Stents TRIZ Cases

An absorbent cylindrical device expands within the urethra to manage incontinence, eliminating bladder trigone irritation caused by balloon anchors.

A coaxial infusion catheter system deploys an expandable occluding element to trap emboli during thrombolytic agent delivery.

A tubular strut with a spiral channel delivers drugs while maintaining radial strength and flexibility.

Adhered wires pull the restraining sheath proximally, reducing friction and improving placement accuracy.

Open spiral channels on the stent exterior prevent migration and clogging, reducing the need for frequent extraction procedures.

A catheter with a hollow coring tip creates a clean hole in an inflated balloon wall for controlled deflation.

A data processing unit corrects X-ray projection data using marker shift amounts to generate accurate three-dimensional stent images.

Rotating compression elements radially compress medical devices to prevent damage during tedious manual loading.

A tubular support graft with a 3D hydrogel matrix surrounds a vascular graft to enhance cell survival and functionality.

An elastic membrane covers a recessed portion in the delivery device to prevent crimping or twisting of the therapeutic substance during insertion.

A radially compliant stent graft combines super-elastic Nitinol with non-elastic fluoropolymer to mimic healthy tissue compliance.

Alternating polymer layers in a bioabsorbable stent arrest crack propagation, resolving the trade-off between mechanical support and controlled degradation.

A balloon cannula system creates a working space in the spine to enable direct visualization and atraumatic dissection.

Two cooperating ring stents with different configurations constrain vessel over-dilation and ensure proper apposition within curved geometries.

Segmented implant sections self-align via intermediary connectors to resolve insertion ease versus positioning stability trade-offs.

A microcatheter-deployed filter transitions to a deployed configuration within the ophthalmic artery.

Circumferential rows of uncovered cells in a covered stent provide targeted flexibility, reducing migration risk while maintaining fistula sealing.

Alternating strut lengths in the shape memory member resolve flexibility and strength trade-offs while preventing shortening.

Segmented handle components convert rotational motion into linear displacement, enabling minimally invasive thrombus prevention without surgical risks.

Looped-back rings and non-invasive joints on braided wires prevent sharp end damage while maintaining structural stability.

Interweaving a pull wire into a reinforcement braid eliminates welding complexity in small diameter vascular delivery systems under 5 Fr.

A coronary sinus occlusion catheter system manages blood flow and cardioplegia delivery during cardiac surgery.

A collapsible prosthetic heart valve frame uses nitinol struts and tethers for controlled deployment.

Variable diameter sheath prevents polymeric stent dislodgment by expanding balloon ends beyond the scaffold to increase retention force.

Nested retrieval shafts and clasp members extract implanted devices via catheters, reducing invasiveness while managing system complexity.

Segmented stent films with discharge holes resolve the contradiction between preventing re-stenosis and allowing body fluid flow from branch lumens.

A synthetic composite laminate implantable medical device replicates the hierarchical collagen fiber arrangement and pore structure of acellular dermal matrix.

A magnetic stent system self-expands to join blood vessels without suturing.

Segmented connector structures with transverse and axial elements prevent kinking in tortuous vessels while resisting axial displacement.

A PLLA-PCL shape memory copolymer scaffold expands at body temperature to maintain radial strength.

Boron nitride nanotubes reinforce woven stent graft covers, preventing rupture while maintaining MRI compatibility.

A microcatheter with a longitudinally stretched PTFE liner reduces delivery friction through modified surface properties.

A stent graft introducer constrains the proximal stent at multiple points to maintain perpendicular orientation against the vessel wall.

A hybrid stent uses shape memory alloy wire to balance flexibility and radial stiffness for secure vessel anchoring.

Extracellular matrix coating within microporous voids anchors the stent via adhesion while bioabsorbable degradation enables trauma-free removal.

A prosthetic heart valve stent incorporates annular sealing members and radial anchor hooks to secure the device within the native annulus.

Matched cutting portions and a coupling tube join woven stent wires, preventing blood penetration through gaps.

Hydraulic actuation via a piston balloon replaces manual pulling to overcome static friction and stent embedding, reducing deployment force and migration risk.

A balloon access device couples to an endoscope and inflates to create a seal with the cap.

Segmented handles and nested catheters resolve the contradiction between repairing damaged vasculature and avoiding branch vessel occlusion.

Intravascular ultrasound imaging guides needle placement for stable shunts, preventing displacement and cardiac failure risks.

Electromagnetic tracking sensors detect position indicating elements within an endovascular prosthesis to enable precise image-guided placement.

Suture loops restrain stent graft diameter to enable partial deployment and precise repositioning in the ascending aorta.

Trained NLP models extract coronary lesion data from unstructured medical text.

A woven textile sleeve with thermoplastic warp threads reinforces a medical dilation balloon to achieve high structural integrity.

Segmented grooves in a syringe holder prevent scattering during transport and reduce contact area to improve sterilization gas flow.

Heating a porous polymeric coating collapses its structure to encapsulate drugs, resolving contradictions between release rate control and agent stability.

An infusion catheter uses an inflatable obturating balloon to isolate obstructions and deliver temperature-controlled liquid through distal orifices.

Multiple guide wire ports maintain access during bifurcation stenting, reducing turbulence and restenosis risk.