Cannulas TRIZ Cases

Internal grinding mechanisms break down fecal chunks to prevent conduit clogging while pressure control systems protect intestinal tissues from damage.

Pivotable endoscope arms articulate to form a working triangle through a single insertion point.

Segmented balloon catheter blades limit incision depth to prevent underlying tissue damage while dilating stenotic aortic valves.

An automated surgical drill integrates a tissue detection sensor to characterize intracranial structures during bone drilling.

Separate compartments hold ion-rich fluids that react to form a charged compound, raising oxidation-reduction potential to inhibit anaerobic bacterial growth.

Segmenting the fluid delivery path prevents gas migration into tissue layers, reducing subcutaneous emphysema risk during surgical access.

A sealing device uses varying wall thicknesses to balance instrument insertion ease with structural rigidity.

A pericardiocentesis needle guide wire bends at least 90 degrees to pierce tissue precisely.

A disposable catheter uses a non-circular inner tube to prevent rotation within the outer tube.

A handheld nasal irrigation assembly uses a dedicated valve system to deliver irrigating fluid and aspirate waste through separate channels.

A hollow stretcher body features a sliding mobile wall that opens a through-window for surgical access to prolapse tissue.

Collapsible accordion sections transition between expanded and contracted lengths to maintain fluid-tight seals during minimally invasive procedures.

A medical device dissolves solid antiseptic precursors in sterile saline for immediate wound irrigation.

A reverse cam converts motor rotary motion into linear reciprocating cannula movement for power-assisted liposuction.

A cannula uses a continuous membrane that expands into an annulus via tube movement to contact tissue.

Actuator with two rods and a flexible connector translates plunger movement to synchronize fluid flow between standard syringes.

A 3D-stereoscopic infrared thermographic aspiration system guides precise removal of visceral fat tissue through small incisions.

A medical robot system coordinates camera and forceps arms through a single trocar using dynamic motion control.

Separate irrigation and suction channels maintain safe intraluminal pressure to prevent sepsis while ensuring clear endoscopic visibility.

Trocar assembly uses a key to hold the spear end within the cannula until deployment via an energizer.

Nested access ports with varying lengths and resilient bulbs minimize mutual interference during simultaneous instrument insertion through one incision.

A medical access device secures placement using a collapsible distal end portion retained by a sleeve for stable anchoring.

Simultaneous irrigation and aspiration removes waste fluid during delivery, resolving flooding discomfort and contamination risks.

Telescopic cannula adjusts depth via locking mechanism, preventing suprachoroidal infusion while maintaining clear surgical view.

A collinear light array projects parallel beams to form stable measurement patterns on surgical targets without moving parts.

Trocar pressure sensing transmits force data to a console, preventing incision damage during robotic surgery.

A knitted tractor tube inverts over a catheter tip to pull clots into the device.

A multi-planar obturator uses a foldable retractor to unfold longitudinal folds and expand the surgical pathway through tissue.

A steerable biopsy needle uses shape memory alloy and optical fibers to thermally activate deflection for precise tissue targeting.

Water vapor injection modulates sponge stiffness, resolving the trade-off between flexible insertion and stable operation in natural orifice surgery.

A coupling member links endoscope and treatment tool insertion parts via controlled friction forces to enable synchronized axial movement.

A surgery support apparatus uses sound wave phase difference to measure instrument insertion depth.

A wound irrigation device delivers a pressurized stream of sterile water containing less than 1% chlorhexidine gluconate through shaped nozzles.

Oblique cannula cover aperture guides instruments while composite elastomeric seal prevents insufflation gas leakage.

An inflatable balloon anchors a dual catheter system in blood vessels, resolving force transfer instability during peripheral liver biopsy navigation.

Biasing element maintains elastomeric seal against fluid leakage while enabling single-handed device insertion.

Segmenting thick cannulas into a clustered array reduces tissue damage while maintaining structural strength.

A movable shutter adjusts the access window length on a hemorrhoidal treatment device body.

A suction-based medical dressing uses a vacuum assembly to draw ambient fluid through bifurcated tubes and absorbent gauze for efficient removal.

A percutaneous bone repair system uses tethers to guide a reinforcing plate into engagement with fractured rib segments for stable fixation.

A stop-movement device locks a needle assembly within a dilator hub to control relative positioning between elongated medical components.

An expandable imaging hood displaces blood with transparent fluid to provide clear tissue visualization.

A medical device uses reciprocally movable links to transition between loose and compact configurations for precise tissue manipulation.

A flexible clearing member uses reciprocating motion to break up blockages within medical feeding tubes.

Slotted holders secure deformable flexible cannulas, reducing portal friction and preventing dislodgment during insertion.

A surgical device couples endoscope and treatment tool insertion parts for synchronized back-and-forth movement within an outer tube.

Monolithic tissue guard lip with spaced cut-outs creates flexible tabs for secure access device engagement.

An adjustable guide plate positions accessory catheters alongside a main channel, enabling simultaneous device insertion without structural complexity.

Dual-mode wound washing gun switches between battery and manual pressure to prevent cross-contamination while maintaining cost-effective disposability.