Infusion Needles TRIZ Cases

A safety needle uses a radially deformable sleeve to automatically retract and cover the needle tip after injection.

Slidable top cover loads an angled needle into the upper 3 mm of skin surface, preventing skin tenting and ensuring precise depth control.

Crossed flexible grabbers in the needle shield remover resolve insertion grip contradictions by dynamically adjusting radial position for reliable removal.

Independent piston rod segments absorb biasing forces to prevent medication reabsorption and ensure complete dosing.

An integrated needle sensor measures injection pressure in real-time, alerting users when thresholds indicate improper placement.

A subcutaneous infusion needle with a curved middle portion absorbs mechanical energy through elastic deformation.

A safety pen needle assembly uses a threaded hub and shield to cover the distal needle end during mounting.

An oblique claw-like portion bends elastically to lock the needle, preventing tip entry into the back window for a compact sheath design.

A tubular cap assembly expands longitudinally to enclose used medicament delivery devices.

Axial plunger movement generates vacuum force that retracts the needle carrier, resolving space constraints in small syringes.

Rotating syringe hub disconnects needle assembly, eliminating two-handed removal risks and accidental punctures.

A needle protection assembly uses a radially movable locking element to secure the shield in the after-use position.