Surgical Needles TRIZ Cases

Attaching an elliptical biopsy punch to a battery-powered driver unit produces rapid oscillations for precise tissue cutting.

A hollow electrode circulates pressurized saline to cool tissue during radiofrequency ablation.

Folded balloon insertion reduces force while inflation seals the body wall, resolving retention versus length trade-offs.

An insertion guide tube with an anti-twist section prevents electrode twisting, ensuring precise perimodiolar placement and reducing insertion stress.

A biopsy device uses variable positioning to move the sampling volume dynamically for precise lesion targeting.

An integrated sensor assembly in the biopsy tool maintains location tracking after guide removal, resolving blind navigation constraints.

A hybrid punch with a flat annular face and sharp edge extracts follicles via oscillatory motion.

Optimized tapering angle and diameter increase rate reduce thrust resistance while enabling consistent manual grinding of elongated sharpened parts.

A pixel array dermatome system fractionally resects skin and fat using a scalpet array with depth control.

Independent needle movement reduces tensile forces on target sites, ensuring accurate placement depth and enhancing cell survival rates.

Collapsible cap petals seal the sheath lumen to prevent tissue entry, resolving the trade-off between contamination protection and device complexity.

Segmentation and extraction principles guide a detachable localization element with radiopaque material to prevent migration during breast cancer surgery.

Intra-articular localizing pin creates virtual pathway to access bone lesions without damaging load-bearing structure.

Concentric vacuum chamber and cutter mechanism reduce procedure time and patient trauma.

A selectively movable valve in a sealing cap releases preservation reagents into a sample collection vessel upon association.

A bone marrow aspiration device uses a trigger mechanism to deliver standardized rapid pulling force across multiple sequential syringe steps.

Multi-member coupling assembly secures flat blade to needle, preventing internal cutter interference and deformation.

A tubular cannula with a movable support member stabilizes heart tissue, preventing wall collapse and kinking that obstructs blood pump flow.

An implantable sensor platform uses wireless optical signals to monitor metabolic levels continuously.

A catheter steering unit adjusts electrical connector alignment via a movable guide, preventing premature tissue heating and reducing thrombi formation risks.

Isolated probes and temperature controllers heat the dermis while protecting the epidermis from collateral damage.

A collapsible tissue collection reservoir adapts its profile for catheter navigation while maintaining storage capacity.

Resilient locking tabs secure the insertable shaft while a rotating brush mechanism extracts cervical tissue for accurate Pap test analysis.

A coaxial biopsy device uses a vacuum mechanism to retain tissue samples within an outer needle featuring a Franseen cutting tip.

A push-activated intraosseous access device uses a pressure-sensitive switch to automatically drive the needle into bone tissue.

A spring-loaded automated tissue coring device creates precise bone holes using a semi-flexible wire mechanism.

A handheld biopsy device integrates a syringe-driven vacuum source and needle actuator for autonomous tissue sampling.

Pressure sensing feedback controls hydrodissection depth, preventing bladder damage and mesh erosion.

An abrading tool with adjustable cutter blades prepares intervertebral disc spaces by mechanically removing cartilage from vertebral endplates.

A compound swab system merges multiple collection tips into one assembly to streamline specimen capture and storage workflows.

A collapsible tubular device expands to capture eosinophil cells from the esophagus wall.