Catheter TRIZ Cases

A flexible electrochemical sensor uses a silane coupling agent to bond gold layers on a polymer film, creating a monolithic electrode structure.

Stimulating the atria during the ventricular refractory period delays contraction and reduces heart rate without triggering tachyarrhythmia.

Piezoresistive sensor array positions automatically to measure pulse depth and length, resolving examiner subjectivity.

Vacuum placement positions biosensor wires to reduce moisture ingress and improve connection reliability.

Multiple parallel flow paths with smaller valve elements minimize reflux and leakage during high pressure contrast agent infusions.

A flexible clip uses resilient fingers to grip medical tubing and garments securely without metal components.

Polyurea and polysiloxane composite membranes resolve oxygen permeability versus thermal stability trade-offs in glucose sensors.

Nested helical shaping structure enables precise electrode positioning in renal arteries while maintaining vessel patency.

Segmented containment chambers isolate emboli during laser ablation, reducing native tissue loss while maintaining vessel patency.

Rotating priming knob converts motion to store energy, solving manual dexterity issues for arthritis patients.

An actuator-driven latch mechanism secures medical articles to prevent longitudinal movement and reduce infection risks associated with traditional taping.

A collapsible tubular member captures kidney stones by expanding to hold fragments within a mesh structure.

A cam surface mediates dimensional variations in plastic components to ensure consistent retain and release forces despite manufacturing tolerances.

Processor identifies ectopic beats via P wave morphology analysis, excluding intracardiac signals to prevent noise in heart chamber mapping.

Fluorescent molecular agents bind to tumor cells, enabling real-time visualization of microscopic disease within the resection bed.

Segmenting a catheter shaft into uniform sections with varying material properties resolves the trade-off between insertion control and patient comfort.

A surgical system uses light sensors and signal processing to detect blood vessels at the instrument tip.

A tissue illumination system deploys a light source within a cardiac chamber to illuminate translucent tissue from behind.

Segmented protective tubes with varying inner diameters maintain GRIN lens adhesion under bending forces, preventing detachment in curved vessels.

Rough prongs on the strand prevent seed migration during cancer treatment while flexible geometry allows easy needle dispensing.

An AI-controlled laser system optimizes power and timing via EKG feedback to create patent channels while preventing thermal damage to heart tissue.

Merging magnetic sensing with impedance measurement replaces complex ACL systems, improving catheter location accuracy.

Segmenting diffusion pathways via microneedle arrays reduces lag times while maintaining fluidic contact for accurate analyte monitoring.

A pressure sensor captures proximal and distal values to calculate a Pd/Pa ratio for coronary artery assessment.

A probe delivery device uses a shield sleeve to advance an asymmetric probe into a vascular access device.

A blood lancet device uses a sliding sleeve with elastic deformation slots to expose and retract the needle tip.

Welding a reinforcing tube to the catheter shaft and hub prevents shaft dislodgement and kinking during intraluminal treatments.

A controller adjusts physiological signal collection parameters based on real-time catheter context characteristics to optimize three-dimensional heart map generation.

Coil antennas and capacitors enable magnetic coupling for wireless data transmission in contact lenses, reducing power consumption and human body influence.

Offset suturing plates secure an elongate implant body to restore saliva flow and maintain duct integrity against obstruction from stones or kinks.

Spatially-resolved spectroscopy in a circular probe measures absolute hemoglobin concentrations independent of tissue scattering assumptions.

Removable hub locks guidewire position to prevent vascular access loss during complex catheter exchanges in tortuous anatomy.

Pulse oximeter waveform analysis calculates the second derivative of amplitude to assess cardiac pumping function trends.

Ultrawideband radar transmits electromagnetic pulses through the chest wall to detect cardiac chamber volume changes without invasive contact.

Processor calculates cryoablation dose using time to effect from mapping signals, eliminating real-time temperature monitoring.

Hydrogel membranes with crosslinkers stabilize analyte sensor signals by reducing early signal attenuation and night-time drop-outs.

Parallel spine arrays maintain fixed electrode spacing during dragging motion, resolving low resolution mapping on irregular heart tissue.

Segmenting the valve assembly resolves sealing integrity versus cleaning accessibility contradictions, reducing contamination risk during sterilization.

Cryo-needles cool surrounding tissue to inhibit sensory nerves, reducing opiate dependency after spinal surgery.

A controller measures impedance between energy delivery elements to determine inner catheter location within renal blood vessels.

A cam-driven double-swing-arm mechanism guides a blade along a V-formed path to control incision geometry.

Segmented transfer disks maintain sterility while moving fluids, reducing contamination risks in diagnostic testing.

Heated vapor inner balloon transfers thermal energy through a contact area while an outer fluid balloon occludes blood flow to protect healthy tissue.

Elastomeric base and adjustable straps secure catheters, preventing pistoning that causes tissue damage.

A transcutaneous sensor system uses a sliding electronics unit and sealed contacts for continuous glucose monitoring.

A glucose monitor uses heart rate data to determine diffusion time for interstitial fluid measurements.

A catheter control system uses embedded sensors and fluid actuators to autonomously adjust device position and orientation.

Grooved lid and waterproof adhesive patch stabilize feeding tubes while preventing skin irritation from frequent tape replacement.

A fiber optic guidewire integrates multiple Fiber Bragg Gratings to detect pressure signals along its length.