Cannulas TRIZ Cases

A rigid ceramic cannula with a polymeric sleeve enables precise substance delivery in MRI-guided surgeries.

A guide catheter integrates image sensors and light emitters to enable direct visualization during medical procedures.

A collapsible distal portion expands radially to seal the gastric wall, resolving fluid spillage risks while maintaining endoscope maneuverability.

Offset sealing members with magnetic biasing prevent insufflation gas leakage, resolving the trade-off between surgeon arm access and wound closure integrity.

Segmented seal assemblies with ribbed surfaces prevent tearing from sharp instrument edges, ensuring durable sealing in surgical access systems.

Segmented extension member seals with dynamic compression prevent insufflation gas leakage during surgical instrument movement.

A deployable tube apparatus provides lateral support to flexible surgical instruments using a coiled flexible sheet mechanism.

Folded sidewalls in a cross-slit cannula seal maintain insufflation pressure while allowing multiple instruments to pass through one port.

An eccentrically arranged tip on a vertebra introducer stylet minimizes soft tissue trauma and bone fracture risks during kyphoplasty procedures.

An elastic clamping element deflects during insertion and provides restoring force to prevent axial displacement of the sleeve.

A colon cleaning device uses fluid agitation and suction to remove fecal matter from the colon walls.

A detachable clip with knurled grips secures the endoscope and surgical tool, eliminating parallax distortion from acute angles.

Asymmetric ridge seal maintains pressure during extraction, reducing trauma and eliminating separate gripping instruments.

Progressive dilators create controlled openings to reduce tissue trauma during spinal nerve decompression procedures.

A percutaneous vascular surgical system uses a reversibly inflatable balloon to occlude blood vessels during endovascular interventions.

An optical alignment system replaces continuous fluoroscopy for needle placement, reducing radiation exposure to patients and surgical teams.

Segmented flexible cartridges overcome limited reach in periodontal pockets by adapting to cavity angles while minimizing tissue disruption.

Superelastic nitinol cannulas navigate bone and vessels via local quality thinning, reducing trauma during difficult biopsies.

Segmented infection-preventing sheath reduces abdominal wall resistance during gastrostomy catheter insertion.

Augmented reality overlays display projected trocar paths on anatomical maps to resolve placement accuracy issues in laparoscopic surgery.

Silicone button cannulas with dual fluid dams prevent fluid squirting and over-insertion while maintaining stability during instrument transfer.

Non-parallel lumen axes prevent instrument interference and obscure fields of view, enabling clear access during minimally invasive procedures.

Lateral auxiliary openings enable surgical instrument insertion while a camera remains coupled to the rear opening, resolving occlusion conflicts.

Offset center of mass generates orbital path, resolving tissue removal limits while minimizing trauma and heat.

Merging multiple lumens into one expandable hub eliminates the need for separate incisions, reducing tissue trauma and post-operative recovery time.

An adaptor assembly transfers linear force from a driver to a cannula while preventing drill over-extension.

Angled sealing ports in a surgical access device enable multi-angle instrument insertion, reducing the chopstick effect while maintaining insufflation.

Attaching the clip pack to the device keeps clips within the sterile field, preventing loss and contamination.

Side orifices on a curved cannula deliver bone cement radially, preventing leakage through bone defects.

Sealed retaining bag prevents malignant tissue dissemination during power morcellation.

A metal strut skeleton prevents premature deflation while surface protrusions minimize gastric mucosa trauma.

A movable cleaning element inside a trocar assembly wipes laparoscope lenses to remove debris, preventing sterility loss and reducing surgical time.

A surgical robotic system controller maintains remote center of motion alignment with an incision point using continuous position monitoring.

An inclined flange holder sealing element converts radial insertion forces into axial pressing forces to secure a seal against trocar sleeves.

A degradable probe base destroys itself during autoclave sterilization to prevent reuse in electrical current therapy.

An everted basket mechanism draws thrombi into a catheter, preventing vessel blockage from dislodged clot fragments.

Asymmetric echogenic structures improve image clarity and positioning accuracy across varying transducer frequencies.

Overlapping petals on a guard device expand under circumferential force to shield a tissue containment bag from scalpel damage during manual morcellation.

Segmented tubular members enable controlled advancement and withdrawal within bodily passages, reducing tissue trauma during salivary gland access procedures.

Segmented intervertebral implant pivots from closed to open configuration through Kambin's triangle access site.

Flexible torque component rotates inner cannula relative to outer cannula, enabling simultaneous polyp resection and retrieval without tool switching.

A force-limiting access system uses a dynamic interface to decouple the handle from the shaft under excessive load.

Absorbent tube with hinged tip clears scope lens and cannula debris without removing the viewing instrument from the patient.

Steam injection creates a hammer effect that loosens residues, allowing ultrasonic cavitation to remove contaminants from medical hollow instruments.

A multi-mode dissecting cannula uses a textured surface and expandable member to grip and separate tissue during minimally invasive procedures.

Spiral V-shaped grooves on a medical needle reflect ultrasound waves back to the transducer, resolving visualization difficulties during precise placement.

Nested C-curve stapling within an anoscope treats prolapsed hemorrhoids by occluding tissue, reducing recurrence and postoperative pain.

Semi-circular grooves and resilient gripping members prevent axial slippage while sensors verify attachment stability.

Automated carriage-mounted spray bars deliver fine vaccine mist near water lines, resolving inconsistent manual application and reducing operator stress.

Multi-directional endoscope arms deploy integrated instrument cameras to provide comprehensive internal views while minimizing procedural invasiveness.