epithelium via uniform pressure, eliminating trauma from uneven contact.

A non-invasive eye treatment system uses LED light sources and optical fiber guides to detect fluorescence from lens proteins.

Controlled thermal energy melts solid obstructions in meibomian glands, enabling mechanical expression while preventing tissue damage from excessive heat.

Self-retaining curved segments compress tear drainage paths without interfering with eyeglasses, resolving manual occlusion discomfort.

Dynamic wavelength switching between visible and near-infrared spectra resolves visibility contradictions in glaucoma surgery by revealing hidden aqueous veins.

Segmented components create a fluid-tight seal to distribute agents uniformly in the macula while preventing retinal detachment.

Radially extendable anchors secure the device while the one-way valve prevents nasal reflux of air and secretions.

A phacoemulsification tip uses a variable diameter lumen to aspirate cataract fragments efficiently.

A vitrectomy probe integrates soft gripping components and optimized pneumatic channels to attenuate mechanical vibrations during surgical procedures.