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Aneurysm Coiling Simple
Simple Aneurysm Coiling is a minimally invasive endovascular procedure that permanently seals a straightforward cerebral aneurysm by packing platinum coils into the aneurysm sac through a catheter — eliminating the risk of rupture or re-bleeding without the need for open-brain surgery.
Overview
Simple Aneurysm Coiling is the standard endovascular treatment for small to medium-sized saccular cerebral aneurysms with a favourable neck-to-dome ratio that allows platinum coils to be packed densely within the aneurysm sac without the need for stent or balloon assistance. Under general anaesthesia, a microcatheter is steered through the cerebral vasculature directly into the aneurysm under fluoroscopic roadmap guidance, and multiple platinum coils are deployed until the aneurysm is densely filled and occluded. Simple coiling provides excellent immediate and long-term aneurysm occlusion in carefully selected patients, with a safety and efficacy profile well-established by decades of clinical evidence.
Types of Simple Aneurysm Coiling
Simple coiling encompasses the standard technique applicable to the majority of small saccular aneurysms with appropriate neck anatomy, with several micro-catheter and coil technology options available.
- Standard Primary Coiling (single microcatheter, multiple coils — no adjunctive devices)
- 3D Coil Framing Technique (shaped 3D coils fill the dome before packing coils complete occlusion)
- Hydrocoil Enhanced Coiling (hydrophilic coils expand after deployment to improve packing density)
- GDC Detachable Coil System (gold standard electrolytically detachable platinum coils)
- Surgical Clipping Alternative (for patients where endovascular access is not feasible)
Risk Factors for Saccular Cerebral Aneurysm
Risk factors for simple saccular aneurysms are the same as for complex aneurysms, and their identification allows targeted risk reduction alongside procedural treatment.
- Hypertension causing sustained mechanical stress on arterial wall weak points
- Smoking significantly increasing aneurysm formation and rupture risk
- Family history of intracranial aneurysm in first-degree relatives
- Female sex with postmenopausal hormonal changes increasing rupture susceptibility
- Connective tissue disorders weakening arterial wall structural integrity
- Prior subarachnoid haemorrhage indicating high-risk aneurysm biology
Cerebral Aneurysm Symptoms
Simple aneurysms are often discovered incidentally or present with the acute drama of subarachnoid haemorrhage. Both presentations require urgent specialist assessment.
- Thunderclap headache — sudden onset, maximal intensity, worst headache of the patient's life
- Neck stiffness, photophobia, and nausea following subarachnoid haemorrhage
- Incidental finding on brain MRI, MRA, or CT angiogram performed for another reason
- Mild intermittent headache over the aneurysm site in some unruptured cases
- Seizure as the initial presentation of subarachnoid haemorrhage in a minority
- Loss of consciousness at onset of rupture
- Nausea and vomiting associated with sudden headache onset
- Cranial nerve palsy from direct mass effect of a large aneurysm on nearby structures
Key Benefits
Discover the advantages of choosing our aneurysm coiling simple services.
Permanently seals the aneurysm eliminating the risk of rupture or subarachnoid haemorrhage
Single procedure completed within 1 to 2 hours with same-day or next-day discharge
Avoids the risks and recovery associated with open craniotomy and brain retraction
Immediate DSA confirmation of closure provides reassurance before leaving the procedure suite
Follow-up MRA at 6 months and 1 year confirms sustained durable aneurysm occlusion
Clinical Features
The technology, techniques and clinical approach behind our aneurysm coiling simple.
Real-time fluoroscopic roadmap guidance throughout the entire coil deployment sequence
Multiple coil sizes progressively fill the aneurysm from framing to dense packing
Immediate DSA confirms complete occlusion and parent artery patency before withdrawal
No craniotomy required — the entire procedure is performed through the femoral artery
Neurovascular unit monitoring for 24 to 48 hours after successful simple coiling
Preparation Instructions
After Simple Aneurysm Coiling, rest at home for 3 to 5 days and avoid strenuous activity for 2 weeks. Attend follow-up MR angiography at 6 months and 1 year to confirm durable aneurysm occlusion and exclude any recanalization of the coiled sac. Control blood pressure rigorously with prescribed medications and stop smoking permanently to protect against new aneurysm formation and growth. Contact your neurointerventional team immediately for any sudden severe headache, neck stiffness, new neurological symptoms, or groin site complications.
The Procedure
Step-by-step guide to what you can expect during your aneurysm coiling simple procedure.
Neurovascular Assessment and Planning
Your neurointerventional specialist reviews the CT angiogram and 3D DSA images confirming a small to medium saccular aneurysm with a favourable neck-to-dome ratio suitable for standard primary coiling without any adjunctive device.
General Anaesthesia and Femoral Access
General anaesthesia is administered and the femoral artery is accessed under ultrasound guidance. A guide catheter is advanced to the target cerebral artery and a detailed roadmap angiogram is acquired to guide microcatheter navigation.
Microcatheter Placement in the Aneurysm
A microcatheter is carefully steered directly into the aneurysm sac under fluoroscopic roadmap guidance. The catheter tip is confirmed in the optimal position — just inside the aneurysm neck — before the first coil is introduced.
Sequential Coil Deployment
Platinum coils are introduced one by one through the microcatheter — a larger framing coil first to define the aneurysm shape, followed by progressively smaller filling coils until the sac is densely packed and blood can no longer enter the aneurysm.
DSA Confirmation of Complete Occlusion
A completion DSA confirms dense coil packing with no contrast filling the aneurysm, the parent artery is patent, and all surrounding branches are unobstructed — this definitive imaging confirmation precedes catheter withdrawal.
Recovery and Discharge Planning
You recover in the neurovascular unit for 24 to 48 hours. The femoral access site is managed with a closure device or manual compression. Most patients are discharged feeling well within 1 to 3 days.
What to Expect
Simple Aneurysm Coiling is performed under general anaesthesia and takes 1 to 2 hours. A microcatheter is guided from the femoral artery through the cerebral circulation directly into the aneurysm, and platinum coils are deployed one by one until the aneurysm is completely filled and excluded from the circulation — confirmed by immediate DSA. Most patients recover in the neurovascular unit for 24 to 48 hours and are discharged home within 1 to 3 days feeling well.
Frequently Asked Questions
Common questions about aneurysm coiling simple.
Related Services
Explore other services in our Neurology department.
Spinal Cord Fixation Two Level
Decompressive Craniotomy/SDH/EDH/ICH
Lumbar Laminectomy/ Discectomy Two Level
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