Do Perclose Sutures Dissolve? What Happens After Placement

Perclose sutures do not dissolve. The device uses polypropylene, a synthetic, non-absorbable suture material that remains permanently in the body after deployment. This surprises many patients, who reasonably assume that anything left at a puncture site should eventually break down and disappear. Instead, the suture becomes walled off by scar tissue over the weeks following the procedure, and the artery heals around it rather than waiting for it to go away.

What the Suture Is Made Of

The Perclose ProGlide system is a suture-mediated closure device that uses a polypropylene monofilament to close the puncture in the femoral artery wall after a catheter-based procedure.¹ Polypropylene is the same material used in many permanent surgical sutures throughout the body, including cardiovascular and hernia repair surgeries. It is chosen specifically because it does not break down. Absorbable sutures, by contrast, are made from materials like polyglycolic acid or polyglactin, which the body’s enzymes gradually digest over weeks to months. Polypropylene resists that process. The body cannot metabolize it, so it stays put indefinitely.

Long-term studies on polypropylene sutures implanted in blood vessels show that the material does undergo some surface changes over time. After one to two years inside the body, explanted polypropylene sutures showed visible surface stress cracking under microscopic examination, though the sutures remained structurally intact.² This cracking is a sign of very slow material degradation at the surface level, not dissolution. The suture does not weaken to the point of falling apart, and by the time any surface changes develop, the surrounding tissue has long since sealed the arterial puncture.

What Happens to the Suture After It Is Placed

Once the Perclose device deploys its suture and cinches the artery closed, the body’s healing response takes over. Within days, inflammatory cells move in around the foreign material, and within weeks, the area develops a layer of fibrous scar tissue. Animal studies examining suture-mediated closure devices found that pathologic examination revealed mild adventitial fibrosis forming a “fibrous hood” around the suture and the vessel wall.³ Think of it like the body building a permanent cocoon around the suture. The polypropylene thread does its mechanical job of holding the puncture closed during the critical first hours and days, and then the fibrous tissue gradually takes over as the structural seal.

Ultrasound imaging at six months after Perclose placement showed no changes compared to the initial findings, meaning the suture remained visible and stable at that time point.⁴ For patients who undergo imaging later and see something at the old access site, this is normal. The suture and its fibrous envelope are permanent fixtures, and their presence on ultrasound or CT does not indicate a problem.

Why Use a Permanent Suture Instead of a Dissolvable One

A fair question is why manufacturers chose a non-absorbable material in the first place. The answer comes down to reliability under pressure, literally. The femoral artery is a high-pressure vessel, and the puncture site needs to hold against arterial blood pressure immediately after the catheter is removed. Absorbable sutures lose tensile strength over time as the body breaks them down, which is fine for skin closures or internal tissue layers that are not under constant mechanical stress. An arterial puncture site, though, needs a suture that will hold at full strength until the vessel wall has healed completely. Polypropylene maintains its tensile strength for years, giving the artery plenty of time to seal the wound on its biological schedule rather than racing against suture degradation.

The tradeoff is that you carry a tiny piece of polypropylene in your groin permanently. In practice, patients cannot feel it. The suture is extremely thin, and once encapsulated in scar tissue, it causes no ongoing symptoms, inflammation, or tissue irritation in the vast majority of cases.

Recovery After Perclose Closure

The main reason Perclose devices exist is to get patients up and moving faster than the alternative, which is manual compression of the groin for 15 to 30 minutes followed by hours of flat bed rest. In comparative studies, the Perclose ProGlide achieved hemostasis (stopped the bleeding) in a few minutes compared to roughly 18 to 20 minutes for manual compression, and patients were able to walk hours earlier.⁵ In some settings, the time to walking was cut from over ten hours with manual compression to under half an hour with the device.⁶

For patients undergoing procedures like atrial fibrillation ablation, the use of closure devices instead of manual compression has been associated with roughly a four-hour reduction in hospital stay and four hours less bed rest.⁷ The shorter recovery is driven entirely by the mechanical closure; the suture holds the artery shut so the patient does not need to lie still waiting for a clot to form and stabilize. Whether the suture dissolves afterward is largely irrelevant to the recovery timeline, since the critical holding period is those first few hours.

