Stents TRIZ Cases

Controlled aneurysm compression with sensor-guided adjustment helps prevent bursting while avoiding embolism and invasive stent procedures.

A telescoping shaft and locking assembly lets one stent delivery device fit different endoscope channels while preserving insertion and placement.

A porous foam and resilient film stent keeps the frontal sinus open while delivering active agents to reduce restenosis and infection.

A compliant shape memory foam implant fills and depressurizes the aortic false lumen to stabilize the vessel and promote healing.

A rhenium-chromium alloy helps medical implants reach smaller crimp diameters while reducing recoil and metal ion release.

A plate-based locking assembly lets a prosthetic heart valve expand by catheter, lock at the target diameter, and resist undesired recompression.

Observation-image analysis selects and positions a stent automatically, reducing manual targeting steps and improving placement accuracy.

Alternating soft and stiff polymer segments give a catheter shaft uniform bending stiffness while preserving push and torque strength in tortuous vessels.

Outward protruding anchoring features help venous stents stay positioned in large, varying lumens without sacrificing flexibility or radial force.

A semi-constrained stent uses constraining members to improve branch vessel alignment, simplify fenestration, and reduce vascular injury risk.

A single-layer braid with fine and coarse filaments improves plaque coverage while maintaining accurate stent placement and reducing fragment flow.

A shaped jig, elastic members, and heat-press molding help PTFE sheets bond uniformly on complex stents without gaps or peeling.

An expandable scaffold combines electrodes and debridement elements to ablate diseased duodenal mucosa and remove tissue while limiting submucosal damage.

A convex shoulder and body nosecone balances push strength and flexibility to protect prosthetic devices in tortuous vascular delivery.

Expandable electrodes anchor in the heart to map bipolar electrical signals and pinpoint arrhythmogenic foci for more effective ablation.

A bowing sidewall creates an annular perfusion lumen in large vessels, preserving blood flow while maintaining radial force during expansion.

Alternating open and closed stent cells absorb filament length to self-adjust during deployment and prevent C-fold lumen blockage.

Using a rhenium-chromium alloy helps medical implants reach smaller crimp diameters with less recoil and lower metal ion release.

Angled projections and a threaded coupler let the nose cone attach after crimping, simplifying implant delivery system assembly.

An expandable docking frame and angled valve seat let smaller prosthetic heart valves anchor in larger annuli while sealing to limit regurgitation.

Segmented collapsible scaffold sections let a catheter blood pump deliver high flow through small access while reducing aortic valve stress.

A single side portal and grooved adaptor let multiple branch endoprostheses share one channel, easing cannulation and guidewire handling.

Expandable anchor points secure vessel ends without suturing, cutting anastomosis time and reducing anesthesia exposure in vascular surgery.

Anisotropic friction and magnetic rotation propel and anchor a vascular tube through tortuous distal vessels for precise therapeutic delivery.

A catheter-delivered neck cover with an inner anchor blocks aneurysm inflow without coil packing, reducing procedure time and recurrence risk.

A balloon-mounted stent with a stabilizing wire enables single-procedure deployment and retrieval of protruding features while saving delivery space.

A heat-set Nitinol braid funnel guides tilted IVC filters into secure capture, simplifying retrieval with a steerable catheter.

Strong-base treatment and cross-linking turn fragile umbilical cord wall tissue into shapeable implants with higher strength and low rejection risk.

A nested outer-inner heart valve design enables secure anchoring and repeat catheter replacement of worn valve modules without open-heart surgery.

Pressure relief channels let blood bypass a partially expanded stent-graft, improving placement accuracy and preserving downstream flow.

Through-hole size, occupancy, and edge density are tuned to seal aneurysm openings while preserving branch vessel blood flow.

A threaded constraint keeps the flexible sleeve collapsed for controlled stent deployment, reducing kinking and improving lumen positioning.

A self-expanding transcatheter monocusp valve uses anchors and vortex-based leaflet function to prevent venous reflux with less invasive placement.

A flared stent leaves anchoring regions uncovered to promote tissue ingrowth, reducing GI tract migration while keeping the medial section easier to remove.

A tether that reverses direction positions the valve within an anchor stent, improving transcatheter placement and reducing PVL and mismatch.

A dual gripper stabilizes the mitral valve leaflet during chordae anchor deployment, reducing procedural risk and avoiding open-heart repair.

A self-expanding intrascleral mesh tube deforms the sclera to seal retinal tears, lower intraocular pressure, and reduce surgical complexity.

A movable sleeve adjusts implant length to match prostate size, improving BPH placement accuracy and reducing incontinence risk.

A multipurpose handle combines longitudinal actuation, rotation, locking, and sealing so a medical snare can be controlled with one hand.

A catheter-delivered branch stent graft creates large-bore central vascular anastomoses through an inside-out approach that reduces tissue trauma.

A collapsible prosthetic mitral valve uses ventricular protrusions and an atrial flange to secure catheter implantation while reducing surgical trauma.

Alternating CW and CCW wire crossings counteract helical bias in hybrid braided medical devices, preventing rotation during delivery.

Pre-positioning a compressed stent and folded sheath upstream avoids passing instruments through a fresh anastomosis, cutting risk and operating time.

A PTFE-silicone expansion structure helps covered stents resist slippage, restore shape, and avoid film dissolution in body fluids.

A gear-driven handle and steering assembly improve prosthetic heart valve positioning while easing transfemoral delivery through smaller vessels.

