Stents TRIZ Cases

A sealed expandable shell with a form-stability member improves stent insertion, resists buckling, and supports wound drainage and irrigation.

A diverging conduit anchored in the ascending aorta reduces pressure loss from aortic stenosis while conforming to vessel curvature.

Graduated stent and sheath stiffness helps navigate tortuous venous sinuses, improve placement, and maintain lumen patency.

Magnetically coupled robotic hubs coordinate guidewire and catheter motion to reach supra-aortic branches with less complex maneuvering.

Transitionable linking members let the inner stent nest within the outer stent, shrinking valve diameter for smaller catheter delivery.

A blood-swelling reservoir inside a TIPS stent graft enables post-placement lumen narrowing to control shunt flow and reduce encephalopathy risk.

A guide wire channel and detachable tip lock keep the stent aligned during release, improving endovascular positioning accuracy and control.

Self-expanding waveform-ring branches adapt to variable aortic arch anatomy while maintaining secure vessel entry and stable post-surgical positioning.

Plasma-modified stent graft surfaces improve vessel-wall sealing and endothelialization while lowering thrombogenicity and graft infection risk.

Compressed SMP foam expands inside the aneurysm sac during EVAR to block endoleaks, support thrombus formation, and reduce reintervention.

A thin flexible electrode sheet placed in blood vessels enables high-resolution tissue sensing and fine stimulation while limiting invasiveness and clot risk.

A perforated elastic intestinal anchor uses a sealed inner sheath and vacuum control to hold for healing, then release on time to reduce migration risks.

A motorized handle rotates the delivery shaft to control sheath retraction, preventing valve jump and improving anchoring during implantation.

Distal tensioning members and positioning controls enable precise transcatheter valve expansion without stretching or slippage during navigation.

Expandable implants reshape the aortic arch wall to trigger a stronger baroreflex and lower blood pressure while avoiding carotid sinus risks.

A percutaneous implant with anchors and a retriever helps create and mature AV fistulas by expanding vessels, improving flow, and reducing trauma.

Noncontiguous stent surface patterns guide endothelial cells in multiple directions, speeding coverage and lowering thrombosis risk.

Opposing jaws and an integrated feeder advance catheters and guidewires without added carriages, reducing buckling and driver complexity.

Expandable ventricular wall anchors replace annular radial force, enabling percutaneous tricuspid or mitral valve replacement while reducing heart block risk.

A resilient release member disengages stent projections at the target site, enabling full expansion and smoother delivery in tortuous vessels.

A lockable tapered valve cover guides prosthetic heart valves into the delivery sheath, cutting prep time while preserving sterile, precise assembly.

An intraluminal C-shaped implant supports the cartilaginous airway wall to keep ECAC airways open while reducing tissue reaction and growth restriction.

A self-expanding curved eye stent keeps Schlemm's canal open to improve aqueous humor drainage and lower intraocular pressure.

Shape-memory tension rings expand the prostatic urethra to improve urine flow with less invasive placement, shorter recovery, and stable positioning.

A tapered loading funnel and locking collar store implantable devices in a partially collapsed state for lower-damage loading onto delivery tools.

A tyne assembly docks to a prosthetic valve frame to stabilize PCI device positioning and improve access to the coronary ostium.

A movable fenestration with looped stent rows reduces branch graft interference while preserving graft durability, sealing, and X-ray positioning.

Angled expandable struts, penetrating anchors, and dual-balloon deployment secure stent grafts against migration, leakage, and mispositioning.

Runner wires stiffen a valve delivery shaft in one plane while preserving perpendicular flex for precise transseptal placement and release.

Pre-folding prosthetic valve leaflets with a crimping accessory reduces damage and void spaces, enabling smaller crimp diameters.

A helical tubular balloon expands from a low-profile insertion state to create a lumen that helps catheters and stents pass tortuous vessels and stenoses.

Bioglue delivered between primary and secondary aortic stent grafts improves sealing in complex anatomy and helps prevent endoleaks.

Variable porosity in a conical bifurcation implant preserves microcatheter access while diverting blood flow and covering the lesion.

A rhenium-alloy valve frame cuts delivery profile and recoil while improving radial strength, placement accuracy, and leak resistance.

A P-15 peptide coating on spinal fusion cages and inorganic particles reduces foreign body inflammation and fibrosis while supporting bone integration.

A porous electrospun PTFE coating helps stents support endothelial growth, reducing turbulent blood flow, thrombosis risk, and lumen trauma.

A reinforced flared rim with higher scaffolding density increases stent retention force and helps prevent migration, leakage, and tissue damage.

A locking spacer plate and movable irises simplify stent radial compression while preserving reliable open and closed positioning.

Curved struts with pivotable junctions let a prosthetic heart valve frame expand and compress without buckling or deformation.

Combining PPR inner support with NPR foam enables a stent to expand radially under deformation while applying vessel-wall pressure.

