Surgical Needles TRIZ Cases

A surgical instrument locking mechanism uses an unlocking element aligned with the spreading direction to enable one-handed operation.

Concentric rotatable driving members reduce cable entanglement and simplify instrument attachment in robotic surgical assemblies.

An arching boom with spaced holes retains a needle tube, enabling rapid angle adjustment while reducing radiation exposure risk.

Nested shaft housing isolates screw interfaces from body fluids and tissue, reducing contamination risks in subcutaneous tunnel formation.

A classification system segments periorbital dyschromia into three types using imaging and biological characteristics.

Flexible arms house the sharpened tip within a translucent tube, reducing puncture risks during exchangeable biopsy procedures.

Grouping distal electrodes into selectable widgets prevents coverage gaps during cardiac irreversible electroporation procedures.

A laparoscopic instrument uses a planetary gear mechanism to adjust shaft length relative to the handle.

A resilient sheet supporting member deforms from flat to tubular shape during retraction into a cylindrical outer sheath.

Mechanical switches replace expensive sensors to lower costs while periodic pump cycles reduce noise.

Segmented expandable struts deliver ablation energy to form a shunt, reducing right-to-left shunting and systemic embolization risks.

A telescoping electrosurgical device integrates a conductive fluid conduit within its shaft to deliver saline irrigation during tissue treatment.

A biopsy cannula depth stop device prevents over-insertion using a circumferential guiding portion and locking mechanism.

A motor-driven drive system rotates and translates a helical screw biopsy member through threaded gear engagement.

A VfA delivery system uses a steerable fixation sheath to position a tissue-piercing electrode for precise left ventricular pacing.

Cantilever tissue anchor tensions samples in biopsy notch, preventing damage from barbs.

An apposition element stabilizes a shunting catheter in the coronary sinus, preventing right-to-left shunting and systemic embolization risks.

Intersecting line lasers mounted in an end effector mark needle insertion points, resolving CT imaging artifacts caused by radiopaque metal markers.

A hook body pierces myocardial tissue to form a clamping structure with the implant sidewall.

Ultrasonic sensors replace complex vision systems to provide accurate positioning data, reducing radiation exposure and patient anxiety during compression.

A flexible introducer tip with an integrated electrode detects electrograms to confirm positioning, preventing heart wall laceration during epicardial access.

A hollow cylindrical sampling tool uses a plunger to extract standardized tissue cores.

Volumetric ultrasound imaging system generates probe movement guides based on identified tissue.

A shaped electrosurgical electrode tip concentrates energy while a wave generator dynamically adjusts power output based on tissue impedance.

Segmented magnetic elements track relative motion between a catheter adapter subassembly and wire, resolving loss of information during vascular access.

Nested packaging holders secure sterile vials with snap-fit mechanisms to prevent tipping, enabling efficient labeling without specialized equipment.

A distal cutter divides adhered tissue before lead removal, reducing mechanical trauma and simplifying extraction.

Ultrasound modulation of RF transponder signals reduces power consumption while maintaining high measurement precision.

Segmenting the disposable chemical sensor from the reusable probe reduces device complexity while maintaining reliable bleeding detection.

Integrated fluid delivery and vacuum aspiration in the tissue collector remove blood and debris from biopsy specimens for clean pathological examination.

A conductive fluid mediator maintains current flow and prevents vapor emission during high-temperature plasma ablation.

A transcoronary sinus pacing catheter pierces the coronary sinus wall to anchor in the left ventricular summit, bypassing variable vein anatomy.

A puncture tool slider switches engagement states to move a needle tube axially or rotate it circumferentially.

A dielectric transformer interfaces coaxial conductors with an ablation antenna, reducing reflected signal losses caused by varying tissue impedance.

Automated vacuum transport delivers biopsy specimens to an integrated x-ray unit, eliminating manual handling delays and reducing second pass rates.

A needle aid device uses a trigger module with elastic clamping jaws to secure and deploy an emitter mechanism.

Inflatable bone tamp creates controlled voids in fractured bone via percutaneous access, reducing tissue disruption while enabling precise filler placement.

Vacuum source and air inflow line create pressure difference to prevent clogging during tissue sample transport.

Composite silicone gel adhesive and film strips create reliable airtight seals on uneven skin surfaces.

A pressure-reducing dressing with a low-resilience foam pad and water barrier laminate secures medical devices to patient skin.

Alternative oxidizer baths eliminate toxic chromium six compounds while reducing process time for high-speed needle manufacturing.

Impedance measurement across multiple circuits detects poor counter-electrode contact, preventing skin charring by adjusting energy output.

Nested stylet and needle components enable controlled, one-at-a-time fiducial placement via a single puncture, reducing tissue disruption.

A biopsy needle places measuring electrodes at the distal end of an inner needle to localize bioimpedance detection.

Precomputed sphere solutions guide probe placement to minimize surgical duration while ensuring complete tumor coverage.

A portable medical diagnostic device integrates biological specimen collection modules with nano and bio sensors for real-time health parameter analysis.

Variable actuation forces on a single button control drive assembly sequences, resolving operator confusion while maintaining complex control capability.

A microwave ablation needle uses controlled coolant flow to adhere tissue and stabilize the device during treatment.