TR Band Radial Artery Compression Device

Core Structure

1. Wrist Strap: Made of PVC or TPU, with Velcro adjustment to fit different wrist sizes.

2. Inflation Cuff (Core): A soft, elastic cuff with a positioning mark (e.g., a green dot) at the center to align with the puncture site; some models feature a dual-cuff design (radial artery + ulnar artery) that allows for independent pressure control.

3. Inflation System: Includes an inflation valve, connecting tubing, and a dedicated syringe (or a self-inflating knob); some models feature a pressure indicator or pressure gauge for quantitative pressure control.

4. Transparent Viewing Window: The cuff area is transparent, allowing direct observation of bleeding or hematoma formation at the puncture site.

5. Deflation Valve: Used for precise, gradual pressure reduction.

Principle of Operation

1. Positioning: Align the center of the balloon with the radial artery puncture site and secure the cuff.

2. Inflation: Use a syringe to inject air into the balloon (typically 13–18 mL). The balloon expands to compress the puncture site, stopping bleeding while preserving collateral circulation in the ulnar artery.

3. Gradual Deflation: After the procedure, gradually reduce the pressure over time (e.g., deflating by 1–2 mL every 2 hours) to promote vascular healing and prevent thrombosis and ischemia.

4. Monitoring: Continuously monitor finger perfusion and sensation throughout the procedure to ensure safety.

Indications

1. Hemostasis following percutaneous coronary intervention (PCI) via the radial artery, cerebral angiography, and peripheral vascular interventions.

2. Emergency radial artery puncture and temporary hemostasis for traumatic injuries.

3. Situations requiring precise pressure control and minimization of complications.

Clinical Advantages

1. Precise and Controllable Pressure: The inflation volume and pressure gauge quantify pressure, preventing over-inflation or under-inflation.

2. Uniform Compression: The air-cushion surface reduces localized skin damage and blisters.

3. Visualization: A transparent window allows real-time observation of the puncture site, eliminating the need for frequent release.

4. Ease of Use: Rapid inflation and deflation enhance nursing efficiency.

5. Lower Complication Rate: Compared to traditional bandages, the incidence of radial artery occlusion and hematoma is lower.

Standard Operating Procedure (Common Clinical Practice)

1. Preoperative Assessment: Perform the Allen test to confirm adequate blood supply to the ulnar artery.

2. Positioning and Securing: Align the center of the cuff with the puncture site; adjust the cuff tension so that one finger can fit comfortably underneath.

3. Inflation for Hemostasis: Connect a syringe and slowly inflate until no bleeding is observed (typically around 15 mL); record the initial pressure and volume.

4. Gradual Deflation: 2 hours post-procedure: Deflate by 1–2 mL. 4, 6, and 8 hours post-procedure: Repeat deflation to gradually reduce pressure. 8–10 hours post-procedure: Fully deflate, remove the tourniquet, and apply a dressing.

5.Monitoring: Observe finger color, temperature, sensation, and mobility every 30–60 minutes; deflate immediately if abnormalities are detected.

Precautions and Contraindications

Contraindications: Negative Allen’s test, severe peripheral vascular disease, coagulation disorders, infection at the puncture site, and upper limb ischemia.

Strictly prohibited: Blood pressure measurement, intravenous infusion, or lifting heavy objects on the affected side; avoid excessive wrist flexion.

Complications: Excessive compression may cause hand ischemia, numbness, or radial artery occlusion; insufficient pressure may lead to bleeding or hematoma.