Infusion Needles TRIZ Cases
- Painless Piercing Conduit with One-Way Valve and Middle Aperture
A piercing conduit uses a one-way valve and middle aperture to enable painless medication delivery.
- Needle Assembly Rotor Locking Mechanism for Intradermal Injection Safety
A needle assembly uses a rotor with a restriction portion to lock the protection member, preventing re-displacement during intradermal injection.
- Retractable Syringe with Pneumatic Needle Retraction Control
A retractable syringe plunger incorporates a pneumatic air space to regulate needle retraction speed.
- Retracting Sheath Detachable Safety Needle Moving Spring
Radial protrusions move springs distally to lock sheaths over needles, preventing reuse and maintaining clear visibility for precise injection.
- Passive Syringe Reuse Prevention via Flange Lock
A syringe barrel integrates a flange lock that engages a plunger rod locking flange to prevent removal after injection.
- Parallel Linkage Needle Drive Mechanism
A parallel linkage converts linear actuator motion into transverse needle movement for precise insertion.
- Hinged Shield Assemblies with Ball-and-Socket Locking
A reversible lock holds the shield in place without manual intervention, resolving the trade-off between ease of operation and stability.
- Phlebotomy Needle Destruction via Ohmic Heating and Compression
Ohmic heating softens phlebotomy needle tips while axial compression deforms them into blunt balls, reducing sharps bin volume.
- Reusable Medical Needle Shield with Reset Mechanism
A slidably movable safety shield for medical needles resets via a dedicated device to protect the needle tip.
- Flexible Medical Device Injection System with Marked Needle and Plunger
Marked needle and plunger components enable controlled placement of flexible medical devices at variable depths, reducing tension on the device.
- Safety Syringe Needle Head Latch Structure
Segmented protective sleeves with embedding protrusions lock securely around the needle to prevent accidental exposure.
- Injection Needle Assembly Stabilizing Section Skin Contact
Stabilizing section contacts skin before needle tip insertion to secure depressing force and puncture speed for reliable upper layer drug delivery.
- Protective Sheath Cannula Safety Syringe
Protective sheath guides cannula through distinct retracted and ejection positions to prevent needlestick injuries during syringe use.
- Hinged Needle Shield With Living Hinge and Deflecting Ring
A hinged needle shield uses a living hinge to pivot the protective portion, enabling one-handed operation.