Surgical Needles TRIZ Cases

See how a side-positioned fluid outlet and guide element direct cleaning fluid onto the hand an

See how temporally distinct dispensing events and hand-orientation guides enable fluid collecti

A cam pin and cam surface mechanism lets a multi-lumen spherical valve switch states with less rotation, saving space while maintaining sealing.

Modular RF coil elements and reusable supports let MRI systems adapt coil placement, upgrade channels, and improve signal-to-noise ratio.

A dimpled needle and splayed stylet deploy multiple fiducials in sequence while avoiding reload steps and air pockets that disrupt ultrasound imaging.

A lateral-slit spacer mounts onto a surgical shaft to set patient-specific insertion depth and reduce unintended tissue injury.

Acoustic sensing tracks motor signatures in real time, letting surgical instruments adjust speed precisely with less complex monitoring.

Contact terminals in a port site transfer microwave power to the inserted shaft, avoiding rigid coaxial cables and preserving fine surgical motion.

Virtual treatment and safety boundaries guide ablation needle deployment in real time, improving placement accuracy and reducing tissue damage.

Integrated infrared, switch, and RFID checks confirm device presence and magnetization for reliable medical device tracking.

An implantable split-ring resonator focuses wireless microwave energy into a localized field for precise neuromodulation without thermal damage.

A slotted specimen imaging filter shapes the x-ray beam for on-gantry tissue imaging, avoiding separate systems, extra time, and discomfort.

A plated elastic antenna body bends through tortuous anatomy, recovers its shape, and helps control ablation zone size and insertion depth.

Orientation keys align the needle during magnetization, enabling precise position and orientation tracking during insertion.

RF transmission through a dielectric waveguide carries high-resolution image data in an insertion tube without conductor bottlenecks or fiber cost.

A dielectric waveguide carries RF image data through an insertion tube, avoiding conductor bottlenecks and fiber cost in interventional imaging.

Infrared, switch, and RFID feedback confirm when a ferrous medical device is magnetized for reliable 3D tracking.

A multipole magnetizer and asymmetric orientation key ensure correct needle magnetization for accurate ultrasound-guided tracking.

A patterned cylindrical antenna bends through tortuous anatomy, recovers its shape, and helps control tissue ablation zone size.

Multiple cutting or gripping mechanisms fold inside a hollow rod, then deploy outward to add function without increasing entry-point size.

A plated flexible antenna with adjustable pitch bends through tortuous anatomy and tunes radiation patterns for precise tissue ablation.

A nested fluid channel cools a helical ablation antenna while blocking coolant migration, improving temperature control during tissue ablation.

Depot-fed nickel brazing secures hard metal jaw inserts while limiting corrosion, discoloration, and misalignment during surgical instrument production.

Two housing sections and a coupling element bend a contained needle precisely, reducing needlestick risk and extra tool handling.

A ratcheting drive enables oscillating rotation and actuator return under resistance, reducing binding in elongated medical instruments.

An in-situ MgF2 outer layer slows magnesium staple degradation while preserving strength, plasticity, and biosafety for implantation.

A lead screw and reversible motor coordinate biopsy opening motion to cut insertion drag while supporting sterilization and longer reuse.

A lead screw driver controls cannula motion to close the tissue opening during insertion, reducing drag while preserving precise sampling.

Differentiated bevel angles and smooth tip transitions spread penetration force to reduce injection pain and improve comfort.

A dissolvable piercing tip and blunt sensor body enable continuous glucose monitoring with less tissue trauma, better healing, and stable membrane strength.

A trough-shaped coring assembly with rotating cutters and helical transport retrieves larger biopsy samples with less tissue trauma.

Using 5-15% niobium in a copper biopsy needle alloy cuts MRI artifact area and volume while preserving strength and biocompatibility.

A push-pull coupler latch releases intraosseous biopsy tools in either direction, easing needle substitution while maintaining secure driver engagement.

PID control varies the cutting-window open area through sleeve rotation to keep hysteroscopic working-space pressure stable during tissue resection.

Two rotating housing sections bend a contained needle at a defined point, improving bend precision while reducing needlestick and sterilization risks.

A trough sheath and rotating coring elements collect multiple tissue samples in one insertion, improving imaging correlation while limiting trauma.

Perpendicular grooves and opposing crimping pins improve needle deformation control for secure suture attachment in industrial production.

A rack-and-piston pneumatic motor replaces metal parts to deliver compact, high-force stepping motion compatible with MRI environments.

A clamp-and-fulcrum bending mechanism creates customizable 5-30° needle bends to counter deflection and improve placement precision.

Applying the top lubricious coat after laser drilling avoids charring, preserves needle appearance, and maintains low drag in tissue.

A locally thickened needle wall preserves insertion strength at small diameter, improving sensor fixation while reducing subject stress and noise.

Preformed grooves and a leverage arm bend surgical needles to selected radii while reducing needle sticks, contamination, and tissue disruption.

Rotational input is converted to axial force and back at the tip, reducing channel friction and jerky endoscope instrument motion.

