Stents TRIZ Cases

A single-piece medical device delivery catheter eliminates joint separation risk by maintaining uniform tensile strength across all longitudinal segments.

A self-expanding stent-like support structure anchors a biological heart valve for percutaneous tricuspid replacement.

A stent with a movable weighted object dislodges biofilm and sludge accumulation, extending residence time.

Segmented catheter with separable distal portion enables accurate secondary vessel stent placement while minimizing vessel trauma and procedural time.

Image processing circuitry extracts reference frames to generate emphasized images by tracing pixel values in reverse chronological order.

An expandable catheter skirt isolates contrast media from surrounding tissue, reducing nephropathy risk while improving ostial stent placement accuracy.

Magnetic flanges and an inflatable balloon compress esophageal strictures, reducing migration risk and preventing scar tissue recurrence.

Cutting edges on the angioplasty balloon treat hardened lesions while shaft openings control fluid flow to minimize tissue trauma.

Automated image processing detects longitudinally deformed portions based on strut density, ensuring accurate deployment verification.

Transitional stitching with a routed string adjusts stent graft diameter through controlled tension thresholds, preventing misplacement from diameter jumps.

A stent coating device uses a spray mandrel and air nozzle to deflect the spray jet radially outwardly for precise luminal application.

A stented tubular connector with expandable flanges anchors to the vessel wall to provide immediate hemodialysis access.

Helical stent struts induce spiral blood flow, reducing neointimal hyperplasia progression and maintaining fistula patency.

Temperature-responsive expandable structure prevents sinus ostia scarring and synechiae formation while maintaining drainage pathway patency.

Tensioned elastic stents adjust vessel alignment to prevent migration under high blood flow pressure.

An electromagnetic flow sensor integrated into a stent structure measures blood velocity via induced potential differences.

A pushable vaso-occlusive device uses a flexible transition section to connect the braid to the pusher for precise delivery.

Pre-cannulated fenestrations enable precise side branch deployment in complex vascular anatomies, reducing procedural risks.

A melt bond joint fuses an inner compression member to a guide channel, creating a reliable connection for medical delivery systems.

Segmenting guide wires into a medusa group resolves the contradiction between device complexity and low access success rates in vascular interventions.

A capture tube mechanism retains a stent on a core wire to enable controlled advancement and retraction during vascular delivery.

Nested self-expanding stent with a breakable mandrel tip expands within vascular grafts to secure bionic organs against 180 mmHg pressure.

A crystalline magnesium matrix reinforced with amorphous fibers enhances mechanical strength and elasticity.

Asymmetric catheter lumens prevent stent rotation, ensuring accurate fenestration alignment in tortuous anatomy.

A medical handle component integrates a self-contained mechanism to deliver pressurized material into enclosed cavities.

A stent delivery cover transitions between positions to decouple from the device during expansion.

Variable diameter trigger wires provide localized bending strength to retain self-expanding medical devices during delivery.

A self-expanding tubular mesh implant adapts to vessel diameter for precise placement.

A venous valve prosthesis uses a moving ball to prevent backflow and self-clean the implant.

Polylactide coatings on magnesium stents generate acid to neutralize alkaline byproducts, preventing rapid corrosion and maintaining mechanical strength.

Helical anchoring prevents urethral damage during insertion, accommodating various prostate sizes.

Helical tip penetration and one-way valve control enable physiologic drainage into venous sinuses, reducing infection risk from open surgery.

Segmented design anchors prosthesis via septum to prevent circulatory collapse during percutaneous deployment.

Directional barbs and flared distal ends secure prosthetic valves, preventing migration and paravalvular leakage during minimally invasive delivery.

Composite cobalt-chromium alloys embed platinum or tungsten to resolve the trade-off between fluoroscopic visibility and mechanical strength.

A variable iris crimper uses protective strips as an intermediary layer to reduce stent diameter without damaging drug coatings or causing cross-contamination.

A segmented vascular prosthesis treats ascending, arch, and descending aorta sections in one implant.

An oscillating crimping head reduces static friction, enabling safe insertion of compressed stents without damage.

Out-of-plane mechanisms provide mechanical advantage to crimp larger devices while maintaining portability and access.

Protective shields separate the mandrel from coated metal sheets, preventing surface damage while ensuring uniform therapeutic coating application.

A catheter handle locking mechanism controls axial translation and rotation of a tubular component to navigate tortuous anatomy.

A constraining mechanism uses a single release wire and wire receivers to radially constrain implant segments during delivery.

A tubular clot capture element radially contracts upon retraction to exert inward compression on the target thrombus.

Helical contractile bands mimic natural twisting motion to resolve low pumping efficiency and increased strain in existing cardiac assist devices.

Varying width connecting sections distribute stress during expansion, preventing distortion and enabling precise repositioning of the implant.

An extension sheath bridges the aortic bifurcation to eliminate contralateral wire snaring during internal iliac artery stent graft deployment.

Magnetizable prostatic elements repel to dilate the constricted urethra, avoiding encrustation and infection from permanent implants.