Stents TRIZ Cases

Adds balloon volume in controlled steps without deflation, enabling more precise prosthetic heart valve deployment with less procedure time.

Optic fiber sensors in a prosthetic valve delivery assembly track pressure, expansion diameter, and radial force during implantation.

A removable bladder neck implant uses a plane pressure structure to widen constriction while avoiding tissue denaturation and easing retrieval.

An expandable frame and embedded undulating leaflet support let a pediatric heart valve grow with the annulus while maintaining coaptation.

Mo-Re alloy elongate members with hafnium improve strength and shape retention in small catheters while reducing MRI artifacts.

A threaded retaining ring and valve lock slow self-expanding valve release for precise aortic placement and reduced tissue trauma.

A funnel-shaped flexible extension and lassos let absorbed IVC filters be retrieved or safely abandoned without tearing the IVC.

Wire-arc connector rows let a catheter-delivered heart valve frame anchor native leaflets at multiple levels without open-heart surgery.

A shape-memory pyloric implant anchors across the pylorus to slow gastric emptying, increase satiety, and enable less invasive obesity treatment.

Electrospun fibers in a non-porous polyisobutylene matrix create heart valve leaflets with higher durability, lower calcification, and no anticoagulant need.

An adhesive-loaded lumen-apposing stent delivers therapy at the treatment site while improving fixation, reducing migration, and supporting tissue healing.

A spring-linked unlocking tube moves proximally to expose the hanging ear connection, enabling smooth and reliable valve stent release.

Fine braided strands and low-oxide heat setting improve vessel-wall apposition, flexibility, and deployment in tortuous aneurysm vessels.

A staged retainer mechanism helps an expandable valve frame seat securely in enlarged aortas while limiting jumping and enabling recapture.

A plane pressure implant expands the bladder neck with even low surface pressure, avoiding ischemic tissue denaturation and enabling retrieval.

A rotatable shaft and retaining ring control self-expanding valve release for precise aortic placement with less trauma.

Amnion tissue covering on a stent scaffold improves re-endothelization, lowering restenosis and subacute thrombosis risk.

A steerable transcatheter cutter and capture tool removes leaflet clips or cords while avoiding open heart surgery trauma.

Helical shaft adjustment, interlocks, and radiopaque alignment enable precise sequential tack deployment while keeping vascular treatment efficient.

A recessed end and tapered braided structure improve tissue ingrowth while limiting blood-exposed surface area to reduce thrombotic embolism risk.

A coronary sinus stent creates a controlled left atrium outflow path to relieve pressure while limiting thrombi and emboli passage.

An elastic wave-pattern wire implant maintains sphincter pressure during tissue movement while promoting scar tissue growth to reduce migration.

Sequential release, flexible guidance, and coolant control help position a self-expanding heart valve accurately while reducing vessel damage risk.

A guidewire and fenestration alignment device helps position lateral graft openings at branch vessel ostia, reducing deployment complexity and flow blockage.

A wire outer structure and inner fluid-guiding gaps keep urine flowing even under compression and resist tissue blockage.

Omni-directional spiral thin-film Nitinol mesh conforms to irregular anatomies while preserving integrity and enabling local therapeutic delivery.

An orientation mandrel and pre-formed catheter curve align replacement valve commissural posts with the native valve during TAVR.

Gradual coronary sinus occlusion lets the myocardial venous system adapt before shunting oxygenated blood for retrograde revascularization.

Support arms and sealing skirts anchor a catheter-delivered aortic valve stent beyond friction alone, reducing migration and paravalvular leakage.

Layered polymer and drug coatings localize anti-thrombotic and anti-proliferative release to cut thrombosis, restenosis, and systemic exposure.

A 3D-printed biodegradable flow diverter uses tunable pore geometry to regulate aneurysm blood flow, support healing, and avoid permanent metal implants.

Localized enlarged anchor segments and serrated struts improve vessel wall grip, reducing venous stent migration despite sizing errors.

A shape-memory valve frame stays biased against the vein wall under hydrostatic load to restore venous flow and limit regurgitation.

A biomatrix core and biocompatible polymer scaffold support aneurysmal vessels while limiting dilation and avoiding stiff graft mismatch.

A template-guided reloading kit helps add patient-specific fenestrations to stent grafts and reinsert them with less damage and manual handling.

