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.