Surgical Needles TRIZ Cases

Apertured laser cut needle cannula segments the distal wall to increase flexibility for navigating tortuous endoscopic pathways.

Angular positioning of the needle trajectory relative to the imaging device minimizes movement errors during insertion into patient tissue.

A biopsy brush uses a movable shaft to deploy bristles from a distal tip cavity for tissue sampling.

Mechanical cutting replaces thermal ablation to preserve tissue integrity, enabling precise resection without damaging surrounding structures.

A bone press apparatus extracts cancellous bone and marrow through a small cortical opening using suction.

A sampling probe uses a retracting compression spring and spirally grooved shaft to rotate a brush, enabling self-collection and reducing patient pain.

Inflating a balloon catheter remodels ethmoid bone to expand anatomical passageways, replacing invasive ethmoidectomy procedures that damage surrounding tissue.

Integrating grasping, cutting, and energy delivery into one device reduces procedural time by eliminating the need to coordinate multiple separate instruments.

Orthogonal fiber structures capture thrombi securely to prevent fragment release during retrieval from small-lumen vessels.

A metal marker visualizes an optical fiber position via ultrasound endoscopy to align near-infrared light emission with cancer cells.

Dissolvable blocks delay actuation until capsules reach target areas, preventing premature sampling and contamination.

Integrated thumbwheel gears rotate the biopsy cannula side port to resolve two-hand positioning constraints and enable real-time angular adjustments.

Segmented electrodes penetrate wet tissue to minimize leakage and enable depth-specific coagulation without surface energy loss.

A non-metallic frame isolates field-generators from metallic interference, ensuring accurate position tracking during medical procedures.

Segmented shield components provide localized water protection at the catheter site while preserving full skin access for hygiene.

A reinforced window dressing secures catheters using a multi-layer support structure with enhanced adhesive bonding.

A patterned trans-epidermal pigment release method uses adhesive templates to guide tattoo removal fluid delivery across segmented skin tegulae.

A flexible needle shaft combines interrupted and uninterrupted helical cuts to distribute mechanical stress along the tissue sampling path.

A Nitinol guide pin directs an articulated drill to maintain perpendicular alignment with the cortical plate while following a curved trajectory.

Resilient gripping arms on a biopsy guide cube snap fit around grid plate walls, stabilizing needle insertion and improving targeting precision.

Segmented shaped antennas resolve non-uniform thermal profiles by redistributing microwave energy for safer ablation.

A winding surface organizes tubing to eliminate pressure points on patient tissue.

A treatment probe delivers tumescent fluid alongside electrical energy to interrupt nerve conduction.

Injected thermal accelerant extends microwave ablation range and mitigates heat sink effects to reduce tumor recurrence.

An asymmetric wire configuration expands the operative field while minimizing contact between the device and other tools to reduce spark generation.

An integrated aerosol generator minimizes patient heat loss by delivering medicated mist directly into the pneumoperitoneum.

Tensionable members in a reusable biopsy device store mechanical energy to deliver high actuation force without increasing device volume.

An occluding member with a pusher lumen simplifies fistula closure by replacing complex surgical reconstruction.

Tracking devices with position indicators register surgical instruments to volumetric scans.

A handheld probe integrates a camera and photometer to measure bioluminescent signals from bacteria at surgical sites.

A magnetic probe detects injectable nanoparticles to locate sentinel lymph nodes.

A crimping device uses a movable thread guide to align with the stop hole edge during die closure.

An arc-shaped connection unit positions the needle laterally to eliminate out-of-plane artifacts and ensure clear x-ray imaging.

An adhesive-backed cushioning pad distributes IV line pressure across a larger skin area, preventing localized ulcers and nerve damage during prolonged therapy.

Nested endoscope needles pierce tissue from inside to reduce trauma and complexity during PEG tube installation.

A multi-resonant antenna transmits microwave energy at distinct frequencies to heat biological tissue volumes.

Segmented retention members on a stylet couple to mesh implants, preventing misplacement and reducing tissue trauma during surgical insertion.

Sliding handle segments extend instruments while electromagnetic sensors track position to resolve tracking accuracy loss during length adjustment.

A transapical removal device captures mitral valve clips using a magnetic snare basket for minimally invasive extraction.

Tracks and sliders with hinged connections enable precise instrument placement in MRI and CT scanners, reducing setup time and improving clinical outcomes.

Counter component opposes actuator motion to eliminate user discomfort from tissue piercing vibrations.

Segmented mounting substrate holds rigid sensor on stretchable adhesive tape, accommodating skin displacement without restricting daily movement.

A needle guidance device featuring a guide tower and pivotable introducer holder for precise transperineal biopsy placement.

An electrosurgical pencil integrates hand-accessible variable controls for direct power adjustment.

A flexible anti-popping member applies counteracting force to prevent dislodging of adjacent implanted follicular units during hair transplantation.

A selectively deformable ablation shaft transitions between straight and bent configurations using integrated deformation systems.

Penetrating engagement structures space the base from scalp tissue to prevent compression while securing the MRI trajectory guide frame to the skull.