Stents TRIZ Cases

A bile duct insertion tool pulls the papilla to guide a second device through narrow anatomical structures.

A stent radiopaque marker uses a complete solid solution alloy to match the corrosion potential of the metallic stent body.

A guide with a flexible part reversibly deforms to follow urethral curves under minimal force.

Automated guide wire advancement uses fluoroscopic X-ray markers to track tip position, preventing overshoot during rapid insertion into coronary arteries.

Triple balloon catheter conforms to uneven cardiac tissue to create large, contiguous cryogenic lesions without precise alignment.

Medical device coatings release therapeutic agents at different rates using varied particle sizes to mitigate restenosis at stent edges.

A funnel portion compresses a heart valve prosthesis within its chamber to enable retrieval.

Tapered regions on the chuck nut distribute contact force to prevent excessive collet bending and ensure reliable stent fixation during deployment.

A balancing element distributes tension across elongate members to compress a stented prosthesis evenly.

Rotatable collar and control knob system actuates medical device implants through catheter-based delivery mechanisms.

A prosthetic valve employs a rigid chord along the tubular support to prevent axial displacement caused by blood flow during endoluminal deployment.

Segmenting the pushable coil from the expandable braid resolves positioning difficulties and migration risks in large aneurysm treatment.

Asymmetric proximal and distal apices allow low-profile introduction while maintaining radial force for secure aortic arch sealing.

Nested concentric catheters with a button linkage mechanism enable rapid retraction of the delivery system, reducing procedural duration and hospital stay.

Curvilinear longitudinal connectors join distinct stent cylinders to prevent vessel injury and thrombosis during complex bifurcation implantation procedures.

Inverted Y stent graft enables ipsilateral internal iliac artery cannulation via curved arm design.

Segmented proximal retention members enable precise length adjustment to match patient anatomy, reducing tissue irritation and inventory requirements.

A braided stent incorporates an integral retrieval loop formed from interlooped wires to enable direct grasping and pulling.

A coronary sinus occlusion catheter redistributes blood flow to ischemic myocardium using intermittent pressure-controlled vessel closure.

Flexible stent cells and struts distribute radial force, reducing leaflet stress by 80% while preventing perivalvular leakage.

Post-molding cross-linking boosts elastic modulus and structural stability in vascular stents while eliminating complex synthesis equipment requirements.

A pulling suture system pulls a braided stent into a tubular structure, preventing radial expansion and tissue damage during loading.

A heat-shrinkable confining sleeve prevents sheath deformation during storage, enabling delivery of self-expanding implants to smaller anatomical locations.

Side-chain crystallizable polymers incorporate heavy atoms to achieve inherent radiopacity for medical device fabrication.

Laminated outer sheaths embed pull members with varying radial profiles to reduce deployment friction and prevent sticking during retraction.

Balloon catheter captures stents through conical socket compression to resolve harmful tissue interactions during retrieval.

Fiber constraints on the central body allow longitudinal elongation without radial expansion, preventing vessel wall damage in curved sections.

Passive vortex generators manipulate fluid flow to reduce shear stress on blood-contacting surfaces.

An intraluminal balloon applies circumferential pressure to deploy a chitosan bandage, controlling esophageal hemorrhage without perforation risk.

A catheter-based heart support system uses a self-expanding stent to anchor beneath the aortic valve.

Segmented seal levels and fenestrated diaphragms maintain renal perfusion while achieving proximal fixation in complex aneurysm repairs.

A biliary stent uses dual retaining members extending from a common axis to secure positioning within the duct.

Releasable steering members align a prosthetic branch to either common iliac artery, replacing mirror-image designs and reducing inventory complexity.

An internal flared cuff secures branched iliac grafts to aortic bifurcations despite limited distal space.

Merging multiple restraint functions into one wire reduces system complexity and profile while minimizing force required for release.

Nested steerable catheters with independent flex components provide precise positioning in confined left atrial spaces.

Zigzag laminated areas prevent kinking in small diameter vessels while porous biodegradable layers promote endogenous tissue restoration.

Implantable electrodes measure vascular impedance to calculate blood pressure, replacing invasive sensors and enabling continuous therapy adjustment.

Compliant channels in implantable stent grafts enable selective fluid flow while flexible membranes inhibit tissue ingrowth through branch anastomoses.

A segmented delivery shaft shifts from flexible navigation to rigid distal positioning, resolving the trade-off between steerability and valve alignment.

Segmented stent tubes maintain agent contact with colon walls, limiting lesion spread and promoting healing.

Preliminary folding of the balloon before welding eliminates bulky transition regions and air pockets while ensuring reliable pressure retention.

Segmented stents use electropolished reduced wire profiles at the ends to prevent tissue perforation during peristalsis.

A neuroprotective stent shields spinal nerves from compression forces using a flexible tubular structure.

Axially staggered slits in a laser-cut stent create offset cusps that prevent head-to-head impact during severe bending, reducing buckling risks.

Universal catheter platforms accept uniquely shaped tips selected by physicians, eliminating multiple delivery systems and reducing costs.

Flared support rods and connecting strips in the sheath expand to distribute retraction forces, preventing sticking and structural damage to the device.

A delivery device with a guidewire and sheath positions ocular implants in the supraciliary space, preventing anterior chamber damage.

A rotatable handle converts rotational movement into longitudinal motion to release trigger wires.

Clamping membrane ends between coaxial stent frames eliminates suturing, reducing manufacturing time while preventing thrombosis from internal protrusions.