Cannulas TRIZ Cases

Segmented body slots provide angular visibility without increasing incision size or tissue trauma.

A surgical instrument system separates internal drives from external holding arms to enable precise actuation without complex motorized sterile connections.

Segmented cannula segments adjust length while the distal anchor secures positioning, preventing fluid leakage during minimally invasive procedures.

Pivoting surgical tools on a central frame enable independent multi-plane movement for intuitive single port laparoscopic access.

A multifunctional osteotomy device integrates cutting, cauterization, irrigation, and aspiration capabilities within a single catheter structure.

A flexible manipulator tool uses hinged cheeks to transmit tensile forces and absorb compressive loads through controlled deformation.

A steerable catheter transitions its distal section to an arcuate shape for directional control during navigation.

Segmenting surgical instruments into separable handle, shaft, and functional components simplifies cleaning and reduces contamination risks during reuse.

A liquid dispenser uses a central nozzle and two lateral nozzles to produce a modified fan-shaped jet for nebulized particle distribution.

A cannula coating smooths the inner surface to prevent material detachment.

A specimen retrieval device uses a high friction inner lining to distribute tension and prevent tissue bunching during extraction.

A laparoscopic tool uses a docking mechanism to connect a robust tip to a small-diameter sheath for precise surgical actuation.

Nested cannulas enable controlled septal penetration while preventing tissue skiving and foreign body embolization.

A bendable endoscope insert part adjusts imaging direction based on detected insertion depth to prevent trocar interference.

Segmented channels and dynamic seals maintain insufflation pressure while allowing instrument mobility through a single access port.

Adjustable outer sheath limits needle advancement into bone tissue, preventing nerve damage during orthopedic procedures.

A mesh membrane structure transports bodily fluids via capillary action, resolving unreliable blood transfer from shallow lancing wounds.

A trocar sealing unit uses a holder to clamp an elastomeric element, creating a secure mechanical bond for instrument insertion.

Varying wall thickness in a reusable trocar cannula shifts the center of gravity closer to tissue engagement ribs, reducing tipping torque during surgery.

An introducer apparatus uses an asymmetric inserter to form tissue pockets for secure medical device placement.

A viewing trocar assembly positions an imaging device on its outer wall to capture surgical field data.

A rotatable evacuation adapter aligns ports to draw smoke through a suction device, preventing particulate escape during instrument changes.

A handheld apparatus combines a ligature applicator and substance injector to restrict blood flow while delivering anaesthetics.

A trocar mounting member with an inclined surface aligns multi-jointed end tools parallel to the shaft, eliminating manual adjustment steps during insertion.

Embedded ferromagnetic particles enable remote inductive actuation of shape memory materials.

A movable slider links the endoscope to the treatment tool inside an overtube, preventing visual dead areas caused by parallel passages.

Micromolding creates a flared section with increased wall thickness to resist buckling during flexible cannula insertion.

A dual lumen dilator assembly integrates parallel lumens and a joint channel to guide guidewire movement through the interatrial septum.

An absorbent surgical device cleans trocar surfaces to prevent fluid obscuration and reduce surgery time.

Partitioned overtube links endoscope and treatment tool movements via a coupling ring, eliminating assistant dependency.

A facet joint surgical tool with rotatable members reconfigures distal tips to access and treat synovial cysts through a minimally invasive sheath.

A surgical device uses a valve system and wick to manage internal moisture, enabling thorough cleaning of complex structures.

Antennas on a trocar cannula detect tagged surgical items, resolving manual counting errors and preventing retained foreign objects.

A rotary valve manifold directs pressurized gas to multiple trocar assemblies, enabling independent fluid flow control.

A medical sphincterotome uses a deflection member and offset nose to direct wire guides into selected body passageways.

A thrombectomy funnel employs a dual-braid structure to resist axial compression and maintain conical shape, resolving stability issues in clot capture.

An endoscope distal chamber with multiple lumens accommodates medical instruments and tissue samples within a single device structure.

A steerable suction cannula uses a segmented rigid and flexible structure to enable precise distal bending for targeted fluid delivery.

Flow-regulating devices deliver carbonated saline to lower body cavities, resolving invasive treatment risks while ensuring precise infection reduction.

An adhesive patch stabilizes catheter sheaths during procedures and achieves rapid hemostasis by inflating a compression bladder over the radial artery.

A surgical access device integrates a distal smoke evacuator tube ring to clear the internal surgical site.

A flexible sealing element with a wave-like structure adapts to varying instrument diameters without elastic stretching.

A self-expanding medical access sheath replaces restraining jackets with an integrated dilator and tapered fairing to reduce tissue trauma.

A resilient cannula expands inside the skull to accommodate surgical tools, minimizing brain tissue trauma during hemorrhagic stroke procedures.

Multi-stop stylet spacer adjusts needle depth to implant multiple fiducial markers precisely, eliminating manual reloading risks.

An actuator rotates the working channel to overcome frictional forces, protecting accessory devices from damage during precise manipulation.

Multi-durometer materials resolve gas leak contradictions by securing tissue engagement while maintaining insufflation pressure.

Bendable elbows in the introducer probe navigate curved sulcal paths, reducing tissue trauma during guided port insertion.

An adjustable cannula assembly uses a telescopic shaft with nested segments to tailor length for varying tissue thicknesses.