Surgical Needles TRIZ Cases

A water-containing curing medium makes angled channels visible in MRI, enabling precise pre-insertion device positioning.

A treatment planning module models tissue heat and electric fields using protocol and conductivity data to estimate ablation zones.

A movable wiper displaces samples along the needle surface, overcoming strong attachment forces for complete cassette transfer.

A sliding collector rack stores sequential biopsy specimens in separate chambers, preserving orientation and limiting contamination.

This case uses a stabilizing puncture guide and bipolar RF probe to stiffen nasal tissue without grafts or implants.

This case uses a wire and dilation catheter, followed by energy or medication, to preserve an atrial opening for pressure relief.

This tether assembly pre-aligns the attachment mechanism, reducing retrieval complexity, procedure time, discomfort, and contamination risk.

A sleeve-and-guide biopsy instrument aligns cavities and apertures to collect multiple tissue samples with less procedure time.

A paddle-shaped tip combines conductive and insulative sides to ablate the posterior nasal nerve while protecting nearby tissue.

A guiding channel redirects trigger motion toward the opening, reducing accidental activation without complex safety locks.

A movable rod and insertion member progressively dilate the cervical os while guiding forceps into the endocervical canal.

Powered drivers can be bulky and limit control; this manual trocar handle supports stable, ergonomic intraosseous needle advancement.

This case uses a movable needle and rotating abrasive burr to remove vein-compressing bone and preserve venous valve function.

Imaging-based template customization replaces complex stereotactic navigation, helping shorten procedures and reduce radiation exposure.

A motion detector, timer, and dwell circuit cut idle power while restoring biopsy drive readiness when movement returns.

An integrated X-ray sensor images biopsy samples inside the holder, avoiding transfer steps and speeding specimen analysis.

Independent actuators and one controller simplify precise electrode positioning and fixation during electrosurgical treatment.

Echogenic features improve ultrasound visibility; automatic shielding reduces needlestick risk.

Adjustable stops and ultrasound-guided virtual deployment help predict treatment volume and protect nearby tissue.

A metal distal hub and autoclavable PEEK proximal hub enable removable tips, efficient sterilization, and quick end-effector changes.

A locking connector enables cut-lead traction through smaller extraction sheaths.

Aggregate fibroid and treatment data into visual maps that update in real time, helping users refine plans during procedures.

A retractable helical engagement member secures the heart while one catheter delivers multiple agents sequentially or simultaneously.

Oblong electrodes lower impedance, enabling smaller S-ICD generators while maintaining effective high-voltage defibrillation.

A hinged collector shifts between collapsed and expanded states to capture esophageal samples and support complete retrieval.

A transport tube and multi-chamber holder collect, move, and preliminarily analyze biopsy tissue with fewer hand operations.

Staged sheath deployment anchors active-fixation leads near the heart, supporting consistent therapy and lower energy needs.

A transparent, flexible, high-friction cover makes needle blade and transfer-tip direction visible and tactile during handling.

Needle and contact electrodes deliver depth-specific currents, using impedance feedback to improve accuracy and limit skin burns.

A recyclable inserter housing and user-activated ejection mechanism contain and separate sharp parts, reducing waste and handling risk.

This case shows how hub geometry and a resilient member maintain cocking separation while simplifying tissue sampling handle assembly.

A diameter-monitoring control unit adjusts needle movement when vasospasm occurs, supporting reliable vessel access during puncture.

This case shows how expandable catheter legs control needle depth for circumferential renal nerve ablation while limiting vessel injury.

Stored procedure parameters guide patient positioning and equipment setup before procedures, reducing errors and repositioning time.

A dynamic pin-and-ramp retainer secures the trocar assembly during stapling while allowing insertion, removal, and repositioning.

A sheath-protected flexible loop conforms to pancreatic cyst geometry, increasing cell harvest while limiting tissue damage.

An offset swab cavity supports vertical placement while a separate releasing-agent cavity simplifies nucleic acid elution.

A conduit, bulge, and clearance-fitted ring resist tissue slippage and leakage without excessive compression that disrupts circulation.

A blunt atraumatic needle uses energy puncture, insulation, and a side-port to guide wires into the pericardial space.

Two-stage filtration captures bone fragments, plasma, stem cells, and growth factors to form an implantable graft product.

A deployable implant uses sutures to pull visceral and parietal pleura together, sealing the access path before lung biopsy.

Offset relieving cuts in inner and outer cannulas support 360-degree rotation while limiting gross movements during tissue cutting.

Interchangeable probes combine suction and spring-loaded needle motion for flexible tissue sampling.

A control-module display guides biopsy setup and verifies electrical and fluid connections to reduce operator errors.

This case separates biopsy sampling and marker delivery with a tip marking lumen for reliable site identification.

A dual-port balloon-filler device supports vertebral height while delivering bone filler, reducing instrument changes during kyphoplasty.

A sealed manifold and exchangeable trays support rapid tissue sample collection while limiting waste exposure and sample loss.

A simulated-image optimization method estimates metal needle position in distorted MRI without lengthy correction scans.

This biopsy gun uses one thrust element and a selective slider to load stylet and cannula carriages with fewer parts.

A hollow-shaft biopsy device uses movable cutting and engagement members to improve sample adequacy while limiting invasiveness.