Cannulas TRIZ Cases

Pump-driven liquid circulation disinfects the tube assembly with less manual cleaning, reducing infection risk and wear.

Foldable spring-like blades enable atraumatic tissue retraction through small incisions while maintaining stable surgical access.

A modular applicator and sharp assembly stabilizes dermal sensor insertion, preventing early retraction and inaccurate analyte readings.

An anchor lumen secures the puncture and delivery assembly in place, avoiding tool exchange and keeping biologics dosing on target.

A friction-fit external tube detaches before an indwelling catheter is pulled out, reducing tissue damage and simplifying reconnection.

An integrated cannula, reamer, and stylet streamline vertebral body access, cut workflow steps, and improve placement accuracy.

A multiport valve routes saline cleaning and smoke filtration through separate paths, keeping instruments clear without exposing the filter to liquid.

A polygonal tube weakens shaft echoes while a retroreflective tip strengthens tip echoes, improving cannula positioning under ultrasound.

Elastomeric bands inside the surgical port wipe the endoscope lens in situ, maintaining vision while reducing removal time and infection risk.

A rotating assistant port adds hand-instrument access beside a robotic cannula while maintaining insufflation and reducing tissue trauma.

Pressurized irrigant through a fine endodontic needle creates inertial cavitation to clean small root canals without extensive filing.

An upstream one-way valve and coupling tube control cracking pressure to stop endoscope irrigation leakage and reduce contamination risk.

A multiport trocar valve cleans the endoscope lens in vivo and evacuates filtered smoke without wetting the filter, reducing delays and infection risk.

A concentric high-flow and low-flow fitting boosts insufflation gas delivery while preserving standard Luer sealing and connector compatibility.

A cannula clip stack with access slots enables intra-cavity loading of ligation clips while preserving instrument lumen integrity.

A guidewire and catheter approach reaches the renal subcapsular space to relieve pressure, enable decapsulation, and deliver therapy with less invasiveness.

Automatic cannula docking uses sensor-based state detection and multi-modal feedback to secure robotic arm attachment with less manual alignment.

A dual-lumen trocar enables catheter and endoscope access through one incision, reducing infection risk, fluid leakage, and discomfort.

A cam-actuated clamping arm secures varying cannula sizes quickly while preserving alignment, sterility, and low user effort.

Constrained multi-port seal geometry lets force on one surgical instrument stabilize others while maintaining access through a natural body orifice.

A flexible three-tube sheath follows curved brain trajectories to reach complex tumor margins through one burr hole while preserving imaging accuracy.

An auto-stopping drill and sealed port enable rapid intracranial access and sterile re-entry outside the operating room.

Fluoroscopic guidance and anatomical landmarks enable precise lateral recess bone removal to decompress nerve roots with less tissue damage.

A sacral transosseous cannula approach enables superior hypogastric plexus blockade while avoiding ureter, nerve root, and disc injury.

Predetermined grooves and slots let surgeons break a tubular retractor to the needed length, improving access while reducing field obstruction.

A compressible seal, pusher, and lock nut hub reduces blood leakage while securing and repositioning intravascular devices.

A shielded irrigation sleeve reduces exposed shank contact and delivers fluid to limit tissue wrap and adherence in rotary surgical instruments.

Negative pressure pulls the dura mater to a sharp hollow tip, creating a small circular void with less subdural tissue damage.

A single needle, multiple containers, and controlled switching enable accurate sequential livestock dosing with less fatigue and fewer malfunctions.

A spring accumulator and multi-nozzle plate replace vortex atomization, shortening nasal liquid dispensing time while maintaining fine spray.

A cam-guided, spring-biased release mechanism lets the seal housing lock securely to the trocar yet detach quickly during surgery.

Infrared reflection detects laparoscope mounting without microswitch contact, reducing friction, saving space, and preventing insertion stutter.

Movable sheath branches let a respiratory accessory articulate in multiple directions for better bronchiole access and precise tool placement.

Forward- and side-facing emitters let a lithotripsy balloon soften CTO entry points, cross hardened lesions, and break calcification from within.

A reservoir and flow restrictor smooth pulsed CO2 delivery in TAMIS, maintaining cavity pressure despite leakage, absorption, and smoke evacuation.

A progressive cavity pump delivers steady catheter irrigation to hold ablation temperature near target and reduce tissue charring risk.

Visual topper cues and variable dilator geometry help surgeons confirm stylet type, axis, depth, position, and angle during pedicle access.

A movable release member and biasing mechanism let the seal housing attach and detach quickly while maintaining reliable trocar coupling.

Temporary attachments hold longitudinal steering elements during assembly, limiting radial deformation and damage while preserving precise distal movement.

Nested sealing and guided support keep sampling needles or probes aligned, contained, and protected during minimally invasive collection.

Integrated cannula cameras create 3D surgical views and hands-free insertion by aligning split-disc optics with the insertion axis.

An annular jet creates a valve-less sealing zone in a robotic cannula to hold pneumoperitoneum and support smoke evacuation.

A resilient locking collar secures a removable surgical sheath while allowing quick release, easing sterilization of reusable instruments.

A progressive cavity pump delivers steady catheter irrigation, improving ablation temperature control and reducing charring or cavitation.

A telescoping CGM inserter uses a bias-driven pivot sequence to place the biosensor reliably while reducing part count and manufacturing complexity.

A linked needle shifts between flexible navigation and rigid puncture, improving biopsy access and specimen quality in small endoscope channels.

A localized conductive path in a cannula reducer dissipates leakage current while accommodating different surgical instrument sizes.

Segmented slotted hinge sections let a steerable instrument bend with lower force, high deflection, and less fatigue or part separation.

Integrated ultrasound and automated needle control help minimally trained users achieve reliable vascular access in difficult patient conditions.

A sealed flow restrictor transfers aspiration into the inner catheter, improving clot capture while reducing dislodgment risk in blocked vessels.