Catheter TRIZ Cases

Automated transport, holding, and sorting remove laser-welded pull wire assemblies quickly while reducing handling defects and operator strain.

An interference-fit tube grip and collar create a leak-proof peritoneal dialysis connection while reducing contamination risk and enabling emergency flow cutoff.

An integral flow restrictor and removable poppet balance accurate pressure monitoring with fast flushing to prevent coagulation in disposable transducers.

A blade section axially slits the tube end during insertion, reducing stress, preventing leaks, and simplifying medical tube assembly.

A notched wrapping set screw secures catheter pull wires without manual wraps or welds, improving assembly consistency and inspection.

A freely rotating outer grip lets hose fittings align without twisting the hose, reducing torque, strain, and kinking during accessory changes.

A fluororesin tube with zero or positive longitudinal thermal expansion prevents gaps and air bubbles at catheter connection points.

A reinforced ePTFE tube expands radially for device passage while limiting axial stretch and preventing kinks during access.

Composite radial and axial ePTFE tubing expands for larger device passage while resisting kinking and preserving tube integrity.

Positive axial thermal expansion keeps fluororesin tube connection parts in contact during heat shrinkage, preventing gaps and air bubbles.

Bio-based plasticizers in high-IV PVC tubing cut phthalate leaching while preserving flexibility, strength, and fluid extraction resistance.

A rail-and-cap fastener structure keeps conductive contact during sliding, enabling repeated self-mating attachment between electronic devices.

Capacitive touch gating blocks catheter joystick motion when the operator is not touching it, preventing unintended device actuation.

Radial ePTFE and reinforcement let medical tubing expand for device passage while limiting axial stretch and preventing kinks.

Infrared laser welding joins the shell and collapsible rib to improve analyte sensor assembly reliability while avoiding adhesive-related irritation.

A flexible inner tube with interlaced braid layers balances pressure resistance, bending resistance, and flexibility in medical tubing.

A conductive multilayer irrigation tube dissipates static charge in ablation catheters, reducing RF noise and improving EP mapping accuracy.

A rigid-flange and flexible-cone adapter links cryotreatment hoses to diverse scavenging outlets without country-specific fittings.

A pole- or bed-mounted clamp crimps suction tubing to stop airflow noise while holding the catheter and wrapper clean, organized, and ready.

A reusable elastomer band secures medical tubing without adhesive residue, while auto-loosening under excess force to prevent occlusion.

Localized conduction heating with radial compression dies improves parison stretching control, producing shorter balloon tapers and larger diameters.

Controlled longitudinal thermal expansion keeps catheter connection parts in contact during heat shrinkage, preventing gaps and air bubbles.

Adjustable angled support blocks stabilize outward medical devices to prevent skin compression, vasculature tenting, bleeding, and discomfort.

An accordion collar with guide pins expands over wider ends, then retracts for conformal coupling in automated assembly.

Opposite-wound inner and outer wire layers improve catheter torque transfer to the distal end during both clockwise and counterclockwise rotation.

Adding PE-g-PEO to polyolefin or TPE tubing improves solvent bonding to rigid connectors while preserving airtight seals and automated assembly.

A spherical linkage coupler transmits axial and transverse forces mechanically, improving catheter tissue contact sensing while avoiding RF and thermal interference.

Controlling voids around nylon braided strands in a TPU tube improves liquid visibility and pressure resistance for medical use.

Laser-marked pad alignment and ultrasonic lead attachment cut soldering time and electrical short risk in dense basket catheter assemblies.

Accordion regions let a rigid collar expand over wider distal ends, then retract for secure coupling and simpler automated assembly.

A silicone-fluoroalkyl copolymer cover cuts post-puncture water leakiness while preserving flexibility and kink resistance in dialysis grafts.

A reinforced side wall and opening edge help a sensor needle resist bending at the lateral opening while reducing insertion stress on the subject.

Automatic valve translation opens flow on coupling and closes on disconnection, enabling sterile tubular repositioning without leakage.

A spring-driven guide pin and lockout track automatically sheath the needle after cap removal, reducing post-use exposure and tampering risk.

An interlocking tube interface expands the joining area to resist radial pressure, reduce cracking on bending, and improve catheter durability.

A spring-driven guide pin and lockout track automatically sheath the needle after cap removal to prevent contaminated needle re-exposure.

A segmented distal catheter shaft uses bonded inner and outer jacket sections to tailor flexibility, maneuverability, and kink resistance.

A pre-sterile connector assembly uses interference fit, a gripping collar, and flow clamping to secure dialysis tubing while limiting contamination.

