Catheter TRIZ Cases

Controlled trimer content prevents surface dulling while maintaining water repellency in thermoplastic polyurethane catheters.

A blood pressure measurement device applies high-frequency cuff pressure oscillation to detect artery volume signal inflection points.

Compliant separator ring distances tubular socket probes from adjacent digits to ensure stable signal acquisition.

A processor-implemented initiation module regulates closed-loop entry using real-time sensor calibration factors and timestamp data.

Separate lumens in the bifurcated cannula prevent cross-contamination between infused fluids and extracted blood samples, eliminating repeated skin punctures.

A recompression unit increases pressure of expanded refrigerant gas to enable reuse within a closed loop.

Embedding the coil between lumen surfaces prevents sensor interference while maintaining structural rigidity during bending.

A processor calculates cardiac output using airway pressure and photoplethysmogram ratios from a blood volume sensor.

A glucose monitoring system models transport latency between interstitial fluid and blood plasma to estimate concentrations accurately.

An asymmetric braid with mixed tensile wires allows controlled bend deformation at bifurcations, reducing insertion time.

A cryogenic applicator delivers fluid through a barrel to a rolling head for skin treatment.

A multi-sensor blood pressure apparatus selects the optimal measurement site based on detected sphygmus wave characteristics.

Dual-directional coils in the catheter tube resolve torque transmission bottlenecks for flexible insertion.

A catheter positioning sled uses modular plates and motors to manipulate actuators across multiple axes for precise device control.

A flexible elongated shaft carries a semicircular positioning member to guide placement against the ectocervix.

Segmented catheter design merges rotating tip and real-time imaging to reduce vessel trauma during occlusion crossing.

Magnetic sensors on a catheter probe process cardiac signals within each cycle to update electroanatomical maps, eliminating fluoroscopy radiation exposure.

Segmented flexible layers enable continuous skin-worn monitoring while minimizing discomfort through integrated user feedback mechanisms.

Fabric sleeve with apertures secures catheters while preventing patient access to reduce infection risk.

A fluid management system uses bidirectional pumping to enable continuous lactate monitoring.

A vacuum pressure regulator uses a flexible member to modulate blood flow through a variable orifice geometry.

A magnetic tracking system estimates fluoroscope interference using a reaction field model to calculate true probe position.

A one-piece blow-molded package holds catheters in a spiral lumen with integrated luer retainers and loading tubes.

Varying spine lengths distribute tissue contact along a helical path, preventing continuous circumferential pressure that causes vein stenosis.

Centralized steering reduces mechanical complexity and operator error by merging nested catheters into a single unit with pre-formed curves.

A photoacoustic image generation apparatus detects insert tip position and wave output intensity to verify hardware functionality.

A steerable cutting assembly traverses and lacerates heart valve leaflets using mechanical hooks and electrodes.

Protruding metal clamps anchor shape memory alloy wires to prevent creep and ensure reliable steering control.

Microporous silicone foam enables ion conduction for ECG signals while blocking blood leakage at the closed distal tip.

A thermally resistant balloon coating protects catheter components during laser ablation procedures.

A fluid diverter maintains heated saline contact with electrodes to enable steam cauterization.

A medical delivery device uses a composite liner with reflowed thermoplastic elastomer to resolve durability and lubricity trade-offs.

Sintering thick film conductors reduces porosity to block fluid migration and prevent corrosion in implantable sensors.

An integral plug merges with the light module housing via injection molding, eliminating separate wires and reducing manufacturing costs.

Sealed packaging with vapor-permeable sachets hydrates hydrophilic catheters via phase transition, eliminating liquid spillage during handling.

A light therapy diagnostic device uses a movable optical waveguide and mirrors to redirect illumination within a catheter shaft.

A composite strain relief hard portion increases kink resistance in thin-walled catheters by reinforcing the proximal side against stress concentration.

Dual flexible diaphragms in a bleed valve adjust flow area dynamically, maintaining constant pressure decrease rate for accurate measurement.

Optical topography measures cerebral blood volume changes to estimate vessel hardness.

Segmented guide wire lumen protects the wire from a rotating cutting body, preventing damage during mixed lesion treatment.

An enteral tube assembly with embedded magnets uses a magnetic field generator to track position, eliminating X-ray radiation exposure during placement.

A long-term analyte sensor receives calibration parameters from a short-term sensor to establish accurate baseline readings.

Extruding fine PTFE powder resolves the contradiction between wall thickness and mechanical strength, enabling 350% elongation at break.

A photoplethysmography finger probe extracts pulse wave signals using linear discriminant analysis to identify cerebral artery stenosis severity.

Pass-through electrodes transmit signals through tubular devices, resolving conductor routing complexity and reducing manufacturing costs.

Merging infusion cannulas and sensors into one assembly reduces piercing locations, lowering patient discomfort while maintaining reliable fluid sealing.

Ionic bonding anchors active agents to polymer substrates, eliminating complex coating steps and ensuring sustained release of antimicrobial properties.

Pulsed laser photoacoustic imaging generates ultrasound signals to differentiate necrotic tissue from viable tissue during ablation procedures.

A catheter employs a PTFE barrier layer and slit valve to prevent CO2 diffusion and obstruction formation.