Stents TRIZ Cases

A holder assembly aligns and secures an expanded prosthetic heart valve for precise crimping with less manual adjustment and fewer errors.

A stent assist wire uses vascular landmarks to guide millimeter-accurate deployment and reduce mispositioning, flow impairment, and thrombosis risk.

A guiding passage linked to a spiral channel helps a degradable duct stent improve bile drainage and limit re-occlusion during degradation.

A self-expandable electrode stent uses sheath-guided deployment to capture cardiac signals and localize arrhythmogenic foci during mapping.

Shifted proximal and distal curved portions expand the vessel holder in multiple directions to increase baroreceptor stimulation and reduce blood pressure.

A monolithic distal tip joins the inner tubular member and guidewire lumen, while a gradual balloon transition reduces catheter kinking.

See how a delivery device applies UV-curable biocompatible adhesive between native valve leaflets to reduce regurgitation without permanent implants.

Using common carotid or subclavian access, the case shortens the valve delivery path and adds filters, occlusion, and shunts for embolic protection.

A radially expandable support frame engages native leaflets to stabilize the annulus and anchor prosthetic valves during insufficiency repair.

To address thrombosis and imaging interference from permanent metal, this braided polymer scaffold diverts blood flow and later absorbs.

Localized osmotic devices draw fluid from swollen brain tissue to reduce intracranial pressure while avoiding systemic osmolar side effects.

A twisted knit structure lets the stent compress for coaxial delivery while retaining radial strength and limiting foreshortening.

Surface meshes and helicoids shape wire paths into accurate braid models for complex stent surfaces, supporting procedural planning and regulatory measurement.

Independently expandable balloons deploy main- and side-branch stents while preserving side-branch access and reducing plaque shifting.

Independently expandable balloons deploy stents in both branches, improving alignment while reducing obstruction at bifurcations.

Parallel-axis struts and segmented flex and hoop cells compress self-expanding stents for delivery without losing radial support.

At the carotid bifurcation, a porous-wall stent diverts larger emboli to the ECA while filtered blood reaches the ICA.

Alternating mirror-image ring connectors offset cover-induced expansion constraints, delivering 0%–6% foreshortening and recoil of 6.7% or less.

A steerable retrieval device grasps and withdraws implants into a lumen while adapting to tortuous prostatic urethral anatomy.

A pivot arm and biasing member pinch the actuation member when force rises, limiting radial load on the native annulus during valve expansion.

Integrated coils trace valve-frame struts to sense pressure wirelessly, helping detect post-operative complications sooner outside clinical facilities.

Irregular vessel anatomy can impair sealing and cause migration; adjustable stent elements and retractable tines enable repositioning and resealing.

An hourglass valved shunt redistributes atrial blood with a small septal footprint, helping limit pannus occlusion and reverse shunting.

Peristaltic forces can migrate esophageal stents; radial supports transmit axial forces outward to improve anchoring and placement stability.

Nested catheter capsules enable controlled prosthetic valve deployment while independent catheter movement supports precise placement.

Sensor feedback and motorized actuation help position prosthetic heart valves through tortuous vasculature with less traumatic delivery.

A tensioned tie temporarily makes a non-circular stent more circular, supporting tissue ingrowth before vessel reshaping improves compliance.

Migration and poor seals in irregular vessels are addressed by a remotely adjustable lattice graft that can be reshaped after placement.

Paclitaxel-coated mesh expands against the prostatic urethral wall to deliver local therapy while allowing urine flow through the catheter.

A self-closing valve member uses resilient shape-memory elements to block false-lumen backflow after aortic dissection.

Pre-cut wire segments and aligned mandrel loading help control braiding angles across diameter changes while reducing excess material waste.

A porous polymer matrix enables tissue ingrowth while bio-adhesive coating anchors the implant before permanent integration.

Retrograde-flow conduits maintain coronary artery perfusion when valve leaflets press against the coronary ostia.

Multiple crimping and balloon-pressurization steps improve stent retention on the catheter and reduce detachment risk during deployment.

An expandable sheath and balloon constraint protect drug-coated implants from shear, snagging, and uneven deployment during delivery.

A steering assembly moves one shaft longitudinally while flexing another to improve prosthetic valve positioning during vascular delivery.

A movable support assembly transfers push force through an internal shoulder while allowing transverse movement to minimize catheter kinking.

Moveable sleeves and a catheter shaft enable stepwise heart valve stent release, reducing major surgery and improving positioning predictability.

A lubricious, flexible sheath and rotatable graft connector reduce retraction force and tissue trauma during arteriovenous implantation.

Placing an impeller-based pump in the renal vein drives downstream flow, improving renal perfusion while reducing venous pressure.

Curved Y-link portions improve stent-junction flexibility and fatigue performance while supporting delivery through tortuous vessels.

Sequential outer, intermediate, and inner shafts help deploy a mitral valve prosthesis through a trans-septal route despite limited left-ventricle space.

A constrained helical tubular balloon expands from low to high profile to create a lumen for medical devices past tortuous vessels and stenoses.

A flexible tubular valve uses released resilient members to close its distal end and block downstream backflow into a dissection false lumen.

An elastic wave-pattern implant adapts constriction pressure to body movement while scar tissue helps prevent migration.

Preloaded platforms deploy intraluminal devices sequentially, while post-deployment dilation improves expansion and vessel seating.

An inner lubricant layer reduces friction between balloon surfaces, easing compaction and withdrawal through elongate medical channels.

The slotted sheath and wedge-lock element compress radially to hold the pusher wire and implant steady until controlled deployment.

An elastic sealing element fills gaps around chimney stent grafts, limiting endoleakage while preserving vessel blood supply.

Forming the main and side bodies from one graft sheet reduces junction material, flow turbulence, and handling difficulty.