Cannulas TRIZ Cases

A needle with distinct reflectance characteristics guides ultrasound visualization while a cannula sleeve promotes seal formation.

A biliary access sheath features a self-expanding distal tube that anchors within the biliary tree to retain ultra-slim endoscopes.

An expandable endoscope working channel accommodates larger surgical instruments through dynamic radial expansion.

A cannula flange with reflective surfaces directs light from obscured surgical sites to imaging devices.

Segmented cameras and wide-angle lenses resolve field of view limits without extra trocars.

A rotatable drill guide with a locking mechanism adjusts channel orientation to prevent lateral extension and fractures during bone fixation.

Compressible slots in a needle guide transition to lock an introducer cannula, preventing accidental pullout during biopsy procedures.

Fluid remover assemblies with scrapers and absorbent elements prevent lens contamination during laparoscopic scope insertion.

Optical projection of the drive screw provides real-time deflection data without X-ray imaging.

A positioning mechanism and fluid port clean endoscope windows in situ, preventing surgery delays from visual obstruction.

Segmented, rotatable flanges on a trocar sleeve reduce insertion depth and improve anchoring reliability under thin body walls.

A medical image processing apparatus switches between live and simulation views based on trocar detection results.

A poultry vaccination apparatus uses pneumatic cylinders to hold birds in position and administer multiple injections simultaneously.

Continuous rib portions form cell regions in a medical elastic sheet to suppress damage expansion while maintaining protective patency.

Segmented disposable endoscope assemblies eliminate sterilization complexity while maintaining imaging functionality through reusable rigid bodies.

A processing device retains biological impurities from the fluidic contents while exhausting treated gas to prevent operating room contamination.

A colon cleaning system uses a pressure sensor and controller to regulate insufflation gas flow.

A surgical trocar houses a journaled camera biased by a coil spring for deployment.

Preventive subchondroplasty treats subchondral bone defects to delay osteoarthritis progression and reduce total knee replacement need.

Absorbent swab delivery catheter cleans surgical scope lenses through existing portals, preventing fogging without removing the instrument.

A curved needle assembly features a fixing bulge to stabilize the canula within the thoracic cavity wall during insertion.

Axial actuating member eliminates pulleys to resolve force transmission reliability issues while reducing device volume.

A three-layer laparoscopic bag containing large specimens during morcellation prevents tumour seeding by resisting rupture from sharp instruments.

Inflatable bladder and flexible port seal vaginal incision during hysterectomy, maintaining pneumoperitoneum while allowing instrument access.

A multifunctional rotary rinser integrates a motor-driven swivel and internal pump for independent water supply.

Segmented trocar assembly using the Seldinger technique minimizes tissue damage during uterine cavity access.

Segmented enema nozzles use a soft tip to minimize tissue trauma and pain during self-administration.

Nested needles reduce heart puncture risk by separating piercing and steering functions during pericardial access.

A flexible retrieval bag containing tissue prevents harmful material dispersal while enabling safe morcellation through small incisions.

Interlocked coils embed sensors to provide real-time 3D tracking, resolving the trade-off between positioning precision and device complexity.

Segmented coaxial needles cut and capture cores to prevent crushing artifacts.

A seal bridge inserts into an elongated sleeve to bypass the laparoscopic port seal mechanism.

A trocar seal unit rotates to align with surgical instruments during insertion.

Nested optical fiber support tube eliminates shadows and protects fiber integrity during ophthalmic surgery.

Expandable sealing cup segments the articular cavity, preventing expansion fluid interference with therapeutic formulations.

A flexible tube connects to a housing with a tube fixing member for secure positioning.

Movable tabs dynamically adapt aperture size to maintain pressure-tight sealing against pressurized environments during minimally invasive procedures.

A rotatable adaptor mounts to an endoscopic portal via aligned projections and openings.

A heart cannula uses a flared tip and ring member to maintain stable positioning within the chamber.

A cannulotome integrates an endoscopic imaging lumen to enable precise bone removal during spinal procedures.

An illuminated trocar employs a visual stylet to detect tissue boundaries, eliminating blind insertion risks during abdominal insufflation.

Nested secondary and primary trocars deliver conditioned insufflation fluid, reducing hypothermia and peritoneal damage during robotic surgery.

An instrument shaft integrates an optical obturator and working channels for minimally invasive surgery.

Slider assembly controls expansion of an expandable frame to contain emboli in the left atrial appendage, reducing stroke risk without medication side effects.

A transcardiac cannula system with a compression assembly secures attachment to the heart muscle.

Adaptive tubing cassettes route aspiration and infusion lines to a common control console, eliminating the need for multiple dedicated modules.

A braided silicone sheath guides tools through the nasal cavity, reducing tissue trauma and fluid obstruction during endoscopic procedures.