Stents TRIZ Cases

An introducer system aligns openings in a movable sheath and pusher catheter to enable wire access.

Modified ring and link structures reduce strain energy buildup, preventing end ring flaring while maintaining marker security.

Segmented suture loops replace outer sheaths to lower deployment force and improve placement accuracy.

Two prosthetic mitral valve components trap native leaflets to secure the device against high ventricular pressures during systole.

Cantilever attachment mechanism eliminates suture labor while maintaining guidewire access during stent deployment.

Segmented vascular stent with membrane-covered and exposed wire segments aligns with the aortic arch, reducing secondary splits during deployment.

A dissecting sheath cuts fibrotic tissue around embedded struts to enable safe retrieval without perforation.

Scaffold with flexible outer layers and internal pockets transitions to rigid state under vacuum suction for adjustable structural support.

An insertion system uses an optical reference mark to visually track the axial position of a self-expanding stent during deployment.

Segmented radiopaque markers embedded in stent framework openings enhance medical imaging visibility without increasing crimped diameter.

A magnetized stent attracts magnetic cells to an aneurysm orifice to promote tissue growth and seal the defect.

Segmented hypotubes with polymeric liners balance strength and flexibility for precise medical device maneuverability.

A stent with a slide and lock mechanism adapts to vasodynamic movements.

Rotating discharge sections deposit curable liquid in a mesh pattern to maintain body lumen dilation after device removal.

A laparoscopic vascular conduit arrangement uses a self-expanding stent to maintain vessel patency during deployment.

Heat treatment stabilizes braided stents during coating to prevent webbing and delamination, ensuring reliable anti-thrombogenic performance.

Localizing magnetically heatable fillers in the sheath layer of a polymeric filament overcomes the trade-off between heating effectiveness and tensile strength.

A catheter system uses a sorbent chamber to filter contrast agents from blood.

Segmenting the delivery sheath reduces friction between the constraining member and the device, preventing damage to bioactive deposits during deployment.

Asymmetric double-walled flanges engage tissue layers to prevent migration while minimizing trauma and maintaining fluid communication.

A pivoting lug within a stent attachment mechanism engages the device during delivery and rotates to disengage upon sheath retraction.

A balloon covering compresses the proximal region to inflate the distal end first, creating a tapered shape at lower pressures.

A vascular closure device uses a radially compressible frame with tissue grasping elements to anchor into vessel walls.

Expandable support structure accommodates anatomical variations, ensuring reliable electrical stimulation across the cochlea.

Nested catheter delivery enables precise placement of memory alloy stents in distal airways, resolving maneuverability limits beyond main bronchi.

Varying contrast marker rigidity prevents kinking between the marker and stent, ensuring accurate X-ray visibility during insertion.

A prosthetic endograft uses a frustoconical proximal surface and branch passageways to align with aortic arch vessels.

Balloon catheter with integrated pressure sensors adjusts coronary sinus occlusion to resolve trade-offs between flow control precision and device complexity.

A captivated slider lines the percutaneous hole on an elongate medical device shaft to reduce blood leakage and tissue trauma.

A slicing engine segments virtual 3D models into printable layers with precise connection points for user assembly.

Polyester-amide block copolymers resolve the contradiction between arterial compliance and tensile strength in angioplasty balloons.

Merging three ducts into one connector eliminates connection errors and simplifies setup for endoscopic balloon guidance.

A low-profile stent graft uses a suture thread with an elastic modulus of 40 cN/dtex or less to join the tubular graft and stent.

Inflating the delivery balloon during crimping increases scaffold retention force and ensures uniform expansion, preventing structural failure.

Motor-driven sheath advancement replaces manual manipulation, resolving insufficient deployment precision and incomplete stent expansion in bodily passages.

Double-lumen catheters adjust shape-memory bifurcation stents to resolve positioning errors in arterial branches.

Thermosensitive polymer gels inside catheter balloons eliminate lumen trauma caused by high-pressure mechanical inflation.

Nested cold cathode lamp inside translucent mandrel eliminates shadows to improve imaging precision without increasing device complexity.

Periodic balloon inflation mechanically breaks down fibrin sheaths, preventing occlusion and sustaining flow rates during extended indwelling periods.

Nested inner and outer skirt sections form a radial receiving space that positions the prosthetic valve without piercing the valve annulus.

Motor-assisted rotation of the catheter during crimping eliminates shear stress, preserving drug-polymer coating integrity and release performance.

Integrating a radiopaque second layer into the balloon wall eliminates viscous contrast media, reducing inflation time and biocompatibility risks.

Corrugated inner layers in stent grafts resist kinking under physiological pressure while enabling tight compaction for minimally invasive delivery.

Spring-loaded flexible array shields needle during insertion, preventing ventricle tissue trauma while enabling safe intra-myocardial injections.

A flexible intravascular delivery device uses a friction-based locking unit to secure medical implants for controlled release.

A prosthesis delivery device uses a rotatable inner cannula to release the proximal end of a stent during implantation.

Segmenting the stent into rigid main cells and flexible open cells resolves the trade-off between structural strength and navigability in tortuous vessels.

A hybrid stent system uses a biodegradable framework attached to non-biodegradable struts for intraluminal placement.

A gelatin-coated nonwoven fleece reduces permeability below 0.2 ml/min*cm2, preventing blood leakage and thrombosis in vascular prostheses.

Lead screw mechanisms translate rotational actuation into axial movement, enabling precise stent length control to treat complex vascular lesions.