A rotatable locking member and multiple pulling wires improve implant locking, release, and withdrawal control during catheter delivery.

Radially movable connection members let a steerable delivery catheter retain, deploy, and reconnect intravascular devices with more precise positioning.

A flexible skirt and radial support structure seal branch-to-main stent gaps despite misalignment, helping prevent type-III endoleaks.

A telescoping capsule enables partial deployment and resheathing of prosthetic mitral valves for precise positioning in complex anatomy.

A rotating-then-sliding handle overcomes static friction during sheath retraction, enabling steadier and more controlled stent deployment.

A ventricular anchor clips around the native mitral leaflet so the spacer seals during systole and moves aside in diastole to reduce regurgitation.

A rotating tube and sheath mechanism helps align prosthetic and native valve commissures during catheter implantation, reducing obstruction risk.

Inflatable, 3D-customized vaginal stents improve fit for pediatric and oncologic patients while easing insertion, removal, and post-treatment support.

A micro-rough adjustable stent coating jig fits multiple sizes while reducing membrane sticking, process cost, and installation space.

A deployable strut-and-screen trap captures calcified valve debris below the aortic valve without blocking blood flow or surgical access.

Oxidation-insensitive drugs combined with lipophilic antioxidants prevent premature release while maintaining mechanical integrity of the balloon catheter.

Embedded microelectromechanical sensors monitor valve function to detect paravalvular leakage and aortic regurgitation without increasing device complexity.

Nanoscale microwave ferrites on a stent detect in-stent re-stenosis and thromboembolism by converting blood flow dynamics into measurable frequency shifts.

Placing a marker inside the tubular body prevents contact during diameter reduction while maintaining X-ray visibility.

Segmented anchors with everted tips secure devices while limiting tissue damage through controlled penetration depth.

A combined introducer and expandable sheath uses radially folded tapered segments to transition between insertion and delivery profiles.

Dual lumen catheters isolate lesions with expandable occlusion devices, enabling safe stent deployment and fragment aspiration without rupture.

Segmented bristles distribute force uniformly across the lumen wall, preventing tissue extension and biofilm growth while maintaining fluid flow.

A three-dimensional coil featuring unclosed Möbius loops maintains structural integrity during vascular deployment.

Segmented inflation zones adapt to varying vessel geometries, reducing procedural complexity and time.

A porous tantalum coating withstands high strains without delamination on medical devices.

Pre-positioned auxiliary catheters enable precise fenestration alignment, reducing procedural complexity during aneurysm exclusion.

Segmented branch portions with independent tensioning strings enable precise alignment at intersecting vessels, reducing leakage and migration risks.

Radially expandable retention bumpers on balloon catheters prevent axial migration of crimped prosthetic heart valves by enhancing mechanical lock.

A removable stent uses a flexible sleeve to collapse across the pylorus and restore natural valve function.

Tapered stent side holes minimize flow stagnation via micro-milled geometry, reducing encrustation blockages and extending device lifespan.

Braided suture and release line enable controlled stent detachment, minimizing stress and motion during implantation.

A stent graft fixation system uses a guide suture extending outside the body lumen to enable precise fastener placement.

A dynamic annuloplasty ring adjusts its circumference via inward inner wall displacement, correcting residual regurgitation without causing mitral stenosis.

Dual ePTFE layers with distinct rigidity and plasticity block hole formation during crimping, preventing blood leakage.

Aspirating filter retrieval catheters use inflatable balloons to occlude blood flow, increasing suction pressure for efficient debris extraction.

Segmented expandable stents with hinged graft members maintain radial strength while navigating tortuous vessels without kinking.

A bioabsorbable stent scaffold uses kinetic models to determine molecular weight and monomer content for tailored degradation.

Ion nitriding and subsequent ion etching remove the compound layer from iron-based alloy stents while maintaining surface hardness for controlled absorption.

A steerable catheter handle uses a cam and follower mechanism to independently control flex magnitude and direction via axial and rotational adjustments.

A clot retrieval device uses a flexible cover that inverts over a capture structure to ensheath embolic material during extraction.

A collection catheter uses an annular sealing member spaced from the vessel wall to draw fluid into a lumen via suction.

Plasma-deposited fluorocarbon coating delays corrosion on magnesium stents, maintaining mechanical integrity during temporary medical use.

A variable stiffness catheter member enables controlled buckling of the graft cover, preventing binding with the stent stop to ensure complete deployment.

An artificial blood vessel access port features a soft center portion for needle insertion surrounded by a harder peripheral region that guides puncture direction.

A 3D image processing apparatus aligns coordinates with the stent axis to produce circular cross-section views.

A stent retrieval member uses a distensible band and shaped projection to expand or contract the circular base for secure attachment.

A stent cover uses regions of differing porosity to promote endothelialization at the ends while blocking cellular infiltration in the center.