Surgical Needles TRIZ Cases

Separate guide paths collect condensed moisture before filtration, preserving gas-cleaning performance during laparoscopic surgery.

A coaxial biopsy needle locks and translates for precise dense-tissue sampling.

A pre-shaped stylet supports anatomical conformity and continuous cryoablation lesions for durable pulmonary vein isolation.

A releasable coupler guides and retracts the needle while reusable housing supports repeated transcutaneous sensor insertions.

Staged barb deployment helps prevent jamming and secures hernia mesh with fewer absorbable tacks during repair.

A manual driver, sliding protective shield, and sternal locator enable rapid intraosseous access while limiting sharp-tip injury risk.

Integrated tip imaging and lighting simplify disposable vessel harvesting and sterile handling.

A dual-stage Cartesian robot tracks respiratory liver motion and guides accurate needle insertion for radiofrequency ablation.

A cutting tube, penetration rod, and rotatable central knife create compact biopsy operation while stops maintain alignment and correct use.

A constrained spring applicator coordinates sensor insertion, needle withdrawal, and transmitter engagement for reproducible placement.

This case uses releasable lid features to hold prosthetic heart valves during shipping while accommodating different sizes.

Multiple injection elements and vacuum positioning enable rapid, precise GI tissue expansion while creating a protective safety volume.

A sealed chamber and deformable absorbent member control specimen volume, prevent backflow, and support portable testing.

This biosensor inserter separates the contaminated trocar holder for disposal, allowing the remaining components to be recycled or reused.

A compressible handle and tensioned diaphragm help the retractor conform to irregular orbital walls while limiting tissue obstruction.

Controlled electric fields induce electroporation to destroy lesions while preserving the surrounding cellular matrix and fertility.

This case uses real-time blood backflow detection to control needle position, improving automated vascular puncture accuracy.

A bendable trocar curves around anatomy while its constriction mechanism stabilizes the endoscope.

A releasable tracker uses symmetric markers and a stopper to support precise navigation without forcing surgeons to change familiar tools.

Coronary sinus leadlets help a leadless implantable device pace the right atrium and left ventricle while simplifying implantation.

This case combines a perineum positioning device, MR receive coil, and fiducial array to align MRI images with biopsy templates.

Hexagonal electrode spacing adds neighbors for more precise bioelectrical path sensing.

A sensor-guided catheter and needle use electromagnetic tracking for precise 3D positioning during sinus procedures.

A nested conductive needle and sleeve create uniform fields, while a movable insulation sleeve adjusts ablation length.

Supported needle guides stabilize vessel-wall access while electrodes monitor nerve activity before and after perivascular ablation.

pH-triggered tubing enables targeted GI sampling while limiting dead volume.

Asymmetric helical-linear antennas shape predictable ablation volumes and limit tissue damage.

A segmented channel and ejector mechanism secure the intraosseous device while pushing biological samples through the cannula.

An internal obturator sensor and angled adapter support electromagnetic tracking while reducing protrusion and attachment shifts.

A pressure meter and processor stop air feeding after CO2 reaches a threshold, limiting excess gas during endoscopy.

Frictional loops collect representative epithelial samples while disrupting pathogen-containing cells to support immune response induction.

This endoscopic smoke regulator adjusts negative pressure to remove smoke without collapsing the pneumoperitoneum.

A nested swab, vial, and cartridge use one-way retraction to simplify collection and processing while limiting contamination.

A cylindrical lens and tunable focus unit create an axially adjustable light sheet for fast, high-resolution tissue imaging.

Image registration combines CBCT with pre-procedural scans and field simulation for real-time needle adjustment during ablation.

Ultrasound-guided fluid isolation moves the median nerve before a needle dissects the TCL, reducing scarring and recovery burden.

A slidable hub deploys a helical stabilizing wire through the needle aperture, reducing manual effort and needle dislodgement.

A prostatic urethra cutter stabilizes target tissue and makes localized incisions to relieve BPH obstruction while limiting tissue damage.

A sheath-guided medical inserter positions analyte sensors with less manual manipulation, supporting frequent glucose monitoring.

A controlled air reservoir and plunger limit vented air, easing negative pressure during efficient bone marrow aspiration.

Sensing tips monitor electrophysiological activity during sympathectomy, helping target nerve ablation and limit collateral tissue damage.

A curved rail and sliding needle guide support precise positioning while simplifying assembly and reducing biopsy module assembly time.

This case separates fragrance delivery from the collection tip to stimulate saliva without contaminating biological samples.

Imaging-guided excision removes thickened ligamentum flavum while dural sac compression helps protect the spinal cord.

A catheter-delivered docking device adapts circular prosthetic valves to the non-circular mitral annulus, limiting dislodgment and leaks.

This case combines a sharp, flexible access sheath and dilating sheath for controlled EUS-guided duct drainage.

A steerable catheter, translational handle, and needle enable non-papillary guidewire placement across biliary or pancreatic strictures.

This case shows how a flexible, rib-reinforced biopsy cap balances instrument passage with leakage prevention in an endoscope channel.

A movable portion changes needle clamping force, stabilizing a medical device during insertion and preventing catching during removal.

Separate actuators and shrouding control selectively position and lock electrodes, supporting precise ablative electrical treatment.