Cannulas TRIZ Cases

An expandable catheter tip seals against vessel walls to create a large opening for clot reception, preventing backflow and dislodgement during aspiration.

Independent barrel rotation adjusts the operation area without rotating the fixed endoscope, preventing interference and reducing patient injury risk.

High-purity tin plate retractors adapt dynamically to surgical sites, resolving the trade-off between small insertion diameter and flexible field maintenance.

A lighted cannula system uses a highly polished luminal surface to guide LED illumination toward the surgical site.

A segmented overtube slider allows independent endoscope and tool movement to resolve mechanical complexity and air supply interference.

A surgical access port circulates chilled fluid through internal conduits to cool tissue.

A trocar nozzle directs a high-speed insufflation gas stream to create a dynamic pneumatic seal around surgical instruments.

A surgical tool insertion aid uses slidable inner tubes to enable flexible instrument exchange.

Expandable struts create a retraction canopy to improve visualization and reduce tissue disruption during minimally invasive procedures.

A multi-lumen cannula merges saline supply and waste removal channels within a single incision site.

Mechanical fluid disruption removes protective biofilm layers without damaging underlying tissue, improving chronic infection treatment outcomes.

Pivotable platform establishes known geometric reference points to resolve instrument positioning ambiguity in minimally invasive surgery.

A magnetic wing mechanism pivots to anchor a surgical access device, resolving position stability issues in pressurized environments.

A nose stud needle tip features a bendable joint that allows the tip to flex after perforation.

An internally driven gear train in a robotic arm provides degrees of freedom to access abdominal quadrants through a single incision.

An expandable needle head transitions from a small insertion profile to a larger working diameter for therapeutic delivery.

A multi-lumen tube set connects to a vacuum source and branching conduit to evacuate smoke during laparoscopic procedures.

A camera support tube joins an imaging unit and secures to the body surface via a rotatable fixing tool.

An offset conductive member creates reliable electrical contact between a shaft and probe, eliminating hot spots from poor connection during RF lesion creation.

Segmented surgical tools facilitate minimally invasive LVAD implantation, avoiding sternotomy adhesions to simplify future heart transplants.

A magnetic-anchored robotic system provides seven-degrees of freedom movement for surgical instruments within the abdominal cavity.

A segmented sealing gland uses an iris diaphragm to accommodate varying tool diameters, reducing mechanical failure risks in endoscopic procedures.

A deformable surgical access device with flanges compresses for insertion and expands to engage vessel walls.