Cannulas TRIZ Cases

A perimeter-wall basin with bottom suction ports contains and evacuates surgical irrigation overflow while sealing to the patient's skin.

A delayed sharp retraction applicator stabilizes dermal sensor insertion, reducing user-caused misplacement, tissue damage, and inaccurate readings.

A built-in detection strip analyzes waste solution during nasal rinsing, combining cleansing with rapid pathogen and allergen screening.

Fluoroscopic percutaneous lamina channel access decompresses compressed nerve roots while limiting tissue damage and spinal instability.

Outwardly biased fins and a sliding retraction ring help retain irrigation fluid, retract soft tissue, and preserve tool maneuverability in minimally invasive surgery.

A conditioned balloon sleeve gives a trocar cannula low-profile insertion while improving fixation, seal integrity, and slippage resistance.

A collapsible receptacle with body-contact flanges seals around tubes and incisions to capture leakage, protect skin, and stabilize drainage.

A corrugated wiper seal with angled faces and an insertion guide cuts friction, resists inversion, and fits multiple instrument shaft diameters.

Real-time viewing through a transparent obturator tip and prism-guided camera helps place a brain cannula accurately with less tissue disruption.

A plastic optical fiber built into a circumferential retractor delivers 360-degree cavity lighting without glare, shadows, or hand-held adjustment.

Combined suction and irrigation align and aspirate kidney stones through one steerable catheter, reducing repeated insertions and urinary tract irritation.

A removable trocar cap routes access-port flow through a filter to contain particles while preserving pneumoperitoneum during surgery.

Inflatable annular rings and a flexible sheath create surgical access while spreading rib loads to reduce cracking, nerve damage, and pain.

A flexible access port expands only during large instrument passage, reducing incision size, tissue deformation, and prolonged nerve compression.

A waisted cannula with flared retention regions resists withdrawal, limits body wall trauma, and helps maintain insufflation during surgery.

Real-time 3D imaging, needle angle sensing, and visual overlays help plan a safer insertion path and avoid non-target anatomy.

An adjustable radial sheath seals arteriotomy gaps around intracardiac pump catheters to reduce bleeding, thrombosis, and vessel mismatch.

Flexible robotic arms and camera lumens improve mobility and visualization in minimally invasive surgery while avoiding large access ports.

A hydrophobic membrane separates gas and liquid paths to vent infusion-line bubbles without liquid backflow, helping maintain intraocular pressure.

Pivoting cannulas, adjustable arms, and dual-actuated distraction improve controlled spinal access and visualization across anterior, lateral, and oblique approaches.

A bulbous probe tip with smooth contours and retention features improves muscle passage, resists expulsion, and supports accurate nerve alerts.

A radially expandable cannula uses rigid elongate members to upsize the port after insertion, reducing force, tissue trauma, and gas loss.

Acoustically excited bubbles in an aqueous stream clean wounds and anatomical spaces by disrupting biofilms while stimulating tissue regeneration.

An adjustable vaginal seal plug locks on the introducer tube to maintain pneumoperitoneum during specimen retrieval and preserve visualization.

Articulating cameras and coordinated robotic arms give one surgeon multi-quadrant views and tool control without awkward motions.

Simultaneous tissue screw driving secures an apical cuff to cardiac muscle faster, with precise positioning and lower bleeding risk.

Aligned stylet, reamer, and cannula coupling reduces workflow steps and access error when creating entry into vertebral bone.

A pivoting head places multiple stays beneath the adventitia through keyhole incisions, cutting tissue disruption and procedure time.

A guided introducer keeps a flexible inner ring collapsed during insertion through small incisions or natural orifices, reducing dislodging and procedure time.

A countersink-retention needle with a recessed inner stylet captures full-core soft tissue samples with less crushing and fewer repeat passes.

An excising finger severs a full-core biopsy specimen without cannula rotation, improving sample retention while limiting tissue damage.

Separate agent and gas lumens aerosolize fluid at the distal tip, improving endoscopic application uniformity and healing while saving time.

Magnetic attraction and repulsion guide shaft attachment in smart surgical instruments while supporting secure hub-based data sharing.

An internal sheath flange enables a 6 mm or smaller hysteroscope for office use, easing insertion while maintaining continuous fluid outflow.

Multiple lumens, distal gas ports, and sealing gaskets enable sterile tool exchange while maintaining insufflation pressure through one transvaginal access point.

A releasable two-part hub lets an introducer sheath accept larger intravascular instruments directly, avoiding sheath exchange and procedure delay.

Vacuum holes and an articulated positioning assembly pull the esophagus away from the ablation field to reduce injury risk during catheter ablation.

Dual sealing members and anti-buckling support stabilize elongated biopsy instruments, limiting fluid leakage and damage during sampling.

A nested cannula, trocar, and depth guide enable single-point spinal canal access, cutting device changes, procedure time, and recovery pain.

A funnel collector filters nasal wash liquid to concentrate pathogens, enabling safer self-sampling and more reliable diagnostic collection.

A deployable Nitinol cannula forms a predictable curved path in bone, guiding treatment devices accurately to vertebral target zones.

A moving nozzle arm dispenses only above a stationary poultry tray, cutting fluid loss while keeping droplet coverage uniform in compact setups.

A nested spinal access assembly combines cannula, trocar, and depth guidance to simplify single-portal decompression and reduce procedure time.

A sealed funnel collector enables self-administered nasal wash sampling, improving reliability while reducing operator exposure and contamination risk.

A deflectable endoscope head and clearance opening free lumen space for a dilation catheter, enabling precise single-operator placement with visualization.

A grasping tool and threaded lock fix the shaft at the target site and ancillary device, reducing manual repositioning time in surgery.

A preloaded shield stays unobtrusive during bone access, then locks on retraction to cover the obturator tip and prevent inadvertent sticks.

A pivoting depth limiter grips different cannula diameters to prevent over-insertion and stabilize trocar position at the abdominal wall.

A radially expandable guide creates a mitral valve access path that bypasses chordae tendineae, improving coaxial prosthesis placement.