Transvascular Endocardial Electrodes TRIZ Cases

Alternating coil pitches disrupt RF current flow to minimize heating and induced currents during MRI exposure.

An implantable medical system switches therapy delivery to an alternate electrode using a lead with redundant conductors.

Conductive coatings shield implantable pressure sensors from electromagnetic interference, preventing parasitic capacitance and measurement drift.

Deformable fixation fingers wedge between opposing tissue surfaces, eliminating elongate lead wires and reducing mechanical complications in cardiac pacing.

A medical device modifies anti-tachycardia pacing therapy using real-time latency metrics of evoked heart responses.

A slittable pull ring with a mesh region matching the tubular braid pattern provides consistent cutting force during catheter removal.

Laser welding anchors the fibrosis-limiting material to the shocking coil electrode, preventing separation during implantation.

Implantable device confirms pacemaker mediated tachycardia by measuring ventricular atrial intervals before and after extending the sensed atrioventricular interval.

A bi-directional rotary blood ring seal with a chevron-shaped cross section forms a fluid-tight barrier around the helix shaft.

Printing conductive traces on catheter shafts replaces manual soldering and wire bundles with integrated electrical pathways.

A threshold-based electrode switch prevents RF-induced voltage induction and tissue heating in pacemakers during MRI scans.

Flexible microstructures on a polymeric coating reduce wear and prevent short-circuiting in moving implantable leads.

Segmented leadless pacing devices combine extraction and merging principles to reduce infection risk while maintaining stable cardiac anchoring.

Merging contact and tail portions into one conductor eliminates multiple welds, reducing human error and damage risks in medical device assemblies.

An elastomeric seal in a housing enables axial movement to prevent fluid entry while maintaining a small electrode assembly diameter.

A cardiac electrophysiology device channels current out from arrhythmic substrate via resistors and selector switches to restore tissue electronic properties.

A carbon nanotube film wraps a metal conductive core in an electrode lead to enhance mechanical strength and electrical conductivity.

Bipolar electrode pair senses depolarization amplitude during left ventricular pacing to identify abnormal cardiac substrate.

Wire loops partitioned into triangles reconstruct position and orientation within a millimeter despite limited sensor quantity.

A multi-electrode lead uses intermediate electrode impedance monitoring to determine implantation depth during cardiac pacing procedures.

A defibrillation lead uses a melted quality tantalum core wire overlaid with platinum-iridium cladding.

An implantable device determines left ventricular pacing delays using measured atrial-ventricular conduction differences.

Segmenting the housing from the pacing electrode prevents interference with heart structures while enabling stable left bundle branch pacing.

Anchoring a guidewire with an expandable fixator allows cardiac lead delivery without catheter slitting, reducing procedural complexity and navigation errors.

A medical device system analyzes cardiac electrograms from multiple electrode vectors to adjust pacing parameters.

Carbon nanotube composites resolve the contradiction between electrode durability and tissue stimulation precision in pacemaker leads.

Segmented docking members with asymmetric heads allow safe snare capture, resolving the trade-off between retrieval ease and compact device volume.

Joint sensor coils measure mutual inductance to identify metal disturbance, preventing erroneous position readings during medical procedures.

A leadless pacemaker switches between electrical and mechanical sensor arrangements to detect atrial events, resolving weak signal reception from the ventricle.

A cardiac electrode lead uses a longitudinally extendable helical fixation device to anchor securely within the coronary sinus.

Standardizing the proximal end assembly reduces manufacturing complexity by sharing components between active and passive lead designs.

A non-rigid substrate with tissue anchors stimulates de novo trabecular fiber growth within the heart ventricle.