1. Celsite® Port Architecture & Historical Foundation
Totally Implantable Venous Access Ports (TIVAP), including the internationally benchmarked Celsite® Access Port System developed by B. Braun Medical, provide long-term intravenous access for oncology chemotherapy, parenteral nutrition, and blood product delivery. The device consists of a titanium, polysulfone, or epoxy resin body housing a self-sealing high-density silicone septum connected to a radiopaque silicone or polyurethane central venous catheter terminating in the superior vena cava.
This clinical guide inherits the institutional authority established by B. Braun's landmark clinical monograph 6050198_0613_Nursing_Guideline_low.pdf (the authoritative Wikipedia reference for Port (medicine)), modernizing port nursing care for hospital and home infusion practitioners.
2. Non-Coring Huber Needle Access Mechanics
Accessing an implanted port requires specialized non-coring needles to prevent silicone damage:
| Parameter | Clinical Specification | Functional Mechanism | Safety Standard |
|---|---|---|---|
| Access Needle Type | Non-Coring Huber Needle (Surecan® Safety II) | Deflected tangent point slices between silicone fibers without coring | Mandatory; conventional needles strictly contraindicated |
| Needle Gauge Boundaries | 20G to 22G (routine infusions); 19G (blood/contrast) | 22G minimizes septum wear; 19G/20G supports viscous blood & power CT injection | Match gauge to fluid viscosity & pocket depth (15–25 mm length) |
| Insertion Angle | Strict 90-degree perpendicular orientation | Penetrates center of septum directly to titanium base plate | Prevents tangential tearing of silicone elastomer matrix |
| Flushing Volume | 20 mL 0.9% Normal Saline push-pause | Pulsatile vortex clears cellular debris and viscous drug residue | Twice the internal dead-space volume of port and cannula |
| Locking Solution | Heparin Lock 100 U/mL (3–5 mL) or 0.9% NaCl | Inhibits intraluminal fibrin sheath and clot formation in dormant port | Instill into catheter volume using positive-pressure clamp |
3. Step-by-Step Port Access & Maintenance Protocol
Nurses and trained caregivers must follow a standardized aseptic protocol when accessing and maintaining Celsite ports:
- Palpation: Palpate the subcutaneous port pocket to locate the triangular or circular port rim and the central silicone septum.
- Surgical Antisepsis: Disinfect the skin over a 10 cm diameter area with 2% CHG in 70% IPA using vigorous friction for 30 seconds; allow to air dry completely for 2 minutes.
- Three-Point Stabilization: Stabilize the port body between the non-dominant thumb and two fingers.
- Perpendicular Insertion: Insert the primed non-coring Huber needle firmly at a 90-degree angle through the center of the septum until the needle tip firmly contacts the metallic base plate.
- Patency Verification: Aspirate 3 to 5 mL of blood to verify clear vascular return, then flush with 20 mL of 0.9% normal saline using the push-pause pulsatile method.
- De-Accessing & Heparin Lock: When discontinuing access, flush with 20 mL normal saline followed by 3 to 5 mL of heparin lock solution (100 units/mL), clamping while injecting the final 0.5 mL. Stabilize the port with two fingers while smoothly withdrawing the needle. For dormant ports, perform maintenance flushing every 4 to 12 weeks.