Surgical Needles TRIZ Cases

Low-pressure pockets and a sealing member help a vacuum tissue tray retain multiple samples during removal while limiting waste exposure.

A tangential cannula guide enables precise subretinal delivery near the macula while reducing retinal trauma and stretching during insertion.

A dual-lumen cryogenic probe freezes tissue onto a conductive tip, enabling conscious biopsy with less bleeding and larger samples.

Real-time optical sensing checks tissue ahead of resection, helping remove tumors precisely while preserving samples for molecular analysis.

Intermittent impedance signals before and during RF treatment improve tissue monitoring, nerve exploration, and electrode continuity checks.

Independent translational and rotational slider stages align a DBS instrumentation column precisely while improving surgical access and patient comfort.

A biased inner retainer and inverted push-button handle enable one-person device loading, cutting procedure time and contamination risk.

A curved tunneling shaft with a deployable cutter and optical window enables controlled substernal access through scar tissue while reducing organ injury risk.

Dual counter-rotating blades and a specimen chamber collect multiple tissue samples in one pass while reducing crush artifacts and preserving orientation.

A four-body surgical handle separates stationary and roll portions to prevent transmission winding while enabling precise, low-friction unlimited rotation.

An alternating jaw mechanism transfers a double-ended needle automatically, improving suturing precision while reducing prick risk and complexity.

An expandable positioning arm aligns the catheter tip for near-orthogonal vessel wall puncture, reducing axial displacement in curved vessels.

A switchable piercer and access pipe create controlled biliary entry through the digestive tract while minimizing bile leakage during tool delivery.

Real-time force, motion, and orientation sensing helps confirm peritoneal entry and regulate insufflation to reduce visceral injury risk.

A filter membrane and conical collection structure standardize cell block preparation from small samples, reducing loss and improving pathology consistency.

A slider-buckle and elastic reset mechanism inserts the sensor, then retracts the auxiliary needle to simplify use and reduce injury risk.

Dual gimbal drives and independent translation keep a DBS instrument aligned through a burr hole while improving surgical access and patient comfort.

A nested choke and variable-diameter cooling tube limit backward current, enabling spherical ablation zones with less surrounding tissue damage.

A sleeve-based inserter places glucose sensor components under the skin with less pain and more discreet, convenient monitoring.

Elastic lifting bands raise the bag's closed end toward the incision, improving specimen cutting and retraction without damaging the bag.

A sliding joint finder and uneven-protrusion cannula create safer minimally invasive SI joint fusion access while reducing soft tissue trauma.

A braided septal occluder with a penetrable, resealable gasket seals the puncture while preserving repeat trans-septal catheter access.

Remote needle control with real-time imaging improves puncture accuracy and smoothness while reducing radiation exposure for medical staff.

Insulative sleeves, skirts, and finger stops maintain clearance in nsPEF electrodes and connectors to prevent arcing during tumor treatment.

A detachable cover secures multiple swabs in one airtight specimen container, reducing manual removal, kit count, and contamination risk.

A nested temperature sensor inside a neural ablation probe enables real-time heat monitoring and controller-based energy adjustment during ablation.

Helical flaps and offset projections create a passive biopsy cap seal that lets instruments pass while limiting fluid and air leakage.

Transverse needle vibration boosts tissue and fluid sampling with a smaller, portable wave-coupling structure that helps limit patient trauma.

Detachable operating and driving components enter through separate wounds to reduce incision size, ease assembly, and support electrocoagulation.

A pre-evacuated chamber and snap-dome microneedle actuator simplify blood extraction, reducing pain, training needs, and equipment complexity.

Ultra-short high-voltage pulses ablate target tissue with temperature-guided delays, reducing muscle contractions and collateral damage.

Fluid flow through hollow needles lifts fragile tissue columns into a protected liquid path, reducing damage and enabling direct dressing deposition.

MRI-visible markers and an auto-adjusting depth stop improve biopsy needle placement, depth control, and tissue sampling accuracy.

A single conductive tubular element cuts and sizes one incision for drainage device insertion while avoiding multiple cuts and procedural delay.

A nested microneedle, microwire, and drain sheath approach improves pericardial drainage while reducing myocardial trauma and aiding visualization.

A detachable insulated tail tube lets the cryoablation needle stay light during puncture, reducing stress, offset, and frosting.

An axially movable filtering member captures emboli while treatment instruments pass through, helping prevent distal vascular thrombosis.

A bendable introducer and sheath enable off-axis vertebral augmentation through one pedicle, reducing tissue trauma while reaching contralateral areas.

Rotating wipers move severed biopsy tissue into a sample chamber, enabling multiple samples from one insertion with less handling.

Fluorescent dye mapping through interstitial optical fibers defines tumor margins more precisely than MR alone for targeted laser pull-back planning.

Impedance sensing stops the therapy needle at the prostatic capsule, confining vapor ablation to peripheral zone tissue.

A conductive low-friction hull keeps the electrosurgical tip electrically connected while shielding underlying tissue to cut and coagulate with less bleeding.

A nested puncture needle and implant catheter enables single-pass transcatheter delivery, reducing exchange steps, trauma, and procedure time.

A plastic sheathing and clearance-fit electrode reduce heat transfer to the hose, extending plasma probe life and limiting tissue heating.

An MRI-compatible probe uses RF tracking and imaging to examine tissue in situ with deeper visualization than OCT or IVUS.

Real-time probe image registration updates target location in virtual navigation views, improving minimally invasive navigation accuracy.

A hinged distal end expands to capture biological samples, then collapses for withdrawal to preserve purity and limit contamination.

Inflatable toroidal bladders and slipping tracks let a capsule adapt to GI tract shape, move controllably, and open folds for better polyp imaging.

A movable gripper and saline branch let endoscopic tools be positioned precisely and exchanged faster during treatment.

Sequential electrode switching improves fractional RF skin heating by reducing pain and stabilizing energy delivery despite tissue impedance variation.