Stents TRIZ Cases

A stent design with asymmetrically convex struts promotes laminar blood flow through optimized luminal surface curvature.

An inner tube houses an imaging device that enables precise positioning of the expandable implant within the prostatic urethra.

Thermally releasable connection points on the shaft allow secure advancement of the implant and clean deployment in blood vessels.

Fluid-driven hollow helical stents deliver high radial force for stenosed vessels by dynamically expanding from a compact linear profile.

Radially constricting ligatures maintain precise deployment alignment with branch vessels, preventing endoleaks and ensuring complete aneurysm sac exclusion.

Expandable fronds conform to vessel walls to cover branch ostia, preventing plaque shift and restenosis during deployment.

A stent removal device uses a suture loop to constrict the support frame for safe extraction.

A segmented stent uses a polymeric coating to allow axial translation of proximal and distal segments relative to the central structure.

A shape-memory bone nail transitions from straight to curved configuration during percutaneous insertion.

An interwoven heart valve frame eliminates rivets by using integral strut hinges, reducing embolization risk.

A dual-piercing surgical fastener anchors a prosthesis to the vessel wall using independent proximal and distal piercing ends.

A vascular flow diverter uses a low-porosity mesh cover to target aneurysm necks while minimizing metal exposure in healthy vessel segments.

A coiled member loops around a stent segment to enable controlled deployment via cannula rotation, preventing trigger wire damage.

Axially stretching the stent gathers the outer cuff to reduce loading forces and prevent snagging on delivery device edges during crimping.

A collapsible stent anchors an axial-flow blood pump within a vessel, enabling minimally invasive implantation and long-term support.

Self-expanding stents with variable radial strength prevent migration and re-stenosis in cerebrospinal venous insufficiency treatment.

Segmented circumferential bands with U-shaped bridges resolve adaptability complexity trade-offs during implantation.

A single wire implant transforms between primary and secondary shapes for precise placement.

Dynamic sheath rigidity reduces vessel puncture risk by transitioning from rigid containment during navigation to flexible deployment in curved aortas.

A ureteral stent features a coiled proximal end for anchoring and smooth-edged side holes to manage urine flow.

A drug-coated implant uses a temporary protective polymer layer to shield the active substance during delivery.

A stent structure with a biomimetic coating containing sugar alcohols reduces platelet adhesion.

Rotational tab engagement secures the drainage stent to the shaft, preventing premature release during medical device deployment.

Variable cut patterns in the elongate support member resolve torque transmission variability limits in complex vascular navigation.

A double-walled dilation balloon catheter uses longitudinal rib members to form sealed cavities between elastomeric layers.

Segmented seals maintain hemostatic integrity during axial movement, preventing thrombus formation by delivering anticoagulants to the basket apexes.

Microbead coating increases surface friction to prevent stent migration while maintaining repositionability.

A vascular puncture sealant carrier forms a sticky adherent layer on tissue using in situ chemical activation.

Segmented tubular side branch design enables deployment into blind vessels, resolving access difficulties while maintaining reliable blood flow.

A driving handle converts rotational input into linear slider motion via a spiral movable barrel mechanism.

A frozen support matrix secures fragile self-expanding stents during catheter insertion, preventing structural damage while enabling precise placement.

An external coagulation inducer skirt reduces gutter formation and type 1 endoleaks by blocking leakage paths.

A catheter tip spring element provides longitudinal flexibility and radial rigidity through elastic deformation.

Nested stents with sidewall openings enable bifurcated flow diversion, treating wide-necked aneurysms where single stents fail.

Mechanical stimuli alter blood vessel curvature to detect baroreflex responses, enabling precise implant selection for hypertensive patients.

A biodegradable stent uses a polymer coating to manage degradation rates within the body.

Tapered restraints and a rotatable core enable partial stent recapture, resolving vessel damage risks during tortuous navigation.

A medical drainage stent uses a proximal radial extension portion to provide a grasping point for precise surgical positioning.

An absorbable iron alloy implant uses an alkaline protector to delay early corrosion and preserve mechanical strength during initial healing.

Bendable delivery tubes position anchoring needles accurately, resolving the trade-off between minimally invasive access and firm implant anchoring.

Woven stents use intersecting and interlocking wire columns to match curved tubular organs while maintaining axial stability.

An over-the-scope stent introducer system delivers implants externally using a nested inner and outer member assembly.

Threading a radiopaque marker over a shape memory alloy wire before heat setting eliminates post-process electropolishing and reduces fabrication complexity.

An anchoring stent secures a recoiling part that extends and recoils based on blood flow, eliminating infection risks from external drive lines.

A prosthesis with slidable fenestrations adapts to branch vessel geometry within a pouch structure.

Interrupted spiral openings in the cannula wall enable localized stiffness control, resolving pushability versus flexibility trade-offs.

Adjusts laser power per tubing section to minimize the heat affected zone and ensure consistent strut widths in polymer stents.

Segmented balloons adapt to irregular anatomy while a gel-filled interstitial region provides thermal insulation and prevents displacement during ablation.

Segmented extrusion die shapes magnesium alloy tubes with precise coaxiality, avoiding processing hardening during large sectional area reduction.