Stents TRIZ Cases

A catheter apparatus uses an adjustable photosensitizer-coated stent and optical fiber to activate treatment at the lesion site, reducing patient recovery time.

Segmented tubular side branch extends through fenestration to resolve insufficient internal arm length for renal stent graft sealing.

A MEM sensor attaches via sutures to a prosthetic heart valve, maintaining precise alignment during expansion.

A tubular woven fabric with controlled outer diameter variation prevents turbulent blood flow and thrombus formation in vascular prostheses.

Segmented guide catheters with spiral stent protection sections prevent tube stent crushing in severely bent vascular portions.

A branched graft method secures a first end in a branch vessel before moving the second end into a main conduit for stable positioning.

Biodegradable hybrid fibres with hydrogel casings reduce thrombosis risk while providing reliable sealing for complex vessel defects.

In situ forming polymer foams expand within aneurysms to conform to complex geometries, preventing endoleaks and stabilizing stent-grafts.

A stent delivery core assembly uses a dynamic gripping mechanism to secure and reposition the implant within the catheter.

A balloon expandable stent delivery system uses a spirally wound wire to constrain the balloon into a spiral shape during inflation.

An axial split in the crimping funnel allows easy removal from enlarged distal tips, preventing user error during precise valve positioning.

Serpentine cylindrical rings with alternating peaks and valleys provide enhanced longitudinal flexibility for navigating tortuous body lumens.

A collapsible sock valve on an esophageal stent directs flow through a heel portion while closing against reverse pressure.

Heat-setting and chemical crosslinking stabilize the fabric structure, preventing resiliency loss during prolonged compressed storage in sterile packaging.

Axial force application secures the prosthesis without radial compression, preventing leaflet damage and embolism during minimally invasive implantation.

Segmented stent design minimizes pancreatic duct irritation by lowering radial force at the soft distal tip.

A tubular arteriovenous shunt uses a pull wire loop to radially constrict the device and regulate blood flow.

UV light removes the inert protective coating to expose the biodegradable core, resolving mass loss control issues.

Evenly spaced pullwires and a pivoting connector prevent catheter displacement and deformation during sheath retraction.

Blood back-bleeding through a collapsed implant removes trapped air, reducing embolization risk while maintaining precise positioning via visual markers.

Keyed and snap features on a sheath hub prevent rotation and translation, resolving reliability and complexity trade-offs in LAA occluder delivery.

Sterically hindered urea groups enable vascular prostheses to exhibit superior biomechanical properties and biodegradability for safe long-term use.

Segmenting the nasal prong allows independent optimization of comfort and sealing, resolving trade-offs between patient compliance and pressure control.

A dumbbell-shaped stent graft with fenestrations accommodates branch vessels while maintaining structural integrity.

Multi-guidewire balloon catheter integrates three channels to guide, cut, and anchor wires, reducing vessel trauma from multiple insertions.

A three-dimensional precise intracavitary radiotherapy stent integrates radioactive particles to deliver targeted local irradiation.

A stent surface treated by femtosecond laser radiation and modified with hyaluronic acid to enhance biocompatibility.

Indwelling catheter extends guide wire through nose cone dilator to position side arm into internal iliac artery, overcoming blind vessel access constraints.

A flexible sheath combines a polymer coil and braid reinforcement to resist collapse and kinking while maintaining torqueability for stent deployment.

An attachment mechanism employs engagement features and a release wire to detach implants from shafts, resolving complexity trade-offs.

An expandable braided structure with embedded polymer minimizes crossing profile and prevents distal debris migration during thrombus removal.

Biodegradable linkages dissolve to gradually expand the device, preventing reperfusion injury from sudden blood flow restoration.

Internal chambers and thru-holes in liquid permeable graft material enable cell deposition, resolving complexity of combining components.

Pivotable connection branches with expandable seal stents anchor to branch vessels, reducing anastomosis time and cardiopulmonary bypass duration.

Catheter retrieves vena cava filters via eversion through the deployment path, eliminating jugular access and reducing vascular damage risks.

Segmenting the anchor stent and valve component reduces delivery profile diameter, enabling navigation through tortuous vessels while maintaining radial force.

Composite radiopaque markers link bioresorbable stent struts, resolving fluoroscopy visibility and mechanical strength trade-offs.

A stent delivery sheath uses a translucent reinforcing member to enable direct visualization of the stent during deployment.

Segmented inner members and dual seals maintain hydration for implantable devices, resolving complexity trade-offs via local quality differentiation.

A catheter with an expansible stop element engages the lumen wall, allowing snares to reposition a fully deployed prosthetic heart valve without resheathing.

A signal transducer generates directional ultrasound or electromagnetic waves to align a target device within an adjacent body cavity.

A tungsten rhenium clamping arrangement resists warping and melting during high temperature bonding of refractory metal alloys.

A fenestrated vascular prosthesis with an island graft minimizes blood flow cessation and surgical steps by allowing direct arterial branch reconnection.

Segmented vascular closure device uses a disintegrating retaining element to release self-expansion, reducing complications like haematoma.

Loosely arranged individual filaments within a stent graft fiber strand enable variable porosity and crimping properties for small intracranial vessels.

An activation circuit controls electroactive polymers to change catheter shape and stiffness dynamically.

A shape memory micropost array mechanically captures tissue through dynamic configuration changes.

A stent deployment system uses a retractable ring and lubricous elastic membrane to release the implant from proximal to distal ends.

An interatrial shunt employs a tortuous flow path and ePTFE coating to reduce paradoxical embolism risk while maintaining long-term patency.

Coiling proximal wire ends on a handle spool reduces procedural complexity and radiation exposure during side branch access.