Cannulas TRIZ Cases

A disposable transparent cannula enables precise tissue cutting and visualization through a single small incision.

A laterally fenestrated cannula design with a dedicated service port enables direct instrument servicing within the surgical site.

Curved tool geometries minimize interference between instruments entering through one port, reducing infection risks associated with multiple incisions.

A percutaneous extraforaminotomy procedure expands the intervertebral foramen through targeted ligament resection.

Nested evacuation ring channels remove smoke while flanges constrain the wound guard and access device, resolving visualization trade-offs.

Parallel cannula channels and interchangeable sleeves define precise screw positions, resolving glenoid alignment challenges.

Nested cannulas and ring jet assembly maintain pressure differential, enabling simultaneous multi-instrument use through a single incision.

Automated liquid and gas flow mechanisms clean endoscope lenses, reducing manual intervention and operative time during surgery.

An inflatable member stabilizes a surgical retractor in a natural orifice, preventing pressurized gas escape while allowing flexible instrument movement.

Segmented guiding portions on the outer tube allow rail members to bend dynamically, resolving curvature mismatch during instrument insertion.

Segmented lumens introduce wash fluid while applying suction to remove stone fragments, preventing duct collapse during lithotripsy procedures.

Tiered drip flanges wick excess fluid via capillary action, preventing leakage and spillage during medical injection procedures.

Transparent obturator tips with vent holes enable precise visualization during first-entry trocar placement, reducing organ damage risk.

Etched pre-bending channels reduce bending forces and simplify production of miniaturized medical cannulas.

D-shaped outer tube valve slits align along a reference line to ensure equal stress distribution across leaflets.

Passive syphon drainage limits organ pressure build-up during liquid irrigation, preventing kidney damage from over-pressurization.

Segmented lumens enable multiple instrument passage through a single sheath, reducing operational complexity while maintaining procedural versatility.

A compact fluid applicator uses a non-linear barrel layout and magnetic dose assembly to reduce user fatigue during operation.

A coring tool actuation mechanism moves a cutting head via a selector element to enable single-handed operation.

Nested doll and feedback principles enable precise cardiac ablation placement while resolving surgical site overcrowding.

An asymmetric spoon rim reduces tissue injury risk while maintaining removal efficiency for hardened fecal matter.

An expandable specimen bag unfolds sequentially via a release string to accommodate varying tissue sizes, eliminating the need for multiple fixed-size bags.

A nasal catheter guide wall directs fluid spray laterally along the nasal meatus.

Longitudinal ribs in the cannula member create parallel fluid channels that maintain inflation reliability when one path is obstructed.

Dual inflatable membranes create a positive pressure gradient for secure anchoring, reducing post-procedure discomfort.

A smartphone mount maintains optical separation from a speculum to capture ear canal images during microsuction procedures.

A cannula stylet lock assembly uses a radially extending flexible arm to secure the stylet during bone insertion procedures.

A handheld air-powered irrigation device uses a roller actuator to adjust fluid pressure for precise wound cleaning.

A robotically-assisted surgical device determines optimal port positions using 3D data and kinematic information.

A trocar fluid remover assembly uses absorbent and wicking elements to clean scoping device lenses during insertion.

A wash nozzle structure directs fluid spray across an imaging lens to maintain visual clarity during surgery.

A portable ampoule features a tapered tip and sealing device for controlled fluid dispensing.

Single adjustable obturator accommodates varying trocar sizes, reducing inventory costs and ensuring consistent insertion force.

An illuminating guidewire projects light through tissue to enable precise balloon placement during sinus dilation procedures.

Segmented apical attachment ring secures ventricular assist device without sternotomy, reducing blood loss during minimally invasive implantation.

A safety-stop trochar device with adhesive wings secures to the surgical site for hands-free smoke evacuation.

Inflatable triangular frustum shell body with partition stiffeners anchors inside the abdominal cavity.

A trocar cannula uses a rotating slit tube to form ridges for secure anchoring in the body wall.

An adjustable insertion device uses a tensioner to modify spring compression for precise transcutaneous element deployment.

A surgical cannula uses a fluid-driven conduit to transition between flexible and rigid states.

Simultaneous instrument retraction prevents tissue collision during entry guide reorientation.

Oblique trocar design enables secure rectouterine pouch access while reducing injury risk to bladder, ureters, and uterine vessels.

A guide tube supports a surgical instrument shaft through a robotic arm to maintain alignment between the portal and the robot.

Segmenting the probe into rigid and flexible portions resolves stability versus flexibility trade-offs while maintaining light coupling efficiency.

A cannula assembly features a collapsible sleeve with a deformable mesh anchor member that retracts radially inward upon deployment.

Adjustable parallelograms in a TMJ guide device maintain cannula orientation to prevent trauma and fluid leakage during arthroscopy.

A transparent window on an obturator sleeve moves to expose a longitudinal bore for surgical instrumentation.

A surgical access port uses an expandable dome to receive multiple instruments through a single tissue tract.

Segmented inner surfaces channel fluid away from the central axis, reducing accumulation on surgical instruments during minimally invasive procedures.