Stents TRIZ Cases

A take-up pulley winds a drive belt to retract a stent sheath at variable speeds, reducing manual force adjustments and procedural time.

A coaxial RF antenna integrated within an angioplasty balloon catheter delivers dielectric heating to the vessel wall.

A stent-graft with a perfusion window enables precise in situ fenestration of branch vessels.

Radial legs on the guidewire tubular member prevent accordion-like collapse, enabling rapid deflation and maintaining a reduced diameter in the deflated state.

A control tether adjusts stent graft diameter to prevent landing zone misalignment in high-flow vessels.

Segmented application routes prevent web formation between linear struts, reducing medicinal solution wastage.

A hydraulic catheter actuator reduces sheath retraction force by segmenting the outer tube, preventing binding in tortuous luminal systems.

Segmented sheath portions prevent device shifting and vascular trauma during minimally invasive valve placement.

A braiding mechanism uses discrete filament stepping to interweave fine wires without creating large tension spikes.

Segmented filter and occlusion balloon resolve crossing profile versus embolic protection trade-off while ensuring vessel wall apposition.

A multiple stent delivery system deploys two stents through a single catheter using retractable outer sheaths.

Resiliently biased catheter grip enables indirect shaft engagement through compressible gripping surfaces.

A surgical stapler lockout mechanism prevents firing member movement until a compatible staple cartridge is detected and verified.

A rotatable outer sheath couples to a stent via rotational motion, enabling controlled positioning during delivery.

Braided vascular device incorporates enlarged central apertures to preserve perforator blood flow while restricting aneurysm inflow, resolving ischemia risks.

An implantable stent integrates electrically independent pressure sensors at both ends to measure duct and duodenal pressures.

Bioabsorbable vascular implants use elastomeric tensioners to counteract material relaxation and prevent device migration over time.

A torus-shaped balloon anchors a gastric feeding catheter through pneumatic expansion against the stomach wall.

A pulmonary valve intervention device restricts right ventricle outflow to manage diastolic heart failure.

Dip-coated polymeric stents incorporate shape memory alloy wires to enhance radial strength and ductility for reliable vessel deployment.

A valve loader transfers medical devices from a storage cartridge into a deployment catheter using alignment inserts and locking mechanisms.

Inner and outer membranes fold inward and clamp under flexible tongues, resolving insufficient radial force and ensuring reliable anchoring.

Segmented stents in a bow-tie vascular remodeling device prevent coil dislodging at challenging neck ratios while maintaining efferent perfusion.

Nested insertion of a segmented mesh tube reduces surgical complexity while sealing retinal tears.

Segmented vascular components enable on-site physician assembly, reducing inventory costs while ensuring immediate device availability.

Concentric stents use opposing recoil forces to clamp the graft, eliminating sutures and preventing leaks in branched vessels.

A vibrating membrane pump delivers blood through a coaxial cannula design.

A screw gear and drive assembly retract a stent graft cover through controlled rotation and sliding motion.

A thermomechanical cycling process stabilizes the two-way shape memory effect in Ni-Ti alloys through R-phase transformations.

A catheter distal end features a knife-edge circular front to perforate hard clot areas within blood vessels.

Stent with side aperture and markers supports main vessel while maintaining flow to secondary branches.

Sodium bicarbonate powder applied to a stent-graft sheath reduces sliding friction from 1.2 to 0.25, resolving adhesiveness issues during compressed loading.

A bifurcated stent graft uses a single-layer woven seam extension to reinforce tapered branches.

A clamping device guides sub-millimeter cylindrical workpieces into a laser cutting zone for precise segment separation.

A collapsible vascular filter uses shape memory alloy to expand within a vessel for secure anchoring.

An attachment assembly with moving arm pairs secures cardiac valves during minimally invasive mitral valve procedures.

Wire components link the connector to the cap bottom, reducing operating effort to remove the cover while preventing stent migration.

Controlled water exposure accelerates hydrolysis in bioresorbable scaffolds, predicting radial strength and recoil without real-time delays.

Segmented fenestrated duodenal stents combine covered fistula occlusion with uncovered windows that allow bile and pancreatic fluid flow back to the stomach.

Segmented tubular sheaths prevent premature drug release during placement by splitting and peeling back to expose the expandable medical device.

A medical device system delivers replacement heart valves through a catheter using a direct connect flush mechanism.

Elongated members deploy an expandable prosthesis via splittable sheaths, eliminating sutures and reducing necrosis risk during emergency vessel repair.

A medical device coating layer utilizes two distinct physical forms of a biologically active material within polymer matrices to achieve controlled release profiles.

A balloon catheter expands within the joint space to maintain distraction during arthroscopic procedures.

Segmented balloons with distinct bulge sections minimize axial foreshortening to ensure precise prosthetic heart valve placement.

An expanding balloon separates the submucosal layer from surrounding tissue, allowing a high-frequency scalpel to incise without generating heat damage.

A blood vessel sizing device uses radiopaque concentric circles to provide accurate dimensional references on medical images.

Alternating spline tube thickness creates fluid channels that resolve axial compression issues during prosthetic heart valve resheathing.

MEMS sensors on a collapsible stent measure native annulus dimensions and calcification levels, preventing valve migration caused by anatomical variations.