A hinged swaging die with load-cell feedback enables on-press pull testing, improving needle-suture attachment consistency and reducing failure.

Load-cell feedback and servomotor control improve swaging precision, reducing needle cracking and weak needle-suture attachment.

A self-reversing screw drive keeps the biopsy cutter moving bidirectionally from one cable rotation direction, reducing cable whip and vibration.

Variable wall thickness and an internal flow channel let a thin-walled spiral endoscope tube fill completely in one molding step.

A guided hollow cutter and tissue stabilizer enable precise microscope-based tissue excision without hand obstruction or fragile-sample damage.

A rack-and-two-piston pneumatic layout delivers compact, metal-free stepper actuation with high force and precision for MRI-guided robotics.

Negative-pressure tissue lifting with an articulating suction head improves trocar access while reducing injury risk and avoiding pneumoperitoneum.

A primer-base-top coat sequence with post-drilling top coating and vacuum drying prevents charring while preserving needle lubricity.

Microsphere-coated biopsy markers create orientation-independent ultrasound reflection, improving site localization in fibrous breast tissue.

Particulate sensing lets the evacuation motor adjust suction speed in real time, improving smoke removal while limiting energy use.

Axially offset abutment surfaces and a compression-fit sleeve secure nozzle position, sealing, sterility, and uniform cryoprobe cooling.

Auto-locking detachable needles and electrodes prevent re-emergence, cross-contamination, and needle sticks during electroporation.

An integrated pseudo needle and marker jig aligns mammography and biopsy 3D coordinates more accurately for precise needle placement.

RGB-D marker tracking estimates needle position and angle in real time, avoiding robotic arm cost, recalibration, and operator-dependent biopsy setup.

A 6-DOF electromagnetic tracking catheter enables real-time 3D prostate biopsy targeting without extra MRI scans or repeat visits.

Cells are delivered by endoscopic ultrasound into lymph nodes to improve engraftment and grow functional ectopic liver, kidney, or pancreatic tissue.

Combining electromagnetic and optical tracking with an adjustable alignment guide improves real-time instrument positioning when direct visual access is blocked.

A resilient dilator coupling lets one assembly puncture and advance the sheath, cutting exchanges, procedure time, and embolism risk.

CO2 cooling and a choke mechanism help a microwave ablation antenna form spherical lesions while limiting charring and back-heating.

An elastically compliant insulating cover limits RF current loss in blood, improving tissue vaporization efficiency and reducing thrombotic risk.

A ratchet-pawl coaxial biopsy layout enables one-handed tissue sampling, controlled axial motion, and precise rotational alignment.

A blunt guide needle and modified micro-spring anchor improve multi-organ lesion localization accuracy while reducing vascular injury.

An articulated sheath and integrated needle navigate tortuous bronchi to sample peripheral lung nodules with less invasive, multi-site biopsy.

A detachable cutter breaks a sealed membrane to capture ear tissue reliably while lowering sampling force and reducing tissue damage.

A sharpened coil anchors the catheter before vessel-wall puncture, improving stability and conduit creation under high-pressure conditions.

Automated inner and outer tube motion delivers brachytherapy seeds while withdrawing the puncture needle to cut doctor radiation exposure and save time.

Pre-injecting vasopressin through a thin hysteroscopy needle reduces tissue bleeding, preserves visualization, and shortens surgery.

Mechanical locking between choke layers prevents movement in microwave ablation probes, keeping ablation zones stable and tissue damage lower.

Selective dual-lumen valve routing and tissue sensing improve fluid delivery between tissue layers, reducing device exchanges and procedure risk.

A preinstalled CGM sensor module and applicator simplify skin attachment in one step while keeping the transmitter reusable to cut waste.

Insertable retractable electrodes deliver fractional RF at different tissue depths in wet openings while limiting RF leakage and trauma.

A needle guide and port multiplier place multiple spinal needles in one fluoroscopic session, cutting handling errors, procedure time, and radiation exposure.

Cooling a thermally conductive biopsy needle cuts bleeding and pain while preserving tissue sampling quality and procedure speed.

A small-diameter bipolar wand combines piercing, suction, and coagulation to reduce turbinate tissue with less bleeding and faster access.

A stepped guide constrains a flexible wire electrode at its transition point, improving implantation precision and preventing displacement.

Sub-microsecond pulse packets tuned to tissue membrane charging time enable selective tumor ablation with lower energy and less normal tissue damage.

Optimized tubing geometry resists kinking while reducing cannula outer diameter, helping maintain fluid flow and improve insertion comfort.

A skin-adhered tiltable imaging assembly maintains continuous laparoscopic views with less repositioning, fewer incisions, and cooled electronics.

A segmented interface patch shifts adhesion from skin to patch, keeping needle access while reducing irritation, blisters, and skin damage.

A landmark-aligned needle guide sets insertion angle and depth for neonatal lumbar punctures, improving CSF access without ultrasound referral.

Optical fibers thermally activate a shape memory alloy wire to steer a slotted biopsy needle while sensing temperature and deflection for accurate, MR-compatible guidance.