Eye Surgery TRIZ Cases

An integrated intraocular pressure sensor and drainage device uses a flexible porous biocompatible material to monitor pressure while draining fluid.

A thermal management algorithm adjusts ultrasonic power based on irrigation fluid flow to maintain safe operating conditions.

A vitrectomy probe uses a pneumatic vane actuator to rotate an inner cutting member for tissue removal.

Centering means in the handle pre-align metal tips, absorbing lateral forces and preventing distortion from plastic aging.

A self-expanding pupil expander uses radially extending iris cups to mechanically dilate the eye.

External wireless power activates an implantable pump to periodically flush the outflow site, preventing scarring and maintaining intraocular pressure control.

Pulsed infrared radiation detects aspiration line occlusions, reducing detection time from milliseconds to under 0.1 milliseconds.

A capsularhexis device uses an angled transitional neck to guide a superelastic wire loop for precise tissue cutting.

An electromechanical injection device uses a stepper motor and lead screw to deliver precise dosages, preventing tissue damage from uncontrolled flow rates.

Electro-osmotic pressure gradient drives dynamic valve adjustment to overcome fibrosis-induced resistance and maintain stable intraocular pressure levels.

Merged clamping and cutting functions in one instrument eliminate bimanual coordination, reducing operation time and injury risk during pterygium resection.

Digital overlay of preoperative alignment data onto dilated eye images provides a precise angular reference for toric intraocular lens placement.

Outward-facing pockets on a flexible ring engage the iris perimeter to maintain pupil dilation while preventing tissue trauma and incision snagging.

An asymmetric needle tip generates eccentric motion during longitudinal vibration to improve tissue emulsification efficiency.

Vacuum-based aspiration pumps detect occlusions via isolated pressure sensors, preventing post-occlusion surges that cause eye trauma.

A posterior segment drainage system regulates intraocular pressure by directing fluid flow through a subconjunctival outlet.

A stacked multi-disk pump design conveys ocular fluid through parallel disk apertures to minimize flow resistance.

A pneumatic system uses proportional valves to maintain constant gas pressure across varying input pressures and usage rates.

Segmented actuators around a needle axis enable precise ultrasonic vibration patterns for lens emulsification.

Monitoring the pneumatic valve exhaust pressure profile distinguishes connected and disconnected states, eliminating output-side tubing volume.

Segmented aspiration tubing uses varying durometer sections to reduce occlusion break surge while maintaining maneuverability.

A surgical console regulates aspiration and irrigation pressures using real-time sensors to maintain stable anterior chamber conditions.

Real-time sensor feedback in a microwave thermokeratoplasty applicator adjusts energy delivery, preventing unpredictable thermal damage to corneal tissues.

A spring-loaded piston drives ophthalmic fluid to deliver intraocular lenses at constant speed.

A hollow body wrench with fluidic couplers connects multiple surgical handpieces in series.

An illuminated cannula integrates an optical fiber and light sleeve to transmit light into the eye interior.

Polarized light imaging captures hidden corneal collagen structures to resolve unreliable visible feature comparisons during surgical alignment.

Needle delivery places the shunt without scleral flaps, eliminating tissue trauma and bleeding risks associated with traditional dissection.

A phacoemulsification irrigation sleeve uses a distendable flap to direct fluid flow from proximal to distal ends.

Segmenting the hub and disposable cartridge exposes the rod for cleaning, preventing viscoelastic contamination between surgeries.

Segmentation separates the handle from the tip, resolving manufacturing cost versus attachment security trade-offs.