Can the Same Artery Be Used Again

Since the polypropylene suture stays in place permanently, patients who need repeat catheter procedures sometimes worry about whether the old suture creates a problem for future access. The evidence on this is reassuring for most patients. Angiographic follow-up of patients who had suture-mediated closure found that 28 out of 31 patients had completely normal femoral artery caliber at follow-up, including one patient who had undergone four previous closures at the same site.⁸ The artery heals around the suture without narrowing in the overwhelming majority of cases.

The exceptions in that study were patients who already had atherosclerotic disease in the femoral artery before closure. Two patients with pre-existing plaque showed progression of disease at the puncture site, and a third patient with severely low platelet counts developed a small pseudoaneurysm that did not require treatment.⁹ The lesson is that the suture itself does not cause narrowing or scarring of the artery lumen in healthy vessels, but diseased arteries can behave unpredictably regardless of the closure method.

Complications Worth Knowing About

No medical device is risk-free, and understanding the potential complications of Perclose is more practically useful than worrying about whether the suture dissolves. Post-marketing surveillance data from the FDA’s adverse event database identified 827 reports of significant complications involving the Perclose ProGlide device. Bleeding from vessel injury was the most commonly reported adverse outcome, followed by hematoma and blood clot formation. Among device malfunctions specifically, suture-related problems were the most frequent category, with 212 reports.¹⁰

These numbers need context. The MAUDE database captures voluntarily reported adverse events without denominator data, meaning there is no way to calculate a complication rate from those figures alone. Millions of Perclose devices have been deployed worldwide. The reported complications represent a small fraction of total uses, though underreporting is always a concern with voluntary surveillance systems.

Infection is another risk that specifically relates to the permanent nature of the suture. Because polypropylene does not dissolve, an infected suture cannot simply be waited out. Case reports have documented groin infections following Perclose deployment that required surgical drainage and physical removal of the suture.¹¹ This is uncommon, but it underscores that the permanence of the material carries a small downside: if an infection develops around a non-absorbable suture, the foreign body needs to come out for the infection to resolve.

Artery blockage is a rare but serious complication. Case analysis has identified that vessel occlusion can occur when the suture accidentally captures the back wall of the artery near a branch point, essentially stitching the artery shut. In documented cases, the puncture sites were near the origin of branch vessels, and the posterior wall was inadvertently sutured to the front wall at the branch point.¹² This has nothing to do with the suture material and everything to do with deployment technique and anatomy.

When Calcification Complicates Matters

The most clinically relevant factor affecting Perclose success is not the suture material but the condition of the artery it is being placed in. Femoral artery calcification, the buildup of hardite calcium deposits in the vessel wall, is the main independent predictor of technical failure with the device. In studies of demanding patient populations, overall device success remained high at about 97.5%, but failures clustered among patients whose arteries had significant calcification, specifically those with more than two-thirds of the common femoral artery circumference affected by calcium deposits.¹³

The mechanism makes intuitive sense: the Perclose needle needs to pass through the artery wall to grab and deploy the suture. A heavily calcified wall is rigid and resistant to needle passage, making it harder to achieve a clean bite of tissue. Anterior wall calcification in particular predicted the need for additional Perclose devices to achieve closure. A separate prospective study found that the presence of calcified plaque alone, when posterior and not circumferential, was not associated with increased complications.¹⁴ The distinction matters: having some calcium in the artery does not automatically mean the device will fail, but having extensive, circumferential calcification makes deployment riskier.

