Eye Surgery TRIZ Cases

See how a hand-held sonic vibration cleaning head breaks up debris and disrupts bacterial cell

See how a piezoelectric applicator oscillates at 20-200 Hz to remove periorbital makeup without

A rack-and-pinion basket guide synchronizes both drawer sides to prevent wobble, ensure full closure, and maintain refrigerator temperature and humidity.

Using aqueous humor glucose as power, this implantable eye sensor enables continuous intraocular pressure and glucose monitoring without battery replacement.

Headroom-monitored linear amplifier control lets one console match different ultrasonic handpieces while limiting energy loss and ramp-up lag.

Voltage monitoring and capacitor backup keep surgical instrument power continuous during short AC mains interruptions.

A linear amplifier and transformer widen ultrasonic drive frequency and voltage ranges, reducing energy loss and supporting multiple handpieces.

A transformer-coupled linear amplifier lets one console match different ultrasonic handpieces across wide voltage and frequency ranges with lower energy loss.

Custom nonlinear foot pedal mapping gives phaco ultrasonic power finer ramp control, reducing overheating, turbulence, and poor precision.

A nonlinear footpedal-driven control mode adjusts phaco ultrasonic power to cut overheating, turbulence, and lag while improving emulsification precision.

A cascade PID loop limits supply air pressure to keep a Venturi vacuum generator out of its non-monotonic region and maintain stable suction.

A reusable motor base and disposable pump cartridge use a spring-assisted clutch to maintain reliable rotor coupling while avoiding full pump replacement.

A ring-and-gripper clutch lets a disposable pump cartridge lock onto a reusable motor shaft, cutting sterilization burden without losing coupling reliability.

Remote magnetic actuation adjusts nonlinear shunt flow elements after implantation, helping control aqueous drainage without repeat surgery.

Varying ring wall thickness and height preserves cross-sectional area, preventing hot and cold spots during capsulotomy cutting.

By merging two console ports into one sealed connector, this case preserves wider gas channels and simplifies surgical tool coupling.

A sleeve, wheels, and drive shafts enable precise robotic instrument motion while preventing accidental sliding in eye surgery.

Real-time inlet and vacuum pressure feedback with throttle and bleed valves keeps surgical venturi suction stable near maximum vacuum.

Warm crushing refines the tapered tip grain size to 1 µm or less, cutting burrs during trimming while preserving corrosion resistance.

A cascade PID loop keeps venturi vacuum generators out of the non-monotonic pressure region, improving stability and response.

A micro-pick creates a membrane flap before peeling, helping remove ILM or ERM while reducing retinal trauma and hole risk.

A reusable motor base locks to a disposable progressive cavity pump cartridge through a gripping clutch, cutting sterilization time and replacement cost.

A merged dual-port connector frees space for larger air channels, improving gas flow and simplifying coupling on surgical consoles.

A reusable motor base couples to a disposable pump cartridge through a gripping clutch, cutting sterilization burden and full pump replacement cost.

Individually actuated shunt elements let clinicians adjust aqueous drainage after implantation to control intraocular pressure without repeat surgery.

An energy beam cuts and welds a steel plate to the probe tip, creating flat inner and outer surfaces with less burr formation.

Magnetic actuation moves a gating element inside an implanted glaucoma shunt, enabling non-invasive aqueous flow adjustment without repeat surgery.

A movable gating element and actuation assembly adjust aqueous outflow resistance after implantation, helping control intraocular pressure without repeat surgery.

A rotating air-bearing valve switches probe ports continuously to cut vibration, noise, friction, and wear at higher vitreous probe speeds.

A rack-and-pinion injector enables one-handed, low-force intraocular lens ejection with precise piston control and ratchet stability.

Adjustable apertures in a multi-lumen eye drainage tube fine-tune flow resistance to control IOP and reduce hypotony risk after glaucoma surgery.

A fluid manifold guides viscoelastic lubricant onto IOL-contacting surfaces, cutting injector preparation time while preserving application precision.

A synchronous sample clock tracks voltage-current phase shift in a phaco handpiece, enabling precise ultrasonic power control without complex calibration.

