Stents TRIZ Cases

A polymeric stent delivery system uses a tapered expandable member to crimp and release tubular implants onto an inner shaft.

A dynamically flexible spindle adjusts rigidity via spine wires to enhance navigation through complex vascular anatomy.

An electroactive polymer actuator radially expands to dilate strictures in a lumen.

A trans-aortic valve introducer system delivers a prosthetic heart valve through the aorta using a dedicated deployment element.

An expandable implantable device with a transverse occluding surface blocks blood flow within the false lumen of a dissected aorta.

A knitted wire support element retains a micro catheter within an aneurysm sac during filler delivery.

Unattached inner catheters reduce buckling and improve placement precision by minimizing frictional forces during sheath withdrawal.

An endorectal cooling balloon induces local hypothermia to minimize inflammatory tissue damage and accelerate functional recovery after radical prostatectomy.

Segmented compressible distal tube sections with elastic deformation ensure complete device deployment while reducing tissue trauma risk.

Integrated sensors monitor blood flow through prosthetic vascular grafts to detect intimal hyperplasia and prevent limb loss.

Automated tip shaping eliminates manual X-ray exposure while enabling remote insertion.

Microanchors use nitinol strain-relieving connectors to fix devices in the GI tract while preventing tissue damage.

Segmented stent cells optimize proximal wall support while maximizing distal daughter vessel access, reducing restenosis risk.

Segmenting the frame and protector prevents downstream embolization while maintaining vessel wall integrity.

Inner peripheral coating of 2-methoxyethyl acrylate polymer inhibits sludge deposition on bile duct stents, maintaining lumen patency.

A steerable delivery catheter positions a fistula device within the heart wall to redirect oxygenated blood flow.

Lubricious inserts reduce withdrawal force to minimize stretching and compression during stent deployment.

Layered fatty acid excipients with distinct melting points provide temporal drug release profiles that reduce restenosis by interrupting inflammatory cascades.

Separately deployable branch lumens with expandable flanges maintain blood flow while excluding aneurysms from non-perpendicular vessels.

A deployment device releases a protective mesh liner inside a vessel to shield the wall during percutaneous procedures.

A medical stent control region twists to form a barrier within the body lumen.

Segmenting catheter stiffness minimizes vascular trauma by bridging gaps between compacted devices and flexible tips.

Polycyclic polymer structures create nanoscale voids to increase storage capacity while maintaining precise diffusion control over drug release rates.

A braided support structure reconfigures during inflation to offset longitudinal tension, maintaining flexibility in curved vessels.

Segmented balloons orient eccentric stents at bifurcations, preventing arterial wall trauma and restenosis.

A low-profile stent graft system positions the stent and graft in non-overlapping collapsed states within a delivery catheter.

Distinct guide openings on a helical track compress the prosthesis, resolving large delivery profiles that complicate minimally invasive implantation.

Segmenting concave moulds into convex submoulds eliminates fibre accumulation gaps to produce uniform three-dimensional preforms for tissue engineering.

Segmented bifurcated stents restore blood flow through occluded vessels while maintaining structural integrity at branch points.

Curved surfaces convert axial displacement into radial disengagement, eliminating complex active control mechanisms while ensuring reliable device release.

An expandable hydrophilic material seals the distal opening upon contact with inflation liquid, preventing fluid leakage while enabling effective air removal.

A stent delivery system uses a second outer tube with higher surface roughness to prevent guide wire movement and maintain precise stent placement.

Layered electrospun fibers guide cell attachment and enable timed drug release, solving the lack of structural control in conventional nanofiber stents.

A stent deploys while rotating and swinging to reduce expansive force per unit length below 0.05 N/mm, lowering vascular wall damage risk.

Segmented stents prevent kinking in curved neurovascular paths while maintaining axial stiffness.

A bridge device applies controlled tension to stretch the esophagus over time using adjustable anchors and a ratchet mechanism.

A brim recapture funnel collapses over protruding valve brims to prevent anatomical damage during partial deployment retrieval.

Automated control system inflates the balloon during diastole to minimize vessel trauma and improve deployment accuracy.

Uniform wall thickness and opposite twists eliminate cone rigidity, improving navigability while maintaining bursting stability.

A prosthetic mitral valve system uses a segmented deployment frame to control catheter components for precise percutaneous implantation.

Segmented pusher band walls with varying thickness resolve friction versus strength contradictions for longer stents.

Release wires draw thread loops around the graft body to reduce diameter, simplifying assembly and preventing branch artery occlusion.

Segmented sheath design with thinner distal walls improves flexibility and trackability.

A cardiosphere-derived cell sheet delivers billions of stem cells via a balloon catheter to promote cardiac regeneration.

A deployment apparatus uses an elongate member with releasably engaged anchoring elements to secure a frameless valve within a vascular vessel.

Axial and radial deformation processing resolves the contradiction between thin strut arterial injury and radial strength in bioabsorbable polymer stents.

A caped stent uses a free-floating cover to divert blood flow in tortuous vessels.

Radial expansion of the pusher distal end releases stent loops, enabling retraction into the sheath for accurate repositioning.

Nested sub-prostheses within a main prosthesis eliminate complex vessel re-routing, reducing surgical complications during thoracoabdominal aortic repair.