https://radiopaedia.org/articles/chiba-needle

The clinical value of the Chiba needle stretches far beyond diagnostic sampling. As minimally invasive therapy evolves into mainstream care, its core capability of creating precise, low-trauma access tracts has expanded into drainage, pain management, adjuvant intervention and other therapeutic fields, making it a truly versatile all-rounder for interventional treatment. This paper systematically elaborates its therapeutic applications across three major categories: drainage intervention, nerve block/ablation, and primary access for combined complex procedures, illustrating its role transformation from a reconnaissance sampling tool to a foundational engineering access instrument.

1. Drainage Therapy: Constructing Relief Channels for Body Fluid Stasis

For abnormally accumulated fluids in the body (pus, bile, urine, cystic fluid), the Chiba needle is the first-choice instrument to establish initial drainage access.

• Management of abscesses and cysts: Conditions including hepatic abscess, intra-abdominal abscess, renal cysts and pancreatic pseudocysts once routinely required open surgery. Today, under image guidance, the Chiba needle precisely punctures the abscess or cyst cavity. Aspirated fluid can be sent for laboratory testing to confirm pathological nature, while immediate pressure reduction rapidly relieves clinical symptoms. More critically, the classic Seldinger technique is deployed: following successful Chiba needle cannulation, a guidewire is advanced, over which a larger drainage catheter is exchanged to deliver sustained, adequate drainage until full recovery. This approach entails minimal tissue trauma and avoids major surgery, proving especially suitable for critically ill and debilitated patients.
• Biliary and renal pelvic decompression:
• Malignant obstructive jaundice: For jaundice caused by compression from advanced malignancies, percutaneous transhepatic biliary drainage (PTCD) is the primary palliative intervention. The Chiba needle is the exclusive device for the first critical step of PTCD-puncturing dilated intrahepatic bile ducts. Successful bile drainage swiftly restores liver function and alleviates pruritus, laying groundwork for subsequent therapies such as stent implantation and markedly improving patients' quality of life.

Urinary tract obstruction: Upper urinary tract blockage stemming from tumors, calculi or retroperitoneal fibrosis can be addressed via percutaneous renal pelvic puncture to create a nephrostomy drainage tract and preserve renal function. The Chiba needle likewise performs this vital initial puncture step.

2. Pain Management and Nerve Modulation: Precision Targeted Drug Delivery

Guided by real-time imaging, the Chiba needle functions as an ultra-precise injection cannula to reach the neural origin of pain signals.

• Nerve block and chemical neurolysis: For intractable end-stage cancer pain (e.g., severe discomfort from pancreatic or hepatic carcinoma), CT guidance positions the Chiba needle tip adjacent to nerve plexuses mediating pain transmission (such as the celiac plexus). Absolute ethanol or phenol is injected to execute chemical neurolysis, delivering long-lasting, potent analgesia. The same technique applies to chronic pain disorders including trigeminal neuralgia and posterior spinal ramus syndrome.
• Discography and intervertebral disc intervention: For suspected discogenic pain, the Chiba needle punctures the affected intervertebral disc. Contrast medium injection provokes symptomatic pain to confirm diagnosis (discography), while injectates such as ozone or collagenase may be administered concurrently for minimally invasive therapeutic intervention.
• Intra-articular injection: Under fluoroscopic or ultrasound guidance, deep joints including the hip and sacroiliac joint can be accurately cannulated for therapeutic drug injection to treat arthritis and articular pain.

3. Pioneer Access for Combined Complex Procedures: Paving the Way for High-Demand Advanced Therapies

In numerous intricate vascular and oncological interventional operations, the Chiba needle acts as the trailblazer to create primary access tracts.

• Transjugular Intrahepatic Portosystemic Shunt (TIPS): Regarded as a gold-standard complex procedure for portal hypertension complications. Its most technically demanding core step involves puncturing portal vein branches from the hepatic vein to form a shunt tract. This step relies on a specialized TIPS puncture kit centered on a slender, controllable trocar built on Chiba needle design principles, completing the intrahepatic vascular bypass under fluoroscopic visualization.
• Localization and adjuvant support for tumor ablation: Prior to radiofrequency, microwave or cryoablation, a Chiba needle is sometimes placed at the tumor margin as a localization marker, enabling accurate planning of ablation electrode position and angulation via CT imaging. For select anatomical sites, the Chiba needle itself serves as a delivery channel for chemical ablation agents such as absolute ethanol.
• Tract creation for osteoplasty: Vertebroplasty and cement augmentation for bone tumors require a sturdy access pathway extending from the skin to lesioned bone. Bone biopsy trocars are commonly utilized here, whose initial puncture logic shares the same foundational design philosophy as the Chiba needle.

Conclusion

From draining pathological fluid collections and interrupting pain signaling to pioneering access for sophisticated high-end interventions, the expanded therapeutic scope of the Chiba needle fully embodies interventional medicine's core tenet: resolving complex clinical conditions with minimal tissue trauma. It has evolved from a simple tissue sampling cannula into a versatile, fundamental therapeutic platform. Mastery of its manipulation across these therapeutic scenarios greatly expands the interventional physician's treatment arsenal, furnishing patients with more diversified, minimally invasive care options. Proficiency with the Chiba needle is an indispensable core skill for all interventional radiologists.