Large-Bore Procedures and Multiple Devices

Perclose devices were originally designed for standard-size catheter punctures, but they have become a workhorse for closing much larger arterial holes created during structural heart procedures and aortic repairs. Procedures like transcatheter aortic valve replacement require sheaths of 14 French or larger, far bigger than the 6 French sheath the Perclose was originally built for. To close these larger holes, operators commonly deploy two Perclose devices in a “pre-close” technique, placing the sutures before inserting the large sheath and then tightening them after the sheath is removed.

Pre-closure with the Perclose technique for femoral arterial sites following large-sheath cardiac interventions has been shown to be safe and effective, with low rates of vascular access complications on clinical follow-up.¹⁵ More recently, investigators have explored whether a single Perclose device can close even very large holes. A meta-analysis comparing single versus double Perclose strategies for large-bore access found that the single-device approach was associated with a lower risk of arterial dissection, with no significant difference in other major outcomes.¹⁶ Single-device closure has also been reported as feasible with sheaths of 20 French and larger for endovascular aortic repair.¹⁷

For patients, the practical implication is that you may have one or two permanent polypropylene sutures at the access site depending on the procedure. The sutures do not interact with each other in any harmful way, and the tissue encapsulation process is the same whether one or two devices are used.

How Perclose Compares to Other Closure Devices

Perclose is not the only vascular closure device on the market, and the alternatives handle the dissolution question differently. Plug-based devices like Angio-Seal use a combination of a biodegradable anchor, collagen sponge, and an absorbable suture. The collagen and anchor in Angio-Seal do dissolve over roughly 60 to 90 days. So patients who have had an Angio-Seal closure have had an absorbable device, while Perclose patients have a permanent suture. Neither approach is inherently better; they represent different design philosophies for solving the same problem.

In head-to-head comparisons, Angio-Seal tended to achieve slightly faster hemostasis and ambulation times than Perclose ProGlide, though both were dramatically faster than manual compression.¹⁸ The ProGlide has advantages in other situations, particularly for large-bore access, where its suture-based mechanism can be adapted to close bigger holes through the pre-closure technique. Plug-based devices generally cannot be stacked the same way for large punctures. The ProGlide also represents a generational improvement over Abbott’s earlier Prostar XL device, with a design intended to be easier to deploy and gentler on the vessel.¹⁹

Cost and Hospital Efficiency

The permanent nature of Perclose sutures means there is no follow-up needed to confirm that the material has dissolved, and no window of vulnerability while an absorbable material weakens. This contributes to the efficiency gains that have made closure devices attractive to hospitals. Studies have found significant cost savings associated with Perclose-based closure strategies compared to manual compression, driven primarily by shorter hospital stays and reduced bed occupancy. One trial of ProGlide use after atrial fibrillation ablation found per-patient cost savings of several hundred euros compared to the standard compression approach.²⁰ A separate study found that total hospital costs were roughly half with ProGlide closure and early ambulation compared to manual compression, with patient satisfaction also higher in the device group.²¹

For patients, the cost question usually does not land on them directly since the device cost is bundled into the procedural charges. But the downstream effects matter: getting home the same day instead of staying overnight, spending less time immobile, and having a lower chance of complications from prolonged bed rest like back pain or urinary retention.

What Patients Should Actually Watch For

Since the suture is permanent, the post-procedure instructions are really about monitoring the healing of the tissue around it, not waiting for anything to dissolve. In the first 24 to 48 hours, the standard advice is to avoid heavy lifting, strenuous exercise, and soaking the puncture site in water. A small bruise at the groin is normal. What warrants a call to the physician is any rapidly expanding lump at the site (which could indicate a pseudoaneurysm or hematoma), new numbness or color change in the leg on that side, fever, or increasing redness and warmth at the puncture site suggesting infection.

Months or years later, if you undergo imaging of the groin for any reason, the polypropylene suture and its surrounding fibrous tissue may show up on ultrasound or CT. Radiologists familiar with vascular closure devices recognize this appearance and do not mistake it for pathology. If you are seeing a new provider who is reviewing groin imaging, it helps to mention that you have had a Perclose closure so the permanent suture material is not confused with something requiring investigation.