Surgical Needles TRIZ Cases

A stiff proximal section and flexible distal section help a pulmonary biopsy needle reach peripheral lung nodules while preserving sample size.

Integrated accelerometers and gyroscopes give surgeons real-time orientation feedback to improve handheld instrument alignment and trajectory.

A filter-free capillary and valved bulb reservoir speed whole-blood collection, then mix buffer or reagent for easy on-site sample dispensing.

A transverse flushing outlet creates vortical flow in the sac, helping aspiration reach more biological material and improve retrieval rates.

Pressure-driven staining pushes processing fluid through 3D biopsy tissue to cut staining time, preserve structure, and improve uniformity.

Embedded tissue and instrument sensors track motion and deformation to guide precise resection margins and reduce incomplete lesion removal.

An independently movable cincher tube isolates the snare from the torque shaft to prevent abrasion during leadless pacemaker retrieval.

Separate gas and agent lumens enable distal atomization and seal-controlled flow for more uniform coating of rough endoscopic treatment sites.

A movable temperature regulator circulates coolant at the cannula entry point to limit skin heating during microwave ablation.

A retractable puncture element with blade tip creates a coronary sinus-to-left atrium shunt while limiting tissue damage and embolization risk.

A cam-actuated trigger keeps biopsy forceps aligned during rotation, preventing blocking and easing tissue sampling in confined cavities.

Multiple radial cutting edges and curved tip geometry lower penetration force and tissue displacement for precise small-tumor ablation.

Impedance-guided electrode motion and AC/DC current control tailor skin ablation or coagulation to local tissue properties.

A multi-prong needle with MIR fluoride fibers combines drug delivery and laser ablation to target lesions precisely while reducing side effects.

An integrated coronary sinus shunt delivery catheter combines puncture and implant placement to cut exchanges, trauma, and procedure time.

A rotatable external element and cam trigger prevent biopsy forceps blocking while allowing easy orientation adjustment in confined cavities.

Direct visualization and a deployable cutter help create a sub-sternal tunnel through scar tissue while lowering organ injury risk.

Multiplex real-time PCR and solid-support hybridization identify high-risk HPV genotypes from self-collected samples with automated accuracy.

Flexural vibration with transmitted and reflected power sensing lowers biopsy force while limiting tissue damage and sample disruption.

A polyurethane-compatible adhesive and detachable sheath protect the protruding catheter while allowing repositioning and skin-safe access.

A curved magazine, symmetric tip, and pneumatic damping help a biopsy needle cut straighter, fire quietly, and operate with one hand.

A hollow spherical tissue marker expands after implantation to stay in place under tissue pressure while remaining visible across imaging methods.

A beveled microprobe steers through soft tissue without guide tubes, reducing insertion trauma, buckling risk, and glial scarring.

Machine learning plans a CT-guided needle path and insertion window from breath signals to improve placement accuracy and reduce radiation.

Real-time electromagnetic sensors and ultrasound fusion guide needle trajectory, improving puncture and biopsy placement accuracy.

A single actuator controller sequentially engages two electrode actuators to simplify precise placement and locking during ablative treatment.

Customizable internal weights shift handpiece balance to prevent back push during deep needle insertion while reducing wrist and shoulder strain.

Real-time OCT guidance and a multi-DOF needle tip enable precise biopsy targeting in hard-to-access luminal tissue while reducing device exchanges.

A pinching cannula and rotating inner shaver enable precise ligamentum flavum removal through a smaller incision with less tissue damage.

A conductive tip creates a heart tissue puncture while the insulated shaft limits current leakage and keeps the hollow needle from coring tissue.

A sliding wire tether secures a leadless implant during catheter delivery, then retracts for controlled release with fewer attachment complications.

Diathermy biopsy jaws, anesthesia delivery, and a sealed cup enable repeated endoscopic sampling with hemostasis and less tissue damage.

A detachable breathable sheath uses polyurethane-compatible adhesive to protect catheter sections while allowing repositioning and easier access.

A spring-driven gear train links cannula withdrawal to sealant delivery, filling the biopsy tract to reduce pneumothorax without over-dispensing.

A rotatable stylet hub lets the stylet disengage for independent proximal movement, enabling both single and multiple biopsy sampling modes.

A swelling hydrogel seals the GI sampling aperture after fluid uptake, preserving microbial and protein samples without invasive retrieval.

Real-time force, orientation, and depth sensing guides laparoscopic entry and insufflation control to reduce tissue damage and access complications.

A flexible positioning arm and opposed catheter opening enable near-orthogonal vessel wall puncture with less miss risk in curved vessels.

A curved fiber tip broadens photoacoustic wave emission from a puncture needle insert, improving tip detection sensitivity and reducing artifacts.

A threaded knob regulator enables precise smoke suction adjustment, preserving pneumoperitoneum stability and visibility in low-light surgery.

Microneedle-guided light with conformal reflective surfaces improves deep tissue photodynamic therapy while limiting harmful surface irradiation.

Multiplex real-time PCR plus solid-support hybridization identifies cancer-linked HPV genotypes with automated processing and self-sampling support.

Magnetic coupling adjusts focus through a sealed endoscope housing, preventing autoclave moisture fogging and limiting optical runout.

A deployable curved cannula guides treatment through vertebral bone to reach the basivertebral nerve despite density variation.

Magnetic coupling transfers axial motion and torque across a sterile barrier, simplifying robotic neurovascular setup while preserving sterility.

Concentric multi-lumen probe walls improve dielectric strength and gas flow while keeping argon plasma coagulation probes slim and flexible.

Spatially distributed neuromuscular inhibitor dosing suppresses heterotopic ossification while limiting muscle atrophy and bone loss.

Focused cryotherapy freezes stellate ganglion nerves to create months-long sympathetic blockade and reduce ventricular arrhythmias.

A multi-leg snare catheter secures leadless pacemakers during delivery and retrieval, reducing spontaneous release, tissue trauma, and procedure burden.

A cannula-delivered clip closes a vein mechanically, avoiding thermal ablation pain and bruising while reducing procedural trauma.