Dilators TRIZ Cases

A bypass tube traverses the hemostasis valve to cut insertion force while preserving a fluid-tight seal and reducing contamination risk.

Independent airbags and a flow guide enable targeted vaginal dilation, internal flushing, and reduced clothing contamination.

A flexible butterfly-like frame uses gentle stent pressure to fit varied nasal anatomy, enlarge passages, and improve airflow without surgery.

A friction-tuned deflection knob helps one operator bend and align an ENT guide shaft for precise balloon placement in varied passageways.

A concave retention balloon creates space for retainer deployment, reducing trauma and improving enteral feeding tube placement stability.

A six-sided coil uses large and small loops plus shape memory to improve aneurysm neck coverage and stabilize deployment.

Sequential dilators establish a stable cervical pathway before hysteroscope insertion, reducing perforation and false-passageway risks.

An expandable medical device uses sliding inner and outer tubes to align expansion force while improving passage through lumens.

Shape-memory heating enables precise implant release without mechanical dislodgment.

Deployable frame supports a bioremodelable cover to block blood flow, preventing aneurysm expansion and wall pressure.

Enlaced fibrous elements increase coil surface area, improving vaso-occlusion and healing response in aneurysms.

Dynamic anchors enable recapture of the expandable frame, resolving retention versus retrieval trade-offs for safer stroke prevention.

A self-expanding occlusion device uses a resilient valve mechanism to maintain a physical barrier after guide wire removal.

A vein stretching member dilates the lumen along one axis to improve treatment agent delivery.

A unified silicone prosthesis restores spinal biomechanics by absorbing shock and distributing forces without delamination.

A permeable balloon filled with solidifiable material cures via ultraviolet light to form a secure embolic mass.

Segmented electrical contact and tapered tubular portion reduce stress concentrations at the junction, preventing kinking during vaso-occlusive coil deployment.

An expandable polymer device filters emboli in vessels while eluting thrombolytic agents to dissolve trapped particles and prevent neurological disturbances.

Helical expansion of the filtering structure minimizes the device profile during navigation, enabling effective emboli capture without obstructing blood flow.

An expandable balloon applies pressure to the internal os for cervical ripening while a stylet prevents fetal contact during insertion.

Sliding valves on rigid rods separate distended postpartum vaginal walls, enabling solo obstetric operation without an assistant.

An inclined distal tubular portion repositions the suction port to the side, enlarging the opening area to prevent clogging during blood clot removal.

Segmented dual-cannula design removes blood clots en bloc using suction and reinfusion, resolving fragmentation and blood loss trade-offs.

Segmenting the pusher wire from the coil via an intermediary engagement member reduces catheter stiffness, enabling precise navigation through vasculature.

Depositing radiation curable compositions on removable substrates enables thin-walled balloons with high tensile strength and low deflated profiles.

Segmented gastric implants with esophageal stents prevent reflux while maintaining long-term satiety induction.

A microcoil design uses alternating open and closed loop portions to maintain a stable deployed configuration within target sites.

A self-expanding fabric device conforms to aneurysm geometry for vascular occlusion.

A variable diameter embolic coil reduces catheter wall sticking while maintaining pushability and effective vascular occlusion.

A flexible speculum expands gently to visualize the cervix and vaginal walls.

A recapture catheter extends a mesh barrier to occlude the left atrial appendage, preventing thrombus embolization into the bloodstream.

A woven filamentary shell expands radially to slow blood flow below the thrombotic threshold, resolving compaction risks in wide-necked aneurysms.

A hollow cannula houses a rotating flexible grinding wire for sinus material removal.

A detachable treatment device delivery system uses compression at an attachment zone to secure a deployment wire and proximal segment within a sheath lumen.

A spiral occluding device uses a helical fiber sail to expand surface area contact within body vessels.

A clot removal device uses a spiral engaging element to secure biological material within a tubular capture structure.

Varying distances between cutting knife bulging ports and seal end create larger axial cutting space, reducing balloon rupture risk during vertebroplasty.

An uncoupled left atrial appendage occlusion device uses an articulated joint to allow independent angulation of the bulb and cap structures.

Stent design uses spatial porosity variation to modulate blood flow and reduce aneurysm rupture risk.

A braid ball embolic device uses a spring-action tether ribbon to position radiopaque markers against the implant top.

Segmented, self-expanding members resist digestion and prevent pyloric passage, avoiding surgical removal while sustaining weight loss.

Segmented polymeric intermediate element in a three-layer coaxial vaso-occlusive device minimizes microcatheter friction to enhance pushability.

A catheter elongate member uses a circumferentially cut inner tube to allow flexible bending while maintaining uniform cross-sectional area.

Curly wires deploy radially from a delivery tube to ensnare thrombi intact, eliminating fragmentation risks in small vessels.

A flexible mesh enclosure retains soft compressible fill members that expand to occlude irregular aneurysm cavities without blocking parent vessel flow.

A retractable tubing system extends from an implanted gastric balloon to the patient's mouth for external fluid volume adjustment.

Anchor penetrates all three left atrial appendage wall layers to prevent embolization and enable retrieval without endocardium damage.

Liquid absorption expands an outer coil that compresses inner loops, providing in-situ stiffening to resist hemodynamic forces and prevent dislodgment.

Reversibly expandable mesh body with impermeable sleeve creates isolated treatment space while maintaining blood flow.

Retention harness anchors gradual expansion device in vaginal canal, reducing pelvic floor trauma by preventing dislodgement during patient movement.

An endoscopic delivery system expands a fluoropolymer sleeve within the gastrointestinal tract, bypassing open surgery and reducing organ failure risks.