Excision Instruments TRIZ Cases

A discectomy instrument uses a rotary scraper to remove spinal disc nucleus portions through mechanical torque transmission.

A rotary cutter assembly uses a deflecting member to navigate tortuous anatomy and remove occlusive material.

A self-expanding coring portion cores vascular thrombus while a braided net captures the separated clot material for removal.

Electrodes create plasma arcs that produce shockwaves to crack calcified lesions, preventing vessel trauma from high-pressure expansion.

Nested guide wires and inner tubes enable independent steering of the device, adapting the basket diameter to varying vein sizes for safe valve removal.

A linear trigger handle assembly translates parallel to the central axis to distribute force, reducing user fatigue during prolonged hysteroscopic procedures.

A rotational driver modulates drive shaft speed and direction to reduce friction during atherectomy procedures.

Segmented scoring cage fractures stenotic deposits symmetrically while enabling rapid balloon deflation to minimize treatment time.

Variable pitch helical channels adjust inner member speed to optimize tissue cutting and debris removal efficiency.

A rotating screw mechanism conveys thrombi proximally through a catheter lumen, preventing maceration and fragmentation during retrieval.

Tube and wire loops form an aperture to dissect plaque, preventing embolization risks from residual material.

Bearings along a flexible inner shaft reduce actuator load and vibration by minimizing friction between the inner and outer tubes.

Integrated aspiration system removes small particles during atherectomy to prevent restenosis and intimal hyperplasia from residual debris.

Retractable cutting elements lacerate obstructive leaflets while an expandable basket captures debris, preventing coronary blockage during repeat interventions.

Tilting the snare wire loop transverse to the sheath axis enables effective lesion excision when the tool is angled near a right angle.

An inner heat shield prevents hot saline from burning non-target tissue during combined shaver and RF procedures.

Segmented atherectomy device resolves sheath size versus trauma trade-off by routing debris proximally through integrated suction.

An aspiration catheter reaches the concave portion of a deformable basket filter to remove collected debris, preventing scattering during vascular treatment.

Nested coil fasteners expand to secure tissues through necrosis, preventing leakage in minimally invasive anastomosis.