Cannulas TRIZ Cases
- Memory Blade Delivery via Compaction for Vertebrae Resection
Compacting a memory blade inside a hollow sheath resolves the conflict between narrow cannula insertion and large resection diameter.
- Gimbal Mount Bellows Biasing for Surgical Seal Alignment
A gimbal mount uses a bellows to bias its passage toward the central axis, resolving friction-induced misalignment during instrument manipulation.
- Flat-Tip Probe Registration for Surgical Surface Matching
Force sensors validate mechanical contact during registration, resolving slipping issues and improving accuracy.
- Simultaneous Aspiration and Irrigation Wound Dressing
A conformable wound dressing applies negative pressure and thermal energy to circulate fluid across the wound bed.
- Transabdominal Gastric Access Cannula with Anchoring and Triangulation
A transabdominal gastric cannula system uses internal and external anchors to stabilize the working channel for surgical instruments.
- Medical Instrument Cone Connection with Axial Locking Mechanism
A medical instrument uses a hollow-cone receiving space and cone-shaped coupling section to connect parts via linear insertion.
- Low Profile Gimbal Seal for Surgical Instruments
Resilient gimbal mount maintains gas-tight seal during angulation, preventing leakage in minimally invasive procedures.
- Portable Veterinary Injector with Flexible Conduit and Linear Actuator
A portable veterinary injector uses a linear actuator to drive a hypodermic needle into muscle tissue via a flexible conduit.
- Intracranial Electrode Delivery System for Seizure Localization
Segmented electrode array deployed through a small burr hole reduces surgical invasiveness while maintaining precise seizure onset zone localization.
- Rotational Atherectomy Device with Offset Counterweights
Offset counterweights on a drive shaft stimulate orbital motion of an abrasive section during high-speed rotation.
- Absorbent Surgical Cannula Device for Laparoscopic Lens Clarity
Segmented absorbent discs on a surgical cannula remove fluid materials before they obscure the laparoscope lens, reducing cleaning interruptions.
- Coaxial Trocar Seals With Sequential Adjacent Openings
Segmented coaxial seals accommodate varying instrument diameters without exceeding material elastic limits, preventing leakage from side-to-side motion.
- Flexible Endoscope Laser Ablation for Spinal Decompression
A flexible imaging endoscope integrates a fiber optic laser to ablate encroaching epidural tissue with direct visualization.
- Intracranial Drug Injection Apparatus with Modular Guide and Tube
A modular intracranial injection device uses a separable tube unit to deliver therapeutic agents directly to brain lesions.
- Percutaneous Valve Removal Device with Cauterizing and Grinding Mechanisms
A catheter system uses mechanical drilling and cauterization to resect calcific aortic valves through percutaneous access.
- Proximally Mounted Cannula Camera Image Rotation
A proximally mounted camera system rotates displayed images to maintain natural orientation during minimally invasive surgery.
- Expandable Catheter Sheath Radial Expansion
Radially expanding slits in the catheter distal end accommodate oversized devices while maintaining column strength for insertion.