Stents TRIZ Cases

A distal suture release mechanism keeps a replacement heart valve recapturable during deployment, improving placement control through tortuous anatomy.

A holder with retaining members and orientation cues aligns prosthetic heart valves for faster, more accurate crimping with fewer errors.

Oblique anti-migration supports and elastic loops anchor a self-expanding esophageal stent against peristaltic axial forces while preserving lumen diameter.

Using a porous membrane bag and tensioned extensions, this case shows embolic debris capture without a wire frame while maintaining blood perfusion.

Dual threaded irises compress and load a stent in fewer steps, reducing crimping complexity, cost, and handling effort.

A rotatable nosecone and bearing let the shaft turn while the handle stays steady, improving catheter alignment and distal tip bending.

Dual pinch engagement and separate linear and rotational drives give catheters and guide wires precise, responsive navigation control.

A ball-and-socket nosecone pivots through curved vasculature to cut axial force, lower friction, and reduce gap formation during valve delivery.

An expandable embolic filter and locking sheath stabilize cardiac valve delivery while protecting aortic arch branch vessels from debris.

A tapered balloon nosepiece helps a prosthetic heart valve delivery tool pass anatomical obstacles and deploy the implant precisely.

A multi-zone expandable anchor with atrial and ventricular skirts secures mitral valve implantation while limiting obstruction and dislodgment.

A steerable capsule and pull-wire delivery approach enables prosthetic heart valve repositioning, retrieval, and lower-trauma implantation.

Opposed steering sections create free space near a cardiovascular defect, helping deploy patches without straining the weakened vessel wall.

Rotatable plates with spaced projections engage the stent at multiple points to improve positioning accuracy and control expansion during delivery.

A two-stage outer sleeve deployment keeps the implant constrained until alignment is verified, improving placement in the prostatic urethra.

Independent or simultaneous leaflet anchors improve prosthetic valve sealing and reduce regurgitation through less invasive transvascular repair.

A nested catheter and slidable guidewire system enables single femoral access to exclude iliac aneurysms while preserving internal iliac blood flow.

Flexible multi-loop retaining ends keep a ureteral stent in place while reducing tissue contact, irritation, hemorrhage, and urinary urge.

A cinching mechanism compresses a side-delivered prosthetic heart valve for catheter delivery, then releases for large-annulus sealing.

A decellularized PGA scaffold with ECM coating improves graft patency while resisting dilatation, calcification, and immune response.

Exposed troughs at the greater curvature anchor the stent-graft, while covered lesser-curvature crests keep flow-aligned surfaces to lower thrombosis risk.

A stent-graft flow restrictor redirects aortic or venous blood to improve renal perfusion, enhance diuresis, and reduce fluid overload.

Adjustable anchor foot angles and contact area distribute load at the annulus to secure a prosthetic valve without puncturing heart tissue.

Color-matched knobs and indicators help verify shaft flex adjustment, improving prosthetic valve placement and reducing paravalvular leakage.

Funnel-shaped connectors let the stent hinge in multiple directions without kinking while preserving radial support, patency, and deployment accuracy.

Axial fingers shield prosthetic valve leaflets from metal struts during crimping, enabling uniform compression and reducing component damage.

Spiral tracks and stationary slits guide linear jaw motion to crimp prosthetic valves with lower force, lower stress, and sterile manual use.

Bent struts and staggered loop alignment let a helical stent crimp smaller with less strut interference while preserving radial support.

Recessed branch openings and guided deployment improve access to tortuous aortic arch vessels while simplifying branched stent graft placement.

A guarded penetrating catheter enables minimally invasive CSF shunt placement via the inferior petrosal sinus to reduce VPS complications.

Serpentine brace elements between adjacent stent rings add rigidity, reduce buckling, and improve placement accuracy in long stents.

Curved resection blades remove obstructive valve leaflets before valve-in-valve deployment, helping preserve coronary blood flow.

Axially moving stent spines expand to large vessel diameter while preserving blood flow, reducing ischemia risk during aortic treatment.

Interwoven wires of different diameters let the stent compress for femoral delivery, then provide strong aortic support with low fluid permeability.

A common laser wavelength and pressure-controlled sintering keep nickel-titanium composition uniform in additively manufactured medical devices.

A non-porous polyisobutylene matrix around electrospun fibers improves heart valve durability while avoiding lifelong anticoagulant therapy.

An ultra-thin PTFE liner with flat-wire coil, braid, and graded durometer jacket balances large lumen, lubricity, flexibility, and pushability.

Facing side branch portals simplify branch wire placement in aortic arch stent grafts, enabling less invasive access to branch vessels.

A blood-absorbing annular seal expands after implantation to stabilize an atrial heart valve, cut leakage, and avoid leaflet damage.

A balloon-mounted stent with protruding features improves vessel-wall drug delivery while reducing dosage and supporting precise unsheathing and expansion.

Polymer-coated stent pockets and partitions raise lumen-wall friction to resist migration while limiting tissue ingrowth and easing retrieval.

A foldable self-expanding frame and regurgitation drum let large tricuspid valves pass through standard catheters while controlling backflow.

Measures distal and proximal vascular pressure over a preferred guidewire, avoiding catheter blockage and repositioning errors in FFR.

A locking arm couples the handle to the introducer sheath to hold prosthetic valve position during capsule retraction and avoid readjustment.

Radiopaque markers and symmetrical crimping help place a transcatheter valve at the right annulus depth to avoid leakage and conduction issues.

Implanted circumferential electrodes map spontaneous atrial fibrillation signals in daily life to pinpoint arrhythmogenic foci before ablation.

An intravascular renal vein pump uses a protective cage and occlusion control to lower venous pressure, improve kidney perfusion, and limit backflow.

A compliant intraluminal chamber stores and releases pressure energy to lower pulse pressure, raise diastolic pressure, and improve coronary flow.

A bore restriction lets sheath material be pulled distally to expose the stent proximally, simplifying delivery and reducing dislodgement risk.

A control rod and ligature mechanism lets a stent graft be radially constricted, repositioned, and anchored more accurately during aneurysm repair.