Catheter TRIZ Cases

Interleaved multi-contrast MRI acquisition synchronizes spatially co-registered 3D image sets within a single scan cycle.

An implantable medical device system automatically sets personalized alarm thresholds using stored physiological parameter data.

Segmented tube basket circulates cryogenic fluid through thermally conductive elements to cool target tissue without occluding renal artery blood flow.

A biomagnetism measurement device uses an inflatable portion to fix a magnetic sensor to its inner wall, maintaining precise orientation during insertion.

Spectral-domain optical coherence tomography provides real-time microscopic imaging to reduce positive tumor margins during surgical resection.

Ventricular pacemaker detects atrial timing fiducials to synchronize pacing therapy without continuous wireless communication.

A lancing device uses a hinged forward portion to guide lancets front end first into the holder.

Cavity orients optical fiber cross-section at an angle to deliver electromagnetic radiation.

Segmented PCB layers isolate the sensor from thermal interference to ensure accurate tissue temperature measurement during RF ablation.

Flexible arms and legs deploy to clamp an anchor onto the heart wall, reducing blood flow turbulence and thrombi formation risk.

A disposable blood lancing device uses a plastic spring element and cam section to drive needle extension and retraction.

Multi-channel optical probe segments fibers for parallel acquisition while air-bearing controller reduces scanning time and minimizes artifacts.

Segmented aperture isolates transparent window from Luer fitting to resolve securement reliability versus visual inspection contradiction.

Rotating segmented spine struts enable precise electrode alignment during assembly, reducing manufacturing time and cost.

Array sensor generates 3D energy distribution from photoplethysmography signals to identify microcirculation states.

Decomposing pulse signals into characteristic components enables precise physiological condition determination through spectrum projection.

Inner tubular members with discontinuous slots and enlarged apertures provide variable flexibility, reducing kinking risks during tortuous navigation.

A nested embolic device forms a cavity to accommodate a second segment, providing enhanced structural stability.

Segmenting the shaft into a proximal braid and distal coil reduces diameter while maintaining pushability to navigate tortuous anatomy without kinking.

Dual valves in the male luer connector seal residual fluids via partial vacuum, preventing hazardous exposure during disconnection.

Processor generates time-frequency distributions from multi-electrode signals to identify dominant frequency values in cardiac tissue mapping.

Rotating asymmetrical cutting element lifts target tissue via torque cable, preventing injury to surrounding structures during electrosurgical incision.

A pulse detector employs dual adaptive filters with a switching mechanism to filter noise from wrist-worn signals, reducing processing load.

Pseudo-random code sets cancel auto-correlation sidelobes to resolve security and measurement precision contradictions in ultra-wideband systems.

Elliptical reflectors in a multi-focus condenser concentrate light from multiple wavelengths, resolving low signal-to-noise ratios in wearable sensors.

Two-wire bus merges data and power to reduce interference while host controller synchronizes sensor actions for accurate physiological monitoring.

Nested anchor with resilient disk counters upward balloon forces to prevent dislodgement and maintain reliable tamponade effect.

A surgical end effector assembly uses a clevis with pivot and cam pins to actuate jaw members for precise tissue manipulation.

An expandable chemical ablation delivery system uses a guide tube and needle to inject agents across the vessel wall.

Insulator between inner and outer electrodes creates symmetric electric fields, resolving orientation-dependent ablation depth inconsistencies.

Segmentation separates flexible manipulation wings from a rigid stabilizing member, resolving the trade-off between ease of operation and assembly stability.

Coordinate transformation of ECG signals determines catheter tip position without ionizing radiation, reducing patient exposure and apparatus complexity.

A safety pen needle device uses a rotatable sleeve and guide protrusions to lock the shield in place.

Segmenting the electrode array along a shape-memory spiral reduces localized barotrauma and gas bubble formation during irreversible electroporation procedures.

A switchable voltage electrochemical sensor adjusts measurement ranges to selectively detect target molecules.

A catheter handle integrates a slide mechanism to deploy the near-distal end structure along the axial direction.

A signal processing device transforms touch state data into frequency spectral distributions to detect pulse information.

Asymmetric fiber cross-sections resolve low packing density bottlenecks, boosting laser ablation capability and calcium penetration.

A hydrochromatic layer on a medical dressing changes color upon moisture contact, enabling early detection of fluid contamination at insertion sites.

A state-space model with an extended Kalman filter estimates cardiovascular parameters from arterial blood pressure, pulse oximetry, and intracranial pressure signals.

Expanded distal optical window reduces dead space at the cutting surface, improving tissue ablation efficiency.

Analyte measurement devices determine calibration concentrations using blood from alternative body sites to adjust sensor signals.

A submersible pump circulates liquid cryogen through a baffled linear heat exchanger to achieve precise subcooling before probe delivery.

A lancing actuator uses a nested drive element and combined compression torsion spring to release stored energy for puncture.

Segmenting electronics into a detachable module reduces device complexity while enabling high-resolution 3D pressure mapping.

An expandable distal end assembly with a deflectable tip integrates circumferential and focal ablation capabilities into one medical probe.

An implantable device uses an accelerometer to measure endocardial acceleration signals for detecting atrial mechanical activity.