Stents TRIZ Cases

Segmented wire apices extend beyond graft edges to improve attachment security while minimizing blood flow interference.

Flexible bridge connects two stent grafts to reduce leg separation and endoleak risks during deployment.

A tubular medical instrument made from shape memory alloy undergoes controlled cooling to reduce sliding load during deployment.

A biodegradable magnesium alloy composition containing specific rare earth elements and minor additives.

Heat treatment modifies biodegradable polymer crystallinity to enhance radial strength.

Segmented braid patterns balance fluid diffusion and aneurysm occlusion by varying local porosity.

Nanostructured stent covers selectively adhere endothelial cells to prevent restenosis without drug-eluting coatings that cause blood clots.

Axial rod translation and wire release adjust stent diameter and length, resolving anatomical variability without custom sizing.

A sensor-actuator pivots into a vessel lumen to measure blood flow.

A clutch mechanism with engagement and disengagement portions controls axial movement of a travelling component in a prosthetic valve delivery apparatus.

A stent design uses segmented extension portions and a bridge portion to connect adjacent wave-shaped struts.

A wireless ablation catheter uses an emitter coil and balloon insulation to transfer energy efficiently.

Biodegradable coating offsets tissue ingrowth, maintaining flow channel patency and reducing pulmonary congestion.

Nested sheaths deploy a dynamic wire weave retrieval end that compresses captured devices for safe percutaneous removal.

A prosthetic heart valve stent with a flared portion and engaging arms anchors within the native valve annulus.

Additive electrical traces and nest support structure reduce device size and production time for ultrasound invasive medical devices.

Wheel actuation enables partial deployment verification while preserving resheathing capability to prevent accidental full expansion.

Cooling nitinol stents below the martensite finish temperature prevents recoil during loading, reducing friction and buckling risks in delivery systems.

A dual-layer stentriever integrates clot retrieval and radial expansion to treat cerebral occlusions.

Nested sheaths deploy expandable arms to retrieve implanted devices, avoiding open surgery and minimizing tissue damage.

A prosthetic valve uses an elongate member that shifts from longitudinal to diametrical orientation to regulate fluid flow.

Resilient anchoring body transitions from compressed insertion state to expanded bladder configuration, reducing urethral irritation and infection risk.

Segmented balloon catheters with annular gaps preserve guidewire access during bifurcation stenting, resolving threading contradictions.

A blow molding mold uses integrated liquid channels for synchronous temperature control.

Flat or concave apexes distribute compression forces to reduce lateral deflection in curved vessels.

A fluid injection tube transitions from a linear to helical configuration using shape memory materials.

An implantable shunting device redirects blood from the left atrium to the azygous vein through an expanded flexible tube.

A conductive implantable graft applies a negative electric charge to resist microbial adherence and blood clotting.

Segmented bioabsorbable coatings with crystalline drug layers resolve thickness versus flexibility contradictions in small vessel access.

A stentless vascular valve uses flexible membrane structures to secure positioning within a vessel.

Segmented graft walls create adluminal and abluminal channels that receive branch portions, reducing gutter formation during aneurysm repair.

A micro-needle array delivers drugs through a porous mesh layer that ensures uniform distribution.

Multiple catheters enable push-pull positioning to resolve buckling in tortuous vasculature while maintaining axial control.

Segmented knot rows unravel at distinct rates, resolving the trade-off between deployment precision and structural complexity.

Direct current electrostatic attraction secures clot adhesion during retrieval, reducing device passages and secondary stroke risk.

Segmented sealing and nested actuators enable precise axial movement of the outer tube while maintaining pressure in the radial gap.

An anchor device with a suture loop guides filling structures through the stent to form a seal against the blood vessel wall, preventing leakage and migration.

Integral overlapping segment creates an inflatable balloon structure to reduce insertion force and minimize tissue trauma in medical feeding tubes.

Two balloons seal uterine punctures to prevent fluid loss and infection, enabling stable amniotic fluid volume during continuous infusion.

S-shaped curved webs in the stent mesh provide sufficient radial force for stenosis treatment despite a highly compressed delivery profile.

A removable expandable support member with annular wing members positions ablation elements at the pulmonary vein antrum.

A porous interatrial pressure vent stent reduces left atrial pressure by directing blood flow through the coronary sinus while minimizing thrombi risk.

Offset mandrel chucks enable automated laser cutting of tubular medical fabrics, eliminating uneven edges and loose fibers from manual heat tools.

An intermediate tubular member bridges thermally incompatible materials to resolve bonding feasibility issues while enabling precise flexibility transitions.

Integrated flow conditioners maintain kinetic energy by aligning blood vorticity and helicity, reducing mechanical workload on the heart.

Pre-formed bores at stent apices replace vertex attachment points, preventing trigger wire crimping and barb entanglement during compression.

Segmented tubular delivery system navigates tortuous prostatic urethra anatomy, enabling precise implant placement while minimizing tissue trauma.

Segmented wire rows with connecting bridges prevent foreshortening migration, enabling precise biliary duct placement and re-constraint.

A deployable support structure expands within the femoral neck to transfer mechanical loads from bone tissue.