Surgical Needles TRIZ Cases

Automatic voltage adjustment keeps hemorrhoid treatment current steady despite body resistance changes, reducing manual intervention and discomfort.

Flexible couplings and spacers keep the radiating tip at a target axial distance, preserving microwave tissue ablation performance.

A two-layer adhesive fixation approach secures a skin-penetrating cannula while reducing skin irritation and easing single-nurse application.

A movable biopsy probe and independently adjustable immobilizer cut breast needle positioning time while enabling multi-direction X-ray-guided access.

A venous transseptal placement route helps intravascular blood pumps bypass calcified arteries, reduce leakage risk, and support long-term mobility.

A preinstalled sensor module and reusable transmitter simplify CGM skin attachment, reduce user steps, and improve safe single-use handling.

Electrode approximation and RF heating shrink the cardiac valve annulus in a controlled direction, improving valve competency without open surgery.

Transverse flushing in a dual-channel needle creates vortical flow to dislodge oocytes and improve retrieval from fluid-filled sacs.

Feedback-controlled current sensing adjusts probe voltage as body resistance changes, keeping hemorrhoid treatment current steady without manual tuning.

Dual sensors and a controller track lesion and instrument position to guide precise minimally invasive resection despite tissue motion.

Guidance indicators on ablation probes improve alignment with navigation references, enabling more precise placement and less damage to surrounding tissue.

A ramped lateral opening and visual markers guide needle angle for precise sampling of eccentric lung lesions with fewer insertions.

A skin-penetrating microsensor patch and electronics enable continuous multi-analyte monitoring from interstitial fluid with less user burden.

A strained elastic dressing reduces skin stress at injection and infusion sites to limit scarring, stabilize cannulas, and improve insulin absorption.

A shaped blade, tissue articulator, and suction remove septum tissue to create a durable interatrial aperture without a permanent implant.

A handheld trajectory assembly uses parallel actuators to align surgical tools in two degrees of freedom, reducing setup time and OR clutter.

Independently controlled dual loops and movable sheaths help remove necrotic tissue in one session, reducing repeated insertions and procedure time.

A visual tip cue and integrated cutting elements let one endoscopic harvester dissect, seal tributaries, and cut vessels with less injury and delay.

Real-time sagittal ultrasound guidance enables single-site transperineal prostate biopsy with lower infection risk and easier target access.

A spring-loaded needle guard and clamping mechanism automate chip puncture, delivery, and retraction to speed implantation and simplify use.

Radial conductors on an inflatable balloon create a biostable interatrial shunt that limits tissue overgrowth without an implanted stent.

A curved fire-forward needle with catheter suction stabilizes slippery vessels for accurate minimally invasive puncture and stent placement.

Models electric field and tissue heating to predict ablation zones, helping optimize electrode placement and avoid overexposure.

A foldable protective sleeve shields the fixation element during delivery, then collapses to preserve steering and conductive-fluid communication.

A dilator-driven rotating sheath shifts from angled insertion to parallel vessel-wall alignment, reducing force and trauma without axial drift.

A foldable protective sleeve shields the fixation element yet opens for implantation, improving catheter steering and conductive-fluid communication.

Electrical impedance sensing distinguishes fat from muscle in real time, alerting surgeons and stopping injection when the cannula enters dangerous tissue.

Independently rotatable jaws, pulleys, and a blade wire help the end tool match hand or robot motion for more precise electrocautery surgery.

A handle-mounted CO2 canister and valve route refrigerant to the probe tip for rapid tissue freezing with controlled thermal exposure.