Heart Valves TRIZ Cases

Replacing suturing with a mechanical interlock of pins and openings reduces surgical time while preventing blood leakage.

Split and merged strips create a flexible cage that enables catheter navigation while maintaining fixation reliability.

Dynamic cone-shaped membrane resolves the contradiction between aortic regurgitation protection and coronary flow by adapting to cardiac cycle phases.

Wire loops on the distal disc ensure smooth endothelialization, reducing emboli risk while maintaining calibrated opening stability.

Transcatheter clips with ventricular and atrial jaws attach artificial chords to reduce mortality risks in elderly patients unsuitable for open surgery.

Asymmetric frame anchors avoid AV node contact while radial cords prevent deformation under high forces.

Tubular frame expansion with commissure strips anchors collapsible leaflets, reducing wear and enabling minimally invasive delivery.

Liquid nitrogen freezing rigidifies animal tissue membranes, enabling precise thickness reduction without deforming elastic fibers or reducing yield.

Alcohol dehydration and enzymatic treatment remove residual glutaraldehyde toxicity to prevent bioprosthetic heart valve calcification.

Segmented hollow cylinders linked by cruciform connector elements transmit torque while minimizing friction in tortuous anatomy.

A multi-branch catheter system positions distal branches against aortic valve leaflets to enable precise coaxial imaging and instrument alignment.

A transcatheter prosthetic valve system uses a deployable resilient clamping segment to secure anchoring within the heart.

A valved conduit design uses sinuses and rolled leaflet attachment edges to simplify manufacturing.

A cardiac valve delivery device uses a tether system to control the radial expansion and precise placement of distal and proximal anchors.

A color-coded bioprosthetic valve system uses matching adapter and handle colors to simplify component identification during surgical procedures.

Resilient cantilevered fingers push calcified native leaflets radially outward, eliminating interference and improving hemodynamic performance.

A non-radiopaque surgical retractor system uses bendable arms to hold deployment devices during minimally invasive procedures.

Electromagnetic actuation moves the valve closing mechanism to regulate blood flow, reducing leakage through precise positioning.

A square stitch pattern secures prosthetic heart valve leaflets using a single continuous thread to form a robust mechanical bond.

Axially-raised portions on a sewing ring match the malformed D-shape of the mitral annulus, reducing trauma and abrasion during implantation.

Metal oxynitride coatings on prosthetic heart valves reduce metal ion release and adverse tissue reactions while maintaining structural strength.

Radial commissure windows extend the effective orifice area to reduce pressure gradients and maintain coronary access in small diameter prosthetic heart valves.

Pulsatile flow and microwave irradiation remove original cells from xenogenic bioprosthetic valves, preventing calcium deposition and extending durability.

Glutaraldehyde and tannin extract crosslink collagen to enhance edge rigidity in biological valves.

Asymmetric prosthetic valve leaflets generate spiral flow that reduces blood stagnation and thrombus risk while minimizing crease formation.

A prosthetic valve baffle structure redirects blood flow to eliminate turbulent regions and reduce thrombus formation risk.

An asymmetric skirt stent with reduced strength regions and a positioning member aligns valve corners to reduce central regurgitation.

Dip molding penetrates flowable polymer into stent member openings, distributing cyclic stress from blood pressure.

Diamond-shaped anchor frame with curved wires minimizes embolization and thrombus formation risks.

A tubular measuring tool extends a flexible cord around the heart to determine size via indicia and scale.

Aldehyde cross-linking precedes PEG-glycerol treatment, preserving tissue dimensions and limiting calcification despite dry storage.

A collapsible heart valve stent integrates a toroidal sealing member to conform tightly against the native annulus.

Segmented bladders in a cardiac jacket provide targeted support for mitral valve repair.

Composite soft segments resolve tensile strength versus biostability contradictions in gastric fluid environments.

Dual filters positioned in brachiocephalic and left common carotid arteries prevent stroke risk by intercepting particulates before cerebral circulation.

Flexible stent posts flex inward to close leaflets, reducing pressure loss and preventing thrombosis.

Angular offset between woven layers in a prosthetic heart valve sealing feature reduces localized loading failures and improves durability.

Segmented self-expanding tabs capture leaflets sequentially, resolving the trade-off between secure anchoring and minimally invasive delivery.

A collapsible braided wire frame anchors a prosthetic heart valve within the native annulus.

A transcatheter delivery system uses a coupling structure to enable controlled expansion and contraction of the prosthetic heart valve.

A braided anchor member actuates between delivery and deployed configurations to enable percutaneous heart valve replacement.

A continuously-operating cooler uses thermoelectric elements to maintain cell transplant temperature within a sterile handling system.

Anti-pivoting foot extends radially to counteract ventricular contraction forces, preventing upstream rotation of the prosthetic valve.

Segmented holder feet with internal channels allow circumferential suturing, preventing paravalvular leakage caused by wide foot designs.

Segmented expandable frames sandwich native leaflets to anchor replacement valves, reducing embolism risks during minimally invasive delivery.

A stent valve seal employs a swellable envelope that expands upon blood contact to obstruct para-prosthesis leakage while maintaining recaptuability.

Outward-angled commissure posts in a flexible support frame expand the outflow orifice area, reducing pressure gradients across the valve to improve blood flow.

Segmented support structures distribute mechanical stress to prevent rupture while biologically active agents reduce clot formation.

Segmented expandable frame and dynamic valve block left-to-right blood flow while enabling controlled re-access to the left atrium for subsequent interventions.

Patterned substrate deforms bioprosthetic tissue to reduce thickness, preventing uncontrolled folding and tissue damage during crimping.