Stents TRIZ Cases

Hierarchical polymer micropatterns anchor a biliary stent, reduce migration and fouling, and avoid flap-related tissue irritation.

Fluorescence intensity tracking estimates ureter stent placement duration in real time, helping reduce tissue damage after calculus fragmentation.

Movable imaging units around a covered stent window improve hole-edge visibility and support, helping guide wires pass more smoothly.

Separable circumferential stent links preserve initial radial support, then unlock to improve vessel compliance and later expansion.

Discrete attachment flaps and tethers replace a full ring, letting a stent graft compress to 9-15 French for safer vascular deployment.

Segmented undulating struts dilate the prostatic urethra while reducing migration, encrustation, and blockage of ejaculatory ducts.

A guiding thread or wire helps align a stent-graft with branch vessels in one delivery step, reducing X-ray use and procedure time.

An undulating ring expander conforms to the prostatic urethra to maintain patency while reducing migration, encrustation, blockage, and pain.

An undulating ring expander conforms to the prostatic urethra to limit migration and encrustation while maintaining urinary flow.

Body-warmed nitinol bristles curl to create blood turbulence, improve clotting, reduce endoleaks, and support vessel remodeling.

A safety button and staged control knobs improve prosthetic valve positioning while reducing trauma during catheter deployment and withdrawal.

A dual-weave covered stent membrane creates a puncture-friendly fenestration zone while preserving graft integrity to reduce endoleak risk.

A flexible rack and rotatable linkage retract the sheath smoothly, reducing guidewire kinking and force buildup during stent deployment.

A selectively openable internal duct lets a main-vessel prosthesis seal diseased arteries while preserving branch access and blood flow.

A compressed anchor passes through a narrow heart wall channel, then expands in the pericardial space to improve cardiac device retention.

Segmented stent coating with anti-migration elements and separation regions improves anchoring while allowing easier removal and repositioning.

Elastic fixing at woven strand intersections prevents entanglement and displacement while improving uniform stent expansion and end force.

Shape memory members deploy a sealing cuff around the heart valve stent to fill tissue gaps and minimize paravalvular leakage.

A dual rotary and push-pull catheter handle improves implant positioning, sheathing control, and force transfer in tortuous vessels.

Segmented polymers, braid overlap, and an elastic hypotube improve catheter torque transmission while easing navigation in tortuous arteries.

Interwoven fine and coarse filaments improve plaque coverage and deployment accuracy while reducing plaque fragmentation and vascular damage.

A catheter-guided bypass prosthesis diverts blood into a second vessel while preserving distal flow, reducing trauma versus open coronary bypass.

Coiling sealing members expand against native tissue to improve prosthetic heart valve sealing and minimize perivalvular leakage.

A catheter actuator and locking mechanism rotates the replacement heart valve by a known amount for predictable commissural alignment during deployment.

Layered braided, elastic, and polymeric sheath construction enables radial expansion without axial elongation, lowering insertion force during prosthetic delivery.

An undercut proximal restraint locks the stent against migration, protecting the catheter and improving deployment accuracy in tortuous vessels.

An internal support channel and guidewire path help double-branch aortic stent-grafts deploy through arch branches without kinks or misalignment.

Axial sinus-engaging arms secure an aortic valve prosthesis with less radial leaflet stress, lowering leakage and embolism risk.

A self-expanding occlusion element covers the aneurysm neck to block blood flow, shorten procedures, and reduce repeat intervention.

An outer cuff with radially extending fingers fills valve-tissue gaps to reduce paravalvular leaks in collapsible heart valves.

A spine-biased delivery shaft uses aortic arch geometry to passively align prosthetic valve commissures and lower coronary obstruction risk.

An elliptical or flat spiral wire intercepts smaller emboli while resisting blood-flow deformation and reducing turbulence in vessels.

External magnetic actuation expands a stent without manual pushing, improving catheter position stability and deployment accuracy.

Discrete skirt reinforcements constrain billowing across valve frame openings, reducing leaflet contact, abrasion, and durability loss.

Segmented composite lattice prostheses balance adjustable lumen expansion with resistance to dilation and creep under physiological pressure.

A guide member supports the valvular stent to prevent inner core tube flexing, improve guide wire passage, and avoid tine twisting.

A lead screw and loading nut advance the delivery capsule with consistent force, reducing manual effort during prosthetic valve loading.

A re-sheathable closed-cell stent enables precise cerebral venous sinus placement while preserving flow and reducing restenosis risk.

A flexible rack and gear mechanism retracts the deployment sheath with less force while maintaining guidewire position and reducing kinking.

V-shaped support sections and a bioresorbable zinc alloy help this stent deliver higher radial force while avoiding surgical removal.

A non-uniform balloon and stopper structure improves prosthetic heart valve positioning and expansion while reducing LVOT obstruction and pacing needs.

A collapsible frame, reinforced leaflets, and a protective crimping sleeve cut delivery profile while preserving durability and leak control.

Floating limiting strips keep the valve stent engaged during deployment, reducing friction and preventing sudden release or detachment.

A separated inner and outer tube layout keeps the guide wire tube fixed during sheath retraction, enabling precise stent placement without assistant support.

Interchangeable braiding sleeves form a vessel-matched mandrel, cutting the time and cost of producing patient-specific stents.

Supra-annular supports and axial-style delivery stabilize a prosthetic heart valve, enabling larger valve deployment and annulus alignment.

A non-cylindrical tapered frame enlarges the outflow orifice to cut turbulence, pressure gradients, and paravalvular leakage in prosthetic valves.

A collapsing suture keeps the sealing skirt flat during delivery, then expands it outward to improve vessel sealing without raising profile.