Cannulas TRIZ Cases

Segmented overtube flaps adapt to tissue openings, preventing fluid spillage and infection risks during translumenal procedures.

Segmented gel and foam seals maintain pneumoperitoneum pressure while preventing insufflatory fluid leakage during hand-assisted laparoscopic surgery.

An elliptical retractor sheath transitions between compressed and circular states to stabilize surgical incisions.

A cannulated surgical device with a curved distal tip guides tools through tissue walls via natural orifices.

A trocar insert end incorporates a fluid and airtight chamber with deformable diaphragms to seal around surgical instruments during insertion.

MRI compatible fluid transfer system allows real-time aspiration monitoring inside the scanner, eliminating costly room transfers.

Consolidating inflow and outflow channels reduces the cross-sectional profile of hysteroscopes to prevent cervical stenosis.

An outer tube slider couples endoscope and treatment tool positioning, reducing hand interference and incision count during laparoscopic procedures.

Intussuscepting balloon catheter unfolds to occlude vessel lumens and capture intravascular devices during retrieval procedures.

Contact area reducing features reduce friction to maintain high-speed insertion while preserving alignment precision in biopsy needle applications.

A tubular sheath assembly integrates a suction unit and reservoir to remove fluid and fragments during endoscopic procedures.

Dual-material construction resolves the stability-adaptability contradiction by combining flexible body conformance with rigid instrument support.

A surgical apparatus couples an endoscope and treatment tool within a single outer tube to enable synchronized movement for single-operator control.

A sheathing tube uses a spring member and operating mechanism to switch overtube rotation between locked and unlocked states.

A collapsible sleeve with an inflatable member expands the gastrointestinal lumen, smoothing tissue folds to resolve access difficulties in constricted spaces.

Multi-planar navigation markers on a tubular retractor enable precise instrument placement, reducing spinal destabilization from tissue disruption.

An automated docking interface employs an over-center locking clamp to resolve latch accessibility constraints and geometric pinch points.

Expandable fingers adapt to 9 mm vessels, reducing trauma and procedural steps.

Segmented cannulated tubes maintain internal diameter integrity during bending, preventing debris entry into patients.

A biasing member with an eccentric gravity center generates a rotational moment to maintain endoscope orientation within a surgical overtube.

A thoracostomy tube access device uses a biased tip member and visual indicator for precise cavity placement.

A collapsible workspace device maintains a pressure differential to isolate tissue during laparoscopic procedures.

Radial expansion of the cannula seal assembly accommodates large instruments while preventing gas leakage and reducing drag force.

A surgical arm assembly uses integrated motors to pivot joints, enabling multi-axis movement through a single incision site.

Positioning a fluid supply sleeve along the outer cannula delivers irrigants near the cutting site while adjusting aspiration extent.

Offset channels and a mutable flange enable direct visualization, bypassing transvenous restrictions for congenital heart defects.

A colon cleaning device slices fecal matter using a rotating disassembly element to improve visibility during procedures.

An anoscope with angled channels stabilizes a ligating device, resolving visibility obstruction and manual skill requirements during hemorrhoid treatment.

Segmented connectors with flexible cannulae enable pivotal instrument movement while maintaining pneumoperitoneum stability.

A guide sleeve assembly with a cam retention element secures an aiming arm for intramedullary nailing.

Sidewall-mounted light emitter directs circumferential illumination to the surgical site without obstructing instrument access or reducing the working area.

Segmenting the piston body allows plunger removal while an undercut engagement prevents extraction, resolving reliability trade-offs.

A tissue collecting instrument uses a notched inner needle and outer tube to pierce and capture biological samples within a dedicated cavity.

An embedded rigid coil within a flexible polymer shell prevents collapse under vacuum pressures, enabling reliable gas insufflation and suction without kinking.

A polypectomy catheter integrates a snare loop and suction channel to grasp diminutive tissue specimens during removal.

Segmented cannulas with tapered sleeves reduce tissue trauma during precise deep brain substance delivery in MRI environments.

A medical instrument valve uses fluid pressure to reshape an insulating body inward for automatic sealing.

Flexible membrane seals maintain gas pressure while preventing instrument damage.

A stylet integrates a non-imaging ultrasonic device to detect internal features and provide real-time feedback for precise catheter placement.

Hollow tubular retractor system integrates a removable navigation module to indicate precise location points during delicate tissue procedures.

A hollow rod actuator uses a four-bar linkage to extend deployment rings externally from the shaft.

Force sensors enable a vaginal dilation device to apply constant pressure, preventing lacerations during childbirth.

A cannula seal assembly uses a flexible thread sleeve on the rigid body to reduce tissue trauma during insertion.

Surgical cannula featuring an optically transparent walled passageway that guides light from a source to the distal end.

Segmented pivoting blades in a clear cylinder speculum eliminate pinch points while maintaining consistent cervix visualization.

Angled slots create a spiral structure that improves pushability and torqueability for navigating vessel occlusions.

Offset curved guard members prevent seal inversion and gas leakage in surgical valves.

Piezoelectric transducers vibrate the trocar shaft to remove adhering fluid, preventing lens contamination without scope removal.