Surgical Needles TRIZ Cases

Foot pedals transmit surgeon commands to RF generators, maintaining sterile field integrity during procedures.

Biochip catheter analyzes clot morphology in real-time to guide thrombolytic agent selection.

A steerable mandrel uses a sliding movable part to induce bending in a stationary sleeve, enabling continuous curvature adjustment.

A delivery pusher uses two elongate members to transition a retention mechanism from locked to unlocked for controlled micro-coil release.

Vacuum suction pulls skin against the treatment head to ensure uniform needle depth, preventing coagulation and microhemorrhage during RF therapy.

Cam-actuated locking mechanisms secure the carriage on the lateral arm to resolve contradictions between measurement precision and device complexity.

Fiber Bragg Gratings mitigate twist-induced errors in shape sensing, enabling precise absolute three-dimensional measurements for minimally invasive surgery.

A scissor-like instrument with a curved ramp guides chest drainage tubes into the pleural space for precise placement.

A hollow inner conductor routes sensor wires to the distal tip of a microwave ablation probe for precise temperature and positioning monitoring.

Segmented cutting edges on the needle tip increase surface area to collect intact tissue cores from fibrous tissues.

Segmenting pulses into nanosecond and millisecond sequences expands the ablation range while reducing muscle contractions.

A bundling apparatus maintains a retrieval string in a compact configuration to prevent gag reflexes during swallowing of cell collection devices.

A cannulated bone screw with a plunger-controlled valve system delivers therapy through the distal end.

A medical snare device uses a rotating body to guide the noose along precise paths for accurate polyp removal.

Segmented needle holders resolve interference during multi-needle insertion by extracting parts after use.

Nested injection and suction tubes stabilize the primo-node, enabling continuous observation while preventing position drift during tracing.

A surgical grasper uses a single tension element to coordinate jaw closure and angle adjustment through pulley routing.

An integrated wound dressing simplifies negative pressure treatment by merging the drain, tube, and draping layer into one assembly.

Segmented stiffness enables navigation through curved vertebral bodies, reducing tissue trauma and puncture frequency during marrow extraction.

A removable cleaning device integrates a sponge and heating element to maintain optical clarity on surgical lenses.

A solid needle advances within an electrode to incise tissue while fluid flows through the surrounding gap.

A dermatological treatment system uses inserted electrodes to deliver pulsed electrical signals for targeted tissue therapy.

Radiofrequency ablation on the ventral tongue surface creates internal lesions to expand the airway passage.

Anchoring a compliant fluid container between arterial and venous vessels restores pulse wave propagation while containing leakage risks within the vein.

Hydrating polymer markers with microspheres sustain visibility as carriers resorb.

Segmented shields deploy at distinct stages to protect internal organs from accidental injury while reducing insertion force.

Telescoping sleeves strengthen small-diameter instruments to resolve rigidity trade-offs in minimally invasive surgery.

A transrectal ultrasound probe uses a cohesive gel mediator to stabilize the imaging interface and guide biopsy needles.

A steerable rod with a preformed bend advances through a friction-reducing cannula, resolving insertion difficulties in vertebral bodies.

An annular converging laser beam removes precise tissue micro-volumes with minimal thermal damage to surrounding structures.

Electrocautery modifies the pericardium to relieve heart pressure without trauma.

A sheathed biopsy tool expands its toothed liner to collect sufficient tissue volume from deep locations, reducing the need for multiple passes.

A flexible mounting base stabilizes transcutaneous sensor placement, eliminating patient discomfort caused by rigid bulky structures.

Overlapping adhesive tapes sandwich catheters to prevent movement and reduce vein irritation.

Multi-faceted biopsy needle tips reduce insertion force by minimizing cross-sectional area, enabling easier soft tissue penetration for larger tissue samples.

A tunable transformer matches impedance to reduce reflected power and maximize energy delivery during microwave tissue ablation.

A bone cement delivery apparatus features a syringe, connecting tube, and needle linked by a connector that maintains substantially uniform dimensions throughout the fluid path.

An end-deploy mechanism expands a bioabsorbable hydrogel marker within the biopsy cavity to resolve migration risks and improve ultrasound visibility.

A remote-controlled micropositioning system uses cable pull mechanisms to align medical instruments within MRI environments.

A tapered insert applies pressure to a swab tip to transfer biological samples into a solution.

A valve repair device uses a spacer element to close gaps between native valve leaflets.

A biopsy device uses a sliding arming button to sequentially position the stylet and cannula for single-handed operation.

Tool mount adaptor system secures medical instruments to robotic insertion devices via locking mechanisms and cannula holder assemblies.

A dithering device vibrates a working catheter relative to a guide catheter to measure proximal forces for distal estimation.

Segmented chambers with dynamic vacuum control prevent tissue compression during biopsy sample collection.

Offset swaging elements create needle indentations that distribute shear force, preventing material failure during suture attachment.

An overtube with a computation part detects target motion to maintain a predetermined distance, reducing surgery time and mucosal contacts.

Integrated hysteroscopy device merges visualization sensor with aspiration lumen to eliminate blind biopsies during uterine procedures.