Catheter TRIZ Cases

A catheter distal tip embeds a thin-film pressure sensor using piezoresistive material to detect contact force vectors.

Interdigitated comb elements and torsion beams expand the mirror surface area beyond the stator footprint to resolve scanning angle limitations.

A catheter balloon delivers heated or cooled fluids to achieve controlled thermal ablation while preventing tissue charring and organ damage.

Trigger detector isolates relevant events from continuous data streams, reducing caregiver interpretation time.

Electronic apparatus computes a blood volume index from baseline and current electrical body impedance and heart rate measurements.

Dual-sided electrodes on a flexible base layer expand the active sensing area, reducing insertion pain while maintaining signal stability.

Segmenting the probe into a disposable tip and reusable fluid line reduces waste while maintaining sterilization standards for single-use procedures.

A frame-like spacer element surrounds a port needle to prevent shifting and bacterial entry during long-term use.

An expandable braided sack implant secures an elongated looping portion within its structure to occlude the aneurysm neck.

Segmented puller wires resolve the trade-off between structural simplicity and precise deflection versatility.

Segmentation and dynamics principles enable a releasable coupling mechanism that simplifies assembly, disassembly, and maintenance of medical instruments.

Curved slope sections on the insertion needle body form smooth apertures, reducing piercing pain and accelerating wound healing.

Gear arms rotate a cam to deflect wires, reducing mechanical complexity in steerable catheters.

Platinum-plated electrodes on a smart contact lens detect glucose in tears, eliminating pain from finger pricks.

Layered conductive materials mimic tissue conductivity to provide ground truth for source localization accuracy.

A cardiovascular analyzer synthesizes aortic arch pressure curves from bio-signals to calculate biodynamic indicators like blood flow resistance and vessel compliance.

A portable NMR apparatus measures blood parameters using low constant magnetic fields and radiofrequency excitation pulses.

A levered priming arm system moves a lancet carrier to store energy for precise skin penetration.

An applicator pre-assembles the sensor and transmitter to simplify attachment steps and reduce contamination risk.

A tuning pin mechanism preloads tension on steering actuator pull wires to control catheter deflection.

Periodic data transmission reduces power consumption while inductive charging eliminates surgical battery replacement for subcutaneous sensors.

Flow sensors detect temperature changes on heated elements to map pulmonary veins and the mitral valve, bypassing scar tissue that blocks electrical contact.

An integrated conditioning circuit removes ambient interference via a feedback loop to improve signal-to-noise ratio in portable physiological sensors.

Tapering wall thickness varies shaft stiffness, enabling navigation through tortuous vessels while maintaining proximal stability.

An implantable medical device identifies cardiac dysynchrony by comparing intrinsic heart rates against programmed maximum tracking thresholds.

A handheld analysis tool uses dual active states to switch the display without engaging the mechanical assembly.

Merging the ring electrode into the expandable frame eliminates separate components to increase bipolar ablation surface area.

Miniaturized capacitive pressure sensor with flexible substrate enables continuous wireless monitoring of mouse eye intraocular pressure.

A deflectable tip catheter integrates a loop antenna for active electromagnetic tracking within magnetic resonance imaging environments.

Composite siliconized polycarbonate polyurethanes resist alcohol-induced swelling and bursting, enabling safe power injection for long-term catheter use.

An expandable reservoir delivers a fixed ablative fluid dose to gastrointestinal tissue via thermal energy transfer.

Pressure sensors detect catheter bending to correct trajectory deviations in brain tissue.

A portable female urine catheter uses absorbent material to collect and transport discharge via capillary action.

Segmented coaxial tubes release coolant at distinct axial locations, eliminating pressure gradients that cause non-uniform tissue ablation.

A cardiac rhythm management device uses thoracic impedance vector clustering to detect physiological changes indicative of worsening heart failure.

A mechanical arrangement with a pivot above the longitudinal axis provides lever-like advantage to close jaw members.

Telescoping tubes guide pull wires in steerable catheters, preventing twisting during retraction for easier removal.

Segmented catheter shaft with varying stiffness resolves trade-offs between structural simplicity and distal torque transmission for arrhythmia treatments.

A stopcock lever integrates a blocking device to close gaps between the control handle and tube connections.

A catheter shape release mechanism retracts a pre-formed stylet to disengage the sheath from tissue.

An implantable device tracks blood pressure augmentation pressure to determine patient circadian states.

A catheter handle actuator restraining assembly maintains shaft deflection via frictional resistance.

Segmented cannula housing prevents accidental egress by applying compressive force via nested elastic lamellae and rigid outer sleeves.

A lancing device release member moves between primed and deployed positions to control needle deployment.

A depth-adjust mechanism for lancing devices uses a resiliently deflectable leg to provide a soft stop, reducing vibration and pain during penetration.

An impedance catheter measures luminal cross-sectional areas using conductance values from electrodes.

Porous outer ingrowth layers anchor the sleeve via tissue growth, preventing mucosal sloughing irritation and stricture.

An implantable sensor emits electromagnetic waves through interstitial fluid to measure glucose concentration.

A hollow guidewire filled with non-volatile fluid transmits intra-vascular pressure to an external sensor.

Segmented shape-memory alloy wires enable semi-autonomous navigation through complex vascular shapes while maintaining positioning accuracy.