A template-guided reloading approach adds patient-specific stent graft fenestrations while preserving graft integrity and renal artery alignment.

Interconnected braid sections deploy as one implant to isolate bifurcation aneurysms while preserving blood flow through branching vessels.

Specific crown angles and angled struts help thin-profile stents resist lifting and distortion while preserving radial strength and deliverability.

A rotatable locking member and pulling wire improve artificial heart valve release, withdrawal, and positioning inside the body.

A swelling chitosan layer keeps the urethra open and supports hemostasis, reducing catheter discomfort, infection risk, and removal needs.

Interval anti-retraction members add friction along the stent to prevent axial movement and shrinkage during sheath withdrawal.

A threaded shaft and retaining ring drive axial sheath release to prevent self-expanding valve jump and limit anchoring in healthy tissue.

A rotatable locking member and pulling wire improve implant restraint while enabling smoother expansion, release, and withdrawal in the body.

A compressible transfer sleeve forms a fluid-tight cavity around the delivery shaft to protect valve implants and maintain sterility during insertion.

Tetrapeptides regulate extracellular matrix production to limit fibrosis and support long-term cardiovascular remodeling after injury.

Nested cinching and anchoring drivers reshape the mitral annulus through a lower-profile catheter while reducing cardiac wall contact.

Sacrificial branch ports let guidewires bypass the main graft body for easier contralateral access, then close to contain blood flow.

Alternating braid high points counter helical bias from mixed wire sizes, preventing rotation, detachment, and deformation during delivery.

A reentry tip exits through an intravascular aperture to bypass arterial occlusions via the vessel wall and restore blood flow with less invasiveness.

A guidewire-delivered pericardial anchor secures cardiac devices with a tethered low-profile design that reduces effusion and tamponade risk.

A monorail catheter uses a separation guide to maintain precise wire direction within the outer tube.

A flat superelastic wire forms a coaxial spiral structure to intercept thrombi while maintaining stable blood flow dynamics.

Segmented branch members with dynamic sealing elements minimize aortic dissection risk while maintaining fluid-tight integrity during cardiac motion.

A nested filter and collection device system retrieves trapped debris from body lumens.

Rib-supported rings enable nitinol valves to fold for catheter delivery and expand in large veins.

Monophasic magnesium alloy with precise zinc content eliminates microgalvanic corrosion to ensure uniform resorption and prevent harmful gas bubble formation.

A transcatheter delivery system compresses a prosthetic heart valve for compact venous navigation.

Asymmetric web deformation creates torsional engagement that anchors thrombi securely and prevents detachment.

A catheter system delivers magnetic anastomosis devices through natural orifices using a wire guide and expandable balloon.

Thermoplastic adhesive bonding prevents fiber braid delamination during heat sterilization, maintaining structural integrity.

Independent self-expanding stent elements nested within a delivery shaft prevent vascular wall injuries caused by mechanical stress.

Expandable strut structure with diverter element redirects blood flow toward the ophthalmic artery, addressing inefficient treatments for eye diseases.

Staggered stent apexes lower the delivery profile, reducing surgical invasiveness and mortality risks.

Radiation sterilization preserves mechanical integrity while achieving sterility, resolving the trade-off between reliable disinfection and polymer degradation.

Segmented flexible tube prevents gastric inversion and minimizes frictional discomfort during stomach movement.

Spherical indenters distribute pressing force uniformly to prevent stress concentration and cracking in marker housing structures during assembly.

Segmented serpentine bands expand sequentially to treat complex bifurcation lesions while maintaining structural integrity.

A retrieval device uses a hook assembly and capsule to collapse and extract gastrointestinal implants through endoscopic techniques.

Solvent softening embeds drugs into balloon catheters, eliminating complex microcapsule manufacturing steps.

A core advancement wire engages stent anchor members to move the device through tortuous vasculature, reducing radial expansion and vessel trauma.

Segmented endoluminal prosthesis with nested connection branches reduces anastomosis complexity and bypass duration during aortic arch repair.

A pararenal stent graft uses a scalloped proximal seal to preserve lumbar artery blood flow during aneurysm repair.

A radiation sterilized, fiber-reinforced composite stent maintains mechanical integrity and sterility for urinogenital conduits.