Surgical Needles TRIZ Cases

A biopsy tissue cutting member features a flared distal section with circumferential openings to maintain vacuum pressure during specimen retrieval.

A phase-angle measurement circuit regulates RF power to a cutting filament, maintaining uniform power density despite tissue impedance fluctuations.

A biopsy instrument uses a dual-wheel rotational mechanism to load stylets and cannulas.

A wire cutter device creates bone cavities using a protruding elastic wire.

A catheter-based marking device deposits durable markers on biological tissue surfaces using an absorbent tip and retractable sheath.

A protective sheath retracts a conductive needle tip to prevent accidental tissue damage during minimally invasive procedures.

Anchoring blades stabilize the biopsy catheter in complex airways, enabling precise tissue sampling without requiring larger bronchoscope equipment.

Self-adjusting rollers on a lateral arm carriage secure the device against slippage while maintaining precise needle positioning for breast biopsies.

Intermediate CT imaging of partially advanced distal portions reduces malposition risks and procedural complexity compared to deep advancement methods.

A rhenium tungsten wire with 10 to 30 mass % rhenium achieves high tensile strength through solution strengthening.

An integrated IV dressing uses a hinged foam pad to relieve skin pressure and prevent bruising while securing the catheter via adhesive.

Retrograde heating stiffens the endo-pelvic fascia, avoiding invasive abdominal incisions.

A blow molded vial integrates a breakaway tip to dispense reagents and samples from a single unit.

A glucose sensor electronics device measures open circuit potential between electrodes to determine hydration status before power application.

Elongate member with segmented radiopaque markers provides visual reference under fluoroscopy.

A single-pass suture needle forms a C-shape to approximate wound edges through dermis and subcutaneous fat layers.

Segmented stylet with inward-facing barbs captures intact tissue cores in a single pass, eliminating false negatives from disaggregated cells.

A subcutaneous access device uses an adhesive skin attachment plate to pull tissue against fixed needles for simultaneous penetration.

Resilient separation prevention device deflects inwardly for insertion and biases outwardly to engage catheter lumens.

A biopsy obturator features a sealed distal tip to prevent blood backflow into the lumen during insertion.

A helically shaped diffuser enhances light distribution and coolant flow, reducing carbonization barriers to increase ablation volumes.

Adjustable tines conform to irregular tissue geometry, preventing collateral damage from unpredictable ablation zones.

A computational system determines optimal transseptal needle curvature from patient anatomy.

Rotating a third member moves a second retaining member to adjust piercing depth, resolving safety and versatility trade-offs.

A brain interaction apparatus uses filaments with tapered steering tips for precise placement and therapeutic delivery.

A shape-memory alloy guide tube adapts to surgical positions and reverts to a straight form upon heating, enabling reliable sterilization.

A medical instrument integrates an RF transmitter to enable real-time electromagnetic tracking of its position during minimally invasive procedures.

Segmented cutting edges reduce contact area, preventing tissue slipping and easing manipulation.

Progressive die stamping reduces manufacturing costs for high flow insufflation needle stylets while maintaining structural integrity.

Flexible anchorages bend to secure fragile bone frustules during extraction, preventing sample loss while enabling simultaneous marrow aspiration.

Segmented delivery catheter and scrotal prosthesis enable minimally invasive ovarian tissue reimplantation, reducing surgical risks and hospitalization time.

Real-time impedance monitoring during electroporation resolves unpredictable outcomes from variable tissue properties by dynamically adjusting pulse parameters.

Segmented RF electrodes with retractable tips resolve the trade-off between precise dissection and collateral thermal damage.

A tissue collection apparatus uses vacuum pressure to load a biocompatible scaffold with harvested fat pad cells.

Segmented flexible coiled cannula transmits torque to rotate a distal tip, preventing cortical wall puncture during bone marrow harvesting.

A swallowable cytosponge collects oesophageal cells into a cohesive cluster for H&E staining analysis.

An electrostatic guide system directs charged hemostat material to target tissue using applied electrical charges.

A feeding tube assembly integrates a rigid and bending axis imaging component marked to indicate orientation for navigation.

Segmented handle design with flared grip prevents needle backout during bone penetration, ensuring reliable fluid delivery.

A biopsy needle uses a tip labelling portion to create radiation absorption contrast for position detection without radioactive isotopes.

Pulsed microwave delivery minimizes bleeding and tissue damage during ablation in moving organs.

Metal swinging rod element prevents plastic deformation and heat buildup while maintaining needle alignment during operation.

A modular tunneler instrument uses a removably coupled clamp and tip to enable customizable assembly for vascular graft placement.

Nested introducer tools create angled subcutaneous tunnels via ultrasonic transducers, reducing incisions and infection risk.

A medical suture needle bending method positions the needle point near the shaft center extension line using a roller and belt assembly.

A multifunctional electrosurgical instrument integrates a fluid cannula and cutting electrode within a dynamic assembly for simultaneous tissue injection and resection.

Segmentation separates the disposable sensor kit from the reusable transmitter, reducing patient costs and environmental waste.

A prism redirects laser energy laterally from a small-diameter fiber, expanding the treated tissue area without increasing mucosa damage.

A graphical interface with distinct icons guides needle rotation and firing, reducing operator error during stereotactic procedures.