Catheter TRIZ Cases

A catheter tip with a distal expansile section expands radially to accommodate ingested clots.

Lateral light redirection via a waveguide neural interface reduces the Becquerel effect at electrode sites, enhancing neural recording accuracy.

Rotatable cap and self-sealing septum resolve seal integrity issues during assembly while improving insertion site visibility.

Collapsible sleeve protects catheter from contamination while hydrophilic coating ensures low-friction insertion.

Actuating a deformable elastomeric element redirects focused light for scanning, resolving cannula diameter constraints on fiber movement.

Zwitterionic stabilizer protects enzyme activity in sensing membranes, enabling high-temperature curing and extended pH range operation.

A vacuum generator with a plunger and piston retracts the needle assembly into the barrel.

Offset hinge points and overlapping channels reduce displacement force while positioning OCT sensors near the cutter for precise tissue imaging.

Dual-cuff apparatus measures pulse waves to evaluate vascular endothelial function without ultrasonic imaging.

Integrated impedance, pressure, and fiber-optic sensors in a vena cava filter detect thrombi, enabling timely removal and reducing fibrotic encapsulation risks.

A microneedle device uses a vacuum chamber to withdraw blood through the skin.

A blood glucose meter uses a radio communication section to transmit a puncturing allowing signal when a specimen is inserted.

Segmented caps replace bulky hubs on PICC lines, reducing bacterial colonization and accidental removal risks.

A transcutaneous sensor produces electrical signals indicative of glucose concentration for a receiver that displays calibrated data.

An implantable system uses radio frequency signals to measure lung fluid levels and blood pressure simultaneously.

Segmenting the base and clip minimizes vertical profile while preventing catheter disruption during extended convection-enhanced delivery treatments.

Reversing extracorporeal blood flow enables real-time cardiac output measurement without treatment interruption, reducing unnecessary circulation time.

Automated carina detection in OCT data calculates median angles to define visualization planes, reducing vessel damage during stent deployment.

Feedback circuitry senses electrical noise in transmission cables and generates a compensatory signal to cancel interference before recording.

Processing circuitry determines coherence between maternal and abdominal electrocardiogram signals to extract the fetal electrocardiogram.

A capillary chamber draws blood from a jugular vein using surface tension and vein pressure.

Transfer functions adjust signals from varied catheter geometries to eliminate map distortion, enabling accurate merging of multi-device data.

An optical tomography system switches wavelength resolution using a zoom lens to adjust the interference light bandwidth entering the sensor.

An outward curve permits partial collapse to reduce esophageal pressure necrosis, while a rib prevents full lumen blockage.

An esophageal catheter applies pacing signals to the heart to determine ablation effectiveness without invasive procedures.

Unified X-bar stopcock reduces blood loss and infection risk by minimizing disconnections during pulmonary artery catheterization.

A dual-mode sensing apparatus uses contact and non-contact modes to map electrical properties.

A cuffless finger clip uses laser speckle contrast and photoplethysmography to assess vascular health.

A medical insertion device uses a guide sleeve and retractor control element to ensure precise linear movement during the insertion process.

A carbon-coated catheter sleeve integrates with epithelial tissues to form a cellular barrier, preventing microbial colonization and reducing infection risks.

Flexible adjustable tips resolve maneuverability constraints by allowing dynamic angulation during medical procedures.

A catheter system delivers ablation energy and therapeutic agents through a single integrated device.

A unified cannula integrates an amperometric glucose sensor with a fluid delivery catheter for simultaneous subcutaneous monitoring and insulin administration.

Derivative ratio analysis distinguishes near-field from far-field ventricular activity, resolving signal interference during diagnostic catheterization.

Spectral fast Fourier transform processing of vascular waveforms detects volume status, enabling guided fluid resuscitation and preventing hemodynamic collapse.

A blood flow image diagnosis device separates surface layer vessel signals from background tissue noise using disparity compensation and mask creation.

Barcode scanner merges optical sensing with signal processing to determine respiratory frequency without extra equipment.

A shape sensing system mounted on an ultrasound probe measures instrument geometry during deployment to reconstruct lumen structure.

A dual actuator mechanism actively returns a steerable catheter shaft to a straight configuration, maintaining reliability as responsiveness degrades.

An arterial compression device incorporates an aperture for ulnar artery access, enabling clinicians to assess radial patency while applying targeted pressure.

A coaxial strut with circumferential slots maintains axial length in a deflectable catheter during repeated deflections.

A medical device uses convective cooling from blood flow to determine precise intra-cardiac positioning for targeted ablation.

A robotic drive mechanism advances and rotates a catheter guide through blood vessels using alternating motion frequencies.

Segmented struts extend radially to prevent dislodgment, ensuring stable fluid flow without excessive strain on the device structure.

Integrated mixer and syringe assembly draws blood samples through a stabilizer, resolving the trade-off between mixing consistency and device complexity.

Bonding metal distal tip to coil inner surface prevents outer diameter expansion and reduces separation risk during insertion.

Radial expansion of a deformable catheter captures thrombi via transverse openings, eliminating vessel wall injury from sharp instruments.

Three deflection wire assemblies with different radii enable multi-shape catheter navigation, resolving versatility complexity trade-offs.

Removable securing members attach a stylet cap to a catheter connection hub, ensuring precise distal positioning and stable control during insertion.

A dual-formulation chlorhexidine coating applies distinct chemical compositions to the interior and exterior surfaces of medical devices.