Cannulas TRIZ Cases

Rotational capability of the trocar member positions the anvil assembly precisely, resolving complexity trade-offs in surgical stapling instruments.

A waterproof absorbent insert ring directs stool into a collection bag, preventing channeling that causes skin breakdown.

Arthroscopic shoulder replacement system expands a triangular working space between tendons to eliminate subscapularis detachment and reduce recovery time.

Waterproof adhesive bubbles secure medical devices during water exposure, preventing dislodgment.

Cable-driven arms triangulate within a seal anchor to resolve visualization and access constraints in minimally invasive surgery.

Segmented sealing plates and non-return parts resolve the trade-off between airtight sealing and large tissue extraction capability in laparoscopic surgery.

Nested conic frustum components create a smooth external surface that prevents tissue damage during insertion while enabling precise suture depth determination.

Percutaneous catheter creates an aortic access port to perform coronary bypass on a beating heart without cardiopulmonary bypass.

Injecting a haemostatic agent into the biopsy site causes clotting that locks the marker in place, preventing migration during breast compression release.

Concentric flexible tubes enable navigation through complex anatomical spaces without thermal actuation or rigid structures.

A trocar sleeve uses an asymmetric helical thread to enable atraumatic insertion into tissue.

Movable jaws capture hemorrhoids for precise stapling, resolving incomplete positioning in band ligation.

A flexible cannula with a slidable nitinol needle navigates the suprachoroidal space to deliver therapeutic agents into the subretinal space.

A trocar sleeve assembly uses a sliding mechanism to define an annular chamber between the sleeve and housing for fluid communication control.

Intermediary joining members attach cutting blades to balloons, preventing detachment during expansion while minimizing trauma to healthy tissue.

Additive manufactured porous screws resolve backing out risks by embedding interconnected pores that facilitate direct bone integration.

Segmented cannula seals reduce insertion friction by using movable part-circular members that adapt to varying instrument diameters without manual selection.

A femoral hip joint spacer integrates permeable connection means for medical rinsing fluid supply and drainage.

Planar coils enable wireless power transmission to eliminate cable constraints and improve manipulation performance.

Conical pleat geometry reduces hoop stresses and friction forces during insertion, preventing insufflation fluid leakage in endoscopic procedures.

Segmented osteotome tip deflects to access curved bone pathways while a torque release mechanism uncouples components under excessive force.

An ophthalmic valved trocar cannula prevents fluid loss and reduces infection risk by automatically sealing the incision site without manual plugging.

Nested rigid arms allow multiple instruments through one incision, reducing invasiveness while maintaining structural strength.

A rotating distal head stretches ligation bands to constrict hemorrhoid tissue, eliminating the need for multiple procedures.

Navigation system tracks surgical tools and updates preoperative MRI images during minimally invasive procedures to resolve port axis orientation inaccuracies.

A conical cannula guides four puncture needle cores to route a drainage tube subcutaneously.

A single movable arm synchronizes with syringe pistons to distribute fluids uniformly, reducing installation space compared to bulky conveyor systems.

A robotic surgical system adjusts end effector jaw spacing using position sensors to align with access ports.

Independent sealing elements move along predefined paths to eliminate the chopstick effect while maintaining insufflation during single-incision procedures.