A distal slider and modular shaft assembly improve manual handling stability, reconfiguration, and module recognition in ophthalmic surgery.

A retractable cannula and plunger pump deliver fluid into Schlemm's canal to reopen drainage pathways and lower intraocular pressure.

A gel-forming ophthalmic agent adheres to intraocular membranes, enabling easier peeling with less retinal contact and damage.

A magnetic valve self-regulates aqueous humor flow in an implant to prevent over-drainage and high IOP without added device complexity.

Timed overlap of work-valve signals raises vitrectomy cycle rate while reducing pressure demand, vibration, and acoustic noise.

Adjustable valves and shunts regulate aqueous humor outflow, stabilize IOP, and help patients detect pressure changes before hypotony develops.

A folded glaucoma drainage implant is inserted through a small incision, then unfurled as the tool expands the subconjunctival pocket.

An integrated cam-driven aspiration pump reduces pulsatile suction and surge volume for steadier fluid control in ophthalmic cutting procedures.

A GUI-based protocol manager checks phacoemulsification settings for incompatibilities, reducing manual setup errors and prep time.

A linear voice coil motor drives rapid reciprocating guillotine cuts, avoiding rotary and pneumatic complexity while improving cut consistency.

Electrical impedance shifts in a vibrating phaco tip reveal lens engagement in real time, helping surgeons adjust resonance and control.

Alternating inward and outward ring sections enable secure iris hooking for pupil expansion while reducing intraocular tissue damage during surgery.

A blunt, super-elastic eye implant disrupts trabecular meshwork without cutting, reducing bleeding and collateral tissue damage.

A multidirectional plate implanted between the sclera and conjunctiva creates an aqueous humor outflow path to lower intraocular pressure.

A three-step PACG procedure clears pupillary block, separates angle adhesions, and opens trabecular outflow to lower intraocular pressure.

Independent perfusion and suction passages stabilize intraocular pressure during phacoemulsification with pump-driven flow and pressure regulation.

A non-uniform internal bore improves gas flow, flexibility, and mass distribution in pneumatic drive lines for surgical instruments.

A ball-joint and sliding rod interface reproduces trocar-constrained hand motions, letting surgeons control vitreoretinal robots more naturally.

A tubular guide keeps eye access stable while retractable implements are swapped through one entry point to reduce injury, leakage, and delay.

Differential flow feedback adjusts irrigation pressure during phacoemulsification to offset fluid leaks and stabilize intraocular pressure.

A blunt tissue engager and superelastic shaft enable continuous trabecular meshwork removal with less bleeding and easier canal tracking.

A self-piercing stent with integrated retention members improves Schlemm canal placement and resists clogging to maintain aqueous humor drainage.

An integrated holder and base structure cultures cell sheets and embeds them in hydrogel with less contamination, waste, and handling complexity.

A retractable sheath with rim actuators keeps intraocular needles secured until eye contact, improving insertion control and injection reliability.

Pivotable rotary arms fold and tuck IOL haptics for small-incision delivery while preserving lens alignment and stabilization in the eye.

Pressure sensors and a controlled bypass valve stabilize intraocular pressure after occlusion breaks to reduce eye collapse risk during cataract surgery.

A CP-SSOCT distal sensor guides transscleral subretinal injection with real-time depth control despite scleral opacity and hand tremor.

A flanged depth guard limits nozzle penetration while a biasing element smooths plunger motion to reduce trauma during lens delivery.

This implant uses localized ciliary-muscle contact to adapt to anatomy, preserve aqueous humor flow, and reduce tissue deformation.

A coaxial docking and cutting instrument stabilizes the eye and guides accurate, reproducible LRIs without costly laser equipment.

A light therapy device segments wavelengths to promote eyelash growth while a scleral shield blocks harmful radiation from reaching the eyeball.

Ultrasound-activated microbubble cavitation fragments cataracts while preserving the lens capsule, reducing tissue damage risks.

A dual-blade microsurgical device with a beveled platform precisely cuts and removes trabecular meshwork tissue.

A multi-stage variable-flow restrictor uses a conical valve and spider membrane to dynamically adjust aspiration flow rates.