Catheter TRIZ Cases

A medical device analyte sensor incorporates a reserve loop within its passive portion to accommodate insertion path changes during cannula movement.

An inward-tapering design eliminates outward ridges on the hub and strain relief, preventing snagging on external objects during medical procedures.

A programmable projector and camera system deliver controlled light for video plethysmography pulse measurement.

An integrated coupler merges pull ring and sensor receptacles to reduce assembly complexity and improve mapping accuracy.

Inflatable balloon catheter measures blood pressure decay to assess renal denervation efficacy during treatment.

Fluid injection tube contours around a catheter steering element to distribute coolant through multiple ports.

STIR-UTE MRI sequences delineate lethal temperature zones between -40°C and -8°C, resolving conventional imaging precision limits during cryoablation.

Electroanatomical mapping system computes vectorcardiogram repolarization loops from multi-electrode catheter data to generate detailed cardiac tissue maps.

A camera unit detects touch pressure by analyzing image data color information and illumination values.

An impedance catheter measures luminal cross-sectional areas using electrical conductance signals from injected solutions.

An intrabody device uses multiple tubular ducts to eject and suction liquid medical substances within a venous lumen.

Frequency domain transformation and stability coefficients process physiological signals to calculate blood oxygen levels under movement interference.

Computational scaling laws calculate distal vascular resistance from proximal angiography measurements.

A cryogen pump adjusts motor speed using temperature and gas flow feedback to optimize fluid delivery rates.

A catheter braid joins thin wires by wrapping one wire around the side surface of another to increase joint strength without additional members.

A tapered pelvic arterial catheter navigates tortuous vessels to enable bilateral uterine artery access, reducing procedure duration and vessel trauma.

An expandable ablation structure unfurls around an expansion member to deliver energy across varying body lumen diameters.

A cam-actuated puncturing device uses drive and retraction springs to move a carrier between shielded positions.

Nested double-shell brackets secure sterile connectors to prevent contamination during peritoneal dialysis docking operations.

Cutter assembly uses helical flutes to remove occlusive material from blood vessels.

A catheter hub incorporates a recessed relief portion to accommodate varying body thicknesses during assembly.

Gears and telescopic modules in a robotic drive system enable precise four-axis catheter navigation without manual handles.

A vascular catheter uses a braided reinforcement to expand its inner perimeter for secure connector engagement.

Glass fiber reinforcing layers eliminate MRI interference and self-heating while maintaining axial strength.

A medical catheter uses wound reinforcement filaments to create sections with specific stiffness and flexibility.

Embedding microelectronics in a porous adhesive prevents skin irritation while maintaining attachment reliability.

A myocardial excitation visualization apparatus generates pseudo action potential waveforms from intracardiac electrocardiograms for real-time display.

A continuous glucose monitoring system routes sensor data through a cloud hub using category-based encryption and selective forwarding.

An intermediary receiver copies aortic blood pressure signals to eliminate connector disconnection and recalibration steps.

Triangulates catheter tip position using torso pad electrical signals, eliminating chest X-ray verification.

Segmented cap parts constrain wobbling in catheter rotary apparatuses, preventing image distortion and blood vessel damage from motor vibration.

A biometric alarm method maintains alerts during a set period while changing the alarm type to match the receiver's operating mode.

A fingertip heart rate monitor uses an optical sensor to detect reflected light from blood vessels for accurate pulse measurement.

Segmented guide extension catheter balances pushability and followability in coronary arteries via a flexible distal tip.

A bio signal measuring apparatus samples pulse signals to detect heartbeat characteristics, reducing movement error and power consumption.

Integrated interface merges automated graphing with electronic medical record access to resolve contradictions between automation and data integration.

Replacing lead screws with direct rotation via bevel gears reduces handle length while composite wires ensure MR compatibility.

Thermal fusion fuses polyether block amide materials to eliminate manual bonding errors and ensure consistent manufacturing reproducibility.

Analyte sensor uses temperature rate changes to detect MRI exposure and corrects analyte data for accurate continuous monitoring.

A mobile plethysmographic device generates photoplethysmograph signals using optical sensors and validates data with an integrated accelerometer.

Multi-section finger scanning captures vein patterns and blood flow to prevent spoofing attacks in mobile payment systems.

An elastomeric retaining strap grips catheters through a passageway to prevent axial movement and pistoning without sutures.

A leadless pacemaker integrates a piezoelectric membrane within its housing to generate voltage from external pressure changes.

A robotic catheter system articulates the distal end while compensating for torsional forces by urging the sheath to twist in the opposite direction.

A catheter fixing device uses a movement mechanism to allow the hub fixation part to move relative to the skin fixation part.

Extracts peak-to-peak time intervals to assess ischemia and mitral valve regurgitation, resolving non-specific monitoring limitations.

A cryogenic balloon catheter integrates a distal pressure sensor to monitor fluid dynamics during inflation.