Transvascular Endocardial Electrodes TRIZ Cases

Thermal annealing of silicone injection molded parts achieves precise curvature angles and forces while maintaining flexibility.

Magnetic transducers detect metal interference by comparing sensed field values against thresholds to correct force readings.

A coronary sinus pacing lead uses an angioplasty balloon cavity to temporarily secure the device for advancement through tortuous veins.

A medical lead uses conformal electrodes with interconnected, spaced-apart elements to contact myocardial tissue.

An implantable medical device predicts thoracic fluid accumulation using physiologic parameters.

A catheter uses a resilient member and magnetic sensor to detect distal tip position changes during tissue contact.

A bimetallic thermal switch breaks the electrode circuit during MRI exposure, preventing tissue damage from RF-induced heating.

An injection-molded sealing element forms an integral part of the electrode tip housing to provide a fluid-tight seal.

Friction-based V-shaped coupling limits torque transmission to prevent tissue coring while enabling easy repositioning of cardiac implants.

A cardiac stimulation system determines optimal vectors and timing offsets using physiological signal feedback.

A stranded tether cable with helically wrapped strands secures a biostimulator, reducing fatigue breakage from bending stresses.

A multimodal left atrial appendage occlusion device integrates a biocompatible filling material with a wireless MEMS transponder unit for physiological sensing.

A reusable leadless pacemaker delivery system uses a tether snare and reset mechanism to capture and release devices for serial implantation.

Wireless cardiac pacing device eliminates invasive leads to reduce health risks and improve energy transfer efficiency.

A control circuit determines cardiac capture thresholds for multiple left ventricular pacing channels using evoked response sensing.

Circuit swaps cathode and anode connections to deliver anodal pacing pulses, overcoming fixed cathodal connector limitations.

Analyzes consecutive cardiac signal amplitudes to verify atrial electrode positioning, preventing erroneous ATP delivery during tachycardia.

Beta-form PVDF in a fibrous matrix controls tissue ingrowth and oxidative stress while maintaining electrical conductivity.

Implantable substrate stimulates cardiomyocyte growth via electrical potential, overcoming skeletal muscle fatigue in cardiac support.

Integrating conductive traces into catheter shafts eliminates wire bundle displacement and open circuit failures.

A delivery catheter uses adjustable tethers to align and lock a leadless cardiac pacemaker during implantation.

Dynamic shape change in elongate members enables navigation through tortuous anatomy, reducing procedure time and risk during lead removal.

Nesting low voltage conductors inside high voltage conductor lumens reduces lead assembly diameter while maintaining electrical isolation.

Carbon nanotube yarn spirally wound on pacemaker electrode leads improves mechanical strength and flexibility.

Lubricious coating on an elongated tube reduces friction during subcutaneous tunneling, preventing lead damage from high mechanical stress.

Automated threshold detection eliminates manual programming complexity while maintaining therapy efficacy and conserving battery life.

Axial force folds the segmented sleeve outward, increasing contact area to prevent tissue perforation and ensure stable helix engagement.

Electropolymerized polymer coating on titanium nitride prevents oxide layer formation and reduces tissue irritation.

A medical device captures an implanted elongated structure using a manipulator mechanism to reposition it along a straighter pathway.

Segmenting the lead body into two branches increases distance between stimulation points while reducing phrenic nerve interference.

Microcable pacing lead with exposed electrodes stimulates multiple cardiac areas via coronary veins.

A removably anchorable guidewire with an expandable fixator eliminates catheter slitting, reducing user error and improving lead placement efficiency.

A delivery catheter uses a deflectable proximal section to navigate the heart and position a leadless pacing device.

Cantilevered fingers on a hypotube distribute traction forces over a larger area, reducing the risk of lead distortion or breakage during extraction.

A terminal tool with an independently rotatable electrical connector body maintains signal continuity during lead extension.

Capacitance and inductance signals quantify lead-tissue coupling, eliminating radiation exposure from fluoroscopy while ensuring optimal device placement.

A vibration transmission apparatus couples a generator to an implanted device to dislodge it from soft tissue.

A guide wire system with an expandable support section maintains stable positioning within tissue walls during medical device implantation.

A catheter integrates electrodes and pressure sensors to detect dyssynchrony.

A temporary pacing lead uses a curled shaft to position within the heart chamber without fluoroscopic guidance.

A CRT device determines optimal electrode placement using intracardiac electrogram data to guide lead positioning.

Segmenting defibrillation electrodes with insulating sections reduces impedance and dielectric breakdown risks while maintaining catheter flexibility.

Actuating member prevents inward deflection of jaw members, resolving the contradiction between ease of operation and engagement stability.

A tissue stimulation circuit uses a single capacitor and switching mechanism to deliver electrical energy.

Permutation entropy detects low-complexity periods in state space, enabling reliable fibrillation termination with minimal energy consumption.

Applying segmentation principles to interrupt selected cable conductors, improving electrical isolation and flexibility while preventing short circuits.