Cannulas TRIZ Cases

Telescoping units in the expansion member expand a distal ring to secure a flexible sleeve, enabling single-practitioner deployment.

Integrated illumination on expandable member provides surgical site visibility while maintaining device stability through dynamic fixation.

Integrating a dilator and outer sheath into one device reduces procedural steps by combining tissue dilation and guidewire insertion.

A depth sensing dilator uses an electrode tip to measure tissue impedance for precise location confirmation during transseptal crossing.

Paired conical sheaths resist displacement and reduce tissue trauma by stabilizing the endoscope during endoscopic procedures.

Image-guided dilation of brain tissue creates a safe access area for surgery while reducing trauma to surrounding neural structures.

Segmented instrument seals prevent leakage when manipulating multiple tools, resolving seal integrity versus device complexity.

A telescoping Tuohy needle hub extends the shaft length to reach deeper epidural spaces in obese patients.

A vacuum pulsing device breaks up cataract tissue and aspirates fragments through a cannula.

A driving structure uses swinging assemblies to move blocks efficiently.

Segmented drape pouches gather fluid while a straining assembly filters out solids, preventing contamination of the evacuation port.

An inflatable tube extends by everting its distal end to advance through the gastrointestinal tract without dragging its exterior surface.

An atraumatic trocar uses a rounded obturator tip to displace subcutaneous tissue during insertion.

Segmented circular ridges connected by flexible material allow axial extension of the cannula, eliminating time-consuming exchanges during surgery.

Segmented anchor mechanism prevents proximal and distal cannula migration by combining a movable exterior device with a fixed subcutaneous engagement structure.

A flexible entry guide system steers through body openings using a robotic arm and actuator assembly to shape the tube.

Segmented catheters with rotating cutters debulk plaque in tortuous anatomy, reducing vessel wall damage and restenosis risk.

A suction ring retains cleaning fluid on an endoscope lens using vacuum pressure, removing debris without releasing liquid into the surgical site.

Conductive pathways in the surgical port dissipate electrical energy to ground, eliminating capacitive coupling and leakage currents between instruments.

Sliding latching member with resilient flex ring enables one-handed operation while preventing accidental disengagement of trocar housing.

A double-sided guidewire traverses chronic total occlusions retrograde then antegrade to reduce vessel wall puncture risk.

A retractable loop secures an insertable camera to the body cavity wall, eliminating dedicated incisions and reducing procedural complexity.

Adjustable telescoping cannulas resolve fixed-length limitations in hip arthroscopy by adapting to tissue swelling and diverse anatomies.

Computing node calculates motion paths through a trocar reference point to position a surgical end effector.

A surgical sleeve uses an adjustable flip ring to guide waste fluid into a collection bag.

Merging denuding and cauterization into one instrument reduces surgical complexity while delivering permanent pain relief for spinal arthritis.

Multi-wavelength illumination through diffusing fluid enhances visibility of deeper veins for accurate hemorrhoid treatment.

Segmented concentric cannulas resolve the trade-off between flexible navigation and trajectory accuracy in brain tissue.

A flat dissecting device guides a cutting tool along blood vessels to separate tissue with precision.

Integrated cleaning structure maintains sterile barrier while removing debris from laparoscope lenses, reducing surgical interruptions.

Segmented jaws pivot to narrow width for cannula access while maintaining arcuate sealing surfaces.

Printing devices deposit calculated port placement templates on transparent substrates to reduce manual setup time during robotic surgery.

Endoscope sensors detect trocar insertion to stop video capture outside the body, preventing privacy leaks and patient burns.

Segmented guiding tubes decouple tool movement from curved endoscope navigation to maintain precise tissue cutting.

A surgical sensing device uses a piston assembly to compress tissue against a shuttle clamp for property measurement.

A surgical access device uses a fixation sleeve assembly that transitions from a tubular profile to a radially outward anchor for secure tissue engagement.

A medical lift tool uses a locking mechanism to secure anatomic layers during surgical procedures.