Preheating tube separation regions enables fast sterile joining without a contaminated blade, reducing hazardous waste and extra heating.

A compression sleeve and wavelength-tuned fiber laser create strong hermetic polymer tube welds while limiting balloon distortion and expansion.

Laser-patterned graphene electrodes in an elastomer shell enable stable neurotransmitter sensing in moving soft organs without rigid implant failure.

Dual feedback loops cancel large PPG DC offsets, preventing amplifier saturation while preserving small AC pulse signals at low power.

Laser planing removes carbon edge asperities and, with a limiting membrane, cuts interferent background for more sensitive in vivo analyte sensing.

Transverse optical sensing at the catheter tip detects true electrode-tissue contact force while reducing false positives from shaft deflection.

A rigid flanged segment and flexible conical segment create a leak-proof fit between cryotreatment consoles and varied local scavenging outlets.

A capacitive touch circuit and signal enable logic verify joystick contact before catheter device motion, reducing unintended actuation risk.

Using low-history PTFE extruded below its melting point, this tube keeps peelability, 40%+ heat shrinkage, and transparency.

Memory metal dual baskets expand from a microcatheter to capture hard thrombi securely and retrieve them without embolization or proximal occlusion.

A push-lock seal and radial spoke plate secure the catheter quickly, cutting connection time while maintaining reliable fluid delivery.

Movable, shape-adaptive tips and tissue temperature measurement help limit non-target freezing during minimally invasive cardiac ablation.

Numerical modeling predicts tissue ablation outcomes based on patient anatomy, resolving precision inconsistencies in cardiac lesion creation.

A device estimates unawake heartbeat feature values from wakeful signals to set a dynamic index range for real-time monitoring.

A lancet with a non-circular coupling periphery ensures precise needle orientation within the lancing device receiver.

A nested catheter assembly maintains a precise 0.1 to 0.35 mm clearance between the guiding and microcatheters.

Emitter housing aligns energy guide with plasma generator to concentrate optical energy, resolving imprecise fracture induction in calcified lesions.

A pulse oximeter system analyzes oxygen saturation gradients across multiple anatomical sites to enhance newborn screening accuracy.

Self-assembled nanocomposite chains with metal domains enable continuous electrochemical analyte monitoring in biofluids.

Mirror tunnel optical system generates multiple on-axis foci via annular wavefront segmentation, extending depth of focus beyond the Rayleigh range.

Bayonet mount couples spine retention hub to force sensor assembly, reducing manufacturing time and cost by simplifying electrode attachment.

A miniaturized optical fiber pressure sensor integrates into coronary guidewires using Fiber Bragg Gratings.

A porous polymer membrane isolates the sensor electrode from surrounding tissue, reducing irritation while maintaining glucose diffusion rates.

Implantable medical device tracks heart rate and blood pressure changes during respiration cycles to calculate baroreflex sensitivity in real time.

A reinforced closure anchor integrates a fabric layer with an adhesive side and an anchor member layer providing non-elastic reinforcement.

Segmenting the cuff into independent blowing portions reduces upstream volume noise and improves systolic detection accuracy.

A glucose sensor calibration method adjusts sensitivity using elapsed time and averaged data values.

A thermoplastic elastomer composition incorporates polyrotaxane additives to enhance mechanical strength and elongation properties.

A hermetically sealed wireless sensor uses capacitance changes to measure pressure without external power.

A glucose control index aggregates hyperglycemia and hypoglycemia data into a single metric for simplified patient management.

An endoscopic implanting instrument uses a tissue clip and clamping mechanism to secure capsule devices within hollow organs.

Integrated Device Level Tester detects faulty electrical connections between sensor contacts and PCBA without fluid exposure to prevent inaccurate readings.

Nested inner and outer braids isolate articulation forces to prevent buckling, maintaining structural integrity without increasing cross-sectional area.

A medical connector uses a rotary and axially translatable female luer-lock fitting with elastic thrust means.

Segmented inner catheter body with varying flexural rigidity prevents buckling during insertion while maintaining distal flexibility for safe navigation.

Segmented design and tapered surfaces allow larger bore catheters to navigate curved vessels while reducing clot fragmentation during intracranial access.

Dual-diffusion catheter walls separate rapid release from sustained delivery, preventing bacterial biofilm formation during prolonged vascular access.

A blood sequestration device uses an air permeable barrier to passively collect the initial contaminated aliquot via patient pressure.

Curvature-based reference lines resolve tidal wave interference in pulse wave analysis, delivering an accurate sharpness index for irregular signal types.