Reversible lumen occlusion modulates vessel blood flow to lower right atrial pressure, support kidney function, and limit fluid overload.

A radially expandable ring enables catheter-based valve annulus reshaping, fitting different anatomies while avoiding open heart surgery.

Self-flaring expandable rings simplify endovascular fistula or anastomosis deployment while improving anchoring and reducing detachment risk.

Shock-wave lithotripsy and a second treatment balloon are combined to open calcified lesions and deliver therapy with less vessel injury.

A catheter-delivered growth stent valve expands from neonatal to adult vessel sizes while maintaining radial strength and unobstructed flow.

Support member reinforces intermediate shaft to prevent kinking during sheath retraction, ensuring precise stent placement.

A stent junction pipe secures wire parts via a locking part, preventing separation under tensile force during deployment.

A low pH chemical polishing composition removes material from medical device surfaces using inorganic acids and oxidizing agents.

Offset wavy warp yarns constrain weft fibers in artificial blood vessels, preventing cut-end fraying and blood leakage.

Removing the outer sheath eliminates friction while constraining members maintain compression, enabling precise repositioning and accurate placement.

Wider petal turns initiate radial expansion at bifurcations, resolving fluid communication difficulties in prior stents.

A resonator device uses a dielectric layer to form a capacitor structure that amplifies the RF magnetic field around an implant.

A prosthesis using shape memory material expands from a compressed state to secure vessel portions.

Wave-shaped rings in an absorbable stent matrix maintain radial strength while shortening the corrosion cycle.

A transurethral delivery member positions a biocompatible treatment membrane to promote epithelial function at the stricture site.

Segmented vascular device anchors in adjacent passages to create a fluid bypass, treating severe occlusions without open-heart surgery trauma.

A medical device deployment handle uses a torsion mechanism to rotate an inner cannula for quick stent graft release.

Diamond and flex cell modules adjust connector orientations to minimize longitudinal contraction while maintaining constant length.

A catheter operating handle uses a cam mechanism to transform rotational input into axial sliding motion for controlled stent deployment.

Botulinum toxin injection paralyzes local peristalsis, securing the GARD against migration and preventing tissue ulceration.

An expandable introducer sheath shifts between compressed and expanded configurations to accommodate medical devices.

A catheter operating structure converts rotational input into linear advancement using a spiral shaft and movable member.

A medical device shaft liner enables percutaneous delivery of implantable devices, reducing invasiveness while maintaining strength and flexibility.

A biodegradable magnesium alloy vascular scaffold coated with a polymer layer to control degradation kinetics and maintain mechanical integrity.

Segmented drug cavities prevent Paclitaxel dispersion in healthy vessels during transit.

A retrieval device applies direct current to attract negatively charged clot components via electrostatic forces.

An undulating template device reshapes the heart valve annulus using radial forces to stabilize tissue segments.

Pivotable arms and a translating member compress the valve while ribs separate struts to prevent entanglement during loading.

Segmented lumens and passive valves reduce shunt failure rates by mimicking arachnoid granulations.

Dynamic compliance adjusts chamber stiffness above 100 mmHg, treating hypertension without medication side effects.

Positioning raised struts downstream of the aneurysm neck reverses harmful flow dynamics, collapsing the bubble.

Directional solidification forms single crystal microstructures in bioabsorbable stents to control degradation rates.

Segmented strut arms distribute transverse forces to prevent infolding while maintaining structural integrity.

Power law width distribution stabilizes strain to extend fatigue life while minimizing tissue prolapse.

A valve annulus implant uses a removable actuator to adjust the frame profile.

Selective polymeric coating covers stent struts to reduce tissue irritation while maintaining lumen patency through open inter-strut spaces.

Nested protectors simplify loading by transitioning from a protective state to a squeezing action, reducing device complexity.

Anatomically conformal self-expanding mesh anchors securely to minimize perivalvular leaks.

Dynamic compliance restoration body portion accommodates systolic pressure changes, reducing cardiovascular stress and maintaining structural integrity.

A retractable catheter embeds a tapered pull element end portion within the flexible sheath to increase friction and force transmission.

A suture delivery device integrates dilation and closure functions to manage vessel access sites efficiently.

Offset tie members on the engagement member enable radial stent collapse, eliminating axial pulling forces that tear vascular walls.

Flexible shells and thin films protect vessel walls from injury while maintaining deployment efficiency.

Nested dual-balloon catheter reduces profile, enhancing flexibility and consistent inflation in tortuous vessels.

A radiopaque guidewire tip changes shape during thrombectomy to signal extension completion via fluoroscopic imaging.

Segmented delivery system with insulating outer sheath minimizes patient trauma while enabling precise tissue cutting for accurate valve positioning.

An expandable tubular stent frame uses an unbonded intermediate liner region to enhance flexibility.

Allyl-functionalized shape memory polymers crosslink via pendant groups to lower melting temperatures below physiological levels.

An implantable device uses a wireless antenna to form an electrolytic cell that degrades a sacrificial anode region.

Localizing drug application to main strut surfaces avoids stress concentration at bending portions, maintaining coating integrity.

A drug eluting prosthesis testing apparatus uses a movable shaft to apply tensile or compressive forces during fluid flow.

Graduated porosity in a multi-layer filter captures emboli without restricting blood flow through renal arteries.

Implanted thoracic duct cannula drains lymphatic fluid, reducing interstitial overload without compromising renal function.