Surgical Needles TRIZ Cases

Segmenting the stylet into rigid proximal and flexible distal portions reduces removal force along tortuous paths while maintaining columnar strength.

A sinusoidal voltage signal drives an electrosurgical instrument to produce cutting plasma for tissue vaporization.

A biopsy driver control circuit conserves battery power by managing electrical supply to drive components based on physical movement detection.

A standing spacket diagnostic test system uses biodegradable materials for sample collection.

Lead screw mechanism converts rotation to linear motion, generating high compressive forces while maintaining drive shaft versatility.

A surgical assembly uses a blunt obturator to elevate depressed bone fragments within a joint.

Radiopaque markings on a surgical tool improve X-ray visibility, resolving detection difficulties during minimally invasive bone access.

A rigid casing with a flexible membrane secures medical devices, preventing compression and infection while allowing visual inspection.

A textured footplate grips tissue via friction and vacuum, preventing slippage during cutting.

Tuning elements constrain microwave energy into spherical ablation volumes, reducing impedance mismatch and heating effects.

A tungsten carbide nickel matrix surgical article provides biocompatibility and enhanced cutting properties.

A computational system evaluates needle trajectories using volumetric image segmentation and rule-based ranking to identify optimal insertion paths.

Segmented monopolar electrode needles with distinct impedance zones shape spherical ablation fields, preventing ellipsoid damage to surrounding normal tissue.

Laser-cut beaks and tendons enable efficient retrieval of solid, liquid, and semi-solid tissue samples during a single insertion.

A perineal prostate biopsy apparatus uses a reorientable coaxial needle to collect tissue samples through a single puncture site.

Integrating pneumatic channels and electronics on a single circuit board eliminates manual assembly errors and reduces manufacturing costs by 70%.

A medical instrument uses a pivoting link and advancing rod to deploy a scraping surface from a narrow insertion tube.

Progressive teeth on deployable forceps jaws pierce hard pancreatic walls, enabling precise histological sampling without repeated needle passes.

A control mechanism locks primary and secondary electrode actuators to prevent conflicting movements during medical device insertion.

Compressible foam replaces incompressible liquid to eliminate drape leakage and reduce expensive fluid wastage during negative pressure therapy.

Modular electrosurgical generator adjusts relative waveform phase to minimize constructive interference and harmful emissions.

Replacing bulky electric pumps, the device employs a flexible membrane mechanism to maintain therapeutic suction levels and improve patient mobility.

A manipulation main body adjusts sheath protrusion length and rotates the treatment portion for precise tissue sampling.

A biaxial controller and camera system provide tactile feedback and visual guidance for surgical tool manipulation.

A self-expanding anchor secures an endovascular delivery device in the dural venous sinus to bypass invasive skull penetration risks.

A tissue cutting cannula employs a semi-solid seal in the annular space to prevent clogging from air and fluid artifacts during neurosurgical aspiration.

Segmented sensors and computer processing resolve the contradiction between instrument flexibility and precise distal tip tracking accuracy.

A medical snare uses a wheel and auxiliary pusher to rotate the loop expansion direction independently of the main device body.

Segmented tubular members resolve the flexibility versus torque transmission trade-off in tortuous anatomical paths.

A control module interface uses piezo motors and mechanical cables to transmit rotational motion for MRI biopsy devices.

Segmented electrode activation reduces tissue pain and impedance variations while maintaining uniform current distribution across the treatment area.

Pulsed electric field permeabilizes cell membranes to extract intracellular materials, overcoming insufficient sample volume in conventional biopsies.

An augmented reality system overlays a virtual 3D heart model to guide transseptal puncture selection.

Corrugated irrigation path walls increase heat exchange surface area, reducing antenna temperature rise and mechanical strain during microwave tissue ablation.

A needle electrode uses a displaceable cover to shield the tip.

A microwave spacer with an arcuate slot aligns multiple energy delivery devices to prevent electromagnetic field interference during tissue ablation.

Capillary wettable tips maintain liquid menisci for reliable gripping, solving end effector drying issues in microrobot systems.

Articulable beaks core tissue while a nested transport assembly moves samples, reducing trauma from repeated insertions.

A spring-loaded cylindrical blade advances and rotates to extract tissue samples automatically.

A surgical piercing tool uses a movable component to expand radially and fill an internal bladder for secure positioning.

Segmented probe tip maintains stationary ablation center and controls power density to prevent asymmetric tissue damage.

A sample collection apparatus uses a coupling and release mechanism to detach the device from the cap.

Rotating biopsy needles harvest larger samples while bioimpedance guidance prevents bleeding complications.

Segmenting the activation into two switches prevents fluid-triggered errors while avoiding complex physical sealing of the control system.

Impedance detection guides device placement through tunica media and intima, resolving uncertainty in chronic total occlusion treatment.

Electroporation replaces thermal laser energy to remove tattoos without scarring, pain, or toxic absorption.

Orienting catheter navigates subintimal space to bypass occlusions, reducing vessel perforation risk during chronic total occlusion treatment.

A shape memory anchor secures medical implants to heart tissue via radial projection.

A microwave antenna array illuminates body tissues and detects scattered signals from a biopsy needle to determine its position.

Movable safety shield mediates between sharp tip and tissue to prevent unintentional puncture while maintaining insertion efficiency.