Surgical Needles TRIZ Cases

A liquid-resistant dressing uses concentric adhesive strips separated by gaps to maintain a secure seal while allowing visual skin inspection.

Directional rails constrain drug pellet movement within the cartridge channel, preventing misdirection and jamming during delivery.

Segmenting the trigger button and positioning a safety sleeve closer to the tip shortens exposed needle length, reducing bending in fine-gauge needles.

Sealable unit protects samples from contamination during transport to improve HPV analysis reliability.

Buoyancy-modified drug carriers respond to ultrasonic energy, creating acoustic streaming that overcomes slow mixing in cystic fluids.

A dual-layer adhesive patch embeds detector compounds to analyze sweat while wicking moisture away from skin.

An optical emitter within the calyx enables precise needle alignment, reducing procedure time and radiation exposure.

Elastic blade retaining elements provide secure needle positioning in tissue sampling devices.

A catheter fixation device uses a retaining support with an adhesive strip featuring a non-adhesive central region for secure skin attachment.

An integrated endoscopic instrument combines cutting and aspiration functions to reduce procedure time while maintaining reliable polyp removal.

A double-sided needle groove integrates fixed and adjustable slots to support various needle diameters in ultrasound procedures.

A trigger lever drives a pinion-rack mechanism to position electrodes, resolving the trade-off between precise deployment control and device complexity.

Proximal collection chamber prevents drive shaft obstruction during cutting, enabling safe removal of plaque from chronic total occlusions.

Segmenting the trocar from the needle solves spinning on hard bone, while extraction principles isolate debris to maintain lumen purity.

Fluid pressure expands a collapsible chamber to pull the needle back into a pierceable barrier, eliminating manual removal risks.

Segmenting the inner stylet into proximal and distal portions preserves rigidity while deep notches capture larger, symmetrical tissue cores.

Flared electrode profiles increase column strength to prevent buckling during asymmetric lesion creation.

Pre-contoured polyurethane matrices with silver nitrate mesh eliminate sealing failures on heels and sacral regions while enabling portable wound care.

A hydrophilic electrode absorbs conductive liquid to create a path for radiofrequency energy delivery through a cannula.

A pre-curved hollow needle navigates around bones and sensitive organs, enabling safe biopsy access to previously unreachable targets.

Skin-mounted dynamic reference frames enable non-invasive registration of image space to physical anatomy, avoiding bone penetration.

Recessed bottom paths in the collection basket direct fluid to the jar outlet, reducing inlet obstruction risk during suction filtration.

An abrasive fabric head collects biopsy samples via friction while minimizing tissue trauma and patient pain.

A flexible transparent needle system navigates curved anatomical pathways while embedded sensors monitor fluid flow and trajectory in real time.

A planning module updates view plane slices as a user-controlled cursor navigates a pathway system.

A high-frequency surgery device uses a parallel resonant circuit to measure neutral electrode impedance via galvanically separated measurement signals.

A biopsy cutter tube uses a flexible partoff tab to secure tissue samples during acquisition.

Segmented cooling prevents tissue charring while an external sensor monitors the heat affected zone for accurate temperature control.

Threaded connections between the cannula and tip prevent detachment under mechanical stress during insertion, ensuring reliable operation.

A unitary endoscopic vessel harvesting device integrates dissection, sealing, and cutting functions within a single elongated body.

A medical guidance apparatus positions needles accurately by attaching a detachable arc guide to a stable base, resolving stiffness versus access trade-offs.

Segmented expansion and closure mechanisms secure tissue engagement while preventing post-operative leakage risks during full thickness resection.

Variable leg thickness distributes compressive force evenly along the staple length, resolving uneven compression patterns that cause bone fragment separation.

Composite mallet heads with radiolucent lateral portions enable real-time fluoroscopic needle monitoring while maintaining striking force.

A detachable handle segment allows uncoupling the proximal grip from the distal cannula to enable precise angle adjustments.

Embedded RFID tags prevent sample tampering by linking identity data to tissue specimens via electromagnetic communication.

A two-step silicone coating process for surgical needles using partial curing and mechanical separation.

Radial projections on a swab core increase surface area to collect more biological samples, addressing supply shortages by improving per-unit efficiency.

A surgical shaver uses a rotating cutting member and integrated navigation sensor for precise tissue removal.

Segmented disposable work elements paired with a reusable outer sheath resolve the contradiction between single-insertion productivity and device complexity.

A transesophageal catheter delivers carbon dioxide to form a thermal barrier, preventing esophageal injury and fistula formation during left atrial ablation.

Interference members on nested tubes prevent longitudinal separation, maintaining device integrity for single-use applications.

A tissue retrieval device uses a pressure-applying mechanism to bias a separator against sample tissue for collection.

Dynamic balloon compression targets specific vessels, preventing limb ischemia while controlling bleeding.

Permanently embedding optical fibers within hollow spikes prevents fiber migration during insertion, ensuring precise laser delivery to target tissues.

Mechanical angle guidance reduces radiation exposure and procedure time during CT biopsies.

A visualization stylet with an electronic photodetector chip illuminates tissue during needle insertion.