Eye Surgery TRIZ Cases

A flexible cannula guides a needle through the choroid to access the subretinal space for fluid aspiration and therapeutic delivery.

Real-time vacuum monitoring detects occlusions and modulates aspiration rates to prevent post-occlusion surge and eye trauma.

Segmented fluidic barriers expel gas bubbles during priming, ensuring accurate intraocular pressure measurements.

A curvilinear cutting band instrument creates precise capsulorhexis incisions in the anterior capsule.

A hydraulic vitrectomy probe uses a pressure multiplier to convert pneumatic input into hydraulic actuation for precise cutter control.

A frequency control system for ultrasonic surgical tools adjusts operating frequency using dynamic phase locking mechanisms.

Twisting the helical corkscrew drains fluid to lower intracapsular pressure, preventing capsule tearing during ultrasound-assisted removal.

A membrane spatula with a hook-shaped tip grips and peels the posterior hyaloid membrane from the foveola.

A motorized intraocular lens delivery device uses a micro movement actuator to position and eject the implant with precise force control.

A segmented ocular implant utilizes porous struts to enhance aqueous humor drainage within Schlemm's canal.

Dual-mode cutting prevents tissue burning while a rigid support sleeve maintains needle stability in myopic eyes.

Teardrop-shaped irrigation ports prevent trailing edge bunching in tight incisions, maintaining fluid flow while easing sleeve insertion.

Nitinol wires shorten via Joule heating to rotate a surgical blade, resolving precision and efficiency trade-offs in ocular tissue incisions.

An expandable anchoring mechanism secures a short cannula inside the eyeball, preventing dislodgement and maintaining intraocular pressure during vitrectomy.

Magnetic induction coils transfer power and data between the AVS module and console connector, preventing moisture-related transmission issues.

Segmented proximal and distal portions rotate independently to eliminate rigid tubing strain during phacoemulsification procedures.

A handheld device with a detachable oscillating head delivers sub-sonic vibrations to massage eyelids and break down gland accretions.

An oscillating handheld device stimulates meibomian glands while a proximity system prevents injury, resolving safety versus effectiveness trade-offs.

Beam splitting and attenuation manage illumination intensity across multiple fibers to resolve insufficient brightness in thin surgical instruments.

Segmented vitrectomy probes expand proximally to reduce flow resistance while minimizing ocular trauma.

Segmenting movement into a robotic fine-adjustment unit and a braked coarse-link mechanism prevents large excursions that could damage the eye during surgery.

Curved medial projections with sockets and fillets distribute compression forces evenly, preventing tissue trauma during retinal surgery.

Rotating the dual lumen work tip switches fluid flow direction, eliminating instrument exchanges during cataract surgery.

A motorized surgical instrument advances a nitinol needle obliquely through the sclera to access the subretinal space.

Automated pump switching maintains consistent aspiration flow rates in ocular probes during phacoemulsification procedures.

Optical sensors detect corneal curvature shifts during surgery, triggering anti-vacuum surge activation to prevent tissue collapse.

A quick release filter assembly uses a flange mechanism to enable rapid component removal from pneumatic surgical modules.

Rectangular cross section nitinol rings eliminate hot spots to ensure uniform heating and smooth capsulotomy edges.

An optical detection system using coherence tomography tracks tissue distance, compensating for hand tremor and maintaining precise incision depth.

Hydrodynamic fluid streams remove glandular tissue via cavitation, eliminating thermal damage to non-glandular structures during minimally invasive procedures.

Curved injection needle traverses the sclera to deliver a sustained-release implant directly into the choroid layer near the optic disc.

Relocating pressure sensing to the console via a second pump resolves handpiece complexity and ergonomic constraints.

Direct phase detection eliminates integrators and A/D converters, resolving the trade-off between measurement precision and device complexity.

Dynamic switching between automatic and manual irrigation fluid source height control resolves surgeon attention diversion during ocular surgery.

Illuminated lens apparatus uses ring bushings to position probes, resolving hand freedom conflicts and eliminating ocular surface cuts.

A wearable user interface overlays surgical parameters on a peripheral display, resolving the conflict between visualization precision and surgical efficiency.

A control circuit retracts the plunger at peak compression to allow lens material relaxation, preventing deformation during injection.

Segmented vault channels allow cannula passage to evacuate trapped OVDs, preventing postoperative IOP elevation.

A transparent rectangular cannula stabilizes tissue grafts during transport.

A one-step vitrector uses a pneumatically driven guillotine cutter to remove vitreous floaters through a single scleral opening.

Disposable ocular needles use color-changing handling means to indicate usage status, preventing cross-contamination from reused tools.

A sterile gas supply directs desiccated air through an annular body onto the front lens surface to maintain optical clarity.

A self-modulating damper with a resiliently flexible element disperses high-amplitude vacuum pressure oscillations to enable fine control.

Segmented optic and flexible haptics enable micro-incision insertion while recessed protrusions secure the device in the capsular bag.

A fixed-shape cannula delivers a radionuclide brachytherapy source through the subtenon space to the posterior eye.

A bioimpedance probe identifies ocular tissue types at the surgical tool tip using insulated conductors to complete an electric circuit.