Surgical Needles TRIZ Cases

An exterior tube with a locking mechanism prevents rotation while an internal air supply passage delivers pneumoperitoneum gas without twisting.

Axial tube movement varies compression load on the elastomeric seal, accommodating different device diameters while reducing material wear.

A permeable container with a sharp-edged opening stabilizes tissue samples by enabling rapid reagent penetration.

A spring-loaded needle shield pivots to enclose the needle automatically after withdrawal without manual user intervention.

Automated biopsy specimen management system links patient data with container identifiers at the point of collection.

Segmented sleeve flexibility and wire-driven bending resolve maneuverability constraints for efficient occlusion passage.

Separating the flush channel from the guide sleeve reduces flow resistance, maintaining high pressure for effective tissue cleaning.

Expandable catheter support delivers localized radiation therapy to prostate tissue while sparing the capsule and adjacent nerves from damage.

Outer tubular member and sliding cutting member sever tissue samples for complete retrieval within the needle assembly.

Optical fiber chemical sensors monitor oxygenation, pH, and lactate levels in real time during biopsy procedures to resolve the lack of biochemical feedback.

Rotating cannulas shear tissue cleanly, preventing crushing and ensuring representative samples regardless of density.

Electrical contacts and mechanical posts detect full cannula penetration, preventing angled placement errors.

A surgical delivery device uses a sealed needle guideway to draw tissue via negative pressure for controlled substance injection.

A multi-lumen trocar coupling employs a ratcheting clutch mechanism to ensure secure rotational engagement of tube sets.

A nasal swab uses a flexible tip with distinct geometric layouts to collect samples from the nasal passageway.

Segmented fiber design with spring-loaded collet clamping prevents contamination and lowers replacement costs in high-energy medical laser applications.

Grasping arms stabilize elastic scrotal tissue while RF probes cauterize the vas deferens, reducing bleeding and healing time.

A gynecological suction module uses negative pressure to grasp the cervix without piercing tissue.

Multi-probe ablation simulation system predicts treatment volumes to guide probe positioning, reducing procedure time and non-target tissue damage.

A flexible surgical instrument uses a shape memory alloy spring to adjust stiffness during insertion and manipulation.

Segmented tunneling tool with curved shaft creates parallel subcutaneous tunnels from single incision, reducing infection risk and improving cosmetic outcomes.

Conductive hypertonic saline reduces tissue impedance and displaces air to enable effective radiofrequency ablation of peripheral lung tumors via bronchoscopy.

A sensor cartridge integrates a sterile capsule, insertion needle, and mounting unit into a single assembly for subcutaneous deployment.

Ultrasound imaging and magnetic field tracking guide catheter placement, eliminating radiation exposure from confirmatory X-rays.

Movable electrodes pierce skin to deliver RF energy, combining thermal and mechanical injury for effective tightening.

A polymer needle with a solid core and peripheral conduits delivers multiple fluids while maintaining structural integrity.

Straight-cut optical fibers in a multilumen insert prevent total internal reflection and cladding autofluorescence, improving tissue discrimination accuracy.

A skin compression insertion device creates a sloping surface to guide needle penetration into subcutaneous tissue.

A tubular coupling uses latching grooves to connect fluid lines while maintaining continuous flow.

Segmented axial and helical slots enable independent degree of freedom control, resolving needle manipulation challenges in confined prostate spaces.

A biopsy cutter drive uses a threaded overmold to convert rotation into linear translation for precise tissue sampling.

Electromagnetic sensor system detects field distortion via baseline metric comparison to maintain precise surgical instrument positioning.

Nesting a pressure sensor module inside the tool channel provides real-time feedback to resolve tissue location accuracy versus device complexity.

Central thumbwheel rotates biopsy needle aperture to resolve operation simplicity versus measurement precision trade-offs.

Spring contact and conductive rail maintain electrical connection during telescoping, preventing back pressure damage to PCB wiring.

An epidural catheter uses steering wires as RF electrodes to generate electromagnetic fields for targeted pain treatment.

A puncture assistance system detects vascular diameter during ultrasonic imaging to generate real-time feedback on probe pressing force.

An assistance device uses a main body and lid with puncture and blood sampling guides to align tools for skin contact.

Nested drill shaft and stylet reduce infection risk by minimizing tissue exposure during cartilage repair.

Retractable lateral support on a cervical sampling brush expands for coverage and collapses during extraction to prevent sample contamination.

Aluminum foil outer layers shield infusion solutions from light and heat, preventing deterioration during storage.

Segmented guide blocks and an adjustment ring resolve complexity-reliability contradictions in image-guided procedures.

Mounting a marking tool directly on the ultrasound probe housing eliminates manual alignment shifts, ensuring precise needle insertion accuracy.

Elongate flexible device with sensors generates a real-time 3D anatomic model to guide access tool deployment.

Rotating a screw-engaged central hub moves needles through a suction cap to set exposure length.

A surgical guide system defines a virtual pathway to create angled entry access points for precise lesion targeting.

Segmenting the catheter into distinct modules manages device complexity while real-time sensor feedback optimizes treatment precision.

A flexible endoscopic instrument combines a cutting shaft with an aspiration channel to resect and retrieve polyps in one step.

Real-time electromagnetic tracking compensates for breast tissue deformation during tumor resection, reducing positive margin rates.