Surgical Needles TRIZ Cases

Internal ribs secure the implant while vent holes relieve fluid pressure during withdrawal, preventing ejection.

Segmented hinges and a translating inner element adjust local rigidity, resolving the trade-off between adaptability and control precision during insertion.

Electrodes and optical fibers on the needle tip detect tissue type via impedance and absorption, preventing vessel rupture.

A rotatable handle adjusts and fixes a wedge-shaped needle guide to simplify surgical handling.

Segmented linear antenna arrays deliver precise microwave energy to treat larger tissue regions while minimizing invasive feedline requirements.

Segmented biopsy cannula combines powered cortical penetration with manual coring to preserve sample structural integrity during extraction.

A restrictor in the aspiration port creates a seal between the syringe and needle slider to block solid biological samples.

A capture hypotube and cutting arm detach interventional implants from cardiac valves.

A hollow guide restricts biopsy device movement on mucous surfaces, preventing slippage and ensuring accurate tissue sampling.

Segmented shaft design allows sharp distal tip to puncture tissue while proximal handle maintains control, avoiding transvenous vascular access challenges.

A flexible sheath needle uses a force translator to expel the distal tip into target tissue.

A surgical robotic system uses an imaging-guided control loop to adjust injection parameters during cement dispensing.

Coaxial electromagnetic tissue ablation device integrates gas cooling and steerable navigation for precise targeting.

Contrasting color portions visible through a handle opening confirm the armed state and sample size, eliminating user errors from unverified settings.

Segmented needle shaft with compression spring adjusts bending stiffness to prevent buckling during soft tissue navigation.

A variable angle guide plug holder adjusts insertion angles to align interventional devices precisely.

A multi-electrode needle records electrical activity from multiple muscle fiber locations simultaneously.

Three-way valve redirects pressure to recharge the syringe while maintaining suction at the catheter tip, preventing tissue sample expulsion.

Switchable locking mechanisms fix mandrels against abutment positions, resolving reliability and complexity trade-offs in delivery systems.

Decoupled drivers in this sampling tool enable rapid tissue piercing while biasing mechanisms prevent animal damage during retreat.

A microwave ablation probe uses a helical and linear antenna to create controlled electromagnetic fields.

An integrated tissue harvesting needle combines a mincing mechanism with a fluid reservoir to mix processed specimens for direct delivery.

An electrosurgical system analyzes reflected signals to determine tissue desiccation rate, reducing thermal spread damage during procedures.

A medical needle with a retaining chamber enables precise fluid administration and collection through geometric design.

A toothbrush integrates a sample collection member to gather biological specimens directly from the oral cavity.

Automated image processing identifies biopsy needle tips in real-time ultrasound video to eliminate manual operator-dependent documentation errors.

A biopsy needle uses a tapered tissue excision cutter and a proximal slit to draw in biological samples.

An integrated seeker and dilator system uses a shape-changing elastic distal portion to access sinus ostiums, reducing procedural complexity.

A hair transplant device combines coring and splitting needles to extract follicles and create recipient openings in a single unit.

Molded second sheet material creates a gap that prevents adhesive contact with package surfaces.

Elastomeric edges on a biopsy guide cube deform to grip grid plate openings, preventing device displacement during procedures.

Curved cutting edges on the distal tip enable precise tissue access while removing electrosurgical components to ensure MRI compatibility.

Automated 3D annotation system tracks medical device pose to generate spatial markers, reducing surgeon time during image-guided procedures.

An electrode array measures electrical impedance to detect cancer cells and predict recurrence in excised tissue samples.

A cannula-based harvesting tool uses a rotating upper jaw and lower gouge to excise cartilage fragments.

A shape memory orthopedic implant transitions to fixate bone while delivering augmentation material through internal cannulations.

Laser piotomy ablates the pia mater to eliminate dimpling and reduce insertion force for brain electrodes.

A dual energy-emitting needle forms and enlarges puncture holes through biological tissue using selective radio-frequency emission.

Heat-shrinkable tubing forms a continuous insulating layer at the electrosurgical generator hub, preventing tissue burns from current leakage.

A specimen holder integrates a wireless transponder into its cavity to enable reliable identification of biological samples.

A single spring drives both needle and tube units through a detachable lock, reducing structural complexity in biopsy devices.

An ultrasonic punching device forms non-rotationally symmetric bone recesses to eliminate multiple screws and reduce surgical complexity.

A rotary cannula biopsy device uses a crown gear system to propel cutting components.

Universal guide system enables temporary tendon fixation via cannulated screws, eliminating dedicated implants and improving surgical visibility.

An integrated cannula and RF electrode system uses a deployment mechanism to extend the distal portion of the electrode for precise positioning.

Asymmetric electrodes control energy distribution to fuse tissue while preventing thrombus attachment during medical procedures.

Segmented feeding paths with asymmetric slot positioning maintain concentrated SAR patterns while cooling structures reduce shaft thermal conduction.

A medical device uses temperature monitoring to control tissue ablation volume during energy delivery.

A flat spring connects a pressing device to a guide member, enabling elastic deformation and constant force application during swab insertion.