Cannulas TRIZ Cases

Segmented helical coils and loop tips resolve clot fragmentation risks by enabling secure capture without pushing material deeper into arteries.

Movable housing coupling tilts the cannula to maintain seal integrity during off-axis instrument delivery.

Segmentation separates the elastic expansion part from the tool fixing device, eliminating interference during laser scalpel insertion.

A veterinary injection device uses a shaped contact area and force sensors to verify correct positioning before activating the instrument.

A rotary embolectomy device fragments clots using a flexible driveshaft and cutting bit.

An adjustable surgical tool holder resists angular forces on elongate shafts, minimizing bending loads during minimally invasive procedures.

An elastic tubular sheath maintains intra-cavity pressure by sealing instrument access points, resolving leakage trade-offs during arthroscopy.

A curved bottle nose dissection tip reduces friction and contact pressure during endoscopic blood vessel harvesting procedures.

A snare device uses attachment portions to couple and decouple interchangeable loops.

A bladeless obturator features a convex proximal section and a rounded distal guiding nub for atraumatic tissue dissection.

An expandable inner tube with a grid configuration increases the visible area and work area in the body.

A visible puncture device integrates a balloon and needle tube to expand tissue channels for clear visualization.

A passive trocar holder uses a pivoting mechanism and friction brake system to enable precise manual instrument manipulation.

An access needle with a rotatable exit port on the sidewall reduces wire shearing risks during difficult biliary cannulation procedures.

A sterile debris removal catheter clears clots from body tubes without breaking the seal, reducing patient pain and infection risk.

An annular nozzle assembly generates a continuous pressure barrier that prevents insufflation gas leakage from the abdominal cavity.

Replacing fluid distension with a mechanical expander eliminates intravasation risk and continuous fluid supply needs.

An integrated power source eliminates tethers, while LED illumination reduces heat and smoke risks during laparoscopic surgery.

A retaining mechanism uses a cam wire and button member to lock a trocar assembly, enabling reliable cleaning and sterilization of surgical stapling devices.

A trocar sealing device uses an unrolling elongated skirt and compressive force material to maintain a secure seal around surgical instrument extension members.

A cannulated sleeve with a distal burr surface forms a bone pocket to guide drill bit insertion.

A surgical outer tube uses an interlocking slider to align the endoscope insertion part for precise mounting.

Protrusion and notch locking mechanism prevents unintended outer tubular movement, reducing premature band deployment risk.

Segmented dome and hub assemblies allow device removal without disturbing the indwelling trocar, reducing complexity and user error.

A surgical instrument shaft forms a compound angle to position the working end precisely within the surgical site.

Nested delivery tubes enable secure attachment of full-sized instrument heads to small shafts, resolving triangulation limits in minimally invasive surgery.

Portable electronic injectors use heating elements to maintain vaccine temperature during mass vaccination.

Segmented cannula channels bypass instrument shafts to evacuate smoke and sustain insufflation during laparoscopic procedures.

A steerable needle shaft uses controllably buckled segments to enable precise orientation control via a transmission system.

Segmented design with flexible tubes allows solo operator control, eliminating assistant dependency and reducing surgical time.

Segmented gasket sections reduce hoop stress and drag force, resolving the trade-off between tactile feedback and gas pressure retention.

Tip electrode apertures channel irrigating fluid through the catheter distal end to enable active cooling during ablation procedures.

A surgical instrument features an elongated member that shifts from a straight to a loop conformation for vaginal tissue dissection.

A stapler apparatus integrates a Doppler radar sensor to detect blood flow during tissue stapling.

A medical device system uses a rail and carrier to guide multiple instruments through one port.

A rotating expansion member drives angular offset blade deployment, resolving limited working area constraints in soft tissue dilation procedures.

Rotating capture members fold poultry skin to stabilize the injection site, resolving manual handling complexity and ensuring precise subcutaneous delivery.

Segmented adaptor portions decouple device connectors from endoscope channels, reducing inventory complexity across multiple manufacturers.

An instrument guide system integrates an electromagnetic sensor assembly into the handle to track surgical tool position and orientation in real time.

An inverted retention cannula resolves the trade-off between high pull-out resistance and tissue damage by placing threads internally.

A surgical robotic access system uses a flexible seal with an embedded insertion tube to provide multi-faceted instrument movement.

Radiopaque markers on a cannula hub indicate balloon expansion size, resolving visibility and stabilization trade-offs during minimally invasive procedures.

Pressurized fluid drives an inverted sleeve to advance an endoscope deep into curved vessels, resolving the trade-off between access depth and vessel damage.

Embedded tool memory transmits update data to robotic processors, reducing configuration time and costs during surgical procedures.

Percutaneous cutting sections incise mitral valve leaflets to prevent left ventricular outflow tract obstruction during prosthetic valve deployment.

An inverting shroud protects the instrument seal during surgical access device withdrawal.

A memory metal puncture needle navigates blood vessels and performs biopsy sampling while minimizing tissue damage.

A dual cannula insertion tool secures electrode leads within muscle tissue for accurate biopotential signal capture.