Surgical Needles TRIZ Cases
- Multi-Layer Surgical Needle Coatings for Lubricity and Durability
A primer, base, and lubricious top coating help surgical needles keep low tissue penetration force while resisting wear over repeated passes.
- Chemically Etched Rounded Needle Edges Without Hardness Loss
Chemical etching forms rounded surgical needle edges without mechanical sharpening, preserving hardness, enabling complex profiles, and reducing tissue trauma.
- Spinal Needle Bending Assembly for Precise Adjustable Angles
A fulcrum and barrier wall bend spinal needles to predictable angles, improving repeatability while reducing needlestick risk and tool use.
- Ratcheting Rotational Drive for High-Resistance Medical Instrument Oscillation
A ratcheting drive lets elongated medical instruments oscillate at low resistance while resetting the actuator when high resistance blocks reverse rotation.
- Programmable Swaging Press Control for Needle-Suture Attachment
Load-cell feedback and servomotor control improve swaging force and displacement precision to prevent needle cracking and weak suture attachment.
- Cross-Slit Gasket Structure for Leak-Safe Introducer Sheaths
Opposing slit geometry in a single-piece gasket seals different interventional device diameters while reducing leakage and insertion friction.
- High-Voltage Catheter Insulation for Sub-Microsecond Pulse Delivery
Concentric conductive layers and flexible insulation help high-voltage catheters deliver sub-microsecond pulses while reducing arcing and tissue injury.
- Insulated High-Voltage Catheter Layout to Prevent Pulse Arcing
Flexible coaxial catheter layers and insulating regions deliver sub-microsecond high-voltage pulses while reducing arcing and tissue damage.
- Insulated High-Voltage Catheters to Prevent Arcing in Tissue Pulsing
Retractable electrodes and insulating layers let flexible catheters deliver sub-microsecond high-voltage pulses while limiting arcing and tissue damage.
- Pulse Switch Isolation Circuit for Synchronous High-Voltage Pulses
Photoelectric drive isolation and magnetic power isolation help multiple pulse switches synchronize during high-voltage switching.
- Pulse Switch Circuit Isolation for Synchronous High-Voltage Pulses
Photoelectric drive isolation and magnetic power isolation improve multi-switch synchronization and response speed in high-voltage pulse generation.
- Coaxial High-Voltage Catheters to Prevent Arcing During Fast Pulsing
Retractable electrodes and insulating regions let coaxial catheters deliver sub-microsecond high-voltage pulses while limiting arcing and tissue damage.