Catheter TRIZ Cases

An accelerometer detects motion artifacts to suppress noise and maintain measurement accuracy during athletic activities.

An implantable medical device calculates impedance changes between cardiac leads and the housing to detect heart wall motion.

Segmenting the return electrode into discrete contact points confines radiofrequency current flow, preventing patient burns during microsurgery.

Stabilizing agents in the collection tube prevent signal degradation, enabling accurate remote DNA damage quantification.

A resealable catheter package uses a perforated flap and adhesive seal to enable easy opening and sterile storage for hydrophilic devices.

Variable taper strain relief reduces stress concentration at the coupling portion to prevent catheter body kinks.

Jacket constricts annular segments via vacuum to increase friction and maintain shape against tissue without internal rods, preserving inner lumen diameter.

A catheter controller measures local impedance between electrodes to detect sheath coverage.

Switching to suboptimal pacing sequences triggers myocardial adaptation, reducing left ventricle size and improving cardiac output.

Catheter head with angled reflection surface directs light into cerebral tissue, enabling precise blood flow measurement while minimizing trauma.

Microwave balloon catheter targets renal sympathetic nerves while shielding healthy tissue from thermal damage.

A medical system determines a second transducer set mutually exclusive with a first transducer set to record electrograms.

Segmenting the adhesive pad from the clip reduces skin irritation and infection risk while maintaining reliable catheter placement.

Computer system detects vessel clearing radius and quality metrics to trigger optical coherence tomography data collection.

A curved channel redirects central venous catheters away from the skin surface to prevent kinking and dislodgment.

External compression members divert emboli from cerebral circulation, avoiding intravascular filter trauma and microembolization risks.

Surgical implant with integrated sensing fibers measures physiological parameters wirelessly.

A segmented irrigation manifold distributes fluid evenly around electrodes, preventing thrombosis during irreversible electroporation ablation.

Discrete bonding members between the tubular member and liner improve torque transmission while maintaining flexibility.

A thrombectomy catheter uses a high-pressure waterjet to break up occlusive material within blood vessels.

Inner fluid delivery tubing and sealing gaskets deliver anticoagulants between splines, preventing thrombus formation and blood ingress into the catheter shaft.

A septotomy catheter uses a shape memory alloy cutting component to divide the aortic dissection septum.

A snare mandrel pulls a tethered device into a catheter lumen, eliminating tedious looping and threading steps.

Ultrasonic pulses transmit through skin to induce fluid shear stress that dislodges biodebris, preventing clogging and avoiding invasive surgical replacement.

Stack-of-stars k-space sampling oversamples data near the Kz axis to maintain signal suppression during 3D magnetic resonance imaging.

Automated processor analyzes catheter pressure patterns to identify acceptable swallowing events in gastrointestinal manometry procedures.

Expandable pericardial balloon mapping device enhances electrode contact with myocardial tissue to record monophasic action potentials.

A steerable intravascular catheter sheath uses a rotatable control knob to deflect the distal end portion for precise device placement.

An inverted channel retainer and adhesive anchor pads restrict catheter movement without direct skin contact, reducing infection risk.

Segmented guide restricts reverse movement, preventing reuse while maintaining structural integrity.

A blood pressure measuring apparatus adjusts cuff inflation speed based on detected pulse rate to ensure reliable pulsation data acquisition.

A pulse oximeter calculates signal quality by combining multiple indicators to guide sensor placement.

An elongate member inside the catheter shaft maintains a larger kink radius on the fluid tube, preventing obstruction when the outer shaft bends.

Piercing attachment mechanisms join components to blood sampling tubing, enabling user-adjustable positioning that eliminates pre-assembly constraints.

State sequence optimization resolves motion artifact peaks by computing transition metrics for accurate heart rate estimation.

Helical conducting elements on basket catheter splines integrate ECG electrodes with magnetic-field sensors to reduce component count.

A portable fluidic cartridge collects and meters bodily fluids to detect analytes via integrated reactants.

Periodic wavelength switching in a photoacoustic device separates blood vessel signals from background noise, enabling accurate blood pressure estimation.

Shoulders on a toggle spring constrain actuator movement to prevent permanent deformation and hose jamming in catheter valves.

Oxo-anion ring-opening polymerization creates porous polymeric structures that resolve the contradiction between breathability and microbial barrier integrity.

Dual working electrodes with longitudinally offset active sensing areas generate independent output signals for transcutaneous physiological monitoring.

A medical device monitors primary and secondary diagnostic parameters to detect worsening heart failure.

A flexible helical tubular part maintains stable positioning within the gastric fistula.

A planar sensing cannula merges insulin infusion and amperometric glucose detection into one subcutaneous element.

Segmenting patient metrics into temporal windows differentiates heart failure risk scores for precise alert classification.

A dermal glucose sensor uses a perfusion modulator to increase local blood flow, reducing physiological lag between interstitial fluid and venous levels.